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

Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.131 by root, Fri Nov 23 05:43:45 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	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
80		158
81	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
89	#endif	167	#endif
90		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
91	/**/	173	/**/
92		174
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#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) */	176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	177	#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 */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
98	#include "ev.h"	183	# include "ev.h"
		184	#endif
99		185
100	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	188	# define inline static inline
103	#else	189	#else
104	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
105	# define inline static	191	# define inline static
106	#endif	192	#endif
107		193
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
110		196
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
114	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
117		206
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
		213	/*****************************************************************************/
		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
		263	typedef struct
		264	{
		265	WL head;
		266	unsigned char events;
		267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
		271	} ANFD;
		272
		273	typedef struct
		274	{
		275	W w;
		276	int events;
		277	} ANPENDING;
		278
		279	#if EV_MULTIPLICITY
		280
		281	struct ev_loop
		282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
		285	#define VAR(name,decl) decl;
		286	#include "ev_vars.h"
		287	#undef VAR
		288	};
		289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
		293
		294	#else
		295
119	ev_tstamp ev_now;	296	ev_tstamp ev_rt_now;
120	int ev_method;	297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
121		300
122	static int have_monotonic; /* runtime */	301	static int ev_default_loop_ptr;
123		302
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	303	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		304
128	/*****************************************************************************/	305	/*****************************************************************************/
129		306
130	ev_tstamp	307	ev_tstamp
131	ev_time (void)	308	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	316	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	317	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	318	#endif
142	}	319	}
143		320
144	static ev_tstamp	321	inline ev_tstamp
145	get_clock (void)	322	get_clock (void)
146	{	323	{
147	#if EV_USE_MONOTONIC	324	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	325	if (expect_true (have_monotonic))
149	{	326	{
…		…
154	#endif	331	#endif
155		332
156	return ev_time ();	333	return ev_time ();
157	}	334	}
158		335
		336	#if EV_MULTIPLICITY
		337	ev_tstamp
		338	ev_now (EV_P)
		339	{
		340	return ev_rt_now;
		341	}
		342	#endif
		343
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		345
161	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
163	{ \	348	{ \
164	int newcnt = cur; \	349	int newcnt = cur; \
165	do \	350	do \
166	{ \	351	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	353	} \
169	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
170	\	355	\
171	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	358	cur = newcnt; \
174	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		371
176	/*****************************************************************************/	372	/*****************************************************************************/
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		373
188	static void	374	static void
189	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
190	{	376	{
191	while (count--)	377	while (count--)
…		…
196		382
197	++base;	383	++base;
198	}	384	}
199	}	385	}
200		386
201	typedef struct	387	void
		388	ev_feed_event (EV_P_ void *w, int revents)
202	{	389	{
203	W w;	390	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		391
207	static ANPENDING *pendings [NUMPRI];	392	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	393	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	395	return;
217	}	396	}
218		397
219	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	402	}
224		403
225	static void	404	static void
226	queue_events (W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	406	{
228	int i;	407	int i;
229		408
230	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
232	}	411	}
233		412
234	static void	413	inline void
235	fd_event (int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
236	{	415	{
237	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	417	struct ev_io *w;
239		418
240	for (w = anfd->head; w; w = w->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	420	{
242	int ev = w->events & events;	421	int ev = w->events & revents;
243		422
244	if (ev)	423	if (ev)
245	event ((W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
246	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
247	}	432	}
248		433
249	/*****************************************************************************/	434	/*****************************************************************************/
250		435
251	static int *fdchanges;	436	inline void
252	static int fdchangemax, fdchangecnt;	437	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	438	{
257	int i;	439	int i;
258		440
259	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
260	{	442	{
…		…
262	ANFD *anfd = anfds + fd;	444	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	445	struct ev_io *w;
264		446
265	int events = 0;	447	int events = 0;
266		448
267	for (w = anfd->head; w; w = w->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	450	events \|= w->events;
269		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
270	anfd->reify = 0;	461	anfd->reify = 0;
271		462
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	464	anfd->events = events;
276	}
277	}	465	}
278		466
279	fdchangecnt = 0;	467	fdchangecnt = 0;
280	}	468	}
281		469
282	static void	470	static void
283	fd_change (int fd)	471	fd_change (EV_P_ int fd)
284	{	472	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
286	return;	474	return;
287		475
288	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
289		477
290	++fdchangecnt;	478	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
293	}	481	}
294		482
295	static void	483	static void
296	fd_kill (int fd)	484	fd_kill (EV_P_ int fd)
297	{	485	{
298	struct ev_io *w;	486	struct ev_io *w;
299		487
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
302	{	489	{
303	ev_io_stop (w);	490	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
306	}	503	}
307		504
308	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
309	static void	506	static void
310	fd_ebadf (void)	507	fd_ebadf (EV_P)
311	{	508	{
312	int fd;	509	int fd;
313		510
314	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	512	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	514	fd_kill (EV_A_ fd);
318	}	515	}
319		516
320	/* called on ENOMEM in select/poll to kill some fds and retry */	517	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	518	static void
322	fd_enomem (void)	519	fd_enomem (EV_P)
323	{	520	{
324	int fd = anfdmax;	521	int fd;
325		522
326	while (fd--)	523	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	524	if (anfds [fd].events)
328	{	525	{
329	close (fd);
330	fd_kill (fd);	526	fd_kill (EV_A_ fd);
331	return;	527	return;
332	}	528	}
333	}	529	}
334		530
		531	/* usually called after fork if backend needs to re-arm all fds from scratch */
		532	static void
		533	fd_rearm_all (EV_P)
		534	{
		535	int fd;
		536
		537	/* this should be highly optimised to not do anything but set a flag */
		538	for (fd = 0; fd < anfdmax; ++fd)
		539	if (anfds [fd].events)
		540	{
		541	anfds [fd].events = 0;
		542	fd_change (EV_A_ fd);
		543	}
		544	}
		545
335	/*****************************************************************************/	546	/*****************************************************************************/
336		547
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	548	static void
344	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
345	{	550	{
346	WT w = timers [k];	551	WT w = heap [k];
347		552
348	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
349	{	554	{
350	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
352	k >>= 1;	557	k >>= 1;
353	}	558	}
354		559
355	timers [k] = w;	560	heap [k] = w;
356	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
357		562
358	}	563	}
359		564
360	static void	565	static void
361	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
362	{	567	{
363	WT w = timers [k];	568	WT w = heap [k];
364		569
365	while (k < (N >> 1))	570	while (k < (N >> 1))
366	{	571	{
367	int j = k << 1;	572	int j = k << 1;
368		573
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	575	++j;
371		576
372	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
373	break;	578	break;
374		579
375	timers [k] = timers [j];	580	heap [k] = heap [j];
376	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
377	k = j;	582	k = j;
378	}	583	}
379		584
380	timers [k] = w;	585	heap [k] = w;
381	timers [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
382	}	594	}
383		595
384	/*****************************************************************************/	596	/*****************************************************************************/
385		597
386	typedef struct	598	typedef struct
387	{	599	{
388	struct ev_signal *head;	600	WL head;
389	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
390	} ANSIG;	602	} ANSIG;
391		603
392	static ANSIG *signals;	604	static ANSIG *signals;
393	static int signalmax;	605	static int signalmax;
…		…
409	}	621	}
410		622
411	static void	623	static void
412	sighandler (int signum)	624	sighandler (int signum)
413	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
414	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
415		631
416	if (!gotsig)	632	if (!gotsig)
417	{	633	{
418	int old_errno = errno;	634	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	637	errno = old_errno;
422	}	638	}
423	}	639	}
424		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
425	static void	661	static void
426	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	663	{
428	struct ev_signal *w;
429	int signum;	664	int signum;
430		665
431	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	667	gotsig = 0;
433		668
434	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
436	{	671	ev_feed_signal_event (EV_A_ signum + 1);
437	signals [signum].gotsig = 0;
438
439	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);
441	}
442	}	672	}
443		673
444	static void	674	static void
445	siginit (void)	675	fd_intern (int fd)
446	{	676	{
447	#ifndef WIN32	677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	fcntl (fd, F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450
451	/* rather than sort out wether we really need nb, set it */
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	683	#endif
		684	}
		685
		686	static void
		687	siginit (EV_P)
		688	{
		689	fd_intern (sigpipe [0]);
		690	fd_intern (sigpipe [1]);
455		691
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	695	}
459		696
460	/*****************************************************************************/	697	/*****************************************************************************/
461		698
462	static struct ev_idle **idles;
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472
473	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
474	static struct ev_signal childev;	703	static struct ev_signal childev;
475
476	#ifndef WIN32
477		704
478	#ifndef WCONTINUED	705	#ifndef WCONTINUED
479	# define WCONTINUED 0	706	# define WCONTINUED 0
480	#endif	707	#endif
481		708
482	static void	709	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	711	{
485	struct ev_child *w;	712	struct ev_child *w;
486		713
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
488	if (w->pid == pid \|\| !w->pid)	715	if (w->pid == pid \|\| !w->pid)
489	{	716	{
490	w->priority = sw->priority; /* need to do it now */	717	ev_priority (w) = ev_priority (sw); /* need to do it now */
491	w->rpid = pid;	718	w->rpid = pid;
492	w->rstatus = status;	719	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
495	}	721	}
496	}	722	}
497		723
498	static void	724	static void
499	childcb (struct ev_signal *sw, int revents)	725	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	726	{
501	int pid, status;	727	int pid, status;
502		728
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
505	{	730	{
506	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		733
509	child_reap (sw, pid, pid, status);	734	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	736	}
512	}	737	}
513		738
514	#endif	739	#endif
515		740
516	/*****************************************************************************/	741	/*****************************************************************************/
517		742
		743	#if EV_USE_PORT
		744	# include "ev_port.c"
		745	#endif
518	#if EV_USE_KQUEUE	746	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	747	# include "ev_kqueue.c"
520	#endif	748	#endif
521	#if EV_USE_EPOLL	749	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	750	# include "ev_epoll.c"
…		…
540	return EV_VERSION_MINOR;	768	return EV_VERSION_MINOR;
541	}	769	}
542		770
543	/* return true if we are running with elevated privileges and should ignore env variables */	771	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	772	static int
545	enable_secure ()	773	enable_secure (void)
546	{	774	{
547	#ifdef WIN32	775	#ifdef _WIN32
548	return 0;	776	return 0;
549	#else	777	#else
550	return getuid () != geteuid ()	778	return getuid () != geteuid ()
551	\|\| getgid () != getegid ();	779	\|\| getgid () != getegid ();
552	#endif	780	#endif
553	}	781	}
554		782
555	int ev_init (int methods)	783	unsigned int
		784	ev_supported_backends (void)
556	{	785	{
557	if (!ev_method)	786	unsigned int flags = 0;
		787
		788	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		789	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		790	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		791	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		792	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		793
		794	return flags;
		795	}
		796
		797	unsigned int
		798	ev_recommended_backends (void)
		799	{
		800	unsigned int flags = ev_supported_backends ();
		801
		802	#ifndef __NetBSD__
		803	/* kqueue is borked on everything but netbsd apparently */
		804	/* it usually doesn't work correctly on anything but sockets and pipes */
		805	flags &= ~EVBACKEND_KQUEUE;
		806	#endif
		807	#ifdef __APPLE__
		808	// flags &= ~EVBACKEND_KQUEUE; for documentation
		809	flags &= ~EVBACKEND_POLL;
		810	#endif
		811
		812	return flags;
		813	}
		814
		815	unsigned int
		816	ev_backend (EV_P)
		817	{
		818	return backend;
		819	}
		820
		821	static void
		822	loop_init (EV_P_ unsigned int flags)
		823	{
		824	if (!backend)
558	{	825	{
559	#if EV_USE_MONOTONIC	826	#if EV_USE_MONOTONIC
560	{	827	{
561	struct timespec ts;	828	struct timespec ts;
562	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	829	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
563	have_monotonic = 1;	830	have_monotonic = 1;
564	}	831	}
565	#endif	832	#endif
566		833
567	ev_now = ev_time ();	834	ev_rt_now = ev_time ();
568	now = get_clock ();	835	mn_now = get_clock ();
569	now_floor = now;	836	now_floor = mn_now;
570	diff = ev_now - now;	837	rtmn_diff = ev_rt_now - mn_now;
571		838
572	if (pipe (sigpipe))	839	if (!(flags & EVFLAG_NOENV)
573	return 0;	840	&& !enable_secure ()
574		841	&& getenv ("LIBEV_FLAGS"))
575	if (methods == EVMETHOD_AUTO)
576	if (!enable_secure () && getenv ("LIBEV_METHODS"))
577	methods = atoi (getenv ("LIBEV_METHODS"));	842	flags = atoi (getenv ("LIBEV_FLAGS"));
578	else
579	methods = EVMETHOD_ANY;
580		843
581	ev_method = 0;	844	if (!(flags & 0x0000ffffUL))
		845	flags \|= ev_recommended_backends ();
		846
		847	backend = 0;
		848	#if EV_USE_PORT
		849	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		850	#endif
582	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
583	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	852	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
584	#endif	853	#endif
585	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
586	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	855	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
587	#endif	856	#endif
588	#if EV_USE_POLL	857	#if EV_USE_POLL
589	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	858	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
590	#endif	859	#endif
591	#if EV_USE_SELECT	860	#if EV_USE_SELECT
592	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	861	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
593	#endif	862	#endif
594		863
595	if (ev_method)	864	ev_init (&sigev, sigcb);
		865	ev_set_priority (&sigev, EV_MAXPRI);
		866	}
		867	}
		868
		869	static void
		870	loop_destroy (EV_P)
		871	{
		872	int i;
		873
		874	#if EV_USE_PORT
		875	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		876	#endif
		877	#if EV_USE_KQUEUE
		878	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		879	#endif
		880	#if EV_USE_EPOLL
		881	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		882	#endif
		883	#if EV_USE_POLL
		884	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		885	#endif
		886	#if EV_USE_SELECT
		887	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		888	#endif
		889
		890	for (i = NUMPRI; i--; )
		891	array_free (pending, [i]);
		892
		893	/* have to use the microsoft-never-gets-it-right macro */
		894	array_free (fdchange, EMPTY0);
		895	array_free (timer, EMPTY0);
		896	#if EV_PERIODICS
		897	array_free (periodic, EMPTY0);
		898	#endif
		899	array_free (idle, EMPTY0);
		900	array_free (prepare, EMPTY0);
		901	array_free (check, EMPTY0);
		902
		903	backend = 0;
		904	}
		905
		906	static void
		907	loop_fork (EV_P)
		908	{
		909	#if EV_USE_PORT
		910	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		911	#endif
		912	#if EV_USE_KQUEUE
		913	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		914	#endif
		915	#if EV_USE_EPOLL
		916	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		917	#endif
		918
		919	if (ev_is_active (&sigev))
		920	{
		921	/* default loop */
		922
		923	ev_ref (EV_A);
		924	ev_io_stop (EV_A_ &sigev);
		925	close (sigpipe [0]);
		926	close (sigpipe [1]);
		927
		928	while (pipe (sigpipe))
		929	syserr ("(libev) error creating pipe");
		930
		931	siginit (EV_A);
		932	}
		933
		934	postfork = 0;
		935	}
		936
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *
		939	ev_loop_new (unsigned int flags)
		940	{
		941	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		942
		943	memset (loop, 0, sizeof (struct ev_loop));
		944
		945	loop_init (EV_A_ flags);
		946
		947	if (ev_backend (EV_A))
		948	return loop;
		949
		950	return 0;
		951	}
		952
		953	void
		954	ev_loop_destroy (EV_P)
		955	{
		956	loop_destroy (EV_A);
		957	ev_free (loop);
		958	}
		959
		960	void
		961	ev_loop_fork (EV_P)
		962	{
		963	postfork = 1;
		964	}
		965
		966	#endif
		967
		968	#if EV_MULTIPLICITY
		969	struct ev_loop *
		970	ev_default_loop_init (unsigned int flags)
		971	#else
		972	int
		973	ev_default_loop (unsigned int flags)
		974	#endif
		975	{
		976	if (sigpipe [0] == sigpipe [1])
		977	if (pipe (sigpipe))
		978	return 0;
		979
		980	if (!ev_default_loop_ptr)
		981	{
		982	#if EV_MULTIPLICITY
		983	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		984	#else
		985	ev_default_loop_ptr = 1;
		986	#endif
		987
		988	loop_init (EV_A_ flags);
		989
		990	if (ev_backend (EV_A))
596	{	991	{
597	ev_watcher_init (&sigev, sigcb);
598	ev_set_priority (&sigev, EV_MAXPRI);
599	siginit ();	992	siginit (EV_A);
600		993
601	#ifndef WIN32	994	#ifndef _WIN32
602	ev_signal_init (&childev, childcb, SIGCHLD);	995	ev_signal_init (&childev, childcb, SIGCHLD);
603	ev_set_priority (&childev, EV_MAXPRI);	996	ev_set_priority (&childev, EV_MAXPRI);
604	ev_signal_start (&childev);	997	ev_signal_start (EV_A_ &childev);
		998	ev_unref (EV_A); /* child watcher should not keep loop alive */
605	#endif	999	#endif
606	}	1000	}
		1001	else
		1002	ev_default_loop_ptr = 0;
607	}	1003	}
608		1004
609	return ev_method;	1005	return ev_default_loop_ptr;
		1006	}
		1007
		1008	void
		1009	ev_default_destroy (void)
		1010	{
		1011	#if EV_MULTIPLICITY
		1012	struct ev_loop *loop = ev_default_loop_ptr;
		1013	#endif
		1014
		1015	#ifndef _WIN32
		1016	ev_ref (EV_A); /* child watcher */
		1017	ev_signal_stop (EV_A_ &childev);
		1018	#endif
		1019
		1020	ev_ref (EV_A); /* signal watcher */
		1021	ev_io_stop (EV_A_ &sigev);
		1022
		1023	close (sigpipe [0]); sigpipe [0] = 0;
		1024	close (sigpipe [1]); sigpipe [1] = 0;
		1025
		1026	loop_destroy (EV_A);
		1027	}
		1028
		1029	void
		1030	ev_default_fork (void)
		1031	{
		1032	#if EV_MULTIPLICITY
		1033	struct ev_loop *loop = ev_default_loop_ptr;
		1034	#endif
		1035
		1036	if (backend)
		1037	postfork = 1;
610	}	1038	}
611		1039
612	/*****************************************************************************/	1040	/*****************************************************************************/
613		1041
614	void
615	ev_fork_prepare (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_parent (void)
622	{
623	/* nop */
624	}
625
626	void
627	ev_fork_child (void)
628	{
629	#if EV_USE_EPOLL
630	if (ev_method == EVMETHOD_EPOLL)
631	epoll_postfork_child ();
632	#endif
633
634	ev_io_stop (&sigev);
635	close (sigpipe [0]);
636	close (sigpipe [1]);
637	pipe (sigpipe);
638	siginit ();
639	}
640
641	/*****************************************************************************/
642
643	static void	1042	static int
		1043	any_pending (EV_P)
		1044	{
		1045	int pri;
		1046
		1047	for (pri = NUMPRI; pri--; )
		1048	if (pendingcnt [pri])
		1049	return 1;
		1050
		1051	return 0;
		1052	}
		1053
		1054	inline void
644	call_pending (void)	1055	call_pending (EV_P)
645	{	1056	{
646	int pri;	1057	int pri;
647		1058
648	for (pri = NUMPRI; pri--; )	1059	for (pri = NUMPRI; pri--; )
649	while (pendingcnt [pri])	1060	while (pendingcnt [pri])
650	{	1061	{
651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1062	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
652		1063
653	if (p->w)	1064	if (expect_true (p->w))
654	{	1065	{
655	p->w->pending = 0;	1066	p->w->pending = 0;
656	p->w->cb (p->w, p->events);	1067	EV_CB_INVOKE (p->w, p->events);
657	}	1068	}
658	}	1069	}
659	}	1070	}
660		1071
661	static void	1072	inline void
662	timers_reify (void)	1073	timers_reify (EV_P)
663	{	1074	{
664	while (timercnt && timers [0]->at <= now)	1075	while (timercnt && ((WT)timers [0])->at <= mn_now)
665	{	1076	{
666	struct ev_timer *w = timers [0];	1077	struct ev_timer *w = timers [0];
		1078
		1079	assert (("inactive timer on timer heap detected", ev_is_active (w)));
667		1080
668	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
669	if (w->repeat)	1082	if (w->repeat)
670	{	1083	{
671	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1084	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1085
672	w->at = now + w->repeat;	1086	((WT)w)->at += w->repeat;
		1087	if (((WT)w)->at < mn_now)
		1088	((WT)w)->at = mn_now;
		1089
673	downheap ((WT *)timers, timercnt, 0);	1090	downheap ((WT *)timers, timercnt, 0);
674	}	1091	}
675	else	1092	else
676	ev_timer_stop (w); /* nonrepeating: stop timer */	1093	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
677		1094
678	event ((W)w, EV_TIMEOUT);	1095	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
679	}	1096	}
680	}	1097	}
681		1098
682	static void	1099	#if EV_PERIODICS
		1100	inline void
683	periodics_reify (void)	1101	periodics_reify (EV_P)
684	{	1102	{
685	while (periodiccnt && periodics [0]->at <= ev_now)	1103	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
686	{	1104	{
687	struct ev_periodic *w = periodics [0];	1105	struct ev_periodic *w = periodics [0];
688		1106
		1107	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1108
689	/* first reschedule or stop timer */	1109	/* first reschedule or stop timer */
690	if (w->interval)	1110	if (w->reschedule_cb)
691	{	1111	{
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1113	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1114	downheap ((WT *)periodics, periodiccnt, 0);
		1115	}
		1116	else if (w->interval)
		1117	{
692	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1118	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
693	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1119	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
694	downheap ((WT *)periodics, periodiccnt, 0);	1120	downheap ((WT *)periodics, periodiccnt, 0);
695	}	1121	}
696	else	1122	else
697	ev_periodic_stop (w); /* nonrepeating: stop timer */	1123	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
698		1124
699	event ((W)w, EV_PERIODIC);	1125	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
700	}	1126	}
701	}	1127	}
702		1128
703	static void	1129	static void
704	periodics_reschedule (ev_tstamp diff)	1130	periodics_reschedule (EV_P)
705	{	1131	{
706	int i;	1132	int i;
707		1133
708	/* adjust periodics after time jump */	1134	/* adjust periodics after time jump */
709	for (i = 0; i < periodiccnt; ++i)	1135	for (i = 0; i < periodiccnt; ++i)
710	{	1136	{
711	struct ev_periodic *w = periodics [i];	1137	struct ev_periodic *w = periodics [i];
712		1138
		1139	if (w->reschedule_cb)
		1140	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
713	if (w->interval)	1141	else if (w->interval)
714	{
715	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1142	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
716
717	if (fabs (diff) >= 1e-4)
718	{
719	ev_periodic_stop (w);
720	ev_periodic_start (w);
721
722	i = 0; /* restart loop, inefficient, but time jumps should be rare */
723	}
724	}
725	}	1143	}
726	}
727		1144
728	static int	1145	/* now rebuild the heap */
		1146	for (i = periodiccnt >> 1; i--; )
		1147	downheap ((WT *)periodics, periodiccnt, i);
		1148	}
		1149	#endif
		1150
		1151	inline int
729	time_update_monotonic (void)	1152	time_update_monotonic (EV_P)
730	{	1153	{
731	now = get_clock ();	1154	mn_now = get_clock ();
732		1155
733	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1156	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
734	{	1157	{
735	ev_now = now + diff;	1158	ev_rt_now = rtmn_diff + mn_now;
736	return 0;	1159	return 0;
737	}	1160	}
738	else	1161	else
739	{	1162	{
740	now_floor = now;	1163	now_floor = mn_now;
741	ev_now = ev_time ();	1164	ev_rt_now = ev_time ();
742	return 1;	1165	return 1;
743	}	1166	}
744	}	1167	}
745		1168
746	static void	1169	inline void
747	time_update (void)	1170	time_update (EV_P)
748	{	1171	{
749	int i;	1172	int i;
750		1173
751	#if EV_USE_MONOTONIC	1174	#if EV_USE_MONOTONIC
752	if (expect_true (have_monotonic))	1175	if (expect_true (have_monotonic))
753	{	1176	{
754	if (time_update_monotonic ())	1177	if (time_update_monotonic (EV_A))
755	{	1178	{
756	ev_tstamp odiff = diff;	1179	ev_tstamp odiff = rtmn_diff;
757		1180
758	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1181	for (i = 4; --i; ) /* loop a few times, before making important decisions */
759	{	1182	{
760	diff = ev_now - now;	1183	rtmn_diff = ev_rt_now - mn_now;
761		1184
762	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1185	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
763	return; /* all is well */	1186	return; /* all is well */
764		1187
765	ev_now = ev_time ();	1188	ev_rt_now = ev_time ();
766	now = get_clock ();	1189	mn_now = get_clock ();
767	now_floor = now;	1190	now_floor = mn_now;
768	}	1191	}
769		1192
		1193	# if EV_PERIODICS
770	periodics_reschedule (diff - odiff);	1194	periodics_reschedule (EV_A);
		1195	# endif
771	/* no timer adjustment, as the monotonic clock doesn't jump */	1196	/* no timer adjustment, as the monotonic clock doesn't jump */
		1197	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
772	}	1198	}
773	}	1199	}
774	else	1200	else
775	#endif	1201	#endif
776	{	1202	{
777	ev_now = ev_time ();	1203	ev_rt_now = ev_time ();
778		1204
779	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1205	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
780	{	1206	{
		1207	#if EV_PERIODICS
781	periodics_reschedule (ev_now - now);	1208	periodics_reschedule (EV_A);
		1209	#endif
782		1210
783	/* adjust timers. this is easy, as the offset is the same for all */	1211	/* adjust timers. this is easy, as the offset is the same for all */
784	for (i = 0; i < timercnt; ++i)	1212	for (i = 0; i < timercnt; ++i)
785	timers [i]->at += diff;	1213	((WT)timers [i])->at += ev_rt_now - mn_now;
786	}	1214	}
787		1215
788	now = ev_now;	1216	mn_now = ev_rt_now;
789	}	1217	}
790	}	1218	}
791		1219
792	int ev_loop_done;	1220	void
		1221	ev_ref (EV_P)
		1222	{
		1223	++activecnt;
		1224	}
793		1225
		1226	void
		1227	ev_unref (EV_P)
		1228	{
		1229	--activecnt;
		1230	}
		1231
		1232	static int loop_done;
		1233
		1234	void
794	void ev_loop (int flags)	1235	ev_loop (EV_P_ int flags)
795	{	1236	{
796	double block;	1237	double block;
797	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1238	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
798		1239
799	do	1240	while (activecnt)
800	{	1241	{
801	/* queue check watchers (and execute them) */	1242	/* queue check watchers (and execute them) */
802	if (expect_false (preparecnt))	1243	if (expect_false (preparecnt))
803	{	1244	{
804	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1245	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
805	call_pending ();	1246	call_pending (EV_A);
806	}	1247	}
807		1248
		1249	/* we might have forked, so reify kernel state if necessary */
		1250	if (expect_false (postfork))
		1251	loop_fork (EV_A);
		1252
808	/* update fd-related kernel structures */	1253	/* update fd-related kernel structures */
809	fd_reify ();	1254	fd_reify (EV_A);
810		1255
811	/* calculate blocking time */	1256	/* calculate blocking time */
812		1257
813	/* we only need this for !monotonic clockor timers, but as we basically	1258	/* we only need this for !monotonic clock or timers, but as we basically
814	always have timers, we just calculate it always */	1259	always have timers, we just calculate it always */
815	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
816	if (expect_true (have_monotonic))	1261	if (expect_true (have_monotonic))
817	time_update_monotonic ();	1262	time_update_monotonic (EV_A);
818	else	1263	else
819	#endif	1264	#endif
820	{	1265	{
821	ev_now = ev_time ();	1266	ev_rt_now = ev_time ();
822	now = ev_now;	1267	mn_now = ev_rt_now;
823	}	1268	}
824		1269
825	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1270	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
826	block = 0.;	1271	block = 0.;
827	else	1272	else
828	{	1273	{
829	block = MAX_BLOCKTIME;	1274	block = MAX_BLOCKTIME;
830		1275
831	if (timercnt)	1276	if (timercnt)
832	{	1277	{
833	ev_tstamp to = timers [0]->at - now + method_fudge;	1278	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
834	if (block > to) block = to;	1279	if (block > to) block = to;
835	}	1280	}
836		1281
		1282	#if EV_PERIODICS
837	if (periodiccnt)	1283	if (periodiccnt)
838	{	1284	{
839	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1285	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
840	if (block > to) block = to;	1286	if (block > to) block = to;
841	}	1287	}
		1288	#endif
842		1289
843	if (block < 0.) block = 0.;	1290	if (expect_false (block < 0.)) block = 0.;
844	}	1291	}
845		1292
846	method_poll (block);	1293	backend_poll (EV_A_ block);
847		1294
848	/* update ev_now, do magic */	1295	/* update ev_rt_now, do magic */
849	time_update ();	1296	time_update (EV_A);
850		1297
851	/* queue pending timers and reschedule them */	1298	/* queue pending timers and reschedule them */
852	timers_reify (); /* relative timers called last */	1299	timers_reify (EV_A); /* relative timers called last */
		1300	#if EV_PERIODICS
853	periodics_reify (); /* absolute timers called first */	1301	periodics_reify (EV_A); /* absolute timers called first */
		1302	#endif
854		1303
855	/* queue idle watchers unless io or timers are pending */	1304	/* queue idle watchers unless io or timers are pending */
856	if (!pendingcnt)	1305	if (idlecnt && !any_pending (EV_A))
857	queue_events ((W *)idles, idlecnt, EV_IDLE);	1306	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
858		1307
859	/* queue check watchers, to be executed first */	1308	/* queue check watchers, to be executed first */
860	if (checkcnt)	1309	if (expect_false (checkcnt))
861	queue_events ((W *)checks, checkcnt, EV_CHECK);	1310	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
862		1311
863	call_pending ();	1312	call_pending (EV_A);
864	}
865	while (!ev_loop_done);
866		1313
		1314	if (expect_false (loop_done))
		1315	break;
		1316	}
		1317
867	if (ev_loop_done != 2)	1318	if (loop_done != 2)
868	ev_loop_done = 0;	1319	loop_done = 0;
		1320	}
		1321
		1322	void
		1323	ev_unloop (EV_P_ int how)
		1324	{
		1325	loop_done = how;
869	}	1326	}
870		1327
871	/*****************************************************************************/	1328	/*****************************************************************************/
872		1329
873	static void	1330	inline void
874	wlist_add (WL *head, WL elem)	1331	wlist_add (WL *head, WL elem)
875	{	1332	{
876	elem->next = *head;	1333	elem->next = *head;
877	*head = elem;	1334	*head = elem;
878	}	1335	}
879		1336
880	static void	1337	inline void
881	wlist_del (WL *head, WL elem)	1338	wlist_del (WL *head, WL elem)
882	{	1339	{
883	while (*head)	1340	while (*head)
884	{	1341	{
885	if (*head == elem)	1342	if (*head == elem)
…		…
890		1347
891	head = &(*head)->next;	1348	head = &(*head)->next;
892	}	1349	}
893	}	1350	}
894		1351
895	static void	1352	inline void
896	ev_clear_pending (W w)	1353	ev_clear_pending (EV_P_ W w)
897	{	1354	{
898	if (w->pending)	1355	if (w->pending)
899	{	1356	{
900	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1357	pendings [ABSPRI (w)][w->pending - 1].w = 0;
901	w->pending = 0;	1358	w->pending = 0;
902	}	1359	}
903	}	1360	}
904		1361
905	static void	1362	inline void
906	ev_start (W w, int active)	1363	ev_start (EV_P_ W w, int active)
907	{	1364	{
908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1365	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1366	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
910		1367
911	w->active = active;	1368	w->active = active;
		1369	ev_ref (EV_A);
912	}	1370	}
913		1371
914	static void	1372	inline void
915	ev_stop (W w)	1373	ev_stop (EV_P_ W w)
916	{	1374	{
		1375	ev_unref (EV_A);
917	w->active = 0;	1376	w->active = 0;
918	}	1377	}
919		1378
920	/*****************************************************************************/	1379	/*****************************************************************************/
921		1380
922	void	1381	void
923	ev_io_start (struct ev_io *w)	1382	ev_io_start (EV_P_ struct ev_io *w)
924	{	1383	{
925	int fd = w->fd;	1384	int fd = w->fd;
926		1385
927	if (ev_is_active (w))	1386	if (expect_false (ev_is_active (w)))
928	return;	1387	return;
929		1388
930	assert (("ev_io_start called with negative fd", fd >= 0));	1389	assert (("ev_io_start called with negative fd", fd >= 0));
931		1390
932	ev_start ((W)w, 1);	1391	ev_start (EV_A_ (W)w, 1);
933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1392	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
934	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1393	wlist_add ((WL *)&anfds[fd].head, (WL)w);
935		1394
936	fd_change (fd);	1395	fd_change (EV_A_ fd);
937	}	1396	}
938		1397
939	void	1398	void
940	ev_io_stop (struct ev_io *w)	1399	ev_io_stop (EV_P_ struct ev_io *w)
941	{	1400	{
942	ev_clear_pending ((W)w);	1401	ev_clear_pending (EV_A_ (W)w);
943	if (!ev_is_active (w))	1402	if (expect_false (!ev_is_active (w)))
944	return;	1403	return;
945		1404
		1405	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1406
946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1407	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
947	ev_stop ((W)w);	1408	ev_stop (EV_A_ (W)w);
948		1409
949	fd_change (w->fd);	1410	fd_change (EV_A_ w->fd);
950	}	1411	}
951		1412
952	void	1413	void
953	ev_timer_start (struct ev_timer *w)	1414	ev_timer_start (EV_P_ struct ev_timer *w)
954	{	1415	{
955	if (ev_is_active (w))	1416	if (expect_false (ev_is_active (w)))
956	return;	1417	return;
957		1418
958	w->at += now;	1419	((WT)w)->at += mn_now;
959		1420
960	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1421	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
961		1422
962	ev_start ((W)w, ++timercnt);	1423	ev_start (EV_A_ (W)w, ++timercnt);
963	array_needsize (timers, timermax, timercnt, );	1424	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
964	timers [timercnt - 1] = w;	1425	timers [timercnt - 1] = w;
965	upheap ((WT *)timers, timercnt - 1);	1426	upheap ((WT *)timers, timercnt - 1);
966	}
967		1427
		1428	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1429	}
		1430
968	void	1431	void
969	ev_timer_stop (struct ev_timer *w)	1432	ev_timer_stop (EV_P_ struct ev_timer *w)
970	{	1433	{
971	ev_clear_pending ((W)w);	1434	ev_clear_pending (EV_A_ (W)w);
972	if (!ev_is_active (w))	1435	if (expect_false (!ev_is_active (w)))
973	return;	1436	return;
974		1437
		1438	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1439
975	if (w->active < timercnt--)	1440	if (expect_true (((W)w)->active < timercnt--))
976	{	1441	{
977	timers [w->active - 1] = timers [timercnt];	1442	timers [((W)w)->active - 1] = timers [timercnt];
978	downheap ((WT *)timers, timercnt, w->active - 1);	1443	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
979	}	1444	}
980		1445
981	w->at = w->repeat;	1446	((WT)w)->at -= mn_now;
982		1447
983	ev_stop ((W)w);	1448	ev_stop (EV_A_ (W)w);
984	}	1449	}
985		1450
986	void	1451	void
987	ev_timer_again (struct ev_timer *w)	1452	ev_timer_again (EV_P_ struct ev_timer *w)
988	{	1453	{
989	if (ev_is_active (w))	1454	if (ev_is_active (w))
990	{	1455	{
991	if (w->repeat)	1456	if (w->repeat)
992	{	1457	{
993	w->at = now + w->repeat;	1458	((WT)w)->at = mn_now + w->repeat;
994	downheap ((WT *)timers, timercnt, w->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
995	}	1460	}
996	else	1461	else
997	ev_timer_stop (w);	1462	ev_timer_stop (EV_A_ w);
998	}	1463	}
999	else if (w->repeat)	1464	else if (w->repeat)
		1465	{
		1466	w->at = w->repeat;
1000	ev_timer_start (w);	1467	ev_timer_start (EV_A_ w);
		1468	}
1001	}	1469	}
1002		1470
		1471	#if EV_PERIODICS
1003	void	1472	void
1004	ev_periodic_start (struct ev_periodic *w)	1473	ev_periodic_start (EV_P_ struct ev_periodic *w)
1005	{	1474	{
1006	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1007	return;	1476	return;
1008		1477
		1478	if (w->reschedule_cb)
		1479	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1480	else if (w->interval)
		1481	{
1009	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1482	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1010
1011	/* this formula differs from the one in periodic_reify because we do not always round up */	1483	/* this formula differs from the one in periodic_reify because we do not always round up */
1012	if (w->interval)
1013	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1484	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1485	}
1014		1486
1015	ev_start ((W)w, ++periodiccnt);	1487	ev_start (EV_A_ (W)w, ++periodiccnt);
1016	array_needsize (periodics, periodicmax, periodiccnt, );	1488	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1017	periodics [periodiccnt - 1] = w;	1489	periodics [periodiccnt - 1] = w;
1018	upheap ((WT *)periodics, periodiccnt - 1);	1490	upheap ((WT *)periodics, periodiccnt - 1);
1019	}
1020		1491
		1492	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1493	}
		1494
1021	void	1495	void
1022	ev_periodic_stop (struct ev_periodic *w)	1496	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1023	{	1497	{
1024	ev_clear_pending ((W)w);	1498	ev_clear_pending (EV_A_ (W)w);
1025	if (!ev_is_active (w))	1499	if (expect_false (!ev_is_active (w)))
1026	return;	1500	return;
1027		1501
		1502	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1503
1028	if (w->active < periodiccnt--)	1504	if (expect_true (((W)w)->active < periodiccnt--))
1029	{	1505	{
1030	periodics [w->active - 1] = periodics [periodiccnt];	1506	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1031	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1507	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1032	}	1508	}
1033		1509
1034	ev_stop ((W)w);	1510	ev_stop (EV_A_ (W)w);
		1511	}
		1512
		1513	void
		1514	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1515	{
		1516	/* TODO: use adjustheap and recalculation */
		1517	ev_periodic_stop (EV_A_ w);
		1518	ev_periodic_start (EV_A_ w);
		1519	}
		1520	#endif
		1521
		1522	void
		1523	ev_idle_start (EV_P_ struct ev_idle *w)
		1524	{
		1525	if (expect_false (ev_is_active (w)))
		1526	return;
		1527
		1528	ev_start (EV_A_ (W)w, ++idlecnt);
		1529	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1530	idles [idlecnt - 1] = w;
		1531	}
		1532
		1533	void
		1534	ev_idle_stop (EV_P_ struct ev_idle *w)
		1535	{
		1536	ev_clear_pending (EV_A_ (W)w);
		1537	if (expect_false (!ev_is_active (w)))
		1538	return;
		1539
		1540	idles [((W)w)->active - 1] = idles [--idlecnt];
		1541	ev_stop (EV_A_ (W)w);
		1542	}
		1543
		1544	void
		1545	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1546	{
		1547	if (expect_false (ev_is_active (w)))
		1548	return;
		1549
		1550	ev_start (EV_A_ (W)w, ++preparecnt);
		1551	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1552	prepares [preparecnt - 1] = w;
		1553	}
		1554
		1555	void
		1556	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1557	{
		1558	ev_clear_pending (EV_A_ (W)w);
		1559	if (expect_false (!ev_is_active (w)))
		1560	return;
		1561
		1562	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1563	ev_stop (EV_A_ (W)w);
		1564	}
		1565
		1566	void
		1567	ev_check_start (EV_P_ struct ev_check *w)
		1568	{
		1569	if (expect_false (ev_is_active (w)))
		1570	return;
		1571
		1572	ev_start (EV_A_ (W)w, ++checkcnt);
		1573	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1574	checks [checkcnt - 1] = w;
		1575	}
		1576
		1577	void
		1578	ev_check_stop (EV_P_ struct ev_check *w)
		1579	{
		1580	ev_clear_pending (EV_A_ (W)w);
		1581	if (expect_false (!ev_is_active (w)))
		1582	return;
		1583
		1584	checks [((W)w)->active - 1] = checks [--checkcnt];
		1585	ev_stop (EV_A_ (W)w);
1035	}	1586	}
1036		1587
1037	#ifndef SA_RESTART	1588	#ifndef SA_RESTART
1038	# define SA_RESTART 0	1589	# define SA_RESTART 0
1039	#endif	1590	#endif
1040		1591
1041	void	1592	void
1042	ev_signal_start (struct ev_signal *w)	1593	ev_signal_start (EV_P_ struct ev_signal *w)
1043	{	1594	{
		1595	#if EV_MULTIPLICITY
		1596	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1597	#endif
1044	if (ev_is_active (w))	1598	if (expect_false (ev_is_active (w)))
1045	return;	1599	return;
1046		1600
1047	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1601	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1048		1602
1049	ev_start ((W)w, 1);	1603	ev_start (EV_A_ (W)w, 1);
1050	array_needsize (signals, signalmax, w->signum, signals_init);	1604	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1605	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1052		1606
1053	if (!w->next)	1607	if (!((WL)w)->next)
1054	{	1608	{
		1609	#if _WIN32
		1610	signal (w->signum, sighandler);
		1611	#else
1055	struct sigaction sa;	1612	struct sigaction sa;
1056	sa.sa_handler = sighandler;	1613	sa.sa_handler = sighandler;
1057	sigfillset (&sa.sa_mask);	1614	sigfillset (&sa.sa_mask);
1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1615	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1059	sigaction (w->signum, &sa, 0);	1616	sigaction (w->signum, &sa, 0);
		1617	#endif
1060	}	1618	}
1061	}	1619	}
1062		1620
1063	void	1621	void
1064	ev_signal_stop (struct ev_signal *w)	1622	ev_signal_stop (EV_P_ struct ev_signal *w)
1065	{	1623	{
1066	ev_clear_pending ((W)w);	1624	ev_clear_pending (EV_A_ (W)w);
1067	if (!ev_is_active (w))	1625	if (expect_false (!ev_is_active (w)))
1068	return;	1626	return;
1069		1627
1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1628	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1071	ev_stop ((W)w);	1629	ev_stop (EV_A_ (W)w);
1072		1630
1073	if (!signals [w->signum - 1].head)	1631	if (!signals [w->signum - 1].head)
1074	signal (w->signum, SIG_DFL);	1632	signal (w->signum, SIG_DFL);
1075	}	1633	}
1076		1634
1077	void	1635	void
1078	ev_idle_start (struct ev_idle *w)	1636	ev_child_start (EV_P_ struct ev_child *w)
1079	{	1637	{
		1638	#if EV_MULTIPLICITY
		1639	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1640	#endif
1080	if (ev_is_active (w))	1641	if (expect_false (ev_is_active (w)))
1081	return;	1642	return;
1082		1643
1083	ev_start ((W)w, ++idlecnt);	1644	ev_start (EV_A_ (W)w, 1);
1084	array_needsize (idles, idlemax, idlecnt, );	1645	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1085	idles [idlecnt - 1] = w;
1086	}	1646	}
1087		1647
1088	void	1648	void
1089	ev_idle_stop (struct ev_idle *w)	1649	ev_child_stop (EV_P_ struct ev_child *w)
1090	{	1650	{
1091	ev_clear_pending ((W)w);	1651	ev_clear_pending (EV_A_ (W)w);
1092	if (ev_is_active (w))	1652	if (expect_false (!ev_is_active (w)))
1093	return;	1653	return;
1094		1654
1095	idles [w->active - 1] = idles [--idlecnt];
1096	ev_stop ((W)w);
1097	}
1098
1099	void
1100	ev_prepare_start (struct ev_prepare *w)
1101	{
1102	if (ev_is_active (w))
1103	return;
1104
1105	ev_start ((W)w, ++preparecnt);
1106	array_needsize (prepares, preparemax, preparecnt, );
1107	prepares [preparecnt - 1] = w;
1108	}
1109
1110	void
1111	ev_prepare_stop (struct ev_prepare *w)
1112	{
1113	ev_clear_pending ((W)w);
1114	if (ev_is_active (w))
1115	return;
1116
1117	prepares [w->active - 1] = prepares [--preparecnt];
1118	ev_stop ((W)w);
1119	}
1120
1121	void
1122	ev_check_start (struct ev_check *w)
1123	{
1124	if (ev_is_active (w))
1125	return;
1126
1127	ev_start ((W)w, ++checkcnt);
1128	array_needsize (checks, checkmax, checkcnt, );
1129	checks [checkcnt - 1] = w;
1130	}
1131
1132	void
1133	ev_check_stop (struct ev_check *w)
1134	{
1135	ev_clear_pending ((W)w);
1136	if (ev_is_active (w))
1137	return;
1138
1139	checks [w->active - 1] = checks [--checkcnt];
1140	ev_stop ((W)w);
1141	}
1142
1143	void
1144	ev_child_start (struct ev_child *w)
1145	{
1146	if (ev_is_active (w))
1147	return;
1148
1149	ev_start ((W)w, 1);
1150	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1151	}
1152
1153	void
1154	ev_child_stop (struct ev_child *w)
1155	{
1156	ev_clear_pending ((W)w);
1157	if (ev_is_active (w))
1158	return;
1159
1160	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1655	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1161	ev_stop ((W)w);	1656	ev_stop (EV_A_ (W)w);
1162	}	1657	}
1163		1658
1164	/*****************************************************************************/	1659	/*****************************************************************************/
1165		1660
1166	struct ev_once	1661	struct ev_once
…		…
1170	void (cb)(int revents, void arg);	1665	void (cb)(int revents, void arg);
1171	void *arg;	1666	void *arg;
1172	};	1667	};
1173		1668
1174	static void	1669	static void
1175	once_cb (struct ev_once *once, int revents)	1670	once_cb (EV_P_ struct ev_once *once, int revents)
1176	{	1671	{
1177	void (cb)(int revents, void arg) = once->cb;	1672	void (cb)(int revents, void arg) = once->cb;
1178	void *arg = once->arg;	1673	void *arg = once->arg;
1179		1674
1180	ev_io_stop (&once->io);	1675	ev_io_stop (EV_A_ &once->io);
1181	ev_timer_stop (&once->to);	1676	ev_timer_stop (EV_A_ &once->to);
1182	free (once);	1677	ev_free (once);
1183		1678
1184	cb (revents, arg);	1679	cb (revents, arg);
1185	}	1680	}
1186		1681
1187	static void	1682	static void
1188	once_cb_io (struct ev_io *w, int revents)	1683	once_cb_io (EV_P_ struct ev_io *w, int revents)
1189	{	1684	{
1190	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1685	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1191	}	1686	}
1192		1687
1193	static void	1688	static void
1194	once_cb_to (struct ev_timer *w, int revents)	1689	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1195	{	1690	{
1196	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1691	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1197	}	1692	}
1198		1693
1199	void	1694	void
1200	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1695	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1201	{	1696	{
1202	struct ev_once *once = malloc (sizeof (struct ev_once));	1697	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1203		1698
1204	if (!once)	1699	if (expect_false (!once))
		1700	{
1205	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1701	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1206	else	1702	return;
1207	{	1703	}
		1704
1208	once->cb = cb;	1705	once->cb = cb;
1209	once->arg = arg;	1706	once->arg = arg;
1210		1707
1211	ev_watcher_init (&once->io, once_cb_io);	1708	ev_init (&once->io, once_cb_io);
1212	if (fd >= 0)	1709	if (fd >= 0)
1213	{	1710	{
1214	ev_io_set (&once->io, fd, events);	1711	ev_io_set (&once->io, fd, events);
1215	ev_io_start (&once->io);	1712	ev_io_start (EV_A_ &once->io);
1216	}	1713	}
1217		1714
1218	ev_watcher_init (&once->to, once_cb_to);	1715	ev_init (&once->to, once_cb_to);
1219	if (timeout >= 0.)	1716	if (timeout >= 0.)
1220	{	1717	{
1221	ev_timer_set (&once->to, timeout, 0.);	1718	ev_timer_set (&once->to, timeout, 0.);
1222	ev_timer_start (&once->to);	1719	ev_timer_start (EV_A_ &once->to);
1223	}
1224	}
1225	}
1226
1227	/*****************************************************************************/
1228
1229	#if 0
1230
1231	struct ev_io wio;
1232
1233	static void
1234	sin_cb (struct ev_io *w, int revents)
1235	{
1236	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1237	}
1238
1239	static void
1240	ocb (struct ev_timer *w, int revents)
1241	{
1242	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1243	ev_timer_stop (w);
1244	ev_timer_start (w);
1245	}
1246
1247	static void
1248	scb (struct ev_signal *w, int revents)
1249	{
1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1251	ev_io_stop (&wio);
1252	ev_io_start (&wio);
1253	}
1254
1255	static void
1256	gcb (struct ev_signal *w, int revents)
1257	{
1258	fprintf (stderr, "generic %x\n", revents);
1259
1260	}
1261
1262	int main (void)
1263	{
1264	ev_init (0);
1265
1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
1267	ev_io_start (&wio);
1268
1269	struct ev_timer t[10000];
1270
1271	#if 0
1272	int i;
1273	for (i = 0; i < 10000; ++i)
1274	{	1720	}
1275	struct ev_timer *w = t + i;
1276	ev_watcher_init (w, ocb, i);
1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1278	ev_timer_start (w);
1279	if (drand48 () < 0.5)
1280	ev_timer_stop (w);
1281	}
1282	#endif
1283
1284	struct ev_timer t1;
1285	ev_timer_init (&t1, ocb, 5, 10);
1286	ev_timer_start (&t1);
1287
1288	struct ev_signal sig;
1289	ev_signal_init (&sig, scb, SIGQUIT);
1290	ev_signal_start (&sig);
1291
1292	struct ev_check cw;
1293	ev_check_init (&cw, gcb);
1294	ev_check_start (&cw);
1295
1296	struct ev_idle iw;
1297	ev_idle_init (&iw, gcb);
1298	ev_idle_start (&iw);
1299
1300	ev_loop (0);
1301
1302	return 0;
1303	}	1721	}
1304		1722
		1723	#ifdef __cplusplus
		1724	}
1305	#endif	1725	#endif
1306		1726
1307
1308
1309

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Comparing libev/ev.c (file contents): Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs. Revision 1.131 by root, Fri Nov 23 05:43:45 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.131 by root, Fri Nov 23 05:43:45 2007 UTC