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Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 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	{
		630	int old_errno = errno;
418	gotsig = 1;	631	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
		633	errno = old_errno;
420	}	634	}
421	}	635	}
422		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
423	static void	657	static void
424	sigcb (struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	659	{
426	struct ev_signal *w;
427	int signum;	660	int signum;
428		661
429	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	663	gotsig = 0;
431		664
432	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
434	{	667	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	668	}
441		669
442	static void	670	static void
443	siginit (void)	671	fd_intern (int fd)
444	{	672	{
445	#ifndef WIN32	673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	677	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	678	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	679	#endif
		680	}
		681
		682	static void
		683	siginit (EV_P)
		684	{
		685	fd_intern (sigpipe [0]);
		686	fd_intern (sigpipe [1]);
453		687
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
		690	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	691	}
457		692
458	/*****************************************************************************/	693	/*****************************************************************************/
459		694
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
472	static struct ev_signal childev;	699	static struct ev_signal childev;
473
474	#ifndef WIN32
475		700
476	#ifndef WCONTINUED	701	#ifndef WCONTINUED
477	# define WCONTINUED 0	702	# define WCONTINUED 0
478	#endif	703	#endif
479		704
480	static void	705	static void
481	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)
482	{	707	{
483	struct ev_child *w;	708	struct ev_child *w;
484		709
485	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)
486	if (w->pid == pid || !w->pid)	711	if (w->pid == pid || !w->pid)
487	{	712	{
488	w->priority = sw->priority; /* need to do it *now* */	713	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
489	w->rpid = pid;	714	w->rpid = pid;
490	w->rstatus = status;	715	w->rstatus = status;
491	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
492	event ((W)w, EV_CHILD);	716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
493	}	717	}
494	}	718	}
495		719
496	static void	720	static void
497	childcb (struct ev_signal *sw, int revents)	721	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	722	{
499	int pid, status;	723	int pid, status;
500		724
501	printf ("chld %x\n", revents);//D
502	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	725	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
503	{	726	{
504	/* 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 */
505	event ((W)sw, EV_SIGNAL);	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
506		729
507	child_reap (sw, pid, pid, status);	730	child_reap (EV_A_ sw, pid, pid, status);
508	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 */
509	}	732	}
510	}	733	}
511		734
512	#endif	735	#endif
513		736
514	/*****************************************************************************/	737	/*****************************************************************************/
515		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
516	#if EV_USE_KQUEUE	742	#if EV_USE_KQUEUE
517	# include "ev_kqueue.c"	743	# include "ev_kqueue.c"
518	#endif	744	#endif
519	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
520	# include "ev_epoll.c"	746	# include "ev_epoll.c"
…		…
536	ev_version_minor (void)	762	ev_version_minor (void)
537	{	763	{
538	return EV_VERSION_MINOR;	764	return EV_VERSION_MINOR;
539	}	765	}
540		766
541	/* 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 */
542	static int	768	static int
543	enable_secure ()	769	enable_secure (void)
544	{	770	{
		771	#ifdef _WIN32
		772	return 0;
		773	#else
545	return getuid () != geteuid ()	774	return getuid () != geteuid ()
546	|| getgid () != getegid ();	775	|| getgid () != getegid ();
		776	#endif
547	}	777	}
548		778
549	int ev_init (int methods)	779	unsigned int
		780	ev_method (EV_P)
550	{	781	{
		782	return method;
		783	}
		784
		785	static void
		786	loop_init (EV_P_ unsigned int flags)
		787	{
551	if (!ev_method)	788	if (!method)
552	{	789	{
553	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
554	{	791	{
555	struct timespec ts;	792	struct timespec ts;
556	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
557	have_monotonic = 1;	794	have_monotonic = 1;
558	}	795	}
559	#endif	796	#endif
560		797
561	ev_now = ev_time ();	798	ev_rt_now = ev_time ();
562	now = get_clock ();	799	mn_now = get_clock ();
563	now_floor = now;	800	now_floor = mn_now;
564	diff = ev_now - now;	801	rtmn_diff = ev_rt_now - mn_now;
565		802
566	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
567	return 0;
568
569	if (methods == EVMETHOD_AUTO)
570	if (!enable_secure () && getenv ("LIBEV_METHODS"))
571	methods = atoi (getenv ("LIBEV_METHODS"));	804	flags = atoi (getenv ("LIBEV_FLAGS"));
572	else
573	methods = EVMETHOD_ANY;
574		805
		806	if (!(flags & 0x0000ffff))
		807	flags |= 0x0000ffff;
		808
575	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
576	#if EV_USE_KQUEUE	813	#if EV_USE_KQUEUE
577	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
578	#endif	815	#endif
579	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
580	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
581	#endif	818	#endif
582	#if EV_USE_POLL	819	#if EV_USE_POLL
583	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
584	#endif	821	#endif
585	#if EV_USE_SELECT	822	#if EV_USE_SELECT
586	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
587	#endif	824	#endif
588		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
589	if (ev_method)	952	if (ev_method (EV_A))
590	{	953	{
591	ev_watcher_init (&sigev, sigcb);
592	ev_set_priority (&sigev, EV_MAXPRI);
593	siginit ();	954	siginit (EV_A);
594		955
595	#ifndef WIN32	956	#ifndef _WIN32
596	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
597	ev_set_priority (&childev, EV_MAXPRI);	958	ev_set_priority (&childev, EV_MAXPRI);
598	ev_signal_start (&childev);	959	ev_signal_start (EV_A_ &childev);
		960	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	961	#endif
600	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
601	}	965	}
602		966
603	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;
604	}	1000	}
605		1001
606	/*****************************************************************************/	1002	/*****************************************************************************/
607		1003
608	void
609	ev_fork_prepare (void)
610	{
611	/* nop */
612	}
613
614	void
615	ev_fork_parent (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_child (void)
622	{
623	#if EV_USE_EPOLL
624	if (ev_method == EVMETHOD_EPOLL)
625	epoll_postfork_child ();
626	#endif
627
628	ev_io_stop (&sigev);
629	close (sigpipe [0]);
630	close (sigpipe [1]);
631	pipe (sigpipe);
632	siginit ();
633	}
634
635	/*****************************************************************************/
636
637	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
638	call_pending (void)	1017	call_pending (EV_P)
639	{	1018	{
640	int pri;	1019	int pri;
641		1020
642	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
643	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
644	{	1023	{
645	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
646		1025
647	if (p->w)	1026	if (expect_true (p->w))
648	{	1027	{
649	p->w->pending = 0;	1028	p->w->pending = 0;
650	p->w->cb (p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
651	}	1030	}
652	}	1031	}
653	}	1032	}
654		1033
655	static void	1034	inline void
656	timers_reify (void)	1035	timers_reify (EV_P)
657	{	1036	{
658	while (timercnt && timers [0]->at <= now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
659	{	1038	{
660	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)));
661		1042
662	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
663	if (w->repeat)	1044	if (w->repeat)
664	{	1045	{
665	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
666	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
667	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
668	}	1053	}
669	else	1054	else
670	ev_timer_stop (w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
671		1056
672	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
673	}	1058	}
674	}	1059	}
675		1060
676	static void	1061	#if EV_PERIODICS
		1062	inline void
677	periodics_reify (void)	1063	periodics_reify (EV_P)
678	{	1064	{
679	while (periodiccnt && periodics [0]->at <= ev_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
680	{	1066	{
681	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
682		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
683	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
684	if (w->interval)	1072	if (w->reschedule_cb)
685	{	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	{
686	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;
687	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));
688	downheap ((WT *)periodics, periodiccnt, 0);	1082	downheap ((WT *)periodics, periodiccnt, 0);
689	}	1083	}
690	else	1084	else
691	ev_periodic_stop (w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
692		1086
693	event ((W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
694	}	1088	}
695	}	1089	}
696		1090
697	static void	1091	static void
698	periodics_reschedule (ev_tstamp diff)	1092	periodics_reschedule (EV_P)
699	{	1093	{
700	int i;	1094	int i;
701		1095
702	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
703	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
704	{	1098	{
705	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
706		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
707	if (w->interval)	1103	else if (w->interval)
708	{
709	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;
710
711	if (fabs (diff) >= 1e-4)
712	{
713	ev_periodic_stop (w);
714	ev_periodic_start (w);
715
716	i = 0; /* restart loop, inefficient, but time jumps should be rare */
717	}
718	}
719	}	1105	}
720	}
721		1106
722	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
723	time_update_monotonic (void)	1114	time_update_monotonic (EV_P)
724	{	1115	{
725	now = get_clock ();	1116	mn_now = get_clock ();
726		1117
727	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
728	{	1119	{
729	ev_now = now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
730	return 0;	1121	return 0;
731	}	1122	}
732	else	1123	else
733	{	1124	{
734	now_floor = now;	1125	now_floor = mn_now;
735	ev_now = ev_time ();	1126	ev_rt_now = ev_time ();
736	return 1;	1127	return 1;
737	}	1128	}
738	}	1129	}
739		1130
740	static void	1131	inline void
741	time_update (void)	1132	time_update (EV_P)
742	{	1133	{
743	int i;	1134	int i;
744		1135
745	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
746	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
747	{	1138	{
748	if (time_update_monotonic ())	1139	if (time_update_monotonic (EV_A))
749	{	1140	{
750	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
751		1142
752	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 */
753	{	1144	{
754	diff = ev_now - now;	1145	rtmn_diff = ev_rt_now - mn_now;
755		1146
756	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
757	return; /* all is well */	1148	return; /* all is well */
758		1149
759	ev_now = ev_time ();	1150	ev_rt_now = ev_time ();
760	now = get_clock ();	1151	mn_now = get_clock ();
761	now_floor = now;	1152	now_floor = mn_now;
762	}	1153	}
763		1154
		1155	# if EV_PERIODICS
764	periodics_reschedule (diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
765	/* 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) */
766	}	1160	}
767	}	1161	}
768	else	1162	else
769	#endif	1163	#endif
770	{	1164	{
771	ev_now = ev_time ();	1165	ev_rt_now = ev_time ();
772		1166
773	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))
774	{	1168	{
		1169	#if EV_PERIODICS
775	periodics_reschedule (ev_now - now);	1170	periodics_reschedule (EV_A);
		1171	#endif
776		1172
777	/* 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 */
778	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
779	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
780	}	1176	}
781		1177
782	now = ev_now;	1178	mn_now = ev_rt_now;
783	}	1179	}
784	}	1180	}
785		1181
786	int ev_loop_done;	1182	void
		1183	ev_ref (EV_P)
		1184	{
		1185	++activecnt;
		1186	}
787		1187
		1188	void
		1189	ev_unref (EV_P)
		1190	{
		1191	--activecnt;
		1192	}
		1193
		1194	static int loop_done;
		1195
		1196	void
788	void ev_loop (int flags)	1197	ev_loop (EV_P_ int flags)
789	{	1198	{
790	double block;	1199	double block;
791	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
792		1201
793	do	1202	while (activecnt)
794	{	1203	{
795	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
796	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
797	{	1206	{
798	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
799	call_pending ();	1208	call_pending (EV_A);
800	}	1209	}
801		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
802	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
803	fd_reify ();	1216	fd_reify (EV_A);
804		1217
805	/* calculate blocking time */	1218	/* calculate blocking time */
806		1219
807	/* 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
808	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
809	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
810	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
811	time_update_monotonic ();	1224	time_update_monotonic (EV_A);
812	else	1225	else
813	#endif	1226	#endif
814	{	1227	{
815	ev_now = ev_time ();	1228	ev_rt_now = ev_time ();
816	now = ev_now;	1229	mn_now = ev_rt_now;
817	}	1230	}
818		1231
819	if (flags & EVLOOP_NONBLOCK || idlecnt)	1232	if (flags & EVLOOP_NONBLOCK || idlecnt)
820	block = 0.;	1233	block = 0.;
821	else	1234	else
822	{	1235	{
823	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
824		1237
825	if (timercnt)	1238	if (timercnt)
826	{	1239	{
827	ev_tstamp to = timers [0]->at - now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
828	if (block > to) block = to;	1241	if (block > to) block = to;
829	}	1242	}
830		1243
		1244	#if EV_PERIODICS
831	if (periodiccnt)	1245	if (periodiccnt)
832	{	1246	{
833	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
834	if (block > to) block = to;	1248	if (block > to) block = to;
835	}	1249	}
		1250	#endif
836		1251
837	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
838	}	1253	}
839		1254
840	method_poll (block);	1255	method_poll (EV_A_ block);
841		1256
842	/* update ev_now, do magic */	1257	/* update ev_rt_now, do magic */
843	time_update ();	1258	time_update (EV_A);
844		1259
845	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
846	timers_reify (); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
847	periodics_reify (); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
848		1265
849	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
850	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
851	queue_events ((W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
852		1269
853	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
854	if (checkcnt)	1271	if (expect_false (checkcnt))
855	queue_events ((W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
856		1273
857	call_pending ();	1274	call_pending (EV_A);
858	}
859	while (!ev_loop_done);
860		1275
		1276	if (expect_false (loop_done))
		1277	break;
		1278	}
		1279
861	if (ev_loop_done != 2)	1280	if (loop_done != 2)
862	ev_loop_done = 0;	1281	loop_done = 0;
		1282	}
		1283
		1284	void
		1285	ev_unloop (EV_P_ int how)
		1286	{
		1287	loop_done = how;
863	}	1288	}
864		1289
865	/*****************************************************************************/	1290	/*****************************************************************************/
866		1291
867	static void	1292	inline void
868	wlist_add (WL *head, WL elem)	1293	wlist_add (WL *head, WL elem)
869	{	1294	{
870	elem->next = *head;	1295	elem->next = *head;
871	*head = elem;	1296	*head = elem;
872	}	1297	}
873		1298
874	static void	1299	inline void
875	wlist_del (WL *head, WL elem)	1300	wlist_del (WL *head, WL elem)
876	{	1301	{
877	while (*head)	1302	while (*head)
878	{	1303	{
879	if (*head == elem)	1304	if (*head == elem)
…		…
884		1309
885	head = &(*head)->next;	1310	head = &(*head)->next;
886	}	1311	}
887	}	1312	}
888		1313
889	static void	1314	inline void
890	ev_clear_pending (W w)	1315	ev_clear_pending (EV_P_ W w)
891	{	1316	{
892	if (w->pending)	1317	if (w->pending)
893	{	1318	{
894	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;
895	w->pending = 0;	1320	w->pending = 0;
896	}	1321	}
897	}	1322	}
898		1323
899	static void	1324	inline void
900	ev_start (W w, int active)	1325	ev_start (EV_P_ W w, int active)
901	{	1326	{
902	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
903	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
904		1329
905	w->active = active;	1330	w->active = active;
		1331	ev_ref (EV_A);
906	}	1332	}
907		1333
908	static void	1334	inline void
909	ev_stop (W w)	1335	ev_stop (EV_P_ W w)
910	{	1336	{
		1337	ev_unref (EV_A);
911	w->active = 0;	1338	w->active = 0;
912	}	1339	}
913		1340
914	/*****************************************************************************/	1341	/*****************************************************************************/
915		1342
916	void	1343	void
917	ev_io_start (struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
918	{	1345	{
919	int fd = w->fd;	1346	int fd = w->fd;
920		1347
921	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
922	return;	1349	return;
923		1350
924	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
925		1352
926	ev_start ((W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
927	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
928	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
929		1356
930	fd_change (fd);	1357	fd_change (EV_A_ fd);
931	}	1358	}
932		1359
933	void	1360	void
934	ev_io_stop (struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
935	{	1362	{
936	ev_clear_pending ((W)w);	1363	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
938	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
939		1368
940	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
941	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
942		1371
943	fd_change (w->fd);	1372	fd_change (EV_A_ w->fd);
944	}	1373	}
945		1374
946	void	1375	void
947	ev_timer_start (struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
948	{	1377	{
949	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
950	return;	1379	return;
951		1380
952	w->at += now;	1381	((WT)w)->at += mn_now;
953		1382
954	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.));
955		1384
956	ev_start ((W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
957	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
958	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
959	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
960	}
961		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1391	}
		1392
962	void	1393	void
963	ev_timer_stop (struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
964	{	1395	{
965	ev_clear_pending ((W)w);	1396	ev_clear_pending (EV_A_ (W)w);
966	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
967	return;	1398	return;
968		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
969	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
970	{	1403	{
971	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
972	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
973	}	1406	}
974		1407
975	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
976		1409
977	ev_stop ((W)w);	1410	ev_stop (EV_A_ (W)w);
978	}	1411	}
979		1412
980	void	1413	void
981	ev_timer_again (struct ev_timer *w)	1414	ev_timer_again (EV_P_ struct ev_timer *w)
982	{	1415	{
983	if (ev_is_active (w))	1416	if (ev_is_active (w))
984	{	1417	{
985	if (w->repeat)	1418	if (w->repeat)
986	{	1419	{
987	w->at = now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
988	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
989	}	1422	}
990	else	1423	else
991	ev_timer_stop (w);	1424	ev_timer_stop (EV_A_ w);
992	}	1425	}
993	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
994	ev_timer_start (w);	1429	ev_timer_start (EV_A_ w);
		1430	}
995	}	1431	}
996		1432
		1433	#if EV_PERIODICS
997	void	1434	void
998	ev_periodic_start (struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
999	{	1436	{
1000	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1001	return;	1438	return;
1002		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
1003	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.));
1004
1005	/* 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 */
1006	if (w->interval)
1007	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	}
1008		1448
1009	ev_start ((W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
1010	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1011	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
1012	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
1013	}
1014		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1455	}
		1456
1015	void	1457	void
1016	ev_periodic_stop (struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1017	{	1459	{
1018	ev_clear_pending ((W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1019	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1020	return;	1462	return;
1021		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
1022	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
1023	{	1467	{
1024	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1025	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1026	}	1470	}
1027		1471
1028	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);
1029	}	1548	}
1030		1549
1031	#ifndef SA_RESTART	1550	#ifndef SA_RESTART
1032	# define SA_RESTART 0	1551	# define SA_RESTART 0
1033	#endif	1552	#endif
1034		1553
1035	void	1554	void
1036	ev_signal_start (struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
1037	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
1038	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1039	return;	1561	return;
1040		1562
1041	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));
1042		1564
1043	ev_start ((W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1044	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1045	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1046		1568
1047	if (!w->next)	1569	if (!((WL)w)->next)
1048	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1049	struct sigaction sa;	1574	struct sigaction sa;
1050	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1051	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1052	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 */
1053	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1054	}	1580	}
1055	}	1581	}
1056		1582
1057	void	1583	void
1058	ev_signal_stop (struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1059	{	1585	{
1060	ev_clear_pending ((W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1061	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1062	return;	1588	return;
1063		1589
1064	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1065	ev_stop ((W)w);	1591	ev_stop (EV_A_ (W)w);
1066		1592
1067	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1068	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1069	}	1595	}
1070		1596
1071	void	1597	void
1072	ev_idle_start (struct ev_idle *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++idlecnt);
1078	array_needsize (idles, idlemax, idlecnt, );
1079	idles [idlecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_idle_stop (struct ev_idle *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	idles [w->active - 1] = idles [--idlecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_prepare_start (struct ev_prepare *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++preparecnt);
1100	array_needsize (prepares, preparemax, preparecnt, );
1101	prepares [preparecnt - 1] = w;
1102	}
1103
1104	void
1105	ev_prepare_stop (struct ev_prepare *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	prepares [w->active - 1] = prepares [--preparecnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_check_start (struct ev_check *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, ++checkcnt);
1122	array_needsize (checks, checkmax, checkcnt, );
1123	checks [checkcnt - 1] = w;
1124	}
1125
1126	void
1127	ev_check_stop (struct ev_check *w)
1128	{
1129	ev_clear_pending ((W)w);
1130	if (ev_is_active (w))
1131	return;
1132
1133	checks [w->active - 1] = checks [--checkcnt];
1134	ev_stop ((W)w);
1135	}
1136
1137	void
1138	ev_child_start (struct ev_child *w)	1598	ev_child_start (EV_P_ struct ev_child *w)
1139	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1140	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1141	return;	1604	return;
1142		1605
1143	ev_start ((W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1144	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1145	}	1608	}
1146		1609
1147	void	1610	void
1148	ev_child_stop (struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1149	{	1612	{
1150	ev_clear_pending ((W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1151	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1152	return;	1615	return;
1153		1616
1154	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1155	ev_stop ((W)w);	1618	ev_stop (EV_A_ (W)w);
1156	}	1619	}
1157		1620
1158	/*****************************************************************************/	1621	/*****************************************************************************/
1159		1622
1160	struct ev_once	1623	struct ev_once
…		…
1164	void (*cb)(int revents, void *arg);	1627	void (*cb)(int revents, void *arg);
1165	void *arg;	1628	void *arg;
1166	};	1629	};
1167		1630
1168	static void	1631	static void
1169	once_cb (struct ev_once *once, int revents)	1632	once_cb (EV_P_ struct ev_once *once, int revents)
1170	{	1633	{
1171	void (*cb)(int revents, void *arg) = once->cb;	1634	void (*cb)(int revents, void *arg) = once->cb;
1172	void *arg = once->arg;	1635	void *arg = once->arg;
1173		1636
1174	ev_io_stop (&once->io);	1637	ev_io_stop (EV_A_ &once->io);
1175	ev_timer_stop (&once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1176	free (once);	1639	ev_free (once);
1177		1640
1178	cb (revents, arg);	1641	cb (revents, arg);
1179	}	1642	}
1180		1643
1181	static void	1644	static void
1182	once_cb_io (struct ev_io *w, int revents)	1645	once_cb_io (EV_P_ struct ev_io *w, int revents)
1183	{	1646	{
1184	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);
1185	}	1648	}
1186		1649
1187	static void	1650	static void
1188	once_cb_to (struct ev_timer *w, int revents)	1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1189	{	1652	{
1190	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);
1191	}	1654	}
1192		1655
1193	void	1656	void
1194	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)
1195	{	1658	{
1196	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1197		1660
1198	if (!once)	1661	if (expect_false (!once))
		1662	{
1199	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1663	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1200	else	1664	return;
1201	{	1665	}
		1666
1202	once->cb = cb;	1667	once->cb = cb;
1203	once->arg = arg;	1668	once->arg = arg;
1204		1669
1205	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1206	if (fd >= 0)	1671	if (fd >= 0)
1207	{	1672	{
1208	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1209	ev_io_start (&once->io);	1674	ev_io_start (EV_A_ &once->io);
1210	}	1675	}
1211		1676
1212	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1213	if (timeout >= 0.)	1678	if (timeout >= 0.)
1214	{	1679	{
1215	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1216	ev_timer_start (&once->to);	1681	ev_timer_start (EV_A_ &once->to);
1217	}
1218	}
1219	}
1220
1221	/*****************************************************************************/
1222
1223	#if 0
1224
1225	struct ev_io wio;
1226
1227	static void
1228	sin_cb (struct ev_io *w, int revents)
1229	{
1230	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1231	}
1232
1233	static void
1234	ocb (struct ev_timer *w, int revents)
1235	{
1236	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1237	ev_timer_stop (w);
1238	ev_timer_start (w);
1239	}
1240
1241	static void
1242	scb (struct ev_signal *w, int revents)
1243	{
1244	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1245	ev_io_stop (&wio);
1246	ev_io_start (&wio);
1247	}
1248
1249	static void
1250	gcb (struct ev_signal *w, int revents)
1251	{
1252	fprintf (stderr, "generic %x\n", revents);
1253
1254	}
1255
1256	int main (void)
1257	{
1258	ev_init (0);
1259
1260	ev_io_init (&wio, sin_cb, 0, EV_READ);
1261	ev_io_start (&wio);
1262
1263	struct ev_timer t[10000];
1264
1265	#if 0
1266	int i;
1267	for (i = 0; i < 10000; ++i)
1268	{	1682	}
1269	struct ev_timer *w = t + i;
1270	ev_watcher_init (w, ocb, i);
1271	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1272	ev_timer_start (w);
1273	if (drand48 () < 0.5)
1274	ev_timer_stop (w);
1275	}
1276	#endif
1277
1278	struct ev_timer t1;
1279	ev_timer_init (&t1, ocb, 5, 10);
1280	ev_timer_start (&t1);
1281
1282	struct ev_signal sig;
1283	ev_signal_init (&sig, scb, SIGQUIT);
1284	ev_signal_start (&sig);
1285
1286	struct ev_check cw;
1287	ev_check_init (&cw, gcb);
1288	ev_check_start (&cw);
1289
1290	struct ev_idle iw;
1291	ev_idle_init (&iw, gcb);
1292	ev_idle_start (&iw);
1293
1294	ev_loop (0);
1295
1296	return 0;
1297	}	1683	}
1298		1684
		1685	#ifdef __cplusplus
		1686	}
1299	#endif	1687	#endif
1300		1688
1301
1302
1303

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