ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#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) */	180	#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 */	181	#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 */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
117		210
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
120	/*****************************************************************************/	217	/*****************************************************************************/
121		218
		219	static void (*syserr_cb)(const char *msg);
		220
		221	void ev_set_syserr_cb (void (*cb)(const char *msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void *(*alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
122	typedef struct	267	typedef struct
123	{	268	{
124	struct ev_watcher_list *head;	269	WL head;
125	unsigned char events;	270	unsigned char events;
126	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
127	} ANFD;	275	} ANFD;
128		276
129	typedef struct	277	typedef struct
130	{	278	{
131	W w;	279	W w;
132	int events;	280	int events;
133	} ANPENDING;	281	} ANPENDING;
134		282
135	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
136		284
137	struct ev_loop	285	struct ev_loop
138	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	290	#include "ev_vars.h"
141	};
142	# undef VAR	291	#undef VAR
		292	};
143	# include "ev_wrap.h"	293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
144		297
145	#else	298	#else
146		299
		300	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	302	#include "ev_vars.h"
149	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
150		306
151	#endif	307	#endif
152		308
153	/*****************************************************************************/	309	/*****************************************************************************/
154		310
155	inline ev_tstamp	311	ev_tstamp
156	ev_time (void)	312	ev_time (void)
157	{	313	{
158	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
159	struct timespec ts;	315	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	335	#endif
180		336
181	return ev_time ();	337	return ev_time ();
182	}	338	}
183		339
		340	#if EV_MULTIPLICITY
184	ev_tstamp	341	ev_tstamp
185	ev_now (EV_P)	342	ev_now (EV_P)
186	{	343	{
187	return rt_now;	344	return ev_rt_now;
188	}	345	}
		346	#endif
189		347
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
191		349
192	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
194	{ \	352	{ \
195	int newcnt = cur; \	353	int newcnt = cur; \
196	do \	354	do \
197	{ \	355	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	357	} \
200	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
201	\	359	\
202	base = realloc (base, sizeof (*base) * (newcnt)); \	360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
203	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	362	cur = newcnt; \
205	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		375
207	/*****************************************************************************/	376	/*****************************************************************************/
208		377
209	static void	378	static void
210	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
217		386
218	++base;	387	++base;
219	}	388	}
220	}	389	}
221		390
222	static void	391	void
223	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
224	{	393	{
225	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
226	{	397	{
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
228	return;	399	return;
229	}	400	}
230		401
231	w->pending = ++pendingcnt [ABSPRI (w)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	406	}
236		407
237	static void	408	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	409	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	410	{
240	int i;	411	int i;
241		412
242	for (i = 0; i < eventcnt; ++i)	413	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	414	ev_feed_event (EV_A_ events [i], type);
244	}	415	}
245		416
246	static void	417	inline void
247	fd_event (EV_P_ int fd, int events)	418	fd_event (EV_P_ int fd, int revents)
248	{	419	{
249	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	421	ev_io *w;
251		422
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	423	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	424	{
254	int ev = w->events & events;	425	int ev = w->events & revents;
255		426
256	if (ev)	427	if (ev)
257	event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
258	}	429	}
		430	}
		431
		432	void
		433	ev_feed_fd_event (EV_P_ int fd, int revents)
		434	{
		435	fd_event (EV_A_ fd, revents);
259	}	436	}
260		437
261	/*****************************************************************************/	438	/*****************************************************************************/
262		439
263	static void	440	inline void
264	fd_reify (EV_P)	441	fd_reify (EV_P)
265	{	442	{
266	int i;	443	int i;
267		444
268	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
269	{	446	{
270	int fd = fdchanges [i];	447	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	449	ev_io *w;
273		450
274	int events = 0;	451	int events = 0;
275		452
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	453	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	454	events |= w->events;
278		455
		456	#if EV_SELECT_IS_WINSOCKET
		457	if (events)
		458	{
		459	unsigned long argp;
		460	anfd->handle = _get_osfhandle (fd);
		461	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		462	}
		463	#endif
		464
279	anfd->reify = 0;	465	anfd->reify = 0;
280		466
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	468	anfd->events = events;
285	}
286	}	469	}
287		470
288	fdchangecnt = 0;	471	fdchangecnt = 0;
289	}	472	}
290		473
291	static void	474	static void
292	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
293	{	476	{
294	if (anfds [fd].reify || fdchangecnt < 0)	477	if (expect_false (anfds [fd].reify))
295	return;	478	return;
296		479
297	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
298		481
299	++fdchangecnt;	482	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
302	}	485	}
303		486
304	static void	487	static void
305	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
306	{	489	{
307	struct ev_io *w;	490	ev_io *w;
308		491
309	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
310	{	493	{
311	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	496	}
		497	}
		498
		499	inline int
		500	fd_valid (int fd)
		501	{
		502	#ifdef _WIN32
		503	return _get_osfhandle (fd) != -1;
		504	#else
		505	return fcntl (fd, F_GETFD) != -1;
		506	#endif
314	}	507	}
315		508
316	/* called on EBADF to verify fds */	509	/* called on EBADF to verify fds */
317	static void	510	static void
318	fd_ebadf (EV_P)	511	fd_ebadf (EV_P)
319	{	512	{
320	int fd;	513	int fd;
321		514
