[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 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
31	#if EV_USE_CONFIG_H	37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	111	#include <time.h>
50		112
		113	#include <signal.h>
		114
		115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
		118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
		124	# endif
		125	#endif
		126
51	/**/	127	/**/
52		128
53	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
55	#endif	135	#endif
56		136
57	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
59	#endif	139	#endif
60		140
61	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
63	#endif	147	#endif
64		148
65	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
67	#endif	151	#endif
68		152
		153	#ifndef EV_USE_KQUEUE
		154	# define EV_USE_KQUEUE 0
		155	#endif
		156
69	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
70	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
71	#endif	159	#endif
72		160
73	/**/	161	/**/
74		162
75	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
80	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
81	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
82	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
83	#endif	171	#endif
84		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
85	/**/	177	/**/
86		178
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
91		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
92	#include "ev.h"	187	# include "ev.h"
		188	#endif
93		189
94	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	192	# define inline static inline
97	#else	193	#else
98	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
99	# define inline static	195	# define inline static
100	#endif	196	#endif
101		197
…		…
103	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
104		200
105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
107		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
108	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
111		210
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
		217	/*****************************************************************************/
		218
		219	static void (syserr_cb)(const char msg);
		220
		221	void ev_set_syserr_cb (void (cb)(const char msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void (alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void (cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
		267	typedef struct
		268	{
		269	WL head;
		270	unsigned char events;
		271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
		275	} ANFD;
		276
		277	typedef struct
		278	{
		279	W w;
		280	int events;
		281	} ANPENDING;
		282
		283	#if EV_MULTIPLICITY
		284
		285	struct ev_loop
		286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
		289	#define VAR(name,decl) decl;
		290	#include "ev_vars.h"
		291	#undef VAR
		292	};
		293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
		297
		298	#else
		299
113	ev_tstamp ev_now;	300	ev_tstamp ev_rt_now;
114	int ev_method;	301	#define VAR(name,decl) static decl;
		302	#include "ev_vars.h"
		303	#undef VAR
115		304
116	static int have_monotonic; /* runtime */	305	static int ev_default_loop_ptr;
117		306
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	307	#endif
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		308
122	/*****************************************************************************/	309	/*****************************************************************************/
123		310
124	ev_tstamp	311	ev_tstamp
125	ev_time (void)	312	ev_time (void)
…		…
133	gettimeofday (&tv, 0);	320	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	321	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	322	#endif
136	}	323	}
137		324
138	static ev_tstamp	325	inline ev_tstamp
139	get_clock (void)	326	get_clock (void)
140	{	327	{
141	#if EV_USE_MONOTONIC	328	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	329	if (expect_true (have_monotonic))
143	{	330	{
…		…
148	#endif	335	#endif
149		336
150	return ev_time ();	337	return ev_time ();
151	}	338	}
152		339
		340	#if EV_MULTIPLICITY
		341	ev_tstamp
		342	ev_now (EV_P)
		343	{
		344	return ev_rt_now;
		345	}
		346	#endif
		347
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
154		349
155	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
157	{ \	352	{ \
158	int newcnt = cur; \	353	int newcnt = cur; \
159	do \	354	do \
160	{ \	355	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
162	} \	357	} \
163	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
164	\	359	\
165	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
166	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	362	cur = newcnt; \
168	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
169		375
170	/*****************************************************************************/	376	/*****************************************************************************/
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		377
182	static void	378	static void
183	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
184	{	380	{
185	while (count--)	381	while (count--)
…		…
190		386
191	++base;	387	++base;
192	}	388	}
193	}	389	}
194		390
195	typedef struct	391	void
		392	ev_feed_event (EV_P_ void *w, int revents)
196	{	393	{
197	W w;	394	W w_ = (W)w;
198	int events;
199	} ANPENDING;
200		395
201	static ANPENDING *pendings [NUMPRI];	396	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	{	397	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
210	return;	399	return;
211	}	400	}
212		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
213	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
214	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
217	}	409	}
218		410
219	static void	411	static void
220	queue_events (W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	413	{
222	int i;	414	int i;
223		415
224	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
226	}	418	}
227		419
228	static void	420	inline void
229	fd_event (int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
230	{	422	{
231	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	424	struct ev_io *w;
233		425
234	for (w = anfd->head; w; w = w->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	427	{
236	int ev = w->events & events;	428	int ev = w->events & revents;
237		429
238	if (ev)	430	if (ev)
239	event ((W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
240	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
241	}	439	}
242		440
243	/*****************************************************************************/	441	/*****************************************************************************/
244		442
245	static int *fdchanges;	443	inline void
246	static int fdchangemax, fdchangecnt;	444	fd_reify (EV_P)
247
248	static void
249	fd_reify (void)
250	{	445	{
251	int i;	446	int i;
252		447
253	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
254	{	449	{
…		…
256	ANFD *anfd = anfds + fd;	451	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	452	struct ev_io *w;
258		453
259	int events = 0;	454	int events = 0;
260		455
261	for (w = anfd->head; w; w = w->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	457	events \|= w->events;
263		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
264	anfd->reify = 0;	468	anfd->reify = 0;
265		469
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	471	anfd->events = events;
270	}
271	}	472	}
272		473
273	fdchangecnt = 0;	474	fdchangecnt = 0;
274	}	475	}
275		476
276	static void	477	static void
277	fd_change (int fd)	478	fd_change (EV_P_ int fd)
278	{	479	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
280	return;	481	return;
281		482
282	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
283		484
284	++fdchangecnt;	485	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
286	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
287	}	488	}
288		489
289	static void	490	static void
290	fd_kill (int fd)	491	fd_kill (EV_P_ int fd)
291	{	492	{
292	struct ev_io *w;	493	struct ev_io *w;
293		494
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
296	{	496	{
297	ev_io_stop (w);	497	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	499	}
		500	}
		501
		502	inline int
		503	fd_valid (int fd)
		504	{
		505	#ifdef _WIN32
		506	return _get_osfhandle (fd) != -1;
		507	#else
		508	return fcntl (fd, F_GETFD) != -1;
		509	#endif
300	}	510	}
301		511
302	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
303	static void	513	static void
304	fd_ebadf (void)	514	fd_ebadf (EV_P)
305	{	515	{
306	int fd;	516	int fd;
307		517
308	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	519	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
311	fd_kill (fd);	521	fd_kill (EV_A_ fd);
312	}	522	}
313		523
314	/* called on ENOMEM in select/poll to kill some fds and retry */	524	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	525	static void
316	fd_enomem (void)	526	fd_enomem (EV_P)
317	{	527	{
318	int fd = anfdmax;	528	int fd;
319		529
320	while (fd--)	530	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	531	if (anfds [fd].events)
322	{	532	{
323	close (fd);
324	fd_kill (fd);	533	fd_kill (EV_A_ fd);
325	return;	534	return;
326	}	535	}
327	}	536	}
328		537
		538	/* usually called after fork if backend needs to re-arm all fds from scratch */
		539	static void
		540	fd_rearm_all (EV_P)
		541	{
		542	int fd;
		543
		544	/* this should be highly optimised to not do anything but set a flag */
		545	for (fd = 0; fd < anfdmax; ++fd)
		546	if (anfds [fd].events)
		547	{
		548	anfds [fd].events = 0;
		549	fd_change (EV_A_ fd);
		550	}
		551	}
		552
329	/*****************************************************************************/	553	/*****************************************************************************/
330		554
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	555	static void
338	upheap (WT *timers, int k)	556	upheap (WT *heap, int k)
339	{	557	{
340	WT w = timers [k];	558	WT w = heap [k];
341		559
342	while (k && timers [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
343	{	561	{
344	timers [k] = timers [k >> 1];	562	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
346	k >>= 1;	564	k >>= 1;
347	}	565	}
348		566
349	timers [k] = w;	567	heap [k] = w;
350	timers [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
351		569
352	}	570	}
353		571
354	static void	572	static void
355	downheap (WT *timers, int N, int k)	573	downheap (WT *heap, int N, int k)
356	{	574	{
357	WT w = timers [k];	575	WT w = heap [k];
358		576
359	while (k < (N >> 1))	577	while (k < (N >> 1))
360	{	578	{
361	int j = k << 1;	579	int j = k << 1;
362		580
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	582	++j;
365		583
366	if (w->at <= timers [j]->at)	584	if (w->at <= heap [j]->at)
367	break;	585	break;
368		586
369	timers [k] = timers [j];	587	heap [k] = heap [j];
370	timers [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
371	k = j;	589	k = j;
372	}	590	}
373		591
374	timers [k] = w;	592	heap [k] = w;
375	timers [k]->active = k + 1;	593	((W)heap [k])->active = k + 1;
		594	}
		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
376	}	601	}
377		602
378	/*****************************************************************************/	603	/*****************************************************************************/
379		604
380	typedef struct	605	typedef struct
381	{	606	{
382	struct ev_signal *head;	607	WL head;
383	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
384	} ANSIG;	609	} ANSIG;
385		610
386	static ANSIG *signals;	611	static ANSIG *signals;
387	static int signalmax;	612	static int signalmax;
…		…
403	}	628	}
404		629
405	static void	630	static void
406	sighandler (int signum)	631	sighandler (int signum)
407	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
408	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
409		638
410	if (!gotsig)	639	if (!gotsig)
411	{	640	{
		641	int old_errno = errno;
412	gotsig = 1;	642	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
		644	errno = old_errno;
414	}	645	}
415	}	646	}
416		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 \|\| signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
417	static void	668	static void
418	sigcb (struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	670	{
420	struct ev_signal *w;
421	int signum;	671	int signum;
422		672
423	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	674	gotsig = 0;
425		675
426	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
427	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
428	{	678	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	}	679	}
435		680
436	static void	681	static void
437	siginit (void)	682	fd_intern (int fd)
438	{	683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	688	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);	689	fcntl (fd, F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	690	#endif
		691	}
		692
		693	static void
		694	siginit (EV_P)
		695	{
		696	fd_intern (sigpipe [0]);
		697	fd_intern (sigpipe [1]);
445		698
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	700	ev_io_start (EV_A_ &sigev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	702	}
449		703
450	/*****************************************************************************/	704	/*****************************************************************************/
451		705
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];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
464	static struct ev_signal childev;	710	static struct ev_signal childev;
465		711
466	#ifndef WCONTINUED	712	#ifndef WCONTINUED
467	# define WCONTINUED 0	713	# define WCONTINUED 0
468	#endif	714	#endif
469		715
470	static void	716	static void
471	childcb (struct ev_signal *sw, int revents)	717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	718	{
473	struct ev_child *w;	719	struct ev_child *w;
		720
		721	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		722	if (w->pid == pid \|\| !w->pid)
		723	{
		724	ev_priority (w) = ev_priority (sw); /* need to do it now */
		725	w->rpid = pid;
		726	w->rstatus = status;
		727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		728	}
		729	}
		730
		731	static void
		732	childcb (EV_P_ struct ev_signal *sw, int revents)
		733	{
474	int pid, status;	734	int pid, status;
475		735
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	737	{
478	if (w->pid == pid \|\| !w->pid)	738	/* make sure we are called again until all childs have been reaped */
479	{	739	/* we need to do it this way so that the callback gets called before we continue */
480	w->status = status;	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
481	event ((W)w, EV_CHILD);	741
482	}	742	child_reap (EV_A_ sw, pid, pid, status);
		743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
		744	}
483	}	745	}
		746
		747	#endif
484		748
485	/*****************************************************************************/	749	/*****************************************************************************/
486		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
		754	#if EV_USE_KQUEUE
		755	# include "ev_kqueue.c"
		756	#endif
487	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	758	# include "ev_epoll.c"
489	#endif	759	#endif
490	#if EV_USE_POLL	760	#if EV_USE_POLL
491	# include "ev_poll.c"	761	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	774	ev_version_minor (void)
505	{	775	{
506	return EV_VERSION_MINOR;	776	return EV_VERSION_MINOR;
507	}	777	}
508		778
509	/* return true if we are running with elevated privileges and ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	780	static int
511	enable_secure ()	781	enable_secure (void)
512	{	782	{
		783	#ifdef _WIN32
		784	return 0;
		785	#else
513	return getuid () != geteuid ()	786	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
		788	#endif
515	}	789	}
516		790
517	int ev_init (int methods)	791	unsigned int
		792	ev_supported_backends (void)
518	{	793	{
519	if (!ev_method)	794	unsigned int flags = 0;
		795
		796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
		807	{
		808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
520	{	841	{
521	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
522	{	843	{
523	struct timespec ts;	844	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	846	have_monotonic = 1;
526	}	847	}
527	#endif	848	#endif
528		849
529	ev_now = ev_time ();	850	ev_rt_now = ev_time ();
530	now = get_clock ();	851	mn_now = get_clock ();
531	now_floor = now;	852	now_floor = mn_now;
532	diff = ev_now - now;	853	rtmn_diff = ev_rt_now - mn_now;
533		854
534	if (pipe (sigpipe))	855	if (!(flags & EVFLAG_NOENV)
535	return 0;	856	&& !enable_secure ()
536		857	&& getenv ("LIBEV_FLAGS"))
537	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
540	else
541	methods = EVMETHOD_ANY;
542		859
543	ev_method = 0;	860	if (!(flags & 0x0000ffffUL))
		861	flags \|= ev_recommended_backends ();
		862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		866	#endif
		867	#if EV_USE_KQUEUE
		868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		869	#endif
544	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
546	#endif	872	#endif
547	#if EV_USE_POLL	873	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
549	#endif	875	#endif
550	#if EV_USE_SELECT	876	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
552	#endif	878	#endif
553		879
554	if (ev_method)	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
		886	loop_destroy (EV_P)
		887	{
		888	int i;
		889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		898	#endif
		899	#if EV_USE_POLL
		900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		901	#endif
		902	#if EV_USE_SELECT
		903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		904	#endif
		905
		906	for (i = NUMPRI; i--; )
		907	array_free (pending, [i]);
		908
		909	/* have to use the microsoft-never-gets-it-right macro */
		910	array_free (fdchange, EMPTY0);
		911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
		913	array_free (periodic, EMPTY0);
		914	#endif
		915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
		918
		919	backend = 0;
		920	}
		921
		922	static void
		923	loop_fork (EV_P)
		924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
		931	#if EV_USE_EPOLL
		932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		933	#endif
		934
		935	if (ev_is_active (&sigev))
		936	{
		937	/* default loop */
		938
		939	ev_ref (EV_A);
		940	ev_io_stop (EV_A_ &sigev);
		941	close (sigpipe [0]);
		942	close (sigpipe [1]);
		943
		944	while (pipe (sigpipe))
		945	syserr ("(libev) error creating pipe");
		946
		947	siginit (EV_A);
		948	}
		949
		950	postfork = 0;
		951	}
		952
		953	#if EV_MULTIPLICITY
		954	struct ev_loop *
		955	ev_loop_new (unsigned int flags)
		956	{
		957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
		961	loop_init (EV_A_ flags);
		962
		963	if (ev_backend (EV_A))
		964	return loop;
		965
		966	return 0;
		967	}
		968
		969	void
		970	ev_loop_destroy (EV_P)
		971	{
		972	loop_destroy (EV_A);
		973	ev_free (loop);
		974	}
		975
		976	void
		977	ev_loop_fork (EV_P)
		978	{
		979	postfork = 1;
		980	}
		981
		982	#endif
		983
		984	#if EV_MULTIPLICITY
		985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
		987	#else
		988	int
		989	ev_default_loop (unsigned int flags)
		990	#endif
		991	{
		992	if (sigpipe [0] == sigpipe [1])
		993	if (pipe (sigpipe))
		994	return 0;
		995
		996	if (!ev_default_loop_ptr)
		997	{
		998	#if EV_MULTIPLICITY
		999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1000	#else
		1001	ev_default_loop_ptr = 1;
		1002	#endif
		1003
		1004	loop_init (EV_A_ flags);
		1005
		1006	if (ev_backend (EV_A))
555	{	1007	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	1008	siginit (EV_A);
558		1009
		1010	#ifndef _WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
		1012	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	1013	ev_signal_start (EV_A_ &childev);
		1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1015	#endif
561	}	1016	}
		1017	else
		1018	ev_default_loop_ptr = 0;
562	}	1019	}
563		1020
564	return ev_method;	1021	return ev_default_loop_ptr;
		1022	}
		1023
		1024	void
		1025	ev_default_destroy (void)
		1026	{
		1027	#if EV_MULTIPLICITY
		1028	struct ev_loop *loop = ev_default_loop_ptr;
		1029	#endif
		1030
		1031	#ifndef _WIN32
		1032	ev_ref (EV_A); /* child watcher */
		1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
		1035
		1036	ev_ref (EV_A); /* signal watcher */
		1037	ev_io_stop (EV_A_ &sigev);
		1038
		1039	close (sigpipe [0]); sigpipe [0] = 0;
		1040	close (sigpipe [1]); sigpipe [1] = 0;
		1041
		1042	loop_destroy (EV_A);
		1043	}
		1044
		1045	void
		1046	ev_default_fork (void)
		1047	{
		1048	#if EV_MULTIPLICITY
		1049	struct ev_loop *loop = ev_default_loop_ptr;
		1050	#endif
		1051
		1052	if (backend)
		1053	postfork = 1;
565	}	1054	}
566		1055
567	/*****************************************************************************/	1056	/*****************************************************************************/
568		1057
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	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
599	call_pending (void)	1071	call_pending (EV_P)
600	{	1072	{
601	int pri;	1073	int pri;
602		1074
603	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
605	{	1077	{
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		1079
608	if (p->w)	1080	if (expect_true (p->w))
609	{	1081	{
610	p->w->pending = 0;	1082	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
612	}	1084	}
613	}	1085	}
614	}	1086	}
615		1087
616	static void	1088	inline void
617	timers_reify (void)	1089	timers_reify (EV_P)
618	{	1090	{
619	while (timercnt && timers [0]->at <= now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	1092	{
621	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
		1094
		1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		1096
623	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
624	if (w->repeat)	1098	if (w->repeat)
625	{	1099	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
627	w->at = now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
628	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
629	}	1107	}
630	else	1108	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		1110
633	event ((W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
634	}	1112	}
635	}	1113	}
636		1114
637	static void	1115	#if EV_PERIODICS
		1116	inline void
638	periodics_reify (void)	1117	periodics_reify (EV_P)
639	{	1118	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
641	{	1120	{
642	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
643		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
644	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
645	if (w->interval)	1126	if (w->reschedule_cb)
646	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
650	}	1137	}
651	else	1138	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1140
654	event ((W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
655	}	1142	}
656	}	1143	}
657		1144
658	static void	1145	static void
659	periodics_reschedule (ev_tstamp diff)	1146	periodics_reschedule (EV_P)
660	{	1147	{
661	int i;	1148	int i;
662		1149
663	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
665	{	1152	{
666	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
667		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
668	if (w->interval)	1157	else if (w->interval)
669	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
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	}	1159	}
681	}
682		1160
683	static int	1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
		1164	}
		1165	#endif
		1166
		1167	inline int
684	time_update_monotonic (void)	1168	time_update_monotonic (EV_P)
685	{	1169	{
686	now = get_clock ();	1170	mn_now = get_clock ();
687		1171
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	1173	{
690	ev_now = now + diff;	1174	ev_rt_now = rtmn_diff + mn_now;
691	return 0;	1175	return 0;
692	}	1176	}
693	else	1177	else
694	{	1178	{
695	now_floor = now;	1179	now_floor = mn_now;
696	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
697	return 1;	1181	return 1;
698	}	1182	}
699	}	1183	}
700		1184
701	static void	1185	inline void
702	time_update (void)	1186	time_update (EV_P)
703	{	1187	{
704	int i;	1188	int i;
705		1189
706	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	1191	if (expect_true (have_monotonic))
708	{	1192	{
709	if (time_update_monotonic ())	1193	if (time_update_monotonic (EV_A))
710	{	1194	{
711	ev_tstamp odiff = diff;	1195	ev_tstamp odiff = rtmn_diff;
712		1196
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	1198	{
715	diff = ev_now - now;	1199	rtmn_diff = ev_rt_now - mn_now;
716		1200
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1202	return; /* all is well */
719		1203
720	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
721	now = get_clock ();	1205	mn_now = get_clock ();
722	now_floor = now;	1206	now_floor = mn_now;
723	}	1207	}
724		1208
		1209	# if EV_PERIODICS
725	periodics_reschedule (diff - odiff);	1210	periodics_reschedule (EV_A);
		1211	# endif
726	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
		1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	1214	}
728	}	1215	}
729	else	1216	else
730	#endif	1217	#endif
731	{	1218	{
732	ev_now = ev_time ();	1219	ev_rt_now = ev_time ();
733		1220
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1222	{
		1223	#if EV_PERIODICS
736	periodics_reschedule (ev_now - now);	1224	periodics_reschedule (EV_A);
		1225	#endif
737		1226
738	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
741	}	1230	}
742		1231
743	now = ev_now;	1232	mn_now = ev_rt_now;
744	}	1233	}
745	}	1234	}
746		1235
747	int ev_loop_done;	1236	void
		1237	ev_ref (EV_P)
		1238	{
		1239	++activecnt;
		1240	}
748		1241
		1242	void
		1243	ev_unref (EV_P)
		1244	{
		1245	--activecnt;
		1246	}
		1247
		1248	static int loop_done;
		1249
		1250	void
749	void ev_loop (int flags)	1251	ev_loop (EV_P_ int flags)
750	{	1252	{
751	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
753		1256
754	do	1257	while (activecnt)
755	{	1258	{
756	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
758	{	1261	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1263	call_pending (EV_A);
761	}	1264	}
762		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
763	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
764	fd_reify ();	1271	fd_reify (EV_A);
765		1272
766	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
767		1276
768	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
769	always have timers, we just calculate it always */	1278	block = 0.; /* do not block at all */
		1279	else
		1280	{
		1281	/* update time to cancel out callback processing overhead */
770	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1284	time_update_monotonic (EV_A);
773	else	1285	else
774	#endif	1286	#endif
775	{	1287	{
776	ev_now = ev_time ();	1288	ev_rt_now = ev_time ();
777	now = ev_now;	1289	mn_now = ev_rt_now;
778	}	1290	}
779		1291
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;
782	else
783	{
784	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
785		1293
786	if (timercnt)	1294	if (timercnt)
787	{	1295	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
789	if (block > to) block = to;	1297	if (block > to) block = to;
790	}	1298	}
791		1299
		1300	#if EV_PERIODICS
792	if (periodiccnt)	1301	if (periodiccnt)
793	{	1302	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
795	if (block > to) block = to;	1304	if (block > to) block = to;
796	}	1305	}
		1306	#endif
797		1307
798	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
799	}	1309	}
800		1310
801	method_poll (block);	1311	backend_poll (EV_A_ block);
		1312	}
802		1313
803	/* update ev_now, do magic */	1314	/* update ev_rt_now, do magic */
804	time_update ();	1315	time_update (EV_A);
805		1316
806	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
808	periodics_reify (); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
809		1322
810	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1326
814	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
815	if (checkcnt)	1328	if (expect_false (checkcnt))
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1330
818	call_pending ();	1331	call_pending (EV_A);
819	}
820	while (!ev_loop_done);
821		1332
822	if (ev_loop_done != 2)	1333	if (expect_false (loop_done))
		1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
		1339	}
		1340
		1341	void
		1342	ev_unloop (EV_P_ int how)
		1343	{
823	ev_loop_done = 0;	1344	loop_done = how;
824	}	1345	}
825		1346
826	/*****************************************************************************/	1347	/*****************************************************************************/
827		1348
828	static void	1349	inline void
829	wlist_add (WL *head, WL elem)	1350	wlist_add (WL *head, WL elem)
830	{	1351	{
831	elem->next = *head;	1352	elem->next = *head;
832	*head = elem;	1353	*head = elem;
833	}	1354	}
834		1355
835	static void	1356	inline void
836	wlist_del (WL *head, WL elem)	1357	wlist_del (WL *head, WL elem)
837	{	1358	{
838	while (*head)	1359	while (*head)
839	{	1360	{
840	if (*head == elem)	1361	if (*head == elem)
…		…
845		1366
846	head = &(*head)->next;	1367	head = &(*head)->next;
847	}	1368	}
848	}	1369	}
849		1370
850	static void	1371	inline void
851	ev_clear_pending (W w)	1372	ev_clear_pending (EV_P_ W w)
852	{	1373	{
853	if (w->pending)	1374	if (w->pending)
854	{	1375	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1376	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1377	w->pending = 0;
857	}	1378	}
858	}	1379	}
859		1380
860	static void	1381	inline void
861	ev_start (W w, int active)	1382	ev_start (EV_P_ W w, int active)
862	{	1383	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1384	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1385	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1386
866	w->active = active;	1387	w->active = active;
		1388	ev_ref (EV_A);
867	}	1389	}
868		1390
869	static void	1391	inline void
870	ev_stop (W w)	1392	ev_stop (EV_P_ W w)
871	{	1393	{
		1394	ev_unref (EV_A);
872	w->active = 0;	1395	w->active = 0;
873	}	1396	}
874		1397
875	/*****************************************************************************/	1398	/*****************************************************************************/
876		1399
877	void	1400	void
878	ev_io_start (struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
879	{	1402	{
880	int fd = w->fd;	1403	int fd = w->fd;
881		1404
882	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
883	return;	1406	return;
884		1407
885	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
886		1409
887	ev_start ((W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1413
891	fd_change (fd);	1414	fd_change (EV_A_ fd);
892	}	1415	}
893		1416
894	void	1417	void
895	ev_io_stop (struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1419	{
897	ev_clear_pending ((W)w);	1420	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
899	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
900		1425
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1427	ev_stop (EV_A_ (W)w);
903		1428
904	fd_change (w->fd);	1429	fd_change (EV_A_ w->fd);
905	}	1430	}
906		1431
907	void	1432	void
908	ev_timer_start (struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1434	{
910	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
911	return;	1436	return;
912		1437
913	w->at += now;	1438	((WT)w)->at += mn_now;
914		1439
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1441
917	ev_start ((W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
919	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
921	}
922		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1448	}
		1449
923	void	1450	void
924	ev_timer_stop (struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1452	{
926	ev_clear_pending ((W)w);	1453	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
928	return;	1455	return;
929		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
930	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
931	{	1460	{
932	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1463	}
935		1464
936	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
937		1466
938	ev_stop ((W)w);	1467	ev_stop (EV_A_ (W)w);
939	}	1468	}
940		1469
941	void	1470	void
942	ev_timer_again (struct ev_timer *w)	1471	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1472	{
944	if (ev_is_active (w))	1473	if (ev_is_active (w))
945	{	1474	{
946	if (w->repeat)	1475	if (w->repeat)
947	{	1476	{
948	w->at = now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1479	}
951	else	1480	else
952	ev_timer_stop (w);	1481	ev_timer_stop (EV_A_ w);
953	}	1482	}
954	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
955	ev_timer_start (w);	1486	ev_timer_start (EV_A_ w);
		1487	}
956	}	1488	}
957		1489
		1490	#if EV_PERIODICS
958	void	1491	void
959	ev_periodic_start (struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1493	{
961	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
962	return;	1495	return;
963		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1502	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
969		1505
970	ev_start ((W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
972	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1512	}
		1513
976	void	1514	void
977	ev_periodic_stop (struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1516	{
979	ev_clear_pending ((W)w);	1517	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
981	return;	1519	return;
982		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
983	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
984	{	1524	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1527	}
988		1528
989	ev_stop ((W)w);	1529	ev_stop (EV_A_ (W)w);
990	}	1530	}
991		1531
992	void	1532	void
		1533	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1534	{
		1535	/* TODO: use adjustheap and recalculation */
		1536	ev_periodic_stop (EV_A_ w);
		1537	ev_periodic_start (EV_A_ w);
		1538	}
		1539	#endif
		1540
		1541	void
		1542	ev_idle_start (EV_P_ struct ev_idle *w)
		1543	{
		1544	if (expect_false (ev_is_active (w)))
		1545	return;
		1546
		1547	ev_start (EV_A_ (W)w, ++idlecnt);
		1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1549	idles [idlecnt - 1] = w;
		1550	}
		1551
		1552	void
		1553	ev_idle_stop (EV_P_ struct ev_idle *w)
		1554	{
		1555	ev_clear_pending (EV_A_ (W)w);
		1556	if (expect_false (!ev_is_active (w)))
		1557	return;
		1558
		1559	idles [((W)w)->active - 1] = idles [--idlecnt];
		1560	ev_stop (EV_A_ (W)w);
		1561	}
		1562
		1563	void
		1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1565	{
		1566	if (expect_false (ev_is_active (w)))
		1567	return;
		1568
		1569	ev_start (EV_A_ (W)w, ++preparecnt);
		1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1571	prepares [preparecnt - 1] = w;
		1572	}
		1573
		1574	void
		1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1576	{
		1577	ev_clear_pending (EV_A_ (W)w);
		1578	if (expect_false (!ev_is_active (w)))
		1579	return;
		1580
		1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1582	ev_stop (EV_A_ (W)w);
		1583	}
		1584
		1585	void
		1586	ev_check_start (EV_P_ struct ev_check *w)
		1587	{
		1588	if (expect_false (ev_is_active (w)))
		1589	return;
		1590
		1591	ev_start (EV_A_ (W)w, ++checkcnt);
		1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1593	checks [checkcnt - 1] = w;
		1594	}
		1595
		1596	void
		1597	ev_check_stop (EV_P_ struct ev_check *w)
		1598	{
		1599	ev_clear_pending (EV_A_ (W)w);
		1600	if (expect_false (!ev_is_active (w)))
		1601	return;
		1602
		1603	checks [((W)w)->active - 1] = checks [--checkcnt];
		1604	ev_stop (EV_A_ (W)w);
		1605	}
		1606
		1607	#ifndef SA_RESTART
		1608	# define SA_RESTART 0
		1609	#endif
		1610
		1611	void
993	ev_signal_start (struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
994	{	1613	{
		1614	#if EV_MULTIPLICITY
		1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1616	#endif
995	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
996	return;	1618	return;
997		1619
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1621
1000	ev_start ((W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1625
1004	if (!w->next)	1626	if (!((WL)w)->next)
1005	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1006	struct sigaction sa;	1631	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1011	}	1637	}
1012	}	1638	}
1013		1639
1014	void	1640	void
1015	ev_signal_stop (struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1642	{
1017	ev_clear_pending ((W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1019	return;	1645	return;
1020		1646
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1648	ev_stop (EV_A_ (W)w);
1023		1649
1024	if (!signals [w->signum - 1].head)	1650	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1651	signal (w->signum, SIG_DFL);
1026	}	1652	}
1027		1653
1028	void	1654	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)	1655	ev_child_start (EV_P_ struct ev_child *w)
1096	{	1656	{
		1657	#if EV_MULTIPLICITY
		1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1659	#endif
1097	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1098	return;	1661	return;
1099		1662
1100	ev_start ((W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}	1665	}
1103		1666
1104	void	1667	void
1105	ev_child_stop (struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1106	{	1669	{
1107	ev_clear_pending ((W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1108	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1109	return;	1672	return;
1110		1673
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1675	ev_stop (EV_A_ (W)w);
1113	}	1676	}
		1677
		1678	#if EV_MULTIPLICITY
		1679	static void
		1680	embed_cb (EV_P_ struct ev_io *io, int revents)
		1681	{
		1682	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1683
		1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1685	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1686	}
		1687
		1688	void
		1689	ev_embed_start (EV_P_ struct ev_embed *w)
		1690	{
		1691	if (expect_false (ev_is_active (w)))
		1692	return;
		1693
		1694	{
		1695	struct ev_loop *loop = w->loop;
		1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1698	}
		1699
		1700	ev_io_start (EV_A_ &w->io);
		1701	ev_start (EV_A_ (W)w, 1);
		1702	}
		1703
		1704	void
		1705	ev_embed_stop (EV_P_ struct ev_embed *w)
		1706	{
		1707	ev_clear_pending (EV_A_ (W)w);
		1708	if (expect_false (!ev_is_active (w)))
		1709	return;
		1710
		1711	ev_io_stop (EV_A_ &w->io);
		1712	ev_stop (EV_A_ (W)w);
		1713	}
		1714	#endif
1114		1715
1115	/*****************************************************************************/	1716	/*****************************************************************************/
1116		1717
1117	struct ev_once	1718	struct ev_once
1118	{	1719	{
…		…
1121	void (cb)(int revents, void arg);	1722	void (cb)(int revents, void arg);
1122	void *arg;	1723	void *arg;
1123	};	1724	};
1124		1725
1125	static void	1726	static void
1126	once_cb (struct ev_once *once, int revents)	1727	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1728	{
1128	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1129	void *arg = once->arg;	1730	void *arg = once->arg;
1130		1731
1131	ev_io_stop (&once->io);	1732	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1734	ev_free (once);
1134		1735
1135	cb (revents, arg);	1736	cb (revents, arg);
1136	}	1737	}
1137		1738
1138	static void	1739	static void
1139	once_cb_io (struct ev_io *w, int revents)	1740	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1741	{
1141	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1742	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1142	}	1743	}
1143		1744
1144	static void	1745	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1746	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1747	{
1147	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1748	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1148	}	1749	}
1149		1750
1150	void	1751	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1752	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1152	{	1753	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1154		1755
1155	if (!once)	1756	if (expect_false (!once))
		1757	{
1156	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1157	else	1759	return;
1158	{	1760	}
		1761
1159	once->cb = cb;	1762	once->cb = cb;
1160	once->arg = arg;	1763	once->arg = arg;
1161		1764
1162	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1766	if (fd >= 0)
1164	{	1767	{
1165	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1769	ev_io_start (EV_A_ &once->io);
1167	}	1770	}
1168		1771
1169	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1773	if (timeout >= 0.)
1171	{	1774	{
1172	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1776	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	{	1777	}
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	}	1778	}
1255		1779
		1780	#ifdef __cplusplus
		1781	}
1256	#endif	1782	#endif
1257		1783
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 1.135 by root, Sat Nov 24 06:23:27 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 1.135 by root, Sat Nov 24 06:23:27 2007 UTC