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

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.116 by root, Thu Nov 15 09:19:42 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	static struct ev_loop default_loop_struct;
		264	struct ev_loop *ev_default_loop_ptr;
		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 ev_default_loop_ptr;
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 == ev_default_loop_ptr));
		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->status = status;	705
491	event ((W)w, EV_CHILD);	706	child_reap (EV_A_ sw, pid, pid, status);
492	}	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
493	}	709	}
494		710
495	#endif	711	#endif
496		712
497	/*****************************************************************************/	713	/*****************************************************************************/
…		…
519	ev_version_minor (void)	735	ev_version_minor (void)
520	{	736	{
521	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
522	}	738	}
523		739
524	/* 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 */
525	static int	741	static int
526	enable_secure ()	742	enable_secure (void)
527	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
528	return getuid () != geteuid ()	747	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
		749	#endif
530	}	750	}
531		751
532	int ev_init (int methods)	752	unsigned int
		753	ev_method (EV_P)
533	{	754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
534	if (!ev_method)	761	if (!method)
535	{	762	{
536	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
537	{	764	{
538	struct timespec ts;	765	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	767	have_monotonic = 1;
541	}	768	}
542	#endif	769	#endif
543		770
544	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
545	now = get_clock ();	772	mn_now = get_clock ();
546	now_floor = now;	773	now_floor = mn_now;
547	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
548		775
549	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
550	return 0;
551
552	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
555	else
556	methods = EVMETHOD_ANY;
557		778
		779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
558	ev_method = 0;	782	method = 0;
559	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
561	#endif	785	#endif
562	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
564	#endif	788	#endif
565	#if EV_USE_POLL	789	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
567	#endif	791	#endif
568	#if EV_USE_SELECT	792	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
570	#endif	794	#endif
571		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	ev_default_loop_ (unsigned int flags)
		897	#else
		898	int
		899	ev_default_loop (unsigned int flags)
		900	#endif
		901	{
		902	if (sigpipe [0] == sigpipe [1])
		903	if (pipe (sigpipe))
		904	return 0;
		905
		906	if (!ev_default_loop_ptr)
		907	{
		908	#if EV_MULTIPLICITY
		909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		910	#else
		911	ev_default_default_loop_ptr = 1;
		912	#endif
		913
		914	loop_init (EV_A_ flags);
		915
572	if (ev_method)	916	if (ev_method (EV_A))
573	{	917	{
574	ev_watcher_init (&sigev, sigcb);
575	siginit ();	918	siginit (EV_A);
576		919
577	#ifndef WIN32	920	#ifndef _WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	921	ev_signal_init (&childev, childcb, SIGCHLD);
		922	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	923	ev_signal_start (EV_A_ &childev);
		924	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	925	#endif
581	}	926	}
		927	else
		928	ev_default_loop_ptr = 0;
582	}	929	}
583		930
584	return ev_method;	931	return ev_default_loop_ptr;
		932	}
		933
		934	void
		935	ev_default_destroy (void)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = ev_default_loop_ptr;
		939	#endif
		940
		941	#ifndef _WIN32
		942	ev_ref (EV_A); /* child watcher */
		943	ev_signal_stop (EV_A_ &childev);
		944	#endif
		945
		946	ev_ref (EV_A); /* signal watcher */
		947	ev_io_stop (EV_A_ &sigev);
		948
		949	close (sigpipe [0]); sigpipe [0] = 0;
		950	close (sigpipe [1]); sigpipe [1] = 0;
		951
		952	loop_destroy (EV_A);
		953	}
		954
		955	void
		956	ev_default_fork (void)
		957	{
		958	#if EV_MULTIPLICITY
		959	struct ev_loop *loop = ev_default_loop_ptr;
		960	#endif
		961
		962	if (method)
		963	postfork = 1;
585	}	964	}
586		965
587	/*****************************************************************************/	966	/*****************************************************************************/
588		967
589	void
590	ev_fork_prepare (void)
591	{
592	/* nop */
593	}
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif
608
609	ev_io_stop (&sigev);
610	close (sigpipe [0]);
611	close (sigpipe [1]);
612	pipe (sigpipe);
613	siginit ();
614	}
615
616	/*****************************************************************************/
617
618	static void	968	static int
		969	any_pending (EV_P)
		970	{
		971	int pri;
		972
		973	for (pri = NUMPRI; pri--; )
		974	if (pendingcnt [pri])
		975	return 1;
		976
		977	return 0;
		978	}
		979
		980	static void
619	call_pending (void)	981	call_pending (EV_P)
620	{	982	{
621	int pri;	983	int pri;
622		984
623	for (pri = NUMPRI; pri--; )	985	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	986	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		989
628	if (p->w)	990	if (p->w)
629	{	991	{
630	p->w->pending = 0;	992	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	993	EV_CB_INVOKE (p->w, p->events);
632	}	994	}
633	}	995	}
634	}	996	}
635		997
636	static void	998	static void
637	timers_reify (void)	999	timers_reify (EV_P)
638	{	1000	{
639	while (timercnt && timers [0]->at <= now)	1001	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	1002	{
641	struct ev_timer *w = timers [0];	1003	struct ev_timer *w = timers [0];
		1004
		1005	assert (("inactive timer on timer heap detected", ev_is_active (w)));
642		1006
643	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
644	if (w->repeat)	1008	if (w->repeat)
645	{	1009	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1011
647	w->at = now + w->repeat;	1012	((WT)w)->at += w->repeat;
		1013	if (((WT)w)->at < mn_now)
		1014	((WT)w)->at = mn_now;
		1015
648	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
649	}	1017	}
650	else	1018	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		1020
653	event ((W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
654	}	1022	}
655	}	1023	}
656		1024
		1025	#if EV_PERIODICS
657	static void	1026	static void
658	periodics_reify (void)	1027	periodics_reify (EV_P)
659	{	1028	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
661	{	1030	{
662	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
663		1032
		1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1034
664	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
665	if (w->interval)	1036	if (w->reschedule_cb)
666	{	1037	{
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1040	downheap ((WT *)periodics, periodiccnt, 0);
		1041	}
		1042	else if (w->interval)
		1043	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1044	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
668	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1045	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	1046	downheap ((WT *)periodics, periodiccnt, 0);
670	}	1047	}
671	else	1048	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1050
674	event ((W)w, EV_PERIODIC);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
675	}	1052	}
676	}	1053	}
677		1054
678	static void	1055	static void
679	periodics_reschedule (ev_tstamp diff)	1056	periodics_reschedule (EV_P)
680	{	1057	{
681	int i;	1058	int i;
682		1059
683	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
685	{	1062	{
686	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
687		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
688	if (w->interval)	1067	else if (w->interval)
689	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
691
692	if (fabs (diff) >= 1e-4)
693	{
694	ev_periodic_stop (w);
695	ev_periodic_start (w);
696
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}
699	}
700	}	1069	}
701	}
702		1070
703	static int	1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
		1074	}
		1075	#endif
		1076
		1077	inline int
704	time_update_monotonic (void)	1078	time_update_monotonic (EV_P)
705	{	1079	{
706	now = get_clock ();	1080	mn_now = get_clock ();
707		1081
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	1083	{
710	ev_now = now + diff;	1084	ev_rt_now = rtmn_diff + mn_now;
711	return 0;	1085	return 0;
712	}	1086	}
713	else	1087	else
714	{	1088	{
715	now_floor = now;	1089	now_floor = mn_now;
716	ev_now = ev_time ();	1090	ev_rt_now = ev_time ();
717	return 1;	1091	return 1;
718	}	1092	}
719	}	1093	}
720		1094
721	static void	1095	static void
722	time_update (void)	1096	time_update (EV_P)
723	{	1097	{
724	int i;	1098	int i;
725		1099
726	#if EV_USE_MONOTONIC	1100	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	1101	if (expect_true (have_monotonic))
728	{	1102	{
729	if (time_update_monotonic ())	1103	if (time_update_monotonic (EV_A))
730	{	1104	{
731	ev_tstamp odiff = diff;	1105	ev_tstamp odiff = rtmn_diff;
732		1106
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	1108	{
735	diff = ev_now - now;	1109	rtmn_diff = ev_rt_now - mn_now;
736		1110
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	1112	return; /* all is well */
739		1113
740	ev_now = ev_time ();	1114	ev_rt_now = ev_time ();
741	now = get_clock ();	1115	mn_now = get_clock ();
742	now_floor = now;	1116	now_floor = mn_now;
743	}	1117	}
744		1118
		1119	# if EV_PERIODICS
745	periodics_reschedule (diff - odiff);	1120	periodics_reschedule (EV_A);
		1121	# endif
746	/* no timer adjustment, as the monotonic clock doesn't jump */	1122	/* no timer adjustment, as the monotonic clock doesn't jump */
		1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	1124	}
748	}	1125	}
749	else	1126	else
750	#endif	1127	#endif
751	{	1128	{
752	ev_now = ev_time ();	1129	ev_rt_now = ev_time ();
753		1130
754	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1131	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	1132	{
		1133	#if EV_PERIODICS
756	periodics_reschedule (ev_now - now);	1134	periodics_reschedule (EV_A);
		1135	#endif
757		1136
758	/* adjust timers. this is easy, as the offset is the same for all */	1137	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
761	}	1140	}
762		1141
763	now = ev_now;	1142	mn_now = ev_rt_now;
764	}	1143	}
765	}	1144	}
766		1145
767	int ev_loop_done;	1146	void
		1147	ev_ref (EV_P)
		1148	{
		1149	++activecnt;
		1150	}
768		1151
		1152	void
		1153	ev_unref (EV_P)
		1154	{
		1155	--activecnt;
		1156	}
		1157
		1158	static int loop_done;
		1159
		1160	void
769	void ev_loop (int flags)	1161	ev_loop (EV_P_ int flags)
770	{	1162	{
771	double block;	1163	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		1165
774	do	1166	while (activecnt)
775	{	1167	{
776	/* queue check watchers (and execute them) */	1168	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	1169	if (expect_false (preparecnt))
778	{	1170	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	1172	call_pending (EV_A);
781	}	1173	}
782		1174
		1175	/* we might have forked, so reify kernel state if necessary */
		1176	if (expect_false (postfork))
		1177	loop_fork (EV_A);
		1178
783	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
784	fd_reify ();	1180	fd_reify (EV_A);
785		1181
786	/* calculate blocking time */	1182	/* calculate blocking time */
787		1183
788	/* we only need this for !monotonic clockor timers, but as we basically	1184	/* we only need this for !monotonic clock or timers, but as we basically
789	always have timers, we just calculate it always */	1185	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	1186	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1187	if (expect_true (have_monotonic))
792	time_update_monotonic ();	1188	time_update_monotonic (EV_A);
793	else	1189	else
794	#endif	1190	#endif
795	{	1191	{
796	ev_now = ev_time ();	1192	ev_rt_now = ev_time ();
797	now = ev_now;	1193	mn_now = ev_rt_now;
798	}	1194	}
799		1195
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1196	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	1197	block = 0.;
802	else	1198	else
803	{	1199	{
804	block = MAX_BLOCKTIME;	1200	block = MAX_BLOCKTIME;
805		1201
806	if (timercnt)	1202	if (timercnt)
807	{	1203	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	1205	if (block > to) block = to;
810	}	1206	}
811		1207
		1208	#if EV_PERIODICS
812	if (periodiccnt)	1209	if (periodiccnt)
813	{	1210	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
815	if (block > to) block = to;	1212	if (block > to) block = to;
816	}	1213	}
		1214	#endif
817		1215
818	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
819	}	1217	}
820		1218
821	method_poll (block);	1219	method_poll (EV_A_ block);
822		1220
823	/* update ev_now, do magic */	1221	/* update ev_rt_now, do magic */
824	time_update ();	1222	time_update (EV_A);
825		1223
826	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
828	periodics_reify (); /* absolute timers called first */	1227	periodics_reify (EV_A); /* absolute timers called first */
		1228	#endif
829		1229
830	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1233
834	/* queue check watchers, to be executed first */	1234	/* queue check watchers, to be executed first */
835	if (checkcnt)	1235	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1237
838	call_pending ();	1238	call_pending (EV_A);
839	}
840	while (!ev_loop_done);
841		1239
		1240	if (loop_done)
		1241	break;
		1242	}
		1243
842	if (ev_loop_done != 2)	1244	if (loop_done != 2)
843	ev_loop_done = 0;	1245	loop_done = 0;
		1246	}
		1247
		1248	void
		1249	ev_unloop (EV_P_ int how)
		1250	{
		1251	loop_done = how;
844	}	1252	}
845		1253
846	/*****************************************************************************/	1254	/*****************************************************************************/
847		1255
848	static void	1256	inline void
849	wlist_add (WL *head, WL elem)	1257	wlist_add (WL *head, WL elem)
850	{	1258	{
851	elem->next = *head;	1259	elem->next = *head;
852	*head = elem;	1260	*head = elem;
853	}	1261	}
854		1262
855	static void	1263	inline void
856	wlist_del (WL *head, WL elem)	1264	wlist_del (WL *head, WL elem)
857	{	1265	{
858	while (*head)	1266	while (*head)
859	{	1267	{
860	if (*head == elem)	1268	if (*head == elem)
…		…
865		1273
866	head = &(*head)->next;	1274	head = &(*head)->next;
867	}	1275	}
868	}	1276	}
869		1277
870	static void	1278	inline void
871	ev_clear_pending (W w)	1279	ev_clear_pending (EV_P_ W w)
872	{	1280	{
873	if (w->pending)	1281	if (w->pending)
874	{	1282	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1283	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1284	w->pending = 0;
877	}	1285	}
878	}	1286	}
879		1287
880	static void	1288	inline void
881	ev_start (W w, int active)	1289	ev_start (EV_P_ W w, int active)
882	{	1290	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1291	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1292	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1293
886	w->active = active;	1294	w->active = active;
		1295	ev_ref (EV_A);
887	}	1296	}
888		1297
889	static void	1298	inline void
890	ev_stop (W w)	1299	ev_stop (EV_P_ W w)
891	{	1300	{
		1301	ev_unref (EV_A);
892	w->active = 0;	1302	w->active = 0;
893	}	1303	}
894		1304
895	/*****************************************************************************/	1305	/*****************************************************************************/
896		1306
897	void	1307	void
898	ev_io_start (struct ev_io *w)	1308	ev_io_start (EV_P_ struct ev_io *w)
899	{	1309	{
900	int fd = w->fd;	1310	int fd = w->fd;
901		1311
902	if (ev_is_active (w))	1312	if (ev_is_active (w))
903	return;	1313	return;
904		1314
905	assert (("ev_io_start called with negative fd", fd >= 0));	1315	assert (("ev_io_start called with negative fd", fd >= 0));
906		1316
907	ev_start ((W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1320
911	fd_change (fd);	1321	fd_change (EV_A_ fd);
912	}	1322	}
913		1323
914	void	1324	void
915	ev_io_stop (struct ev_io *w)	1325	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1326	{
917	ev_clear_pending ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
919	return;	1329	return;
920		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1334	ev_stop (EV_A_ (W)w);
923		1335
924	fd_change (w->fd);	1336	fd_change (EV_A_ w->fd);
925	}	1337	}
926		1338
927	void	1339	void
928	ev_timer_start (struct ev_timer *w)	1340	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1341	{
930	if (ev_is_active (w))	1342	if (ev_is_active (w))
931	return;	1343	return;
932		1344
933	w->at += now;	1345	((WT)w)->at += mn_now;
934		1346
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1348
937	ev_start ((W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
939	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
941	}
942		1353
		1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1355	}
		1356
943	void	1357	void
944	ev_timer_stop (struct ev_timer *w)	1358	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1359	{
946	ev_clear_pending ((W)w);	1360	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1361	if (!ev_is_active (w))
948	return;	1362	return;
949		1363
		1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1365
950	if (w->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
951	{	1367	{
952	timers [w->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1370	}
955		1371
956	w->at = w->repeat;	1372	((WT)w)->at -= mn_now;
957		1373
958	ev_stop ((W)w);	1374	ev_stop (EV_A_ (W)w);
959	}	1375	}
960		1376
961	void	1377	void
962	ev_timer_again (struct ev_timer *w)	1378	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1379	{
964	if (ev_is_active (w))	1380	if (ev_is_active (w))
965	{	1381	{
966	if (w->repeat)	1382	if (w->repeat)
967	{	1383	{
968	w->at = now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1386	}
971	else	1387	else
972	ev_timer_stop (w);	1388	ev_timer_stop (EV_A_ w);
973	}	1389	}
974	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
975	ev_timer_start (w);	1393	ev_timer_start (EV_A_ w);
		1394	}
976	}	1395	}
977		1396
		1397	#if EV_PERIODICS
978	void	1398	void
979	ev_periodic_start (struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1400	{
981	if (ev_is_active (w))	1401	if (ev_is_active (w))
982	return;	1402	return;
983		1403
		1404	if (w->reschedule_cb)
		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1408	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1409	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1411	}
989		1412
990	ev_start ((W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
992	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1417
		1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1419	}
		1420
996	void	1421	void
997	ev_periodic_stop (struct ev_periodic *w)	1422	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1423	{
999	ev_clear_pending ((W)w);	1424	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1425	if (!ev_is_active (w))
1001	return;	1426	return;
1002		1427
		1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1429
1003	if (w->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
1004	{	1431	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1434	}
1008		1435
1009	ev_stop ((W)w);	1436	ev_stop (EV_A_ (W)w);
1010	}	1437	}
1011		1438
1012	void	1439	void
		1440	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1441	{
		1442	/* TODO: use adjustheap and recalculation */
		1443	ev_periodic_stop (EV_A_ w);
		1444	ev_periodic_start (EV_A_ w);
		1445	}
		1446	#endif
		1447
		1448	void
1013	ev_signal_start (struct ev_signal *w)	1449	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1450	{
1015	if (ev_is_active (w))	1451	if (ev_is_active (w))
1016	return;	1452	return;
1017		1453
		1454	ev_start (EV_A_ (W)w, ++idlecnt);
		1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1456	idles [idlecnt - 1] = w;
		1457	}
		1458
		1459	void
		1460	ev_idle_stop (EV_P_ struct ev_idle *w)
		1461	{
		1462	ev_clear_pending (EV_A_ (W)w);
		1463	if (!ev_is_active (w))
		1464	return;
		1465
		1466	idles [((W)w)->active - 1] = idles [--idlecnt];
		1467	ev_stop (EV_A_ (W)w);
		1468	}
		1469
		1470	void
		1471	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1472	{
		1473	if (ev_is_active (w))
		1474	return;
		1475
		1476	ev_start (EV_A_ (W)w, ++preparecnt);
		1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1478	prepares [preparecnt - 1] = w;
		1479	}
		1480
		1481	void
		1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1483	{
		1484	ev_clear_pending (EV_A_ (W)w);
		1485	if (!ev_is_active (w))
		1486	return;
		1487
		1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1489	ev_stop (EV_A_ (W)w);
		1490	}
		1491
		1492	void
		1493	ev_check_start (EV_P_ struct ev_check *w)
		1494	{
		1495	if (ev_is_active (w))
		1496	return;
		1497
		1498	ev_start (EV_A_ (W)w, ++checkcnt);
		1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1500	checks [checkcnt - 1] = w;
		1501	}
		1502
		1503	void
		1504	ev_check_stop (EV_P_ struct ev_check *w)
		1505	{
		1506	ev_clear_pending (EV_A_ (W)w);
		1507	if (!ev_is_active (w))
		1508	return;
		1509
		1510	checks [((W)w)->active - 1] = checks [--checkcnt];
		1511	ev_stop (EV_A_ (W)w);
		1512	}
		1513
		1514	#ifndef SA_RESTART
		1515	# define SA_RESTART 0
		1516	#endif
		1517
		1518	void
		1519	ev_signal_start (EV_P_ struct ev_signal *w)
		1520	{
		1521	#if EV_MULTIPLICITY
		1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1523	#endif
		1524	if (ev_is_active (w))
		1525	return;
		1526
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1528
1020	ev_start ((W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1532
1024	if (!w->next)	1533	if (!((WL)w)->next)
1025	{	1534	{
		1535	#if _WIN32
		1536	signal (w->signum, sighandler);
		1537	#else
1026	struct sigaction sa;	1538	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1541	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1542	sigaction (w->signum, &sa, 0);
		1543	#endif
1031	}	1544	}
1032	}	1545	}
1033		1546
1034	void	1547	void
1035	ev_signal_stop (struct ev_signal *w)	1548	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1549	{
1037	ev_clear_pending ((W)w);	1550	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1551	if (!ev_is_active (w))
1039	return;	1552	return;
1040		1553
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1554	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1555	ev_stop (EV_A_ (W)w);
1043		1556
1044	if (!signals [w->signum - 1].head)	1557	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1558	signal (w->signum, SIG_DFL);
1046	}	1559	}
1047		1560
1048	void	1561	void
1049	ev_idle_start (struct ev_idle *w)	1562	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1563	{
		1564	#if EV_MULTIPLICITY
		1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1566	#endif
1051	if (ev_is_active (w))	1567	if (ev_is_active (w))
1052	return;	1568	return;
1053		1569
1054	ev_start ((W)w, ++idlecnt);
1055	array_needsize (idles, idlemax, idlecnt, );
1056	idles [idlecnt - 1] = w;
1057	}
1058
1059	void
1060	ev_idle_stop (struct ev_idle *w)
1061	{
1062	ev_clear_pending ((W)w);
1063	if (ev_is_active (w))
1064	return;
1065
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);	1570	ev_start (EV_A_ (W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1571	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}	1572	}
1123		1573
1124	void	1574	void
1125	ev_child_stop (struct ev_child *w)	1575	ev_child_stop (EV_P_ struct ev_child *w)
1126	{	1576	{
1127	ev_clear_pending ((W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1128	if (ev_is_active (w))	1578	if (!ev_is_active (w))
1129	return;	1579	return;
1130		1580
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1582	ev_stop (EV_A_ (W)w);
1133	}	1583	}
1134		1584
1135	/*****************************************************************************/	1585	/*****************************************************************************/
1136		1586
1137	struct ev_once	1587	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1591	void (cb)(int revents, void arg);
1142	void *arg;	1592	void *arg;
1143	};	1593	};
1144		1594
1145	static void	1595	static void
1146	once_cb (struct ev_once *once, int revents)	1596	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1597	{
1148	void (cb)(int revents, void arg) = once->cb;	1598	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1599	void *arg = once->arg;
1150		1600
1151	ev_io_stop (&once->io);	1601	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1602	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1603	ev_free (once);
1154		1604
1155	cb (revents, arg);	1605	cb (revents, arg);
1156	}	1606	}
1157		1607
1158	static void	1608	static void
1159	once_cb_io (struct ev_io *w, int revents)	1609	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1610	{
1161	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1611	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1162	}	1612	}
1163		1613
1164	static void	1614	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1615	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1616	{
1167	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1617	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1168	}	1618	}
1169		1619
1170	void	1620	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1172	{	1622	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1623	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1174		1624
1175	if (!once)	1625	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1626	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1177	else	1627	else
1178	{	1628	{
1179	once->cb = cb;	1629	once->cb = cb;
1180	once->arg = arg;	1630	once->arg = arg;
1181		1631
1182	ev_watcher_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1633	if (fd >= 0)
1184	{	1634	{
1185	ev_io_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1636	ev_io_start (EV_A_ &once->io);
1187	}	1637	}
1188		1638
1189	ev_watcher_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1640	if (timeout >= 0.)
1191	{	1641	{
1192	ev_timer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1643	ev_timer_start (EV_A_ &once->to);
1194	}	1644	}
1195	}	1645	}
1196	}	1646	}
1197		1647
1198	/*****************************************************************************/	1648	#ifdef __cplusplus
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}	1649	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif	1650	#endif
1254		1651
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC