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

Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 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>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# include <sys/wait.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
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
57	#endif	96	#endif
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
61	#endif	101	#endif
62		102
63	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
64	# 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
65	#endif	109	#endif
66		110
67	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
69	#endif	113	#endif
…		…
75	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
77	#endif	121	#endif
78		122
79	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
80		130
81	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
84	#endif	134	#endif
85		135
86	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
89	#endif	143	#endif
90		144
91	/**/	145	/**/
92		146
93	#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) */
94	#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) */
95	#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 */
96	/#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 */
97		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
98	#include "ev.h"	155	# include "ev.h"
		156	#endif
99		157
100	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	160	# define inline inline
103	#else	161	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
110		168
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
114	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
117		178
118	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
119	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
120	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
121		272
122	static int have_monotonic; /* runtime */	273	static int default_loop;
123		274
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		276
128	/*****************************************************************************/	277	/*****************************************************************************/
129		278
130	ev_tstamp	279	ev_tstamp
131	ev_time (void)	280	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	290	#endif
142	}	291	}
143		292
144	static ev_tstamp	293	inline ev_tstamp
145	get_clock (void)	294	get_clock (void)
146	{	295	{
147	#if EV_USE_MONOTONIC	296	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	297	if (expect_true (have_monotonic))
149	{	298	{
…		…
154	#endif	303	#endif
155		304
156	return ev_time ();	305	return ev_time ();
157	}	306	}
158		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		317
161	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
163	{ \	320	{ \
164	int newcnt = cur; \	321	int newcnt = cur; \
165	do \	322	do \
166	{ \	323	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	325	} \
169	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
170	\	327	\
171	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	330	cur = newcnt; \
174	}	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;
175		343
176	/*****************************************************************************/	344	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		345
188	static void	346	static void
189	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
190	{	348	{
191	while (count--)	349	while (count--)
…		…
196		354
197	++base;	355	++base;
198	}	356	}
199	}	357	}
200		358
201	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
202	{	361	{
203	W w;	362	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		363
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)	364	if (w_->pending)
214	{	365	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	367	return;
217	}	368	}
218		369
219	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	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);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	374	}
224		375
225	static void	376	static void
226	queue_events (W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	378	{
228	int i;	379	int i;
229		380
230	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
232	}	383	}
233		384
234	static void	385	inline void
235	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
236	{	387	{
237	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	389	struct ev_io *w;
239		390
240	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	392	{
242	int ev = w->events & events;	393	int ev = w->events & revents;
243		394
244	if (ev)	395	if (ev)
245	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
246	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
247	}	404	}
248		405
249	/*****************************************************************************/	406	/*****************************************************************************/
250		407
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	408	static void
255	fd_reify (void)	409	fd_reify (EV_P)
256	{	410	{
257	int i;	411	int i;
258		412
259	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
260	{	414	{
…		…
262	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	417	struct ev_io *w;
264		418
265	int events = 0;	419	int events = 0;
266		420
267	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	422	events \|= w->events;
269		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
270	anfd->reify = 0;	433	anfd->reify = 0;
271		434
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	436	anfd->events = events;
276	}
277	}	437	}
278		438
279	fdchangecnt = 0;	439	fdchangecnt = 0;
280	}	440	}
281		441
282	static void	442	static void
283	fd_change (int fd)	443	fd_change (EV_P_ int fd)
284	{	444	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
286	return;	446	return;
287		447
288	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
289		449
290	++fdchangecnt;	450	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
293	}	453	}
294		454
295	static void	455	static void
296	fd_kill (int fd)	456	fd_kill (EV_P_ int fd)
297	{	457	{
298	struct ev_io *w;	458	struct ev_io *w;
299		459
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
302	{	461	{
303	ev_io_stop (w);	462	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	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
306	}	475	}
307		476
308	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
309	static void	478	static void
310	fd_ebadf (void)	479	fd_ebadf (EV_P)
311	{	480	{
312	int fd;	481	int fd;
313		482
314	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	484	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	486	fd_kill (EV_A_ fd);
318	}	487	}
319		488
320	/* 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 */
321	static void	490	static void
322	fd_enomem (void)	491	fd_enomem (EV_P)
323	{	492	{
324	int fd = anfdmax;	493	int fd;
325		494
326	while (fd--)	495	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	496	if (anfds [fd].events)
328	{	497	{
329	close (fd);
330	fd_kill (fd);	498	fd_kill (EV_A_ fd);
331	return;	499	return;
332	}	500	}
333	}	501	}
334		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
335	/*****************************************************************************/	518	/*****************************************************************************/
336		519
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	520	static void
344	upheap (WT *timers, int k)	521	upheap (WT *heap, int k)
345	{	522	{
346	WT w = timers [k];	523	WT w = heap [k];
347		524
348	while (k && timers [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
349	{	526	{
350	timers [k] = timers [k >> 1];	527	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
352	k >>= 1;	529	k >>= 1;
353	}	530	}
354		531
355	timers [k] = w;	532	heap [k] = w;
356	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
357		534
358	}	535	}
359		536
360	static void	537	static void
361	downheap (WT *timers, int N, int k)	538	downheap (WT *heap, int N, int k)
362	{	539	{
363	WT w = timers [k];	540	WT w = heap [k];
364		541
365	while (k < (N >> 1))	542	while (k < (N >> 1))
366	{	543	{
367	int j = k << 1;	544	int j = k << 1;
368		545
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	547	++j;
371		548
372	if (w->at <= timers [j]->at)	549	if (w->at <= heap [j]->at)
373	break;	550	break;
374		551
375	timers [k] = timers [j];	552	heap [k] = heap [j];
376	timers [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
377	k = j;	554	k = j;
378	}	555	}
379		556
380	timers [k] = w;	557	heap [k] = w;
381	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);
382	}	566	}
383		567
384	/*****************************************************************************/	568	/*****************************************************************************/
385		569
386	typedef struct	570	typedef struct
387	{	571	{
388	struct ev_signal *head;	572	WL head;
389	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
390	} ANSIG;	574	} ANSIG;
391		575
392	static ANSIG *signals;	576	static ANSIG *signals;
393	static int signalmax;	577	static int signalmax;
…		…
409	}	593	}
410		594
411	static void	595	static void
412	sighandler (int signum)	596	sighandler (int signum)
413	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
414	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
415		603
416	if (!gotsig)	604	if (!gotsig)
417	{	605	{
		606	int old_errno = errno;
418	gotsig = 1;	607	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
420	}	610	}
421	}	611	}
422		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
423	static void	633	static void
424	sigcb (struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	635	{
426	struct ev_signal *w;
427	int signum;	636	int signum;
428		637
429	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	639	gotsig = 0;
431		640
432	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
434	{	643	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	644	}
441		645
442	static void	646	inline void
443	siginit (void)	647	fd_intern (int fd)
444	{	648	{
445	#ifndef WIN32	649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	653	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	654	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	655	#endif
		656	}
		657
		658	static void
		659	siginit (EV_P)
		660	{
		661	fd_intern (sigpipe [0]);
		662	fd_intern (sigpipe [1]);
453		663
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	667	}
457		668
458	/*****************************************************************************/	669	/*****************************************************************************/
459		670
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
472	static struct ev_signal childev;	675	static struct ev_signal childev;
473
474	#ifndef WIN32
475		676
476	#ifndef WCONTINUED	677	#ifndef WCONTINUED
477	# define WCONTINUED 0	678	# define WCONTINUED 0
478	#endif	679	#endif
479		680
480	static void	681	static void
481	childcb (struct ev_signal *sw, int revents)	682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	683	{
483	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	{
484	int pid, status;	699	int pid, status;
485		700
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	702	{
488	if (w->pid == pid \|\| !w->pid)	703	/* make sure we are called again until all childs have been reaped */
489	{	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	705
491	w->rstatus = status;	706	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	708	}
494	}	709	}
495		710
496	#endif	711	#endif
497		712
498	/*****************************************************************************/	713	/*****************************************************************************/
…		…
520	ev_version_minor (void)	735	ev_version_minor (void)
521	{	736	{
522	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
523	}	738	}
524		739
525	/* 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 */
526	static int	741	static int
527	enable_secure ()	742	enable_secure (void)
528	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
529	return getuid () != geteuid ()	747	return getuid () != geteuid ()
530	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
		749	#endif
531	}	750	}
532		751
533	int ev_init (int methods)	752	unsigned int
		753	ev_method (EV_P)
534	{	754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
535	if (!ev_method)	761	if (!method)
536	{	762	{
537	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
538	{	764	{
539	struct timespec ts;	765	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	767	have_monotonic = 1;
542	}	768	}
543	#endif	769	#endif
544		770
545	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
546	now = get_clock ();	772	mn_now = get_clock ();
547	now_floor = now;	773	now_floor = mn_now;
548	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
549		775
550	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
551	return 0;
552
553	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
556	else
557	methods = EVMETHOD_ANY;
558		778
		779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
559	ev_method = 0;	782	method = 0;
560	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
562	#endif	785	#endif
563	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
565	#endif	788	#endif
566	#if EV_USE_POLL	789	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
568	#endif	791	#endif
569	#if EV_USE_SELECT	792	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
571	#endif	794	#endif
572		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
573	if (ev_method)	915	if (ev_method (EV_A))
574	{	916	{
575	ev_watcher_init (&sigev, sigcb);
576	siginit ();	917	siginit (EV_A);
577		918
578	#ifndef WIN32	919	#ifndef _WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
		921	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	922	ev_signal_start (EV_A_ &childev);
		923	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	924	#endif
582	}	925	}
		926	else
		927	default_loop = 0;
583	}	928	}
584		929
585	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;
586	}	963	}
587		964
588	/*****************************************************************************/	965	/*****************************************************************************/
589		966
590	void
591	ev_fork_prepare (void)
592	{
593	/* nop */
594	}
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif
609
610	ev_io_stop (&sigev);
611	close (sigpipe [0]);
612	close (sigpipe [1]);
613	pipe (sigpipe);
614	siginit ();
615	}
616
617	/*****************************************************************************/
618
619	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
620	call_pending (void)	980	call_pending (EV_P)
621	{	981	{
622	int pri;	982	int pri;
623		983
624	for (pri = NUMPRI; pri--; )	984	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	985	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		988
629	if (p->w)	989	if (p->w)
630	{	990	{
631	p->w->pending = 0;	991	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
633	}	993	}
634	}	994	}
635	}	995	}
636		996
637	static void	997	static void
638	timers_reify (void)	998	timers_reify (EV_P)
639	{	999	{
640	while (timercnt && timers [0]->at <= now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	1001	{
642	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)));
643		1005
644	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
645	if (w->repeat)	1007	if (w->repeat)
646	{	1008	{
647	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
648	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
649	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
650	}	1016	}
651	else	1017	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1019
654	event ((W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
655	}	1021	}
656	}	1022	}
657		1023
		1024	#if EV_PERIODICS
658	static void	1025	static void
659	periodics_reify (void)	1026	periodics_reify (EV_P)
660	{	1027	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
662	{	1029	{
663	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
664		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
665	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
666	if (w->interval)	1035	if (w->reschedule_cb)
667	{	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	{
668	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;
669	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));
670	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
671	}	1046	}
672	else	1047	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1049
675	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
676	}	1051	}
677	}	1052	}
678		1053
679	static void	1054	static void
680	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
681	{	1056	{
682	int i;	1057	int i;
683		1058
684	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
686	{	1061	{
687	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
688		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
689	if (w->interval)	1066	else if (w->interval)
690	{
691	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;
692
693	if (fabs (diff) >= 1e-4)
694	{
695	ev_periodic_stop (w);
696	ev_periodic_start (w);
697
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}
700	}
701	}	1068	}
702	}
703		1069
704	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
705	time_update_monotonic (void)	1077	time_update_monotonic (EV_P)
706	{	1078	{
707	now = get_clock ();	1079	mn_now = get_clock ();
708		1080
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	1082	{
711	ev_now = now + diff;	1083	ev_rt_now = rtmn_diff + mn_now;
712	return 0;	1084	return 0;
713	}	1085	}
714	else	1086	else
715	{	1087	{
716	now_floor = now;	1088	now_floor = mn_now;
717	ev_now = ev_time ();	1089	ev_rt_now = ev_time ();
718	return 1;	1090	return 1;
719	}	1091	}
720	}	1092	}
721		1093
722	static void	1094	static void
723	time_update (void)	1095	time_update (EV_P)
724	{	1096	{
725	int i;	1097	int i;
726		1098
727	#if EV_USE_MONOTONIC	1099	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	1100	if (expect_true (have_monotonic))
729	{	1101	{
730	if (time_update_monotonic ())	1102	if (time_update_monotonic (EV_A))
731	{	1103	{
732	ev_tstamp odiff = diff;	1104	ev_tstamp odiff = rtmn_diff;
733		1105
734	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 */
735	{	1107	{
736	diff = ev_now - now;	1108	rtmn_diff = ev_rt_now - mn_now;
737		1109
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	1111	return; /* all is well */
740		1112
741	ev_now = ev_time ();	1113	ev_rt_now = ev_time ();
742	now = get_clock ();	1114	mn_now = get_clock ();
743	now_floor = now;	1115	now_floor = mn_now;
744	}	1116	}
745		1117
		1118	# if EV_PERIODICS
746	periodics_reschedule (diff - odiff);	1119	periodics_reschedule (EV_A);
		1120	# endif
747	/* 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) */
748	}	1123	}
749	}	1124	}
750	else	1125	else
751	#endif	1126	#endif
752	{	1127	{
753	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
754		1129
755	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))
756	{	1131	{
		1132	#if EV_PERIODICS
757	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
758		1135
759	/* 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 */
760	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
762	}	1139	}
763		1140
764	now = ev_now;	1141	mn_now = ev_rt_now;
765	}	1142	}
766	}	1143	}
767		1144
768	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
769		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
770	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
771	{	1161	{
772	double block;	1162	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
774		1164
775	do	1165	while (activecnt)
776	{	1166	{
777	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
779	{	1169	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	1171	call_pending (EV_A);
782	}	1172	}
783		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
784	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
785	fd_reify ();	1179	fd_reify (EV_A);
786		1180
787	/* calculate blocking time */	1181	/* calculate blocking time */
788		1182
789	/* 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
790	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1187	time_update_monotonic (EV_A);
794	else	1188	else
795	#endif	1189	#endif
796	{	1190	{
797	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
798	now = ev_now;	1192	mn_now = ev_rt_now;
799	}	1193	}
800		1194
801	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
802	block = 0.;	1196	block = 0.;
803	else	1197	else
804	{	1198	{
805	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
806		1200
807	if (timercnt)	1201	if (timercnt)
808	{	1202	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1204	if (block > to) block = to;
811	}	1205	}
812		1206
		1207	#if EV_PERIODICS
813	if (periodiccnt)	1208	if (periodiccnt)
814	{	1209	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
816	if (block > to) block = to;	1211	if (block > to) block = to;
817	}	1212	}
		1213	#endif
818		1214
819	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
820	}	1216	}
821		1217
822	method_poll (block);	1218	method_poll (EV_A_ block);
823		1219
824	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
825	time_update ();	1221	time_update (EV_A);
826		1222
827	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
829	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
830		1228
831	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1232
835	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
836	if (checkcnt)	1234	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1236
839	call_pending ();	1237	call_pending (EV_A);
840	}
841	while (!ev_loop_done);
842		1238
		1239	if (loop_done)
		1240	break;
		1241	}
		1242
843	if (ev_loop_done != 2)	1243	if (loop_done != 2)
844	ev_loop_done = 0;	1244	loop_done = 0;
		1245	}
		1246
		1247	void
		1248	ev_unloop (EV_P_ int how)
		1249	{
		1250	loop_done = how;
845	}	1251	}
846		1252
847	/*****************************************************************************/	1253	/*****************************************************************************/
848		1254
849	static void	1255	inline void
850	wlist_add (WL *head, WL elem)	1256	wlist_add (WL *head, WL elem)
851	{	1257	{
852	elem->next = *head;	1258	elem->next = *head;
853	*head = elem;	1259	*head = elem;
854	}	1260	}
855		1261
856	static void	1262	inline void
857	wlist_del (WL *head, WL elem)	1263	wlist_del (WL *head, WL elem)
858	{	1264	{
859	while (*head)	1265	while (*head)
860	{	1266	{
861	if (*head == elem)	1267	if (*head == elem)
…		…
866		1272
867	head = &(*head)->next;	1273	head = &(*head)->next;
868	}	1274	}
869	}	1275	}
870		1276
871	static void	1277	inline void
872	ev_clear_pending (W w)	1278	ev_clear_pending (EV_P_ W w)
873	{	1279	{
874	if (w->pending)	1280	if (w->pending)
875	{	1281	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1282	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1283	w->pending = 0;
878	}	1284	}
879	}	1285	}
880		1286
881	static void	1287	inline void
882	ev_start (W w, int active)	1288	ev_start (EV_P_ W w, int active)
883	{	1289	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1290	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1291	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1292
887	w->active = active;	1293	w->active = active;
		1294	ev_ref (EV_A);
888	}	1295	}
889		1296
890	static void	1297	inline void
891	ev_stop (W w)	1298	ev_stop (EV_P_ W w)
892	{	1299	{
		1300	ev_unref (EV_A);
893	w->active = 0;	1301	w->active = 0;
894	}	1302	}
895		1303
896	/*****************************************************************************/	1304	/*****************************************************************************/
897		1305
898	void	1306	void
899	ev_io_start (struct ev_io *w)	1307	ev_io_start (EV_P_ struct ev_io *w)
900	{	1308	{
901	int fd = w->fd;	1309	int fd = w->fd;
902		1310
903	if (ev_is_active (w))	1311	if (ev_is_active (w))
904	return;	1312	return;
905		1313
906	assert (("ev_io_start called with negative fd", fd >= 0));	1314	assert (("ev_io_start called with negative fd", fd >= 0));
907		1315
908	ev_start ((W)w, 1);	1316	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1317	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1318	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1319
912	fd_change (fd);	1320	fd_change (EV_A_ fd);
913	}	1321	}
914		1322
915	void	1323	void
916	ev_io_stop (struct ev_io *w)	1324	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1325	{
918	ev_clear_pending ((W)w);	1326	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
920	return;	1328	return;
921		1329
		1330	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1331
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1332	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1333	ev_stop (EV_A_ (W)w);
924		1334
925	fd_change (w->fd);	1335	fd_change (EV_A_ w->fd);
926	}	1336	}
927		1337
928	void	1338	void
929	ev_timer_start (struct ev_timer *w)	1339	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1340	{
931	if (ev_is_active (w))	1341	if (ev_is_active (w))
932	return;	1342	return;
933		1343
934	w->at += now;	1344	((WT)w)->at += mn_now;
935		1345
936	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.));
937		1347
938	ev_start ((W)w, ++timercnt);	1348	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1349	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
940	timers [timercnt - 1] = w;	1350	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1351	upheap ((WT *)timers, timercnt - 1);
942	}
943		1352
		1353	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1354	}
		1355
944	void	1356	void
945	ev_timer_stop (struct ev_timer *w)	1357	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1358	{
947	ev_clear_pending ((W)w);	1359	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
949	return;	1361	return;
950		1362
		1363	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1364
951	if (w->active < timercnt--)	1365	if (((W)w)->active < timercnt--)
952	{	1366	{
953	timers [w->active - 1] = timers [timercnt];	1367	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1368	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1369	}
956		1370
957	w->at = w->repeat;	1371	((WT)w)->at -= mn_now;
958		1372
959	ev_stop ((W)w);	1373	ev_stop (EV_A_ (W)w);
960	}	1374	}
961		1375
962	void	1376	void
963	ev_timer_again (struct ev_timer *w)	1377	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1378	{
965	if (ev_is_active (w))	1379	if (ev_is_active (w))
966	{	1380	{
967	if (w->repeat)	1381	if (w->repeat)
968	{	1382	{
969	w->at = now + w->repeat;	1383	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1384	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1385	}
972	else	1386	else
973	ev_timer_stop (w);	1387	ev_timer_stop (EV_A_ w);
974	}	1388	}
975	else if (w->repeat)	1389	else if (w->repeat)
		1390	{
		1391	w->at = w->repeat;
976	ev_timer_start (w);	1392	ev_timer_start (EV_A_ w);
		1393	}
977	}	1394	}
978		1395
		1396	#if EV_PERIODICS
979	void	1397	void
980	ev_periodic_start (struct ev_periodic *w)	1398	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1399	{
982	if (ev_is_active (w))	1400	if (ev_is_active (w))
983	return;	1401	return;
984		1402
		1403	if (w->reschedule_cb)
		1404	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1405	else if (w->interval)
		1406	{
985	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.));
986
987	/* 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 */
988	if (w->interval)
989	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	}
990		1411
991	ev_start ((W)w, ++periodiccnt);	1412	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1413	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
993	periodics [periodiccnt - 1] = w;	1414	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1415	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1416
		1417	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1418	}
		1419
997	void	1420	void
998	ev_periodic_stop (struct ev_periodic *w)	1421	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1422	{
1000	ev_clear_pending ((W)w);	1423	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1424	if (!ev_is_active (w))
1002	return;	1425	return;
1003		1426
		1427	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1428
1004	if (w->active < periodiccnt--)	1429	if (((W)w)->active < periodiccnt--)
1005	{	1430	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1431	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1432	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1433	}
1009		1434
1010	ev_stop ((W)w);	1435	ev_stop (EV_A_ (W)w);
1011	}	1436	}
1012		1437
1013	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
1014	ev_signal_start (struct ev_signal *w)	1448	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1449	{
1016	if (ev_is_active (w))	1450	if (ev_is_active (w))
1017	return;	1451	return;
1018		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
1019	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));
1020		1527
1021	ev_start ((W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1529	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1530	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1531
1025	if (!w->next)	1532	if (!((WL)w)->next)
1026	{	1533	{
		1534	#if _WIN32
		1535	signal (w->signum, sighandler);
		1536	#else
1027	struct sigaction sa;	1537	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1538	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1539	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1540	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1541	sigaction (w->signum, &sa, 0);
		1542	#endif
1032	}	1543	}
1033	}	1544	}
1034		1545
1035	void	1546	void
1036	ev_signal_stop (struct ev_signal *w)	1547	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1548	{
1038	ev_clear_pending ((W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1550	if (!ev_is_active (w))
1040	return;	1551	return;
1041		1552
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1553	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1554	ev_stop (EV_A_ (W)w);
1044		1555
1045	if (!signals [w->signum - 1].head)	1556	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1557	signal (w->signum, SIG_DFL);
1047	}	1558	}
1048		1559
1049	void	1560	void
1050	ev_idle_start (struct ev_idle *w)	1561	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1562	{
		1563	#if EV_MULTIPLICITY
		1564	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1565	#endif
1052	if (ev_is_active (w))	1566	if (ev_is_active (w))
1053	return;	1567	return;
1054		1568
1055	ev_start ((W)w, ++idlecnt);
1056	array_needsize (idles, idlemax, idlecnt, );
1057	idles [idlecnt - 1] = w;
1058	}
1059
1060	void
1061	ev_idle_stop (struct ev_idle *w)
1062	{
1063	ev_clear_pending ((W)w);
1064	if (ev_is_active (w))
1065	return;
1066
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);	1569	ev_start (EV_A_ (W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1570	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}	1571	}
1124		1572
1125	void	1573	void
1126	ev_child_stop (struct ev_child *w)	1574	ev_child_stop (EV_P_ struct ev_child *w)
1127	{	1575	{
1128	ev_clear_pending ((W)w);	1576	ev_clear_pending (EV_A_ (W)w);
1129	if (ev_is_active (w))	1577	if (!ev_is_active (w))
1130	return;	1578	return;
1131		1579
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1580	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1581	ev_stop (EV_A_ (W)w);
1134	}	1582	}
1135		1583
1136	/*****************************************************************************/	1584	/*****************************************************************************/
1137		1585
1138	struct ev_once	1586	struct ev_once
…		…
1142	void (cb)(int revents, void arg);	1590	void (cb)(int revents, void arg);
1143	void *arg;	1591	void *arg;
1144	};	1592	};
1145		1593
1146	static void	1594	static void
1147	once_cb (struct ev_once *once, int revents)	1595	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1596	{
1149	void (cb)(int revents, void arg) = once->cb;	1597	void (cb)(int revents, void arg) = once->cb;
1150	void *arg = once->arg;	1598	void *arg = once->arg;
1151		1599
1152	ev_io_stop (&once->io);	1600	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1601	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1602	ev_free (once);
1155		1603
1156	cb (revents, arg);	1604	cb (revents, arg);
1157	}	1605	}
1158		1606
1159	static void	1607	static void
1160	once_cb_io (struct ev_io *w, int revents)	1608	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1609	{
1162	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);
1163	}	1611	}
1164		1612
1165	static void	1613	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1614	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1615	{
1168	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);
1169	}	1617	}
1170		1618
1171	void	1619	void
1172	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)
1173	{	1621	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1622	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1175		1623
1176	if (!once)	1624	if (!once)
1177	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1625	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1178	else	1626	else
1179	{	1627	{
1180	once->cb = cb;	1628	once->cb = cb;
1181	once->arg = arg;	1629	once->arg = arg;
1182		1630
1183	ev_watcher_init (&once->io, once_cb_io);	1631	ev_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1632	if (fd >= 0)
1185	{	1633	{
1186	ev_io_set (&once->io, fd, events);	1634	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1635	ev_io_start (EV_A_ &once->io);
1188	}	1636	}
1189		1637
1190	ev_watcher_init (&once->to, once_cb_to);	1638	ev_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1639	if (timeout >= 0.)
1192	{	1640	{
1193	ev_timer_set (&once->to, timeout, 0.);	1641	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1642	ev_timer_start (EV_A_ &once->to);
1195	}	1643	}
1196	}	1644	}
1197	}	1645	}
1198		1646
1199	/*****************************************************************************/	1647	#ifdef __cplusplus
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}	1648	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif	1649	#endif
1255		1650
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}
1276
1277	#endif
1278
1279
1280
1281

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Comparing libev/ev.c (file contents): Revision 1.46 by root, Sat Nov 3 09:20:12 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 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC