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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 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	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		56	# define EV_USE_SELECT 1
		57	# else
		58	# define EV_USE_SELECT 0
		59	# endif
		60
		61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		62	# define EV_USE_POLL 1
		63	# else
		64	# define EV_USE_POLL 0
		65	# endif
		66
		67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		68	# define EV_USE_EPOLL 1
		69	# else
		70	# define EV_USE_EPOLL 0
		71	# endif
		72
		73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		74	# define EV_USE_KQUEUE 1
		75	# else
		76	# define EV_USE_KQUEUE 0
		77	# endif
		78
		79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		80	# define EV_USE_PORT 1
		81	# else
		82	# define EV_USE_PORT 0
		83	# endif
		84
33	#endif	85	#endif
34		86
35	#include <math.h>	87	#include <math.h>
36	#include <stdlib.h>	88	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	89	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	90	#include <stddef.h>
41		91
42	#include <stdio.h>	92	#include <stdio.h>
43		93
44	#include <assert.h>	94	#include <assert.h>
45	#include <errno.h>	95	#include <errno.h>
46	#include <sys/types.h>	96	#include <sys/types.h>
		97	#include <time.h>
		98
		99	#include <signal.h>
		100
47	#ifndef WIN32	101	#ifndef _WIN32
		102	# include <unistd.h>
		103	# include <sys/time.h>
48	# include <sys/wait.h>	104	# include <sys/wait.h>
		105	#else
		106	# define WIN32_LEAN_AND_MEAN
		107	# include <windows.h>
		108	# ifndef EV_SELECT_IS_WINSOCKET
		109	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	110	# endif
50	#include <sys/time.h>	111	#endif
51	#include <time.h>
52		112
53	/**/	113	/**/
54		114
55	#ifndef EV_USE_MONOTONIC	115	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 0
57	#endif	121	#endif
58		122
59	#ifndef EV_USE_SELECT	123	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	124	# define EV_USE_SELECT 1
61	#endif	125	#endif
62		126
63	#ifndef EV_USE_POLL	127	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	128	# ifdef _WIN32
		129	# define EV_USE_POLL 0
		130	# else
		131	# define EV_USE_POLL 1
		132	# endif
65	#endif	133	#endif
66		134
67	#ifndef EV_USE_EPOLL	135	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	136	# define EV_USE_EPOLL 0
69	#endif	137	#endif
70		138
71	#ifndef EV_USE_KQUEUE	139	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	140	# define EV_USE_KQUEUE 0
73	#endif	141	#endif
74		142
75	#ifndef EV_USE_REALTIME	143	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	144	# define EV_USE_PORT 0
77	#endif	145	#endif
78		146
79	/**/	147	/**/
		148
		149	/* darwin simply cannot be helped */
		150	#ifdef __APPLE__
		151	# undef EV_USE_POLL
		152	# undef EV_USE_KQUEUE
		153	#endif
80		154
81	#ifndef CLOCK_MONOTONIC	155	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	156	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	157	# define EV_USE_MONOTONIC 0
84	#endif	158	#endif
…		…
86	#ifndef CLOCK_REALTIME	160	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	161	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	162	# define EV_USE_REALTIME 0
89	#endif	163	#endif
90		164
		165	#if EV_SELECT_IS_WINSOCKET
		166	# include <winsock.h>
		167	#endif
		168
91	/**/	169	/**/
92		170
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	171	#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) */	172	#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 */	173	#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 */	174	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		175
		176	#ifdef EV_H
		177	# include EV_H
		178	#else
98	#include "ev.h"	179	# include "ev.h"
		180	#endif
99		181
100	#if __GNUC__ >= 3	182	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	183	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	184	# define inline static inline
103	#else	185	#else
104	# define expect(expr,value) (expr)	186	# define expect(expr,value) (expr)
105	# define inline static	187	# define inline static
106	#endif	188	#endif
107		189
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	191	#define expect_true(expr) expect ((expr) != 0, 1)
110		192
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		195
		196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		197	#define EMPTY2(a,b) /* used to suppress some warnings */
		198
114	typedef struct ev_watcher *W;	199	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	200	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	201	typedef struct ev_watcher_time *WT;
117		202
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		204
		205	#ifdef _WIN32
		206	# include "ev_win32.c"
		207	#endif
		208
		209	/*****************************************************************************/
		210
		211	static void (*syserr_cb)(const char *msg);
		212
		213	void ev_set_syserr_cb (void (*cb)(const char *msg))
		214	{
		215	syserr_cb = cb;
		216	}
		217
		218	static void
		219	syserr (const char *msg)
		220	{
		221	if (!msg)
		222	msg = "(libev) system error";
		223
		224	if (syserr_cb)
		225	syserr_cb (msg);
		226	else
		227	{
		228	perror (msg);
		229	abort ();
		230	}
		231	}
		232
		233	static void *(*alloc)(void *ptr, long size);
		234
		235	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		236	{
		237	alloc = cb;
		238	}
		239
		240	static void *
		241	ev_realloc (void *ptr, long size)
		242	{
		243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		244
		245	if (!ptr && size)
		246	{
		247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		248	abort ();
		249	}
		250
		251	return ptr;
		252	}
		253
		254	#define ev_malloc(size) ev_realloc (0, (size))
		255	#define ev_free(ptr) ev_realloc ((ptr), 0)
		256
		257	/*****************************************************************************/
		258
		259	typedef struct
		260	{
		261	WL head;
		262	unsigned char events;
		263	unsigned char reify;
		264	#if EV_SELECT_IS_WINSOCKET
		265	SOCKET handle;
		266	#endif
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	ev_tstamp ev_rt_now;
		280	#define ev_rt_now ((loop)->ev_rt_now)
		281	#define VAR(name,decl) decl;
		282	#include "ev_vars.h"
		283	#undef VAR
		284	};
		285	#include "ev_wrap.h"
		286
		287	static struct ev_loop default_loop_struct;
		288	struct ev_loop *ev_default_loop_ptr;
		289
		290	#else
		291
119	ev_tstamp ev_now;	292	ev_tstamp ev_rt_now;
120	int ev_method;	293	#define VAR(name,decl) static decl;
		294	#include "ev_vars.h"
		295	#undef VAR
121		296
122	static int have_monotonic; /* runtime */	297	static int ev_default_loop_ptr;
123		298
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	299	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		300
128	/*****************************************************************************/	301	/*****************************************************************************/
129		302
130	ev_tstamp	303	ev_tstamp
131	ev_time (void)	304	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	312	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	313	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	314	#endif
142	}	315	}
143		316
144	static ev_tstamp	317	inline ev_tstamp
145	get_clock (void)	318	get_clock (void)
146	{	319	{
147	#if EV_USE_MONOTONIC	320	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	321	if (expect_true (have_monotonic))
149	{	322	{
…		…
154	#endif	327	#endif
155		328
156	return ev_time ();	329	return ev_time ();
157	}	330	}
158		331
		332	#if EV_MULTIPLICITY
		333	ev_tstamp
		334	ev_now (EV_P)
		335	{
		336	return ev_rt_now;
		337	}
		338	#endif
		339
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	340	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		341
161	#define array_needsize(base,cur,cnt,init) \	342	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	343	if (expect_false ((cnt) > cur)) \
163	{ \	344	{ \
164	int newcnt = cur; \	345	int newcnt = cur; \
165	do \	346	do \
166	{ \	347	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	348	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	349	} \
169	while ((cnt) > newcnt); \	350	while ((cnt) > newcnt); \
170	\	351	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	352	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	353	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	354	cur = newcnt; \
174	}	355	}
		356
		357	#define array_slim(type,stem) \
		358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		359	{ \
		360	stem ## max = array_roundsize (stem ## cnt >> 1); \
		361	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		363	}
		364
		365	#define array_free(stem, idx) \
		366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		367
176	/*****************************************************************************/	368	/*****************************************************************************/
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		369
188	static void	370	static void
189	anfds_init (ANFD *base, int count)	371	anfds_init (ANFD *base, int count)
190	{	372	{
191	while (count--)	373	while (count--)
…		…
196		378
197	++base;	379	++base;
198	}	380	}
199	}	381	}
200		382
201	typedef struct	383	void
		384	ev_feed_event (EV_P_ void *w, int revents)
202	{	385	{
203	W w;	386	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		387
207	static ANPENDING *pendings [NUMPRI];	388	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	{	389	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	390	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216	return;	391	return;
217	}	392	}
218		393
219	w->pending = ++pendingcnt [ABSPRI (w)];	394	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	398	}
224		399
225	static void	400	static void
226	queue_events (W *events, int eventcnt, int type)	401	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	402	{
228	int i;	403	int i;
229		404
230	for (i = 0; i < eventcnt; ++i)	405	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	406	ev_feed_event (EV_A_ events [i], type);
232	}	407	}
233		408
234	static void	409	inline void
235	fd_event (int fd, int events)	410	fd_event (EV_P_ int fd, int revents)
236	{	411	{
237	ANFD *anfd = anfds + fd;	412	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	413	struct ev_io *w;
239		414
240	for (w = anfd->head; w; w = w->next)	415	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	416	{
242	int ev = w->events & events;	417	int ev = w->events & revents;
243		418
244	if (ev)	419	if (ev)
245	event ((W)w, ev);	420	ev_feed_event (EV_A_ (W)w, ev);
246	}	421	}
		422	}
		423
		424	void
		425	ev_feed_fd_event (EV_P_ int fd, int revents)
		426	{
		427	fd_event (EV_A_ fd, revents);
247	}	428	}
248		429
249	/*****************************************************************************/	430	/*****************************************************************************/
250		431
251	static int *fdchanges;	432	inline void
252	static int fdchangemax, fdchangecnt;	433	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	434	{
257	int i;	435	int i;
258		436
259	for (i = 0; i < fdchangecnt; ++i)	437	for (i = 0; i < fdchangecnt; ++i)
260	{	438	{
…		…
262	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	441	struct ev_io *w;
264		442
265	int events = 0;	443	int events = 0;
266		444
267	for (w = anfd->head; w; w = w->next)	445	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	446	events |= w->events;
269		447
		448	#if EV_SELECT_IS_WINSOCKET
		449	if (events)
		450	{
		451	unsigned long argp;
		452	anfd->handle = _get_osfhandle (fd);
		453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		454	}
		455	#endif
		456
270	anfd->reify = 0;	457	anfd->reify = 0;
271		458
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	459	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	460	anfd->events = events;
276	}
277	}	461	}
278		462
279	fdchangecnt = 0;	463	fdchangecnt = 0;
280	}	464	}
281		465
282	static void	466	static void
283	fd_change (int fd)	467	fd_change (EV_P_ int fd)
284	{	468	{
285	if (anfds [fd].reify || fdchangecnt < 0)	469	if (expect_false (anfds [fd].reify))
286	return;	470	return;
287		471
288	anfds [fd].reify = 1;	472	anfds [fd].reify = 1;
289		473
290	++fdchangecnt;	474	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	476	fdchanges [fdchangecnt - 1] = fd;
293	}	477	}
294		478
295	static void	479	static void
296	fd_kill (int fd)	480	fd_kill (EV_P_ int fd)
297	{	481	{
298	struct ev_io *w;	482	struct ev_io *w;
299		483
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	484	while ((w = (struct ev_io *)anfds [fd].head))
302	{	485	{
303	ev_io_stop (w);	486	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	487	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	488	}
		489	}
		490
		491	inline int
		492	fd_valid (int fd)
		493	{
		494	#ifdef _WIN32
		495	return _get_osfhandle (fd) != -1;
		496	#else
		497	return fcntl (fd, F_GETFD) != -1;
		498	#endif
306	}	499	}
307		500
308	/* called on EBADF to verify fds */	501	/* called on EBADF to verify fds */
309	static void	502	static void
310	fd_ebadf (void)	503	fd_ebadf (EV_P)
311	{	504	{
312	int fd;	505	int fd;
313		506
314	for (fd = 0; fd < anfdmax; ++fd)	507	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	508	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	509	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	510	fd_kill (EV_A_ fd);
318	}	511	}
319		512
320	/* called on ENOMEM in select/poll to kill some fds and retry */	513	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	514	static void
322	fd_enomem (void)	515	fd_enomem (EV_P)
323	{	516	{
324	int fd = anfdmax;	517	int fd;
325		518
326	while (fd--)	519	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	520	if (anfds [fd].events)
328	{	521	{
329	close (fd);
330	fd_kill (fd);	522	fd_kill (EV_A_ fd);
331	return;	523	return;
332	}	524	}
333	}	525	}
334		526
		527	/* usually called after fork if method needs to re-arm all fds from scratch */
		528	static void
		529	fd_rearm_all (EV_P)
		530	{
		531	int fd;
		532
		533	/* this should be highly optimised to not do anything but set a flag */
		534	for (fd = 0; fd < anfdmax; ++fd)
		535	if (anfds [fd].events)
		536	{
		537	anfds [fd].events = 0;
		538	fd_change (EV_A_ fd);
		539	}
		540	}
		541
335	/*****************************************************************************/	542	/*****************************************************************************/
336		543
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	544	static void
344	upheap (WT *timers, int k)	545	upheap (WT *heap, int k)
345	{	546	{
346	WT w = timers [k];	547	WT w = heap [k];
347		548
348	while (k && timers [k >> 1]->at > w->at)	549	while (k && heap [k >> 1]->at > w->at)
349	{	550	{
350	timers [k] = timers [k >> 1];	551	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
352	k >>= 1;	553	k >>= 1;
353	}	554	}
354		555
355	timers [k] = w;	556	heap [k] = w;
356	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
357		558
358	}	559	}
359		560
360	static void	561	static void
361	downheap (WT *timers, int N, int k)	562	downheap (WT *heap, int N, int k)
362	{	563	{
363	WT w = timers [k];	564	WT w = heap [k];
364		565
365	while (k < (N >> 1))	566	while (k < (N >> 1))
366	{	567	{
367	int j = k << 1;	568	int j = k << 1;
368		569
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	571	++j;
371		572
372	if (w->at <= timers [j]->at)	573	if (w->at <= heap [j]->at)
373	break;	574	break;
374		575
375	timers [k] = timers [j];	576	heap [k] = heap [j];
376	timers [k]->active = k + 1;	577	((W)heap [k])->active = k + 1;
377	k = j;	578	k = j;
378	}	579	}
379		580
380	timers [k] = w;	581	heap [k] = w;
381	timers [k]->active = k + 1;	582	((W)heap [k])->active = k + 1;
		583	}
		584
		585	inline void
		586	adjustheap (WT *heap, int N, int k)
		587	{
		588	upheap (heap, k);
		589	downheap (heap, N, k);
382	}	590	}
383		591
384	/*****************************************************************************/	592	/*****************************************************************************/
385		593
386	typedef struct	594	typedef struct
387	{	595	{
388	struct ev_signal *head;	596	WL head;
389	sig_atomic_t volatile gotsig;	597	sig_atomic_t volatile gotsig;
390	} ANSIG;	598	} ANSIG;
391		599
392	static ANSIG *signals;	600	static ANSIG *signals;
393	static int signalmax;	601	static int signalmax;
…		…
409	}	617	}
410		618
411	static void	619	static void
412	sighandler (int signum)	620	sighandler (int signum)
413	{	621	{
		622	#if _WIN32
		623	signal (signum, sighandler);
		624	#endif
		625
414	signals [signum - 1].gotsig = 1;	626	signals [signum - 1].gotsig = 1;
415		627
416	if (!gotsig)	628	if (!gotsig)
417	{	629	{
418	int old_errno = errno;	630	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	633	errno = old_errno;
422	}	634	}
423	}	635	}
424		636
		637	void
		638	ev_feed_signal_event (EV_P_ int signum)
		639	{
		640	WL w;
		641
		642	#if EV_MULTIPLICITY
		643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		644	#endif
		645
		646	--signum;
		647
		648	if (signum < 0 || signum >= signalmax)
		649	return;
		650
		651	signals [signum].gotsig = 0;
		652
		653	for (w = signals [signum].head; w; w = w->next)
		654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		655	}
		656
425	static void	657	static void
426	sigcb (struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	659	{
428	struct ev_signal *w;
429	int signum;	660	int signum;
430		661
431	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	663	gotsig = 0;
433		664
434	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
436	{	667	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	}	668	}
443		669
444	static void	670	static void
445	siginit (void)	671	fd_intern (int fd)
446	{	672	{
447	#ifndef WIN32	673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	677	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);	678	fcntl (fd, F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	679	#endif
		680	}
		681
		682	static void
		683	siginit (EV_P)
		684	{
		685	fd_intern (sigpipe [0]);
		686	fd_intern (sigpipe [1]);
455		687
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
		690	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	691	}
459		692
460	/*****************************************************************************/	693	/*****************************************************************************/
461		694
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];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
474	static struct ev_signal childev;	699	static struct ev_signal childev;
475
476	#ifndef WIN32
477		700
478	#ifndef WCONTINUED	701	#ifndef WCONTINUED
479	# define WCONTINUED 0	702	# define WCONTINUED 0
480	#endif	703	#endif
481		704
482	static void	705	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	706	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	707	{
485	struct ev_child *w;	708	struct ev_child *w;
486		709
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	710	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)	711	if (w->pid == pid || !w->pid)
489	{	712	{
490	w->priority = sw->priority; /* need to do it *now* */	713	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	714	w->rpid = pid;
492	w->rstatus = status;	715	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
495	}	717	}
496	}	718	}
497		719
498	static void	720	static void
499	childcb (struct ev_signal *sw, int revents)	721	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	722	{
501	int pid, status;	723	int pid, status;
502		724
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	725	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	726	{
506	/* make sure we are called again until all childs have been reaped */	727	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		729
509	child_reap (sw, pid, pid, status);	730	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 */	731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	732	}
512	}	733	}
513		734
514	#endif	735	#endif
515		736
516	/*****************************************************************************/	737	/*****************************************************************************/
517		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
518	#if EV_USE_KQUEUE	742	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	743	# include "ev_kqueue.c"
520	#endif	744	#endif
521	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	746	# include "ev_epoll.c"
…		…
538	ev_version_minor (void)	762	ev_version_minor (void)
539	{	763	{
540	return EV_VERSION_MINOR;	764	return EV_VERSION_MINOR;
541	}	765	}
542		766
543	/* return true if we are running with elevated privileges and ignore env variables */	767	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	768	static int
545	enable_secure ()	769	enable_secure (void)
546	{	770	{
		771	#ifdef _WIN32
		772	return 0;
		773	#else
547	return getuid () != geteuid ()	774	return getuid () != geteuid ()
548	|| getgid () != getegid ();	775	|| getgid () != getegid ();
		776	#endif
549	}	777	}
550		778
551	int ev_init (int methods)	779	unsigned int
		780	ev_method (EV_P)
552	{	781	{
		782	return method;
		783	}
		784
		785	static void
		786	loop_init (EV_P_ unsigned int flags)
		787	{
553	if (!ev_method)	788	if (!method)
554	{	789	{
555	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
556	{	791	{
557	struct timespec ts;	792	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	794	have_monotonic = 1;
560	}	795	}
561	#endif	796	#endif
562		797
563	ev_now = ev_time ();	798	ev_rt_now = ev_time ();
564	now = get_clock ();	799	mn_now = get_clock ();
565	now_floor = now;	800	now_floor = mn_now;
566	diff = ev_now - now;	801	rtmn_diff = ev_rt_now - mn_now;
567		802
568	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
569	return 0;
570
571	if (methods == EVMETHOD_AUTO)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	804	flags = atoi (getenv ("LIBEV_FLAGS"));
574	else
575	methods = EVMETHOD_ANY;
576		805
		806	if (!(flags & 0x0000ffff))
		807	flags |= 0x0000ffff;
		808
577	ev_method = 0;	809	method = 0;
		810	#if EV_USE_PORT
		811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		812	#endif
578	#if EV_USE_KQUEUE	813	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
580	#endif	815	#endif
581	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
583	#endif	818	#endif
584	#if EV_USE_POLL	819	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
586	#endif	821	#endif
587	#if EV_USE_SELECT	822	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
589	#endif	824	#endif
590		825
		826	ev_init (&sigev, sigcb);
		827	ev_set_priority (&sigev, EV_MAXPRI);
		828	}
		829	}
		830
		831	static void
		832	loop_destroy (EV_P)
		833	{
		834	int i;
		835
		836	#if EV_USE_PORT
		837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		838	#endif
		839	#if EV_USE_KQUEUE
		840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		841	#endif
		842	#if EV_USE_EPOLL
		843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		844	#endif
		845	#if EV_USE_POLL
		846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		847	#endif
		848	#if EV_USE_SELECT
		849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		850	#endif
		851
		852	for (i = NUMPRI; i--; )
		853	array_free (pending, [i]);
		854
		855	/* have to use the microsoft-never-gets-it-right macro */
		856	array_free (fdchange, EMPTY0);
		857	array_free (timer, EMPTY0);
		858	#if EV_PERIODICS
		859	array_free (periodic, EMPTY0);
		860	#endif
		861	array_free (idle, EMPTY0);
		862	array_free (prepare, EMPTY0);
		863	array_free (check, EMPTY0);
		864
		865	method = 0;
		866	}
		867
		868	static void
		869	loop_fork (EV_P)
		870	{
		871	#if EV_USE_PORT
		872	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		873	#endif
		874	#if EV_USE_KQUEUE
		875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		876	#endif
		877	#if EV_USE_EPOLL
		878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		879	#endif
		880
		881	if (ev_is_active (&sigev))
		882	{
		883	/* default loop */
		884
		885	ev_ref (EV_A);
		886	ev_io_stop (EV_A_ &sigev);
		887	close (sigpipe [0]);
		888	close (sigpipe [1]);
		889
		890	while (pipe (sigpipe))
		891	syserr ("(libev) error creating pipe");
		892
		893	siginit (EV_A);
		894	}
		895
		896	postfork = 0;
		897	}
		898
		899	#if EV_MULTIPLICITY
		900	struct ev_loop *
		901	ev_loop_new (unsigned int flags)
		902	{
		903	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		904
		905	memset (loop, 0, sizeof (struct ev_loop));
		906
		907	loop_init (EV_A_ flags);
		908
		909	if (ev_method (EV_A))
		910	return loop;
		911
		912	return 0;
		913	}
		914
		915	void
		916	ev_loop_destroy (EV_P)
		917	{
		918	loop_destroy (EV_A);
		919	ev_free (loop);
		920	}
		921
		922	void
		923	ev_loop_fork (EV_P)
		924	{
		925	postfork = 1;
		926	}
		927
		928	#endif
		929
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *
		932	ev_default_loop_init (unsigned int flags)
		933	#else
		934	int
		935	ev_default_loop (unsigned int flags)
		936	#endif
		937	{
		938	if (sigpipe [0] == sigpipe [1])
		939	if (pipe (sigpipe))
		940	return 0;
		941
		942	if (!ev_default_loop_ptr)
		943	{
		944	#if EV_MULTIPLICITY
		945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		946	#else
		947	ev_default_loop_ptr = 1;
		948	#endif
		949
		950	loop_init (EV_A_ flags);
		951
591	if (ev_method)	952	if (ev_method (EV_A))
592	{	953	{
593	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	954	siginit (EV_A);
596		955
597	#ifndef WIN32	956	#ifndef _WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	958	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	959	ev_signal_start (EV_A_ &childev);
		960	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	961	#endif
602	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
603	}	965	}
604		966
605	return ev_method;	967	return ev_default_loop_ptr;
		968	}
		969
		970	void
		971	ev_default_destroy (void)
		972	{
		973	#if EV_MULTIPLICITY
		974	struct ev_loop *loop = ev_default_loop_ptr;
		975	#endif
		976
		977	#ifndef _WIN32
		978	ev_ref (EV_A); /* child watcher */
		979	ev_signal_stop (EV_A_ &childev);
		980	#endif
		981
		982	ev_ref (EV_A); /* signal watcher */
		983	ev_io_stop (EV_A_ &sigev);
		984
		985	close (sigpipe [0]); sigpipe [0] = 0;
		986	close (sigpipe [1]); sigpipe [1] = 0;
		987
		988	loop_destroy (EV_A);
		989	}
		990
		991	void
		992	ev_default_fork (void)
		993	{
		994	#if EV_MULTIPLICITY
		995	struct ev_loop *loop = ev_default_loop_ptr;
		996	#endif
		997
		998	if (method)
		999	postfork = 1;
606	}	1000	}
607		1001
608	/*****************************************************************************/	1002	/*****************************************************************************/
609		1003
610	void
611	ev_fork_prepare (void)
612	{
613	/* nop */
614	}
615
616	void
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif
629
630	ev_io_stop (&sigev);
631	close (sigpipe [0]);
632	close (sigpipe [1]);
633	pipe (sigpipe);
634	siginit ();
635	}
636
637	/*****************************************************************************/
638
639	static void	1004	static int
		1005	any_pending (EV_P)
		1006	{
		1007	int pri;
		1008
		1009	for (pri = NUMPRI; pri--; )
		1010	if (pendingcnt [pri])
		1011	return 1;
		1012
		1013	return 0;
		1014	}
		1015
		1016	inline void
640	call_pending (void)	1017	call_pending (EV_P)
641	{	1018	{
642	int pri;	1019	int pri;
643		1020
644	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
646	{	1023	{
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		1025
649	if (p->w)	1026	if (expect_true (p->w))
650	{	1027	{
651	p->w->pending = 0;	1028	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
653	}	1030	}
654	}	1031	}
655	}	1032	}
656		1033
657	static void	1034	inline void
658	timers_reify (void)	1035	timers_reify (EV_P)
659	{	1036	{
660	while (timercnt && timers [0]->at <= now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	1038	{
662	struct ev_timer *w = timers [0];	1039	struct ev_timer *w = timers [0];
		1040
		1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));
663		1042
664	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
665	if (w->repeat)	1044	if (w->repeat)
666	{	1045	{
667	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1047
668	w->at = now + w->repeat;	1048	((WT)w)->at += w->repeat;
		1049	if (((WT)w)->at < mn_now)
		1050	((WT)w)->at = mn_now;
		1051
669	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
670	}	1053	}
671	else	1054	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1056
674	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
675	}	1058	}
676	}	1059	}
677		1060
678	static void	1061	#if EV_PERIODICS
		1062	inline void
679	periodics_reify (void)	1063	periodics_reify (EV_P)
680	{	1064	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
682	{	1066	{
683	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
684		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
685	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
686	if (w->interval)	1072	if (w->reschedule_cb)
687	{	1073	{
		1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1076	downheap ((WT *)periodics, periodiccnt, 0);
		1077	}
		1078	else if (w->interval)
		1079	{
688	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
689	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
690	downheap ((WT *)periodics, periodiccnt, 0);	1082	downheap ((WT *)periodics, periodiccnt, 0);
691	}	1083	}
692	else	1084	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		1086
695	event ((W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
696	}	1088	}
697	}	1089	}
698		1090
699	static void	1091	static void
700	periodics_reschedule (ev_tstamp diff)	1092	periodics_reschedule (EV_P)
701	{	1093	{
702	int i;	1094	int i;
703		1095
704	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
706	{	1098	{
707	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
708		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
709	if (w->interval)	1103	else if (w->interval)
710	{
711	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
712
713	if (fabs (diff) >= 1e-4)
714	{
715	ev_periodic_stop (w);
716	ev_periodic_start (w);
717
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}
720	}
721	}	1105	}
722	}
723		1106
724	static int	1107	/* now rebuild the heap */
		1108	for (i = periodiccnt >> 1; i--; )
		1109	downheap ((WT *)periodics, periodiccnt, i);
		1110	}
		1111	#endif
		1112
		1113	inline int
725	time_update_monotonic (void)	1114	time_update_monotonic (EV_P)
726	{	1115	{
727	now = get_clock ();	1116	mn_now = get_clock ();
728		1117
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	1119	{
731	ev_now = now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
732	return 0;	1121	return 0;
733	}	1122	}
734	else	1123	else
735	{	1124	{
736	now_floor = now;	1125	now_floor = mn_now;
737	ev_now = ev_time ();	1126	ev_rt_now = ev_time ();
738	return 1;	1127	return 1;
739	}	1128	}
740	}	1129	}
741		1130
742	static void	1131	inline void
743	time_update (void)	1132	time_update (EV_P)
744	{	1133	{
745	int i;	1134	int i;
746		1135
747	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
749	{	1138	{
750	if (time_update_monotonic ())	1139	if (time_update_monotonic (EV_A))
751	{	1140	{
752	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
753		1142
754	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
755	{	1144	{
756	diff = ev_now - now;	1145	rtmn_diff = ev_rt_now - mn_now;
757		1146
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	1148	return; /* all is well */
760		1149
761	ev_now = ev_time ();	1150	ev_rt_now = ev_time ();
762	now = get_clock ();	1151	mn_now = get_clock ();
763	now_floor = now;	1152	now_floor = mn_now;
764	}	1153	}
765		1154
		1155	# if EV_PERIODICS
766	periodics_reschedule (diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
767	/* no timer adjustment, as the monotonic clock doesn't jump */	1158	/* no timer adjustment, as the monotonic clock doesn't jump */
		1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
768	}	1160	}
769	}	1161	}
770	else	1162	else
771	#endif	1163	#endif
772	{	1164	{
773	ev_now = ev_time ();	1165	ev_rt_now = ev_time ();
774		1166
775	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1167	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
776	{	1168	{
		1169	#if EV_PERIODICS
777	periodics_reschedule (ev_now - now);	1170	periodics_reschedule (EV_A);
		1171	#endif
778		1172
779	/* adjust timers. this is easy, as the offset is the same for all */	1173	/* adjust timers. this is easy, as the offset is the same for all */
780	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
782	}	1176	}
783		1177
784	now = ev_now;	1178	mn_now = ev_rt_now;
785	}	1179	}
786	}	1180	}
787		1181
788	int ev_loop_done;	1182	void
		1183	ev_ref (EV_P)
		1184	{
		1185	++activecnt;
		1186	}
789		1187
		1188	void
		1189	ev_unref (EV_P)
		1190	{
		1191	--activecnt;
		1192	}
		1193
		1194	static int loop_done;
		1195
		1196	void
790	void ev_loop (int flags)	1197	ev_loop (EV_P_ int flags)
791	{	1198	{
792	double block;	1199	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
794		1201
795	do	1202	while (activecnt)
796	{	1203	{
797	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
799	{	1206	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	1208	call_pending (EV_A);
802	}	1209	}
803		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
804	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
805	fd_reify ();	1216	fd_reify (EV_A);
806		1217
807	/* calculate blocking time */	1218	/* calculate blocking time */
808		1219
809	/* we only need this for !monotonic clockor timers, but as we basically	1220	/* we only need this for !monotonic clock or timers, but as we basically
810	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
811	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
813	time_update_monotonic ();	1224	time_update_monotonic (EV_A);
814	else	1225	else
815	#endif	1226	#endif
816	{	1227	{
817	ev_now = ev_time ();	1228	ev_rt_now = ev_time ();
818	now = ev_now;	1229	mn_now = ev_rt_now;
819	}	1230	}
820		1231
821	if (flags & EVLOOP_NONBLOCK || idlecnt)	1232	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;	1233	block = 0.;
823	else	1234	else
824	{	1235	{
825	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
826		1237
827	if (timercnt)	1238	if (timercnt)
828	{	1239	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
830	if (block > to) block = to;	1241	if (block > to) block = to;
831	}	1242	}
832		1243
		1244	#if EV_PERIODICS
833	if (periodiccnt)	1245	if (periodiccnt)
834	{	1246	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
836	if (block > to) block = to;	1248	if (block > to) block = to;
837	}	1249	}
		1250	#endif
838		1251
839	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
840	}	1253	}
841		1254
842	method_poll (block);	1255	method_poll (EV_A_ block);
843		1256
844	/* update ev_now, do magic */	1257	/* update ev_rt_now, do magic */
845	time_update ();	1258	time_update (EV_A);
846		1259
847	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
849	periodics_reify (); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
850		1265
851	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
852	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1269
855	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
856	if (checkcnt)	1271	if (expect_false (checkcnt))
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1273
859	call_pending ();	1274	call_pending (EV_A);
860	}
861	while (!ev_loop_done);
862		1275
		1276	if (expect_false (loop_done))
		1277	break;
		1278	}
		1279
863	if (ev_loop_done != 2)	1280	if (loop_done != 2)
864	ev_loop_done = 0;	1281	loop_done = 0;
		1282	}
		1283
		1284	void
		1285	ev_unloop (EV_P_ int how)
		1286	{
		1287	loop_done = how;
865	}	1288	}
866		1289
867	/*****************************************************************************/	1290	/*****************************************************************************/
868		1291
869	static void	1292	inline void
870	wlist_add (WL *head, WL elem)	1293	wlist_add (WL *head, WL elem)
871	{	1294	{
872	elem->next = *head;	1295	elem->next = *head;
873	*head = elem;	1296	*head = elem;
874	}	1297	}
875		1298
876	static void	1299	inline void
877	wlist_del (WL *head, WL elem)	1300	wlist_del (WL *head, WL elem)
878	{	1301	{
879	while (*head)	1302	while (*head)
880	{	1303	{
881	if (*head == elem)	1304	if (*head == elem)
…		…
886		1309
887	head = &(*head)->next;	1310	head = &(*head)->next;
888	}	1311	}
889	}	1312	}
890		1313
891	static void	1314	inline void
892	ev_clear_pending (W w)	1315	ev_clear_pending (EV_P_ W w)
893	{	1316	{
894	if (w->pending)	1317	if (w->pending)
895	{	1318	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1320	w->pending = 0;
898	}	1321	}
899	}	1322	}
900		1323
901	static void	1324	inline void
902	ev_start (W w, int active)	1325	ev_start (EV_P_ W w, int active)
903	{	1326	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1329
907	w->active = active;	1330	w->active = active;
		1331	ev_ref (EV_A);
908	}	1332	}
909		1333
910	static void	1334	inline void
911	ev_stop (W w)	1335	ev_stop (EV_P_ W w)
912	{	1336	{
		1337	ev_unref (EV_A);
913	w->active = 0;	1338	w->active = 0;
914	}	1339	}
915		1340
916	/*****************************************************************************/	1341	/*****************************************************************************/
917		1342
918	void	1343	void
919	ev_io_start (struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
920	{	1345	{
921	int fd = w->fd;	1346	int fd = w->fd;
922		1347
923	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
924	return;	1349	return;
925		1350
926	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
927		1352
928	ev_start ((W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1356
932	fd_change (fd);	1357	fd_change (EV_A_ fd);
933	}	1358	}
934		1359
935	void	1360	void
936	ev_io_stop (struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
937	{	1362	{
938	ev_clear_pending ((W)w);	1363	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
940	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
941		1368
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
944		1371
945	fd_change (w->fd);	1372	fd_change (EV_A_ w->fd);
946	}	1373	}
947		1374
948	void	1375	void
949	ev_timer_start (struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
950	{	1377	{
951	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
952	return;	1379	return;
953		1380
954	w->at += now;	1381	((WT)w)->at += mn_now;
955		1382
956	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
957		1384
958	ev_start ((W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
960	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
962	}
963		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1391	}
		1392
964	void	1393	void
965	ev_timer_stop (struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
966	{	1395	{
967	ev_clear_pending ((W)w);	1396	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
969	return;	1398	return;
970		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
971	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
972	{	1403	{
973	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
975	}	1406	}
976		1407
977	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
978		1409
979	ev_stop ((W)w);	1410	ev_stop (EV_A_ (W)w);
980	}	1411	}
981		1412
982	void	1413	void
983	ev_timer_again (struct ev_timer *w)	1414	ev_timer_again (EV_P_ struct ev_timer *w)
984	{	1415	{
985	if (ev_is_active (w))	1416	if (ev_is_active (w))
986	{	1417	{
987	if (w->repeat)	1418	if (w->repeat)
988	{	1419	{
989	w->at = now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1422	}
992	else	1423	else
993	ev_timer_stop (w);	1424	ev_timer_stop (EV_A_ w);
994	}	1425	}
995	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
996	ev_timer_start (w);	1429	ev_timer_start (EV_A_ w);
		1430	}
997	}	1431	}
998		1432
		1433	#if EV_PERIODICS
999	void	1434	void
1000	ev_periodic_start (struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
1001	{	1436	{
1002	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1003	return;	1438	return;
1004		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
1005	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1006
1007	/* this formula differs from the one in periodic_reify because we do not always round up */	1445	/* this formula differs from the one in periodic_reify because we do not always round up */
1008	if (w->interval)
1009	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1447	}
1010		1448
1011	ev_start ((W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1013	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1455	}
		1456
1017	void	1457	void
1018	ev_periodic_stop (struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1019	{	1459	{
1020	ev_clear_pending ((W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1022	return;	1462	return;
1023		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
1024	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
1025	{	1467	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1028	}	1470	}
1029		1471
1030	ev_stop ((W)w);	1472	ev_stop (EV_A_ (W)w);
		1473	}
		1474
		1475	void
		1476	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1477	{
		1478	/* TODO: use adjustheap and recalculation */
		1479	ev_periodic_stop (EV_A_ w);
		1480	ev_periodic_start (EV_A_ w);
		1481	}
		1482	#endif
		1483
		1484	void
		1485	ev_idle_start (EV_P_ struct ev_idle *w)
		1486	{
		1487	if (expect_false (ev_is_active (w)))
		1488	return;
		1489
		1490	ev_start (EV_A_ (W)w, ++idlecnt);
		1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1492	idles [idlecnt - 1] = w;
		1493	}
		1494
		1495	void
		1496	ev_idle_stop (EV_P_ struct ev_idle *w)
		1497	{
		1498	ev_clear_pending (EV_A_ (W)w);
		1499	if (expect_false (!ev_is_active (w)))
		1500	return;
		1501
		1502	idles [((W)w)->active - 1] = idles [--idlecnt];
		1503	ev_stop (EV_A_ (W)w);
		1504	}
		1505
		1506	void
		1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1508	{
		1509	if (expect_false (ev_is_active (w)))
		1510	return;
		1511
		1512	ev_start (EV_A_ (W)w, ++preparecnt);
		1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1514	prepares [preparecnt - 1] = w;
		1515	}
		1516
		1517	void
		1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1519	{
		1520	ev_clear_pending (EV_A_ (W)w);
		1521	if (expect_false (!ev_is_active (w)))
		1522	return;
		1523
		1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1525	ev_stop (EV_A_ (W)w);
		1526	}
		1527
		1528	void
		1529	ev_check_start (EV_P_ struct ev_check *w)
		1530	{
		1531	if (expect_false (ev_is_active (w)))
		1532	return;
		1533
		1534	ev_start (EV_A_ (W)w, ++checkcnt);
		1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1536	checks [checkcnt - 1] = w;
		1537	}
		1538
		1539	void
		1540	ev_check_stop (EV_P_ struct ev_check *w)
		1541	{
		1542	ev_clear_pending (EV_A_ (W)w);
		1543	if (expect_false (!ev_is_active (w)))
		1544	return;
		1545
		1546	checks [((W)w)->active - 1] = checks [--checkcnt];
		1547	ev_stop (EV_A_ (W)w);
1031	}	1548	}
1032		1549
1033	#ifndef SA_RESTART	1550	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1551	# define SA_RESTART 0
1035	#endif	1552	#endif
1036		1553
1037	void	1554	void
1038	ev_signal_start (struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
1039	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
1040	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1041	return;	1561	return;
1042		1562
1043	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1044		1564
1045	ev_start ((W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1568
1049	if (!w->next)	1569	if (!((WL)w)->next)
1050	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1051	struct sigaction sa;	1574	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1056	}	1580	}
1057	}	1581	}
1058		1582
1059	void	1583	void
1060	ev_signal_stop (struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1061	{	1585	{
1062	ev_clear_pending ((W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1064	return;	1588	return;
1065		1589
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1591	ev_stop (EV_A_ (W)w);
1068		1592
1069	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1071	}	1595	}
1072		1596
1073	void	1597	void
1074	ev_idle_start (struct ev_idle *w)
1075	{
1076	if (ev_is_active (w))
1077	return;
1078
1079	ev_start ((W)w, ++idlecnt);
1080	array_needsize (idles, idlemax, idlecnt, );
1081	idles [idlecnt - 1] = w;
1082	}
1083
1084	void
1085	ev_idle_stop (struct ev_idle *w)
1086	{
1087	ev_clear_pending ((W)w);
1088	if (ev_is_active (w))
1089	return;
1090
1091	idles [w->active - 1] = idles [--idlecnt];
1092	ev_stop ((W)w);
1093	}
1094
1095	void
1096	ev_prepare_start (struct ev_prepare *w)
1097	{
1098	if (ev_is_active (w))
1099	return;
1100
1101	ev_start ((W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );
1103	prepares [preparecnt - 1] = w;
1104	}
1105
1106	void
1107	ev_prepare_stop (struct ev_prepare *w)
1108	{
1109	ev_clear_pending ((W)w);
1110	if (ev_is_active (w))
1111	return;
1112
1113	prepares [w->active - 1] = prepares [--preparecnt];
1114	ev_stop ((W)w);
1115	}
1116
1117	void
1118	ev_check_start (struct ev_check *w)
1119	{
1120	if (ev_is_active (w))
1121	return;
1122
1123	ev_start ((W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );
1125	checks [checkcnt - 1] = w;
1126	}
1127
1128	void
1129	ev_check_stop (struct ev_check *w)
1130	{
1131	ev_clear_pending ((W)w);
1132	if (ev_is_active (w))
1133	return;
1134
1135	checks [w->active - 1] = checks [--checkcnt];
1136	ev_stop ((W)w);
1137	}
1138
1139	void
1140	ev_child_start (struct ev_child *w)	1598	ev_child_start (EV_P_ struct ev_child *w)
1141	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1142	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1143	return;	1604	return;
1144		1605
1145	ev_start ((W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}	1608	}
1148		1609
1149	void	1610	void
1150	ev_child_stop (struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1151	{	1612	{
1152	ev_clear_pending ((W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1154	return;	1615	return;
1155		1616
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1157	ev_stop ((W)w);	1618	ev_stop (EV_A_ (W)w);
1158	}	1619	}
1159		1620
1160	/*****************************************************************************/	1621	/*****************************************************************************/
1161		1622
1162	struct ev_once	1623	struct ev_once
…		…
1166	void (*cb)(int revents, void *arg);	1627	void (*cb)(int revents, void *arg);
1167	void *arg;	1628	void *arg;
1168	};	1629	};
1169		1630
1170	static void	1631	static void
1171	once_cb (struct ev_once *once, int revents)	1632	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	1633	{
1173	void (*cb)(int revents, void *arg) = once->cb;	1634	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	1635	void *arg = once->arg;
1175		1636
1176	ev_io_stop (&once->io);	1637	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	1639	ev_free (once);
1179		1640
1180	cb (revents, arg);	1641	cb (revents, arg);
1181	}	1642	}
1182		1643
1183	static void	1644	static void
1184	once_cb_io (struct ev_io *w, int revents)	1645	once_cb_io (EV_P_ struct ev_io *w, int revents)
1185	{	1646	{
1186	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1647	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1187	}	1648	}
1188		1649
1189	static void	1650	static void
1190	once_cb_to (struct ev_timer *w, int revents)	1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1191	{	1652	{
1192	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1653	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1193	}	1654	}
1194		1655
1195	void	1656	void
1196	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1657	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1197	{	1658	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1199		1660
1200	if (!once)	1661	if (expect_false (!once))
		1662	{
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1663	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1202	else	1664	return;
1203	{	1665	}
		1666
1204	once->cb = cb;	1667	once->cb = cb;
1205	once->arg = arg;	1668	once->arg = arg;
1206		1669
1207	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1208	if (fd >= 0)	1671	if (fd >= 0)
1209	{	1672	{
1210	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	1674	ev_io_start (EV_A_ &once->io);
1212	}	1675	}
1213		1676
1214	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	1678	if (timeout >= 0.)
1216	{	1679	{
1217	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	1681	ev_timer_start (EV_A_ &once->to);
1219	}
1220	}
1221	}
1222
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{	1682	}
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}	1683	}
1300		1684
		1685	#ifdef __cplusplus
		1686	}
1301	#endif	1687	#endif
1302		1688
1303
1304
1305

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