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Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
80		164
81	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
84	#endif	168	#endif
…		…
86	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
89	#endif	173	#endif
90		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
91	/**/	179	/**/
92		180
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	182	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
98	#include "ev.h"	189	# include "ev.h"
		190	#endif
99		191
100	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	194	# define inline static inline
103	#else	195	#else
104	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
105	# define inline static	197	# define inline static
106	#endif	198	#endif
107		199
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
110		202
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
114	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
117		212
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		214
		215	#ifdef _WIN32
		216	# include "ev_win32.c"
		217	#endif
		218
		219	/*****************************************************************************/
		220
		221	static void (*syserr_cb)(const char *msg);
		222
		223	void ev_set_syserr_cb (void (*cb)(const char *msg))
		224	{
		225	syserr_cb = cb;
		226	}
		227
		228	static void
		229	syserr (const char *msg)
		230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
		234	if (syserr_cb)
		235	syserr_cb (msg);
		236	else
		237	{
		238	perror (msg);
		239	abort ();
		240	}
		241	}
		242
		243	static void *(*alloc)(void *ptr, long size);
		244
		245	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		246	{
		247	alloc = cb;
		248	}
		249
		250	static void *
		251	ev_realloc (void *ptr, long size)
		252	{
		253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		254
		255	if (!ptr && size)
		256	{
		257	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		258	abort ();
		259	}
		260
		261	return ptr;
		262	}
		263
		264	#define ev_malloc(size) ev_realloc (0, (size))
		265	#define ev_free(ptr) ev_realloc ((ptr), 0)
		266
		267	/*****************************************************************************/
		268
		269	typedef struct
		270	{
		271	WL head;
		272	unsigned char events;
		273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
		277	} ANFD;
		278
		279	typedef struct
		280	{
		281	W w;
		282	int events;
		283	} ANPENDING;
		284
		285	#if EV_MULTIPLICITY
		286
		287	struct ev_loop
		288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
		291	#define VAR(name,decl) decl;
		292	#include "ev_vars.h"
		293	#undef VAR
		294	};
		295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
		299
		300	#else
		301
119	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
120	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
121		306
122	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
123		308
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		310
128	/*****************************************************************************/	311	/*****************************************************************************/
129		312
130	ev_tstamp	313	ev_tstamp
131	ev_time (void)	314	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	324	#endif
142	}	325	}
143		326
144	static ev_tstamp	327	inline ev_tstamp
145	get_clock (void)	328	get_clock (void)
146	{	329	{
147	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	331	if (expect_true (have_monotonic))
149	{	332	{
…		…
154	#endif	337	#endif
155		338
156	return ev_time ();	339	return ev_time ();
157	}	340	}
158		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		351
161	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
163	{ \	354	{ \
164	int newcnt = cur; \	355	int newcnt = cur; \
165	do \	356	do \
166	{ \	357	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	359	} \
169	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
170	\	361	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	364	cur = newcnt; \
174	}	365	}
		366
		367	#define array_slim(type,stem) \
		368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		369	{ \
		370	stem ## max = array_roundsize (stem ## cnt >> 1); \
		371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		373	}
		374
		375	#define array_free(stem, idx) \
		376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		377
176	/*****************************************************************************/	378	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		379
188	static void	380	static void
189	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
190	{	382	{
191	while (count--)	383	while (count--)
…		…
196		388
197	++base;	389	++base;
198	}	390	}
199	}	391	}
200		392
201	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
202	{	395	{
203	W w;	396	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		397
207	static ANPENDING *pendings [NUMPRI];	398	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	399	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216	return;	401	return;
217	}	402	}
218		403
219	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	408	}
224		409
225	static void	410	static void
226	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	412	{
228	int i;	413	int i;
229		414
230	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
232	}	417	}
233		418
234	static void	419	inline void
235	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
236	{	421	{
237	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	423	struct ev_io *w;
239		424
240	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	426	{
242	int ev = w->events & events;	427	int ev = w->events & revents;
243		428
244	if (ev)	429	if (ev)
245	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
246	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
247	}	438	}
248		439
249	/*****************************************************************************/	440	/*****************************************************************************/
250		441
251	static int *fdchanges;	442	inline void
252	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	444	{
257	int i;	445	int i;
258		446
259	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
260	{	448	{
…		…
262	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	451	struct ev_io *w;
264		452
265	int events = 0;	453	int events = 0;
266		454
267	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	456	events |= w->events;
269		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
270	anfd->reify = 0;	467	anfd->reify = 0;
271		468
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	470	anfd->events = events;
276	}
277	}	471	}
278		472
279	fdchangecnt = 0;	473	fdchangecnt = 0;
280	}	474	}
281		475
282	static void	476	static void
283	fd_change (int fd)	477	fd_change (EV_P_ int fd)
284	{	478	{
285	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
286	return;	480	return;
287		481
288	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
289		483
290	++fdchangecnt;	484	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
293	}	487	}
294		488
295	static void	489	static void
296	fd_kill (int fd)	490	fd_kill (EV_P_ int fd)
297	{	491	{
298	struct ev_io *w;	492	struct ev_io *w;
299		493
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
302	{	495	{
303	ev_io_stop (w);	496	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
306	}	509	}
307		510
308	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
309	static void	512	static void
310	fd_ebadf (void)	513	fd_ebadf (EV_P)
311	{	514	{
312	int fd;	515	int fd;
313		516
314	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	518	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	520	fd_kill (EV_A_ fd);
318	}	521	}
319		522
320	/* called on ENOMEM in select/poll to kill some fds and retry */	523	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	524	static void
322	fd_enomem (void)	525	fd_enomem (EV_P)
323	{	526	{
324	int fd = anfdmax;	527	int fd;
325		528
326	while (fd--)	529	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	530	if (anfds [fd].events)
328	{	531	{
329	close (fd);
330	fd_kill (fd);	532	fd_kill (EV_A_ fd);
331	return;	533	return;
332	}	534	}
333	}	535	}
334		536
		537	/* usually called after fork if method needs to re-arm all fds from scratch */
		538	static void
		539	fd_rearm_all (EV_P)
		540	{
		541	int fd;
		542
		543	/* this should be highly optimised to not do anything but set a flag */
		544	for (fd = 0; fd < anfdmax; ++fd)
		545	if (anfds [fd].events)
		546	{
		547	anfds [fd].events = 0;
		548	fd_change (EV_A_ fd);
		549	}
		550	}
		551
335	/*****************************************************************************/	552	/*****************************************************************************/
336		553
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	554	static void
344	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
345	{	556	{
346	WT w = timers [k];	557	WT w = heap [k];
347		558
348	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
349	{	560	{
350	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
352	k >>= 1;	563	k >>= 1;
353	}	564	}
354		565
355	timers [k] = w;	566	heap [k] = w;
356	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
357		568
358	}	569	}
359		570
360	static void	571	static void
361	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
362	{	573	{
363	WT w = timers [k];	574	WT w = heap [k];
364		575
365	while (k < (N >> 1))	576	while (k < (N >> 1))
366	{	577	{
367	int j = k << 1;	578	int j = k << 1;
368		579
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	581	++j;
371		582
372	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
373	break;	584	break;
374		585
375	timers [k] = timers [j];	586	heap [k] = heap [j];
376	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
377	k = j;	588	k = j;
378	}	589	}
379		590
380	timers [k] = w;	591	heap [k] = w;
381	timers [k]->active = k + 1;	592	((W)heap [k])->active = k + 1;
		593	}
		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
382	}	600	}
383		601
384	/*****************************************************************************/	602	/*****************************************************************************/
385		603
386	typedef struct	604	typedef struct
387	{	605	{
388	struct ev_signal *head;	606	WL head;
389	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
390	} ANSIG;	608	} ANSIG;
391		609
392	static ANSIG *signals;	610	static ANSIG *signals;
393	static int signalmax;	611	static int signalmax;
…		…
409	}	627	}
410		628
411	static void	629	static void
412	sighandler (int signum)	630	sighandler (int signum)
413	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
414	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
415		637
416	if (!gotsig)	638	if (!gotsig)
417	{	639	{
		640	int old_errno = errno;
418	gotsig = 1;	641	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
420	}	644	}
421	}	645	}
422		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 || signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
423	static void	667	static void
424	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	669	{
426	struct ev_signal *w;
427	int signum;	670	int signum;
428		671
429	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	673	gotsig = 0;
431		674
432	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
434	{	677	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	678	}
441		679
442	static void	680	static void
443	siginit (void)	681	fd_intern (int fd)
444	{	682	{
445	#ifndef WIN32	683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	689	#endif
		690	}
		691
		692	static void
		693	siginit (EV_P)
		694	{
		695	fd_intern (sigpipe [0]);
		696	fd_intern (sigpipe [1]);
453		697
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	701	}
457		702
458	/*****************************************************************************/	703	/*****************************************************************************/
459		704
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
472	static struct ev_signal childev;	709	static struct ev_signal childev;
473
474	#ifndef WIN32
475		710
476	#ifndef WCONTINUED	711	#ifndef WCONTINUED
477	# define WCONTINUED 0	712	# define WCONTINUED 0
478	#endif	713	#endif
479		714
480	static void	715	static void
481	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	717	{
483	struct ev_child *w;	718	struct ev_child *w;
		719
		720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		721	if (w->pid == pid || !w->pid)
		722	{
		723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		724	w->rpid = pid;
		725	w->rstatus = status;
		726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		727	}
		728	}
		729
		730	static void
		731	childcb (EV_P_ struct ev_signal *sw, int revents)
		732	{
484	int pid, status;	733	int pid, status;
485		734
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
488	if (w->pid == pid || !w->pid)	737	/* make sure we are called again until all childs have been reaped */
489	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	739
491	w->rstatus = status;	740	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	742	}
494	}	743	}
495		744
496	#endif	745	#endif
497		746
498	/*****************************************************************************/	747	/*****************************************************************************/
499		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
500	#if EV_USE_KQUEUE	752	#if EV_USE_KQUEUE
501	# include "ev_kqueue.c"	753	# include "ev_kqueue.c"
502	#endif	754	#endif
503	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
504	# include "ev_epoll.c"	756	# include "ev_epoll.c"
…		…
520	ev_version_minor (void)	772	ev_version_minor (void)
521	{	773	{
522	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
523	}	775	}
524		776
525	/* return true if we are running with elevated privileges and ignore env variables */	777	/* return true if we are running with elevated privileges and should ignore env variables */
526	static int	778	static int
527	enable_secure ()	779	enable_secure (void)
528	{	780	{
		781	#ifdef _WIN32
		782	return 0;
		783	#else
529	return getuid () != geteuid ()	784	return getuid () != geteuid ()
530	|| getgid () != getegid ();	785	|| getgid () != getegid ();
		786	#endif
531	}	787	}
532		788
533	int ev_init (int methods)	789	unsigned int
		790	ev_method (EV_P)
534	{	791	{
		792	return method;
		793	}
		794
		795	static void
		796	loop_init (EV_P_ unsigned int flags)
		797	{
535	if (!ev_method)	798	if (!method)
536	{	799	{
537	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
538	{	801	{
539	struct timespec ts;	802	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	804	have_monotonic = 1;
542	}	805	}
543	#endif	806	#endif
544		807
545	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
546	now = get_clock ();	809	mn_now = get_clock ();
547	now_floor = now;	810	now_floor = mn_now;
548	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
549		812
550	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV)
551	return 0;	814	&& !enable_secure ()
552		815	&& getenv ("LIBEV_FLAGS"))
553	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	816	flags = atoi (getenv ("LIBEV_FLAGS"));
556	else
557	methods = EVMETHOD_ANY;
558		817
		818	if (!(flags & EVMETHOD_ALL))
		819	{
		820	flags |= EVMETHOD_ALL;
		821	#if EV_USE_KQUEUE && !defined (__NetBSD__)
		822	/* kqueue is borked on everything but netbsd apparently */
		823	/* it usually doesn't work correctly on anything but sockets and pipes */
		824	flags &= ~EVMETHOD_KQUEUE;
		825	#endif
		826	}
		827
559	ev_method = 0;	828	method = 0;
		829	#if EV_USE_PORT
		830	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		831	#endif
560	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	833	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
562	#endif	834	#endif
563	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	836	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
565	#endif	837	#endif
566	#if EV_USE_POLL	838	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	839	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
568	#endif	840	#endif
569	#if EV_USE_SELECT	841	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	842	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
571	#endif	843	#endif
572		844
		845	ev_init (&sigev, sigcb);
		846	ev_set_priority (&sigev, EV_MAXPRI);
		847	}
		848	}
		849
		850	static void
		851	loop_destroy (EV_P)
		852	{
		853	int i;
		854
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		863	#endif
		864	#if EV_USE_POLL
		865	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		866	#endif
		867	#if EV_USE_SELECT
		868	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		869	#endif
		870
		871	for (i = NUMPRI; i--; )
		872	array_free (pending, [i]);
		873
		874	/* have to use the microsoft-never-gets-it-right macro */
		875	array_free (fdchange, EMPTY0);
		876	array_free (timer, EMPTY0);
		877	#if EV_PERIODICS
		878	array_free (periodic, EMPTY0);
		879	#endif
		880	array_free (idle, EMPTY0);
		881	array_free (prepare, EMPTY0);
		882	array_free (check, EMPTY0);
		883
		884	method = 0;
		885	}
		886
		887	static void
		888	loop_fork (EV_P)
		889	{
		890	#if EV_USE_PORT
		891	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		898	#endif
		899
		900	if (ev_is_active (&sigev))
		901	{
		902	/* default loop */
		903
		904	ev_ref (EV_A);
		905	ev_io_stop (EV_A_ &sigev);
		906	close (sigpipe [0]);
		907	close (sigpipe [1]);
		908
		909	while (pipe (sigpipe))
		910	syserr ("(libev) error creating pipe");
		911
		912	siginit (EV_A);
		913	}
		914
		915	postfork = 0;
		916	}
		917
		918	#if EV_MULTIPLICITY
		919	struct ev_loop *
		920	ev_loop_new (unsigned int flags)
		921	{
		922	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		923
		924	memset (loop, 0, sizeof (struct ev_loop));
		925
		926	loop_init (EV_A_ flags);
		927
		928	if (ev_method (EV_A))
		929	return loop;
		930
		931	return 0;
		932	}
		933
		934	void
		935	ev_loop_destroy (EV_P)
		936	{
		937	loop_destroy (EV_A);
		938	ev_free (loop);
		939	}
		940
		941	void
		942	ev_loop_fork (EV_P)
		943	{
		944	postfork = 1;
		945	}
		946
		947	#endif
		948
		949	#if EV_MULTIPLICITY
		950	struct ev_loop *
		951	ev_default_loop_init (unsigned int flags)
		952	#else
		953	int
		954	ev_default_loop (unsigned int flags)
		955	#endif
		956	{
		957	if (sigpipe [0] == sigpipe [1])
		958	if (pipe (sigpipe))
		959	return 0;
		960
		961	if (!ev_default_loop_ptr)
		962	{
		963	#if EV_MULTIPLICITY
		964	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		965	#else
		966	ev_default_loop_ptr = 1;
		967	#endif
		968
		969	loop_init (EV_A_ flags);
		970
573	if (ev_method)	971	if (ev_method (EV_A))
574	{	972	{
575	ev_watcher_init (&sigev, sigcb);
576	siginit ();	973	siginit (EV_A);
577		974
578	#ifndef WIN32	975	#ifndef _WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	976	ev_signal_init (&childev, childcb, SIGCHLD);
		977	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	978	ev_signal_start (EV_A_ &childev);
		979	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	980	#endif
582	}	981	}
		982	else
		983	ev_default_loop_ptr = 0;
583	}	984	}
584		985
585	return ev_method;	986	return ev_default_loop_ptr;
		987	}
		988
		989	void
		990	ev_default_destroy (void)
		991	{
		992	#if EV_MULTIPLICITY
		993	struct ev_loop *loop = ev_default_loop_ptr;
		994	#endif
		995
		996	#ifndef _WIN32
		997	ev_ref (EV_A); /* child watcher */
		998	ev_signal_stop (EV_A_ &childev);
		999	#endif
		1000
		1001	ev_ref (EV_A); /* signal watcher */
		1002	ev_io_stop (EV_A_ &sigev);
		1003
		1004	close (sigpipe [0]); sigpipe [0] = 0;
		1005	close (sigpipe [1]); sigpipe [1] = 0;
		1006
		1007	loop_destroy (EV_A);
		1008	}
		1009
		1010	void
		1011	ev_default_fork (void)
		1012	{
		1013	#if EV_MULTIPLICITY
		1014	struct ev_loop *loop = ev_default_loop_ptr;
		1015	#endif
		1016
		1017	if (method)
		1018	postfork = 1;
586	}	1019	}
587		1020
588	/*****************************************************************************/	1021	/*****************************************************************************/
589		1022
590	void
591	ev_fork_prepare (void)
592	{
593	/* nop */
594	}
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif
609
610	ev_io_stop (&sigev);
611	close (sigpipe [0]);
612	close (sigpipe [1]);
613	pipe (sigpipe);
614	siginit ();
615	}
616
617	/*****************************************************************************/
618
619	static void	1023	static int
		1024	any_pending (EV_P)
		1025	{
		1026	int pri;
		1027
		1028	for (pri = NUMPRI; pri--; )
		1029	if (pendingcnt [pri])
		1030	return 1;
		1031
		1032	return 0;
		1033	}
		1034
		1035	inline void
620	call_pending (void)	1036	call_pending (EV_P)
621	{	1037	{
622	int pri;	1038	int pri;
623		1039
624	for (pri = NUMPRI; pri--; )	1040	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	1041	while (pendingcnt [pri])
626	{	1042	{
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		1044
629	if (p->w)	1045	if (expect_true (p->w))
630	{	1046	{
631	p->w->pending = 0;	1047	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	1048	EV_CB_INVOKE (p->w, p->events);
633	}	1049	}
634	}	1050	}
635	}	1051	}
636		1052
637	static void	1053	inline void
638	timers_reify (void)	1054	timers_reify (EV_P)
639	{	1055	{
640	while (timercnt && timers [0]->at <= now)	1056	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	1057	{
642	struct ev_timer *w = timers [0];	1058	struct ev_timer *w = timers [0];
		1059
		1060	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		1061
644	/* first reschedule or stop timer */	1062	/* first reschedule or stop timer */
645	if (w->repeat)	1063	if (w->repeat)
646	{	1064	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1065	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1066
648	w->at = now + w->repeat;	1067	((WT)w)->at += w->repeat;
		1068	if (((WT)w)->at < mn_now)
		1069	((WT)w)->at = mn_now;
		1070
649	downheap ((WT *)timers, timercnt, 0);	1071	downheap ((WT *)timers, timercnt, 0);
650	}	1072	}
651	else	1073	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	1074	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1075
654	event ((W)w, EV_TIMEOUT);	1076	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
655	}	1077	}
656	}	1078	}
657		1079
658	static void	1080	#if EV_PERIODICS
		1081	inline void
659	periodics_reify (void)	1082	periodics_reify (EV_P)
660	{	1083	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	1084	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
662	{	1085	{
663	struct ev_periodic *w = periodics [0];	1086	struct ev_periodic *w = periodics [0];
664		1087
		1088	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1089
665	/* first reschedule or stop timer */	1090	/* first reschedule or stop timer */
666	if (w->interval)	1091	if (w->reschedule_cb)
667	{	1092	{
		1093	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1094	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1095	downheap ((WT *)periodics, periodiccnt, 0);
		1096	}
		1097	else if (w->interval)
		1098	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1099	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
669	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1100	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	1101	downheap ((WT *)periodics, periodiccnt, 0);
671	}	1102	}
672	else	1103	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	1104	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1105
675	event ((W)w, EV_PERIODIC);	1106	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
676	}	1107	}
677	}	1108	}
678		1109
679	static void	1110	static void
680	periodics_reschedule (ev_tstamp diff)	1111	periodics_reschedule (EV_P)
681	{	1112	{
682	int i;	1113	int i;
683		1114
684	/* adjust periodics after time jump */	1115	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	1116	for (i = 0; i < periodiccnt; ++i)
686	{	1117	{
687	struct ev_periodic *w = periodics [i];	1118	struct ev_periodic *w = periodics [i];
688		1119
		1120	if (w->reschedule_cb)
		1121	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
689	if (w->interval)	1122	else if (w->interval)
690	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1123	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
692
693	if (fabs (diff) >= 1e-4)
694	{
695	ev_periodic_stop (w);
696	ev_periodic_start (w);
697
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}
700	}
701	}	1124	}
702	}
703		1125
704	static int	1126	/* now rebuild the heap */
		1127	for (i = periodiccnt >> 1; i--; )
		1128	downheap ((WT *)periodics, periodiccnt, i);
		1129	}
		1130	#endif
		1131
		1132	inline int
705	time_update_monotonic (void)	1133	time_update_monotonic (EV_P)
706	{	1134	{
707	now = get_clock ();	1135	mn_now = get_clock ();
708		1136
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1137	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	1138	{
711	ev_now = now + diff;	1139	ev_rt_now = rtmn_diff + mn_now;
712	return 0;	1140	return 0;
713	}	1141	}
714	else	1142	else
715	{	1143	{
716	now_floor = now;	1144	now_floor = mn_now;
717	ev_now = ev_time ();	1145	ev_rt_now = ev_time ();
718	return 1;	1146	return 1;
719	}	1147	}
720	}	1148	}
721		1149
722	static void	1150	inline void
723	time_update (void)	1151	time_update (EV_P)
724	{	1152	{
725	int i;	1153	int i;
726		1154
727	#if EV_USE_MONOTONIC	1155	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	1156	if (expect_true (have_monotonic))
729	{	1157	{
730	if (time_update_monotonic ())	1158	if (time_update_monotonic (EV_A))
731	{	1159	{
732	ev_tstamp odiff = diff;	1160	ev_tstamp odiff = rtmn_diff;
733		1161
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1162	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	1163	{
736	diff = ev_now - now;	1164	rtmn_diff = ev_rt_now - mn_now;
737		1165
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1166	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	1167	return; /* all is well */
740		1168
741	ev_now = ev_time ();	1169	ev_rt_now = ev_time ();
742	now = get_clock ();	1170	mn_now = get_clock ();
743	now_floor = now;	1171	now_floor = mn_now;
744	}	1172	}
745		1173
		1174	# if EV_PERIODICS
746	periodics_reschedule (diff - odiff);	1175	periodics_reschedule (EV_A);
		1176	# endif
747	/* no timer adjustment, as the monotonic clock doesn't jump */	1177	/* no timer adjustment, as the monotonic clock doesn't jump */
		1178	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	1179	}
749	}	1180	}
750	else	1181	else
751	#endif	1182	#endif
752	{	1183	{
753	ev_now = ev_time ();	1184	ev_rt_now = ev_time ();
754		1185
755	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1186	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	1187	{
		1188	#if EV_PERIODICS
757	periodics_reschedule (ev_now - now);	1189	periodics_reschedule (EV_A);
		1190	#endif
758		1191
759	/* adjust timers. this is easy, as the offset is the same for all */	1192	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	1193	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	1194	((WT)timers [i])->at += ev_rt_now - mn_now;
762	}	1195	}
763		1196
764	now = ev_now;	1197	mn_now = ev_rt_now;
765	}	1198	}
766	}	1199	}
767		1200
768	int ev_loop_done;	1201	void
		1202	ev_ref (EV_P)
		1203	{
		1204	++activecnt;
		1205	}
769		1206
		1207	void
		1208	ev_unref (EV_P)
		1209	{
		1210	--activecnt;
		1211	}
		1212
		1213	static int loop_done;
		1214
		1215	void
770	void ev_loop (int flags)	1216	ev_loop (EV_P_ int flags)
771	{	1217	{
772	double block;	1218	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1219	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
774		1220
775	do	1221	while (activecnt)
776	{	1222	{
777	/* queue check watchers (and execute them) */	1223	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	1224	if (expect_false (preparecnt))
779	{	1225	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1226	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	1227	call_pending (EV_A);
782	}	1228	}
783		1229
		1230	/* we might have forked, so reify kernel state if necessary */
		1231	if (expect_false (postfork))
		1232	loop_fork (EV_A);
		1233
784	/* update fd-related kernel structures */	1234	/* update fd-related kernel structures */
785	fd_reify ();	1235	fd_reify (EV_A);
786		1236
787	/* calculate blocking time */	1237	/* calculate blocking time */
788		1238
789	/* we only need this for !monotonic clockor timers, but as we basically	1239	/* we only need this for !monotonic clock or timers, but as we basically
790	always have timers, we just calculate it always */	1240	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1241	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1242	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1243	time_update_monotonic (EV_A);
794	else	1244	else
795	#endif	1245	#endif
796	{	1246	{
797	ev_now = ev_time ();	1247	ev_rt_now = ev_time ();
798	now = ev_now;	1248	mn_now = ev_rt_now;
799	}	1249	}
800		1250
801	if (flags & EVLOOP_NONBLOCK || idlecnt)	1251	if (flags & EVLOOP_NONBLOCK || idlecnt)
802	block = 0.;	1252	block = 0.;
803	else	1253	else
804	{	1254	{
805	block = MAX_BLOCKTIME;	1255	block = MAX_BLOCKTIME;
806		1256
807	if (timercnt)	1257	if (timercnt)
808	{	1258	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1259	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1260	if (block > to) block = to;
811	}	1261	}
812		1262
		1263	#if EV_PERIODICS
813	if (periodiccnt)	1264	if (periodiccnt)
814	{	1265	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1266	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
816	if (block > to) block = to;	1267	if (block > to) block = to;
817	}	1268	}
		1269	#endif
818		1270
819	if (block < 0.) block = 0.;	1271	if (expect_false (block < 0.)) block = 0.;
820	}	1272	}
821		1273
822	method_poll (block);	1274	method_poll (EV_A_ block);
823		1275
824	/* update ev_now, do magic */	1276	/* update ev_rt_now, do magic */
825	time_update ();	1277	time_update (EV_A);
826		1278
827	/* queue pending timers and reschedule them */	1279	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1280	timers_reify (EV_A); /* relative timers called last */
		1281	#if EV_PERIODICS
829	periodics_reify (); /* absolute timers called first */	1282	periodics_reify (EV_A); /* absolute timers called first */
		1283	#endif
830		1284
831	/* queue idle watchers unless io or timers are pending */	1285	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1286	if (idlecnt && !any_pending (EV_A))
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1287	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1288
835	/* queue check watchers, to be executed first */	1289	/* queue check watchers, to be executed first */
836	if (checkcnt)	1290	if (expect_false (checkcnt))
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1291	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1292
839	call_pending ();	1293	call_pending (EV_A);
840	}
841	while (!ev_loop_done);
842		1294
		1295	if (expect_false (loop_done))
		1296	break;
		1297	}
		1298
843	if (ev_loop_done != 2)	1299	if (loop_done != 2)
844	ev_loop_done = 0;	1300	loop_done = 0;
		1301	}
		1302
		1303	void
		1304	ev_unloop (EV_P_ int how)
		1305	{
		1306	loop_done = how;
845	}	1307	}
846		1308
847	/*****************************************************************************/	1309	/*****************************************************************************/
848		1310
849	static void	1311	inline void
850	wlist_add (WL *head, WL elem)	1312	wlist_add (WL *head, WL elem)
851	{	1313	{
852	elem->next = *head;	1314	elem->next = *head;
853	*head = elem;	1315	*head = elem;
854	}	1316	}
855		1317
856	static void	1318	inline void
857	wlist_del (WL *head, WL elem)	1319	wlist_del (WL *head, WL elem)
858	{	1320	{
859	while (*head)	1321	while (*head)
860	{	1322	{
861	if (*head == elem)	1323	if (*head == elem)
…		…
866		1328
867	head = &(*head)->next;	1329	head = &(*head)->next;
868	}	1330	}
869	}	1331	}
870		1332
871	static void	1333	inline void
872	ev_clear_pending (W w)	1334	ev_clear_pending (EV_P_ W w)
873	{	1335	{
874	if (w->pending)	1336	if (w->pending)
875	{	1337	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1338	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1339	w->pending = 0;
878	}	1340	}
879	}	1341	}
880		1342
881	static void	1343	inline void
882	ev_start (W w, int active)	1344	ev_start (EV_P_ W w, int active)
883	{	1345	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1346	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1347	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1348
887	w->active = active;	1349	w->active = active;
		1350	ev_ref (EV_A);
888	}	1351	}
889		1352
890	static void	1353	inline void
891	ev_stop (W w)	1354	ev_stop (EV_P_ W w)
892	{	1355	{
		1356	ev_unref (EV_A);
893	w->active = 0;	1357	w->active = 0;
894	}	1358	}
895		1359
896	/*****************************************************************************/	1360	/*****************************************************************************/
897		1361
898	void	1362	void
899	ev_io_start (struct ev_io *w)	1363	ev_io_start (EV_P_ struct ev_io *w)
900	{	1364	{
901	int fd = w->fd;	1365	int fd = w->fd;
902		1366
903	if (ev_is_active (w))	1367	if (expect_false (ev_is_active (w)))
904	return;	1368	return;
905		1369
906	assert (("ev_io_start called with negative fd", fd >= 0));	1370	assert (("ev_io_start called with negative fd", fd >= 0));
907		1371
908	ev_start ((W)w, 1);	1372	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1373	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1374	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1375
912	fd_change (fd);	1376	fd_change (EV_A_ fd);
913	}	1377	}
914		1378
915	void	1379	void
916	ev_io_stop (struct ev_io *w)	1380	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1381	{
918	ev_clear_pending ((W)w);	1382	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1383	if (expect_false (!ev_is_active (w)))
920	return;	1384	return;
921		1385
		1386	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1387
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1388	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1389	ev_stop (EV_A_ (W)w);
924		1390
925	fd_change (w->fd);	1391	fd_change (EV_A_ w->fd);
926	}	1392	}
927		1393
928	void	1394	void
929	ev_timer_start (struct ev_timer *w)	1395	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1396	{
931	if (ev_is_active (w))	1397	if (expect_false (ev_is_active (w)))
932	return;	1398	return;
933		1399
934	w->at += now;	1400	((WT)w)->at += mn_now;
935		1401
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1402	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1403
938	ev_start ((W)w, ++timercnt);	1404	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1405	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
940	timers [timercnt - 1] = w;	1406	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1407	upheap ((WT *)timers, timercnt - 1);
942	}
943		1408
		1409	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1410	}
		1411
944	void	1412	void
945	ev_timer_stop (struct ev_timer *w)	1413	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1414	{
947	ev_clear_pending ((W)w);	1415	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1416	if (expect_false (!ev_is_active (w)))
949	return;	1417	return;
950		1418
		1419	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1420
951	if (w->active < timercnt--)	1421	if (expect_true (((W)w)->active < timercnt--))
952	{	1422	{
953	timers [w->active - 1] = timers [timercnt];	1423	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1424	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1425	}
956		1426
957	w->at = w->repeat;	1427	((WT)w)->at -= mn_now;
958		1428
959	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
960	}	1430	}
961		1431
962	void	1432	void
963	ev_timer_again (struct ev_timer *w)	1433	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1434	{
965	if (ev_is_active (w))	1435	if (ev_is_active (w))
966	{	1436	{
967	if (w->repeat)	1437	if (w->repeat)
968	{	1438	{
969	w->at = now + w->repeat;	1439	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1440	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1441	}
972	else	1442	else
973	ev_timer_stop (w);	1443	ev_timer_stop (EV_A_ w);
974	}	1444	}
975	else if (w->repeat)	1445	else if (w->repeat)
		1446	{
		1447	w->at = w->repeat;
976	ev_timer_start (w);	1448	ev_timer_start (EV_A_ w);
		1449	}
977	}	1450	}
978		1451
		1452	#if EV_PERIODICS
979	void	1453	void
980	ev_periodic_start (struct ev_periodic *w)	1454	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1455	{
982	if (ev_is_active (w))	1456	if (expect_false (ev_is_active (w)))
983	return;	1457	return;
984		1458
		1459	if (w->reschedule_cb)
		1460	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1461	else if (w->interval)
		1462	{
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1463	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1464	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1465	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1466	}
990		1467
991	ev_start ((W)w, ++periodiccnt);	1468	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1469	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
993	periodics [periodiccnt - 1] = w;	1470	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1471	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1472
		1473	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1474	}
		1475
997	void	1476	void
998	ev_periodic_stop (struct ev_periodic *w)	1477	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1478	{
1000	ev_clear_pending ((W)w);	1479	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1480	if (expect_false (!ev_is_active (w)))
1002	return;	1481	return;
1003		1482
		1483	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1484
1004	if (w->active < periodiccnt--)	1485	if (expect_true (((W)w)->active < periodiccnt--))
1005	{	1486	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1487	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1488	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1489	}
1009		1490
1010	ev_stop ((W)w);	1491	ev_stop (EV_A_ (W)w);
1011	}	1492	}
1012		1493
1013	void	1494	void
		1495	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1496	{
		1497	/* TODO: use adjustheap and recalculation */
		1498	ev_periodic_stop (EV_A_ w);
		1499	ev_periodic_start (EV_A_ w);
		1500	}
		1501	#endif
		1502
		1503	void
1014	ev_signal_start (struct ev_signal *w)	1504	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1505	{
1016	if (ev_is_active (w))	1506	if (expect_false (ev_is_active (w)))
1017	return;	1507	return;
1018		1508
		1509	ev_start (EV_A_ (W)w, ++idlecnt);
		1510	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1511	idles [idlecnt - 1] = w;
		1512	}
		1513
		1514	void
		1515	ev_idle_stop (EV_P_ struct ev_idle *w)
		1516	{
		1517	ev_clear_pending (EV_A_ (W)w);
		1518	if (expect_false (!ev_is_active (w)))
		1519	return;
		1520
		1521	idles [((W)w)->active - 1] = idles [--idlecnt];
		1522	ev_stop (EV_A_ (W)w);
		1523	}
		1524
		1525	void
		1526	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1527	{
		1528	if (expect_false (ev_is_active (w)))
		1529	return;
		1530
		1531	ev_start (EV_A_ (W)w, ++preparecnt);
		1532	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1533	prepares [preparecnt - 1] = w;
		1534	}
		1535
		1536	void
		1537	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1538	{
		1539	ev_clear_pending (EV_A_ (W)w);
		1540	if (expect_false (!ev_is_active (w)))
		1541	return;
		1542
		1543	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1544	ev_stop (EV_A_ (W)w);
		1545	}
		1546
		1547	void
		1548	ev_check_start (EV_P_ struct ev_check *w)
		1549	{
		1550	if (expect_false (ev_is_active (w)))
		1551	return;
		1552
		1553	ev_start (EV_A_ (W)w, ++checkcnt);
		1554	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1555	checks [checkcnt - 1] = w;
		1556	}
		1557
		1558	void
		1559	ev_check_stop (EV_P_ struct ev_check *w)
		1560	{
		1561	ev_clear_pending (EV_A_ (W)w);
		1562	if (expect_false (!ev_is_active (w)))
		1563	return;
		1564
		1565	checks [((W)w)->active - 1] = checks [--checkcnt];
		1566	ev_stop (EV_A_ (W)w);
		1567	}
		1568
		1569	#ifndef SA_RESTART
		1570	# define SA_RESTART 0
		1571	#endif
		1572
		1573	void
		1574	ev_signal_start (EV_P_ struct ev_signal *w)
		1575	{
		1576	#if EV_MULTIPLICITY
		1577	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1578	#endif
		1579	if (expect_false (ev_is_active (w)))
		1580	return;
		1581
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1582	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1583
1021	ev_start ((W)w, 1);	1584	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1585	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1586	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1587
1025	if (!w->next)	1588	if (!((WL)w)->next)
1026	{	1589	{
		1590	#if _WIN32
		1591	signal (w->signum, sighandler);
		1592	#else
1027	struct sigaction sa;	1593	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1594	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1595	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1596	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1597	sigaction (w->signum, &sa, 0);
		1598	#endif
1032	}	1599	}
1033	}	1600	}
1034		1601
1035	void	1602	void
1036	ev_signal_stop (struct ev_signal *w)	1603	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1604	{
1038	ev_clear_pending ((W)w);	1605	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1606	if (expect_false (!ev_is_active (w)))
1040	return;	1607	return;
1041		1608
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1609	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1610	ev_stop (EV_A_ (W)w);
1044		1611
1045	if (!signals [w->signum - 1].head)	1612	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1613	signal (w->signum, SIG_DFL);
1047	}	1614	}
1048		1615
1049	void	1616	void
1050	ev_idle_start (struct ev_idle *w)	1617	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1618	{
		1619	#if EV_MULTIPLICITY
		1620	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1621	#endif
1052	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
1053	return;	1623	return;
1054		1624
1055	ev_start ((W)w, ++idlecnt);	1625	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1626	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1627	}
1059		1628
1060	void	1629	void
1061	ev_idle_stop (struct ev_idle *w)	1630	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1631	{
1063	ev_clear_pending ((W)w);	1632	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
1065	return;	1634	return;
1066		1635
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}
1124
1125	void
1126	ev_child_stop (struct ev_child *w)
1127	{
1128	ev_clear_pending ((W)w);
1129	if (ev_is_active (w))
1130	return;
1131
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1636	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1637	ev_stop (EV_A_ (W)w);
1134	}	1638	}
1135		1639
1136	/*****************************************************************************/	1640	/*****************************************************************************/
1137		1641
1138	struct ev_once	1642	struct ev_once
…		…
1142	void (*cb)(int revents, void *arg);	1646	void (*cb)(int revents, void *arg);
1143	void *arg;	1647	void *arg;
1144	};	1648	};
1145		1649
1146	static void	1650	static void
1147	once_cb (struct ev_once *once, int revents)	1651	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1652	{
1149	void (*cb)(int revents, void *arg) = once->cb;	1653	void (*cb)(int revents, void *arg) = once->cb;
1150	void *arg = once->arg;	1654	void *arg = once->arg;
1151		1655
1152	ev_io_stop (&once->io);	1656	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1657	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1658	ev_free (once);
1155		1659
1156	cb (revents, arg);	1660	cb (revents, arg);
1157	}	1661	}
1158		1662
1159	static void	1663	static void
1160	once_cb_io (struct ev_io *w, int revents)	1664	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1665	{
1162	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1666	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1163	}	1667	}
1164		1668
1165	static void	1669	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1670	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1671	{
1168	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1672	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1169	}	1673	}
1170		1674
1171	void	1675	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1676	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1173	{	1677	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1678	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1175		1679
1176	if (!once)	1680	if (expect_false (!once))
		1681	{
1177	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1682	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1178	else	1683	return;
1179	{	1684	}
		1685
1180	once->cb = cb;	1686	once->cb = cb;
1181	once->arg = arg;	1687	once->arg = arg;
1182		1688
1183	ev_watcher_init (&once->io, once_cb_io);	1689	ev_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1690	if (fd >= 0)
1185	{	1691	{
1186	ev_io_set (&once->io, fd, events);	1692	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1693	ev_io_start (EV_A_ &once->io);
1188	}	1694	}
1189		1695
1190	ev_watcher_init (&once->to, once_cb_to);	1696	ev_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1697	if (timeout >= 0.)
1192	{	1698	{
1193	ev_timer_set (&once->to, timeout, 0.);	1699	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1700	ev_timer_start (EV_A_ &once->to);
1195	}
1196	}
1197	}
1198
1199	/*****************************************************************************/
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{	1701	}
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif
1255
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}	1702	}
1276		1703
		1704	#ifdef __cplusplus
		1705	}
1277	#endif	1706	#endif
1278		1707
1279
1280
1281

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