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Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.165 by root, Fri Dec 7 18:09:38 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	childcb (struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
482	{	804	{
483	struct ev_child *w;
484	int pid, status;	805	int pid, status;
485		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	809	if (!WCONTINUED
488	if (w->pid == pid || !w->pid)	810	|| errno != EINVAL
489	{	811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
490	w->status = status;	812	return;
491	event ((W)w, EV_CHILD);	813
492	}	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 */
		816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		817
		818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
		820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
493	}	821	}
494		822
495	#endif	823	#endif
496		824
497	/*****************************************************************************/	825	/*****************************************************************************/
498		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
499	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
500	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
501	#endif	832	#endif
502	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
503	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
519	ev_version_minor (void)	850	ev_version_minor (void)
520	{	851	{
521	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
522	}	853	}
523		854
524	/* 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 */
525	static int	856	int inline_size
526	enable_secure ()	857	enable_secure (void)
527	{	858	{
		859	#ifdef _WIN32
		860	return 0;
		861	#else
528	return getuid () != geteuid ()	862	return getuid () != geteuid ()
529	|| getgid () != getegid ();	863	|| getgid () != getegid ();
		864	#endif
530	}	865	}
531		866
532	int ev_init (int methods)	867	unsigned int
		868	ev_supported_backends (void)
533	{	869	{
534	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)
535	{	923	{
536	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
537	{	925	{
538	struct timespec ts;	926	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	928	have_monotonic = 1;
541	}	929	}
542	#endif	930	#endif
543		931
544	ev_now = ev_time ();	932	ev_rt_now = ev_time ();
545	now = get_clock ();	933	mn_now = get_clock ();
546	now_floor = now;	934	now_floor = mn_now;
547	diff = ev_now - now;	935	rtmn_diff = ev_rt_now - mn_now;
548		936
549	if (pipe (sigpipe))	937	/* pid check not overridable via env */
550	return 0;	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
551		942
552	if (methods == EVMETHOD_AUTO)	943	if (!(flags & EVFLAG_NOENV)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
555	else
556	methods = EVMETHOD_ANY;
557		947
558	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
559	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
561	#endif	962	#endif
562	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
564	#endif	965	#endif
565	#if EV_USE_POLL	966	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
567	#endif	968	#endif
568	#if EV_USE_SELECT	969	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
570	#endif	971	#endif
571		972
572	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))
573	{	1117	{
574	ev_watcher_init (&sigev, sigcb);
575	siginit ();	1118	siginit (EV_A);
576		1119
577	#ifndef WIN32	1120	#ifndef _WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
		1122	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	1123	ev_signal_start (EV_A_ &childev);
		1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	1125	#endif
581	}	1126	}
		1127	else
		1128	ev_default_loop_ptr = 0;
582	}	1129	}
583		1130
584	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;
585	}	1164	}
586		1165
587	/*****************************************************************************/	1166	/*****************************************************************************/
588		1167
589	void	1168	void inline_speed
590	ev_fork_prepare (void)
591	{
592	/* nop */
593	}
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif
608
609	ev_io_stop (&sigev);
610	close (sigpipe [0]);
611	close (sigpipe [1]);
612	pipe (sigpipe);
613	siginit ();
614	}
615
616	/*****************************************************************************/
617
618	static void
619	call_pending (void)	1169	call_pending (EV_P)
620	{	1170	{
621	int pri;	1171	int pri;
622		1172
623	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
625	{	1175	{
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		1177
628	if (p->w)	1178	if (expect_true (p->w))
629	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
630	p->w->pending = 0;	1182	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
632	}	1184	}
633	}	1185	}
634	}	1186	}
635		1187
636	static void	1188	void inline_size
637	timers_reify (void)	1189	timers_reify (EV_P)
638	{	1190	{
639	while (timercnt && timers [0]->at <= now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	1192	{
641	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)));*/
642		1196
643	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
644	if (w->repeat)	1198	if (w->repeat)
645	{	1199	{
646	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
647	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
648	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
649	}	1207	}
650	else	1208	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		1210
653	event ((W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
654	}	1212	}
655	}	1213	}
656		1214
657	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
658	periodics_reify (void)	1217	periodics_reify (EV_P)
659	{	1218	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
661	{	1220	{
662	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)));*/
663		1224
664	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
665	if (w->interval)	1226	if (w->reschedule_cb)
666	{	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	{
667	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;
668	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));
669	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
670	}	1237	}
671	else	1238	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1240
674	event ((W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
675	}	1242	}
676	}	1243	}
677		1244
678	static void	1245	static void noinline
679	periodics_reschedule (ev_tstamp diff)	1246	periodics_reschedule (EV_P)
680	{	1247	{
681	int i;	1248	int i;
682		1249
683	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
685	{	1252	{
686	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
687		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
688	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--; )
689	{	1276	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
691		1279
692	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
693	{	1281	{
694	ev_periodic_stop (w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
695	ev_periodic_start (w);	1283	break;
696
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	1284	}
699	}	1285	}
700	}	1286	}
701	}	1287	}
		1288	#endif
702		1289
703	static int	1290	int inline_size
704	time_update_monotonic (void)	1291	time_update_monotonic (EV_P)
705	{	1292	{
706	now = get_clock ();	1293	mn_now = get_clock ();
707		1294
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	1296	{
710	ev_now = now + diff;	1297	ev_rt_now = rtmn_diff + mn_now;
711	return 0;	1298	return 0;
712	}	1299	}
713	else	1300	else
714	{	1301	{
715	now_floor = now;	1302	now_floor = mn_now;
716	ev_now = ev_time ();	1303	ev_rt_now = ev_time ();
717	return 1;	1304	return 1;
718	}	1305	}
719	}	1306	}
720		1307
721	static void	1308	void inline_size
722	time_update (void)	1309	time_update (EV_P)
723	{	1310	{
724	int i;	1311	int i;
725		1312
726	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	1314	if (expect_true (have_monotonic))
728	{	1315	{
729	if (time_update_monotonic ())	1316	if (time_update_monotonic (EV_A))
730	{	1317	{
731	ev_tstamp odiff = diff;	1318	ev_tstamp odiff = rtmn_diff;
732		1319
733	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; )
734	{	1329	{
735	diff = ev_now - now;	1330	rtmn_diff = ev_rt_now - mn_now;
736		1331
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	1333	return; /* all is well */
739		1334
740	ev_now = ev_time ();	1335	ev_rt_now = ev_time ();
741	now = get_clock ();	1336	mn_now = get_clock ();
742	now_floor = now;	1337	now_floor = mn_now;
743	}	1338	}
744		1339
		1340	# if EV_PERIODIC_ENABLE
745	periodics_reschedule (diff - odiff);	1341	periodics_reschedule (EV_A);
		1342	# endif
746	/* 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) */
747	}	1345	}
748	}	1346	}
749	else	1347	else
750	#endif	1348	#endif
751	{	1349	{
752	ev_now = ev_time ();	1350	ev_rt_now = ev_time ();
753		1351
754	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))
755	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
756	periodics_reschedule (ev_now - now);	1355	periodics_reschedule (EV_A);
		1356	#endif
757		1357
758	/* 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 */
759	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
761	}	1361	}
762		1362
763	now = ev_now;	1363	mn_now = ev_rt_now;
764	}	1364	}
765	}	1365	}
766		1366
767	int ev_loop_done;	1367	void
		1368	ev_ref (EV_P)
		1369	{
		1370	++activecnt;
		1371	}
768		1372
		1373	void
		1374	ev_unref (EV_P)
		1375	{
		1376	--activecnt;
		1377	}
		1378
		1379	static int loop_done;
		1380
		1381	void
769	void ev_loop (int flags)	1382	ev_loop (EV_P_ int flags)
770	{	1383	{
771	double block;
772	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 */
773		1389
774	do	1390	do
775	{	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
776	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
778	{	1413	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	1415	call_pending (EV_A);
781	}	1416	}
782		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
783	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
784	fd_reify ();	1426	fd_reify (EV_A);
785		1427
786	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
787		1431
788	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
789	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 */
790	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
792	time_update_monotonic ();	1439	time_update_monotonic (EV_A);
793	else	1440	else
794	#endif	1441	#endif
795	{	1442	{
796	ev_now = ev_time ();	1443	ev_rt_now = ev_time ();
797	now = ev_now;	1444	mn_now = ev_rt_now;
798	}	1445	}
799		1446
800	if (flags & EVLOOP_NONBLOCK || idlecnt)
801	block = 0.;
802	else
803	{
804	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
805		1448
806	if (timercnt)	1449	if (timercnt)
807	{	1450	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
809	if (block > to) block = to;	1452	if (block > to) block = to;
810	}	1453	}
811		1454
		1455	#if EV_PERIODIC_ENABLE
812	if (periodiccnt)	1456	if (periodiccnt)
813	{	1457	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
815	if (block > to) block = to;	1459	if (block > to) block = to;
816	}	1460	}
		1461	#endif
817		1462
818	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
819	}	1464	}
820		1465
821	method_poll (block);	1466	++loop_count;
		1467	backend_poll (EV_A_ block);
		1468	}
822		1469
823	/* update ev_now, do magic */	1470	/* update ev_rt_now, do magic */
824	time_update ();	1471	time_update (EV_A);
825		1472
826	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
828	periodics_reify (); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
829		1478
		1479	#if EV_IDLE_ENABLE
830	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
831	if (!pendingcnt)	1481	idle_reify (EV_A);
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1482	#endif
833		1483
834	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
835	if (checkcnt)	1485	if (expect_false (checkcnt))
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1487
838	call_pending ();	1488	call_pending (EV_A);
839	}
840	while (!ev_loop_done);
841		1489
842	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	{
843	ev_loop_done = 0;	1500	loop_done = how;
844	}	1501	}
845		1502
846	/*****************************************************************************/	1503	/*****************************************************************************/
847		1504
848	static void	1505	void inline_size
849	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
850	{	1507	{
851	elem->next = *head;	1508	elem->next = *head;
852	*head = elem;	1509	*head = elem;
853	}	1510	}
854		1511
855	static void	1512	void inline_size
856	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
857	{	1514	{
858	while (*head)	1515	while (*head)
859	{	1516	{
860	if (*head == elem)	1517	if (*head == elem)
…		…
865		1522
866	head = &(*head)->next;	1523	head = &(*head)->next;
867	}	1524	}
868	}	1525	}
869		1526
870	static void	1527	void inline_speed
871	ev_clear_pending (W w)	1528	ev_clear_pending (EV_P_ W w)
872	{	1529	{
873	if (w->pending)	1530	if (w->pending)
874	{	1531	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1533	w->pending = 0;
877	}	1534	}
878	}	1535	}
879		1536
880	static void	1537	void inline_size
		1538	pri_adjust (EV_P_ W w)
		1539	{
		1540	int pri = w->priority;
		1541	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1542	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1543	w->priority = pri;
		1544	}
		1545
		1546	void inline_speed
881	ev_start (W w, int active)	1547	ev_start (EV_P_ W w, int active)
882	{	1548	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1549	pri_adjust (EV_A_ w);
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885
886	w->active = active;	1550	w->active = active;
		1551	ev_ref (EV_A);
887	}	1552	}
888		1553
889	static void	1554	void inline_size
890	ev_stop (W w)	1555	ev_stop (EV_P_ W w)
891	{	1556	{
		1557	ev_unref (EV_A);
892	w->active = 0;	1558	w->active = 0;
893	}	1559	}
894		1560
895	/*****************************************************************************/	1561	/*****************************************************************************/
896		1562
897	void	1563	void
898	ev_io_start (struct ev_io *w)	1564	ev_io_start (EV_P_ ev_io *w)
899	{	1565	{
900	int fd = w->fd;	1566	int fd = w->fd;
901		1567
902	if (ev_is_active (w))	1568	if (expect_false (ev_is_active (w)))
903	return;	1569	return;
904		1570
905	assert (("ev_io_start called with negative fd", fd >= 0));	1571	assert (("ev_io_start called with negative fd", fd >= 0));
906		1572
907	ev_start ((W)w, 1);	1573	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1574	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1575	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1576
911	fd_change (fd);	1577	fd_change (EV_A_ fd);
912	}	1578	}
913		1579
914	void	1580	void
915	ev_io_stop (struct ev_io *w)	1581	ev_io_stop (EV_P_ ev_io *w)
916	{	1582	{
917	ev_clear_pending ((W)w);	1583	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1584	if (expect_false (!ev_is_active (w)))
919	return;	1585	return;
		1586
		1587	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
920		1588
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1589	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1590	ev_stop (EV_A_ (W)w);
923		1591
924	fd_change (w->fd);	1592	fd_change (EV_A_ w->fd);
925	}	1593	}
926		1594
927	void	1595	void
928	ev_timer_start (struct ev_timer *w)	1596	ev_timer_start (EV_P_ ev_timer *w)
929	{	1597	{
930	if (ev_is_active (w))	1598	if (expect_false (ev_is_active (w)))
931	return;	1599	return;
932		1600
933	w->at += now;	1601	((WT)w)->at += mn_now;
934		1602
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1603	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1604
937	ev_start ((W)w, ++timercnt);	1605	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1606	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
939	timers [timercnt - 1] = w;	1607	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1608	upheap ((WT *)timers, timercnt - 1);
941	}
942		1609
		1610	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1611	}
		1612
943	void	1613	void
944	ev_timer_stop (struct ev_timer *w)	1614	ev_timer_stop (EV_P_ ev_timer *w)
945	{	1615	{
946	ev_clear_pending ((W)w);	1616	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
948	return;	1618	return;
949		1619
950	if (w->active < timercnt--)	1620	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1621
		1622	{
		1623	int active = ((W)w)->active;
		1624
		1625	if (expect_true (--active < --timercnt))
951	{	1626	{
952	timers [w->active - 1] = timers [timercnt];	1627	timers [active] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1628	adjustheap ((WT *)timers, timercnt, active);
954	}	1629	}
		1630	}
955		1631
956	w->at = w->repeat;	1632	((WT)w)->at -= mn_now;
957		1633
958	ev_stop ((W)w);	1634	ev_stop (EV_A_ (W)w);
959	}	1635	}
960		1636
961	void	1637	void
962	ev_timer_again (struct ev_timer *w)	1638	ev_timer_again (EV_P_ ev_timer *w)
963	{	1639	{
964	if (ev_is_active (w))	1640	if (ev_is_active (w))
965	{	1641	{
966	if (w->repeat)	1642	if (w->repeat)
967	{	1643	{
968	w->at = now + w->repeat;	1644	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1645	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1646	}
971	else	1647	else
972	ev_timer_stop (w);	1648	ev_timer_stop (EV_A_ w);
973	}	1649	}
974	else if (w->repeat)	1650	else if (w->repeat)
		1651	{
		1652	w->at = w->repeat;
975	ev_timer_start (w);	1653	ev_timer_start (EV_A_ w);
		1654	}
976	}	1655	}
977		1656
		1657	#if EV_PERIODIC_ENABLE
978	void	1658	void
979	ev_periodic_start (struct ev_periodic *w)	1659	ev_periodic_start (EV_P_ ev_periodic *w)
980	{	1660	{
981	if (ev_is_active (w))	1661	if (expect_false (ev_is_active (w)))
982	return;	1662	return;
983		1663
		1664	if (w->reschedule_cb)
		1665	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1666	else if (w->interval)
		1667	{
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1668	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1669	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1670	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1671	}
989		1672
990	ev_start ((W)w, ++periodiccnt);	1673	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1674	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
992	periodics [periodiccnt - 1] = w;	1675	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1676	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1677
		1678	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1679	}
		1680
996	void	1681	void
997	ev_periodic_stop (struct ev_periodic *w)	1682	ev_periodic_stop (EV_P_ ev_periodic *w)
998	{	1683	{
999	ev_clear_pending ((W)w);	1684	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1685	if (expect_false (!ev_is_active (w)))
1001	return;	1686	return;
1002		1687
1003	if (w->active < periodiccnt--)	1688	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1689
		1690	{
		1691	int active = ((W)w)->active;
		1692
		1693	if (expect_true (--active < --periodiccnt))
1004	{	1694	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1695	periodics [active] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1696	adjustheap ((WT *)periodics, periodiccnt, active);
1007	}	1697	}
		1698	}
1008		1699
1009	ev_stop ((W)w);	1700	ev_stop (EV_A_ (W)w);
1010	}	1701	}
1011		1702
1012	void	1703	void
		1704	ev_periodic_again (EV_P_ ev_periodic *w)
		1705	{
		1706	/* TODO: use adjustheap and recalculation */
		1707	ev_periodic_stop (EV_A_ w);
		1708	ev_periodic_start (EV_A_ w);
		1709	}
		1710	#endif
		1711
		1712	#ifndef SA_RESTART
		1713	# define SA_RESTART 0
		1714	#endif
		1715
		1716	void
1013	ev_signal_start (struct ev_signal *w)	1717	ev_signal_start (EV_P_ ev_signal *w)
1014	{	1718	{
		1719	#if EV_MULTIPLICITY
		1720	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1721	#endif
1015	if (ev_is_active (w))	1722	if (expect_false (ev_is_active (w)))
1016	return;	1723	return;
1017		1724
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1725	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1726
1020	ev_start ((W)w, 1);	1727	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1728	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1730
1024	if (!w->next)	1731	if (!((WL)w)->next)
1025	{	1732	{
		1733	#if _WIN32
		1734	signal (w->signum, sighandler);
		1735	#else
1026	struct sigaction sa;	1736	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1737	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1738	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1739	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1740	sigaction (w->signum, &sa, 0);
		1741	#endif
1031	}	1742	}
1032	}	1743	}
1033		1744
1034	void	1745	void
1035	ev_signal_stop (struct ev_signal *w)	1746	ev_signal_stop (EV_P_ ev_signal *w)
1036	{	1747	{
1037	ev_clear_pending ((W)w);	1748	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1749	if (expect_false (!ev_is_active (w)))
1039	return;	1750	return;
1040		1751
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1752	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1753	ev_stop (EV_A_ (W)w);
1043		1754
1044	if (!signals [w->signum - 1].head)	1755	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1756	signal (w->signum, SIG_DFL);
1046	}	1757	}
1047		1758
1048	void	1759	void
1049	ev_idle_start (struct ev_idle *w)	1760	ev_child_start (EV_P_ ev_child *w)
1050	{	1761	{
		1762	#if EV_MULTIPLICITY
		1763	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1764	#endif
1051	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1052	return;	1766	return;
1053		1767
1054	ev_start ((W)w, ++idlecnt);	1768	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1769	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1770	}
1058		1771
1059	void	1772	void
1060	ev_idle_stop (struct ev_idle *w)	1773	ev_child_stop (EV_P_ ev_child *w)
1061	{	1774	{
1062	ev_clear_pending ((W)w);	1775	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1064	return;	1777	return;
1065		1778
1066	idles [w->active - 1] = idles [--idlecnt];	1779	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1067	ev_stop ((W)w);	1780	ev_stop (EV_A_ (W)w);
1068	}	1781	}
1069		1782
		1783	#if EV_STAT_ENABLE
		1784
		1785	# ifdef _WIN32
		1786	# undef lstat
		1787	# define lstat(a,b) _stati64 (a,b)
		1788	# endif
		1789
		1790	#define DEF_STAT_INTERVAL 5.0074891
		1791	#define MIN_STAT_INTERVAL 0.1074891
		1792
		1793	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1794
		1795	#if EV_USE_INOTIFY
		1796	# define EV_INOTIFY_BUFSIZE 8192
		1797
		1798	static void noinline
		1799	infy_add (EV_P_ ev_stat *w)
		1800	{
		1801	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);
		1802
		1803	if (w->wd < 0)
		1804	{
		1805	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1806
		1807	/* monitor some parent directory for speedup hints */
		1808	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1809	{
		1810	char path [4096];
		1811	strcpy (path, w->path);
		1812
		1813	do
		1814	{
		1815	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1816	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1817
		1818	char *pend = strrchr (path, '/');
		1819
		1820	if (!pend)
		1821	break; /* whoops, no '/', complain to your admin */
		1822
		1823	*pend = 0;
		1824	w->wd = inotify_add_watch (fs_fd, path, mask);
		1825	}
		1826	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1827	}
		1828	}
		1829	else
		1830	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1831
		1832	if (w->wd >= 0)
		1833	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1834	}
		1835
		1836	static void noinline
		1837	infy_del (EV_P_ ev_stat *w)
		1838	{
		1839	int slot;
		1840	int wd = w->wd;
		1841
		1842	if (wd < 0)
		1843	return;
		1844
		1845	w->wd = -2;
		1846	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1847	wlist_del (&fs_hash [slot].head, (WL)w);
		1848
		1849	/* remove this watcher, if others are watching it, they will rearm */
		1850	inotify_rm_watch (fs_fd, wd);
		1851	}
		1852
		1853	static void noinline
		1854	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1855	{
		1856	if (slot < 0)
		1857	/* overflow, need to check for all hahs slots */
		1858	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1859	infy_wd (EV_A_ slot, wd, ev);
		1860	else
		1861	{
		1862	WL w_;
		1863
		1864	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1865	{
		1866	ev_stat *w = (ev_stat *)w_;
		1867	w_ = w_->next; /* lets us remove this watcher and all before it */
		1868
		1869	if (w->wd == wd || wd == -1)
		1870	{
		1871	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1872	{
		1873	w->wd = -1;
		1874	infy_add (EV_A_ w); /* re-add, no matter what */
		1875	}
		1876
		1877	stat_timer_cb (EV_A_ &w->timer, 0);
		1878	}
		1879	}
		1880	}
		1881	}
		1882
		1883	static void
		1884	infy_cb (EV_P_ ev_io *w, int revents)
		1885	{
		1886	char buf [EV_INOTIFY_BUFSIZE];
		1887	struct inotify_event *ev = (struct inotify_event *)buf;
		1888	int ofs;
		1889	int len = read (fs_fd, buf, sizeof (buf));
		1890
		1891	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1892	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1893	}
		1894
		1895	void inline_size
		1896	infy_init (EV_P)
		1897	{
		1898	if (fs_fd != -2)
		1899	return;
		1900
		1901	fs_fd = inotify_init ();
		1902
		1903	if (fs_fd >= 0)
		1904	{
		1905	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1906	ev_set_priority (&fs_w, EV_MAXPRI);
		1907	ev_io_start (EV_A_ &fs_w);
		1908	}
		1909	}
		1910
		1911	void inline_size
		1912	infy_fork (EV_P)
		1913	{
		1914	int slot;
		1915
		1916	if (fs_fd < 0)
		1917	return;
		1918
		1919	close (fs_fd);
		1920	fs_fd = inotify_init ();
		1921
		1922	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1923	{
		1924	WL w_ = fs_hash [slot].head;
		1925	fs_hash [slot].head = 0;
		1926
		1927	while (w_)
		1928	{
		1929	ev_stat *w = (ev_stat *)w_;
		1930	w_ = w_->next; /* lets us add this watcher */
		1931
		1932	w->wd = -1;
		1933
		1934	if (fs_fd >= 0)
		1935	infy_add (EV_A_ w); /* re-add, no matter what */
		1936	else
		1937	ev_timer_start (EV_A_ &w->timer);
		1938	}
		1939
		1940	}
		1941	}
		1942
		1943	#endif
		1944
1070	void	1945	void
		1946	ev_stat_stat (EV_P_ ev_stat *w)
		1947	{
		1948	if (lstat (w->path, &w->attr) < 0)
		1949	w->attr.st_nlink = 0;
		1950	else if (!w->attr.st_nlink)
		1951	w->attr.st_nlink = 1;
		1952	}
		1953
		1954	static void noinline
		1955	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1956	{
		1957	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1958
		1959	/* we copy this here each the time so that */
		1960	/* prev has the old value when the callback gets invoked */
		1961	w->prev = w->attr;
		1962	ev_stat_stat (EV_A_ w);
		1963
		1964	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1965	if (
		1966	w->prev.st_dev != w->attr.st_dev
		1967	|| w->prev.st_ino != w->attr.st_ino
		1968	|| w->prev.st_mode != w->attr.st_mode
		1969	|| w->prev.st_nlink != w->attr.st_nlink
		1970	|| w->prev.st_uid != w->attr.st_uid
		1971	|| w->prev.st_gid != w->attr.st_gid
		1972	|| w->prev.st_rdev != w->attr.st_rdev
		1973	|| w->prev.st_size != w->attr.st_size
		1974	|| w->prev.st_atime != w->attr.st_atime
		1975	|| w->prev.st_mtime != w->attr.st_mtime
		1976	|| w->prev.st_ctime != w->attr.st_ctime
		1977	) {
		1978	#if EV_USE_INOTIFY
		1979	infy_del (EV_A_ w);
		1980	infy_add (EV_A_ w);
		1981	ev_stat_stat (EV_A_ w); /* avoid race... */
		1982	#endif
		1983
		1984	ev_feed_event (EV_A_ w, EV_STAT);
		1985	}
		1986	}
		1987
		1988	void
		1989	ev_stat_start (EV_P_ ev_stat *w)
		1990	{
		1991	if (expect_false (ev_is_active (w)))
		1992	return;
		1993
		1994	/* since we use memcmp, we need to clear any padding data etc. */
		1995	memset (&w->prev, 0, sizeof (ev_statdata));
		1996	memset (&w->attr, 0, sizeof (ev_statdata));
		1997
		1998	ev_stat_stat (EV_A_ w);
		1999
		2000	if (w->interval < MIN_STAT_INTERVAL)
		2001	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2002
		2003	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2004	ev_set_priority (&w->timer, ev_priority (w));
		2005
		2006	#if EV_USE_INOTIFY
		2007	infy_init (EV_A);
		2008
		2009	if (fs_fd >= 0)
		2010	infy_add (EV_A_ w);
		2011	else
		2012	#endif
		2013	ev_timer_start (EV_A_ &w->timer);
		2014
		2015	ev_start (EV_A_ (W)w, 1);
		2016	}
		2017
		2018	void
		2019	ev_stat_stop (EV_P_ ev_stat *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	#if EV_USE_INOTIFY
		2026	infy_del (EV_A_ w);
		2027	#endif
		2028	ev_timer_stop (EV_A_ &w->timer);
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032	#endif
		2033
		2034	#if EV_IDLE_ENABLE
		2035	void
		2036	ev_idle_start (EV_P_ ev_idle *w)
		2037	{
		2038	if (expect_false (ev_is_active (w)))
		2039	return;
		2040
		2041	pri_adjust (EV_A_ (W)w);
		2042
		2043	{
		2044	int active = ++idlecnt [ABSPRI (w)];
		2045
		2046	++idleall;
		2047	ev_start (EV_A_ (W)w, active);
		2048
		2049	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2050	idles [ABSPRI (w)][active - 1] = w;
		2051	}
		2052	}
		2053
		2054	void
		2055	ev_idle_stop (EV_P_ ev_idle *w)
		2056	{
		2057	ev_clear_pending (EV_A_ (W)w);
		2058	if (expect_false (!ev_is_active (w)))
		2059	return;
		2060
		2061	{
		2062	int active = ((W)w)->active;
		2063
		2064	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2065	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	--idleall;
		2069	}
		2070	}
		2071	#endif
		2072
		2073	void
1071	ev_prepare_start (struct ev_prepare *w)	2074	ev_prepare_start (EV_P_ ev_prepare *w)
1072	{	2075	{
1073	if (ev_is_active (w))	2076	if (expect_false (ev_is_active (w)))
1074	return;	2077	return;
1075		2078
1076	ev_start ((W)w, ++preparecnt);	2079	ev_start (EV_A_ (W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );	2080	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1078	prepares [preparecnt - 1] = w;	2081	prepares [preparecnt - 1] = w;
1079	}	2082	}
1080		2083
1081	void	2084	void
1082	ev_prepare_stop (struct ev_prepare *w)	2085	ev_prepare_stop (EV_P_ ev_prepare *w)
1083	{	2086	{
1084	ev_clear_pending ((W)w);	2087	ev_clear_pending (EV_A_ (W)w);
1085	if (ev_is_active (w))	2088	if (expect_false (!ev_is_active (w)))
1086	return;	2089	return;
1087		2090
		2091	{
		2092	int active = ((W)w)->active;
1088	prepares [w->active - 1] = prepares [--preparecnt];	2093	prepares [active - 1] = prepares [--preparecnt];
		2094	((W)prepares [active - 1])->active = active;
		2095	}
		2096
1089	ev_stop ((W)w);	2097	ev_stop (EV_A_ (W)w);
1090	}	2098	}
1091		2099
1092	void	2100	void
1093	ev_check_start (struct ev_check *w)	2101	ev_check_start (EV_P_ ev_check *w)
1094	{	2102	{
1095	if (ev_is_active (w))	2103	if (expect_false (ev_is_active (w)))
1096	return;	2104	return;
1097		2105
1098	ev_start ((W)w, ++checkcnt);	2106	ev_start (EV_A_ (W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );	2107	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1100	checks [checkcnt - 1] = w;	2108	checks [checkcnt - 1] = w;
1101	}	2109	}
1102		2110
1103	void	2111	void
1104	ev_check_stop (struct ev_check *w)	2112	ev_check_stop (EV_P_ ev_check *w)
1105	{	2113	{
1106	ev_clear_pending ((W)w);	2114	ev_clear_pending (EV_A_ (W)w);
1107	if (ev_is_active (w))	2115	if (expect_false (!ev_is_active (w)))
1108	return;	2116	return;
1109		2117
		2118	{
		2119	int active = ((W)w)->active;
1110	checks [w->active - 1] = checks [--checkcnt];	2120	checks [active - 1] = checks [--checkcnt];
		2121	((W)checks [active - 1])->active = active;
		2122	}
		2123
1111	ev_stop ((W)w);	2124	ev_stop (EV_A_ (W)w);
1112	}	2125	}
1113		2126
1114	void	2127	#if EV_EMBED_ENABLE
1115	ev_child_start (struct ev_child *w)	2128	void noinline
		2129	ev_embed_sweep (EV_P_ ev_embed *w)
1116	{	2130	{
		2131	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2132	}
		2133
		2134	static void
		2135	embed_cb (EV_P_ ev_io *io, int revents)
		2136	{
		2137	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2138
1117	if (ev_is_active (w))	2139	if (ev_cb (w))
1118	return;	2140	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2141	else
		2142	ev_embed_sweep (loop, w);
		2143	}
1119		2144
		2145	void
		2146	ev_embed_start (EV_P_ ev_embed *w)
		2147	{
		2148	if (expect_false (ev_is_active (w)))
		2149	return;
		2150
		2151	{
		2152	struct ev_loop *loop = w->loop;
		2153	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2154	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2155	}
		2156
		2157	ev_set_priority (&w->io, ev_priority (w));
		2158	ev_io_start (EV_A_ &w->io);
		2159
1120	ev_start ((W)w, 1);	2160	ev_start (EV_A_ (W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}	2161	}
1123		2162
1124	void	2163	void
1125	ev_child_stop (struct ev_child *w)	2164	ev_embed_stop (EV_P_ ev_embed *w)
1126	{	2165	{
1127	ev_clear_pending ((W)w);	2166	ev_clear_pending (EV_A_ (W)w);
1128	if (ev_is_active (w))	2167	if (expect_false (!ev_is_active (w)))
1129	return;	2168	return;
1130		2169
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2170	ev_io_stop (EV_A_ &w->io);
		2171
1132	ev_stop ((W)w);	2172	ev_stop (EV_A_ (W)w);
1133	}	2173	}
		2174	#endif
		2175
		2176	#if EV_FORK_ENABLE
		2177	void
		2178	ev_fork_start (EV_P_ ev_fork *w)
		2179	{
		2180	if (expect_false (ev_is_active (w)))
		2181	return;
		2182
		2183	ev_start (EV_A_ (W)w, ++forkcnt);
		2184	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2185	forks [forkcnt - 1] = w;
		2186	}
		2187
		2188	void
		2189	ev_fork_stop (EV_P_ ev_fork *w)
		2190	{
		2191	ev_clear_pending (EV_A_ (W)w);
		2192	if (expect_false (!ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	int active = ((W)w)->active;
		2197	forks [active - 1] = forks [--forkcnt];
		2198	((W)forks [active - 1])->active = active;
		2199	}
		2200
		2201	ev_stop (EV_A_ (W)w);
		2202	}
		2203	#endif
1134		2204
1135	/*****************************************************************************/	2205	/*****************************************************************************/
1136		2206
1137	struct ev_once	2207	struct ev_once
1138	{	2208	{
1139	struct ev_io io;	2209	ev_io io;
1140	struct ev_timer to;	2210	ev_timer to;
1141	void (*cb)(int revents, void *arg);	2211	void (*cb)(int revents, void *arg);
1142	void *arg;	2212	void *arg;
1143	};	2213	};
1144		2214
1145	static void	2215	static void
1146	once_cb (struct ev_once *once, int revents)	2216	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	2217	{
1148	void (*cb)(int revents, void *arg) = once->cb;	2218	void (*cb)(int revents, void *arg) = once->cb;
1149	void *arg = once->arg;	2219	void *arg = once->arg;
1150		2220
1151	ev_io_stop (&once->io);	2221	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	2222	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	2223	ev_free (once);
1154		2224
1155	cb (revents, arg);	2225	cb (revents, arg);
1156	}	2226	}
1157		2227
1158	static void	2228	static void
1159	once_cb_io (struct ev_io *w, int revents)	2229	once_cb_io (EV_P_ ev_io *w, int revents)
1160	{	2230	{
1161	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2231	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1162	}	2232	}
1163		2233
1164	static void	2234	static void
1165	once_cb_to (struct ev_timer *w, int revents)	2235	once_cb_to (EV_P_ ev_timer *w, int revents)
1166	{	2236	{
1167	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2237	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1168	}	2238	}
1169		2239
1170	void	2240	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2241	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1172	{	2242	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	2243	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1174		2244
1175	if (!once)	2245	if (expect_false (!once))
		2246	{
1176	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2247	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1177	else	2248	return;
1178	{	2249	}
		2250
1179	once->cb = cb;	2251	once->cb = cb;
1180	once->arg = arg;	2252	once->arg = arg;
1181		2253
1182	ev_watcher_init (&once->io, once_cb_io);	2254	ev_init (&once->io, once_cb_io);
1183	if (fd >= 0)	2255	if (fd >= 0)
1184	{	2256	{
1185	ev_io_set (&once->io, fd, events);	2257	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	2258	ev_io_start (EV_A_ &once->io);
1187	}	2259	}
1188		2260
1189	ev_watcher_init (&once->to, once_cb_to);	2261	ev_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	2262	if (timeout >= 0.)
1191	{	2263	{
1192	ev_timer_set (&once->to, timeout, 0.);	2264	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	2265	ev_timer_start (EV_A_ &once->to);
1194	}
1195	}
1196	}
1197
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{	2266	}
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}	2267	}
1275		2268
		2269	#ifdef __cplusplus
		2270	}
1276	#endif	2271	#endif
1277		2272
1278
1279
1280

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