322	for (fd = 0; fd < anfdmax; ++fd)	515	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	516	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	517	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	518	fd_kill (EV_A_ fd);
326	}	519	}
327		520
328	/* called on ENOMEM in select/poll to kill some fds and retry */	521	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	522	static void
330	fd_enomem (EV_P)	523	fd_enomem (EV_P)
331	{	524	{
332	int fd = anfdmax;	525	int fd;
333		526
334	while (fd--)	527	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	528	if (anfds [fd].events)
336	{	529	{
337	close (fd);
338	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
339	return;	531	return;
340	}	532	}
341	}	533	}
342		534
343	/* susually called after fork if method needs to re-arm all fds from scratch */	535	/* usually called after fork if backend needs to re-arm all fds from scratch */
344	static void	536	static void
345	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
346	{	538	{
347	int fd;	539	int fd;
348		540
349	/* this should be highly optimised to not do anything but set a flag */	541	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	542	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	543	if (anfds [fd].events)
352	{	544	{
353	anfds [fd].events = 0;	545	anfds [fd].events = 0;
354	fd_change (fd);	546	fd_change (EV_A_ fd);
355	}	547	}
356	}	548	}
357		549
358	/*****************************************************************************/	550	/*****************************************************************************/
359		551
…		…
363	WT w = heap [k];	555	WT w = heap [k];
364		556
365	while (k && heap [k >> 1]->at > w->at)	557	while (k && heap [k >> 1]->at > w->at)
366	{	558	{
367	heap [k] = heap [k >> 1];	559	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
369	k >>= 1;	561	k >>= 1;
370	}	562	}
371		563
372	heap [k] = w;	564	heap [k] = w;
373	heap [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
374		566
375	}	567	}
376		568
377	static void	569	static void
378	downheap (WT *heap, int N, int k)	570	downheap (WT *heap, int N, int k)
…		…
388		580
389	if (w->at <= heap [j]->at)	581	if (w->at <= heap [j]->at)
390	break;	582	break;
391		583
392	heap [k] = heap [j];	584	heap [k] = heap [j];
393	heap [k]->active = k + 1;	585	((W)heap [k])->active = k + 1;
394	k = j;	586	k = j;
395	}	587	}
396		588
397	heap [k] = w;	589	heap [k] = w;
398	heap [k]->active = k + 1;	590	((W)heap [k])->active = k + 1;
		591	}
		592
		593	inline void
		594	adjustheap (WT *heap, int N, int k)
		595	{
		596	upheap (heap, k);
		597	downheap (heap, N, k);
399	}	598	}
400		599
401	/*****************************************************************************/	600	/*****************************************************************************/
402		601
403	typedef struct	602	typedef struct
404	{	603	{
405	struct ev_watcher_list *head;	604	WL head;
406	sig_atomic_t volatile gotsig;	605	sig_atomic_t volatile gotsig;
407	} ANSIG;	606	} ANSIG;
408		607
409	static ANSIG *signals;	608	static ANSIG *signals;
410	static int signalmax;	609	static int signalmax;
411		610
412	static int sigpipe [2];	611	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
		613	static ev_io sigev;
414		614
415	static void	615	static void
416	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
417	{	617	{
418	while (count--)	618	while (count--)
…		…
425	}	625	}
426		626
427	static void	627	static void
428	sighandler (int signum)	628	sighandler (int signum)
429	{	629	{
		630	#if _WIN32
		631	signal (signum, sighandler);
		632	#endif
		633
430	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
431		635
432	if (!gotsig)	636	if (!gotsig)
433	{	637	{
434	int old_errno = errno;	638	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	641	errno = old_errno;
438	}	642	}
439	}	643	}
440		644
		645	void
		646	ev_feed_signal_event (EV_P_ int signum)
		647	{
		648	WL w;
		649
		650	#if EV_MULTIPLICITY
		651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		652	#endif
		653
		654	--signum;
		655
		656	if (signum < 0 || signum >= signalmax)
		657	return;
		658
		659	signals [signum].gotsig = 0;
		660
		661	for (w = signals [signum].head; w; w = w->next)
		662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		663	}
		664
441	static void	665	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	666	sigcb (EV_P_ ev_io *iow, int revents)
443	{	667	{
444	struct ev_watcher_list *w;
445	int signum;	668	int signum;
446		669
447	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	671	gotsig = 0;
449		672
450	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
452	{	675	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;	676	}
454		677
455	for (w = signals [signum].head; w; w = w->next)	678	static void
456	event (EV_A_ (W)w, EV_SIGNAL);	679	fd_intern (int fd)
457	}	680	{
		681	#ifdef _WIN32
		682	int arg = 1;
		683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		684	#else
		685	fcntl (fd, F_SETFD, FD_CLOEXEC);
		686	fcntl (fd, F_SETFL, O_NONBLOCK);
		687	#endif
458	}	688	}
459		689
460	static void	690	static void
461	siginit (EV_P)	691	siginit (EV_P)
462	{	692	{
463	#ifndef WIN32	693	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		695
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	699	}
476		700
477	/*****************************************************************************/	701	/*****************************************************************************/
478		702
		703	static ev_child *childs [PID_HASHSIZE];
		704
479	#ifndef WIN32	705	#ifndef _WIN32
		706
		707	static ev_signal childev;
480		708
481	#ifndef WCONTINUED	709	#ifndef WCONTINUED
482	# define WCONTINUED 0	710	# define WCONTINUED 0
483	#endif	711	#endif
484		712
485	static void	713	static void
486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
487	{	715	{
488	struct ev_child *w;	716	ev_child *w;
489		717
490	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
491	if (w->pid == pid || !w->pid)	719	if (w->pid == pid || !w->pid)
492	{	720	{
493	w->priority = sw->priority; /* need to do it *now* */	721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
494	w->rpid = pid;	722	w->rpid = pid;
495	w->rstatus = status;	723	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
497	}	725	}
498	}	726	}
499		727
500	static void	728	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
502	{	730	{
503	int pid, status;	731	int pid, status;
504		732
505	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506	{	734	{
507	/* make sure we are called again until all childs have been reaped */	735	/* make sure we are called again until all childs have been reaped */
		736	/* we need to do it this way so that the callback gets called before we continue */
508	event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		738
510	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512	}	741	}
513	}	742	}
514		743
515	#endif	744	#endif
516		745
517	/*****************************************************************************/	746	/*****************************************************************************/
518		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
519	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
520	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
521	#endif	753	#endif
522	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	755	# include "ev_epoll.c"
524	#endif	756	#endif
525	#if EV_USEV_POLL	757	#if EV_USE_POLL
526	# include "ev_poll.c"	758	# include "ev_poll.c"
527	#endif	759	#endif
528	#if EV_USE_SELECT	760	#if EV_USE_SELECT
529	# include "ev_select.c"	761	# include "ev_select.c"
530	#endif	762	#endif
…		…
543		775
544	/* return true if we are running with elevated privileges and should ignore env variables */	776	/* return true if we are running with elevated privileges and should ignore env variables */
545	static int	777	static int
546	enable_secure (void)	778	enable_secure (void)
547	{	779	{
548	#ifdef WIN32	780	#ifdef _WIN32
549	return 0;	781	return 0;
550	#else	782	#else
551	return getuid () != geteuid ()	783	return getuid () != geteuid ()
552	|| getgid () != getegid ();	784	|| getgid () != getegid ();
553	#endif	785	#endif
554	}	786	}
555		787
556	int	788	unsigned int
557	ev_method (EV_P)	789	ev_supported_backends (void)
558	{	790	{
559	return method;	791	unsigned int flags = 0;
560	}
561		792
562	static void	793	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563	loop_init (EV_P_ int methods)	794	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_recommended_backends (void)
564	{	804	{
565	if (!method)	805	unsigned int flags = ev_supported_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	unsigned int
		821	ev_embeddable_backends (void)
		822	{
		823	return EVBACKEND_EPOLL
		824	| EVBACKEND_KQUEUE
		825	| EVBACKEND_PORT;
		826	}
		827
		828	unsigned int
		829	ev_backend (EV_P)
		830	{
		831	return backend;
		832	}
		833
		834	static void
		835	loop_init (EV_P_ unsigned int flags)
		836	{
		837	if (!backend)
566	{	838	{
567	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
568	{	840	{
569	struct timespec ts;	841	struct timespec ts;
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	843	have_monotonic = 1;
572	}	844	}
573	#endif	845	#endif
574		846
575	rt_now = ev_time ();	847	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	848	mn_now = get_clock ();
577	now_floor = mn_now;	849	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
579		851
580	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else
584	methods = EVMETHOD_ANY;
585		856
586	method = 0;	857	if (!(flags & 0x0000ffffUL))
		858	flags |= ev_recommended_backends ();
		859
		860	backend = 0;
		861	#if EV_USE_PORT
		862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		863	#endif
587	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589	#endif	866	#endif
590	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592	#endif	869	#endif
593	#if EV_USEV_POLL	870	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595	#endif	872	#endif
596	#if EV_USE_SELECT	873	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598	#endif	875	#endif
599	}
600	}
601		876
602	void	877	ev_init (&sigev, sigcb);
		878	ev_set_priority (&sigev, EV_MAXPRI);
		879	}
		880	}
		881
		882	static void
603	loop_destroy (EV_P)	883	loop_destroy (EV_P)
604	{	884	{
		885	int i;
		886
		887	#if EV_USE_PORT
		888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		889	#endif
605	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607	#endif	892	#endif
608	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610	#endif	895	#endif
611	#if EV_USEV_POLL	896	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613	#endif	898	#endif
614	#if EV_USE_SELECT	899	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616	#endif	901	#endif
617		902
618	method = 0;	903	for (i = NUMPRI; i--; )
619	/*TODO*/	904	array_free (pending, [i]);
620	}
621		905
622	void	906	/* have to use the microsoft-never-gets-it-right macro */
		907	array_free (fdchange, EMPTY0);
		908	array_free (timer, EMPTY0);
		909	#if EV_PERIODICS
		910	array_free (periodic, EMPTY0);
		911	#endif
		912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
		915
		916	backend = 0;
		917	}
		918
		919	static void
623	loop_fork (EV_P)	920	loop_fork (EV_P)
624	{	921	{
625	/*TODO*/	922	#if EV_USE_PORT
		923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		924	#endif
		925	#if EV_USE_KQUEUE
		926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		927	#endif
626	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628	#endif	930	#endif
629	#if EV_USE_KQUEUE	931
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	932	if (ev_is_active (&sigev))
631	#endif	933	{
		934	/* default loop */
		935
		936	ev_ref (EV_A);
		937	ev_io_stop (EV_A_ &sigev);
		938	close (sigpipe [0]);
		939	close (sigpipe [1]);
		940
		941	while (pipe (sigpipe))
		942	syserr ("(libev) error creating pipe");
		943
		944	siginit (EV_A);
		945	}
		946
		947	postfork = 0;
632	}	948	}
633		949
634	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
635	struct ev_loop *	951	struct ev_loop *
636	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
637	{	953	{
638	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	954	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639		955
		956	memset (loop, 0, sizeof (struct ev_loop));
		957
640	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
641		959
642	if (ev_methods (EV_A))	960	if (ev_backend (EV_A))
643	return loop;	961	return loop;
644		962
645	return 0;	963	return 0;
646	}	964	}
647		965
648	void	966	void
649	ev_loop_destroy (EV_P)	967	ev_loop_destroy (EV_P)
650	{	968	{
651	loop_destroy (EV_A);	969	loop_destroy (EV_A);
652	free (loop);	970	ev_free (loop);
653	}	971	}
654		972
655	void	973	void
656	ev_loop_fork (EV_P)	974	ev_loop_fork (EV_P)
657	{	975	{
658	loop_fork (EV_A);	976	postfork = 1;
659	}	977	}
660		978
661	#endif	979	#endif
662		980
663	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
668	#else	984	#else
669	static int default_loop;
670
671	int	985	int
		986	ev_default_loop (unsigned int flags)
672	#endif	987	#endif
673	ev_default_loop (int methods)
674	{	988	{
675	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	990	if (pipe (sigpipe))
677	return 0;	991	return 0;
678		992
679	if (!default_loop)	993	if (!ev_default_loop_ptr)
680	{	994	{
681	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
682	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683	#else	997	#else
684	default_loop = 1;	998	ev_default_loop_ptr = 1;
685	#endif	999	#endif
686		1000
687	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
688		1002
689	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
690	{	1004	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	1005	siginit (EV_A);
694		1006
695	#ifndef WIN32	1007	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	1012	#endif
701	}	1013	}
702	else	1014	else
