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

Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 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
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	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
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	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
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
70	# 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
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# 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
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#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) */
124	#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) */
125	#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 */
126	/#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 */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	192	# define inline static inline
133	#else	193	#else
134	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
135	# define inline static	195	# define inline static
136	#endif	196	#endif
137		197
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
140		200
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
144	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
147		210
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
150	/*****************************************************************************/	217	/*****************************************************************************/
151		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
152	typedef struct	267	typedef struct
153	{	268	{
154	struct ev_watcher_list *head;	269	WL head;
155	unsigned char events;	270	unsigned char events;
156	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
157	} ANFD;	275	} ANFD;
158		276
159	typedef struct	277	typedef struct
160	{	278	{
161	W w;	279	W w;
162	int events;	280	int events;
163	} ANPENDING;	281	} ANPENDING;
164		282
165	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
166		284
167	struct ev_loop	285	struct ev_loop
168	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	290	#include "ev_vars.h"
171	};
172	# undef VAR	291	#undef VAR
		292	};
173	# 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;
174		297
175	#else	298	#else
176		299
		300	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	302	#include "ev_vars.h"
179	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
180		306
181	#endif	307	#endif
182		308
183	/*****************************************************************************/	309	/*****************************************************************************/
184		310
185	inline ev_tstamp	311	ev_tstamp
186	ev_time (void)	312	ev_time (void)
187	{	313	{
188	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
189	struct timespec ts;	315	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
209	#endif	335	#endif
210		336
211	return ev_time ();	337	return ev_time ();
212	}	338	}
213		339
		340	#if EV_MULTIPLICITY
214	ev_tstamp	341	ev_tstamp
215	ev_now (EV_P)	342	ev_now (EV_P)
216	{	343	{
217	return rt_now;	344	return ev_rt_now;
218	}	345	}
		346	#endif
219		347
220	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
221		349
222	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
224	{ \	352	{ \
225	int newcnt = cur; \	353	int newcnt = cur; \
226	do \	354	do \
227	{ \	355	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	357	} \
230	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
231	\	359	\
232	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
233	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	362	cur = newcnt; \
235	}	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;
236		375
237	/*****************************************************************************/	376	/*****************************************************************************/
238		377
239	static void	378	static void
240	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
247		386
248	++base;	387	++base;
249	}	388	}
250	}	389	}
251		390
252	static void	391	void
253	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
254	{	393	{
255	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
256	{	397	{
257	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
258	return;	399	return;
259	}	400	}
260		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
261	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
262	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);
263	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
265	}	409	}
266		410
267	static void	411	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{	413	{
270	int i;	414	int i;
271		415
272	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
274	}	418	}
275		419
276	static void	420	inline void
277	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
278	{	422	{
279	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	424	struct ev_io *w;
281		425
282	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)
283	{	427	{
284	int ev = w->events & events;	428	int ev = w->events & revents;
285		429
286	if (ev)	430	if (ev)
287	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
288	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
289	}	439	}
290		440
291	/*****************************************************************************/	441	/*****************************************************************************/
292		442
293	static void	443	inline void
294	fd_reify (EV_P)	444	fd_reify (EV_P)
295	{	445	{
296	int i;	446	int i;
297		447
298	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
304	int events = 0;	454	int events = 0;
305		455
306	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)
307	events \|= w->events;	457	events \|= w->events;
308		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
309	anfd->reify = 0;	468	anfd->reify = 0;
310		469
311	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
312	anfd->events = events;	471	anfd->events = events;
313	}	472	}
314		473
315	fdchangecnt = 0;	474	fdchangecnt = 0;
316	}	475	}
317		476
318	static void	477	static void
319	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
320	{	479	{
321	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
322	return;	481	return;
323		482
324	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
325		484
326	++fdchangecnt;	485	++fdchangecnt;
327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
328	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
329	}	488	}
330		489
331	static void	490	static void
332	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
334	struct ev_io *w;	493	struct ev_io *w;
335		494
336	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
337	{	496	{
338	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
339	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);
340	}	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
341	}	510	}
342		511
343	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
344	static void	513	static void
345	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
346	{	515	{
347	int fd;	516	int fd;
348		517
349	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
350	if (anfds [fd].events)	519	if (anfds [fd].events)
351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
352	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
353	}	522	}
354		523
355	/* 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 */
356	static void	525	static void
…		…
359	int fd;	528	int fd;
360		529
361	for (fd = anfdmax; fd--; )	530	for (fd = anfdmax; fd--; )
362	if (anfds [fd].events)	531	if (anfds [fd].events)
363	{	532	{
364	close (fd);
365	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
366	return;	534	return;
367	}	535	}
368	}	536	}
369		537
370	/* susually called after fork if method needs to re-arm all fds from scratch */	538	/* usually called after fork if backend needs to re-arm all fds from scratch */
371	static void	539	static void
372	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
373	{	541	{
374	int fd;	542	int fd;
375		543
…		…
423		591
424	heap [k] = w;	592	heap [k] = w;
425	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
426	}	594	}
427		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
		601	}
		602
428	/*****************************************************************************/	603	/*****************************************************************************/
429		604
430	typedef struct	605	typedef struct
431	{	606	{
432	struct ev_watcher_list *head;	607	WL head;
433	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
434	} ANSIG;	609	} ANSIG;
435		610
436	static ANSIG *signals;	611	static ANSIG *signals;
437	static int signalmax;	612	static int signalmax;
…		…
453	}	628	}
454		629
455	static void	630	static void
456	sighandler (int signum)	631	sighandler (int signum)
457	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
458	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
459		638
460	if (!gotsig)	639	if (!gotsig)
461	{	640	{
462	int old_errno = errno;	641	int old_errno = errno;
…		…
464	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
465	errno = old_errno;	644	errno = old_errno;
466	}	645	}
467	}	646	}
468		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
469	static void	668	static void
470	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
471	{	670	{
472	struct ev_watcher_list *w;
473	int signum;	671	int signum;
474		672
475	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
476	gotsig = 0;	674	gotsig = 0;
477		675
478	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
479	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
480	{	678	ev_feed_signal_event (EV_A_ signum + 1);
481	signals [signum].gotsig = 0;	679	}
482		680
483	for (w = signals [signum].head; w; w = w->next)	681	static void
484	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
485	}	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
486	}	691	}
487		692
488	static void	693	static void
489	siginit (EV_P)	694	siginit (EV_P)
490	{	695	{
491	#ifndef WIN32	696	fd_intern (sigpipe [0]);
492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495	/* rather than sort out wether we really need nb, set it */
496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498	#endif
499		698
500	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
501	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
502	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
503	}	702	}
504		703
505	/*****************************************************************************/	704	/*****************************************************************************/
506		705
507	#ifndef WIN32
508
509	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
510	static struct ev_signal childev;	710	static struct ev_signal childev;
511		711
512	#ifndef WCONTINUED	712	#ifndef WCONTINUED
513	# define WCONTINUED 0	713	# define WCONTINUED 0
514	#endif	714	#endif
…		…
522	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
523	{	723	{
524	ev_priority (w) = ev_priority (sw); /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
525	w->rpid = pid;	725	w->rpid = pid;
526	w->rstatus = status;	726	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	728	}
529	}	729	}
530		730
531	static void	731	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
534	int pid, status;	734	int pid, status;
535		735
536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
537	{	737	{
538	/* 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 */
539	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		741
541	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
542	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 */
543	}	744	}
544	}	745	}
545		746
546	#endif	747	#endif
547		748
548	/*****************************************************************************/	749	/*****************************************************************************/
549		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
550	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
552	#endif	756	#endif
553	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
574		778
575	/* 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 */
576	static int	780	static int
577	enable_secure (void)	781	enable_secure (void)
578	{	782	{
579	#ifdef WIN32	783	#ifdef _WIN32
580	return 0;	784	return 0;
581	#else	785	#else
582	return getuid () != geteuid ()	786	return getuid () != geteuid ()
583	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
584	#endif	788	#endif
585	}	789	}
586		790
587	int	791	unsigned int
588	ev_method (EV_P)	792	ev_supported_backends (void)
589	{	793	{
590	return method;	794	unsigned int flags = 0;
591	}
592		795
593	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
594	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)
595	{	807	{
596	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)
597	{	841	{
598	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
599	{	843	{
600	struct timespec ts;	844	struct timespec ts;
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	846	have_monotonic = 1;
603	}	847	}
604	#endif	848	#endif
605		849
606	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	851	mn_now = get_clock ();
608	now_floor = mn_now;	852	now_floor = mn_now;
609	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
610		854
611	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
612	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
613	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
614	else
615	methods = EVMETHOD_ANY;
616		859
617	method = 0;	860	if (!(flags & 0x0000ffffUL))
618	#if EV_USE_WIN32	861	flags \|= ev_recommended_backends ();
619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
620	#endif	866	#endif
621	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623	#endif	869	#endif
624	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626	#endif	872	#endif
627	#if EV_USE_POLL	873	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629	#endif	875	#endif
630	#if EV_USE_SELECT	876	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632	#endif	878	#endif
633	}
634	}
635		879
636	void	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
637	loop_destroy (EV_P)	886	loop_destroy (EV_P)
638	{	887	{
639	#if EV_USE_WIN32	888	int i;
640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
641	#endif	892	#endif
642	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
644	#endif	895	#endif
645	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
647	#endif	898	#endif
648	#if EV_USE_POLL	899	#if EV_USE_POLL
649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
650	#endif	901	#endif
651	#if EV_USE_SELECT	902	#if EV_USE_SELECT
652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
653	#endif	904	#endif
654		905
655	method = 0;	906	for (i = NUMPRI; i--; )
656	/TODO/	907	array_free (pending, [i]);
657	}
658		908
659	void	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
660	loop_fork (EV_P)	923	loop_fork (EV_P)
661	{	924	{
662	/TODO/	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
663	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
665	#endif	933	#endif
666	#if EV_USE_KQUEUE	934
667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	935	if (ev_is_active (&sigev))
668	#endif	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;
669	}	951	}
670		952
671	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
672	struct ev_loop *	954	struct ev_loop *
673	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
674	{	956	{
675	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
676		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
677	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
678		962
679	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
680	return loop;	964	return loop;
681		965
682	return 0;	966	return 0;
683	}	967	}
684		968
685	void	969	void
686	ev_loop_destroy (EV_P)	970	ev_loop_destroy (EV_P)
687	{	971	{
688	loop_destroy (EV_A);	972	loop_destroy (EV_A);
689	free (loop);	973	ev_free (loop);
690	}	974	}
691		975
692	void	976	void
693	ev_loop_fork (EV_P)	977	ev_loop_fork (EV_P)
694	{	978	{
695	loop_fork (EV_A);	979	postfork = 1;
696	}	980	}
697		981
698	#endif	982	#endif
699		983
700	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
701	struct ev_loop default_loop_struct;
702	static struct ev_loop *default_loop;
703
704	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
705	#else	987	#else
706	static int default_loop;
707
708	int	988	int
		989	ev_default_loop (unsigned int flags)
709	#endif	990	#endif
710	ev_default_loop (int methods)
711	{	991	{
712	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
713	if (pipe (sigpipe))	993	if (pipe (sigpipe))
714	return 0;	994	return 0;
715		995
716	if (!default_loop)	996	if (!ev_default_loop_ptr)
717	{	997	{
718	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
719	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
720	#else	1000	#else
721	default_loop = 1;	1001	ev_default_loop_ptr = 1;
722	#endif	1002	#endif
723		1003
724	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
725		1005
726	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
727	{	1007	{
728	ev_watcher_init (&sigev, sigcb);
729	ev_set_priority (&sigev, EV_MAXPRI);
730	siginit (EV_A);	1008	siginit (EV_A);
731		1009
732	#ifndef WIN32	1010	#ifndef _WIN32
733	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
734	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
735	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
736	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
737	#endif	1015	#endif
738	}	1016	}
739	else	1017	else
740	default_loop = 0;	1018	ev_default_loop_ptr = 0;
741	}	1019	}
742		1020
743	return default_loop;	1021	return ev_default_loop_ptr;
744	}	1022	}
745		1023
746	void	1024	void
747	ev_default_destroy (void)	1025	ev_default_destroy (void)
748	{	1026	{
749	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
750	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
751	#endif	1029	#endif
752		1030
		1031	#ifndef _WIN32
753	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
754	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
755		1035
756	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
757	ev_io_stop (EV_A_ &sigev);	1037	ev_io_stop (EV_A_ &sigev);
758		1038
759	close (sigpipe [0]); sigpipe [0] = 0;	1039	close (sigpipe [0]); sigpipe [0] = 0;
…		…
764		1044
765	void	1045	void
766	ev_default_fork (void)	1046	ev_default_fork (void)
767	{	1047	{
768	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
769	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
770	#endif	1050	#endif
771		1051
772	loop_fork (EV_A);	1052	if (backend)
773		1053	postfork = 1;
774	ev_io_stop (EV_A_ &sigev);
775	close (sigpipe [0]);
776	close (sigpipe [1]);
777	pipe (sigpipe);
778
779	ev_ref (EV_A); /* signal watcher */
780	siginit (EV_A);
781	}	1054	}
782		1055
783	/*****************************************************************************/	1056	/*****************************************************************************/
784		1057
785	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
786	call_pending (EV_P)	1071	call_pending (EV_P)
787	{	1072	{
788	int pri;	1073	int pri;
789		1074
790	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
791	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
792	{	1077	{
793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794		1079
795	if (p->w)	1080	if (expect_true (p->w))
796	{	1081	{
797	p->w->pending = 0;	1082	p->w->pending = 0;
798		1083	EV_CB_INVOKE (p->w, p->events);
799	((void (*)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800	}	1084	}
801	}	1085	}
802	}	1086	}
803		1087
804	static void	1088	inline void
805	timers_reify (EV_P)	1089	timers_reify (EV_P)
806	{	1090	{
807	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
808	{	1092	{
809	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
812		1096
813	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
814	if (w->repeat)	1098	if (w->repeat)
815	{	1099	{
816	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
817	((WT)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
818	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
819	}	1107	}
820	else	1108	else
821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822		1110
823	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824	}	1112	}
825	}	1113	}
826		1114
827	static void	1115	#if EV_PERIODICS
		1116	inline void
828	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
829	{	1118	{
830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
831	{	1120	{
832	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
833		1122
834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
835		1124
836	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
837	if (w->interval)	1126	if (w->reschedule_cb)
838	{	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	{
839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
841	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
842	}	1137	}
843	else	1138	else
844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845		1140
846	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847	}	1142	}
848	}	1143	}
849		1144
850	static void	1145	static void
851	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
855	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
856	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
857	{	1152	{
858	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
859		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
860	if (w->interval)	1157	else if (w->interval)
861	{
862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864	if (fabs (diff) >= 1e-4)
865	{
866	ev_periodic_stop (EV_A_ w);
867	ev_periodic_start (EV_A_ w);
868
869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
870	}
871	}
872	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
873	}	1164	}
		1165	#endif
874		1166
875	inline int	1167	inline int
876	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
877	{	1169	{
878	mn_now = get_clock ();	1170	mn_now = get_clock ();
879		1171
880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881	{	1173	{
882	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
883	return 0;	1175	return 0;
884	}	1176	}
885	else	1177	else
886	{	1178	{
887	now_floor = mn_now;	1179	now_floor = mn_now;
888	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
889	return 1;	1181	return 1;
890	}	1182	}
891	}	1183	}
892		1184
893	static void	1185	inline void
894	time_update (EV_P)	1186	time_update (EV_P)
895	{	1187	{
896	int i;	1188	int i;
897		1189
898	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
902	{	1194	{
903	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
904		1196
905	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 */
906	{	1198	{
907	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
908		1200
909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910	return; /* all is well */	1202	return; /* all is well */
911		1203
912	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
913	mn_now = get_clock ();	1205	mn_now = get_clock ();
914	now_floor = mn_now;	1206	now_floor = mn_now;
915	}	1207	}
916		1208
		1209	# if EV_PERIODICS
917	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
918	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920	}	1214	}
921	}	1215	}
922	else	1216	else
923	#endif	1217	#endif
924	{	1218	{
925	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
926		1220
927	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))
928	{	1222	{
		1223	#if EV_PERIODICS
929	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
930		1226
931	/* 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 */
932	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
933	((WT)timers [i])->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
934	}	1230	}
935		1231
936	mn_now = rt_now;	1232	mn_now = ev_rt_now;
937	}	1233	}
938	}	1234	}
939		1235
940	void	1236	void
941	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
952	static int loop_done;	1248	static int loop_done;
953		1249
954	void	1250	void
955	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
956	{	1252	{
957	double block;
958	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
959		1256
960	do	1257	while (activecnt)
961	{	1258	{
962	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
963	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
964	{	1261	{
965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966	call_pending (EV_A);	1263	call_pending (EV_A);
967	}	1264	}
968		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
969	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
970	fd_reify (EV_A);	1271	fd_reify (EV_A);
971		1272
972	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
973		1276
974	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
975	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 */
976	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
977	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
978	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
979	else	1285	else
980	#endif	1286	#endif
981	{	1287	{
982	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
983	mn_now = rt_now;	1289	mn_now = ev_rt_now;
984	}	1290	}
985		1291
986	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
987	block = 0.;
988	else
989	{
990	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
991		1293
992	if (timercnt)	1294	if (timercnt)
993	{	1295	{
994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
995	if (block > to) block = to;	1297	if (block > to) block = to;
996	}	1298	}
997		1299
		1300	#if EV_PERIODICS
998	if (periodiccnt)	1301	if (periodiccnt)
999	{	1302	{
1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1001	if (block > to) block = to;	1304	if (block > to) block = to;
1002	}	1305	}
		1306	#endif
1003		1307
1004	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
1005	}	1309	}
1006		1310
1007	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
1008		1313
1009	/* update rt_now, do magic */	1314	/* update ev_rt_now, do magic */
1010	time_update (EV_A);	1315	time_update (EV_A);
1011		1316
1012	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
1013	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
1014	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
1015		1322
1016	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
1017	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019		1326
1020	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
1021	if (checkcnt)	1328	if (expect_false (checkcnt))
1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1023		1330
1024	call_pending (EV_A);	1331	call_pending (EV_A);
1025	}
1026	while (activecnt && !loop_done);
1027		1332
1028	if (loop_done != 2)	1333	if (expect_false (loop_done))
1029	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
1030	}	1339	}
1031		1340
1032	void	1341	void
1033	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
1034	{	1343	{
…		…
1091	void	1400	void
1092	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
1093	{	1402	{
1094	int fd = w->fd;	1403	int fd = w->fd;
1095		1404
1096	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
1097	return;	1406	return;
1098		1407
1099	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
1100		1409
1101	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104		1413
1105	fd_change (EV_A_ fd);	1414	fd_change (EV_A_ fd);
1106	}	1415	}
1107		1416
1108	void	1417	void
1109	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
1110	{	1419	{
1111	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1112	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
1113	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1114		1425
1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1116	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
1117		1428
1118	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
1119	}	1430	}
1120		1431
1121	void	1432	void
1122	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1123	{	1434	{
1124	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1125	return;	1436	return;
1126		1437
1127	((WT)w)->at += mn_now;	1438	((WT)w)->at += mn_now;
1128		1439
1129	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.));
1130		1441
1131	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1132	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1133	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1134	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
1135		1446
1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137	}	1448	}
1138		1449
1139	void	1450	void
1140	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1141	{	1452	{
1142	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1144	return;	1455	return;
1145		1456
1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1147		1458
1148	if (((W)w)->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1149	{	1460	{
1150	timers [((W)w)->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1463	}
1153		1464
1154	((WT)w)->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1155		1466
1156	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1157	}	1468	}
1158		1469
1159	void	1470	void
…		…
1162	if (ev_is_active (w))	1473	if (ev_is_active (w))
1163	{	1474	{
1164	if (w->repeat)	1475	if (w->repeat)
1165	{	1476	{
1166	((WT)w)->at = mn_now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1168	}	1479	}
1169	else	1480	else
1170	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1171	}	1482	}
1172	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1173	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1174	}	1488	}
1175		1489
		1490	#if EV_PERIODICS
1176	void	1491	void
1177	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1178	{	1493	{
1179	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1180	return;	1495	return;
1181		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1182	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.));
1183
1184	/* 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 */
1185	if (w->interval)
1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
1187		1505
1188	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1189	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1190	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1191	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
1192		1510
1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194	}	1512	}
1195		1513
1196	void	1514	void
1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1198	{	1516	{
1199	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1200	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1201	return;	1519	return;
1202		1520
1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1204		1522
1205	if (((W)w)->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1206	{	1524	{
1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1209	}	1527	}
1210		1528
1211	ev_stop (EV_A_ (W)w);	1529	ev_stop (EV_A_ (W)w);
1212	}	1530	}
1213		1531
1214	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
1215	ev_idle_start (EV_P_ struct ev_idle *w)	1542	ev_idle_start (EV_P_ struct ev_idle *w)
1216	{	1543	{
1217	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1218	return;	1545	return;
1219		1546
1220	ev_start (EV_A_ (W)w, ++idlecnt);	1547	ev_start (EV_A_ (W)w, ++idlecnt);
1221	array_needsize (idles, idlemax, idlecnt, );	1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1222	idles [idlecnt - 1] = w;	1549	idles [idlecnt - 1] = w;
1223	}	1550	}
1224		1551
1225	void	1552	void
1226	ev_idle_stop (EV_P_ struct ev_idle *w)	1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1227	{	1554	{
1228	ev_clear_pending (EV_A_ (W)w);	1555	ev_clear_pending (EV_A_ (W)w);
1229	if (ev_is_active (w))	1556	if (expect_false (!ev_is_active (w)))
1230	return;	1557	return;
1231		1558
1232	idles [((W)w)->active - 1] = idles [--idlecnt];	1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1233	ev_stop (EV_A_ (W)w);	1560	ev_stop (EV_A_ (W)w);
1234	}	1561	}
1235		1562
1236	void	1563	void
1237	ev_prepare_start (EV_P_ struct ev_prepare *w)	1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1238	{	1565	{
1239	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1240	return;	1567	return;
1241		1568
1242	ev_start (EV_A_ (W)w, ++preparecnt);	1569	ev_start (EV_A_ (W)w, ++preparecnt);
1243	array_needsize (prepares, preparemax, preparecnt, );	1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1244	prepares [preparecnt - 1] = w;	1571	prepares [preparecnt - 1] = w;
1245	}	1572	}
1246		1573
1247	void	1574	void
1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249	{	1576	{
1250	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1251	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1252	return;	1579	return;
1253		1580
1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1256	}	1583	}
1257		1584
1258	void	1585	void
1259	ev_check_start (EV_P_ struct ev_check *w)	1586	ev_check_start (EV_P_ struct ev_check *w)
1260	{	1587	{
1261	if (ev_is_active (w))	1588	if (expect_false (ev_is_active (w)))
1262	return;	1589	return;
1263		1590
1264	ev_start (EV_A_ (W)w, ++checkcnt);	1591	ev_start (EV_A_ (W)w, ++checkcnt);
1265	array_needsize (checks, checkmax, checkcnt, );	1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1266	checks [checkcnt - 1] = w;	1593	checks [checkcnt - 1] = w;
1267	}	1594	}
1268		1595
1269	void	1596	void
1270	ev_check_stop (EV_P_ struct ev_check *w)	1597	ev_check_stop (EV_P_ struct ev_check *w)
1271	{	1598	{
1272	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1273	if (ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1274	return;	1601	return;
1275		1602
1276	checks [((W)w)->active - 1] = checks [--checkcnt];	1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1277	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1278	}	1605	}
…		…
1283		1610
1284	void	1611	void
1285	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1286	{	1613	{
1287	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1289	#endif	1616	#endif
1290	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1291	return;	1618	return;
1292		1619
1293	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));
1294		1621
1295	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1296	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298		1625
1299	if (!((WL)w)->next)	1626	if (!((WL)w)->next)
1300	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1301	struct sigaction sa;	1631	struct sigaction sa;
1302	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1303	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1304	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 */
1305	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1306	}	1637	}
1307	}	1638	}
1308		1639
1309	void	1640	void
1310	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1311	{	1642	{
1312	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1313	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1314	return;	1645	return;
1315		1646
1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1317	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1318		1649
…		…
1322		1653
1323	void	1654	void
1324	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1325	{	1656	{
1326	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1327	assert (("child watchers are only supported in the default loop", loop == default_loop));	1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1328	#endif	1659	#endif
1329	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1330	return;	1661	return;
1331		1662
1332	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1334	}	1665	}
1335		1666
1336	void	1667	void
1337	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1338	{	1669	{
1339	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1340	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1341	return;	1672	return;
1342		1673
1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1344	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1345	}	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
1346		1715
1347	/*****************************************************************************/	1716	/*****************************************************************************/
1348		1717
1349	struct ev_once	1718	struct ev_once
1350	{	1719	{
…		…
1360	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1361	void *arg = once->arg;	1730	void *arg = once->arg;
1362		1731
1363	ev_io_stop (EV_A_ &once->io);	1732	ev_io_stop (EV_A_ &once->io);
1364	ev_timer_stop (EV_A_ &once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1365	free (once);	1734	ev_free (once);
1366		1735
1367	cb (revents, arg);	1736	cb (revents, arg);
1368	}	1737	}
1369		1738
1370	static void	1739	static void
…		…
1380	}	1749	}
1381		1750
1382	void	1751	void
1383	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)
1384	{	1753	{
1385	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1386		1755
1387	if (!once)	1756	if (expect_false (!once))
		1757	{
1388	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1389	else	1759	return;
1390	{	1760	}
		1761
1391	once->cb = cb;	1762	once->cb = cb;
1392	once->arg = arg;	1763	once->arg = arg;
1393		1764
1394	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1395	if (fd >= 0)	1766	if (fd >= 0)
1396	{	1767	{
1397	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1398	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1399	}	1770	}
1400		1771
1401	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1402	if (timeout >= 0.)	1773	if (timeout >= 0.)
1403	{	1774	{
1404	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1405	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1406	}
1407	}	1777	}
1408	}	1778	}
1409		1779
		1780	#ifdef __cplusplus
		1781	}
		1782	#endif
		1783

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Comparing libev/ev.c (file contents): Revision 1.64 by root, Sun Nov 4 23:14:11 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 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC