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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 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
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		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>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.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
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#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) */
94	#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) */
95	#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 */
96	/#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 */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
117		210
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
120	/*****************************************************************************/	217	/*****************************************************************************/
121		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
122	typedef struct	267	typedef struct
123	{	268	{
124	struct ev_watcher_list *head;	269	WL head;
125	unsigned char events;	270	unsigned char events;
126	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
127	} ANFD;	275	} ANFD;
128		276
129	typedef struct	277	typedef struct
130	{	278	{
131	W w;	279	W w;
132	int events;	280	int events;
133	} ANPENDING;	281	} ANPENDING;
134		282
135	#ifdef EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
136		284
137	struct ev_loop	285	struct ev_loop
138	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	290	#include "ev_vars.h"
141	};
142	# undef VAR	291	#undef VAR
		292	};
143	# include "ev_wrap.h"	293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
144		297
145	#else	298	#else
146		299
		300	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	302	#include "ev_vars.h"
149	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
150		306
151	#endif	307	#endif
152		308
153	/*****************************************************************************/	309	/*****************************************************************************/
154		310
155	inline ev_tstamp	311	ev_tstamp
156	ev_time (void)	312	ev_time (void)
157	{	313	{
158	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
159	struct timespec ts;	315	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	335	#endif
180		336
181	return ev_time ();	337	return ev_time ();
182	}	338	}
183		339
		340	#if EV_MULTIPLICITY
184	ev_tstamp	341	ev_tstamp
185	ev_now (EV_P)	342	ev_now (EV_P)
186	{	343	{
187	return rt_now;	344	return ev_rt_now;
188	}	345	}
		346	#endif
189		347
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		349
192	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
194	{ \	352	{ \
195	int newcnt = cur; \	353	int newcnt = cur; \
196	do \	354	do \
197	{ \	355	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	357	} \
200	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
201	\	359	\
202	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	362	cur = newcnt; \
205	}	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;
206		375
207	/*****************************************************************************/	376	/*****************************************************************************/
208		377
209	static void	378	static void
210	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
217		386
218	++base;	387	++base;
219	}	388	}
220	}	389	}
221		390
222	static void	391	void
223	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
224	{	393	{
225	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
226	{	397	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	399	return;
229	}	400	}
230		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
231	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	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);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	409	}
236		410
237	static void	411	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	413	{
240	int i;	414	int i;
241		415
242	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
244	}	418	}
245		419
246	static void	420	inline void
247	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
248	{	422	{
249	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	424	struct ev_io *w;
251		425
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	427	{
254	int ev = w->events & events;	428	int ev = w->events & revents;
255		429
256	if (ev)	430	if (ev)
257	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
258	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
259	}	439	}
260		440
261	/*****************************************************************************/	441	/*****************************************************************************/
262		442
263	static void	443	inline void
264	fd_reify (EV_P)	444	fd_reify (EV_P)
265	{	445	{
266	int i;	446	int i;
267		447
268	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
274	int events = 0;	454	int events = 0;
275		455
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	457	events \|= w->events;
278		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
279	anfd->reify = 0;	468	anfd->reify = 0;
280		469
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	471	anfd->events = events;
285	}
286	}	472	}
287		473
288	fdchangecnt = 0;	474	fdchangecnt = 0;
289	}	475	}
290		476
291	static void	477	static void
292	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
293	{	479	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
295	return;	481	return;
296		482
297	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
298		484
299	++fdchangecnt;	485	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
302	}	488	}
303		489
