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

Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.174 by root, Tue Dec 11 03:18:33 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
91	/**/	219	/**/
92		220
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97
98	#include "ev.h"
99		224
100	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	227	# define noinline __attribute__ ((noinline))
103	#else	228	#else
104	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
105	# define inline static	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
106	#endif	234	#endif
107		235
108	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
110		245
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
114	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
117		255
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		257
		258	#ifdef _WIN32
		259	# include "ev_win32.c"
		260	#endif
		261
120	/*****************************************************************************/	262	/*****************************************************************************/
121		263
		264	static void (syserr_cb)(const char msg);
		265
		266	void
		267	ev_set_syserr_cb (void (cb)(const char msg))
		268	{
		269	syserr_cb = cb;
		270	}
		271
		272	static void noinline
		273	syserr (const char *msg)
		274	{
		275	if (!msg)
		276	msg = "(libev) system error";
		277
		278	if (syserr_cb)
		279	syserr_cb (msg);
		280	else
		281	{
		282	perror (msg);
		283	abort ();
		284	}
		285	}
		286
		287	static void (alloc)(void *ptr, long size);
		288
		289	void
		290	ev_set_allocator (void (cb)(void *ptr, long size))
		291	{
		292	alloc = cb;
		293	}
		294
		295	inline_speed void *
		296	ev_realloc (void *ptr, long size)
		297	{
		298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		299
		300	if (!ptr && size)
		301	{
		302	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		303	abort ();
		304	}
		305
		306	return ptr;
		307	}
		308
		309	#define ev_malloc(size) ev_realloc (0, (size))
		310	#define ev_free(ptr) ev_realloc ((ptr), 0)
		311
		312	/*****************************************************************************/
		313
122	typedef struct	314	typedef struct
123	{	315	{
124	struct ev_watcher_list *head;	316	WL head;
125	unsigned char events;	317	unsigned char events;
126	unsigned char reify;	318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
127	} ANFD;	322	} ANFD;
128		323
129	typedef struct	324	typedef struct
130	{	325	{
131	W w;	326	W w;
132	int events;	327	int events;
133	} ANPENDING;	328	} ANPENDING;
134		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
135	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
136		338
137	struct ev_loop	339	struct ev_loop
138	{	340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	343	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	344	#include "ev_vars.h"
141	};
142	# undef VAR	345	#undef VAR
		346	};
143	# include "ev_wrap.h"	347	#include "ev_wrap.h"
		348
		349	static struct ev_loop default_loop_struct;
		350	struct ev_loop *ev_default_loop_ptr;
144		351
145	#else	352	#else
146		353
		354	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	355	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	356	#include "ev_vars.h"
149	# undef VAR	357	#undef VAR
		358
		359	static int ev_default_loop_ptr;
150		360
151	#endif	361	#endif
152		362
153	/*****************************************************************************/	363	/*****************************************************************************/
154		364
155	inline ev_tstamp	365	ev_tstamp
156	ev_time (void)	366	ev_time (void)
157	{	367	{
158	#if EV_USE_REALTIME	368	#if EV_USE_REALTIME
159	struct timespec ts;	369	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	370	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	376	#endif
167	}	377	}
168		378
169	inline ev_tstamp	379	ev_tstamp inline_size
170	get_clock (void)	380	get_clock (void)
171	{	381	{
172	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
174	{	384	{
…		…
179	#endif	389	#endif
180		390
181	return ev_time ();	391	return ev_time ();
182	}	392	}
183		393
		394	#if EV_MULTIPLICITY
184	ev_tstamp	395	ev_tstamp
185	ev_now (EV_P)	396	ev_now (EV_P)
186	{	397	{
187	return rt_now;	398	return ev_rt_now;
188	}	399	}
		400	#endif
189		401
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
191		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		416	ncur = ncur - sizeof (void ) 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void base, int cur, int cnt)
		425	{
		426	cur = array_nextsize (elem, cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
		429
192	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
194	{ \	432	{ \
195	int newcnt = cur; \	433	int ocur_ = (cur); \
196	do \	434	(base) = (type *)array_realloc \
197	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
198	newcnt = array_roundsize (base, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
199	} \	437	}
200	while ((cnt) > newcnt); \	438
		439	#if 0
		440	#define array_slim(type,stem) \
		441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201	\	442	{ \
202	base = realloc (base, sizeof (base) (newcnt)); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
203	init (base + cur, newcnt - cur); \	444	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
204	cur = newcnt; \	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
205	}	446	}
		447	#endif
		448
		449	#define array_free(stem, idx) \
		450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		451
207	/*****************************************************************************/	452	/*****************************************************************************/
208		453
209	static void	454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
		456	{
		457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
		459
		460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events \|= revents;
		462	else
		463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
		467	pendings [pri][w_->pending - 1].events = revents;
		468	}
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
210	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
211	{	484	{
212	while (count--)	485	while (count--)
213	{	486	{
214	base->head = 0;	487	base->head = 0;
…		…
217		490
218	++base;	491	++base;
219	}	492	}
220	}	493	}
221		494
222	static void	495	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	496	fd_event (EV_P_ int fd, int revents)
248	{	497	{
249	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	499	ev_io *w;
251		500
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	501	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
253	{	502	{
254	int ev = w->events & events;	503	int ev = w->events & revents;
255		504
256	if (ev)	505	if (ev)
257	event (EV_A_ (W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
258	}	507	}
259	}	508	}
260		509
261	/*****************************************************************************/	510	void
		511	ev_feed_fd_event (EV_P_ int fd, int revents)
		512	{
		513	if (fd >= 0 && fd < anfdmax)
		514	fd_event (EV_A_ fd, revents);
		515	}
262		516
263	static void	517	void inline_size
264	fd_reify (EV_P)	518	fd_reify (EV_P)
265	{	519	{
266	int i;	520	int i;
267		521
268	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
269	{	523	{
270	int fd = fdchanges [i];	524	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	526	ev_io *w;
273		527
274	int events = 0;	528	int events = 0;
275		529
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	530	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
277	events \|= w->events;	531	events \|= w->events;
278		532
		533	#if EV_SELECT_IS_WINSOCKET
		534	if (events)
		535	{
		536	unsigned long argp;
		537	anfd->handle = _get_osfhandle (fd);
		538	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		539	}
		540	#endif
		541
279	anfd->reify = 0;	542	anfd->reify = 0;
280		543
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	545	anfd->events = events;
285	}
286	}	546	}
287		547
288	fdchangecnt = 0;	548	fdchangecnt = 0;
289	}	549	}
290		550
291	static void	551	void inline_size
292	fd_change (EV_P_ int fd)	552	fd_change (EV_P_ int fd)
293	{	553	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	554	if (expect_false (anfds [fd].reify))
295	return;	555	return;
296		556
297	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
298		558
299	++fdchangecnt;	559	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
302	}	562	}
303		563
304	static void	564	void inline_speed
305	fd_kill (EV_P_ int fd)	565	fd_kill (EV_P_ int fd)
306	{	566	{
307	struct ev_io *w;	567	ev_io *w;
308		568
309	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
310	{	570	{
311	ev_io_stop (EV_A_ w);	571	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	572	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	573	}
		574	}
		575
		576	int inline_size
		577	fd_valid (int fd)
		578	{
		579	#ifdef _WIN32
		580	return _get_osfhandle (fd) != -1;
		581	#else
		582	return fcntl (fd, F_GETFD) != -1;
		583	#endif
314	}	584	}
315		585
316	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
317	static void	587	static void noinline
318	fd_ebadf (EV_P)	588	fd_ebadf (EV_P)
319	{	589	{
320	int fd;	590	int fd;
321		591
322	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	593	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	595	fd_kill (EV_A_ fd);
326	}	596	}
327		597
328	/* called on ENOMEM in select/poll to kill some fds and retry */	598	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	599	static void noinline
330	fd_enomem (EV_P)	600	fd_enomem (EV_P)
331	{	601	{
332	int fd = anfdmax;	602	int fd;
333		603
334	while (fd--)	604	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	605	if (anfds [fd].events)
336	{	606	{
337	close (fd);
338	fd_kill (EV_A_ fd);	607	fd_kill (EV_A_ fd);
339	return;	608	return;
340	}	609	}
341	}	610	}
342		611
		612	/* usually called after fork if backend needs to re-arm all fds from scratch */
		613	static void noinline
		614	fd_rearm_all (EV_P)
		615	{
		616	int fd;
		617
		618	for (fd = 0; fd < anfdmax; ++fd)
		619	if (anfds [fd].events)
		620	{
		621	anfds [fd].events = 0;
		622	fd_change (EV_A_ fd);
		623	}
		624	}
		625
343	/*****************************************************************************/	626	/*****************************************************************************/
344		627
345	static void	628	void inline_speed
346	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
347	{	630	{
348	WT w = heap [k];	631	WT w = heap [k];
349		632
350	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
351	{	634	{
352	heap [k] = heap [k >> 1];	635	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	636	((W)heap [k])->active = k + 1;
354	k >>= 1;	637	k >>= 1;
355	}	638	}
356		639
357	heap [k] = w;	640	heap [k] = w;
358	heap [k]->active = k + 1;	641	((W)heap [k])->active = k + 1;
359		642
360	}	643	}
361		644
362	static void	645	void inline_speed
363	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
364	{	647	{
365	WT w = heap [k];	648	WT w = heap [k];
366		649
367	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
373		656
374	if (w->at <= heap [j]->at)	657	if (w->at <= heap [j]->at)
375	break;	658	break;
376		659
377	heap [k] = heap [j];	660	heap [k] = heap [j];
378	heap [k]->active = k + 1;	661	((W)heap [k])->active = k + 1;
379	k = j;	662	k = j;
380	}	663	}
381		664
382	heap [k] = w;	665	heap [k] = w;
383	heap [k]->active = k + 1;	666	((W)heap [k])->active = k + 1;
		667	}
		668
		669	void inline_size
		670	adjustheap (WT *heap, int N, int k)
		671	{
		672	upheap (heap, k);
		673	downheap (heap, N, k);
384	}	674	}
385		675
386	/*****************************************************************************/	676	/*****************************************************************************/
387		677
388	typedef struct	678	typedef struct
389	{	679	{
390	struct ev_watcher_list *head;	680	WL head;
391	sig_atomic_t volatile gotsig;	681	sig_atomic_t volatile gotsig;
392	} ANSIG;	682	} ANSIG;
393		683
394	static ANSIG *signals;	684	static ANSIG *signals;
395	static int signalmax;	685	static int signalmax;
396		686
397	static int sigpipe [2];	687	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
		689	static ev_io sigev;
399		690
400	static void	691	void inline_size
401	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
402	{	693	{
403	while (count--)	694	while (count--)
404	{	695	{
405	base->head = 0;	696	base->head = 0;
…		…
410	}	701	}
411		702
412	static void	703	static void
413	sighandler (int signum)	704	sighandler (int signum)
414	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
415	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
416		711
417	if (!gotsig)	712	if (!gotsig)
418	{	713	{
419	int old_errno = errno;	714	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	717	errno = old_errno;
423	}	718	}
424	}	719	}
425		720
		721	void noinline
		722	ev_feed_signal_event (EV_P_ int signum)
		723	{
		724	WL w;
		725
		726	#if EV_MULTIPLICITY
		727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		728	#endif
		729
		730	--signum;
		731
		732	if (signum < 0 \|\| signum >= signalmax)
		733	return;
		734
		735	signals [signum].gotsig = 0;
		736
		737	for (w = signals [signum].head; w; w = w->next)
		738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		739	}
		740
426	static void	741	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
428	{	743	{
429	struct ev_watcher_list *w;
430	int signum;	744	int signum;
431		745
432	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	747	gotsig = 0;
434		748
435	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
437	{	751	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	752	}
444		753
445	static void	754	void inline_speed
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
446	siginit (EV_P)	767	siginit (EV_P)
447	{	768	{
448	#ifndef WIN32	769	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		771
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	775	}
461		776
462	/*****************************************************************************/	777	/*****************************************************************************/
463		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
464	#ifndef WIN32	781	#ifndef _WIN32
		782
		783	static ev_signal childev;
		784
		785	void inline_speed
		786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		787	{
		788	ev_child *w;
		789
		790	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		791	if (w->pid == pid \|\| !w->pid)
		792	{
		793	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
		794	w->rpid = pid;
		795	w->rstatus = status;
		796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		797	}
		798	}
465		799
466	#ifndef WCONTINUED	800	#ifndef WCONTINUED
467	# define WCONTINUED 0	801	# define WCONTINUED 0
468	#endif	802	#endif
469		803
470	static void	804	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it now */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
487	{	806	{
488	int pid, status;	807	int pid, status;
489		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	811	if (!WCONTINUED
		812	\|\| errno != EINVAL
		813	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		814	return;
		815
492	/* make sure we are called again until all childs have been reaped */	816	/* make sure we are called again until all childs have been reaped */
		817	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		819
495	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}
498	}	823	}
499		824
500	#endif	825	#endif
501		826
502	/*****************************************************************************/	827	/*****************************************************************************/
503		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
504	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
506	#endif	834	#endif
507	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	836	# include "ev_epoll.c"
509	#endif	837	#endif
510	#if EV_USEV_POLL	838	#if EV_USE_POLL
511	# include "ev_poll.c"	839	# include "ev_poll.c"
512	#endif	840	#endif
513	#if EV_USE_SELECT	841	#if EV_USE_SELECT
514	# include "ev_select.c"	842	# include "ev_select.c"
515	#endif	843	#endif
…		…
525	{	853	{
526	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
527	}	855	}
528		856
529	/* return true if we are running with elevated privileges and should ignore env variables */	857	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	858	int inline_size
531	enable_secure (void)	859	enable_secure (void)
532	{	860	{
533	#ifdef WIN32	861	#ifdef _WIN32
534	return 0;	862	return 0;
535	#else	863	#else
536	return getuid () != geteuid ()	864	return getuid () != geteuid ()
537	\|\| getgid () != getegid ();	865	\|\| getgid () != getegid ();
538	#endif	866	#endif
539	}	867	}
540		868
541	int	869	unsigned int
542	ev_method (EV_P)	870	ev_supported_backends (void)
543	{	871	{
544	return method;	872	unsigned int flags = 0;
545	}
546		873
547	inline int	874	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	875	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		876	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		877	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		878	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		879
		880	return flags;
		881	}
		882
		883	unsigned int
		884	ev_recommended_backends (void)
549	{	885	{
550	if (!method)	886	unsigned int flags = ev_supported_backends ();
		887
		888	#ifndef __NetBSD__
		889	/* kqueue is borked on everything but netbsd apparently */
		890	/* it usually doesn't work correctly on anything but sockets and pipes */
		891	flags &= ~EVBACKEND_KQUEUE;
		892	#endif
		893	#ifdef __APPLE__
		894	// flags &= ~EVBACKEND_KQUEUE; for documentation
		895	flags &= ~EVBACKEND_POLL;
		896	#endif
		897
		898	return flags;
		899	}
		900
		901	unsigned int
		902	ev_embeddable_backends (void)
		903	{
		904	return EVBACKEND_EPOLL
		905	\| EVBACKEND_KQUEUE
		906	\| EVBACKEND_PORT;
		907	}
		908
		909	unsigned int
		910	ev_backend (EV_P)
		911	{
		912	return backend;
		913	}
		914
		915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
		921	static void noinline
		922	loop_init (EV_P_ unsigned int flags)
		923	{
		924	if (!backend)
551	{	925	{
552	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
553	{	927	{
554	struct timespec ts;	928	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	930	have_monotonic = 1;
557	}	931	}
558	#endif	932	#endif
559		933
560	rt_now = ev_time ();	934	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	935	mn_now = get_clock ();
562	now_floor = mn_now;	936	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
564		938
565	if (pipe (sigpipe))	939	/* pid check not overridable via env */
566	return 0;	940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
567		944
568	if (methods == EVMETHOD_AUTO)	945	if (!(flags & EVFLAG_NOENV)
569	if (!enable_secure () && getenv ("LIBmethodS"))	946	&& !enable_secure ()
570	methods = atoi (getenv ("LIBmethodS"));	947	&& getenv ("LIBEV_FLAGS"))
571	else	948	flags = atoi (getenv ("LIBEV_FLAGS"));
572	methods = EVMETHOD_ANY;
573		949
574	method = 0;	950	if (!(flags & 0x0000ffffUL))
		951	flags \|= ev_recommended_backends ();
		952
		953	backend = 0;
		954	backend_fd = -1;
		955	#if EV_USE_INOTIFY
		956	fs_fd = -2;
		957	#endif
		958
		959	#if EV_USE_PORT
		960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		961	#endif
575	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	964	#endif
578	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	967	#endif
581	#if EV_USEV_POLL	968	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	970	#endif
584	#if EV_USE_SELECT	971	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	973	#endif
587		974
588	if (method)	975	ev_init (&sigev, sigcb);
		976	ev_set_priority (&sigev, EV_MAXPRI);
		977	}
		978	}
		979
		980	static void noinline
		981	loop_destroy (EV_P)
		982	{
		983	int i;
		984
		985	#if EV_USE_INOTIFY
		986	if (fs_fd >= 0)
		987	close (fs_fd);
		988	#endif
		989
		990	if (backend_fd >= 0)
		991	close (backend_fd);
		992
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		998	#endif
		999	#if EV_USE_EPOLL
		1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1001	#endif
		1002	#if EV_USE_POLL
		1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1004	#endif
		1005	#if EV_USE_SELECT
		1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1007	#endif
		1008
		1009	for (i = NUMPRI; i--; )
		1010	{
		1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
		1016
		1017	/* have to use the microsoft-never-gets-it-right macro */
		1018	array_free (fdchange, EMPTY);
		1019	array_free (timer, EMPTY);
		1020	#if EV_PERIODIC_ENABLE
		1021	array_free (periodic, EMPTY);
		1022	#endif
		1023	array_free (prepare, EMPTY);
		1024	array_free (check, EMPTY);
		1025
		1026	backend = 0;
		1027	}
		1028
		1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
		1032	loop_fork (EV_P)
		1033	{
		1034	#if EV_USE_PORT
		1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1036	#endif
		1037	#if EV_USE_KQUEUE
		1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1039	#endif
		1040	#if EV_USE_EPOLL
		1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1042	#endif
		1043	#if EV_USE_INOTIFY
		1044	infy_fork (EV_A);
		1045	#endif
		1046
		1047	if (ev_is_active (&sigev))
		1048	{
		1049	/* default loop */
		1050
		1051	ev_ref (EV_A);
		1052	ev_io_stop (EV_A_ &sigev);
		1053	close (sigpipe [0]);
		1054	close (sigpipe [1]);
		1055
		1056	while (pipe (sigpipe))
		1057	syserr ("(libev) error creating pipe");
		1058
		1059	siginit (EV_A);
		1060	}
		1061
		1062	postfork = 0;
		1063	}
		1064
		1065	#if EV_MULTIPLICITY
		1066	struct ev_loop *
		1067	ev_loop_new (unsigned int flags)
		1068	{
		1069	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		1070
		1071	memset (loop, 0, sizeof (struct ev_loop));
		1072
		1073	loop_init (EV_A_ flags);
		1074
		1075	if (ev_backend (EV_A))
		1076	return loop;
		1077
		1078	return 0;
		1079	}
		1080
		1081	void
		1082	ev_loop_destroy (EV_P)
		1083	{
		1084	loop_destroy (EV_A);
		1085	ev_free (loop);
		1086	}
		1087
		1088	void
		1089	ev_loop_fork (EV_P)
		1090	{
		1091	postfork = 1;
		1092	}
		1093
		1094	#endif
		1095
		1096	#if EV_MULTIPLICITY
		1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
		1099	#else
		1100	int
		1101	ev_default_loop (unsigned int flags)
		1102	#endif
		1103	{
		1104	if (sigpipe [0] == sigpipe [1])
		1105	if (pipe (sigpipe))
		1106	return 0;
		1107
		1108	if (!ev_default_loop_ptr)
		1109	{
		1110	#if EV_MULTIPLICITY
		1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1112	#else
		1113	ev_default_loop_ptr = 1;
		1114	#endif
		1115
		1116	loop_init (EV_A_ flags);
		1117
		1118	if (ev_backend (EV_A))
589	{	1119	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1120	siginit (EV_A);
593		1121
594	#ifndef WIN32	1122	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1127	#endif
600	}	1128	}
		1129	else
		1130	ev_default_loop_ptr = 0;
601	}	1131	}
602		1132
603	return method;	1133	return ev_default_loop_ptr;
604	}	1134	}
605		1135
		1136	void
		1137	ev_default_destroy (void)
		1138	{
606	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
607		1140	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	if (loop_init (EV_A_ methods))
614	return loop;
615
616	ev_loop_delete (loop);
617
618	return 0;
619	}
620
621	void
622	ev_loop_delete (EV_P)
623	{
624	/TODO/
625	free (loop);
626	}
627
628	#else
629
630	int
631	ev_init (int methods)
632	{
633	return loop_init (methods);
634	}
635
636	#endif	1141	#endif
		1142
		1143	#ifndef _WIN32
		1144	ev_ref (EV_A); /* child watcher */
		1145	ev_signal_stop (EV_A_ &childev);
		1146	#endif
		1147
		1148	ev_ref (EV_A); /* signal watcher */
		1149	ev_io_stop (EV_A_ &sigev);
		1150
		1151	close (sigpipe [0]); sigpipe [0] = 0;
		1152	close (sigpipe [1]); sigpipe [1] = 0;
		1153
		1154	loop_destroy (EV_A);
		1155	}
		1156
		1157	void
		1158	ev_default_fork (void)
		1159	{
		1160	#if EV_MULTIPLICITY
		1161	struct ev_loop *loop = ev_default_loop_ptr;
		1162	#endif
		1163
		1164	if (backend)
		1165	postfork = 1;
		1166	}
637		1167
638	/*****************************************************************************/	1168	/*****************************************************************************/
639		1169
640	void	1170	void
641	ev_fork_prepare (void)	1171	ev_invoke (EV_P_ void *w, int revents)
642	{	1172	{
643	/* nop */	1173	EV_CB_INVOKE ((W)w, revents);
644	}	1174	}
645		1175
646	void	1176	void inline_speed
647	ev_fork_parent (void)
648	{
649	/* nop */
650	}
651
652	void
653	ev_fork_child (void)
654	{
655	/TODO/
656	#if !EV_MULTIPLICITY
657	#if EV_USE_EPOLL
658	if (method == EVMETHOD_EPOLL)
659	epoll_postfork_child (EV_A);
660	#endif
661
662	ev_io_stop (EV_A_ &sigev);
663	close (sigpipe [0]);
664	close (sigpipe [1]);
665	pipe (sigpipe);
666	siginit (EV_A);
667	#endif
668	}
669
670	/*****************************************************************************/
671
672	static void
673	call_pending (EV_P)	1177	call_pending (EV_P)
674	{	1178	{
675	int pri;	1179	int pri;
676		1180
677	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
678	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
679	{	1183	{
680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
681		1185
682	if (p->w)	1186	if (expect_true (p->w))
683	{	1187	{
		1188	/assert (("non-pending watcher on pending list", p->w->pending));/
		1189
684	p->w->pending = 0;	1190	p->w->pending = 0;
685	p->w->cb (EV_A_ p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
686	}	1192	}
687	}	1193	}
688	}	1194	}
689		1195
690	static void	1196	void inline_size
691	timers_reify (EV_P)	1197	timers_reify (EV_P)
692	{	1198	{
693	while (timercnt && timers [0]->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
694	{	1200	{
695	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
		1202
		1203	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
696		1204
697	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
698	if (w->repeat)	1206	if (w->repeat)
699	{	1207	{
700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1209
701	w->at = mn_now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
702	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
703	}	1215	}
704	else	1216	else
705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706		1218
707	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
708	}	1220	}
709	}	1221	}
710		1222
711	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
712	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
713	{	1226	{
714	while (periodiccnt && periodics [0]->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
715	{	1228	{
716	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
		1230
		1231	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
717		1232
718	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
719	if (w->interval)	1234	if (w->reschedule_cb)
720	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
722	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
723	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
724	}	1245	}
725	else	1246	else
726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727		1248
728	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
729	}	1250	}
730	}	1251	}
731		1252
732	static void	1253	static void noinline
733	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
734	{	1255	{
735	int i;	1256	int i;
736		1257
737	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
738	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
739	{	1260	{
740	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
741		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
742	if (w->interval)	1265	else if (w->interval)
		1266	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1267	}
		1268
		1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
743	{	1284	{
744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
745		1287
746	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
747	{	1289	{
748	ev_periodic_stop (EV_A_ w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
749	ev_periodic_start (EV_A_ w);	1291	break;
750
751	i = 0; /* restart loop, inefficient, but time jumps should be rare */
752	}	1292	}
753	}	1293	}
754	}	1294	}
755	}	1295	}
		1296	#endif
756		1297
757	inline int	1298	int inline_size
758	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
759	{	1300	{
760	mn_now = get_clock ();	1301	mn_now = get_clock ();
761		1302
762	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
763	{	1304	{
764	rt_now = rtmn_diff + mn_now;	1305	ev_rt_now = rtmn_diff + mn_now;
765	return 0;	1306	return 0;
766	}	1307	}
767	else	1308	else
768	{	1309	{
769	now_floor = mn_now;	1310	now_floor = mn_now;
770	rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
771	return 1;	1312	return 1;
772	}	1313	}
773	}	1314	}
774		1315
775	static void	1316	void inline_size
776	time_update (EV_P)	1317	time_update (EV_P)
777	{	1318	{
778	int i;	1319	int i;
779		1320
780	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
782	{	1323	{
783	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
784	{	1325	{
785	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
786		1327
787	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1328	/* loop a few times, before making important decisions.
		1329	* on the choice of "4": one iteration isn't enough,
		1330	* in case we get preempted during the calls to
		1331	* ev_time and get_clock. a second call is almost guaranteed
		1332	* to succeed in that case, though. and looping a few more times
		1333	* doesn't hurt either as we only do this on time-jumps or
		1334	* in the unlikely event of having been preempted here.
		1335	*/
		1336	for (i = 4; --i; )
788	{	1337	{
789	rtmn_diff = rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
790		1339
791	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
792	return; /* all is well */	1341	return; /* all is well */
793		1342
794	rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
795	mn_now = get_clock ();	1344	mn_now = get_clock ();
796	now_floor = mn_now;	1345	now_floor = mn_now;
797	}	1346	}
798		1347
		1348	# if EV_PERIODIC_ENABLE
799	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
		1350	# endif
800	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
801	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
802	}	1353	}
803	}	1354	}
804	else	1355	else
805	#endif	1356	#endif
806	{	1357	{
807	rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
808		1359
809	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1360	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
810	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
811	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
		1364	#endif
812		1365
813	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
814	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
815	timers [i]->at += rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
816	}	1369	}
817		1370
818	mn_now = rt_now;	1371	mn_now = ev_rt_now;
819	}	1372	}
820	}	1373	}
821		1374
822	void	1375	void
823	ev_ref (EV_P)	1376	ev_ref (EV_P)
…		…
834	static int loop_done;	1387	static int loop_done;
835		1388
836	void	1389	void
837	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
838	{	1391	{
839	double block;
840	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1392	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1393	? EVUNLOOP_ONE
		1394	: EVUNLOOP_CANCEL;
		1395
		1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
841		1397
842	do	1398	do
843	{	1399	{
		1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
		1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
		1411	if (expect_false (postfork))
		1412	if (forkcnt)
		1413	{
		1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1415	call_pending (EV_A);
		1416	}
		1417	#endif
		1418
844	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
845	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
846	{	1421	{
847	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848	call_pending (EV_A);	1423	call_pending (EV_A);
849	}	1424	}
850		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
		1429	/* we might have forked, so reify kernel state if necessary */
		1430	if (expect_false (postfork))
		1431	loop_fork (EV_A);
		1432
851	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
852	fd_reify (EV_A);	1434	fd_reify (EV_A);
853		1435
854	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
855		1439
856	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
857	always have timers, we just calculate it always */	1441	block = 0.; /* do not block at all */
		1442	else
		1443	{
		1444	/* update time to cancel out callback processing overhead */
858	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
859	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
860	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
861	else	1448	else
862	#endif	1449	#endif
863	{	1450	{
864	rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
865	mn_now = rt_now;	1452	mn_now = ev_rt_now;
866	}	1453	}
867		1454
868	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
869	block = 0.;
870	else
871	{
872	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
873		1456
874	if (timercnt)	1457	if (timercnt)
875	{	1458	{
876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
877	if (block > to) block = to;	1460	if (block > to) block = to;
878	}	1461	}
879		1462
		1463	#if EV_PERIODIC_ENABLE
880	if (periodiccnt)	1464	if (periodiccnt)
881	{	1465	{
882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
883	if (block > to) block = to;	1467	if (block > to) block = to;
884	}	1468	}
		1469	#endif
885		1470
886	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
887	}	1472	}
888		1473
		1474	++loop_count;
889	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
890		1477
891	/* update rt_now, do magic */	1478	/* update ev_rt_now, do magic */
892	time_update (EV_A);	1479	time_update (EV_A);
893		1480
894	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
895	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
896	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
897		1486
		1487	#if EV_IDLE_ENABLE
898	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
899	if (!pendingcnt)	1489	idle_reify (EV_A);
900	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
901		1491
902	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
903	if (checkcnt)	1493	if (expect_false (checkcnt))
904	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
905		1495
906	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
907	}	1498	}
908	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
909		1500
910	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
911	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
912	}	1503	}
913		1504
914	void	1505	void
915	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
916	{	1507	{
917	loop_done = how;	1508	loop_done = how;
918	}	1509	}
919		1510
920	/*****************************************************************************/	1511	/*****************************************************************************/
921		1512
922	inline void	1513	void inline_size
923	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
924	{	1515	{
925	elem->next = *head;	1516	elem->next = *head;
926	*head = elem;	1517	*head = elem;
927	}	1518	}
928		1519
929	inline void	1520	void inline_size
930	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
931	{	1522	{
932	while (*head)	1523	while (*head)
933	{	1524	{
934	if (*head == elem)	1525	if (*head == elem)
…		…
939		1530
940	head = &(*head)->next;	1531	head = &(*head)->next;
941	}	1532	}
942	}	1533	}
943		1534
944	inline void	1535	void inline_speed
945	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
946	{	1537	{
947	if (w->pending)	1538	if (w->pending)
948	{	1539	{
949	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
950	w->pending = 0;	1541	w->pending = 0;
951	}	1542	}
952	}	1543	}
953		1544
954	inline void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (expect_true (pending))
		1552	{
		1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1554	w_->pending = 0;
		1555	p->w = 0;
		1556	return p->events;
		1557	}
		1558	else
		1559	return 0;
		1560	}
		1561
		1562	void inline_size
		1563	pri_adjust (EV_P_ W w)
		1564	{
		1565	int pri = w->priority;
		1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1568	w->priority = pri;
		1569	}
		1570
		1571	void inline_speed
955	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
956	{	1573	{
957	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
958	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
959
960	w->active = active;	1575	w->active = active;
961	ev_ref (EV_A);	1576	ev_ref (EV_A);
962	}	1577	}
963		1578
964	inline void	1579	void inline_size
965	ev_stop (EV_P_ W w)	1580	ev_stop (EV_P_ W w)
966	{	1581	{
967	ev_unref (EV_A);	1582	ev_unref (EV_A);
968	w->active = 0;	1583	w->active = 0;
969	}	1584	}
970		1585
971	/*****************************************************************************/	1586	/*****************************************************************************/
972		1587
973	void	1588	void noinline
974	ev_io_start (EV_P_ struct ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
975	{	1590	{
976	int fd = w->fd;	1591	int fd = w->fd;
977		1592
978	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
979	return;	1594	return;
980		1595
981	assert (("ev_io_start called with negative fd", fd >= 0));	1596	assert (("ev_io_start called with negative fd", fd >= 0));
982		1597
983	ev_start (EV_A_ (W)w, 1);	1598	ev_start (EV_A_ (W)w, 1);
984	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1599	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
985	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
986		1601
987	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
988	}	1603	}
989		1604
990	void	1605	void noinline
991	ev_io_stop (EV_P_ struct ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
992	{	1607	{
993	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
994	if (!ev_is_active (w))	1609	if (expect_false (!ev_is_active (w)))
995	return;	1610	return;
		1611
		1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
996		1613
997	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1614	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
998	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
999		1616
1000	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
1001	}	1618	}
1002		1619
1003	void	1620	void noinline
1004	ev_timer_start (EV_P_ struct ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1005	{	1622	{
1006	if (ev_is_active (w))	1623	if (expect_false (ev_is_active (w)))
1007	return;	1624	return;
1008		1625
1009	w->at += mn_now;	1626	((WT)w)->at += mn_now;
1010		1627
1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1628	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012		1629
1013	ev_start (EV_A_ (W)w, ++timercnt);	1630	ev_start (EV_A_ (W)w, ++timercnt);
1014	array_needsize (timers, timermax, timercnt, );	1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1015	timers [timercnt - 1] = w;	1632	timers [timercnt - 1] = w;
1016	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1017	}
1018		1634
1019	void	1635	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
		1636	}
		1637
		1638	void noinline
1020	ev_timer_stop (EV_P_ struct ev_timer *w)	1639	ev_timer_stop (EV_P_ ev_timer *w)
1021	{	1640	{
1022	ev_clear_pending (EV_A_ (W)w);	1641	clear_pending (EV_A_ (W)w);
1023	if (!ev_is_active (w))	1642	if (expect_false (!ev_is_active (w)))
1024	return;	1643	return;
1025		1644
1026	if (w->active < timercnt--)	1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1646
		1647	{
		1648	int active = ((W)w)->active;
		1649
		1650	if (expect_true (--active < --timercnt))
1027	{	1651	{
1028	timers [w->active - 1] = timers [timercnt];	1652	timers [active] = timers [timercnt];
1029	downheap ((WT *)timers, timercnt, w->active - 1);	1653	adjustheap ((WT *)timers, timercnt, active);
1030	}	1654	}
		1655	}
1031		1656
1032	w->at = w->repeat;	1657	((WT)w)->at -= mn_now;
1033		1658
1034	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1035	}	1660	}
1036		1661
1037	void	1662	void noinline
1038	ev_timer_again (EV_P_ struct ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1039	{	1664	{
1040	if (ev_is_active (w))	1665	if (ev_is_active (w))
1041	{	1666	{
1042	if (w->repeat)	1667	if (w->repeat)
1043	{	1668	{
1044	w->at = mn_now + w->repeat;	1669	((WT)w)->at = mn_now + w->repeat;
1045	downheap ((WT *)timers, timercnt, w->active - 1);	1670	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1046	}	1671	}
1047	else	1672	else
1048	ev_timer_stop (EV_A_ w);	1673	ev_timer_stop (EV_A_ w);
1049	}	1674	}
1050	else if (w->repeat)	1675	else if (w->repeat)
		1676	{
		1677	w->at = w->repeat;
1051	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
		1679	}
1052	}	1680	}
1053		1681
1054	void	1682	#if EV_PERIODIC_ENABLE
		1683	void noinline
1055	ev_periodic_start (EV_P_ struct ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1056	{	1685	{
1057	if (ev_is_active (w))	1686	if (expect_false (ev_is_active (w)))
1058	return;	1687	return;
1059		1688
		1689	if (w->reschedule_cb)
		1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1691	else if (w->interval)
		1692	{
1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1693	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061
1062	/* this formula differs from the one in periodic_reify because we do not always round up */	1694	/* this formula differs from the one in periodic_reify because we do not always round up */
1063	if (w->interval)
1064	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1695	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1696	}
		1697	else
		1698	((WT)w)->at = w->offset;
1065		1699
1066	ev_start (EV_A_ (W)w, ++periodiccnt);	1700	ev_start (EV_A_ (W)w, ++periodiccnt);
1067	array_needsize (periodics, periodicmax, periodiccnt, );	1701	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1068	periodics [periodiccnt - 1] = w;	1702	periodics [periodiccnt - 1] = w;
1069	upheap ((WT *)periodics, periodiccnt - 1);	1703	upheap ((WT *)periodics, periodiccnt - 1);
1070	}
1071		1704
1072	void	1705	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
		1706	}
		1707
		1708	void noinline
1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1709	ev_periodic_stop (EV_P_ ev_periodic *w)
1074	{	1710	{
1075	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
1076	if (!ev_is_active (w))	1712	if (expect_false (!ev_is_active (w)))
1077	return;	1713	return;
1078		1714
1079	if (w->active < periodiccnt--)	1715	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1716
		1717	{
		1718	int active = ((W)w)->active;
		1719
		1720	if (expect_true (--active < --periodiccnt))
1080	{	1721	{
1081	periodics [w->active - 1] = periodics [periodiccnt];	1722	periodics [active] = periodics [periodiccnt];
1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1723	adjustheap ((WT *)periodics, periodiccnt, active);
1083	}	1724	}
		1725	}
1084		1726
1085	ev_stop (EV_A_ (W)w);	1727	ev_stop (EV_A_ (W)w);
1086	}	1728	}
		1729
		1730	void noinline
		1731	ev_periodic_again (EV_P_ ev_periodic *w)
		1732	{
		1733	/* TODO: use adjustheap and recalculation */
		1734	ev_periodic_stop (EV_A_ w);
		1735	ev_periodic_start (EV_A_ w);
		1736	}
		1737	#endif
1087		1738
1088	#ifndef SA_RESTART	1739	#ifndef SA_RESTART
1089	# define SA_RESTART 0	1740	# define SA_RESTART 0
1090	#endif	1741	#endif
1091		1742
1092	void	1743	void noinline
1093	ev_signal_start (EV_P_ struct ev_signal *w)	1744	ev_signal_start (EV_P_ ev_signal *w)
1094	{	1745	{
		1746	#if EV_MULTIPLICITY
		1747	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1748	#endif
1095	if (ev_is_active (w))	1749	if (expect_false (ev_is_active (w)))
1096	return;	1750	return;
1097		1751
1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1752	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099		1753
1100	ev_start (EV_A_ (W)w, 1);	1754	ev_start (EV_A_ (W)w, 1);
1101	array_needsize (signals, signalmax, w->signum, signals_init);	1755	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1103		1757
1104	if (!w->next)	1758	if (!((WL)w)->next)
1105	{	1759	{
		1760	#if _WIN32
		1761	signal (w->signum, sighandler);
		1762	#else
1106	struct sigaction sa;	1763	struct sigaction sa;
1107	sa.sa_handler = sighandler;	1764	sa.sa_handler = sighandler;
1108	sigfillset (&sa.sa_mask);	1765	sigfillset (&sa.sa_mask);
1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110	sigaction (w->signum, &sa, 0);	1767	sigaction (w->signum, &sa, 0);
		1768	#endif
1111	}	1769	}
1112	}	1770	}
1113		1771
1114	void	1772	void noinline
1115	ev_signal_stop (EV_P_ struct ev_signal *w)	1773	ev_signal_stop (EV_P_ ev_signal *w)
1116	{	1774	{
1117	ev_clear_pending (EV_A_ (W)w);	1775	clear_pending (EV_A_ (W)w);
1118	if (!ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1119	return;	1777	return;
1120		1778
1121	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1122	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
1123		1781
1124	if (!signals [w->signum - 1].head)	1782	if (!signals [w->signum - 1].head)
1125	signal (w->signum, SIG_DFL);	1783	signal (w->signum, SIG_DFL);
1126	}	1784	}
1127		1785
1128	void	1786	void
1129	ev_idle_start (EV_P_ struct ev_idle *w)	1787	ev_child_start (EV_P_ ev_child *w)
1130	{	1788	{
		1789	#if EV_MULTIPLICITY
		1790	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1791	#endif
1131	if (ev_is_active (w))	1792	if (expect_false (ev_is_active (w)))
1132	return;	1793	return;
1133		1794
1134	ev_start (EV_A_ (W)w, ++idlecnt);	1795	ev_start (EV_A_ (W)w, 1);
1135	array_needsize (idles, idlemax, idlecnt, );	1796	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1136	idles [idlecnt - 1] = w;
1137	}	1797	}
1138		1798
1139	void	1799	void
1140	ev_idle_stop (EV_P_ struct ev_idle *w)	1800	ev_child_stop (EV_P_ ev_child *w)
1141	{	1801	{
1142	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1143	if (ev_is_active (w))	1803	if (expect_false (!ev_is_active (w)))
1144	return;	1804	return;
1145		1805
1146	idles [w->active - 1] = idles [--idlecnt];	1806	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1148	}	1808	}
1149		1809
		1810	#if EV_STAT_ENABLE
		1811
		1812	# ifdef _WIN32
		1813	# undef lstat
		1814	# define lstat(a,b) _stati64 (a,b)
		1815	# endif
		1816
		1817	#define DEF_STAT_INTERVAL 5.0074891
		1818	#define MIN_STAT_INTERVAL 0.1074891
		1819
		1820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1821
		1822	#if EV_USE_INOTIFY
		1823	# define EV_INOTIFY_BUFSIZE 8192
		1824
		1825	static void noinline
		1826	infy_add (EV_P_ ev_stat *w)
		1827	{
		1828	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
		1829
		1830	if (w->wd < 0)
		1831	{
		1832	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1833
		1834	/* monitor some parent directory for speedup hints */
		1835	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1836	{
		1837	char path [4096];
		1838	strcpy (path, w->path);
		1839
		1840	do
		1841	{
		1842	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1843	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1844
		1845	char *pend = strrchr (path, '/');
		1846
		1847	if (!pend)
		1848	break; /* whoops, no '/', complain to your admin */
		1849
		1850	*pend = 0;
		1851	w->wd = inotify_add_watch (fs_fd, path, mask);
		1852	}
		1853	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1854	}
		1855	}
		1856	else
		1857	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1858
		1859	if (w->wd >= 0)
		1860	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1861	}
		1862
		1863	static void noinline
		1864	infy_del (EV_P_ ev_stat *w)
		1865	{
		1866	int slot;
		1867	int wd = w->wd;
		1868
		1869	if (wd < 0)
		1870	return;
		1871
		1872	w->wd = -2;
		1873	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1874	wlist_del (&fs_hash [slot].head, (WL)w);
		1875
		1876	/* remove this watcher, if others are watching it, they will rearm */
		1877	inotify_rm_watch (fs_fd, wd);
		1878	}
		1879
		1880	static void noinline
		1881	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1882	{
		1883	if (slot < 0)
		1884	/* overflow, need to check for all hahs slots */
		1885	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1886	infy_wd (EV_A_ slot, wd, ev);
		1887	else
		1888	{
		1889	WL w_;
		1890
		1891	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1892	{
		1893	ev_stat w = (ev_stat )w_;
		1894	w_ = w_->next; /* lets us remove this watcher and all before it */
		1895
		1896	if (w->wd == wd \|\| wd == -1)
		1897	{
		1898	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1899	{
		1900	w->wd = -1;
		1901	infy_add (EV_A_ w); /* re-add, no matter what */
		1902	}
		1903
		1904	stat_timer_cb (EV_A_ &w->timer, 0);
		1905	}
		1906	}
		1907	}
		1908	}
		1909
		1910	static void
		1911	infy_cb (EV_P_ ev_io *w, int revents)
		1912	{
		1913	char buf [EV_INOTIFY_BUFSIZE];
		1914	struct inotify_event ev = (struct inotify_event )buf;
		1915	int ofs;
		1916	int len = read (fs_fd, buf, sizeof (buf));
		1917
		1918	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1919	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1920	}
		1921
		1922	void inline_size
		1923	infy_init (EV_P)
		1924	{
		1925	if (fs_fd != -2)
		1926	return;
		1927
		1928	fs_fd = inotify_init ();
		1929
		1930	if (fs_fd >= 0)
		1931	{
		1932	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1933	ev_set_priority (&fs_w, EV_MAXPRI);
		1934	ev_io_start (EV_A_ &fs_w);
		1935	}
		1936	}
		1937
		1938	void inline_size
		1939	infy_fork (EV_P)
		1940	{
		1941	int slot;
		1942
		1943	if (fs_fd < 0)
		1944	return;
		1945
		1946	close (fs_fd);
		1947	fs_fd = inotify_init ();
		1948
		1949	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1950	{
		1951	WL w_ = fs_hash [slot].head;
		1952	fs_hash [slot].head = 0;
		1953
		1954	while (w_)
		1955	{
		1956	ev_stat w = (ev_stat )w_;
		1957	w_ = w_->next; /* lets us add this watcher */
		1958
		1959	w->wd = -1;
		1960
		1961	if (fs_fd >= 0)
		1962	infy_add (EV_A_ w); /* re-add, no matter what */
		1963	else
		1964	ev_timer_start (EV_A_ &w->timer);
		1965	}
		1966
		1967	}
		1968	}
		1969
		1970	#endif
		1971
1150	void	1972	void
		1973	ev_stat_stat (EV_P_ ev_stat *w)
		1974	{
		1975	if (lstat (w->path, &w->attr) < 0)
		1976	w->attr.st_nlink = 0;
		1977	else if (!w->attr.st_nlink)
		1978	w->attr.st_nlink = 1;
		1979	}
		1980
		1981	static void noinline
		1982	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1983	{
		1984	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1985
		1986	/* we copy this here each the time so that */
		1987	/* prev has the old value when the callback gets invoked */
		1988	w->prev = w->attr;
		1989	ev_stat_stat (EV_A_ w);
		1990
		1991	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1992	if (
		1993	w->prev.st_dev != w->attr.st_dev
		1994	\|\| w->prev.st_ino != w->attr.st_ino
		1995	\|\| w->prev.st_mode != w->attr.st_mode
		1996	\|\| w->prev.st_nlink != w->attr.st_nlink
		1997	\|\| w->prev.st_uid != w->attr.st_uid
		1998	\|\| w->prev.st_gid != w->attr.st_gid
		1999	\|\| w->prev.st_rdev != w->attr.st_rdev
		2000	\|\| w->prev.st_size != w->attr.st_size
		2001	\|\| w->prev.st_atime != w->attr.st_atime
		2002	\|\| w->prev.st_mtime != w->attr.st_mtime
		2003	\|\| w->prev.st_ctime != w->attr.st_ctime
		2004	) {
		2005	#if EV_USE_INOTIFY
		2006	infy_del (EV_A_ w);
		2007	infy_add (EV_A_ w);
		2008	ev_stat_stat (EV_A_ w); /* avoid race... */
		2009	#endif
		2010
		2011	ev_feed_event (EV_A_ w, EV_STAT);
		2012	}
		2013	}
		2014
		2015	void
		2016	ev_stat_start (EV_P_ ev_stat *w)
		2017	{
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	/* since we use memcmp, we need to clear any padding data etc. */
		2022	memset (&w->prev, 0, sizeof (ev_statdata));
		2023	memset (&w->attr, 0, sizeof (ev_statdata));
		2024
		2025	ev_stat_stat (EV_A_ w);
		2026
		2027	if (w->interval < MIN_STAT_INTERVAL)
		2028	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2029
		2030	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2031	ev_set_priority (&w->timer, ev_priority (w));
		2032
		2033	#if EV_USE_INOTIFY
		2034	infy_init (EV_A);
		2035
		2036	if (fs_fd >= 0)
		2037	infy_add (EV_A_ w);
		2038	else
		2039	#endif
		2040	ev_timer_start (EV_A_ &w->timer);
		2041
		2042	ev_start (EV_A_ (W)w, 1);
		2043	}
		2044
		2045	void
		2046	ev_stat_stop (EV_P_ ev_stat *w)
		2047	{
		2048	clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	#if EV_USE_INOTIFY
		2053	infy_del (EV_A_ w);
		2054	#endif
		2055	ev_timer_stop (EV_A_ &w->timer);
		2056
		2057	ev_stop (EV_A_ (W)w);
		2058	}
		2059	#endif
		2060
		2061	#if EV_IDLE_ENABLE
		2062	void
		2063	ev_idle_start (EV_P_ ev_idle *w)
		2064	{
		2065	if (expect_false (ev_is_active (w)))
		2066	return;
		2067
		2068	pri_adjust (EV_A_ (W)w);
		2069
		2070	{
		2071	int active = ++idlecnt [ABSPRI (w)];
		2072
		2073	++idleall;
		2074	ev_start (EV_A_ (W)w, active);
		2075
		2076	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2077	idles [ABSPRI (w)][active - 1] = w;
		2078	}
		2079	}
		2080
		2081	void
		2082	ev_idle_stop (EV_P_ ev_idle *w)
		2083	{
		2084	clear_pending (EV_A_ (W)w);
		2085	if (expect_false (!ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	int active = ((W)w)->active;
		2090
		2091	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2092	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2093
		2094	ev_stop (EV_A_ (W)w);
		2095	--idleall;
		2096	}
		2097	}
		2098	#endif
		2099
		2100	void
1151	ev_prepare_start (EV_P_ struct ev_prepare *w)	2101	ev_prepare_start (EV_P_ ev_prepare *w)
1152	{	2102	{
1153	if (ev_is_active (w))	2103	if (expect_false (ev_is_active (w)))
1154	return;	2104	return;
1155		2105
1156	ev_start (EV_A_ (W)w, ++preparecnt);	2106	ev_start (EV_A_ (W)w, ++preparecnt);
1157	array_needsize (prepares, preparemax, preparecnt, );	2107	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1158	prepares [preparecnt - 1] = w;	2108	prepares [preparecnt - 1] = w;
1159	}	2109	}
1160		2110
1161	void	2111	void
1162	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2112	ev_prepare_stop (EV_P_ ev_prepare *w)
1163	{	2113	{
1164	ev_clear_pending (EV_A_ (W)w);	2114	clear_pending (EV_A_ (W)w);
1165	if (ev_is_active (w))	2115	if (expect_false (!ev_is_active (w)))
1166	return;	2116	return;
1167		2117
		2118	{
		2119	int active = ((W)w)->active;
1168	prepares [w->active - 1] = prepares [--preparecnt];	2120	prepares [active - 1] = prepares [--preparecnt];
		2121	((W)prepares [active - 1])->active = active;
		2122	}
		2123
1169	ev_stop (EV_A_ (W)w);	2124	ev_stop (EV_A_ (W)w);
1170	}	2125	}
1171		2126
1172	void	2127	void
1173	ev_check_start (EV_P_ struct ev_check *w)	2128	ev_check_start (EV_P_ ev_check *w)
1174	{	2129	{
1175	if (ev_is_active (w))	2130	if (expect_false (ev_is_active (w)))
1176	return;	2131	return;
1177		2132
1178	ev_start (EV_A_ (W)w, ++checkcnt);	2133	ev_start (EV_A_ (W)w, ++checkcnt);
1179	array_needsize (checks, checkmax, checkcnt, );	2134	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1180	checks [checkcnt - 1] = w;	2135	checks [checkcnt - 1] = w;
1181	}	2136	}
1182		2137
1183	void	2138	void
1184	ev_check_stop (EV_P_ struct ev_check *w)	2139	ev_check_stop (EV_P_ ev_check *w)
1185	{	2140	{
1186	ev_clear_pending (EV_A_ (W)w);	2141	clear_pending (EV_A_ (W)w);
1187	if (ev_is_active (w))	2142	if (expect_false (!ev_is_active (w)))
1188	return;	2143	return;
1189		2144
		2145	{
		2146	int active = ((W)w)->active;
1190	checks [w->active - 1] = checks [--checkcnt];	2147	checks [active - 1] = checks [--checkcnt];
		2148	((W)checks [active - 1])->active = active;
		2149	}
		2150
1191	ev_stop (EV_A_ (W)w);	2151	ev_stop (EV_A_ (W)w);
1192	}	2152	}
1193		2153
1194	void	2154	#if EV_EMBED_ENABLE
1195	ev_child_start (EV_P_ struct ev_child *w)	2155	void noinline
		2156	ev_embed_sweep (EV_P_ ev_embed *w)
1196	{	2157	{
		2158	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2159	}
		2160
		2161	static void
		2162	embed_cb (EV_P_ ev_io *io, int revents)
		2163	{
		2164	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		2165
1197	if (ev_is_active (w))	2166	if (ev_cb (w))
		2167	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2168	else
		2169	ev_embed_sweep (loop, w);
		2170	}
		2171
		2172	void
		2173	ev_embed_start (EV_P_ ev_embed *w)
		2174	{
		2175	if (expect_false (ev_is_active (w)))
1198	return;	2176	return;
		2177
		2178	{
		2179	struct ev_loop *loop = w->loop;
		2180	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2181	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2182	}
		2183
		2184	ev_set_priority (&w->io, ev_priority (w));
		2185	ev_io_start (EV_A_ &w->io);
1199		2186
1200	ev_start (EV_A_ (W)w, 1);	2187	ev_start (EV_A_ (W)w, 1);
1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1202	}	2188	}
1203		2189
1204	void	2190	void
1205	ev_child_stop (EV_P_ struct ev_child *w)	2191	ev_embed_stop (EV_P_ ev_embed *w)
1206	{	2192	{
1207	ev_clear_pending (EV_A_ (W)w);	2193	clear_pending (EV_A_ (W)w);
1208	if (ev_is_active (w))	2194	if (expect_false (!ev_is_active (w)))
1209	return;	2195	return;
1210		2196
1211	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2197	ev_io_stop (EV_A_ &w->io);
		2198
1212	ev_stop (EV_A_ (W)w);	2199	ev_stop (EV_A_ (W)w);
1213	}	2200	}
		2201	#endif
		2202
		2203	#if EV_FORK_ENABLE
		2204	void
		2205	ev_fork_start (EV_P_ ev_fork *w)
		2206	{
		2207	if (expect_false (ev_is_active (w)))
		2208	return;
		2209
		2210	ev_start (EV_A_ (W)w, ++forkcnt);
		2211	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2212	forks [forkcnt - 1] = w;
		2213	}
		2214
		2215	void
		2216	ev_fork_stop (EV_P_ ev_fork *w)
		2217	{
		2218	clear_pending (EV_A_ (W)w);
		2219	if (expect_false (!ev_is_active (w)))
		2220	return;
		2221
		2222	{
		2223	int active = ((W)w)->active;
		2224	forks [active - 1] = forks [--forkcnt];
		2225	((W)forks [active - 1])->active = active;
		2226	}
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
1214		2231
1215	/*****************************************************************************/	2232	/*****************************************************************************/
1216		2233
1217	struct ev_once	2234	struct ev_once
1218	{	2235	{
1219	struct ev_io io;	2236	ev_io io;
1220	struct ev_timer to;	2237	ev_timer to;
1221	void (cb)(int revents, void arg);	2238	void (cb)(int revents, void arg);
1222	void *arg;	2239	void *arg;
1223	};	2240	};
1224		2241
1225	static void	2242	static void
…		…
1228	void (cb)(int revents, void arg) = once->cb;	2245	void (cb)(int revents, void arg) = once->cb;
1229	void *arg = once->arg;	2246	void *arg = once->arg;
1230		2247
1231	ev_io_stop (EV_A_ &once->io);	2248	ev_io_stop (EV_A_ &once->io);
1232	ev_timer_stop (EV_A_ &once->to);	2249	ev_timer_stop (EV_A_ &once->to);
1233	free (once);	2250	ev_free (once);
1234		2251
1235	cb (revents, arg);	2252	cb (revents, arg);
1236	}	2253	}
1237		2254
1238	static void	2255	static void
1239	once_cb_io (EV_P_ struct ev_io *w, int revents)	2256	once_cb_io (EV_P_ ev_io *w, int revents)
1240	{	2257	{
1241	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	2258	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1242	}	2259	}
1243		2260
1244	static void	2261	static void
1245	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2262	once_cb_to (EV_P_ ev_timer *w, int revents)
1246	{	2263	{
1247	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	2264	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1248	}	2265	}
1249		2266
1250	void	2267	void
1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	2268	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1252	{	2269	{
1253	struct ev_once *once = malloc (sizeof (struct ev_once));	2270	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1254		2271
1255	if (!once)	2272	if (expect_false (!once))
		2273	{
1256	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	2274	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1257	else	2275	return;
1258	{	2276	}
		2277
1259	once->cb = cb;	2278	once->cb = cb;
1260	once->arg = arg;	2279	once->arg = arg;
1261		2280
1262	ev_watcher_init (&once->io, once_cb_io);	2281	ev_init (&once->io, once_cb_io);
1263	if (fd >= 0)	2282	if (fd >= 0)
1264	{	2283	{
1265	ev_io_set (&once->io, fd, events);	2284	ev_io_set (&once->io, fd, events);
1266	ev_io_start (EV_A_ &once->io);	2285	ev_io_start (EV_A_ &once->io);
1267	}	2286	}
1268		2287
1269	ev_watcher_init (&once->to, once_cb_to);	2288	ev_init (&once->to, once_cb_to);
1270	if (timeout >= 0.)	2289	if (timeout >= 0.)
1271	{	2290	{
1272	ev_timer_set (&once->to, timeout, 0.);	2291	ev_timer_set (&once->to, timeout, 0.);
1273	ev_timer_start (EV_A_ &once->to);	2292	ev_timer_start (EV_A_ &once->to);
1274	}
1275	}
1276	}
1277
1278	/*****************************************************************************/
1279
1280	#if 0
1281
1282	struct ev_io wio;
1283
1284	static void
1285	sin_cb (struct ev_io *w, int revents)
1286	{
1287	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1288	}
1289
1290	static void
1291	ocb (struct ev_timer *w, int revents)
1292	{
1293	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1294	ev_timer_stop (w);
1295	ev_timer_start (w);
1296	}
1297
1298	static void
1299	scb (struct ev_signal *w, int revents)
1300	{
1301	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1302	ev_io_stop (&wio);
1303	ev_io_start (&wio);
1304	}
1305
1306	static void
1307	gcb (struct ev_signal *w, int revents)
1308	{
1309	fprintf (stderr, "generic %x\n", revents);
1310
1311	}
1312
1313	int main (void)
1314	{
1315	ev_init (0);
1316
1317	ev_io_init (&wio, sin_cb, 0, EV_READ);
1318	ev_io_start (&wio);
1319
1320	struct ev_timer t[10000];
1321
1322	#if 0
1323	int i;
1324	for (i = 0; i < 10000; ++i)
1325	{	2293	}
1326	struct ev_timer *w = t + i;
1327	ev_watcher_init (w, ocb, i);
1328	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1329	ev_timer_start (w);
1330	if (drand48 () < 0.5)
1331	ev_timer_stop (w);
1332	}
1333	#endif
1334
1335	struct ev_timer t1;
1336	ev_timer_init (&t1, ocb, 5, 10);
1337	ev_timer_start (&t1);
1338
1339	struct ev_signal sig;
1340	ev_signal_init (&sig, scb, SIGQUIT);
1341	ev_signal_start (&sig);
1342
1343	struct ev_check cw;
1344	ev_check_init (&cw, gcb);
1345	ev_check_start (&cw);
1346
1347	struct ev_idle iw;
1348	ev_idle_init (&iw, gcb);
1349	ev_idle_start (&iw);
1350
1351	ev_loop (0);
1352
1353	return 0;
1354	}	2294	}
1355		2295
		2296	#ifdef __cplusplus
		2297	}
1356	#endif	2298	#endif
1357		2299
1358
1359
1360

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Comparing libev/ev.c (file contents): Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs. Revision 1.174 by root, Tue Dec 11 03:18:33 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.174 by root, Tue Dec 11 03:18:33 2007 UTC