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

Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 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
150	#if WIN32	213	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	214	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	215	#endif
		216
		217	/*****************************************************************************/
		218
		219	static void (syserr_cb)(const char msg);
		220
		221	void ev_set_syserr_cb (void (cb)(const char msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void (alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void (cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
155		264
156	/*****************************************************************************/	265	/*****************************************************************************/
157		266
158	typedef struct	267	typedef struct
159	{	268	{
160	WL head;	269	WL head;
161	unsigned char events;	270	unsigned char events;
162	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
163	} ANFD;	275	} ANFD;
164		276
165	typedef struct	277	typedef struct
166	{	278	{
167	W w;	279	W w;
168	int events;	280	int events;
169	} ANPENDING;	281	} ANPENDING;
170		282
171	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
172		284
173	struct ev_loop	285	struct ev_loop
174	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
175	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
176	# include "ev_vars.h"	290	#include "ev_vars.h"
177	};
178	# undef VAR	291	#undef VAR
		292	};
179	# 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;
180		297
181	#else	298	#else
182		299
		300	ev_tstamp ev_rt_now;
183	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
184	# include "ev_vars.h"	302	#include "ev_vars.h"
185	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
186		306
187	#endif	307	#endif
188		308
189	/*****************************************************************************/	309	/*****************************************************************************/
190		310
191	inline ev_tstamp	311	ev_tstamp
192	ev_time (void)	312	ev_time (void)
193	{	313	{
194	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
195	struct timespec ts;	315	struct timespec ts;
196	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
215	#endif	335	#endif
216		336
217	return ev_time ();	337	return ev_time ();
218	}	338	}
219		339
		340	#if EV_MULTIPLICITY
220	ev_tstamp	341	ev_tstamp
221	ev_now (EV_P)	342	ev_now (EV_P)
222	{	343	{
223	return rt_now;	344	return ev_rt_now;
224	}	345	}
		346	#endif
225		347
226	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
227		349
228	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
229	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
230	{ \	352	{ \
231	int newcnt = cur; \	353	int newcnt = cur; \
232	do \	354	do \
233	{ \	355	{ \
234	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
235	} \	357	} \
236	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
237	\	359	\
238	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
239	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
240	cur = newcnt; \	362	cur = newcnt; \
241	}	363	}
242		364
243	#define array_slim(stem) \	365	#define array_slim(type,stem) \
244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245	{ \	367	{ \
246	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
247	base = realloc (base, sizeof (base) (stem ## max)); \	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
249	}	371	}
250		372
251	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253		375
254	/*****************************************************************************/	376	/*****************************************************************************/
255		377
256	static void	378	static void
257	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
264		386
265	++base;	387	++base;
266	}	388	}
267	}	389	}
268		390
269	static void	391	void
270	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
271	{	393	{
272	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
273	{	397	{
274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
275	return;	399	return;
276	}	400	}
277		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
278	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
279	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);
280	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
281	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
282	}	409	}
283		410
284	static void	411	static void
285	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
286	{	413	{
287	int i;	414	int i;
288		415
289	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
290	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
291	}	418	}
292		419
293	static void	420	inline void
294	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
295	{	422	{
296	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
297	struct ev_io *w;	424	struct ev_io *w;
298		425
299	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)
300	{	427	{
301	int ev = w->events & events;	428	int ev = w->events & revents;
302		429
303	if (ev)	430	if (ev)
304	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
305	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
306	}	439	}
307		440
308	/*****************************************************************************/	441	/*****************************************************************************/
309		442
310	static void	443	inline void
311	fd_reify (EV_P)	444	fd_reify (EV_P)
312	{	445	{
313	int i;	446	int i;
314		447
315	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
321	int events = 0;	454	int events = 0;
322		455
323	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)
324	events \|= w->events;	457	events \|= w->events;
325		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
326	anfd->reify = 0;	468	anfd->reify = 0;
327		469
328	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
329	anfd->events = events;	471	anfd->events = events;
330	}	472	}
331		473
332	fdchangecnt = 0;	474	fdchangecnt = 0;
333	}	475	}
334		476
335	static void	477	static void
336	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
337	{	479	{
338	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
339	return;	481	return;
340		482
341	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
342		484
343	++fdchangecnt;	485	++fdchangecnt;
344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
346	}	488	}
347		489
348	static void	490	static void
349	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
351	struct ev_io *w;	493	struct ev_io *w;
352		494
353	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
354	{	496	{
355	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
356	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);
357	}	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
358	}	510	}
359		511
360	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
361	static void	513	static void
362	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
363	{	515	{
364	int fd;	516	int fd;
365		517
366	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
367	if (anfds [fd].events)	519	if (anfds [fd].events)
368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
369	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
370	}	522	}
371		523
372	/* 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 */
373	static void	525	static void
…		…
381	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
382	return;	534	return;
383	}	535	}
384	}	536	}
385		537
386	/* 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 */
387	static void	539	static void
388	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
389	{	541	{
390	int fd;	542	int fd;
391		543
…		…
439		591
440	heap [k] = w;	592	heap [k] = w;
441	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
442	}	594	}
443		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
		601	}
		602
444	/*****************************************************************************/	603	/*****************************************************************************/
445		604
446	typedef struct	605	typedef struct
447	{	606	{
448	WL head;	607	WL head;
…		…
469	}	628	}
470		629
471	static void	630	static void
472	sighandler (int signum)	631	sighandler (int signum)
473	{	632	{
474	#if WIN32	633	#if _WIN32
475	signal (signum, sighandler);	634	signal (signum, sighandler);
476	#endif	635	#endif
477		636
478	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
479		638
…		…
484	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
485	errno = old_errno;	644	errno = old_errno;
486	}	645	}
487	}	646	}
488		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
489	static void	668	static void
490	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
491	{	670	{
492	WL w;
493	int signum;	671	int signum;
494		672
495	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
496	gotsig = 0;	674	gotsig = 0;
497		675
498	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
499	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
500	{	678	ev_feed_signal_event (EV_A_ signum + 1);
501	signals [signum].gotsig = 0;	679	}
502		680
503	for (w = signals [signum].head; w; w = w->next)	681	static void
504	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
505	}	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
506	}	691	}
507		692
508	static void	693	static void
509	siginit (EV_P)	694	siginit (EV_P)
510	{	695	{
511	#ifndef WIN32	696	fd_intern (sigpipe [0]);
512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515	/* rather than sort out wether we really need nb, set it */
516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518	#endif
519		698
520	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
521	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
522	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
523	}	702	}
524		703
525	/*****************************************************************************/	704	/*****************************************************************************/
526		705
527	#ifndef WIN32
528
529	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
530	static struct ev_signal childev;	710	static struct ev_signal childev;
531		711
532	#ifndef WCONTINUED	712	#ifndef WCONTINUED
533	# define WCONTINUED 0	713	# define WCONTINUED 0
534	#endif	714	#endif
…		…
542	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
543	{	723	{
544	ev_priority (w) = ev_priority (sw); /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
545	w->rpid = pid;	725	w->rpid = pid;
546	w->rstatus = status;	726	w->rstatus = status;
547	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
548	}	728	}
549	}	729	}
550		730
551	static void	731	static void
552	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
554	int pid, status;	734	int pid, status;
555		735
556	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
557	{	737	{
558	/* 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 */
559	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560		741
561	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
562	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 */
563	}	744	}
564	}	745	}
565		746
566	#endif	747	#endif
567		748
568	/*****************************************************************************/	749	/*****************************************************************************/
569		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
570	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
571	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
572	#endif	756	#endif
573	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
574	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
594		778
595	/* 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 */
596	static int	780	static int
597	enable_secure (void)	781	enable_secure (void)
598	{	782	{
599	#ifdef WIN32	783	#ifdef _WIN32
600	return 0;	784	return 0;
601	#else	785	#else
602	return getuid () != geteuid ()	786	return getuid () != geteuid ()
603	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
604	#endif	788	#endif
605	}	789	}
606		790
607	int	791	unsigned int
608	ev_method (EV_P)	792	ev_supported_backends (void)
609	{	793	{
610	return method;	794	unsigned int flags = 0;
611	}
612		795
613	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
614	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)
615	{	807	{
616	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)
617	{	841	{
618	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
619	{	843	{
620	struct timespec ts;	844	struct timespec ts;
621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622	have_monotonic = 1;	846	have_monotonic = 1;
623	}	847	}
624	#endif	848	#endif
625		849
626	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
627	mn_now = get_clock ();	851	mn_now = get_clock ();
628	now_floor = mn_now;	852	now_floor = mn_now;
629	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
630		854
631	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
632	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
633	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
634	else
635	methods = EVMETHOD_ANY;
636		859
637	method = 0;	860	if (!(flags & 0x0000ffffUL))
638	#if EV_USE_WIN32	861	flags \|= ev_recommended_backends ();
639	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);
640	#endif	866	#endif
641	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
643	#endif	869	#endif
644	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
646	#endif	872	#endif
647	#if EV_USE_POLL	873	#if EV_USE_POLL
648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
649	#endif	875	#endif
650	#if EV_USE_SELECT	876	#if EV_USE_SELECT
651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
652	#endif	878	#endif
653	}
654	}
655		879
656	void	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
657	loop_destroy (EV_P)	886	loop_destroy (EV_P)
658	{	887	{
659	int i;	888	int i;
660		889
661	#if EV_USE_WIN32	890	#if EV_USE_PORT
662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
663	#endif	892	#endif
664	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
666	#endif	895	#endif
667	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
669	#endif	898	#endif
670	#if EV_USE_POLL	899	#if EV_USE_POLL
671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
672	#endif	901	#endif
673	#if EV_USE_SELECT	902	#if EV_USE_SELECT
674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
675	#endif	904	#endif
676		905
677	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
678	array_free (pending, [i]);	907	array_free (pending, [i]);
679		908
		909	/* have to use the microsoft-never-gets-it-right macro */
680	array_free (fdchange, );	910	array_free (fdchange, EMPTY0);
681	array_free (timer, );	911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
682	array_free (periodic, );	913	array_free (periodic, EMPTY0);
		914	#endif
683	array_free (idle, );	915	array_free (idle, EMPTY0);
684	array_free (prepare, );	916	array_free (prepare, EMPTY0);
685	array_free (check, );	917	array_free (check, EMPTY0);
686		918
687	method = 0;	919	backend = 0;
688	/TODO/
689	}	920	}
690		921
691	void	922	static void
692	loop_fork (EV_P)	923	loop_fork (EV_P)
693	{	924	{
694	/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
695	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
697	#endif	933	#endif
698	#if EV_USE_KQUEUE	934
699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	935	if (ev_is_active (&sigev))
700	#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;
701	}	951	}
702		952
703	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
704	struct ev_loop *	954	struct ev_loop *
705	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
706	{	956	{
707	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));
708		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
709	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
710		962
711	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
712	return loop;	964	return loop;
713		965
714	return 0;	966	return 0;
715	}	967	}
716		968
717	void	969	void
718	ev_loop_destroy (EV_P)	970	ev_loop_destroy (EV_P)
719	{	971	{
720	loop_destroy (EV_A);	972	loop_destroy (EV_A);
721	free (loop);	973	ev_free (loop);
722	}	974	}
723		975
724	void	976	void
725	ev_loop_fork (EV_P)	977	ev_loop_fork (EV_P)
726	{	978	{
727	loop_fork (EV_A);	979	postfork = 1;
