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

Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 2007 UTC vs.
Revision 1.111 by root, Mon Nov 12 06:34:49 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>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# include <sys/wait.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
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
57	#endif	96	#endif
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
61	#endif	101	#endif
62		102
63	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
64	# 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
65	#endif	109	#endif
66		110
67	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
69	#endif	113	#endif
…		…
75	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
77	#endif	121	#endif
78		122
79	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
80		130
81	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
84	#endif	134	#endif
85		135
86	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
89	#endif	143	#endif
90		144
91	/**/	145	/**/
92		146
93	#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) */
94	#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) */
95	#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 */
96	/#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 */
97		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
98	#include "ev.h"	155	# include "ev.h"
		156	#endif
99		157
100	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	160	# define inline inline
103	#else	161	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
110		168
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		171
		172	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		173
114	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
117		177
118	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
119	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
120	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
121		271
122	static int have_monotonic; /* runtime */	272	static int default_loop;
123		273
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		275
128	/*****************************************************************************/	276	/*****************************************************************************/
129		277
130	ev_tstamp	278	ev_tstamp
131	ev_time (void)	279	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	289	#endif
142	}	290	}
143		291
144	static ev_tstamp	292	inline ev_tstamp
145	get_clock (void)	293	get_clock (void)
146	{	294	{
147	#if EV_USE_MONOTONIC	295	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	296	if (expect_true (have_monotonic))
149	{	297	{
…		…
154	#endif	302	#endif
155		303
156	return ev_time ();	304	return ev_time ();
157	}	305	}
158		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		316
161	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
163	{ \	319	{ \
164	int newcnt = cur; \	320	int newcnt = cur; \
165	do \	321	do \
166	{ \	322	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	324	} \
169	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
170	\	326	\
171	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	329	cur = newcnt; \
174	}	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;
175		342
176	/*****************************************************************************/	343	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		344
188	static void	345	static void
189	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
190	{	347	{
191	while (count--)	348	while (count--)
…		…
196		353
197	++base;	354	++base;
198	}	355	}
199	}	356	}
200		357
201	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
202	{	360	{
203	W w;	361	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		362
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)	363	if (w_->pending)
214	{	364	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	366	return;
217	}	367	}
218		368
219	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	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));
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	373	}
224		374
225	static void	375	static void
226	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	377	{
228	int i;	378	int i;
229		379
230	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
232	}	382	}
233		383
234	static void	384	inline void
235	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
236	{	386	{
237	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	388	struct ev_io *w;
239		389
240	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	391	{
242	int ev = w->events & events;	392	int ev = w->events & revents;
243		393
244	if (ev)	394	if (ev)
245	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
246	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
247	}	403	}
248		404
249	/*****************************************************************************/	405	/*****************************************************************************/
250		406
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	407	static void
255	fd_reify (void)	408	fd_reify (EV_P)
256	{	409	{
257	int i;	410	int i;
258		411
259	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
260	{	413	{
…		…
262	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	416	struct ev_io *w;
264		417
265	int events = 0;	418	int events = 0;
266		419
267	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	421	events \|= w->events;
269		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
270	anfd->reify = 0;	432	anfd->reify = 0;
271		433
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	435	anfd->events = events;
276	}
277	}	436	}
278		437
279	fdchangecnt = 0;	438	fdchangecnt = 0;
280	}	439	}
281		440
282	static void	441	static void
283	fd_change (int fd)	442	fd_change (EV_P_ int fd)
284	{	443	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
286	return;	445	return;
287		446
288	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
289		448
290	++fdchangecnt;	449	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
293	}	452	}
294		453
295	static void	454	static void
296	fd_kill (int fd)	455	fd_kill (EV_P_ int fd)
297	{	456	{
298	struct ev_io *w;	457	struct ev_io *w;
299		458
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
302	{	460	{
303	ev_io_stop (w);	461	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	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
306	}	474	}
307		475
308	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
309	static void	477	static void
310	fd_ebadf (void)	478	fd_ebadf (EV_P)
311	{	479	{
312	int fd;	480	int fd;
313		481
314	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	483	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	485	fd_kill (EV_A_ fd);
318	}	486	}
319		487
320	/* 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 */
321	static void	489	static void
322	fd_enomem (void)	490	fd_enomem (EV_P)
323	{	491	{
324	int fd = anfdmax;	492	int fd;
325		493
326	while (fd--)	494	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	495	if (anfds [fd].events)
328	{	496	{
329	close (fd);
330	fd_kill (fd);	497	fd_kill (EV_A_ fd);
331	return;	498	return;
332	}	499	}
333	}	500	}
334		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
335	/*****************************************************************************/	517	/*****************************************************************************/
336		518
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	519	static void
344	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
345	{	521	{
346	WT w = timers [k];	522	WT w = heap [k];
347		523
348	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
349	{	525	{
350	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
352	k >>= 1;	528	k >>= 1;
353	}	529	}
354		530
355	timers [k] = w;	531	heap [k] = w;
356	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
357		533
358	}	534	}
359		535
360	static void	536	static void
361	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
362	{	538	{
363	WT w = timers [k];	539	WT w = heap [k];
364		540
365	while (k < (N >> 1))	541	while (k < (N >> 1))
366	{	542	{
367	int j = k << 1;	543	int j = k << 1;
368		544
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	546	++j;
371		547
372	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
373	break;	549	break;
374		550
375	timers [k] = timers [j];	551	heap [k] = heap [j];
376	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
377	k = j;	553	k = j;
378	}	554	}
379		555
380	timers [k] = w;	556	heap [k] = w;
381	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);
382	}	565	}
383		566
384	/*****************************************************************************/	567	/*****************************************************************************/
385		568
386	typedef struct	569	typedef struct
387	{	570	{
388	struct ev_signal *head;	571	WL head;
389	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
390	} ANSIG;	573	} ANSIG;
391		574
392	static ANSIG *signals;	575	static ANSIG *signals;
393	static int signalmax;	576	static int signalmax;
…		…
409	}	592	}
410		593
411	static void	594	static void
412	sighandler (int signum)	595	sighandler (int signum)
413	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
414	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
415		602
416	if (!gotsig)	603	if (!gotsig)
417	{	604	{
		605	int old_errno = errno;
418	gotsig = 1;	606	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
420	}	609	}
421	}	610	}
422		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
423	static void	632	static void
424	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	634	{
426	struct ev_signal *w;
427	int signum;	635	int signum;
428		636
429	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	638	gotsig = 0;
431		639
432	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
434	{	642	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	643	}
441		644
442	static void	645	inline void
443	siginit (void)	646	fd_intern (int fd)
444	{	647	{
445	#ifndef WIN32	648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	654	#endif
		655	}
		656
		657	static void
		658	siginit (EV_P)
		659	{
		660	fd_intern (sigpipe [0]);
		661	fd_intern (sigpipe [1]);
453		662
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	666	}
457		667
458	/*****************************************************************************/	668	/*****************************************************************************/
459		669
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
472	static struct ev_signal childev;	674	static struct ev_signal childev;
473
474	#ifndef WIN32
475		675
476	#ifndef WCONTINUED	676	#ifndef WCONTINUED
477	# define WCONTINUED 0	677	# define WCONTINUED 0
478	#endif	678	#endif
479		679
480	static void	680	static void
481	child_reap (struct ev_signal *sw, int chain, int pid, int status)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	682	{
483	struct ev_child *w;	683	struct ev_child *w;
484		684
485	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
486	if (w->pid == pid \|\| !w->pid)	686	if (w->pid == pid \|\| !w->pid)
487	{	687	{
488	w->priority = sw->priority; /* need to do it now */	688	ev_priority (w) = ev_priority (sw); /* need to do it now */
489	w->rpid = pid;	689	w->rpid = pid;
490	w->rstatus = status;	690	w->rstatus = status;
491	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
492	event ((W)w, EV_CHILD);	691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
493	}	692	}
494	}	693	}
495		694
496	static void	695	static void
497	childcb (struct ev_signal *sw, int revents)	696	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	697	{
499	int pid, status;	698	int pid, status;
500		699
501	printf ("chld %x\n", revents);//D
502	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
503	{	701	{
504	/* make sure we are called again until all childs have been reaped */	702	/* make sure we are called again until all childs have been reaped */
505	event ((W)sw, EV_SIGNAL);	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
506		704
507	child_reap (sw, pid, pid, status);	705	child_reap (EV_A_ sw, pid, pid, status);
508	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
509	}	707	}
510	}	708	}
511		709
512	#endif	710	#endif
513		711
…		…
536	ev_version_minor (void)	734	ev_version_minor (void)
537	{	735	{
538	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
539	}	737	}
540		738
541	/* 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 */
542	static int	740	static int
543	enable_secure ()	741	enable_secure (void)
544	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
545	return getuid () != geteuid ()	746	return getuid () != geteuid ()
546	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
		748	#endif
547	}	749	}
548		750
549	int ev_init (int methods)	751	unsigned int
		752	ev_method (EV_P)
550	{	753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ unsigned int flags)
		759	{
551	if (!ev_method)	760	if (!method)
552	{	761	{
553	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
554	{	763	{
555	struct timespec ts;	764	struct timespec ts;
556	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
557	have_monotonic = 1;	766	have_monotonic = 1;
558	}	767	}
559	#endif	768	#endif
560		769
561	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
562	now = get_clock ();	771	mn_now = get_clock ();
563	now_floor = now;	772	now_floor = mn_now;
564	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
565		774
566	if (pipe (sigpipe))	775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
567	return 0;
568
569	if (methods == EVMETHOD_AUTO)
570	if (!enable_secure () && getenv ("LIBEV_METHODS"))
571	methods = atoi (getenv ("LIBEV_METHODS"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
572	else
573	methods = EVMETHOD_ANY;
574		777
		778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
		780
575	ev_method = 0;	781	method = 0;
576	#if EV_USE_KQUEUE	782	#if EV_USE_KQUEUE
577	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
578	#endif	784	#endif
579	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
580	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
581	#endif	787	#endif
582	#if EV_USE_POLL	788	#if EV_USE_POLL
583	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
584	#endif	790	#endif
585	#if EV_USE_SELECT	791	#if EV_USE_SELECT
586	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
587	#endif	793	#endif
588		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 (unsigned int flags)
		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_ flags);
		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 (unsigned int flags)
		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_ flags);
		913
589	if (ev_method)	914	if (ev_method (EV_A))
590	{	915	{
591	ev_watcher_init (&sigev, sigcb);
592	ev_set_priority (&sigev, EV_MAXPRI);
593	siginit ();	916	siginit (EV_A);
594		917
595	#ifndef WIN32	918	#ifndef _WIN32
596	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
597	ev_set_priority (&childev, EV_MAXPRI);	920	ev_set_priority (&childev, EV_MAXPRI);
598	ev_signal_start (&childev);	921	ev_signal_start (EV_A_ &childev);
		922	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	923	#endif
600	}	924	}
		925	else
		926	default_loop = 0;
601	}	927	}
602		928
603	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;
604	}	962	}
605		963
606	/*****************************************************************************/	964	/*****************************************************************************/
607		965
608	void
609	ev_fork_prepare (void)
610	{
611	/* nop */
612	}
613
614	void
615	ev_fork_parent (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_child (void)
622	{
623	#if EV_USE_EPOLL
624	if (ev_method == EVMETHOD_EPOLL)
625	epoll_postfork_child ();
626	#endif
627
628	ev_io_stop (&sigev);
629	close (sigpipe [0]);
630	close (sigpipe [1]);
631	pipe (sigpipe);
632	siginit ();
633	}
634
635	/*****************************************************************************/
636
637	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
638	call_pending (void)	979	call_pending (EV_P)
639	{	980	{
640	int pri;	981	int pri;
641		982
642	for (pri = NUMPRI; pri--; )	983	for (pri = NUMPRI; pri--; )
643	while (pendingcnt [pri])	984	while (pendingcnt [pri])
…		…
645	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
646		987
647	if (p->w)	988	if (p->w)
648	{	989	{
649	p->w->pending = 0;	990	p->w->pending = 0;
650	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
651	}	992	}
652	}	993	}
653	}	994	}
654		995
655	static void	996	static void
656	timers_reify (void)	997	timers_reify (EV_P)
657	{	998	{
658	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
659	{	1000	{
660	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)));
661		1004
662	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
663	if (w->repeat)	1006	if (w->repeat)
664	{	1007	{
665	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
666	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
667	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
668	}	1015	}
669	else	1016	else
670	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
671		1018
672	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
673	}	1020	}
674	}	1021	}
675		1022
		1023	#if EV_PERIODICS
676	static void	1024	static void
677	periodics_reify (void)	1025	periodics_reify (EV_P)
678	{	1026	{
679	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
680	{	1028	{
681	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
682		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
683	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
684	if (w->interval)	1034	if (w->reschedule_cb)
685	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
686	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
687	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
688	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
689	}	1045	}
690	else	1046	else
691	ev_periodic_stop (w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
692		1048
693	event ((W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
694	}	1050	}
695	}	1051	}
696		1052
697	static void	1053	static void
698	periodics_reschedule (ev_tstamp diff)	1054	periodics_reschedule (EV_P)
699	{	1055	{
700	int i;	1056	int i;
701		1057
702	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
703	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
704	{	1060	{
705	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
706		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
707	if (w->interval)	1065	else if (w->interval)
708	{
709	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
710
711	if (fabs (diff) >= 1e-4)
712	{
713	ev_periodic_stop (w);
714	ev_periodic_start (w);
715
716	i = 0; /* restart loop, inefficient, but time jumps should be rare */
717	}
718	}
719	}	1067	}
720	}
721		1068
722	static int	1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
		1072	}
		1073	#endif
		1074
		1075	inline int
723	time_update_monotonic (void)	1076	time_update_monotonic (EV_P)
724	{	1077	{
725	now = get_clock ();	1078	mn_now = get_clock ();
726		1079
727	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
728	{	1081	{
729	ev_now = now + diff;	1082	ev_rt_now = rtmn_diff + mn_now;
730	return 0;	1083	return 0;
731	}	1084	}
732	else	1085	else
733	{	1086	{
734	now_floor = now;	1087	now_floor = mn_now;
735	ev_now = ev_time ();	1088	ev_rt_now = ev_time ();
736	return 1;	1089	return 1;
737	}	1090	}
738	}	1091	}
739		1092
740	static void	1093	static void
741	time_update (void)	1094	time_update (EV_P)
742	{	1095	{
743	int i;	1096	int i;
744		1097
745	#if EV_USE_MONOTONIC	1098	#if EV_USE_MONOTONIC
746	if (expect_true (have_monotonic))	1099	if (expect_true (have_monotonic))
747	{	1100	{
748	if (time_update_monotonic ())	1101	if (time_update_monotonic (EV_A))
749	{	1102	{
750	ev_tstamp odiff = diff;	1103	ev_tstamp odiff = rtmn_diff;
751		1104
752	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
753	{	1106	{
754	diff = ev_now - now;	1107	rtmn_diff = ev_rt_now - mn_now;
755		1108
756	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
757	return; /* all is well */	1110	return; /* all is well */
758		1111
759	ev_now = ev_time ();	1112	ev_rt_now = ev_time ();
760	now = get_clock ();	1113	mn_now = get_clock ();
761	now_floor = now;	1114	now_floor = mn_now;
762	}	1115	}
763		1116
		1117	# if EV_PERIODICS
764	periodics_reschedule (diff - odiff);	1118	periodics_reschedule (EV_A);
		1119	# endif
765	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
		1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
766	}	1122	}
767	}	1123	}
768	else	1124	else
769	#endif	1125	#endif
770	{	1126	{
771	ev_now = ev_time ();	1127	ev_rt_now = ev_time ();
772		1128
773	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1129	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
774	{	1130	{
		1131	#if EV_PERIODICS
775	periodics_reschedule (ev_now - now);	1132	periodics_reschedule (EV_A);
		1133	#endif
776		1134
777	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
778	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
779	timers [i]->at += diff;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
780	}	1138	}
781		1139
782	now = ev_now;	1140	mn_now = ev_rt_now;
783	}	1141	}
784	}	1142	}
785		1143
786	int ev_loop_done;	1144	void
		1145	ev_ref (EV_P)
		1146	{
		1147	++activecnt;
		1148	}
787		1149
		1150	void
		1151	ev_unref (EV_P)
		1152	{
		1153	--activecnt;
		1154	}
		1155
		1156	static int loop_done;
		1157
		1158	void
788	void ev_loop (int flags)	1159	ev_loop (EV_P_ int flags)
789	{	1160	{
790	double block;	1161	double block;
791	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1162	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
792		1163
793	do	1164	do
794	{	1165	{
795	/* queue check watchers (and execute them) */	1166	/* queue check watchers (and execute them) */
796	if (expect_false (preparecnt))	1167	if (expect_false (preparecnt))
797	{	1168	{
798	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
799	call_pending ();	1170	call_pending (EV_A);
800	}	1171	}
801		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
802	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
803	fd_reify ();	1178	fd_reify (EV_A);
804		1179
805	/* calculate blocking time */	1180	/* calculate blocking time */
806		1181
807	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
808	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
809	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
810	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
811	time_update_monotonic ();	1186	time_update_monotonic (EV_A);
812	else	1187	else
813	#endif	1188	#endif
814	{	1189	{
815	ev_now = ev_time ();	1190	ev_rt_now = ev_time ();
816	now = ev_now;	1191	mn_now = ev_rt_now;
817	}	1192	}
818		1193
819	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
820	block = 0.;	1195	block = 0.;
821	else	1196	else
822	{	1197	{
823	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
824		1199
825	if (timercnt)	1200	if (timercnt)
826	{	1201	{
827	ev_tstamp to = timers [0]->at - now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
828	if (block > to) block = to;	1203	if (block > to) block = to;
829	}	1204	}
830		1205
		1206	#if EV_PERIODICS
831	if (periodiccnt)	1207	if (periodiccnt)
832	{	1208	{
833	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
834	if (block > to) block = to;	1210	if (block > to) block = to;
835	}	1211	}
		1212	#endif
836		1213
837	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
838	}	1215	}
839		1216
840	method_poll (block);	1217	method_poll (EV_A_ block);
841		1218
842	/* update ev_now, do magic */	1219	/* update ev_rt_now, do magic */
843	time_update ();	1220	time_update (EV_A);
844		1221
845	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
846	timers_reify (); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
847	periodics_reify (); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
848		1227
849	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
850	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
851	queue_events ((W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
852		1231
853	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
854	if (checkcnt)	1233	if (checkcnt)
855	queue_events ((W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
856		1235
857	call_pending ();	1236	call_pending (EV_A);
858	}	1237	}
859	while (!ev_loop_done);	1238	while (activecnt && !loop_done);
860		1239
861	if (ev_loop_done != 2)	1240	if (loop_done != 2)
862	ev_loop_done = 0;	1241	loop_done = 0;
		1242	}
		1243
		1244	void
		1245	ev_unloop (EV_P_ int how)
		1246	{
		1247	loop_done = how;
863	}	1248	}
864		1249
865	/*****************************************************************************/	1250	/*****************************************************************************/
866		1251
867	static void	1252	inline void
868	wlist_add (WL *head, WL elem)	1253	wlist_add (WL *head, WL elem)
869	{	1254	{
870	elem->next = *head;	1255	elem->next = *head;
871	*head = elem;	1256	*head = elem;
872	}	1257	}
873		1258
874	static void	1259	inline void
875	wlist_del (WL *head, WL elem)	1260	wlist_del (WL *head, WL elem)
876	{	1261	{
877	while (*head)	1262	while (*head)
878	{	1263	{
879	if (*head == elem)	1264	if (*head == elem)
…		…
884		1269
885	head = &(*head)->next;	1270	head = &(*head)->next;
886	}	1271	}
887	}	1272	}
888		1273
889	static void	1274	inline void
890	ev_clear_pending (W w)	1275	ev_clear_pending (EV_P_ W w)
891	{	1276	{
892	if (w->pending)	1277	if (w->pending)
893	{	1278	{
894	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;
895	w->pending = 0;	1280	w->pending = 0;
896	}	1281	}
897	}	1282	}
898		1283
899	static void	1284	inline void
900	ev_start (W w, int active)	1285	ev_start (EV_P_ W w, int active)
901	{	1286	{
902	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
903	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
904		1289
905	w->active = active;	1290	w->active = active;
		1291	ev_ref (EV_A);
906	}	1292	}
907		1293
908	static void	1294	inline void
909	ev_stop (W w)	1295	ev_stop (EV_P_ W w)
910	{	1296	{
		1297	ev_unref (EV_A);
911	w->active = 0;	1298	w->active = 0;
912	}	1299	}
913		1300
914	/*****************************************************************************/	1301	/*****************************************************************************/
915		1302
916	void	1303	void
917	ev_io_start (struct ev_io *w)	1304	ev_io_start (EV_P_ struct ev_io *w)
918	{	1305	{
919	int fd = w->fd;	1306	int fd = w->fd;
920		1307
921	if (ev_is_active (w))	1308	if (ev_is_active (w))
922	return;	1309	return;
923		1310
924	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
925		1312
926	ev_start ((W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
927	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
928	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
929		1316
930	fd_change (fd);	1317	fd_change (EV_A_ fd);
931	}	1318	}
932		1319
933	void	1320	void
934	ev_io_stop (struct ev_io *w)	1321	ev_io_stop (EV_P_ struct ev_io *w)
935	{	1322	{
936	ev_clear_pending ((W)w);	1323	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
938	return;	1325	return;
939		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
940	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
941	ev_stop ((W)w);	1330	ev_stop (EV_A_ (W)w);
942		1331
943	fd_change (w->fd);	1332	fd_change (EV_A_ w->fd);
944	}	1333	}
945		1334
946	void	1335	void
947	ev_timer_start (struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
948	{	1337	{
949	if (ev_is_active (w))	1338	if (ev_is_active (w))
950	return;	1339	return;
951		1340
952	w->at += now;	1341	((WT)w)->at += mn_now;
953		1342
954	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
955		1344
956	ev_start ((W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
957	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
958	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
959	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
960	}
961		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351	}
		1352
962	void	1353	void
963	ev_timer_stop (struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
964	{	1355	{
965	ev_clear_pending ((W)w);	1356	ev_clear_pending (EV_A_ (W)w);
966	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
967	return;	1358	return;
968		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
969	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
970	{	1363	{
971	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
972	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
973	}	1366	}
974		1367
975	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
976		1369
977	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
978	}	1371	}
979		1372
980	void	1373	void
981	ev_timer_again (struct ev_timer *w)	1374	ev_timer_again (EV_P_ struct ev_timer *w)
982	{	1375	{
983	if (ev_is_active (w))	1376	if (ev_is_active (w))
984	{	1377	{
985	if (w->repeat)	1378	if (w->repeat)
986	{	1379	{
987	w->at = now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
988	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
989	}	1382	}
990	else	1383	else
991	ev_timer_stop (w);	1384	ev_timer_stop (EV_A_ w);
992	}	1385	}
993	else if (w->repeat)	1386	else if (w->repeat)
994	ev_timer_start (w);	1387	ev_timer_start (EV_A_ w);
995	}	1388	}
996		1389
		1390	#if EV_PERIODICS
997	void	1391	void
998	ev_periodic_start (struct ev_periodic *w)	1392	ev_periodic_start (EV_P_ struct ev_periodic *w)
999	{	1393	{
1000	if (ev_is_active (w))	1394	if (ev_is_active (w))
1001	return;	1395	return;
1002		1396
		1397	if (w->reschedule_cb)
		1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1399	else if (w->interval)
		1400	{
1003	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1401	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1004
1005	/* this formula differs from the one in periodic_reify because we do not always round up */	1402	/* this formula differs from the one in periodic_reify because we do not always round up */
1006	if (w->interval)
1007	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1404	}
1008		1405
1009	ev_start ((W)w, ++periodiccnt);	1406	ev_start (EV_A_ (W)w, ++periodiccnt);
1010	array_needsize (periodics, periodicmax, periodiccnt, );	1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1011	periodics [periodiccnt - 1] = w;	1408	periodics [periodiccnt - 1] = w;
1012	upheap ((WT *)periodics, periodiccnt - 1);	1409	upheap ((WT *)periodics, periodiccnt - 1);
1013	}
1014		1410
		1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1412	}
		1413
1015	void	1414	void
1016	ev_periodic_stop (struct ev_periodic *w)	1415	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1017	{	1416	{
1018	ev_clear_pending ((W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1019	if (!ev_is_active (w))	1418	if (!ev_is_active (w))
1020	return;	1419	return;
1021		1420
		1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1422
1022	if (w->active < periodiccnt--)	1423	if (((W)w)->active < periodiccnt--)
1023	{	1424	{
1024	periodics [w->active - 1] = periodics [periodiccnt];	1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1025	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1026	}	1427	}
1027		1428
1028	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
		1430	}
		1431
		1432	void
		1433	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1434	{
		1435	/* TODO: use adjustheap and recalculation */
		1436	ev_periodic_stop (EV_A_ w);
		1437	ev_periodic_start (EV_A_ w);
		1438	}
		1439	#endif
		1440
		1441	void
		1442	ev_idle_start (EV_P_ struct ev_idle *w)
		1443	{
		1444	if (ev_is_active (w))
		1445	return;
		1446
		1447	ev_start (EV_A_ (W)w, ++idlecnt);
		1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1449	idles [idlecnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_idle_stop (EV_P_ struct ev_idle *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (!ev_is_active (w))
		1457	return;
		1458
		1459	idles [((W)w)->active - 1] = idles [--idlecnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	void
		1464	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1465	{
		1466	if (ev_is_active (w))
		1467	return;
		1468
		1469	ev_start (EV_A_ (W)w, ++preparecnt);
		1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1471	prepares [preparecnt - 1] = w;
		1472	}
		1473
		1474	void
		1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1476	{
		1477	ev_clear_pending (EV_A_ (W)w);
		1478	if (!ev_is_active (w))
		1479	return;
		1480
		1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1482	ev_stop (EV_A_ (W)w);
		1483	}
		1484
		1485	void
		1486	ev_check_start (EV_P_ struct ev_check *w)
		1487	{
		1488	if (ev_is_active (w))
		1489	return;
		1490
		1491	ev_start (EV_A_ (W)w, ++checkcnt);
		1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1493	checks [checkcnt - 1] = w;
		1494	}
		1495
		1496	void
		1497	ev_check_stop (EV_P_ struct ev_check *w)
		1498	{
		1499	ev_clear_pending (EV_A_ (W)w);
		1500	if (!ev_is_active (w))
		1501	return;
		1502
		1503	checks [((W)w)->active - 1] = checks [--checkcnt];
		1504	ev_stop (EV_A_ (W)w);
1029	}	1505	}
1030		1506
1031	#ifndef SA_RESTART	1507	#ifndef SA_RESTART
1032	# define SA_RESTART 0	1508	# define SA_RESTART 0
1033	#endif	1509	#endif
1034		1510
1035	void	1511	void
1036	ev_signal_start (struct ev_signal *w)	1512	ev_signal_start (EV_P_ struct ev_signal *w)
1037	{	1513	{
		1514	#if EV_MULTIPLICITY
		1515	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1516	#endif
1038	if (ev_is_active (w))	1517	if (ev_is_active (w))
1039	return;	1518	return;
1040		1519
1041	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1042		1521
1043	ev_start ((W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
1044	array_needsize (signals, signalmax, w->signum, signals_init);	1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1045	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1046		1525
1047	if (!w->next)	1526	if (!((WL)w)->next)
1048	{	1527	{
		1528	#if _WIN32
		1529	signal (w->signum, sighandler);
		1530	#else
1049	struct sigaction sa;	1531	struct sigaction sa;
1050	sa.sa_handler = sighandler;	1532	sa.sa_handler = sighandler;
1051	sigfillset (&sa.sa_mask);	1533	sigfillset (&sa.sa_mask);
1052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1053	sigaction (w->signum, &sa, 0);	1535	sigaction (w->signum, &sa, 0);
		1536	#endif
1054	}	1537	}
1055	}	1538	}
1056		1539
1057	void	1540	void
1058	ev_signal_stop (struct ev_signal *w)	1541	ev_signal_stop (EV_P_ struct ev_signal *w)
1059	{	1542	{
1060	ev_clear_pending ((W)w);	1543	ev_clear_pending (EV_A_ (W)w);
1061	if (!ev_is_active (w))	1544	if (!ev_is_active (w))
1062	return;	1545	return;
1063		1546
1064	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1547	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1065	ev_stop ((W)w);	1548	ev_stop (EV_A_ (W)w);
1066		1549
1067	if (!signals [w->signum - 1].head)	1550	if (!signals [w->signum - 1].head)
1068	signal (w->signum, SIG_DFL);	1551	signal (w->signum, SIG_DFL);
1069	}	1552	}
1070		1553
1071	void	1554	void
1072	ev_idle_start (struct ev_idle *w)	1555	ev_child_start (EV_P_ struct ev_child *w)
1073	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1559	#endif
1074	if (ev_is_active (w))	1560	if (ev_is_active (w))
1075	return;	1561	return;
1076		1562
1077	ev_start ((W)w, ++idlecnt);
1078	array_needsize (idles, idlemax, idlecnt, );
1079	idles [idlecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_idle_stop (struct ev_idle *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	idles [w->active - 1] = idles [--idlecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_prepare_start (struct ev_prepare *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++preparecnt);
1100	array_needsize (prepares, preparemax, preparecnt, );
1101	prepares [preparecnt - 1] = w;
1102	}
1103
1104	void
1105	ev_prepare_stop (struct ev_prepare *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	prepares [w->active - 1] = prepares [--preparecnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_check_start (struct ev_check *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, ++checkcnt);
1122	array_needsize (checks, checkmax, checkcnt, );
1123	checks [checkcnt - 1] = w;
1124	}
1125
1126	void
1127	ev_check_stop (struct ev_check *w)
1128	{
1129	ev_clear_pending ((W)w);
1130	if (ev_is_active (w))
1131	return;
1132
1133	checks [w->active - 1] = checks [--checkcnt];
1134	ev_stop ((W)w);
1135	}
1136
1137	void
1138	ev_child_start (struct ev_child *w)
1139	{
1140	if (ev_is_active (w))
1141	return;
1142
1143	ev_start ((W)w, 1);	1563	ev_start (EV_A_ (W)w, 1);
1144	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1564	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1145	}	1565	}
1146		1566
1147	void	1567	void
1148	ev_child_stop (struct ev_child *w)	1568	ev_child_stop (EV_P_ struct ev_child *w)
1149	{	1569	{
1150	ev_clear_pending ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
1151	if (ev_is_active (w))	1571	if (!ev_is_active (w))
1152	return;	1572	return;
1153		1573
1154	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1155	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
1156	}	1576	}
1157		1577
1158	/*****************************************************************************/	1578	/*****************************************************************************/
1159		1579
1160	struct ev_once	1580	struct ev_once
…		…
1164	void (cb)(int revents, void arg);	1584	void (cb)(int revents, void arg);
1165	void *arg;	1585	void *arg;
1166	};	1586	};
1167		1587
1168	static void	1588	static void
1169	once_cb (struct ev_once *once, int revents)	1589	once_cb (EV_P_ struct ev_once *once, int revents)
1170	{	1590	{
1171	void (cb)(int revents, void arg) = once->cb;	1591	void (cb)(int revents, void arg) = once->cb;
1172	void *arg = once->arg;	1592	void *arg = once->arg;
1173		1593
1174	ev_io_stop (&once->io);	1594	ev_io_stop (EV_A_ &once->io);
1175	ev_timer_stop (&once->to);	1595	ev_timer_stop (EV_A_ &once->to);
1176	free (once);	1596	ev_free (once);
1177		1597
1178	cb (revents, arg);	1598	cb (revents, arg);
1179	}	1599	}
1180		1600
1181	static void	1601	static void
1182	once_cb_io (struct ev_io *w, int revents)	1602	once_cb_io (EV_P_ struct ev_io *w, int revents)
1183	{	1603	{
1184	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1604	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1185	}	1605	}
1186		1606
1187	static void	1607	static void
1188	once_cb_to (struct ev_timer *w, int revents)	1608	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1189	{	1609	{
1190	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1610	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1191	}	1611	}
1192		1612
1193	void	1613	void
1194	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1195	{	1615	{
1196	struct ev_once *once = malloc (sizeof (struct ev_once));	1616	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1197		1617
1198	if (!once)	1618	if (!once)
1199	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1619	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1200	else	1620	else
1201	{	1621	{
1202	once->cb = cb;	1622	once->cb = cb;
1203	once->arg = arg;	1623	once->arg = arg;
1204		1624
1205	ev_watcher_init (&once->io, once_cb_io);	1625	ev_init (&once->io, once_cb_io);
1206	if (fd >= 0)	1626	if (fd >= 0)
1207	{	1627	{
1208	ev_io_set (&once->io, fd, events);	1628	ev_io_set (&once->io, fd, events);
1209	ev_io_start (&once->io);	1629	ev_io_start (EV_A_ &once->io);
1210	}	1630	}
1211		1631
1212	ev_watcher_init (&once->to, once_cb_to);	1632	ev_init (&once->to, once_cb_to);
1213	if (timeout >= 0.)	1633	if (timeout >= 0.)
1214	{	1634	{
1215	ev_timer_set (&once->to, timeout, 0.);	1635	ev_timer_set (&once->to, timeout, 0.);
1216	ev_timer_start (&once->to);	1636	ev_timer_start (EV_A_ &once->to);
1217	}	1637	}
1218	}	1638	}
1219	}	1639	}
1220		1640
1221	/*****************************************************************************/	1641	#ifdef __cplusplus
1222
1223	#if 0
1224
1225	struct ev_io wio;
1226
1227	static void
1228	sin_cb (struct ev_io *w, int revents)
1229	{
1230	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1231	}	1642	}
1232
1233	static void
1234	ocb (struct ev_timer *w, int revents)
1235	{
1236	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1237	ev_timer_stop (w);
1238	ev_timer_start (w);
1239	}
1240
1241	static void
1242	scb (struct ev_signal *w, int revents)
1243	{
1244	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1245	ev_io_stop (&wio);
1246	ev_io_start (&wio);
1247	}
1248
1249	static void
1250	gcb (struct ev_signal *w, int revents)
1251	{
1252	fprintf (stderr, "generic %x\n", revents);
1253
1254	}
1255
1256	int main (void)
1257	{
1258	ev_init (0);
1259
1260	ev_io_init (&wio, sin_cb, 0, EV_READ);
1261	ev_io_start (&wio);
1262
1263	struct ev_timer t[10000];
1264
1265	#if 0
1266	int i;
1267	for (i = 0; i < 10000; ++i)
1268	{
1269	struct ev_timer *w = t + i;
1270	ev_watcher_init (w, ocb, i);
1271	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1272	ev_timer_start (w);
1273	if (drand48 () < 0.5)
1274	ev_timer_stop (w);
1275	}
1276	#endif	1643	#endif
1277		1644
1278	struct ev_timer t1;
1279	ev_timer_init (&t1, ocb, 5, 10);
1280	ev_timer_start (&t1);
1281
1282	struct ev_signal sig;
1283	ev_signal_init (&sig, scb, SIGQUIT);
1284	ev_signal_start (&sig);
1285
1286	struct ev_check cw;
1287	ev_check_init (&cw, gcb);
1288	ev_check_start (&cw);
1289
1290	struct ev_idle iw;
1291	ev_idle_init (&iw, gcb);
1292	ev_idle_start (&iw);
1293
1294	ev_loop (0);
1295
1296	return 0;
1297	}
1298
1299	#endif
1300
1301
1302
1303

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Comparing libev/ev.c (file contents): Revision 1.47 by root, Sat Nov 3 11:44:44 2007 UTC vs. Revision 1.111 by root, Mon Nov 12 06:34:49 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 2007 UTC vs.
Revision 1.111 by root, Mon Nov 12 06:34:49 2007 UTC