703	default_loop = 0;	1015	ev_default_loop_ptr = 0;
704	}	1016	}
705		1017
706	return default_loop;	1018	return ev_default_loop_ptr;
707	}	1019	}
708		1020
709	void	1021	void
710	ev_default_destroy (void)	1022	ev_default_destroy (void)
711	{	1023	{
712	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
713	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
714	#endif	1026	#endif
715		1027
		1028	#ifndef _WIN32
716	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
717	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
		1031	#endif
718		1032
719	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
720	ev_io_stop (EV_A_ &sigev);	1034	ev_io_stop (EV_A_ &sigev);
721		1035
722	close (sigpipe [0]); sigpipe [0] = 0;	1036	close (sigpipe [0]); sigpipe [0] = 0;
…		…
724		1038
725	loop_destroy (EV_A);	1039	loop_destroy (EV_A);
726	}	1040	}
727		1041
728	void	1042	void
729	ev_default_fork (EV_P)	1043	ev_default_fork (void)
730	{	1044	{
731	loop_fork (EV_A);	1045	#if EV_MULTIPLICITY
		1046	struct ev_loop *loop = ev_default_loop_ptr;
		1047	#endif
732		1048
733	ev_io_stop (EV_A_ &sigev);	1049	if (backend)
734	close (sigpipe [0]);	1050	postfork = 1;
735	close (sigpipe [1]);
736	pipe (sigpipe);
737
738	ev_ref (EV_A); /* signal watcher */
739	siginit (EV_A);
740	}	1051	}
741		1052
742	/*****************************************************************************/	1053	/*****************************************************************************/
743		1054
744	static void	1055	static int
		1056	any_pending (EV_P)
		1057	{
		1058	int pri;
		1059
		1060	for (pri = NUMPRI; pri--; )
		1061	if (pendingcnt [pri])
		1062	return 1;
		1063
		1064	return 0;
		1065	}
		1066
		1067	inline void
745	call_pending (EV_P)	1068	call_pending (EV_P)
746	{	1069	{
747	int pri;	1070	int pri;
748		1071
749	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
750	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
751	{	1074	{
752	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753		1076
754	if (p->w)	1077	if (expect_true (p->w))
755	{	1078	{
		1079	assert (("non-pending watcher on pending list", p->w->pending));
		1080
756	p->w->pending = 0;	1081	p->w->pending = 0;
757	p->w->cb (EV_A_ p->w, p->events);	1082	EV_CB_INVOKE (p->w, p->events);
758	}	1083	}
759	}	1084	}
760	}	1085	}
761		1086
762	static void	1087	inline void
763	timers_reify (EV_P)	1088	timers_reify (EV_P)
764	{	1089	{
765	while (timercnt && timers [0]->at <= mn_now)	1090	while (timercnt && ((WT)timers [0])->at <= mn_now)
766	{	1091	{
767	struct ev_timer *w = timers [0];	1092	ev_timer *w = timers [0];
		1093
		1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));
768		1095
769	/* first reschedule or stop timer */	1096	/* first reschedule or stop timer */
770	if (w->repeat)	1097	if (w->repeat)
771	{	1098	{
772	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1099	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1100
773	w->at = mn_now + w->repeat;	1101	((WT)w)->at += w->repeat;
		1102	if (((WT)w)->at < mn_now)
		1103	((WT)w)->at = mn_now;
		1104
774	downheap ((WT *)timers, timercnt, 0);	1105	downheap ((WT *)timers, timercnt, 0);
775	}	1106	}
776	else	1107	else
777	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1108	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778		1109
779	event (EV_A_ (W)w, EV_TIMEOUT);	1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780	}	1111	}
781	}	1112	}
782		1113
783	static void	1114	#if EV_PERIODICS
		1115	inline void
784	periodics_reify (EV_P)	1116	periodics_reify (EV_P)
785	{	1117	{
786	while (periodiccnt && periodics [0]->at <= rt_now)	1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787	{	1119	{
788	struct ev_periodic *w = periodics [0];	1120	ev_periodic *w = periodics [0];
		1121
		1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
789		1123
790	/* first reschedule or stop timer */	1124	/* first reschedule or stop timer */
791	if (w->interval)	1125	if (w->reschedule_cb)
792	{	1126	{
		1127	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1128	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1129	downheap ((WT *)periodics, periodiccnt, 0);
		1130	}
		1131	else if (w->interval)
		1132	{
793	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1133	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
794	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1134	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
795	downheap ((WT *)periodics, periodiccnt, 0);	1135	downheap ((WT *)periodics, periodiccnt, 0);
796	}	1136	}
797	else	1137	else
798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1138	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799		1139
800	event (EV_A_ (W)w, EV_PERIODIC);	1140	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801	}	1141	}
802	}	1142	}
803		1143
804	static void	1144	static void
805	periodics_reschedule (EV_P)	1145	periodics_reschedule (EV_P)
…		…
807	int i;	1147	int i;
808		1148
809	/* adjust periodics after time jump */	1149	/* adjust periodics after time jump */
810	for (i = 0; i < periodiccnt; ++i)	1150	for (i = 0; i < periodiccnt; ++i)
811	{	1151	{
812	struct ev_periodic *w = periodics [i];	1152	ev_periodic *w = periodics [i];
813		1153
		1154	if (w->reschedule_cb)
		1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814	if (w->interval)	1156	else if (w->interval)
815	{
816	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1157	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
817
818	if (fabs (diff) >= 1e-4)
819	{
820	ev_periodic_stop (EV_A_ w);
821	ev_periodic_start (EV_A_ w);
822
823	i = 0; /* restart loop, inefficient, but time jumps should be rare */
824	}
825	}
826	}	1158	}
		1159
		1160	/* now rebuild the heap */
		1161	for (i = periodiccnt >> 1; i--; )
		1162	downheap ((WT *)periodics, periodiccnt, i);
827	}	1163	}
		1164	#endif
828		1165
829	inline int	1166	inline int
830	time_update_monotonic (EV_P)	1167	time_update_monotonic (EV_P)
831	{	1168	{
832	mn_now = get_clock ();	1169	mn_now = get_clock ();
833		1170
834	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1171	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
835	{	1172	{
836	rt_now = rtmn_diff + mn_now;	1173	ev_rt_now = rtmn_diff + mn_now;
837	return 0;	1174	return 0;
838	}	1175	}
839	else	1176	else
840	{	1177	{
841	now_floor = mn_now;	1178	now_floor = mn_now;
842	rt_now = ev_time ();	1179	ev_rt_now = ev_time ();
843	return 1;	1180	return 1;
844	}	1181	}
845	}	1182	}
846		1183
847	static void	1184	inline void
848	time_update (EV_P)	1185	time_update (EV_P)
849	{	1186	{
850	int i;	1187	int i;
851		1188
852	#if EV_USE_MONOTONIC	1189	#if EV_USE_MONOTONIC
…		…
854	{	1191	{
855	if (time_update_monotonic (EV_A))	1192	if (time_update_monotonic (EV_A))
856	{	1193	{
857	ev_tstamp odiff = rtmn_diff;	1194	ev_tstamp odiff = rtmn_diff;
858		1195
859	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1196	/* loop a few times, before making important decisions.
		1197	* on the choice of "4": one iteration isn't enough,
		1198	* in case we get preempted during the calls to
		1199	* ev_time and get_clock. a second call is almost guarenteed
		1200	* to succeed in that case, though. and looping a few more times
		1201	* doesn't hurt either as we only do this on time-jumps or
		1202	* in the unlikely event of getting preempted here.
		1203	*/
		1204	for (i = 4; --i; )
860	{	1205	{
861	rtmn_diff = rt_now - mn_now;	1206	rtmn_diff = ev_rt_now - mn_now;
862		1207
863	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864	return; /* all is well */	1209	return; /* all is well */
865		1210
866	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
867	mn_now = get_clock ();	1212	mn_now = get_clock ();
868	now_floor = mn_now;	1213	now_floor = mn_now;
869	}	1214	}
870		1215
		1216	# if EV_PERIODICS
871	periodics_reschedule (EV_A);	1217	periodics_reschedule (EV_A);
		1218	# endif
872	/* no timer adjustment, as the monotonic clock doesn't jump */	1219	/* no timer adjustment, as the monotonic clock doesn't jump */
873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
874	}	1221	}
875	}	1222	}
876	else	1223	else
877	#endif	1224	#endif
878	{	1225	{
879	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
880		1227
881	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1228	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
882	{	1229	{
		1230	#if EV_PERIODICS
883	periodics_reschedule (EV_A);	1231	periodics_reschedule (EV_A);
		1232	#endif
884		1233
885	/* adjust timers. this is easy, as the offset is the same for all */	1234	/* adjust timers. this is easy, as the offset is the same for all */
886	for (i = 0; i < timercnt; ++i)	1235	for (i = 0; i < timercnt; ++i)
887	timers [i]->at += rt_now - mn_now;	1236	((WT)timers [i])->at += ev_rt_now - mn_now;
888	}	1237	}
889		1238
890	mn_now = rt_now;	1239	mn_now = ev_rt_now;
891	}	1240	}
892	}	1241	}
893		1242
894	void	1243	void
895	ev_ref (EV_P)	1244	ev_ref (EV_P)
…		…
906	static int loop_done;	1255	static int loop_done;
907		1256
908	void	1257	void
909	ev_loop (EV_P_ int flags)	1258	ev_loop (EV_P_ int flags)
910	{	1259	{
911	double block;
912	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1260	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1261	? EVUNLOOP_ONE
		1262	: EVUNLOOP_CANCEL;
913		1263
914	do	1264	while (activecnt)
915	{	1265	{
916	/* queue check watchers (and execute them) */	1266	/* queue check watchers (and execute them) */
917	if (expect_false (preparecnt))	1267	if (expect_false (preparecnt))
918	{	1268	{
919	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920	call_pending (EV_A);	1270	call_pending (EV_A);
921	}	1271	}
922		1272
		1273	/* we might have forked, so reify kernel state if necessary */
		1274	if (expect_false (postfork))
		1275	loop_fork (EV_A);
		1276
923	/* update fd-related kernel structures */	1277	/* update fd-related kernel structures */
924	fd_reify (EV_A);	1278	fd_reify (EV_A);
925		1279
926	/* calculate blocking time */	1280	/* calculate blocking time */
		1281	{
		1282	double block;
927		1283
928	/* we only need this for !monotonic clockor timers, but as we basically	1284	if (flags & EVLOOP_NONBLOCK || idlecnt)
929	always have timers, we just calculate it always */	1285	block = 0.; /* do not block at all */
		1286	else
		1287	{
		1288	/* update time to cancel out callback processing overhead */
930	#if EV_USE_MONOTONIC	1289	#if EV_USE_MONOTONIC
931	if (expect_true (have_monotonic))	1290	if (expect_true (have_monotonic))
932	time_update_monotonic (EV_A);	1291	time_update_monotonic (EV_A);
933	else	1292	else
934	#endif	1293	#endif
935	{	1294	{
936	rt_now = ev_time ();	1295	ev_rt_now = ev_time ();
937	mn_now = rt_now;	1296	mn_now = ev_rt_now;
938	}	1297	}
939		1298
940	if (flags & EVLOOP_NONBLOCK || idlecnt)
941	block = 0.;
942	else
943	{
944	block = MAX_BLOCKTIME;	1299	block = MAX_BLOCKTIME;
945		1300
946	if (timercnt)	1301	if (timercnt)
947	{	1302	{
948	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
949	if (block > to) block = to;	1304	if (block > to) block = to;
950	}	1305	}
951		1306
		1307	#if EV_PERIODICS
952	if (periodiccnt)	1308	if (periodiccnt)
953	{	1309	{
954	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
955	if (block > to) block = to;	1311	if (block > to) block = to;
956	}	1312	}
		1313	#endif
957		1314
958	if (block < 0.) block = 0.;	1315	if (expect_false (block < 0.)) block = 0.;
959	}	1316	}
960		1317
961	method_poll (EV_A_ block);	1318	backend_poll (EV_A_ block);
		1319	}
962		1320
963	/* update rt_now, do magic */	1321	/* update ev_rt_now, do magic */
964	time_update (EV_A);	1322	time_update (EV_A);
965		1323
966	/* queue pending timers and reschedule them */	1324	/* queue pending timers and reschedule them */
967	timers_reify (EV_A); /* relative timers called last */	1325	timers_reify (EV_A); /* relative timers called last */
		1326	#if EV_PERIODICS
968	periodics_reify (EV_A); /* absolute timers called first */	1327	periodics_reify (EV_A); /* absolute timers called first */
		1328	#endif
969		1329
970	/* queue idle watchers unless io or timers are pending */	1330	/* queue idle watchers unless other events are pending */
971	if (!pendingcnt)	1331	if (idlecnt && !any_pending (EV_A))
972	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
973		1333
974	/* queue check watchers, to be executed first */	1334	/* queue check watchers, to be executed first */
975	if (checkcnt)	1335	if (expect_false (checkcnt))
976	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
977		1337
978	call_pending (EV_A);	1338	call_pending (EV_A);
979	}
980	while (activecnt && !loop_done);
981		1339
982	if (loop_done != 2)	1340	if (expect_false (loop_done))
983	loop_done = 0;	1341	break;
		1342	}
		1343
		1344	if (loop_done == EVUNLOOP_ONE)
		1345	loop_done = EVUNLOOP_CANCEL;
984	}	1346	}
985		1347
986	void	1348	void
987	ev_unloop (EV_P_ int how)	1349	ev_unloop (EV_P_ int how)
988	{	1350	{
…		…
1041	}	1403	}
1042		1404
1043	/*****************************************************************************/	1405	/*****************************************************************************/
1044		1406
1045	void	1407	void
1046	ev_io_start (EV_P_ struct ev_io *w)	1408	ev_io_start (EV_P_ ev_io *w)
1047	{	1409	{
1048	int fd = w->fd;	1410	int fd = w->fd;
1049		1411
1050	if (ev_is_active (w))	1412	if (expect_false (ev_is_active (w)))
1051	return;	1413	return;
1052		1414
1053	assert (("ev_io_start called with negative fd", fd >= 0));	1415	assert (("ev_io_start called with negative fd", fd >= 0));
1054		1416
1055	ev_start (EV_A_ (W)w, 1);	1417	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1418	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1419	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1058		1420
1059	fd_change (EV_A_ fd);	1421	fd_change (EV_A_ fd);
1060	}	1422	}
1061		1423
1062	void	1424	void
1063	ev_io_stop (EV_P_ struct ev_io *w)	1425	ev_io_stop (EV_P_ ev_io *w)
1064	{	1426	{
1065	ev_clear_pending (EV_A_ (W)w);	1427	ev_clear_pending (EV_A_ (W)w);
1066	if (!ev_is_active (w))	1428	if (expect_false (!ev_is_active (w)))
1067	return;	1429	return;
		1430
		1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1068		1432
1069	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1070	ev_stop (EV_A_ (W)w);	1434	ev_stop (EV_A_ (W)w);
1071		1435
1072	fd_change (EV_A_ w->fd);	1436	fd_change (EV_A_ w->fd);
1073	}	1437	}
1074		1438
1075	void	1439	void
1076	ev_timer_start (EV_P_ struct ev_timer *w)	1440	ev_timer_start (EV_P_ ev_timer *w)
1077	{	1441	{
1078	if (ev_is_active (w))	1442	if (expect_false (ev_is_active (w)))
1079	return;	1443	return;
1080		1444
1081	w->at += mn_now;	1445	((WT)w)->at += mn_now;
1082		1446
1083	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1447	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1084		1448
1085	ev_start (EV_A_ (W)w, ++timercnt);	1449	ev_start (EV_A_ (W)w, ++timercnt);
1086	array_needsize (timers, timermax, timercnt, );	1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1087	timers [timercnt - 1] = w;	1451	timers [timercnt - 1] = w;
1088	upheap ((WT *)timers, timercnt - 1);	1452	upheap ((WT *)timers, timercnt - 1);
1089	}
1090		1453
		1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1455	}
		1456
1091	void	1457	void
1092	ev_timer_stop (EV_P_ struct ev_timer *w)	1458	ev_timer_stop (EV_P_ ev_timer *w)
1093	{	1459	{
1094	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1095	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1096	return;	1462	return;
1097		1463
		1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1465
1098	if (w->active < timercnt--)	1466	if (expect_true (((W)w)->active < timercnt--))
1099	{	1467	{
1100	timers [w->active - 1] = timers [timercnt];	1468	timers [((W)w)->active - 1] = timers [timercnt];
1101	downheap ((WT *)timers, timercnt, w->active - 1);	1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1102	}	1470	}
1103		1471
1104	w->at = w->repeat;	1472	((WT)w)->at -= mn_now;
1105		1473
1106	ev_stop (EV_A_ (W)w);	1474	ev_stop (EV_A_ (W)w);
1107	}	1475	}
1108		1476
1109	void	1477	void
1110	ev_timer_again (EV_P_ struct ev_timer *w)	1478	ev_timer_again (EV_P_ ev_timer *w)
1111	{	1479	{
1112	if (ev_is_active (w))	1480	if (ev_is_active (w))
1113	{	1481	{
1114	if (w->repeat)	1482	if (w->repeat)
1115	{	1483	{
1116	w->at = mn_now + w->repeat;	1484	((WT)w)->at = mn_now + w->repeat;
1117	downheap ((WT *)timers, timercnt, w->active - 1);	1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1118	}	1486	}
1119	else	1487	else
1120	ev_timer_stop (EV_A_ w);	1488	ev_timer_stop (EV_A_ w);
1121	}	1489	}
1122	else if (w->repeat)	1490	else if (w->repeat)
		1491	{
		1492	w->at = w->repeat;
1123	ev_timer_start (EV_A_ w);	1493	ev_timer_start (EV_A_ w);
		1494	}
1124	}	1495	}
1125		1496
		1497	#if EV_PERIODICS
1126	void	1498	void
1127	ev_periodic_start (EV_P_ struct ev_periodic *w)	1499	ev_periodic_start (EV_P_ ev_periodic *w)
1128	{	1500	{
1129	if (ev_is_active (w))	1501	if (expect_false (ev_is_active (w)))
1130	return;	1502	return;
1131		1503
		1504	if (w->reschedule_cb)
		1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1506	else if (w->interval)
		1507	{
1132	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1508	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1133
1134	/* this formula differs from the one in periodic_reify because we do not always round up */	1509	/* this formula differs from the one in periodic_reify because we do not always round up */
1135	if (w->interval)
1136	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1511	}
1137		1512
1138	ev_start (EV_A_ (W)w, ++periodiccnt);	1513	ev_start (EV_A_ (W)w, ++periodiccnt);
1139	array_needsize (periodics, periodicmax, periodiccnt, );	1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1140	periodics [periodiccnt - 1] = w;	1515	periodics [periodiccnt - 1] = w;
1141	upheap ((WT *)periodics, periodiccnt - 1);	1516	upheap ((WT *)periodics, periodiccnt - 1);
1142	}
1143		1517
		1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1519	}
		1520
1144	void	1521	void
1145	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1522	ev_periodic_stop (EV_P_ ev_periodic *w)
1146	{	1523	{
1147	ev_clear_pending (EV_A_ (W)w);	1524	ev_clear_pending (EV_A_ (W)w);
1148	if (!ev_is_active (w))	1525	if (expect_false (!ev_is_active (w)))
1149	return;	1526	return;
1150		1527
		1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1529
1151	if (w->active < periodiccnt--)	1530	if (expect_true (((W)w)->active < periodiccnt--))
1152	{	1531	{
1153	periodics [w->active - 1] = periodics [periodiccnt];	1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1154	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1155	}	1534	}
1156		1535
1157	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1158	}	1537	}
1159		1538
1160	void	1539	void
		1540	ev_periodic_again (EV_P_ ev_periodic *w)
		1541	{
		1542	/* TODO: use adjustheap and recalculation */
		1543	ev_periodic_stop (EV_A_ w);
		1544	ev_periodic_start (EV_A_ w);
		1545	}
		1546	#endif
		1547
		1548	void
1161	ev_idle_start (EV_P_ struct ev_idle *w)	1549	ev_idle_start (EV_P_ ev_idle *w)
1162	{	1550	{
1163	if (ev_is_active (w))	1551	if (expect_false (ev_is_active (w)))
1164	return;	1552	return;
1165		1553
1166	ev_start (EV_A_ (W)w, ++idlecnt);	1554	ev_start (EV_A_ (W)w, ++idlecnt);
1167	array_needsize (idles, idlemax, idlecnt, );	1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1168	idles [idlecnt - 1] = w;	1556	idles [idlecnt - 1] = w;
1169	}	1557	}
1170		1558
1171	void	1559	void
1172	ev_idle_stop (EV_P_ struct ev_idle *w)	1560	ev_idle_stop (EV_P_ ev_idle *w)
1173	{	1561	{
1174	ev_clear_pending (EV_A_ (W)w);	1562	ev_clear_pending (EV_A_ (W)w);
1175	if (ev_is_active (w))	1563	if (expect_false (!ev_is_active (w)))
1176	return;	1564	return;
1177		1565
		1566	{
		1567	int active = ((W)w)->active;
1178	idles [w->active - 1] = idles [--idlecnt];	1568	idles [active - 1] = idles [--idlecnt];
		1569	((W)idles [active - 1])->active = active;
		1570	}
		1571
1179	ev_stop (EV_A_ (W)w);	1572	ev_stop (EV_A_ (W)w);
1180	}	1573	}
1181		1574
1182	void	1575	void
1183	ev_prepare_start (EV_P_ struct ev_prepare *w)	1576	ev_prepare_start (EV_P_ ev_prepare *w)
1184	{	1577	{
1185	if (ev_is_active (w))	1578	if (expect_false (ev_is_active (w)))
1186	return;	1579	return;
1187		1580
1188	ev_start (EV_A_ (W)w, ++preparecnt);	1581	ev_start (EV_A_ (W)w, ++preparecnt);
1189	array_needsize (prepares, preparemax, preparecnt, );	1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1190	prepares [preparecnt - 1] = w;	1583	prepares [preparecnt - 1] = w;
1191	}	1584	}
1192		1585
1193	void	1586	void
1194	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1195	{	1588	{
1196	ev_clear_pending (EV_A_ (W)w);	1589	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))	1590	if (expect_false (!ev_is_active (w)))
1198	return;	1591	return;
1199		1592
		1593	{
		1594	int active = ((W)w)->active;
1200	prepares [w->active - 1] = prepares [--preparecnt];	1595	prepares [active - 1] = prepares [--preparecnt];
		1596	((W)prepares [active - 1])->active = active;
		1597	}
		1598
1201	ev_stop (EV_A_ (W)w);	1599	ev_stop (EV_A_ (W)w);
1202	}	1600	}
1203		1601
1204	void	1602	void
1205	ev_check_start (EV_P_ struct ev_check *w)	1603	ev_check_start (EV_P_ ev_check *w)
1206	{	1604	{
1207	if (ev_is_active (w))	1605	if (expect_false (ev_is_active (w)))
1208	return;	1606	return;
1209		1607
1210	ev_start (EV_A_ (W)w, ++checkcnt);	1608	ev_start (EV_A_ (W)w, ++checkcnt);
1211	array_needsize (checks, checkmax, checkcnt, );	1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1212	checks [checkcnt - 1] = w;	1610	checks [checkcnt - 1] = w;
1213	}	1611	}
1214		1612
1215	void	1613	void
1216	ev_check_stop (EV_P_ struct ev_check *w)	1614	ev_check_stop (EV_P_ ev_check *w)
1217	{	1615	{
1218	ev_clear_pending (EV_A_ (W)w);	1616	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
1220	return;	1618	return;
1221		1619
		1620	{
		1621	int active = ((W)w)->active;
1222	checks [w->active - 1] = checks [--checkcnt];	1622	checks [active - 1] = checks [--checkcnt];
		1623	((W)checks [active - 1])->active = active;
		1624	}
		1625
1223	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1224	}	1627	}
1225		1628
1226	#ifndef SA_RESTART	1629	#ifndef SA_RESTART
1227	# define SA_RESTART 0	1630	# define SA_RESTART 0
1228	#endif	1631	#endif
1229		1632
1230	void	1633	void
1231	ev_signal_start (EV_P_ struct ev_signal *w)	1634	ev_signal_start (EV_P_ ev_signal *w)
1232	{	1635	{
1233	#if EV_MULTIPLICITY	1636	#if EV_MULTIPLICITY
1234	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1235	#endif	1638	#endif
1236	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1237	return;	1640	return;
1238		1641
1239	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1240		1643
1241	ev_start (EV_A_ (W)w, 1);	1644	ev_start (EV_A_ (W)w, 1);
1242	array_needsize (signals, signalmax, w->signum, signals_init);	1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1243	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1244		1647
1245	if (!w->next)	1648	if (!((WL)w)->next)
1246	{	1649	{
		1650	#if _WIN32
		1651	signal (w->signum, sighandler);
		1652	#else
1247	struct sigaction sa;	1653	struct sigaction sa;
1248	sa.sa_handler = sighandler;	1654	sa.sa_handler = sighandler;
1249	sigfillset (&sa.sa_mask);	1655	sigfillset (&sa.sa_mask);
1250	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1656	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1251	sigaction (w->signum, &sa, 0);	1657	sigaction (w->signum, &sa, 0);
		1658	#endif
1252	}	1659	}
1253	}	1660	}
1254		1661
1255	void	1662	void
1256	ev_signal_stop (EV_P_ struct ev_signal *w)	1663	ev_signal_stop (EV_P_ ev_signal *w)
1257	{	1664	{
1258	ev_clear_pending (EV_A_ (W)w);	1665	ev_clear_pending (EV_A_ (W)w);
1259	if (!ev_is_active (w))	1666	if (expect_false (!ev_is_active (w)))
1260	return;	1667	return;
1261		1668
1262	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1263	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1264		1671
1265	if (!signals [w->signum - 1].head)	1672	if (!signals [w->signum - 1].head)
1266	signal (w->signum, SIG_DFL);	1673	signal (w->signum, SIG_DFL);
1267	}	1674	}
1268		1675
1269	void	1676	void
1270	ev_child_start (EV_P_ struct ev_child *w)	1677	ev_child_start (EV_P_ ev_child *w)
1271	{	1678	{
1272	#if EV_MULTIPLICITY	1679	#if EV_MULTIPLICITY
1273	assert (("child watchers are only supported in the default loop", loop == default_loop));	1680	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1274	#endif	1681	#endif
1275	if (ev_is_active (w))	1682	if (expect_false (ev_is_active (w)))
1276	return;	1683	return;
1277		1684
1278	ev_start (EV_A_ (W)w, 1);	1685	ev_start (EV_A_ (W)w, 1);
1279	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1280	}	1687	}
1281		1688
1282	void	1689	void
1283	ev_child_stop (EV_P_ struct ev_child *w)	1690	ev_child_stop (EV_P_ ev_child *w)
1284	{	1691	{
1285	ev_clear_pending (EV_A_ (W)w);	1692	ev_clear_pending (EV_A_ (W)w);
1286	if (ev_is_active (w))	1693	if (expect_false (!ev_is_active (w)))
1287	return;	1694	return;
1288		1695
1289	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1290	ev_stop (EV_A_ (W)w);	1697	ev_stop (EV_A_ (W)w);
1291	}	1698	}
1292		1699
		1700	#if EV_MULTIPLICITY
		1701	void
		1702	ev_embed_sweep (EV_P_ ev_embed *w)
		1703	{
		1704	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1705	}
		1706
		1707	static void
		1708	embed_cb (EV_P_ ev_io *io, int revents)
		1709	{
		1710	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1711
		1712	if (ev_cb (w))
		1713	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1714	else
		1715	ev_embed_sweep (loop, w);
		1716	}
		1717
		1718	void
		1719	ev_embed_start (EV_P_ ev_embed *w)
		1720	{
		1721	if (expect_false (ev_is_active (w)))
		1722	return;
		1723
		1724	{
		1725	struct ev_loop *loop = w->loop;
		1726	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1728	}
		1729
		1730	ev_set_priority (&w->io, ev_priority (w));
		1731	ev_io_start (EV_A_ &w->io);
		1732	ev_start (EV_A_ (W)w, 1);
		1733	}
		1734
		1735	void
		1736	ev_embed_stop (EV_P_ ev_embed *w)
		1737	{
		1738	ev_clear_pending (EV_A_ (W)w);
		1739	if (expect_false (!ev_is_active (w)))
		1740	return;
		1741
		1742	ev_io_stop (EV_A_ &w->io);
		1743	ev_stop (EV_A_ (W)w);
		1744	}
		1745	#endif
		1746
1293	/*****************************************************************************/	1747	/*****************************************************************************/
1294		1748
1295	struct ev_once	1749	struct ev_once
1296	{	1750	{
1297	struct ev_io io;	1751	ev_io io;
1298	struct ev_timer to;	1752	ev_timer to;
1299	void (*cb)(int revents, void *arg);	1753	void (*cb)(int revents, void *arg);
1300	void *arg;	1754	void *arg;
1301	};	1755	};
1302		1756
1303	static void	1757	static void
…		…
1306	void (*cb)(int revents, void *arg) = once->cb;	1760	void (*cb)(int revents, void *arg) = once->cb;
1307	void *arg = once->arg;	1761	void *arg = once->arg;
1308		1762
1309	ev_io_stop (EV_A_ &once->io);	1763	ev_io_stop (EV_A_ &once->io);
1310	ev_timer_stop (EV_A_ &once->to);	1764	ev_timer_stop (EV_A_ &once->to);
1311	free (once);	1765	ev_free (once);
1312		1766
1313	cb (revents, arg);	1767	cb (revents, arg);
1314	}	1768	}
1315		1769
1316	static void	1770	static void
1317	once_cb_io (EV_P_ struct ev_io *w, int revents)	1771	once_cb_io (EV_P_ ev_io *w, int revents)
1318	{	1772	{
1319	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1773	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1320	}	1774	}
1321		1775
1322	static void	1776	static void
1323	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1777	once_cb_to (EV_P_ ev_timer *w, int revents)
1324	{	1778	{
1325	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1779	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1326	}	1780	}
1327		1781
1328	void	1782	void
1329	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1783	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1330	{	1784	{
1331	struct ev_once *once = malloc (sizeof (struct ev_once));	1785	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1332		1786
1333	if (!once)	1787	if (expect_false (!once))
		1788	{
1334	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1789	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1335	else	1790	return;
1336	{	1791	}
		1792
1337	once->cb = cb;	1793	once->cb = cb;
1338	once->arg = arg;	1794	once->arg = arg;
1339		1795
1340	ev_watcher_init (&once->io, once_cb_io);	1796	ev_init (&once->io, once_cb_io);
1341	if (fd >= 0)	1797	if (fd >= 0)
1342	{	1798	{
1343	ev_io_set (&once->io, fd, events);	1799	ev_io_set (&once->io, fd, events);
1344	ev_io_start (EV_A_ &once->io);	1800	ev_io_start (EV_A_ &once->io);
1345	}	1801	}
1346		1802
1347	ev_watcher_init (&once->to, once_cb_to);	1803	ev_init (&once->to, once_cb_to);
1348	if (timeout >= 0.)	1804	if (timeout >= 0.)
1349	{	1805	{
1350	ev_timer_set (&once->to, timeout, 0.);	1806	ev_timer_set (&once->to, timeout, 0.);
1351	ev_timer_start (EV_A_ &once->to);	1807	ev_timer_start (EV_A_ &once->to);
1352	}
1353	}	1808	}
1354	}	1809	}
1355		1810
		1811	#ifdef __cplusplus
		1812	}
		1813	#endif
		1814

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines