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Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 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
63	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	109	# define EV_USE_REALTIME 1
65	#endif	110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
		121	# define EV_USE_REALTIME 0
		122	#endif
		123
		124	/**/
66		125
67	#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) */
68	#define MAX_BLOCKTIME 59.731	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
69	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
70		130
71	#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)
72		146
73	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
76		150
77	static ev_tstamp now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
78	ev_tstamp ev_now;
79	int ev_method;
80		152
81	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;
82		157
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	158	static int
84	static void (*method_modify)(int fd, int oev, int nev);	159	ev_socketpair_tcp (int filedes [2])
85	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
86		211
87	/*****************************************************************************/	212	/*****************************************************************************/
88		213
89	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
90	ev_time (void)	296	ev_time (void)
91	{	297	{
92	#if EV_USE_REALTIME	298	#if EV_USE_REALTIME
93	struct timespec ts;	299	struct timespec ts;
94	clock_gettime (CLOCK_REALTIME, &ts);	300	clock_gettime (CLOCK_REALTIME, &ts);
…		…
98	gettimeofday (&tv, 0);	304	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	305	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	306	#endif
101	}	307	}
102		308
103	static ev_tstamp	309	inline ev_tstamp
104	get_clock (void)	310	get_clock (void)
105	{	311	{
106	#if EV_USE_MONOTONIC	312	#if EV_USE_MONOTONIC
107	if (have_monotonic)	313	if (expect_true (have_monotonic))
108	{	314	{
109	struct timespec ts;	315	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	316	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	317	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	318	}
113	#endif	319	#endif
114		320
115	return ev_time ();	321	return ev_time ();
116	}	322	}
117		323
		324	ev_tstamp
		325	ev_now (EV_P)
		326	{
		327	return rt_now;
		328	}
		329
118	#define array_roundsize(base,n) ((n) | 4 & ~3)	330	#define array_roundsize(base,n) ((n) | 4 & ~3)
119		331
120	#define array_needsize(base,cur,cnt,init) \	332	#define array_needsize(base,cur,cnt,init) \
121	if ((cnt) > cur) \	333	if (expect_false ((cnt) > cur)) \
122	{ \	334	{ \
123	int newcnt = cur; \	335	int newcnt = cur; \
124	do \	336	do \
125	{ \	337	{ \
126	newcnt = array_roundsize (base, newcnt << 1); \	338	newcnt = array_roundsize (base, newcnt << 1); \
127	} \	339	} \
128	while ((cnt) > newcnt); \	340	while ((cnt) > newcnt); \
129	\	341	\
130	base = realloc (base, sizeof (*base) * (newcnt)); \	342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
131	init (base + cur, newcnt - cur); \	343	init (base + cur, newcnt - cur); \
132	cur = newcnt; \	344	cur = newcnt; \
133	}	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;
134		362
135	/*****************************************************************************/	363	/*****************************************************************************/
136
137	typedef struct
138	{
139	struct ev_io *head;
140	int events;
141	} ANFD;
142
143	static ANFD *anfds;
144	static int anfdmax;
145		364
146	static void	365	static void
147	anfds_init (ANFD *base, int count)	366	anfds_init (ANFD *base, int count)
148	{	367	{
149	while (count--)	368	while (count--)
150	{	369	{
151	base->head = 0;	370	base->head = 0;
152	base->events = EV_NONE;	371	base->events = EV_NONE;
		372	base->reify = 0;
		373
153	++base;	374	++base;
154	}	375	}
155	}	376	}
156		377
157	typedef struct
158	{
159	W w;
160	int events;
161	} ANPENDING;
162
163	static ANPENDING *pendings;
164	static int pendingmax, pendingcnt;
165
166	static void	378	static void
167	event (W w, int events)	379	event (EV_P_ W w, int events)
168	{	380	{
		381	if (w->pending)
		382	{
		383	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		384	return;
		385	}
		386
169	w->pending = ++pendingcnt;	387	w->pending = ++pendingcnt [ABSPRI (w)];
170	array_needsize (pendings, pendingmax, pendingcnt, );	388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
171	pendings [pendingcnt - 1].w = w;	389	pendings [ABSPRI (w)][w->pending - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	390	pendings [ABSPRI (w)][w->pending - 1].events = events;
173	}	391	}
174		392
175	static void	393	static void
176	queue_events (W *events, int eventcnt, int type)	394	queue_events (EV_P_ W *events, int eventcnt, int type)
177	{	395	{
178	int i;	396	int i;
179		397
180	for (i = 0; i < eventcnt; ++i)	398	for (i = 0; i < eventcnt; ++i)
181	event (events [i], type);	399	event (EV_A_ events [i], type);
182	}	400	}
183		401
184	static void	402	static void
185	fd_event (int fd, int events)	403	fd_event (EV_P_ int fd, int events)
186	{	404	{
187	ANFD *anfd = anfds + fd;	405	ANFD *anfd = anfds + fd;
188	struct ev_io *w;	406	struct ev_io *w;
189		407
190	for (w = anfd->head; w; w = w->next)	408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
191	{	409	{
192	int ev = w->events & events;	410	int ev = w->events & events;
193		411
194	if (ev)	412	if (ev)
195	event ((W)w, ev);	413	event (EV_A_ (W)w, ev);
196	}	414	}
197	}	415	}
198		416
199	/*****************************************************************************/	417	/*****************************************************************************/
200		418
201	static int *fdchanges;
202	static int fdchangemax, fdchangecnt;
203
204	static void	419	static void
205	fd_reify (void)	420	fd_reify (EV_P)
206	{	421	{
207	int i;	422	int i;
208		423
209	for (i = 0; i < fdchangecnt; ++i)	424	for (i = 0; i < fdchangecnt; ++i)
210	{	425	{
…		…
212	ANFD *anfd = anfds + fd;	427	ANFD *anfd = anfds + fd;
213	struct ev_io *w;	428	struct ev_io *w;
214		429
215	int events = 0;	430	int events = 0;
216		431
217	for (w = anfd->head; w; w = w->next)	432	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
218	events |= w->events;	433	events |= w->events;
219		434
220	anfd->events &= ~EV_REIFY;	435	anfd->reify = 0;
221		436
222	if (anfd->events != events)
223	{
224	method_modify (fd, anfd->events, events);	437	method_modify (EV_A_ fd, anfd->events, events);
225	anfd->events = events;	438	anfd->events = events;
226	}
227	}	439	}
228		440
229	fdchangecnt = 0;	441	fdchangecnt = 0;
230	}	442	}
231		443
232	static void	444	static void
233	fd_change (int fd)	445	fd_change (EV_P_ int fd)
234	{	446	{
235	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	447	if (anfds [fd].reify)
236	return;	448	return;
237		449
238	anfds [fd].events |= EV_REIFY;	450	anfds [fd].reify = 1;
239		451
240	++fdchangecnt;	452	++fdchangecnt;
241	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
242	fdchanges [fdchangecnt - 1] = fd;	454	fdchanges [fdchangecnt - 1] = fd;
243	}	455	}
244		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
245	/* called on EBADF to verify fds */	479	/* called on EBADF to verify fds */
246	static void	480	static void
247	fd_recheck (void)	481	fd_ebadf (EV_P)
248	{	482	{
249	int fd;	483	int fd;
250		484
251	for (fd = 0; fd < anfdmax; ++fd)	485	for (fd = 0; fd < anfdmax; ++fd)
252	if (anfds [fd].events)	486	if (anfds [fd].events)
253	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	487	if (!fd_valid (fd) == -1 && errno == EBADF)
254	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)
255	{	499	{
256	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	500	fd_kill (EV_A_ fd);
257	ev_io_stop (anfds [fd].head);	501	return;
258	}	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	}
259	}	518	}
260		519
261	/*****************************************************************************/	520	/*****************************************************************************/
262		521
263	static struct ev_timer **timers;
264	static int timermax, timercnt;
265
266	static struct ev_periodic **periodics;
267	static int periodicmax, periodiccnt;
268
269	static void	522	static void
270	upheap (WT *timers, int k)	523	upheap (WT *heap, int k)
271	{	524	{
272	WT w = timers [k];	525	WT w = heap [k];
273		526
274	while (k && timers [k >> 1]->at > w->at)	527	while (k && heap [k >> 1]->at > w->at)
275	{	528	{
276	timers [k] = timers [k >> 1];	529	heap [k] = heap [k >> 1];
277	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
278	k >>= 1;	531	k >>= 1;
279	}	532	}
280		533
281	timers [k] = w;	534	heap [k] = w;
282	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
283		536
284	}	537	}
285		538
286	static void	539	static void
287	downheap (WT *timers, int N, int k)	540	downheap (WT *heap, int N, int k)
288	{	541	{
289	WT w = timers [k];	542	WT w = heap [k];
290		543
291	while (k < (N >> 1))	544	while (k < (N >> 1))
292	{	545	{
293	int j = k << 1;	546	int j = k << 1;
294		547
295	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	548	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
296	++j;	549	++j;
297		550
298	if (w->at <= timers [j]->at)	551	if (w->at <= heap [j]->at)
299	break;	552	break;
300		553
301	timers [k] = timers [j];	554	heap [k] = heap [j];
302	timers [k]->active = k + 1;	555	((W)heap [k])->active = k + 1;
303	k = j;	556	k = j;
304	}	557	}
305		558
306	timers [k] = w;	559	heap [k] = w;
307	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
308	}	561	}
309		562
310	/*****************************************************************************/	563	/*****************************************************************************/
311		564
312	typedef struct	565	typedef struct
313	{	566	{
314	struct ev_signal *head;	567	WL head;
315	sig_atomic_t gotsig;	568	sig_atomic_t volatile gotsig;
316	} ANSIG;	569	} ANSIG;
317		570
318	static ANSIG *signals;	571	static ANSIG *signals;
319	static int signalmax;	572	static int signalmax;
320		573
321	static int sigpipe [2];	574	static int sigpipe [2];
322	static sig_atomic_t gotsig;	575	static sig_atomic_t volatile gotsig;
323	static struct ev_io sigev;	576	static struct ev_io sigev;
324		577
325	static void	578	static void
326	signals_init (ANSIG *base, int count)	579	signals_init (ANSIG *base, int count)
327	{	580	{
328	while (count--)	581	while (count--)
329	{	582	{
330	base->head = 0;	583	base->head = 0;
331	base->gotsig = 0;	584	base->gotsig = 0;
		585
332	++base;	586	++base;
333	}	587	}
334	}	588	}
335		589
336	static void	590	static void
337	sighandler (int signum)	591	sighandler (int signum)
338	{	592	{
		593	#if WIN32
		594	signal (signum, sighandler);
		595	#endif
		596
339	signals [signum - 1].gotsig = 1;	597	signals [signum - 1].gotsig = 1;
340		598
341	if (!gotsig)	599	if (!gotsig)
342	{	600	{
		601	int old_errno = errno;
343	gotsig = 1;	602	gotsig = 1;
344	write (sigpipe [1], &gotsig, 1);	603	write (sigpipe [1], &signum, 1);
		604	errno = old_errno;
345	}	605	}
346	}	606	}
347		607
348	static void	608	static void
349	sigcb (struct ev_io *iow, int revents)	609	sigcb (EV_P_ struct ev_io *iow, int revents)
350	{	610	{
351	struct ev_signal *w;	611	WL w;
352	int sig;	612	int signum;
353		613
		614	read (sigpipe [0], &revents, 1);
354	gotsig = 0;	615	gotsig = 0;
355	read (sigpipe [0], &revents, 1);
356		616
357	for (sig = signalmax; sig--; )	617	for (signum = signalmax; signum--; )
358	if (signals [sig].gotsig)	618	if (signals [signum].gotsig)
359	{	619	{
360	signals [sig].gotsig = 0;	620	signals [signum].gotsig = 0;
361		621
362	for (w = signals [sig].head; w; w = w->next)	622	for (w = signals [signum].head; w; w = w->next)
363	event ((W)w, EV_SIGNAL);	623	event (EV_A_ (W)w, EV_SIGNAL);
364	}	624	}
365	}	625	}
366		626
367	static void	627	static void
368	siginit (void)	628	siginit (EV_P)
369	{	629	{
		630	#ifndef WIN32
370	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
371	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
372		633
373	/* rather than sort out wether we really need nb, set it */	634	/* rather than sort out wether we really need nb, set it */
374	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
375	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		637	#endif
376		638
377	ev_io_set (&sigev, sigpipe [0], EV_READ);	639	ev_io_set (&sigev, sigpipe [0], EV_READ);
378	ev_io_start (&sigev);	640	ev_io_start (EV_A_ &sigev);
		641	ev_unref (EV_A); /* child watcher should not keep loop alive */
379	}	642	}
380		643
381	/*****************************************************************************/	644	/*****************************************************************************/
382		645
383	static struct ev_idle **idles;
384	static int idlemax, idlecnt;
385
386	static struct ev_prepare **prepares;
387	static int preparemax, preparecnt;
388
389	static struct ev_check **checks;
390	static int checkmax, checkcnt;
391
392	/*****************************************************************************/
393
394	static struct ev_child *childs [PID_HASHSIZE];	646	static struct ev_child *childs [PID_HASHSIZE];
		647
		648	#ifndef WIN32
		649
395	static struct ev_signal childev;	650	static struct ev_signal childev;
396		651
397	#ifndef WCONTINUED	652	#ifndef WCONTINUED
398	# define WCONTINUED 0	653	# define WCONTINUED 0
399	#endif	654	#endif
400		655
401	static void	656	static void
402	childcb (struct ev_signal *sw, int revents)	657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
403	{	658	{
404	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	{
405	int pid, status;	674	int pid, status;
406		675
407	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
408	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	677	{
409	if (w->pid == pid || w->pid == -1)	678	/* make sure we are called again until all childs have been reaped */
410	{	679	event (EV_A_ (W)sw, EV_SIGNAL);
411	w->status = status;	680
412	event ((W)w, EV_CHILD);	681	child_reap (EV_A_ sw, pid, pid, status);
413	}	682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		683	}
414	}	684	}
		685
		686	#endif
415		687
416	/*****************************************************************************/	688	/*****************************************************************************/
417		689
		690	#if EV_USE_KQUEUE
		691	# include "ev_kqueue.c"
		692	#endif
418	#if EV_USE_EPOLL	693	#if EV_USE_EPOLL
419	# include "ev_epoll.c"	694	# include "ev_epoll.c"
420	#endif	695	#endif
		696	#if EV_USE_POLL
		697	# include "ev_poll.c"
		698	#endif
421	#if EV_USE_SELECT	699	#if EV_USE_SELECT
422	# include "ev_select.c"	700	# include "ev_select.c"
423	#endif	701	#endif
424		702
425	int	703	int
…		…
432	ev_version_minor (void)	710	ev_version_minor (void)
433	{	711	{
434	return EV_VERSION_MINOR;	712	return EV_VERSION_MINOR;
435	}	713	}
436		714
437	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)
438	{	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	{
439	if (!ev_method)	736	if (!method)
440	{	737	{
441	#if EV_USE_MONOTONIC	738	#if EV_USE_MONOTONIC
442	{	739	{
443	struct timespec ts;	740	struct timespec ts;
444	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
445	have_monotonic = 1;	742	have_monotonic = 1;
446	}	743	}
447	#endif	744	#endif
448		745
449	ev_now = ev_time ();	746	rt_now = ev_time ();
450	now = get_clock ();	747	mn_now = get_clock ();
		748	now_floor = mn_now;
451	diff = ev_now - now;	749	rtmn_diff = rt_now - mn_now;
452		750
453	if (pipe (sigpipe))	751	if (methods == EVMETHOD_AUTO)
454	return 0;	752	if (!enable_secure () && getenv ("LIBEV_METHODS"))
455		753	methods = atoi (getenv ("LIBEV_METHODS"));
		754	else
456	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
457	#if EV_USE_EPOLL	764	#if EV_USE_EPOLL
458	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);
459	#endif	769	#endif
460	#if EV_USE_SELECT	770	#if EV_USE_SELECT
461	if (ev_method == EVMETHOD_NONE) select_init (flags);	771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
462	#endif	772	#endif
463		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
464	if (ev_method)	899	if (ev_method (EV_A))
465	{	900	{
466	ev_watcher_init (&sigev, sigcb);
467	siginit ();	901	siginit (EV_A);
468		902
		903	#ifndef WIN32
469	ev_signal_init (&childev, childcb, SIGCHLD);	904	ev_signal_init (&childev, childcb, SIGCHLD);
		905	ev_set_priority (&childev, EV_MAXPRI);
470	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
471	}	909	}
		910	else
		911	default_loop = 0;
472	}	912	}
473		913
474	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;
475	}	947	}
476		948
477	/*****************************************************************************/	949	/*****************************************************************************/
478		950
479	void
480	ev_prefork (void)
481	{
482	/* nop */
483	}
484
485	void
486	ev_postfork_parent (void)
487	{
488	/* nop */
489	}
490
491	void
492	ev_postfork_child (void)
493	{
494	#if EV_USE_EPOLL
495	if (ev_method == EVMETHOD_EPOLL)
496	epoll_postfork_child ();
497	#endif
498
499	ev_io_stop (&sigev);
500	close (sigpipe [0]);
501	close (sigpipe [1]);
502	pipe (sigpipe);
503	siginit ();
504	}
505
506	/*****************************************************************************/
507
508	static void	951	static void
509	call_pending (void)	952	call_pending (EV_P)
510	{	953	{
		954	int pri;
		955
		956	for (pri = NUMPRI; pri--; )
511	while (pendingcnt)	957	while (pendingcnt [pri])
512	{	958	{
513	ANPENDING *p = pendings + --pendingcnt;	959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
514		960
515	if (p->w)	961	if (p->w)
516	{	962	{
517	p->w->pending = 0;	963	p->w->pending = 0;
518	p->w->cb (p->w, p->events);	964	p->w->cb (EV_A_ p->w, p->events);
519	}	965	}
520	}	966	}
521	}	967	}
522		968
523	static void	969	static void
524	timers_reify (void)	970	timers_reify (EV_P)
525	{	971	{
526	while (timercnt && timers [0]->at <= now)	972	while (timercnt && ((WT)timers [0])->at <= mn_now)
527	{	973	{
528	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)));
529		977
530	/* first reschedule or stop timer */	978	/* first reschedule or stop timer */
531	if (w->repeat)	979	if (w->repeat)
532	{	980	{
		981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
533	w->at = now + w->repeat;	982	((WT)w)->at = mn_now + w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));
535	downheap ((WT *)timers, timercnt, 0);	983	downheap ((WT *)timers, timercnt, 0);
536	}	984	}
537	else	985	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539		987
540	event ((W)w, EV_TIMEOUT);	988	event (EV_A_ (W)w, EV_TIMEOUT);
541	}	989	}
542	}	990	}
543		991
544	static void	992	static void
545	periodics_reify (void)	993	periodics_reify (EV_P)
546	{	994	{
547	while (periodiccnt && periodics [0]->at <= ev_now)	995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
548	{	996	{
549	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)));
550		1000
551	/* first reschedule or stop timer */	1001	/* first reschedule or stop timer */
552	if (w->interval)	1002	if (w->interval)
553	{	1003	{
554	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;
555	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));
556	downheap ((WT *)periodics, periodiccnt, 0);	1006	downheap ((WT *)periodics, periodiccnt, 0);
557	}	1007	}
558	else	1008	else
559	ev_periodic_stop (w); /* nonrepeating: stop timer */	1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
560		1010
561	event ((W)w, EV_TIMEOUT);	1011	event (EV_A_ (W)w, EV_PERIODIC);
562	}	1012	}
563	}	1013	}
564		1014
565	static void	1015	static void
566	periodics_reschedule (ev_tstamp diff)	1016	periodics_reschedule (EV_P)
567	{	1017	{
568	int i;	1018	int i;
569		1019
570	/* adjust periodics after time jump */	1020	/* adjust periodics after time jump */
571	for (i = 0; i < periodiccnt; ++i)	1021	for (i = 0; i < periodiccnt; ++i)
572	{	1022	{
573	struct ev_periodic *w = periodics [i];	1023	struct ev_periodic *w = periodics [i];
574		1024
575	if (w->interval)	1025	if (w->interval)
576	{	1026	{
577	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;
578		1028
579	if (fabs (diff) >= 1e-4)	1029	if (fabs (diff) >= 1e-4)
580	{	1030	{
581	ev_periodic_stop (w);	1031	ev_periodic_stop (EV_A_ w);
582	ev_periodic_start (w);	1032	ev_periodic_start (EV_A_ w);
583		1033
584	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
585	}	1035	}
586	}	1036	}
587	}	1037	}
588	}	1038	}
589		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
590	static void	1058	static void
591	time_update (void)	1059	time_update (EV_P)
592	{	1060	{
593	int i;	1061	int i;
594		1062
595	ev_now = ev_time ();	1063	#if EV_USE_MONOTONIC
596
597	if (have_monotonic)	1064	if (expect_true (have_monotonic))
598	{	1065	{
599	ev_tstamp odiff = diff;	1066	if (time_update_monotonic (EV_A))
600
601	for (i = 4; --i; ) /* loop a few times, before making important decisions */
602	{	1067	{
603	now = get_clock ();	1068	ev_tstamp odiff = rtmn_diff;
		1069
		1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		1071	{
604	diff = ev_now - now;	1072	rtmn_diff = rt_now - mn_now;
605		1073
606	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
607	return; /* all is well */	1075	return; /* all is well */
608		1076
609	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) */
610	}	1085	}
611
612	periodics_reschedule (diff - odiff);
613	/* no timer adjustment, as the monotonic clock doesn't jump */
614	}	1086	}
615	else	1087	else
		1088	#endif
616	{	1089	{
617	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))
618	{	1093	{
619	periodics_reschedule (ev_now - now);	1094	periodics_reschedule (EV_A);
620		1095
621	/* 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 */
622	for (i = 0; i < timercnt; ++i)	1097	for (i = 0; i < timercnt; ++i)
623	timers [i]->at += diff;	1098	((WT)timers [i])->at += rt_now - mn_now;
624	}	1099	}
625		1100
626	now = ev_now;	1101	mn_now = rt_now;
627	}	1102	}
628	}	1103	}
629		1104
630	int ev_loop_done;	1105	void
		1106	ev_ref (EV_P)
		1107	{
		1108	++activecnt;
		1109	}
631		1110
		1111	void
		1112	ev_unref (EV_P)
		1113	{
		1114	--activecnt;
		1115	}
		1116
		1117	static int loop_done;
		1118
		1119	void
632	void ev_loop (int flags)	1120	ev_loop (EV_P_ int flags)
633	{	1121	{
634	double block;	1122	double block;
635	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
636		1124
637	do	1125	do
638	{	1126	{
639	/* queue check watchers (and execute them) */	1127	/* queue check watchers (and execute them) */
640	if (preparecnt)	1128	if (expect_false (preparecnt))
641	{	1129	{
642	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
643	call_pending ();	1131	call_pending (EV_A);
644	}	1132	}
645		1133
		1134	/* we might have forked, so reify kernel state if necessary */
		1135	if (expect_false (postfork))
		1136	loop_fork (EV_A);
		1137
646	/* update fd-related kernel structures */	1138	/* update fd-related kernel structures */
647	fd_reify ();	1139	fd_reify (EV_A);
648		1140
649	/* calculate blocking time */	1141	/* calculate blocking time */
650		1142
651	/* 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
652	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	{
653	ev_now = ev_time ();	1151	rt_now = ev_time ();
		1152	mn_now = rt_now;
		1153	}
654		1154
655	if (flags & EVLOOP_NONBLOCK || idlecnt)	1155	if (flags & EVLOOP_NONBLOCK || idlecnt)
656	block = 0.;	1156	block = 0.;
657	else	1157	else
658	{	1158	{
659	block = MAX_BLOCKTIME;	1159	block = MAX_BLOCKTIME;
660		1160
661	if (timercnt)	1161	if (timercnt)
662	{	1162	{
663	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;
664	if (block > to) block = to;	1164	if (block > to) block = to;
665	}	1165	}
666		1166
667	if (periodiccnt)	1167	if (periodiccnt)
668	{	1168	{
669	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
670	if (block > to) block = to;	1170	if (block > to) block = to;
671	}	1171	}
672		1172
673	if (block < 0.) block = 0.;	1173	if (block < 0.) block = 0.;
674	}	1174	}
675		1175
676	method_poll (block);	1176	method_poll (EV_A_ block);
677		1177
678	/* update ev_now, do magic */	1178	/* update rt_now, do magic */
679	time_update ();	1179	time_update (EV_A);
680		1180
681	/* queue pending timers and reschedule them */	1181	/* queue pending timers and reschedule them */
682	timers_reify (); /* relative timers called last */	1182	timers_reify (EV_A); /* relative timers called last */
683	periodics_reify (); /* absolute timers called first */	1183	periodics_reify (EV_A); /* absolute timers called first */
684		1184
685	/* queue idle watchers unless io or timers are pending */	1185	/* queue idle watchers unless io or timers are pending */
686	if (!pendingcnt)	1186	if (!pendingcnt)
687	queue_events ((W *)idles, idlecnt, EV_IDLE);	1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
688		1188
689	/* queue check watchers, to be executed first */	1189	/* queue check watchers, to be executed first */
690	if (checkcnt)	1190	if (checkcnt)
691	queue_events ((W *)checks, checkcnt, EV_CHECK);	1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
692		1192
693	call_pending ();	1193	call_pending (EV_A);
694	}	1194	}
695	while (!ev_loop_done);	1195	while (activecnt && !loop_done);
696		1196
697	if (ev_loop_done != 2)	1197	if (loop_done != 2)
698	ev_loop_done = 0;	1198	loop_done = 0;
		1199	}
		1200
		1201	void
		1202	ev_unloop (EV_P_ int how)
		1203	{
		1204	loop_done = how;
699	}	1205	}
700		1206
701	/*****************************************************************************/	1207	/*****************************************************************************/
702		1208
703	static void	1209	inline void
704	wlist_add (WL *head, WL elem)	1210	wlist_add (WL *head, WL elem)
705	{	1211	{
706	elem->next = *head;	1212	elem->next = *head;
707	*head = elem;	1213	*head = elem;
708	}	1214	}
709		1215
710	static void	1216	inline void
711	wlist_del (WL *head, WL elem)	1217	wlist_del (WL *head, WL elem)
712	{	1218	{
713	while (*head)	1219	while (*head)
714	{	1220	{
715	if (*head == elem)	1221	if (*head == elem)
…		…
720		1226
721	head = &(*head)->next;	1227	head = &(*head)->next;
722	}	1228	}
723	}	1229	}
724		1230
725	static void	1231	inline void
726	ev_clear (W w)	1232	ev_clear_pending (EV_P_ W w)
727	{	1233	{
728	if (w->pending)	1234	if (w->pending)
729	{	1235	{
730	pendings [w->pending - 1].w = 0;	1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;
731	w->pending = 0;	1237	w->pending = 0;
732	}	1238	}
733	}	1239	}
734		1240
735	static void	1241	inline void
736	ev_start (W w, int active)	1242	ev_start (EV_P_ W w, int active)
737	{	1243	{
		1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1246
738	w->active = active;	1247	w->active = active;
		1248	ev_ref (EV_A);
739	}	1249	}
740		1250
741	static void	1251	inline void
742	ev_stop (W w)	1252	ev_stop (EV_P_ W w)
743	{	1253	{
		1254	ev_unref (EV_A);
744	w->active = 0;	1255	w->active = 0;
745	}	1256	}
746		1257
747	/*****************************************************************************/	1258	/*****************************************************************************/
748		1259
749	void	1260	void
750	ev_io_start (struct ev_io *w)	1261	ev_io_start (EV_P_ struct ev_io *w)
751	{	1262	{
		1263	int fd = w->fd;
		1264
752	if (ev_is_active (w))	1265	if (ev_is_active (w))
753	return;	1266	return;
754		1267
755	int fd = w->fd;	1268	assert (("ev_io_start called with negative fd", fd >= 0));
756		1269
757	ev_start ((W)w, 1);	1270	ev_start (EV_A_ (W)w, 1);
758	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
759	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);
760		1273
761	fd_change (fd);	1274	fd_change (EV_A_ fd);
762	}	1275	}
763		1276
764	void	1277	void
765	ev_io_stop (struct ev_io *w)	1278	ev_io_stop (EV_P_ struct ev_io *w)
766	{	1279	{
767	ev_clear ((W)w);	1280	ev_clear_pending (EV_A_ (W)w);
768	if (!ev_is_active (w))	1281	if (!ev_is_active (w))
769	return;	1282	return;
770		1283
771	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
772	ev_stop ((W)w);	1285	ev_stop (EV_A_ (W)w);
773		1286
774	fd_change (w->fd);	1287	fd_change (EV_A_ w->fd);
775	}	1288	}
776		1289
777	void	1290	void
778	ev_timer_start (struct ev_timer *w)	1291	ev_timer_start (EV_P_ struct ev_timer *w)
779	{	1292	{
780	if (ev_is_active (w))	1293	if (ev_is_active (w))
781	return;	1294	return;
782		1295
783	w->at += now;	1296	((WT)w)->at += mn_now;
784		1297
785	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.));
786		1299
787	ev_start ((W)w, ++timercnt);	1300	ev_start (EV_A_ (W)w, ++timercnt);
788	array_needsize (timers, timermax, timercnt, );	1301	array_needsize (timers, timermax, timercnt, (void));
789	timers [timercnt - 1] = w;	1302	timers [timercnt - 1] = w;
790	upheap ((WT *)timers, timercnt - 1);	1303	upheap ((WT *)timers, timercnt - 1);
791	}
792		1304
		1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1306	}
		1307
793	void	1308	void
794	ev_timer_stop (struct ev_timer *w)	1309	ev_timer_stop (EV_P_ struct ev_timer *w)
795	{	1310	{
796	ev_clear ((W)w);	1311	ev_clear_pending (EV_A_ (W)w);
797	if (!ev_is_active (w))	1312	if (!ev_is_active (w))
798	return;	1313	return;
799		1314
		1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1316
800	if (w->active < timercnt--)	1317	if (((W)w)->active < timercnt--)
801	{	1318	{
802	timers [w->active - 1] = timers [timercnt];	1319	timers [((W)w)->active - 1] = timers [timercnt];
803	downheap ((WT *)timers, timercnt, w->active - 1);	1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
804	}	1321	}
805		1322
806	w->at = w->repeat;	1323	((WT)w)->at = w->repeat;
807		1324
808	ev_stop ((W)w);	1325	ev_stop (EV_A_ (W)w);
809	}	1326	}
810		1327
811	void	1328	void
812	ev_timer_again (struct ev_timer *w)	1329	ev_timer_again (EV_P_ struct ev_timer *w)
813	{	1330	{
814	if (ev_is_active (w))	1331	if (ev_is_active (w))
815	{	1332	{
816	if (w->repeat)	1333	if (w->repeat)
817	{	1334	{
818	w->at = now + w->repeat;	1335	((WT)w)->at = mn_now + w->repeat;
819	downheap ((WT *)timers, timercnt, w->active - 1);	1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1337	}
821	else	1338	else
822	ev_timer_stop (w);	1339	ev_timer_stop (EV_A_ w);
823	}	1340	}
824	else if (w->repeat)	1341	else if (w->repeat)
825	ev_timer_start (w);	1342	ev_timer_start (EV_A_ w);
826	}	1343	}
827		1344
828	void	1345	void
829	ev_periodic_start (struct ev_periodic *w)	1346	ev_periodic_start (EV_P_ struct ev_periodic *w)
830	{	1347	{
831	if (ev_is_active (w))	1348	if (ev_is_active (w))
832	return;	1349	return;
833		1350
834	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.));
835		1352
836	/* 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 */
837	if (w->interval)	1354	if (w->interval)
838	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;
839		1356
840	ev_start ((W)w, ++periodiccnt);	1357	ev_start (EV_A_ (W)w, ++periodiccnt);
841	array_needsize (periodics, periodicmax, periodiccnt, );	1358	array_needsize (periodics, periodicmax, periodiccnt, (void));
842	periodics [periodiccnt - 1] = w;	1359	periodics [periodiccnt - 1] = w;
843	upheap ((WT *)periodics, periodiccnt - 1);	1360	upheap ((WT *)periodics, periodiccnt - 1);
844	}
845		1361
		1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1363	}
		1364
846	void	1365	void
847	ev_periodic_stop (struct ev_periodic *w)	1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)
848	{	1367	{
849	ev_clear ((W)w);	1368	ev_clear_pending (EV_A_ (W)w);
850	if (!ev_is_active (w))	1369	if (!ev_is_active (w))
851	return;	1370	return;
852		1371
		1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1373
853	if (w->active < periodiccnt--)	1374	if (((W)w)->active < periodiccnt--)
854	{	1375	{
855	periodics [w->active - 1] = periodics [periodiccnt];	1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];
856	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
857	}	1378	}
858		1379
859	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
860	}	1381	}
861		1382
862	void	1383	void
863	ev_signal_start (struct ev_signal *w)	1384	ev_idle_start (EV_P_ struct ev_idle *w)
864	{	1385	{
865	if (ev_is_active (w))	1386	if (ev_is_active (w))
866	return;	1387	return;
867		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
868	ev_start ((W)w, 1);	1464	ev_start (EV_A_ (W)w, 1);
869	array_needsize (signals, signalmax, w->signum, signals_init);	1465	array_needsize (signals, signalmax, w->signum, signals_init);
870	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
871		1467
872	if (!w->next)	1468	if (!((WL)w)->next)
873	{	1469	{
		1470	#if WIN32
		1471	signal (w->signum, sighandler);
		1472	#else
874	struct sigaction sa;	1473	struct sigaction sa;
875	sa.sa_handler = sighandler;	1474	sa.sa_handler = sighandler;
876	sigfillset (&sa.sa_mask);	1475	sigfillset (&sa.sa_mask);
877	sa.sa_flags = 0;	1476	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
878	sigaction (w->signum, &sa, 0);	1477	sigaction (w->signum, &sa, 0);
		1478	#endif
879	}	1479	}
880	}	1480	}
881		1481
882	void	1482	void
883	ev_signal_stop (struct ev_signal *w)	1483	ev_signal_stop (EV_P_ struct ev_signal *w)
884	{	1484	{
885	ev_clear ((W)w);	1485	ev_clear_pending (EV_A_ (W)w);
886	if (!ev_is_active (w))	1486	if (!ev_is_active (w))
887	return;	1487	return;
888		1488
889	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
890	ev_stop ((W)w);	1490	ev_stop (EV_A_ (W)w);
891		1491
892	if (!signals [w->signum - 1].head)	1492	if (!signals [w->signum - 1].head)
893	signal (w->signum, SIG_DFL);	1493	signal (w->signum, SIG_DFL);
894	}	1494	}
895		1495
896	void	1496	void
897	ev_idle_start (struct ev_idle *w)	1497	ev_child_start (EV_P_ struct ev_child *w)
898	{	1498	{
		1499	#if EV_MULTIPLICITY
		1500	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1501	#endif
899	if (ev_is_active (w))	1502	if (ev_is_active (w))
900	return;	1503	return;
901		1504
902	ev_start ((W)w, ++idlecnt);	1505	ev_start (EV_A_ (W)w, 1);
903	array_needsize (idles, idlemax, idlecnt, );	1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
904	idles [idlecnt - 1] = w;
905	}	1507	}
906		1508
907	void	1509	void
908	ev_idle_stop (struct ev_idle *w)	1510	ev_child_stop (EV_P_ struct ev_child *w)
909	{	1511	{
910	ev_clear ((W)w);	1512	ev_clear_pending (EV_A_ (W)w);
911	if (ev_is_active (w))	1513	if (ev_is_active (w))
912	return;	1514	return;
913		1515
914	idles [w->active - 1] = idles [--idlecnt];
915	ev_stop ((W)w);
916	}
917
918	void
919	ev_prepare_start (struct ev_prepare *w)
920	{
921	if (ev_is_active (w))
922	return;
923
924	ev_start ((W)w, ++preparecnt);
925	array_needsize (prepares, preparemax, preparecnt, );
926	prepares [preparecnt - 1] = w;
927	}
928
929	void
930	ev_prepare_stop (struct ev_prepare *w)
931	{
932	ev_clear ((W)w);
933	if (ev_is_active (w))
934	return;
935
936	prepares [w->active - 1] = prepares [--preparecnt];
937	ev_stop ((W)w);
938	}
939
940	void
941	ev_check_start (struct ev_check *w)
942	{
943	if (ev_is_active (w))
944	return;
945
946	ev_start ((W)w, ++checkcnt);
947	array_needsize (checks, checkmax, checkcnt, );
948	checks [checkcnt - 1] = w;
949	}
950
951	void
952	ev_check_stop (struct ev_check *w)
953	{
954	ev_clear ((W)w);
955	if (ev_is_active (w))
956	return;
957
958	checks [w->active - 1] = checks [--checkcnt];
959	ev_stop ((W)w);
960	}
961
962	void
963	ev_child_start (struct ev_child *w)
964	{
965	if (ev_is_active (w))
966	return;
967
968	ev_start ((W)w, 1);
969	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
970	}
971
972	void
973	ev_child_stop (struct ev_child *w)
974	{
975	ev_clear ((W)w);
976	if (ev_is_active (w))
977	return;
978
979	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	ev_stop ((W)w);	1517	ev_stop (EV_A_ (W)w);
981	}	1518	}
982		1519
983	/*****************************************************************************/	1520	/*****************************************************************************/
984		1521
985	struct ev_once	1522	struct ev_once
…		…
989	void (*cb)(int revents, void *arg);	1526	void (*cb)(int revents, void *arg);
990	void *arg;	1527	void *arg;
991	};	1528	};
992		1529
993	static void	1530	static void
994	once_cb (struct ev_once *once, int revents)	1531	once_cb (EV_P_ struct ev_once *once, int revents)
995	{	1532	{
996	void (*cb)(int revents, void *arg) = once->cb;	1533	void (*cb)(int revents, void *arg) = once->cb;
997	void *arg = once->arg;	1534	void *arg = once->arg;
998		1535
999	ev_io_stop (&once->io);	1536	ev_io_stop (EV_A_ &once->io);
1000	ev_timer_stop (&once->to);	1537	ev_timer_stop (EV_A_ &once->to);
1001	free (once);	1538	ev_free (once);
1002		1539
1003	cb (revents, arg);	1540	cb (revents, arg);
1004	}	1541	}
1005		1542
1006	static void	1543	static void
1007	once_cb_io (struct ev_io *w, int revents)	1544	once_cb_io (EV_P_ struct ev_io *w, int revents)
1008	{	1545	{
1009	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);
1010	}	1547	}
1011		1548
1012	static void	1549	static void
1013	once_cb_to (struct ev_timer *w, int revents)	1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1014	{	1551	{
1015	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);
1016	}	1553	}
1017		1554
1018	void	1555	void
1019	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)
1020	{	1557	{
1021	struct ev_once *once = malloc (sizeof (struct ev_once));	1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1022		1559
1023	if (!once)	1560	if (!once)
1024	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1025	else	1562	else
1026	{	1563	{
…		…
1029		1566
1030	ev_watcher_init (&once->io, once_cb_io);	1567	ev_watcher_init (&once->io, once_cb_io);
1031	if (fd >= 0)	1568	if (fd >= 0)
1032	{	1569	{
1033	ev_io_set (&once->io, fd, events);	1570	ev_io_set (&once->io, fd, events);
1034	ev_io_start (&once->io);	1571	ev_io_start (EV_A_ &once->io);
1035	}	1572	}
1036		1573
1037	ev_watcher_init (&once->to, once_cb_to);	1574	ev_watcher_init (&once->to, once_cb_to);
1038	if (timeout >= 0.)	1575	if (timeout >= 0.)
1039	{	1576	{
1040	ev_timer_set (&once->to, timeout, 0.);	1577	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1578	ev_timer_start (EV_A_ &once->to);
1042	}	1579	}
1043	}	1580	}
1044	}	1581	}
1045		1582
1046	/*****************************************************************************/
1047
1048	#if 0
1049
1050	struct ev_io wio;
1051
1052	static void
1053	sin_cb (struct ev_io *w, int revents)
1054	{
1055	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056	}
1057
1058	static void
1059	ocb (struct ev_timer *w, int revents)
1060	{
1061	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062	ev_timer_stop (w);
1063	ev_timer_start (w);
1064	}
1065
1066	static void
1067	scb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070	ev_io_stop (&wio);
1071	ev_io_start (&wio);
1072	}
1073
1074	static void
1075	gcb (struct ev_signal *w, int revents)
1076	{
1077	fprintf (stderr, "generic %x\n", revents);
1078
1079	}
1080
1081	int main (void)
1082	{
1083	ev_init (0);
1084
1085	ev_io_init (&wio, sin_cb, 0, EV_READ);
1086	ev_io_start (&wio);
1087
1088	struct ev_timer t[10000];
1089
1090	#if 0
1091	int i;
1092	for (i = 0; i < 10000; ++i)
1093	{
1094	struct ev_timer *w = t + i;
1095	ev_watcher_init (w, ocb, i);
1096	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097	ev_timer_start (w);
1098	if (drand48 () < 0.5)
1099	ev_timer_stop (w);
1100	}
1101	#endif
1102
1103	struct ev_timer t1;
1104	ev_timer_init (&t1, ocb, 5, 10);
1105	ev_timer_start (&t1);
1106
1107	struct ev_signal sig;
1108	ev_signal_init (&sig, scb, SIGQUIT);
1109	ev_signal_start (&sig);
1110
1111	struct ev_check cw;
1112	ev_check_init (&cw, gcb);
1113	ev_check_start (&cw);
1114
1115	struct ev_idle iw;
1116	ev_idle_init (&iw, gcb);
1117	ev_idle_start (&iw);
1118
1119	ev_loop (0);
1120
1121	return 0;
1122	}
1123
1124	#endif
1125
1126
1127
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