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Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.166 by root, Sat Dec 8 03:53:36 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>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	119	#include <time.h>
50		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
		129	#ifndef _WIN32
		130	# include <sys/time.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
		138	# endif
		139	#endif
		140
		141	/**/
		142
51	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
52	# ifdef CLOCK_MONOTONIC
53	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
54	# endif	145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
55	#endif	149	#endif
56		150
57	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
59	#endif	153	#endif
60		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
61	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
62	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
63	#endif	165	#endif
64		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		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
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
65	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
66	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
67	#endif	205	#endif
68	#ifndef EV_USE_REALTIME	206
69	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
70	#endif	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
		219	/**/
71		220
72	#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) */
73	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
74	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
75	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* 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 */
76		224
77	#include "ev.h"	225	#if __GNUC__ >= 3
		226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
		229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
		235	#else
		236	# define expect(expr,value) (expr)
		237	# define inline_speed static
		238	# define inline_size static
		239	# define noinline
		240	#endif
78		241
		242	#define expect_false(expr) expect ((expr) != 0, 0)
		243	#define expect_true(expr) expect ((expr) != 0, 1)
		244
		245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
79	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
80	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
81	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
82		254
83	static ev_tstamp 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
84	ev_tstamp ev_now;	353	ev_tstamp ev_rt_now;
85	int ev_method;	354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
86		357
87	static int have_monotonic; /* runtime */	358	static int ev_default_loop_ptr;
88		359
89	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	360	#endif
90	static void (*method_modify)(int fd, int oev, int nev);
91	static void (*method_poll)(ev_tstamp timeout);
92		361
93	/*****************************************************************************/	362	/*****************************************************************************/
94		363
95	ev_tstamp	364	ev_tstamp
96	ev_time (void)	365	ev_time (void)
…		…
104	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
105	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
106	#endif	375	#endif
107	}	376	}
108		377
109	static ev_tstamp	378	ev_tstamp inline_size
110	get_clock (void)	379	get_clock (void)
111	{	380	{
112	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
113	if (have_monotonic)	382	if (expect_true (have_monotonic))
114	{	383	{
115	struct timespec ts;	384	struct timespec ts;
116	clock_gettime (CLOCK_MONOTONIC, &ts);	385	clock_gettime (CLOCK_MONOTONIC, &ts);
117	return ts.tv_sec + ts.tv_nsec * 1e-9;	386	return ts.tv_sec + ts.tv_nsec * 1e-9;
118	}	387	}
119	#endif	388	#endif
120		389
121	return ev_time ();	390	return ev_time ();
122	}	391	}
123		392
124	#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
125		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
126	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
127	if ((cnt) > cur) \	430	if (expect_false ((cnt) > (cur))) \
128	{ \	431	{ \
129	int newcnt = cur; \	432	int ocur_ = (cur); \
130	do \	433	(base) = (type *)array_realloc \
131	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
132	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
133	} \	436	}
134	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
135	\	441	{ \
136	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
137	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
138	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
139	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
140		450
141	/*****************************************************************************/	451	/*****************************************************************************/
142		452
143	typedef struct	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
144	{	455	{
145	struct ev_io *head;	456	W w_ = (W)w;
146	unsigned char events;
147	unsigned char reify;
148	} ANFD;
149		457
150	static ANFD *anfds;	458	if (expect_false (w_->pending))
151	static int anfdmax;	459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
152		463
153	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
154	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
155	{	483	{
156	while (count--)	484	while (count--)
157	{	485	{
158	base->head = 0;	486	base->head = 0;
…		…
161		489
162	++base;	490	++base;
163	}	491	}
164	}	492	}
165		493
166	typedef struct	494	void inline_speed
167	{
168	W w;
169	int events;
170	} ANPENDING;
171
172	static ANPENDING *pendings;
173	static int pendingmax, pendingcnt;
174
175	static void
176	event (W w, int events)
177	{
178	if (w->pending)
179	{
180	pendings [w->pending - 1].events |= events;
181	return;
182	}
183
184	w->pending = ++pendingcnt;
185	array_needsize (pendings, pendingmax, pendingcnt, );
186	pendings [pendingcnt - 1].w = w;
187	pendings [pendingcnt - 1].events = events;
188	}
189
190	static void
191	queue_events (W *events, int eventcnt, int type)
192	{
193	int i;
194
195	for (i = 0; i < eventcnt; ++i)
196	event (events [i], type);
197	}
198
199	static void
200	fd_event (int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
201	{	496	{
202	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
203	struct ev_io *w;	498	ev_io *w;
204		499
205	for (w = anfd->head; w; w = w->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
206	{	501	{
207	int ev = w->events & events;	502	int ev = w->events & revents;
208		503
209	if (ev)	504	if (ev)
210	event ((W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
211	}	506	}
212	}	507	}
213		508
214	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
215		514
216	static int *fdchanges;	515	void inline_size
217	static int fdchangemax, fdchangecnt;	516	fd_reify (EV_P)
218
219	static void
220	fd_reify (void)
221	{	517	{
222	int i;	518	int i;
223		519
224	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
225	{	521	{
226	int fd = fdchanges [i];	522	int fd = fdchanges [i];
227	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
228	struct ev_io *w;	524	ev_io *w;
229		525
230	int events = 0;	526	int events = 0;
231		527
232	for (w = anfd->head; w; w = w->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
233	events |= w->events;	529	events |= w->events;
234		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
235	anfd->reify = 0;	540	anfd->reify = 0;
236		541
237	if (anfd->events != events)
238	{
239	method_modify (fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
240	anfd->events = events;	543	anfd->events = events;
241	}
242	}	544	}
243		545
244	fdchangecnt = 0;	546	fdchangecnt = 0;
245	}	547	}
246		548
247	static void	549	void inline_size
248	fd_change (int fd)	550	fd_change (EV_P_ int fd)
249	{	551	{
250	if (anfds [fd].reify || fdchangecnt < 0)	552	if (expect_false (anfds [fd].reify))
251	return;	553	return;
252		554
253	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
254		556
255	++fdchangecnt;	557	++fdchangecnt;
256	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
257	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
258	}	560	}
259		561
		562	void inline_speed
		563	fd_kill (EV_P_ int fd)
		564	{
		565	ev_io *w;
		566
		567	while ((w = (ev_io *)anfds [fd].head))
		568	{
		569	ev_io_stop (EV_A_ w);
		570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		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
		582	}
		583
260	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
261	static void	585	static void noinline
262	fd_recheck (void)	586	fd_ebadf (EV_P)
263	{	587	{
264	int fd;	588	int fd;
265		589
266	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
267	if (anfds [fd].events)	591	if (anfds [fd].events)
268	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
269	while (anfds [fd].head)	593	fd_kill (EV_A_ fd);
		594	}
		595
		596	/* called on ENOMEM in select/poll to kill some fds and retry */
		597	static void noinline
		598	fd_enomem (EV_P)
		599	{
		600	int fd;
		601
		602	for (fd = anfdmax; fd--; )
		603	if (anfds [fd].events)
270	{	604	{
271	ev_io_stop (anfds [fd].head);	605	fd_kill (EV_A_ fd);
272	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	606	return;
273	}	607	}
		608	}
		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	}
274	}	622	}
275		623
276	/*****************************************************************************/	624	/*****************************************************************************/
277		625
278	static struct ev_timer **timers;	626	void inline_speed
279	static int timermax, timercnt;
280
281	static struct ev_periodic **periodics;
282	static int periodicmax, periodiccnt;
283
284	static void
285	upheap (WT *timers, int k)	627	upheap (WT *heap, int k)
286	{	628	{
287	WT w = timers [k];	629	WT w = heap [k];
288		630
289	while (k && timers [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
290	{	632	{
291	timers [k] = timers [k >> 1];	633	heap [k] = heap [k >> 1];
292	timers [k]->active = k + 1;	634	((W)heap [k])->active = k + 1;
293	k >>= 1;	635	k >>= 1;
294	}	636	}
295		637
296	timers [k] = w;	638	heap [k] = w;
297	timers [k]->active = k + 1;	639	((W)heap [k])->active = k + 1;
298		640
299	}	641	}
300		642
301	static void	643	void inline_speed
302	downheap (WT *timers, int N, int k)	644	downheap (WT *heap, int N, int k)
303	{	645	{
304	WT w = timers [k];	646	WT w = heap [k];
305		647
306	while (k < (N >> 1))	648	while (k < (N >> 1))
307	{	649	{
308	int j = k << 1;	650	int j = k << 1;
309		651
310	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
311	++j;	653	++j;
312		654
313	if (w->at <= timers [j]->at)	655	if (w->at <= heap [j]->at)
314	break;	656	break;
315		657
316	timers [k] = timers [j];	658	heap [k] = heap [j];
317	timers [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
318	k = j;	660	k = j;
319	}	661	}
320		662
321	timers [k] = w;	663	heap [k] = w;
322	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);
323	}	672	}
324		673
325	/*****************************************************************************/	674	/*****************************************************************************/
326		675
327	typedef struct	676	typedef struct
328	{	677	{
329	struct ev_signal *head;	678	WL head;
330	sig_atomic_t volatile gotsig;	679	sig_atomic_t volatile gotsig;
331	} ANSIG;	680	} ANSIG;
332		681
333	static ANSIG *signals;	682	static ANSIG *signals;
334	static int signalmax;	683	static int signalmax;
335		684
336	static int sigpipe [2];	685	static int sigpipe [2];
337	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
338	static struct ev_io sigev;	687	static ev_io sigev;
339		688
340	static void	689	void inline_size
341	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
342	{	691	{
343	while (count--)	692	while (count--)
344	{	693	{
345	base->head = 0;	694	base->head = 0;
…		…
350	}	699	}
351		700
352	static void	701	static void
353	sighandler (int signum)	702	sighandler (int signum)
354	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
355	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
356		709
357	if (!gotsig)	710	if (!gotsig)
358	{	711	{
		712	int old_errno = errno;
359	gotsig = 1;	713	gotsig = 1;
360	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
		715	errno = old_errno;
361	}	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);
362	}	737	}
363		738
364	static void	739	static void
365	sigcb (struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
366	{	741	{
367	struct ev_signal *w;
368	int sig;	742	int signum;
369		743
370	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
371	gotsig = 0;	745	gotsig = 0;
372		746
373	for (sig = signalmax; sig--; )	747	for (signum = signalmax; signum--; )
374	if (signals [sig].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)
375	{	790	{
376	signals [sig].gotsig = 0;	791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
377		792	w->rpid = pid;
378	for (w = signals [sig].head; w; w = w->next)	793	w->rstatus = status;
379	event ((W)w, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
380	}	795	}
381	}	796	}
382
383	static void
384	siginit (void)
385	{
386	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
387	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
388
389	/* rather than sort out wether we really need nb, set it */
390	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
391	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
392
393	ev_io_set (&sigev, sigpipe [0], EV_READ);
394	ev_io_start (&sigev);
395	}
396
397	/*****************************************************************************/
398
399	static struct ev_idle **idles;
400	static int idlemax, idlecnt;
401
402	static struct ev_prepare **prepares;
403	static int preparemax, preparecnt;
404
405	static struct ev_check **checks;
406	static int checkmax, checkcnt;
407
408	/*****************************************************************************/
409
410	static struct ev_child *childs [PID_HASHSIZE];
411	static struct ev_signal childev;
412		797
413	#ifndef WCONTINUED	798	#ifndef WCONTINUED
414	# define WCONTINUED 0	799	# define WCONTINUED 0
415	#endif	800	#endif
416		801
417	static void	802	static void
418	childcb (struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
419	{	804	{
420	struct ev_child *w;
421	int pid, status;	805	int pid, status;
422		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
423	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
424	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	809	if (!WCONTINUED
425	if (w->pid == pid || w->pid == -1)	810	|| errno != EINVAL
426	{	811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
427	w->status = status;	812	return;
428	event ((W)w, EV_CHILD);	813
429	}	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 */
430	}	821	}
		822
		823	#endif
431		824
432	/*****************************************************************************/	825	/*****************************************************************************/
433		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
		830	#if EV_USE_KQUEUE
		831	# include "ev_kqueue.c"
		832	#endif
434	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
435	# include "ev_epoll.c"	834	# include "ev_epoll.c"
436	#endif	835	#endif
		836	#if EV_USE_POLL
		837	# include "ev_poll.c"
		838	#endif
437	#if EV_USE_SELECT	839	#if EV_USE_SELECT
438	# include "ev_select.c"	840	# include "ev_select.c"
439	#endif	841	#endif
440		842
441	int	843	int
…		…
448	ev_version_minor (void)	850	ev_version_minor (void)
449	{	851	{
450	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
451	}	853	}
452		854
453	int ev_init (int flags)	855	/* return true if we are running with elevated privileges and should ignore env variables */
		856	int inline_size
		857	enable_secure (void)
454	{	858	{
455	if (!ev_method)	859	#ifdef _WIN32
		860	return 0;
		861	#else
		862	return getuid () != geteuid ()
		863	|| getgid () != getegid ();
		864	#endif
		865	}
		866
		867	unsigned int
		868	ev_supported_backends (void)
		869	{
		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)
456	{	923	{
457	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
458	{	925	{
459	struct timespec ts;	926	struct timespec ts;
460	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
461	have_monotonic = 1;	928	have_monotonic = 1;
462	}	929	}
463	#endif	930	#endif
464		931
465	ev_now = ev_time ();	932	ev_rt_now = ev_time ();
466	now = get_clock ();	933	mn_now = get_clock ();
		934	now_floor = mn_now;
467	diff = ev_now - now;	935	rtmn_diff = ev_rt_now - mn_now;
468		936
469	if (pipe (sigpipe))	937	/* pid check not overridable via env */
470	return 0;	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
471		942
472	ev_method = EVMETHOD_NONE;	943	if (!(flags & EVFLAG_NOENV)
		944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
		946	flags = atoi (getenv ("LIBEV_FLAGS"));
		947
		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
		960	#if EV_USE_KQUEUE
		961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		962	#endif
473	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
474	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		965	#endif
		966	#if EV_USE_POLL
		967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
475	#endif	968	#endif
476	#if EV_USE_SELECT	969	#if EV_USE_SELECT
477	if (ev_method == EVMETHOD_NONE) select_init (flags);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
478	#endif	971	#endif
479		972
480	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))
481	{	1117	{
482	ev_watcher_init (&sigev, sigcb);
483	siginit ();	1118	siginit (EV_A);
484		1119
		1120	#ifndef _WIN32
485	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
		1122	ev_set_priority (&childev, EV_MAXPRI);
486	ev_signal_start (&childev);	1123	ev_signal_start (EV_A_ &childev);
		1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1125	#endif
487	}	1126	}
		1127	else
		1128	ev_default_loop_ptr = 0;
488	}	1129	}
489		1130
490	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;
491	}	1164	}
492		1165
493	/*****************************************************************************/	1166	/*****************************************************************************/
494		1167
495	void	1168	void inline_speed
496	ev_fork_prepare (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_fork_parent (void)
503	{
504	/* nop */
505	}
506
507	void
508	ev_fork_child (void)
509	{
510	#if EV_USE_EPOLL
511	if (ev_method == EVMETHOD_EPOLL)
512	epoll_postfork_child ();
513	#endif
514
515	ev_io_stop (&sigev);
516	close (sigpipe [0]);
517	close (sigpipe [1]);
518	pipe (sigpipe);
519	siginit ();
520	}
521
522	/*****************************************************************************/
523
524	static void
525	call_pending (void)	1169	call_pending (EV_P)
526	{	1170	{
		1171	int pri;
		1172
		1173	for (pri = NUMPRI; pri--; )
527	while (pendingcnt)	1174	while (pendingcnt [pri])
528	{	1175	{
529	ANPENDING *p = pendings + --pendingcnt;	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
530		1177
531	if (p->w)	1178	if (expect_true (p->w))
532	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
533	p->w->pending = 0;	1182	p->w->pending = 0;
534	p->w->cb (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
535	}	1184	}
536	}	1185	}
537	}	1186	}
538		1187
539	static void	1188	void inline_size
540	timers_reify (void)	1189	timers_reify (EV_P)
541	{	1190	{
542	while (timercnt && timers [0]->at <= now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
543	{	1192	{
544	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)));*/
545		1196
546	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
547	if (w->repeat)	1198	if (w->repeat)
548	{	1199	{
549	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
550	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
551	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
552	}	1207	}
553	else	1208	else
554	ev_timer_stop (w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
555		1210
556	event ((W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
557	}	1212	}
558	}	1213	}
559		1214
560	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
561	periodics_reify (void)	1217	periodics_reify (EV_P)
562	{	1218	{
563	while (periodiccnt && periodics [0]->at <= ev_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
564	{	1220	{
565	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)));*/
566		1224
567	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
568	if (w->interval)	1226	if (w->reschedule_cb)
569	{	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	{
570	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;
571	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));
572	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
573	}	1237	}
574	else	1238	else
575	ev_periodic_stop (w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
576		1240
577	event ((W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
578	}	1242	}
579	}	1243	}
580		1244
581	static void	1245	static void noinline
582	periodics_reschedule (ev_tstamp diff)	1246	periodics_reschedule (EV_P)
583	{	1247	{
584	int i;	1248	int i;
585		1249
586	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
587	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
588	{	1252	{
589	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
590		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
591	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--; )
592	{	1276	{
593	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
594		1279
595	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
596	{	1281	{
597	ev_periodic_stop (w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
598	ev_periodic_start (w);	1283	break;
599
600	i = 0; /* restart loop, inefficient, but time jumps should be rare */
601	}	1284	}
602	}	1285	}
603	}	1286	}
604	}	1287	}
		1288	#endif
605		1289
606	static void	1290	int inline_size
		1291	time_update_monotonic (EV_P)
		1292	{
		1293	mn_now = get_clock ();
		1294
		1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1296	{
		1297	ev_rt_now = rtmn_diff + mn_now;
		1298	return 0;
		1299	}
		1300	else
		1301	{
		1302	now_floor = mn_now;
		1303	ev_rt_now = ev_time ();
		1304	return 1;
		1305	}
		1306	}
		1307
		1308	void inline_size
607	time_update (void)	1309	time_update (EV_P)
608	{	1310	{
609	int i;	1311	int i;
610		1312
611	ev_now = ev_time ();	1313	#if EV_USE_MONOTONIC
612
613	if (have_monotonic)	1314	if (expect_true (have_monotonic))
614	{	1315	{
615	ev_tstamp odiff = diff;	1316	if (time_update_monotonic (EV_A))
616
617	for (i = 4; --i; ) /* loop a few times, before making important decisions */
618	{	1317	{
619	now = get_clock ();	1318	ev_tstamp odiff = rtmn_diff;
		1319
		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; )
		1329	{
620	diff = ev_now - now;	1330	rtmn_diff = ev_rt_now - mn_now;
621		1331
622	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
623	return; /* all is well */	1333	return; /* all is well */
624		1334
625	ev_now = ev_time ();	1335	ev_rt_now = ev_time ();
		1336	mn_now = get_clock ();
		1337	now_floor = mn_now;
		1338	}
		1339
		1340	# if EV_PERIODIC_ENABLE
		1341	periodics_reschedule (EV_A);
		1342	# endif
		1343	/* no timer adjustment, as the monotonic clock doesn't jump */
		1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
626	}	1345	}
627
628	periodics_reschedule (diff - odiff);
629	/* no timer adjustment, as the monotonic clock doesn't jump */
630	}	1346	}
631	else	1347	else
		1348	#endif
632	{	1349	{
633	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1350	ev_rt_now = ev_time ();
		1351
		1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
634	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
635	periodics_reschedule (ev_now - now);	1355	periodics_reschedule (EV_A);
		1356	#endif
636		1357
637	/* 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 */
638	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
639	timers [i]->at += diff;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
640	}	1361	}
641		1362
642	now = ev_now;	1363	mn_now = ev_rt_now;
643	}	1364	}
644	}	1365	}
645		1366
646	int ev_loop_done;	1367	void
		1368	ev_ref (EV_P)
		1369	{
		1370	++activecnt;
		1371	}
647		1372
		1373	void
		1374	ev_unref (EV_P)
		1375	{
		1376	--activecnt;
		1377	}
		1378
		1379	static int loop_done;
		1380
		1381	void
648	void ev_loop (int flags)	1382	ev_loop (EV_P_ int flags)
649	{	1383	{
650	double block;
651	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 */
652		1389
653	do	1390	do
654	{	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
655	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
656	if (preparecnt)	1412	if (expect_false (preparecnt))
657	{	1413	{
658	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
659	call_pending ();	1415	call_pending (EV_A);
660	}	1416	}
661		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
662	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
663	fd_reify ();	1426	fd_reify (EV_A);
664		1427
665	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
666		1431
667	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
668	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
669	ev_now = ev_time ();
670
671	if (flags & EVLOOP_NONBLOCK || idlecnt)
672	block = 0.;
673	else	1434	else
674	{	1435	{
		1436	/* update time to cancel out callback processing overhead */
		1437	#if EV_USE_MONOTONIC
		1438	if (expect_true (have_monotonic))
		1439	time_update_monotonic (EV_A);
		1440	else
		1441	#endif
		1442	{
		1443	ev_rt_now = ev_time ();
		1444	mn_now = ev_rt_now;
		1445	}
		1446
675	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
676		1448
677	if (timercnt)	1449	if (timercnt)
678	{	1450	{
679	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
680	if (block > to) block = to;	1452	if (block > to) block = to;
681	}	1453	}
682		1454
		1455	#if EV_PERIODIC_ENABLE
683	if (periodiccnt)	1456	if (periodiccnt)
684	{	1457	{
685	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
686	if (block > to) block = to;	1459	if (block > to) block = to;
687	}	1460	}
		1461	#endif
688		1462
689	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
690	}	1464	}
691		1465
692	method_poll (block);	1466	++loop_count;
		1467	backend_poll (EV_A_ block);
		1468	}
693		1469
694	/* update ev_now, do magic */	1470	/* update ev_rt_now, do magic */
695	time_update ();	1471	time_update (EV_A);
696		1472
697	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
698	timers_reify (); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
699	periodics_reify (); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
700		1478
		1479	#if EV_IDLE_ENABLE
701	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
702	if (!pendingcnt)	1481	idle_reify (EV_A);
703	queue_events ((W *)idles, idlecnt, EV_IDLE);	1482	#endif
704		1483
705	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
706	if (checkcnt)	1485	if (expect_false (checkcnt))
707	queue_events ((W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
708		1487
709	call_pending ();	1488	call_pending (EV_A);
710	}
711	while (!ev_loop_done);
712		1489
713	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	{
714	ev_loop_done = 0;	1500	loop_done = how;
715	}	1501	}
716		1502
717	/*****************************************************************************/	1503	/*****************************************************************************/
718		1504
719	static void	1505	void inline_size
720	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
721	{	1507	{
722	elem->next = *head;	1508	elem->next = *head;
723	*head = elem;	1509	*head = elem;
724	}	1510	}
725		1511
726	static void	1512	void inline_size
727	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
728	{	1514	{
729	while (*head)	1515	while (*head)
730	{	1516	{
731	if (*head == elem)	1517	if (*head == elem)
…		…
736		1522
737	head = &(*head)->next;	1523	head = &(*head)->next;
738	}	1524	}
739	}	1525	}
740		1526
741	static void	1527	void inline_speed
742	ev_clear_pending (W w)	1528	clear_pending (EV_P_ W w)
743	{	1529	{
744	if (w->pending)	1530	if (w->pending)
745	{	1531	{
746	pendings [w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
747	w->pending = 0;	1533	w->pending = 0;
748	}	1534	}
749	}	1535	}
750		1536
751	static void	1537	void
		1538	ev_clear_pending (EV_P_ void *w, int invoke)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (pending)
		1544	{
		1545	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1546
		1547	w_->pending = 0;
		1548	p->w = 0;
		1549
		1550	if (invoke)
		1551	EV_CB_INVOKE (w_, p->events);
		1552	}
		1553	}
		1554
		1555	void inline_size
		1556	pri_adjust (EV_P_ W w)
		1557	{
		1558	int pri = w->priority;
		1559	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1560	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1561	w->priority = pri;
		1562	}
		1563
		1564	void inline_speed
752	ev_start (W w, int active)	1565	ev_start (EV_P_ W w, int active)
753	{	1566	{
		1567	pri_adjust (EV_A_ w);
754	w->active = active;	1568	w->active = active;
		1569	ev_ref (EV_A);
755	}	1570	}
756		1571
757	static void	1572	void inline_size
758	ev_stop (W w)	1573	ev_stop (EV_P_ W w)
759	{	1574	{
		1575	ev_unref (EV_A);
760	w->active = 0;	1576	w->active = 0;
761	}	1577	}
762		1578
763	/*****************************************************************************/	1579	/*****************************************************************************/
764		1580
765	void	1581	void
766	ev_io_start (struct ev_io *w)	1582	ev_io_start (EV_P_ ev_io *w)
767	{	1583	{
768	if (ev_is_active (w))
769	return;
770
771	int fd = w->fd;	1584	int fd = w->fd;
772		1585
		1586	if (expect_false (ev_is_active (w)))
		1587	return;
		1588
773	assert (("ev_io_start called with negative fd", fd >= 0));	1589	assert (("ev_io_start called with negative fd", fd >= 0));
774		1590
775	ev_start ((W)w, 1);	1591	ev_start (EV_A_ (W)w, 1);
776	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1592	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
777	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1593	wlist_add ((WL *)&anfds[fd].head, (WL)w);
778		1594
779	fd_change (fd);	1595	fd_change (EV_A_ fd);
780	}	1596	}
781		1597
782	void	1598	void
783	ev_io_stop (struct ev_io *w)	1599	ev_io_stop (EV_P_ ev_io *w)
784	{	1600	{
785	ev_clear_pending ((W)w);	1601	clear_pending (EV_A_ (W)w);
786	if (!ev_is_active (w))	1602	if (expect_false (!ev_is_active (w)))
787	return;	1603	return;
		1604
		1605	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
788		1606
789	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1607	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
790	ev_stop ((W)w);	1608	ev_stop (EV_A_ (W)w);
791		1609
792	fd_change (w->fd);	1610	fd_change (EV_A_ w->fd);
793	}	1611	}
794		1612
795	void	1613	void
796	ev_timer_start (struct ev_timer *w)	1614	ev_timer_start (EV_P_ ev_timer *w)
797	{	1615	{
798	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
799	return;	1617	return;
800		1618
801	w->at += now;	1619	((WT)w)->at += mn_now;
802		1620
803	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1621	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
804		1622
805	ev_start ((W)w, ++timercnt);	1623	ev_start (EV_A_ (W)w, ++timercnt);
806	array_needsize (timers, timermax, timercnt, );	1624	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
807	timers [timercnt - 1] = w;	1625	timers [timercnt - 1] = w;
808	upheap ((WT *)timers, timercnt - 1);	1626	upheap ((WT *)timers, timercnt - 1);
809	}
810		1627
		1628	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1629	}
		1630
811	void	1631	void
812	ev_timer_stop (struct ev_timer *w)	1632	ev_timer_stop (EV_P_ ev_timer *w)
813	{	1633	{
814	ev_clear_pending ((W)w);	1634	clear_pending (EV_A_ (W)w);
815	if (!ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
816	return;	1636	return;
817		1637
818	if (w->active < timercnt--)	1638	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1639
		1640	{
		1641	int active = ((W)w)->active;
		1642
		1643	if (expect_true (--active < --timercnt))
819	{	1644	{
820	timers [w->active - 1] = timers [timercnt];	1645	timers [active] = timers [timercnt];
821	downheap ((WT *)timers, timercnt, w->active - 1);	1646	adjustheap ((WT *)timers, timercnt, active);
822	}	1647	}
		1648	}
823		1649
824	w->at = w->repeat;	1650	((WT)w)->at -= mn_now;
825		1651
826	ev_stop ((W)w);	1652	ev_stop (EV_A_ (W)w);
827	}	1653	}
828		1654
829	void	1655	void
830	ev_timer_again (struct ev_timer *w)	1656	ev_timer_again (EV_P_ ev_timer *w)
831	{	1657	{
832	if (ev_is_active (w))	1658	if (ev_is_active (w))
833	{	1659	{
834	if (w->repeat)	1660	if (w->repeat)
835	{	1661	{
836	w->at = now + w->repeat;	1662	((WT)w)->at = mn_now + w->repeat;
837	downheap ((WT *)timers, timercnt, w->active - 1);	1663	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
838	}	1664	}
839	else	1665	else
840	ev_timer_stop (w);	1666	ev_timer_stop (EV_A_ w);
841	}	1667	}
842	else if (w->repeat)	1668	else if (w->repeat)
		1669	{
		1670	w->at = w->repeat;
843	ev_timer_start (w);	1671	ev_timer_start (EV_A_ w);
		1672	}
844	}	1673	}
845		1674
		1675	#if EV_PERIODIC_ENABLE
846	void	1676	void
847	ev_periodic_start (struct ev_periodic *w)	1677	ev_periodic_start (EV_P_ ev_periodic *w)
848	{	1678	{
849	if (ev_is_active (w))	1679	if (expect_false (ev_is_active (w)))
850	return;	1680	return;
851		1681
		1682	if (w->reschedule_cb)
		1683	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1684	else if (w->interval)
		1685	{
852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1686	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
853
854	/* this formula differs from the one in periodic_reify because we do not always round up */	1687	/* this formula differs from the one in periodic_reify because we do not always round up */
855	if (w->interval)
856	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1688	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1689	}
857		1690
858	ev_start ((W)w, ++periodiccnt);	1691	ev_start (EV_A_ (W)w, ++periodiccnt);
859	array_needsize (periodics, periodicmax, periodiccnt, );	1692	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
860	periodics [periodiccnt - 1] = w;	1693	periodics [periodiccnt - 1] = w;
861	upheap ((WT *)periodics, periodiccnt - 1);	1694	upheap ((WT *)periodics, periodiccnt - 1);
862	}
863		1695
		1696	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1697	}
		1698
864	void	1699	void
865	ev_periodic_stop (struct ev_periodic *w)	1700	ev_periodic_stop (EV_P_ ev_periodic *w)
866	{	1701	{
867	ev_clear_pending ((W)w);	1702	clear_pending (EV_A_ (W)w);
868	if (!ev_is_active (w))	1703	if (expect_false (!ev_is_active (w)))
869	return;	1704	return;
870		1705
871	if (w->active < periodiccnt--)	1706	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1707
		1708	{
		1709	int active = ((W)w)->active;
		1710
		1711	if (expect_true (--active < --periodiccnt))
872	{	1712	{
873	periodics [w->active - 1] = periodics [periodiccnt];	1713	periodics [active] = periodics [periodiccnt];
874	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1714	adjustheap ((WT *)periodics, periodiccnt, active);
875	}	1715	}
		1716	}
876		1717
877	ev_stop ((W)w);	1718	ev_stop (EV_A_ (W)w);
878	}	1719	}
879		1720
880	void	1721	void
		1722	ev_periodic_again (EV_P_ ev_periodic *w)
		1723	{
		1724	/* TODO: use adjustheap and recalculation */
		1725	ev_periodic_stop (EV_A_ w);
		1726	ev_periodic_start (EV_A_ w);
		1727	}
		1728	#endif
		1729
		1730	#ifndef SA_RESTART
		1731	# define SA_RESTART 0
		1732	#endif
		1733
		1734	void
881	ev_signal_start (struct ev_signal *w)	1735	ev_signal_start (EV_P_ ev_signal *w)
882	{	1736	{
		1737	#if EV_MULTIPLICITY
		1738	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1739	#endif
883	if (ev_is_active (w))	1740	if (expect_false (ev_is_active (w)))
884	return;	1741	return;
885		1742
886	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1743	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
887		1744
888	ev_start ((W)w, 1);	1745	ev_start (EV_A_ (W)w, 1);
889	array_needsize (signals, signalmax, w->signum, signals_init);	1746	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
890	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1747	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
891		1748
892	if (!w->next)	1749	if (!((WL)w)->next)
893	{	1750	{
		1751	#if _WIN32
		1752	signal (w->signum, sighandler);
		1753	#else
894	struct sigaction sa;	1754	struct sigaction sa;
895	sa.sa_handler = sighandler;	1755	sa.sa_handler = sighandler;
896	sigfillset (&sa.sa_mask);	1756	sigfillset (&sa.sa_mask);
897	sa.sa_flags = 0;	1757	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
898	sigaction (w->signum, &sa, 0);	1758	sigaction (w->signum, &sa, 0);
		1759	#endif
899	}	1760	}
900	}	1761	}
901		1762
902	void	1763	void
903	ev_signal_stop (struct ev_signal *w)	1764	ev_signal_stop (EV_P_ ev_signal *w)
904	{	1765	{
905	ev_clear_pending ((W)w);	1766	clear_pending (EV_A_ (W)w);
906	if (!ev_is_active (w))	1767	if (expect_false (!ev_is_active (w)))
907	return;	1768	return;
908		1769
909	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1770	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
910	ev_stop ((W)w);	1771	ev_stop (EV_A_ (W)w);
911		1772
912	if (!signals [w->signum - 1].head)	1773	if (!signals [w->signum - 1].head)
913	signal (w->signum, SIG_DFL);	1774	signal (w->signum, SIG_DFL);
914	}	1775	}
915		1776
916	void	1777	void
917	ev_idle_start (struct ev_idle *w)	1778	ev_child_start (EV_P_ ev_child *w)
918	{	1779	{
		1780	#if EV_MULTIPLICITY
		1781	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1782	#endif
919	if (ev_is_active (w))	1783	if (expect_false (ev_is_active (w)))
920	return;	1784	return;
921		1785
922	ev_start ((W)w, ++idlecnt);	1786	ev_start (EV_A_ (W)w, 1);
923	array_needsize (idles, idlemax, idlecnt, );	1787	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
924	idles [idlecnt - 1] = w;
925	}	1788	}
926		1789
927	void	1790	void
928	ev_idle_stop (struct ev_idle *w)	1791	ev_child_stop (EV_P_ ev_child *w)
929	{	1792	{
930	ev_clear_pending ((W)w);	1793	clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1794	if (expect_false (!ev_is_active (w)))
932	return;	1795	return;
933		1796
934	idles [w->active - 1] = idles [--idlecnt];	1797	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
935	ev_stop ((W)w);	1798	ev_stop (EV_A_ (W)w);
936	}	1799	}
937		1800
		1801	#if EV_STAT_ENABLE
		1802
		1803	# ifdef _WIN32
		1804	# undef lstat
		1805	# define lstat(a,b) _stati64 (a,b)
		1806	# endif
		1807
		1808	#define DEF_STAT_INTERVAL 5.0074891
		1809	#define MIN_STAT_INTERVAL 0.1074891
		1810
		1811	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1812
		1813	#if EV_USE_INOTIFY
		1814	# define EV_INOTIFY_BUFSIZE 8192
		1815
		1816	static void noinline
		1817	infy_add (EV_P_ ev_stat *w)
		1818	{
		1819	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);
		1820
		1821	if (w->wd < 0)
		1822	{
		1823	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1824
		1825	/* monitor some parent directory for speedup hints */
		1826	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1827	{
		1828	char path [4096];
		1829	strcpy (path, w->path);
		1830
		1831	do
		1832	{
		1833	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1834	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1835
		1836	char *pend = strrchr (path, '/');
		1837
		1838	if (!pend)
		1839	break; /* whoops, no '/', complain to your admin */
		1840
		1841	*pend = 0;
		1842	w->wd = inotify_add_watch (fs_fd, path, mask);
		1843	}
		1844	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1845	}
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1849
		1850	if (w->wd >= 0)
		1851	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1852	}
		1853
		1854	static void noinline
		1855	infy_del (EV_P_ ev_stat *w)
		1856	{
		1857	int slot;
		1858	int wd = w->wd;
		1859
		1860	if (wd < 0)
		1861	return;
		1862
		1863	w->wd = -2;
		1864	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1865	wlist_del (&fs_hash [slot].head, (WL)w);
		1866
		1867	/* remove this watcher, if others are watching it, they will rearm */
		1868	inotify_rm_watch (fs_fd, wd);
		1869	}
		1870
		1871	static void noinline
		1872	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1873	{
		1874	if (slot < 0)
		1875	/* overflow, need to check for all hahs slots */
		1876	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1877	infy_wd (EV_A_ slot, wd, ev);
		1878	else
		1879	{
		1880	WL w_;
		1881
		1882	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us remove this watcher and all before it */
		1886
		1887	if (w->wd == wd || wd == -1)
		1888	{
		1889	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1890	{
		1891	w->wd = -1;
		1892	infy_add (EV_A_ w); /* re-add, no matter what */
		1893	}
		1894
		1895	stat_timer_cb (EV_A_ &w->timer, 0);
		1896	}
		1897	}
		1898	}
		1899	}
		1900
		1901	static void
		1902	infy_cb (EV_P_ ev_io *w, int revents)
		1903	{
		1904	char buf [EV_INOTIFY_BUFSIZE];
		1905	struct inotify_event *ev = (struct inotify_event *)buf;
		1906	int ofs;
		1907	int len = read (fs_fd, buf, sizeof (buf));
		1908
		1909	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1910	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1911	}
		1912
		1913	void inline_size
		1914	infy_init (EV_P)
		1915	{
		1916	if (fs_fd != -2)
		1917	return;
		1918
		1919	fs_fd = inotify_init ();
		1920
		1921	if (fs_fd >= 0)
		1922	{
		1923	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1924	ev_set_priority (&fs_w, EV_MAXPRI);
		1925	ev_io_start (EV_A_ &fs_w);
		1926	}
		1927	}
		1928
		1929	void inline_size
		1930	infy_fork (EV_P)
		1931	{
		1932	int slot;
		1933
		1934	if (fs_fd < 0)
		1935	return;
		1936
		1937	close (fs_fd);
		1938	fs_fd = inotify_init ();
		1939
		1940	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1941	{
		1942	WL w_ = fs_hash [slot].head;
		1943	fs_hash [slot].head = 0;
		1944
		1945	while (w_)
		1946	{
		1947	ev_stat *w = (ev_stat *)w_;
		1948	w_ = w_->next; /* lets us add this watcher */
		1949
		1950	w->wd = -1;
		1951
		1952	if (fs_fd >= 0)
		1953	infy_add (EV_A_ w); /* re-add, no matter what */
		1954	else
		1955	ev_timer_start (EV_A_ &w->timer);
		1956	}
		1957
		1958	}
		1959	}
		1960
		1961	#endif
		1962
938	void	1963	void
		1964	ev_stat_stat (EV_P_ ev_stat *w)
		1965	{
		1966	if (lstat (w->path, &w->attr) < 0)
		1967	w->attr.st_nlink = 0;
		1968	else if (!w->attr.st_nlink)
		1969	w->attr.st_nlink = 1;
		1970	}
		1971
		1972	static void noinline
		1973	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1974	{
		1975	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1976
		1977	/* we copy this here each the time so that */
		1978	/* prev has the old value when the callback gets invoked */
		1979	w->prev = w->attr;
		1980	ev_stat_stat (EV_A_ w);
		1981
		1982	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1983	if (
		1984	w->prev.st_dev != w->attr.st_dev
		1985	|| w->prev.st_ino != w->attr.st_ino
		1986	|| w->prev.st_mode != w->attr.st_mode
		1987	|| w->prev.st_nlink != w->attr.st_nlink
		1988	|| w->prev.st_uid != w->attr.st_uid
		1989	|| w->prev.st_gid != w->attr.st_gid
		1990	|| w->prev.st_rdev != w->attr.st_rdev
		1991	|| w->prev.st_size != w->attr.st_size
		1992	|| w->prev.st_atime != w->attr.st_atime
		1993	|| w->prev.st_mtime != w->attr.st_mtime
		1994	|| w->prev.st_ctime != w->attr.st_ctime
		1995	) {
		1996	#if EV_USE_INOTIFY
		1997	infy_del (EV_A_ w);
		1998	infy_add (EV_A_ w);
		1999	ev_stat_stat (EV_A_ w); /* avoid race... */
		2000	#endif
		2001
		2002	ev_feed_event (EV_A_ w, EV_STAT);
		2003	}
		2004	}
		2005
		2006	void
		2007	ev_stat_start (EV_P_ ev_stat *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	/* since we use memcmp, we need to clear any padding data etc. */
		2013	memset (&w->prev, 0, sizeof (ev_statdata));
		2014	memset (&w->attr, 0, sizeof (ev_statdata));
		2015
		2016	ev_stat_stat (EV_A_ w);
		2017
		2018	if (w->interval < MIN_STAT_INTERVAL)
		2019	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2020
		2021	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2022	ev_set_priority (&w->timer, ev_priority (w));
		2023
		2024	#if EV_USE_INOTIFY
		2025	infy_init (EV_A);
		2026
		2027	if (fs_fd >= 0)
		2028	infy_add (EV_A_ w);
		2029	else
		2030	#endif
		2031	ev_timer_start (EV_A_ &w->timer);
		2032
		2033	ev_start (EV_A_ (W)w, 1);
		2034	}
		2035
		2036	void
		2037	ev_stat_stop (EV_P_ ev_stat *w)
		2038	{
		2039	clear_pending (EV_A_ (W)w);
		2040	if (expect_false (!ev_is_active (w)))
		2041	return;
		2042
		2043	#if EV_USE_INOTIFY
		2044	infy_del (EV_A_ w);
		2045	#endif
		2046	ev_timer_stop (EV_A_ &w->timer);
		2047
		2048	ev_stop (EV_A_ (W)w);
		2049	}
		2050	#endif
		2051
		2052	#if EV_IDLE_ENABLE
		2053	void
		2054	ev_idle_start (EV_P_ ev_idle *w)
		2055	{
		2056	if (expect_false (ev_is_active (w)))
		2057	return;
		2058
		2059	pri_adjust (EV_A_ (W)w);
		2060
		2061	{
		2062	int active = ++idlecnt [ABSPRI (w)];
		2063
		2064	++idleall;
		2065	ev_start (EV_A_ (W)w, active);
		2066
		2067	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2068	idles [ABSPRI (w)][active - 1] = w;
		2069	}
		2070	}
		2071
		2072	void
		2073	ev_idle_stop (EV_P_ ev_idle *w)
		2074	{
		2075	clear_pending (EV_A_ (W)w);
		2076	if (expect_false (!ev_is_active (w)))
		2077	return;
		2078
		2079	{
		2080	int active = ((W)w)->active;
		2081
		2082	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2083	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2084
		2085	ev_stop (EV_A_ (W)w);
		2086	--idleall;
		2087	}
		2088	}
		2089	#endif
		2090
		2091	void
939	ev_prepare_start (struct ev_prepare *w)	2092	ev_prepare_start (EV_P_ ev_prepare *w)
940	{	2093	{
941	if (ev_is_active (w))	2094	if (expect_false (ev_is_active (w)))
942	return;	2095	return;
943		2096
944	ev_start ((W)w, ++preparecnt);	2097	ev_start (EV_A_ (W)w, ++preparecnt);
945	array_needsize (prepares, preparemax, preparecnt, );	2098	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
946	prepares [preparecnt - 1] = w;	2099	prepares [preparecnt - 1] = w;
947	}	2100	}
948		2101
949	void	2102	void
950	ev_prepare_stop (struct ev_prepare *w)	2103	ev_prepare_stop (EV_P_ ev_prepare *w)
951	{	2104	{
952	ev_clear_pending ((W)w);	2105	clear_pending (EV_A_ (W)w);
953	if (ev_is_active (w))	2106	if (expect_false (!ev_is_active (w)))
954	return;	2107	return;
955		2108
		2109	{
		2110	int active = ((W)w)->active;
956	prepares [w->active - 1] = prepares [--preparecnt];	2111	prepares [active - 1] = prepares [--preparecnt];
		2112	((W)prepares [active - 1])->active = active;
		2113	}
		2114
957	ev_stop ((W)w);	2115	ev_stop (EV_A_ (W)w);
958	}	2116	}
959		2117
960	void	2118	void
961	ev_check_start (struct ev_check *w)	2119	ev_check_start (EV_P_ ev_check *w)
962	{	2120	{
963	if (ev_is_active (w))	2121	if (expect_false (ev_is_active (w)))
964	return;	2122	return;
965		2123
966	ev_start ((W)w, ++checkcnt);	2124	ev_start (EV_A_ (W)w, ++checkcnt);
967	array_needsize (checks, checkmax, checkcnt, );	2125	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
968	checks [checkcnt - 1] = w;	2126	checks [checkcnt - 1] = w;
969	}	2127	}
970		2128
971	void	2129	void
972	ev_check_stop (struct ev_check *w)	2130	ev_check_stop (EV_P_ ev_check *w)
973	{	2131	{
974	ev_clear_pending ((W)w);	2132	clear_pending (EV_A_ (W)w);
975	if (ev_is_active (w))	2133	if (expect_false (!ev_is_active (w)))
976	return;	2134	return;
977		2135
		2136	{
		2137	int active = ((W)w)->active;
978	checks [w->active - 1] = checks [--checkcnt];	2138	checks [active - 1] = checks [--checkcnt];
		2139	((W)checks [active - 1])->active = active;
		2140	}
		2141
979	ev_stop ((W)w);	2142	ev_stop (EV_A_ (W)w);
980	}	2143	}
981		2144
982	void	2145	#if EV_EMBED_ENABLE
983	ev_child_start (struct ev_child *w)	2146	void noinline
		2147	ev_embed_sweep (EV_P_ ev_embed *w)
984	{	2148	{
		2149	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2150	}
		2151
		2152	static void
		2153	embed_cb (EV_P_ ev_io *io, int revents)
		2154	{
		2155	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2156
985	if (ev_is_active (w))	2157	if (ev_cb (w))
986	return;	2158	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2159	else
		2160	ev_embed_sweep (loop, w);
		2161	}
987		2162
		2163	void
		2164	ev_embed_start (EV_P_ ev_embed *w)
		2165	{
		2166	if (expect_false (ev_is_active (w)))
		2167	return;
		2168
		2169	{
		2170	struct ev_loop *loop = w->loop;
		2171	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2172	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2173	}
		2174
		2175	ev_set_priority (&w->io, ev_priority (w));
		2176	ev_io_start (EV_A_ &w->io);
		2177
988	ev_start ((W)w, 1);	2178	ev_start (EV_A_ (W)w, 1);
989	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	}	2179	}
991		2180
992	void	2181	void
993	ev_child_stop (struct ev_child *w)	2182	ev_embed_stop (EV_P_ ev_embed *w)
994	{	2183	{
995	ev_clear_pending ((W)w);	2184	clear_pending (EV_A_ (W)w);
996	if (ev_is_active (w))	2185	if (expect_false (!ev_is_active (w)))
997	return;	2186	return;
998		2187
999	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2188	ev_io_stop (EV_A_ &w->io);
		2189
1000	ev_stop ((W)w);	2190	ev_stop (EV_A_ (W)w);
1001	}	2191	}
		2192	#endif
		2193
		2194	#if EV_FORK_ENABLE
		2195	void
		2196	ev_fork_start (EV_P_ ev_fork *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	ev_start (EV_A_ (W)w, ++forkcnt);
		2202	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2203	forks [forkcnt - 1] = w;
		2204	}
		2205
		2206	void
		2207	ev_fork_stop (EV_P_ ev_fork *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	{
		2214	int active = ((W)w)->active;
		2215	forks [active - 1] = forks [--forkcnt];
		2216	((W)forks [active - 1])->active = active;
		2217	}
		2218
		2219	ev_stop (EV_A_ (W)w);
		2220	}
		2221	#endif
1002		2222
1003	/*****************************************************************************/	2223	/*****************************************************************************/
1004		2224
1005	struct ev_once	2225	struct ev_once
1006	{	2226	{
1007	struct ev_io io;	2227	ev_io io;
1008	struct ev_timer to;	2228	ev_timer to;
1009	void (*cb)(int revents, void *arg);	2229	void (*cb)(int revents, void *arg);
1010	void *arg;	2230	void *arg;
1011	};	2231	};
1012		2232
1013	static void	2233	static void
1014	once_cb (struct ev_once *once, int revents)	2234	once_cb (EV_P_ struct ev_once *once, int revents)
1015	{	2235	{
1016	void (*cb)(int revents, void *arg) = once->cb;	2236	void (*cb)(int revents, void *arg) = once->cb;
1017	void *arg = once->arg;	2237	void *arg = once->arg;
1018		2238
1019	ev_io_stop (&once->io);	2239	ev_io_stop (EV_A_ &once->io);
1020	ev_timer_stop (&once->to);	2240	ev_timer_stop (EV_A_ &once->to);
1021	free (once);	2241	ev_free (once);
1022		2242
1023	cb (revents, arg);	2243	cb (revents, arg);
1024	}	2244	}
1025		2245
1026	static void	2246	static void
1027	once_cb_io (struct ev_io *w, int revents)	2247	once_cb_io (EV_P_ ev_io *w, int revents)
1028	{	2248	{
1029	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2249	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1030	}	2250	}
1031		2251
1032	static void	2252	static void
1033	once_cb_to (struct ev_timer *w, int revents)	2253	once_cb_to (EV_P_ ev_timer *w, int revents)
1034	{	2254	{
1035	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1036	}	2256	}
1037		2257
1038	void	2258	void
1039	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2259	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1040	{	2260	{
1041	struct ev_once *once = malloc (sizeof (struct ev_once));	2261	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1042		2262
1043	if (!once)	2263	if (expect_false (!once))
		2264	{
1044	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2265	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1045	else	2266	return;
1046	{	2267	}
		2268
1047	once->cb = cb;	2269	once->cb = cb;
1048	once->arg = arg;	2270	once->arg = arg;
1049		2271
1050	ev_watcher_init (&once->io, once_cb_io);	2272	ev_init (&once->io, once_cb_io);
1051	if (fd >= 0)	2273	if (fd >= 0)
1052	{	2274	{
1053	ev_io_set (&once->io, fd, events);	2275	ev_io_set (&once->io, fd, events);
1054	ev_io_start (&once->io);	2276	ev_io_start (EV_A_ &once->io);
1055	}	2277	}
1056		2278
1057	ev_watcher_init (&once->to, once_cb_to);	2279	ev_init (&once->to, once_cb_to);
1058	if (timeout >= 0.)	2280	if (timeout >= 0.)
1059	{	2281	{
1060	ev_timer_set (&once->to, timeout, 0.);	2282	ev_timer_set (&once->to, timeout, 0.);
1061	ev_timer_start (&once->to);	2283	ev_timer_start (EV_A_ &once->to);
1062	}
1063	}
1064	}
1065
1066	/*****************************************************************************/
1067
1068	#if 0
1069
1070	struct ev_io wio;
1071
1072	static void
1073	sin_cb (struct ev_io *w, int revents)
1074	{
1075	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1076	}
1077
1078	static void
1079	ocb (struct ev_timer *w, int revents)
1080	{
1081	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1082	ev_timer_stop (w);
1083	ev_timer_start (w);
1084	}
1085
1086	static void
1087	scb (struct ev_signal *w, int revents)
1088	{
1089	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1090	ev_io_stop (&wio);
1091	ev_io_start (&wio);
1092	}
1093
1094	static void
1095	gcb (struct ev_signal *w, int revents)
1096	{
1097	fprintf (stderr, "generic %x\n", revents);
1098
1099	}
1100
1101	int main (void)
1102	{
1103	ev_init (0);
1104
1105	ev_io_init (&wio, sin_cb, 0, EV_READ);
1106	ev_io_start (&wio);
1107
1108	struct ev_timer t[10000];
1109
1110	#if 0
1111	int i;
1112	for (i = 0; i < 10000; ++i)
1113	{	2284	}
1114	struct ev_timer *w = t + i;
1115	ev_watcher_init (w, ocb, i);
1116	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1117	ev_timer_start (w);
1118	if (drand48 () < 0.5)
1119	ev_timer_stop (w);
1120	}
1121	#endif
1122
1123	struct ev_timer t1;
1124	ev_timer_init (&t1, ocb, 5, 10);
1125	ev_timer_start (&t1);
1126
1127	struct ev_signal sig;
1128	ev_signal_init (&sig, scb, SIGQUIT);
1129	ev_signal_start (&sig);
1130
1131	struct ev_check cw;
1132	ev_check_init (&cw, gcb);
1133	ev_check_start (&cw);
1134
1135	struct ev_idle iw;
1136	ev_idle_init (&iw, gcb);
1137	ev_idle_start (&iw);
1138
1139	ev_loop (0);
1140
1141	return 0;
1142	}	2285	}
1143		2286
		2287	#ifdef __cplusplus
		2288	}
1144	#endif	2289	#endif
1145		2290
1146
1147
1148

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