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

Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	111	#include <time.h>
50		112
		113	#include <signal.h>
		114
		115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.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
		124	# endif
		125	#endif
		126
51	/**/	127	/**/
52		128
53	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
54	# 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
55	#endif	135	#endif
56		136
57	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
59	#endif	139	#endif
60		140
61	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
62	# 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
63	#endif	147	#endif
64		148
65	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
67	#endif	151	#endif
68		152
		153	#ifndef EV_USE_KQUEUE
		154	# define EV_USE_KQUEUE 0
		155	#endif
		156
69	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
70	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
71	#endif	159	#endif
72		160
73	/**/	161	/**/
74		162
75	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
80	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
83	#endif	171	#endif
84		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
85	/**/	177	/**/
86		178
87	#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) */
88	#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) */
89	#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 */
90	/#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 */
91		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
92	#include "ev.h"	187	# include "ev.h"
		188	#endif
93		189
94	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	192	# define inline static inline
97	#else	193	#else
98	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
99	# define inline static	195	# define inline static
100	#endif	196	#endif
101		197
102	#define expect_false(expr) expect ((expr) != 0, 0)	198	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
104		200
		201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
105	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
108		210
109	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
110	ev_tstamp ev_now;	300	ev_tstamp ev_rt_now;
111	int ev_method;	301	#define VAR(name,decl) static decl;
		302	#include "ev_vars.h"
		303	#undef VAR
112		304
113	static int have_monotonic; /* runtime */	305	static int ev_default_loop_ptr;
114		306
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	307	#endif
116	static void (*method_modify)(int fd, int oev, int nev);
117	static void (*method_poll)(ev_tstamp timeout);
118		308
119	/*****************************************************************************/	309	/*****************************************************************************/
120		310
121	ev_tstamp	311	ev_tstamp
122	ev_time (void)	312	ev_time (void)
…		…
130	gettimeofday (&tv, 0);	320	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	321	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	322	#endif
133	}	323	}
134		324
135	static ev_tstamp	325	inline ev_tstamp
136	get_clock (void)	326	get_clock (void)
137	{	327	{
138	#if EV_USE_MONOTONIC	328	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	329	if (expect_true (have_monotonic))
140	{	330	{
…		…
145	#endif	335	#endif
146		336
147	return ev_time ();	337	return ev_time ();
148	}	338	}
149		339
		340	#if EV_MULTIPLICITY
		341	ev_tstamp
		342	ev_now (EV_P)
		343	{
		344	return ev_rt_now;
		345	}
		346	#endif
		347
150	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
151		349
152	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
153	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
154	{ \	352	{ \
155	int newcnt = cur; \	353	int newcnt = cur; \
156	do \	354	do \
157	{ \	355	{ \
158	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
159	} \	357	} \
160	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
161	\	359	\
162	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
163	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
164	cur = newcnt; \	362	cur = newcnt; \
165	}	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;
166		375
167	/*****************************************************************************/	376	/*****************************************************************************/
168
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178		377
179	static void	378	static void
180	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
181	{	380	{
182	while (count--)	381	while (count--)
…		…
187		386
188	++base;	387	++base;
189	}	388	}
190	}	389	}
191		390
192	typedef struct	391	void
		392	ev_feed_event (EV_P_ void *w, int revents)
193	{	393	{
194	W w;	394	W w_ = (W)w;
195	int events;
196	} ANPENDING;
197		395
198	static ANPENDING *pendings;	396	if (expect_false (w_->pending))
199	static int pendingmax, pendingcnt;
200
201	static void
202	event (W w, int events)
203	{
204	if (w->pending)
205	{	397	{
206	pendings [w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
207	return;	399	return;
208	}	400	}
209		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
210	w->pending = ++pendingcnt;	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
212	pendings [pendingcnt - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
213	pendings [pendingcnt - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
214	}	409	}
215		410
216	static void	411	static void
217	queue_events (W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	413	{
219	int i;	414	int i;
220		415
221	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
223	}	418	}
224		419
225	static void	420	inline void
226	fd_event (int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
227	{	422	{
228	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	424	struct ev_io *w;
230		425
231	for (w = anfd->head; w; w = w->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
232	{	427	{
233	int ev = w->events & events;	428	int ev = w->events & revents;
234		429
235	if (ev)	430	if (ev)
236	event ((W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
237	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
238	}	439	}
239		440
240	/*****************************************************************************/	441	/*****************************************************************************/
241		442
242	static int *fdchanges;	443	inline void
243	static int fdchangemax, fdchangecnt;	444	fd_reify (EV_P)
244
245	static void
246	fd_reify (void)
247	{	445	{
248	int i;	446	int i;
249		447
250	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
251	{	449	{
…		…
253	ANFD *anfd = anfds + fd;	451	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	452	struct ev_io *w;
255		453
256	int events = 0;	454	int events = 0;
257		455
258	for (w = anfd->head; w; w = w->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
259	events \|= w->events;	457	events \|= w->events;
260		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
261	anfd->reify = 0;	468	anfd->reify = 0;
262		469
263	if (anfd->events != events)
264	{
265	method_modify (fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	471	anfd->events = events;
267	}
268	}	472	}
269		473
270	fdchangecnt = 0;	474	fdchangecnt = 0;
271	}	475	}
272		476
273	static void	477	static void
274	fd_change (int fd)	478	fd_change (EV_P_ int fd)
275	{	479	{
276	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
277	return;	481	return;
278		482
279	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
280		484
281	++fdchangecnt;	485	++fdchangecnt;
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
283	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
284	}	488	}
285		489
286	static void	490	static void
287	fd_kill (int fd)	491	fd_kill (EV_P_ int fd)
288	{	492	{
289	struct ev_io *w;	493	struct ev_io *w;
290		494
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
293	{	496	{
294	ev_io_stop (w);	497	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
296	}	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
297	}	510	}
298		511
299	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
300	static void	513	static void
301	fd_ebadf (void)	514	fd_ebadf (EV_P)
302	{	515	{
303	int fd;	516	int fd;
304		517
305	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	519	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
308	fd_kill (fd);	521	fd_kill (EV_A_ fd);
309	}	522	}
310		523
311	/* 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 */
312	static void	525	static void
313	fd_enomem (void)	526	fd_enomem (EV_P)
314	{	527	{
315	int fd = anfdmax;	528	int fd;
316		529
317	while (fd--)	530	for (fd = anfdmax; fd--; )
318	if (anfds [fd].events)	531	if (anfds [fd].events)
319	{	532	{
320	close (fd);
321	fd_kill (fd);	533	fd_kill (EV_A_ fd);
322	return;	534	return;
323	}	535	}
324	}	536	}
325		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
326	/*****************************************************************************/	553	/*****************************************************************************/
327		554
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	555	static void
335	upheap (WT *timers, int k)	556	upheap (WT *heap, int k)
336	{	557	{
337	WT w = timers [k];	558	WT w = heap [k];
338		559
339	while (k && timers [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
340	{	561	{
341	timers [k] = timers [k >> 1];	562	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
343	k >>= 1;	564	k >>= 1;
344	}	565	}
345		566
346	timers [k] = w;	567	heap [k] = w;
347	timers [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
348		569
349	}	570	}
350		571
351	static void	572	static void
352	downheap (WT *timers, int N, int k)	573	downheap (WT *heap, int N, int k)
353	{	574	{
354	WT w = timers [k];	575	WT w = heap [k];
355		576
356	while (k < (N >> 1))	577	while (k < (N >> 1))
357	{	578	{
358	int j = k << 1;	579	int j = k << 1;
359		580
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	582	++j;
362		583
363	if (w->at <= timers [j]->at)	584	if (w->at <= heap [j]->at)
364	break;	585	break;
365		586
366	timers [k] = timers [j];	587	heap [k] = heap [j];
367	timers [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
368	k = j;	589	k = j;
369	}	590	}
370		591
371	timers [k] = w;	592	heap [k] = w;
372	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);
373	}	601	}
374		602
375	/*****************************************************************************/	603	/*****************************************************************************/
376		604
377	typedef struct	605	typedef struct
378	{	606	{
379	struct ev_signal *head;	607	WL head;
380	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
381	} ANSIG;	609	} ANSIG;
382		610
383	static ANSIG *signals;	611	static ANSIG *signals;
384	static int signalmax;	612	static int signalmax;
…		…
400	}	628	}
401		629
402	static void	630	static void
403	sighandler (int signum)	631	sighandler (int signum)
404	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
405	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
406		638
407	if (!gotsig)	639	if (!gotsig)
408	{	640	{
		641	int old_errno = errno;
409	gotsig = 1;	642	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
		644	errno = old_errno;
411	}	645	}
412	}	646	}
413		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
414	static void	668	static void
415	sigcb (struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	670	{
417	struct ev_signal *w;
418	int signum;	671	int signum;
419		672
420	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	674	gotsig = 0;
422		675
423	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
424	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
425	{	678	ev_feed_signal_event (EV_A_ signum + 1);
426	signals [signum].gotsig = 0;
427
428	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);
430	}
431	}	679	}
432		680
433	static void	681	static void
434	siginit (void)	682	fd_intern (int fd)
435	{	683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	688	fcntl (fd, F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438
439	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	689	fcntl (fd, F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	690	#endif
		691	}
		692
		693	static void
		694	siginit (EV_P)
		695	{
		696	fd_intern (sigpipe [0]);
		697	fd_intern (sigpipe [1]);
442		698
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	700	ev_io_start (EV_A_ &sigev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	702	}
446		703
447	/*****************************************************************************/	704	/*****************************************************************************/
448		705
449	static struct ev_idle **idles;
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459
460	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
461	static struct ev_signal childev;	710	static struct ev_signal childev;
462		711
463	#ifndef WCONTINUED	712	#ifndef WCONTINUED
464	# define WCONTINUED 0	713	# define WCONTINUED 0
465	#endif	714	#endif
466		715
467	static void	716	static void
468	childcb (struct ev_signal *sw, int revents)	717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	718	{
470	struct ev_child *w;	719	struct ev_child *w;
		720
		721	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		722	if (w->pid == pid \|\| !w->pid)
		723	{
		724	ev_priority (w) = ev_priority (sw); /* need to do it now */
		725	w->rpid = pid;
		726	w->rstatus = status;
		727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		728	}
		729	}
		730
		731	static void
		732	childcb (EV_P_ struct ev_signal *sw, int revents)
		733	{
471	int pid, status;	734	int pid, status;
472		735
473	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	737	{
475	if (w->pid == pid \|\| !w->pid)	738	/* make sure we are called again until all childs have been reaped */
476	{	739	/* we need to do it this way so that the callback gets called before we continue */
477	w->status = status;	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
478	event ((W)w, EV_CHILD);	741
479	}	742	child_reap (EV_A_ sw, pid, pid, status);
		743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
		744	}
480	}	745	}
		746
		747	#endif
481		748
482	/*****************************************************************************/	749	/*****************************************************************************/
483		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
		754	#if EV_USE_KQUEUE
		755	# include "ev_kqueue.c"
		756	#endif
484	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	758	# include "ev_epoll.c"
486	#endif	759	#endif
487	#if EV_USE_POLL	760	#if EV_USE_POLL
488	# include "ev_poll.c"	761	# include "ev_poll.c"
…		…
501	ev_version_minor (void)	774	ev_version_minor (void)
502	{	775	{
503	return EV_VERSION_MINOR;	776	return EV_VERSION_MINOR;
504	}	777	}
505		778
506	/* 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 */
507	static int	780	static int
508	enable_secure ()	781	enable_secure (void)
509	{	782	{
		783	#ifdef _WIN32
		784	return 0;
		785	#else
510	return getuid () != geteuid ()	786	return getuid () != geteuid ()
511	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
		788	#endif
512	}	789	}
513		790
514	int ev_init (int methods)	791	unsigned int
		792	ev_supported_backends (void)
515	{	793	{
516	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)
517	{	841	{
518	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
519	{	843	{
520	struct timespec ts;	844	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	846	have_monotonic = 1;
523	}	847	}
524	#endif	848	#endif
525		849
526	ev_now = ev_time ();	850	ev_rt_now = ev_time ();
527	now = get_clock ();	851	mn_now = get_clock ();
528	now_floor = now;	852	now_floor = mn_now;
529	diff = ev_now - now;	853	rtmn_diff = ev_rt_now - mn_now;
530		854
531	if (pipe (sigpipe))	855	if (!(flags & EVFLAG_NOENV)
532	return 0;	856	&& !enable_secure ()
533		857	&& getenv ("LIBEV_FLAGS"))
534	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
537	else
538	methods = EVMETHOD_ANY;
539		859
540	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
		867	#if EV_USE_KQUEUE
		868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		869	#endif
541	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
543	#endif	872	#endif
544	#if EV_USE_POLL	873	#if EV_USE_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
546	#endif	875	#endif
547	#if EV_USE_SELECT	876	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
549	#endif	878	#endif
550		879
551	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))
552	{	1007	{
553	ev_watcher_init (&sigev, sigcb);
554	siginit ();	1008	siginit (EV_A);
555		1009
		1010	#ifndef _WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
		1012	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	1013	ev_signal_start (EV_A_ &childev);
		1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1015	#endif
558	}	1016	}
		1017	else
		1018	ev_default_loop_ptr = 0;
559	}	1019	}
560		1020
561	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;
562	}	1054	}
563		1055
564	/*****************************************************************************/	1056	/*****************************************************************************/
565		1057
566	void
567	ev_fork_prepare (void)
568	{
569	/* nop */
570	}
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif
585
586	ev_io_stop (&sigev);
587	close (sigpipe [0]);
588	close (sigpipe [1]);
589	pipe (sigpipe);
590	siginit ();
591	}
592
593	/*****************************************************************************/
594
595	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
596	call_pending (void)	1071	call_pending (EV_P)
597	{	1072	{
		1073	int pri;
		1074
		1075	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	1076	while (pendingcnt [pri])
599	{	1077	{
600	ANPENDING *p = pendings + --pendingcnt;	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		1079
602	if (p->w)	1080	if (expect_true (p->w))
603	{	1081	{
604	p->w->pending = 0;	1082	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
606	}	1084	}
607	}	1085	}
608	}	1086	}
609		1087
610	static void	1088	inline void
611	timers_reify (void)	1089	timers_reify (EV_P)
612	{	1090	{
613	while (timercnt && timers [0]->at <= now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
614	{	1092	{
615	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)));
616		1096
617	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
618	if (w->repeat)	1098	if (w->repeat)
619	{	1099	{
620	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
621	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
622	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
623	}	1107	}
624	else	1108	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		1110
627	event ((W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
628	}	1112	}
629	}	1113	}
630		1114
631	static void	1115	#if EV_PERIODICS
		1116	inline void
632	periodics_reify (void)	1117	periodics_reify (EV_P)
633	{	1118	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
635	{	1120	{
636	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
637		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
638	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
639	if (w->interval)	1126	if (w->reschedule_cb)
640	{	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	{
641	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;
642	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));
643	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
644	}	1137	}
645	else	1138	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		1140
648	event ((W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
649	}	1142	}
650	}	1143	}
651		1144
652	static void	1145	static void
653	periodics_reschedule (ev_tstamp diff)	1146	periodics_reschedule (EV_P)
654	{	1147	{
655	int i;	1148	int i;
656		1149
657	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
659	{	1152	{
660	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
661		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
662	if (w->interval)	1157	else if (w->interval)
663	{
664	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;
665
666	if (fabs (diff) >= 1e-4)
667	{
668	ev_periodic_stop (w);
669	ev_periodic_start (w);
670
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}
673	}
674	}	1159	}
675	}
676		1160
677	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
678	time_update_monotonic (void)	1168	time_update_monotonic (EV_P)
679	{	1169	{
680	now = get_clock ();	1170	mn_now = get_clock ();
681		1171
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	1173	{
684	ev_now = now + diff;	1174	ev_rt_now = rtmn_diff + mn_now;
685	return 0;	1175	return 0;
686	}	1176	}
687	else	1177	else
688	{	1178	{
689	now_floor = now;	1179	now_floor = mn_now;
690	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
691	return 1;	1181	return 1;
692	}	1182	}
693	}	1183	}
694		1184
695	static void	1185	inline void
696	time_update (void)	1186	time_update (EV_P)
697	{	1187	{
698	int i;	1188	int i;
699		1189
700	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	1191	if (expect_true (have_monotonic))
702	{	1192	{
703	if (time_update_monotonic ())	1193	if (time_update_monotonic (EV_A))
704	{	1194	{
705	ev_tstamp odiff = diff;	1195	ev_tstamp odiff = rtmn_diff;
706		1196
707	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 */
708	{	1198	{
709	diff = ev_now - now;	1199	rtmn_diff = ev_rt_now - mn_now;
710		1200
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	1202	return; /* all is well */
713		1203
714	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
715	now = get_clock ();	1205	mn_now = get_clock ();
716	now_floor = now;	1206	now_floor = mn_now;
717	}	1207	}
718		1208
		1209	# if EV_PERIODICS
719	periodics_reschedule (diff - odiff);	1210	periodics_reschedule (EV_A);
		1211	# endif
720	/* 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) */
721	}	1214	}
722	}	1215	}
723	else	1216	else
724	#endif	1217	#endif
725	{	1218	{
726	ev_now = ev_time ();	1219	ev_rt_now = ev_time ();
727		1220
728	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))
729	{	1222	{
		1223	#if EV_PERIODICS
730	periodics_reschedule (ev_now - now);	1224	periodics_reschedule (EV_A);
		1225	#endif
731		1226
732	/* 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 */
733	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
735	}	1230	}
736		1231
737	now = ev_now;	1232	mn_now = ev_rt_now;
738	}	1233	}
739	}	1234	}
740		1235
741	int ev_loop_done;	1236	void
		1237	ev_ref (EV_P)
		1238	{
		1239	++activecnt;
		1240	}
742		1241
		1242	void
		1243	ev_unref (EV_P)
		1244	{
		1245	--activecnt;
		1246	}
		1247
		1248	static int loop_done;
		1249
		1250	void
743	void ev_loop (int flags)	1251	ev_loop (EV_P_ int flags)
744	{	1252	{
745	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
747		1256
748	do	1257	while (activecnt)
749	{	1258	{
750	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
752	{	1261	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	1263	call_pending (EV_A);
755	}	1264	}
756		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
757	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
758	fd_reify ();	1271	fd_reify (EV_A);
759		1272
760	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
761		1276
762	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
763	always have timers, we just calculate it always */	1278	block = 0.; /* do not block at all */
		1279	else
		1280	{
		1281	/* update time to cancel out callback processing overhead */
764	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
766	time_update_monotonic ();	1284	time_update_monotonic (EV_A);
767	else	1285	else
768	#endif	1286	#endif
769	{	1287	{
770	ev_now = ev_time ();	1288	ev_rt_now = ev_time ();
771	now = ev_now;	1289	mn_now = ev_rt_now;
772	}	1290	}
773		1291
774	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
775	block = 0.;
776	else
777	{
778	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
779		1293
780	if (timercnt)	1294	if (timercnt)
781	{	1295	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
783	if (block > to) block = to;	1297	if (block > to) block = to;
784	}	1298	}
785		1299
		1300	#if EV_PERIODICS
786	if (periodiccnt)	1301	if (periodiccnt)
787	{	1302	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
789	if (block > to) block = to;	1304	if (block > to) block = to;
790	}	1305	}
		1306	#endif
791		1307
792	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
793	}	1309	}
794		1310
795	method_poll (block);	1311	backend_poll (EV_A_ block);
		1312	}
796		1313
797	/* update ev_now, do magic */	1314	/* update ev_rt_now, do magic */
798	time_update ();	1315	time_update (EV_A);
799		1316
800	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
802	periodics_reify (); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
803		1322
804	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		1326
808	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
809	if (checkcnt)	1328	if (expect_false (checkcnt))
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		1330
812	call_pending ();	1331	call_pending (EV_A);
813	}
814	while (!ev_loop_done);
815		1332
816	if (ev_loop_done != 2)	1333	if (expect_false (loop_done))
		1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
		1339	}
		1340
		1341	void
		1342	ev_unloop (EV_P_ int how)
		1343	{
817	ev_loop_done = 0;	1344	loop_done = how;
818	}	1345	}
819		1346
820	/*****************************************************************************/	1347	/*****************************************************************************/
821		1348
822	static void	1349	inline void
823	wlist_add (WL *head, WL elem)	1350	wlist_add (WL *head, WL elem)
824	{	1351	{
825	elem->next = *head;	1352	elem->next = *head;
826	*head = elem;	1353	*head = elem;
827	}	1354	}
828		1355
829	static void	1356	inline void
830	wlist_del (WL *head, WL elem)	1357	wlist_del (WL *head, WL elem)
831	{	1358	{
832	while (*head)	1359	while (*head)
833	{	1360	{
834	if (*head == elem)	1361	if (*head == elem)
…		…
839		1366
840	head = &(*head)->next;	1367	head = &(*head)->next;
841	}	1368	}
842	}	1369	}
843		1370
844	static void	1371	inline void
845	ev_clear_pending (W w)	1372	ev_clear_pending (EV_P_ W w)
846	{	1373	{
847	if (w->pending)	1374	if (w->pending)
848	{	1375	{
849	pendings [w->pending - 1].w = 0;	1376	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1377	w->pending = 0;
851	}	1378	}
852	}	1379	}
853		1380
854	static void	1381	inline void
855	ev_start (W w, int active)	1382	ev_start (EV_P_ W w, int active)
856	{	1383	{
		1384	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1385	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1386
857	w->active = active;	1387	w->active = active;
		1388	ev_ref (EV_A);
858	}	1389	}
859		1390
860	static void	1391	inline void
861	ev_stop (W w)	1392	ev_stop (EV_P_ W w)
862	{	1393	{
		1394	ev_unref (EV_A);
863	w->active = 0;	1395	w->active = 0;
864	}	1396	}
865		1397
866	/*****************************************************************************/	1398	/*****************************************************************************/
867		1399
868	void	1400	void
869	ev_io_start (struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
870	{	1402	{
871	int fd = w->fd;	1403	int fd = w->fd;
872		1404
873	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
874	return;	1406	return;
875		1407
876	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
877		1409
878	ev_start ((W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1413
882	fd_change (fd);	1414	fd_change (EV_A_ fd);
883	}	1415	}
884		1416
885	void	1417	void
886	ev_io_stop (struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1419	{
888	ev_clear_pending ((W)w);	1420	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
890	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
891		1425
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1427	ev_stop (EV_A_ (W)w);
894		1428
895	fd_change (w->fd);	1429	fd_change (EV_A_ w->fd);
896	}	1430	}
897		1431
898	void	1432	void
899	ev_timer_start (struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1434	{
901	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
902	return;	1436	return;
903		1437
904	w->at += now;	1438	((WT)w)->at += mn_now;
905		1439
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1441
908	ev_start ((W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
910	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
912	}
913		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1448	}
		1449
914	void	1450	void
915	ev_timer_stop (struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1452	{
917	ev_clear_pending ((W)w);	1453	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
919	return;	1455	return;
920		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
921	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
922	{	1460	{
923	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
924	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
925	}	1463	}
926		1464
927	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
928		1466
929	ev_stop ((W)w);	1467	ev_stop (EV_A_ (W)w);
930	}	1468	}
931		1469
932	void	1470	void
933	ev_timer_again (struct ev_timer *w)	1471	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1472	{
935	if (ev_is_active (w))	1473	if (ev_is_active (w))
936	{	1474	{
937	if (w->repeat)	1475	if (w->repeat)
938	{	1476	{
939	w->at = now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
941	}	1479	}
942	else	1480	else
943	ev_timer_stop (w);	1481	ev_timer_stop (EV_A_ w);
944	}	1482	}
945	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
946	ev_timer_start (w);	1486	ev_timer_start (EV_A_ w);
		1487	}
947	}	1488	}
948		1489
		1490	#if EV_PERIODICS
949	void	1491	void
950	ev_periodic_start (struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1493	{
952	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
953	return;	1495	return;
954		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1502	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
960		1505
961	ev_start ((W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
963	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
965	}
966		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1512	}
		1513
967	void	1514	void
968	ev_periodic_stop (struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1516	{
970	ev_clear_pending ((W)w);	1517	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
972	return;	1519	return;
973		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
974	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
975	{	1524	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
978	}	1527	}
979		1528
980	ev_stop ((W)w);	1529	ev_stop (EV_A_ (W)w);
981	}	1530	}
982		1531
983	void	1532	void
		1533	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1534	{
		1535	/* TODO: use adjustheap and recalculation */
		1536	ev_periodic_stop (EV_A_ w);
		1537	ev_periodic_start (EV_A_ w);
		1538	}
		1539	#endif
		1540
		1541	void
		1542	ev_idle_start (EV_P_ struct ev_idle *w)
		1543	{
		1544	if (expect_false (ev_is_active (w)))
		1545	return;
		1546
		1547	ev_start (EV_A_ (W)w, ++idlecnt);
		1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1549	idles [idlecnt - 1] = w;
		1550	}
		1551
		1552	void
		1553	ev_idle_stop (EV_P_ struct ev_idle *w)
		1554	{
		1555	ev_clear_pending (EV_A_ (W)w);
		1556	if (expect_false (!ev_is_active (w)))
		1557	return;
		1558
		1559	idles [((W)w)->active - 1] = idles [--idlecnt];
		1560	ev_stop (EV_A_ (W)w);
		1561	}
		1562
		1563	void
		1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1565	{
		1566	if (expect_false (ev_is_active (w)))
		1567	return;
		1568
		1569	ev_start (EV_A_ (W)w, ++preparecnt);
		1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1571	prepares [preparecnt - 1] = w;
		1572	}
		1573
		1574	void
		1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1576	{
		1577	ev_clear_pending (EV_A_ (W)w);
		1578	if (expect_false (!ev_is_active (w)))
		1579	return;
		1580
		1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1582	ev_stop (EV_A_ (W)w);
		1583	}
		1584
		1585	void
		1586	ev_check_start (EV_P_ struct ev_check *w)
		1587	{
		1588	if (expect_false (ev_is_active (w)))
		1589	return;
		1590
		1591	ev_start (EV_A_ (W)w, ++checkcnt);
		1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1593	checks [checkcnt - 1] = w;
		1594	}
		1595
		1596	void
		1597	ev_check_stop (EV_P_ struct ev_check *w)
		1598	{
		1599	ev_clear_pending (EV_A_ (W)w);
		1600	if (expect_false (!ev_is_active (w)))
		1601	return;
		1602
		1603	checks [((W)w)->active - 1] = checks [--checkcnt];
		1604	ev_stop (EV_A_ (W)w);
		1605	}
		1606
		1607	#ifndef SA_RESTART
		1608	# define SA_RESTART 0
		1609	#endif
		1610
		1611	void
984	ev_signal_start (struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
985	{	1613	{
		1614	#if EV_MULTIPLICITY
		1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1616	#endif
986	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
987	return;	1618	return;
988		1619
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1621
991	ev_start ((W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1625
995	if (!w->next)	1626	if (!((WL)w)->next)
996	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
997	struct sigaction sa;	1631	struct sigaction sa;
998	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1002	}	1637	}
1003	}	1638	}
1004		1639
1005	void	1640	void
1006	ev_signal_stop (struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1642	{
1008	ev_clear_pending ((W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1010	return;	1645	return;
1011		1646
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1648	ev_stop (EV_A_ (W)w);
1014		1649
1015	if (!signals [w->signum - 1].head)	1650	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1651	signal (w->signum, SIG_DFL);
1017	}	1652	}
1018		1653
1019	void	1654	void
1020	ev_idle_start (struct ev_idle *w)
1021	{
1022	if (ev_is_active (w))
1023	return;
1024
1025	ev_start ((W)w, ++idlecnt);
1026	array_needsize (idles, idlemax, idlecnt, );
1027	idles [idlecnt - 1] = w;
1028	}
1029
1030	void
1031	ev_idle_stop (struct ev_idle *w)
1032	{
1033	ev_clear_pending ((W)w);
1034	if (ev_is_active (w))
1035	return;
1036
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1087	{	1656	{
		1657	#if EV_MULTIPLICITY
		1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1659	#endif
1088	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1089	return;	1661	return;
1090		1662
1091	ev_start ((W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}	1665	}
1094		1666
1095	void	1667	void
1096	ev_child_stop (struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1097	{	1669	{
1098	ev_clear_pending ((W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1099	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1100	return;	1672	return;
1101		1673
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1675	ev_stop (EV_A_ (W)w);
1104	}	1676	}
		1677
		1678	#if EV_MULTIPLICITY
		1679	static void
		1680	embed_cb (EV_P_ struct ev_io *io, int revents)
		1681	{
		1682	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1683
		1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1685	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1686	}
		1687
		1688	void
		1689	ev_embed_start (EV_P_ struct ev_embed *w)
		1690	{
		1691	if (expect_false (ev_is_active (w)))
		1692	return;
		1693
		1694	{
		1695	struct ev_loop *loop = w->loop;
		1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1698	}
		1699
		1700	ev_io_start (EV_A_ &w->io);
		1701	ev_start (EV_A_ (W)w, 1);
		1702	}
		1703
		1704	void
		1705	ev_embed_stop (EV_P_ struct ev_embed *w)
		1706	{
		1707	ev_clear_pending (EV_A_ (W)w);
		1708	if (expect_false (!ev_is_active (w)))
		1709	return;
		1710
		1711	ev_io_stop (EV_A_ &w->io);
		1712	ev_stop (EV_A_ (W)w);
		1713	}
		1714	#endif
1105		1715
1106	/*****************************************************************************/	1716	/*****************************************************************************/
1107		1717
1108	struct ev_once	1718	struct ev_once
1109	{	1719	{
…		…
1112	void (cb)(int revents, void arg);	1722	void (cb)(int revents, void arg);
1113	void *arg;	1723	void *arg;
1114	};	1724	};
1115		1725
1116	static void	1726	static void
1117	once_cb (struct ev_once *once, int revents)	1727	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1728	{
1119	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1120	void *arg = once->arg;	1730	void *arg = once->arg;
1121		1731
1122	ev_io_stop (&once->io);	1732	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1734	ev_free (once);
1125		1735
1126	cb (revents, arg);	1736	cb (revents, arg);
1127	}	1737	}
1128		1738
1129	static void	1739	static void
1130	once_cb_io (struct ev_io *w, int revents)	1740	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1741	{
1132	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1742	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1133	}	1743	}
1134		1744
1135	static void	1745	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1746	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1747	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1748	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1139	}	1749	}
1140		1750
1141	void	1751	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1752	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1143	{	1753	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1145		1755
1146	if (!once)	1756	if (expect_false (!once))
		1757	{
1147	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1148	else	1759	return;
1149	{	1760	}
		1761
1150	once->cb = cb;	1762	once->cb = cb;
1151	once->arg = arg;	1763	once->arg = arg;
1152		1764
1153	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1766	if (fd >= 0)
1155	{	1767	{
1156	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1769	ev_io_start (EV_A_ &once->io);
1158	}	1770	}
1159		1771
1160	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1773	if (timeout >= 0.)
1162	{	1774	{
1163	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1776	ev_timer_start (EV_A_ &once->to);
1165	}
1166	}
1167	}
1168
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{	1777	}
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}	1778	}
1246		1779
		1780	#ifdef __cplusplus
		1781	}
1247	#endif	1782	#endif
1248		1783
1249
1250
1251

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Comparing libev/ev.c (file contents): Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs. Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC