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

Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 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
		36	#ifndef EV_STANDALONE
31	#if EV_USE_CONFIG_H	37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
117		210
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
		217	/*****************************************************************************/
		218
		219	static void (syserr_cb)(const char msg);
		220
		221	void ev_set_syserr_cb (void (cb)(const char msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void (alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void (cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
		267	typedef struct
		268	{
		269	WL head;
		270	unsigned char events;
		271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
		275	} ANFD;
		276
		277	typedef struct
		278	{
		279	W w;
		280	int events;
		281	} ANPENDING;
		282
		283	#if EV_MULTIPLICITY
		284
		285	struct ev_loop
		286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
		289	#define VAR(name,decl) decl;
		290	#include "ev_vars.h"
		291	#undef VAR
		292	};
		293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
		297
		298	#else
		299
119	ev_tstamp ev_now;	300	ev_tstamp ev_rt_now;
120	int ev_method;	301	#define VAR(name,decl) static decl;
		302	#include "ev_vars.h"
		303	#undef VAR
121		304
122	static int have_monotonic; /* runtime */	305	static int ev_default_loop_ptr;
123		306
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	307	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		308
128	/*****************************************************************************/	309	/*****************************************************************************/
129		310
130	ev_tstamp	311	ev_tstamp
131	ev_time (void)	312	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	320	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	321	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	322	#endif
142	}	323	}
143		324
144	static ev_tstamp	325	inline ev_tstamp
145	get_clock (void)	326	get_clock (void)
146	{	327	{
147	#if EV_USE_MONOTONIC	328	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	329	if (expect_true (have_monotonic))
149	{	330	{
…		…
154	#endif	335	#endif
155		336
156	return ev_time ();	337	return ev_time ();
157	}	338	}
158		339
		340	#if EV_MULTIPLICITY
		341	ev_tstamp
		342	ev_now (EV_P)
		343	{
		344	return ev_rt_now;
		345	}
		346	#endif
		347
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		349
161	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
163	{ \	352	{ \
164	int newcnt = cur; \	353	int newcnt = cur; \
165	do \	354	do \
166	{ \	355	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	357	} \
169	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
170	\	359	\
171	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	362	cur = newcnt; \
174	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		375
176	/*****************************************************************************/	376	/*****************************************************************************/
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		377
188	static void	378	static void
189	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
190	{	380	{
191	while (count--)	381	while (count--)
…		…
196		386
197	++base;	387	++base;
198	}	388	}
199	}	389	}
200		390
201	typedef struct	391	void
		392	ev_feed_event (EV_P_ void *w, int revents)
202	{	393	{
203	W w;	394	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		395
207	static ANPENDING *pendings [NUMPRI];	396	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	397	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	399	return;
217	}	400	}
218		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
219	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	409	}
224		410
225	static void	411	static void
226	queue_events (W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	413	{
228	int i;	414	int i;
229		415
230	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
232	}	418	}
233		419
234	static void	420	inline void
235	fd_event (int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
236	{	422	{
237	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	424	struct ev_io *w;
239		425
240	for (w = anfd->head; w; w = w->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	427	{
242	int ev = w->events & events;	428	int ev = w->events & revents;
243		429
244	if (ev)	430	if (ev)
245	event ((W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
246	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
247	}	439	}
248		440
249	/*****************************************************************************/	441	/*****************************************************************************/
250		442
251	static int *fdchanges;	443	inline void
252	static int fdchangemax, fdchangecnt;	444	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	445	{
257	int i;	446	int i;
258		447
259	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
260	{	449	{
…		…
262	ANFD *anfd = anfds + fd;	451	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	452	struct ev_io *w;
264		453
265	int events = 0;	454	int events = 0;
266		455
267	for (w = anfd->head; w; w = w->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	457	events \|= w->events;
269		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
270	anfd->reify = 0;	468	anfd->reify = 0;
271		469
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	471	anfd->events = events;
276	}
277	}	472	}
278		473
279	fdchangecnt = 0;	474	fdchangecnt = 0;
280	}	475	}
281		476
282	static void	477	static void
283	fd_change (int fd)	478	fd_change (EV_P_ int fd)
284	{	479	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
286	return;	481	return;
287		482
288	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
289		484
290	++fdchangecnt;	485	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
293	}	488	}
294		489
295	static void	490	static void
296	fd_kill (int fd)	491	fd_kill (EV_P_ int fd)
297	{	492	{
298	struct ev_io *w;	493	struct ev_io *w;
299		494
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
302	{	496	{
303	ev_io_stop (w);	497	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	499	}
		500	}
		501
		502	inline int
		503	fd_valid (int fd)
		504	{
		505	#ifdef _WIN32
		506	return _get_osfhandle (fd) != -1;
		507	#else
		508	return fcntl (fd, F_GETFD) != -1;
		509	#endif
306	}	510	}
307		511
308	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
309	static void	513	static void
310	fd_ebadf (void)	514	fd_ebadf (EV_P)
311	{	515	{
312	int fd;	516	int fd;
313		517
314	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	519	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	521	fd_kill (EV_A_ fd);
318	}	522	}
319		523
320	/* called on ENOMEM in select/poll to kill some fds and retry */	524	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	525	static void
322	fd_enomem (void)	526	fd_enomem (EV_P)
323	{	527	{
324	int fd = anfdmax;	528	int fd;
325		529
326	while (fd--)	530	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	531	if (anfds [fd].events)
328	{	532	{
329	close (fd);
330	fd_kill (fd);	533	fd_kill (EV_A_ fd);
331	return;	534	return;
332	}	535	}
333	}	536	}
334		537
		538	/* usually called after fork if backend needs to re-arm all fds from scratch */
		539	static void
		540	fd_rearm_all (EV_P)
		541	{
		542	int fd;
		543
		544	/* this should be highly optimised to not do anything but set a flag */
		545	for (fd = 0; fd < anfdmax; ++fd)
		546	if (anfds [fd].events)
		547	{
		548	anfds [fd].events = 0;
		549	fd_change (EV_A_ fd);
		550	}
		551	}
		552
335	/*****************************************************************************/	553	/*****************************************************************************/
336		554
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	555	static void
344	upheap (WT *timers, int k)	556	upheap (WT *heap, int k)
345	{	557	{
346	WT w = timers [k];	558	WT w = heap [k];
347		559
348	while (k && timers [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
349	{	561	{
350	timers [k] = timers [k >> 1];	562	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
352	k >>= 1;	564	k >>= 1;
353	}	565	}
354		566
355	timers [k] = w;	567	heap [k] = w;
356	timers [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
357		569
358	}	570	}
359		571
360	static void	572	static void
361	downheap (WT *timers, int N, int k)	573	downheap (WT *heap, int N, int k)
362	{	574	{
363	WT w = timers [k];	575	WT w = heap [k];
364		576
365	while (k < (N >> 1))	577	while (k < (N >> 1))
366	{	578	{
367	int j = k << 1;	579	int j = k << 1;
368		580
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	582	++j;
371		583
372	if (w->at <= timers [j]->at)	584	if (w->at <= heap [j]->at)
373	break;	585	break;
374		586
375	timers [k] = timers [j];	587	heap [k] = heap [j];
376	timers [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
377	k = j;	589	k = j;
378	}	590	}
379		591
380	timers [k] = w;	592	heap [k] = w;
381	timers [k]->active = k + 1;	593	((W)heap [k])->active = k + 1;
		594	}
		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
382	}	601	}
383		602
384	/*****************************************************************************/	603	/*****************************************************************************/
385		604
386	typedef struct	605	typedef struct
387	{	606	{
388	struct ev_signal *head;	607	WL head;
389	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
390	} ANSIG;	609	} ANSIG;
391		610
392	static ANSIG *signals;	611	static ANSIG *signals;
393	static int signalmax;	612	static int signalmax;
…		…
409	}	628	}
410		629
411	static void	630	static void
412	sighandler (int signum)	631	sighandler (int signum)
413	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
414	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
415		638
416	if (!gotsig)	639	if (!gotsig)
417	{	640	{
418	int old_errno = errno;	641	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	644	errno = old_errno;
422	}	645	}
423	}	646	}
424		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 \|\| signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
425	static void	668	static void
426	sigcb (struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	670	{
428	struct ev_signal *w;
429	int signum;	671	int signum;
430		672
431	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	674	gotsig = 0;
433		675
434	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
436	{	678	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	}	679	}
443		680
444	static void	681	static void
445	siginit (void)	682	fd_intern (int fd)
446	{	683	{
447	#ifndef WIN32	684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	688	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);	689	fcntl (fd, F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	690	#endif
		691	}
		692
		693	static void
		694	siginit (EV_P)
		695	{
		696	fd_intern (sigpipe [0]);
		697	fd_intern (sigpipe [1]);
455		698
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	700	ev_io_start (EV_A_ &sigev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	702	}
459		703
460	/*****************************************************************************/	704	/*****************************************************************************/
461		705
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];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
474	static struct ev_signal childev;	710	static struct ev_signal childev;
475
476	#ifndef WIN32
477		711
478	#ifndef WCONTINUED	712	#ifndef WCONTINUED
479	# define WCONTINUED 0	713	# define WCONTINUED 0
480	#endif	714	#endif
481		715
482	static void	716	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	718	{
485	struct ev_child *w;	719	struct ev_child *w;
486		720
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	721	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)	722	if (w->pid == pid \|\| !w->pid)
489	{	723	{
490	w->priority = sw->priority; /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
491	w->rpid = pid;	725	w->rpid = pid;
492	w->rstatus = status;	726	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
495	}	728	}
496	}	729	}
497		730
498	static void	731	static void
499	childcb (struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	733	{
501	int pid, status;	734	int pid, status;
502		735
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
505	{	737	{
506	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
507	event ((W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		741
509	child_reap (sw, pid, pid, status);	742	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 */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
511	}	744	}
512	}	745	}
513		746
514	#endif	747	#endif
515		748
516	/*****************************************************************************/	749	/*****************************************************************************/
517		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
518	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
520	#endif	756	#endif
521	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
538	ev_version_minor (void)	774	ev_version_minor (void)
539	{	775	{
540	return EV_VERSION_MINOR;	776	return EV_VERSION_MINOR;
541	}	777	}
542		778
543	/* return true if we are running with elevated privileges and ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	780	static int
545	enable_secure ()	781	enable_secure (void)
546	{	782	{
		783	#ifdef _WIN32
		784	return 0;
		785	#else
547	return getuid () != geteuid ()	786	return getuid () != geteuid ()
548	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
		788	#endif
549	}	789	}
550		790
551	int ev_init (int methods)	791	unsigned int
		792	ev_supported_backends (void)
552	{	793	{
553	if (!ev_method)	794	unsigned int flags = 0;
		795
		796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
		807	{
		808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
554	{	841	{
555	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
556	{	843	{
557	struct timespec ts;	844	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	846	have_monotonic = 1;
560	}	847	}
561	#endif	848	#endif
562		849
563	ev_now = ev_time ();	850	ev_rt_now = ev_time ();
564	now = get_clock ();	851	mn_now = get_clock ();
565	now_floor = now;	852	now_floor = mn_now;
566	diff = ev_now - now;	853	rtmn_diff = ev_rt_now - mn_now;
567		854
568	if (pipe (sigpipe))	855	if (!(flags & EVFLAG_NOENV)
569	return 0;	856	&& !enable_secure ()
570		857	&& getenv ("LIBEV_FLAGS"))
571	if (methods == EVMETHOD_AUTO)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
574	else
575	methods = EVMETHOD_ANY;
576		859
577	ev_method = 0;	860	if (!(flags & 0x0000ffffUL))
		861	flags \|= ev_recommended_backends ();
		862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		866	#endif
578	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
580	#endif	869	#endif
581	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
583	#endif	872	#endif
584	#if EV_USE_POLL	873	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
586	#endif	875	#endif
587	#if EV_USE_SELECT	876	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
589	#endif	878	#endif
590		879
591	if (ev_method)	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
		886	loop_destroy (EV_P)
		887	{
		888	int i;
		889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		898	#endif
		899	#if EV_USE_POLL
		900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		901	#endif
		902	#if EV_USE_SELECT
		903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		904	#endif
		905
		906	for (i = NUMPRI; i--; )
		907	array_free (pending, [i]);
		908
		909	/* have to use the microsoft-never-gets-it-right macro */
		910	array_free (fdchange, EMPTY0);
		911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
		913	array_free (periodic, EMPTY0);
		914	#endif
		915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
		918
		919	backend = 0;
		920	}
		921
		922	static void
		923	loop_fork (EV_P)
		924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
		931	#if EV_USE_EPOLL
		932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		933	#endif
		934
		935	if (ev_is_active (&sigev))
		936	{
		937	/* default loop */
		938
		939	ev_ref (EV_A);
		940	ev_io_stop (EV_A_ &sigev);
		941	close (sigpipe [0]);
		942	close (sigpipe [1]);
		943
		944	while (pipe (sigpipe))
		945	syserr ("(libev) error creating pipe");
		946
		947	siginit (EV_A);
		948	}
		949
		950	postfork = 0;
		951	}
		952
		953	#if EV_MULTIPLICITY
		954	struct ev_loop *
		955	ev_loop_new (unsigned int flags)
		956	{
		957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
		961	loop_init (EV_A_ flags);
		962
		963	if (ev_backend (EV_A))
		964	return loop;
		965
		966	return 0;
		967	}
		968
		969	void
		970	ev_loop_destroy (EV_P)
		971	{
		972	loop_destroy (EV_A);
		973	ev_free (loop);
		974	}
		975
		976	void
		977	ev_loop_fork (EV_P)
		978	{
		979	postfork = 1;
		980	}
		981
		982	#endif
		983
		984	#if EV_MULTIPLICITY
		985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
		987	#else
		988	int
		989	ev_default_loop (unsigned int flags)
		990	#endif
		991	{
		992	if (sigpipe [0] == sigpipe [1])
		993	if (pipe (sigpipe))
		994	return 0;
		995
		996	if (!ev_default_loop_ptr)
		997	{
		998	#if EV_MULTIPLICITY
		999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1000	#else
		1001	ev_default_loop_ptr = 1;
		1002	#endif
		1003
		1004	loop_init (EV_A_ flags);
		1005
		1006	if (ev_backend (EV_A))
592	{	1007	{
593	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	1008	siginit (EV_A);
596		1009
597	#ifndef WIN32	1010	#ifndef _WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	1013	ev_signal_start (EV_A_ &childev);
		1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	1015	#endif
602	}	1016	}
		1017	else
		1018	ev_default_loop_ptr = 0;
603	}	1019	}
604		1020
605	return ev_method;	1021	return ev_default_loop_ptr;
		1022	}
		1023
		1024	void
		1025	ev_default_destroy (void)
		1026	{
		1027	#if EV_MULTIPLICITY
		1028	struct ev_loop *loop = ev_default_loop_ptr;
		1029	#endif
		1030
		1031	#ifndef _WIN32
		1032	ev_ref (EV_A); /* child watcher */
		1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
		1035
		1036	ev_ref (EV_A); /* signal watcher */
		1037	ev_io_stop (EV_A_ &sigev);
		1038
		1039	close (sigpipe [0]); sigpipe [0] = 0;
		1040	close (sigpipe [1]); sigpipe [1] = 0;
		1041
		1042	loop_destroy (EV_A);
		1043	}
		1044
		1045	void
		1046	ev_default_fork (void)
		1047	{
		1048	#if EV_MULTIPLICITY
		1049	struct ev_loop *loop = ev_default_loop_ptr;
		1050	#endif
		1051
		1052	if (backend)
		1053	postfork = 1;
606	}	1054	}
607		1055
608	/*****************************************************************************/	1056	/*****************************************************************************/
609		1057
610	void
611	ev_fork_prepare (void)
612	{
613	/* nop */
614	}
615
616	void
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif
629
630	ev_io_stop (&sigev);
631	close (sigpipe [0]);
632	close (sigpipe [1]);
633	pipe (sigpipe);
634	siginit ();
635	}
636
637	/*****************************************************************************/
638
639	static void	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
640	call_pending (void)	1071	call_pending (EV_P)
641	{	1072	{
642	int pri;	1073	int pri;
643		1074
644	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
646	{	1077	{
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		1079
649	if (p->w)	1080	if (expect_true (p->w))
650	{	1081	{
651	p->w->pending = 0;	1082	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
653	}	1084	}
654	}	1085	}
655	}	1086	}
656		1087
657	static void	1088	inline void
658	timers_reify (void)	1089	timers_reify (EV_P)
659	{	1090	{
660	while (timercnt && timers [0]->at <= now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	1092	{
662	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
		1094
		1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));
663		1096
664	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
665	if (w->repeat)	1098	if (w->repeat)
666	{	1099	{
667	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
668	w->at = now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
669	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
670	}	1107	}
671	else	1108	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1110
674	event ((W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
675	}	1112	}
676	}	1113	}
677		1114
678	static void	1115	#if EV_PERIODICS
		1116	inline void
679	periodics_reify (void)	1117	periodics_reify (EV_P)
680	{	1118	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
682	{	1120	{
683	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
684		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
685	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
686	if (w->interval)	1126	if (w->reschedule_cb)
687	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
688	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
689	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
690	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
691	}	1137	}
692	else	1138	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		1140
695	event ((W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
696	}	1142	}
697	}	1143	}
698		1144
699	static void	1145	static void
700	periodics_reschedule (ev_tstamp diff)	1146	periodics_reschedule (EV_P)
701	{	1147	{
702	int i;	1148	int i;
703		1149
704	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
706	{	1152	{
707	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
708		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
709	if (w->interval)	1157	else if (w->interval)
710	{
711	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
712
713	if (fabs (diff) >= 1e-4)
714	{
715	ev_periodic_stop (w);
716	ev_periodic_start (w);
717
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}
720	}
721	}	1159	}
722	}
723		1160
724	static int	1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
		1164	}
		1165	#endif
		1166
		1167	inline int
725	time_update_monotonic (void)	1168	time_update_monotonic (EV_P)
726	{	1169	{
727	now = get_clock ();	1170	mn_now = get_clock ();
728		1171
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	1173	{
731	ev_now = now + diff;	1174	ev_rt_now = rtmn_diff + mn_now;
732	return 0;	1175	return 0;
733	}	1176	}
734	else	1177	else
735	{	1178	{
736	now_floor = now;	1179	now_floor = mn_now;
737	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
738	return 1;	1181	return 1;
739	}	1182	}
740	}	1183	}
741		1184
742	static void	1185	inline void
743	time_update (void)	1186	time_update (EV_P)
744	{	1187	{
745	int i;	1188	int i;
746		1189
747	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	1191	if (expect_true (have_monotonic))
749	{	1192	{
750	if (time_update_monotonic ())	1193	if (time_update_monotonic (EV_A))
751	{	1194	{
752	ev_tstamp odiff = diff;	1195	ev_tstamp odiff = rtmn_diff;
753		1196
754	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
755	{	1198	{
756	diff = ev_now - now;	1199	rtmn_diff = ev_rt_now - mn_now;
757		1200
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	1202	return; /* all is well */
760		1203
761	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
762	now = get_clock ();	1205	mn_now = get_clock ();
763	now_floor = now;	1206	now_floor = mn_now;
764	}	1207	}
765		1208
		1209	# if EV_PERIODICS
766	periodics_reschedule (diff - odiff);	1210	periodics_reschedule (EV_A);
		1211	# endif
767	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
		1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
768	}	1214	}
769	}	1215	}
770	else	1216	else
771	#endif	1217	#endif
772	{	1218	{
773	ev_now = ev_time ();	1219	ev_rt_now = ev_time ();
774		1220
775	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
776	{	1222	{
		1223	#if EV_PERIODICS
777	periodics_reschedule (ev_now - now);	1224	periodics_reschedule (EV_A);
		1225	#endif
778		1226
779	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
780	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
782	}	1230	}
783		1231
784	now = ev_now;	1232	mn_now = ev_rt_now;
785	}	1233	}
786	}	1234	}
787		1235
788	int ev_loop_done;	1236	void
		1237	ev_ref (EV_P)
		1238	{
		1239	++activecnt;
		1240	}
789		1241
		1242	void
		1243	ev_unref (EV_P)
		1244	{
		1245	--activecnt;
		1246	}
		1247
		1248	static int loop_done;
		1249
		1250	void
790	void ev_loop (int flags)	1251	ev_loop (EV_P_ int flags)
791	{	1252	{
792	double block;	1253	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1254	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
794		1255
795	do	1256	while (activecnt)
796	{	1257	{
797	/* queue check watchers (and execute them) */	1258	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	1259	if (expect_false (preparecnt))
799	{	1260	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	1262	call_pending (EV_A);
802	}	1263	}
803		1264
		1265	/* we might have forked, so reify kernel state if necessary */
		1266	if (expect_false (postfork))
		1267	loop_fork (EV_A);
		1268
804	/* update fd-related kernel structures */	1269	/* update fd-related kernel structures */
805	fd_reify ();	1270	fd_reify (EV_A);
806		1271
807	/* calculate blocking time */	1272	/* calculate blocking time */
808		1273
809	/* we only need this for !monotonic clockor timers, but as we basically	1274	/* we only need this for !monotonic clock or timers, but as we basically
810	always have timers, we just calculate it always */	1275	always have timers, we just calculate it always */
811	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	1277	if (expect_true (have_monotonic))
813	time_update_monotonic ();	1278	time_update_monotonic (EV_A);
814	else	1279	else
815	#endif	1280	#endif
816	{	1281	{
817	ev_now = ev_time ();	1282	ev_rt_now = ev_time ();
818	now = ev_now;	1283	mn_now = ev_rt_now;
819	}	1284	}
820		1285
821	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1286	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
822	block = 0.;	1287	block = 0.;
823	else	1288	else
824	{	1289	{
825	block = MAX_BLOCKTIME;	1290	block = MAX_BLOCKTIME;
826		1291
827	if (timercnt)	1292	if (timercnt)
828	{	1293	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
830	if (block > to) block = to;	1295	if (block > to) block = to;
831	}	1296	}
832		1297
		1298	#if EV_PERIODICS
833	if (periodiccnt)	1299	if (periodiccnt)
834	{	1300	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
836	if (block > to) block = to;	1302	if (block > to) block = to;
837	}	1303	}
		1304	#endif
838		1305
839	if (block < 0.) block = 0.;	1306	if (expect_false (block < 0.)) block = 0.;
840	}	1307	}
841		1308
842	method_poll (block);	1309	backend_poll (EV_A_ block);
843		1310
844	/* update ev_now, do magic */	1311	/* update ev_rt_now, do magic */
845	time_update ();	1312	time_update (EV_A);
846		1313
847	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
849	periodics_reify (); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
850		1319
851	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
852	if (!pendingcnt)	1321	if (idlecnt && !any_pending (EV_A))
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1323
855	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
856	if (checkcnt)	1325	if (expect_false (checkcnt))
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1327
859	call_pending ();	1328	call_pending (EV_A);
860	}
861	while (!ev_loop_done);
862		1329
		1330	if (expect_false (loop_done))
		1331	break;
		1332	}
		1333
863	if (ev_loop_done != 2)	1334	if (loop_done != 2)
864	ev_loop_done = 0;	1335	loop_done = 0;
		1336	}
		1337
		1338	void
		1339	ev_unloop (EV_P_ int how)
		1340	{
		1341	loop_done = how;
865	}	1342	}
866		1343
867	/*****************************************************************************/	1344	/*****************************************************************************/
868		1345
869	static void	1346	inline void
870	wlist_add (WL *head, WL elem)	1347	wlist_add (WL *head, WL elem)
871	{	1348	{
872	elem->next = *head;	1349	elem->next = *head;
873	*head = elem;	1350	*head = elem;
874	}	1351	}
875		1352
876	static void	1353	inline void
877	wlist_del (WL *head, WL elem)	1354	wlist_del (WL *head, WL elem)
878	{	1355	{
879	while (*head)	1356	while (*head)
880	{	1357	{
881	if (*head == elem)	1358	if (*head == elem)
…		…
886		1363
887	head = &(*head)->next;	1364	head = &(*head)->next;
888	}	1365	}
889	}	1366	}
890		1367
891	static void	1368	inline void
892	ev_clear_pending (W w)	1369	ev_clear_pending (EV_P_ W w)
893	{	1370	{
894	if (w->pending)	1371	if (w->pending)
895	{	1372	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1374	w->pending = 0;
898	}	1375	}
899	}	1376	}
900		1377
901	static void	1378	inline void
902	ev_start (W w, int active)	1379	ev_start (EV_P_ W w, int active)
903	{	1380	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1383
907	w->active = active;	1384	w->active = active;
		1385	ev_ref (EV_A);
908	}	1386	}
909		1387
910	static void	1388	inline void
911	ev_stop (W w)	1389	ev_stop (EV_P_ W w)
912	{	1390	{
		1391	ev_unref (EV_A);
913	w->active = 0;	1392	w->active = 0;
914	}	1393	}
915		1394
916	/*****************************************************************************/	1395	/*****************************************************************************/
917		1396
918	void	1397	void
919	ev_io_start (struct ev_io *w)	1398	ev_io_start (EV_P_ struct ev_io *w)
920	{	1399	{
921	int fd = w->fd;	1400	int fd = w->fd;
922		1401
923	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
924	return;	1403	return;
925		1404
926	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
927		1406
928	ev_start ((W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1410
932	fd_change (fd);	1411	fd_change (EV_A_ fd);
933	}	1412	}
934		1413
935	void	1414	void
936	ev_io_stop (struct ev_io *w)	1415	ev_io_stop (EV_P_ struct ev_io *w)
937	{	1416	{
938	ev_clear_pending ((W)w);	1417	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
940	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
941		1422
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1424	ev_stop (EV_A_ (W)w);
944		1425
945	fd_change (w->fd);	1426	fd_change (EV_A_ w->fd);
946	}	1427	}
947		1428
948	void	1429	void
949	ev_timer_start (struct ev_timer *w)	1430	ev_timer_start (EV_P_ struct ev_timer *w)
950	{	1431	{
951	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
952	return;	1433	return;
953		1434
954	w->at += now;	1435	((WT)w)->at += mn_now;
955		1436
956	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
957		1438
958	ev_start ((W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
960	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
962	}
963		1443
		1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1445	}
		1446
964	void	1447	void
965	ev_timer_stop (struct ev_timer *w)	1448	ev_timer_stop (EV_P_ struct ev_timer *w)
966	{	1449	{
967	ev_clear_pending ((W)w);	1450	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
969	return;	1452	return;
970		1453
		1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1455
971	if (w->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
972	{	1457	{
973	timers [w->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
975	}	1460	}
976		1461
977	w->at = w->repeat;	1462	((WT)w)->at -= mn_now;
978		1463
979	ev_stop ((W)w);	1464	ev_stop (EV_A_ (W)w);
980	}	1465	}
981		1466
982	void	1467	void
983	ev_timer_again (struct ev_timer *w)	1468	ev_timer_again (EV_P_ struct ev_timer *w)
984	{	1469	{
985	if (ev_is_active (w))	1470	if (ev_is_active (w))
986	{	1471	{
987	if (w->repeat)	1472	if (w->repeat)
988	{	1473	{
989	w->at = now + w->repeat;	1474	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1476	}
992	else	1477	else
993	ev_timer_stop (w);	1478	ev_timer_stop (EV_A_ w);
994	}	1479	}
995	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
996	ev_timer_start (w);	1483	ev_timer_start (EV_A_ w);
		1484	}
997	}	1485	}
998		1486
		1487	#if EV_PERIODICS
999	void	1488	void
1000	ev_periodic_start (struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ struct ev_periodic *w)
1001	{	1490	{
1002	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1003	return;	1492	return;
1004		1493
		1494	if (w->reschedule_cb)
		1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1496	else if (w->interval)
		1497	{
1005	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1006
1007	/* this formula differs from the one in periodic_reify because we do not always round up */	1499	/* this formula differs from the one in periodic_reify because we do not always round up */
1008	if (w->interval)
1009	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1501	}
1010		1502
1011	ev_start ((W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1013	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1507
		1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1509	}
		1510
1017	void	1511	void
1018	ev_periodic_stop (struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1019	{	1513	{
1020	ev_clear_pending ((W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1022	return;	1516	return;
1023		1517
		1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1519
1024	if (w->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1025	{	1521	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1028	}	1524	}
1029		1525
1030	ev_stop ((W)w);	1526	ev_stop (EV_A_ (W)w);
		1527	}
		1528
		1529	void
		1530	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1531	{
		1532	/* TODO: use adjustheap and recalculation */
		1533	ev_periodic_stop (EV_A_ w);
		1534	ev_periodic_start (EV_A_ w);
		1535	}
		1536	#endif
		1537
		1538	void
		1539	ev_idle_start (EV_P_ struct ev_idle *w)
		1540	{
		1541	if (expect_false (ev_is_active (w)))
		1542	return;
		1543
		1544	ev_start (EV_A_ (W)w, ++idlecnt);
		1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1546	idles [idlecnt - 1] = w;
		1547	}
		1548
		1549	void
		1550	ev_idle_stop (EV_P_ struct ev_idle *w)
		1551	{
		1552	ev_clear_pending (EV_A_ (W)w);
		1553	if (expect_false (!ev_is_active (w)))
		1554	return;
		1555
		1556	idles [((W)w)->active - 1] = idles [--idlecnt];
		1557	ev_stop (EV_A_ (W)w);
		1558	}
		1559
		1560	void
		1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1562	{
		1563	if (expect_false (ev_is_active (w)))
		1564	return;
		1565
		1566	ev_start (EV_A_ (W)w, ++preparecnt);
		1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1568	prepares [preparecnt - 1] = w;
		1569	}
		1570
		1571	void
		1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1573	{
		1574	ev_clear_pending (EV_A_ (W)w);
		1575	if (expect_false (!ev_is_active (w)))
		1576	return;
		1577
		1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1579	ev_stop (EV_A_ (W)w);
		1580	}
		1581
		1582	void
		1583	ev_check_start (EV_P_ struct ev_check *w)
		1584	{
		1585	if (expect_false (ev_is_active (w)))
		1586	return;
		1587
		1588	ev_start (EV_A_ (W)w, ++checkcnt);
		1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1590	checks [checkcnt - 1] = w;
		1591	}
		1592
		1593	void
		1594	ev_check_stop (EV_P_ struct ev_check *w)
		1595	{
		1596	ev_clear_pending (EV_A_ (W)w);
		1597	if (expect_false (!ev_is_active (w)))
		1598	return;
		1599
		1600	checks [((W)w)->active - 1] = checks [--checkcnt];
		1601	ev_stop (EV_A_ (W)w);
1031	}	1602	}
1032		1603
1033	#ifndef SA_RESTART	1604	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1605	# define SA_RESTART 0
1035	#endif	1606	#endif
1036		1607
1037	void	1608	void
1038	ev_signal_start (struct ev_signal *w)	1609	ev_signal_start (EV_P_ struct ev_signal *w)
1039	{	1610	{
		1611	#if EV_MULTIPLICITY
		1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1613	#endif
1040	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1041	return;	1615	return;
1042		1616
1043	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1044		1618
1045	ev_start ((W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1622
1049	if (!w->next)	1623	if (!((WL)w)->next)
1050	{	1624	{
		1625	#if _WIN32
		1626	signal (w->signum, sighandler);
		1627	#else
1051	struct sigaction sa;	1628	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1631	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1632	sigaction (w->signum, &sa, 0);
		1633	#endif
1056	}	1634	}
1057	}	1635	}
1058		1636
1059	void	1637	void
1060	ev_signal_stop (struct ev_signal *w)	1638	ev_signal_stop (EV_P_ struct ev_signal *w)
1061	{	1639	{
1062	ev_clear_pending ((W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1064	return;	1642	return;
1065		1643
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1645	ev_stop (EV_A_ (W)w);
1068		1646
1069	if (!signals [w->signum - 1].head)	1647	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1648	signal (w->signum, SIG_DFL);
1071	}	1649	}
1072		1650
1073	void	1651	void
1074	ev_idle_start (struct ev_idle *w)
1075	{
1076	if (ev_is_active (w))
1077	return;
1078
1079	ev_start ((W)w, ++idlecnt);
1080	array_needsize (idles, idlemax, idlecnt, );
1081	idles [idlecnt - 1] = w;
1082	}
1083
1084	void
1085	ev_idle_stop (struct ev_idle *w)
1086	{
1087	ev_clear_pending ((W)w);
1088	if (ev_is_active (w))
1089	return;
1090
1091	idles [w->active - 1] = idles [--idlecnt];
1092	ev_stop ((W)w);
1093	}
1094
1095	void
1096	ev_prepare_start (struct ev_prepare *w)
1097	{
1098	if (ev_is_active (w))
1099	return;
1100
1101	ev_start ((W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );
1103	prepares [preparecnt - 1] = w;
1104	}
1105
1106	void
1107	ev_prepare_stop (struct ev_prepare *w)
1108	{
1109	ev_clear_pending ((W)w);
1110	if (ev_is_active (w))
1111	return;
1112
1113	prepares [w->active - 1] = prepares [--preparecnt];
1114	ev_stop ((W)w);
1115	}
1116
1117	void
1118	ev_check_start (struct ev_check *w)
1119	{
1120	if (ev_is_active (w))
1121	return;
1122
1123	ev_start ((W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );
1125	checks [checkcnt - 1] = w;
1126	}
1127
1128	void
1129	ev_check_stop (struct ev_check *w)
1130	{
1131	ev_clear_pending ((W)w);
1132	if (ev_is_active (w))
1133	return;
1134
1135	checks [w->active - 1] = checks [--checkcnt];
1136	ev_stop ((W)w);
1137	}
1138
1139	void
1140	ev_child_start (struct ev_child *w)	1652	ev_child_start (EV_P_ struct ev_child *w)
1141	{	1653	{
		1654	#if EV_MULTIPLICITY
		1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1656	#endif
1142	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1143	return;	1658	return;
1144		1659
1145	ev_start ((W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}	1662	}
1148		1663
1149	void	1664	void
1150	ev_child_stop (struct ev_child *w)	1665	ev_child_stop (EV_P_ struct ev_child *w)
1151	{	1666	{
1152	ev_clear_pending ((W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1154	return;	1669	return;
1155		1670
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1157	ev_stop ((W)w);	1672	ev_stop (EV_A_ (W)w);
1158	}	1673	}
		1674
		1675	#if EV_MULTIPLICITY
		1676	static void
		1677	embed_cb (EV_P_ struct ev_io *io, int revents)
		1678	{
		1679	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1680
		1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1682	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1683	}
		1684
		1685	void
		1686	ev_embed_start (EV_P_ struct ev_embed *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	{
		1692	struct ev_loop *loop = w->loop;
		1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1695	}
		1696
		1697	ev_io_start (EV_A_ &w->io);
		1698	ev_start (EV_A_ (W)w, 1);
		1699	}
		1700
		1701	void
		1702	ev_embed_stop (EV_P_ struct ev_embed *w)
		1703	{
		1704	ev_clear_pending (EV_A_ (W)w);
		1705	if (expect_false (!ev_is_active (w)))
		1706	return;
		1707
		1708	ev_io_stop (EV_A_ &w->io);
		1709	ev_stop (EV_A_ (W)w);
		1710	}
		1711	#endif
1159		1712
1160	/*****************************************************************************/	1713	/*****************************************************************************/
1161		1714
1162	struct ev_once	1715	struct ev_once
1163	{	1716	{
…		…
1166	void (cb)(int revents, void arg);	1719	void (cb)(int revents, void arg);
1167	void *arg;	1720	void *arg;
1168	};	1721	};
1169		1722
1170	static void	1723	static void
1171	once_cb (struct ev_once *once, int revents)	1724	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	1725	{
1173	void (cb)(int revents, void arg) = once->cb;	1726	void (cb)(int revents, void arg) = once->cb;
1174	void *arg = once->arg;	1727	void *arg = once->arg;
1175		1728
1176	ev_io_stop (&once->io);	1729	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	1730	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	1731	ev_free (once);
1179		1732
1180	cb (revents, arg);	1733	cb (revents, arg);
1181	}	1734	}
1182		1735
1183	static void	1736	static void
1184	once_cb_io (struct ev_io *w, int revents)	1737	once_cb_io (EV_P_ struct ev_io *w, int revents)
1185	{	1738	{
1186	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1739	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1187	}	1740	}
1188		1741
1189	static void	1742	static void
1190	once_cb_to (struct ev_timer *w, int revents)	1743	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1191	{	1744	{
1192	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1745	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1193	}	1746	}
1194		1747
1195	void	1748	void
1196	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1749	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1197	{	1750	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	1751	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1199		1752
1200	if (!once)	1753	if (expect_false (!once))
		1754	{
1201	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1755	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1202	else	1756	return;
1203	{	1757	}
		1758
1204	once->cb = cb;	1759	once->cb = cb;
1205	once->arg = arg;	1760	once->arg = arg;
1206		1761
1207	ev_watcher_init (&once->io, once_cb_io);	1762	ev_init (&once->io, once_cb_io);
1208	if (fd >= 0)	1763	if (fd >= 0)
1209	{	1764	{
1210	ev_io_set (&once->io, fd, events);	1765	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	1766	ev_io_start (EV_A_ &once->io);
1212	}	1767	}
1213		1768
1214	ev_watcher_init (&once->to, once_cb_to);	1769	ev_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	1770	if (timeout >= 0.)
1216	{	1771	{
1217	ev_timer_set (&once->to, timeout, 0.);	1772	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	1773	ev_timer_start (EV_A_ &once->to);
1219	}
1220	}
1221	}
1222
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{	1774	}
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}	1775	}
1300		1776
		1777	#ifdef __cplusplus
		1778	}
1301	#endif	1779	#endif
1302		1780
1303
1304
1305

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Comparing libev/ev.c (file contents): Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs. Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC