[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		56	# define EV_USE_SELECT 1
		57	# else
		58	# define EV_USE_SELECT 0
		59	# endif
		60
		61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		62	# define EV_USE_POLL 1
		63	# else
		64	# define EV_USE_POLL 0
		65	# endif
		66
		67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		68	# define EV_USE_EPOLL 1
		69	# else
		70	# define EV_USE_EPOLL 0
		71	# endif
		72
		73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		74	# define EV_USE_KQUEUE 1
		75	# else
		76	# define EV_USE_KQUEUE 0
		77	# endif
		78
		79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		80	# define EV_USE_PORT 1
		81	# else
		82	# define EV_USE_PORT 0
		83	# endif
		84
33	#endif	85	#endif
34		86
35	#include <math.h>	87	#include <math.h>
36	#include <stdlib.h>	88	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	89	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	90	#include <stddef.h>
41		91
42	#include <stdio.h>	92	#include <stdio.h>
43		93
44	#include <assert.h>	94	#include <assert.h>
45	#include <errno.h>	95	#include <errno.h>
46	#include <sys/types.h>	96	#include <sys/types.h>
		97	#include <time.h>
		98
		99	#include <signal.h>
		100
47	#ifndef WIN32	101	#ifndef _WIN32
		102	# include <unistd.h>
		103	# include <sys/time.h>
48	# include <sys/wait.h>	104	# include <sys/wait.h>
		105	#else
		106	# define WIN32_LEAN_AND_MEAN
		107	# include <windows.h>
		108	# ifndef EV_SELECT_IS_WINSOCKET
		109	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	110	# endif
50	#include <sys/time.h>	111	#endif
51	#include <time.h>
52		112
53	/**/	113	/**/
54		114
55	#ifndef EV_USE_MONOTONIC	115	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 0
57	#endif	121	#endif
58		122
59	#ifndef EV_USE_SELECT	123	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	124	# define EV_USE_SELECT 1
61	#endif	125	#endif
62		126
63	#ifndef EV_USEV_POLL	127	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	128	# ifdef _WIN32
		129	# define EV_USE_POLL 0
		130	# else
		131	# define EV_USE_POLL 1
		132	# endif
65	#endif	133	#endif
66		134
67	#ifndef EV_USE_EPOLL	135	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	136	# define EV_USE_EPOLL 0
69	#endif	137	#endif
70		138
71	#ifndef EV_USE_KQUEUE	139	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	140	# define EV_USE_KQUEUE 0
73	#endif	141	#endif
74		142
75	#ifndef EV_USE_REALTIME	143	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	144	# define EV_USE_PORT 0
77	#endif	145	#endif
78		146
79	/**/	147	/**/
		148
		149	/* darwin simply cannot be helped */
		150	#ifdef __APPLE__
		151	# undef EV_USE_POLL
		152	# undef EV_USE_KQUEUE
		153	#endif
80		154
81	#ifndef CLOCK_MONOTONIC	155	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	156	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	157	# define EV_USE_MONOTONIC 0
84	#endif	158	#endif
…		…
86	#ifndef CLOCK_REALTIME	160	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	161	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	162	# define EV_USE_REALTIME 0
89	#endif	163	#endif
90		164
		165	#if EV_SELECT_IS_WINSOCKET
		166	# include <winsock.h>
		167	#endif
		168
91	/**/	169	/**/
92		170
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	171	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	172	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	173	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	174	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		175
		176	#ifdef EV_H
		177	# include EV_H
		178	#else
98	#include "ev.h"	179	# include "ev.h"
		180	#endif
99		181
100	#if __GNUC__ >= 3	182	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	183	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	184	# define inline static inline
103	#else	185	#else
104	# define expect(expr,value) (expr)	186	# define expect(expr,value) (expr)
105	# define inline static	187	# define inline static
106	#endif	188	#endif
107		189
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	191	#define expect_true(expr) expect ((expr) != 0, 1)
110		192
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		195
		196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		197	#define EMPTY2(a,b) /* used to suppress some warnings */
		198
114	typedef struct ev_watcher *W;	199	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	200	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	201	typedef struct ev_watcher_time *WT;
117		202
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		204
122	static int have_monotonic; /* runtime */	205	#ifdef _WIN32
123		206	# include "ev_win32.c"
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128	static int activecnt; /* number of active events */
129
130	#if EV_USE_SELECT
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;
132	static int vec_max;
133	#endif
134
135	#if EV_USEV_POLL
136	static struct pollfd *polls;
137	static int pollmax, pollcnt;
138	static int pollidxs; / maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141
142	#if EV_USE_EPOLL
143	static int epoll_fd = -1;
144
145	static struct epoll_event *events;
146	static int eventmax;
147	#endif
148
149	#if EV_USE_KQUEUE
150	static int kqueue_fd;
151	static struct kevent *kqueue_changes;
152	static int kqueue_changemax, kqueue_changecnt;
153	static struct kevent *kqueue_events;
154	static int kqueue_eventmax;
155	#endif	207	#endif
156		208
157	/*****************************************************************************/	209	/*****************************************************************************/
158		210
159	inline ev_tstamp	211	static void (syserr_cb)(const char msg);
		212
		213	void ev_set_syserr_cb (void (cb)(const char msg))
		214	{
		215	syserr_cb = cb;
		216	}
		217
		218	static void
		219	syserr (const char *msg)
		220	{
		221	if (!msg)
		222	msg = "(libev) system error";
		223
		224	if (syserr_cb)
		225	syserr_cb (msg);
		226	else
		227	{
		228	perror (msg);
		229	abort ();
		230	}
		231	}
		232
		233	static void (alloc)(void *ptr, long size);
		234
		235	void ev_set_allocator (void (cb)(void *ptr, long size))
		236	{
		237	alloc = cb;
		238	}
		239
		240	static void *
		241	ev_realloc (void *ptr, long size)
		242	{
		243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		244
		245	if (!ptr && size)
		246	{
		247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		248	abort ();
		249	}
		250
		251	return ptr;
		252	}
		253
		254	#define ev_malloc(size) ev_realloc (0, (size))
		255	#define ev_free(ptr) ev_realloc ((ptr), 0)
		256
		257	/*****************************************************************************/
		258
		259	typedef struct
		260	{
		261	WL head;
		262	unsigned char events;
		263	unsigned char reify;
		264	#if EV_SELECT_IS_WINSOCKET
		265	SOCKET handle;
		266	#endif
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	ev_tstamp ev_rt_now;
		280	#define ev_rt_now ((loop)->ev_rt_now)
		281	#define VAR(name,decl) decl;
		282	#include "ev_vars.h"
		283	#undef VAR
		284	};
		285	#include "ev_wrap.h"
		286
		287	static struct ev_loop default_loop_struct;
		288	struct ev_loop *ev_default_loop_ptr;
		289
		290	#else
		291
		292	ev_tstamp ev_rt_now;
		293	#define VAR(name,decl) static decl;
		294	#include "ev_vars.h"
		295	#undef VAR
		296
		297	static int ev_default_loop_ptr;
		298
		299	#endif
		300
		301	/*****************************************************************************/
		302
		303	ev_tstamp
160	ev_time (void)	304	ev_time (void)
161	{	305	{
162	#if EV_USE_REALTIME	306	#if EV_USE_REALTIME
163	struct timespec ts;	307	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	308	clock_gettime (CLOCK_REALTIME, &ts);
…		…
183	#endif	327	#endif
184		328
185	return ev_time ();	329	return ev_time ();
186	}	330	}
187		331
		332	#if EV_MULTIPLICITY
188	ev_tstamp	333	ev_tstamp
189	ev_now (EV_P)	334	ev_now (EV_P)
190	{	335	{
191	return rt_now;	336	return ev_rt_now;
192	}	337	}
		338	#endif
193		339
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	340	#define array_roundsize(type,n) (((n) \| 4) & ~3)
195		341
196	#define array_needsize(base,cur,cnt,init) \	342	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	343	if (expect_false ((cnt) > cur)) \
198	{ \	344	{ \
199	int newcnt = cur; \	345	int newcnt = cur; \
200	do \	346	do \
201	{ \	347	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	348	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	349	} \
204	while ((cnt) > newcnt); \	350	while ((cnt) > newcnt); \
205	\	351	\
206	base = realloc (base, sizeof (base) (newcnt)); \	352	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	353	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	354	cur = newcnt; \
209	}	355	}
		356
		357	#define array_slim(type,stem) \
		358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		359	{ \
		360	stem ## max = array_roundsize (stem ## cnt >> 1); \
		361	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		363	}
		364
		365	#define array_free(stem, idx) \
		366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		367
211	/*****************************************************************************/	368	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		369
223	static void	370	static void
224	anfds_init (ANFD *base, int count)	371	anfds_init (ANFD *base, int count)
225	{	372	{
226	while (count--)	373	while (count--)
…		…
231		378
232	++base;	379	++base;
233	}	380	}
234	}	381	}
235		382
236	typedef struct	383	void
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)	384	ev_feed_event (EV_P_ void *w, int revents)
247	{	385	{
248	if (w->pending)	386	W w_ = (W)w;
		387
		388	if (expect_false (w_->pending))
249	{	389	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	390	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
251	return;	391	return;
252	}	392	}
253		393
254	w->pending = ++pendingcnt [ABSPRI (w)];	394	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	398	}
259		399
260	static void	400	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	401	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	402	{
263	int i;	403	int i;
264		404
265	for (i = 0; i < eventcnt; ++i)	405	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	406	ev_feed_event (EV_A_ events [i], type);
267	}	407	}
268		408
269	static void	409	inline void
270	fd_event (EV_P_ int fd, int events)	410	fd_event (EV_P_ int fd, int revents)
271	{	411	{
272	ANFD *anfd = anfds + fd;	412	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	413	struct ev_io *w;
274		414
275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	415	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
276	{	416	{
277	int ev = w->events & events;	417	int ev = w->events & revents;
278		418
279	if (ev)	419	if (ev)
280	event (EV_A_ (W)w, ev);	420	ev_feed_event (EV_A_ (W)w, ev);
281	}	421	}
		422	}
		423
		424	void
		425	ev_feed_fd_event (EV_P_ int fd, int revents)
		426	{
		427	fd_event (EV_A_ fd, revents);
282	}	428	}
283		429
284	/*****************************************************************************/	430	/*****************************************************************************/
285		431
286	static int *fdchanges;	432	inline void
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	433	fd_reify (EV_P)
291	{	434	{
292	int i;	435	int i;
293		436
294	for (i = 0; i < fdchangecnt; ++i)	437	for (i = 0; i < fdchangecnt; ++i)
…		…
300	int events = 0;	443	int events = 0;
301		444
302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	445	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
303	events \|= w->events;	446	events \|= w->events;
304		447
		448	#if EV_SELECT_IS_WINSOCKET
		449	if (events)
		450	{
		451	unsigned long argp;
		452	anfd->handle = _get_osfhandle (fd);
		453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		454	}
		455	#endif
		456
305	anfd->reify = 0;	457	anfd->reify = 0;
306		458
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	459	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	460	anfd->events = events;
311	}
312	}	461	}
313		462
314	fdchangecnt = 0;	463	fdchangecnt = 0;
315	}	464	}
316		465
317	static void	466	static void
318	fd_change (EV_P_ int fd)	467	fd_change (EV_P_ int fd)
319	{	468	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	469	if (expect_false (anfds [fd].reify))
321	return;	470	return;
322		471
323	anfds [fd].reify = 1;	472	anfds [fd].reify = 1;
324		473
325	++fdchangecnt;	474	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	476	fdchanges [fdchangecnt - 1] = fd;
328	}	477	}
329		478
330	static void	479	static void
331	fd_kill (EV_P_ int fd)	480	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	482	struct ev_io *w;
334		483
335	while ((w = (struct ev_io *)anfds [fd].head))	484	while ((w = (struct ev_io *)anfds [fd].head))
336	{	485	{
337	ev_io_stop (EV_A_ w);	486	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	487	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
339	}	488	}
		489	}
		490
		491	inline int
		492	fd_valid (int fd)
		493	{
		494	#ifdef _WIN32
		495	return _get_osfhandle (fd) != -1;
		496	#else
		497	return fcntl (fd, F_GETFD) != -1;
		498	#endif
340	}	499	}
341		500
342	/* called on EBADF to verify fds */	501	/* called on EBADF to verify fds */
343	static void	502	static void
344	fd_ebadf (EV_P)	503	fd_ebadf (EV_P)
345	{	504	{
346	int fd;	505	int fd;
347		506
348	for (fd = 0; fd < anfdmax; ++fd)	507	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	508	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	509	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	510	fd_kill (EV_A_ fd);
352	}	511	}
353		512
354	/* called on ENOMEM in select/poll to kill some fds and retry */	513	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	514	static void
356	fd_enomem (EV_P)	515	fd_enomem (EV_P)
357	{	516	{
358	int fd = anfdmax;	517	int fd;
359		518
360	while (fd--)	519	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	520	if (anfds [fd].events)
362	{	521	{
363	close (fd);
364	fd_kill (EV_A_ fd);	522	fd_kill (EV_A_ fd);
365	return;	523	return;
366	}	524	}
367	}	525	}
368		526
		527	/* usually called after fork if method needs to re-arm all fds from scratch */
		528	static void
		529	fd_rearm_all (EV_P)
		530	{
		531	int fd;
		532
		533	/* this should be highly optimised to not do anything but set a flag */
		534	for (fd = 0; fd < anfdmax; ++fd)
		535	if (anfds [fd].events)
		536	{
		537	anfds [fd].events = 0;
		538	fd_change (EV_A_ fd);
		539	}
		540	}
		541
369	/*****************************************************************************/	542	/*****************************************************************************/
370		543
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	544	static void
378	upheap (WT *timers, int k)	545	upheap (WT *heap, int k)
379	{	546	{
380	WT w = timers [k];	547	WT w = heap [k];
381		548
382	while (k && timers [k >> 1]->at > w->at)	549	while (k && heap [k >> 1]->at > w->at)
383	{	550	{
384	timers [k] = timers [k >> 1];	551	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
386	k >>= 1;	553	k >>= 1;
387	}	554	}
388		555
389	timers [k] = w;	556	heap [k] = w;
390	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
391		558
392	}	559	}
393		560
394	static void	561	static void
395	downheap (WT *timers, int N, int k)	562	downheap (WT *heap, int N, int k)
396	{	563	{
397	WT w = timers [k];	564	WT w = heap [k];
398		565
399	while (k < (N >> 1))	566	while (k < (N >> 1))
400	{	567	{
401	int j = k << 1;	568	int j = k << 1;
402		569
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	571	++j;
405		572
406	if (w->at <= timers [j]->at)	573	if (w->at <= heap [j]->at)
407	break;	574	break;
408		575
409	timers [k] = timers [j];	576	heap [k] = heap [j];
410	timers [k]->active = k + 1;	577	((W)heap [k])->active = k + 1;
411	k = j;	578	k = j;
412	}	579	}
413		580
414	timers [k] = w;	581	heap [k] = w;
415	timers [k]->active = k + 1;	582	((W)heap [k])->active = k + 1;
		583	}
		584
		585	inline void
		586	adjustheap (WT *heap, int N, int k)
		587	{
		588	upheap (heap, k);
		589	downheap (heap, N, k);
416	}	590	}
417		591
418	/*****************************************************************************/	592	/*****************************************************************************/
419		593
420	typedef struct	594	typedef struct
421	{	595	{
422	struct ev_watcher_list *head;	596	WL head;
423	sig_atomic_t volatile gotsig;	597	sig_atomic_t volatile gotsig;
424	} ANSIG;	598	} ANSIG;
425		599
426	static ANSIG *signals;	600	static ANSIG *signals;
427	static int signalmax;	601	static int signalmax;
…		…
443	}	617	}
444		618
445	static void	619	static void
446	sighandler (int signum)	620	sighandler (int signum)
447	{	621	{
		622	#if _WIN32
		623	signal (signum, sighandler);
		624	#endif
		625
448	signals [signum - 1].gotsig = 1;	626	signals [signum - 1].gotsig = 1;
449		627
450	if (!gotsig)	628	if (!gotsig)
451	{	629	{
452	int old_errno = errno;	630	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	633	errno = old_errno;
456	}	634	}
457	}	635	}
458		636
		637	void
		638	ev_feed_signal_event (EV_P_ int signum)
		639	{
		640	WL w;
		641
		642	#if EV_MULTIPLICITY
		643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		644	#endif
		645
		646	--signum;
		647
		648	if (signum < 0 \|\| signum >= signalmax)
		649	return;
		650
		651	signals [signum].gotsig = 0;
		652
		653	for (w = signals [signum].head; w; w = w->next)
		654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		655	}
		656
459	static void	657	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	659	{
462	struct ev_watcher_list *w;
463	int signum;	660	int signum;
464		661
465	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	663	gotsig = 0;
467		664
468	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
470	{	667	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;	668	}
472		669
473	for (w = signals [signum].head; w; w = w->next)	670	static void
474	event (EV_A_ (W)w, EV_SIGNAL);	671	fd_intern (int fd)
475	}	672	{
		673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
		677	fcntl (fd, F_SETFD, FD_CLOEXEC);
		678	fcntl (fd, F_SETFL, O_NONBLOCK);
		679	#endif
476	}	680	}
477		681
478	static void	682	static void
479	siginit (EV_P)	683	siginit (EV_P)
480	{	684	{
481	#ifndef WIN32	685	fd_intern (sigpipe [0]);
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	686	fd_intern (sigpipe [1]);
483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485	/* rather than sort out wether we really need nb, set it */
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif
489		687
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
		690	ev_unref (EV_A); /* child watcher should not keep loop alive */
492	}	691	}
493		692
494	/*****************************************************************************/	693	/*****************************************************************************/
495		694
496	static struct ev_idle **idles;
497	static int idlemax, idlecnt;
498
499	static struct ev_prepare **prepares;
500	static int preparemax, preparecnt;
501
502	static struct ev_check **checks;
503	static int checkmax, checkcnt;
504
505	/*****************************************************************************/
506
507	static struct ev_child *childs [PID_HASHSIZE];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
508	static struct ev_signal childev;	699	static struct ev_signal childev;
509
510	#ifndef WIN32
511		700
512	#ifndef WCONTINUED	701	#ifndef WCONTINUED
513	# define WCONTINUED 0	702	# define WCONTINUED 0
514	#endif	703	#endif
515		704
…		…
519	struct ev_child *w;	708	struct ev_child *w;
520		709
521	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	710	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
522	if (w->pid == pid \|\| !w->pid)	711	if (w->pid == pid \|\| !w->pid)
523	{	712	{
524	w->priority = sw->priority; /* need to do it now */	713	ev_priority (w) = ev_priority (sw); /* need to do it now */
525	w->rpid = pid;	714	w->rpid = pid;
526	w->rstatus = status;	715	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	717	}
529	}	718	}
530		719
531	static void	720	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	721	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
534	int pid, status;	723	int pid, status;
535		724
536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	725	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
537	{	726	{
538	/* make sure we are called again until all childs have been reaped */	727	/* make sure we are called again until all childs have been reaped */
539	event (EV_A_ (W)sw, EV_SIGNAL);	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		729
541	child_reap (EV_A_ sw, pid, pid, status);	730	child_reap (EV_A_ sw, pid, pid, status);
542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543	}	732	}
544	}	733	}
545		734
546	#endif	735	#endif
547		736
548	/*****************************************************************************/	737	/*****************************************************************************/
549		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
550	#if EV_USE_KQUEUE	742	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	743	# include "ev_kqueue.c"
552	#endif	744	#endif
553	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	746	# include "ev_epoll.c"
555	#endif	747	#endif
556	#if EV_USEV_POLL	748	#if EV_USE_POLL
557	# include "ev_poll.c"	749	# include "ev_poll.c"
558	#endif	750	#endif
559	#if EV_USE_SELECT	751	#if EV_USE_SELECT
560	# include "ev_select.c"	752	# include "ev_select.c"
561	#endif	753	#endif
…		…
574		766
575	/* return true if we are running with elevated privileges and should ignore env variables */	767	/* return true if we are running with elevated privileges and should ignore env variables */
576	static int	768	static int
577	enable_secure (void)	769	enable_secure (void)
578	{	770	{
579	#ifdef WIN32	771	#ifdef _WIN32
580	return 0;	772	return 0;
581	#else	773	#else
582	return getuid () != geteuid ()	774	return getuid () != geteuid ()
583	\|\| getgid () != getegid ();	775	\|\| getgid () != getegid ();
584	#endif	776	#endif
585	}	777	}
586		778
587	int	779	unsigned int
588	ev_method (EV_P)	780	ev_method (EV_P)
589	{	781	{
590	return method;	782	return method;
591	}	783	}
592		784
593	int	785	static void
594	ev_init (EV_P_ int methods)	786	loop_init (EV_P_ unsigned int flags)
595	{	787	{
596	if (!method)	788	if (!method)
597	{	789	{
598	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
599	{	791	{
…		…
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	794	have_monotonic = 1;
603	}	795	}
604	#endif	796	#endif
605		797
606	rt_now = ev_time ();	798	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	799	mn_now = get_clock ();
608	now_floor = mn_now;	800	now_floor = mn_now;
609	diff = rt_now - mn_now;	801	rtmn_diff = ev_rt_now - mn_now;
610		802
611	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
612	return 0;	804	flags = atoi (getenv ("LIBEV_FLAGS"));
613		805
614	if (methods == EVMETHOD_AUTO)	806	if (!(flags & 0x0000ffff))
615	if (!enable_secure () && getenv ("LIBmethodS"))	807	flags \|= 0x0000ffff;
616	methods = atoi (getenv ("LIBmethodS"));
617	else
618	methods = EVMETHOD_ANY;
619		808
620	method = 0;	809	method = 0;
		810	#if EV_USE_PORT
		811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		812	#endif
621	#if EV_USE_KQUEUE	813	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
623	#endif	815	#endif
624	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
626	#endif	818	#endif
627	#if EV_USEV_POLL	819	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
629	#endif	821	#endif
630	#if EV_USE_SELECT	822	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
632	#endif	824	#endif
633		825
		826	ev_init (&sigev, sigcb);
		827	ev_set_priority (&sigev, EV_MAXPRI);
		828	}
		829	}
		830
		831	static void
		832	loop_destroy (EV_P)
		833	{
		834	int i;
		835
		836	#if EV_USE_PORT
		837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		838	#endif
		839	#if EV_USE_KQUEUE
		840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		841	#endif
		842	#if EV_USE_EPOLL
		843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		844	#endif
		845	#if EV_USE_POLL
		846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		847	#endif
		848	#if EV_USE_SELECT
		849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		850	#endif
		851
		852	for (i = NUMPRI; i--; )
		853	array_free (pending, [i]);
		854
		855	/* have to use the microsoft-never-gets-it-right macro */
		856	array_free (fdchange, EMPTY0);
		857	array_free (timer, EMPTY0);
		858	#if EV_PERIODICS
		859	array_free (periodic, EMPTY0);
		860	#endif
		861	array_free (idle, EMPTY0);
		862	array_free (prepare, EMPTY0);
		863	array_free (check, EMPTY0);
		864
		865	method = 0;
		866	}
		867
		868	static void
		869	loop_fork (EV_P)
		870	{
		871	#if EV_USE_PORT
		872	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		873	#endif
		874	#if EV_USE_KQUEUE
		875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		876	#endif
		877	#if EV_USE_EPOLL
		878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		879	#endif
		880
		881	if (ev_is_active (&sigev))
		882	{
		883	/* default loop */
		884
		885	ev_ref (EV_A);
		886	ev_io_stop (EV_A_ &sigev);
		887	close (sigpipe [0]);
		888	close (sigpipe [1]);
		889
		890	while (pipe (sigpipe))
		891	syserr ("(libev) error creating pipe");
		892
		893	siginit (EV_A);
		894	}
		895
		896	postfork = 0;
		897	}
		898
		899	#if EV_MULTIPLICITY
		900	struct ev_loop *
		901	ev_loop_new (unsigned int flags)
		902	{
		903	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		904
		905	memset (loop, 0, sizeof (struct ev_loop));
		906
		907	loop_init (EV_A_ flags);
		908
		909	if (ev_method (EV_A))
		910	return loop;
		911
		912	return 0;
		913	}
		914
		915	void
		916	ev_loop_destroy (EV_P)
		917	{
		918	loop_destroy (EV_A);
		919	ev_free (loop);
		920	}
		921
		922	void
		923	ev_loop_fork (EV_P)
		924	{
		925	postfork = 1;
		926	}
		927
		928	#endif
		929
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *
		932	ev_default_loop_init (unsigned int flags)
		933	#else
		934	int
		935	ev_default_loop (unsigned int flags)
		936	#endif
		937	{
		938	if (sigpipe [0] == sigpipe [1])
		939	if (pipe (sigpipe))
		940	return 0;
		941
		942	if (!ev_default_loop_ptr)
		943	{
		944	#if EV_MULTIPLICITY
		945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		946	#else
		947	ev_default_loop_ptr = 1;
		948	#endif
		949
		950	loop_init (EV_A_ flags);
		951
634	if (method)	952	if (ev_method (EV_A))
635	{	953	{
636	ev_watcher_init (&sigev, sigcb);
637	ev_set_priority (&sigev, EV_MAXPRI);
638	siginit (EV_A);	954	siginit (EV_A);
639		955
640	#ifndef WIN32	956	#ifndef _WIN32
641	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
642	ev_set_priority (&childev, EV_MAXPRI);	958	ev_set_priority (&childev, EV_MAXPRI);
643	ev_signal_start (EV_A_ &childev);	959	ev_signal_start (EV_A_ &childev);
		960	ev_unref (EV_A); /* child watcher should not keep loop alive */
644	#endif	961	#endif
645	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
646	}	965	}
647		966
648	return method;	967	return ev_default_loop_ptr;
		968	}
		969
		970	void
		971	ev_default_destroy (void)
		972	{
		973	#if EV_MULTIPLICITY
		974	struct ev_loop *loop = ev_default_loop_ptr;
		975	#endif
		976
		977	#ifndef _WIN32
		978	ev_ref (EV_A); /* child watcher */
		979	ev_signal_stop (EV_A_ &childev);
		980	#endif
		981
		982	ev_ref (EV_A); /* signal watcher */
		983	ev_io_stop (EV_A_ &sigev);
		984
		985	close (sigpipe [0]); sigpipe [0] = 0;
		986	close (sigpipe [1]); sigpipe [1] = 0;
		987
		988	loop_destroy (EV_A);
		989	}
		990
		991	void
		992	ev_default_fork (void)
		993	{
		994	#if EV_MULTIPLICITY
		995	struct ev_loop *loop = ev_default_loop_ptr;
		996	#endif
		997
		998	if (method)
		999	postfork = 1;
649	}	1000	}
650		1001
651	/*****************************************************************************/	1002	/*****************************************************************************/
652		1003
653	void
654	ev_fork_prepare (void)
655	{
656	/* nop */
657	}
658
659	void
660	ev_fork_parent (void)
661	{
662	/* nop */
663	}
664
665	void
666	ev_fork_child (void)
667	{
668	#if EV_USE_EPOLL
669	if (method == EVMETHOD_EPOLL)
670	epoll_postfork_child ();
671	#endif
672
673	ev_io_stop (&sigev);
674	close (sigpipe [0]);
675	close (sigpipe [1]);
676	pipe (sigpipe);
677	siginit ();
678	}
679
680	/*****************************************************************************/
681
682	static void	1004	static int
		1005	any_pending (EV_P)
		1006	{
		1007	int pri;
		1008
		1009	for (pri = NUMPRI; pri--; )
		1010	if (pendingcnt [pri])
		1011	return 1;
		1012
		1013	return 0;
		1014	}
		1015
		1016	inline void
683	call_pending (EV_P)	1017	call_pending (EV_P)
684	{	1018	{
685	int pri;	1019	int pri;
686		1020
687	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
688	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
689	{	1023	{
690	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691		1025
692	if (p->w)	1026	if (expect_true (p->w))
693	{	1027	{
694	p->w->pending = 0;	1028	p->w->pending = 0;
695	p->w->cb (EV_A_ p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
696	}	1030	}
697	}	1031	}
698	}	1032	}
699		1033
700	static void	1034	inline void
701	timers_reify (EV_P)	1035	timers_reify (EV_P)
702	{	1036	{
703	while (timercnt && timers [0]->at <= mn_now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
704	{	1038	{
705	struct ev_timer *w = timers [0];	1039	struct ev_timer *w = timers [0];
		1040
		1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));
706		1042
707	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
708	if (w->repeat)	1044	if (w->repeat)
709	{	1045	{
710	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1047
711	w->at = mn_now + w->repeat;	1048	((WT)w)->at += w->repeat;
		1049	if (((WT)w)->at < mn_now)
		1050	((WT)w)->at = mn_now;
		1051
712	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
713	}	1053	}
714	else	1054	else
715	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716		1056
717	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718	}	1058	}
719	}	1059	}
720		1060
721	static void	1061	#if EV_PERIODICS
		1062	inline void
722	periodics_reify (EV_P)	1063	periodics_reify (EV_P)
723	{	1064	{
724	while (periodiccnt && periodics [0]->at <= rt_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725	{	1066	{
726	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
727		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
728	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
729	if (w->interval)	1072	if (w->reschedule_cb)
730	{	1073	{
		1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1076	downheap ((WT *)periodics, periodiccnt, 0);
		1077	}
		1078	else if (w->interval)
		1079	{
731	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
732	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733	downheap ((WT *)periodics, periodiccnt, 0);	1082	downheap ((WT *)periodics, periodiccnt, 0);
734	}	1083	}
735	else	1084	else
736	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737		1086
738	event (EV_A_ (W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739	}	1088	}
740	}	1089	}
741		1090
742	static void	1091	static void
743	periodics_reschedule (EV_P_ ev_tstamp diff)	1092	periodics_reschedule (EV_P)
744	{	1093	{
745	int i;	1094	int i;
746		1095
747	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
748	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
749	{	1098	{
750	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
751		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752	if (w->interval)	1103	else if (w->interval)
753	{
754	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
755
756	if (fabs (diff) >= 1e-4)
757	{
758	ev_periodic_stop (EV_A_ w);
759	ev_periodic_start (EV_A_ w);
760
761	i = 0; /* restart loop, inefficient, but time jumps should be rare */
762	}
763	}
764	}	1105	}
		1106
		1107	/* now rebuild the heap */
		1108	for (i = periodiccnt >> 1; i--; )
		1109	downheap ((WT *)periodics, periodiccnt, i);
765	}	1110	}
		1111	#endif
766		1112
767	inline int	1113	inline int
768	time_update_monotonic (EV_P)	1114	time_update_monotonic (EV_P)
769	{	1115	{
770	mn_now = get_clock ();	1116	mn_now = get_clock ();
771		1117
772	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773	{	1119	{
774	rt_now = mn_now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
775	return 0;	1121	return 0;
776	}	1122	}
777	else	1123	else
778	{	1124	{
779	now_floor = mn_now;	1125	now_floor = mn_now;
780	rt_now = ev_time ();	1126	ev_rt_now = ev_time ();
781	return 1;	1127	return 1;
782	}	1128	}
783	}	1129	}
784		1130
785	static void	1131	inline void
786	time_update (EV_P)	1132	time_update (EV_P)
787	{	1133	{
788	int i;	1134	int i;
789		1135
790	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
792	{	1138	{
793	if (time_update_monotonic (EV_A))	1139	if (time_update_monotonic (EV_A))
794	{	1140	{
795	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
796		1142
797	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
798	{	1144	{
799	diff = rt_now - mn_now;	1145	rtmn_diff = ev_rt_now - mn_now;
800		1146
801	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802	return; /* all is well */	1148	return; /* all is well */
803		1149
804	rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
805	mn_now = get_clock ();	1151	mn_now = get_clock ();
806	now_floor = mn_now;	1152	now_floor = mn_now;
807	}	1153	}
808		1154
		1155	# if EV_PERIODICS
809	periodics_reschedule (EV_A_ diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
810	/* no timer adjustment, as the monotonic clock doesn't jump */	1158	/* no timer adjustment, as the monotonic clock doesn't jump */
		1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811	}	1160	}
812	}	1161	}
813	else	1162	else
814	#endif	1163	#endif
815	{	1164	{
816	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
817		1166
818	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1167	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819	{	1168	{
		1169	#if EV_PERIODICS
820	periodics_reschedule (EV_A_ rt_now - mn_now);	1170	periodics_reschedule (EV_A);
		1171	#endif
821		1172
822	/* adjust timers. this is easy, as the offset is the same for all */	1173	/* adjust timers. this is easy, as the offset is the same for all */
823	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
824	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
825	}	1176	}
826		1177
827	mn_now = rt_now;	1178	mn_now = ev_rt_now;
828	}	1179	}
829	}	1180	}
830		1181
831	void	1182	void
832	ev_ref (EV_P)	1183	ev_ref (EV_P)
…		…
846	ev_loop (EV_P_ int flags)	1197	ev_loop (EV_P_ int flags)
847	{	1198	{
848	double block;	1199	double block;
849	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
850		1201
851	do	1202	while (activecnt)
852	{	1203	{
853	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
854	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
855	{	1206	{
856	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857	call_pending (EV_A);	1208	call_pending (EV_A);
858	}	1209	}
859		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
860	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
861	fd_reify (EV_A);	1216	fd_reify (EV_A);
862		1217
863	/* calculate blocking time */	1218	/* calculate blocking time */
864		1219
865	/* we only need this for !monotonic clockor timers, but as we basically	1220	/* we only need this for !monotonic clock or timers, but as we basically
866	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
867	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
868	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
869	time_update_monotonic (EV_A);	1224	time_update_monotonic (EV_A);
870	else	1225	else
871	#endif	1226	#endif
872	{	1227	{
873	rt_now = ev_time ();	1228	ev_rt_now = ev_time ();
874	mn_now = rt_now;	1229	mn_now = ev_rt_now;
875	}	1230	}
876		1231
877	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1232	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
878	block = 0.;	1233	block = 0.;
879	else	1234	else
880	{	1235	{
881	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
882		1237
883	if (timercnt)	1238	if (timercnt)
884	{	1239	{
885	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886	if (block > to) block = to;	1241	if (block > to) block = to;
887	}	1242	}
888		1243
		1244	#if EV_PERIODICS
889	if (periodiccnt)	1245	if (periodiccnt)
890	{	1246	{
891	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
892	if (block > to) block = to;	1248	if (block > to) block = to;
893	}	1249	}
		1250	#endif
894		1251
895	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
896	}	1253	}
897		1254
898	method_poll (EV_A_ block);	1255	method_poll (EV_A_ block);
899		1256
900	/* update rt_now, do magic */	1257	/* update ev_rt_now, do magic */
901	time_update (EV_A);	1258	time_update (EV_A);
902		1259
903	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
904	timers_reify (EV_A); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
905	periodics_reify (EV_A); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
906		1265
907	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
908	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
909	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910		1269
911	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
912	if (checkcnt)	1271	if (expect_false (checkcnt))
913	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914		1273
915	call_pending (EV_A);	1274	call_pending (EV_A);
916	printf ("activecnt %d\n", activecnt);//D	1275
		1276	if (expect_false (loop_done))
		1277	break;
917	}	1278	}
918	while (activecnt && !loop_done);
919		1279
920	if (loop_done != 2)	1280	if (loop_done != 2)
921	loop_done = 0;	1281	loop_done = 0;
922	}	1282	}
923		1283
…		…
983	void	1343	void
984	ev_io_start (EV_P_ struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
985	{	1345	{
986	int fd = w->fd;	1346	int fd = w->fd;
987		1347
988	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
989	return;	1349	return;
990		1350
991	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
992		1352
993	ev_start (EV_A_ (W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
994	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
996		1356
997	fd_change (EV_A_ fd);	1357	fd_change (EV_A_ fd);
998	}	1358	}
999		1359
1000	void	1360	void
1001	ev_io_stop (EV_P_ struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
1002	{	1362	{
1003	ev_clear_pending (EV_A_ (W)w);	1363	ev_clear_pending (EV_A_ (W)w);
1004	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
1005	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1006		1368
1007	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1009		1371
1010	fd_change (EV_A_ w->fd);	1372	fd_change (EV_A_ w->fd);
1011	}	1373	}
1012		1374
1013	void	1375	void
1014	ev_timer_start (EV_P_ struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
1015	{	1377	{
1016	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
1017	return;	1379	return;
1018		1380
1019	w->at += mn_now;	1381	((WT)w)->at += mn_now;
1020		1382
1021	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022		1384
1023	ev_start (EV_A_ (W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
1024	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1025	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
1026	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027	}	1391	}
1028		1392
1029	void	1393	void
1030	ev_timer_stop (EV_P_ struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
1031	{	1395	{
1032	ev_clear_pending (EV_A_ (W)w);	1396	ev_clear_pending (EV_A_ (W)w);
1033	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
1034	return;	1398	return;
1035		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
1036	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
1037	{	1403	{
1038	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
1039	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040	}	1406	}
1041		1407
1042	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
1043		1409
1044	ev_stop (EV_A_ (W)w);	1410	ev_stop (EV_A_ (W)w);
1045	}	1411	}
1046		1412
1047	void	1413	void
…		…
1049	{	1415	{
1050	if (ev_is_active (w))	1416	if (ev_is_active (w))
1051	{	1417	{
1052	if (w->repeat)	1418	if (w->repeat)
1053	{	1419	{
1054	w->at = mn_now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
1055	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056	}	1422	}
1057	else	1423	else
1058	ev_timer_stop (EV_A_ w);	1424	ev_timer_stop (EV_A_ w);
1059	}	1425	}
1060	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
1061	ev_timer_start (EV_A_ w);	1429	ev_timer_start (EV_A_ w);
		1430	}
1062	}	1431	}
1063		1432
		1433	#if EV_PERIODICS
1064	void	1434	void
1065	ev_periodic_start (EV_P_ struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
1066	{	1436	{
1067	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1068	return;	1438	return;
1069		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
1070	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072	/* this formula differs from the one in periodic_reify because we do not always round up */	1445	/* this formula differs from the one in periodic_reify because we do not always round up */
1073	if (w->interval)
1074	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1447	}
1075		1448
1076	ev_start (EV_A_ (W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
1077	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1078	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
1079	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080	}	1455	}
1081		1456
1082	void	1457	void
1083	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084	{	1459	{
1085	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1086	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1087	return;	1462	return;
1088		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
1089	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
1090	{	1467	{
1091	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093	}	1470	}
1094		1471
		1472	ev_stop (EV_A_ (W)w);
		1473	}
		1474
		1475	void
		1476	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1477	{
		1478	/* TODO: use adjustheap and recalculation */
		1479	ev_periodic_stop (EV_A_ w);
		1480	ev_periodic_start (EV_A_ w);
		1481	}
		1482	#endif
		1483
		1484	void
		1485	ev_idle_start (EV_P_ struct ev_idle *w)
		1486	{
		1487	if (expect_false (ev_is_active (w)))
		1488	return;
		1489
		1490	ev_start (EV_A_ (W)w, ++idlecnt);
		1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1492	idles [idlecnt - 1] = w;
		1493	}
		1494
		1495	void
		1496	ev_idle_stop (EV_P_ struct ev_idle *w)
		1497	{
		1498	ev_clear_pending (EV_A_ (W)w);
		1499	if (expect_false (!ev_is_active (w)))
		1500	return;
		1501
		1502	idles [((W)w)->active - 1] = idles [--idlecnt];
		1503	ev_stop (EV_A_ (W)w);
		1504	}
		1505
		1506	void
		1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1508	{
		1509	if (expect_false (ev_is_active (w)))
		1510	return;
		1511
		1512	ev_start (EV_A_ (W)w, ++preparecnt);
		1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1514	prepares [preparecnt - 1] = w;
		1515	}
		1516
		1517	void
		1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1519	{
		1520	ev_clear_pending (EV_A_ (W)w);
		1521	if (expect_false (!ev_is_active (w)))
		1522	return;
		1523
		1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1525	ev_stop (EV_A_ (W)w);
		1526	}
		1527
		1528	void
		1529	ev_check_start (EV_P_ struct ev_check *w)
		1530	{
		1531	if (expect_false (ev_is_active (w)))
		1532	return;
		1533
		1534	ev_start (EV_A_ (W)w, ++checkcnt);
		1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1536	checks [checkcnt - 1] = w;
		1537	}
		1538
		1539	void
		1540	ev_check_stop (EV_P_ struct ev_check *w)
		1541	{
		1542	ev_clear_pending (EV_A_ (W)w);
		1543	if (expect_false (!ev_is_active (w)))
		1544	return;
		1545
		1546	checks [((W)w)->active - 1] = checks [--checkcnt];
1095	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1096	}	1548	}
1097		1549
1098	#ifndef SA_RESTART	1550	#ifndef SA_RESTART
1099	# define SA_RESTART 0	1551	# define SA_RESTART 0
1100	#endif	1552	#endif
1101		1553
1102	void	1554	void
1103	ev_signal_start (EV_P_ struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
1104	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
1105	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1106	return;	1561	return;
1107		1562
1108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109		1564
1110	ev_start (EV_A_ (W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1111	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113		1568
1114	if (!w->next)	1569	if (!((WL)w)->next)
1115	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1116	struct sigaction sa;	1574	struct sigaction sa;
1117	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1118	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1119	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1121	}	1580	}
1122	}	1581	}
1123		1582
1124	void	1583	void
1125	ev_signal_stop (EV_P_ struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1126	{	1585	{
1127	ev_clear_pending (EV_A_ (W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1128	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1129	return;	1588	return;
1130		1589
1131	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1132	ev_stop (EV_A_ (W)w);	1591	ev_stop (EV_A_ (W)w);
1133		1592
1134	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1135	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1136	}	1595	}
1137		1596
1138	void	1597	void
1139	ev_idle_start (EV_P_ struct ev_idle *w)
1140	{
1141	if (ev_is_active (w))
1142	return;
1143
1144	ev_start (EV_A_ (W)w, ++idlecnt);
1145	array_needsize (idles, idlemax, idlecnt, );
1146	idles [idlecnt - 1] = w;
1147	}
1148
1149	void
1150	ev_idle_stop (EV_P_ struct ev_idle *w)
1151	{
1152	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))
1154	return;
1155
1156	idles [w->active - 1] = idles [--idlecnt];
1157	ev_stop (EV_A_ (W)w);
1158	}
1159
1160	void
1161	ev_prepare_start (EV_P_ struct ev_prepare *w)
1162	{
1163	if (ev_is_active (w))
1164	return;
1165
1166	ev_start (EV_A_ (W)w, ++preparecnt);
1167	array_needsize (prepares, preparemax, preparecnt, );
1168	prepares [preparecnt - 1] = w;
1169	}
1170
1171	void
1172	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1173	{
1174	ev_clear_pending (EV_A_ (W)w);
1175	if (ev_is_active (w))
1176	return;
1177
1178	prepares [w->active - 1] = prepares [--preparecnt];
1179	ev_stop (EV_A_ (W)w);
1180	}
1181
1182	void
1183	ev_check_start (EV_P_ struct ev_check *w)
1184	{
1185	if (ev_is_active (w))
1186	return;
1187
1188	ev_start (EV_A_ (W)w, ++checkcnt);
1189	array_needsize (checks, checkmax, checkcnt, );
1190	checks [checkcnt - 1] = w;
1191	}
1192
1193	void
1194	ev_check_stop (EV_P_ struct ev_check *w)
1195	{
1196	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))
1198	return;
1199
1200	checks [w->active - 1] = checks [--checkcnt];
1201	ev_stop (EV_A_ (W)w);
1202	}
1203
1204	void
1205	ev_child_start (EV_P_ struct ev_child *w)	1598	ev_child_start (EV_P_ struct ev_child *w)
1206	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1207	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1208	return;	1604	return;
1209		1605
1210	ev_start (EV_A_ (W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1211	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212	}	1608	}
1213		1609
1214	void	1610	void
1215	ev_child_stop (EV_P_ struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1216	{	1612	{
1217	ev_clear_pending (EV_A_ (W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1218	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1219	return;	1615	return;
1220		1616
1221	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1222	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1223	}	1619	}
…		…
1238	void (cb)(int revents, void arg) = once->cb;	1634	void (cb)(int revents, void arg) = once->cb;
1239	void *arg = once->arg;	1635	void *arg = once->arg;
1240		1636
1241	ev_io_stop (EV_A_ &once->io);	1637	ev_io_stop (EV_A_ &once->io);
1242	ev_timer_stop (EV_A_ &once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1243	free (once);	1639	ev_free (once);
1244		1640
1245	cb (revents, arg);	1641	cb (revents, arg);
1246	}	1642	}
1247		1643
1248	static void	1644	static void
…		…
1258	}	1654	}
1259		1655
1260	void	1656	void
1261	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1657	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1262	{	1658	{
1263	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1264		1660
1265	if (!once)	1661	if (expect_false (!once))
		1662	{
1266	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1663	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1267	else	1664	return;
1268	{	1665	}
		1666
1269	once->cb = cb;	1667	once->cb = cb;
1270	once->arg = arg;	1668	once->arg = arg;
1271		1669
1272	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1273	if (fd >= 0)	1671	if (fd >= 0)
1274	{	1672	{
1275	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1276	ev_io_start (EV_A_ &once->io);	1674	ev_io_start (EV_A_ &once->io);
1277	}	1675	}
1278		1676
1279	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1280	if (timeout >= 0.)	1678	if (timeout >= 0.)
1281	{	1679	{
1282	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1283	ev_timer_start (EV_A_ &once->to);	1681	ev_timer_start (EV_A_ &once->to);
1284	}
1285	}
1286	}
1287
1288	/*****************************************************************************/
1289
1290	#if 0
1291
1292	struct ev_io wio;
1293
1294	static void
1295	sin_cb (struct ev_io *w, int revents)
1296	{
1297	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298	}
1299
1300	static void
1301	ocb (struct ev_timer *w, int revents)
1302	{
1303	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304	ev_timer_stop (w);
1305	ev_timer_start (w);
1306	}
1307
1308	static void
1309	scb (struct ev_signal *w, int revents)
1310	{
1311	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312	ev_io_stop (&wio);
1313	ev_io_start (&wio);
1314	}
1315
1316	static void
1317	gcb (struct ev_signal *w, int revents)
1318	{
1319	fprintf (stderr, "generic %x\n", revents);
1320
1321	}
1322
1323	int main (void)
1324	{
1325	ev_init (0);
1326
1327	ev_io_init (&wio, sin_cb, 0, EV_READ);
1328	ev_io_start (&wio);
1329
1330	struct ev_timer t[10000];
1331
1332	#if 0
1333	int i;
1334	for (i = 0; i < 10000; ++i)
1335	{	1682	}
1336	struct ev_timer *w = t + i;
1337	ev_watcher_init (w, ocb, i);
1338	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339	ev_timer_start (w);
1340	if (drand48 () < 0.5)
1341	ev_timer_stop (w);
1342	}
1343	#endif
1344
1345	struct ev_timer t1;
1346	ev_timer_init (&t1, ocb, 5, 10);
1347	ev_timer_start (&t1);
1348
1349	struct ev_signal sig;
1350	ev_signal_init (&sig, scb, SIGQUIT);
1351	ev_signal_start (&sig);
1352
1353	struct ev_check cw;
1354	ev_check_init (&cw, gcb);
1355	ev_check_start (&cw);
1356
1357	struct ev_idle iw;
1358	ev_idle_init (&iw, gcb);
1359	ev_idle_start (&iw);
1360
1361	ev_loop (0);
1362
1363	return 0;
1364	}	1683	}
1365		1684
		1685	#ifdef __cplusplus
		1686	}
1366	#endif	1687	#endif
1367		1688
1368
1369
1370

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Comparing libev/ev.c (file contents): Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs. Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC