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Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (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
27	* 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.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
31	#endif	55	#endif
32		56
33	#include <math.h>	57	#include <math.h>
34	#include <stdlib.h>	58	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	59	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	60	#include <stddef.h>
39		61
40	#include <stdio.h>	62	#include <stdio.h>
41		63
42	#include <assert.h>	64	#include <assert.h>
43	#include <errno.h>	65	#include <errno.h>
44	#include <sys/types.h>	66	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	67	#include <time.h>
48		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
49	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	80	#endif
54		81
55	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
57	#endif	84	#endif
58		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
59	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
61	#endif	92	#endif
62		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
		106	#endif
		107
		108	#ifndef EV_USE_REALTIME
		109	# define EV_USE_REALTIME 1
		110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
63	#ifndef CLOCK_REALTIME	119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	121	# define EV_USE_REALTIME 0
65	#endif	122	#endif
66	#ifndef EV_USE_REALTIME	123
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	124	/**/
68	#endif
69		125
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
74		130
75	#include "ev.h"	131	#include "ev.h"
		132
		133	#if __GNUC__ >= 3
		134	# define expect(expr,value) __builtin_expect ((expr),(value))
		135	# define inline inline
		136	#else
		137	# define expect(expr,value) (expr)
		138	# define inline static
		139	#endif
		140
		141	#define expect_false(expr) expect ((expr) != 0, 0)
		142	#define expect_true(expr) expect ((expr) != 0, 1)
		143
		144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
76		146
77	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
80		150
81	static ev_tstamp now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
82	ev_tstamp ev_now;
83	int ev_method;
84		152
85	static int have_monotonic; /* runtime */	153	#if WIN32
		154	/* note: the comment below could not be substantiated, but what would I care */
		155	/* MSDN says this is required to handle SIGFPE */
		156	volatile double SIGFPE_REQ = 0.0f;
86		157
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	158	static int
88	static void (*method_modify)(int fd, int oev, int nev);	159	ev_socketpair_tcp (int filedes [2])
89	static void (*method_poll)(ev_tstamp timeout);	160	{
		161	struct sockaddr_in addr = { 0 };
		162	int addr_size = sizeof (addr);
		163	SOCKET listener;
		164	SOCKET sock [2] = { -1, -1 };
		165
		166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
		167	return -1;
		168
		169	addr.sin_family = AF_INET;
		170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
		171	addr.sin_port = 0;
		172
		173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
		174	goto fail;
		175
		176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
		177	goto fail;
		178
		179	if (listen (listener, 1))
		180	goto fail;
		181
		182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
		183	goto fail;
		184
		185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
		186	goto fail;
		187
		188	if ((sock[1] = accept (listener, 0, 0)) < 0)
		189	goto fail;
		190
		191	closesocket (listener);
		192
		193	filedes [0] = sock [0];
		194	filedes [1] = sock [1];
		195
		196	return 0;
		197
		198	fail:
		199	closesocket (listener);
		200
		201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
		202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
		203
		204	return -1;
		205	}
		206
		207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
		208	#else
		209	# define ev_pipe(filedes) pipe (filedes)
		210	#endif
90		211
91	/*****************************************************************************/	212	/*****************************************************************************/
92		213
93	ev_tstamp	214	static void (*syserr_cb)(const char *msg);
		215
		216	void ev_set_syserr_cb (void (*cb)(const char *msg))
		217	{
		218	syserr_cb = cb;
		219	}
		220
		221	static void
		222	syserr (const char *msg)
		223	{
		224	if (!msg)
		225	msg = "(libev) system error";
		226
		227	if (syserr_cb)
		228	syserr_cb (msg);
		229	else
		230	{
		231	perror (msg);
		232	abort ();
		233	}
		234	}
		235
		236	static void *(*alloc)(void *ptr, long size);
		237
		238	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		239	{
		240	alloc = cb;
		241	}
		242
		243	static void *
		244	ev_realloc (void *ptr, long size)
		245	{
		246	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		247
		248	if (!ptr && size)
		249	{
		250	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		251	abort ();
		252	}
		253
		254	return ptr;
		255	}
		256
		257	#define ev_malloc(size) ev_realloc (0, (size))
		258	#define ev_free(ptr) ev_realloc ((ptr), 0)
		259
		260	/*****************************************************************************/
		261
		262	typedef struct
		263	{
		264	WL head;
		265	unsigned char events;
		266	unsigned char reify;
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	# define VAR(name,decl) decl;
		280	# include "ev_vars.h"
		281	};
		282	# undef VAR
		283	# include "ev_wrap.h"
		284
		285	#else
		286
		287	# define VAR(name,decl) static decl;
		288	# include "ev_vars.h"
		289	# undef VAR
		290
		291	#endif
		292
		293	/*****************************************************************************/
		294
		295	inline ev_tstamp
94	ev_time (void)	296	ev_time (void)
95	{	297	{
96	#if EV_USE_REALTIME	298	#if EV_USE_REALTIME
97	struct timespec ts;	299	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	300	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	304	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	305	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	306	#endif
105	}	307	}
106		308
107	static ev_tstamp	309	inline ev_tstamp
108	get_clock (void)	310	get_clock (void)
109	{	311	{
110	#if EV_USE_MONOTONIC	312	#if EV_USE_MONOTONIC
111	if (have_monotonic)	313	if (expect_true (have_monotonic))
112	{	314	{
113	struct timespec ts;	315	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	316	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	317	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	318	}
117	#endif	319	#endif
118		320
119	return ev_time ();	321	return ev_time ();
120	}	322	}
121		323
		324	ev_tstamp
		325	ev_now (EV_P)
		326	{
		327	return rt_now;
		328	}
		329
122	#define array_roundsize(base,n) ((n) | 4 & ~3)	330	#define array_roundsize(base,n) ((n) | 4 & ~3)
123		331
124	#define array_needsize(base,cur,cnt,init) \	332	#define array_needsize(base,cur,cnt,init) \
125	if ((cnt) > cur) \	333	if (expect_false ((cnt) > cur)) \
126	{ \	334	{ \
127	int newcnt = cur; \	335	int newcnt = cur; \
128	do \	336	do \
129	{ \	337	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	338	newcnt = array_roundsize (base, newcnt << 1); \
131	} \	339	} \
132	while ((cnt) > newcnt); \	340	while ((cnt) > newcnt); \
133	\	341	\
134	base = realloc (base, sizeof (*base) * (newcnt)); \	342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
135	init (base + cur, newcnt - cur); \	343	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	344	cur = newcnt; \
137	}	345	}
		346
		347	#define array_slim(stem) \
		348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		349	{ \
		350	stem ## max = array_roundsize (stem ## cnt >> 1); \
		351	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		353	}
		354
		355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		357	#define array_free_microshit(stem) \
		358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		359
		360	#define array_free(stem, idx) \
		361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		362
139	/*****************************************************************************/	363	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		364
150	static void	365	static void
151	anfds_init (ANFD *base, int count)	366	anfds_init (ANFD *base, int count)
152	{	367	{
153	while (count--)	368	while (count--)
154	{	369	{
155	base->head = 0;	370	base->head = 0;
156	base->events = EV_NONE;	371	base->events = EV_NONE;
		372	base->reify = 0;
		373
157	++base;	374	++base;
158	}	375	}
159	}	376	}
160		377
161	typedef struct
162	{
163	W w;
164	int events;
165	} ANPENDING;
166
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void	378	static void
171	event (W w, int events)	379	event (EV_P_ W w, int events)
172	{	380	{
		381	if (w->pending)
		382	{
		383	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		384	return;
		385	}
		386
173	w->pending = ++pendingcnt;	387	w->pending = ++pendingcnt [ABSPRI (w)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
175	pendings [pendingcnt - 1].w = w;	389	pendings [ABSPRI (w)][w->pending - 1].w = w;
176	pendings [pendingcnt - 1].events = events;	390	pendings [ABSPRI (w)][w->pending - 1].events = events;
177	}	391	}
178		392
179	static void	393	static void
180	queue_events (W *events, int eventcnt, int type)	394	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	395	{
182	int i;	396	int i;
183		397
184	for (i = 0; i < eventcnt; ++i)	398	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	399	event (EV_A_ events [i], type);
186	}	400	}
187		401
188	static void	402	static void
189	fd_event (int fd, int events)	403	fd_event (EV_P_ int fd, int events)
190	{	404	{
191	ANFD *anfd = anfds + fd;	405	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	406	struct ev_io *w;
193		407
194	for (w = anfd->head; w; w = w->next)	408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
195	{	409	{
196	int ev = w->events & events;	410	int ev = w->events & events;
197		411
198	if (ev)	412	if (ev)
199	event ((W)w, ev);	413	event (EV_A_ (W)w, ev);
200	}	414	}
201	}	415	}
202		416
203	/*****************************************************************************/	417	/*****************************************************************************/
204		418
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	419	static void
209	fd_reify (void)	420	fd_reify (EV_P)
210	{	421	{
211	int i;	422	int i;
212		423
213	for (i = 0; i < fdchangecnt; ++i)	424	for (i = 0; i < fdchangecnt; ++i)
214	{	425	{
…		…
216	ANFD *anfd = anfds + fd;	427	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	428	struct ev_io *w;
218		429
219	int events = 0;	430	int events = 0;
220		431
221	for (w = anfd->head; w; w = w->next)	432	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
222	events |= w->events;	433	events |= w->events;
223		434
224	anfd->events &= ~EV_REIFY;	435	anfd->reify = 0;
225		436
226	if (anfd->events != events)
227	{
228	method_modify (fd, anfd->events, events);	437	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	438	anfd->events = events;
230	}
231	}	439	}
232		440
233	fdchangecnt = 0;	441	fdchangecnt = 0;
234	}	442	}
235		443
236	static void	444	static void
237	fd_change (int fd)	445	fd_change (EV_P_ int fd)
238	{	446	{
239	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	447	if (anfds [fd].reify)
240	return;	448	return;
241		449
242	anfds [fd].events |= EV_REIFY;	450	anfds [fd].reify = 1;
243		451
244	++fdchangecnt;	452	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
246	fdchanges [fdchangecnt - 1] = fd;	454	fdchanges [fdchangecnt - 1] = fd;
247	}	455	}
248		456
		457	static void
		458	fd_kill (EV_P_ int fd)
		459	{
		460	struct ev_io *w;
		461
		462	while ((w = (struct ev_io *)anfds [fd].head))
		463	{
		464	ev_io_stop (EV_A_ w);
		465	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		466	}
		467	}
		468
		469	static int
		470	fd_valid (int fd)
		471	{
		472	#ifdef WIN32
		473	return !!win32_get_osfhandle (fd);
		474	#else
		475	return fcntl (fd, F_GETFD) != -1;
		476	#endif
		477	}
		478
249	/* called on EBADF to verify fds */	479	/* called on EBADF to verify fds */
250	static void	480	static void
251	fd_recheck (void)	481	fd_ebadf (EV_P)
252	{	482	{
253	int fd;	483	int fd;
254		484
255	for (fd = 0; fd < anfdmax; ++fd)	485	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	486	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	487	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	488	fd_kill (EV_A_ fd);
		489	}
		490
		491	/* called on ENOMEM in select/poll to kill some fds and retry */
		492	static void
		493	fd_enomem (EV_P)
		494	{
		495	int fd;
		496
		497	for (fd = anfdmax; fd--; )
		498	if (anfds [fd].events)
259	{	499	{
260	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	500	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	501	return;
262	}	502	}
		503	}
		504
		505	/* usually called after fork if method needs to re-arm all fds from scratch */
		506	static void
		507	fd_rearm_all (EV_P)
		508	{
		509	int fd;
		510
		511	/* this should be highly optimised to not do anything but set a flag */
		512	for (fd = 0; fd < anfdmax; ++fd)
		513	if (anfds [fd].events)
		514	{
		515	anfds [fd].events = 0;
		516	fd_change (EV_A_ fd);
		517	}
263	}	518	}
264		519
265	/*****************************************************************************/	520	/*****************************************************************************/
266		521
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	522	static void
274	upheap (WT *timers, int k)	523	upheap (WT *heap, int k)
275	{	524	{
276	WT w = timers [k];	525	WT w = heap [k];
277		526
278	while (k && timers [k >> 1]->at > w->at)	527	while (k && heap [k >> 1]->at > w->at)
279	{	528	{
280	timers [k] = timers [k >> 1];	529	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
282	k >>= 1;	531	k >>= 1;
283	}	532	}
284		533
285	timers [k] = w;	534	heap [k] = w;
286	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
287		536
288	}	537	}
289		538
290	static void	539	static void
291	downheap (WT *timers, int N, int k)	540	downheap (WT *heap, int N, int k)
292	{	541	{
293	WT w = timers [k];	542	WT w = heap [k];
294		543
295	while (k < (N >> 1))	544	while (k < (N >> 1))
296	{	545	{
297	int j = k << 1;	546	int j = k << 1;
298		547
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	548	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	549	++j;
301		550
302	if (w->at <= timers [j]->at)	551	if (w->at <= heap [j]->at)
303	break;	552	break;
304		553
305	timers [k] = timers [j];	554	heap [k] = heap [j];
306	timers [k]->active = k + 1;	555	((W)heap [k])->active = k + 1;
307	k = j;	556	k = j;
308	}	557	}
309		558
310	timers [k] = w;	559	heap [k] = w;
311	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
312	}	561	}
313		562
314	/*****************************************************************************/	563	/*****************************************************************************/
315		564
316	typedef struct	565	typedef struct
317	{	566	{
318	struct ev_signal *head;	567	WL head;
319	sig_atomic_t gotsig;	568	sig_atomic_t volatile gotsig;
320	} ANSIG;	569	} ANSIG;
321		570
322	static ANSIG *signals;	571	static ANSIG *signals;
323	static int signalmax;	572	static int signalmax;
324		573
325	static int sigpipe [2];	574	static int sigpipe [2];
326	static sig_atomic_t gotsig;	575	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	576	static struct ev_io sigev;
328		577
329	static void	578	static void
330	signals_init (ANSIG *base, int count)	579	signals_init (ANSIG *base, int count)
331	{	580	{
332	while (count--)	581	while (count--)
333	{	582	{
334	base->head = 0;	583	base->head = 0;
335	base->gotsig = 0;	584	base->gotsig = 0;
		585
336	++base;	586	++base;
337	}	587	}
338	}	588	}
339		589
340	static void	590	static void
341	sighandler (int signum)	591	sighandler (int signum)
342	{	592	{
		593	#if WIN32
		594	signal (signum, sighandler);
		595	#endif
		596
343	signals [signum - 1].gotsig = 1;	597	signals [signum - 1].gotsig = 1;
344		598
345	if (!gotsig)	599	if (!gotsig)
346	{	600	{
		601	int old_errno = errno;
347	gotsig = 1;	602	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	603	write (sigpipe [1], &signum, 1);
		604	errno = old_errno;
349	}	605	}
350	}	606	}
351		607
352	static void	608	static void
353	sigcb (struct ev_io *iow, int revents)	609	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	610	{
355	struct ev_signal *w;	611	WL w;
356	int sig;	612	int signum;
357		613
		614	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	615	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		616
361	for (sig = signalmax; sig--; )	617	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	618	if (signals [signum].gotsig)
363	{	619	{
364	signals [sig].gotsig = 0;	620	signals [signum].gotsig = 0;
365		621
366	for (w = signals [sig].head; w; w = w->next)	622	for (w = signals [signum].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);	623	event (EV_A_ (W)w, EV_SIGNAL);
368	}	624	}
369	}	625	}
370		626
371	static void	627	static void
372	siginit (void)	628	siginit (EV_P)
373	{	629	{
		630	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		633
377	/* rather than sort out wether we really need nb, set it */	634	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		637	#endif
380		638
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	639	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	640	ev_io_start (EV_A_ &sigev);
		641	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	642	}
384		643
385	/*****************************************************************************/	644	/*****************************************************************************/
386		645
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];	646	static struct ev_child *childs [PID_HASHSIZE];
		647
		648	#ifndef WIN32
		649
399	static struct ev_signal childev;	650	static struct ev_signal childev;
400		651
401	#ifndef WCONTINUED	652	#ifndef WCONTINUED
402	# define WCONTINUED 0	653	# define WCONTINUED 0
403	#endif	654	#endif
404		655
405	static void	656	static void
406	childcb (struct ev_signal *sw, int revents)	657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	658	{
408	struct ev_child *w;	659	struct ev_child *w;
		660
		661	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		662	if (w->pid == pid || !w->pid)
		663	{
		664	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		665	w->rpid = pid;
		666	w->rstatus = status;
		667	event (EV_A_ (W)w, EV_CHILD);
		668	}
		669	}
		670
		671	static void
		672	childcb (EV_P_ struct ev_signal *sw, int revents)
		673	{
409	int pid, status;	674	int pid, status;
410		675
411	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	677	{
413	if (w->pid == pid || w->pid == -1)	678	/* make sure we are called again until all childs have been reaped */
414	{	679	event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	680
416	event ((W)w, EV_CHILD);	681	child_reap (EV_A_ sw, pid, pid, status);
417	}	682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		683	}
418	}	684	}
		685
		686	#endif
419		687
420	/*****************************************************************************/	688	/*****************************************************************************/
421		689
		690	#if EV_USE_KQUEUE
		691	# include "ev_kqueue.c"
		692	#endif
422	#if EV_USE_EPOLL	693	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	694	# include "ev_epoll.c"
424	#endif	695	#endif
		696	#if EV_USE_POLL
		697	# include "ev_poll.c"
		698	#endif
425	#if EV_USE_SELECT	699	#if EV_USE_SELECT
426	# include "ev_select.c"	700	# include "ev_select.c"
427	#endif	701	#endif
428		702
429	int	703	int
…		…
436	ev_version_minor (void)	710	ev_version_minor (void)
437	{	711	{
438	return EV_VERSION_MINOR;	712	return EV_VERSION_MINOR;
439	}	713	}
440		714
441	int ev_init (int flags)	715	/* return true if we are running with elevated privileges and should ignore env variables */
		716	static int
		717	enable_secure (void)
442	{	718	{
		719	#ifdef WIN32
		720	return 0;
		721	#else
		722	return getuid () != geteuid ()
		723	|| getgid () != getegid ();
		724	#endif
		725	}
		726
		727	int
		728	ev_method (EV_P)
		729	{
		730	return method;
		731	}
		732
		733	static void
		734	loop_init (EV_P_ int methods)
		735	{
443	if (!ev_method)	736	if (!method)
444	{	737	{
445	#if EV_USE_MONOTONIC	738	#if EV_USE_MONOTONIC
446	{	739	{
447	struct timespec ts;	740	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	742	have_monotonic = 1;
450	}	743	}
451	#endif	744	#endif
452		745
453	ev_now = ev_time ();	746	rt_now = ev_time ();
454	now = get_clock ();	747	mn_now = get_clock ();
		748	now_floor = mn_now;
455	diff = ev_now - now;	749	rtmn_diff = rt_now - mn_now;
456		750
457	if (pipe (sigpipe))	751	if (methods == EVMETHOD_AUTO)
458	return 0;	752	if (!enable_secure () && getenv ("LIBEV_METHODS"))
459		753	methods = atoi (getenv ("LIBEV_METHODS"));
		754	else
460	ev_method = EVMETHOD_NONE;	755	methods = EVMETHOD_ANY;
		756
		757	method = 0;
		758	#if EV_USE_WIN32
		759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		760	#endif
		761	#if EV_USE_KQUEUE
		762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		763	#endif
461	#if EV_USE_EPOLL	764	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		766	#endif
		767	#if EV_USE_POLL
		768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
463	#endif	769	#endif
464	#if EV_USE_SELECT	770	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	772	#endif
467		773
		774	ev_watcher_init (&sigev, sigcb);
		775	ev_set_priority (&sigev, EV_MAXPRI);
		776	}
		777	}
		778
		779	void
		780	loop_destroy (EV_P)
		781	{
		782	int i;
		783
		784	#if EV_USE_WIN32
		785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		786	#endif
		787	#if EV_USE_KQUEUE
		788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		789	#endif
		790	#if EV_USE_EPOLL
		791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		792	#endif
		793	#if EV_USE_POLL
		794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		795	#endif
		796	#if EV_USE_SELECT
		797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		798	#endif
		799
		800	for (i = NUMPRI; i--; )
		801	array_free (pending, [i]);
		802
		803	/* have to use the microsoft-never-gets-it-right macro */
		804	array_free_microshit (fdchange);
		805	array_free_microshit (timer);
		806	array_free_microshit (periodic);
		807	array_free_microshit (idle);
		808	array_free_microshit (prepare);
		809	array_free_microshit (check);
		810
		811	method = 0;
		812	}
		813
		814	static void
		815	loop_fork (EV_P)
		816	{
		817	#if EV_USE_EPOLL
		818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		819	#endif
		820	#if EV_USE_KQUEUE
		821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		822	#endif
		823
		824	if (ev_is_active (&sigev))
		825	{
		826	/* default loop */
		827
		828	ev_ref (EV_A);
		829	ev_io_stop (EV_A_ &sigev);
		830	close (sigpipe [0]);
		831	close (sigpipe [1]);
		832
		833	while (ev_pipe (sigpipe))
		834	syserr ("(libev) error creating pipe");
		835
		836	siginit (EV_A);
		837	}
		838
		839	postfork = 0;
		840	}
		841
		842	#if EV_MULTIPLICITY
		843	struct ev_loop *
		844	ev_loop_new (int methods)
		845	{
		846	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		847
		848	memset (loop, 0, sizeof (struct ev_loop));
		849
		850	loop_init (EV_A_ methods);
		851
		852	if (ev_method (EV_A))
		853	return loop;
		854
		855	return 0;
		856	}
		857
		858	void
		859	ev_loop_destroy (EV_P)
		860	{
		861	loop_destroy (EV_A);
		862	ev_free (loop);
		863	}
		864
		865	void
		866	ev_loop_fork (EV_P)
		867	{
		868	postfork = 1;
		869	}
		870
		871	#endif
		872
		873	#if EV_MULTIPLICITY
		874	struct ev_loop default_loop_struct;
		875	static struct ev_loop *default_loop;
		876
		877	struct ev_loop *
		878	#else
		879	static int default_loop;
		880
		881	int
		882	#endif
		883	ev_default_loop (int methods)
		884	{
		885	if (sigpipe [0] == sigpipe [1])
		886	if (ev_pipe (sigpipe))
		887	return 0;
		888
		889	if (!default_loop)
		890	{
		891	#if EV_MULTIPLICITY
		892	struct ev_loop *loop = default_loop = &default_loop_struct;
		893	#else
		894	default_loop = 1;
		895	#endif
		896
		897	loop_init (EV_A_ methods);
		898
468	if (ev_method)	899	if (ev_method (EV_A))
469	{	900	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	901	siginit (EV_A);
472		902
		903	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	904	ev_signal_init (&childev, childcb, SIGCHLD);
		905	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	906	ev_signal_start (EV_A_ &childev);
		907	ev_unref (EV_A); /* child watcher should not keep loop alive */
		908	#endif
475	}	909	}
		910	else
		911	default_loop = 0;
476	}	912	}
477		913
478	return ev_method;	914	return default_loop;
		915	}
		916
		917	void
		918	ev_default_destroy (void)
		919	{
		920	#if EV_MULTIPLICITY
		921	struct ev_loop *loop = default_loop;
		922	#endif
		923
		924	#ifndef WIN32
		925	ev_ref (EV_A); /* child watcher */
		926	ev_signal_stop (EV_A_ &childev);
		927	#endif
		928
		929	ev_ref (EV_A); /* signal watcher */
		930	ev_io_stop (EV_A_ &sigev);
		931
		932	close (sigpipe [0]); sigpipe [0] = 0;
		933	close (sigpipe [1]); sigpipe [1] = 0;
		934
		935	loop_destroy (EV_A);
		936	}
		937
		938	void
		939	ev_default_fork (void)
		940	{
		941	#if EV_MULTIPLICITY
		942	struct ev_loop *loop = default_loop;
		943	#endif
		944
		945	if (method)
		946	postfork = 1;
479	}	947	}
480		948
481	/*****************************************************************************/	949	/*****************************************************************************/
482		950
483	void
484	ev_prefork (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_parent (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}
509
510	/*****************************************************************************/
511
512	static void	951	static void
513	call_pending (void)	952	call_pending (EV_P)
514	{	953	{
		954	int pri;
		955
		956	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	957	while (pendingcnt [pri])
516	{	958	{
517	ANPENDING *p = pendings + --pendingcnt;	959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		960
519	if (p->w)	961	if (p->w)
520	{	962	{
521	p->w->pending = 0;	963	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	964	p->w->cb (EV_A_ p->w, p->events);
523	}	965	}
524	}	966	}
525	}	967	}
526		968
527	static void	969	static void
528	timers_reify (void)	970	timers_reify (EV_P)
529	{	971	{
530	while (timercnt && timers [0]->at <= now)	972	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	973	{
532	struct ev_timer *w = timers [0];	974	struct ev_timer *w = timers [0];
		975
		976	assert (("inactive timer on timer heap detected", ev_is_active (w)));
533		977
534	/* first reschedule or stop timer */	978	/* first reschedule or stop timer */
535	if (w->repeat)	979	if (w->repeat)
536	{	980	{
		981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
537	w->at = now + w->repeat;	982	((WT)w)->at = mn_now + w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));
539	downheap ((WT *)timers, timercnt, 0);	983	downheap ((WT *)timers, timercnt, 0);
540	}	984	}
541	else	985	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		987
544	event ((W)w, EV_TIMEOUT);	988	event (EV_A_ (W)w, EV_TIMEOUT);
545	}	989	}
546	}	990	}
547		991
548	static void	992	static void
549	periodics_reify (void)	993	periodics_reify (EV_P)
550	{	994	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
552	{	996	{
553	struct ev_periodic *w = periodics [0];	997	struct ev_periodic *w = periodics [0];
		998
		999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
554		1000
555	/* first reschedule or stop timer */	1001	/* first reschedule or stop timer */
556	if (w->interval)	1002	if (w->interval)
557	{	1003	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	1006	downheap ((WT *)periodics, periodiccnt, 0);
561	}	1007	}
562	else	1008	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		1010
565	event ((W)w, EV_TIMEOUT);	1011	event (EV_A_ (W)w, EV_PERIODIC);
566	}	1012	}
567	}	1013	}
568		1014
569	static void	1015	static void
570	periodics_reschedule (ev_tstamp diff)	1016	periodics_reschedule (EV_P)
571	{	1017	{
572	int i;	1018	int i;
573		1019
574	/* adjust periodics after time jump */	1020	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	1021	for (i = 0; i < periodiccnt; ++i)
576	{	1022	{
577	struct ev_periodic *w = periodics [i];	1023	struct ev_periodic *w = periodics [i];
578		1024
579	if (w->interval)	1025	if (w->interval)
580	{	1026	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
582		1028
583	if (fabs (diff) >= 1e-4)	1029	if (fabs (diff) >= 1e-4)
584	{	1030	{
585	ev_periodic_stop (w);	1031	ev_periodic_stop (EV_A_ w);
586	ev_periodic_start (w);	1032	ev_periodic_start (EV_A_ w);
587		1033
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
589	}	1035	}
590	}	1036	}
591	}	1037	}
592	}	1038	}
593		1039
		1040	inline int
		1041	time_update_monotonic (EV_P)
		1042	{
		1043	mn_now = get_clock ();
		1044
		1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1046	{
		1047	rt_now = rtmn_diff + mn_now;
		1048	return 0;
		1049	}
		1050	else
		1051	{
		1052	now_floor = mn_now;
		1053	rt_now = ev_time ();
		1054	return 1;
		1055	}
		1056	}
		1057
594	static void	1058	static void
595	time_update (void)	1059	time_update (EV_P)
596	{	1060	{
597	int i;	1061	int i;
598		1062
599	ev_now = ev_time ();	1063	#if EV_USE_MONOTONIC
600
601	if (have_monotonic)	1064	if (expect_true (have_monotonic))
602	{	1065	{
603	ev_tstamp odiff = diff;	1066	if (time_update_monotonic (EV_A))
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1067	{
607	now = get_clock ();	1068	ev_tstamp odiff = rtmn_diff;
		1069
		1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		1071	{
608	diff = ev_now - now;	1072	rtmn_diff = rt_now - mn_now;
609		1073
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
611	return; /* all is well */	1075	return; /* all is well */
612		1076
613	ev_now = ev_time ();	1077	rt_now = ev_time ();
		1078	mn_now = get_clock ();
		1079	now_floor = mn_now;
		1080	}
		1081
		1082	periodics_reschedule (EV_A);
		1083	/* no timer adjustment, as the monotonic clock doesn't jump */
		1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
614	}	1085	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}	1086	}
619	else	1087	else
		1088	#endif
620	{	1089	{
621	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1090	rt_now = ev_time ();
		1091
		1092	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
622	{	1093	{
623	periodics_reschedule (ev_now - now);	1094	periodics_reschedule (EV_A);
624		1095
625	/* adjust timers. this is easy, as the offset is the same for all */	1096	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	1097	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	1098	((WT)timers [i])->at += rt_now - mn_now;
628	}	1099	}
629		1100
630	now = ev_now;	1101	mn_now = rt_now;
631	}	1102	}
632	}	1103	}
633		1104
634	int ev_loop_done;	1105	void
		1106	ev_ref (EV_P)
		1107	{
		1108	++activecnt;
		1109	}
635		1110
		1111	void
		1112	ev_unref (EV_P)
		1113	{
		1114	--activecnt;
		1115	}
		1116
		1117	static int loop_done;
		1118
		1119	void
636	void ev_loop (int flags)	1120	ev_loop (EV_P_ int flags)
637	{	1121	{
638	double block;	1122	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
640		1124
641	do	1125	do
642	{	1126	{
643	/* queue check watchers (and execute them) */	1127	/* queue check watchers (and execute them) */
644	if (preparecnt)	1128	if (expect_false (preparecnt))
645	{	1129	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	1131	call_pending (EV_A);
648	}	1132	}
649		1133
		1134	/* we might have forked, so reify kernel state if necessary */
		1135	if (expect_false (postfork))
		1136	loop_fork (EV_A);
		1137
650	/* update fd-related kernel structures */	1138	/* update fd-related kernel structures */
651	fd_reify ();	1139	fd_reify (EV_A);
652		1140
653	/* calculate blocking time */	1141	/* calculate blocking time */
654		1142
655	/* we only need this for !monotonic clockor timers, but as we basically	1143	/* we only need this for !monotonic clockor timers, but as we basically
656	always have timers, we just calculate it always */	1144	always have timers, we just calculate it always */
		1145	#if EV_USE_MONOTONIC
		1146	if (expect_true (have_monotonic))
		1147	time_update_monotonic (EV_A);
		1148	else
		1149	#endif
		1150	{
657	ev_now = ev_time ();	1151	rt_now = ev_time ();
		1152	mn_now = rt_now;
		1153	}
658		1154
659	if (flags & EVLOOP_NONBLOCK || idlecnt)	1155	if (flags & EVLOOP_NONBLOCK || idlecnt)
660	block = 0.;	1156	block = 0.;
661	else	1157	else
662	{	1158	{
663	block = MAX_BLOCKTIME;	1159	block = MAX_BLOCKTIME;
664		1160
665	if (timercnt)	1161	if (timercnt)
666	{	1162	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
668	if (block > to) block = to;	1164	if (block > to) block = to;
669	}	1165	}
670		1166
671	if (periodiccnt)	1167	if (periodiccnt)
672	{	1168	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
674	if (block > to) block = to;	1170	if (block > to) block = to;
675	}	1171	}
676		1172
677	if (block < 0.) block = 0.;	1173	if (block < 0.) block = 0.;
678	}	1174	}
679		1175
680	method_poll (block);	1176	method_poll (EV_A_ block);
681		1177
682	/* update ev_now, do magic */	1178	/* update rt_now, do magic */
683	time_update ();	1179	time_update (EV_A);
684		1180
685	/* queue pending timers and reschedule them */	1181	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1182	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	1183	periodics_reify (EV_A); /* absolute timers called first */
688		1184
689	/* queue idle watchers unless io or timers are pending */	1185	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	1186	if (!pendingcnt)
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1188
693	/* queue check watchers, to be executed first */	1189	/* queue check watchers, to be executed first */
694	if (checkcnt)	1190	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1192
697	call_pending ();	1193	call_pending (EV_A);
698	}	1194	}
699	while (!ev_loop_done);	1195	while (activecnt && !loop_done);
700		1196
701	if (ev_loop_done != 2)	1197	if (loop_done != 2)
702	ev_loop_done = 0;	1198	loop_done = 0;
		1199	}
		1200
		1201	void
		1202	ev_unloop (EV_P_ int how)
		1203	{
		1204	loop_done = how;
703	}	1205	}
704		1206
705	/*****************************************************************************/	1207	/*****************************************************************************/
706		1208
707	static void	1209	inline void
708	wlist_add (WL *head, WL elem)	1210	wlist_add (WL *head, WL elem)
709	{	1211	{
710	elem->next = *head;	1212	elem->next = *head;
711	*head = elem;	1213	*head = elem;
712	}	1214	}
713		1215
714	static void	1216	inline void
715	wlist_del (WL *head, WL elem)	1217	wlist_del (WL *head, WL elem)
716	{	1218	{
717	while (*head)	1219	while (*head)
718	{	1220	{
719	if (*head == elem)	1221	if (*head == elem)
…		…
724		1226
725	head = &(*head)->next;	1227	head = &(*head)->next;
726	}	1228	}
727	}	1229	}
728		1230
729	static void	1231	inline void
730	ev_clear (W w)	1232	ev_clear_pending (EV_P_ W w)
731	{	1233	{
732	if (w->pending)	1234	if (w->pending)
733	{	1235	{
734	pendings [w->pending - 1].w = 0;	1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1237	w->pending = 0;
736	}	1238	}
737	}	1239	}
738		1240
739	static void	1241	inline void
740	ev_start (W w, int active)	1242	ev_start (EV_P_ W w, int active)
741	{	1243	{
		1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1246
742	w->active = active;	1247	w->active = active;
		1248	ev_ref (EV_A);
743	}	1249	}
744		1250
745	static void	1251	inline void
746	ev_stop (W w)	1252	ev_stop (EV_P_ W w)
747	{	1253	{
		1254	ev_unref (EV_A);
748	w->active = 0;	1255	w->active = 0;
749	}	1256	}
750		1257
751	/*****************************************************************************/	1258	/*****************************************************************************/
752		1259
753	void	1260	void
754	ev_io_start (struct ev_io *w)	1261	ev_io_start (EV_P_ struct ev_io *w)
755	{	1262	{
		1263	int fd = w->fd;
		1264
756	if (ev_is_active (w))	1265	if (ev_is_active (w))
757	return;	1266	return;
758		1267
759	int fd = w->fd;	1268	assert (("ev_io_start called with negative fd", fd >= 0));
760		1269
761	ev_start ((W)w, 1);	1270	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1273
765	fd_change (fd);	1274	fd_change (EV_A_ fd);
766	}	1275	}
767		1276
768	void	1277	void
769	ev_io_stop (struct ev_io *w)	1278	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1279	{
771	ev_clear ((W)w);	1280	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1281	if (!ev_is_active (w))
773	return;	1282	return;
774		1283
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1285	ev_stop (EV_A_ (W)w);
777		1286
778	fd_change (w->fd);	1287	fd_change (EV_A_ w->fd);
779	}	1288	}
780		1289
781	void	1290	void
782	ev_timer_start (struct ev_timer *w)	1291	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1292	{
784	if (ev_is_active (w))	1293	if (ev_is_active (w))
785	return;	1294	return;
786		1295
787	w->at += now;	1296	((WT)w)->at += mn_now;
788		1297
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1299
791	ev_start ((W)w, ++timercnt);	1300	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1301	array_needsize (timers, timermax, timercnt, (void));
793	timers [timercnt - 1] = w;	1302	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1303	upheap ((WT *)timers, timercnt - 1);
795	}
796		1304
		1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1306	}
		1307
797	void	1308	void
798	ev_timer_stop (struct ev_timer *w)	1309	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1310	{
800	ev_clear ((W)w);	1311	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1312	if (!ev_is_active (w))
802	return;	1313	return;
803		1314
		1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1316
804	if (w->active < timercnt--)	1317	if (((W)w)->active < timercnt--)
805	{	1318	{
806	timers [w->active - 1] = timers [timercnt];	1319	timers [((W)w)->active - 1] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
808	}	1321	}
809		1322
810	w->at = w->repeat;	1323	((WT)w)->at = w->repeat;
811		1324
812	ev_stop ((W)w);	1325	ev_stop (EV_A_ (W)w);
813	}	1326	}
814		1327
815	void	1328	void
816	ev_timer_again (struct ev_timer *w)	1329	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1330	{
818	if (ev_is_active (w))	1331	if (ev_is_active (w))
819	{	1332	{
820	if (w->repeat)	1333	if (w->repeat)
821	{	1334	{
822	w->at = now + w->repeat;	1335	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1337	}
825	else	1338	else
826	ev_timer_stop (w);	1339	ev_timer_stop (EV_A_ w);
827	}	1340	}
828	else if (w->repeat)	1341	else if (w->repeat)
829	ev_timer_start (w);	1342	ev_timer_start (EV_A_ w);
830	}	1343	}
831		1344
832	void	1345	void
833	ev_periodic_start (struct ev_periodic *w)	1346	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1347	{
835	if (ev_is_active (w))	1348	if (ev_is_active (w))
836	return;	1349	return;
837		1350
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
839		1352
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1353	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)	1354	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
843		1356
844	ev_start ((W)w, ++periodiccnt);	1357	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1358	array_needsize (periodics, periodicmax, periodiccnt, (void));
846	periodics [periodiccnt - 1] = w;	1359	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1360	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1361
		1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1363	}
		1364
850	void	1365	void
851	ev_periodic_stop (struct ev_periodic *w)	1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1367	{
853	ev_clear ((W)w);	1368	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1369	if (!ev_is_active (w))
855	return;	1370	return;
856		1371
		1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1373
857	if (w->active < periodiccnt--)	1374	if (((W)w)->active < periodiccnt--)
858	{	1375	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
861	}	1378	}
862		1379
863	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
864	}	1381	}
865		1382
866	void	1383	void
867	ev_signal_start (struct ev_signal *w)	1384	ev_idle_start (EV_P_ struct ev_idle *w)
868	{	1385	{
869	if (ev_is_active (w))	1386	if (ev_is_active (w))
870	return;	1387	return;
871		1388
		1389	ev_start (EV_A_ (W)w, ++idlecnt);
		1390	array_needsize (idles, idlemax, idlecnt, (void));
		1391	idles [idlecnt - 1] = w;
		1392	}
		1393
		1394	void
		1395	ev_idle_stop (EV_P_ struct ev_idle *w)
		1396	{
		1397	ev_clear_pending (EV_A_ (W)w);
		1398	if (ev_is_active (w))
		1399	return;
		1400
		1401	idles [((W)w)->active - 1] = idles [--idlecnt];
		1402	ev_stop (EV_A_ (W)w);
		1403	}
		1404
		1405	void
		1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1407	{
		1408	if (ev_is_active (w))
		1409	return;
		1410
		1411	ev_start (EV_A_ (W)w, ++preparecnt);
		1412	array_needsize (prepares, preparemax, preparecnt, (void));
		1413	prepares [preparecnt - 1] = w;
		1414	}
		1415
		1416	void
		1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1418	{
		1419	ev_clear_pending (EV_A_ (W)w);
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1424	ev_stop (EV_A_ (W)w);
		1425	}
		1426
		1427	void
		1428	ev_check_start (EV_P_ struct ev_check *w)
		1429	{
		1430	if (ev_is_active (w))
		1431	return;
		1432
		1433	ev_start (EV_A_ (W)w, ++checkcnt);
		1434	array_needsize (checks, checkmax, checkcnt, (void));
		1435	checks [checkcnt - 1] = w;
		1436	}
		1437
		1438	void
		1439	ev_check_stop (EV_P_ struct ev_check *w)
		1440	{
		1441	ev_clear_pending (EV_A_ (W)w);
		1442	if (ev_is_active (w))
		1443	return;
		1444
		1445	checks [((W)w)->active - 1] = checks [--checkcnt];
		1446	ev_stop (EV_A_ (W)w);
		1447	}
		1448
		1449	#ifndef SA_RESTART
		1450	# define SA_RESTART 0
		1451	#endif
		1452
		1453	void
		1454	ev_signal_start (EV_P_ struct ev_signal *w)
		1455	{
		1456	#if EV_MULTIPLICITY
		1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1458	#endif
		1459	if (ev_is_active (w))
		1460	return;
		1461
		1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1463
872	ev_start ((W)w, 1);	1464	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1465	array_needsize (signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1467
876	if (!w->next)	1468	if (!((WL)w)->next)
877	{	1469	{
		1470	#if WIN32
		1471	signal (w->signum, sighandler);
		1472	#else
878	struct sigaction sa;	1473	struct sigaction sa;
879	sa.sa_handler = sighandler;	1474	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1475	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1476	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1477	sigaction (w->signum, &sa, 0);
		1478	#endif
883	}	1479	}
884	}	1480	}
885		1481
886	void	1482	void
887	ev_signal_stop (struct ev_signal *w)	1483	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1484	{
889	ev_clear ((W)w);	1485	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1486	if (!ev_is_active (w))
891	return;	1487	return;
892		1488
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1490	ev_stop (EV_A_ (W)w);
895		1491
896	if (!signals [w->signum - 1].head)	1492	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1493	signal (w->signum, SIG_DFL);
898	}	1494	}
899		1495
900	void	1496	void
901	ev_idle_start (struct ev_idle *w)	1497	ev_child_start (EV_P_ struct ev_child *w)
902	{	1498	{
		1499	#if EV_MULTIPLICITY
		1500	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1501	#endif
903	if (ev_is_active (w))	1502	if (ev_is_active (w))
904	return;	1503	return;
905		1504
906	ev_start ((W)w, ++idlecnt);	1505	ev_start (EV_A_ (W)w, 1);
907	array_needsize (idles, idlemax, idlecnt, );	1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
908	idles [idlecnt - 1] = w;
909	}	1507	}
910		1508
911	void	1509	void
912	ev_idle_stop (struct ev_idle *w)	1510	ev_child_stop (EV_P_ struct ev_child *w)
913	{	1511	{
914	ev_clear ((W)w);	1512	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1513	if (ev_is_active (w))
916	return;	1514	return;
917		1515
918	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);
920	}
921
922	void
923	ev_prepare_start (struct ev_prepare *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;
931	}
932
933	void
934	ev_prepare_stop (struct ev_prepare *w)
935	{
936	ev_clear ((W)w);
937	if (ev_is_active (w))
938	return;
939
940	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);
942	}
943
944	void
945	ev_check_start (struct ev_check *w)
946	{
947	if (ev_is_active (w))
948	return;
949
950	ev_start ((W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;
953	}
954
955	void
956	ev_check_stop (struct ev_check *w)
957	{
958	ev_clear ((W)w);
959	if (ev_is_active (w))
960	return;
961
962	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);
964	}
965
966	void
967	ev_child_start (struct ev_child *w)
968	{
969	if (ev_is_active (w))
970	return;
971
972	ev_start ((W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}
975
976	void
977	ev_child_stop (struct ev_child *w)
978	{
979	ev_clear ((W)w);
980	if (ev_is_active (w))
981	return;
982
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1517	ev_stop (EV_A_ (W)w);
985	}	1518	}
986		1519
987	/*****************************************************************************/	1520	/*****************************************************************************/
988		1521
989	struct ev_once	1522	struct ev_once
…		…
993	void (*cb)(int revents, void *arg);	1526	void (*cb)(int revents, void *arg);
994	void *arg;	1527	void *arg;
995	};	1528	};
996		1529
997	static void	1530	static void
998	once_cb (struct ev_once *once, int revents)	1531	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1532	{
1000	void (*cb)(int revents, void *arg) = once->cb;	1533	void (*cb)(int revents, void *arg) = once->cb;
1001	void *arg = once->arg;	1534	void *arg = once->arg;
1002		1535
1003	ev_io_stop (&once->io);	1536	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1537	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1538	ev_free (once);
1006		1539
1007	cb (revents, arg);	1540	cb (revents, arg);
1008	}	1541	}
1009		1542
1010	static void	1543	static void
1011	once_cb_io (struct ev_io *w, int revents)	1544	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1545	{
1013	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1546	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1014	}	1547	}
1015		1548
1016	static void	1549	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1551	{
1019	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1552	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1020	}	1553	}
1021		1554
1022	void	1555	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1024	{	1557	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1026		1559
1027	if (!once)	1560	if (!once)
1028	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1029	else	1562	else
1030	{	1563	{
…		…
1033		1566
1034	ev_watcher_init (&once->io, once_cb_io);	1567	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1568	if (fd >= 0)
1036	{	1569	{
1037	ev_io_set (&once->io, fd, events);	1570	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1571	ev_io_start (EV_A_ &once->io);
1039	}	1572	}
1040		1573
1041	ev_watcher_init (&once->to, once_cb_to);	1574	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1575	if (timeout >= 0.)
1043	{	1576	{
1044	ev_timer_set (&once->to, timeout, 0.);	1577	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1578	ev_timer_start (EV_A_ &once->to);
1046	}	1579	}
1047	}	1580	}
1048	}	1581	}
1049		1582
1050	/*****************************************************************************/
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif
1106
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}
1127
1128	#endif
1129
1130
1131
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