[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	76	#include <time.h>
		77
		78	#include <signal.h>
		79
		80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
		89	# endif
		90	#endif
50		91
51	/**/	92	/**/
52		93
53	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
55	#endif	96	#endif
56		97
57	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
59	#endif	101	#endif
60		102
61	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
63	#endif	109	#endif
64		110
65	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
67	#endif	113	#endif
68		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
69	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
71	#endif	121	#endif
72		122
73	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
74		130
75	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
76	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
77	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
78	#endif	134	#endif
79		135
80	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
83	#endif	143	#endif
84		144
85	/**/	145	/**/
86		146
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
91		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
92	#include "ev.h"	155	# include "ev.h"
		156	#endif
93		157
94	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	160	# define inline inline
97	#else	161	#else
…		…
103	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
104		168
105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
107		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
108	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
111		178
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
		185	/*****************************************************************************/
		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
		235	typedef struct
		236	{
		237	WL head;
		238	unsigned char events;
		239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
		243	} ANFD;
		244
		245	typedef struct
		246	{
		247	W w;
		248	int events;
		249	} ANPENDING;
		250
		251	#if EV_MULTIPLICITY
		252
		253	struct ev_loop
		254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
		257	#define VAR(name,decl) decl;
		258	#include "ev_vars.h"
		259	#undef VAR
		260	};
		261	#include "ev_wrap.h"
		262
		263	struct ev_loop default_loop_struct;
		264	static struct ev_loop *default_loop;
		265
		266	#else
		267
113	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
114	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
115		272
116	static int have_monotonic; /* runtime */	273	static int default_loop;
117		274
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		276
122	/*****************************************************************************/	277	/*****************************************************************************/
123		278
124	ev_tstamp	279	ev_tstamp
125	ev_time (void)	280	ev_time (void)
…		…
133	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	290	#endif
136	}	291	}
137		292
138	static ev_tstamp	293	inline ev_tstamp
139	get_clock (void)	294	get_clock (void)
140	{	295	{
141	#if EV_USE_MONOTONIC	296	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	297	if (expect_true (have_monotonic))
143	{	298	{
…		…
148	#endif	303	#endif
149		304
150	return ev_time ();	305	return ev_time ();
151	}	306	}
152		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
154		317
155	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
157	{ \	320	{ \
158	int newcnt = cur; \	321	int newcnt = cur; \
159	do \	322	do \
160	{ \	323	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
162	} \	325	} \
163	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
164	\	327	\
165	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
166	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	330	cur = newcnt; \
168	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
169		343
170	/*****************************************************************************/	344	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		345
182	static void	346	static void
183	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
184	{	348	{
185	while (count--)	349	while (count--)
…		…
190		354
191	++base;	355	++base;
192	}	356	}
193	}	357	}
194		358
195	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
196	{	361	{
197	W w;	362	W w_ = (W)w;
198	int events;
199	} ANPENDING;
200		363
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void
205	event (W w, int events)
206	{
207	if (w->pending)	364	if (w_->pending)
208	{	365	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
210	return;	367	return;
211	}	368	}
212		369
213	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
214	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
217	}	374	}
218		375
219	static void	376	static void
220	queue_events (W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	378	{
222	int i;	379	int i;
223		380
224	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
226	}	383	}
227		384
228	static void	385	inline void
229	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
230	{	387	{
231	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	389	struct ev_io *w;
233		390
234	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	392	{
236	int ev = w->events & events;	393	int ev = w->events & revents;
237		394
238	if (ev)	395	if (ev)
239	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
240	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
241	}	404	}
242		405
243	/*****************************************************************************/	406	/*****************************************************************************/
244		407
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	408	static void
249	fd_reify (void)	409	fd_reify (EV_P)
250	{	410	{
251	int i;	411	int i;
252		412
253	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
254	{	414	{
…		…
256	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	417	struct ev_io *w;
258		418
259	int events = 0;	419	int events = 0;
260		420
261	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	422	events \|= w->events;
263		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
264	anfd->reify = 0;	433	anfd->reify = 0;
265		434
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	436	anfd->events = events;
270	}
271	}	437	}
272		438
273	fdchangecnt = 0;	439	fdchangecnt = 0;
274	}	440	}
275		441
276	static void	442	static void
277	fd_change (int fd)	443	fd_change (EV_P_ int fd)
278	{	444	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
280	return;	446	return;
281		447
282	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
283		449
284	++fdchangecnt;	450	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
286	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
287	}	453	}
288		454
289	static void	455	static void
290	fd_kill (int fd)	456	fd_kill (EV_P_ int fd)
291	{	457	{
292	struct ev_io *w;	458	struct ev_io *w;
293		459
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
296	{	461	{
297	ev_io_stop (w);	462	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
300	}	475	}
301		476
302	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
303	static void	478	static void
304	fd_ebadf (void)	479	fd_ebadf (EV_P)
305	{	480	{
306	int fd;	481	int fd;
307		482
308	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	484	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
311	fd_kill (fd);	486	fd_kill (EV_A_ fd);
312	}	487	}
313		488
314	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	490	static void
316	fd_enomem (void)	491	fd_enomem (EV_P)
317	{	492	{
318	int fd = anfdmax;	493	int fd;
319		494
320	while (fd--)	495	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	496	if (anfds [fd].events)
322	{	497	{
323	close (fd);
324	fd_kill (fd);	498	fd_kill (EV_A_ fd);
325	return;	499	return;
326	}	500	}
327	}	501	}
328		502
		503	/* usually called after fork if method needs to re-arm all fds from scratch */
		504	static void
		505	fd_rearm_all (EV_P)
		506	{
		507	int fd;
		508
		509	/* this should be highly optimised to not do anything but set a flag */
		510	for (fd = 0; fd < anfdmax; ++fd)
		511	if (anfds [fd].events)
		512	{
		513	anfds [fd].events = 0;
		514	fd_change (EV_A_ fd);
		515	}
		516	}
		517
329	/*****************************************************************************/	518	/*****************************************************************************/
330		519
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	520	static void
338	upheap (WT *timers, int k)	521	upheap (WT *heap, int k)
339	{	522	{
340	WT w = timers [k];	523	WT w = heap [k];
341		524
342	while (k && timers [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
343	{	526	{
344	timers [k] = timers [k >> 1];	527	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
346	k >>= 1;	529	k >>= 1;
347	}	530	}
348		531
349	timers [k] = w;	532	heap [k] = w;
350	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
351		534
352	}	535	}
353		536
354	static void	537	static void
355	downheap (WT *timers, int N, int k)	538	downheap (WT *heap, int N, int k)
356	{	539	{
357	WT w = timers [k];	540	WT w = heap [k];
358		541
359	while (k < (N >> 1))	542	while (k < (N >> 1))
360	{	543	{
361	int j = k << 1;	544	int j = k << 1;
362		545
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	547	++j;
365		548
366	if (w->at <= timers [j]->at)	549	if (w->at <= heap [j]->at)
367	break;	550	break;
368		551
369	timers [k] = timers [j];	552	heap [k] = heap [j];
370	timers [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
371	k = j;	554	k = j;
372	}	555	}
373		556
374	timers [k] = w;	557	heap [k] = w;
375	timers [k]->active = k + 1;	558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
376	}	566	}
377		567
378	/*****************************************************************************/	568	/*****************************************************************************/
379		569
380	typedef struct	570	typedef struct
381	{	571	{
382	struct ev_signal *head;	572	WL head;
383	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
384	} ANSIG;	574	} ANSIG;
385		575
386	static ANSIG *signals;	576	static ANSIG *signals;
387	static int signalmax;	577	static int signalmax;
…		…
403	}	593	}
404		594
405	static void	595	static void
406	sighandler (int signum)	596	sighandler (int signum)
407	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
408	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
409		603
410	if (!gotsig)	604	if (!gotsig)
411	{	605	{
		606	int old_errno = errno;
412	gotsig = 1;	607	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
414	}	610	}
415	}	611	}
416		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
417	static void	633	static void
418	sigcb (struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	635	{
420	struct ev_signal *w;
421	int signum;	636	int signum;
422		637
423	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	639	gotsig = 0;
425		640
426	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
427	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
428	{	643	ev_feed_signal_event (EV_A_ signum + 1);
429	signals [signum].gotsig = 0;
430
431	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);
433	}
434	}	644	}
435		645
436	static void	646	inline void
437	siginit (void)	647	fd_intern (int fd)
438	{	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	653	fcntl (fd, F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441
442	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	654	fcntl (fd, F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	655	#endif
		656	}
		657
		658	static void
		659	siginit (EV_P)
		660	{
		661	fd_intern (sigpipe [0]);
		662	fd_intern (sigpipe [1]);
445		663
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	667	}
449		668
450	/*****************************************************************************/	669	/*****************************************************************************/
451		670
452	static struct ev_idle **idles;
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
464	static struct ev_signal childev;	675	static struct ev_signal childev;
465		676
466	#ifndef WCONTINUED	677	#ifndef WCONTINUED
467	# define WCONTINUED 0	678	# define WCONTINUED 0
468	#endif	679	#endif
469		680
470	static void	681	static void
471	childcb (struct ev_signal *sw, int revents)	682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	683	{
473	struct ev_child *w;	684	struct ev_child *w;
		685
		686	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		687	if (w->pid == pid \|\| !w->pid)
		688	{
		689	ev_priority (w) = ev_priority (sw); /* need to do it now */
		690	w->rpid = pid;
		691	w->rstatus = status;
		692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		693	}
		694	}
		695
		696	static void
		697	childcb (EV_P_ struct ev_signal *sw, int revents)
		698	{
474	int pid, status;	699	int pid, status;
475		700
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	702	{
478	if (w->pid == pid \|\| !w->pid)	703	/* make sure we are called again until all childs have been reaped */
479	{	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	705
481	event ((W)w, EV_CHILD);	706	child_reap (EV_A_ sw, pid, pid, status);
482	}	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
483	}	709	}
		710
		711	#endif
484		712
485	/*****************************************************************************/	713	/*****************************************************************************/
486		714
		715	#if EV_USE_KQUEUE
		716	# include "ev_kqueue.c"
		717	#endif
487	#if EV_USE_EPOLL	718	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	719	# include "ev_epoll.c"
489	#endif	720	#endif
490	#if EV_USE_POLL	721	#if EV_USE_POLL
491	# include "ev_poll.c"	722	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	735	ev_version_minor (void)
505	{	736	{
506	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
507	}	738	}
508		739
509	/* return true if we are running with elevated privileges and ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	741	static int
511	enable_secure ()	742	enable_secure (void)
512	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
513	return getuid () != geteuid ()	747	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
		749	#endif
515	}	750	}
516		751
517	int ev_init (int methods)	752	unsigned int
		753	ev_method (EV_P)
518	{	754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
519	if (!ev_method)	761	if (!method)
520	{	762	{
521	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
522	{	764	{
523	struct timespec ts;	765	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	767	have_monotonic = 1;
526	}	768	}
527	#endif	769	#endif
528		770
529	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
530	now = get_clock ();	772	mn_now = get_clock ();
531	now_floor = now;	773	now_floor = mn_now;
532	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
533		775
534	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
535	return 0;
536
537	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
540	else
541	methods = EVMETHOD_ANY;
542		778
		779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
543	ev_method = 0;	782	method = 0;
		783	#if EV_USE_KQUEUE
		784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		785	#endif
544	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
546	#endif	788	#endif
547	#if EV_USE_POLL	789	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
549	#endif	791	#endif
550	#if EV_USE_SELECT	792	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
552	#endif	794	#endif
553		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
		798	}
		799	}
		800
		801	void
		802	loop_destroy (EV_P)
		803	{
		804	int i;
		805
		806	#if EV_USE_KQUEUE
		807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		808	#endif
		809	#if EV_USE_EPOLL
		810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		811	#endif
		812	#if EV_USE_POLL
		813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		814	#endif
		815	#if EV_USE_SELECT
		816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		817	#endif
		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
		832	method = 0;
		833	}
		834
		835	static void
		836	loop_fork (EV_P)
		837	{
		838	#if EV_USE_EPOLL
		839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		840	#endif
		841	#if EV_USE_KQUEUE
		842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
		861	}
		862
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *
		865	ev_loop_new (unsigned int flags)
		866	{
		867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
		871	loop_init (EV_A_ flags);
		872
		873	if (ev_method (EV_A))
		874	return loop;
		875
		876	return 0;
		877	}
		878
		879	void
		880	ev_loop_destroy (EV_P)
		881	{
		882	loop_destroy (EV_A);
		883	ev_free (loop);
		884	}
		885
		886	void
		887	ev_loop_fork (EV_P)
		888	{
		889	postfork = 1;
		890	}
		891
		892	#endif
		893
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *
		896	#else
		897	int
		898	#endif
		899	ev_default_loop (unsigned int flags)
		900	{
		901	if (sigpipe [0] == sigpipe [1])
		902	if (pipe (sigpipe))
		903	return 0;
		904
		905	if (!default_loop)
		906	{
		907	#if EV_MULTIPLICITY
		908	struct ev_loop *loop = default_loop = &default_loop_struct;
		909	#else
		910	default_loop = 1;
		911	#endif
		912
		913	loop_init (EV_A_ flags);
		914
554	if (ev_method)	915	if (ev_method (EV_A))
555	{	916	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	917	siginit (EV_A);
558		918
		919	#ifndef _WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
		921	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	922	ev_signal_start (EV_A_ &childev);
		923	ev_unref (EV_A); /* child watcher should not keep loop alive */
		924	#endif
561	}	925	}
		926	else
		927	default_loop = 0;
562	}	928	}
563		929
564	return ev_method;	930	return default_loop;
		931	}
		932
		933	void
		934	ev_default_destroy (void)
		935	{
		936	#if EV_MULTIPLICITY
		937	struct ev_loop *loop = default_loop;
		938	#endif
		939
		940	#ifndef _WIN32
		941	ev_ref (EV_A); /* child watcher */
		942	ev_signal_stop (EV_A_ &childev);
		943	#endif
		944
		945	ev_ref (EV_A); /* signal watcher */
		946	ev_io_stop (EV_A_ &sigev);
		947
		948	close (sigpipe [0]); sigpipe [0] = 0;
		949	close (sigpipe [1]); sigpipe [1] = 0;
		950
		951	loop_destroy (EV_A);
		952	}
		953
		954	void
		955	ev_default_fork (void)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = default_loop;
		959	#endif
		960
		961	if (method)
		962	postfork = 1;
565	}	963	}
566		964
567	/*****************************************************************************/	965	/*****************************************************************************/
568		966
569	void
570	ev_fork_prepare (void)
571	{
572	/* nop */
573	}
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif
588
589	ev_io_stop (&sigev);
590	close (sigpipe [0]);
591	close (sigpipe [1]);
592	pipe (sigpipe);
593	siginit ();
594	}
595
596	/*****************************************************************************/
597
598	static void	967	static int
		968	any_pending (EV_P)
		969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
		973	if (pendingcnt [pri])
		974	return 1;
		975
		976	return 0;
		977	}
		978
		979	static void
599	call_pending (void)	980	call_pending (EV_P)
600	{	981	{
601	int pri;	982	int pri;
602		983
603	for (pri = NUMPRI; pri--; )	984	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	985	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		988
608	if (p->w)	989	if (p->w)
609	{	990	{
610	p->w->pending = 0;	991	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
612	}	993	}
613	}	994	}
614	}	995	}
615		996
616	static void	997	static void
617	timers_reify (void)	998	timers_reify (EV_P)
618	{	999	{
619	while (timercnt && timers [0]->at <= now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	1001	{
621	struct ev_timer *w = timers [0];	1002	struct ev_timer *w = timers [0];
		1003
		1004	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		1005
623	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
624	if (w->repeat)	1007	if (w->repeat)
625	{	1008	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1010
627	w->at = now + w->repeat;	1011	((WT)w)->at += w->repeat;
		1012	if (((WT)w)->at < mn_now)
		1013	((WT)w)->at = mn_now;
		1014
628	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
629	}	1016	}
630	else	1017	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		1019
633	event ((W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
634	}	1021	}
635	}	1022	}
636		1023
		1024	#if EV_PERIODICS
637	static void	1025	static void
638	periodics_reify (void)	1026	periodics_reify (EV_P)
639	{	1027	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
641	{	1029	{
642	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
643		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
644	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
645	if (w->interval)	1035	if (w->reschedule_cb)
646	{	1036	{
		1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
650	}	1046	}
651	else	1047	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1049
654	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
655	}	1051	}
656	}	1052	}
657		1053
658	static void	1054	static void
659	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
660	{	1056	{
661	int i;	1057	int i;
662		1058
663	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
665	{	1061	{
666	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
667		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
668	if (w->interval)	1066	else if (w->interval)
669	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
671
672	if (fabs (diff) >= 1e-4)
673	{
674	ev_periodic_stop (w);
675	ev_periodic_start (w);
676
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}
679	}
680	}	1068	}
681	}
682		1069
683	static int	1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
		1073	}
		1074	#endif
		1075
		1076	inline int
684	time_update_monotonic (void)	1077	time_update_monotonic (EV_P)
685	{	1078	{
686	now = get_clock ();	1079	mn_now = get_clock ();
687		1080
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	1082	{
690	ev_now = now + diff;	1083	ev_rt_now = rtmn_diff + mn_now;
691	return 0;	1084	return 0;
692	}	1085	}
693	else	1086	else
694	{	1087	{
695	now_floor = now;	1088	now_floor = mn_now;
696	ev_now = ev_time ();	1089	ev_rt_now = ev_time ();
697	return 1;	1090	return 1;
698	}	1091	}
699	}	1092	}
700		1093
701	static void	1094	static void
702	time_update (void)	1095	time_update (EV_P)
703	{	1096	{
704	int i;	1097	int i;
705		1098
706	#if EV_USE_MONOTONIC	1099	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	1100	if (expect_true (have_monotonic))
708	{	1101	{
709	if (time_update_monotonic ())	1102	if (time_update_monotonic (EV_A))
710	{	1103	{
711	ev_tstamp odiff = diff;	1104	ev_tstamp odiff = rtmn_diff;
712		1105
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	1107	{
715	diff = ev_now - now;	1108	rtmn_diff = ev_rt_now - mn_now;
716		1109
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1111	return; /* all is well */
719		1112
720	ev_now = ev_time ();	1113	ev_rt_now = ev_time ();
721	now = get_clock ();	1114	mn_now = get_clock ();
722	now_floor = now;	1115	now_floor = mn_now;
723	}	1116	}
724		1117
		1118	# if EV_PERIODICS
725	periodics_reschedule (diff - odiff);	1119	periodics_reschedule (EV_A);
		1120	# endif
726	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
		1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	1123	}
728	}	1124	}
729	else	1125	else
730	#endif	1126	#endif
731	{	1127	{
732	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
733		1129
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1131	{
		1132	#if EV_PERIODICS
736	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
737		1135
738	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
741	}	1139	}
742		1140
743	now = ev_now;	1141	mn_now = ev_rt_now;
744	}	1142	}
745	}	1143	}
746		1144
747	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
748		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
749	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
750	{	1161	{
751	double block;	1162	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		1164
754	do	1165	while (activecnt)
755	{	1166	{
756	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
758	{	1169	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1171	call_pending (EV_A);
761	}	1172	}
762		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
763	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
764	fd_reify ();	1179	fd_reify (EV_A);
765		1180
766	/* calculate blocking time */	1181	/* calculate blocking time */
767		1182
768	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
769	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1187	time_update_monotonic (EV_A);
773	else	1188	else
774	#endif	1189	#endif
775	{	1190	{
776	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
777	now = ev_now;	1192	mn_now = ev_rt_now;
778	}	1193	}
779		1194
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	1196	block = 0.;
782	else	1197	else
783	{	1198	{
784	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
785		1200
786	if (timercnt)	1201	if (timercnt)
787	{	1202	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1204	if (block > to) block = to;
790	}	1205	}
791		1206
		1207	#if EV_PERIODICS
792	if (periodiccnt)	1208	if (periodiccnt)
793	{	1209	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
795	if (block > to) block = to;	1211	if (block > to) block = to;
796	}	1212	}
		1213	#endif
797		1214
798	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
799	}	1216	}
800		1217
801	method_poll (block);	1218	method_poll (EV_A_ block);
802		1219
803	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
804	time_update ();	1221	time_update (EV_A);
805		1222
806	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
808	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
809		1228
810	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1232
814	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
815	if (checkcnt)	1234	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1236
818	call_pending ();	1237	call_pending (EV_A);
819	}
820	while (!ev_loop_done);
821		1238
		1239	if (loop_done)
		1240	break;
		1241	}
		1242
822	if (ev_loop_done != 2)	1243	if (loop_done != 2)
823	ev_loop_done = 0;	1244	loop_done = 0;
		1245	}
		1246
		1247	void
		1248	ev_unloop (EV_P_ int how)
		1249	{
		1250	loop_done = how;
824	}	1251	}
825		1252
826	/*****************************************************************************/	1253	/*****************************************************************************/
827		1254
828	static void	1255	inline void
829	wlist_add (WL *head, WL elem)	1256	wlist_add (WL *head, WL elem)
830	{	1257	{
831	elem->next = *head;	1258	elem->next = *head;
832	*head = elem;	1259	*head = elem;
833	}	1260	}
834		1261
835	static void	1262	inline void
836	wlist_del (WL *head, WL elem)	1263	wlist_del (WL *head, WL elem)
837	{	1264	{
838	while (*head)	1265	while (*head)
839	{	1266	{
840	if (*head == elem)	1267	if (*head == elem)
…		…
845		1272
846	head = &(*head)->next;	1273	head = &(*head)->next;
847	}	1274	}
848	}	1275	}
849		1276
850	static void	1277	inline void
851	ev_clear_pending (W w)	1278	ev_clear_pending (EV_P_ W w)
852	{	1279	{
853	if (w->pending)	1280	if (w->pending)
854	{	1281	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1282	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1283	w->pending = 0;
857	}	1284	}
858	}	1285	}
859		1286
860	static void	1287	inline void
861	ev_start (W w, int active)	1288	ev_start (EV_P_ W w, int active)
862	{	1289	{
		1290	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1291	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1292
863	w->active = active;	1293	w->active = active;
		1294	ev_ref (EV_A);
864	}	1295	}
865		1296
866	static void	1297	inline void
867	ev_stop (W w)	1298	ev_stop (EV_P_ W w)
868	{	1299	{
		1300	ev_unref (EV_A);
869	w->active = 0;	1301	w->active = 0;
870	}	1302	}
871		1303
872	/*****************************************************************************/	1304	/*****************************************************************************/
873		1305
874	void	1306	void
875	ev_io_start (struct ev_io *w)	1307	ev_io_start (EV_P_ struct ev_io *w)
876	{	1308	{
877	int fd = w->fd;	1309	int fd = w->fd;
878		1310
879	if (ev_is_active (w))	1311	if (ev_is_active (w))
880	return;	1312	return;
881		1313
882	assert (("ev_io_start called with negative fd", fd >= 0));	1314	assert (("ev_io_start called with negative fd", fd >= 0));
883		1315
884	ev_start ((W)w, 1);	1316	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1317	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1318	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1319
888	fd_change (fd);	1320	fd_change (EV_A_ fd);
889	}	1321	}
890		1322
891	void	1323	void
892	ev_io_stop (struct ev_io *w)	1324	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1325	{
894	ev_clear_pending ((W)w);	1326	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
896	return;	1328	return;
897		1329
		1330	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1331
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1332	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1333	ev_stop (EV_A_ (W)w);
900		1334
901	fd_change (w->fd);	1335	fd_change (EV_A_ w->fd);
902	}	1336	}
903		1337
904	void	1338	void
905	ev_timer_start (struct ev_timer *w)	1339	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1340	{
907	if (ev_is_active (w))	1341	if (ev_is_active (w))
908	return;	1342	return;
909		1343
910	w->at += now;	1344	((WT)w)->at += mn_now;
911		1345
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1346	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1347
914	ev_start ((W)w, ++timercnt);	1348	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1349	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
916	timers [timercnt - 1] = w;	1350	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1351	upheap ((WT *)timers, timercnt - 1);
918	}
919		1352
		1353	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1354	}
		1355
920	void	1356	void
921	ev_timer_stop (struct ev_timer *w)	1357	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1358	{
923	ev_clear_pending ((W)w);	1359	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
925	return;	1361	return;
926		1362
		1363	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1364
927	if (w->active < timercnt--)	1365	if (((W)w)->active < timercnt--)
928	{	1366	{
929	timers [w->active - 1] = timers [timercnt];	1367	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1368	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1369	}
932		1370
933	w->at = w->repeat;	1371	((WT)w)->at -= mn_now;
934		1372
935	ev_stop ((W)w);	1373	ev_stop (EV_A_ (W)w);
936	}	1374	}
937		1375
938	void	1376	void
939	ev_timer_again (struct ev_timer *w)	1377	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1378	{
941	if (ev_is_active (w))	1379	if (ev_is_active (w))
942	{	1380	{
943	if (w->repeat)	1381	if (w->repeat)
944	{	1382	{
945	w->at = now + w->repeat;	1383	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1384	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1385	}
948	else	1386	else
949	ev_timer_stop (w);	1387	ev_timer_stop (EV_A_ w);
950	}	1388	}
951	else if (w->repeat)	1389	else if (w->repeat)
		1390	{
		1391	w->at = w->repeat;
952	ev_timer_start (w);	1392	ev_timer_start (EV_A_ w);
		1393	}
953	}	1394	}
954		1395
		1396	#if EV_PERIODICS
955	void	1397	void
956	ev_periodic_start (struct ev_periodic *w)	1398	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1399	{
958	if (ev_is_active (w))	1400	if (ev_is_active (w))
959	return;	1401	return;
960		1402
		1403	if (w->reschedule_cb)
		1404	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1405	else if (w->interval)
		1406	{
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1407	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1408	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1409	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1410	}
966		1411
967	ev_start ((W)w, ++periodiccnt);	1412	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1413	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
969	periodics [periodiccnt - 1] = w;	1414	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1415	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1416
		1417	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1418	}
		1419
973	void	1420	void
974	ev_periodic_stop (struct ev_periodic *w)	1421	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1422	{
976	ev_clear_pending ((W)w);	1423	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1424	if (!ev_is_active (w))
978	return;	1425	return;
979		1426
		1427	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1428
980	if (w->active < periodiccnt--)	1429	if (((W)w)->active < periodiccnt--)
981	{	1430	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1431	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1432	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1433	}
985		1434
986	ev_stop ((W)w);	1435	ev_stop (EV_A_ (W)w);
987	}	1436	}
988		1437
989	void	1438	void
		1439	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1440	{
		1441	/* TODO: use adjustheap and recalculation */
		1442	ev_periodic_stop (EV_A_ w);
		1443	ev_periodic_start (EV_A_ w);
		1444	}
		1445	#endif
		1446
		1447	void
990	ev_signal_start (struct ev_signal *w)	1448	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1449	{
992	if (ev_is_active (w))	1450	if (ev_is_active (w))
993	return;	1451	return;
994		1452
		1453	ev_start (EV_A_ (W)w, ++idlecnt);
		1454	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1455	idles [idlecnt - 1] = w;
		1456	}
		1457
		1458	void
		1459	ev_idle_stop (EV_P_ struct ev_idle *w)
		1460	{
		1461	ev_clear_pending (EV_A_ (W)w);
		1462	if (!ev_is_active (w))
		1463	return;
		1464
		1465	idles [((W)w)->active - 1] = idles [--idlecnt];
		1466	ev_stop (EV_A_ (W)w);
		1467	}
		1468
		1469	void
		1470	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1471	{
		1472	if (ev_is_active (w))
		1473	return;
		1474
		1475	ev_start (EV_A_ (W)w, ++preparecnt);
		1476	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1477	prepares [preparecnt - 1] = w;
		1478	}
		1479
		1480	void
		1481	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1482	{
		1483	ev_clear_pending (EV_A_ (W)w);
		1484	if (!ev_is_active (w))
		1485	return;
		1486
		1487	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1488	ev_stop (EV_A_ (W)w);
		1489	}
		1490
		1491	void
		1492	ev_check_start (EV_P_ struct ev_check *w)
		1493	{
		1494	if (ev_is_active (w))
		1495	return;
		1496
		1497	ev_start (EV_A_ (W)w, ++checkcnt);
		1498	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1499	checks [checkcnt - 1] = w;
		1500	}
		1501
		1502	void
		1503	ev_check_stop (EV_P_ struct ev_check *w)
		1504	{
		1505	ev_clear_pending (EV_A_ (W)w);
		1506	if (!ev_is_active (w))
		1507	return;
		1508
		1509	checks [((W)w)->active - 1] = checks [--checkcnt];
		1510	ev_stop (EV_A_ (W)w);
		1511	}
		1512
		1513	#ifndef SA_RESTART
		1514	# define SA_RESTART 0
		1515	#endif
		1516
		1517	void
		1518	ev_signal_start (EV_P_ struct ev_signal *w)
		1519	{
		1520	#if EV_MULTIPLICITY
		1521	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1522	#endif
		1523	if (ev_is_active (w))
		1524	return;
		1525
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1526	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1527
997	ev_start ((W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1529	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1530	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1531
1001	if (!w->next)	1532	if (!((WL)w)->next)
1002	{	1533	{
		1534	#if _WIN32
		1535	signal (w->signum, sighandler);
		1536	#else
1003	struct sigaction sa;	1537	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1538	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1539	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1540	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1541	sigaction (w->signum, &sa, 0);
		1542	#endif
1008	}	1543	}
1009	}	1544	}
1010		1545
1011	void	1546	void
1012	ev_signal_stop (struct ev_signal *w)	1547	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1548	{
1014	ev_clear_pending ((W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1550	if (!ev_is_active (w))
1016	return;	1551	return;
1017		1552
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1553	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1554	ev_stop (EV_A_ (W)w);
1020		1555
1021	if (!signals [w->signum - 1].head)	1556	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1557	signal (w->signum, SIG_DFL);
1023	}	1558	}
1024		1559
1025	void	1560	void
1026	ev_idle_start (struct ev_idle *w)	1561	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1562	{
		1563	#if EV_MULTIPLICITY
		1564	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1565	#endif
1028	if (ev_is_active (w))	1566	if (ev_is_active (w))
1029	return;	1567	return;
1030		1568
1031	ev_start ((W)w, ++idlecnt);
1032	array_needsize (idles, idlemax, idlecnt, );
1033	idles [idlecnt - 1] = w;
1034	}
1035
1036	void
1037	ev_idle_stop (struct ev_idle *w)
1038	{
1039	ev_clear_pending ((W)w);
1040	if (ev_is_active (w))
1041	return;
1042
1043	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);
1045	}
1046
1047	void
1048	ev_prepare_start (struct ev_prepare *w)
1049	{
1050	if (ev_is_active (w))
1051	return;
1052
1053	ev_start ((W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;
1056	}
1057
1058	void
1059	ev_prepare_stop (struct ev_prepare *w)
1060	{
1061	ev_clear_pending ((W)w);
1062	if (ev_is_active (w))
1063	return;
1064
1065	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);
1067	}
1068
1069	void
1070	ev_check_start (struct ev_check *w)
1071	{
1072	if (ev_is_active (w))
1073	return;
1074
1075	ev_start ((W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;
1078	}
1079
1080	void
1081	ev_check_stop (struct ev_check *w)
1082	{
1083	ev_clear_pending ((W)w);
1084	if (ev_is_active (w))
1085	return;
1086
1087	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);
1089	}
1090
1091	void
1092	ev_child_start (struct ev_child *w)
1093	{
1094	if (ev_is_active (w))
1095	return;
1096
1097	ev_start ((W)w, 1);	1569	ev_start (EV_A_ (W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1570	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}	1571	}
1100		1572
1101	void	1573	void
1102	ev_child_stop (struct ev_child *w)	1574	ev_child_stop (EV_P_ struct ev_child *w)
1103	{	1575	{
1104	ev_clear_pending ((W)w);	1576	ev_clear_pending (EV_A_ (W)w);
1105	if (ev_is_active (w))	1577	if (!ev_is_active (w))
1106	return;	1578	return;
1107		1579
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1580	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1581	ev_stop (EV_A_ (W)w);
1110	}	1582	}
1111		1583
1112	/*****************************************************************************/	1584	/*****************************************************************************/
1113		1585
1114	struct ev_once	1586	struct ev_once
…		…
1118	void (cb)(int revents, void arg);	1590	void (cb)(int revents, void arg);
1119	void *arg;	1591	void *arg;
1120	};	1592	};
1121		1593
1122	static void	1594	static void
1123	once_cb (struct ev_once *once, int revents)	1595	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1596	{
1125	void (cb)(int revents, void arg) = once->cb;	1597	void (cb)(int revents, void arg) = once->cb;
1126	void *arg = once->arg;	1598	void *arg = once->arg;
1127		1599
1128	ev_io_stop (&once->io);	1600	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1601	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1602	ev_free (once);
1131		1603
1132	cb (revents, arg);	1604	cb (revents, arg);
1133	}	1605	}
1134		1606
1135	static void	1607	static void
1136	once_cb_io (struct ev_io *w, int revents)	1608	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1609	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1610	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1139	}	1611	}
1140		1612
1141	static void	1613	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1614	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1615	{
1144	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1616	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1145	}	1617	}
1146		1618
1147	void	1619	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1620	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1149	{	1621	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1622	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1151		1623
1152	if (!once)	1624	if (!once)
1153	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1625	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1154	else	1626	else
1155	{	1627	{
1156	once->cb = cb;	1628	once->cb = cb;
1157	once->arg = arg;	1629	once->arg = arg;
1158		1630
1159	ev_watcher_init (&once->io, once_cb_io);	1631	ev_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1632	if (fd >= 0)
1161	{	1633	{
1162	ev_io_set (&once->io, fd, events);	1634	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1635	ev_io_start (EV_A_ &once->io);
1164	}	1636	}
1165		1637
1166	ev_watcher_init (&once->to, once_cb_to);	1638	ev_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1639	if (timeout >= 0.)
1168	{	1640	{
1169	ev_timer_set (&once->to, timeout, 0.);	1641	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1642	ev_timer_start (EV_A_ &once->to);
1171	}	1643	}
1172	}	1644	}
1173	}	1645	}
1174		1646
1175	/*****************************************************************************/	1647	#ifdef __cplusplus
1176
1177	#if 0
1178
1179	struct ev_io wio;
1180
1181	static void
1182	sin_cb (struct ev_io *w, int revents)
1183	{
1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1185	}	1648	}
1186
1187	static void
1188	ocb (struct ev_timer *w, int revents)
1189	{
1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1191	ev_timer_stop (w);
1192	ev_timer_start (w);
1193	}
1194
1195	static void
1196	scb (struct ev_signal *w, int revents)
1197	{
1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1199	ev_io_stop (&wio);
1200	ev_io_start (&wio);
1201	}
1202
1203	static void
1204	gcb (struct ev_signal *w, int revents)
1205	{
1206	fprintf (stderr, "generic %x\n", revents);
1207
1208	}
1209
1210	int main (void)
1211	{
1212	ev_init (0);
1213
1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
1215	ev_io_start (&wio);
1216
1217	struct ev_timer t[10000];
1218
1219	#if 0
1220	int i;
1221	for (i = 0; i < 10000; ++i)
1222	{
1223	struct ev_timer *w = t + i;
1224	ev_watcher_init (w, ocb, i);
1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1226	ev_timer_start (w);
1227	if (drand48 () < 0.5)
1228	ev_timer_stop (w);
1229	}
1230	#endif	1649	#endif
1231		1650
1232	struct ev_timer t1;
1233	ev_timer_init (&t1, ocb, 5, 10);
1234	ev_timer_start (&t1);
1235
1236	struct ev_signal sig;
1237	ev_signal_init (&sig, scb, SIGQUIT);
1238	ev_signal_start (&sig);
1239
1240	struct ev_check cw;
1241	ev_check_init (&cw, gcb);
1242	ev_check_start (&cw);
1243
1244	struct ev_idle iw;
1245	ev_idle_init (&iw, gcb);
1246	ev_idle_start (&iw);
1247
1248	ev_loop (0);
1249
1250	return 0;
1251	}
1252
1253	#endif
1254
1255
1256
1257

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Comparing libev/ev.c (file contents): Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs. Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC