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

Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 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	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		56	# define EV_USE_SELECT 1
		57	# else
		58	# define EV_USE_SELECT 0
		59	# endif
		60
		61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		62	# define EV_USE_POLL 1
		63	# else
		64	# define EV_USE_POLL 0
		65	# endif
		66
		67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		68	# define EV_USE_EPOLL 1
		69	# else
		70	# define EV_USE_EPOLL 0
		71	# endif
		72
		73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		74	# define EV_USE_KQUEUE 1
		75	# else
		76	# define EV_USE_KQUEUE 0
		77	# endif
		78
		79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		80	# define EV_USE_PORT 1
		81	# else
		82	# define EV_USE_PORT 0
		83	# endif
		84
33	#endif	85	#endif
34		86
35	#include <math.h>	87	#include <math.h>
36	#include <stdlib.h>	88	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	89	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	90	#include <stddef.h>
41		91
42	#include <stdio.h>	92	#include <stdio.h>
43		93
44	#include <assert.h>	94	#include <assert.h>
45	#include <errno.h>	95	#include <errno.h>
46	#include <sys/types.h>	96	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	97	#include <time.h>
50		98
		99	#include <signal.h>
		100
		101	#ifndef _WIN32
		102	# include <unistd.h>
		103	# include <sys/time.h>
		104	# include <sys/wait.h>
		105	#else
		106	# define WIN32_LEAN_AND_MEAN
		107	# include <windows.h>
		108	# ifndef EV_SELECT_IS_WINSOCKET
		109	# define EV_SELECT_IS_WINSOCKET 1
		110	# endif
		111	#endif
		112
51	/**/	113	/**/
52		114
53	#ifndef EV_USE_MONOTONIC	115	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 0
55	#endif	121	#endif
56		122
57	#ifndef EV_USE_SELECT	123	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	124	# define EV_USE_SELECT 1
59	#endif	125	#endif
60		126
61	#ifndef EV_USE_POLL	127	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	128	# ifdef _WIN32
		129	# define EV_USE_POLL 0
		130	# else
		131	# define EV_USE_POLL 1
		132	# endif
63	#endif	133	#endif
64		134
65	#ifndef EV_USE_EPOLL	135	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	136	# define EV_USE_EPOLL 0
67	#endif	137	#endif
68		138
		139	#ifndef EV_USE_KQUEUE
		140	# define EV_USE_KQUEUE 0
		141	#endif
		142
69	#ifndef EV_USE_REALTIME	143	#ifndef EV_USE_PORT
70	# define EV_USE_REALTIME 1	144	# define EV_USE_PORT 0
71	#endif	145	#endif
72		146
73	/**/	147	/**/
		148
		149	/* darwin simply cannot be helped */
		150	#ifdef __APPLE__
		151	# undef EV_USE_POLL
		152	# undef EV_USE_KQUEUE
		153	#endif
74		154
75	#ifndef CLOCK_MONOTONIC	155	#ifndef CLOCK_MONOTONIC
76	# undef EV_USE_MONOTONIC	156	# undef EV_USE_MONOTONIC
77	# define EV_USE_MONOTONIC 0	157	# define EV_USE_MONOTONIC 0
78	#endif	158	#endif
…		…
80	#ifndef CLOCK_REALTIME	160	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	161	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	162	# define EV_USE_REALTIME 0
83	#endif	163	#endif
84		164
		165	#if EV_SELECT_IS_WINSOCKET
		166	# include <winsock.h>
		167	#endif
		168
85	/**/	169	/**/
86		170
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	171	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	172	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	173	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	174	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
91		175
		176	#ifdef EV_H
		177	# include EV_H
		178	#else
92	#include "ev.h"	179	# include "ev.h"
		180	#endif
93		181
94	#if __GNUC__ >= 3	182	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	183	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	184	# define inline static inline
97	#else	185	#else
98	# define expect(expr,value) (expr)	186	# define expect(expr,value) (expr)
99	# define inline static	187	# define inline static
100	#endif	188	#endif
101		189
…		…
103	#define expect_true(expr) expect ((expr) != 0, 1)	191	#define expect_true(expr) expect ((expr) != 0, 1)
104		192
105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
107		195
		196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		197	#define EMPTY2(a,b) /* used to suppress some warnings */
		198
108	typedef struct ev_watcher *W;	199	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	200	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	201	typedef struct ev_watcher_time *WT;
111		202
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		204
		205	#ifdef _WIN32
		206	# include "ev_win32.c"
		207	#endif
		208
		209	/*****************************************************************************/
		210
		211	static void (syserr_cb)(const char msg);
		212
		213	void ev_set_syserr_cb (void (cb)(const char msg))
		214	{
		215	syserr_cb = cb;
		216	}
		217
		218	static void
		219	syserr (const char *msg)
		220	{
		221	if (!msg)
		222	msg = "(libev) system error";
		223
		224	if (syserr_cb)
		225	syserr_cb (msg);
		226	else
		227	{
		228	perror (msg);
		229	abort ();
		230	}
		231	}
		232
		233	static void (alloc)(void *ptr, long size);
		234
		235	void ev_set_allocator (void (cb)(void *ptr, long size))
		236	{
		237	alloc = cb;
		238	}
		239
		240	static void *
		241	ev_realloc (void *ptr, long size)
		242	{
		243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		244
		245	if (!ptr && size)
		246	{
		247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		248	abort ();
		249	}
		250
		251	return ptr;
		252	}
		253
		254	#define ev_malloc(size) ev_realloc (0, (size))
		255	#define ev_free(ptr) ev_realloc ((ptr), 0)
		256
		257	/*****************************************************************************/
		258
		259	typedef struct
		260	{
		261	WL head;
		262	unsigned char events;
		263	unsigned char reify;
		264	#if EV_SELECT_IS_WINSOCKET
		265	SOCKET handle;
		266	#endif
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	ev_tstamp ev_rt_now;
		280	#define ev_rt_now ((loop)->ev_rt_now)
		281	#define VAR(name,decl) decl;
		282	#include "ev_vars.h"
		283	#undef VAR
		284	};
		285	#include "ev_wrap.h"
		286
		287	static struct ev_loop default_loop_struct;
		288	struct ev_loop *ev_default_loop_ptr;
		289
		290	#else
		291
113	ev_tstamp ev_now;	292	ev_tstamp ev_rt_now;
114	int ev_method;	293	#define VAR(name,decl) static decl;
		294	#include "ev_vars.h"
		295	#undef VAR
115		296
116	static int have_monotonic; /* runtime */	297	static int ev_default_loop_ptr;
117		298
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	299	#endif
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		300
122	/*****************************************************************************/	301	/*****************************************************************************/
123		302
124	ev_tstamp	303	ev_tstamp
125	ev_time (void)	304	ev_time (void)
…		…
133	gettimeofday (&tv, 0);	312	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	313	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	314	#endif
136	}	315	}
137		316
138	static ev_tstamp	317	inline ev_tstamp
139	get_clock (void)	318	get_clock (void)
140	{	319	{
141	#if EV_USE_MONOTONIC	320	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	321	if (expect_true (have_monotonic))
143	{	322	{
…		…
148	#endif	327	#endif
149		328
150	return ev_time ();	329	return ev_time ();
151	}	330	}
152		331
		332	#if EV_MULTIPLICITY
		333	ev_tstamp
		334	ev_now (EV_P)
		335	{
		336	return ev_rt_now;
		337	}
		338	#endif
		339
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	340	#define array_roundsize(type,n) (((n) \| 4) & ~3)
154		341
155	#define array_needsize(base,cur,cnt,init) \	342	#define array_needsize(type,base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	343	if (expect_false ((cnt) > cur)) \
157	{ \	344	{ \
158	int newcnt = cur; \	345	int newcnt = cur; \
159	do \	346	do \
160	{ \	347	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	348	newcnt = array_roundsize (type, newcnt << 1); \
162	} \	349	} \
163	while ((cnt) > newcnt); \	350	while ((cnt) > newcnt); \
164	\	351	\
165	base = realloc (base, sizeof (base) (newcnt)); \	352	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
166	init (base + cur, newcnt - cur); \	353	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	354	cur = newcnt; \
168	}	355	}
		356
		357	#define array_slim(type,stem) \
		358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		359	{ \
		360	stem ## max = array_roundsize (stem ## cnt >> 1); \
		361	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		363	}
		364
		365	#define array_free(stem, idx) \
		366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
169		367
170	/*****************************************************************************/	368	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		369
182	static void	370	static void
183	anfds_init (ANFD *base, int count)	371	anfds_init (ANFD *base, int count)
184	{	372	{
185	while (count--)	373	while (count--)
…		…
190		378
191	++base;	379	++base;
192	}	380	}
193	}	381	}
194		382
195	typedef struct	383	void
		384	ev_feed_event (EV_P_ void *w, int revents)
196	{	385	{
197	W w;	386	W w_ = (W)w;
198	int events;
199	} ANPENDING;
200		387
201	static ANPENDING *pendings [NUMPRI];	388	if (expect_false (w_->pending))
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void
205	event (W w, int events)
206	{
207	if (w->pending)
208	{	389	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	390	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
210	return;	391	return;
211	}	392	}
212		393
213	w->pending = ++pendingcnt [ABSPRI (w)];	394	w_->pending = ++pendingcnt [ABSPRI (w_)];
214	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
217	}	398	}
218		399
219	static void	400	static void
220	queue_events (W *events, int eventcnt, int type)	401	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	402	{
222	int i;	403	int i;
223		404
224	for (i = 0; i < eventcnt; ++i)	405	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	406	ev_feed_event (EV_A_ events [i], type);
226	}	407	}
227		408
228	static void	409	inline void
229	fd_event (int fd, int events)	410	fd_event (EV_P_ int fd, int revents)
230	{	411	{
231	ANFD *anfd = anfds + fd;	412	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	413	struct ev_io *w;
233		414
234	for (w = anfd->head; w; w = w->next)	415	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	416	{
236	int ev = w->events & events;	417	int ev = w->events & revents;
237		418
238	if (ev)	419	if (ev)
239	event ((W)w, ev);	420	ev_feed_event (EV_A_ (W)w, ev);
240	}	421	}
		422	}
		423
		424	void
		425	ev_feed_fd_event (EV_P_ int fd, int revents)
		426	{
		427	fd_event (EV_A_ fd, revents);
241	}	428	}
242		429
243	/*****************************************************************************/	430	/*****************************************************************************/
244		431
245	static int *fdchanges;	432	inline void
246	static int fdchangemax, fdchangecnt;	433	fd_reify (EV_P)
247
248	static void
249	fd_reify (void)
250	{	434	{
251	int i;	435	int i;
252		436
253	for (i = 0; i < fdchangecnt; ++i)	437	for (i = 0; i < fdchangecnt; ++i)
254	{	438	{
…		…
256	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	441	struct ev_io *w;
258		442
259	int events = 0;	443	int events = 0;
260		444
261	for (w = anfd->head; w; w = w->next)	445	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	446	events \|= w->events;
263		447
		448	#if EV_SELECT_IS_WINSOCKET
		449	if (events)
		450	{
		451	unsigned long argp;
		452	anfd->handle = _get_osfhandle (fd);
		453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		454	}
		455	#endif
		456
264	anfd->reify = 0;	457	anfd->reify = 0;
265		458
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	459	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	460	anfd->events = events;
270	}
271	}	461	}
272		462
273	fdchangecnt = 0;	463	fdchangecnt = 0;
274	}	464	}
275		465
276	static void	466	static void
277	fd_change (int fd)	467	fd_change (EV_P_ int fd)
278	{	468	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	469	if (expect_false (anfds [fd].reify))
280	return;	470	return;
281		471
282	anfds [fd].reify = 1;	472	anfds [fd].reify = 1;
283		473
284	++fdchangecnt;	474	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
286	fdchanges [fdchangecnt - 1] = fd;	476	fdchanges [fdchangecnt - 1] = fd;
287	}	477	}
288		478
289	static void	479	static void
290	fd_kill (int fd)	480	fd_kill (EV_P_ int fd)
291	{	481	{
292	struct ev_io *w;	482	struct ev_io *w;
293		483
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	484	while ((w = (struct ev_io *)anfds [fd].head))
296	{	485	{
297	ev_io_stop (w);	486	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	487	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	488	}
		489	}
		490
		491	inline int
		492	fd_valid (int fd)
		493	{
		494	#ifdef _WIN32
		495	return _get_osfhandle (fd) != -1;
		496	#else
		497	return fcntl (fd, F_GETFD) != -1;
		498	#endif
300	}	499	}
301		500
302	/* called on EBADF to verify fds */	501	/* called on EBADF to verify fds */
303	static void	502	static void
304	fd_ebadf (void)	503	fd_ebadf (EV_P)
305	{	504	{
306	int fd;	505	int fd;
307		506
308	for (fd = 0; fd < anfdmax; ++fd)	507	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	508	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	509	if (!fd_valid (fd) == -1 && errno == EBADF)
311	fd_kill (fd);	510	fd_kill (EV_A_ fd);
312	}	511	}
313		512
314	/* called on ENOMEM in select/poll to kill some fds and retry */	513	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	514	static void
316	fd_enomem (void)	515	fd_enomem (EV_P)
317	{	516	{
318	int fd = anfdmax;	517	int fd;
319		518
320	while (fd--)	519	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	520	if (anfds [fd].events)
322	{	521	{
323	close (fd);
324	fd_kill (fd);	522	fd_kill (EV_A_ fd);
325	return;	523	return;
326	}	524	}
327	}	525	}
328		526
		527	/* usually called after fork if method needs to re-arm all fds from scratch */
		528	static void
		529	fd_rearm_all (EV_P)
		530	{
		531	int fd;
		532
		533	/* this should be highly optimised to not do anything but set a flag */
		534	for (fd = 0; fd < anfdmax; ++fd)
		535	if (anfds [fd].events)
		536	{
		537	anfds [fd].events = 0;
		538	fd_change (EV_A_ fd);
		539	}
		540	}
		541
329	/*****************************************************************************/	542	/*****************************************************************************/
330		543
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	544	static void
338	upheap (WT *timers, int k)	545	upheap (WT *heap, int k)
339	{	546	{
340	WT w = timers [k];	547	WT w = heap [k];
341		548
342	while (k && timers [k >> 1]->at > w->at)	549	while (k && heap [k >> 1]->at > w->at)
343	{	550	{
344	timers [k] = timers [k >> 1];	551	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
346	k >>= 1;	553	k >>= 1;
347	}	554	}
348		555
349	timers [k] = w;	556	heap [k] = w;
350	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
351		558
352	}	559	}
353		560
354	static void	561	static void
355	downheap (WT *timers, int N, int k)	562	downheap (WT *heap, int N, int k)
356	{	563	{
357	WT w = timers [k];	564	WT w = heap [k];
358		565
359	while (k < (N >> 1))	566	while (k < (N >> 1))
360	{	567	{
361	int j = k << 1;	568	int j = k << 1;
362		569
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	571	++j;
365		572
366	if (w->at <= timers [j]->at)	573	if (w->at <= heap [j]->at)
367	break;	574	break;
368		575
369	timers [k] = timers [j];	576	heap [k] = heap [j];
370	timers [k]->active = k + 1;	577	((W)heap [k])->active = k + 1;
371	k = j;	578	k = j;
372	}	579	}
373		580
374	timers [k] = w;	581	heap [k] = w;
375	timers [k]->active = k + 1;	582	((W)heap [k])->active = k + 1;
		583	}
		584
		585	inline void
		586	adjustheap (WT *heap, int N, int k)
		587	{
		588	upheap (heap, k);
		589	downheap (heap, N, k);
376	}	590	}
377		591
378	/*****************************************************************************/	592	/*****************************************************************************/
379		593
380	typedef struct	594	typedef struct
381	{	595	{
382	struct ev_signal *head;	596	WL head;
383	sig_atomic_t volatile gotsig;	597	sig_atomic_t volatile gotsig;
384	} ANSIG;	598	} ANSIG;
385		599
386	static ANSIG *signals;	600	static ANSIG *signals;
387	static int signalmax;	601	static int signalmax;
…		…
403	}	617	}
404		618
405	static void	619	static void
406	sighandler (int signum)	620	sighandler (int signum)
407	{	621	{
		622	#if _WIN32
		623	signal (signum, sighandler);
		624	#endif
		625
408	signals [signum - 1].gotsig = 1;	626	signals [signum - 1].gotsig = 1;
409		627
410	if (!gotsig)	628	if (!gotsig)
411	{	629	{
		630	int old_errno = errno;
412	gotsig = 1;	631	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
		633	errno = old_errno;
414	}	634	}
415	}	635	}
416		636
		637	void
		638	ev_feed_signal_event (EV_P_ int signum)
		639	{
		640	WL w;
		641
		642	#if EV_MULTIPLICITY
		643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		644	#endif
		645
		646	--signum;
		647
		648	if (signum < 0 \|\| signum >= signalmax)
		649	return;
		650
		651	signals [signum].gotsig = 0;
		652
		653	for (w = signals [signum].head; w; w = w->next)
		654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		655	}
		656
417	static void	657	static void
418	sigcb (struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	659	{
420	struct ev_signal *w;
421	int signum;	660	int signum;
422		661
423	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	663	gotsig = 0;
425		664
426	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
427	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
428	{	667	ev_feed_signal_event (EV_A_ signum + 1);
429	signals [signum].gotsig = 0;
430
431	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);
433	}
434	}	668	}
435		669
436	static void	670	static void
437	siginit (void)	671	fd_intern (int fd)
438	{	672	{
		673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	677	fcntl (fd, F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441
442	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	678	fcntl (fd, F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	679	#endif
		680	}
		681
		682	static void
		683	siginit (EV_P)
		684	{
		685	fd_intern (sigpipe [0]);
		686	fd_intern (sigpipe [1]);
445		687
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
		690	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	691	}
449		692
450	/*****************************************************************************/	693	/*****************************************************************************/
451		694
452	static struct ev_idle **idles;
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
464	static struct ev_signal childev;	699	static struct ev_signal childev;
465		700
466	#ifndef WCONTINUED	701	#ifndef WCONTINUED
467	# define WCONTINUED 0	702	# define WCONTINUED 0
468	#endif	703	#endif
469		704
470	static void	705	static void
471	childcb (struct ev_signal *sw, int revents)	706	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	707	{
473	struct ev_child *w;	708	struct ev_child *w;
		709
		710	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		711	if (w->pid == pid \|\| !w->pid)
		712	{
		713	ev_priority (w) = ev_priority (sw); /* need to do it now */
		714	w->rpid = pid;
		715	w->rstatus = status;
		716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		717	}
		718	}
		719
		720	static void
		721	childcb (EV_P_ struct ev_signal *sw, int revents)
		722	{
474	int pid, status;	723	int pid, status;
475		724
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	725	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	726	{
478	if (w->pid == pid \|\| !w->pid)	727	/* make sure we are called again until all childs have been reaped */
479	{	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	729
481	event ((W)w, EV_CHILD);	730	child_reap (EV_A_ sw, pid, pid, status);
482	}	731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		732	}
483	}	733	}
		734
		735	#endif
484		736
485	/*****************************************************************************/	737	/*****************************************************************************/
486		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
		742	#if EV_USE_KQUEUE
		743	# include "ev_kqueue.c"
		744	#endif
487	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	746	# include "ev_epoll.c"
489	#endif	747	#endif
490	#if EV_USE_POLL	748	#if EV_USE_POLL
491	# include "ev_poll.c"	749	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	762	ev_version_minor (void)
505	{	763	{
506	return EV_VERSION_MINOR;	764	return EV_VERSION_MINOR;
507	}	765	}
508		766
509	/* return true if we are running with elevated privileges and ignore env variables */	767	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	768	static int
511	enable_secure ()	769	enable_secure (void)
512	{	770	{
		771	#ifdef _WIN32
		772	return 0;
		773	#else
513	return getuid () != geteuid ()	774	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	775	\|\| getgid () != getegid ();
		776	#endif
515	}	777	}
516		778
517	int ev_init (int methods)	779	unsigned int
		780	ev_method (EV_P)
518	{	781	{
		782	return method;
		783	}
		784
		785	static void
		786	loop_init (EV_P_ unsigned int flags)
		787	{
519	if (!ev_method)	788	if (!method)
520	{	789	{
521	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
522	{	791	{
523	struct timespec ts;	792	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	794	have_monotonic = 1;
526	}	795	}
527	#endif	796	#endif
528		797
529	ev_now = ev_time ();	798	ev_rt_now = ev_time ();
530	now = get_clock ();	799	mn_now = get_clock ();
531	now_floor = now;	800	now_floor = mn_now;
532	diff = ev_now - now;	801	rtmn_diff = ev_rt_now - mn_now;
533		802
534	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
535	return 0;
536
537	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	804	flags = atoi (getenv ("LIBEV_FLAGS"));
540	else
541	methods = EVMETHOD_ANY;
542		805
		806	if (!(flags & 0x0000ffff))
		807	flags \|= 0x0000ffff;
		808
543	ev_method = 0;	809	method = 0;
		810	#if EV_USE_PORT
		811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		812	#endif
		813	#if EV_USE_KQUEUE
		814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		815	#endif
544	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
546	#endif	818	#endif
547	#if EV_USE_POLL	819	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
549	#endif	821	#endif
550	#if EV_USE_SELECT	822	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
552	#endif	824	#endif
553		825
		826	ev_init (&sigev, sigcb);
		827	ev_set_priority (&sigev, EV_MAXPRI);
		828	}
		829	}
		830
		831	static void
		832	loop_destroy (EV_P)
		833	{
		834	int i;
		835
		836	#if EV_USE_PORT
		837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		838	#endif
		839	#if EV_USE_KQUEUE
		840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		841	#endif
		842	#if EV_USE_EPOLL
		843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		844	#endif
		845	#if EV_USE_POLL
		846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		847	#endif
		848	#if EV_USE_SELECT
		849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		850	#endif
		851
		852	for (i = NUMPRI; i--; )
		853	array_free (pending, [i]);
		854
		855	/* have to use the microsoft-never-gets-it-right macro */
		856	array_free (fdchange, EMPTY0);
		857	array_free (timer, EMPTY0);
		858	#if EV_PERIODICS
		859	array_free (periodic, EMPTY0);
		860	#endif
		861	array_free (idle, EMPTY0);
		862	array_free (prepare, EMPTY0);
		863	array_free (check, EMPTY0);
		864
		865	method = 0;
		866	}
		867
		868	static void
		869	loop_fork (EV_P)
		870	{
		871	#if EV_USE_PORT
		872	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		873	#endif
		874	#if EV_USE_KQUEUE
		875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		876	#endif
		877	#if EV_USE_EPOLL
		878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		879	#endif
		880
		881	if (ev_is_active (&sigev))
		882	{
		883	/* default loop */
		884
		885	ev_ref (EV_A);
		886	ev_io_stop (EV_A_ &sigev);
		887	close (sigpipe [0]);
		888	close (sigpipe [1]);
		889
		890	while (pipe (sigpipe))
		891	syserr ("(libev) error creating pipe");
		892
		893	siginit (EV_A);
		894	}
		895
		896	postfork = 0;
		897	}
		898
		899	#if EV_MULTIPLICITY
		900	struct ev_loop *
		901	ev_loop_new (unsigned int flags)
		902	{
		903	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		904
		905	memset (loop, 0, sizeof (struct ev_loop));
		906
		907	loop_init (EV_A_ flags);
		908
		909	if (ev_method (EV_A))
		910	return loop;
		911
		912	return 0;
		913	}
		914
		915	void
		916	ev_loop_destroy (EV_P)
		917	{
		918	loop_destroy (EV_A);
		919	ev_free (loop);
		920	}
		921
		922	void
		923	ev_loop_fork (EV_P)
		924	{
		925	postfork = 1;
		926	}
		927
		928	#endif
		929
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *
		932	ev_default_loop_init (unsigned int flags)
		933	#else
		934	int
		935	ev_default_loop (unsigned int flags)
		936	#endif
		937	{
		938	if (sigpipe [0] == sigpipe [1])
		939	if (pipe (sigpipe))
		940	return 0;
		941
		942	if (!ev_default_loop_ptr)
		943	{
		944	#if EV_MULTIPLICITY
		945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		946	#else
		947	ev_default_loop_ptr = 1;
		948	#endif
		949
		950	loop_init (EV_A_ flags);
		951
554	if (ev_method)	952	if (ev_method (EV_A))
555	{	953	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	954	siginit (EV_A);
558		955
		956	#ifndef _WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
		958	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	959	ev_signal_start (EV_A_ &childev);
		960	ev_unref (EV_A); /* child watcher should not keep loop alive */
		961	#endif
561	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
562	}	965	}
563		966
564	return ev_method;	967	return ev_default_loop_ptr;
		968	}
		969
		970	void
		971	ev_default_destroy (void)
		972	{
		973	#if EV_MULTIPLICITY
		974	struct ev_loop *loop = ev_default_loop_ptr;
		975	#endif
		976
		977	#ifndef _WIN32
		978	ev_ref (EV_A); /* child watcher */
		979	ev_signal_stop (EV_A_ &childev);
		980	#endif
		981
		982	ev_ref (EV_A); /* signal watcher */
		983	ev_io_stop (EV_A_ &sigev);
		984
		985	close (sigpipe [0]); sigpipe [0] = 0;
		986	close (sigpipe [1]); sigpipe [1] = 0;
		987
		988	loop_destroy (EV_A);
		989	}
		990
		991	void
		992	ev_default_fork (void)
		993	{
		994	#if EV_MULTIPLICITY
		995	struct ev_loop *loop = ev_default_loop_ptr;
		996	#endif
		997
		998	if (method)
		999	postfork = 1;
565	}	1000	}
566		1001
567	/*****************************************************************************/	1002	/*****************************************************************************/
568		1003
569	void
570	ev_fork_prepare (void)
571	{
572	/* nop */
573	}
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif
588
589	ev_io_stop (&sigev);
590	close (sigpipe [0]);
591	close (sigpipe [1]);
592	pipe (sigpipe);
593	siginit ();
594	}
595
596	/*****************************************************************************/
597
598	static void	1004	static int
		1005	any_pending (EV_P)
		1006	{
		1007	int pri;
		1008
		1009	for (pri = NUMPRI; pri--; )
		1010	if (pendingcnt [pri])
		1011	return 1;
		1012
		1013	return 0;
		1014	}
		1015
		1016	inline void
599	call_pending (void)	1017	call_pending (EV_P)
600	{	1018	{
601	int pri;	1019	int pri;
602		1020
603	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
605	{	1023	{
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		1025
608	if (p->w)	1026	if (expect_true (p->w))
609	{	1027	{
610	p->w->pending = 0;	1028	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
612	}	1030	}
613	}	1031	}
614	}	1032	}
615		1033
616	static void	1034	inline void
617	timers_reify (void)	1035	timers_reify (EV_P)
618	{	1036	{
619	while (timercnt && timers [0]->at <= now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	1038	{
621	struct ev_timer *w = timers [0];	1039	struct ev_timer *w = timers [0];
		1040
		1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		1042
623	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
624	if (w->repeat)	1044	if (w->repeat)
625	{	1045	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1047
627	w->at = now + w->repeat;	1048	((WT)w)->at += w->repeat;
		1049	if (((WT)w)->at < mn_now)
		1050	((WT)w)->at = mn_now;
		1051
628	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
629	}	1053	}
630	else	1054	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		1056
633	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
634	}	1058	}
635	}	1059	}
636		1060
637	static void	1061	#if EV_PERIODICS
		1062	inline void
638	periodics_reify (void)	1063	periodics_reify (EV_P)
639	{	1064	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
641	{	1066	{
642	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
643		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
644	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
645	if (w->interval)	1072	if (w->reschedule_cb)
646	{	1073	{
		1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1076	downheap ((WT *)periodics, periodiccnt, 0);
		1077	}
		1078	else if (w->interval)
		1079	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	1082	downheap ((WT *)periodics, periodiccnt, 0);
650	}	1083	}
651	else	1084	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1086
654	event ((W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
655	}	1088	}
656	}	1089	}
657		1090
658	static void	1091	static void
659	periodics_reschedule (ev_tstamp diff)	1092	periodics_reschedule (EV_P)
660	{	1093	{
661	int i;	1094	int i;
662		1095
663	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
665	{	1098	{
666	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
667		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
668	if (w->interval)	1103	else if (w->interval)
669	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
671
672	if (fabs (diff) >= 1e-4)
673	{
674	ev_periodic_stop (w);
675	ev_periodic_start (w);
676
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}
679	}
680	}	1105	}
681	}
682		1106
683	static int	1107	/* now rebuild the heap */
		1108	for (i = periodiccnt >> 1; i--; )
		1109	downheap ((WT *)periodics, periodiccnt, i);
		1110	}
		1111	#endif
		1112
		1113	inline int
684	time_update_monotonic (void)	1114	time_update_monotonic (EV_P)
685	{	1115	{
686	now = get_clock ();	1116	mn_now = get_clock ();
687		1117
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	1119	{
690	ev_now = now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
691	return 0;	1121	return 0;
692	}	1122	}
693	else	1123	else
694	{	1124	{
695	now_floor = now;	1125	now_floor = mn_now;
696	ev_now = ev_time ();	1126	ev_rt_now = ev_time ();
697	return 1;	1127	return 1;
698	}	1128	}
699	}	1129	}
700		1130
701	static void	1131	inline void
702	time_update (void)	1132	time_update (EV_P)
703	{	1133	{
704	int i;	1134	int i;
705		1135
706	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
708	{	1138	{
709	if (time_update_monotonic ())	1139	if (time_update_monotonic (EV_A))
710	{	1140	{
711	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
712		1142
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	1144	{
715	diff = ev_now - now;	1145	rtmn_diff = ev_rt_now - mn_now;
716		1146
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1148	return; /* all is well */
719		1149
720	ev_now = ev_time ();	1150	ev_rt_now = ev_time ();
721	now = get_clock ();	1151	mn_now = get_clock ();
722	now_floor = now;	1152	now_floor = mn_now;
723	}	1153	}
724		1154
		1155	# if EV_PERIODICS
725	periodics_reschedule (diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
726	/* no timer adjustment, as the monotonic clock doesn't jump */	1158	/* no timer adjustment, as the monotonic clock doesn't jump */
		1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	1160	}
728	}	1161	}
729	else	1162	else
730	#endif	1163	#endif
731	{	1164	{
732	ev_now = ev_time ();	1165	ev_rt_now = ev_time ();
733		1166
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1167	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1168	{
		1169	#if EV_PERIODICS
736	periodics_reschedule (ev_now - now);	1170	periodics_reschedule (EV_A);
		1171	#endif
737		1172
738	/* adjust timers. this is easy, as the offset is the same for all */	1173	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
741	}	1176	}
742		1177
743	now = ev_now;	1178	mn_now = ev_rt_now;
744	}	1179	}
745	}	1180	}
746		1181
747	int ev_loop_done;	1182	void
		1183	ev_ref (EV_P)
		1184	{
		1185	++activecnt;
		1186	}
748		1187
		1188	void
		1189	ev_unref (EV_P)
		1190	{
		1191	--activecnt;
		1192	}
		1193
		1194	static int loop_done;
		1195
		1196	void
749	void ev_loop (int flags)	1197	ev_loop (EV_P_ int flags)
750	{	1198	{
751	double block;	1199	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		1201
754	do	1202	while (activecnt)
755	{	1203	{
756	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
758	{	1206	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1208	call_pending (EV_A);
761	}	1209	}
762		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
763	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
764	fd_reify ();	1216	fd_reify (EV_A);
765		1217
766	/* calculate blocking time */	1218	/* calculate blocking time */
767		1219
768	/* we only need this for !monotonic clockor timers, but as we basically	1220	/* we only need this for !monotonic clock or timers, but as we basically
769	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1224	time_update_monotonic (EV_A);
773	else	1225	else
774	#endif	1226	#endif
775	{	1227	{
776	ev_now = ev_time ();	1228	ev_rt_now = ev_time ();
777	now = ev_now;	1229	mn_now = ev_rt_now;
778	}	1230	}
779		1231
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1232	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	1233	block = 0.;
782	else	1234	else
783	{	1235	{
784	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
785		1237
786	if (timercnt)	1238	if (timercnt)
787	{	1239	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1241	if (block > to) block = to;
790	}	1242	}
791		1243
		1244	#if EV_PERIODICS
792	if (periodiccnt)	1245	if (periodiccnt)
793	{	1246	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
795	if (block > to) block = to;	1248	if (block > to) block = to;
796	}	1249	}
		1250	#endif
797		1251
798	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
799	}	1253	}
800		1254
801	method_poll (block);	1255	method_poll (EV_A_ block);
802		1256
803	/* update ev_now, do magic */	1257	/* update ev_rt_now, do magic */
804	time_update ();	1258	time_update (EV_A);
805		1259
806	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
808	periodics_reify (); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
809		1265
810	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1269
814	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
815	if (checkcnt)	1271	if (expect_false (checkcnt))
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1273
818	call_pending ();	1274	call_pending (EV_A);
819	}
820	while (!ev_loop_done);
821		1275
		1276	if (expect_false (loop_done))
		1277	break;
		1278	}
		1279
822	if (ev_loop_done != 2)	1280	if (loop_done != 2)
823	ev_loop_done = 0;	1281	loop_done = 0;
		1282	}
		1283
		1284	void
		1285	ev_unloop (EV_P_ int how)
		1286	{
		1287	loop_done = how;
824	}	1288	}
825		1289
826	/*****************************************************************************/	1290	/*****************************************************************************/
827		1291
828	static void	1292	inline void
829	wlist_add (WL *head, WL elem)	1293	wlist_add (WL *head, WL elem)
830	{	1294	{
831	elem->next = *head;	1295	elem->next = *head;
832	*head = elem;	1296	*head = elem;
833	}	1297	}
834		1298
835	static void	1299	inline void
836	wlist_del (WL *head, WL elem)	1300	wlist_del (WL *head, WL elem)
837	{	1301	{
838	while (*head)	1302	while (*head)
839	{	1303	{
840	if (*head == elem)	1304	if (*head == elem)
…		…
845		1309
846	head = &(*head)->next;	1310	head = &(*head)->next;
847	}	1311	}
848	}	1312	}
849		1313
850	static void	1314	inline void
851	ev_clear_pending (W w)	1315	ev_clear_pending (EV_P_ W w)
852	{	1316	{
853	if (w->pending)	1317	if (w->pending)
854	{	1318	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1320	w->pending = 0;
857	}	1321	}
858	}	1322	}
859		1323
860	static void	1324	inline void
861	ev_start (W w, int active)	1325	ev_start (EV_P_ W w, int active)
862	{	1326	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1329
866	w->active = active;	1330	w->active = active;
		1331	ev_ref (EV_A);
867	}	1332	}
868		1333
869	static void	1334	inline void
870	ev_stop (W w)	1335	ev_stop (EV_P_ W w)
871	{	1336	{
		1337	ev_unref (EV_A);
872	w->active = 0;	1338	w->active = 0;
873	}	1339	}
874		1340
875	/*****************************************************************************/	1341	/*****************************************************************************/
876		1342
877	void	1343	void
878	ev_io_start (struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
879	{	1345	{
880	int fd = w->fd;	1346	int fd = w->fd;
881		1347
882	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
883	return;	1349	return;
884		1350
885	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
886		1352
887	ev_start ((W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1356
891	fd_change (fd);	1357	fd_change (EV_A_ fd);
892	}	1358	}
893		1359
894	void	1360	void
895	ev_io_stop (struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1362	{
897	ev_clear_pending ((W)w);	1363	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
899	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
900		1368
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
903		1371
904	fd_change (w->fd);	1372	fd_change (EV_A_ w->fd);
905	}	1373	}
906		1374
907	void	1375	void
908	ev_timer_start (struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1377	{
910	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
911	return;	1379	return;
912		1380
913	w->at += now;	1381	((WT)w)->at += mn_now;
914		1382
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1384
917	ev_start ((W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
919	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
921	}
922		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1391	}
		1392
923	void	1393	void
924	ev_timer_stop (struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1395	{
926	ev_clear_pending ((W)w);	1396	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
928	return;	1398	return;
929		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
930	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
931	{	1403	{
932	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1406	}
935		1407
936	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
937		1409
938	ev_stop ((W)w);	1410	ev_stop (EV_A_ (W)w);
939	}	1411	}
940		1412
941	void	1413	void
942	ev_timer_again (struct ev_timer *w)	1414	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1415	{
944	if (ev_is_active (w))	1416	if (ev_is_active (w))
945	{	1417	{
946	if (w->repeat)	1418	if (w->repeat)
947	{	1419	{
948	w->at = now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1422	}
951	else	1423	else
952	ev_timer_stop (w);	1424	ev_timer_stop (EV_A_ w);
953	}	1425	}
954	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
955	ev_timer_start (w);	1429	ev_timer_start (EV_A_ w);
		1430	}
956	}	1431	}
957		1432
		1433	#if EV_PERIODICS
958	void	1434	void
959	ev_periodic_start (struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1436	{
961	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
962	return;	1438	return;
963		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1445	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1447	}
969		1448
970	ev_start ((W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
972	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1455	}
		1456
976	void	1457	void
977	ev_periodic_stop (struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1459	{
979	ev_clear_pending ((W)w);	1460	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
981	return;	1462	return;
982		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
983	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
984	{	1467	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1470	}
988		1471
989	ev_stop ((W)w);	1472	ev_stop (EV_A_ (W)w);
990	}	1473	}
991		1474
992	void	1475	void
		1476	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1477	{
		1478	/* TODO: use adjustheap and recalculation */
		1479	ev_periodic_stop (EV_A_ w);
		1480	ev_periodic_start (EV_A_ w);
		1481	}
		1482	#endif
		1483
		1484	void
		1485	ev_idle_start (EV_P_ struct ev_idle *w)
		1486	{
		1487	if (expect_false (ev_is_active (w)))
		1488	return;
		1489
		1490	ev_start (EV_A_ (W)w, ++idlecnt);
		1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1492	idles [idlecnt - 1] = w;
		1493	}
		1494
		1495	void
		1496	ev_idle_stop (EV_P_ struct ev_idle *w)
		1497	{
		1498	ev_clear_pending (EV_A_ (W)w);
		1499	if (expect_false (!ev_is_active (w)))
		1500	return;
		1501
		1502	idles [((W)w)->active - 1] = idles [--idlecnt];
		1503	ev_stop (EV_A_ (W)w);
		1504	}
		1505
		1506	void
		1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1508	{
		1509	if (expect_false (ev_is_active (w)))
		1510	return;
		1511
		1512	ev_start (EV_A_ (W)w, ++preparecnt);
		1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1514	prepares [preparecnt - 1] = w;
		1515	}
		1516
		1517	void
		1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1519	{
		1520	ev_clear_pending (EV_A_ (W)w);
		1521	if (expect_false (!ev_is_active (w)))
		1522	return;
		1523
		1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1525	ev_stop (EV_A_ (W)w);
		1526	}
		1527
		1528	void
		1529	ev_check_start (EV_P_ struct ev_check *w)
		1530	{
		1531	if (expect_false (ev_is_active (w)))
		1532	return;
		1533
		1534	ev_start (EV_A_ (W)w, ++checkcnt);
		1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1536	checks [checkcnt - 1] = w;
		1537	}
		1538
		1539	void
		1540	ev_check_stop (EV_P_ struct ev_check *w)
		1541	{
		1542	ev_clear_pending (EV_A_ (W)w);
		1543	if (expect_false (!ev_is_active (w)))
		1544	return;
		1545
		1546	checks [((W)w)->active - 1] = checks [--checkcnt];
		1547	ev_stop (EV_A_ (W)w);
		1548	}
		1549
		1550	#ifndef SA_RESTART
		1551	# define SA_RESTART 0
		1552	#endif
		1553
		1554	void
993	ev_signal_start (struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
994	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
995	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
996	return;	1561	return;
997		1562
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1564
1000	ev_start ((W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1568
1004	if (!w->next)	1569	if (!((WL)w)->next)
1005	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1006	struct sigaction sa;	1574	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1011	}	1580	}
1012	}	1581	}
1013		1582
1014	void	1583	void
1015	ev_signal_stop (struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1585	{
1017	ev_clear_pending ((W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1019	return;	1588	return;
1020		1589
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1591	ev_stop (EV_A_ (W)w);
1023		1592
1024	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1026	}	1595	}
1027		1596
1028	void	1597	void
1029	ev_idle_start (struct ev_idle *w)
1030	{
1031	if (ev_is_active (w))
1032	return;
1033
1034	ev_start ((W)w, ++idlecnt);
1035	array_needsize (idles, idlemax, idlecnt, );
1036	idles [idlecnt - 1] = w;
1037	}
1038
1039	void
1040	ev_idle_stop (struct ev_idle *w)
1041	{
1042	ev_clear_pending ((W)w);
1043	if (ev_is_active (w))
1044	return;
1045
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)	1598	ev_child_start (EV_P_ struct ev_child *w)
1096	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1097	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1098	return;	1604	return;
1099		1605
1100	ev_start ((W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}	1608	}
1103		1609
1104	void	1610	void
1105	ev_child_stop (struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1106	{	1612	{
1107	ev_clear_pending ((W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1108	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1109	return;	1615	return;
1110		1616
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1618	ev_stop (EV_A_ (W)w);
1113	}	1619	}
1114		1620
1115	/*****************************************************************************/	1621	/*****************************************************************************/
1116		1622
1117	struct ev_once	1623	struct ev_once
…		…
1121	void (cb)(int revents, void arg);	1627	void (cb)(int revents, void arg);
1122	void *arg;	1628	void *arg;
1123	};	1629	};
1124		1630
1125	static void	1631	static void
1126	once_cb (struct ev_once *once, int revents)	1632	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1633	{
1128	void (cb)(int revents, void arg) = once->cb;	1634	void (cb)(int revents, void arg) = once->cb;
1129	void *arg = once->arg;	1635	void *arg = once->arg;
1130		1636
1131	ev_io_stop (&once->io);	1637	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1639	ev_free (once);
1134		1640
1135	cb (revents, arg);	1641	cb (revents, arg);
1136	}	1642	}
1137		1643
1138	static void	1644	static void
1139	once_cb_io (struct ev_io *w, int revents)	1645	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1646	{
1141	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1647	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1142	}	1648	}
1143		1649
1144	static void	1650	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1652	{
1147	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1653	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1148	}	1654	}
1149		1655
1150	void	1656	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1657	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1152	{	1658	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1154		1660
1155	if (!once)	1661	if (expect_false (!once))
		1662	{
1156	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1663	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1157	else	1664	return;
1158	{	1665	}
		1666
1159	once->cb = cb;	1667	once->cb = cb;
1160	once->arg = arg;	1668	once->arg = arg;
1161		1669
1162	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1671	if (fd >= 0)
1164	{	1672	{
1165	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1674	ev_io_start (EV_A_ &once->io);
1167	}	1675	}
1168		1676
1169	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1678	if (timeout >= 0.)
1171	{	1679	{
1172	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1681	ev_timer_start (EV_A_ &once->to);
1174	}
1175	}
1176	}
1177
1178	/*****************************************************************************/
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{	1682	}
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif
1234
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}	1683	}
1255		1684
		1685	#ifdef __cplusplus
		1686	}
1256	#endif	1687	#endif
1257		1688
1258
1259
1260

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs. Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC