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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	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	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USEV_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
80		158
81	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
89	#endif	167	#endif
90		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
91	/**/	173	/**/
92		174
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#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) */	176	#define MAX_BLOCKTIME 59.743 /* 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 */	177	#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 */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
98	#include "ev.h"	183	# include "ev.h"
		184	#endif
99		185
100	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	188	# define inline static inline
103	#else	189	#else
104	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
105	# define inline static	191	# define inline static
106	#endif	192	#endif
107		193
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
110		196
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
114	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
117		206
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
120	/*****************************************************************************/	213	/*****************************************************************************/
121		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
122	typedef struct	263	typedef struct
123	{	264	{
124	struct ev_watcher_list *head;	265	WL head;
125	unsigned char events;	266	unsigned char events;
126	unsigned char reify;	267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
127	} ANFD;	271	} ANFD;
128		272
129	typedef struct	273	typedef struct
130	{	274	{
131	W w;	275	W w;
132	int events;	276	int events;
133	} ANPENDING;	277	} ANPENDING;
134		278
135	#ifdef EV_MULTIPLICITY	279	#if EV_MULTIPLICITY
136		280
137	struct ev_loop	281	struct ev_loop
138	{	282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	285	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	286	#include "ev_vars.h"
141	};
142	# undef VAR	287	#undef VAR
		288	};
143	# include "ev_wrap.h"	289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
144		293
145	#else	294	#else
146		295
		296	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	297	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	298	#include "ev_vars.h"
149	# undef VAR	299	#undef VAR
		300
		301	static int ev_default_loop_ptr;
150		302
151	#endif	303	#endif
152		304
153	/*****************************************************************************/	305	/*****************************************************************************/
154		306
155	inline ev_tstamp	307	ev_tstamp
156	ev_time (void)	308	ev_time (void)
157	{	309	{
158	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
159	struct timespec ts;	311	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	331	#endif
180		332
181	return ev_time ();	333	return ev_time ();
182	}	334	}
183		335
		336	#if EV_MULTIPLICITY
184	ev_tstamp	337	ev_tstamp
185	ev_now (EV_P)	338	ev_now (EV_P)
186	{	339	{
187	return rt_now;	340	return ev_rt_now;
188	}	341	}
		342	#endif
189		343
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		345
192	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
194	{ \	348	{ \
195	int newcnt = cur; \	349	int newcnt = cur; \
196	do \	350	do \
197	{ \	351	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	353	} \
200	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
201	\	355	\
202	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	358	cur = newcnt; \
205	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		371
207	/*****************************************************************************/	372	/*****************************************************************************/
208		373
209	static void	374	static void
210	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
…		…
217		382
218	++base;	383	++base;
219	}	384	}
220	}	385	}
221		386
222	static void	387	void
223	event (EV_P_ W w, int events)	388	ev_feed_event (EV_P_ void *w, int revents)
224	{	389	{
225	if (w->pending)	390	W w_ = (W)w;
		391
		392	if (expect_false (w_->pending))
226	{	393	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	395	return;
229	}	396	}
230		397
231	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	402	}
236		403
237	static void	404	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	406	{
240	int i;	407	int i;
241		408
242	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
244	}	411	}
245		412
246	static void	413	inline void
247	fd_event (EV_P_ int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
248	{	415	{
249	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	417	struct ev_io *w;
251		418
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	420	{
254	int ev = w->events & events;	421	int ev = w->events & revents;
255		422
256	if (ev)	423	if (ev)
257	event (EV_A_ (W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
258	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
259	}	432	}
260		433
261	/*****************************************************************************/	434	/*****************************************************************************/
262		435
263	static void	436	inline void
264	fd_reify (EV_P)	437	fd_reify (EV_P)
265	{	438	{
266	int i;	439	int i;
267		440
268	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
274	int events = 0;	447	int events = 0;
275		448
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	450	events \|= w->events;
278		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
279	anfd->reify = 0;	461	anfd->reify = 0;
280		462
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	464	anfd->events = events;
285	}
286	}	465	}
287		466
288	fdchangecnt = 0;	467	fdchangecnt = 0;
289	}	468	}
290		469
291	static void	470	static void
292	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
293	{	472	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
295	return;	474	return;
296		475
297	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
298		477
299	++fdchangecnt;	478	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
302	}	481	}
303		482
304	static void	483	static void
305	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	486	struct ev_io *w;
308		487
309	while ((w = (struct ev_io *)anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
310	{	489	{
311	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
314	}	503	}
315		504
316	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
317	static void	506	static void
318	fd_ebadf (EV_P)	507	fd_ebadf (EV_P)
319	{	508	{
320	int fd;	509	int fd;
321		510
322	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	512	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	514	fd_kill (EV_A_ fd);
326	}	515	}
327		516
328	/* called on ENOMEM in select/poll to kill some fds and retry */	517	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	518	static void
330	fd_enomem (EV_P)	519	fd_enomem (EV_P)
331	{	520	{
332	int fd = anfdmax;	521	int fd;
333		522
334	while (fd--)	523	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	524	if (anfds [fd].events)
336	{	525	{
337	close (fd);
338	fd_kill (EV_A_ fd);	526	fd_kill (EV_A_ fd);
339	return;	527	return;
340	}	528	}
341	}	529	}
342		530
		531	/* usually called after fork if backend needs to re-arm all fds from scratch */
		532	static void
		533	fd_rearm_all (EV_P)
		534	{
		535	int fd;
		536
		537	/* this should be highly optimised to not do anything but set a flag */
		538	for (fd = 0; fd < anfdmax; ++fd)
		539	if (anfds [fd].events)
		540	{
		541	anfds [fd].events = 0;
		542	fd_change (EV_A_ fd);
		543	}
		544	}
		545
343	/*****************************************************************************/	546	/*****************************************************************************/
344		547
345	static void	548	static void
346	upheap (WT *heap, int k)	549	upheap (WT *heap, int k)
347	{	550	{
348	WT w = heap [k];	551	WT w = heap [k];
349		552
350	while (k && heap [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
351	{	554	{
352	heap [k] = heap [k >> 1];	555	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
354	k >>= 1;	557	k >>= 1;
355	}	558	}
356		559
357	heap [k] = w;	560	heap [k] = w;
358	heap [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
359		562
360	}	563	}
361		564
362	static void	565	static void
363	downheap (WT *heap, int N, int k)	566	downheap (WT *heap, int N, int k)
…		…
373		576
374	if (w->at <= heap [j]->at)	577	if (w->at <= heap [j]->at)
375	break;	578	break;
376		579
377	heap [k] = heap [j];	580	heap [k] = heap [j];
378	heap [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
379	k = j;	582	k = j;
380	}	583	}
381		584
382	heap [k] = w;	585	heap [k] = w;
383	heap [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
384	}	594	}
385		595
386	/*****************************************************************************/	596	/*****************************************************************************/
387		597
388	typedef struct	598	typedef struct
389	{	599	{
390	struct ev_watcher_list *head;	600	WL head;
391	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
392	} ANSIG;	602	} ANSIG;
393		603
394	static ANSIG *signals;	604	static ANSIG *signals;
395	static int signalmax;	605	static int signalmax;
396		606
397	static int sigpipe [2];	607	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	608	static sig_atomic_t volatile gotsig;
		609	static struct ev_io sigev;
399		610
400	static void	611	static void
401	signals_init (ANSIG *base, int count)	612	signals_init (ANSIG *base, int count)
402	{	613	{
403	while (count--)	614	while (count--)
…		…
410	}	621	}
411		622
412	static void	623	static void
413	sighandler (int signum)	624	sighandler (int signum)
414	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
415	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
416		631
417	if (!gotsig)	632	if (!gotsig)
418	{	633	{
419	int old_errno = errno;	634	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	637	errno = old_errno;
423	}	638	}
424	}	639	}
425		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
426	static void	661	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	663	{
429	struct ev_watcher_list *w;
430	int signum;	664	int signum;
431		665
432	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	667	gotsig = 0;
434		668
435	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
437	{	671	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;	672	}
439		673
440	for (w = signals [signum].head; w; w = w->next)	674	static void
441	event (EV_A_ (W)w, EV_SIGNAL);	675	fd_intern (int fd)
442	}	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
		681	fcntl (fd, F_SETFD, FD_CLOEXEC);
		682	fcntl (fd, F_SETFL, O_NONBLOCK);
		683	#endif
443	}	684	}
444		685
445	static void	686	static void
446	siginit (EV_P)	687	siginit (EV_P)
447	{	688	{
448	#ifndef WIN32	689	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		691
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	693	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	695	}
461		696
462	/*****************************************************************************/	697	/*****************************************************************************/
463		698
		699	static struct ev_child *childs [PID_HASHSIZE];
		700
464	#ifndef WIN32	701	#ifndef _WIN32
		702
		703	static struct ev_signal childev;
465		704
466	#ifndef WCONTINUED	705	#ifndef WCONTINUED
467	# define WCONTINUED 0	706	# define WCONTINUED 0
468	#endif	707	#endif
469		708
…		…
473	struct ev_child *w;	712	struct ev_child *w;
474		713
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	715	if (w->pid == pid \|\| !w->pid)
477	{	716	{
478	w->priority = sw->priority; /* need to do it now */	717	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	718	w->rpid = pid;
480	w->rstatus = status;	719	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	721	}
483	}	722	}
484		723
485	static void	724	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	725	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	727	int pid, status;
489		728
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	730	{
492	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
		732	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		734
495	child_reap (EV_A_ sw, pid, pid, status);	735	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}	737	}
498	}	738	}
499		739
500	#endif	740	#endif
501		741
502	/*****************************************************************************/	742	/*****************************************************************************/
503		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
504	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
506	#endif	749	#endif
507	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	751	# include "ev_epoll.c"
509	#endif	752	#endif
510	#if EV_USEV_POLL	753	#if EV_USE_POLL
511	# include "ev_poll.c"	754	# include "ev_poll.c"
512	#endif	755	#endif
513	#if EV_USE_SELECT	756	#if EV_USE_SELECT
514	# include "ev_select.c"	757	# include "ev_select.c"
515	#endif	758	#endif
…		…
528		771
529	/* return true if we are running with elevated privileges and should ignore env variables */	772	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	773	static int
531	enable_secure (void)	774	enable_secure (void)
532	{	775	{
533	#ifdef WIN32	776	#ifdef _WIN32
534	return 0;	777	return 0;
535	#else	778	#else
536	return getuid () != geteuid ()	779	return getuid () != geteuid ()
537	\|\| getgid () != getegid ();	780	\|\| getgid () != getegid ();
538	#endif	781	#endif
539	}	782	}
540		783
541	int	784	unsigned int
542	ev_method (EV_P)	785	ev_supported_backends (void)
543	{	786	{
544	return method;	787	unsigned int flags = 0;
545	}
546		788
547	static void	789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
549	{	800	{
550	if (!method)	801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
551	{	826	{
552	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
553	{	828	{
554	struct timespec ts;	829	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	831	have_monotonic = 1;
557	}	832	}
558	#endif	833	#endif
559		834
560	rt_now = ev_time ();	835	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	836	mn_now = get_clock ();
562	now_floor = mn_now;	837	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	838	rtmn_diff = ev_rt_now - mn_now;
564		839
565	if (pipe (sigpipe))	840	if (!(flags & EVFLAG_NOENV)
566	return 0;	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
		843	flags = atoi (getenv ("LIBEV_FLAGS"));
567		844
568	if (methods == EVMETHOD_AUTO)	845	if (!(flags & 0x0000ffffUL))
569	if (!enable_secure () && getenv ("LIBmethodS"))	846	flags \|= ev_recommended_backends ();
570	methods = atoi (getenv ("LIBmethodS"));
571	else
572	methods = EVMETHOD_ANY;
573		847
574	method = 0;	848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		851	#endif
575	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	854	#endif
578	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	857	#endif
581	#if EV_USEV_POLL	858	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	860	#endif
584	#if EV_USE_SELECT	861	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	863	#endif
587		864
588	if (method)	865	ev_init (&sigev, sigcb);
		866	ev_set_priority (&sigev, EV_MAXPRI);
		867	}
		868	}
		869
		870	static void
		871	loop_destroy (EV_P)
		872	{
		873	int i;
		874
		875	#if EV_USE_PORT
		876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		877	#endif
		878	#if EV_USE_KQUEUE
		879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		880	#endif
		881	#if EV_USE_EPOLL
		882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		883	#endif
		884	#if EV_USE_POLL
		885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		886	#endif
		887	#if EV_USE_SELECT
		888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		889	#endif
		890
		891	for (i = NUMPRI; i--; )
		892	array_free (pending, [i]);
		893
		894	/* have to use the microsoft-never-gets-it-right macro */
		895	array_free (fdchange, EMPTY0);
		896	array_free (timer, EMPTY0);
		897	#if EV_PERIODICS
		898	array_free (periodic, EMPTY0);
		899	#endif
		900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
		903
		904	backend = 0;
		905	}
		906
		907	static void
		908	loop_fork (EV_P)
		909	{
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
		916	#if EV_USE_EPOLL
		917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		918	#endif
		919
		920	if (ev_is_active (&sigev))
		921	{
		922	/* default loop */
		923
		924	ev_ref (EV_A);
		925	ev_io_stop (EV_A_ &sigev);
		926	close (sigpipe [0]);
		927	close (sigpipe [1]);
		928
		929	while (pipe (sigpipe))
		930	syserr ("(libev) error creating pipe");
		931
		932	siginit (EV_A);
		933	}
		934
		935	postfork = 0;
		936	}
		937
		938	#if EV_MULTIPLICITY
		939	struct ev_loop *
		940	ev_loop_new (unsigned int flags)
		941	{
		942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		943
		944	memset (loop, 0, sizeof (struct ev_loop));
		945
		946	loop_init (EV_A_ flags);
		947
		948	if (ev_backend (EV_A))
		949	return loop;
		950
		951	return 0;
		952	}
		953
		954	void
		955	ev_loop_destroy (EV_P)
		956	{
		957	loop_destroy (EV_A);
		958	ev_free (loop);
		959	}
		960
		961	void
		962	ev_loop_fork (EV_P)
		963	{
		964	postfork = 1;
		965	}
		966
		967	#endif
		968
		969	#if EV_MULTIPLICITY
		970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
		972	#else
		973	int
		974	ev_default_loop (unsigned int flags)
		975	#endif
		976	{
		977	if (sigpipe [0] == sigpipe [1])
		978	if (pipe (sigpipe))
		979	return 0;
		980
		981	if (!ev_default_loop_ptr)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		985	#else
		986	ev_default_loop_ptr = 1;
		987	#endif
		988
		989	loop_init (EV_A_ flags);
		990
		991	if (ev_backend (EV_A))
589	{	992	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	993	siginit (EV_A);
593		994
594	#ifndef WIN32	995	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	998	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	999	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1000	#endif
600	}	1001	}
		1002	else
		1003	ev_default_loop_ptr = 0;
601	}	1004	}
602		1005
603	return method;	1006	return ev_default_loop_ptr;
604	}	1007	}
605		1008
		1009	void
		1010	ev_default_destroy (void)
		1011	{
606	#ifdef EV_MULTIPLICITY	1012	#if EV_MULTIPLICITY
607		1013	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	1014	#endif
		1015
		1016	#ifndef _WIN32
		1017	ev_ref (EV_A); /* child watcher */
		1018	ev_signal_stop (EV_A_ &childev);
		1019	#endif
		1020
		1021	ev_ref (EV_A); /* signal watcher */
		1022	ev_io_stop (EV_A_ &sigev);
		1023
		1024	close (sigpipe [0]); sigpipe [0] = 0;
		1025	close (sigpipe [1]); sigpipe [1] = 0;
		1026
		1027	loop_destroy (EV_A);
		1028	}
		1029
		1030	void
		1031	ev_default_fork (void)
		1032	{
		1033	#if EV_MULTIPLICITY
		1034	struct ev_loop *loop = ev_default_loop_ptr;
		1035	#endif
		1036
		1037	if (backend)
		1038	postfork = 1;
		1039	}
634		1040
635	/*****************************************************************************/	1041	/*****************************************************************************/
636		1042
637	void
638	ev_fork_prepare (void)
639	{
640	/* nop */
641	}
642
643	void
644	ev_fork_parent (void)
645	{
646	/* nop */
647	}
648
649	void
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}
666
667	/*****************************************************************************/
668
669	static void	1043	static int
		1044	any_pending (EV_P)
		1045	{
		1046	int pri;
		1047
		1048	for (pri = NUMPRI; pri--; )
		1049	if (pendingcnt [pri])
		1050	return 1;
		1051
		1052	return 0;
		1053	}
		1054
		1055	inline void
670	call_pending (EV_P)	1056	call_pending (EV_P)
671	{	1057	{
672	int pri;	1058	int pri;
673		1059
674	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
676	{	1062	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1064
679	if (p->w)	1065	if (expect_true (p->w))
680	{	1066	{
681	p->w->pending = 0;	1067	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
683	}	1069	}
684	}	1070	}
685	}	1071	}
686		1072
687	static void	1073	inline void
688	timers_reify (EV_P)	1074	timers_reify (EV_P)
689	{	1075	{
690	while (timercnt && timers [0]->at <= mn_now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	1077	{
692	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
		1079
		1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		1081
694	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
695	if (w->repeat)	1083	if (w->repeat)
696	{	1084	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
698	w->at = mn_now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
699	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
700	}	1092	}
701	else	1093	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1095
704	event (EV_A_ (W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1097	}
706	}	1098	}
707		1099
708	static void	1100	#if EV_PERIODICS
		1101	inline void
709	periodics_reify (EV_P)	1102	periodics_reify (EV_P)
710	{	1103	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1105	{
713	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
714		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
715	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
716	if (w->interval)	1111	if (w->reschedule_cb)
717	{	1112	{
		1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1115	downheap ((WT *)periodics, periodiccnt, 0);
		1116	}
		1117	else if (w->interval)
		1118	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1122	}
722	else	1123	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1125
725	event (EV_A_ (W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1127	}
727	}	1128	}
728		1129
729	static void	1130	static void
730	periodics_reschedule (EV_P)	1131	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
736	{	1137	{
737	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
738		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1142	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1144	}
		1145
		1146	/* now rebuild the heap */
		1147	for (i = periodiccnt >> 1; i--; )
		1148	downheap ((WT *)periodics, periodiccnt, i);
752	}	1149	}
		1150	#endif
753		1151
754	inline int	1152	inline int
755	time_update_monotonic (EV_P)	1153	time_update_monotonic (EV_P)
756	{	1154	{
757	mn_now = get_clock ();	1155	mn_now = get_clock ();
758		1156
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1158	{
761	rt_now = rtmn_diff + mn_now;	1159	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1160	return 0;
763	}	1161	}
764	else	1162	else
765	{	1163	{
766	now_floor = mn_now;	1164	now_floor = mn_now;
767	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
768	return 1;	1166	return 1;
769	}	1167	}
770	}	1168	}
771		1169
772	static void	1170	inline void
773	time_update (EV_P)	1171	time_update (EV_P)
774	{	1172	{
775	int i;	1173	int i;
776		1174
777	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
…		…
781	{	1179	{
782	ev_tstamp odiff = rtmn_diff;	1180	ev_tstamp odiff = rtmn_diff;
783		1181
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
785	{	1183	{
786	rtmn_diff = rt_now - mn_now;	1184	rtmn_diff = ev_rt_now - mn_now;
787		1185
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1187	return; /* all is well */
790		1188
791	rt_now = ev_time ();	1189	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1190	mn_now = get_clock ();
793	now_floor = mn_now;	1191	now_floor = mn_now;
794	}	1192	}
795		1193
		1194	# if EV_PERIODICS
796	periodics_reschedule (EV_A);	1195	periodics_reschedule (EV_A);
		1196	# endif
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1197	/* no timer adjustment, as the monotonic clock doesn't jump */
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1199	}
800	}	1200	}
801	else	1201	else
802	#endif	1202	#endif
803	{	1203	{
804	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
805		1205
806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{	1207	{
		1208	#if EV_PERIODICS
808	periodics_reschedule (EV_A);	1209	periodics_reschedule (EV_A);
		1210	#endif
809		1211
810	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1215	}
814		1216
815	mn_now = rt_now;	1217	mn_now = ev_rt_now;
816	}	1218	}
817	}	1219	}
818		1220
819	void	1221	void
820	ev_ref (EV_P)	1222	ev_ref (EV_P)
…		…
834	ev_loop (EV_P_ int flags)	1236	ev_loop (EV_P_ int flags)
835	{	1237	{
836	double block;	1238	double block;
837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
838		1240
839	do	1241	while (activecnt)
840	{	1242	{
841	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
842	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
843	{	1245	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1247	call_pending (EV_A);
846	}	1248	}
847		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
848	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1255	fd_reify (EV_A);
850		1256
851	/* calculate blocking time */	1257	/* calculate blocking time */
852		1258
853	/* we only need this for !monotonic clockor timers, but as we basically	1259	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1260	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1261	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1262	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1263	time_update_monotonic (EV_A);
858	else	1264	else
859	#endif	1265	#endif
860	{	1266	{
861	rt_now = ev_time ();	1267	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1268	mn_now = ev_rt_now;
863	}	1269	}
864		1270
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;	1272	block = 0.;
867	else	1273	else
868	{	1274	{
869	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
870		1276
871	if (timercnt)	1277	if (timercnt)
872	{	1278	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
874	if (block > to) block = to;	1280	if (block > to) block = to;
875	}	1281	}
876		1282
		1283	#if EV_PERIODICS
877	if (periodiccnt)	1284	if (periodiccnt)
878	{	1285	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	1287	if (block > to) block = to;
881	}	1288	}
		1289	#endif
882		1290
883	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
884	}	1292	}
885		1293
886	method_poll (EV_A_ block);	1294	backend_poll (EV_A_ block);
887		1295
888	/* update rt_now, do magic */	1296	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1297	time_update (EV_A);
890		1298
891	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
893	periodics_reify (EV_A); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
894		1304
895	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1308
899	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
900	if (checkcnt)	1310	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		1312
903	call_pending (EV_A);	1313	call_pending (EV_A);
		1314
		1315	if (expect_false (loop_done))
		1316	break;
904	}	1317	}
905	while (activecnt && !loop_done);
906		1318
907	if (loop_done != 2)	1319	if (loop_done != 2)
908	loop_done = 0;	1320	loop_done = 0;
909	}	1321	}
910		1322
…		…
970	void	1382	void
971	ev_io_start (EV_P_ struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
972	{	1384	{
973	int fd = w->fd;	1385	int fd = w->fd;
974		1386
975	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
976	return;	1388	return;
977		1389
978	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
979		1391
980	ev_start (EV_A_ (W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1395
984	fd_change (EV_A_ fd);	1396	fd_change (EV_A_ fd);
985	}	1397	}
986		1398
987	void	1399	void
988	ev_io_stop (EV_P_ struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
989	{	1401	{
990	ev_clear_pending (EV_A_ (W)w);	1402	ev_clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
992	return;	1404	return;
		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
993		1407
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1409	ev_stop (EV_A_ (W)w);
996		1410
997	fd_change (EV_A_ w->fd);	1411	fd_change (EV_A_ w->fd);
998	}	1412	}
999		1413
1000	void	1414	void
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1416	{
1003	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
1004	return;	1418	return;
1005		1419
1006	w->at += mn_now;	1420	((WT)w)->at += mn_now;
1007		1421
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1423
1010	ev_start (EV_A_ (W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1012	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1430	}
1015		1431
1016	void	1432	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1434	{
1019	ev_clear_pending (EV_A_ (W)w);	1435	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
1021	return;	1437	return;
1022		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
1023	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
1024	{	1442	{
1025	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1445	}
1028		1446
1029	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
1030		1448
1031	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1032	}	1450	}
1033		1451
1034	void	1452	void
…		…
1036	{	1454	{
1037	if (ev_is_active (w))	1455	if (ev_is_active (w))
1038	{	1456	{
1039	if (w->repeat)	1457	if (w->repeat)
1040	{	1458	{
1041	w->at = mn_now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1461	}
1044	else	1462	else
1045	ev_timer_stop (EV_A_ w);	1463	ev_timer_stop (EV_A_ w);
1046	}	1464	}
1047	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
1048	ev_timer_start (EV_A_ w);	1468	ev_timer_start (EV_A_ w);
		1469	}
1049	}	1470	}
1050		1471
		1472	#if EV_PERIODICS
1051	void	1473	void
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1475	{
1054	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1055	return;	1477	return;
1056		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1486	}
1062		1487
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1494	}
1068		1495
1069	void	1496	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1498	{
1072	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1074	return;	1501	return;
1075		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
1076	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1077	{	1506	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1509	}
1081		1510
		1511	ev_stop (EV_A_ (W)w);
		1512	}
		1513
		1514	void
		1515	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1516	{
		1517	/* TODO: use adjustheap and recalculation */
		1518	ev_periodic_stop (EV_A_ w);
		1519	ev_periodic_start (EV_A_ w);
		1520	}
		1521	#endif
		1522
		1523	void
		1524	ev_idle_start (EV_P_ struct ev_idle *w)
		1525	{
		1526	if (expect_false (ev_is_active (w)))
		1527	return;
		1528
		1529	ev_start (EV_A_ (W)w, ++idlecnt);
		1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1531	idles [idlecnt - 1] = w;
		1532	}
		1533
		1534	void
		1535	ev_idle_stop (EV_P_ struct ev_idle *w)
		1536	{
		1537	ev_clear_pending (EV_A_ (W)w);
		1538	if (expect_false (!ev_is_active (w)))
		1539	return;
		1540
		1541	idles [((W)w)->active - 1] = idles [--idlecnt];
		1542	ev_stop (EV_A_ (W)w);
		1543	}
		1544
		1545	void
		1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1547	{
		1548	if (expect_false (ev_is_active (w)))
		1549	return;
		1550
		1551	ev_start (EV_A_ (W)w, ++preparecnt);
		1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1553	prepares [preparecnt - 1] = w;
		1554	}
		1555
		1556	void
		1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1558	{
		1559	ev_clear_pending (EV_A_ (W)w);
		1560	if (expect_false (!ev_is_active (w)))
		1561	return;
		1562
		1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1564	ev_stop (EV_A_ (W)w);
		1565	}
		1566
		1567	void
		1568	ev_check_start (EV_P_ struct ev_check *w)
		1569	{
		1570	if (expect_false (ev_is_active (w)))
		1571	return;
		1572
		1573	ev_start (EV_A_ (W)w, ++checkcnt);
		1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1575	checks [checkcnt - 1] = w;
		1576	}
		1577
		1578	void
		1579	ev_check_stop (EV_P_ struct ev_check *w)
		1580	{
		1581	ev_clear_pending (EV_A_ (W)w);
		1582	if (expect_false (!ev_is_active (w)))
		1583	return;
		1584
		1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1586	ev_stop (EV_A_ (W)w);
1083	}	1587	}
1084		1588
1085	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1590	# define SA_RESTART 0
1087	#endif	1591	#endif
1088		1592
1089	void	1593	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1595	{
		1596	#if EV_MULTIPLICITY
		1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1598	#endif
1092	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1093	return;	1600	return;
1094		1601
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1603
1097	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1607
1101	if (!w->next)	1608	if (!((WL)w)->next)
1102	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
1103	struct sigaction sa;	1613	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1616	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
1108	}	1619	}
1109	}	1620	}
1110		1621
1111	void	1622	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1113	{	1624	{
1114	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1116	return;	1627	return;
1117		1628
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1120		1631
1121	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1123	}	1634	}
1124		1635
1125	void	1636	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1638	{
		1639	#if EV_MULTIPLICITY
		1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1641	#endif
1194	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1195	return;	1643	return;
1196		1644
1197	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}	1647	}
1200		1648
1201	void	1649	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1203	{	1651	{
1204	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1206	return;	1654	return;
1207		1655
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1209	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1210	}	1658	}
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1673	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1674	void *arg = once->arg;
1227		1675
1228	ev_io_stop (EV_A_ &once->io);	1676	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1678	ev_free (once);
1231		1679
1232	cb (revents, arg);	1680	cb (revents, arg);
1233	}	1681	}
1234		1682
1235	static void	1683	static void
…		…
1245	}	1693	}
1246		1694
1247	void	1695	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1697	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1699
1252	if (!once)	1700	if (expect_false (!once))
		1701	{
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1703	return;
1255	{	1704	}
		1705
1256	once->cb = cb;	1706	once->cb = cb;
1257	once->arg = arg;	1707	once->arg = arg;
1258		1708
1259	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1710	if (fd >= 0)
1261	{	1711	{
1262	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1713	ev_io_start (EV_A_ &once->io);
1264	}	1714	}
1265		1715
1266	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1717	if (timeout >= 0.)
1268	{	1718	{
1269	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1720	ev_timer_start (EV_A_ &once->to);
1271	}
1272	}
1273	}
1274
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{	1721	}
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	1722	}
1352		1723
		1724	#ifdef __cplusplus
		1725	}
1353	#endif	1726	#endif
1354		1727
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC