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Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	107	#include <time.h>
50		108
		109	#include <signal.h>
		110
		111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.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
		120	# endif
		121	#endif
		122
51	/**/	123	/**/
52		124
53	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
54	# 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
55	#endif	131	#endif
56		132
57	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
59	#endif	135	#endif
60		136
61	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
62	# 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
63	#endif	143	#endif
64		144
65	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
67	#endif	147	#endif
68		148
		149	#ifndef EV_USE_KQUEUE
		150	# define EV_USE_KQUEUE 0
		151	#endif
		152
69	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
70	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
71	#endif	155	#endif
72		156
73	/**/	157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
74		164
75	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
76	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
77	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
78	#endif	168	#endif
…		…
80	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
83	#endif	173	#endif
84		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
85	/**/	179	/**/
86		180
87	#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) */
88	#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) */
89	#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 */
90	/*#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 */
91		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
92	#include "ev.h"	189	# include "ev.h"
		190	#endif
93		191
94	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	194	# define inline static inline
97	#else	195	#else
98	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
99	# define inline static	197	# define inline static
100	#endif	198	#endif
101		199
…		…
103	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
104		202
105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
107		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
108	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
111		212
112	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
113	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
114	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
115		306
116	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
117		308
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		310
122	/*****************************************************************************/	311	/*****************************************************************************/
123		312
124	ev_tstamp	313	ev_tstamp
125	ev_time (void)	314	ev_time (void)
…		…
133	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	324	#endif
136	}	325	}
137		326
138	static ev_tstamp	327	inline ev_tstamp
139	get_clock (void)	328	get_clock (void)
140	{	329	{
141	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	331	if (expect_true (have_monotonic))
143	{	332	{
…		…
148	#endif	337	#endif
149		338
150	return ev_time ();	339	return ev_time ();
151	}	340	}
152		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
154		351
155	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
157	{ \	354	{ \
158	int newcnt = cur; \	355	int newcnt = cur; \
159	do \	356	do \
160	{ \	357	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
162	} \	359	} \
163	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
164	\	361	\
165	base = realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
166	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	364	cur = newcnt; \
168	}	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;
169		377
170	/*****************************************************************************/	378	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		379
182	static void	380	static void
183	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
184	{	382	{
185	while (count--)	383	while (count--)
…		…
190		388
191	++base;	389	++base;
192	}	390	}
193	}	391	}
194		392
195	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
196	{	395	{
197	W w;	396	W w_ = (W)w;
198	int events;
199	} ANPENDING;
200		397
201	static ANPENDING *pendings [NUMPRI];	398	if (expect_false (w_->pending))
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void
205	event (W w, int events)
206	{
207	if (w->pending)
208	{	399	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
210	return;	401	return;
211	}	402	}
212		403
213	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
214	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);
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
217	}	408	}
218		409
219	static void	410	static void
220	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	412	{
222	int i;	413	int i;
223		414
224	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
226	}	417	}
227		418
228	static void	419	inline void
229	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
230	{	421	{
231	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	423	struct ev_io *w;
233		424
234	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	426	{
236	int ev = w->events & events;	427	int ev = w->events & revents;
237		428
238	if (ev)	429	if (ev)
239	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
240	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
241	}	438	}
242		439
243	/*****************************************************************************/	440	/*****************************************************************************/
244		441
245	static int *fdchanges;	442	inline void
246	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
247
248	static void
249	fd_reify (void)
250	{	444	{
251	int i;	445	int i;
252		446
253	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
254	{	448	{
…		…
256	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	451	struct ev_io *w;
258		452
259	int events = 0;	453	int events = 0;
260		454
261	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	456	events |= w->events;
263		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
264	anfd->reify = 0;	467	anfd->reify = 0;
265		468
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	470	anfd->events = events;
270	}
271	}	471	}
272		472
273	fdchangecnt = 0;	473	fdchangecnt = 0;
274	}	474	}
275		475
276	static void	476	static void
277	fd_change (int fd)	477	fd_change (EV_P_ int fd)
278	{	478	{
279	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
280	return;	480	return;
281		481
282	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
283		483
284	++fdchangecnt;	484	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
286	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
287	}	487	}
288		488
289	static void	489	static void
290	fd_kill (int fd)	490	fd_kill (EV_P_ int fd)
291	{	491	{
292	struct ev_io *w;	492	struct ev_io *w;
293		493
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
296	{	495	{
297	ev_io_stop (w);	496	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	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
300	}	509	}
301		510
302	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
303	static void	512	static void
304	fd_ebadf (void)	513	fd_ebadf (EV_P)
305	{	514	{
306	int fd;	515	int fd;
307		516
308	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	518	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
311	fd_kill (fd);	520	fd_kill (EV_A_ fd);
312	}	521	}
313		522
314	/* 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 */
315	static void	524	static void
316	fd_enomem (void)	525	fd_enomem (EV_P)
317	{	526	{
318	int fd = anfdmax;	527	int fd;
319		528
320	while (fd--)	529	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	530	if (anfds [fd].events)
322	{	531	{
323	close (fd);
324	fd_kill (fd);	532	fd_kill (EV_A_ fd);
325	return;	533	return;
326	}	534	}
327	}	535	}
328		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
329	/*****************************************************************************/	552	/*****************************************************************************/
330		553
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	554	static void
338	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
339	{	556	{
340	WT w = timers [k];	557	WT w = heap [k];
341		558
342	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
343	{	560	{
344	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
346	k >>= 1;	563	k >>= 1;
347	}	564	}
348		565
349	timers [k] = w;	566	heap [k] = w;
350	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
351		568
352	}	569	}
353		570
354	static void	571	static void
355	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
356	{	573	{
357	WT w = timers [k];	574	WT w = heap [k];
358		575
359	while (k < (N >> 1))	576	while (k < (N >> 1))
360	{	577	{
361	int j = k << 1;	578	int j = k << 1;
362		579
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	581	++j;
365		582
366	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
367	break;	584	break;
368		585
369	timers [k] = timers [j];	586	heap [k] = heap [j];
370	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
371	k = j;	588	k = j;
372	}	589	}
373		590
374	timers [k] = w;	591	heap [k] = w;
375	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);
376	}	600	}
377		601
378	/*****************************************************************************/	602	/*****************************************************************************/
379		603
380	typedef struct	604	typedef struct
381	{	605	{
382	struct ev_signal *head;	606	WL head;
383	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
384	} ANSIG;	608	} ANSIG;
385		609
386	static ANSIG *signals;	610	static ANSIG *signals;
387	static int signalmax;	611	static int signalmax;
…		…
403	}	627	}
404		628
405	static void	629	static void
406	sighandler (int signum)	630	sighandler (int signum)
407	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
408	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
409		637
410	if (!gotsig)	638	if (!gotsig)
411	{	639	{
		640	int old_errno = errno;
412	gotsig = 1;	641	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
414	}	644	}
415	}	645	}
416		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
417	static void	667	static void
418	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	669	{
420	struct ev_signal *w;
421	int signum;	670	int signum;
422		671
423	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	673	gotsig = 0;
425		674
426	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
427	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
428	{	677	ev_feed_signal_event (EV_A_ signum + 1);
429	signals [signum].gotsig = 0;
430
431	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);
433	}
434	}	678	}
435		679
436	static void	680	static void
437	siginit (void)	681	fd_intern (int fd)
438	{	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	fcntl (fd, F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441
442	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	689	#endif
		690	}
		691
		692	static void
		693	siginit (EV_P)
		694	{
		695	fd_intern (sigpipe [0]);
		696	fd_intern (sigpipe [1]);
445		697
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	701	}
449		702
450	/*****************************************************************************/	703	/*****************************************************************************/
451		704
452	static struct ev_idle **idles;
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
464	static struct ev_signal childev;	709	static struct ev_signal childev;
465		710
466	#ifndef WCONTINUED	711	#ifndef WCONTINUED
467	# define WCONTINUED 0	712	# define WCONTINUED 0
468	#endif	713	#endif
469		714
470	static void	715	static void
471	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	717	{
473	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	{
474	int pid, status;	733	int pid, status;
475		734
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
478	if (w->pid == pid || !w->pid)	737	/* make sure we are called again until all childs have been reaped */
479	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	739
481	event ((W)w, EV_CHILD);	740	child_reap (EV_A_ sw, pid, pid, status);
482	}	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		742	}
483	}	743	}
		744
		745	#endif
484		746
485	/*****************************************************************************/	747	/*****************************************************************************/
486		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
		752	#if EV_USE_KQUEUE
		753	# include "ev_kqueue.c"
		754	#endif
487	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	756	# include "ev_epoll.c"
489	#endif	757	#endif
490	#if EV_USE_POLL	758	#if EV_USE_POLL
491	# include "ev_poll.c"	759	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	772	ev_version_minor (void)
505	{	773	{
506	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
507	}	775	}
508		776
509	/* 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 */
510	static int	778	static int
511	enable_secure ()	779	enable_secure (void)
512	{	780	{
		781	#ifdef _WIN32
		782	return 0;
		783	#else
513	return getuid () != geteuid ()	784	return getuid () != geteuid ()
514	|| getgid () != getegid ();	785	|| getgid () != getegid ();
		786	#endif
515	}	787	}
516		788
517	int ev_init (int methods)	789	unsigned int
		790	ev_method (EV_P)
518	{	791	{
		792	return method;
		793	}
		794
		795	static void
		796	loop_init (EV_P_ unsigned int flags)
		797	{
519	if (!ev_method)	798	if (!method)
520	{	799	{
521	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
522	{	801	{
523	struct timespec ts;	802	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	804	have_monotonic = 1;
526	}	805	}
527	#endif	806	#endif
528		807
529	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
530	now = get_clock ();	809	mn_now = get_clock ();
531	now_floor = now;	810	now_floor = mn_now;
532	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
533		812
534	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
535	return 0;
536
537	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	814	flags = atoi (getenv ("LIBEV_FLAGS"));
540	else
541	methods = EVMETHOD_ANY;
542		815
		816	if (!(flags & 0x0000ffff))
		817	flags |= 0x0000ffff;
		818
543	ev_method = 0;	819	method = 0;
		820	#if EV_USE_PORT
		821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		825	#endif
544	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
546	#endif	828	#endif
547	#if EV_USE_POLL	829	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
549	#endif	831	#endif
550	#if EV_USE_SELECT	832	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
552	#endif	834	#endif
553		835
		836	ev_init (&sigev, sigcb);
		837	ev_set_priority (&sigev, EV_MAXPRI);
		838	}
		839	}
		840
		841	static void
		842	loop_destroy (EV_P)
		843	{
		844	int i;
		845
		846	#if EV_USE_PORT
		847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		848	#endif
		849	#if EV_USE_KQUEUE
		850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		851	#endif
		852	#if EV_USE_EPOLL
		853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		854	#endif
		855	#if EV_USE_POLL
		856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		857	#endif
		858	#if EV_USE_SELECT
		859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		860	#endif
		861
		862	for (i = NUMPRI; i--; )
		863	array_free (pending, [i]);
		864
		865	/* have to use the microsoft-never-gets-it-right macro */
		866	array_free (fdchange, EMPTY0);
		867	array_free (timer, EMPTY0);
		868	#if EV_PERIODICS
		869	array_free (periodic, EMPTY0);
		870	#endif
		871	array_free (idle, EMPTY0);
		872	array_free (prepare, EMPTY0);
		873	array_free (check, EMPTY0);
		874
		875	method = 0;
		876	}
		877
		878	static void
		879	loop_fork (EV_P)
		880	{
		881	#if EV_USE_PORT
		882	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		883	#endif
		884	#if EV_USE_KQUEUE
		885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		886	#endif
		887	#if EV_USE_EPOLL
		888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		889	#endif
		890
		891	if (ev_is_active (&sigev))
		892	{
		893	/* default loop */
		894
		895	ev_ref (EV_A);
		896	ev_io_stop (EV_A_ &sigev);
		897	close (sigpipe [0]);
		898	close (sigpipe [1]);
		899
		900	while (pipe (sigpipe))
		901	syserr ("(libev) error creating pipe");
		902
		903	siginit (EV_A);
		904	}
		905
		906	postfork = 0;
		907	}
		908
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *
		911	ev_loop_new (unsigned int flags)
		912	{
		913	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		914
		915	memset (loop, 0, sizeof (struct ev_loop));
		916
		917	loop_init (EV_A_ flags);
		918
		919	if (ev_method (EV_A))
		920	return loop;
		921
		922	return 0;
		923	}
		924
		925	void
		926	ev_loop_destroy (EV_P)
		927	{
		928	loop_destroy (EV_A);
		929	ev_free (loop);
		930	}
		931
		932	void
		933	ev_loop_fork (EV_P)
		934	{
		935	postfork = 1;
		936	}
		937
		938	#endif
		939
		940	#if EV_MULTIPLICITY
		941	struct ev_loop *
		942	ev_default_loop_init (unsigned int flags)
		943	#else
		944	int
		945	ev_default_loop (unsigned int flags)
		946	#endif
		947	{
		948	if (sigpipe [0] == sigpipe [1])
		949	if (pipe (sigpipe))
		950	return 0;
		951
		952	if (!ev_default_loop_ptr)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		956	#else
		957	ev_default_loop_ptr = 1;
		958	#endif
		959
		960	loop_init (EV_A_ flags);
		961
554	if (ev_method)	962	if (ev_method (EV_A))
555	{	963	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	964	siginit (EV_A);
558		965
		966	#ifndef _WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	967	ev_signal_init (&childev, childcb, SIGCHLD);
		968	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	969	ev_signal_start (EV_A_ &childev);
		970	ev_unref (EV_A); /* child watcher should not keep loop alive */
		971	#endif
561	}	972	}
		973	else
		974	ev_default_loop_ptr = 0;
562	}	975	}
563		976
564	return ev_method;	977	return ev_default_loop_ptr;
		978	}
		979
		980	void
		981	ev_default_destroy (void)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr;
		985	#endif
		986
		987	#ifndef _WIN32
		988	ev_ref (EV_A); /* child watcher */
		989	ev_signal_stop (EV_A_ &childev);
		990	#endif
		991
		992	ev_ref (EV_A); /* signal watcher */
		993	ev_io_stop (EV_A_ &sigev);
		994
		995	close (sigpipe [0]); sigpipe [0] = 0;
		996	close (sigpipe [1]); sigpipe [1] = 0;
		997
		998	loop_destroy (EV_A);
		999	}
		1000
		1001	void
		1002	ev_default_fork (void)
		1003	{
		1004	#if EV_MULTIPLICITY
		1005	struct ev_loop *loop = ev_default_loop_ptr;
		1006	#endif
		1007
		1008	if (method)
		1009	postfork = 1;
565	}	1010	}
566		1011
567	/*****************************************************************************/	1012	/*****************************************************************************/
568		1013
569	void
570	ev_fork_prepare (void)
571	{
572	/* nop */
573	}
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif
588
589	ev_io_stop (&sigev);
590	close (sigpipe [0]);
591	close (sigpipe [1]);
592	pipe (sigpipe);
593	siginit ();
594	}
595
596	/*****************************************************************************/
597
598	static void	1014	static int
		1015	any_pending (EV_P)
		1016	{
		1017	int pri;
		1018
		1019	for (pri = NUMPRI; pri--; )
		1020	if (pendingcnt [pri])
		1021	return 1;
		1022
		1023	return 0;
		1024	}
		1025
		1026	inline void
599	call_pending (void)	1027	call_pending (EV_P)
600	{	1028	{
601	int pri;	1029	int pri;
602		1030
603	for (pri = NUMPRI; pri--; )	1031	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	1032	while (pendingcnt [pri])
605	{	1033	{
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		1035
608	if (p->w)	1036	if (expect_true (p->w))
609	{	1037	{
610	p->w->pending = 0;	1038	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	1039	EV_CB_INVOKE (p->w, p->events);
612	}	1040	}
613	}	1041	}
614	}	1042	}
615		1043
616	static void	1044	inline void
617	timers_reify (void)	1045	timers_reify (EV_P)
618	{	1046	{
619	while (timercnt && timers [0]->at <= now)	1047	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	1048	{
621	struct ev_timer *w = timers [0];	1049	struct ev_timer *w = timers [0];
		1050
		1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		1052
623	/* first reschedule or stop timer */	1053	/* first reschedule or stop timer */
624	if (w->repeat)	1054	if (w->repeat)
625	{	1055	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1057
627	w->at = now + w->repeat;	1058	((WT)w)->at += w->repeat;
		1059	if (((WT)w)->at < mn_now)
		1060	((WT)w)->at = mn_now;
		1061
628	downheap ((WT *)timers, timercnt, 0);	1062	downheap ((WT *)timers, timercnt, 0);
629	}	1063	}
630	else	1064	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		1066
633	event ((W)w, EV_TIMEOUT);	1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
634	}	1068	}
635	}	1069	}
636		1070
637	static void	1071	#if EV_PERIODICS
		1072	inline void
638	periodics_reify (void)	1073	periodics_reify (EV_P)
639	{	1074	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
641	{	1076	{
642	struct ev_periodic *w = periodics [0];	1077	struct ev_periodic *w = periodics [0];
643		1078
		1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1080
644	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
645	if (w->interval)	1082	if (w->reschedule_cb)
646	{	1083	{
		1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1086	downheap ((WT *)periodics, periodiccnt, 0);
		1087	}
		1088	else if (w->interval)
		1089	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1090	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1091	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	1092	downheap ((WT *)periodics, periodiccnt, 0);
650	}	1093	}
651	else	1094	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1096
654	event ((W)w, EV_PERIODIC);	1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
655	}	1098	}
656	}	1099	}
657		1100
658	static void	1101	static void
659	periodics_reschedule (ev_tstamp diff)	1102	periodics_reschedule (EV_P)
660	{	1103	{
661	int i;	1104	int i;
662		1105
663	/* adjust periodics after time jump */	1106	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	1107	for (i = 0; i < periodiccnt; ++i)
665	{	1108	{
666	struct ev_periodic *w = periodics [i];	1109	struct ev_periodic *w = periodics [i];
667		1110
		1111	if (w->reschedule_cb)
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
668	if (w->interval)	1113	else if (w->interval)
669	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
671
672	if (fabs (diff) >= 1e-4)
673	{
674	ev_periodic_stop (w);
675	ev_periodic_start (w);
676
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}
679	}
680	}	1115	}
681	}
682		1116
683	static int	1117	/* now rebuild the heap */
		1118	for (i = periodiccnt >> 1; i--; )
		1119	downheap ((WT *)periodics, periodiccnt, i);
		1120	}
		1121	#endif
		1122
		1123	inline int
684	time_update_monotonic (void)	1124	time_update_monotonic (EV_P)
685	{	1125	{
686	now = get_clock ();	1126	mn_now = get_clock ();
687		1127
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	1129	{
690	ev_now = now + diff;	1130	ev_rt_now = rtmn_diff + mn_now;
691	return 0;	1131	return 0;
692	}	1132	}
693	else	1133	else
694	{	1134	{
695	now_floor = now;	1135	now_floor = mn_now;
696	ev_now = ev_time ();	1136	ev_rt_now = ev_time ();
697	return 1;	1137	return 1;
698	}	1138	}
699	}	1139	}
700		1140
701	static void	1141	inline void
702	time_update (void)	1142	time_update (EV_P)
703	{	1143	{
704	int i;	1144	int i;
705		1145
706	#if EV_USE_MONOTONIC	1146	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	1147	if (expect_true (have_monotonic))
708	{	1148	{
709	if (time_update_monotonic ())	1149	if (time_update_monotonic (EV_A))
710	{	1150	{
711	ev_tstamp odiff = diff;	1151	ev_tstamp odiff = rtmn_diff;
712		1152
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	1154	{
715	diff = ev_now - now;	1155	rtmn_diff = ev_rt_now - mn_now;
716		1156
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1158	return; /* all is well */
719		1159
720	ev_now = ev_time ();	1160	ev_rt_now = ev_time ();
721	now = get_clock ();	1161	mn_now = get_clock ();
722	now_floor = now;	1162	now_floor = mn_now;
723	}	1163	}
724		1164
		1165	# if EV_PERIODICS
725	periodics_reschedule (diff - odiff);	1166	periodics_reschedule (EV_A);
		1167	# endif
726	/* no timer adjustment, as the monotonic clock doesn't jump */	1168	/* no timer adjustment, as the monotonic clock doesn't jump */
		1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	1170	}
728	}	1171	}
729	else	1172	else
730	#endif	1173	#endif
731	{	1174	{
732	ev_now = ev_time ();	1175	ev_rt_now = ev_time ();
733		1176
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1177	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1178	{
		1179	#if EV_PERIODICS
736	periodics_reschedule (ev_now - now);	1180	periodics_reschedule (EV_A);
		1181	#endif
737		1182
738	/* adjust timers. this is easy, as the offset is the same for all */	1183	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1184	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1185	((WT)timers [i])->at += ev_rt_now - mn_now;
741	}	1186	}
742		1187
743	now = ev_now;	1188	mn_now = ev_rt_now;
744	}	1189	}
745	}	1190	}
746		1191
747	int ev_loop_done;	1192	void
		1193	ev_ref (EV_P)
		1194	{
		1195	++activecnt;
		1196	}
748		1197
		1198	void
		1199	ev_unref (EV_P)
		1200	{
		1201	--activecnt;
		1202	}
		1203
		1204	static int loop_done;
		1205
		1206	void
749	void ev_loop (int flags)	1207	ev_loop (EV_P_ int flags)
750	{	1208	{
751	double block;	1209	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		1211
754	do	1212	while (activecnt)
755	{	1213	{
756	/* queue check watchers (and execute them) */	1214	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1215	if (expect_false (preparecnt))
758	{	1216	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1218	call_pending (EV_A);
761	}	1219	}
762		1220
		1221	/* we might have forked, so reify kernel state if necessary */
		1222	if (expect_false (postfork))
		1223	loop_fork (EV_A);
		1224
763	/* update fd-related kernel structures */	1225	/* update fd-related kernel structures */
764	fd_reify ();	1226	fd_reify (EV_A);
765		1227
766	/* calculate blocking time */	1228	/* calculate blocking time */
767		1229
768	/* we only need this for !monotonic clockor timers, but as we basically	1230	/* we only need this for !monotonic clock or timers, but as we basically
769	always have timers, we just calculate it always */	1231	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1232	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1233	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1234	time_update_monotonic (EV_A);
773	else	1235	else
774	#endif	1236	#endif
775	{	1237	{
776	ev_now = ev_time ();	1238	ev_rt_now = ev_time ();
777	now = ev_now;	1239	mn_now = ev_rt_now;
778	}	1240	}
779		1241
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	1243	block = 0.;
782	else	1244	else
783	{	1245	{
784	block = MAX_BLOCKTIME;	1246	block = MAX_BLOCKTIME;
785		1247
786	if (timercnt)	1248	if (timercnt)
787	{	1249	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1251	if (block > to) block = to;
790	}	1252	}
791		1253
		1254	#if EV_PERIODICS
792	if (periodiccnt)	1255	if (periodiccnt)
793	{	1256	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
795	if (block > to) block = to;	1258	if (block > to) block = to;
796	}	1259	}
		1260	#endif
797		1261
798	if (block < 0.) block = 0.;	1262	if (expect_false (block < 0.)) block = 0.;
799	}	1263	}
800		1264
801	method_poll (block);	1265	method_poll (EV_A_ block);
802		1266
803	/* update ev_now, do magic */	1267	/* update ev_rt_now, do magic */
804	time_update ();	1268	time_update (EV_A);
805		1269
806	/* queue pending timers and reschedule them */	1270	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1271	timers_reify (EV_A); /* relative timers called last */
		1272	#if EV_PERIODICS
808	periodics_reify (); /* absolute timers called first */	1273	periodics_reify (EV_A); /* absolute timers called first */
		1274	#endif
809		1275
810	/* queue idle watchers unless io or timers are pending */	1276	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1277	if (idlecnt && !any_pending (EV_A))
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1279
814	/* queue check watchers, to be executed first */	1280	/* queue check watchers, to be executed first */
815	if (checkcnt)	1281	if (expect_false (checkcnt))
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1283
818	call_pending ();	1284	call_pending (EV_A);
819	}
820	while (!ev_loop_done);
821		1285
		1286	if (expect_false (loop_done))
		1287	break;
		1288	}
		1289
822	if (ev_loop_done != 2)	1290	if (loop_done != 2)
823	ev_loop_done = 0;	1291	loop_done = 0;
		1292	}
		1293
		1294	void
		1295	ev_unloop (EV_P_ int how)
		1296	{
		1297	loop_done = how;
824	}	1298	}
825		1299
826	/*****************************************************************************/	1300	/*****************************************************************************/
827		1301
828	static void	1302	inline void
829	wlist_add (WL *head, WL elem)	1303	wlist_add (WL *head, WL elem)
830	{	1304	{
831	elem->next = *head;	1305	elem->next = *head;
832	*head = elem;	1306	*head = elem;
833	}	1307	}
834		1308
835	static void	1309	inline void
836	wlist_del (WL *head, WL elem)	1310	wlist_del (WL *head, WL elem)
837	{	1311	{
838	while (*head)	1312	while (*head)
839	{	1313	{
840	if (*head == elem)	1314	if (*head == elem)
…		…
845		1319
846	head = &(*head)->next;	1320	head = &(*head)->next;
847	}	1321	}
848	}	1322	}
849		1323
850	static void	1324	inline void
851	ev_clear_pending (W w)	1325	ev_clear_pending (EV_P_ W w)
852	{	1326	{
853	if (w->pending)	1327	if (w->pending)
854	{	1328	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1330	w->pending = 0;
857	}	1331	}
858	}	1332	}
859		1333
860	static void	1334	inline void
861	ev_start (W w, int active)	1335	ev_start (EV_P_ W w, int active)
862	{	1336	{
		1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1339
863	w->active = active;	1340	w->active = active;
		1341	ev_ref (EV_A);
864	}	1342	}
865		1343
866	static void	1344	inline void
867	ev_stop (W w)	1345	ev_stop (EV_P_ W w)
868	{	1346	{
		1347	ev_unref (EV_A);
869	w->active = 0;	1348	w->active = 0;
870	}	1349	}
871		1350
872	/*****************************************************************************/	1351	/*****************************************************************************/
873		1352
874	void	1353	void
875	ev_io_start (struct ev_io *w)	1354	ev_io_start (EV_P_ struct ev_io *w)
876	{	1355	{
877	int fd = w->fd;	1356	int fd = w->fd;
878		1357
879	if (ev_is_active (w))	1358	if (expect_false (ev_is_active (w)))
880	return;	1359	return;
881		1360
882	assert (("ev_io_start called with negative fd", fd >= 0));	1361	assert (("ev_io_start called with negative fd", fd >= 0));
883		1362
884	ev_start ((W)w, 1);	1363	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1366
888	fd_change (fd);	1367	fd_change (EV_A_ fd);
889	}	1368	}
890		1369
891	void	1370	void
892	ev_io_stop (struct ev_io *w)	1371	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1372	{
894	ev_clear_pending ((W)w);	1373	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1374	if (expect_false (!ev_is_active (w)))
896	return;	1375	return;
		1376
		1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
897		1378
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
900		1381
901	fd_change (w->fd);	1382	fd_change (EV_A_ w->fd);
902	}	1383	}
903		1384
904	void	1385	void
905	ev_timer_start (struct ev_timer *w)	1386	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1387	{
907	if (ev_is_active (w))	1388	if (expect_false (ev_is_active (w)))
908	return;	1389	return;
909		1390
910	w->at += now;	1391	((WT)w)->at += mn_now;
911		1392
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1394
914	ev_start ((W)w, ++timercnt);	1395	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
916	timers [timercnt - 1] = w;	1397	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1398	upheap ((WT *)timers, timercnt - 1);
918	}
919		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401	}
		1402
920	void	1403	void
921	ev_timer_stop (struct ev_timer *w)	1404	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1405	{
923	ev_clear_pending ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1407	if (expect_false (!ev_is_active (w)))
925	return;	1408	return;
926		1409
		1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1411
927	if (w->active < timercnt--)	1412	if (expect_true (((W)w)->active < timercnt--))
928	{	1413	{
929	timers [w->active - 1] = timers [timercnt];	1414	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1416	}
932		1417
933	w->at = w->repeat;	1418	((WT)w)->at -= mn_now;
934		1419
935	ev_stop ((W)w);	1420	ev_stop (EV_A_ (W)w);
936	}	1421	}
937		1422
938	void	1423	void
939	ev_timer_again (struct ev_timer *w)	1424	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1425	{
941	if (ev_is_active (w))	1426	if (ev_is_active (w))
942	{	1427	{
943	if (w->repeat)	1428	if (w->repeat)
944	{	1429	{
945	w->at = now + w->repeat;	1430	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1432	}
948	else	1433	else
949	ev_timer_stop (w);	1434	ev_timer_stop (EV_A_ w);
950	}	1435	}
951	else if (w->repeat)	1436	else if (w->repeat)
		1437	{
		1438	w->at = w->repeat;
952	ev_timer_start (w);	1439	ev_timer_start (EV_A_ w);
		1440	}
953	}	1441	}
954		1442
		1443	#if EV_PERIODICS
955	void	1444	void
956	ev_periodic_start (struct ev_periodic *w)	1445	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1446	{
958	if (ev_is_active (w))	1447	if (expect_false (ev_is_active (w)))
959	return;	1448	return;
960		1449
		1450	if (w->reschedule_cb)
		1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1452	else if (w->interval)
		1453	{
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1454	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1455	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1457	}
966		1458
967	ev_start ((W)w, ++periodiccnt);	1459	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
969	periodics [periodiccnt - 1] = w;	1461	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1462	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465	}
		1466
973	void	1467	void
974	ev_periodic_stop (struct ev_periodic *w)	1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1469	{
976	ev_clear_pending ((W)w);	1470	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1471	if (expect_false (!ev_is_active (w)))
978	return;	1472	return;
979		1473
		1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1475
980	if (w->active < periodiccnt--)	1476	if (expect_true (((W)w)->active < periodiccnt--))
981	{	1477	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1480	}
985		1481
986	ev_stop ((W)w);	1482	ev_stop (EV_A_ (W)w);
987	}	1483	}
988		1484
989	void	1485	void
		1486	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1487	{
		1488	/* TODO: use adjustheap and recalculation */
		1489	ev_periodic_stop (EV_A_ w);
		1490	ev_periodic_start (EV_A_ w);
		1491	}
		1492	#endif
		1493
		1494	void
		1495	ev_idle_start (EV_P_ struct ev_idle *w)
		1496	{
		1497	if (expect_false (ev_is_active (w)))
		1498	return;
		1499
		1500	ev_start (EV_A_ (W)w, ++idlecnt);
		1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1502	idles [idlecnt - 1] = w;
		1503	}
		1504
		1505	void
		1506	ev_idle_stop (EV_P_ struct ev_idle *w)
		1507	{
		1508	ev_clear_pending (EV_A_ (W)w);
		1509	if (expect_false (!ev_is_active (w)))
		1510	return;
		1511
		1512	idles [((W)w)->active - 1] = idles [--idlecnt];
		1513	ev_stop (EV_A_ (W)w);
		1514	}
		1515
		1516	void
		1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1518	{
		1519	if (expect_false (ev_is_active (w)))
		1520	return;
		1521
		1522	ev_start (EV_A_ (W)w, ++preparecnt);
		1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1524	prepares [preparecnt - 1] = w;
		1525	}
		1526
		1527	void
		1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1529	{
		1530	ev_clear_pending (EV_A_ (W)w);
		1531	if (expect_false (!ev_is_active (w)))
		1532	return;
		1533
		1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1535	ev_stop (EV_A_ (W)w);
		1536	}
		1537
		1538	void
		1539	ev_check_start (EV_P_ struct ev_check *w)
		1540	{
		1541	if (expect_false (ev_is_active (w)))
		1542	return;
		1543
		1544	ev_start (EV_A_ (W)w, ++checkcnt);
		1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1546	checks [checkcnt - 1] = w;
		1547	}
		1548
		1549	void
		1550	ev_check_stop (EV_P_ struct ev_check *w)
		1551	{
		1552	ev_clear_pending (EV_A_ (W)w);
		1553	if (expect_false (!ev_is_active (w)))
		1554	return;
		1555
		1556	checks [((W)w)->active - 1] = checks [--checkcnt];
		1557	ev_stop (EV_A_ (W)w);
		1558	}
		1559
		1560	#ifndef SA_RESTART
		1561	# define SA_RESTART 0
		1562	#endif
		1563
		1564	void
990	ev_signal_start (struct ev_signal *w)	1565	ev_signal_start (EV_P_ struct ev_signal *w)
991	{	1566	{
		1567	#if EV_MULTIPLICITY
		1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1569	#endif
992	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
993	return;	1571	return;
994		1572
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1574
997	ev_start ((W)w, 1);	1575	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1576	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1577	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1578
1001	if (!w->next)	1579	if (!((WL)w)->next)
1002	{	1580	{
		1581	#if _WIN32
		1582	signal (w->signum, sighandler);
		1583	#else
1003	struct sigaction sa;	1584	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1585	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1586	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1587	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1588	sigaction (w->signum, &sa, 0);
		1589	#endif
1008	}	1590	}
1009	}	1591	}
1010		1592
1011	void	1593	void
1012	ev_signal_stop (struct ev_signal *w)	1594	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1595	{
1014	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1016	return;	1598	return;
1017		1599
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
1020		1602
1021	if (!signals [w->signum - 1].head)	1603	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1604	signal (w->signum, SIG_DFL);
1023	}	1605	}
1024		1606
1025	void	1607	void
1026	ev_idle_start (struct ev_idle *w)
1027	{
1028	if (ev_is_active (w))
1029	return;
1030
1031	ev_start ((W)w, ++idlecnt);
1032	array_needsize (idles, idlemax, idlecnt, );
1033	idles [idlecnt - 1] = w;
1034	}
1035
1036	void
1037	ev_idle_stop (struct ev_idle *w)
1038	{
1039	ev_clear_pending ((W)w);
1040	if (ev_is_active (w))
1041	return;
1042
1043	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);
1045	}
1046
1047	void
1048	ev_prepare_start (struct ev_prepare *w)
1049	{
1050	if (ev_is_active (w))
1051	return;
1052
1053	ev_start ((W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;
1056	}
1057
1058	void
1059	ev_prepare_stop (struct ev_prepare *w)
1060	{
1061	ev_clear_pending ((W)w);
1062	if (ev_is_active (w))
1063	return;
1064
1065	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);
1067	}
1068
1069	void
1070	ev_check_start (struct ev_check *w)
1071	{
1072	if (ev_is_active (w))
1073	return;
1074
1075	ev_start ((W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;
1078	}
1079
1080	void
1081	ev_check_stop (struct ev_check *w)
1082	{
1083	ev_clear_pending ((W)w);
1084	if (ev_is_active (w))
1085	return;
1086
1087	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);
1089	}
1090
1091	void
1092	ev_child_start (struct ev_child *w)	1608	ev_child_start (EV_P_ struct ev_child *w)
1093	{	1609	{
		1610	#if EV_MULTIPLICITY
		1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1612	#endif
1094	if (ev_is_active (w))	1613	if (expect_false (ev_is_active (w)))
1095	return;	1614	return;
1096		1615
1097	ev_start ((W)w, 1);	1616	ev_start (EV_A_ (W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}	1618	}
1100		1619
1101	void	1620	void
1102	ev_child_stop (struct ev_child *w)	1621	ev_child_stop (EV_P_ struct ev_child *w)
1103	{	1622	{
1104	ev_clear_pending ((W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1105	if (ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1106	return;	1625	return;
1107		1626
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1628	ev_stop (EV_A_ (W)w);
1110	}	1629	}
1111		1630
1112	/*****************************************************************************/	1631	/*****************************************************************************/
1113		1632
1114	struct ev_once	1633	struct ev_once
…		…
1118	void (*cb)(int revents, void *arg);	1637	void (*cb)(int revents, void *arg);
1119	void *arg;	1638	void *arg;
1120	};	1639	};
1121		1640
1122	static void	1641	static void
1123	once_cb (struct ev_once *once, int revents)	1642	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1643	{
1125	void (*cb)(int revents, void *arg) = once->cb;	1644	void (*cb)(int revents, void *arg) = once->cb;
1126	void *arg = once->arg;	1645	void *arg = once->arg;
1127		1646
1128	ev_io_stop (&once->io);	1647	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1648	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1649	ev_free (once);
1131		1650
1132	cb (revents, arg);	1651	cb (revents, arg);
1133	}	1652	}
1134		1653
1135	static void	1654	static void
1136	once_cb_io (struct ev_io *w, int revents)	1655	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1656	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1657	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1139	}	1658	}
1140		1659
1141	static void	1660	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1662	{
1144	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1663	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1145	}	1664	}
1146		1665
1147	void	1666	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1667	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1149	{	1668	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1669	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1151		1670
1152	if (!once)	1671	if (expect_false (!once))
		1672	{
1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1673	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1154	else	1674	return;
1155	{	1675	}
		1676
1156	once->cb = cb;	1677	once->cb = cb;
1157	once->arg = arg;	1678	once->arg = arg;
1158		1679
1159	ev_watcher_init (&once->io, once_cb_io);	1680	ev_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1681	if (fd >= 0)
1161	{	1682	{
1162	ev_io_set (&once->io, fd, events);	1683	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1684	ev_io_start (EV_A_ &once->io);
1164	}	1685	}
1165		1686
1166	ev_watcher_init (&once->to, once_cb_to);	1687	ev_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1688	if (timeout >= 0.)
1168	{	1689	{
1169	ev_timer_set (&once->to, timeout, 0.);	1690	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1691	ev_timer_start (EV_A_ &once->to);
1171	}
1172	}
1173	}
1174
1175	/*****************************************************************************/
1176
1177	#if 0
1178
1179	struct ev_io wio;
1180
1181	static void
1182	sin_cb (struct ev_io *w, int revents)
1183	{
1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1185	}
1186
1187	static void
1188	ocb (struct ev_timer *w, int revents)
1189	{
1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1191	ev_timer_stop (w);
1192	ev_timer_start (w);
1193	}
1194
1195	static void
1196	scb (struct ev_signal *w, int revents)
1197	{
1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1199	ev_io_stop (&wio);
1200	ev_io_start (&wio);
1201	}
1202
1203	static void
1204	gcb (struct ev_signal *w, int revents)
1205	{
1206	fprintf (stderr, "generic %x\n", revents);
1207
1208	}
1209
1210	int main (void)
1211	{
1212	ev_init (0);
1213
1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
1215	ev_io_start (&wio);
1216
1217	struct ev_timer t[10000];
1218
1219	#if 0
1220	int i;
1221	for (i = 0; i < 10000; ++i)
1222	{	1692	}
1223	struct ev_timer *w = t + i;
1224	ev_watcher_init (w, ocb, i);
1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1226	ev_timer_start (w);
1227	if (drand48 () < 0.5)
1228	ev_timer_stop (w);
1229	}
1230	#endif
1231
1232	struct ev_timer t1;
1233	ev_timer_init (&t1, ocb, 5, 10);
1234	ev_timer_start (&t1);
1235
1236	struct ev_signal sig;
1237	ev_signal_init (&sig, scb, SIGQUIT);
1238	ev_signal_start (&sig);
1239
1240	struct ev_check cw;
1241	ev_check_init (&cw, gcb);
1242	ev_check_start (&cw);
1243
1244	struct ev_idle iw;
1245	ev_idle_init (&iw, gcb);
1246	ev_idle_start (&iw);
1247
1248	ev_loop (0);
1249
1250	return 0;
1251	}	1693	}
1252		1694
		1695	#ifdef __cplusplus
		1696	}
1253	#endif	1697	#endif
1254		1698
1255
1256
1257

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