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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 1.127 by root, Sun Nov 18 02:17:57 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	# 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_USE_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USE_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	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
80		164
81	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
84	#endif	168	#endif
…		…
86	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
89	#endif	173	#endif
90		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
91	/**/	179	/**/
92		180
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#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) */	182	#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 */	183	#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 */	184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
98	#include "ev.h"	189	# include "ev.h"
		190	#endif
99		191
100	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	194	# define inline static inline
103	#else	195	#else
104	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
105	# define inline static	197	# define inline static
106	#endif	198	#endif
107		199
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
110		202
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
114	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
117		212
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		214
		215	#ifdef _WIN32
		216	# include "ev_win32.c"
		217	#endif
		218
		219	/*****************************************************************************/
		220
		221	static void (*syserr_cb)(const char *msg);
		222
		223	void ev_set_syserr_cb (void (*cb)(const char *msg))
		224	{
		225	syserr_cb = cb;
		226	}
		227
		228	static void
		229	syserr (const char *msg)
		230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
		234	if (syserr_cb)
		235	syserr_cb (msg);
		236	else
		237	{
		238	perror (msg);
		239	abort ();
		240	}
		241	}
		242
		243	static void *(*alloc)(void *ptr, long size);
		244
		245	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		246	{
		247	alloc = cb;
		248	}
		249
		250	static void *
		251	ev_realloc (void *ptr, long size)
		252	{
		253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		254
		255	if (!ptr && size)
		256	{
		257	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		258	abort ();
		259	}
		260
		261	return ptr;
		262	}
		263
		264	#define ev_malloc(size) ev_realloc (0, (size))
		265	#define ev_free(ptr) ev_realloc ((ptr), 0)
		266
		267	/*****************************************************************************/
		268
		269	typedef struct
		270	{
		271	WL head;
		272	unsigned char events;
		273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
		277	} ANFD;
		278
		279	typedef struct
		280	{
		281	W w;
		282	int events;
		283	} ANPENDING;
		284
		285	#if EV_MULTIPLICITY
		286
		287	struct ev_loop
		288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
		291	#define VAR(name,decl) decl;
		292	#include "ev_vars.h"
		293	#undef VAR
		294	};
		295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
		299
		300	#else
		301
119	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
120	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
121		306
122	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
123		308
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		310
128	/*****************************************************************************/	311	/*****************************************************************************/
129		312
130	ev_tstamp	313	ev_tstamp
131	ev_time (void)	314	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	324	#endif
142	}	325	}
143		326
144	static ev_tstamp	327	inline ev_tstamp
145	get_clock (void)	328	get_clock (void)
146	{	329	{
147	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	331	if (expect_true (have_monotonic))
149	{	332	{
…		…
154	#endif	337	#endif
155		338
156	return ev_time ();	339	return ev_time ();
157	}	340	}
158		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		351
161	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
163	{ \	354	{ \
164	int newcnt = cur; \	355	int newcnt = cur; \
165	do \	356	do \
166	{ \	357	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	359	} \
169	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
170	\	361	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	364	cur = newcnt; \
174	}	365	}
		366
		367	#define array_slim(type,stem) \
		368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		369	{ \
		370	stem ## max = array_roundsize (stem ## cnt >> 1); \
		371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		373	}
		374
		375	#define array_free(stem, idx) \
		376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		377
176	/*****************************************************************************/	378	/*****************************************************************************/
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		379
188	static void	380	static void
189	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
190	{	382	{
191	while (count--)	383	while (count--)
…		…
196		388
197	++base;	389	++base;
198	}	390	}
199	}	391	}
200		392
201	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
202	{	395	{
203	W w;	396	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		397
207	static ANPENDING *pendings [NUMPRI];	398	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	399	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216	return;	401	return;
217	}	402	}
218		403
219	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	408	}
224		409
225	static void	410	static void
226	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	412	{
228	int i;	413	int i;
229		414
230	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
232	}	417	}
233		418
234	static void	419	inline void
235	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
236	{	421	{
237	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	423	struct ev_io *w;
239		424
240	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	426	{
242	int ev = w->events & events;	427	int ev = w->events & revents;
243		428
244	if (ev)	429	if (ev)
245	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
246	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
247	}	438	}
248		439
249	/*****************************************************************************/	440	/*****************************************************************************/
250		441
251	static int *fdchanges;	442	inline void
252	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	444	{
257	int i;	445	int i;
258		446
259	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
260	{	448	{
…		…
262	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	451	struct ev_io *w;
264		452
265	int events = 0;	453	int events = 0;
266		454
267	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	456	events |= w->events;
269		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
270	anfd->reify = 0;	467	anfd->reify = 0;
271		468
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	470	anfd->events = events;
276	}
277	}	471	}
278		472
279	fdchangecnt = 0;	473	fdchangecnt = 0;
280	}	474	}
281		475
282	static void	476	static void
283	fd_change (int fd)	477	fd_change (EV_P_ int fd)
284	{	478	{
285	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
286	return;	480	return;
287		481
288	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
289		483
290	++fdchangecnt;	484	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
293	}	487	}
294		488
295	static void	489	static void
296	fd_kill (int fd)	490	fd_kill (EV_P_ int fd)
297	{	491	{
298	struct ev_io *w;	492	struct ev_io *w;
299		493
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
302	{	495	{
303	ev_io_stop (w);	496	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
306	}	509	}
307		510
308	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
309	static void	512	static void
310	fd_ebadf (void)	513	fd_ebadf (EV_P)
311	{	514	{
312	int fd;	515	int fd;
313		516
314	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	518	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	520	fd_kill (EV_A_ fd);
318	}	521	}
319		522
320	/* called on ENOMEM in select/poll to kill some fds and retry */	523	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	524	static void
322	fd_enomem (void)	525	fd_enomem (EV_P)
323	{	526	{
324	int fd = anfdmax;	527	int fd;
325		528
326	while (fd--)	529	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	530	if (anfds [fd].events)
328	{	531	{
329	close (fd);
330	fd_kill (fd);	532	fd_kill (EV_A_ fd);
331	return;	533	return;
332	}	534	}
333	}	535	}
334		536
		537	/* usually called after fork if method needs to re-arm all fds from scratch */
		538	static void
		539	fd_rearm_all (EV_P)
		540	{
		541	int fd;
		542
		543	/* this should be highly optimised to not do anything but set a flag */
		544	for (fd = 0; fd < anfdmax; ++fd)
		545	if (anfds [fd].events)
		546	{
		547	anfds [fd].events = 0;
		548	fd_change (EV_A_ fd);
		549	}
		550	}
		551
335	/*****************************************************************************/	552	/*****************************************************************************/
336		553
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	554	static void
344	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
345	{	556	{
346	WT w = timers [k];	557	WT w = heap [k];
347		558
348	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
349	{	560	{
350	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
352	k >>= 1;	563	k >>= 1;
353	}	564	}
354		565
355	timers [k] = w;	566	heap [k] = w;
356	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
357		568
358	}	569	}
359		570
360	static void	571	static void
361	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
362	{	573	{
363	WT w = timers [k];	574	WT w = heap [k];
364		575
365	while (k < (N >> 1))	576	while (k < (N >> 1))
366	{	577	{
367	int j = k << 1;	578	int j = k << 1;
368		579
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	581	++j;
371		582
372	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
373	break;	584	break;
374		585
375	timers [k] = timers [j];	586	heap [k] = heap [j];
376	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
377	k = j;	588	k = j;
378	}	589	}
379		590
380	timers [k] = w;	591	heap [k] = w;
381	timers [k]->active = k + 1;	592	((W)heap [k])->active = k + 1;
		593	}
		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
382	}	600	}
383		601
384	/*****************************************************************************/	602	/*****************************************************************************/
385		603
386	typedef struct	604	typedef struct
387	{	605	{
388	struct ev_signal *head;	606	WL head;
389	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
390	} ANSIG;	608	} ANSIG;
391		609
392	static ANSIG *signals;	610	static ANSIG *signals;
393	static int signalmax;	611	static int signalmax;
…		…
409	}	627	}
410		628
411	static void	629	static void
412	sighandler (int signum)	630	sighandler (int signum)
413	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
414	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
415		637
416	if (!gotsig)	638	if (!gotsig)
417	{	639	{
		640	int old_errno = errno;
418	gotsig = 1;	641	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
420	}	644	}
421	}	645	}
422		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 || signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
423	static void	667	static void
424	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	669	{
426	struct ev_signal *w;
427	int signum;	670	int signum;
428		671
429	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	673	gotsig = 0;
431		674
432	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
434	{	677	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	}	678	}
441		679
442	static void	680	static void
443	siginit (void)	681	fd_intern (int fd)
444	{	682	{
445	#ifndef WIN32	683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	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);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	689	#endif
		690	}
		691
		692	static void
		693	siginit (EV_P)
		694	{
		695	fd_intern (sigpipe [0]);
		696	fd_intern (sigpipe [1]);
453		697
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	701	}
457		702
458	/*****************************************************************************/	703	/*****************************************************************************/
459		704
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];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
472	static struct ev_signal childev;	709	static struct ev_signal childev;
473
474	#ifndef WIN32
475		710
476	#ifndef WCONTINUED	711	#ifndef WCONTINUED
477	# define WCONTINUED 0	712	# define WCONTINUED 0
478	#endif	713	#endif
479		714
480	static void	715	static void
481	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	717	{
483	struct ev_child *w;	718	struct ev_child *w;
		719
		720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		721	if (w->pid == pid || !w->pid)
		722	{
		723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		724	w->rpid = pid;
		725	w->rstatus = status;
		726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		727	}
		728	}
		729
		730	static void
		731	childcb (EV_P_ struct ev_signal *sw, int revents)
		732	{
484	int pid, status;	733	int pid, status;
485		734
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
488	if (w->pid == pid || !w->pid)	737	/* make sure we are called again until all childs have been reaped */
489	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	739
491	event ((W)w, EV_CHILD);	740	child_reap (EV_A_ sw, pid, pid, status);
492	}	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		742	}
493	}	743	}
494		744
495	#endif	745	#endif
496		746
497	/*****************************************************************************/	747	/*****************************************************************************/
498		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
499	#if EV_USE_KQUEUE	752	#if EV_USE_KQUEUE
500	# include "ev_kqueue.c"	753	# include "ev_kqueue.c"
501	#endif	754	#endif
502	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
503	# include "ev_epoll.c"	756	# include "ev_epoll.c"
…		…
519	ev_version_minor (void)	772	ev_version_minor (void)
520	{	773	{
521	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
522	}	775	}
523		776
524	/* return true if we are running with elevated privileges and ignore env variables */	777	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	778	static int
526	enable_secure ()	779	enable_secure (void)
527	{	780	{
		781	#ifdef _WIN32
		782	return 0;
		783	#else
528	return getuid () != geteuid ()	784	return getuid () != geteuid ()
529	|| getgid () != getegid ();	785	|| getgid () != getegid ();
		786	#endif
530	}	787	}
531		788
532	int ev_init (int methods)	789	unsigned int
		790	ev_method (EV_P)
533	{	791	{
		792	return method;
		793	}
		794
		795	static void
		796	loop_init (EV_P_ unsigned int flags)
		797	{
534	if (!ev_method)	798	if (!method)
535	{	799	{
536	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
537	{	801	{
538	struct timespec ts;	802	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	804	have_monotonic = 1;
541	}	805	}
542	#endif	806	#endif
543		807
544	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
545	now = get_clock ();	809	mn_now = get_clock ();
546	now_floor = now;	810	now_floor = mn_now;
547	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
548		812
549	if (pipe (sigpipe))	813	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"));	814	flags = atoi (getenv ("LIBEV_FLAGS"));
555	else
556	methods = EVMETHOD_ANY;
557		815
		816	if (!(flags & 0x0000ffff))
		817	flags |= 0x0000ffff;
		818
558	ev_method = 0;	819	method = 0;
		820	#if EV_USE_PORT
		821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		822	#endif
559	#if EV_USE_KQUEUE	823	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
561	#endif	825	#endif
562	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
564	#endif	828	#endif
565	#if EV_USE_POLL	829	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
567	#endif	831	#endif
568	#if EV_USE_SELECT	832	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
570	#endif	834	#endif
571		835
		836	ev_init (&sigev, sigcb);
		837	ev_set_priority (&sigev, EV_MAXPRI);
		838	}
		839	}
		840
		841	static void
		842	loop_destroy (EV_P)
		843	{
		844	int i;
		845
		846	#if EV_USE_PORT
		847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		848	#endif
		849	#if EV_USE_KQUEUE
		850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		851	#endif
		852	#if EV_USE_EPOLL
		853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		854	#endif
		855	#if EV_USE_POLL
		856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		857	#endif
		858	#if EV_USE_SELECT
		859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		860	#endif
		861
		862	for (i = NUMPRI; i--; )
		863	array_free (pending, [i]);
		864
		865	/* have to use the microsoft-never-gets-it-right macro */
		866	array_free (fdchange, EMPTY0);
		867	array_free (timer, EMPTY0);
		868	#if EV_PERIODICS
		869	array_free (periodic, EMPTY0);
		870	#endif
		871	array_free (idle, EMPTY0);
		872	array_free (prepare, EMPTY0);
		873	array_free (check, EMPTY0);
		874
		875	method = 0;
		876	}
		877
		878	static void
		879	loop_fork (EV_P)
		880	{
		881	#if EV_USE_PORT
		882	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		883	#endif
		884	#if EV_USE_KQUEUE
		885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		886	#endif
		887	#if EV_USE_EPOLL
		888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		889	#endif
		890
		891	if (ev_is_active (&sigev))
		892	{
		893	/* default loop */
		894
		895	ev_ref (EV_A);
		896	ev_io_stop (EV_A_ &sigev);
		897	close (sigpipe [0]);
		898	close (sigpipe [1]);
		899
		900	while (pipe (sigpipe))
		901	syserr ("(libev) error creating pipe");
		902
		903	siginit (EV_A);
		904	}
		905
		906	postfork = 0;
		907	}
		908
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *
		911	ev_loop_new (unsigned int flags)
		912	{
		913	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		914
		915	memset (loop, 0, sizeof (struct ev_loop));
		916
		917	loop_init (EV_A_ flags);
		918
		919	if (ev_method (EV_A))
		920	return loop;
		921
		922	return 0;
		923	}
		924
		925	void
		926	ev_loop_destroy (EV_P)
		927	{
		928	loop_destroy (EV_A);
		929	ev_free (loop);
		930	}
		931
		932	void
		933	ev_loop_fork (EV_P)
		934	{
		935	postfork = 1;
		936	}
		937
		938	#endif
		939
		940	#if EV_MULTIPLICITY
		941	struct ev_loop *
		942	ev_default_loop_init (unsigned int flags)
		943	#else
		944	int
		945	ev_default_loop (unsigned int flags)
		946	#endif
		947	{
		948	if (sigpipe [0] == sigpipe [1])
		949	if (pipe (sigpipe))
		950	return 0;
		951
		952	if (!ev_default_loop_ptr)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		956	#else
		957	ev_default_loop_ptr = 1;
		958	#endif
		959
		960	loop_init (EV_A_ flags);
		961
572	if (ev_method)	962	if (ev_method (EV_A))
573	{	963	{
574	ev_watcher_init (&sigev, sigcb);
575	siginit ();	964	siginit (EV_A);
576		965
577	#ifndef WIN32	966	#ifndef _WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	967	ev_signal_init (&childev, childcb, SIGCHLD);
		968	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	969	ev_signal_start (EV_A_ &childev);
		970	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	971	#endif
581	}	972	}
		973	else
		974	ev_default_loop_ptr = 0;
582	}	975	}
583		976
584	return ev_method;	977	return ev_default_loop_ptr;
		978	}
		979
		980	void
		981	ev_default_destroy (void)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr;
		985	#endif
		986
		987	#ifndef _WIN32
		988	ev_ref (EV_A); /* child watcher */
		989	ev_signal_stop (EV_A_ &childev);
		990	#endif
		991
		992	ev_ref (EV_A); /* signal watcher */
		993	ev_io_stop (EV_A_ &sigev);
		994
		995	close (sigpipe [0]); sigpipe [0] = 0;
		996	close (sigpipe [1]); sigpipe [1] = 0;
		997
		998	loop_destroy (EV_A);
		999	}
		1000
		1001	void
		1002	ev_default_fork (void)
		1003	{
		1004	#if EV_MULTIPLICITY
		1005	struct ev_loop *loop = ev_default_loop_ptr;
		1006	#endif
		1007
		1008	if (method)
		1009	postfork = 1;
585	}	1010	}
586		1011
587	/*****************************************************************************/	1012	/*****************************************************************************/
588		1013
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	1014	static int
		1015	any_pending (EV_P)
		1016	{
		1017	int pri;
		1018
		1019	for (pri = NUMPRI; pri--; )
		1020	if (pendingcnt [pri])
		1021	return 1;
		1022
		1023	return 0;
		1024	}
		1025
		1026	inline void
619	call_pending (void)	1027	call_pending (EV_P)
620	{	1028	{
621	int pri;	1029	int pri;
622		1030
623	for (pri = NUMPRI; pri--; )	1031	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	1032	while (pendingcnt [pri])
625	{	1033	{
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		1035
628	if (p->w)	1036	if (expect_true (p->w))
629	{	1037	{
630	p->w->pending = 0;	1038	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	1039	EV_CB_INVOKE (p->w, p->events);
632	}	1040	}
633	}	1041	}
634	}	1042	}
635		1043
636	static void	1044	inline void
637	timers_reify (void)	1045	timers_reify (EV_P)
638	{	1046	{
639	while (timercnt && timers [0]->at <= now)	1047	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	1048	{
641	struct ev_timer *w = timers [0];	1049	struct ev_timer *w = timers [0];
		1050
		1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));
642		1052
643	/* first reschedule or stop timer */	1053	/* first reschedule or stop timer */
644	if (w->repeat)	1054	if (w->repeat)
645	{	1055	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1057
647	w->at = now + w->repeat;	1058	((WT)w)->at += w->repeat;
		1059	if (((WT)w)->at < mn_now)
		1060	((WT)w)->at = mn_now;
		1061
648	downheap ((WT *)timers, timercnt, 0);	1062	downheap ((WT *)timers, timercnt, 0);
649	}	1063	}
650	else	1064	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		1066
653	event ((W)w, EV_TIMEOUT);	1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
654	}	1068	}
655	}	1069	}
656		1070
657	static void	1071	#if EV_PERIODICS
		1072	inline void
658	periodics_reify (void)	1073	periodics_reify (EV_P)
659	{	1074	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
661	{	1076	{
662	struct ev_periodic *w = periodics [0];	1077	struct ev_periodic *w = periodics [0];
663		1078
		1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1080
664	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
665	if (w->interval)	1082	if (w->reschedule_cb)
666	{	1083	{
		1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1086	downheap ((WT *)periodics, periodiccnt, 0);
		1087	}
		1088	else if (w->interval)
		1089	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1090	((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));	1091	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);	1092	downheap ((WT *)periodics, periodiccnt, 0);
670	}	1093	}
671	else	1094	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1096
674	event ((W)w, EV_PERIODIC);	1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
675	}	1098	}
676	}	1099	}
677		1100
678	static void	1101	static void
679	periodics_reschedule (ev_tstamp diff)	1102	periodics_reschedule (EV_P)
680	{	1103	{
681	int i;	1104	int i;
682		1105
683	/* adjust periodics after time jump */	1106	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	1107	for (i = 0; i < periodiccnt; ++i)
685	{	1108	{
686	struct ev_periodic *w = periodics [i];	1109	struct ev_periodic *w = periodics [i];
687		1110
		1111	if (w->reschedule_cb)
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
688	if (w->interval)	1113	else if (w->interval)
689	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1114	((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	}	1115	}
701	}
702		1116
703	static int	1117	/* now rebuild the heap */
		1118	for (i = periodiccnt >> 1; i--; )
		1119	downheap ((WT *)periodics, periodiccnt, i);
		1120	}
		1121	#endif
		1122
		1123	inline int
704	time_update_monotonic (void)	1124	time_update_monotonic (EV_P)
705	{	1125	{
706	now = get_clock ();	1126	mn_now = get_clock ();
707		1127
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	1129	{
710	ev_now = now + diff;	1130	ev_rt_now = rtmn_diff + mn_now;
711	return 0;	1131	return 0;
712	}	1132	}
713	else	1133	else
714	{	1134	{
715	now_floor = now;	1135	now_floor = mn_now;
716	ev_now = ev_time ();	1136	ev_rt_now = ev_time ();
717	return 1;	1137	return 1;
718	}	1138	}
719	}	1139	}
720		1140
721	static void	1141	inline void
722	time_update (void)	1142	time_update (EV_P)
723	{	1143	{
724	int i;	1144	int i;
725		1145
726	#if EV_USE_MONOTONIC	1146	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	1147	if (expect_true (have_monotonic))
728	{	1148	{
729	if (time_update_monotonic ())	1149	if (time_update_monotonic (EV_A))
730	{	1150	{
731	ev_tstamp odiff = diff;	1151	ev_tstamp odiff = rtmn_diff;
732		1152
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	1154	{
735	diff = ev_now - now;	1155	rtmn_diff = ev_rt_now - mn_now;
736		1156
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	1158	return; /* all is well */
739		1159
740	ev_now = ev_time ();	1160	ev_rt_now = ev_time ();
741	now = get_clock ();	1161	mn_now = get_clock ();
742	now_floor = now;	1162	now_floor = mn_now;
743	}	1163	}
744		1164
		1165	# if EV_PERIODICS
745	periodics_reschedule (diff - odiff);	1166	periodics_reschedule (EV_A);
		1167	# endif
746	/* no timer adjustment, as the monotonic clock doesn't jump */	1168	/* no timer adjustment, as the monotonic clock doesn't jump */
		1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	1170	}
748	}	1171	}
749	else	1172	else
750	#endif	1173	#endif
751	{	1174	{
752	ev_now = ev_time ();	1175	ev_rt_now = ev_time ();
753		1176
754	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1177	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	1178	{
		1179	#if EV_PERIODICS
756	periodics_reschedule (ev_now - now);	1180	periodics_reschedule (EV_A);
		1181	#endif
757		1182
758	/* adjust timers. this is easy, as the offset is the same for all */	1183	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	1184	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	1185	((WT)timers [i])->at += ev_rt_now - mn_now;
761	}	1186	}
762		1187
763	now = ev_now;	1188	mn_now = ev_rt_now;
764	}	1189	}
765	}	1190	}
766		1191
767	int ev_loop_done;	1192	void
		1193	ev_ref (EV_P)
		1194	{
		1195	++activecnt;
		1196	}
768		1197
		1198	void
		1199	ev_unref (EV_P)
		1200	{
		1201	--activecnt;
		1202	}
		1203
		1204	static int loop_done;
		1205
		1206	void
769	void ev_loop (int flags)	1207	ev_loop (EV_P_ int flags)
770	{	1208	{
771	double block;	1209	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
773		1211
774	do	1212	while (activecnt)
775	{	1213	{
776	/* queue check watchers (and execute them) */	1214	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	1215	if (expect_false (preparecnt))
778	{	1216	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	1218	call_pending (EV_A);
781	}	1219	}
782		1220
		1221	/* we might have forked, so reify kernel state if necessary */
		1222	if (expect_false (postfork))
		1223	loop_fork (EV_A);
		1224
783	/* update fd-related kernel structures */	1225	/* update fd-related kernel structures */
784	fd_reify ();	1226	fd_reify (EV_A);
785		1227
786	/* calculate blocking time */	1228	/* calculate blocking time */
787		1229
788	/* we only need this for !monotonic clockor timers, but as we basically	1230	/* we only need this for !monotonic clock or timers, but as we basically
789	always have timers, we just calculate it always */	1231	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	1232	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1233	if (expect_true (have_monotonic))
792	time_update_monotonic ();	1234	time_update_monotonic (EV_A);
793	else	1235	else
794	#endif	1236	#endif
795	{	1237	{
796	ev_now = ev_time ();	1238	ev_rt_now = ev_time ();
797	now = ev_now;	1239	mn_now = ev_rt_now;
798	}	1240	}
799		1241
800	if (flags & EVLOOP_NONBLOCK || idlecnt)	1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
801	block = 0.;	1243	block = 0.;
802	else	1244	else
803	{	1245	{
804	block = MAX_BLOCKTIME;	1246	block = MAX_BLOCKTIME;
805		1247
806	if (timercnt)	1248	if (timercnt)
807	{	1249	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	1251	if (block > to) block = to;
810	}	1252	}
811		1253
		1254	#if EV_PERIODICS
812	if (periodiccnt)	1255	if (periodiccnt)
813	{	1256	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
815	if (block > to) block = to;	1258	if (block > to) block = to;
816	}	1259	}
		1260	#endif
817		1261
818	if (block < 0.) block = 0.;	1262	if (expect_false (block < 0.)) block = 0.;
819	}	1263	}
820		1264
821	method_poll (block);	1265	method_poll (EV_A_ block);
822		1266
823	/* update ev_now, do magic */	1267	/* update ev_rt_now, do magic */
824	time_update ();	1268	time_update (EV_A);
825		1269
826	/* queue pending timers and reschedule them */	1270	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1271	timers_reify (EV_A); /* relative timers called last */
		1272	#if EV_PERIODICS
828	periodics_reify (); /* absolute timers called first */	1273	periodics_reify (EV_A); /* absolute timers called first */
		1274	#endif
829		1275
830	/* queue idle watchers unless io or timers are pending */	1276	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1277	if (idlecnt && !any_pending (EV_A))
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1279
834	/* queue check watchers, to be executed first */	1280	/* queue check watchers, to be executed first */
835	if (checkcnt)	1281	if (expect_false (checkcnt))
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1283
838	call_pending ();	1284	call_pending (EV_A);
839	}
840	while (!ev_loop_done);
841		1285
		1286	if (expect_false (loop_done))
		1287	break;
		1288	}
		1289
842	if (ev_loop_done != 2)	1290	if (loop_done != 2)
843	ev_loop_done = 0;	1291	loop_done = 0;
		1292	}
		1293
		1294	void
		1295	ev_unloop (EV_P_ int how)
		1296	{
		1297	loop_done = how;
844	}	1298	}
845		1299
846	/*****************************************************************************/	1300	/*****************************************************************************/
847		1301
848	static void	1302	inline void
849	wlist_add (WL *head, WL elem)	1303	wlist_add (WL *head, WL elem)
850	{	1304	{
851	elem->next = *head;	1305	elem->next = *head;
852	*head = elem;	1306	*head = elem;
853	}	1307	}
854		1308
855	static void	1309	inline void
856	wlist_del (WL *head, WL elem)	1310	wlist_del (WL *head, WL elem)
857	{	1311	{
858	while (*head)	1312	while (*head)
859	{	1313	{
860	if (*head == elem)	1314	if (*head == elem)
…		…
865		1319
866	head = &(*head)->next;	1320	head = &(*head)->next;
867	}	1321	}
868	}	1322	}
869		1323
870	static void	1324	inline void
871	ev_clear_pending (W w)	1325	ev_clear_pending (EV_P_ W w)
872	{	1326	{
873	if (w->pending)	1327	if (w->pending)
874	{	1328	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1330	w->pending = 0;
877	}	1331	}
878	}	1332	}
879		1333
880	static void	1334	inline void
881	ev_start (W w, int active)	1335	ev_start (EV_P_ W w, int active)
882	{	1336	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1339
886	w->active = active;	1340	w->active = active;
		1341	ev_ref (EV_A);
887	}	1342	}
888		1343
889	static void	1344	inline void
890	ev_stop (W w)	1345	ev_stop (EV_P_ W w)
891	{	1346	{
		1347	ev_unref (EV_A);
892	w->active = 0;	1348	w->active = 0;
893	}	1349	}
894		1350
895	/*****************************************************************************/	1351	/*****************************************************************************/
896		1352
897	void	1353	void
898	ev_io_start (struct ev_io *w)	1354	ev_io_start (EV_P_ struct ev_io *w)
899	{	1355	{
900	int fd = w->fd;	1356	int fd = w->fd;
901		1357
902	if (ev_is_active (w))	1358	if (expect_false (ev_is_active (w)))
903	return;	1359	return;
904		1360
905	assert (("ev_io_start called with negative fd", fd >= 0));	1361	assert (("ev_io_start called with negative fd", fd >= 0));
906		1362
907	ev_start ((W)w, 1);	1363	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1366
911	fd_change (fd);	1367	fd_change (EV_A_ fd);
912	}	1368	}
913		1369
914	void	1370	void
915	ev_io_stop (struct ev_io *w)	1371	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1372	{
917	ev_clear_pending ((W)w);	1373	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1374	if (expect_false (!ev_is_active (w)))
919	return;	1375	return;
		1376
		1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
920		1378
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
923		1381
924	fd_change (w->fd);	1382	fd_change (EV_A_ w->fd);
925	}	1383	}
926		1384
927	void	1385	void
928	ev_timer_start (struct ev_timer *w)	1386	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1387	{
930	if (ev_is_active (w))	1388	if (expect_false (ev_is_active (w)))
931	return;	1389	return;
932		1390
933	w->at += now;	1391	((WT)w)->at += mn_now;
934		1392
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1394
937	ev_start ((W)w, ++timercnt);	1395	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
939	timers [timercnt - 1] = w;	1397	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1398	upheap ((WT *)timers, timercnt - 1);
941	}
942		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401	}
		1402
943	void	1403	void
944	ev_timer_stop (struct ev_timer *w)	1404	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1405	{
946	ev_clear_pending ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1407	if (expect_false (!ev_is_active (w)))
948	return;	1408	return;
949		1409
		1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1411
950	if (w->active < timercnt--)	1412	if (expect_true (((W)w)->active < timercnt--))
951	{	1413	{
952	timers [w->active - 1] = timers [timercnt];	1414	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1416	}
955		1417
956	w->at = w->repeat;	1418	((WT)w)->at -= mn_now;
957		1419
958	ev_stop ((W)w);	1420	ev_stop (EV_A_ (W)w);
959	}	1421	}
960		1422
961	void	1423	void
962	ev_timer_again (struct ev_timer *w)	1424	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1425	{
964	if (ev_is_active (w))	1426	if (ev_is_active (w))
965	{	1427	{
966	if (w->repeat)	1428	if (w->repeat)
967	{	1429	{
968	w->at = now + w->repeat;	1430	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1432	}
971	else	1433	else
972	ev_timer_stop (w);	1434	ev_timer_stop (EV_A_ w);
973	}	1435	}
974	else if (w->repeat)	1436	else if (w->repeat)
		1437	{
		1438	w->at = w->repeat;
975	ev_timer_start (w);	1439	ev_timer_start (EV_A_ w);
		1440	}
976	}	1441	}
977		1442
		1443	#if EV_PERIODICS
978	void	1444	void
979	ev_periodic_start (struct ev_periodic *w)	1445	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1446	{
981	if (ev_is_active (w))	1447	if (expect_false (ev_is_active (w)))
982	return;	1448	return;
983		1449
		1450	if (w->reschedule_cb)
		1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1452	else if (w->interval)
		1453	{
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1454	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 */	1455	/* 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;	1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1457	}
989		1458
990	ev_start ((W)w, ++periodiccnt);	1459	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
992	periodics [periodiccnt - 1] = w;	1461	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1462	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465	}
		1466
996	void	1467	void
997	ev_periodic_stop (struct ev_periodic *w)	1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1469	{
999	ev_clear_pending ((W)w);	1470	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1471	if (expect_false (!ev_is_active (w)))
1001	return;	1472	return;
1002		1473
		1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1475
1003	if (w->active < periodiccnt--)	1476	if (expect_true (((W)w)->active < periodiccnt--))
1004	{	1477	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1480	}
1008		1481
1009	ev_stop ((W)w);	1482	ev_stop (EV_A_ (W)w);
1010	}	1483	}
1011		1484
1012	void	1485	void
		1486	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1487	{
		1488	/* TODO: use adjustheap and recalculation */
		1489	ev_periodic_stop (EV_A_ w);
		1490	ev_periodic_start (EV_A_ w);
		1491	}
		1492	#endif
		1493
		1494	void
		1495	ev_idle_start (EV_P_ struct ev_idle *w)
		1496	{
		1497	if (expect_false (ev_is_active (w)))
		1498	return;
		1499
		1500	ev_start (EV_A_ (W)w, ++idlecnt);
		1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1502	idles [idlecnt - 1] = w;
		1503	}
		1504
		1505	void
		1506	ev_idle_stop (EV_P_ struct ev_idle *w)
		1507	{
		1508	ev_clear_pending (EV_A_ (W)w);
		1509	if (expect_false (!ev_is_active (w)))
		1510	return;
		1511
		1512	idles [((W)w)->active - 1] = idles [--idlecnt];
		1513	ev_stop (EV_A_ (W)w);
		1514	}
		1515
		1516	void
		1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1518	{
		1519	if (expect_false (ev_is_active (w)))
		1520	return;
		1521
		1522	ev_start (EV_A_ (W)w, ++preparecnt);
		1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1524	prepares [preparecnt - 1] = w;
		1525	}
		1526
		1527	void
		1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1529	{
		1530	ev_clear_pending (EV_A_ (W)w);
		1531	if (expect_false (!ev_is_active (w)))
		1532	return;
		1533
		1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1535	ev_stop (EV_A_ (W)w);
		1536	}
		1537
		1538	void
		1539	ev_check_start (EV_P_ struct ev_check *w)
		1540	{
		1541	if (expect_false (ev_is_active (w)))
		1542	return;
		1543
		1544	ev_start (EV_A_ (W)w, ++checkcnt);
		1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1546	checks [checkcnt - 1] = w;
		1547	}
		1548
		1549	void
		1550	ev_check_stop (EV_P_ struct ev_check *w)
		1551	{
		1552	ev_clear_pending (EV_A_ (W)w);
		1553	if (expect_false (!ev_is_active (w)))
		1554	return;
		1555
		1556	checks [((W)w)->active - 1] = checks [--checkcnt];
		1557	ev_stop (EV_A_ (W)w);
		1558	}
		1559
		1560	#ifndef SA_RESTART
		1561	# define SA_RESTART 0
		1562	#endif
		1563
		1564	void
1013	ev_signal_start (struct ev_signal *w)	1565	ev_signal_start (EV_P_ struct ev_signal *w)
1014	{	1566	{
		1567	#if EV_MULTIPLICITY
		1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1569	#endif
1015	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
1016	return;	1571	return;
1017		1572
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1574
1020	ev_start ((W)w, 1);	1575	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1576	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1577	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1578
1024	if (!w->next)	1579	if (!((WL)w)->next)
1025	{	1580	{
		1581	#if _WIN32
		1582	signal (w->signum, sighandler);
		1583	#else
1026	struct sigaction sa;	1584	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1585	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1586	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1587	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1588	sigaction (w->signum, &sa, 0);
		1589	#endif
1031	}	1590	}
1032	}	1591	}
1033		1592
1034	void	1593	void
1035	ev_signal_stop (struct ev_signal *w)	1594	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1595	{
1037	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1039	return;	1598	return;
1040		1599
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
1043		1602
1044	if (!signals [w->signum - 1].head)	1603	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1604	signal (w->signum, SIG_DFL);
1046	}	1605	}
1047		1606
1048	void	1607	void
1049	ev_idle_start (struct ev_idle *w)
1050	{
1051	if (ev_is_active (w))
1052	return;
1053
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)	1608	ev_child_start (EV_P_ struct ev_child *w)
1116	{	1609	{
		1610	#if EV_MULTIPLICITY
		1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1612	#endif
1117	if (ev_is_active (w))	1613	if (expect_false (ev_is_active (w)))
1118	return;	1614	return;
1119		1615
1120	ev_start ((W)w, 1);	1616	ev_start (EV_A_ (W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}	1618	}
1123		1619
1124	void	1620	void
1125	ev_child_stop (struct ev_child *w)	1621	ev_child_stop (EV_P_ struct ev_child *w)
1126	{	1622	{
1127	ev_clear_pending ((W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1128	if (ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1129	return;	1625	return;
1130		1626
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1628	ev_stop (EV_A_ (W)w);
1133	}	1629	}
1134		1630
1135	/*****************************************************************************/	1631	/*****************************************************************************/
1136		1632
1137	struct ev_once	1633	struct ev_once
…		…
1141	void (*cb)(int revents, void *arg);	1637	void (*cb)(int revents, void *arg);
1142	void *arg;	1638	void *arg;
1143	};	1639	};
1144		1640
1145	static void	1641	static void
1146	once_cb (struct ev_once *once, int revents)	1642	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1643	{
1148	void (*cb)(int revents, void *arg) = once->cb;	1644	void (*cb)(int revents, void *arg) = once->cb;
1149	void *arg = once->arg;	1645	void *arg = once->arg;
1150		1646
1151	ev_io_stop (&once->io);	1647	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1648	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1649	ev_free (once);
1154		1650
1155	cb (revents, arg);	1651	cb (revents, arg);
1156	}	1652	}
1157		1653
1158	static void	1654	static void
1159	once_cb_io (struct ev_io *w, int revents)	1655	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1656	{
1161	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1657	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1162	}	1658	}
1163		1659
1164	static void	1660	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1662	{
1167	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1663	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1168	}	1664	}
1169		1665
1170	void	1666	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1667	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1172	{	1668	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1669	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1174		1670
1175	if (!once)	1671	if (expect_false (!once))
		1672	{
1176	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1673	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1177	else	1674	return;
1178	{	1675	}
		1676
1179	once->cb = cb;	1677	once->cb = cb;
1180	once->arg = arg;	1678	once->arg = arg;
1181		1679
1182	ev_watcher_init (&once->io, once_cb_io);	1680	ev_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1681	if (fd >= 0)
1184	{	1682	{
1185	ev_io_set (&once->io, fd, events);	1683	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1684	ev_io_start (EV_A_ &once->io);
1187	}	1685	}
1188		1686
1189	ev_watcher_init (&once->to, once_cb_to);	1687	ev_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1688	if (timeout >= 0.)
1191	{	1689	{
1192	ev_timer_set (&once->to, timeout, 0.);	1690	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1691	ev_timer_start (EV_A_ &once->to);
1194	}
1195	}
1196	}
1197
1198	/*****************************************************************************/
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	}
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	{	1692	}
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
1254
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	}	1693	}
1275		1694
		1695	#ifdef __cplusplus
		1696	}
1276	#endif	1697	#endif
1277		1698
1278
1279
1280

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