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Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.123 by root, Sat Nov 17 02:23:54 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
33	#endif	68	#endif
34		69
35	#include <math.h>	70	#include <math.h>
36	#include <stdlib.h>	71	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	72	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	73	#include <stddef.h>
41		74
42	#include <stdio.h>	75	#include <stdio.h>
43		76
44	#include <assert.h>	77	#include <assert.h>
45	#include <errno.h>	78	#include <errno.h>
46	#include <sys/types.h>	79	#include <sys/types.h>
		80	#include <time.h>
		81
		82	#include <signal.h>
		83
47	#ifndef WIN32	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
48	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	93	# endif
50	#include <sys/time.h>	94	#endif
51	#include <time.h>
52		95
53	/**/	96	/**/
54		97
55	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
57	#endif	104	#endif
58		105
59	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
61	#endif	108	#endif
62		109
63	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
65	#endif	116	#endif
66		117
67	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
69	#endif	120	#endif
70		121
71	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
73	#endif	124	#endif
74		125
75	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
77	#endif	128	#endif
78		129
79	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
80		137
81	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
84	#endif	141	#endif
…		…
86	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
89	#endif	146	#endif
90		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
91	/**/	152	/**/
92		153
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#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) */	155	#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 */	156	#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 */	157	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
98	#include "ev.h"	162	# include "ev.h"
		163	#endif
99		164
100	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	167	# define inline static inline
103	#else	168	#else
104	# define expect(expr,value) (expr)	169	# define expect(expr,value) (expr)
105	# define inline static	170	# define inline static
106	#endif	171	#endif
107		172
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
110		175
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
114	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
117		185
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		187
		188	#ifdef _WIN32
		189	# include "ev_win32.c"
		190	#endif
		191
		192	/*****************************************************************************/
		193
		194	static void (*syserr_cb)(const char *msg);
		195
		196	void ev_set_syserr_cb (void (*cb)(const char *msg))
		197	{
		198	syserr_cb = cb;
		199	}
		200
		201	static void
		202	syserr (const char *msg)
		203	{
		204	if (!msg)
		205	msg = "(libev) system error";
		206
		207	if (syserr_cb)
		208	syserr_cb (msg);
		209	else
		210	{
		211	perror (msg);
		212	abort ();
		213	}
		214	}
		215
		216	static void *(*alloc)(void *ptr, long size);
		217
		218	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		219	{
		220	alloc = cb;
		221	}
		222
		223	static void *
		224	ev_realloc (void *ptr, long size)
		225	{
		226	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		227
		228	if (!ptr && size)
		229	{
		230	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		231	abort ();
		232	}
		233
		234	return ptr;
		235	}
		236
		237	#define ev_malloc(size) ev_realloc (0, (size))
		238	#define ev_free(ptr) ev_realloc ((ptr), 0)
		239
		240	/*****************************************************************************/
		241
		242	typedef struct
		243	{
		244	WL head;
		245	unsigned char events;
		246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
		250	} ANFD;
		251
		252	typedef struct
		253	{
		254	W w;
		255	int events;
		256	} ANPENDING;
		257
		258	#if EV_MULTIPLICITY
		259
		260	struct ev_loop
		261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
		264	#define VAR(name,decl) decl;
		265	#include "ev_vars.h"
		266	#undef VAR
		267	};
		268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
		272
		273	#else
		274
119	ev_tstamp ev_now;	275	ev_tstamp ev_rt_now;
120	int ev_method;	276	#define VAR(name,decl) static decl;
		277	#include "ev_vars.h"
		278	#undef VAR
121		279
122	static int have_monotonic; /* runtime */	280	static int ev_default_loop_ptr;
123		281
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	282	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		283
128	/*****************************************************************************/	284	/*****************************************************************************/
129		285
130	ev_tstamp	286	ev_tstamp
131	ev_time (void)	287	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	295	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	296	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	297	#endif
142	}	298	}
143		299
144	static ev_tstamp	300	inline ev_tstamp
145	get_clock (void)	301	get_clock (void)
146	{	302	{
147	#if EV_USE_MONOTONIC	303	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	304	if (expect_true (have_monotonic))
149	{	305	{
…		…
154	#endif	310	#endif
155		311
156	return ev_time ();	312	return ev_time ();
157	}	313	}
158		314
		315	#if EV_MULTIPLICITY
		316	ev_tstamp
		317	ev_now (EV_P)
		318	{
		319	return ev_rt_now;
		320	}
		321	#endif
		322
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	323	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		324
161	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
163	{ \	327	{ \
164	int newcnt = cur; \	328	int newcnt = cur; \
165	do \	329	do \
166	{ \	330	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	332	} \
169	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
170	\	334	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	335	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	337	cur = newcnt; \
174	}	338	}
		339
		340	#define array_slim(type,stem) \
		341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		342	{ \
		343	stem ## max = array_roundsize (stem ## cnt >> 1); \
		344	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		346	}
		347
		348	#define array_free(stem, idx) \
		349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		350
176	/*****************************************************************************/	351	/*****************************************************************************/
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		352
188	static void	353	static void
189	anfds_init (ANFD *base, int count)	354	anfds_init (ANFD *base, int count)
190	{	355	{
191	while (count--)	356	while (count--)
…		…
196		361
197	++base;	362	++base;
198	}	363	}
199	}	364	}
200		365
201	typedef struct	366	void
		367	ev_feed_event (EV_P_ void *w, int revents)
202	{	368	{
203	W w;	369	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		370
207	static ANPENDING *pendings [NUMPRI];	371	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	{	372	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216	return;	374	return;
217	}	375	}
218		376
219	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	381	}
224		382
225	static void	383	static void
226	queue_events (W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	385	{
228	int i;	386	int i;
229		387
230	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
232	}	390	}
233		391
234	static void	392	inline void
235	fd_event (int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
236	{	394	{
237	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	396	struct ev_io *w;
239		397
240	for (w = anfd->head; w; w = w->next)	398	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	399	{
242	int ev = w->events & events;	400	int ev = w->events & revents;
243		401
244	if (ev)	402	if (ev)
245	event ((W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
246	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
247	}	411	}
248		412
249	/*****************************************************************************/	413	/*****************************************************************************/
250		414
251	static int *fdchanges;	415	inline void
252	static int fdchangemax, fdchangecnt;	416	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	417	{
257	int i;	418	int i;
258		419
259	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
260	{	421	{
…		…
262	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	424	struct ev_io *w;
264		425
265	int events = 0;	426	int events = 0;
266		427
267	for (w = anfd->head; w; w = w->next)	428	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	429	events |= w->events;
269		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
270	anfd->reify = 0;	440	anfd->reify = 0;
271		441
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	443	anfd->events = events;
276	}
277	}	444	}
278		445
279	fdchangecnt = 0;	446	fdchangecnt = 0;
280	}	447	}
281		448
282	static void	449	static void
283	fd_change (int fd)	450	fd_change (EV_P_ int fd)
284	{	451	{
285	if (anfds [fd].reify || fdchangecnt < 0)	452	if (expect_false (anfds [fd].reify))
286	return;	453	return;
287		454
288	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
289		456
290	++fdchangecnt;	457	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
293	}	460	}
294		461
295	static void	462	static void
296	fd_kill (int fd)	463	fd_kill (EV_P_ int fd)
297	{	464	{
298	struct ev_io *w;	465	struct ev_io *w;
299		466
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
302	{	468	{
303	ev_io_stop (w);	469	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	470	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	471	}
		472	}
		473
		474	inline int
		475	fd_valid (int fd)
		476	{
		477	#ifdef _WIN32
		478	return _get_osfhandle (fd) != -1;
		479	#else
		480	return fcntl (fd, F_GETFD) != -1;
		481	#endif
306	}	482	}
307		483
308	/* called on EBADF to verify fds */	484	/* called on EBADF to verify fds */
309	static void	485	static void
310	fd_ebadf (void)	486	fd_ebadf (EV_P)
311	{	487	{
312	int fd;	488	int fd;
313		489
314	for (fd = 0; fd < anfdmax; ++fd)	490	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	491	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	492	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	493	fd_kill (EV_A_ fd);
318	}	494	}
319		495
320	/* called on ENOMEM in select/poll to kill some fds and retry */	496	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	497	static void
322	fd_enomem (void)	498	fd_enomem (EV_P)
323	{	499	{
324	int fd = anfdmax;	500	int fd;
325		501
326	while (fd--)	502	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	503	if (anfds [fd].events)
328	{	504	{
329	close (fd);
330	fd_kill (fd);	505	fd_kill (EV_A_ fd);
331	return;	506	return;
332	}	507	}
333	}	508	}
334		509
		510	/* usually called after fork if method needs to re-arm all fds from scratch */
		511	static void
		512	fd_rearm_all (EV_P)
		513	{
		514	int fd;
		515
		516	/* this should be highly optimised to not do anything but set a flag */
		517	for (fd = 0; fd < anfdmax; ++fd)
		518	if (anfds [fd].events)
		519	{
		520	anfds [fd].events = 0;
		521	fd_change (EV_A_ fd);
		522	}
		523	}
		524
335	/*****************************************************************************/	525	/*****************************************************************************/
336		526
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	527	static void
344	upheap (WT *timers, int k)	528	upheap (WT *heap, int k)
345	{	529	{
346	WT w = timers [k];	530	WT w = heap [k];
347		531
348	while (k && timers [k >> 1]->at > w->at)	532	while (k && heap [k >> 1]->at > w->at)
349	{	533	{
350	timers [k] = timers [k >> 1];	534	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
352	k >>= 1;	536	k >>= 1;
353	}	537	}
354		538
355	timers [k] = w;	539	heap [k] = w;
356	timers [k]->active = k + 1;	540	((W)heap [k])->active = k + 1;
357		541
358	}	542	}
359		543
360	static void	544	static void
361	downheap (WT *timers, int N, int k)	545	downheap (WT *heap, int N, int k)
362	{	546	{
363	WT w = timers [k];	547	WT w = heap [k];
364		548
365	while (k < (N >> 1))	549	while (k < (N >> 1))
366	{	550	{
367	int j = k << 1;	551	int j = k << 1;
368		552
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	553	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	554	++j;
371		555
372	if (w->at <= timers [j]->at)	556	if (w->at <= heap [j]->at)
373	break;	557	break;
374		558
375	timers [k] = timers [j];	559	heap [k] = heap [j];
376	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
377	k = j;	561	k = j;
378	}	562	}
379		563
380	timers [k] = w;	564	heap [k] = w;
381	timers [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
		566	}
		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
382	}	573	}
383		574
384	/*****************************************************************************/	575	/*****************************************************************************/
385		576
386	typedef struct	577	typedef struct
387	{	578	{
388	struct ev_signal *head;	579	WL head;
389	sig_atomic_t volatile gotsig;	580	sig_atomic_t volatile gotsig;
390	} ANSIG;	581	} ANSIG;
391		582
392	static ANSIG *signals;	583	static ANSIG *signals;
393	static int signalmax;	584	static int signalmax;
…		…
409	}	600	}
410		601
411	static void	602	static void
412	sighandler (int signum)	603	sighandler (int signum)
413	{	604	{
		605	#if _WIN32
		606	signal (signum, sighandler);
		607	#endif
		608
414	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
415		610
416	if (!gotsig)	611	if (!gotsig)
417	{	612	{
418	int old_errno = errno;	613	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	616	errno = old_errno;
422	}	617	}
423	}	618	}
424		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 || signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
425	static void	640	static void
426	sigcb (struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	642	{
428	struct ev_signal *w;
429	int signum;	643	int signum;
430		644
431	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	646	gotsig = 0;
433		647
434	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
436	{	650	ev_feed_signal_event (EV_A_ signum + 1);
437	signals [signum].gotsig = 0;
438
439	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);
441	}
442	}	651	}
443		652
444	static void	653	static void
445	siginit (void)	654	fd_intern (int fd)
446	{	655	{
447	#ifndef WIN32	656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	660	fcntl (fd, F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450
451	/* rather than sort out wether we really need nb, set it */
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	661	fcntl (fd, F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	662	#endif
		663	}
		664
		665	static void
		666	siginit (EV_P)
		667	{
		668	fd_intern (sigpipe [0]);
		669	fd_intern (sigpipe [1]);
455		670
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	672	ev_io_start (EV_A_ &sigev);
		673	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	674	}
459		675
460	/*****************************************************************************/	676	/*****************************************************************************/
461		677
462	static struct ev_idle **idles;
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472
473	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
		679
		680	#ifndef _WIN32
		681
474	static struct ev_signal childev;	682	static struct ev_signal childev;
475
476	#ifndef WIN32
477		683
478	#ifndef WCONTINUED	684	#ifndef WCONTINUED
479	# define WCONTINUED 0	685	# define WCONTINUED 0
480	#endif	686	#endif
481		687
482	static void	688	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	689	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	690	{
485	struct ev_child *w;	691	struct ev_child *w;
486		692
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	693	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488	if (w->pid == pid || !w->pid)	694	if (w->pid == pid || !w->pid)
489	{	695	{
490	w->priority = sw->priority; /* need to do it *now* */	696	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	697	w->rpid = pid;
492	w->rstatus = status;	698	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
495	}	700	}
496	}	701	}
497		702
498	static void	703	static void
499	childcb (struct ev_signal *sw, int revents)	704	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	705	{
501	int pid, status;	706	int pid, status;
502		707
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	708	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	709	{
506	/* make sure we are called again until all childs have been reaped */	710	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		712
509	child_reap (sw, pid, pid, status);	713	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	715	}
512	}	716	}
513		717
514	#endif	718	#endif
515		719
516	/*****************************************************************************/	720	/*****************************************************************************/
517		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
518	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
520	#endif	727	#endif
521	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
540	return EV_VERSION_MINOR;	747	return EV_VERSION_MINOR;
541	}	748	}
542		749
543	/* return true if we are running with elevated privileges and should ignore env variables */	750	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	751	static int
545	enable_secure ()	752	enable_secure (void)
546	{	753	{
547	#ifdef WIN32	754	#ifdef _WIN32
548	return 0;	755	return 0;
549	#else	756	#else
550	return getuid () != geteuid ()	757	return getuid () != geteuid ()
551	|| getgid () != getegid ();	758	|| getgid () != getegid ();
552	#endif	759	#endif
553	}	760	}
554		761
555	int ev_init (int methods)	762	unsigned int
		763	ev_method (EV_P)
556	{	764	{
		765	return method;
		766	}
		767
		768	static void
		769	loop_init (EV_P_ unsigned int flags)
		770	{
557	if (!ev_method)	771	if (!method)
558	{	772	{
559	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
560	{	774	{
561	struct timespec ts;	775	struct timespec ts;
562	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
563	have_monotonic = 1;	777	have_monotonic = 1;
564	}	778	}
565	#endif	779	#endif
566		780
567	ev_now = ev_time ();	781	ev_rt_now = ev_time ();
568	now = get_clock ();	782	mn_now = get_clock ();
569	now_floor = now;	783	now_floor = mn_now;
570	diff = ev_now - now;	784	rtmn_diff = ev_rt_now - mn_now;
571		785
572	if (pipe (sigpipe))	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
573	return 0;
574
575	if (methods == EVMETHOD_AUTO)
576	if (!enable_secure () && getenv ("LIBEV_METHODS"))
577	methods = atoi (getenv ("LIBEV_METHODS"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
578	else
579	methods = EVMETHOD_ANY;
580		788
		789	if (!(flags & 0x0000ffff))
		790	flags |= 0x0000ffff;
		791
581	ev_method = 0;	792	method = 0;
		793	#if EV_USE_PORT
		794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		795	#endif
582	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
583	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
584	#endif	798	#endif
585	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
586	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
587	#endif	801	#endif
588	#if EV_USE_POLL	802	#if EV_USE_POLL
589	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
590	#endif	804	#endif
591	#if EV_USE_SELECT	805	#if EV_USE_SELECT
592	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
593	#endif	807	#endif
594		808
		809	ev_init (&sigev, sigcb);
		810	ev_set_priority (&sigev, EV_MAXPRI);
		811	}
		812	}
		813
		814	void
		815	loop_destroy (EV_P)
		816	{
		817	int i;
		818
		819	#if EV_USE_PORT
		820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		821	#endif
		822	#if EV_USE_KQUEUE
		823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		824	#endif
		825	#if EV_USE_EPOLL
		826	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		827	#endif
		828	#if EV_USE_POLL
		829	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		830	#endif
		831	#if EV_USE_SELECT
		832	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		833	#endif
		834
		835	for (i = NUMPRI; i--; )
		836	array_free (pending, [i]);
		837
		838	/* have to use the microsoft-never-gets-it-right macro */
		839	array_free (fdchange, EMPTY0);
		840	array_free (timer, EMPTY0);
		841	#if EV_PERIODICS
		842	array_free (periodic, EMPTY0);
		843	#endif
		844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
		847
		848	method = 0;
		849	}
		850
		851	static void
		852	loop_fork (EV_P)
		853	{
		854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
		860	#if EV_USE_EPOLL
		861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		862	#endif
		863
		864	if (ev_is_active (&sigev))
		865	{
		866	/* default loop */
		867
		868	ev_ref (EV_A);
		869	ev_io_stop (EV_A_ &sigev);
		870	close (sigpipe [0]);
		871	close (sigpipe [1]);
		872
		873	while (pipe (sigpipe))
		874	syserr ("(libev) error creating pipe");
		875
		876	siginit (EV_A);
		877	}
		878
		879	postfork = 0;
		880	}
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	ev_loop_new (unsigned int flags)
		885	{
		886	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		887
		888	memset (loop, 0, sizeof (struct ev_loop));
		889
		890	loop_init (EV_A_ flags);
		891
		892	if (ev_method (EV_A))
		893	return loop;
		894
		895	return 0;
		896	}
		897
		898	void
		899	ev_loop_destroy (EV_P)
		900	{
		901	loop_destroy (EV_A);
		902	ev_free (loop);
		903	}
		904
		905	void
		906	ev_loop_fork (EV_P)
		907	{
		908	postfork = 1;
		909	}
		910
		911	#endif
		912
		913	#if EV_MULTIPLICITY
		914	struct ev_loop *
		915	ev_default_loop_ (unsigned int flags)
		916	#else
		917	int
		918	ev_default_loop (unsigned int flags)
		919	#endif
		920	{
		921	if (sigpipe [0] == sigpipe [1])
		922	if (pipe (sigpipe))
		923	return 0;
		924
		925	if (!ev_default_loop_ptr)
		926	{
		927	#if EV_MULTIPLICITY
		928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		929	#else
		930	ev_default_loop_ptr = 1;
		931	#endif
		932
		933	loop_init (EV_A_ flags);
		934
595	if (ev_method)	935	if (ev_method (EV_A))
596	{	936	{
597	ev_watcher_init (&sigev, sigcb);
598	ev_set_priority (&sigev, EV_MAXPRI);
599	siginit ();	937	siginit (EV_A);
600		938
601	#ifndef WIN32	939	#ifndef _WIN32
602	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
603	ev_set_priority (&childev, EV_MAXPRI);	941	ev_set_priority (&childev, EV_MAXPRI);
604	ev_signal_start (&childev);	942	ev_signal_start (EV_A_ &childev);
		943	ev_unref (EV_A); /* child watcher should not keep loop alive */
605	#endif	944	#endif
606	}	945	}
		946	else
		947	ev_default_loop_ptr = 0;
607	}	948	}
608		949
609	return ev_method;	950	return ev_default_loop_ptr;
		951	}
		952
		953	void
		954	ev_default_destroy (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = ev_default_loop_ptr;
		958	#endif
		959
		960	#ifndef _WIN32
		961	ev_ref (EV_A); /* child watcher */
		962	ev_signal_stop (EV_A_ &childev);
		963	#endif
		964
		965	ev_ref (EV_A); /* signal watcher */
		966	ev_io_stop (EV_A_ &sigev);
		967
		968	close (sigpipe [0]); sigpipe [0] = 0;
		969	close (sigpipe [1]); sigpipe [1] = 0;
		970
		971	loop_destroy (EV_A);
		972	}
		973
		974	void
		975	ev_default_fork (void)
		976	{
		977	#if EV_MULTIPLICITY
		978	struct ev_loop *loop = ev_default_loop_ptr;
		979	#endif
		980
		981	if (method)
		982	postfork = 1;
610	}	983	}
611		984
612	/*****************************************************************************/	985	/*****************************************************************************/
613		986
614	void
615	ev_fork_prepare (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_parent (void)
622	{
623	/* nop */
624	}
625
626	void
627	ev_fork_child (void)
628	{
629	#if EV_USE_EPOLL
630	if (ev_method == EVMETHOD_EPOLL)
631	epoll_postfork_child ();
632	#endif
633
634	ev_io_stop (&sigev);
635	close (sigpipe [0]);
636	close (sigpipe [1]);
637	pipe (sigpipe);
638	siginit ();
639	}
640
641	/*****************************************************************************/
642
643	static void	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
644	call_pending (void)	1000	call_pending (EV_P)
645	{	1001	{
646	int pri;	1002	int pri;
647		1003
648	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
649	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
650	{	1006	{
651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
652		1008
653	if (p->w)	1009	if (expect_true (p->w))
654	{	1010	{
655	p->w->pending = 0;	1011	p->w->pending = 0;
656	p->w->cb (p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
657	}	1013	}
658	}	1014	}
659	}	1015	}
660		1016
661	static void	1017	inline void
662	timers_reify (void)	1018	timers_reify (EV_P)
663	{	1019	{
664	while (timercnt && timers [0]->at <= now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
665	{	1021	{
666	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
		1023
		1024	assert (("inactive timer on timer heap detected", ev_is_active (w)));
667		1025
668	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
669	if (w->repeat)	1027	if (w->repeat)
670	{	1028	{
671	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
672	w->at = now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
673	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
674	}	1036	}
675	else	1037	else
676	ev_timer_stop (w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
677		1039
678	event ((W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
679	}	1041	}
680	}	1042	}
681		1043
682	static void	1044	#if EV_PERIODICS
		1045	inline void
683	periodics_reify (void)	1046	periodics_reify (EV_P)
684	{	1047	{
685	while (periodiccnt && periodics [0]->at <= ev_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
686	{	1049	{
687	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
688		1051
		1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1053
689	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
690	if (w->interval)	1055	if (w->reschedule_cb)
691	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
692	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
693	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
694	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
695	}	1066	}
696	else	1067	else
697	ev_periodic_stop (w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
698		1069
699	event ((W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
700	}	1071	}
701	}	1072	}
702		1073
703	static void	1074	static void
704	periodics_reschedule (ev_tstamp diff)	1075	periodics_reschedule (EV_P)
705	{	1076	{
706	int i;	1077	int i;
707		1078
708	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
709	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
710	{	1081	{
711	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
712		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
713	if (w->interval)	1086	else if (w->interval)
714	{
715	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
716
717	if (fabs (diff) >= 1e-4)
718	{
719	ev_periodic_stop (w);
720	ev_periodic_start (w);
721
722	i = 0; /* restart loop, inefficient, but time jumps should be rare */
723	}
724	}
725	}	1088	}
726	}
727		1089
728	static int	1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
		1093	}
		1094	#endif
		1095
		1096	inline int
729	time_update_monotonic (void)	1097	time_update_monotonic (EV_P)
730	{	1098	{
731	now = get_clock ();	1099	mn_now = get_clock ();
732		1100
733	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
734	{	1102	{
735	ev_now = now + diff;	1103	ev_rt_now = rtmn_diff + mn_now;
736	return 0;	1104	return 0;
737	}	1105	}
738	else	1106	else
739	{	1107	{
740	now_floor = now;	1108	now_floor = mn_now;
741	ev_now = ev_time ();	1109	ev_rt_now = ev_time ();
742	return 1;	1110	return 1;
743	}	1111	}
744	}	1112	}
745		1113
746	static void	1114	inline void
747	time_update (void)	1115	time_update (EV_P)
748	{	1116	{
749	int i;	1117	int i;
750		1118
751	#if EV_USE_MONOTONIC	1119	#if EV_USE_MONOTONIC
752	if (expect_true (have_monotonic))	1120	if (expect_true (have_monotonic))
753	{	1121	{
754	if (time_update_monotonic ())	1122	if (time_update_monotonic (EV_A))
755	{	1123	{
756	ev_tstamp odiff = diff;	1124	ev_tstamp odiff = rtmn_diff;
757		1125
758	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
759	{	1127	{
760	diff = ev_now - now;	1128	rtmn_diff = ev_rt_now - mn_now;
761		1129
762	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
763	return; /* all is well */	1131	return; /* all is well */
764		1132
765	ev_now = ev_time ();	1133	ev_rt_now = ev_time ();
766	now = get_clock ();	1134	mn_now = get_clock ();
767	now_floor = now;	1135	now_floor = mn_now;
768	}	1136	}
769		1137
		1138	# if EV_PERIODICS
770	periodics_reschedule (diff - odiff);	1139	periodics_reschedule (EV_A);
		1140	# endif
771	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
		1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
772	}	1143	}
773	}	1144	}
774	else	1145	else
775	#endif	1146	#endif
776	{	1147	{
777	ev_now = ev_time ();	1148	ev_rt_now = ev_time ();
778		1149
779	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1150	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
780	{	1151	{
		1152	#if EV_PERIODICS
781	periodics_reschedule (ev_now - now);	1153	periodics_reschedule (EV_A);
		1154	#endif
782		1155
783	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
784	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
785	timers [i]->at += diff;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
786	}	1159	}
787		1160
788	now = ev_now;	1161	mn_now = ev_rt_now;
789	}	1162	}
790	}	1163	}
791		1164
792	int ev_loop_done;	1165	void
		1166	ev_ref (EV_P)
		1167	{
		1168	++activecnt;
		1169	}
793		1170
		1171	void
		1172	ev_unref (EV_P)
		1173	{
		1174	--activecnt;
		1175	}
		1176
		1177	static int loop_done;
		1178
		1179	void
794	void ev_loop (int flags)	1180	ev_loop (EV_P_ int flags)
795	{	1181	{
796	double block;	1182	double block;
797	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
798		1184
799	do	1185	while (activecnt)
800	{	1186	{
801	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
802	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
803	{	1189	{
804	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
805	call_pending ();	1191	call_pending (EV_A);
806	}	1192	}
807		1193
		1194	/* we might have forked, so reify kernel state if necessary */
		1195	if (expect_false (postfork))
		1196	loop_fork (EV_A);
		1197
808	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
809	fd_reify ();	1199	fd_reify (EV_A);
810		1200
811	/* calculate blocking time */	1201	/* calculate blocking time */
812		1202
813	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
814	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
815	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
816	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
817	time_update_monotonic ();	1207	time_update_monotonic (EV_A);
818	else	1208	else
819	#endif	1209	#endif
820	{	1210	{
821	ev_now = ev_time ();	1211	ev_rt_now = ev_time ();
822	now = ev_now;	1212	mn_now = ev_rt_now;
823	}	1213	}
824		1214
825	if (flags & EVLOOP_NONBLOCK || idlecnt)	1215	if (flags & EVLOOP_NONBLOCK || idlecnt)
826	block = 0.;	1216	block = 0.;
827	else	1217	else
828	{	1218	{
829	block = MAX_BLOCKTIME;	1219	block = MAX_BLOCKTIME;
830		1220
831	if (timercnt)	1221	if (timercnt)
832	{	1222	{
833	ev_tstamp to = timers [0]->at - now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
834	if (block > to) block = to;	1224	if (block > to) block = to;
835	}	1225	}
836		1226
		1227	#if EV_PERIODICS
837	if (periodiccnt)	1228	if (periodiccnt)
838	{	1229	{
839	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
840	if (block > to) block = to;	1231	if (block > to) block = to;
841	}	1232	}
		1233	#endif
842		1234
843	if (block < 0.) block = 0.;	1235	if (expect_false (block < 0.)) block = 0.;
844	}	1236	}
845		1237
846	method_poll (block);	1238	method_poll (EV_A_ block);
847		1239
848	/* update ev_now, do magic */	1240	/* update ev_rt_now, do magic */
849	time_update ();	1241	time_update (EV_A);
850		1242
851	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
852	timers_reify (); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
853	periodics_reify (); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
854		1248
855	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
856	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
857	queue_events ((W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
858		1252
859	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
860	if (checkcnt)	1254	if (expect_false (checkcnt))
861	queue_events ((W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
862		1256
863	call_pending ();	1257	call_pending (EV_A);
864	}
865	while (!ev_loop_done);
866		1258
		1259	if (expect_false (loop_done))
		1260	break;
		1261	}
		1262
867	if (ev_loop_done != 2)	1263	if (loop_done != 2)
868	ev_loop_done = 0;	1264	loop_done = 0;
		1265	}
		1266
		1267	void
		1268	ev_unloop (EV_P_ int how)
		1269	{
		1270	loop_done = how;
869	}	1271	}
870		1272
871	/*****************************************************************************/	1273	/*****************************************************************************/
872		1274
873	static void	1275	inline void
874	wlist_add (WL *head, WL elem)	1276	wlist_add (WL *head, WL elem)
875	{	1277	{
876	elem->next = *head;	1278	elem->next = *head;
877	*head = elem;	1279	*head = elem;
878	}	1280	}
879		1281
880	static void	1282	inline void
881	wlist_del (WL *head, WL elem)	1283	wlist_del (WL *head, WL elem)
882	{	1284	{
883	while (*head)	1285	while (*head)
884	{	1286	{
885	if (*head == elem)	1287	if (*head == elem)
…		…
890		1292
891	head = &(*head)->next;	1293	head = &(*head)->next;
892	}	1294	}
893	}	1295	}
894		1296
895	static void	1297	inline void
896	ev_clear_pending (W w)	1298	ev_clear_pending (EV_P_ W w)
897	{	1299	{
898	if (w->pending)	1300	if (w->pending)
899	{	1301	{
900	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1302	pendings [ABSPRI (w)][w->pending - 1].w = 0;
901	w->pending = 0;	1303	w->pending = 0;
902	}	1304	}
903	}	1305	}
904		1306
905	static void	1307	inline void
906	ev_start (W w, int active)	1308	ev_start (EV_P_ W w, int active)
907	{	1309	{
908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1310	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1311	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
910		1312
911	w->active = active;	1313	w->active = active;
		1314	ev_ref (EV_A);
912	}	1315	}
913		1316
914	static void	1317	inline void
915	ev_stop (W w)	1318	ev_stop (EV_P_ W w)
916	{	1319	{
		1320	ev_unref (EV_A);
917	w->active = 0;	1321	w->active = 0;
918	}	1322	}
919		1323
920	/*****************************************************************************/	1324	/*****************************************************************************/
921		1325
922	void	1326	void
923	ev_io_start (struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
924	{	1328	{
925	int fd = w->fd;	1329	int fd = w->fd;
926		1330
927	if (ev_is_active (w))	1331	if (expect_false (ev_is_active (w)))
928	return;	1332	return;
929		1333
930	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
931		1335
932	ev_start ((W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
934	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
935		1339
936	fd_change (fd);	1340	fd_change (EV_A_ fd);
937	}	1341	}
938		1342
939	void	1343	void
940	ev_io_stop (struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
941	{	1345	{
942	ev_clear_pending ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
943	if (!ev_is_active (w))	1347	if (expect_false (!ev_is_active (w)))
944	return;	1348	return;
		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
945		1351
946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
947	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
948		1354
949	fd_change (w->fd);	1355	fd_change (EV_A_ w->fd);
950	}	1356	}
951		1357
952	void	1358	void
953	ev_timer_start (struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
954	{	1360	{
955	if (ev_is_active (w))	1361	if (expect_false (ev_is_active (w)))
956	return;	1362	return;
957		1363
958	w->at += now;	1364	((WT)w)->at += mn_now;
959		1365
960	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
961		1367
962	ev_start ((W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
963	array_needsize (timers, timermax, timercnt, );	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
964	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
965	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
966	}
967		1372
		1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1374	}
		1375
968	void	1376	void
969	ev_timer_stop (struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
970	{	1378	{
971	ev_clear_pending ((W)w);	1379	ev_clear_pending (EV_A_ (W)w);
972	if (!ev_is_active (w))	1380	if (expect_false (!ev_is_active (w)))
973	return;	1381	return;
974		1382
		1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1384
975	if (w->active < timercnt--)	1385	if (expect_true (((W)w)->active < timercnt--))
976	{	1386	{
977	timers [w->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
978	downheap ((WT *)timers, timercnt, w->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
979	}	1389	}
980		1390
981	w->at = w->repeat;	1391	((WT)w)->at -= mn_now;
982		1392
983	ev_stop ((W)w);	1393	ev_stop (EV_A_ (W)w);
984	}	1394	}
985		1395
986	void	1396	void
987	ev_timer_again (struct ev_timer *w)	1397	ev_timer_again (EV_P_ struct ev_timer *w)
988	{	1398	{
989	if (ev_is_active (w))	1399	if (ev_is_active (w))
990	{	1400	{
991	if (w->repeat)	1401	if (w->repeat)
992	{	1402	{
993	w->at = now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
994	downheap ((WT *)timers, timercnt, w->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
995	}	1405	}
996	else	1406	else
997	ev_timer_stop (w);	1407	ev_timer_stop (EV_A_ w);
998	}	1408	}
999	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
1000	ev_timer_start (w);	1412	ev_timer_start (EV_A_ w);
		1413	}
1001	}	1414	}
1002		1415
		1416	#if EV_PERIODICS
1003	void	1417	void
1004	ev_periodic_start (struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
1005	{	1419	{
1006	if (ev_is_active (w))	1420	if (expect_false (ev_is_active (w)))
1007	return;	1421	return;
1008		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
1009	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1010
1011	/* this formula differs from the one in periodic_reify because we do not always round up */	1428	/* this formula differs from the one in periodic_reify because we do not always round up */
1012	if (w->interval)
1013	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
1014		1431
1015	ev_start ((W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
1016	array_needsize (periodics, periodicmax, periodiccnt, );	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1017	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
1018	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
1019	}
1020		1436
		1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1438	}
		1439
1021	void	1440	void
1022	ev_periodic_stop (struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1023	{	1442	{
1024	ev_clear_pending ((W)w);	1443	ev_clear_pending (EV_A_ (W)w);
1025	if (!ev_is_active (w))	1444	if (expect_false (!ev_is_active (w)))
1026	return;	1445	return;
1027		1446
		1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1448
1028	if (w->active < periodiccnt--)	1449	if (expect_true (((W)w)->active < periodiccnt--))
1029	{	1450	{
1030	periodics [w->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1031	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1032	}	1453	}
1033		1454
1034	ev_stop ((W)w);	1455	ev_stop (EV_A_ (W)w);
		1456	}
		1457
		1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
		1468	ev_idle_start (EV_P_ struct ev_idle *w)
		1469	{
		1470	if (expect_false (ev_is_active (w)))
		1471	return;
		1472
		1473	ev_start (EV_A_ (W)w, ++idlecnt);
		1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1475	idles [idlecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_idle_stop (EV_P_ struct ev_idle *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (expect_false (!ev_is_active (w)))
		1483	return;
		1484
		1485	idles [((W)w)->active - 1] = idles [--idlecnt];
		1486	ev_stop (EV_A_ (W)w);
		1487	}
		1488
		1489	void
		1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1491	{
		1492	if (expect_false (ev_is_active (w)))
		1493	return;
		1494
		1495	ev_start (EV_A_ (W)w, ++preparecnt);
		1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1497	prepares [preparecnt - 1] = w;
		1498	}
		1499
		1500	void
		1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1502	{
		1503	ev_clear_pending (EV_A_ (W)w);
		1504	if (expect_false (!ev_is_active (w)))
		1505	return;
		1506
		1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1508	ev_stop (EV_A_ (W)w);
		1509	}
		1510
		1511	void
		1512	ev_check_start (EV_P_ struct ev_check *w)
		1513	{
		1514	if (expect_false (ev_is_active (w)))
		1515	return;
		1516
		1517	ev_start (EV_A_ (W)w, ++checkcnt);
		1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1519	checks [checkcnt - 1] = w;
		1520	}
		1521
		1522	void
		1523	ev_check_stop (EV_P_ struct ev_check *w)
		1524	{
		1525	ev_clear_pending (EV_A_ (W)w);
		1526	if (expect_false (!ev_is_active (w)))
		1527	return;
		1528
		1529	checks [((W)w)->active - 1] = checks [--checkcnt];
		1530	ev_stop (EV_A_ (W)w);
1035	}	1531	}
1036		1532
1037	#ifndef SA_RESTART	1533	#ifndef SA_RESTART
1038	# define SA_RESTART 0	1534	# define SA_RESTART 0
1039	#endif	1535	#endif
1040		1536
1041	void	1537	void
1042	ev_signal_start (struct ev_signal *w)	1538	ev_signal_start (EV_P_ struct ev_signal *w)
1043	{	1539	{
		1540	#if EV_MULTIPLICITY
		1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1542	#endif
1044	if (ev_is_active (w))	1543	if (expect_false (ev_is_active (w)))
1045	return;	1544	return;
1046		1545
1047	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1048		1547
1049	ev_start ((W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1050	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1052		1551
1053	if (!w->next)	1552	if (!((WL)w)->next)
1054	{	1553	{
		1554	#if _WIN32
		1555	signal (w->signum, sighandler);
		1556	#else
1055	struct sigaction sa;	1557	struct sigaction sa;
1056	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1057	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1560	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1059	sigaction (w->signum, &sa, 0);	1561	sigaction (w->signum, &sa, 0);
		1562	#endif
1060	}	1563	}
1061	}	1564	}
1062		1565
1063	void	1566	void
1064	ev_signal_stop (struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
1065	{	1568	{
1066	ev_clear_pending ((W)w);	1569	ev_clear_pending (EV_A_ (W)w);
1067	if (!ev_is_active (w))	1570	if (expect_false (!ev_is_active (w)))
1068	return;	1571	return;
1069		1572
1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1071	ev_stop ((W)w);	1574	ev_stop (EV_A_ (W)w);
1072		1575
1073	if (!signals [w->signum - 1].head)	1576	if (!signals [w->signum - 1].head)
1074	signal (w->signum, SIG_DFL);	1577	signal (w->signum, SIG_DFL);
1075	}	1578	}
1076		1579
1077	void	1580	void
1078	ev_idle_start (struct ev_idle *w)
1079	{
1080	if (ev_is_active (w))
1081	return;
1082
1083	ev_start ((W)w, ++idlecnt);
1084	array_needsize (idles, idlemax, idlecnt, );
1085	idles [idlecnt - 1] = w;
1086	}
1087
1088	void
1089	ev_idle_stop (struct ev_idle *w)
1090	{
1091	ev_clear_pending ((W)w);
1092	if (ev_is_active (w))
1093	return;
1094
1095	idles [w->active - 1] = idles [--idlecnt];
1096	ev_stop ((W)w);
1097	}
1098
1099	void
1100	ev_prepare_start (struct ev_prepare *w)
1101	{
1102	if (ev_is_active (w))
1103	return;
1104
1105	ev_start ((W)w, ++preparecnt);
1106	array_needsize (prepares, preparemax, preparecnt, );
1107	prepares [preparecnt - 1] = w;
1108	}
1109
1110	void
1111	ev_prepare_stop (struct ev_prepare *w)
1112	{
1113	ev_clear_pending ((W)w);
1114	if (ev_is_active (w))
1115	return;
1116
1117	prepares [w->active - 1] = prepares [--preparecnt];
1118	ev_stop ((W)w);
1119	}
1120
1121	void
1122	ev_check_start (struct ev_check *w)
1123	{
1124	if (ev_is_active (w))
1125	return;
1126
1127	ev_start ((W)w, ++checkcnt);
1128	array_needsize (checks, checkmax, checkcnt, );
1129	checks [checkcnt - 1] = w;
1130	}
1131
1132	void
1133	ev_check_stop (struct ev_check *w)
1134	{
1135	ev_clear_pending ((W)w);
1136	if (ev_is_active (w))
1137	return;
1138
1139	checks [w->active - 1] = checks [--checkcnt];
1140	ev_stop ((W)w);
1141	}
1142
1143	void
1144	ev_child_start (struct ev_child *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1145	{	1582	{
		1583	#if EV_MULTIPLICITY
		1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1585	#endif
1146	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1147	return;	1587	return;
1148		1588
1149	ev_start ((W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1150	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1151	}	1591	}
1152		1592
1153	void	1593	void
1154	ev_child_stop (struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1155	{	1595	{
1156	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1157	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1158	return;	1598	return;
1159		1599
1160	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1161	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
1162	}	1602	}
1163		1603
1164	/*****************************************************************************/	1604	/*****************************************************************************/
1165		1605
1166	struct ev_once	1606	struct ev_once
…		…
1170	void (*cb)(int revents, void *arg);	1610	void (*cb)(int revents, void *arg);
1171	void *arg;	1611	void *arg;
1172	};	1612	};
1173		1613
1174	static void	1614	static void
1175	once_cb (struct ev_once *once, int revents)	1615	once_cb (EV_P_ struct ev_once *once, int revents)
1176	{	1616	{
1177	void (*cb)(int revents, void *arg) = once->cb;	1617	void (*cb)(int revents, void *arg) = once->cb;
1178	void *arg = once->arg;	1618	void *arg = once->arg;
1179		1619
1180	ev_io_stop (&once->io);	1620	ev_io_stop (EV_A_ &once->io);
1181	ev_timer_stop (&once->to);	1621	ev_timer_stop (EV_A_ &once->to);
1182	free (once);	1622	ev_free (once);
1183		1623
1184	cb (revents, arg);	1624	cb (revents, arg);
1185	}	1625	}
1186		1626
1187	static void	1627	static void
1188	once_cb_io (struct ev_io *w, int revents)	1628	once_cb_io (EV_P_ struct ev_io *w, int revents)
1189	{	1629	{
1190	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1630	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1191	}	1631	}
1192		1632
1193	static void	1633	static void
1194	once_cb_to (struct ev_timer *w, int revents)	1634	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1195	{	1635	{
1196	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1636	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1197	}	1637	}
1198		1638
1199	void	1639	void
1200	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1201	{	1641	{
1202	struct ev_once *once = malloc (sizeof (struct ev_once));	1642	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1203		1643
1204	if (!once)	1644	if (expect_false (!once))
		1645	{
1205	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1646	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1206	else	1647	return;
1207	{	1648	}
		1649
1208	once->cb = cb;	1650	once->cb = cb;
1209	once->arg = arg;	1651	once->arg = arg;
1210		1652
1211	ev_watcher_init (&once->io, once_cb_io);	1653	ev_init (&once->io, once_cb_io);
1212	if (fd >= 0)	1654	if (fd >= 0)
1213	{	1655	{
1214	ev_io_set (&once->io, fd, events);	1656	ev_io_set (&once->io, fd, events);
1215	ev_io_start (&once->io);	1657	ev_io_start (EV_A_ &once->io);
1216	}	1658	}
1217		1659
1218	ev_watcher_init (&once->to, once_cb_to);	1660	ev_init (&once->to, once_cb_to);
1219	if (timeout >= 0.)	1661	if (timeout >= 0.)
1220	{	1662	{
1221	ev_timer_set (&once->to, timeout, 0.);	1663	ev_timer_set (&once->to, timeout, 0.);
1222	ev_timer_start (&once->to);	1664	ev_timer_start (EV_A_ &once->to);
1223	}
1224	}
1225	}
1226
1227	/*****************************************************************************/
1228
1229	#if 0
1230
1231	struct ev_io wio;
1232
1233	static void
1234	sin_cb (struct ev_io *w, int revents)
1235	{
1236	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1237	}
1238
1239	static void
1240	ocb (struct ev_timer *w, int revents)
1241	{
1242	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1243	ev_timer_stop (w);
1244	ev_timer_start (w);
1245	}
1246
1247	static void
1248	scb (struct ev_signal *w, int revents)
1249	{
1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1251	ev_io_stop (&wio);
1252	ev_io_start (&wio);
1253	}
1254
1255	static void
1256	gcb (struct ev_signal *w, int revents)
1257	{
1258	fprintf (stderr, "generic %x\n", revents);
1259
1260	}
1261
1262	int main (void)
1263	{
1264	ev_init (0);
1265
1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
1267	ev_io_start (&wio);
1268
1269	struct ev_timer t[10000];
1270
1271	#if 0
1272	int i;
1273	for (i = 0; i < 10000; ++i)
1274	{	1665	}
1275	struct ev_timer *w = t + i;
1276	ev_watcher_init (w, ocb, i);
1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1278	ev_timer_start (w);
1279	if (drand48 () < 0.5)
1280	ev_timer_stop (w);
1281	}
1282	#endif
1283
1284	struct ev_timer t1;
1285	ev_timer_init (&t1, ocb, 5, 10);
1286	ev_timer_start (&t1);
1287
1288	struct ev_signal sig;
1289	ev_signal_init (&sig, scb, SIGQUIT);
1290	ev_signal_start (&sig);
1291
1292	struct ev_check cw;
1293	ev_check_init (&cw, gcb);
1294	ev_check_start (&cw);
1295
1296	struct ev_idle iw;
1297	ev_idle_init (&iw, gcb);
1298	ev_idle_start (&iw);
1299
1300	ev_loop (0);
1301
1302	return 0;
1303	}	1666	}
1304		1667
		1668	#ifdef __cplusplus
		1669	}
1305	#endif	1670	#endif
1306		1671
1307
1308
1309

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