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

Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.119 by root, Fri Nov 16 01:43:52 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
33	#endif	68	#endif
34		69
35	#include <math.h>	70	#include <math.h>
36	#include <stdlib.h>	71	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	72	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	73	#include <stddef.h>
41		74
42	#include <stdio.h>	75	#include <stdio.h>
43		76
44	#include <assert.h>	77	#include <assert.h>
45	#include <errno.h>	78	#include <errno.h>
46	#include <sys/types.h>	79	#include <sys/types.h>
		80	#include <time.h>
		81
		82	#include <signal.h>
		83
47	#ifndef WIN32	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
48	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	93	# endif
50	#include <sys/time.h>	94	#endif
51	#include <time.h>
52		95
53	/**/	96	/**/
54		97
55	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 1
57	#endif	100	#endif
58		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 1
		104	#endif
		105
59	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
		108	# define EV_SELECT_USE_FD_SET 1
61	#endif	109	#endif
62		110
63	#ifndef EV_USE_POLL	111	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	112	# ifdef _WIN32
		113	# define EV_USE_POLL 0
		114	# else
		115	# define EV_USE_POLL 1
		116	# endif
65	#endif	117	#endif
66		118
67	#ifndef EV_USE_EPOLL	119	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	120	# define EV_USE_EPOLL 0
69	#endif	121	#endif
70		122
71	#ifndef EV_USE_KQUEUE	123	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	124	# define EV_USE_KQUEUE 0
73	#endif	125	#endif
74		126
75	#ifndef EV_USE_REALTIME	127	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	128	# define EV_USE_PORT 0
77	#endif	129	#endif
78		130
79	/**/	131	/**/
		132
		133	/* darwin simply cannot be helped */
		134	#ifdef __APPLE__
		135	# undef EV_USE_POLL
		136	# undef EV_USE_KQUEUE
		137	#endif
80		138
81	#ifndef CLOCK_MONOTONIC	139	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	140	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	141	# define EV_USE_MONOTONIC 0
84	#endif	142	#endif
85		143
86	#ifndef CLOCK_REALTIME	144	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	145	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	146	# define EV_USE_REALTIME 0
		147	#endif
		148
		149	#if EV_SELECT_IS_WINSOCKET
		150	# include <winsock.h>
89	#endif	151	#endif
90		152
91	/**/	153	/**/
92		154
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	155	#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) */	156	#define MAX_BLOCKTIME 59.731 /* 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 */	157	#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 */	158	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		159
		160	#ifdef EV_H
		161	# include EV_H
		162	#else
98	#include "ev.h"	163	# include "ev.h"
		164	#endif
99		165
100	#if __GNUC__ >= 3	166	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	167	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	168	# define inline inline
103	#else	169	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	175	#define expect_true(expr) expect ((expr) != 0, 1)
110		176
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		179
		180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		181	#define EMPTY2(a,b) /* used to suppress some warnings */
		182
114	typedef struct ev_watcher *W;	183	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	184	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	185	typedef struct ev_watcher_time *WT;
117		186
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		188
		189	#ifdef _WIN32
		190	# include "ev_win32.c"
		191	#endif
		192
		193	/*****************************************************************************/
		194
		195	static void (syserr_cb)(const char msg);
		196
		197	void ev_set_syserr_cb (void (cb)(const char msg))
		198	{
		199	syserr_cb = cb;
		200	}
		201
		202	static void
		203	syserr (const char *msg)
		204	{
		205	if (!msg)
		206	msg = "(libev) system error";
		207
		208	if (syserr_cb)
		209	syserr_cb (msg);
		210	else
		211	{
		212	perror (msg);
		213	abort ();
		214	}
		215	}
		216
		217	static void (alloc)(void *ptr, long size);
		218
		219	void ev_set_allocator (void (cb)(void *ptr, long size))
		220	{
		221	alloc = cb;
		222	}
		223
		224	static void *
		225	ev_realloc (void *ptr, long size)
		226	{
		227	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		228
		229	if (!ptr && size)
		230	{
		231	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		232	abort ();
		233	}
		234
		235	return ptr;
		236	}
		237
		238	#define ev_malloc(size) ev_realloc (0, (size))
		239	#define ev_free(ptr) ev_realloc ((ptr), 0)
		240
		241	/*****************************************************************************/
		242
		243	typedef struct
		244	{
		245	WL head;
		246	unsigned char events;
		247	unsigned char reify;
		248	#if EV_SELECT_IS_WINSOCKET
		249	SOCKET handle;
		250	#endif
		251	} ANFD;
		252
		253	typedef struct
		254	{
		255	W w;
		256	int events;
		257	} ANPENDING;
		258
		259	#if EV_MULTIPLICITY
		260
		261	struct ev_loop
		262	{
		263	ev_tstamp ev_rt_now;
		264	#define ev_rt_now ((loop)->ev_rt_now)
		265	#define VAR(name,decl) decl;
		266	#include "ev_vars.h"
		267	#undef VAR
		268	};
		269	#include "ev_wrap.h"
		270
		271	static struct ev_loop default_loop_struct;
		272	struct ev_loop *ev_default_loop_ptr;
		273
		274	#else
		275
119	ev_tstamp ev_now;	276	ev_tstamp ev_rt_now;
120	int ev_method;	277	#define VAR(name,decl) static decl;
		278	#include "ev_vars.h"
		279	#undef VAR
121		280
122	static int have_monotonic; /* runtime */	281	static int ev_default_loop_ptr;
123		282
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	283	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		284
128	/*****************************************************************************/	285	/*****************************************************************************/
129		286
130	ev_tstamp	287	ev_tstamp
131	ev_time (void)	288	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	296	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	297	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	298	#endif
142	}	299	}
143		300
144	static ev_tstamp	301	inline ev_tstamp
145	get_clock (void)	302	get_clock (void)
146	{	303	{
147	#if EV_USE_MONOTONIC	304	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	305	if (expect_true (have_monotonic))
149	{	306	{
…		…
154	#endif	311	#endif
155		312
156	return ev_time ();	313	return ev_time ();
157	}	314	}
158		315
		316	#if EV_MULTIPLICITY
		317	ev_tstamp
		318	ev_now (EV_P)
		319	{
		320	return ev_rt_now;
		321	}
		322	#endif
		323
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	324	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		325
161	#define array_needsize(base,cur,cnt,init) \	326	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	327	if (expect_false ((cnt) > cur)) \
163	{ \	328	{ \
164	int newcnt = cur; \	329	int newcnt = cur; \
165	do \	330	do \
166	{ \	331	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	332	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	333	} \
169	while ((cnt) > newcnt); \	334	while ((cnt) > newcnt); \
170	\	335	\
171	base = realloc (base, sizeof (base) (newcnt)); \	336	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	337	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	338	cur = newcnt; \
174	}	339	}
		340
		341	#define array_slim(type,stem) \
		342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		343	{ \
		344	stem ## max = array_roundsize (stem ## cnt >> 1); \
		345	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		347	}
		348
		349	#define array_free(stem, idx) \
		350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		351
176	/*****************************************************************************/	352	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		353
188	static void	354	static void
189	anfds_init (ANFD *base, int count)	355	anfds_init (ANFD *base, int count)
190	{	356	{
191	while (count--)	357	while (count--)
…		…
196		362
197	++base;	363	++base;
198	}	364	}
199	}	365	}
200		366
201	typedef struct	367	void
		368	ev_feed_event (EV_P_ void *w, int revents)
202	{	369	{
203	W w;	370	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		371
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)	372	if (w_->pending)
214	{	373	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	374	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	375	return;
217	}	376	}
218		377
219	w->pending = ++pendingcnt [ABSPRI (w)];	378	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	379	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	380	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	381	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	382	}
224		383
225	static void	384	static void
226	queue_events (W *events, int eventcnt, int type)	385	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	386	{
228	int i;	387	int i;
229		388
230	for (i = 0; i < eventcnt; ++i)	389	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	390	ev_feed_event (EV_A_ events [i], type);
232	}	391	}
233		392
234	static void	393	inline void
235	fd_event (int fd, int events)	394	fd_event (EV_P_ int fd, int revents)
236	{	395	{
237	ANFD *anfd = anfds + fd;	396	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	397	struct ev_io *w;
239		398
240	for (w = anfd->head; w; w = w->next)	399	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	400	{
242	int ev = w->events & events;	401	int ev = w->events & revents;
243		402
244	if (ev)	403	if (ev)
245	event ((W)w, ev);	404	ev_feed_event (EV_A_ (W)w, ev);
246	}	405	}
		406	}
		407
		408	void
		409	ev_feed_fd_event (EV_P_ int fd, int revents)
		410	{
		411	fd_event (EV_A_ fd, revents);
247	}	412	}
248		413
249	/*****************************************************************************/	414	/*****************************************************************************/
250		415
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	416	static void
255	fd_reify (void)	417	fd_reify (EV_P)
256	{	418	{
257	int i;	419	int i;
258		420
259	for (i = 0; i < fdchangecnt; ++i)	421	for (i = 0; i < fdchangecnt; ++i)
260	{	422	{
…		…
262	ANFD *anfd = anfds + fd;	424	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	425	struct ev_io *w;
264		426
265	int events = 0;	427	int events = 0;
266		428
267	for (w = anfd->head; w; w = w->next)	429	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	430	events \|= w->events;
269		431
		432	#if EV_SELECT_IS_WINSOCKET
		433	if (events)
		434	{
		435	unsigned long argp;
		436	anfd->handle = _get_osfhandle (fd);
		437	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		438	}
		439	#endif
		440
270	anfd->reify = 0;	441	anfd->reify = 0;
271		442
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	443	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	444	anfd->events = events;
276	}
277	}	445	}
278		446
279	fdchangecnt = 0;	447	fdchangecnt = 0;
280	}	448	}
281		449
282	static void	450	static void
283	fd_change (int fd)	451	fd_change (EV_P_ int fd)
284	{	452	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	453	if (anfds [fd].reify)
286	return;	454	return;
287		455
288	anfds [fd].reify = 1;	456	anfds [fd].reify = 1;
289		457
290	++fdchangecnt;	458	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	460	fdchanges [fdchangecnt - 1] = fd;
293	}	461	}
294		462
295	static void	463	static void
296	fd_kill (int fd)	464	fd_kill (EV_P_ int fd)
297	{	465	{
298	struct ev_io *w;	466	struct ev_io *w;
299		467
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	468	while ((w = (struct ev_io *)anfds [fd].head))
302	{	469	{
303	ev_io_stop (w);	470	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	471	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	472	}
		473	}
		474
		475	static int
		476	fd_valid (int fd)
		477	{
		478	#ifdef _WIN32
		479	return _get_osfhandle (fd) != -1;
		480	#else
		481	return fcntl (fd, F_GETFD) != -1;
		482	#endif
306	}	483	}
307		484
308	/* called on EBADF to verify fds */	485	/* called on EBADF to verify fds */
309	static void	486	static void
310	fd_ebadf (void)	487	fd_ebadf (EV_P)
311	{	488	{
312	int fd;	489	int fd;
313		490
314	for (fd = 0; fd < anfdmax; ++fd)	491	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	492	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	493	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	494	fd_kill (EV_A_ fd);
318	}	495	}
319		496
320	/* called on ENOMEM in select/poll to kill some fds and retry */	497	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	498	static void
322	fd_enomem (void)	499	fd_enomem (EV_P)
323	{	500	{
324	int fd = anfdmax;	501	int fd;
325		502
326	while (fd--)	503	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	504	if (anfds [fd].events)
328	{	505	{
329	close (fd);
330	fd_kill (fd);	506	fd_kill (EV_A_ fd);
331	return;	507	return;
332	}	508	}
333	}	509	}
334		510
		511	/* usually called after fork if method needs to re-arm all fds from scratch */
		512	static void
		513	fd_rearm_all (EV_P)
		514	{
		515	int fd;
		516
		517	/* this should be highly optimised to not do anything but set a flag */
		518	for (fd = 0; fd < anfdmax; ++fd)
		519	if (anfds [fd].events)
		520	{
		521	anfds [fd].events = 0;
		522	fd_change (EV_A_ fd);
		523	}
		524	}
		525
335	/*****************************************************************************/	526	/*****************************************************************************/
336		527
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	528	static void
344	upheap (WT *timers, int k)	529	upheap (WT *heap, int k)
345	{	530	{
346	WT w = timers [k];	531	WT w = heap [k];
347		532
348	while (k && timers [k >> 1]->at > w->at)	533	while (k && heap [k >> 1]->at > w->at)
349	{	534	{
350	timers [k] = timers [k >> 1];	535	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	536	((W)heap [k])->active = k + 1;
352	k >>= 1;	537	k >>= 1;
353	}	538	}
354		539
355	timers [k] = w;	540	heap [k] = w;
356	timers [k]->active = k + 1;	541	((W)heap [k])->active = k + 1;
357		542
358	}	543	}
359		544
360	static void	545	static void
361	downheap (WT *timers, int N, int k)	546	downheap (WT *heap, int N, int k)
362	{	547	{
363	WT w = timers [k];	548	WT w = heap [k];
364		549
365	while (k < (N >> 1))	550	while (k < (N >> 1))
366	{	551	{
367	int j = k << 1;	552	int j = k << 1;
368		553
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	554	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	555	++j;
371		556
372	if (w->at <= timers [j]->at)	557	if (w->at <= heap [j]->at)
373	break;	558	break;
374		559
375	timers [k] = timers [j];	560	heap [k] = heap [j];
376	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
377	k = j;	562	k = j;
378	}	563	}
379		564
380	timers [k] = w;	565	heap [k] = w;
381	timers [k]->active = k + 1;	566	((W)heap [k])->active = k + 1;
		567	}
		568
		569	inline void
		570	adjustheap (WT *heap, int N, int k)
		571	{
		572	upheap (heap, k);
		573	downheap (heap, N, k);
382	}	574	}
383		575
384	/*****************************************************************************/	576	/*****************************************************************************/
385		577
386	typedef struct	578	typedef struct
387	{	579	{
388	struct ev_signal *head;	580	WL head;
389	sig_atomic_t volatile gotsig;	581	sig_atomic_t volatile gotsig;
390	} ANSIG;	582	} ANSIG;
391		583
392	static ANSIG *signals;	584	static ANSIG *signals;
393	static int signalmax;	585	static int signalmax;
…		…
409	}	601	}
410		602
411	static void	603	static void
412	sighandler (int signum)	604	sighandler (int signum)
413	{	605	{
		606	#if _WIN32
		607	signal (signum, sighandler);
		608	#endif
		609
414	signals [signum - 1].gotsig = 1;	610	signals [signum - 1].gotsig = 1;
415		611
416	if (!gotsig)	612	if (!gotsig)
417	{	613	{
418	int old_errno = errno;	614	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	616	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	617	errno = old_errno;
422	}	618	}
423	}	619	}
424		620
		621	void
		622	ev_feed_signal_event (EV_P_ int signum)
		623	{
		624	WL w;
		625
		626	#if EV_MULTIPLICITY
		627	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		628	#endif
		629
		630	--signum;
		631
		632	if (signum < 0 \|\| signum >= signalmax)
		633	return;
		634
		635	signals [signum].gotsig = 0;
		636
		637	for (w = signals [signum].head; w; w = w->next)
		638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		639	}
		640
425	static void	641	static void
426	sigcb (struct ev_io *iow, int revents)	642	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	643	{
428	struct ev_signal *w;
429	int signum;	644	int signum;
430		645
431	read (sigpipe [0], &revents, 1);	646	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	647	gotsig = 0;
433		648
434	for (signum = signalmax; signum--; )	649	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	650	if (signals [signum].gotsig)
436	{	651	ev_feed_signal_event (EV_A_ signum + 1);
437	signals [signum].gotsig = 0;
438
439	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);
441	}
442	}	652	}
443		653
444	static void	654	inline void
445	siginit (void)	655	fd_intern (int fd)
446	{	656	{
447	#ifndef WIN32	657	#ifdef _WIN32
		658	int arg = 1;
		659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		660	#else
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	fcntl (fd, F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450
451	/* rather than sort out wether we really need nb, set it */
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	662	fcntl (fd, F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	663	#endif
		664	}
		665
		666	static void
		667	siginit (EV_P)
		668	{
		669	fd_intern (sigpipe [0]);
		670	fd_intern (sigpipe [1]);
455		671
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	672	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	673	ev_io_start (EV_A_ &sigev);
		674	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	675	}
459		676
460	/*****************************************************************************/	677	/*****************************************************************************/
461		678
462	static struct ev_idle **idles;
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472
473	static struct ev_child *childs [PID_HASHSIZE];	679	static struct ev_child *childs [PID_HASHSIZE];
		680
		681	#ifndef _WIN32
		682
474	static struct ev_signal childev;	683	static struct ev_signal childev;
475
476	#ifndef WIN32
477		684
478	#ifndef WCONTINUED	685	#ifndef WCONTINUED
479	# define WCONTINUED 0	686	# define WCONTINUED 0
480	#endif	687	#endif
481		688
482	static void	689	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	690	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	691	{
485	struct ev_child *w;	692	struct ev_child *w;
486		693
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	694	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
488	if (w->pid == pid \|\| !w->pid)	695	if (w->pid == pid \|\| !w->pid)
489	{	696	{
490	w->priority = sw->priority; /* need to do it now */	697	ev_priority (w) = ev_priority (sw); /* need to do it now */
491	w->rpid = pid;	698	w->rpid = pid;
492	w->rstatus = status;	699	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	700	ev_feed_event (EV_A_ (W)w, EV_CHILD);
495	}	701	}
496	}	702	}
497		703
498	static void	704	static void
499	childcb (struct ev_signal *sw, int revents)	705	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	706	{
501	int pid, status;	707	int pid, status;
502		708
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	709	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
505	{	710	{
506	/* make sure we are called again until all childs have been reaped */	711	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		713
509	child_reap (sw, pid, pid, status);	714	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	716	}
512	}	717	}
513		718
514	#endif	719	#endif
515		720
516	/*****************************************************************************/	721	/*****************************************************************************/
517		722
		723	#if EV_USE_PORT
		724	# include "ev_port.c"
		725	#endif
518	#if EV_USE_KQUEUE	726	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	727	# include "ev_kqueue.c"
520	#endif	728	#endif
521	#if EV_USE_EPOLL	729	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	730	# include "ev_epoll.c"
…		…
540	return EV_VERSION_MINOR;	748	return EV_VERSION_MINOR;
541	}	749	}
542		750
543	/* return true if we are running with elevated privileges and should ignore env variables */	751	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	752	static int
545	enable_secure ()	753	enable_secure (void)
546	{	754	{
547	#ifdef WIN32	755	#ifdef _WIN32
548	return 0;	756	return 0;
549	#else	757	#else
550	return getuid () != geteuid ()	758	return getuid () != geteuid ()
551	\|\| getgid () != getegid ();	759	\|\| getgid () != getegid ();
552	#endif	760	#endif
553	}	761	}
554		762
555	int ev_init (int methods)	763	unsigned int
		764	ev_method (EV_P)
556	{	765	{
		766	return method;
		767	}
		768
		769	static void
		770	loop_init (EV_P_ unsigned int flags)
		771	{
557	if (!ev_method)	772	if (!method)
558	{	773	{
559	#if EV_USE_MONOTONIC	774	#if EV_USE_MONOTONIC
560	{	775	{
561	struct timespec ts;	776	struct timespec ts;
562	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
563	have_monotonic = 1;	778	have_monotonic = 1;
564	}	779	}
565	#endif	780	#endif
566		781
567	ev_now = ev_time ();	782	ev_rt_now = ev_time ();
568	now = get_clock ();	783	mn_now = get_clock ();
569	now_floor = now;	784	now_floor = mn_now;
570	diff = ev_now - now;	785	rtmn_diff = ev_rt_now - mn_now;
571		786
572	if (pipe (sigpipe))	787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
573	return 0;
574
575	if (methods == EVMETHOD_AUTO)
576	if (!enable_secure () && getenv ("LIBEV_METHODS"))
577	methods = atoi (getenv ("LIBEV_METHODS"));	788	flags = atoi (getenv ("LIBEV_FLAGS"));
578	else
579	methods = EVMETHOD_ANY;
580		789
		790	if (!(flags & 0x0000ffff))
		791	flags \|= 0x0000ffff;
		792
581	ev_method = 0;	793	method = 0;
		794	#if EV_USE_PORT
		795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		796	#endif
582	#if EV_USE_KQUEUE	797	#if EV_USE_KQUEUE
583	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
584	#endif	799	#endif
585	#if EV_USE_EPOLL	800	#if EV_USE_EPOLL
586	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
587	#endif	802	#endif
588	#if EV_USE_POLL	803	#if EV_USE_POLL
589	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
590	#endif	805	#endif
591	#if EV_USE_SELECT	806	#if EV_USE_SELECT
592	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
593	#endif	808	#endif
594		809
		810	ev_init (&sigev, sigcb);
		811	ev_set_priority (&sigev, EV_MAXPRI);
		812	}
		813	}
		814
		815	void
		816	loop_destroy (EV_P)
		817	{
		818	int i;
		819
		820	#if EV_USE_PORT
		821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		825	#endif
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		828	#endif
		829	#if EV_USE_POLL
		830	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		831	#endif
		832	#if EV_USE_SELECT
		833	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		834	#endif
		835
		836	for (i = NUMPRI; i--; )
		837	array_free (pending, [i]);
		838
		839	/* have to use the microsoft-never-gets-it-right macro */
		840	array_free (fdchange, EMPTY0);
		841	array_free (timer, EMPTY0);
		842	#if EV_PERIODICS
		843	array_free (periodic, EMPTY0);
		844	#endif
		845	array_free (idle, EMPTY0);
		846	array_free (prepare, EMPTY0);
		847	array_free (check, EMPTY0);
		848
		849	method = 0;
		850	}
		851
		852	static void
		853	loop_fork (EV_P)
		854	{
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		863	#endif
		864
		865	if (ev_is_active (&sigev))
		866	{
		867	/* default loop */
		868
		869	ev_ref (EV_A);
		870	ev_io_stop (EV_A_ &sigev);
		871	close (sigpipe [0]);
		872	close (sigpipe [1]);
		873
		874	while (pipe (sigpipe))
		875	syserr ("(libev) error creating pipe");
		876
		877	siginit (EV_A);
		878	}
		879
		880	postfork = 0;
		881	}
		882
		883	#if EV_MULTIPLICITY
		884	struct ev_loop *
		885	ev_loop_new (unsigned int flags)
		886	{
		887	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		888
		889	memset (loop, 0, sizeof (struct ev_loop));
		890
		891	loop_init (EV_A_ flags);
		892
		893	if (ev_method (EV_A))
		894	return loop;
		895
		896	return 0;
		897	}
		898
		899	void
		900	ev_loop_destroy (EV_P)
		901	{
		902	loop_destroy (EV_A);
		903	ev_free (loop);
		904	}
		905
		906	void
		907	ev_loop_fork (EV_P)
		908	{
		909	postfork = 1;
		910	}
		911
		912	#endif
		913
		914	#if EV_MULTIPLICITY
		915	struct ev_loop *
		916	ev_default_loop_ (unsigned int flags)
		917	#else
		918	int
		919	ev_default_loop (unsigned int flags)
		920	#endif
		921	{
		922	if (sigpipe [0] == sigpipe [1])
		923	if (pipe (sigpipe))
		924	return 0;
		925
		926	if (!ev_default_loop_ptr)
		927	{
		928	#if EV_MULTIPLICITY
		929	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		930	#else
		931	ev_default_loop_ptr = 1;
		932	#endif
		933
		934	loop_init (EV_A_ flags);
		935
595	if (ev_method)	936	if (ev_method (EV_A))
596	{	937	{
597	ev_watcher_init (&sigev, sigcb);
598	ev_set_priority (&sigev, EV_MAXPRI);
599	siginit ();	938	siginit (EV_A);
600		939
601	#ifndef WIN32	940	#ifndef _WIN32
602	ev_signal_init (&childev, childcb, SIGCHLD);	941	ev_signal_init (&childev, childcb, SIGCHLD);
603	ev_set_priority (&childev, EV_MAXPRI);	942	ev_set_priority (&childev, EV_MAXPRI);
604	ev_signal_start (&childev);	943	ev_signal_start (EV_A_ &childev);
		944	ev_unref (EV_A); /* child watcher should not keep loop alive */
605	#endif	945	#endif
606	}	946	}
		947	else
		948	ev_default_loop_ptr = 0;
607	}	949	}
608		950
609	return ev_method;	951	return ev_default_loop_ptr;
		952	}
		953
		954	void
		955	ev_default_destroy (void)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = ev_default_loop_ptr;
		959	#endif
		960
		961	#ifndef _WIN32
		962	ev_ref (EV_A); /* child watcher */
		963	ev_signal_stop (EV_A_ &childev);
		964	#endif
		965
		966	ev_ref (EV_A); /* signal watcher */
		967	ev_io_stop (EV_A_ &sigev);
		968
		969	close (sigpipe [0]); sigpipe [0] = 0;
		970	close (sigpipe [1]); sigpipe [1] = 0;
		971
		972	loop_destroy (EV_A);
		973	}
		974
		975	void
		976	ev_default_fork (void)
		977	{
		978	#if EV_MULTIPLICITY
		979	struct ev_loop *loop = ev_default_loop_ptr;
		980	#endif
		981
		982	if (method)
		983	postfork = 1;
610	}	984	}
611		985
612	/*****************************************************************************/	986	/*****************************************************************************/
613		987
614	void
615	ev_fork_prepare (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_parent (void)
622	{
623	/* nop */
624	}
625
626	void
627	ev_fork_child (void)
628	{
629	#if EV_USE_EPOLL
630	if (ev_method == EVMETHOD_EPOLL)
631	epoll_postfork_child ();
632	#endif
633
634	ev_io_stop (&sigev);
635	close (sigpipe [0]);
636	close (sigpipe [1]);
637	pipe (sigpipe);
638	siginit ();
639	}
640
641	/*****************************************************************************/
642
643	static void	988	static int
		989	any_pending (EV_P)
		990	{
		991	int pri;
		992
		993	for (pri = NUMPRI; pri--; )
		994	if (pendingcnt [pri])
		995	return 1;
		996
		997	return 0;
		998	}
		999
		1000	static void
644	call_pending (void)	1001	call_pending (EV_P)
645	{	1002	{
646	int pri;	1003	int pri;
647		1004
648	for (pri = NUMPRI; pri--; )	1005	for (pri = NUMPRI; pri--; )
649	while (pendingcnt [pri])	1006	while (pendingcnt [pri])
…		…
651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
652		1009
653	if (p->w)	1010	if (p->w)
654	{	1011	{
655	p->w->pending = 0;	1012	p->w->pending = 0;
656	p->w->cb (p->w, p->events);	1013	EV_CB_INVOKE (p->w, p->events);
657	}	1014	}
658	}	1015	}
659	}	1016	}
660		1017
661	static void	1018	static void
662	timers_reify (void)	1019	timers_reify (EV_P)
663	{	1020	{
664	while (timercnt && timers [0]->at <= now)	1021	while (timercnt && ((WT)timers [0])->at <= mn_now)
665	{	1022	{
666	struct ev_timer *w = timers [0];	1023	struct ev_timer *w = timers [0];
		1024
		1025	assert (("inactive timer on timer heap detected", ev_is_active (w)));
667		1026
668	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
669	if (w->repeat)	1028	if (w->repeat)
670	{	1029	{
671	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1031
672	w->at = now + w->repeat;	1032	((WT)w)->at += w->repeat;
		1033	if (((WT)w)->at < mn_now)
		1034	((WT)w)->at = mn_now;
		1035
673	downheap ((WT *)timers, timercnt, 0);	1036	downheap ((WT *)timers, timercnt, 0);
674	}	1037	}
675	else	1038	else
676	ev_timer_stop (w); /* nonrepeating: stop timer */	1039	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
677		1040
678	event ((W)w, EV_TIMEOUT);	1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
679	}	1042	}
680	}	1043	}
681		1044
		1045	#if EV_PERIODICS
682	static void	1046	static void
683	periodics_reify (void)	1047	periodics_reify (EV_P)
684	{	1048	{
685	while (periodiccnt && periodics [0]->at <= ev_now)	1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
686	{	1050	{
687	struct ev_periodic *w = periodics [0];	1051	struct ev_periodic *w = periodics [0];
688		1052
		1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1054
689	/* first reschedule or stop timer */	1055	/* first reschedule or stop timer */
690	if (w->interval)	1056	if (w->reschedule_cb)
691	{	1057	{
		1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1059	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1060	downheap ((WT *)periodics, periodiccnt, 0);
		1061	}
		1062	else if (w->interval)
		1063	{
692	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1064	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
693	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1065	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
694	downheap ((WT *)periodics, periodiccnt, 0);	1066	downheap ((WT *)periodics, periodiccnt, 0);
695	}	1067	}
696	else	1068	else
697	ev_periodic_stop (w); /* nonrepeating: stop timer */	1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
698		1070
699	event ((W)w, EV_PERIODIC);	1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
700	}	1072	}
701	}	1073	}
702		1074
703	static void	1075	static void
704	periodics_reschedule (ev_tstamp diff)	1076	periodics_reschedule (EV_P)
705	{	1077	{
706	int i;	1078	int i;
707		1079
708	/* adjust periodics after time jump */	1080	/* adjust periodics after time jump */
709	for (i = 0; i < periodiccnt; ++i)	1081	for (i = 0; i < periodiccnt; ++i)
710	{	1082	{
711	struct ev_periodic *w = periodics [i];	1083	struct ev_periodic *w = periodics [i];
712		1084
		1085	if (w->reschedule_cb)
		1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
713	if (w->interval)	1087	else if (w->interval)
714	{
715	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1088	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
716
717	if (fabs (diff) >= 1e-4)
718	{
719	ev_periodic_stop (w);
720	ev_periodic_start (w);
721
722	i = 0; /* restart loop, inefficient, but time jumps should be rare */
723	}
724	}
725	}	1089	}
726	}
727		1090
728	static int	1091	/* now rebuild the heap */
		1092	for (i = periodiccnt >> 1; i--; )
		1093	downheap ((WT *)periodics, periodiccnt, i);
		1094	}
		1095	#endif
		1096
		1097	inline int
729	time_update_monotonic (void)	1098	time_update_monotonic (EV_P)
730	{	1099	{
731	now = get_clock ();	1100	mn_now = get_clock ();
732		1101
733	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
734	{	1103	{
735	ev_now = now + diff;	1104	ev_rt_now = rtmn_diff + mn_now;
736	return 0;	1105	return 0;
737	}	1106	}
738	else	1107	else
739	{	1108	{
740	now_floor = now;	1109	now_floor = mn_now;
741	ev_now = ev_time ();	1110	ev_rt_now = ev_time ();
742	return 1;	1111	return 1;
743	}	1112	}
744	}	1113	}
745		1114
746	static void	1115	static void
747	time_update (void)	1116	time_update (EV_P)
748	{	1117	{
749	int i;	1118	int i;
750		1119
751	#if EV_USE_MONOTONIC	1120	#if EV_USE_MONOTONIC
752	if (expect_true (have_monotonic))	1121	if (expect_true (have_monotonic))
753	{	1122	{
754	if (time_update_monotonic ())	1123	if (time_update_monotonic (EV_A))
755	{	1124	{
756	ev_tstamp odiff = diff;	1125	ev_tstamp odiff = rtmn_diff;
757		1126
758	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1127	for (i = 4; --i; ) /* loop a few times, before making important decisions */
759	{	1128	{
760	diff = ev_now - now;	1129	rtmn_diff = ev_rt_now - mn_now;
761		1130
762	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
763	return; /* all is well */	1132	return; /* all is well */
764		1133
765	ev_now = ev_time ();	1134	ev_rt_now = ev_time ();
766	now = get_clock ();	1135	mn_now = get_clock ();
767	now_floor = now;	1136	now_floor = mn_now;
768	}	1137	}
769		1138
		1139	# if EV_PERIODICS
770	periodics_reschedule (diff - odiff);	1140	periodics_reschedule (EV_A);
		1141	# endif
771	/* no timer adjustment, as the monotonic clock doesn't jump */	1142	/* no timer adjustment, as the monotonic clock doesn't jump */
		1143	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
772	}	1144	}
773	}	1145	}
774	else	1146	else
775	#endif	1147	#endif
776	{	1148	{
777	ev_now = ev_time ();	1149	ev_rt_now = ev_time ();
778		1150
779	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1151	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
780	{	1152	{
		1153	#if EV_PERIODICS
781	periodics_reschedule (ev_now - now);	1154	periodics_reschedule (EV_A);
		1155	#endif
782		1156
783	/* adjust timers. this is easy, as the offset is the same for all */	1157	/* adjust timers. this is easy, as the offset is the same for all */
784	for (i = 0; i < timercnt; ++i)	1158	for (i = 0; i < timercnt; ++i)
785	timers [i]->at += diff;	1159	((WT)timers [i])->at += ev_rt_now - mn_now;
786	}	1160	}
787		1161
788	now = ev_now;	1162	mn_now = ev_rt_now;
789	}	1163	}
790	}	1164	}
791		1165
792	int ev_loop_done;	1166	void
		1167	ev_ref (EV_P)
		1168	{
		1169	++activecnt;
		1170	}
793		1171
		1172	void
		1173	ev_unref (EV_P)
		1174	{
		1175	--activecnt;
		1176	}
		1177
		1178	static int loop_done;
		1179
		1180	void
794	void ev_loop (int flags)	1181	ev_loop (EV_P_ int flags)
795	{	1182	{
796	double block;	1183	double block;
797	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1184	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
798		1185
799	do	1186	while (activecnt)
800	{	1187	{
801	/* queue check watchers (and execute them) */	1188	/* queue check watchers (and execute them) */
802	if (expect_false (preparecnt))	1189	if (expect_false (preparecnt))
803	{	1190	{
804	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
805	call_pending ();	1192	call_pending (EV_A);
806	}	1193	}
807		1194
		1195	/* we might have forked, so reify kernel state if necessary */
		1196	if (expect_false (postfork))
		1197	loop_fork (EV_A);
		1198
808	/* update fd-related kernel structures */	1199	/* update fd-related kernel structures */
809	fd_reify ();	1200	fd_reify (EV_A);
810		1201
811	/* calculate blocking time */	1202	/* calculate blocking time */
812		1203
813	/* we only need this for !monotonic clockor timers, but as we basically	1204	/* we only need this for !monotonic clock or timers, but as we basically
814	always have timers, we just calculate it always */	1205	always have timers, we just calculate it always */
815	#if EV_USE_MONOTONIC	1206	#if EV_USE_MONOTONIC
816	if (expect_true (have_monotonic))	1207	if (expect_true (have_monotonic))
817	time_update_monotonic ();	1208	time_update_monotonic (EV_A);
818	else	1209	else
819	#endif	1210	#endif
820	{	1211	{
821	ev_now = ev_time ();	1212	ev_rt_now = ev_time ();
822	now = ev_now;	1213	mn_now = ev_rt_now;
823	}	1214	}
824		1215
825	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1216	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
826	block = 0.;	1217	block = 0.;
827	else	1218	else
828	{	1219	{
829	block = MAX_BLOCKTIME;	1220	block = MAX_BLOCKTIME;
830		1221
831	if (timercnt)	1222	if (timercnt)
832	{	1223	{
833	ev_tstamp to = timers [0]->at - now + method_fudge;	1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
834	if (block > to) block = to;	1225	if (block > to) block = to;
835	}	1226	}
836		1227
		1228	#if EV_PERIODICS
837	if (periodiccnt)	1229	if (periodiccnt)
838	{	1230	{
839	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
840	if (block > to) block = to;	1232	if (block > to) block = to;
841	}	1233	}
		1234	#endif
842		1235
843	if (block < 0.) block = 0.;	1236	if (block < 0.) block = 0.;
844	}	1237	}
845		1238
846	method_poll (block);	1239	method_poll (EV_A_ block);
847		1240
848	/* update ev_now, do magic */	1241	/* update ev_rt_now, do magic */
849	time_update ();	1242	time_update (EV_A);
850		1243
851	/* queue pending timers and reschedule them */	1244	/* queue pending timers and reschedule them */
852	timers_reify (); /* relative timers called last */	1245	timers_reify (EV_A); /* relative timers called last */
		1246	#if EV_PERIODICS
853	periodics_reify (); /* absolute timers called first */	1247	periodics_reify (EV_A); /* absolute timers called first */
		1248	#endif
854		1249
855	/* queue idle watchers unless io or timers are pending */	1250	/* queue idle watchers unless io or timers are pending */
856	if (!pendingcnt)	1251	if (idlecnt && !any_pending (EV_A))
857	queue_events ((W *)idles, idlecnt, EV_IDLE);	1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
858		1253
859	/* queue check watchers, to be executed first */	1254	/* queue check watchers, to be executed first */
860	if (checkcnt)	1255	if (checkcnt)
861	queue_events ((W *)checks, checkcnt, EV_CHECK);	1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
862		1257
863	call_pending ();	1258	call_pending (EV_A);
864	}
865	while (!ev_loop_done);
866		1259
		1260	if (loop_done)
		1261	break;
		1262	}
		1263
867	if (ev_loop_done != 2)	1264	if (loop_done != 2)
868	ev_loop_done = 0;	1265	loop_done = 0;
		1266	}
		1267
		1268	void
		1269	ev_unloop (EV_P_ int how)
		1270	{
		1271	loop_done = how;
869	}	1272	}
870		1273
871	/*****************************************************************************/	1274	/*****************************************************************************/
872		1275
873	static void	1276	inline void
874	wlist_add (WL *head, WL elem)	1277	wlist_add (WL *head, WL elem)
875	{	1278	{
876	elem->next = *head;	1279	elem->next = *head;
877	*head = elem;	1280	*head = elem;
878	}	1281	}
879		1282
880	static void	1283	inline void
881	wlist_del (WL *head, WL elem)	1284	wlist_del (WL *head, WL elem)
882	{	1285	{
883	while (*head)	1286	while (*head)
884	{	1287	{
885	if (*head == elem)	1288	if (*head == elem)
…		…
890		1293
891	head = &(*head)->next;	1294	head = &(*head)->next;
892	}	1295	}
893	}	1296	}
894		1297
895	static void	1298	inline void
896	ev_clear_pending (W w)	1299	ev_clear_pending (EV_P_ W w)
897	{	1300	{
898	if (w->pending)	1301	if (w->pending)
899	{	1302	{
900	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1303	pendings [ABSPRI (w)][w->pending - 1].w = 0;
901	w->pending = 0;	1304	w->pending = 0;
902	}	1305	}
903	}	1306	}
904		1307
905	static void	1308	inline void
906	ev_start (W w, int active)	1309	ev_start (EV_P_ W w, int active)
907	{	1310	{
908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1311	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1312	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
910		1313
911	w->active = active;	1314	w->active = active;
		1315	ev_ref (EV_A);
912	}	1316	}
913		1317
914	static void	1318	inline void
915	ev_stop (W w)	1319	ev_stop (EV_P_ W w)
916	{	1320	{
		1321	ev_unref (EV_A);
917	w->active = 0;	1322	w->active = 0;
918	}	1323	}
919		1324
920	/*****************************************************************************/	1325	/*****************************************************************************/
921		1326
922	void	1327	void
923	ev_io_start (struct ev_io *w)	1328	ev_io_start (EV_P_ struct ev_io *w)
924	{	1329	{
925	int fd = w->fd;	1330	int fd = w->fd;
926		1331
927	if (ev_is_active (w))	1332	if (ev_is_active (w))
928	return;	1333	return;
929		1334
930	assert (("ev_io_start called with negative fd", fd >= 0));	1335	assert (("ev_io_start called with negative fd", fd >= 0));
931		1336
932	ev_start ((W)w, 1);	1337	ev_start (EV_A_ (W)w, 1);
933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1338	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
934	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);
935		1340
936	fd_change (fd);	1341	fd_change (EV_A_ fd);
937	}	1342	}
938		1343
939	void	1344	void
940	ev_io_stop (struct ev_io *w)	1345	ev_io_stop (EV_P_ struct ev_io *w)
941	{	1346	{
942	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
943	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
944	return;	1349	return;
945		1350
		1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1352
946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
947	ev_stop ((W)w);	1354	ev_stop (EV_A_ (W)w);
948		1355
949	fd_change (w->fd);	1356	fd_change (EV_A_ w->fd);
950	}	1357	}
951		1358
952	void	1359	void
953	ev_timer_start (struct ev_timer *w)	1360	ev_timer_start (EV_P_ struct ev_timer *w)
954	{	1361	{
955	if (ev_is_active (w))	1362	if (ev_is_active (w))
956	return;	1363	return;
957		1364
958	w->at += now;	1365	((WT)w)->at += mn_now;
959		1366
960	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
961		1368
962	ev_start ((W)w, ++timercnt);	1369	ev_start (EV_A_ (W)w, ++timercnt);
963	array_needsize (timers, timermax, timercnt, );	1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
964	timers [timercnt - 1] = w;	1371	timers [timercnt - 1] = w;
965	upheap ((WT *)timers, timercnt - 1);	1372	upheap ((WT *)timers, timercnt - 1);
966	}
967		1373
		1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1375	}
		1376
968	void	1377	void
969	ev_timer_stop (struct ev_timer *w)	1378	ev_timer_stop (EV_P_ struct ev_timer *w)
970	{	1379	{
971	ev_clear_pending ((W)w);	1380	ev_clear_pending (EV_A_ (W)w);
972	if (!ev_is_active (w))	1381	if (!ev_is_active (w))
973	return;	1382	return;
974		1383
		1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1385
975	if (w->active < timercnt--)	1386	if (((W)w)->active < timercnt--)
976	{	1387	{
977	timers [w->active - 1] = timers [timercnt];	1388	timers [((W)w)->active - 1] = timers [timercnt];
978	downheap ((WT *)timers, timercnt, w->active - 1);	1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
979	}	1390	}
980		1391
981	w->at = w->repeat;	1392	((WT)w)->at -= mn_now;
982		1393
983	ev_stop ((W)w);	1394	ev_stop (EV_A_ (W)w);
984	}	1395	}
985		1396
986	void	1397	void
987	ev_timer_again (struct ev_timer *w)	1398	ev_timer_again (EV_P_ struct ev_timer *w)
988	{	1399	{
989	if (ev_is_active (w))	1400	if (ev_is_active (w))
990	{	1401	{
991	if (w->repeat)	1402	if (w->repeat)
992	{	1403	{
993	w->at = now + w->repeat;	1404	((WT)w)->at = mn_now + w->repeat;
994	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
995	}	1406	}
996	else	1407	else
997	ev_timer_stop (w);	1408	ev_timer_stop (EV_A_ w);
998	}	1409	}
999	else if (w->repeat)	1410	else if (w->repeat)
		1411	{
		1412	w->at = w->repeat;
1000	ev_timer_start (w);	1413	ev_timer_start (EV_A_ w);
		1414	}
1001	}	1415	}
1002		1416
		1417	#if EV_PERIODICS
1003	void	1418	void
1004	ev_periodic_start (struct ev_periodic *w)	1419	ev_periodic_start (EV_P_ struct ev_periodic *w)
1005	{	1420	{
1006	if (ev_is_active (w))	1421	if (ev_is_active (w))
1007	return;	1422	return;
1008		1423
		1424	if (w->reschedule_cb)
		1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1426	else if (w->interval)
		1427	{
1009	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1428	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1010
1011	/* this formula differs from the one in periodic_reify because we do not always round up */	1429	/* this formula differs from the one in periodic_reify because we do not always round up */
1012	if (w->interval)
1013	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1430	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1431	}
1014		1432
1015	ev_start ((W)w, ++periodiccnt);	1433	ev_start (EV_A_ (W)w, ++periodiccnt);
1016	array_needsize (periodics, periodicmax, periodiccnt, );	1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1017	periodics [periodiccnt - 1] = w;	1435	periodics [periodiccnt - 1] = w;
1018	upheap ((WT *)periodics, periodiccnt - 1);	1436	upheap ((WT *)periodics, periodiccnt - 1);
1019	}
1020		1437
		1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1439	}
		1440
1021	void	1441	void
1022	ev_periodic_stop (struct ev_periodic *w)	1442	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1023	{	1443	{
1024	ev_clear_pending ((W)w);	1444	ev_clear_pending (EV_A_ (W)w);
1025	if (!ev_is_active (w))	1445	if (!ev_is_active (w))
1026	return;	1446	return;
1027		1447
		1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1449
1028	if (w->active < periodiccnt--)	1450	if (((W)w)->active < periodiccnt--)
1029	{	1451	{
1030	periodics [w->active - 1] = periodics [periodiccnt];	1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1031	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1032	}	1454	}
1033		1455
1034	ev_stop ((W)w);	1456	ev_stop (EV_A_ (W)w);
		1457	}
		1458
		1459	void
		1460	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1461	{
		1462	/* TODO: use adjustheap and recalculation */
		1463	ev_periodic_stop (EV_A_ w);
		1464	ev_periodic_start (EV_A_ w);
		1465	}
		1466	#endif
		1467
		1468	void
		1469	ev_idle_start (EV_P_ struct ev_idle *w)
		1470	{
		1471	if (ev_is_active (w))
		1472	return;
		1473
		1474	ev_start (EV_A_ (W)w, ++idlecnt);
		1475	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1476	idles [idlecnt - 1] = w;
		1477	}
		1478
		1479	void
		1480	ev_idle_stop (EV_P_ struct ev_idle *w)
		1481	{
		1482	ev_clear_pending (EV_A_ (W)w);
		1483	if (!ev_is_active (w))
		1484	return;
		1485
		1486	idles [((W)w)->active - 1] = idles [--idlecnt];
		1487	ev_stop (EV_A_ (W)w);
		1488	}
		1489
		1490	void
		1491	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1492	{
		1493	if (ev_is_active (w))
		1494	return;
		1495
		1496	ev_start (EV_A_ (W)w, ++preparecnt);
		1497	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1498	prepares [preparecnt - 1] = w;
		1499	}
		1500
		1501	void
		1502	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1503	{
		1504	ev_clear_pending (EV_A_ (W)w);
		1505	if (!ev_is_active (w))
		1506	return;
		1507
		1508	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1509	ev_stop (EV_A_ (W)w);
		1510	}
		1511
		1512	void
		1513	ev_check_start (EV_P_ struct ev_check *w)
		1514	{
		1515	if (ev_is_active (w))
		1516	return;
		1517
		1518	ev_start (EV_A_ (W)w, ++checkcnt);
		1519	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1520	checks [checkcnt - 1] = w;
		1521	}
		1522
		1523	void
		1524	ev_check_stop (EV_P_ struct ev_check *w)
		1525	{
		1526	ev_clear_pending (EV_A_ (W)w);
		1527	if (!ev_is_active (w))
		1528	return;
		1529
		1530	checks [((W)w)->active - 1] = checks [--checkcnt];
		1531	ev_stop (EV_A_ (W)w);
1035	}	1532	}
1036		1533
1037	#ifndef SA_RESTART	1534	#ifndef SA_RESTART
1038	# define SA_RESTART 0	1535	# define SA_RESTART 0
1039	#endif	1536	#endif
1040		1537
1041	void	1538	void
1042	ev_signal_start (struct ev_signal *w)	1539	ev_signal_start (EV_P_ struct ev_signal *w)
1043	{	1540	{
		1541	#if EV_MULTIPLICITY
		1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1543	#endif
1044	if (ev_is_active (w))	1544	if (ev_is_active (w))
1045	return;	1545	return;
1046		1546
1047	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1048		1548
1049	ev_start ((W)w, 1);	1549	ev_start (EV_A_ (W)w, 1);
1050	array_needsize (signals, signalmax, w->signum, signals_init);	1550	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1052		1552
1053	if (!w->next)	1553	if (!((WL)w)->next)
1054	{	1554	{
		1555	#if _WIN32
		1556	signal (w->signum, sighandler);
		1557	#else
1055	struct sigaction sa;	1558	struct sigaction sa;
1056	sa.sa_handler = sighandler;	1559	sa.sa_handler = sighandler;
1057	sigfillset (&sa.sa_mask);	1560	sigfillset (&sa.sa_mask);
1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1561	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1059	sigaction (w->signum, &sa, 0);	1562	sigaction (w->signum, &sa, 0);
		1563	#endif
1060	}	1564	}
1061	}	1565	}
1062		1566
1063	void	1567	void
1064	ev_signal_stop (struct ev_signal *w)	1568	ev_signal_stop (EV_P_ struct ev_signal *w)
1065	{	1569	{
1066	ev_clear_pending ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
1067	if (!ev_is_active (w))	1571	if (!ev_is_active (w))
1068	return;	1572	return;
1069		1573
1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1574	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1071	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
1072		1576
1073	if (!signals [w->signum - 1].head)	1577	if (!signals [w->signum - 1].head)
1074	signal (w->signum, SIG_DFL);	1578	signal (w->signum, SIG_DFL);
1075	}	1579	}
1076		1580
1077	void	1581	void
1078	ev_idle_start (struct ev_idle *w)	1582	ev_child_start (EV_P_ struct ev_child *w)
1079	{	1583	{
		1584	#if EV_MULTIPLICITY
		1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1586	#endif
1080	if (ev_is_active (w))	1587	if (ev_is_active (w))
1081	return;	1588	return;
1082		1589
1083	ev_start ((W)w, ++idlecnt);
1084	array_needsize (idles, idlemax, idlecnt, );
1085	idles [idlecnt - 1] = w;
1086	}
1087
1088	void
1089	ev_idle_stop (struct ev_idle *w)
1090	{
1091	ev_clear_pending ((W)w);
1092	if (ev_is_active (w))
1093	return;
1094
1095	idles [w->active - 1] = idles [--idlecnt];
1096	ev_stop ((W)w);
1097	}
1098
1099	void
1100	ev_prepare_start (struct ev_prepare *w)
1101	{
1102	if (ev_is_active (w))
1103	return;
1104
1105	ev_start ((W)w, ++preparecnt);
1106	array_needsize (prepares, preparemax, preparecnt, );
1107	prepares [preparecnt - 1] = w;
1108	}
1109
1110	void
1111	ev_prepare_stop (struct ev_prepare *w)
1112	{
1113	ev_clear_pending ((W)w);
1114	if (ev_is_active (w))
1115	return;
1116
1117	prepares [w->active - 1] = prepares [--preparecnt];
1118	ev_stop ((W)w);
1119	}
1120
1121	void
1122	ev_check_start (struct ev_check *w)
1123	{
1124	if (ev_is_active (w))
1125	return;
1126
1127	ev_start ((W)w, ++checkcnt);
1128	array_needsize (checks, checkmax, checkcnt, );
1129	checks [checkcnt - 1] = w;
1130	}
1131
1132	void
1133	ev_check_stop (struct ev_check *w)
1134	{
1135	ev_clear_pending ((W)w);
1136	if (ev_is_active (w))
1137	return;
1138
1139	checks [w->active - 1] = checks [--checkcnt];
1140	ev_stop ((W)w);
1141	}
1142
1143	void
1144	ev_child_start (struct ev_child *w)
1145	{
1146	if (ev_is_active (w))
1147	return;
1148
1149	ev_start ((W)w, 1);	1590	ev_start (EV_A_ (W)w, 1);
1150	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1591	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1151	}	1592	}
1152		1593
1153	void	1594	void
1154	ev_child_stop (struct ev_child *w)	1595	ev_child_stop (EV_P_ struct ev_child *w)
1155	{	1596	{
1156	ev_clear_pending ((W)w);	1597	ev_clear_pending (EV_A_ (W)w);
1157	if (ev_is_active (w))	1598	if (!ev_is_active (w))
1158	return;	1599	return;
1159		1600
1160	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1161	ev_stop ((W)w);	1602	ev_stop (EV_A_ (W)w);
1162	}	1603	}
1163		1604
1164	/*****************************************************************************/	1605	/*****************************************************************************/
1165		1606
1166	struct ev_once	1607	struct ev_once
…		…
1170	void (cb)(int revents, void arg);	1611	void (cb)(int revents, void arg);
1171	void *arg;	1612	void *arg;
1172	};	1613	};
1173		1614
1174	static void	1615	static void
1175	once_cb (struct ev_once *once, int revents)	1616	once_cb (EV_P_ struct ev_once *once, int revents)
1176	{	1617	{
1177	void (cb)(int revents, void arg) = once->cb;	1618	void (cb)(int revents, void arg) = once->cb;
1178	void *arg = once->arg;	1619	void *arg = once->arg;
1179		1620
1180	ev_io_stop (&once->io);	1621	ev_io_stop (EV_A_ &once->io);
1181	ev_timer_stop (&once->to);	1622	ev_timer_stop (EV_A_ &once->to);
1182	free (once);	1623	ev_free (once);
1183		1624
1184	cb (revents, arg);	1625	cb (revents, arg);
1185	}	1626	}
1186		1627
1187	static void	1628	static void
1188	once_cb_io (struct ev_io *w, int revents)	1629	once_cb_io (EV_P_ struct ev_io *w, int revents)
1189	{	1630	{
1190	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1631	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1191	}	1632	}
1192		1633
1193	static void	1634	static void
1194	once_cb_to (struct ev_timer *w, int revents)	1635	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1195	{	1636	{
1196	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1637	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1197	}	1638	}
1198		1639
1199	void	1640	void
1200	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1201	{	1642	{
1202	struct ev_once *once = malloc (sizeof (struct ev_once));	1643	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1203		1644
1204	if (!once)	1645	if (!once)
1205	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1206	else	1647	else
1207	{	1648	{
1208	once->cb = cb;	1649	once->cb = cb;
1209	once->arg = arg;	1650	once->arg = arg;
1210		1651
1211	ev_watcher_init (&once->io, once_cb_io);	1652	ev_init (&once->io, once_cb_io);
1212	if (fd >= 0)	1653	if (fd >= 0)
1213	{	1654	{
1214	ev_io_set (&once->io, fd, events);	1655	ev_io_set (&once->io, fd, events);
1215	ev_io_start (&once->io);	1656	ev_io_start (EV_A_ &once->io);
1216	}	1657	}
1217		1658
1218	ev_watcher_init (&once->to, once_cb_to);	1659	ev_init (&once->to, once_cb_to);
1219	if (timeout >= 0.)	1660	if (timeout >= 0.)
1220	{	1661	{
1221	ev_timer_set (&once->to, timeout, 0.);	1662	ev_timer_set (&once->to, timeout, 0.);
1222	ev_timer_start (&once->to);	1663	ev_timer_start (EV_A_ &once->to);
1223	}	1664	}
1224	}	1665	}
1225	}	1666	}
1226		1667
1227	/*****************************************************************************/	1668	#ifdef __cplusplus
1228
1229	#if 0
1230
1231	struct ev_io wio;
1232
1233	static void
1234	sin_cb (struct ev_io *w, int revents)
1235	{
1236	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1237	}	1669	}
1238
1239	static void
1240	ocb (struct ev_timer *w, int revents)
1241	{
1242	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1243	ev_timer_stop (w);
1244	ev_timer_start (w);
1245	}
1246
1247	static void
1248	scb (struct ev_signal *w, int revents)
1249	{
1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1251	ev_io_stop (&wio);
1252	ev_io_start (&wio);
1253	}
1254
1255	static void
1256	gcb (struct ev_signal *w, int revents)
1257	{
1258	fprintf (stderr, "generic %x\n", revents);
1259
1260	}
1261
1262	int main (void)
1263	{
1264	ev_init (0);
1265
1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
1267	ev_io_start (&wio);
1268
1269	struct ev_timer t[10000];
1270
1271	#if 0
1272	int i;
1273	for (i = 0; i < 10000; ++i)
1274	{
1275	struct ev_timer *w = t + i;
1276	ev_watcher_init (w, ocb, i);
1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1278	ev_timer_start (w);
1279	if (drand48 () < 0.5)
1280	ev_timer_stop (w);
1281	}
1282	#endif	1670	#endif
1283		1671
1284	struct ev_timer t1;
1285	ev_timer_init (&t1, ocb, 5, 10);
1286	ev_timer_start (&t1);
1287
1288	struct ev_signal sig;
1289	ev_signal_init (&sig, scb, SIGQUIT);
1290	ev_signal_start (&sig);
1291
1292	struct ev_check cw;
1293	ev_check_init (&cw, gcb);
1294	ev_check_start (&cw);
1295
1296	struct ev_idle iw;
1297	ev_idle_init (&iw, gcb);
1298	ev_idle_start (&iw);
1299
1300	ev_loop (0);
1301
1302	return 0;
1303	}
1304
1305	#endif
1306
1307
1308
1309

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Comparing libev/ev.c (file contents): Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs. Revision 1.119 by root, Fri Nov 16 01:43:52 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.119 by root, Fri Nov 16 01:43:52 2007 UTC