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Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.153 by root, Wed Nov 28 11:41:18 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	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		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
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#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
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# 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
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# 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
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		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
91	/**/	219	/**/
92		220
93	#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) */
94	#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) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#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 */
97
98	#ifndef EV_EMBED
99	# include "ev.h"
100	#endif
101		224
102	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
103	# 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
104	# 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
105	#else	235	#else
106	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
107	# define inline static	238	# define inline_size static
		239	# define noinline
108	#endif	240	#endif
109		241
110	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
111	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
112		244
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
116	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
119		254
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
122	/*****************************************************************************/	261	/*****************************************************************************/
123		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, size_t size) = realloc;
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, size_t size)
		296	{
		297	ptr = alloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)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
124	typedef struct	313	typedef struct
125	{	314	{
126	struct ev_watcher_list *head;	315	WL head;
127	unsigned char events;	316	unsigned char events;
128	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
129	} ANFD;	321	} ANFD;
130		322
131	typedef struct	323	typedef struct
132	{	324	{
133	W w;	325	W w;
134	int events;	326	int events;
135	} ANPENDING;	327	} ANPENDING;
136		328
		329	typedef struct
		330	{
		331	#if EV_USE_INOTIFY
		332	WL head;
		333	#endif
		334	} ANFS;
		335
137	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
138		337
139	struct ev_loop	338	struct ev_loop
140	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	343	#include "ev_vars.h"
143	};
144	# undef VAR	344	#undef VAR
		345	};
145	# 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;
146		350
147	#else	351	#else
148		352
		353	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	355	#include "ev_vars.h"
151	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
152		359
153	#endif	360	#endif
154		361
155	/*****************************************************************************/	362	/*****************************************************************************/
156		363
157	inline ev_tstamp	364	ev_tstamp
158	ev_time (void)	365	ev_time (void)
159	{	366	{
160	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
161	struct timespec ts;	368	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
166	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
167	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
168	#endif	375	#endif
169	}	376	}
170		377
171	inline ev_tstamp	378	ev_tstamp inline_size
172	get_clock (void)	379	get_clock (void)
173	{	380	{
174	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
175	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
176	{	383	{
…		…
181	#endif	388	#endif
182		389
183	return ev_time ();	390	return ev_time ();
184	}	391	}
185		392
		393	#if EV_MULTIPLICITY
186	ev_tstamp	394	ev_tstamp
187	ev_now (EV_P)	395	ev_now (EV_P)
188	{	396	{
189	return rt_now;	397	return ev_rt_now;
190	}	398	}
		399	#endif
191		400
192	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
193		402
194	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
196	{ \	405	{ \
197	int newcnt = cur; \	406	int newcnt = cur; \
198	do \	407	do \
199	{ \	408	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	410	} \
202	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
203	\	412	\
204	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
205	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	415	cur = newcnt; \
207	}	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;
208		428
209	/*****************************************************************************/	429	/*****************************************************************************/
210		430
211	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
212	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
213	{	461	{
214	while (count--)	462	while (count--)
215	{	463	{
216	base->head = 0;	464	base->head = 0;
…		…
219		467
220	++base;	468	++base;
221	}	469	}
222	}	470	}
223		471
224	static void	472	void inline_speed
225	event (EV_P_ W w, int events)
226	{
227	if (w->pending)
228	{
229	pendings [ABSPRI (w)][w->pending - 1].events |= events;
230	return;
231	}
232
233	w->pending = ++pendingcnt [ABSPRI (w)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
235	pendings [ABSPRI (w)][w->pending - 1].w = w;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;
237	}
238
239	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{
242	int i;
243
244	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);
246	}
247
248	static void
249	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
250	{	474	{
251	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	476	ev_io *w;
253		477
254	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)
255	{	479	{
256	int ev = w->events & events;	480	int ev = w->events & revents;
257		481
258	if (ev)	482	if (ev)
259	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
260	}	484	}
261	}	485	}
262		486
263	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
264		492
265	static void	493	void inline_size
266	fd_reify (EV_P)	494	fd_reify (EV_P)
267	{	495	{
268	int i;	496	int i;
269		497
270	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
271	{	499	{
272	int fd = fdchanges [i];	500	int fd = fdchanges [i];
273	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
274	struct ev_io *w;	502	ev_io *w;
275		503
276	int events = 0;	504	int events = 0;
277		505
278	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)
279	events |= w->events;	507	events |= w->events;
280		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
281	anfd->reify = 0;	518	anfd->reify = 0;
282		519
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	521	anfd->events = events;
287	}
288	}	522	}
289		523
290	fdchangecnt = 0;	524	fdchangecnt = 0;
291	}	525	}
292		526
293	static void	527	void inline_size
294	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
295	{	529	{
296	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
297	return;	531	return;
298		532
299	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
300		534
301	++fdchangecnt;	535	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
304	}	538	}
305		539
306	static void	540	void inline_speed
307	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
308	{	542	{
309	struct ev_io *w;	543	ev_io *w;
310		544
311	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
312	{	546	{
313	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
314	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);
315	}	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
316	}	560	}
317		561
318	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
319	static void	563	static void noinline
320	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
321	{	565	{
322	int fd;	566	int fd;
323		567
324	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	569	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
328	}	572	}
329		573
330	/* 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 */
331	static void	575	static void noinline
332	fd_enomem (EV_P)	576	fd_enomem (EV_P)
333	{	577	{
334	int fd = anfdmax;	578	int fd;
335		579
336	while (fd--)	580	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	581	if (anfds [fd].events)
338	{	582	{
339	close (fd);
340	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
341	return;	584	return;
342	}	585	}
343	}	586	}
344		587
345	/* 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 */
346	static void	589	static void noinline
347	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
348	{	591	{
349	int fd;	592	int fd;
350		593
351	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	595	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	596	if (anfds [fd].events)
354	{	597	{
355	anfds [fd].events = 0;	598	anfds [fd].events = 0;
356	fd_change (fd);	599	fd_change (EV_A_ fd);
357	}	600	}
358	}	601	}
359		602
360	/*****************************************************************************/	603	/*****************************************************************************/
361		604
362	static void	605	void inline_speed
363	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
364	{	607	{
365	WT w = heap [k];	608	WT w = heap [k];
366		609
367	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
368	{	611	{
369	heap [k] = heap [k >> 1];	612	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	613	((W)heap [k])->active = k + 1;
371	k >>= 1;	614	k >>= 1;
372	}	615	}
373		616
374	heap [k] = w;	617	heap [k] = w;
375	heap [k]->active = k + 1;	618	((W)heap [k])->active = k + 1;
376		619
377	}	620	}
378		621
379	static void	622	void inline_speed
380	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
381	{	624	{
382	WT w = heap [k];	625	WT w = heap [k];
383		626
384	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
390		633
391	if (w->at <= heap [j]->at)	634	if (w->at <= heap [j]->at)
392	break;	635	break;
393		636
394	heap [k] = heap [j];	637	heap [k] = heap [j];
395	heap [k]->active = k + 1;	638	((W)heap [k])->active = k + 1;
396	k = j;	639	k = j;
397	}	640	}
398		641
399	heap [k] = w;	642	heap [k] = w;
400	heap [k]->active = k + 1;	643	((W)heap [k])->active = k + 1;
		644	}
		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
401	}	651	}
402		652
403	/*****************************************************************************/	653	/*****************************************************************************/
404		654
405	typedef struct	655	typedef struct
406	{	656	{
407	struct ev_watcher_list *head;	657	WL head;
408	sig_atomic_t volatile gotsig;	658	sig_atomic_t volatile gotsig;
409	} ANSIG;	659	} ANSIG;
410		660
411	static ANSIG *signals;	661	static ANSIG *signals;
412	static int signalmax;	662	static int signalmax;
413		663
414	static int sigpipe [2];	664	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
		666	static ev_io sigev;
416		667
417	static void	668	void inline_size
418	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
419	{	670	{
420	while (count--)	671	while (count--)
421	{	672	{
422	base->head = 0;	673	base->head = 0;
…		…
427	}	678	}
428		679
429	static void	680	static void
430	sighandler (int signum)	681	sighandler (int signum)
431	{	682	{
		683	#if _WIN32
		684	signal (signum, sighandler);
		685	#endif
		686
432	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
433		688
434	if (!gotsig)	689	if (!gotsig)
435	{	690	{
436	int old_errno = errno;	691	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	694	errno = old_errno;
440	}	695	}
441	}	696	}
442		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 || signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
443	static void	718	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
445	{	720	{
446	struct ev_watcher_list *w;
447	int signum;	721	int signum;
448		722
449	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	724	gotsig = 0;
451		725
452	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
454	{	728	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;
456
457	for (w = signals [signum].head; w; w = w->next)
458	event (EV_A_ (W)w, EV_SIGNAL);
459	}
460	}	729	}
461		730
462	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
463	siginit (EV_P)	744	siginit (EV_P)
464	{	745	{
465	#ifndef WIN32	746	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		748
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	752	}
478		753
479	/*****************************************************************************/	754	/*****************************************************************************/
480		755
		756	static ev_child *childs [EV_PID_HASHSIZE];
		757
481	#ifndef WIN32	758	#ifndef _WIN32
		759
		760	static ev_signal childev;
		761
		762	void inline_speed
		763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		764	{
		765	ev_child *w;
		766
		767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		768	if (w->pid == pid || !w->pid)
		769	{
		770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		771	w->rpid = pid;
		772	w->rstatus = status;
		773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		774	}
		775	}
482		776
483	#ifndef WCONTINUED	777	#ifndef WCONTINUED
484	# define WCONTINUED 0	778	# define WCONTINUED 0
485	#endif	779	#endif
486		780
487	static void	781	static void
488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
489	{
490	struct ev_child *w;
491
492	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
493	if (w->pid == pid || !w->pid)
494	{
495	w->priority = sw->priority; /* need to do it *now* */
496	w->rpid = pid;
497	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);
499	}
500	}
501
502	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
504	{	783	{
505	int pid, status;	784	int pid, status;
506		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
507	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
508	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
509	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
510	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		796
512	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
514	}
515	}	800	}
516		801
517	#endif	802	#endif
518		803
519	/*****************************************************************************/	804	/*****************************************************************************/
520		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
521	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
522	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
523	#endif	811	#endif
524	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	813	# include "ev_epoll.c"
526	#endif	814	#endif
527	#if EV_USEV_POLL	815	#if EV_USE_POLL
528	# include "ev_poll.c"	816	# include "ev_poll.c"
529	#endif	817	#endif
530	#if EV_USE_SELECT	818	#if EV_USE_SELECT
531	# include "ev_select.c"	819	# include "ev_select.c"
532	#endif	820	#endif
…		…
542	{	830	{
543	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
544	}	832	}
545		833
546	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
547	static int	835	int inline_size
548	enable_secure (void)	836	enable_secure (void)
549	{	837	{
550	#ifdef WIN32	838	#ifdef _WIN32
551	return 0;	839	return 0;
552	#else	840	#else
553	return getuid () != geteuid ()	841	return getuid () != geteuid ()
554	|| getgid () != getegid ();	842	|| getgid () != getegid ();
555	#endif	843	#endif
556	}	844	}
557		845
558	int	846	unsigned int
559	ev_method (EV_P)	847	ev_supported_backends (void)
560	{	848	{
561	return method;	849	unsigned int flags = 0;
562	}
563		850
564	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
565	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
566	{	862	{
567	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
568	{	896	{
569	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
570	{	898	{
571	struct timespec ts;	899	struct timespec ts;
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	901	have_monotonic = 1;
574	}	902	}
575	#endif	903	#endif
576		904
577	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	906	mn_now = get_clock ();
579	now_floor = mn_now;	907	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
581		909
582	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else
586	methods = EVMETHOD_ANY;
587		914
588	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
		920	#if EV_USE_INOTIFY
		921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		926	#endif
589	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591	#endif	929	#endif
592	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594	#endif	932	#endif
595	#if EV_USEV_POLL	933	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597	#endif	935	#endif
598	#if EV_USE_SELECT	936	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600	#endif	938	#endif
601	}
602	}
603		939
604	void	940	ev_init (&sigev, sigcb);
		941	ev_set_priority (&sigev, EV_MAXPRI);
		942	}
		943	}
		944
		945	static void noinline
605	loop_destroy (EV_P)	946	loop_destroy (EV_P)
606	{	947	{
		948	int i;
		949
		950	#if EV_USE_INOTIFY
		951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		960	#endif
607	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609	#endif	963	#endif
610	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612	#endif	966	#endif
613	#if EV_USEV_POLL	967	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615	#endif	969	#endif
616	#if EV_USE_SELECT	970	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618	#endif	972	#endif
619		973
620	method = 0;	974	for (i = NUMPRI; i--; )
621	/*TODO*/	975	array_free (pending, [i]);
622	}
623		976
624	void	977	/* have to use the microsoft-never-gets-it-right macro */
		978	array_free (fdchange, EMPTY0);
		979	array_free (timer, EMPTY0);
		980	#if EV_PERIODIC_ENABLE
		981	array_free (periodic, EMPTY0);
		982	#endif
		983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
		986
		987	backend = 0;
		988	}
		989
		990	void inline_size
625	loop_fork (EV_P)	991	loop_fork (EV_P)
626	{	992	{
627	/*TODO*/	993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		998	#endif
628	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630	#endif	1001	#endif
631	#if EV_USE_KQUEUE	1002
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1003	if (ev_is_active (&sigev))
633	#endif	1004	{
		1005	/* default loop */
		1006
		1007	ev_ref (EV_A);
		1008	ev_io_stop (EV_A_ &sigev);
		1009	close (sigpipe [0]);
		1010	close (sigpipe [1]);
		1011
		1012	while (pipe (sigpipe))
		1013	syserr ("(libev) error creating pipe");
		1014
		1015	siginit (EV_A);
		1016	}
		1017
		1018	postfork = 0;
634	}	1019	}
635		1020
636	#if EV_MULTIPLICITY	1021	#if EV_MULTIPLICITY
637	struct ev_loop *	1022	struct ev_loop *
638	ev_loop_new (int methods)	1023	ev_loop_new (unsigned int flags)
639	{	1024	{
640	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1025	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
641		1026
		1027	memset (loop, 0, sizeof (struct ev_loop));
		1028
642	loop_init (EV_A_ methods);	1029	loop_init (EV_A_ flags);
643		1030
644	if (ev_methods (EV_A))	1031	if (ev_backend (EV_A))
645	return loop;	1032	return loop;
646		1033
647	return 0;	1034	return 0;
648	}	1035	}
649		1036
650	void	1037	void
651	ev_loop_destroy (EV_P)	1038	ev_loop_destroy (EV_P)
652	{	1039	{
653	loop_destroy (EV_A);	1040	loop_destroy (EV_A);
654	free (loop);	1041	ev_free (loop);
655	}	1042	}
656		1043
657	void	1044	void
658	ev_loop_fork (EV_P)	1045	ev_loop_fork (EV_P)
659	{	1046	{
660	loop_fork (EV_A);	1047	postfork = 1;
661	}	1048	}
662		1049
663	#endif	1050	#endif
664		1051
665	#if EV_MULTIPLICITY	1052	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	1053	struct ev_loop *
		1054	ev_default_loop_init (unsigned int flags)
670	#else	1055	#else
671	static int default_loop;
672
673	int	1056	int
		1057	ev_default_loop (unsigned int flags)
674	#endif	1058	#endif
675	ev_default_loop (int methods)
676	{	1059	{
677	if (sigpipe [0] == sigpipe [1])	1060	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	1061	if (pipe (sigpipe))
679	return 0;	1062	return 0;
680		1063
681	if (!default_loop)	1064	if (!ev_default_loop_ptr)
682	{	1065	{
683	#if EV_MULTIPLICITY	1066	#if EV_MULTIPLICITY
684	struct ev_loop *loop = default_loop = &default_loop_struct;	1067	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685	#else	1068	#else
686	default_loop = 1;	1069	ev_default_loop_ptr = 1;
687	#endif	1070	#endif
688		1071
689	loop_init (EV_A_ methods);	1072	loop_init (EV_A_ flags);
690		1073
691	if (ev_method (EV_A))	1074	if (ev_backend (EV_A))
692	{	1075	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	1076	siginit (EV_A);
696		1077
697	#ifndef WIN32	1078	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	1079	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	1080	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	1081	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1082	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	1083	#endif
703	}	1084	}
704	else	1085	else
705	default_loop = 0;	1086	ev_default_loop_ptr = 0;
706	}	1087	}
707		1088
708	return default_loop;	1089	return ev_default_loop_ptr;
709	}	1090	}
710		1091
711	void	1092	void
712	ev_default_destroy (void)	1093	ev_default_destroy (void)
713	{	1094	{
714	#if EV_MULTIPLICITY	1095	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	1096	struct ev_loop *loop = ev_default_loop_ptr;
716	#endif	1097	#endif
717		1098
		1099	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	1100	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	1101	ev_signal_stop (EV_A_ &childev);
		1102	#endif
720		1103
721	ev_ref (EV_A); /* signal watcher */	1104	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	1105	ev_io_stop (EV_A_ &sigev);
723		1106
724	close (sigpipe [0]); sigpipe [0] = 0;	1107	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		1109
727	loop_destroy (EV_A);	1110	loop_destroy (EV_A);
728	}	1111	}
729		1112
730	void	1113	void
731	ev_default_fork (EV_P)	1114	ev_default_fork (void)
732	{	1115	{
733	loop_fork (EV_A);	1116	#if EV_MULTIPLICITY
		1117	struct ev_loop *loop = ev_default_loop_ptr;
		1118	#endif
734		1119
735	ev_io_stop (EV_A_ &sigev);	1120	if (backend)
736	close (sigpipe [0]);	1121	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	1122	}
743		1123
744	/*****************************************************************************/	1124	/*****************************************************************************/
745		1125
746	static void	1126	int inline_size
		1127	any_pending (EV_P)
		1128	{
		1129	int pri;
		1130
		1131	for (pri = NUMPRI; pri--; )
		1132	if (pendingcnt [pri])
		1133	return 1;
		1134
		1135	return 0;
		1136	}
		1137
		1138	void inline_speed
747	call_pending (EV_P)	1139	call_pending (EV_P)
748	{	1140	{
749	int pri;	1141	int pri;
750		1142
751	for (pri = NUMPRI; pri--; )	1143	for (pri = NUMPRI; pri--; )
752	while (pendingcnt [pri])	1144	while (pendingcnt [pri])
753	{	1145	{
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1146	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		1147
756	if (p->w)	1148	if (expect_true (p->w))
757	{	1149	{
		1150	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1151
758	p->w->pending = 0;	1152	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	1153	EV_CB_INVOKE (p->w, p->events);
760	}	1154	}
761	}	1155	}
762	}	1156	}
763		1157
764	static void	1158	void inline_size
765	timers_reify (EV_P)	1159	timers_reify (EV_P)
766	{	1160	{
767	while (timercnt && timers [0]->at <= mn_now)	1161	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1162	{
769	struct ev_timer *w = timers [0];	1163	ev_timer *w = timers [0];
		1164
		1165	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
770		1166
771	/* first reschedule or stop timer */	1167	/* first reschedule or stop timer */
772	if (w->repeat)	1168	if (w->repeat)
773	{	1169	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1170	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1171
775	w->at = mn_now + w->repeat;	1172	((WT)w)->at += w->repeat;
		1173	if (((WT)w)->at < mn_now)
		1174	((WT)w)->at = mn_now;
		1175
776	downheap ((WT *)timers, timercnt, 0);	1176	downheap ((WT *)timers, timercnt, 0);
777	}	1177	}
778	else	1178	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1180
781	event (EV_A_ (W)w, EV_TIMEOUT);	1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1182	}
783	}	1183	}
784		1184
785	static void	1185	#if EV_PERIODIC_ENABLE
		1186	void inline_size
786	periodics_reify (EV_P)	1187	periodics_reify (EV_P)
787	{	1188	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1190	{
790	struct ev_periodic *w = periodics [0];	1191	ev_periodic *w = periodics [0];
		1192
		1193	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
791		1194
792	/* first reschedule or stop timer */	1195	/* first reschedule or stop timer */
793	if (w->interval)	1196	if (w->reschedule_cb)
794	{	1197	{
		1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1200	downheap ((WT *)periodics, periodiccnt, 0);
		1201	}
		1202	else if (w->interval)
		1203	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1205	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1206	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1207	}
799	else	1208	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1210
802	event (EV_A_ (W)w, EV_PERIODIC);	1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1212	}
804	}	1213	}
805		1214
806	static void	1215	static void noinline
807	periodics_reschedule (EV_P)	1216	periodics_reschedule (EV_P)
808	{	1217	{
809	int i;	1218	int i;
810		1219
811	/* adjust periodics after time jump */	1220	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1221	for (i = 0; i < periodiccnt; ++i)
813	{	1222	{
814	struct ev_periodic *w = periodics [i];	1223	ev_periodic *w = periodics [i];
815		1224
		1225	if (w->reschedule_cb)
		1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1227	else if (w->interval)
817	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1229	}
829	}
830		1230
831	inline int	1231	/* now rebuild the heap */
		1232	for (i = periodiccnt >> 1; i--; )
		1233	downheap ((WT *)periodics, periodiccnt, i);
		1234	}
		1235	#endif
		1236
		1237	int inline_size
832	time_update_monotonic (EV_P)	1238	time_update_monotonic (EV_P)
833	{	1239	{
834	mn_now = get_clock ();	1240	mn_now = get_clock ();
835		1241
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1243	{
838	rt_now = rtmn_diff + mn_now;	1244	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1245	return 0;
840	}	1246	}
841	else	1247	else
842	{	1248	{
843	now_floor = mn_now;	1249	now_floor = mn_now;
844	rt_now = ev_time ();	1250	ev_rt_now = ev_time ();
845	return 1;	1251	return 1;
846	}	1252	}
847	}	1253	}
848		1254
849	static void	1255	void inline_size
850	time_update (EV_P)	1256	time_update (EV_P)
851	{	1257	{
852	int i;	1258	int i;
853		1259
854	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
…		…
856	{	1262	{
857	if (time_update_monotonic (EV_A))	1263	if (time_update_monotonic (EV_A))
858	{	1264	{
859	ev_tstamp odiff = rtmn_diff;	1265	ev_tstamp odiff = rtmn_diff;
860		1266
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1267	/* loop a few times, before making important decisions.
		1268	* on the choice of "4": one iteration isn't enough,
		1269	* in case we get preempted during the calls to
		1270	* ev_time and get_clock. a second call is almost guarenteed
		1271	* to succeed in that case, though. and looping a few more times
		1272	* doesn't hurt either as we only do this on time-jumps or
		1273	* in the unlikely event of getting preempted here.
		1274	*/
		1275	for (i = 4; --i; )
862	{	1276	{
863	rtmn_diff = rt_now - mn_now;	1277	rtmn_diff = ev_rt_now - mn_now;
864		1278
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1280	return; /* all is well */
867		1281
868	rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1283	mn_now = get_clock ();
870	now_floor = mn_now;	1284	now_floor = mn_now;
871	}	1285	}
872		1286
		1287	# if EV_PERIODIC_ENABLE
873	periodics_reschedule (EV_A);	1288	periodics_reschedule (EV_A);
		1289	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1290	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1292	}
877	}	1293	}
878	else	1294	else
879	#endif	1295	#endif
880	{	1296	{
881	rt_now = ev_time ();	1297	ev_rt_now = ev_time ();
882		1298
883	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1299	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1300	{
		1301	#if EV_PERIODIC_ENABLE
885	periodics_reschedule (EV_A);	1302	periodics_reschedule (EV_A);
		1303	#endif
886		1304
887	/* adjust timers. this is easy, as the offset is the same for all */	1305	/* adjust timers. this is easy, as the offset is the same for all */
888	for (i = 0; i < timercnt; ++i)	1306	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1307	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1308	}
891		1309
892	mn_now = rt_now;	1310	mn_now = ev_rt_now;
893	}	1311	}
894	}	1312	}
895		1313
896	void	1314	void
897	ev_ref (EV_P)	1315	ev_ref (EV_P)
…		…
908	static int loop_done;	1326	static int loop_done;
909		1327
910	void	1328	void
911	ev_loop (EV_P_ int flags)	1329	ev_loop (EV_P_ int flags)
912	{	1330	{
913	double block;
914	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1331	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1332	? EVUNLOOP_ONE
		1333	: EVUNLOOP_CANCEL;
915		1334
916	do	1335	while (activecnt)
917	{	1336	{
		1337	/* we might have forked, so reify kernel state if necessary */
		1338	#if EV_FORK_ENABLE
		1339	if (expect_false (postfork))
		1340	if (forkcnt)
		1341	{
		1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1343	call_pending (EV_A);
		1344	}
		1345	#endif
		1346
918	/* queue check watchers (and execute them) */	1347	/* queue check watchers (and execute them) */
919	if (expect_false (preparecnt))	1348	if (expect_false (preparecnt))
920	{	1349	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1351	call_pending (EV_A);
923	}	1352	}
924		1353
		1354	/* we might have forked, so reify kernel state if necessary */
		1355	if (expect_false (postfork))
		1356	loop_fork (EV_A);
		1357
925	/* update fd-related kernel structures */	1358	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1359	fd_reify (EV_A);
927		1360
928	/* calculate blocking time */	1361	/* calculate blocking time */
		1362	{
		1363	double block;
929		1364
930	/* we only need this for !monotonic clockor timers, but as we basically	1365	if (flags & EVLOOP_NONBLOCK || idlecnt)
931	always have timers, we just calculate it always */	1366	block = 0.; /* do not block at all */
		1367	else
		1368	{
		1369	/* update time to cancel out callback processing overhead */
932	#if EV_USE_MONOTONIC	1370	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1371	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1372	time_update_monotonic (EV_A);
935	else	1373	else
936	#endif	1374	#endif
937	{	1375	{
938	rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1377	mn_now = ev_rt_now;
940	}	1378	}
941		1379
942	if (flags & EVLOOP_NONBLOCK || idlecnt)
943	block = 0.;
944	else
945	{
946	block = MAX_BLOCKTIME;	1380	block = MAX_BLOCKTIME;
947		1381
948	if (timercnt)	1382	if (timercnt)
949	{	1383	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951	if (block > to) block = to;	1385	if (block > to) block = to;
952	}	1386	}
953		1387
		1388	#if EV_PERIODIC_ENABLE
954	if (periodiccnt)	1389	if (periodiccnt)
955	{	1390	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957	if (block > to) block = to;	1392	if (block > to) block = to;
958	}	1393	}
		1394	#endif
959		1395
960	if (block < 0.) block = 0.;	1396	if (expect_false (block < 0.)) block = 0.;
961	}	1397	}
962		1398
963	method_poll (EV_A_ block);	1399	backend_poll (EV_A_ block);
		1400	}
964		1401
965	/* update rt_now, do magic */	1402	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1403	time_update (EV_A);
967		1404
968	/* queue pending timers and reschedule them */	1405	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1406	timers_reify (EV_A); /* relative timers called last */
		1407	#if EV_PERIODIC_ENABLE
970	periodics_reify (EV_A); /* absolute timers called first */	1408	periodics_reify (EV_A); /* absolute timers called first */
		1409	#endif
971		1410
972	/* queue idle watchers unless io or timers are pending */	1411	/* queue idle watchers unless other events are pending */
973	if (!pendingcnt)	1412	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1414
976	/* queue check watchers, to be executed first */	1415	/* queue check watchers, to be executed first */
977	if (checkcnt)	1416	if (expect_false (checkcnt))
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1418
980	call_pending (EV_A);	1419	call_pending (EV_A);
981	}
982	while (activecnt && !loop_done);
983		1420
984	if (loop_done != 2)	1421	if (expect_false (loop_done))
985	loop_done = 0;	1422	break;
		1423	}
		1424
		1425	if (loop_done == EVUNLOOP_ONE)
		1426	loop_done = EVUNLOOP_CANCEL;
986	}	1427	}
987		1428
988	void	1429	void
989	ev_unloop (EV_P_ int how)	1430	ev_unloop (EV_P_ int how)
990	{	1431	{
991	loop_done = how;	1432	loop_done = how;
992	}	1433	}
993		1434
994	/*****************************************************************************/	1435	/*****************************************************************************/
995		1436
996	inline void	1437	void inline_size
997	wlist_add (WL *head, WL elem)	1438	wlist_add (WL *head, WL elem)
998	{	1439	{
999	elem->next = *head;	1440	elem->next = *head;
1000	*head = elem;	1441	*head = elem;
1001	}	1442	}
1002		1443
1003	inline void	1444	void inline_size
1004	wlist_del (WL *head, WL elem)	1445	wlist_del (WL *head, WL elem)
1005	{	1446	{
1006	while (*head)	1447	while (*head)
1007	{	1448	{
1008	if (*head == elem)	1449	if (*head == elem)
…		…
1013		1454
1014	head = &(*head)->next;	1455	head = &(*head)->next;
1015	}	1456	}
1016	}	1457	}
1017		1458
1018	inline void	1459	void inline_speed
1019	ev_clear_pending (EV_P_ W w)	1460	ev_clear_pending (EV_P_ W w)
1020	{	1461	{
1021	if (w->pending)	1462	if (w->pending)
1022	{	1463	{
1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1024	w->pending = 0;	1465	w->pending = 0;
1025	}	1466	}
1026	}	1467	}
1027		1468
1028	inline void	1469	void inline_speed
1029	ev_start (EV_P_ W w, int active)	1470	ev_start (EV_P_ W w, int active)
1030	{	1471	{
1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1033		1474
1034	w->active = active;	1475	w->active = active;
1035	ev_ref (EV_A);	1476	ev_ref (EV_A);
1036	}	1477	}
1037		1478
1038	inline void	1479	void inline_size
1039	ev_stop (EV_P_ W w)	1480	ev_stop (EV_P_ W w)
1040	{	1481	{
1041	ev_unref (EV_A);	1482	ev_unref (EV_A);
1042	w->active = 0;	1483	w->active = 0;
1043	}	1484	}
1044		1485
1045	/*****************************************************************************/	1486	/*****************************************************************************/
1046		1487
1047	void	1488	void
1048	ev_io_start (EV_P_ struct ev_io *w)	1489	ev_io_start (EV_P_ ev_io *w)
1049	{	1490	{
1050	int fd = w->fd;	1491	int fd = w->fd;
1051		1492
1052	if (ev_is_active (w))	1493	if (expect_false (ev_is_active (w)))
1053	return;	1494	return;
1054		1495
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1496	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1497
1057	ev_start (EV_A_ (W)w, 1);	1498	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1501
1061	fd_change (EV_A_ fd);	1502	fd_change (EV_A_ fd);
1062	}	1503	}
1063		1504
1064	void	1505	void
1065	ev_io_stop (EV_P_ struct ev_io *w)	1506	ev_io_stop (EV_P_ ev_io *w)
1066	{	1507	{
1067	ev_clear_pending (EV_A_ (W)w);	1508	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1509	if (expect_false (!ev_is_active (w)))
1069	return;	1510	return;
		1511
		1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1070		1513
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1515	ev_stop (EV_A_ (W)w);
1073		1516
1074	fd_change (EV_A_ w->fd);	1517	fd_change (EV_A_ w->fd);
1075	}	1518	}
1076		1519
1077	void	1520	void
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1521	ev_timer_start (EV_P_ ev_timer *w)
1079	{	1522	{
1080	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1081	return;	1524	return;
1082		1525
1083	w->at += mn_now;	1526	((WT)w)->at += mn_now;
1084		1527
1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086		1529
1087	ev_start (EV_A_ (W)w, ++timercnt);	1530	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1532	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1533	upheap ((WT *)timers, timercnt - 1);
1091	}
1092		1534
		1535	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1536	}
		1537
1093	void	1538	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1539	ev_timer_stop (EV_P_ ev_timer *w)
1095	{	1540	{
1096	ev_clear_pending (EV_A_ (W)w);	1541	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1542	if (expect_false (!ev_is_active (w)))
1098	return;	1543	return;
1099		1544
1100	if (w->active < timercnt--)	1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1546
		1547	{
		1548	int active = ((W)w)->active;
		1549
		1550	if (expect_true (--active < --timercnt))
1101	{	1551	{
1102	timers [w->active - 1] = timers [timercnt];	1552	timers [active] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1553	adjustheap ((WT *)timers, timercnt, active);
1104	}	1554	}
		1555	}
1105		1556
1106	w->at = w->repeat;	1557	((WT)w)->at -= mn_now;
1107		1558
1108	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1109	}	1560	}
1110		1561
1111	void	1562	void
1112	ev_timer_again (EV_P_ struct ev_timer *w)	1563	ev_timer_again (EV_P_ ev_timer *w)
1113	{	1564	{
1114	if (ev_is_active (w))	1565	if (ev_is_active (w))
1115	{	1566	{
1116	if (w->repeat)	1567	if (w->repeat)
1117	{	1568	{
1118	w->at = mn_now + w->repeat;	1569	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1571	}
1121	else	1572	else
1122	ev_timer_stop (EV_A_ w);	1573	ev_timer_stop (EV_A_ w);
1123	}	1574	}
1124	else if (w->repeat)	1575	else if (w->repeat)
		1576	{
		1577	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1578	ev_timer_start (EV_A_ w);
		1579	}
1126	}	1580	}
1127		1581
		1582	#if EV_PERIODIC_ENABLE
1128	void	1583	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1584	ev_periodic_start (EV_P_ ev_periodic *w)
1130	{	1585	{
1131	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1132	return;	1587	return;
1133		1588
		1589	if (w->reschedule_cb)
		1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1591	else if (w->interval)
		1592	{
1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136	/* this formula differs from the one in periodic_reify because we do not always round up */	1594	/* this formula differs from the one in periodic_reify because we do not always round up */
1137	if (w->interval)
1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1596	}
1139		1597
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1598	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1600	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1601	upheap ((WT *)periodics, periodiccnt - 1);
1144	}
1145		1602
		1603	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1604	}
		1605
1146	void	1606	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1607	ev_periodic_stop (EV_P_ ev_periodic *w)
1148	{	1608	{
1149	ev_clear_pending (EV_A_ (W)w);	1609	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1610	if (expect_false (!ev_is_active (w)))
1151	return;	1611	return;
1152		1612
1153	if (w->active < periodiccnt--)	1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1614
		1615	{
		1616	int active = ((W)w)->active;
		1617
		1618	if (expect_true (--active < --periodiccnt))
1154	{	1619	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1620	periodics [active] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1621	adjustheap ((WT *)periodics, periodiccnt, active);
1157	}	1622	}
		1623	}
1158		1624
1159	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1160	}	1626	}
1161		1627
1162	void	1628	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1629	ev_periodic_again (EV_P_ ev_periodic *w)
1164	{	1630	{
1165	if (ev_is_active (w))	1631	/* TODO: use adjustheap and recalculation */
1166	return;
1167
1168	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );
1170	idles [idlecnt - 1] = w;
1171	}
1172
1173	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{
1176	ev_clear_pending (EV_A_ (W)w);
1177	if (ev_is_active (w))
1178	return;
1179
1180	idles [w->active - 1] = idles [--idlecnt];
1181	ev_stop (EV_A_ (W)w);	1632	ev_periodic_stop (EV_A_ w);
		1633	ev_periodic_start (EV_A_ w);
1182	}	1634	}
1183		1635	#endif
1184	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
1186	{
1187	if (ev_is_active (w))
1188	return;
1189
1190	ev_start (EV_A_ (W)w, ++preparecnt);
1191	array_needsize (prepares, preparemax, preparecnt, );
1192	prepares [preparecnt - 1] = w;
1193	}
1194
1195	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197	{
1198	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))
1200	return;
1201
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);
1226	}
1227		1636
1228	#ifndef SA_RESTART	1637	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1638	# define SA_RESTART 0
1230	#endif	1639	#endif
1231		1640
1232	void	1641	void
1233	ev_signal_start (EV_P_ struct ev_signal *w)	1642	ev_signal_start (EV_P_ ev_signal *w)
1234	{	1643	{
1235	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1237	#endif	1646	#endif
1238	if (ev_is_active (w))	1647	if (expect_false (ev_is_active (w)))
1239	return;	1648	return;
1240		1649
1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242		1651
1243	ev_start (EV_A_ (W)w, 1);	1652	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1655
1247	if (!w->next)	1656	if (!((WL)w)->next)
1248	{	1657	{
		1658	#if _WIN32
		1659	signal (w->signum, sighandler);
		1660	#else
1249	struct sigaction sa;	1661	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1662	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1663	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1664	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1665	sigaction (w->signum, &sa, 0);
		1666	#endif
1254	}	1667	}
1255	}	1668	}
1256		1669
1257	void	1670	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1671	ev_signal_stop (EV_P_ ev_signal *w)
1259	{	1672	{
1260	ev_clear_pending (EV_A_ (W)w);	1673	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1674	if (expect_false (!ev_is_active (w)))
1262	return;	1675	return;
1263		1676
1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1265	ev_stop (EV_A_ (W)w);	1678	ev_stop (EV_A_ (W)w);
1266		1679
1267	if (!signals [w->signum - 1].head)	1680	if (!signals [w->signum - 1].head)
1268	signal (w->signum, SIG_DFL);	1681	signal (w->signum, SIG_DFL);
1269	}	1682	}
1270		1683
1271	void	1684	void
1272	ev_child_start (EV_P_ struct ev_child *w)	1685	ev_child_start (EV_P_ ev_child *w)
1273	{	1686	{
1274	#if EV_MULTIPLICITY	1687	#if EV_MULTIPLICITY
1275	assert (("child watchers are only supported in the default loop", loop == default_loop));	1688	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1276	#endif	1689	#endif
1277	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1278	return;	1691	return;
1279		1692
1280	ev_start (EV_A_ (W)w, 1);	1693	ev_start (EV_A_ (W)w, 1);
1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1282	}	1695	}
1283		1696
1284	void	1697	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1698	ev_child_stop (EV_P_ ev_child *w)
1286	{	1699	{
1287	ev_clear_pending (EV_A_ (W)w);	1700	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1701	if (expect_false (!ev_is_active (w)))
1289	return;	1702	return;
1290		1703
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1705	ev_stop (EV_A_ (W)w);
1293	}	1706	}
1294		1707
		1708	#if EV_STAT_ENABLE
		1709
		1710	# ifdef _WIN32
		1711	# undef lstat
		1712	# define lstat(a,b) _stati64 (a,b)
		1713	# endif
		1714
		1715	#define DEF_STAT_INTERVAL 5.0074891
		1716	#define MIN_STAT_INTERVAL 0.1074891
		1717
		1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1719
		1720	#if EV_USE_INOTIFY
		1721	# define EV_INOTIFY_BUFSIZE 8192
		1722
		1723	static void noinline
		1724	infy_add (EV_P_ ev_stat *w)
		1725	{
		1726	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);
		1727
		1728	if (w->wd < 0)
		1729	{
		1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1731
		1732	/* monitor some parent directory for speedup hints */
		1733	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1734	{
		1735	char path [4096];
		1736	strcpy (path, w->path);
		1737
		1738	do
		1739	{
		1740	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1741	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1742
		1743	char *pend = strrchr (path, '/');
		1744
		1745	if (!pend)
		1746	break; /* whoops, no '/', complain to your admin */
		1747
		1748	*pend = 0;
		1749	w->wd = inotify_add_watch (fs_fd, path, mask);
		1750	}
		1751	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1752	}
		1753	}
		1754	else
		1755	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1756
		1757	if (w->wd >= 0)
		1758	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1759	}
		1760
		1761	static void noinline
		1762	infy_del (EV_P_ ev_stat *w)
		1763	{
		1764	int slot;
		1765	int wd = w->wd;
		1766
		1767	if (wd < 0)
		1768	return;
		1769
		1770	w->wd = -2;
		1771	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1772	wlist_del (&fs_hash [slot].head, (WL)w);
		1773
		1774	/* remove this watcher, if others are watching it, they will rearm */
		1775	inotify_rm_watch (fs_fd, wd);
		1776	}
		1777
		1778	static void noinline
		1779	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1780	{
		1781	if (slot < 0)
		1782	/* overflow, need to check for all hahs slots */
		1783	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1784	infy_wd (EV_A_ slot, wd, ev);
		1785	else
		1786	{
		1787	WL w_;
		1788
		1789	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1790	{
		1791	ev_stat *w = (ev_stat *)w_;
		1792	w_ = w_->next; /* lets us remove this watcher and all before it */
		1793
		1794	if (w->wd == wd || wd == -1)
		1795	{
		1796	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1797	{
		1798	w->wd = -1;
		1799	infy_add (EV_A_ w); /* re-add, no matter what */
		1800	}
		1801
		1802	stat_timer_cb (EV_A_ &w->timer, 0);
		1803	}
		1804	}
		1805	}
		1806	}
		1807
		1808	static void
		1809	infy_cb (EV_P_ ev_io *w, int revents)
		1810	{
		1811	char buf [EV_INOTIFY_BUFSIZE];
		1812	struct inotify_event *ev = (struct inotify_event *)buf;
		1813	int ofs;
		1814	int len = read (fs_fd, buf, sizeof (buf));
		1815
		1816	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1817	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1818	}
		1819
		1820	void inline_size
		1821	infy_init (EV_P)
		1822	{
		1823	if (fs_fd != -2)
		1824	return;
		1825
		1826	fs_fd = inotify_init ();
		1827
		1828	if (fs_fd >= 0)
		1829	{
		1830	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1831	ev_set_priority (&fs_w, EV_MAXPRI);
		1832	ev_io_start (EV_A_ &fs_w);
		1833	}
		1834	}
		1835
		1836	#endif
		1837
		1838	void
		1839	ev_stat_stat (EV_P_ ev_stat *w)
		1840	{
		1841	if (lstat (w->path, &w->attr) < 0)
		1842	w->attr.st_nlink = 0;
		1843	else if (!w->attr.st_nlink)
		1844	w->attr.st_nlink = 1;
		1845	}
		1846
		1847	void noinline
		1848	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1849	{
		1850	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1851
		1852	/* we copy this here each the time so that */
		1853	/* prev has the old value when the callback gets invoked */
		1854	w->prev = w->attr;
		1855	ev_stat_stat (EV_A_ w);
		1856
		1857	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1858	{
		1859	#if EV_USE_INOTIFY
		1860	infy_del (EV_A_ w);
		1861	infy_add (EV_A_ w);
		1862	ev_stat_stat (EV_A_ w); /* avoid race... */
		1863	#endif
		1864
		1865	ev_feed_event (EV_A_ w, EV_STAT);
		1866	}
		1867	}
		1868
		1869	void
		1870	ev_stat_start (EV_P_ ev_stat *w)
		1871	{
		1872	if (expect_false (ev_is_active (w)))
		1873	return;
		1874
		1875	/* since we use memcmp, we need to clear any padding data etc. */
		1876	memset (&w->prev, 0, sizeof (ev_statdata));
		1877	memset (&w->attr, 0, sizeof (ev_statdata));
		1878
		1879	ev_stat_stat (EV_A_ w);
		1880
		1881	if (w->interval < MIN_STAT_INTERVAL)
		1882	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1883
		1884	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1885	ev_set_priority (&w->timer, ev_priority (w));
		1886
		1887	#if EV_USE_INOTIFY
		1888	infy_init (EV_A);
		1889
		1890	if (fs_fd >= 0)
		1891	infy_add (EV_A_ w);
		1892	else
		1893	#endif
		1894	ev_timer_start (EV_A_ &w->timer);
		1895
		1896	ev_start (EV_A_ (W)w, 1);
		1897	}
		1898
		1899	void
		1900	ev_stat_stop (EV_P_ ev_stat *w)
		1901	{
		1902	ev_clear_pending (EV_A_ (W)w);
		1903	if (expect_false (!ev_is_active (w)))
		1904	return;
		1905
		1906	#if EV_USE_INOTIFY
		1907	infy_del (EV_A_ w);
		1908	#endif
		1909	ev_timer_stop (EV_A_ &w->timer);
		1910
		1911	ev_stop (EV_A_ (W)w);
		1912	}
		1913	#endif
		1914
		1915	void
		1916	ev_idle_start (EV_P_ ev_idle *w)
		1917	{
		1918	if (expect_false (ev_is_active (w)))
		1919	return;
		1920
		1921	ev_start (EV_A_ (W)w, ++idlecnt);
		1922	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1923	idles [idlecnt - 1] = w;
		1924	}
		1925
		1926	void
		1927	ev_idle_stop (EV_P_ ev_idle *w)
		1928	{
		1929	ev_clear_pending (EV_A_ (W)w);
		1930	if (expect_false (!ev_is_active (w)))
		1931	return;
		1932
		1933	{
		1934	int active = ((W)w)->active;
		1935	idles [active - 1] = idles [--idlecnt];
		1936	((W)idles [active - 1])->active = active;
		1937	}
		1938
		1939	ev_stop (EV_A_ (W)w);
		1940	}
		1941
		1942	void
		1943	ev_prepare_start (EV_P_ ev_prepare *w)
		1944	{
		1945	if (expect_false (ev_is_active (w)))
		1946	return;
		1947
		1948	ev_start (EV_A_ (W)w, ++preparecnt);
		1949	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1950	prepares [preparecnt - 1] = w;
		1951	}
		1952
		1953	void
		1954	ev_prepare_stop (EV_P_ ev_prepare *w)
		1955	{
		1956	ev_clear_pending (EV_A_ (W)w);
		1957	if (expect_false (!ev_is_active (w)))
		1958	return;
		1959
		1960	{
		1961	int active = ((W)w)->active;
		1962	prepares [active - 1] = prepares [--preparecnt];
		1963	((W)prepares [active - 1])->active = active;
		1964	}
		1965
		1966	ev_stop (EV_A_ (W)w);
		1967	}
		1968
		1969	void
		1970	ev_check_start (EV_P_ ev_check *w)
		1971	{
		1972	if (expect_false (ev_is_active (w)))
		1973	return;
		1974
		1975	ev_start (EV_A_ (W)w, ++checkcnt);
		1976	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1977	checks [checkcnt - 1] = w;
		1978	}
		1979
		1980	void
		1981	ev_check_stop (EV_P_ ev_check *w)
		1982	{
		1983	ev_clear_pending (EV_A_ (W)w);
		1984	if (expect_false (!ev_is_active (w)))
		1985	return;
		1986
		1987	{
		1988	int active = ((W)w)->active;
		1989	checks [active - 1] = checks [--checkcnt];
		1990	((W)checks [active - 1])->active = active;
		1991	}
		1992
		1993	ev_stop (EV_A_ (W)w);
		1994	}
		1995
		1996	#if EV_EMBED_ENABLE
		1997	void noinline
		1998	ev_embed_sweep (EV_P_ ev_embed *w)
		1999	{
		2000	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2001	}
		2002
		2003	static void
		2004	embed_cb (EV_P_ ev_io *io, int revents)
		2005	{
		2006	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2007
		2008	if (ev_cb (w))
		2009	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2010	else
		2011	ev_embed_sweep (loop, w);
		2012	}
		2013
		2014	void
		2015	ev_embed_start (EV_P_ ev_embed *w)
		2016	{
		2017	if (expect_false (ev_is_active (w)))
		2018	return;
		2019
		2020	{
		2021	struct ev_loop *loop = w->loop;
		2022	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2023	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2024	}
		2025
		2026	ev_set_priority (&w->io, ev_priority (w));
		2027	ev_io_start (EV_A_ &w->io);
		2028
		2029	ev_start (EV_A_ (W)w, 1);
		2030	}
		2031
		2032	void
		2033	ev_embed_stop (EV_P_ ev_embed *w)
		2034	{
		2035	ev_clear_pending (EV_A_ (W)w);
		2036	if (expect_false (!ev_is_active (w)))
		2037	return;
		2038
		2039	ev_io_stop (EV_A_ &w->io);
		2040
		2041	ev_stop (EV_A_ (W)w);
		2042	}
		2043	#endif
		2044
		2045	#if EV_FORK_ENABLE
		2046	void
		2047	ev_fork_start (EV_P_ ev_fork *w)
		2048	{
		2049	if (expect_false (ev_is_active (w)))
		2050	return;
		2051
		2052	ev_start (EV_A_ (W)w, ++forkcnt);
		2053	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2054	forks [forkcnt - 1] = w;
		2055	}
		2056
		2057	void
		2058	ev_fork_stop (EV_P_ ev_fork *w)
		2059	{
		2060	ev_clear_pending (EV_A_ (W)w);
		2061	if (expect_false (!ev_is_active (w)))
		2062	return;
		2063
		2064	{
		2065	int active = ((W)w)->active;
		2066	forks [active - 1] = forks [--forkcnt];
		2067	((W)forks [active - 1])->active = active;
		2068	}
		2069
		2070	ev_stop (EV_A_ (W)w);
		2071	}
		2072	#endif
		2073
1295	/*****************************************************************************/	2074	/*****************************************************************************/
1296		2075
1297	struct ev_once	2076	struct ev_once
1298	{	2077	{
1299	struct ev_io io;	2078	ev_io io;
1300	struct ev_timer to;	2079	ev_timer to;
1301	void (*cb)(int revents, void *arg);	2080	void (*cb)(int revents, void *arg);
1302	void *arg;	2081	void *arg;
1303	};	2082	};
1304		2083
1305	static void	2084	static void
…		…
1308	void (*cb)(int revents, void *arg) = once->cb;	2087	void (*cb)(int revents, void *arg) = once->cb;
1309	void *arg = once->arg;	2088	void *arg = once->arg;
1310		2089
1311	ev_io_stop (EV_A_ &once->io);	2090	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	2091	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	2092	ev_free (once);
1314		2093
1315	cb (revents, arg);	2094	cb (revents, arg);
1316	}	2095	}
1317		2096
1318	static void	2097	static void
1319	once_cb_io (EV_P_ struct ev_io *w, int revents)	2098	once_cb_io (EV_P_ ev_io *w, int revents)
1320	{	2099	{
1321	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2100	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1322	}	2101	}
1323		2102
1324	static void	2103	static void
1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2104	once_cb_to (EV_P_ ev_timer *w, int revents)
1326	{	2105	{
1327	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2106	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1328	}	2107	}
1329		2108
1330	void	2109	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2110	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1332	{	2111	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	2112	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1334		2113
1335	if (!once)	2114	if (expect_false (!once))
		2115	{
1336	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2116	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1337	else	2117	return;
1338	{	2118	}
		2119
1339	once->cb = cb;	2120	once->cb = cb;
1340	once->arg = arg;	2121	once->arg = arg;
1341		2122
1342	ev_watcher_init (&once->io, once_cb_io);	2123	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	2124	if (fd >= 0)
1344	{	2125	{
1345	ev_io_set (&once->io, fd, events);	2126	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	2127	ev_io_start (EV_A_ &once->io);
1347	}	2128	}
1348		2129
1349	ev_watcher_init (&once->to, once_cb_to);	2130	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	2131	if (timeout >= 0.)
1351	{	2132	{
1352	ev_timer_set (&once->to, timeout, 0.);	2133	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	2134	ev_timer_start (EV_A_ &once->to);
1354	}
1355	}	2135	}
1356	}	2136	}
1357		2137
		2138	#ifdef __cplusplus
		2139	}
		2140	#endif
		2141

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