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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.161 by root, Sat Dec 1 23:43:45 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)->priority - EV_MINPRI)
113		247
		248	#define EMPTY0 /* 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
		393	#if EV_MULTIPLICITY
		394	ev_tstamp
		395	ev_now (EV_P)
		396	{
		397	return ev_rt_now;
		398	}
		399	#endif
		400
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		402
161	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
163	{ \	405	{ \
164	int newcnt = cur; \	406	int newcnt = cur; \
165	do \	407	do \
166	{ \	408	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	410	} \
169	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
170	\	412	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	415	cur = newcnt; \
174	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		428
176	/*****************************************************************************/	429	/*****************************************************************************/
177		430
178	typedef struct	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
179	{	433	{
180	struct ev_io *head;	434	W w_ = (W)w;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184		435
185	static ANFD *anfds;	436	if (expect_false (w_->pending))
186	static int anfdmax;	437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
187		441
188	static void	442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
189	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
190	{	461	{
191	while (count--)	462	while (count--)
192	{	463	{
193	base->head = 0;	464	base->head = 0;
…		…
196		467
197	++base;	468	++base;
198	}	469	}
199	}	470	}
200		471
201	typedef struct	472	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)	473	fd_event (EV_P_ int fd, int revents)
236	{	474	{
237	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	476	ev_io *w;
239		477
240	for (w = anfd->head; w; w = w->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
241	{	479	{
242	int ev = w->events & events;	480	int ev = w->events & revents;
243		481
244	if (ev)	482	if (ev)
245	event ((W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
246	}	484	}
247	}	485	}
248		486
249	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
250		492
251	static int *fdchanges;	493	void inline_size
252	static int fdchangemax, fdchangecnt;	494	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	495	{
257	int i;	496	int i;
258		497
259	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
260	{	499	{
261	int fd = fdchanges [i];	500	int fd = fdchanges [i];
262	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	502	ev_io *w;
264		503
265	int events = 0;	504	int events = 0;
266		505
267	for (w = anfd->head; w; w = w->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
268	events |= w->events;	507	events |= w->events;
269		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
270	anfd->reify = 0;	518	anfd->reify = 0;
271		519
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	521	anfd->events = events;
276	}
277	}	522	}
278		523
279	fdchangecnt = 0;	524	fdchangecnt = 0;
280	}	525	}
281		526
282	static void	527	void inline_size
283	fd_change (int fd)	528	fd_change (EV_P_ int fd)
284	{	529	{
285	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
286	return;	531	return;
287		532
288	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
289		534
290	++fdchangecnt;	535	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
293	}	538	}
294		539
295	static void	540	void inline_speed
296	fd_kill (int fd)	541	fd_kill (EV_P_ int fd)
297	{	542	{
298	struct ev_io *w;	543	ev_io *w;
299		544
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
302	{	546	{
303	ev_io_stop (w);	547	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
306	}	560	}
307		561
308	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
309	static void	563	static void noinline
310	fd_ebadf (void)	564	fd_ebadf (EV_P)
311	{	565	{
312	int fd;	566	int fd;
313		567
314	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	569	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	571	fd_kill (EV_A_ fd);
318	}	572	}
319		573
320	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	575	static void noinline
322	fd_enomem (void)	576	fd_enomem (EV_P)
323	{	577	{
324	int fd = anfdmax;	578	int fd;
325		579
326	while (fd--)	580	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	581	if (anfds [fd].events)
328	{	582	{
329	close (fd);
330	fd_kill (fd);	583	fd_kill (EV_A_ fd);
331	return;	584	return;
332	}	585	}
333	}	586	}
334		587
		588	/* usually called after fork if backend needs to re-arm all fds from scratch */
		589	static void noinline
		590	fd_rearm_all (EV_P)
		591	{
		592	int fd;
		593
		594	for (fd = 0; fd < anfdmax; ++fd)
		595	if (anfds [fd].events)
		596	{
		597	anfds [fd].events = 0;
		598	fd_change (EV_A_ fd);
		599	}
		600	}
		601
335	/*****************************************************************************/	602	/*****************************************************************************/
336		603
337	static struct ev_timer **timers;	604	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)	605	upheap (WT *heap, int k)
345	{	606	{
346	WT w = timers [k];	607	WT w = heap [k];
347		608
348	while (k && timers [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
349	{	610	{
350	timers [k] = timers [k >> 1];	611	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	612	((W)heap [k])->active = k + 1;
352	k >>= 1;	613	k >>= 1;
353	}	614	}
354		615
355	timers [k] = w;	616	heap [k] = w;
356	timers [k]->active = k + 1;	617	((W)heap [k])->active = k + 1;
357		618
358	}	619	}
359		620
360	static void	621	void inline_speed
361	downheap (WT *timers, int N, int k)	622	downheap (WT *heap, int N, int k)
362	{	623	{
363	WT w = timers [k];	624	WT w = heap [k];
364		625
365	while (k < (N >> 1))	626	while (k < (N >> 1))
366	{	627	{
367	int j = k << 1;	628	int j = k << 1;
368		629
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	631	++j;
371		632
372	if (w->at <= timers [j]->at)	633	if (w->at <= heap [j]->at)
373	break;	634	break;
374		635
375	timers [k] = timers [j];	636	heap [k] = heap [j];
376	timers [k]->active = k + 1;	637	((W)heap [k])->active = k + 1;
377	k = j;	638	k = j;
378	}	639	}
379		640
380	timers [k] = w;	641	heap [k] = w;
381	timers [k]->active = k + 1;	642	((W)heap [k])->active = k + 1;
		643	}
		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
382	}	650	}
383		651
384	/*****************************************************************************/	652	/*****************************************************************************/
385		653
386	typedef struct	654	typedef struct
387	{	655	{
388	struct ev_signal *head;	656	WL head;
389	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
390	} ANSIG;	658	} ANSIG;
391		659
392	static ANSIG *signals;	660	static ANSIG *signals;
393	static int signalmax;	661	static int signalmax;
394		662
395	static int sigpipe [2];	663	static int sigpipe [2];
396	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
397	static struct ev_io sigev;	665	static ev_io sigev;
398		666
399	static void	667	void inline_size
400	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
401	{	669	{
402	while (count--)	670	while (count--)
403	{	671	{
404	base->head = 0;	672	base->head = 0;
…		…
409	}	677	}
410		678
411	static void	679	static void
412	sighandler (int signum)	680	sighandler (int signum)
413	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
414	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
415		687
416	if (!gotsig)	688	if (!gotsig)
417	{	689	{
418	int old_errno = errno;	690	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	693	errno = old_errno;
422	}	694	}
423	}	695	}
424		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
425	static void	717	static void
426	sigcb (struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
427	{	719	{
428	struct ev_signal *w;
429	int signum;	720	int signum;
430		721
431	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	723	gotsig = 0;
433		724
434	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
		727	ev_feed_signal_event (EV_A_ signum + 1);
		728	}
		729
		730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
		743	siginit (EV_P)
		744	{
		745	fd_intern (sigpipe [0]);
		746	fd_intern (sigpipe [1]);
		747
		748	ev_io_set (&sigev, sigpipe [0], EV_READ);
		749	ev_io_start (EV_A_ &sigev);
		750	ev_unref (EV_A); /* child watcher should not keep loop alive */
		751	}
		752
		753	/*****************************************************************************/
		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
		757	#ifndef _WIN32
		758
		759	static ev_signal childev;
		760
		761	void inline_speed
		762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		763	{
		764	ev_child *w;
		765
		766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		767	if (w->pid == pid || !w->pid)
436	{	768	{
437	signals [signum].gotsig = 0;	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
438		770	w->rpid = pid;
439	for (w = signals [signum].head; w; w = w->next)	771	w->rstatus = status;
440	event ((W)w, EV_SIGNAL);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
441	}	773	}
442	}	774	}
443
444	static void
445	siginit (void)
446	{
447	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450
451	/* rather than sort out wether we really need nb, set it */
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif
455
456	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);
458	}
459
460	/*****************************************************************************/
461
462	static struct ev_idle **idles;
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472
473	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;
475
476	#ifndef WIN32
477		775
478	#ifndef WCONTINUED	776	#ifndef WCONTINUED
479	# define WCONTINUED 0	777	# define WCONTINUED 0
480	#endif	778	#endif
481		779
482	static void	780	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)
484	{
485	struct ev_child *w;
486
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)
488	if (w->pid == pid || !w->pid)
489	{
490	w->priority = sw->priority; /* need to do it *now* */
491	w->rpid = pid;
492	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);
495	}
496	}
497
498	static void
499	childcb (struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
500	{	782	{
501	int pid, status;	783	int pid, status;
502		784
503	printf ("chld %x\n", revents);//D	785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
506	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
507	event ((W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		795
509	child_reap (sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
511	}
512	}	799	}
513		800
514	#endif	801	#endif
515		802
516	/*****************************************************************************/	803	/*****************************************************************************/
517		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
518	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
520	#endif	810	#endif
521	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
538	ev_version_minor (void)	828	ev_version_minor (void)
539	{	829	{
540	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
541	}	831	}
542		832
543	/* return true if we are running with elevated privileges and ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	834	int inline_size
545	enable_secure ()	835	enable_secure (void)
546	{	836	{
		837	#ifdef _WIN32
		838	return 0;
		839	#else
547	return getuid () != geteuid ()	840	return getuid () != geteuid ()
548	|| getgid () != getegid ();	841	|| getgid () != getegid ();
		842	#endif
549	}	843	}
550		844
551	int ev_init (int methods)	845	unsigned int
		846	ev_supported_backends (void)
552	{	847	{
553	if (!ev_method)	848	unsigned int flags = 0;
		849
		850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
		861	{
		862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
554	{	895	{
555	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
556	{	897	{
557	struct timespec ts;	898	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	900	have_monotonic = 1;
560	}	901	}
561	#endif	902	#endif
562		903
563	ev_now = ev_time ();	904	ev_rt_now = ev_time ();
564	now = get_clock ();	905	mn_now = get_clock ();
565	now_floor = now;	906	now_floor = mn_now;
566	diff = ev_now - now;	907	rtmn_diff = ev_rt_now - mn_now;
567		908
568	if (pipe (sigpipe))	909	/* pid check not overridable via env */
569	return 0;	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
570		914
571	if (methods == EVMETHOD_AUTO)	915	if (!(flags & EVFLAG_NOENV)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))	916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
574	else
575	methods = EVMETHOD_ANY;
576		919
577	ev_method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
		925	#if EV_USE_INOTIFY
		926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		931	#endif
578	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
580	#endif	934	#endif
581	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
583	#endif	937	#endif
584	#if EV_USE_POLL	938	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
586	#endif	940	#endif
587	#if EV_USE_SELECT	941	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
589	#endif	943	#endif
590		944
591	if (ev_method)	945	ev_init (&sigev, sigcb);
		946	ev_set_priority (&sigev, EV_MAXPRI);
		947	}
		948	}
		949
		950	static void noinline
		951	loop_destroy (EV_P)
		952	{
		953	int i;
		954
		955	#if EV_USE_INOTIFY
		956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		965	#endif
		966	#if EV_USE_KQUEUE
		967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		968	#endif
		969	#if EV_USE_EPOLL
		970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		971	#endif
		972	#if EV_USE_POLL
		973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		974	#endif
		975	#if EV_USE_SELECT
		976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		977	#endif
		978
		979	for (i = NUMPRI; i--; )
		980	array_free (pending, [i]);
		981
		982	/* have to use the microsoft-never-gets-it-right macro */
		983	array_free (fdchange, EMPTY0);
		984	array_free (timer, EMPTY0);
		985	#if EV_PERIODIC_ENABLE
		986	array_free (periodic, EMPTY0);
		987	#endif
		988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
		991
		992	backend = 0;
		993	}
		994
		995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
		998	loop_fork (EV_P)
		999	{
		1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
		1006	#if EV_USE_EPOLL
		1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1008	#endif
		1009	#if EV_USE_INOTIFY
		1010	infy_fork (EV_A);
		1011	#endif
		1012
		1013	if (ev_is_active (&sigev))
		1014	{
		1015	/* default loop */
		1016
		1017	ev_ref (EV_A);
		1018	ev_io_stop (EV_A_ &sigev);
		1019	close (sigpipe [0]);
		1020	close (sigpipe [1]);
		1021
		1022	while (pipe (sigpipe))
		1023	syserr ("(libev) error creating pipe");
		1024
		1025	siginit (EV_A);
		1026	}
		1027
		1028	postfork = 0;
		1029	}
		1030
		1031	#if EV_MULTIPLICITY
		1032	struct ev_loop *
		1033	ev_loop_new (unsigned int flags)
		1034	{
		1035	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1036
		1037	memset (loop, 0, sizeof (struct ev_loop));
		1038
		1039	loop_init (EV_A_ flags);
		1040
		1041	if (ev_backend (EV_A))
		1042	return loop;
		1043
		1044	return 0;
		1045	}
		1046
		1047	void
		1048	ev_loop_destroy (EV_P)
		1049	{
		1050	loop_destroy (EV_A);
		1051	ev_free (loop);
		1052	}
		1053
		1054	void
		1055	ev_loop_fork (EV_P)
		1056	{
		1057	postfork = 1;
		1058	}
		1059
		1060	#endif
		1061
		1062	#if EV_MULTIPLICITY
		1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
		1065	#else
		1066	int
		1067	ev_default_loop (unsigned int flags)
		1068	#endif
		1069	{
		1070	if (sigpipe [0] == sigpipe [1])
		1071	if (pipe (sigpipe))
		1072	return 0;
		1073
		1074	if (!ev_default_loop_ptr)
		1075	{
		1076	#if EV_MULTIPLICITY
		1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1078	#else
		1079	ev_default_loop_ptr = 1;
		1080	#endif
		1081
		1082	loop_init (EV_A_ flags);
		1083
		1084	if (ev_backend (EV_A))
592	{	1085	{
593	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	1086	siginit (EV_A);
596		1087
597	#ifndef WIN32	1088	#ifndef _WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	1091	ev_signal_start (EV_A_ &childev);
		1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	1093	#endif
602	}	1094	}
		1095	else
		1096	ev_default_loop_ptr = 0;
603	}	1097	}
604		1098
605	return ev_method;	1099	return ev_default_loop_ptr;
		1100	}
		1101
		1102	void
		1103	ev_default_destroy (void)
		1104	{
		1105	#if EV_MULTIPLICITY
		1106	struct ev_loop *loop = ev_default_loop_ptr;
		1107	#endif
		1108
		1109	#ifndef _WIN32
		1110	ev_ref (EV_A); /* child watcher */
		1111	ev_signal_stop (EV_A_ &childev);
		1112	#endif
		1113
		1114	ev_ref (EV_A); /* signal watcher */
		1115	ev_io_stop (EV_A_ &sigev);
		1116
		1117	close (sigpipe [0]); sigpipe [0] = 0;
		1118	close (sigpipe [1]); sigpipe [1] = 0;
		1119
		1120	loop_destroy (EV_A);
		1121	}
		1122
		1123	void
		1124	ev_default_fork (void)
		1125	{
		1126	#if EV_MULTIPLICITY
		1127	struct ev_loop *loop = ev_default_loop_ptr;
		1128	#endif
		1129
		1130	if (backend)
		1131	postfork = 1;
606	}	1132	}
607		1133
608	/*****************************************************************************/	1134	/*****************************************************************************/
609		1135
610	void	1136	int inline_size
611	ev_fork_prepare (void)	1137	any_pending (EV_P)
612	{	1138	{
613	/* nop */	1139	int pri;
614	}
615		1140
616	void	1141	for (pri = NUMPRI; pri--; )
617	ev_fork_parent (void)	1142	if (pendingcnt [pri])
618	{	1143	return 1;
619	/* nop */
620	}
621		1144
622	void	1145	return 0;
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif
629
630	ev_io_stop (&sigev);
631	close (sigpipe [0]);
632	close (sigpipe [1]);
633	pipe (sigpipe);
634	siginit ();
635	}	1146	}
636		1147
637	/*****************************************************************************/	1148	void inline_speed
638
639	static void
640	call_pending (void)	1149	call_pending (EV_P)
641	{	1150	{
642	int pri;	1151	int pri;
643		1152
644	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
646	{	1155	{
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		1157
649	if (p->w)	1158	if (expect_true (p->w))
650	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
651	p->w->pending = 0;	1162	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
653	}	1164	}
654	}	1165	}
655	}	1166	}
656		1167
657	static void	1168	void inline_size
658	timers_reify (void)	1169	timers_reify (EV_P)
659	{	1170	{
660	while (timercnt && timers [0]->at <= now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	1172	{
662	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
		1174
		1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
663		1176
664	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
665	if (w->repeat)	1178	if (w->repeat)
666	{	1179	{
667	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
668	w->at = now + w->repeat;	1182	((WT)w)->at += w->repeat;
		1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
669	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
670	}	1187	}
671	else	1188	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1190
674	event ((W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
675	}	1192	}
676	}	1193	}
677		1194
678	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
679	periodics_reify (void)	1197	periodics_reify (EV_P)
680	{	1198	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
682	{	1200	{
683	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
		1202
		1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
684		1204
685	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
686	if (w->interval)	1206	if (w->reschedule_cb)
687	{	1207	{
		1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1210	downheap ((WT *)periodics, periodiccnt, 0);
		1211	}
		1212	else if (w->interval)
		1213	{
688	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
689	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
690	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
691	}	1217	}
692	else	1218	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		1220
695	event ((W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
696	}	1222	}
697	}	1223	}
698		1224
699	static void	1225	static void noinline
700	periodics_reschedule (ev_tstamp diff)	1226	periodics_reschedule (EV_P)
701	{	1227	{
702	int i;	1228	int i;
703		1229
704	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
706	{	1232	{
707	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
708		1234
		1235	if (w->reschedule_cb)
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
709	if (w->interval)	1237	else if (w->interval)
710	{
711	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
712
713	if (fabs (diff) >= 1e-4)
714	{
715	ev_periodic_stop (w);
716	ev_periodic_start (w);
717
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}
720	}
721	}	1239	}
722	}
723		1240
724	static int	1241	/* now rebuild the heap */
		1242	for (i = periodiccnt >> 1; i--; )
		1243	downheap ((WT *)periodics, periodiccnt, i);
		1244	}
		1245	#endif
		1246
		1247	int inline_size
725	time_update_monotonic (void)	1248	time_update_monotonic (EV_P)
726	{	1249	{
727	now = get_clock ();	1250	mn_now = get_clock ();
728		1251
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	1253	{
731	ev_now = now + diff;	1254	ev_rt_now = rtmn_diff + mn_now;
732	return 0;	1255	return 0;
733	}	1256	}
734	else	1257	else
735	{	1258	{
736	now_floor = now;	1259	now_floor = mn_now;
737	ev_now = ev_time ();	1260	ev_rt_now = ev_time ();
738	return 1;	1261	return 1;
739	}	1262	}
740	}	1263	}
741		1264
742	static void	1265	void inline_size
743	time_update (void)	1266	time_update (EV_P)
744	{	1267	{
745	int i;	1268	int i;
746		1269
747	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	1271	if (expect_true (have_monotonic))
749	{	1272	{
750	if (time_update_monotonic ())	1273	if (time_update_monotonic (EV_A))
751	{	1274	{
752	ev_tstamp odiff = diff;	1275	ev_tstamp odiff = rtmn_diff;
753		1276
754	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
755	{	1286	{
756	diff = ev_now - now;	1287	rtmn_diff = ev_rt_now - mn_now;
757		1288
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	1290	return; /* all is well */
760		1291
761	ev_now = ev_time ();	1292	ev_rt_now = ev_time ();
762	now = get_clock ();	1293	mn_now = get_clock ();
763	now_floor = now;	1294	now_floor = mn_now;
764	}	1295	}
765		1296
		1297	# if EV_PERIODIC_ENABLE
766	periodics_reschedule (diff - odiff);	1298	periodics_reschedule (EV_A);
		1299	# endif
767	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
		1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
768	}	1302	}
769	}	1303	}
770	else	1304	else
771	#endif	1305	#endif
772	{	1306	{
773	ev_now = ev_time ();	1307	ev_rt_now = ev_time ();
774		1308
775	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
776	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
777	periodics_reschedule (ev_now - now);	1312	periodics_reschedule (EV_A);
		1313	#endif
778		1314
779	/* adjust timers. this is easy, as the offset is the same for all */	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
780	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
782	}	1318	}
783		1319
784	now = ev_now;	1320	mn_now = ev_rt_now;
785	}	1321	}
786	}	1322	}
787		1323
788	int ev_loop_done;	1324	void
		1325	ev_ref (EV_P)
		1326	{
		1327	++activecnt;
		1328	}
789		1329
		1330	void
		1331	ev_unref (EV_P)
		1332	{
		1333	--activecnt;
		1334	}
		1335
		1336	static int loop_done;
		1337
		1338	void
790	void ev_loop (int flags)	1339	ev_loop (EV_P_ int flags)
791	{	1340	{
792	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
		1344
		1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
794		1346
795	do	1347	do
796	{	1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
797	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
799	{	1370	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	1372	call_pending (EV_A);
802	}	1373	}
803		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
		1378	/* we might have forked, so reify kernel state if necessary */
		1379	if (expect_false (postfork))
		1380	loop_fork (EV_A);
		1381
804	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
805	fd_reify ();	1383	fd_reify (EV_A);
806		1384
807	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
808		1388
809	/* we only need this for !monotonic clockor timers, but as we basically	1389	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
810	always have timers, we just calculate it always */	1390	block = 0.; /* do not block at all */
		1391	else
		1392	{
		1393	/* update time to cancel out callback processing overhead */
811	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
813	time_update_monotonic ();	1396	time_update_monotonic (EV_A);
814	else	1397	else
815	#endif	1398	#endif
816	{	1399	{
817	ev_now = ev_time ();	1400	ev_rt_now = ev_time ();
818	now = ev_now;	1401	mn_now = ev_rt_now;
819	}	1402	}
820		1403
821	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;
823	else
824	{
825	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
826		1405
827	if (timercnt)	1406	if (timercnt)
828	{	1407	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
830	if (block > to) block = to;	1409	if (block > to) block = to;
831	}	1410	}
832		1411
		1412	#if EV_PERIODIC_ENABLE
833	if (periodiccnt)	1413	if (periodiccnt)
834	{	1414	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
836	if (block > to) block = to;	1416	if (block > to) block = to;
837	}	1417	}
		1418	#endif
838		1419
839	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
840	}	1421	}
841		1422
842	method_poll (block);	1423	backend_poll (EV_A_ block);
		1424	}
843		1425
844	/* update ev_now, do magic */	1426	/* update ev_rt_now, do magic */
845	time_update ();	1427	time_update (EV_A);
846		1428
847	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
849	periodics_reify (); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
850		1434
851	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
852	if (!pendingcnt)	1436	if (idlecnt && !any_pending (EV_A))
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1438
855	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
856	if (checkcnt)	1440	if (expect_false (checkcnt))
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1442
859	call_pending ();	1443	call_pending (EV_A);
860	}
861	while (!ev_loop_done);
862		1444
863	if (ev_loop_done != 2)	1445	}
		1446	while (expect_true (activecnt && !loop_done));
		1447
		1448	if (loop_done == EVUNLOOP_ONE)
		1449	loop_done = EVUNLOOP_CANCEL;
		1450	}
		1451
		1452	void
		1453	ev_unloop (EV_P_ int how)
		1454	{
864	ev_loop_done = 0;	1455	loop_done = how;
865	}	1456	}
866		1457
867	/*****************************************************************************/	1458	/*****************************************************************************/
868		1459
869	static void	1460	void inline_size
870	wlist_add (WL *head, WL elem)	1461	wlist_add (WL *head, WL elem)
871	{	1462	{
872	elem->next = *head;	1463	elem->next = *head;
873	*head = elem;	1464	*head = elem;
874	}	1465	}
875		1466
876	static void	1467	void inline_size
877	wlist_del (WL *head, WL elem)	1468	wlist_del (WL *head, WL elem)
878	{	1469	{
879	while (*head)	1470	while (*head)
880	{	1471	{
881	if (*head == elem)	1472	if (*head == elem)
…		…
886		1477
887	head = &(*head)->next;	1478	head = &(*head)->next;
888	}	1479	}
889	}	1480	}
890		1481
891	static void	1482	void inline_speed
892	ev_clear_pending (W w)	1483	ev_clear_pending (EV_P_ W w)
893	{	1484	{
894	if (w->pending)	1485	if (w->pending)
895	{	1486	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1487	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1488	w->pending = 0;
898	}	1489	}
899	}	1490	}
900		1491
901	static void	1492	void inline_speed
902	ev_start (W w, int active)	1493	ev_start (EV_P_ W w, int active)
903	{	1494	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1495	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1496	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1497
907	w->active = active;	1498	w->active = active;
		1499	ev_ref (EV_A);
908	}	1500	}
909		1501
910	static void	1502	void inline_size
911	ev_stop (W w)	1503	ev_stop (EV_P_ W w)
912	{	1504	{
		1505	ev_unref (EV_A);
913	w->active = 0;	1506	w->active = 0;
914	}	1507	}
915		1508
916	/*****************************************************************************/	1509	/*****************************************************************************/
917		1510
918	void	1511	void
919	ev_io_start (struct ev_io *w)	1512	ev_io_start (EV_P_ ev_io *w)
920	{	1513	{
921	int fd = w->fd;	1514	int fd = w->fd;
922		1515
923	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
924	return;	1517	return;
925		1518
926	assert (("ev_io_start called with negative fd", fd >= 0));	1519	assert (("ev_io_start called with negative fd", fd >= 0));
927		1520
928	ev_start ((W)w, 1);	1521	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1522	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1523	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1524
932	fd_change (fd);	1525	fd_change (EV_A_ fd);
933	}	1526	}
934		1527
935	void	1528	void
936	ev_io_stop (struct ev_io *w)	1529	ev_io_stop (EV_P_ ev_io *w)
937	{	1530	{
938	ev_clear_pending ((W)w);	1531	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1532	if (expect_false (!ev_is_active (w)))
940	return;	1533	return;
		1534
		1535	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
941		1536
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1537	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1538	ev_stop (EV_A_ (W)w);
944		1539
945	fd_change (w->fd);	1540	fd_change (EV_A_ w->fd);
946	}	1541	}
947		1542
948	void	1543	void
949	ev_timer_start (struct ev_timer *w)	1544	ev_timer_start (EV_P_ ev_timer *w)
950	{	1545	{
951	if (ev_is_active (w))	1546	if (expect_false (ev_is_active (w)))
952	return;	1547	return;
953		1548
954	w->at += now;	1549	((WT)w)->at += mn_now;
955		1550
956	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1551	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
957		1552
958	ev_start ((W)w, ++timercnt);	1553	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1554	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
960	timers [timercnt - 1] = w;	1555	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1556	upheap ((WT *)timers, timercnt - 1);
962	}
963		1557
		1558	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1559	}
		1560
964	void	1561	void
965	ev_timer_stop (struct ev_timer *w)	1562	ev_timer_stop (EV_P_ ev_timer *w)
966	{	1563	{
967	ev_clear_pending ((W)w);	1564	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1565	if (expect_false (!ev_is_active (w)))
969	return;	1566	return;
970		1567
971	if (w->active < timercnt--)	1568	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1569
		1570	{
		1571	int active = ((W)w)->active;
		1572
		1573	if (expect_true (--active < --timercnt))
972	{	1574	{
973	timers [w->active - 1] = timers [timercnt];	1575	timers [active] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1576	adjustheap ((WT *)timers, timercnt, active);
975	}	1577	}
		1578	}
976		1579
977	w->at = w->repeat;	1580	((WT)w)->at -= mn_now;
978		1581
979	ev_stop ((W)w);	1582	ev_stop (EV_A_ (W)w);
980	}	1583	}
981		1584
982	void	1585	void
983	ev_timer_again (struct ev_timer *w)	1586	ev_timer_again (EV_P_ ev_timer *w)
984	{	1587	{
985	if (ev_is_active (w))	1588	if (ev_is_active (w))
986	{	1589	{
987	if (w->repeat)	1590	if (w->repeat)
988	{	1591	{
989	w->at = now + w->repeat;	1592	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1593	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1594	}
992	else	1595	else
993	ev_timer_stop (w);	1596	ev_timer_stop (EV_A_ w);
994	}	1597	}
995	else if (w->repeat)	1598	else if (w->repeat)
		1599	{
		1600	w->at = w->repeat;
996	ev_timer_start (w);	1601	ev_timer_start (EV_A_ w);
		1602	}
997	}	1603	}
998		1604
		1605	#if EV_PERIODIC_ENABLE
999	void	1606	void
1000	ev_periodic_start (struct ev_periodic *w)	1607	ev_periodic_start (EV_P_ ev_periodic *w)
1001	{	1608	{
1002	if (ev_is_active (w))	1609	if (expect_false (ev_is_active (w)))
1003	return;	1610	return;
1004		1611
		1612	if (w->reschedule_cb)
		1613	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1614	else if (w->interval)
		1615	{
1005	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1616	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1006
1007	/* this formula differs from the one in periodic_reify because we do not always round up */	1617	/* this formula differs from the one in periodic_reify because we do not always round up */
1008	if (w->interval)
1009	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1618	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1619	}
1010		1620
1011	ev_start ((W)w, ++periodiccnt);	1621	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1622	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1013	periodics [periodiccnt - 1] = w;	1623	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1624	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1625
		1626	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1627	}
		1628
1017	void	1629	void
1018	ev_periodic_stop (struct ev_periodic *w)	1630	ev_periodic_stop (EV_P_ ev_periodic *w)
1019	{	1631	{
1020	ev_clear_pending ((W)w);	1632	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
1022	return;	1634	return;
1023		1635
1024	if (w->active < periodiccnt--)	1636	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1637
		1638	{
		1639	int active = ((W)w)->active;
		1640
		1641	if (expect_true (--active < --periodiccnt))
1025	{	1642	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1643	periodics [active] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1644	adjustheap ((WT *)periodics, periodiccnt, active);
1028	}	1645	}
		1646	}
1029		1647
1030	ev_stop ((W)w);	1648	ev_stop (EV_A_ (W)w);
1031	}	1649	}
		1650
		1651	void
		1652	ev_periodic_again (EV_P_ ev_periodic *w)
		1653	{
		1654	/* TODO: use adjustheap and recalculation */
		1655	ev_periodic_stop (EV_A_ w);
		1656	ev_periodic_start (EV_A_ w);
		1657	}
		1658	#endif
1032		1659
1033	#ifndef SA_RESTART	1660	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1661	# define SA_RESTART 0
1035	#endif	1662	#endif
1036		1663
1037	void	1664	void
1038	ev_signal_start (struct ev_signal *w)	1665	ev_signal_start (EV_P_ ev_signal *w)
1039	{	1666	{
		1667	#if EV_MULTIPLICITY
		1668	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1669	#endif
1040	if (ev_is_active (w))	1670	if (expect_false (ev_is_active (w)))
1041	return;	1671	return;
1042		1672
1043	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1673	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1044		1674
1045	ev_start ((W)w, 1);	1675	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1676	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1678
1049	if (!w->next)	1679	if (!((WL)w)->next)
1050	{	1680	{
		1681	#if _WIN32
		1682	signal (w->signum, sighandler);
		1683	#else
1051	struct sigaction sa;	1684	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1685	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1686	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1687	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1688	sigaction (w->signum, &sa, 0);
		1689	#endif
1056	}	1690	}
1057	}	1691	}
1058		1692
1059	void	1693	void
1060	ev_signal_stop (struct ev_signal *w)	1694	ev_signal_stop (EV_P_ ev_signal *w)
1061	{	1695	{
1062	ev_clear_pending ((W)w);	1696	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1697	if (expect_false (!ev_is_active (w)))
1064	return;	1698	return;
1065		1699
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1700	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1701	ev_stop (EV_A_ (W)w);
1068		1702
1069	if (!signals [w->signum - 1].head)	1703	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1704	signal (w->signum, SIG_DFL);
1071	}	1705	}
1072		1706
1073	void	1707	void
		1708	ev_child_start (EV_P_ ev_child *w)
		1709	{
		1710	#if EV_MULTIPLICITY
		1711	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1712	#endif
		1713	if (expect_false (ev_is_active (w)))
		1714	return;
		1715
		1716	ev_start (EV_A_ (W)w, 1);
		1717	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1718	}
		1719
		1720	void
		1721	ev_child_stop (EV_P_ ev_child *w)
		1722	{
		1723	ev_clear_pending (EV_A_ (W)w);
		1724	if (expect_false (!ev_is_active (w)))
		1725	return;
		1726
		1727	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1728	ev_stop (EV_A_ (W)w);
		1729	}
		1730
		1731	#if EV_STAT_ENABLE
		1732
		1733	# ifdef _WIN32
		1734	# undef lstat
		1735	# define lstat(a,b) _stati64 (a,b)
		1736	# endif
		1737
		1738	#define DEF_STAT_INTERVAL 5.0074891
		1739	#define MIN_STAT_INTERVAL 0.1074891
		1740
		1741	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1742
		1743	#if EV_USE_INOTIFY
		1744	# define EV_INOTIFY_BUFSIZE 8192
		1745
		1746	static void noinline
		1747	infy_add (EV_P_ ev_stat *w)
		1748	{
		1749	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);
		1750
		1751	if (w->wd < 0)
		1752	{
		1753	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1754
		1755	/* monitor some parent directory for speedup hints */
		1756	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1757	{
		1758	char path [4096];
		1759	strcpy (path, w->path);
		1760
		1761	do
		1762	{
		1763	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1764	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1765
		1766	char *pend = strrchr (path, '/');
		1767
		1768	if (!pend)
		1769	break; /* whoops, no '/', complain to your admin */
		1770
		1771	*pend = 0;
		1772	w->wd = inotify_add_watch (fs_fd, path, mask);
		1773	}
		1774	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1775	}
		1776	}
		1777	else
		1778	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1779
		1780	if (w->wd >= 0)
		1781	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1782	}
		1783
		1784	static void noinline
		1785	infy_del (EV_P_ ev_stat *w)
		1786	{
		1787	int slot;
		1788	int wd = w->wd;
		1789
		1790	if (wd < 0)
		1791	return;
		1792
		1793	w->wd = -2;
		1794	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1795	wlist_del (&fs_hash [slot].head, (WL)w);
		1796
		1797	/* remove this watcher, if others are watching it, they will rearm */
		1798	inotify_rm_watch (fs_fd, wd);
		1799	}
		1800
		1801	static void noinline
		1802	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1803	{
		1804	if (slot < 0)
		1805	/* overflow, need to check for all hahs slots */
		1806	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1807	infy_wd (EV_A_ slot, wd, ev);
		1808	else
		1809	{
		1810	WL w_;
		1811
		1812	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1813	{
		1814	ev_stat *w = (ev_stat *)w_;
		1815	w_ = w_->next; /* lets us remove this watcher and all before it */
		1816
		1817	if (w->wd == wd || wd == -1)
		1818	{
		1819	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1820	{
		1821	w->wd = -1;
		1822	infy_add (EV_A_ w); /* re-add, no matter what */
		1823	}
		1824
		1825	stat_timer_cb (EV_A_ &w->timer, 0);
		1826	}
		1827	}
		1828	}
		1829	}
		1830
		1831	static void
		1832	infy_cb (EV_P_ ev_io *w, int revents)
		1833	{
		1834	char buf [EV_INOTIFY_BUFSIZE];
		1835	struct inotify_event *ev = (struct inotify_event *)buf;
		1836	int ofs;
		1837	int len = read (fs_fd, buf, sizeof (buf));
		1838
		1839	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1840	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1841	}
		1842
		1843	void inline_size
		1844	infy_init (EV_P)
		1845	{
		1846	if (fs_fd != -2)
		1847	return;
		1848
		1849	fs_fd = inotify_init ();
		1850
		1851	if (fs_fd >= 0)
		1852	{
		1853	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1854	ev_set_priority (&fs_w, EV_MAXPRI);
		1855	ev_io_start (EV_A_ &fs_w);
		1856	}
		1857	}
		1858
		1859	void inline_size
		1860	infy_fork (EV_P)
		1861	{
		1862	int slot;
		1863
		1864	if (fs_fd < 0)
		1865	return;
		1866
		1867	close (fs_fd);
		1868	fs_fd = inotify_init ();
		1869
		1870	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1871	{
		1872	WL w_ = fs_hash [slot].head;
		1873	fs_hash [slot].head = 0;
		1874
		1875	while (w_)
		1876	{
		1877	ev_stat *w = (ev_stat *)w_;
		1878	w_ = w_->next; /* lets us add this watcher */
		1879
		1880	w->wd = -1;
		1881
		1882	if (fs_fd >= 0)
		1883	infy_add (EV_A_ w); /* re-add, no matter what */
		1884	else
		1885	ev_timer_start (EV_A_ &w->timer);
		1886	}
		1887
		1888	}
		1889	}
		1890
		1891	#endif
		1892
		1893	void
		1894	ev_stat_stat (EV_P_ ev_stat *w)
		1895	{
		1896	if (lstat (w->path, &w->attr) < 0)
		1897	w->attr.st_nlink = 0;
		1898	else if (!w->attr.st_nlink)
		1899	w->attr.st_nlink = 1;
		1900	}
		1901
		1902	static void noinline
		1903	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1904	{
		1905	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1906
		1907	/* we copy this here each the time so that */
		1908	/* prev has the old value when the callback gets invoked */
		1909	w->prev = w->attr;
		1910	ev_stat_stat (EV_A_ w);
		1911
		1912	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1913	if (
		1914	w->prev.st_dev != w->attr.st_dev
		1915	|| w->prev.st_ino != w->attr.st_ino
		1916	|| w->prev.st_mode != w->attr.st_mode
		1917	|| w->prev.st_nlink != w->attr.st_nlink
		1918	|| w->prev.st_uid != w->attr.st_uid
		1919	|| w->prev.st_gid != w->attr.st_gid
		1920	|| w->prev.st_rdev != w->attr.st_rdev
		1921	|| w->prev.st_size != w->attr.st_size
		1922	|| w->prev.st_atime != w->attr.st_atime
		1923	|| w->prev.st_mtime != w->attr.st_mtime
		1924	|| w->prev.st_ctime != w->attr.st_ctime
		1925	) {
		1926	#if EV_USE_INOTIFY
		1927	infy_del (EV_A_ w);
		1928	infy_add (EV_A_ w);
		1929	ev_stat_stat (EV_A_ w); /* avoid race... */
		1930	#endif
		1931
		1932	ev_feed_event (EV_A_ w, EV_STAT);
		1933	}
		1934	}
		1935
		1936	void
		1937	ev_stat_start (EV_P_ ev_stat *w)
		1938	{
		1939	if (expect_false (ev_is_active (w)))
		1940	return;
		1941
		1942	/* since we use memcmp, we need to clear any padding data etc. */
		1943	memset (&w->prev, 0, sizeof (ev_statdata));
		1944	memset (&w->attr, 0, sizeof (ev_statdata));
		1945
		1946	ev_stat_stat (EV_A_ w);
		1947
		1948	if (w->interval < MIN_STAT_INTERVAL)
		1949	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1950
		1951	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1952	ev_set_priority (&w->timer, ev_priority (w));
		1953
		1954	#if EV_USE_INOTIFY
		1955	infy_init (EV_A);
		1956
		1957	if (fs_fd >= 0)
		1958	infy_add (EV_A_ w);
		1959	else
		1960	#endif
		1961	ev_timer_start (EV_A_ &w->timer);
		1962
		1963	ev_start (EV_A_ (W)w, 1);
		1964	}
		1965
		1966	void
		1967	ev_stat_stop (EV_P_ ev_stat *w)
		1968	{
		1969	ev_clear_pending (EV_A_ (W)w);
		1970	if (expect_false (!ev_is_active (w)))
		1971	return;
		1972
		1973	#if EV_USE_INOTIFY
		1974	infy_del (EV_A_ w);
		1975	#endif
		1976	ev_timer_stop (EV_A_ &w->timer);
		1977
		1978	ev_stop (EV_A_ (W)w);
		1979	}
		1980	#endif
		1981
		1982	void
1074	ev_idle_start (struct ev_idle *w)	1983	ev_idle_start (EV_P_ ev_idle *w)
1075	{	1984	{
1076	if (ev_is_active (w))	1985	if (expect_false (ev_is_active (w)))
1077	return;	1986	return;
1078		1987
1079	ev_start ((W)w, ++idlecnt);	1988	ev_start (EV_A_ (W)w, ++idlecnt);
1080	array_needsize (idles, idlemax, idlecnt, );	1989	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1081	idles [idlecnt - 1] = w;	1990	idles [idlecnt - 1] = w;
1082	}	1991	}
1083		1992
1084	void	1993	void
1085	ev_idle_stop (struct ev_idle *w)	1994	ev_idle_stop (EV_P_ ev_idle *w)
1086	{	1995	{
1087	ev_clear_pending ((W)w);	1996	ev_clear_pending (EV_A_ (W)w);
1088	if (ev_is_active (w))	1997	if (expect_false (!ev_is_active (w)))
1089	return;	1998	return;
1090		1999
		2000	{
		2001	int active = ((W)w)->active;
1091	idles [w->active - 1] = idles [--idlecnt];	2002	idles [active - 1] = idles [--idlecnt];
		2003	((W)idles [active - 1])->active = active;
		2004	}
		2005
1092	ev_stop ((W)w);	2006	ev_stop (EV_A_ (W)w);
1093	}	2007	}
1094		2008
1095	void	2009	void
1096	ev_prepare_start (struct ev_prepare *w)	2010	ev_prepare_start (EV_P_ ev_prepare *w)
1097	{	2011	{
1098	if (ev_is_active (w))	2012	if (expect_false (ev_is_active (w)))
1099	return;	2013	return;
1100		2014
1101	ev_start ((W)w, ++preparecnt);	2015	ev_start (EV_A_ (W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );	2016	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1103	prepares [preparecnt - 1] = w;	2017	prepares [preparecnt - 1] = w;
1104	}	2018	}
1105		2019
1106	void	2020	void
1107	ev_prepare_stop (struct ev_prepare *w)	2021	ev_prepare_stop (EV_P_ ev_prepare *w)
1108	{	2022	{
1109	ev_clear_pending ((W)w);	2023	ev_clear_pending (EV_A_ (W)w);
1110	if (ev_is_active (w))	2024	if (expect_false (!ev_is_active (w)))
1111	return;	2025	return;
1112		2026
		2027	{
		2028	int active = ((W)w)->active;
1113	prepares [w->active - 1] = prepares [--preparecnt];	2029	prepares [active - 1] = prepares [--preparecnt];
		2030	((W)prepares [active - 1])->active = active;
		2031	}
		2032
1114	ev_stop ((W)w);	2033	ev_stop (EV_A_ (W)w);
1115	}	2034	}
1116		2035
1117	void	2036	void
1118	ev_check_start (struct ev_check *w)	2037	ev_check_start (EV_P_ ev_check *w)
1119	{	2038	{
1120	if (ev_is_active (w))	2039	if (expect_false (ev_is_active (w)))
1121	return;	2040	return;
1122		2041
1123	ev_start ((W)w, ++checkcnt);	2042	ev_start (EV_A_ (W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );	2043	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1125	checks [checkcnt - 1] = w;	2044	checks [checkcnt - 1] = w;
1126	}	2045	}
1127		2046
1128	void	2047	void
1129	ev_check_stop (struct ev_check *w)	2048	ev_check_stop (EV_P_ ev_check *w)
1130	{	2049	{
1131	ev_clear_pending ((W)w);	2050	ev_clear_pending (EV_A_ (W)w);
1132	if (ev_is_active (w))	2051	if (expect_false (!ev_is_active (w)))
1133	return;	2052	return;
1134		2053
		2054	{
		2055	int active = ((W)w)->active;
1135	checks [w->active - 1] = checks [--checkcnt];	2056	checks [active - 1] = checks [--checkcnt];
		2057	((W)checks [active - 1])->active = active;
		2058	}
		2059
1136	ev_stop ((W)w);	2060	ev_stop (EV_A_ (W)w);
1137	}	2061	}
1138		2062
1139	void	2063	#if EV_EMBED_ENABLE
1140	ev_child_start (struct ev_child *w)	2064	void noinline
		2065	ev_embed_sweep (EV_P_ ev_embed *w)
1141	{	2066	{
		2067	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2068	}
		2069
		2070	static void
		2071	embed_cb (EV_P_ ev_io *io, int revents)
		2072	{
		2073	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2074
1142	if (ev_is_active (w))	2075	if (ev_cb (w))
1143	return;	2076	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2077	else
		2078	ev_embed_sweep (loop, w);
		2079	}
1144		2080
		2081	void
		2082	ev_embed_start (EV_P_ ev_embed *w)
		2083	{
		2084	if (expect_false (ev_is_active (w)))
		2085	return;
		2086
		2087	{
		2088	struct ev_loop *loop = w->loop;
		2089	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2090	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2091	}
		2092
		2093	ev_set_priority (&w->io, ev_priority (w));
		2094	ev_io_start (EV_A_ &w->io);
		2095
1145	ev_start ((W)w, 1);	2096	ev_start (EV_A_ (W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}	2097	}
1148		2098
1149	void	2099	void
1150	ev_child_stop (struct ev_child *w)	2100	ev_embed_stop (EV_P_ ev_embed *w)
1151	{	2101	{
1152	ev_clear_pending ((W)w);	2102	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))	2103	if (expect_false (!ev_is_active (w)))
1154	return;	2104	return;
1155		2105
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2106	ev_io_stop (EV_A_ &w->io);
		2107
1157	ev_stop ((W)w);	2108	ev_stop (EV_A_ (W)w);
1158	}	2109	}
		2110	#endif
		2111
		2112	#if EV_FORK_ENABLE
		2113	void
		2114	ev_fork_start (EV_P_ ev_fork *w)
		2115	{
		2116	if (expect_false (ev_is_active (w)))
		2117	return;
		2118
		2119	ev_start (EV_A_ (W)w, ++forkcnt);
		2120	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2121	forks [forkcnt - 1] = w;
		2122	}
		2123
		2124	void
		2125	ev_fork_stop (EV_P_ ev_fork *w)
		2126	{
		2127	ev_clear_pending (EV_A_ (W)w);
		2128	if (expect_false (!ev_is_active (w)))
		2129	return;
		2130
		2131	{
		2132	int active = ((W)w)->active;
		2133	forks [active - 1] = forks [--forkcnt];
		2134	((W)forks [active - 1])->active = active;
		2135	}
		2136
		2137	ev_stop (EV_A_ (W)w);
		2138	}
		2139	#endif
1159		2140
1160	/*****************************************************************************/	2141	/*****************************************************************************/
1161		2142
1162	struct ev_once	2143	struct ev_once
1163	{	2144	{
1164	struct ev_io io;	2145	ev_io io;
1165	struct ev_timer to;	2146	ev_timer to;
1166	void (*cb)(int revents, void *arg);	2147	void (*cb)(int revents, void *arg);
1167	void *arg;	2148	void *arg;
1168	};	2149	};
1169		2150
1170	static void	2151	static void
1171	once_cb (struct ev_once *once, int revents)	2152	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	2153	{
1173	void (*cb)(int revents, void *arg) = once->cb;	2154	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	2155	void *arg = once->arg;
1175		2156
1176	ev_io_stop (&once->io);	2157	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	2158	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	2159	ev_free (once);
1179		2160
1180	cb (revents, arg);	2161	cb (revents, arg);
1181	}	2162	}
1182		2163
1183	static void	2164	static void
1184	once_cb_io (struct ev_io *w, int revents)	2165	once_cb_io (EV_P_ ev_io *w, int revents)
1185	{	2166	{
1186	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2167	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1187	}	2168	}
1188		2169
1189	static void	2170	static void
1190	once_cb_to (struct ev_timer *w, int revents)	2171	once_cb_to (EV_P_ ev_timer *w, int revents)
1191	{	2172	{
1192	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2173	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1193	}	2174	}
1194		2175
1195	void	2176	void
1196	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2177	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1197	{	2178	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	2179	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1199		2180
1200	if (!once)	2181	if (expect_false (!once))
		2182	{
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2183	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1202	else	2184	return;
1203	{	2185	}
		2186
1204	once->cb = cb;	2187	once->cb = cb;
1205	once->arg = arg;	2188	once->arg = arg;
1206		2189
1207	ev_watcher_init (&once->io, once_cb_io);	2190	ev_init (&once->io, once_cb_io);
1208	if (fd >= 0)	2191	if (fd >= 0)
1209	{	2192	{
1210	ev_io_set (&once->io, fd, events);	2193	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	2194	ev_io_start (EV_A_ &once->io);
1212	}	2195	}
1213		2196
1214	ev_watcher_init (&once->to, once_cb_to);	2197	ev_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	2198	if (timeout >= 0.)
1216	{	2199	{
1217	ev_timer_set (&once->to, timeout, 0.);	2200	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	2201	ev_timer_start (EV_A_ &once->to);
1219	}
1220	}
1221	}
1222
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{	2202	}
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}	2203	}
1300		2204
		2205	#ifdef __cplusplus
		2206	}
1301	#endif	2207	#endif
1302		2208
1303
1304
1305

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