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Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 2007 UTC vs.
Revision 1.167 by root, Sat Dec 8 04:02:31 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
		36	#ifndef EV_STANDALONE
31	#if EV_USE_CONFIG_H	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_USE_POLL	155	#ifndef EV_USE_POLL
64	# 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
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	#include "ev.h"
99		224
100	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
101	# 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
102	# 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
103	#else	235	#else
104	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
105	# define inline static	238	# define inline_size static
		239	# define noinline
106	#endif	240	#endif
107		241
108	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
110		244
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
114	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
117		254
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
		261	/*****************************************************************************/
		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
		313	typedef struct
		314	{
		315	WL head;
		316	unsigned char events;
		317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
		321	} ANFD;
		322
		323	typedef struct
		324	{
		325	W w;
		326	int events;
		327	} ANPENDING;
		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
		336	#if EV_MULTIPLICITY
		337
		338	struct ev_loop
		339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
		342	#define VAR(name,decl) decl;
		343	#include "ev_vars.h"
		344	#undef VAR
		345	};
		346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
		350
		351	#else
		352
119	ev_tstamp ev_now;	353	ev_tstamp ev_rt_now;
120	int ev_method;	354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
121		357
122	static int have_monotonic; /* runtime */	358	static int ev_default_loop_ptr;
123		359
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	360	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		361
128	/*****************************************************************************/	362	/*****************************************************************************/
129		363
130	ev_tstamp	364	ev_tstamp
131	ev_time (void)	365	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	375	#endif
142	}	376	}
143		377
144	static ev_tstamp	378	ev_tstamp inline_size
145	get_clock (void)	379	get_clock (void)
146	{	380	{
147	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
149	{	383	{
…		…
154	#endif	388	#endif
155		389
156	return ev_time ();	390	return ev_time ();
157	}	391	}
158		392
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	393	#if EV_MULTIPLICITY
		394	ev_tstamp
		395	ev_now (EV_P)
		396	{
		397	return ev_rt_now;
		398	}
		399	#endif
160		400
		401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
		428
161	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
163	{ \	431	{ \
164	int newcnt = cur; \	432	int ocur_ = (cur); \
165	do \	433	(base) = (type *)array_realloc \
166	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
167	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
168	} \	436	}
169	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
170	\	441	{ \
171	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
172	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
173	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
174	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		450
176	/*****************************************************************************/	451	/*****************************************************************************/
177		452
178	typedef struct	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
179	{	455	{
180	struct ev_io *head;	456	W w_ = (W)w;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184		457
185	static ANFD *anfds;	458	if (expect_false (w_->pending))
186	static int anfdmax;	459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
187		463
188	static void	464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
189	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
190	{	483	{
191	while (count--)	484	while (count--)
192	{	485	{
193	base->head = 0;	486	base->head = 0;
…		…
196		489
197	++base;	490	++base;
198	}	491	}
199	}	492	}
200		493
201	typedef struct	494	void inline_speed
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;
217	}
218
219	w->pending = ++pendingcnt [ABSPRI (w)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
221	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}
224
225	static void
226	queue_events (W *events, int eventcnt, int type)
227	{
228	int i;
229
230	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);
232	}
233
234	static void
235	fd_event (int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
236	{	496	{
237	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	498	ev_io *w;
239		499
240	for (w = anfd->head; w; w = w->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
241	{	501	{
242	int ev = w->events & events;	502	int ev = w->events & revents;
243		503
244	if (ev)	504	if (ev)
245	event ((W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
246	}	506	}
247	}	507	}
248		508
249	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
250		514
251	static int *fdchanges;	515	void inline_size
252	static int fdchangemax, fdchangecnt;	516	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	517	{
257	int i;	518	int i;
258		519
259	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
260	{	521	{
261	int fd = fdchanges [i];	522	int fd = fdchanges [i];
262	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	524	ev_io *w;
264		525
265	int events = 0;	526	int events = 0;
266		527
267	for (w = anfd->head; w; w = w->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
268	events |= w->events;	529	events |= w->events;
269		530
		531	#if EV_SELECT_IS_WINSOCKET
		532	if (events)
		533	{
		534	unsigned long argp;
		535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		537	}
		538	#endif
		539
270	anfd->reify = 0;	540	anfd->reify = 0;
271		541
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	543	anfd->events = events;
276	}
277	}	544	}
278		545
279	fdchangecnt = 0;	546	fdchangecnt = 0;
280	}	547	}
281		548
282	static void	549	void inline_size
283	fd_change (int fd)	550	fd_change (EV_P_ int fd)
284	{	551	{
285	if (anfds [fd].reify || fdchangecnt < 0)	552	if (expect_false (anfds [fd].reify))
286	return;	553	return;
287		554
288	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
289		556
290	++fdchangecnt;	557	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
293	}	560	}
294		561
295	static void	562	void inline_speed
296	fd_kill (int fd)	563	fd_kill (EV_P_ int fd)
297	{	564	{
298	struct ev_io *w;	565	ev_io *w;
299		566
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
302	{	568	{
303	ev_io_stop (w);	569	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	571	}
		572	}
		573
		574	int inline_size
		575	fd_valid (int fd)
		576	{
		577	#ifdef _WIN32
		578	return _get_osfhandle (fd) != -1;
		579	#else
		580	return fcntl (fd, F_GETFD) != -1;
		581	#endif
306	}	582	}
307		583
308	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
309	static void	585	static void noinline
310	fd_ebadf (void)	586	fd_ebadf (EV_P)
311	{	587	{
312	int fd;	588	int fd;
313		589
314	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	591	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	593	fd_kill (EV_A_ fd);
318	}	594	}
319		595
320	/* called on ENOMEM in select/poll to kill some fds and retry */	596	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	597	static void noinline
322	fd_enomem (void)	598	fd_enomem (EV_P)
323	{	599	{
324	int fd = anfdmax;	600	int fd;
325		601
326	while (fd--)	602	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	603	if (anfds [fd].events)
328	{	604	{
329	close (fd);
330	fd_kill (fd);	605	fd_kill (EV_A_ fd);
331	return;	606	return;
332	}	607	}
333	}	608	}
334		609
		610	/* usually called after fork if backend needs to re-arm all fds from scratch */
		611	static void noinline
		612	fd_rearm_all (EV_P)
		613	{
		614	int fd;
		615
		616	for (fd = 0; fd < anfdmax; ++fd)
		617	if (anfds [fd].events)
		618	{
		619	anfds [fd].events = 0;
		620	fd_change (EV_A_ fd);
		621	}
		622	}
		623
335	/*****************************************************************************/	624	/*****************************************************************************/
336		625
337	static struct ev_timer **timers;	626	void inline_speed
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void
344	upheap (WT *timers, int k)	627	upheap (WT *heap, int k)
345	{	628	{
346	WT w = timers [k];	629	WT w = heap [k];
347		630
348	while (k && timers [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
349	{	632	{
350	timers [k] = timers [k >> 1];	633	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	634	((W)heap [k])->active = k + 1;
352	k >>= 1;	635	k >>= 1;
353	}	636	}
354		637
355	timers [k] = w;	638	heap [k] = w;
356	timers [k]->active = k + 1;	639	((W)heap [k])->active = k + 1;
357		640
358	}	641	}
359		642
360	static void	643	void inline_speed
361	downheap (WT *timers, int N, int k)	644	downheap (WT *heap, int N, int k)
362	{	645	{
363	WT w = timers [k];	646	WT w = heap [k];
364		647
365	while (k < (N >> 1))	648	while (k < (N >> 1))
366	{	649	{
367	int j = k << 1;	650	int j = k << 1;
368		651
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	653	++j;
371		654
372	if (w->at <= timers [j]->at)	655	if (w->at <= heap [j]->at)
373	break;	656	break;
374		657
375	timers [k] = timers [j];	658	heap [k] = heap [j];
376	timers [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
377	k = j;	660	k = j;
378	}	661	}
379		662
380	timers [k] = w;	663	heap [k] = w;
381	timers [k]->active = k + 1;	664	((W)heap [k])->active = k + 1;
		665	}
		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
382	}	672	}
383		673
384	/*****************************************************************************/	674	/*****************************************************************************/
385		675
386	typedef struct	676	typedef struct
387	{	677	{
388	struct ev_signal *head;	678	WL head;
389	sig_atomic_t volatile gotsig;	679	sig_atomic_t volatile gotsig;
390	} ANSIG;	680	} ANSIG;
391		681
392	static ANSIG *signals;	682	static ANSIG *signals;
393	static int signalmax;	683	static int signalmax;
394		684
395	static int sigpipe [2];	685	static int sigpipe [2];
396	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
397	static struct ev_io sigev;	687	static ev_io sigev;
398		688
399	static void	689	void inline_size
400	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
401	{	691	{
402	while (count--)	692	while (count--)
403	{	693	{
404	base->head = 0;	694	base->head = 0;
…		…
409	}	699	}
410		700
411	static void	701	static void
412	sighandler (int signum)	702	sighandler (int signum)
413	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
414	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
415		709
416	if (!gotsig)	710	if (!gotsig)
417	{	711	{
		712	int old_errno = errno;
418	gotsig = 1;	713	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
		715	errno = old_errno;
420	}	716	}
		717	}
		718
		719	void noinline
		720	ev_feed_signal_event (EV_P_ int signum)
		721	{
		722	WL w;
		723
		724	#if EV_MULTIPLICITY
		725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		726	#endif
		727
		728	--signum;
		729
		730	if (signum < 0 || signum >= signalmax)
		731	return;
		732
		733	signals [signum].gotsig = 0;
		734
		735	for (w = signals [signum].head; w; w = w->next)
		736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
421	}	737	}
422		738
423	static void	739	static void
424	sigcb (struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
425	{	741	{
426	struct ev_signal *w;
427	int signum;	742	int signum;
428		743
429	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	745	gotsig = 0;
431		746
432	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
		749	ev_feed_signal_event (EV_A_ signum + 1);
		750	}
		751
		752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
		765	siginit (EV_P)
		766	{
		767	fd_intern (sigpipe [0]);
		768	fd_intern (sigpipe [1]);
		769
		770	ev_io_set (&sigev, sigpipe [0], EV_READ);
		771	ev_io_start (EV_A_ &sigev);
		772	ev_unref (EV_A); /* child watcher should not keep loop alive */
		773	}
		774
		775	/*****************************************************************************/
		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
		779	#ifndef _WIN32
		780
		781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
434	{	790	{
435	signals [signum].gotsig = 0;	791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
436		792	w->rpid = pid;
437	for (w = signals [signum].head; w; w = w->next)	793	w->rstatus = status;
438	event ((W)w, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
439	}	795	}
440	}	796	}
441
442	static void
443	siginit (void)
444	{
445	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif
453
454	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);
456	}
457
458	/*****************************************************************************/
459
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;
473
474	#ifndef WIN32
475		797
476	#ifndef WCONTINUED	798	#ifndef WCONTINUED
477	# define WCONTINUED 0	799	# define WCONTINUED 0
478	#endif	800	#endif
479		801
480	static void	802	static void
481	child_reap (struct ev_signal *sw, int chain, int pid, int status)
482	{
483	struct ev_child *w;
484
485	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)
486	if (w->pid == pid || !w->pid)
487	{
488	w->priority = sw->priority; /* need to do it *now* */
489	w->rpid = pid;
490	w->rstatus = status;
491	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
492	event ((W)w, EV_CHILD);
493	}
494	}
495
496	static void
497	childcb (struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
498	{	804	{
499	int pid, status;	805	int pid, status;
500		806
501	printf ("chld %x\n", revents);//D	807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
502	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
503	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
504	/* make sure we are called again until all childs have been reaped */	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
505	event ((W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
506		817
507	child_reap (sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
508	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
509	}
510	}	821	}
511		822
512	#endif	823	#endif
513		824
514	/*****************************************************************************/	825	/*****************************************************************************/
515		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
516	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
517	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
518	#endif	832	#endif
519	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
520	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
536	ev_version_minor (void)	850	ev_version_minor (void)
537	{	851	{
538	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
539	}	853	}
540		854
541	/* return true if we are running with elevated privileges and ignore env variables */	855	/* return true if we are running with elevated privileges and should ignore env variables */
542	static int	856	int inline_size
543	enable_secure ()	857	enable_secure (void)
544	{	858	{
		859	#ifdef _WIN32
		860	return 0;
		861	#else
545	return getuid () != geteuid ()	862	return getuid () != geteuid ()
546	|| getgid () != getegid ();	863	|| getgid () != getegid ();
		864	#endif
547	}	865	}
548		866
549	int ev_init (int methods)	867	unsigned int
		868	ev_supported_backends (void)
550	{	869	{
551	if (!ev_method)	870	unsigned int flags = 0;
		871
		872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
		883	{
		884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
552	{	923	{
553	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
554	{	925	{
555	struct timespec ts;	926	struct timespec ts;
556	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
557	have_monotonic = 1;	928	have_monotonic = 1;
558	}	929	}
559	#endif	930	#endif
560		931
561	ev_now = ev_time ();	932	ev_rt_now = ev_time ();
562	now = get_clock ();	933	mn_now = get_clock ();
563	now_floor = now;	934	now_floor = mn_now;
564	diff = ev_now - now;	935	rtmn_diff = ev_rt_now - mn_now;
565		936
566	if (pipe (sigpipe))	937	/* pid check not overridable via env */
567	return 0;	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
568		942
569	if (methods == EVMETHOD_AUTO)	943	if (!(flags & EVFLAG_NOENV)
570	if (!enable_secure () && getenv ("LIBEV_METHODS"))	944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
571	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
572	else
573	methods = EVMETHOD_ANY;
574		947
575	ev_method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
		953	#if EV_USE_INOTIFY
		954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		959	#endif
576	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
577	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
578	#endif	962	#endif
579	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
580	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
581	#endif	965	#endif
582	#if EV_USE_POLL	966	#if EV_USE_POLL
583	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
584	#endif	968	#endif
585	#if EV_USE_SELECT	969	#if EV_USE_SELECT
586	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
587	#endif	971	#endif
588		972
589	if (ev_method)	973	ev_init (&sigev, sigcb);
		974	ev_set_priority (&sigev, EV_MAXPRI);
		975	}
		976	}
		977
		978	static void noinline
		979	loop_destroy (EV_P)
		980	{
		981	int i;
		982
		983	#if EV_USE_INOTIFY
		984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		993	#endif
		994	#if EV_USE_KQUEUE
		995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		996	#endif
		997	#if EV_USE_EPOLL
		998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		999	#endif
		1000	#if EV_USE_POLL
		1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1002	#endif
		1003	#if EV_USE_SELECT
		1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1005	#endif
		1006
		1007	for (i = NUMPRI; i--; )
		1008	{
		1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
		1014
		1015	/* have to use the microsoft-never-gets-it-right macro */
		1016	array_free (fdchange, EMPTY);
		1017	array_free (timer, EMPTY);
		1018	#if EV_PERIODIC_ENABLE
		1019	array_free (periodic, EMPTY);
		1020	#endif
		1021	array_free (prepare, EMPTY);
		1022	array_free (check, EMPTY);
		1023
		1024	backend = 0;
		1025	}
		1026
		1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
		1030	loop_fork (EV_P)
		1031	{
		1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
		1038	#if EV_USE_EPOLL
		1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1040	#endif
		1041	#if EV_USE_INOTIFY
		1042	infy_fork (EV_A);
		1043	#endif
		1044
		1045	if (ev_is_active (&sigev))
		1046	{
		1047	/* default loop */
		1048
		1049	ev_ref (EV_A);
		1050	ev_io_stop (EV_A_ &sigev);
		1051	close (sigpipe [0]);
		1052	close (sigpipe [1]);
		1053
		1054	while (pipe (sigpipe))
		1055	syserr ("(libev) error creating pipe");
		1056
		1057	siginit (EV_A);
		1058	}
		1059
		1060	postfork = 0;
		1061	}
		1062
		1063	#if EV_MULTIPLICITY
		1064	struct ev_loop *
		1065	ev_loop_new (unsigned int flags)
		1066	{
		1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1068
		1069	memset (loop, 0, sizeof (struct ev_loop));
		1070
		1071	loop_init (EV_A_ flags);
		1072
		1073	if (ev_backend (EV_A))
		1074	return loop;
		1075
		1076	return 0;
		1077	}
		1078
		1079	void
		1080	ev_loop_destroy (EV_P)
		1081	{
		1082	loop_destroy (EV_A);
		1083	ev_free (loop);
		1084	}
		1085
		1086	void
		1087	ev_loop_fork (EV_P)
		1088	{
		1089	postfork = 1;
		1090	}
		1091
		1092	#endif
		1093
		1094	#if EV_MULTIPLICITY
		1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
		1097	#else
		1098	int
		1099	ev_default_loop (unsigned int flags)
		1100	#endif
		1101	{
		1102	if (sigpipe [0] == sigpipe [1])
		1103	if (pipe (sigpipe))
		1104	return 0;
		1105
		1106	if (!ev_default_loop_ptr)
		1107	{
		1108	#if EV_MULTIPLICITY
		1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1110	#else
		1111	ev_default_loop_ptr = 1;
		1112	#endif
		1113
		1114	loop_init (EV_A_ flags);
		1115
		1116	if (ev_backend (EV_A))
590	{	1117	{
591	ev_watcher_init (&sigev, sigcb);
592	ev_set_priority (&sigev, EV_MAXPRI);
593	siginit ();	1118	siginit (EV_A);
594		1119
595	#ifndef WIN32	1120	#ifndef _WIN32
596	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
597	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
598	ev_signal_start (&childev);	1123	ev_signal_start (EV_A_ &childev);
		1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1125	#endif
600	}	1126	}
		1127	else
		1128	ev_default_loop_ptr = 0;
601	}	1129	}
602		1130
603	return ev_method;	1131	return ev_default_loop_ptr;
		1132	}
		1133
		1134	void
		1135	ev_default_destroy (void)
		1136	{
		1137	#if EV_MULTIPLICITY
		1138	struct ev_loop *loop = ev_default_loop_ptr;
		1139	#endif
		1140
		1141	#ifndef _WIN32
		1142	ev_ref (EV_A); /* child watcher */
		1143	ev_signal_stop (EV_A_ &childev);
		1144	#endif
		1145
		1146	ev_ref (EV_A); /* signal watcher */
		1147	ev_io_stop (EV_A_ &sigev);
		1148
		1149	close (sigpipe [0]); sigpipe [0] = 0;
		1150	close (sigpipe [1]); sigpipe [1] = 0;
		1151
		1152	loop_destroy (EV_A);
		1153	}
		1154
		1155	void
		1156	ev_default_fork (void)
		1157	{
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
		1161
		1162	if (backend)
		1163	postfork = 1;
604	}	1164	}
605		1165
606	/*****************************************************************************/	1166	/*****************************************************************************/
607		1167
608	void	1168	void inline_speed
609	ev_fork_prepare (void)
610	{
611	/* nop */
612	}
613
614	void
615	ev_fork_parent (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_child (void)
622	{
623	#if EV_USE_EPOLL
624	if (ev_method == EVMETHOD_EPOLL)
625	epoll_postfork_child ();
626	#endif
627
628	ev_io_stop (&sigev);
629	close (sigpipe [0]);
630	close (sigpipe [1]);
631	pipe (sigpipe);
632	siginit ();
633	}
634
635	/*****************************************************************************/
636
637	static void
638	call_pending (void)	1169	call_pending (EV_P)
639	{	1170	{
640	int pri;	1171	int pri;
641		1172
642	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
643	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
644	{	1175	{
645	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
646		1177
647	if (p->w)	1178	if (expect_true (p->w))
648	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
649	p->w->pending = 0;	1182	p->w->pending = 0;
650	p->w->cb (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
651	}	1184	}
652	}	1185	}
653	}	1186	}
654		1187
655	static void	1188	void inline_size
656	timers_reify (void)	1189	timers_reify (EV_P)
657	{	1190	{
658	while (timercnt && timers [0]->at <= now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
659	{	1192	{
660	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
		1194
		1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
661		1196
662	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
663	if (w->repeat)	1198	if (w->repeat)
664	{	1199	{
665	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1201
666	w->at = now + w->repeat;	1202	((WT)w)->at += w->repeat;
		1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
667	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
668	}	1207	}
669	else	1208	else
670	ev_timer_stop (w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
671		1210
672	event ((W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
673	}	1212	}
674	}	1213	}
675		1214
676	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
677	periodics_reify (void)	1217	periodics_reify (EV_P)
678	{	1218	{
679	while (periodiccnt && periodics [0]->at <= ev_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
680	{	1220	{
681	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
		1222
		1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
682		1224
683	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
684	if (w->interval)	1226	if (w->reschedule_cb)
685	{	1227	{
		1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1230	downheap ((WT *)periodics, periodiccnt, 0);
		1231	}
		1232	else if (w->interval)
		1233	{
686	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
687	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
688	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
689	}	1237	}
690	else	1238	else
691	ev_periodic_stop (w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
692		1240
693	event ((W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
694	}	1242	}
695	}	1243	}
696		1244
697	static void	1245	static void noinline
698	periodics_reschedule (ev_tstamp diff)	1246	periodics_reschedule (EV_P)
699	{	1247	{
700	int i;	1248	int i;
701		1249
702	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
703	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
704	{	1252	{
705	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
706		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
707	if (w->interval)	1257	else if (w->interval)
		1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1259	}
		1260
		1261	/* now rebuild the heap */
		1262	for (i = periodiccnt >> 1; i--; )
		1263	downheap ((WT *)periodics, periodiccnt, i);
		1264	}
		1265	#endif
		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
708	{	1276	{
709	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
710		1279
711	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
712	{	1281	{
713	ev_periodic_stop (w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
714	ev_periodic_start (w);	1283	break;
715
716	i = 0; /* restart loop, inefficient, but time jumps should be rare */
717	}	1284	}
718	}	1285	}
719	}	1286	}
720	}	1287	}
		1288	#endif
721		1289
722	static int	1290	int inline_size
723	time_update_monotonic (void)	1291	time_update_monotonic (EV_P)
724	{	1292	{
725	now = get_clock ();	1293	mn_now = get_clock ();
726		1294
727	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
728	{	1296	{
729	ev_now = now + diff;	1297	ev_rt_now = rtmn_diff + mn_now;
730	return 0;	1298	return 0;
731	}	1299	}
732	else	1300	else
733	{	1301	{
734	now_floor = now;	1302	now_floor = mn_now;
735	ev_now = ev_time ();	1303	ev_rt_now = ev_time ();
736	return 1;	1304	return 1;
737	}	1305	}
738	}	1306	}
739		1307
740	static void	1308	void inline_size
741	time_update (void)	1309	time_update (EV_P)
742	{	1310	{
743	int i;	1311	int i;
744		1312
745	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
746	if (expect_true (have_monotonic))	1314	if (expect_true (have_monotonic))
747	{	1315	{
748	if (time_update_monotonic ())	1316	if (time_update_monotonic (EV_A))
749	{	1317	{
750	ev_tstamp odiff = diff;	1318	ev_tstamp odiff = rtmn_diff;
751		1319
752	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
753	{	1329	{
754	diff = ev_now - now;	1330	rtmn_diff = ev_rt_now - mn_now;
755		1331
756	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
757	return; /* all is well */	1333	return; /* all is well */
758		1334
759	ev_now = ev_time ();	1335	ev_rt_now = ev_time ();
760	now = get_clock ();	1336	mn_now = get_clock ();
761	now_floor = now;	1337	now_floor = mn_now;
762	}	1338	}
763		1339
		1340	# if EV_PERIODIC_ENABLE
764	periodics_reschedule (diff - odiff);	1341	periodics_reschedule (EV_A);
		1342	# endif
765	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
		1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
766	}	1345	}
767	}	1346	}
768	else	1347	else
769	#endif	1348	#endif
770	{	1349	{
771	ev_now = ev_time ();	1350	ev_rt_now = ev_time ();
772		1351
773	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
774	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
775	periodics_reschedule (ev_now - now);	1355	periodics_reschedule (EV_A);
		1356	#endif
776		1357
777	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
778	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
779	timers [i]->at += diff;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
780	}	1361	}
781		1362
782	now = ev_now;	1363	mn_now = ev_rt_now;
783	}	1364	}
784	}	1365	}
785		1366
786	int ev_loop_done;	1367	void
		1368	ev_ref (EV_P)
		1369	{
		1370	++activecnt;
		1371	}
787		1372
		1373	void
		1374	ev_unref (EV_P)
		1375	{
		1376	--activecnt;
		1377	}
		1378
		1379	static int loop_done;
		1380
		1381	void
788	void ev_loop (int flags)	1382	ev_loop (EV_P_ int flags)
789	{	1383	{
790	double block;
791	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
792		1389
793	do	1390	do
794	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
795	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
796	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
797	{	1413	{
798	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
799	call_pending ();	1415	call_pending (EV_A);
800	}	1416	}
801		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
		1421	/* we might have forked, so reify kernel state if necessary */
		1422	if (expect_false (postfork))
		1423	loop_fork (EV_A);
		1424
802	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
803	fd_reify ();	1426	fd_reify (EV_A);
804		1427
805	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
806		1431
807	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
808	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
		1434	else
		1435	{
		1436	/* update time to cancel out callback processing overhead */
809	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
810	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
811	time_update_monotonic ();	1439	time_update_monotonic (EV_A);
812	else	1440	else
813	#endif	1441	#endif
814	{	1442	{
815	ev_now = ev_time ();	1443	ev_rt_now = ev_time ();
816	now = ev_now;	1444	mn_now = ev_rt_now;
817	}	1445	}
818		1446
819	if (flags & EVLOOP_NONBLOCK || idlecnt)
820	block = 0.;
821	else
822	{
823	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
824		1448
825	if (timercnt)	1449	if (timercnt)
826	{	1450	{
827	ev_tstamp to = timers [0]->at - now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
828	if (block > to) block = to;	1452	if (block > to) block = to;
829	}	1453	}
830		1454
		1455	#if EV_PERIODIC_ENABLE
831	if (periodiccnt)	1456	if (periodiccnt)
832	{	1457	{
833	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
834	if (block > to) block = to;	1459	if (block > to) block = to;
835	}	1460	}
		1461	#endif
836		1462
837	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
838	}	1464	}
839		1465
840	method_poll (block);	1466	++loop_count;
		1467	backend_poll (EV_A_ block);
		1468	}
841		1469
842	/* update ev_now, do magic */	1470	/* update ev_rt_now, do magic */
843	time_update ();	1471	time_update (EV_A);
844		1472
845	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
846	timers_reify (); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
847	periodics_reify (); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
848		1478
		1479	#if EV_IDLE_ENABLE
849	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
850	if (!pendingcnt)	1481	idle_reify (EV_A);
851	queue_events ((W *)idles, idlecnt, EV_IDLE);	1482	#endif
852		1483
853	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
854	if (checkcnt)	1485	if (expect_false (checkcnt))
855	queue_events ((W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
856		1487
857	call_pending ();	1488	call_pending (EV_A);
858	}
859	while (!ev_loop_done);
860		1489
861	if (ev_loop_done != 2)	1490	}
		1491	while (expect_true (activecnt && !loop_done));
		1492
		1493	if (loop_done == EVUNLOOP_ONE)
		1494	loop_done = EVUNLOOP_CANCEL;
		1495	}
		1496
		1497	void
		1498	ev_unloop (EV_P_ int how)
		1499	{
862	ev_loop_done = 0;	1500	loop_done = how;
863	}	1501	}
864		1502
865	/*****************************************************************************/	1503	/*****************************************************************************/
866		1504
867	static void	1505	void inline_size
868	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
869	{	1507	{
870	elem->next = *head;	1508	elem->next = *head;
871	*head = elem;	1509	*head = elem;
872	}	1510	}
873		1511
874	static void	1512	void inline_size
875	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
876	{	1514	{
877	while (*head)	1515	while (*head)
878	{	1516	{
879	if (*head == elem)	1517	if (*head == elem)
…		…
884		1522
885	head = &(*head)->next;	1523	head = &(*head)->next;
886	}	1524	}
887	}	1525	}
888		1526
889	static void	1527	void inline_speed
890	ev_clear_pending (W w)	1528	clear_pending (EV_P_ W w)
891	{	1529	{
892	if (w->pending)	1530	if (w->pending)
893	{	1531	{
894	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
895	w->pending = 0;	1533	w->pending = 0;
896	}	1534	}
897	}	1535	}
898		1536
899	static void	1537	int
		1538	ev_clear_pending (EV_P_ void *w)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (!pending)
		1544	return 0;
		1545
		1546	w_->pending = 0;
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	p->w = 0;
		1549
		1550	return p->events;
		1551	}
		1552
		1553	void inline_size
		1554	pri_adjust (EV_P_ W w)
		1555	{
		1556	int pri = w->priority;
		1557	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1558	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1559	w->priority = pri;
		1560	}
		1561
		1562	void inline_speed
900	ev_start (W w, int active)	1563	ev_start (EV_P_ W w, int active)
901	{	1564	{
902	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1565	pri_adjust (EV_A_ w);
903	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
904
905	w->active = active;	1566	w->active = active;
		1567	ev_ref (EV_A);
906	}	1568	}
907		1569
908	static void	1570	void inline_size
909	ev_stop (W w)	1571	ev_stop (EV_P_ W w)
910	{	1572	{
		1573	ev_unref (EV_A);
911	w->active = 0;	1574	w->active = 0;
912	}	1575	}
913		1576
914	/*****************************************************************************/	1577	/*****************************************************************************/
915		1578
916	void	1579	void
917	ev_io_start (struct ev_io *w)	1580	ev_io_start (EV_P_ ev_io *w)
918	{	1581	{
919	int fd = w->fd;	1582	int fd = w->fd;
920		1583
921	if (ev_is_active (w))	1584	if (expect_false (ev_is_active (w)))
922	return;	1585	return;
923		1586
924	assert (("ev_io_start called with negative fd", fd >= 0));	1587	assert (("ev_io_start called with negative fd", fd >= 0));
925		1588
926	ev_start ((W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
927	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1590	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
928	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1591	wlist_add ((WL *)&anfds[fd].head, (WL)w);
929		1592
930	fd_change (fd);	1593	fd_change (EV_A_ fd);
931	}	1594	}
932		1595
933	void	1596	void
934	ev_io_stop (struct ev_io *w)	1597	ev_io_stop (EV_P_ ev_io *w)
935	{	1598	{
936	ev_clear_pending ((W)w);	1599	clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
938	return;	1601	return;
		1602
		1603	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
939		1604
940	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1605	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
941	ev_stop ((W)w);	1606	ev_stop (EV_A_ (W)w);
942		1607
943	fd_change (w->fd);	1608	fd_change (EV_A_ w->fd);
944	}	1609	}
945		1610
946	void	1611	void
947	ev_timer_start (struct ev_timer *w)	1612	ev_timer_start (EV_P_ ev_timer *w)
948	{	1613	{
949	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
950	return;	1615	return;
951		1616
952	w->at += now;	1617	((WT)w)->at += mn_now;
953		1618
954	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1619	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
955		1620
956	ev_start ((W)w, ++timercnt);	1621	ev_start (EV_A_ (W)w, ++timercnt);
957	array_needsize (timers, timermax, timercnt, );	1622	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
958	timers [timercnt - 1] = w;	1623	timers [timercnt - 1] = w;
959	upheap ((WT *)timers, timercnt - 1);	1624	upheap ((WT *)timers, timercnt - 1);
960	}
961		1625
		1626	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1627	}
		1628
962	void	1629	void
963	ev_timer_stop (struct ev_timer *w)	1630	ev_timer_stop (EV_P_ ev_timer *w)
964	{	1631	{
965	ev_clear_pending ((W)w);	1632	clear_pending (EV_A_ (W)w);
966	if (!ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
967	return;	1634	return;
968		1635
969	if (w->active < timercnt--)	1636	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1637
		1638	{
		1639	int active = ((W)w)->active;
		1640
		1641	if (expect_true (--active < --timercnt))
970	{	1642	{
971	timers [w->active - 1] = timers [timercnt];	1643	timers [active] = timers [timercnt];
972	downheap ((WT *)timers, timercnt, w->active - 1);	1644	adjustheap ((WT *)timers, timercnt, active);
973	}	1645	}
		1646	}
974		1647
975	w->at = w->repeat;	1648	((WT)w)->at -= mn_now;
976		1649
977	ev_stop ((W)w);	1650	ev_stop (EV_A_ (W)w);
978	}	1651	}
979		1652
980	void	1653	void
981	ev_timer_again (struct ev_timer *w)	1654	ev_timer_again (EV_P_ ev_timer *w)
982	{	1655	{
983	if (ev_is_active (w))	1656	if (ev_is_active (w))
984	{	1657	{
985	if (w->repeat)	1658	if (w->repeat)
986	{	1659	{
987	w->at = now + w->repeat;	1660	((WT)w)->at = mn_now + w->repeat;
988	downheap ((WT *)timers, timercnt, w->active - 1);	1661	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
989	}	1662	}
990	else	1663	else
991	ev_timer_stop (w);	1664	ev_timer_stop (EV_A_ w);
992	}	1665	}
993	else if (w->repeat)	1666	else if (w->repeat)
		1667	{
		1668	w->at = w->repeat;
994	ev_timer_start (w);	1669	ev_timer_start (EV_A_ w);
		1670	}
995	}	1671	}
996		1672
		1673	#if EV_PERIODIC_ENABLE
997	void	1674	void
998	ev_periodic_start (struct ev_periodic *w)	1675	ev_periodic_start (EV_P_ ev_periodic *w)
999	{	1676	{
1000	if (ev_is_active (w))	1677	if (expect_false (ev_is_active (w)))
1001	return;	1678	return;
1002		1679
		1680	if (w->reschedule_cb)
		1681	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1682	else if (w->interval)
		1683	{
1003	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1684	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1004
1005	/* this formula differs from the one in periodic_reify because we do not always round up */	1685	/* this formula differs from the one in periodic_reify because we do not always round up */
1006	if (w->interval)
1007	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1686	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1687	}
1008		1688
1009	ev_start ((W)w, ++periodiccnt);	1689	ev_start (EV_A_ (W)w, ++periodiccnt);
1010	array_needsize (periodics, periodicmax, periodiccnt, );	1690	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1011	periodics [periodiccnt - 1] = w;	1691	periodics [periodiccnt - 1] = w;
1012	upheap ((WT *)periodics, periodiccnt - 1);	1692	upheap ((WT *)periodics, periodiccnt - 1);
1013	}
1014		1693
		1694	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1695	}
		1696
1015	void	1697	void
1016	ev_periodic_stop (struct ev_periodic *w)	1698	ev_periodic_stop (EV_P_ ev_periodic *w)
1017	{	1699	{
1018	ev_clear_pending ((W)w);	1700	clear_pending (EV_A_ (W)w);
1019	if (!ev_is_active (w))	1701	if (expect_false (!ev_is_active (w)))
1020	return;	1702	return;
1021		1703
1022	if (w->active < periodiccnt--)	1704	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1705
		1706	{
		1707	int active = ((W)w)->active;
		1708
		1709	if (expect_true (--active < --periodiccnt))
1023	{	1710	{
1024	periodics [w->active - 1] = periodics [periodiccnt];	1711	periodics [active] = periodics [periodiccnt];
1025	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1712	adjustheap ((WT *)periodics, periodiccnt, active);
1026	}	1713	}
		1714	}
1027		1715
1028	ev_stop ((W)w);	1716	ev_stop (EV_A_ (W)w);
1029	}	1717	}
		1718
		1719	void
		1720	ev_periodic_again (EV_P_ ev_periodic *w)
		1721	{
		1722	/* TODO: use adjustheap and recalculation */
		1723	ev_periodic_stop (EV_A_ w);
		1724	ev_periodic_start (EV_A_ w);
		1725	}
		1726	#endif
1030		1727
1031	#ifndef SA_RESTART	1728	#ifndef SA_RESTART
1032	# define SA_RESTART 0	1729	# define SA_RESTART 0
1033	#endif	1730	#endif
1034		1731
1035	void	1732	void
1036	ev_signal_start (struct ev_signal *w)	1733	ev_signal_start (EV_P_ ev_signal *w)
1037	{	1734	{
		1735	#if EV_MULTIPLICITY
		1736	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1737	#endif
1038	if (ev_is_active (w))	1738	if (expect_false (ev_is_active (w)))
1039	return;	1739	return;
1040		1740
1041	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1741	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1042		1742
1043	ev_start ((W)w, 1);	1743	ev_start (EV_A_ (W)w, 1);
1044	array_needsize (signals, signalmax, w->signum, signals_init);	1744	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1045	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1745	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1046		1746
1047	if (!w->next)	1747	if (!((WL)w)->next)
1048	{	1748	{
		1749	#if _WIN32
		1750	signal (w->signum, sighandler);
		1751	#else
1049	struct sigaction sa;	1752	struct sigaction sa;
1050	sa.sa_handler = sighandler;	1753	sa.sa_handler = sighandler;
1051	sigfillset (&sa.sa_mask);	1754	sigfillset (&sa.sa_mask);
1052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1755	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1053	sigaction (w->signum, &sa, 0);	1756	sigaction (w->signum, &sa, 0);
		1757	#endif
1054	}	1758	}
1055	}	1759	}
1056		1760
1057	void	1761	void
1058	ev_signal_stop (struct ev_signal *w)	1762	ev_signal_stop (EV_P_ ev_signal *w)
1059	{	1763	{
1060	ev_clear_pending ((W)w);	1764	clear_pending (EV_A_ (W)w);
1061	if (!ev_is_active (w))	1765	if (expect_false (!ev_is_active (w)))
1062	return;	1766	return;
1063		1767
1064	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1768	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1065	ev_stop ((W)w);	1769	ev_stop (EV_A_ (W)w);
1066		1770
1067	if (!signals [w->signum - 1].head)	1771	if (!signals [w->signum - 1].head)
1068	signal (w->signum, SIG_DFL);	1772	signal (w->signum, SIG_DFL);
1069	}	1773	}
1070		1774
1071	void	1775	void
1072	ev_idle_start (struct ev_idle *w)	1776	ev_child_start (EV_P_ ev_child *w)
1073	{	1777	{
		1778	#if EV_MULTIPLICITY
		1779	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1780	#endif
1074	if (ev_is_active (w))	1781	if (expect_false (ev_is_active (w)))
1075	return;	1782	return;
1076		1783
1077	ev_start ((W)w, ++idlecnt);	1784	ev_start (EV_A_ (W)w, 1);
1078	array_needsize (idles, idlemax, idlecnt, );	1785	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1079	idles [idlecnt - 1] = w;
1080	}	1786	}
1081		1787
1082	void	1788	void
1083	ev_idle_stop (struct ev_idle *w)	1789	ev_child_stop (EV_P_ ev_child *w)
1084	{	1790	{
1085	ev_clear_pending ((W)w);	1791	clear_pending (EV_A_ (W)w);
1086	if (ev_is_active (w))	1792	if (expect_false (!ev_is_active (w)))
1087	return;	1793	return;
1088		1794
1089	idles [w->active - 1] = idles [--idlecnt];	1795	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1090	ev_stop ((W)w);	1796	ev_stop (EV_A_ (W)w);
1091	}	1797	}
1092		1798
		1799	#if EV_STAT_ENABLE
		1800
		1801	# ifdef _WIN32
		1802	# undef lstat
		1803	# define lstat(a,b) _stati64 (a,b)
		1804	# endif
		1805
		1806	#define DEF_STAT_INTERVAL 5.0074891
		1807	#define MIN_STAT_INTERVAL 0.1074891
		1808
		1809	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1810
		1811	#if EV_USE_INOTIFY
		1812	# define EV_INOTIFY_BUFSIZE 8192
		1813
		1814	static void noinline
		1815	infy_add (EV_P_ ev_stat *w)
		1816	{
		1817	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);
		1818
		1819	if (w->wd < 0)
		1820	{
		1821	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1822
		1823	/* monitor some parent directory for speedup hints */
		1824	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1825	{
		1826	char path [4096];
		1827	strcpy (path, w->path);
		1828
		1829	do
		1830	{
		1831	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1832	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1833
		1834	char *pend = strrchr (path, '/');
		1835
		1836	if (!pend)
		1837	break; /* whoops, no '/', complain to your admin */
		1838
		1839	*pend = 0;
		1840	w->wd = inotify_add_watch (fs_fd, path, mask);
		1841	}
		1842	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1843	}
		1844	}
		1845	else
		1846	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1847
		1848	if (w->wd >= 0)
		1849	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1850	}
		1851
		1852	static void noinline
		1853	infy_del (EV_P_ ev_stat *w)
		1854	{
		1855	int slot;
		1856	int wd = w->wd;
		1857
		1858	if (wd < 0)
		1859	return;
		1860
		1861	w->wd = -2;
		1862	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1863	wlist_del (&fs_hash [slot].head, (WL)w);
		1864
		1865	/* remove this watcher, if others are watching it, they will rearm */
		1866	inotify_rm_watch (fs_fd, wd);
		1867	}
		1868
		1869	static void noinline
		1870	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1871	{
		1872	if (slot < 0)
		1873	/* overflow, need to check for all hahs slots */
		1874	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1875	infy_wd (EV_A_ slot, wd, ev);
		1876	else
		1877	{
		1878	WL w_;
		1879
		1880	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1881	{
		1882	ev_stat *w = (ev_stat *)w_;
		1883	w_ = w_->next; /* lets us remove this watcher and all before it */
		1884
		1885	if (w->wd == wd || wd == -1)
		1886	{
		1887	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1888	{
		1889	w->wd = -1;
		1890	infy_add (EV_A_ w); /* re-add, no matter what */
		1891	}
		1892
		1893	stat_timer_cb (EV_A_ &w->timer, 0);
		1894	}
		1895	}
		1896	}
		1897	}
		1898
		1899	static void
		1900	infy_cb (EV_P_ ev_io *w, int revents)
		1901	{
		1902	char buf [EV_INOTIFY_BUFSIZE];
		1903	struct inotify_event *ev = (struct inotify_event *)buf;
		1904	int ofs;
		1905	int len = read (fs_fd, buf, sizeof (buf));
		1906
		1907	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1908	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1909	}
		1910
		1911	void inline_size
		1912	infy_init (EV_P)
		1913	{
		1914	if (fs_fd != -2)
		1915	return;
		1916
		1917	fs_fd = inotify_init ();
		1918
		1919	if (fs_fd >= 0)
		1920	{
		1921	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1922	ev_set_priority (&fs_w, EV_MAXPRI);
		1923	ev_io_start (EV_A_ &fs_w);
		1924	}
		1925	}
		1926
		1927	void inline_size
		1928	infy_fork (EV_P)
		1929	{
		1930	int slot;
		1931
		1932	if (fs_fd < 0)
		1933	return;
		1934
		1935	close (fs_fd);
		1936	fs_fd = inotify_init ();
		1937
		1938	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1939	{
		1940	WL w_ = fs_hash [slot].head;
		1941	fs_hash [slot].head = 0;
		1942
		1943	while (w_)
		1944	{
		1945	ev_stat *w = (ev_stat *)w_;
		1946	w_ = w_->next; /* lets us add this watcher */
		1947
		1948	w->wd = -1;
		1949
		1950	if (fs_fd >= 0)
		1951	infy_add (EV_A_ w); /* re-add, no matter what */
		1952	else
		1953	ev_timer_start (EV_A_ &w->timer);
		1954	}
		1955
		1956	}
		1957	}
		1958
		1959	#endif
		1960
1093	void	1961	void
		1962	ev_stat_stat (EV_P_ ev_stat *w)
		1963	{
		1964	if (lstat (w->path, &w->attr) < 0)
		1965	w->attr.st_nlink = 0;
		1966	else if (!w->attr.st_nlink)
		1967	w->attr.st_nlink = 1;
		1968	}
		1969
		1970	static void noinline
		1971	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1972	{
		1973	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1974
		1975	/* we copy this here each the time so that */
		1976	/* prev has the old value when the callback gets invoked */
		1977	w->prev = w->attr;
		1978	ev_stat_stat (EV_A_ w);
		1979
		1980	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1981	if (
		1982	w->prev.st_dev != w->attr.st_dev
		1983	|| w->prev.st_ino != w->attr.st_ino
		1984	|| w->prev.st_mode != w->attr.st_mode
		1985	|| w->prev.st_nlink != w->attr.st_nlink
		1986	|| w->prev.st_uid != w->attr.st_uid
		1987	|| w->prev.st_gid != w->attr.st_gid
		1988	|| w->prev.st_rdev != w->attr.st_rdev
		1989	|| w->prev.st_size != w->attr.st_size
		1990	|| w->prev.st_atime != w->attr.st_atime
		1991	|| w->prev.st_mtime != w->attr.st_mtime
		1992	|| w->prev.st_ctime != w->attr.st_ctime
		1993	) {
		1994	#if EV_USE_INOTIFY
		1995	infy_del (EV_A_ w);
		1996	infy_add (EV_A_ w);
		1997	ev_stat_stat (EV_A_ w); /* avoid race... */
		1998	#endif
		1999
		2000	ev_feed_event (EV_A_ w, EV_STAT);
		2001	}
		2002	}
		2003
		2004	void
		2005	ev_stat_start (EV_P_ ev_stat *w)
		2006	{
		2007	if (expect_false (ev_is_active (w)))
		2008	return;
		2009
		2010	/* since we use memcmp, we need to clear any padding data etc. */
		2011	memset (&w->prev, 0, sizeof (ev_statdata));
		2012	memset (&w->attr, 0, sizeof (ev_statdata));
		2013
		2014	ev_stat_stat (EV_A_ w);
		2015
		2016	if (w->interval < MIN_STAT_INTERVAL)
		2017	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2018
		2019	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2020	ev_set_priority (&w->timer, ev_priority (w));
		2021
		2022	#if EV_USE_INOTIFY
		2023	infy_init (EV_A);
		2024
		2025	if (fs_fd >= 0)
		2026	infy_add (EV_A_ w);
		2027	else
		2028	#endif
		2029	ev_timer_start (EV_A_ &w->timer);
		2030
		2031	ev_start (EV_A_ (W)w, 1);
		2032	}
		2033
		2034	void
		2035	ev_stat_stop (EV_P_ ev_stat *w)
		2036	{
		2037	clear_pending (EV_A_ (W)w);
		2038	if (expect_false (!ev_is_active (w)))
		2039	return;
		2040
		2041	#if EV_USE_INOTIFY
		2042	infy_del (EV_A_ w);
		2043	#endif
		2044	ev_timer_stop (EV_A_ &w->timer);
		2045
		2046	ev_stop (EV_A_ (W)w);
		2047	}
		2048	#endif
		2049
		2050	#if EV_IDLE_ENABLE
		2051	void
		2052	ev_idle_start (EV_P_ ev_idle *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
		2055	return;
		2056
		2057	pri_adjust (EV_A_ (W)w);
		2058
		2059	{
		2060	int active = ++idlecnt [ABSPRI (w)];
		2061
		2062	++idleall;
		2063	ev_start (EV_A_ (W)w, active);
		2064
		2065	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2066	idles [ABSPRI (w)][active - 1] = w;
		2067	}
		2068	}
		2069
		2070	void
		2071	ev_idle_stop (EV_P_ ev_idle *w)
		2072	{
		2073	clear_pending (EV_A_ (W)w);
		2074	if (expect_false (!ev_is_active (w)))
		2075	return;
		2076
		2077	{
		2078	int active = ((W)w)->active;
		2079
		2080	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2081	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2082
		2083	ev_stop (EV_A_ (W)w);
		2084	--idleall;
		2085	}
		2086	}
		2087	#endif
		2088
		2089	void
1094	ev_prepare_start (struct ev_prepare *w)	2090	ev_prepare_start (EV_P_ ev_prepare *w)
1095	{	2091	{
1096	if (ev_is_active (w))	2092	if (expect_false (ev_is_active (w)))
1097	return;	2093	return;
1098		2094
1099	ev_start ((W)w, ++preparecnt);	2095	ev_start (EV_A_ (W)w, ++preparecnt);
1100	array_needsize (prepares, preparemax, preparecnt, );	2096	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1101	prepares [preparecnt - 1] = w;	2097	prepares [preparecnt - 1] = w;
1102	}	2098	}
1103		2099
1104	void	2100	void
1105	ev_prepare_stop (struct ev_prepare *w)	2101	ev_prepare_stop (EV_P_ ev_prepare *w)
1106	{	2102	{
1107	ev_clear_pending ((W)w);	2103	clear_pending (EV_A_ (W)w);
1108	if (ev_is_active (w))	2104	if (expect_false (!ev_is_active (w)))
1109	return;	2105	return;
1110		2106
		2107	{
		2108	int active = ((W)w)->active;
1111	prepares [w->active - 1] = prepares [--preparecnt];	2109	prepares [active - 1] = prepares [--preparecnt];
		2110	((W)prepares [active - 1])->active = active;
		2111	}
		2112
1112	ev_stop ((W)w);	2113	ev_stop (EV_A_ (W)w);
1113	}	2114	}
1114		2115
1115	void	2116	void
1116	ev_check_start (struct ev_check *w)	2117	ev_check_start (EV_P_ ev_check *w)
1117	{	2118	{
1118	if (ev_is_active (w))	2119	if (expect_false (ev_is_active (w)))
1119	return;	2120	return;
1120		2121
1121	ev_start ((W)w, ++checkcnt);	2122	ev_start (EV_A_ (W)w, ++checkcnt);
1122	array_needsize (checks, checkmax, checkcnt, );	2123	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1123	checks [checkcnt - 1] = w;	2124	checks [checkcnt - 1] = w;
1124	}	2125	}
1125		2126
1126	void	2127	void
1127	ev_check_stop (struct ev_check *w)	2128	ev_check_stop (EV_P_ ev_check *w)
1128	{	2129	{
1129	ev_clear_pending ((W)w);	2130	clear_pending (EV_A_ (W)w);
1130	if (ev_is_active (w))	2131	if (expect_false (!ev_is_active (w)))
1131	return;	2132	return;
1132		2133
		2134	{
		2135	int active = ((W)w)->active;
1133	checks [w->active - 1] = checks [--checkcnt];	2136	checks [active - 1] = checks [--checkcnt];
		2137	((W)checks [active - 1])->active = active;
		2138	}
		2139
1134	ev_stop ((W)w);	2140	ev_stop (EV_A_ (W)w);
1135	}	2141	}
1136		2142
1137	void	2143	#if EV_EMBED_ENABLE
1138	ev_child_start (struct ev_child *w)	2144	void noinline
		2145	ev_embed_sweep (EV_P_ ev_embed *w)
1139	{	2146	{
		2147	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2148	}
		2149
		2150	static void
		2151	embed_cb (EV_P_ ev_io *io, int revents)
		2152	{
		2153	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2154
1140	if (ev_is_active (w))	2155	if (ev_cb (w))
1141	return;	2156	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2157	else
		2158	ev_embed_sweep (loop, w);
		2159	}
1142		2160
		2161	void
		2162	ev_embed_start (EV_P_ ev_embed *w)
		2163	{
		2164	if (expect_false (ev_is_active (w)))
		2165	return;
		2166
		2167	{
		2168	struct ev_loop *loop = w->loop;
		2169	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2170	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2171	}
		2172
		2173	ev_set_priority (&w->io, ev_priority (w));
		2174	ev_io_start (EV_A_ &w->io);
		2175
1143	ev_start ((W)w, 1);	2176	ev_start (EV_A_ (W)w, 1);
1144	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1145	}	2177	}
1146		2178
1147	void	2179	void
1148	ev_child_stop (struct ev_child *w)	2180	ev_embed_stop (EV_P_ ev_embed *w)
1149	{	2181	{
1150	ev_clear_pending ((W)w);	2182	clear_pending (EV_A_ (W)w);
1151	if (ev_is_active (w))	2183	if (expect_false (!ev_is_active (w)))
1152	return;	2184	return;
1153		2185
1154	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2186	ev_io_stop (EV_A_ &w->io);
		2187
1155	ev_stop ((W)w);	2188	ev_stop (EV_A_ (W)w);
1156	}	2189	}
		2190	#endif
		2191
		2192	#if EV_FORK_ENABLE
		2193	void
		2194	ev_fork_start (EV_P_ ev_fork *w)
		2195	{
		2196	if (expect_false (ev_is_active (w)))
		2197	return;
		2198
		2199	ev_start (EV_A_ (W)w, ++forkcnt);
		2200	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2201	forks [forkcnt - 1] = w;
		2202	}
		2203
		2204	void
		2205	ev_fork_stop (EV_P_ ev_fork *w)
		2206	{
		2207	clear_pending (EV_A_ (W)w);
		2208	if (expect_false (!ev_is_active (w)))
		2209	return;
		2210
		2211	{
		2212	int active = ((W)w)->active;
		2213	forks [active - 1] = forks [--forkcnt];
		2214	((W)forks [active - 1])->active = active;
		2215	}
		2216
		2217	ev_stop (EV_A_ (W)w);
		2218	}
		2219	#endif
1157		2220
1158	/*****************************************************************************/	2221	/*****************************************************************************/
1159		2222
1160	struct ev_once	2223	struct ev_once
1161	{	2224	{
1162	struct ev_io io;	2225	ev_io io;
1163	struct ev_timer to;	2226	ev_timer to;
1164	void (*cb)(int revents, void *arg);	2227	void (*cb)(int revents, void *arg);
1165	void *arg;	2228	void *arg;
1166	};	2229	};
1167		2230
1168	static void	2231	static void
1169	once_cb (struct ev_once *once, int revents)	2232	once_cb (EV_P_ struct ev_once *once, int revents)
1170	{	2233	{
1171	void (*cb)(int revents, void *arg) = once->cb;	2234	void (*cb)(int revents, void *arg) = once->cb;
1172	void *arg = once->arg;	2235	void *arg = once->arg;
1173		2236
1174	ev_io_stop (&once->io);	2237	ev_io_stop (EV_A_ &once->io);
1175	ev_timer_stop (&once->to);	2238	ev_timer_stop (EV_A_ &once->to);
1176	free (once);	2239	ev_free (once);
1177		2240
1178	cb (revents, arg);	2241	cb (revents, arg);
1179	}	2242	}
1180		2243
1181	static void	2244	static void
1182	once_cb_io (struct ev_io *w, int revents)	2245	once_cb_io (EV_P_ ev_io *w, int revents)
1183	{	2246	{
1184	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2247	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1185	}	2248	}
1186		2249
1187	static void	2250	static void
1188	once_cb_to (struct ev_timer *w, int revents)	2251	once_cb_to (EV_P_ ev_timer *w, int revents)
1189	{	2252	{
1190	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2253	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1191	}	2254	}
1192		2255
1193	void	2256	void
1194	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2257	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1195	{	2258	{
1196	struct ev_once *once = malloc (sizeof (struct ev_once));	2259	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1197		2260
1198	if (!once)	2261	if (expect_false (!once))
		2262	{
1199	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2263	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1200	else	2264	return;
1201	{	2265	}
		2266
1202	once->cb = cb;	2267	once->cb = cb;
1203	once->arg = arg;	2268	once->arg = arg;
1204		2269
1205	ev_watcher_init (&once->io, once_cb_io);	2270	ev_init (&once->io, once_cb_io);
1206	if (fd >= 0)	2271	if (fd >= 0)
1207	{	2272	{
1208	ev_io_set (&once->io, fd, events);	2273	ev_io_set (&once->io, fd, events);
1209	ev_io_start (&once->io);	2274	ev_io_start (EV_A_ &once->io);
1210	}	2275	}
1211		2276
1212	ev_watcher_init (&once->to, once_cb_to);	2277	ev_init (&once->to, once_cb_to);
1213	if (timeout >= 0.)	2278	if (timeout >= 0.)
1214	{	2279	{
1215	ev_timer_set (&once->to, timeout, 0.);	2280	ev_timer_set (&once->to, timeout, 0.);
1216	ev_timer_start (&once->to);	2281	ev_timer_start (EV_A_ &once->to);
1217	}
1218	}
1219	}
1220
1221	/*****************************************************************************/
1222
1223	#if 0
1224
1225	struct ev_io wio;
1226
1227	static void
1228	sin_cb (struct ev_io *w, int revents)
1229	{
1230	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1231	}
1232
1233	static void
1234	ocb (struct ev_timer *w, int revents)
1235	{
1236	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1237	ev_timer_stop (w);
1238	ev_timer_start (w);
1239	}
1240
1241	static void
1242	scb (struct ev_signal *w, int revents)
1243	{
1244	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1245	ev_io_stop (&wio);
1246	ev_io_start (&wio);
1247	}
1248
1249	static void
1250	gcb (struct ev_signal *w, int revents)
1251	{
1252	fprintf (stderr, "generic %x\n", revents);
1253
1254	}
1255
1256	int main (void)
1257	{
1258	ev_init (0);
1259
1260	ev_io_init (&wio, sin_cb, 0, EV_READ);
1261	ev_io_start (&wio);
1262
1263	struct ev_timer t[10000];
1264
1265	#if 0
1266	int i;
1267	for (i = 0; i < 10000; ++i)
1268	{	2282	}
1269	struct ev_timer *w = t + i;
1270	ev_watcher_init (w, ocb, i);
1271	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1272	ev_timer_start (w);
1273	if (drand48 () < 0.5)
1274	ev_timer_stop (w);
1275	}
1276	#endif
1277
1278	struct ev_timer t1;
1279	ev_timer_init (&t1, ocb, 5, 10);
1280	ev_timer_start (&t1);
1281
1282	struct ev_signal sig;
1283	ev_signal_init (&sig, scb, SIGQUIT);
1284	ev_signal_start (&sig);
1285
1286	struct ev_check cw;
1287	ev_check_init (&cw, gcb);
1288	ev_check_start (&cw);
1289
1290	struct ev_idle iw;
1291	ev_idle_init (&iw, gcb);
1292	ev_idle_start (&iw);
1293
1294	ev_loop (0);
1295
1296	return 0;
1297	}	2283	}
1298		2284
		2285	#ifdef __cplusplus
		2286	}
1299	#endif	2287	#endif
1300		2288
1301
1302
1303

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