728	}	980	}
729		981
730	#endif	982	#endif
731		983
732	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
733	struct ev_loop default_loop_struct;
734	static struct ev_loop *default_loop;
735
736	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
737	#else	987	#else
738	static int default_loop;
739
740	int	988	int
		989	ev_default_loop (unsigned int flags)
741	#endif	990	#endif
742	ev_default_loop (int methods)
743	{	991	{
744	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
745	if (pipe (sigpipe))	993	if (pipe (sigpipe))
746	return 0;	994	return 0;
747		995
748	if (!default_loop)	996	if (!ev_default_loop_ptr)
749	{	997	{
750	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
751	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752	#else	1000	#else
753	default_loop = 1;	1001	ev_default_loop_ptr = 1;
754	#endif	1002	#endif
755		1003
756	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
757		1005
758	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
759	{	1007	{
760	ev_watcher_init (&sigev, sigcb);
761	ev_set_priority (&sigev, EV_MAXPRI);
762	siginit (EV_A);	1008	siginit (EV_A);
763		1009
764	#ifndef WIN32	1010	#ifndef _WIN32
765	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
766	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
767	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
768	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
769	#endif	1015	#endif
770	}	1016	}
771	else	1017	else
772	default_loop = 0;	1018	ev_default_loop_ptr = 0;
773	}	1019	}
774		1020
775	return default_loop;	1021	return ev_default_loop_ptr;
776	}	1022	}
777		1023
778	void	1024	void
779	ev_default_destroy (void)	1025	ev_default_destroy (void)
780	{	1026	{
781	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
782	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
783	#endif	1029	#endif
784		1030
		1031	#ifndef _WIN32
785	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
786	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
787		1035
788	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
789	ev_io_stop (EV_A_ &sigev);	1037	ev_io_stop (EV_A_ &sigev);
790		1038
791	close (sigpipe [0]); sigpipe [0] = 0;	1039	close (sigpipe [0]); sigpipe [0] = 0;
…		…
796		1044
797	void	1045	void
798	ev_default_fork (void)	1046	ev_default_fork (void)
799	{	1047	{
800	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
801	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
802	#endif	1050	#endif
803		1051
804	loop_fork (EV_A);	1052	if (backend)
805		1053	postfork = 1;
806	ev_io_stop (EV_A_ &sigev);
807	close (sigpipe [0]);
808	close (sigpipe [1]);
809	pipe (sigpipe);
810
811	ev_ref (EV_A); /* signal watcher */
812	siginit (EV_A);
813	}	1054	}
814		1055
815	/*****************************************************************************/	1056	/*****************************************************************************/
816		1057
817	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
818	call_pending (EV_P)	1071	call_pending (EV_P)
819	{	1072	{
820	int pri;	1073	int pri;
821		1074
822	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
823	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
824	{	1077	{
825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826		1079
827	if (p->w)	1080	if (expect_true (p->w))
828	{	1081	{
829	p->w->pending = 0;	1082	p->w->pending = 0;
830	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
831	}	1084	}
832	}	1085	}
833	}	1086	}
834		1087
835	static void	1088	inline void
836	timers_reify (EV_P)	1089	timers_reify (EV_P)
837	{	1090	{
838	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
839	{	1092	{
840	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
843		1096
844	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
845	if (w->repeat)	1098	if (w->repeat)
846	{	1099	{
847	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
848	((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
849	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
850	}	1107	}
851	else	1108	else
852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853		1110
854	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855	}	1112	}
856	}	1113	}
857		1114
858	static void	1115	#if EV_PERIODICS
		1116	inline void
859	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
860	{	1118	{
861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862	{	1120	{
863	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
864		1122
865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
866		1124
867	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
868	if (w->interval)	1126	if (w->reschedule_cb)
869	{	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	{
870	((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;
871	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));
872	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
873	}	1137	}
874	else	1138	else
875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876		1140
877	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878	}	1142	}
879	}	1143	}
880		1144
881	static void	1145	static void
882	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
886	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
887	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
888	{	1152	{
889	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
890		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891	if (w->interval)	1157	else if (w->interval)
892	{
893	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;
894
895	if (fabs (diff) >= 1e-4)
896	{
897	ev_periodic_stop (EV_A_ w);
898	ev_periodic_start (EV_A_ w);
899
900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
901	}
902	}
903	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
904	}	1164	}
		1165	#endif
905		1166
906	inline int	1167	inline int
907	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
908	{	1169	{
909	mn_now = get_clock ();	1170	mn_now = get_clock ();
910		1171
911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912	{	1173	{
913	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
914	return 0;	1175	return 0;
915	}	1176	}
916	else	1177	else
917	{	1178	{
918	now_floor = mn_now;	1179	now_floor = mn_now;
919	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
920	return 1;	1181	return 1;
921	}	1182	}
922	}	1183	}
923		1184
924	static void	1185	inline void
925	time_update (EV_P)	1186	time_update (EV_P)
926	{	1187	{
927	int i;	1188	int i;
928		1189
929	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
933	{	1194	{
934	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
935		1196
936	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 */
937	{	1198	{
938	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
939		1200
940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941	return; /* all is well */	1202	return; /* all is well */
942		1203
943	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
944	mn_now = get_clock ();	1205	mn_now = get_clock ();
945	now_floor = mn_now;	1206	now_floor = mn_now;
946	}	1207	}
947		1208
		1209	# if EV_PERIODICS
948	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
949	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
951	}	1214	}
952	}	1215	}
953	else	1216	else
954	#endif	1217	#endif
955	{	1218	{
956	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
957		1220
958	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))
959	{	1222	{
		1223	#if EV_PERIODICS
960	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
961		1226
962	/* 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 */
963	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
964	((WT)timers [i])->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
965	}	1230	}
966		1231
967	mn_now = rt_now;	1232	mn_now = ev_rt_now;
968	}	1233	}
969	}	1234	}
970		1235
971	void	1236	void
972	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
983	static int loop_done;	1248	static int loop_done;
984		1249
985	void	1250	void
986	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
987	{	1252	{
988	double block;
989	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
990		1256
991	do	1257	while (activecnt)
992	{	1258	{
993	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
994	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
995	{	1261	{
996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997	call_pending (EV_A);	1263	call_pending (EV_A);
998	}	1264	}
999		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
1000	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
1001	fd_reify (EV_A);	1271	fd_reify (EV_A);
1002		1272
1003	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
1004		1276
1005	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1006	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 */
1007	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
1008	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
1009	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
1010	else	1285	else
1011	#endif	1286	#endif
1012	{	1287	{
1013	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
1014	mn_now = rt_now;	1289	mn_now = ev_rt_now;
1015	}	1290	}
1016		1291
1017	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1018	block = 0.;
1019	else
1020	{
1021	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
1022		1293
1023	if (timercnt)	1294	if (timercnt)
1024	{	1295	{
1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1026	if (block > to) block = to;	1297	if (block > to) block = to;
1027	}	1298	}
1028		1299
		1300	#if EV_PERIODICS
1029	if (periodiccnt)	1301	if (periodiccnt)
1030	{	1302	{
1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1032	if (block > to) block = to;	1304	if (block > to) block = to;
1033	}	1305	}
		1306	#endif
1034		1307
1035	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
1036	}	1309	}
1037		1310
1038	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
1039		1313
1040	/* update rt_now, do magic */	1314	/* update ev_rt_now, do magic */
1041	time_update (EV_A);	1315	time_update (EV_A);
1042		1316
1043	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
1044	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
1045	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
1046		1322
1047	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
1048	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1050		1326
1051	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
1052	if (checkcnt)	1328	if (expect_false (checkcnt))
1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054		1330
1055	call_pending (EV_A);	1331	call_pending (EV_A);
1056	}
1057	while (activecnt && !loop_done);
1058		1332
1059	if (loop_done != 2)	1333	if (expect_false (loop_done))
1060	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
1061	}	1339	}
1062		1340
1063	void	1341	void
1064	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
1065	{	1343	{
…		…
1122	void	1400	void
1123	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
1124	{	1402	{
1125	int fd = w->fd;	1403	int fd = w->fd;
1126		1404
1127	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
1128	return;	1406	return;
1129		1407
1130	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
1131		1409
1132	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1135		1413
1136	fd_change (EV_A_ fd);	1414	fd_change (EV_A_ fd);
1137	}	1415	}
1138		1416
1139	void	1417	void
1140	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
1141	{	1419	{
1142	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
1144	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1145		1425
1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1147	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
1148		1428
1149	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
1150	}	1430	}
1151		1431
1152	void	1432	void
1153	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1154	{	1434	{
1155	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1156	return;	1436	return;
1157		1437
1158	((WT)w)->at += mn_now;	1438	((WT)w)->at += mn_now;
1159		1439
1160	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.));
1161		1441
1162	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1163	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1164	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1165	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
1166		1446
1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1168	}	1448	}
1169		1449
1170	void	1450	void
1171	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1172	{	1452	{
1173	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1174	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1175	return;	1455	return;
1176		1456
1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1178		1458
1179	if (((W)w)->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1180	{	1460	{
1181	timers [((W)w)->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183	}	1463	}
1184		1464
1185	((WT)w)->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1186		1466
1187	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1188	}	1468	}
1189		1469
1190	void	1470	void
…		…
1193	if (ev_is_active (w))	1473	if (ev_is_active (w))
1194	{	1474	{
1195	if (w->repeat)	1475	if (w->repeat)
1196	{	1476	{
1197	((WT)w)->at = mn_now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1199	}	1479	}
1200	else	1480	else
1201	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1202	}	1482	}
1203	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1204	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1205	}	1488	}
1206		1489
		1490	#if EV_PERIODICS
1207	void	1491	void
1208	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1209	{	1493	{
1210	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1211	return;	1495	return;
1212		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1213	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.));
1214
1215	/* 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 */
1216	if (w->interval)
1217	((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	}
1218		1505
1219	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1220	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1221	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1222	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
1223		1510
1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1225	}	1512	}
1226		1513
1227	void	1514	void
1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1229	{	1516	{
1230	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1231	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1232	return;	1519	return;
1233		1520
1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1235		1522
1236	if (((W)w)->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1237	{	1524	{
1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1240	}	1527	}
1241		1528
1242	ev_stop (EV_A_ (W)w);	1529	ev_stop (EV_A_ (W)w);
1243	}	1530	}
1244		1531
1245	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
1246	ev_idle_start (EV_P_ struct ev_idle *w)	1542	ev_idle_start (EV_P_ struct ev_idle *w)
1247	{	1543	{
1248	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1249	return;	1545	return;
1250		1546
1251	ev_start (EV_A_ (W)w, ++idlecnt);	1547	ev_start (EV_A_ (W)w, ++idlecnt);
1252	array_needsize (idles, idlemax, idlecnt, );	1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1253	idles [idlecnt - 1] = w;	1549	idles [idlecnt - 1] = w;
1254	}	1550	}
1255		1551
1256	void	1552	void
1257	ev_idle_stop (EV_P_ struct ev_idle *w)	1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1258	{	1554	{
1259	ev_clear_pending (EV_A_ (W)w);	1555	ev_clear_pending (EV_A_ (W)w);
1260	if (ev_is_active (w))	1556	if (expect_false (!ev_is_active (w)))
1261	return;	1557	return;
1262		1558
1263	idles [((W)w)->active - 1] = idles [--idlecnt];	1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1264	ev_stop (EV_A_ (W)w);	1560	ev_stop (EV_A_ (W)w);
1265	}	1561	}
1266		1562
1267	void	1563	void
1268	ev_prepare_start (EV_P_ struct ev_prepare *w)	1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1269	{	1565	{
1270	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1271	return;	1567	return;
1272		1568
1273	ev_start (EV_A_ (W)w, ++preparecnt);	1569	ev_start (EV_A_ (W)w, ++preparecnt);
1274	array_needsize (prepares, preparemax, preparecnt, );	1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1275	prepares [preparecnt - 1] = w;	1571	prepares [preparecnt - 1] = w;
1276	}	1572	}
1277		1573
1278	void	1574	void
1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280	{	1576	{
1281	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1282	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1283	return;	1579	return;
1284		1580
1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1287	}	1583	}
1288		1584
1289	void	1585	void
1290	ev_check_start (EV_P_ struct ev_check *w)	1586	ev_check_start (EV_P_ struct ev_check *w)
1291	{	1587	{
1292	if (ev_is_active (w))	1588	if (expect_false (ev_is_active (w)))
1293	return;	1589	return;
1294		1590
1295	ev_start (EV_A_ (W)w, ++checkcnt);	1591	ev_start (EV_A_ (W)w, ++checkcnt);
1296	array_needsize (checks, checkmax, checkcnt, );	1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1297	checks [checkcnt - 1] = w;	1593	checks [checkcnt - 1] = w;
1298	}	1594	}
1299		1595
1300	void	1596	void
1301	ev_check_stop (EV_P_ struct ev_check *w)	1597	ev_check_stop (EV_P_ struct ev_check *w)
1302	{	1598	{
1303	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1304	if (ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1305	return;	1601	return;
1306		1602
1307	checks [((W)w)->active - 1] = checks [--checkcnt];	1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1308	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1309	}	1605	}
…		…
1314		1610
1315	void	1611	void
1316	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1317	{	1613	{
1318	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1319	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));
1320	#endif	1616	#endif
1321	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1322	return;	1618	return;
1323		1619
1324	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));
1325		1621
1326	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1327	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1329		1625
1330	if (!((WL)w)->next)	1626	if (!((WL)w)->next)
1331	{	1627	{
1332	#if WIN32	1628	#if _WIN32
1333	signal (w->signum, sighandler);	1629	signal (w->signum, sighandler);
1334	#else	1630	#else
1335	struct sigaction sa;	1631	struct sigaction sa;
1336	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1337	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
…		…
1343		1639
1344	void	1640	void
1345	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1346	{	1642	{
1347	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1348	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1349	return;	1645	return;
1350		1646
1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1352	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1353		1649
…		…
1357		1653
1358	void	1654	void
1359	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1360	{	1656	{
1361	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1362	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));
1363	#endif	1659	#endif
1364	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1365	return;	1661	return;
1366		1662
1367	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1369	}	1665	}
1370		1666
1371	void	1667	void
1372	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1373	{	1669	{
1374	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1375	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1376	return;	1672	return;
1377		1673
1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1379	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1380	}	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
1381		1715
1382	/*****************************************************************************/	1716	/*****************************************************************************/
1383		1717
1384	struct ev_once	1718	struct ev_once
1385	{	1719	{
…		…
1395	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1396	void *arg = once->arg;	1730	void *arg = once->arg;
1397		1731
1398	ev_io_stop (EV_A_ &once->io);	1732	ev_io_stop (EV_A_ &once->io);
1399	ev_timer_stop (EV_A_ &once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1400	free (once);	1734	ev_free (once);
1401		1735
1402	cb (revents, arg);	1736	cb (revents, arg);
1403	}	1737	}
1404		1738
1405	static void	1739	static void
…		…
1415	}	1749	}
1416		1750
1417	void	1751	void
1418	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)
1419	{	1753	{
1420	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1421		1755
1422	if (!once)	1756	if (expect_false (!once))
		1757	{
1423	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1424	else	1759	return;
1425	{	1760	}
		1761
1426	once->cb = cb;	1762	once->cb = cb;
1427	once->arg = arg;	1763	once->arg = arg;
1428		1764
1429	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1430	if (fd >= 0)	1766	if (fd >= 0)
1431	{	1767	{
1432	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1433	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1434	}	1770	}
1435		1771
1436	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1437	if (timeout >= 0.)	1773	if (timeout >= 0.)
1438	{	1774	{
1439	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1440	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1441	}
1442	}	1777	}
1443	}	1778	}
1444		1779
		1780	#ifdef __cplusplus
		1781	}
		1782	#endif
		1783

Diff Legend

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

Comparing libev/ev.c (file contents): Revision 1.68 by root, Mon Nov 5 20:19:00 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 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC