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

Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.106 by root, Mon Nov 12 01:07:50 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	76	#include <time.h>
		77
		78	#include <signal.h>
		79
		80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
		89	# endif
		90	#endif
50		91
51	/**/	92	/**/
52		93
53	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
55	#endif	96	#endif
56		97
57	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
59	#endif	101	#endif
60		102
61	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
63	#endif	109	#endif
64		110
65	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
67	#endif	113	#endif
68		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
69	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
71	#endif	121	#endif
72		122
73	/**/	123	/**/
		124
		125	/* darwin simply cnanot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
74		130
75	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
76	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
77	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
78	#endif	134	#endif
79		135
80	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
83	#endif	143	#endif
84		144
85	/**/	145	/**/
86		146
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#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) */	148	#define MAX_BLOCKTIME 59.731 /* 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 */	149	#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 */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
91		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
92	#include "ev.h"	155	# include "ev.h"
		156	#endif
93		157
94	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	160	# define inline inline
97	#else	161	#else
…		…
103	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
104		168
105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
107		171
		172	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		173
108	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
111		177
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
		184	/*****************************************************************************/
		185
		186	static void (syserr_cb)(const char msg);
		187
		188	void ev_set_syserr_cb (void (cb)(const char msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void (alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void (cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
		234	typedef struct
		235	{
		236	WL head;
		237	unsigned char events;
		238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
		242	} ANFD;
		243
		244	typedef struct
		245	{
		246	W w;
		247	int events;
		248	} ANPENDING;
		249
		250	#if EV_MULTIPLICITY
		251
		252	struct ev_loop
		253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
		256	#define VAR(name,decl) decl;
		257	#include "ev_vars.h"
		258	#undef VAR
		259	};
		260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
		264
		265	#else
		266
113	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
114	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
115		271
116	static int have_monotonic; /* runtime */	272	static int default_loop;
117		273
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		275
122	/*****************************************************************************/	276	/*****************************************************************************/
123		277
124	ev_tstamp	278	ev_tstamp
125	ev_time (void)	279	ev_time (void)
…		…
133	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	289	#endif
136	}	290	}
137		291
138	static ev_tstamp	292	inline ev_tstamp
139	get_clock (void)	293	get_clock (void)
140	{	294	{
141	#if EV_USE_MONOTONIC	295	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	296	if (expect_true (have_monotonic))
143	{	297	{
…		…
148	#endif	302	#endif
149		303
150	return ev_time ();	304	return ev_time ();
151	}	305	}
152		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) ((n) \| 4 & ~3)
154		316
155	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
157	{ \	319	{ \
158	int newcnt = cur; \	320	int newcnt = cur; \
159	do \	321	do \
160	{ \	322	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
162	} \	324	} \
163	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
164	\	326	\
165	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
166	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	329	cur = newcnt; \
168	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
169		342
170	/*****************************************************************************/	343	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		344
182	static void	345	static void
183	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
184	{	347	{
185	while (count--)	348	while (count--)
…		…
190		353
191	++base;	354	++base;
192	}	355	}
193	}	356	}
194		357
195	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
196	{	360	{
197	W w;	361	W w_ = (W)w;
198	int events;
199	} ANPENDING;
200		362
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void
205	event (W w, int events)
206	{
207	if (w->pending)	363	if (w_->pending)
208	{	364	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
210	return;	366	return;
211	}	367	}
212		368
213	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
214	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
217	}	373	}
218		374
219	static void	375	static void
220	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	377	{
222	int i;	378	int i;
223		379
224	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
226	}	382	}
227		383
228	static void	384	inline void
229	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
230	{	386	{
231	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	388	struct ev_io *w;
233		389
234	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	391	{
236	int ev = w->events & events;	392	int ev = w->events & revents;
237		393
238	if (ev)	394	if (ev)
239	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
240	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
241	}	403	}
242		404
243	/*****************************************************************************/	405	/*****************************************************************************/
244		406
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	407	static void
249	fd_reify (void)	408	fd_reify (EV_P)
250	{	409	{
251	int i;	410	int i;
252		411
253	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
254	{	413	{
…		…
256	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	416	struct ev_io *w;
258		417
259	int events = 0;	418	int events = 0;
260		419
261	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	421	events \|= w->events;
263		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
264	anfd->reify = 0;	432	anfd->reify = 0;
265		433
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	435	anfd->events = events;
270	}
271	}	436	}
272		437
273	fdchangecnt = 0;	438	fdchangecnt = 0;
274	}	439	}
275		440
276	static void	441	static void
277	fd_change (int fd)	442	fd_change (EV_P_ int fd)
278	{	443	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
280	return;	445	return;
281		446
282	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
283		448
284	++fdchangecnt;	449	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
286	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
287	}	452	}
288		453
289	static void	454	static void
290	fd_kill (int fd)	455	fd_kill (EV_P_ int fd)
291	{	456	{
292	struct ev_io *w;	457	struct ev_io *w;
293		458
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
296	{	460	{
297	ev_io_stop (w);	461	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
300	}	474	}
301		475
302	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
303	static void	477	static void
304	fd_ebadf (void)	478	fd_ebadf (EV_P)
305	{	479	{
306	int fd;	480	int fd;
307		481
308	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	483	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
311	fd_kill (fd);	485	fd_kill (EV_A_ fd);
312	}	486	}
313		487
314	/* called on ENOMEM in select/poll to kill some fds and retry */	488	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	489	static void
316	fd_enomem (void)	490	fd_enomem (EV_P)
317	{	491	{
318	int fd = anfdmax;	492	int fd;
319		493
320	while (fd--)	494	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	495	if (anfds [fd].events)
322	{	496	{
323	close (fd);
324	fd_kill (fd);	497	fd_kill (EV_A_ fd);
325	return;	498	return;
326	}	499	}
327	}	500	}
328		501
		502	/* usually called after fork if method needs to re-arm all fds from scratch */
		503	static void
		504	fd_rearm_all (EV_P)
		505	{
		506	int fd;
		507
		508	/* this should be highly optimised to not do anything but set a flag */
		509	for (fd = 0; fd < anfdmax; ++fd)
		510	if (anfds [fd].events)
		511	{
		512	anfds [fd].events = 0;
		513	fd_change (EV_A_ fd);
		514	}
		515	}
		516
329	/*****************************************************************************/	517	/*****************************************************************************/
330		518
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	519	static void
338	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
339	{	521	{
340	WT w = timers [k];	522	WT w = heap [k];
341		523
342	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
343	{	525	{
344	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
346	k >>= 1;	528	k >>= 1;
347	}	529	}
348		530
349	timers [k] = w;	531	heap [k] = w;
350	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
351		533
352	}	534	}
353		535
354	static void	536	static void
355	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
356	{	538	{
357	WT w = timers [k];	539	WT w = heap [k];
358		540
359	while (k < (N >> 1))	541	while (k < (N >> 1))
360	{	542	{
361	int j = k << 1;	543	int j = k << 1;
362		544
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	546	++j;
365		547
366	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
367	break;	549	break;
368		550
369	timers [k] = timers [j];	551	heap [k] = heap [j];
370	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
371	k = j;	553	k = j;
372	}	554	}
373		555
374	timers [k] = w;	556	heap [k] = w;
375	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
376	}	565	}
377		566
378	/*****************************************************************************/	567	/*****************************************************************************/
379		568
380	typedef struct	569	typedef struct
381	{	570	{
382	struct ev_signal *head;	571	WL head;
383	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
384	} ANSIG;	573	} ANSIG;
385		574
386	static ANSIG *signals;	575	static ANSIG *signals;
387	static int signalmax;	576	static int signalmax;
…		…
403	}	592	}
404		593
405	static void	594	static void
406	sighandler (int signum)	595	sighandler (int signum)
407	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
408	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
409		602
410	if (!gotsig)	603	if (!gotsig)
411	{	604	{
		605	int old_errno = errno;
412	gotsig = 1;	606	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
414	}	609	}
415	}	610	}
416		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 \|\| signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
417	static void	632	static void
418	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	634	{
420	struct ev_signal *w;
421	int signum;	635	int signum;
422		636
423	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	638	gotsig = 0;
425		639
426	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
427	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
428	{	642	ev_feed_signal_event (EV_A_ signum + 1);
429	signals [signum].gotsig = 0;
430
431	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);
433	}
434	}	643	}
435		644
436	static void	645	inline void
437	siginit (void)	646	fd_intern (int fd)
438	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	fcntl (fd, F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441
442	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	654	#endif
		655	}
		656
		657	static void
		658	siginit (EV_P)
		659	{
		660	fd_intern (sigpipe [0]);
		661	fd_intern (sigpipe [1]);
445		662
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	666	}
449		667
450	/*****************************************************************************/	668	/*****************************************************************************/
451		669
452	static struct ev_idle **idles;
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
464	static struct ev_signal childev;	674	static struct ev_signal childev;
465		675
466	#ifndef WCONTINUED	676	#ifndef WCONTINUED
467	# define WCONTINUED 0	677	# define WCONTINUED 0
468	#endif	678	#endif
469		679
470	static void	680	static void
471	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	682	{
473	struct ev_child *w;	683	struct ev_child *w;
		684
		685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		686	if (w->pid == pid \|\| !w->pid)
		687	{
		688	ev_priority (w) = ev_priority (sw); /* need to do it now */
		689	w->rpid = pid;
		690	w->rstatus = status;
		691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		692	}
		693	}
		694
		695	static void
		696	childcb (EV_P_ struct ev_signal *sw, int revents)
		697	{
474	int pid, status;	698	int pid, status;
475		699
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
478	if (w->pid == pid \|\| !w->pid)	702	/* make sure we are called again until all childs have been reaped */
479	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	704
481	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
482	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
483	}	708	}
		709
		710	#endif
484		711
485	/*****************************************************************************/	712	/*****************************************************************************/
486		713
		714	#if EV_USE_KQUEUE
		715	# include "ev_kqueue.c"
		716	#endif
487	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	718	# include "ev_epoll.c"
489	#endif	719	#endif
490	#if EV_USE_POLL	720	#if EV_USE_POLL
491	# include "ev_poll.c"	721	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	734	ev_version_minor (void)
505	{	735	{
506	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
507	}	737	}
508		738
509	/* return true if we are running with elevated privileges and ignore env variables */	739	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	740	static int
511	enable_secure ()	741	enable_secure (void)
512	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
513	return getuid () != geteuid ()	746	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
		748	#endif
515	}	749	}
516		750
517	int ev_init (int methods)	751	int
		752	ev_method (EV_P)
518	{	753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ int methods)
		759	{
519	if (!ev_method)	760	if (!method)
520	{	761	{
521	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
522	{	763	{
523	struct timespec ts;	764	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	766	have_monotonic = 1;
526	}	767	}
527	#endif	768	#endif
528		769
529	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
530	now = get_clock ();	771	mn_now = get_clock ();
531	now_floor = now;	772	now_floor = mn_now;
532	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		774
537	if (methods == EVMETHOD_AUTO)	775	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	776	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	777	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	778	else
541	methods = EVMETHOD_ANY;	779	methods = EVMETHOD_ANY;
542		780
543	ev_method = 0;	781	method = 0;
		782	#if EV_USE_KQUEUE
		783	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		784	#endif
544	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	786	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	787	#endif
547	#if EV_USE_POLL	788	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	789	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	790	#endif
550	#if EV_USE_SELECT	791	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	792	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	793	#endif
553		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
		797	}
		798	}
		799
		800	void
		801	loop_destroy (EV_P)
		802	{
		803	int i;
		804
		805	#if EV_USE_KQUEUE
		806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		807	#endif
		808	#if EV_USE_EPOLL
		809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		810	#endif
		811	#if EV_USE_POLL
		812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		813	#endif
		814	#if EV_USE_SELECT
		815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		816	#endif
		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
		831	method = 0;
		832	}
		833
		834	static void
		835	loop_fork (EV_P)
		836	{
		837	#if EV_USE_EPOLL
		838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		839	#endif
		840	#if EV_USE_KQUEUE
		841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
		860	}
		861
		862	#if EV_MULTIPLICITY
		863	struct ev_loop *
		864	ev_loop_new (int methods)
		865	{
		866	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
		870	loop_init (EV_A_ methods);
		871
		872	if (ev_method (EV_A))
		873	return loop;
		874
		875	return 0;
		876	}
		877
		878	void
		879	ev_loop_destroy (EV_P)
		880	{
		881	loop_destroy (EV_A);
		882	ev_free (loop);
		883	}
		884
		885	void
		886	ev_loop_fork (EV_P)
		887	{
		888	postfork = 1;
		889	}
		890
		891	#endif
		892
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *
		895	#else
		896	int
		897	#endif
		898	ev_default_loop (int methods)
		899	{
		900	if (sigpipe [0] == sigpipe [1])
		901	if (pipe (sigpipe))
		902	return 0;
		903
		904	if (!default_loop)
		905	{
		906	#if EV_MULTIPLICITY
		907	struct ev_loop *loop = default_loop = &default_loop_struct;
		908	#else
		909	default_loop = 1;
		910	#endif
		911
		912	loop_init (EV_A_ methods);
		913
554	if (ev_method)	914	if (ev_method (EV_A))
555	{	915	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	916	siginit (EV_A);
558		917
		918	#ifndef _WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	921	ev_signal_start (EV_A_ &childev);
		922	ev_unref (EV_A); /* child watcher should not keep loop alive */
		923	#endif
561	}	924	}
		925	else
		926	default_loop = 0;
562	}	927	}
563		928
564	return ev_method;	929	return default_loop;
		930	}
		931
		932	void
		933	ev_default_destroy (void)
		934	{
		935	#if EV_MULTIPLICITY
		936	struct ev_loop *loop = default_loop;
		937	#endif
		938
		939	#ifndef _WIN32
		940	ev_ref (EV_A); /* child watcher */
		941	ev_signal_stop (EV_A_ &childev);
		942	#endif
		943
		944	ev_ref (EV_A); /* signal watcher */
		945	ev_io_stop (EV_A_ &sigev);
		946
		947	close (sigpipe [0]); sigpipe [0] = 0;
		948	close (sigpipe [1]); sigpipe [1] = 0;
		949
		950	loop_destroy (EV_A);
		951	}
		952
		953	void
		954	ev_default_fork (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
		959
		960	if (method)
		961	postfork = 1;
565	}	962	}
566		963
567	/*****************************************************************************/	964	/*****************************************************************************/
568		965
569	void
570	ev_fork_prepare (void)
571	{
572	/* nop */
573	}
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif
588
589	ev_io_stop (&sigev);
590	close (sigpipe [0]);
591	close (sigpipe [1]);
592	pipe (sigpipe);
593	siginit ();
594	}
595
596	/*****************************************************************************/
597
598	static void	966	static int
		967	any_pending (EV_P)
		968	{
		969	int pri;
		970
		971	for (pri = NUMPRI; pri--; )
		972	if (pendingcnt [pri])
		973	return 1;
		974
		975	return 0;
		976	}
		977
		978	static void
599	call_pending (void)	979	call_pending (EV_P)
600	{	980	{
601	int pri;	981	int pri;
602		982
603	for (pri = NUMPRI; pri--; )	983	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	984	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		987
608	if (p->w)	988	if (p->w)
609	{	989	{
610	p->w->pending = 0;	990	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
612	}	992	}
613	}	993	}
614	}	994	}
615		995
616	static void	996	static void
617	timers_reify (void)	997	timers_reify (EV_P)
618	{	998	{
619	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	1000	{
621	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
		1002
		1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		1004
623	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
624	if (w->repeat)	1006	if (w->repeat)
625	{	1007	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
627	w->at = now + w->repeat;	1010	((WT)w)->at += w->repeat;
		1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
628	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
629	}	1015	}
630	else	1016	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		1018
633	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
634	}	1020	}
635	}	1021	}
636		1022
		1023	#if EV_PERIODICS
637	static void	1024	static void
638	periodics_reify (void)	1025	periodics_reify (EV_P)
639	{	1026	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
641	{	1028	{
642	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
643		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
644	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
645	if (w->interval)	1034	if (w->reschedule_cb)
646	{	1035	{
		1036	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
650	}	1046	}
651	else	1047	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1049
654	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
655	}	1051	}
656	}	1052	}
657		1053
658	static void	1054	static void
659	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
660	{	1056	{
661	int i;	1057	int i;
662		1058
663	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
665	{	1061	{
666	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
667		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
668	if (w->interval)	1066	else if (w->interval)
669	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
671
672	if (fabs (diff) >= 1e-4)
673	{
674	ev_periodic_stop (w);
675	ev_periodic_start (w);
676
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}
679	}
680	}	1068	}
681	}
682		1069
683	static int	1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
		1073	}
		1074	#endif
		1075
		1076	inline int
684	time_update_monotonic (void)	1077	time_update_monotonic (EV_P)
685	{	1078	{
686	now = get_clock ();	1079	mn_now = get_clock ();
687		1080
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	1082	{
690	ev_now = now + diff;	1083	ev_rt_now = rtmn_diff + mn_now;
691	return 0;	1084	return 0;
692	}	1085	}
693	else	1086	else
694	{	1087	{
695	now_floor = now;	1088	now_floor = mn_now;
696	ev_now = ev_time ();	1089	ev_rt_now = ev_time ();
697	return 1;	1090	return 1;
698	}	1091	}
699	}	1092	}
700		1093
701	static void	1094	static void
702	time_update (void)	1095	time_update (EV_P)
703	{	1096	{
704	int i;	1097	int i;
705		1098
706	#if EV_USE_MONOTONIC	1099	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	1100	if (expect_true (have_monotonic))
708	{	1101	{
709	if (time_update_monotonic ())	1102	if (time_update_monotonic (EV_A))
710	{	1103	{
711	ev_tstamp odiff = diff;	1104	ev_tstamp odiff = rtmn_diff;
712		1105
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	1107	{
715	diff = ev_now - now;	1108	rtmn_diff = ev_rt_now - mn_now;
716		1109
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1111	return; /* all is well */
719		1112
720	ev_now = ev_time ();	1113	ev_rt_now = ev_time ();
721	now = get_clock ();	1114	mn_now = get_clock ();
722	now_floor = now;	1115	now_floor = mn_now;
723	}	1116	}
724		1117
		1118	# if EV_PERIODICS
725	periodics_reschedule (diff - odiff);	1119	periodics_reschedule (EV_A);
		1120	# endif
726	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
		1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	1123	}
728	}	1124	}
729	else	1125	else
730	#endif	1126	#endif
731	{	1127	{
732	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
733		1129
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1131	{
		1132	#if EV_PERIODICS
736	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
737		1135
738	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
741	}	1139	}
742		1140
743	now = ev_now;	1141	mn_now = ev_rt_now;
744	}	1142	}
745	}	1143	}
746		1144
747	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
748		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
749	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
750	{	1161	{
751	double block;	1162	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		1164
754	do	1165	do
755	{	1166	{
756	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
758	{	1169	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1171	call_pending (EV_A);
761	}	1172	}
762		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
763	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
764	fd_reify ();	1179	fd_reify (EV_A);
765		1180
766	/* calculate blocking time */	1181	/* calculate blocking time */
767		1182
768	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
769	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1187	time_update_monotonic (EV_A);
773	else	1188	else
774	#endif	1189	#endif
775	{	1190	{
776	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
777	now = ev_now;	1192	mn_now = ev_rt_now;
778	}	1193	}
779		1194
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	1196	block = 0.;
782	else	1197	else
783	{	1198	{
784	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
785		1200
786	if (timercnt)	1201	if (timercnt)
787	{	1202	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1204	if (block > to) block = to;
790	}	1205	}
791		1206
		1207	#if EV_PERIODICS
792	if (periodiccnt)	1208	if (periodiccnt)
793	{	1209	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
795	if (block > to) block = to;	1211	if (block > to) block = to;
796	}	1212	}
		1213	#endif
797		1214
798	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
799	}	1216	}
800		1217
801	method_poll (block);	1218	method_poll (EV_A_ block);
802		1219
803	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
804	time_update ();	1221	time_update (EV_A);
805		1222
806	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
808	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
809		1228
810	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1232
814	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
815	if (checkcnt)	1234	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1236
818	call_pending ();	1237	call_pending (EV_A);
819	}	1238	}
820	while (!ev_loop_done);	1239	while (activecnt && !loop_done);
821		1240
822	if (ev_loop_done != 2)	1241	if (loop_done != 2)
823	ev_loop_done = 0;	1242	loop_done = 0;
		1243	}
		1244
		1245	void
		1246	ev_unloop (EV_P_ int how)
		1247	{
		1248	loop_done = how;
824	}	1249	}
825		1250
826	/*****************************************************************************/	1251	/*****************************************************************************/
827		1252
828	static void	1253	inline void
829	wlist_add (WL *head, WL elem)	1254	wlist_add (WL *head, WL elem)
830	{	1255	{
831	elem->next = *head;	1256	elem->next = *head;
832	*head = elem;	1257	*head = elem;
833	}	1258	}
834		1259
835	static void	1260	inline void
836	wlist_del (WL *head, WL elem)	1261	wlist_del (WL *head, WL elem)
837	{	1262	{
838	while (*head)	1263	while (*head)
839	{	1264	{
840	if (*head == elem)	1265	if (*head == elem)
…		…
845		1270
846	head = &(*head)->next;	1271	head = &(*head)->next;
847	}	1272	}
848	}	1273	}
849		1274
850	static void	1275	inline void
851	ev_clear_pending (W w)	1276	ev_clear_pending (EV_P_ W w)
852	{	1277	{
853	if (w->pending)	1278	if (w->pending)
854	{	1279	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1280	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1281	w->pending = 0;
857	}	1282	}
858	}	1283	}
859		1284
860	static void	1285	inline void
861	ev_start (W w, int active)	1286	ev_start (EV_P_ W w, int active)
862	{	1287	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1288	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1289	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1290
866	w->active = active;	1291	w->active = active;
		1292	ev_ref (EV_A);
867	}	1293	}
868		1294
869	static void	1295	inline void
870	ev_stop (W w)	1296	ev_stop (EV_P_ W w)
871	{	1297	{
		1298	ev_unref (EV_A);
872	w->active = 0;	1299	w->active = 0;
873	}	1300	}
874		1301
875	/*****************************************************************************/	1302	/*****************************************************************************/
876		1303
877	void	1304	void
878	ev_io_start (struct ev_io *w)	1305	ev_io_start (EV_P_ struct ev_io *w)
879	{	1306	{
880	int fd = w->fd;	1307	int fd = w->fd;
881		1308
882	if (ev_is_active (w))	1309	if (ev_is_active (w))
883	return;	1310	return;
884		1311
885	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
886		1313
887	ev_start ((W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1317
891	fd_change (fd);	1318	fd_change (EV_A_ fd);
892	}	1319	}
893		1320
894	void	1321	void
895	ev_io_stop (struct ev_io *w)	1322	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1323	{
897	ev_clear_pending ((W)w);	1324	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
899	return;	1326	return;
900		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
903		1332
904	fd_change (w->fd);	1333	fd_change (EV_A_ w->fd);
905	}	1334	}
906		1335
907	void	1336	void
908	ev_timer_start (struct ev_timer *w)	1337	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1338	{
910	if (ev_is_active (w))	1339	if (ev_is_active (w))
911	return;	1340	return;
912		1341
913	w->at += now;	1342	((WT)w)->at += mn_now;
914		1343
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1345
917	ev_start ((W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
919	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
921	}
922		1350
		1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1352	}
		1353
923	void	1354	void
924	ev_timer_stop (struct ev_timer *w)	1355	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1356	{
926	ev_clear_pending ((W)w);	1357	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1358	if (!ev_is_active (w))
928	return;	1359	return;
929		1360
		1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1362
930	if (w->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
931	{	1364	{
932	timers [w->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1367	}
935		1368
936	w->at = w->repeat;	1369	((WT)w)->at -= mn_now;
937		1370
938	ev_stop ((W)w);	1371	ev_stop (EV_A_ (W)w);
939	}	1372	}
940		1373
941	void	1374	void
942	ev_timer_again (struct ev_timer *w)	1375	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1376	{
944	if (ev_is_active (w))	1377	if (ev_is_active (w))
945	{	1378	{
946	if (w->repeat)	1379	if (w->repeat)
947	{	1380	{
948	w->at = now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1383	}
951	else	1384	else
952	ev_timer_stop (w);	1385	ev_timer_stop (EV_A_ w);
953	}	1386	}
954	else if (w->repeat)	1387	else if (w->repeat)
955	ev_timer_start (w);	1388	ev_timer_start (EV_A_ w);
956	}	1389	}
957		1390
		1391	#if EV_PERIODICS
958	void	1392	void
959	ev_periodic_start (struct ev_periodic *w)	1393	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1394	{
961	if (ev_is_active (w))	1395	if (ev_is_active (w))
962	return;	1396	return;
963		1397
		1398	if (w->reschedule_cb)
		1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1400	else if (w->interval)
		1401	{
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1402	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1403	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1404	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1405	}
969		1406
970	ev_start ((W)w, ++periodiccnt);	1407	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1408	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
972	periodics [periodiccnt - 1] = w;	1409	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1410	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1411
		1412	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1413	}
		1414
976	void	1415	void
977	ev_periodic_stop (struct ev_periodic *w)	1416	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1417	{
979	ev_clear_pending ((W)w);	1418	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1419	if (!ev_is_active (w))
981	return;	1420	return;
982		1421
		1422	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1423
983	if (w->active < periodiccnt--)	1424	if (((W)w)->active < periodiccnt--)
984	{	1425	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1426	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1427	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1428	}
988		1429
989	ev_stop ((W)w);	1430	ev_stop (EV_A_ (W)w);
990	}	1431	}
991		1432
992	void	1433	void
		1434	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1435	{
		1436	/* TODO: use adjustheap and recalculation */
		1437	ev_periodic_stop (EV_A_ w);
		1438	ev_periodic_start (EV_A_ w);
		1439	}
		1440	#endif
		1441
		1442	void
993	ev_signal_start (struct ev_signal *w)	1443	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1444	{
995	if (ev_is_active (w))	1445	if (ev_is_active (w))
996	return;	1446	return;
997		1447
		1448	ev_start (EV_A_ (W)w, ++idlecnt);
		1449	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1450	idles [idlecnt - 1] = w;
		1451	}
		1452
		1453	void
		1454	ev_idle_stop (EV_P_ struct ev_idle *w)
		1455	{
		1456	ev_clear_pending (EV_A_ (W)w);
		1457	if (!ev_is_active (w))
		1458	return;
		1459
		1460	idles [((W)w)->active - 1] = idles [--idlecnt];
		1461	ev_stop (EV_A_ (W)w);
		1462	}
		1463
		1464	void
		1465	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1466	{
		1467	if (ev_is_active (w))
		1468	return;
		1469
		1470	ev_start (EV_A_ (W)w, ++preparecnt);
		1471	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1472	prepares [preparecnt - 1] = w;
		1473	}
		1474
		1475	void
		1476	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1477	{
		1478	ev_clear_pending (EV_A_ (W)w);
		1479	if (!ev_is_active (w))
		1480	return;
		1481
		1482	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1483	ev_stop (EV_A_ (W)w);
		1484	}
		1485
		1486	void
		1487	ev_check_start (EV_P_ struct ev_check *w)
		1488	{
		1489	if (ev_is_active (w))
		1490	return;
		1491
		1492	ev_start (EV_A_ (W)w, ++checkcnt);
		1493	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1494	checks [checkcnt - 1] = w;
		1495	}
		1496
		1497	void
		1498	ev_check_stop (EV_P_ struct ev_check *w)
		1499	{
		1500	ev_clear_pending (EV_A_ (W)w);
		1501	if (!ev_is_active (w))
		1502	return;
		1503
		1504	checks [((W)w)->active - 1] = checks [--checkcnt];
		1505	ev_stop (EV_A_ (W)w);
		1506	}
		1507
		1508	#ifndef SA_RESTART
		1509	# define SA_RESTART 0
		1510	#endif
		1511
		1512	void
		1513	ev_signal_start (EV_P_ struct ev_signal *w)
		1514	{
		1515	#if EV_MULTIPLICITY
		1516	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1517	#endif
		1518	if (ev_is_active (w))
		1519	return;
		1520
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1521	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1522
1000	ev_start ((W)w, 1);	1523	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1524	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1525	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1526
1004	if (!w->next)	1527	if (!((WL)w)->next)
1005	{	1528	{
		1529	#if _WIN32
		1530	signal (w->signum, sighandler);
		1531	#else
1006	struct sigaction sa;	1532	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1533	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1534	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1535	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1536	sigaction (w->signum, &sa, 0);
		1537	#endif
1011	}	1538	}
1012	}	1539	}
1013		1540
1014	void	1541	void
1015	ev_signal_stop (struct ev_signal *w)	1542	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1543	{
1017	ev_clear_pending ((W)w);	1544	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1545	if (!ev_is_active (w))
1019	return;	1546	return;
1020		1547
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1548	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1549	ev_stop (EV_A_ (W)w);
1023		1550
1024	if (!signals [w->signum - 1].head)	1551	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1552	signal (w->signum, SIG_DFL);
1026	}	1553	}
1027		1554
1028	void	1555	void
1029	ev_idle_start (struct ev_idle *w)	1556	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1557	{
		1558	#if EV_MULTIPLICITY
		1559	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1560	#endif
1031	if (ev_is_active (w))	1561	if (ev_is_active (w))
1032	return;	1562	return;
1033		1563
1034	ev_start ((W)w, ++idlecnt);
1035	array_needsize (idles, idlemax, idlecnt, );
1036	idles [idlecnt - 1] = w;
1037	}
1038
1039	void
1040	ev_idle_stop (struct ev_idle *w)
1041	{
1042	ev_clear_pending ((W)w);
1043	if (ev_is_active (w))
1044	return;
1045
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)
1096	{
1097	if (ev_is_active (w))
1098	return;
1099
1100	ev_start ((W)w, 1);	1564	ev_start (EV_A_ (W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1565	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}	1566	}
1103		1567
1104	void	1568	void
1105	ev_child_stop (struct ev_child *w)	1569	ev_child_stop (EV_P_ struct ev_child *w)
1106	{	1570	{
1107	ev_clear_pending ((W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1108	if (ev_is_active (w))	1572	if (!ev_is_active (w))
1109	return;	1573	return;
1110		1574
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1575	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1576	ev_stop (EV_A_ (W)w);
1113	}	1577	}
1114		1578
1115	/*****************************************************************************/	1579	/*****************************************************************************/
1116		1580
1117	struct ev_once	1581	struct ev_once
…		…
1121	void (cb)(int revents, void arg);	1585	void (cb)(int revents, void arg);
1122	void *arg;	1586	void *arg;
1123	};	1587	};
1124		1588
1125	static void	1589	static void
1126	once_cb (struct ev_once *once, int revents)	1590	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1591	{
1128	void (cb)(int revents, void arg) = once->cb;	1592	void (cb)(int revents, void arg) = once->cb;
1129	void *arg = once->arg;	1593	void *arg = once->arg;
1130		1594
1131	ev_io_stop (&once->io);	1595	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1596	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1597	ev_free (once);
1134		1598
1135	cb (revents, arg);	1599	cb (revents, arg);
1136	}	1600	}
1137		1601
1138	static void	1602	static void
1139	once_cb_io (struct ev_io *w, int revents)	1603	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1604	{
1141	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1605	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1142	}	1606	}
1143		1607
1144	static void	1608	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1609	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1610	{
1147	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1611	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1148	}	1612	}
1149		1613
1150	void	1614	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1615	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1152	{	1616	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1617	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1154		1618
1155	if (!once)	1619	if (!once)
1156	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1620	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1157	else	1621	else
1158	{	1622	{
1159	once->cb = cb;	1623	once->cb = cb;
1160	once->arg = arg;	1624	once->arg = arg;
1161		1625
1162	ev_watcher_init (&once->io, once_cb_io);	1626	ev_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1627	if (fd >= 0)
1164	{	1628	{
1165	ev_io_set (&once->io, fd, events);	1629	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1630	ev_io_start (EV_A_ &once->io);
1167	}	1631	}
1168		1632
1169	ev_watcher_init (&once->to, once_cb_to);	1633	ev_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1634	if (timeout >= 0.)
1171	{	1635	{
1172	ev_timer_set (&once->to, timeout, 0.);	1636	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1637	ev_timer_start (EV_A_ &once->to);
1174	}	1638	}
1175	}	1639	}
1176	}	1640	}
1177		1641
1178	/*****************************************************************************/	1642	#ifdef __cplusplus
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}	1643	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif	1644	#endif
1234		1645
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}
1255
1256	#endif
1257
1258
1259
1260

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Comparing libev/ev.c (file contents): Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs. Revision 1.106 by root, Mon Nov 12 01:07:50 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.106 by root, Mon Nov 12 01:07:50 2007 UTC