304	static void	490	static void
305	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	493	struct ev_io *w;
308		494
309	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
310	{	496	{
311	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	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
314	}	510	}
315		511
316	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
317	static void	513	static void
318	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
319	{	515	{
320	int fd;	516	int fd;
321		517
322	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	519	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
326	}	522	}
327		523
328	/* 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 */
329	static void	525	static void
330	fd_enomem (EV_P)	526	fd_enomem (EV_P)
331	{	527	{
332	int fd = anfdmax;	528	int fd;
333		529
334	while (fd--)	530	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	531	if (anfds [fd].events)
336	{	532	{
337	close (fd);
338	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
339	return;	534	return;
340	}	535	}
341	}	536	}
342		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
343	/*****************************************************************************/	553	/*****************************************************************************/
344		554
345	static void	555	static void
346	upheap (WT *heap, int k)	556	upheap (WT *heap, int k)
347	{	557	{
348	WT w = heap [k];	558	WT w = heap [k];
349		559
350	while (k && heap [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
351	{	561	{
352	heap [k] = heap [k >> 1];	562	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
354	k >>= 1;	564	k >>= 1;
355	}	565	}
356		566
357	heap [k] = w;	567	heap [k] = w;
358	heap [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
359		569
360	}	570	}
361		571
362	static void	572	static void
363	downheap (WT *heap, int N, int k)	573	downheap (WT *heap, int N, int k)
…		…
373		583
374	if (w->at <= heap [j]->at)	584	if (w->at <= heap [j]->at)
375	break;	585	break;
376		586
377	heap [k] = heap [j];	587	heap [k] = heap [j];
378	heap [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
379	k = j;	589	k = j;
380	}	590	}
381		591
382	heap [k] = w;	592	heap [k] = w;
383	heap [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);
384	}	601	}
385		602
386	/*****************************************************************************/	603	/*****************************************************************************/
387		604
388	typedef struct	605	typedef struct
389	{	606	{
390	struct ev_watcher_list *head;	607	WL head;
391	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
392	} ANSIG;	609	} ANSIG;
393		610
394	static ANSIG *signals;	611	static ANSIG *signals;
395	static int signalmax;	612	static int signalmax;
396		613
397	static int sigpipe [2];	614	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	615	static sig_atomic_t volatile gotsig;
		616	static struct ev_io sigev;
399		617
400	static void	618	static void
401	signals_init (ANSIG *base, int count)	619	signals_init (ANSIG *base, int count)
402	{	620	{
403	while (count--)	621	while (count--)
…		…
410	}	628	}
411		629
412	static void	630	static void
413	sighandler (int signum)	631	sighandler (int signum)
414	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
415	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
416		638
417	if (!gotsig)	639	if (!gotsig)
418	{	640	{
419	int old_errno = errno;	641	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	644	errno = old_errno;
423	}	645	}
424	}	646	}
425		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
426	static void	668	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	670	{
429	struct ev_watcher_list *w;
430	int signum;	671	int signum;
431		672
432	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	674	gotsig = 0;
434		675
435	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
437	{	678	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;	679	}
439		680
440	for (w = signals [signum].head; w; w = w->next)	681	static void
441	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
442	}	683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
		688	fcntl (fd, F_SETFD, FD_CLOEXEC);
		689	fcntl (fd, F_SETFL, O_NONBLOCK);
		690	#endif
443	}	691	}
444		692
445	static void	693	static void
446	siginit (EV_P)	694	siginit (EV_P)
447	{	695	{
448	#ifndef WIN32	696	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		698
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	702	}
461		703
462	/*****************************************************************************/	704	/*****************************************************************************/
463		705
		706	static struct ev_child *childs [PID_HASHSIZE];
		707
464	#ifndef WIN32	708	#ifndef _WIN32
		709
		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
…		…
473	struct ev_child *w;	719	struct ev_child *w;
474		720
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	721	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
477	{	723	{
478	w->priority = sw->priority; /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	725	w->rpid = pid;
480	w->rstatus = status;	726	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	728	}
483	}	729	}
484		730
485	static void	731	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	734	int pid, status;
489		735
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	737	{
492	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		741
495	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}	744	}
498	}	745	}
499		746
500	#endif	747	#endif
501		748
502	/*****************************************************************************/	749	/*****************************************************************************/
503		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
504	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
506	#endif	756	#endif
507	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	758	# include "ev_epoll.c"
509	#endif	759	#endif
510	#if EV_USEV_POLL	760	#if EV_USE_POLL
511	# include "ev_poll.c"	761	# include "ev_poll.c"
512	#endif	762	#endif
513	#if EV_USE_SELECT	763	#if EV_USE_SELECT
514	# include "ev_select.c"	764	# include "ev_select.c"
515	#endif	765	#endif
…		…
528		778
529	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	780	static int
531	enable_secure (void)	781	enable_secure (void)
532	{	782	{
533	#ifdef WIN32	783	#ifdef _WIN32
534	return 0;	784	return 0;
535	#else	785	#else
536	return getuid () != geteuid ()	786	return getuid () != geteuid ()
537	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
538	#endif	788	#endif
539	}	789	}
540		790
541	int	791	unsigned int
542	ev_method (EV_P)	792	ev_supported_backends (void)
543	{	793	{
544	return method;	794	unsigned int flags = 0;
545	}
546		795
547	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	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)
549	{	807	{
550	if (!method)	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)
551	{	841	{
552	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
553	{	843	{
554	struct timespec ts;	844	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	846	have_monotonic = 1;
557	}	847	}
558	#endif	848	#endif
559		849
560	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	851	mn_now = get_clock ();
562	now_floor = mn_now;	852	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
564		854
565	if (pipe (sigpipe))	855	if (!(flags & EVFLAG_NOENV)
566	return 0;	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
		858	flags = atoi (getenv ("LIBEV_FLAGS"));
567		859
568	if (methods == EVMETHOD_AUTO)	860	if (!(flags & 0x0000ffffUL))
569	if (!enable_secure () && getenv ("LIBmethodS"))	861	flags \|= ev_recommended_backends ();
570	methods = atoi (getenv ("LIBmethodS"));
571	else
572	methods = EVMETHOD_ANY;
573		862
574	method = 0;	863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		866	#endif
575	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	869	#endif
578	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	872	#endif
581	#if EV_USEV_POLL	873	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	875	#endif
584	#if EV_USE_SELECT	876	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	878	#endif
587		879
588	if (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))
589	{	1007	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1008	siginit (EV_A);
593		1009
594	#ifndef WIN32	1010	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1015	#endif
600	}	1016	}
		1017	else
		1018	ev_default_loop_ptr = 0;
601	}	1019	}
602		1020
603	return method;	1021	return ev_default_loop_ptr;
604	}	1022	}
605		1023
		1024	void
		1025	ev_default_destroy (void)
		1026	{
606	#ifdef EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
607		1028	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	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;
		1054	}
634		1055
635	/*****************************************************************************/	1056	/*****************************************************************************/
636		1057
637	void
638	ev_fork_prepare (void)
639	{
640	/* nop */
641	}
642
643	void
644	ev_fork_parent (void)
645	{
646	/* nop */
647	}
648
649	void
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}
666
667	/*****************************************************************************/
668
669	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
670	call_pending (EV_P)	1071	call_pending (EV_P)
671	{	1072	{
672	int pri;	1073	int pri;
673		1074
674	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
676	{	1077	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1079
679	if (p->w)	1080	if (expect_true (p->w))
680	{	1081	{
681	p->w->pending = 0;	1082	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
683	}	1084	}
684	}	1085	}
685	}	1086	}
686		1087
687	static void	1088	inline void
688	timers_reify (EV_P)	1089	timers_reify (EV_P)
689	{	1090	{
690	while (timercnt && timers [0]->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	1092	{
692	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)));
693		1096
694	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
695	if (w->repeat)	1098	if (w->repeat)
696	{	1099	{
697	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
698	w->at = mn_now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
699	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
700	}	1107	}
701	else	1108	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1110
704	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1112	}
706	}	1113	}
707		1114
708	static void	1115	#if EV_PERIODICS
		1116	inline void
709	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
710	{	1118	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1120	{
713	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
714		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
715	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
716	if (w->interval)	1126	if (w->reschedule_cb)
717	{	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	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1137	}
722	else	1138	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1140
725	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1142	}
727	}	1143	}
728		1144
729	static void	1145	static void
730	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
736	{	1152	{
737	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
738		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1157	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
752	}	1164	}
		1165	#endif
753		1166
754	inline int	1167	inline int
755	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
756	{	1169	{
757	mn_now = get_clock ();	1170	mn_now = get_clock ();
758		1171
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1173	{
761	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1175	return 0;
763	}	1176	}
764	else	1177	else
765	{	1178	{
766	now_floor = mn_now;	1179	now_floor = mn_now;
767	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
768	return 1;	1181	return 1;
769	}	1182	}
770	}	1183	}
771		1184
772	static void	1185	inline void
773	time_update (EV_P)	1186	time_update (EV_P)
774	{	1187	{
775	int i;	1188	int i;
776		1189
777	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
781	{	1194	{
782	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
783		1196
784	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 */
785	{	1198	{
786	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
787		1200
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1202	return; /* all is well */
790		1203
791	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1205	mn_now = get_clock ();
793	now_floor = mn_now;	1206	now_floor = mn_now;
794	}	1207	}
795		1208
		1209	# if EV_PERIODICS
796	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1214	}
800	}	1215	}
801	else	1216	else
802	#endif	1217	#endif
803	{	1218	{
804	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
805		1220
806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{	1222	{
		1223	#if EV_PERIODICS
808	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
809		1226
810	/* 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 */
811	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1230	}
814		1231
815	mn_now = rt_now;	1232	mn_now = ev_rt_now;
816	}	1233	}
817	}	1234	}
818		1235
819	void	1236	void
820	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
831	static int loop_done;	1248	static int loop_done;
832		1249
833	void	1250	void
834	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
835	{	1252	{
836	double block;
837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
838		1256
839	do	1257	while (activecnt)
840	{	1258	{
841	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
842	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
843	{	1261	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1263	call_pending (EV_A);
846	}	1264	}
847		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
848	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1271	fd_reify (EV_A);
850		1272
851	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
852		1276
853	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
854	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 */
855	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
858	else	1285	else
859	#endif	1286	#endif
860	{	1287	{
861	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1289	mn_now = ev_rt_now;
863	}	1290	}
864		1291
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;
867	else
868	{
869	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
870		1293
871	if (timercnt)	1294	if (timercnt)
872	{	1295	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
874	if (block > to) block = to;	1297	if (block > to) block = to;
875	}	1298	}
876		1299
		1300	#if EV_PERIODICS
877	if (periodiccnt)	1301	if (periodiccnt)
878	{	1302	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	1304	if (block > to) block = to;
881	}	1305	}
		1306	#endif
882		1307
883	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
884	}	1309	}
885		1310
886	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
887		1313
888	/* update rt_now, do magic */	1314	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1315	time_update (EV_A);
890		1316
891	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
893	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
894		1322
895	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1326
899	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
900	if (checkcnt)	1328	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		1330
903	call_pending (EV_A);	1331	call_pending (EV_A);
904	}
905	while (activecnt && !loop_done);
906		1332
907	if (loop_done != 2)	1333	if (expect_false (loop_done))
908	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
909	}	1339	}
910		1340
911	void	1341	void
912	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
913	{	1343	{
…		…
970	void	1400	void
971	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
972	{	1402	{
973	int fd = w->fd;	1403	int fd = w->fd;
974		1404
975	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
976	return;	1406	return;
977		1407
978	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
979		1409
980	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1413
984	fd_change (EV_A_ fd);	1414	fd_change (EV_A_ fd);
985	}	1415	}
986		1416
987	void	1417	void
988	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
989	{	1419	{
990	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
992	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
993		1425
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
996		1428
997	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
998	}	1430	}
999		1431
1000	void	1432	void
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1434	{
1003	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1004	return;	1436	return;
1005		1437
1006	w->at += mn_now;	1438	((WT)w)->at += mn_now;
1007		1439
1008	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.));
1009		1441
1010	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1012	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1448	}
1015		1449
1016	void	1450	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1452	{
1019	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1021	return;	1455	return;
1022		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
1023	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1024	{	1460	{
1025	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1463	}
1028		1464
1029	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1030		1466
1031	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1032	}	1468	}
1033		1469
1034	void	1470	void
…		…
1036	{	1472	{
1037	if (ev_is_active (w))	1473	if (ev_is_active (w))
1038	{	1474	{
1039	if (w->repeat)	1475	if (w->repeat)
1040	{	1476	{
1041	w->at = mn_now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1479	}
1044	else	1480	else
1045	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1046	}	1482	}
1047	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1048	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1049	}	1488	}
1050		1489
		1490	#if EV_PERIODICS
1051	void	1491	void
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1493	{
1054	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1055	return;	1495	return;
1056		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1057	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.));
1058
1059	/* 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 */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
1062		1505
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1512	}
1068		1513
1069	void	1514	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1516	{
1072	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1074	return;	1519	return;
1075		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
1076	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1077	{	1524	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1527	}
1081		1528
		1529	ev_stop (EV_A_ (W)w);
		1530	}
		1531
		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];
1082	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1083	}	1605	}
1084		1606
1085	#ifndef SA_RESTART	1607	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1608	# define SA_RESTART 0
1087	#endif	1609	#endif
1088		1610
1089	void	1611	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1613	{
		1614	#if EV_MULTIPLICITY
		1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1616	#endif
1092	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1093	return;	1618	return;
1094		1619
1095	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));
1096		1621
1097	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1625
1101	if (!w->next)	1626	if (!((WL)w)->next)
1102	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1103	struct sigaction sa;	1631	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1108	}	1637	}
1109	}	1638	}
1110		1639
1111	void	1640	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1113	{	1642	{
1114	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1116	return;	1645	return;
1117		1646
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1120		1649
1121	if (!signals [w->signum - 1].head)	1650	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1651	signal (w->signum, SIG_DFL);
1123	}	1652	}
1124		1653
1125	void	1654	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1656	{
		1657	#if EV_MULTIPLICITY
		1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1659	#endif
1194	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1195	return;	1661	return;
1196		1662
1197	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}	1665	}
1200		1666
1201	void	1667	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1203	{	1669	{
1204	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1206	return;	1672	return;
1207		1673
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1209	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1210	}	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
1211		1715
1212	/*****************************************************************************/	1716	/*****************************************************************************/
1213		1717
1214	struct ev_once	1718	struct ev_once
1215	{	1719	{
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1730	void *arg = once->arg;
1227		1731
1228	ev_io_stop (EV_A_ &once->io);	1732	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1734	ev_free (once);
1231		1735
1232	cb (revents, arg);	1736	cb (revents, arg);
1233	}	1737	}
1234		1738
1235	static void	1739	static void
…		…
1245	}	1749	}
1246		1750
1247	void	1751	void
1248	ev_once (EV_P_ 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)
1249	{	1753	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1755
1252	if (!once)	1756	if (expect_false (!once))
		1757	{
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1759	return;
1255	{	1760	}
		1761
1256	once->cb = cb;	1762	once->cb = cb;
1257	once->arg = arg;	1763	once->arg = arg;
1258		1764
1259	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1766	if (fd >= 0)
1261	{	1767	{
1262	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1264	}	1770	}
1265		1771
1266	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1773	if (timeout >= 0.)
1268	{	1774	{
1269	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1271	}
1272	}
1273	}
1274
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{	1777	}
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	1778	}
1352		1779
		1780	#ifdef __cplusplus
		1781	}
1353	#endif	1782	#endif
1354		1783
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 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 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC