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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
31	#if EV_USE_CONFIG_H	37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		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_USE_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USE_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
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#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) */	232	#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 */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97
98	#include "ev.h"
99		234
100	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	237	# define noinline __attribute__ ((noinline))
103	#else	238	#else
104	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
105	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
106	#endif	244	#endif
107		245
108	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
110		255
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
114	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
117		265
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		267
		268	#ifdef _WIN32
		269	# include "ev_win32.c"
		270	#endif
		271
		272	/*****************************************************************************/
		273
		274	static void (*syserr_cb)(const char *msg);
		275
		276	void
		277	ev_set_syserr_cb (void (*cb)(const char *msg))
		278	{
		279	syserr_cb = cb;
		280	}
		281
		282	static void noinline
		283	syserr (const char *msg)
		284	{
		285	if (!msg)
		286	msg = "(libev) system error";
		287
		288	if (syserr_cb)
		289	syserr_cb (msg);
		290	else
		291	{
		292	perror (msg);
		293	abort ();
		294	}
		295	}
		296
		297	static void *(*alloc)(void *ptr, long size);
		298
		299	void
		300	ev_set_allocator (void *(*cb)(void *ptr, long size))
		301	{
		302	alloc = cb;
		303	}
		304
		305	inline_speed void *
		306	ev_realloc (void *ptr, long size)
		307	{
		308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		309
		310	if (!ptr && size)
		311	{
		312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		313	abort ();
		314	}
		315
		316	return ptr;
		317	}
		318
		319	#define ev_malloc(size) ev_realloc (0, (size))
		320	#define ev_free(ptr) ev_realloc ((ptr), 0)
		321
		322	/*****************************************************************************/
		323
		324	typedef struct
		325	{
		326	WL head;
		327	unsigned char events;
		328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
		332	} ANFD;
		333
		334	typedef struct
		335	{
		336	W w;
		337	int events;
		338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
		347	#if EV_MULTIPLICITY
		348
		349	struct ev_loop
		350	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
		353	#define VAR(name,decl) decl;
		354	#include "ev_vars.h"
		355	#undef VAR
		356	};
		357	#include "ev_wrap.h"
		358
		359	static struct ev_loop default_loop_struct;
		360	struct ev_loop *ev_default_loop_ptr;
		361
		362	#else
		363
119	ev_tstamp ev_now;	364	ev_tstamp ev_rt_now;
120	int ev_method;	365	#define VAR(name,decl) static decl;
		366	#include "ev_vars.h"
		367	#undef VAR
121		368
122	static int have_monotonic; /* runtime */	369	static int ev_default_loop_ptr;
123		370
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	371	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		372
128	/*****************************************************************************/	373	/*****************************************************************************/
129		374
130	ev_tstamp	375	ev_tstamp
131	ev_time (void)	376	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	386	#endif
142	}	387	}
143		388
144	static ev_tstamp	389	ev_tstamp inline_size
145	get_clock (void)	390	get_clock (void)
146	{	391	{
147	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
149	{	394	{
…		…
154	#endif	399	#endif
155		400
156	return ev_time ();	401	return ev_time ();
157	}	402	}
158		403
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	404	#if EV_MULTIPLICITY
		405	ev_tstamp
		406	ev_now (EV_P)
		407	{
		408	return ev_rt_now;
		409	}
		410	#endif
160		411
		412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
		439
161	#define array_needsize(base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
163	{ \	442	{ \
164	int newcnt = cur; \	443	int ocur_ = (cur); \
165	do \	444	(base) = (type *)array_realloc \
166	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
167	newcnt = array_roundsize (base, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
168	} \	447	}
169	while ((cnt) > newcnt); \	448
		449	#if 0
		450	#define array_slim(type,stem) \
		451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
170	\	452	{ \
171	base = realloc (base, sizeof (*base) * (newcnt)); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
172	init (base + cur, newcnt - cur); \	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
173	cur = newcnt; \	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
174	}	456	}
		457	#endif
		458
		459	#define array_free(stem, idx) \
		460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		461
176	/*****************************************************************************/	462	/*****************************************************************************/
177		463
178	typedef struct	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
179	{	466	{
180	struct ev_io *head;	467	W w_ = (W)w;
181	unsigned char events;	468	int pri = ABSPRI (w_);
182	unsigned char reify;
183	} ANFD;
184		469
185	static ANFD *anfds;	470	if (expect_false (w_->pending))
186	static int anfdmax;	471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
187		480
188	static void	481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
189	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
190	{	494	{
191	while (count--)	495	while (count--)
192	{	496	{
193	base->head = 0;	497	base->head = 0;
…		…
196		500
197	++base;	501	++base;
198	}	502	}
199	}	503	}
200		504
201	typedef struct	505	void inline_speed
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;
217	}
218
219	w->pending = ++pendingcnt [ABSPRI (w)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
221	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}
224
225	static void
226	queue_events (W *events, int eventcnt, int type)
227	{
228	int i;
229
230	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);
232	}
233
234	static void
235	fd_event (int fd, int events)	506	fd_event (EV_P_ int fd, int revents)
236	{	507	{
237	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	509	ev_io *w;
239		510
240	for (w = anfd->head; w; w = w->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
241	{	512	{
242	int ev = w->events & events;	513	int ev = w->events & revents;
243		514
244	if (ev)	515	if (ev)
245	event ((W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
246	}	517	}
247	}	518	}
248		519
249	/*****************************************************************************/	520	void
		521	ev_feed_fd_event (EV_P_ int fd, int revents)
		522	{
		523	if (fd >= 0 && fd < anfdmax)
		524	fd_event (EV_A_ fd, revents);
		525	}
250		526
251	static int *fdchanges;	527	void inline_size
252	static int fdchangemax, fdchangecnt;	528	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	529	{
257	int i;	530	int i;
258		531
259	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
260	{	533	{
261	int fd = fdchanges [i];	534	int fd = fdchanges [i];
262	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	536	ev_io *w;
264		537
265	int events = 0;	538	int events = 0;
266		539
267	for (w = anfd->head; w; w = w->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
268	events |= w->events;	541	events |= w->events;
269		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
270	anfd->reify = 0;	552	anfd->reify = 0;
271		553
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	555	anfd->events = events;
276	}
277	}	556	}
278		557
279	fdchangecnt = 0;	558	fdchangecnt = 0;
280	}	559	}
281		560
282	static void	561	void inline_size
283	fd_change (int fd)	562	fd_change (EV_P_ int fd, int flags)
284	{	563	{
285	if (anfds [fd].reify || fdchangecnt < 0)	564	unsigned char reify = anfds [fd].reify;
286	return;
287
288	anfds [fd].reify = 1;	565	anfds [fd].reify |= flags | 1;
289		566
		567	if (expect_true (!reify))
		568	{
290	++fdchangecnt;	569	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
		572	}
293	}	573	}
294		574
295	static void	575	void inline_speed
296	fd_kill (int fd)	576	fd_kill (EV_P_ int fd)
297	{	577	{
298	struct ev_io *w;	578	ev_io *w;
299		579
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	580	while ((w = (ev_io *)anfds [fd].head))
302	{	581	{
303	ev_io_stop (w);	582	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	583	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	584	}
		585	}
		586
		587	int inline_size
		588	fd_valid (int fd)
		589	{
		590	#ifdef _WIN32
		591	return _get_osfhandle (fd) != -1;
		592	#else
		593	return fcntl (fd, F_GETFD) != -1;
		594	#endif
306	}	595	}
307		596
308	/* called on EBADF to verify fds */	597	/* called on EBADF to verify fds */
309	static void	598	static void noinline
310	fd_ebadf (void)	599	fd_ebadf (EV_P)
311	{	600	{
312	int fd;	601	int fd;
313		602
314	for (fd = 0; fd < anfdmax; ++fd)	603	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	604	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	605	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	606	fd_kill (EV_A_ fd);
318	}	607	}
319		608
320	/* called on ENOMEM in select/poll to kill some fds and retry */	609	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	610	static void noinline
322	fd_enomem (void)	611	fd_enomem (EV_P)
323	{	612	{
324	int fd = anfdmax;	613	int fd;
325		614
326	while (fd--)	615	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	616	if (anfds [fd].events)
328	{	617	{
329	close (fd);
330	fd_kill (fd);	618	fd_kill (EV_A_ fd);
331	return;	619	return;
332	}	620	}
333	}	621	}
334		622
		623	/* usually called after fork if backend needs to re-arm all fds from scratch */
		624	static void noinline
		625	fd_rearm_all (EV_P)
		626	{
		627	int fd;
		628
		629	for (fd = 0; fd < anfdmax; ++fd)
		630	if (anfds [fd].events)
		631	{
		632	anfds [fd].events = 0;
		633	fd_change (EV_A_ fd, EV_IOFDSET);
		634	}
		635	}
		636
335	/*****************************************************************************/	637	/*****************************************************************************/
336		638
337	static struct ev_timer **timers;	639	void inline_speed
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void
344	upheap (WT *timers, int k)	640	upheap (WT *heap, int k)
345	{	641	{
346	WT w = timers [k];	642	WT w = heap [k];
347		643
348	while (k && timers [k >> 1]->at > w->at)	644	while (k)
349	{
350	timers [k] = timers [k >> 1];
351	timers [k]->active = k + 1;
352	k >>= 1;
353	}	645	{
354
355	timers [k] = w;
356	timers [k]->active = k + 1;
357
358	}
359
360	static void
361	downheap (WT *timers, int N, int k)
362	{
363	WT w = timers [k];
364
365	while (k < (N >> 1))
366	{
367	int j = k << 1;	646	int p = (k - 1) >> 1;
368		647
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	648	if (heap [p]->at <= w->at)
370	++j;
371
372	if (w->at <= timers [j]->at)
373	break;	649	break;
374		650
375	timers [k] = timers [j];	651	heap [k] = heap [p];
376	timers [k]->active = k + 1;	652	((W)heap [k])->active = k + 1;
377	k = j;	653	k = p;
		654	}
		655
		656	heap [k] = w;
		657	((W)heap [k])->active = k + 1;
		658	}
		659
		660	void inline_speed
		661	downheap (WT *heap, int N, int k)
		662	{
		663	WT w = heap [k];
		664
		665	for (;;)
378	}	666	{
		667	int c = (k << 1) + 1;
379		668
		669	if (c >= N)
		670	break;
		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
		678	heap [k] = heap [c];
		679	((W)heap [k])->active = k + 1;
		680
		681	k = c;
		682	}
		683
380	timers [k] = w;	684	heap [k] = w;
381	timers [k]->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686	}
		687
		688	void inline_size
		689	adjustheap (WT *heap, int N, int k)
		690	{
		691	upheap (heap, k);
		692	downheap (heap, N, k);
382	}	693	}
383		694
384	/*****************************************************************************/	695	/*****************************************************************************/
385		696
386	typedef struct	697	typedef struct
387	{	698	{
388	struct ev_signal *head;	699	WL head;
389	sig_atomic_t volatile gotsig;	700	sig_atomic_t volatile gotsig;
390	} ANSIG;	701	} ANSIG;
391		702
392	static ANSIG *signals;	703	static ANSIG *signals;
393	static int signalmax;	704	static int signalmax;
394		705
395	static int sigpipe [2];	706	static int sigpipe [2];
396	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
397	static struct ev_io sigev;	708	static ev_io sigev;
398		709
399	static void	710	void inline_size
400	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
401	{	712	{
402	while (count--)	713	while (count--)
403	{	714	{
404	base->head = 0;	715	base->head = 0;
…		…
409	}	720	}
410		721
411	static void	722	static void
412	sighandler (int signum)	723	sighandler (int signum)
413	{	724	{
		725	#if _WIN32
		726	signal (signum, sighandler);
		727	#endif
		728
414	signals [signum - 1].gotsig = 1;	729	signals [signum - 1].gotsig = 1;
415		730
416	if (!gotsig)	731	if (!gotsig)
417	{	732	{
418	int old_errno = errno;	733	int old_errno = errno;
…		…
420	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
421	errno = old_errno;	736	errno = old_errno;
422	}	737	}
423	}	738	}
424		739
		740	void noinline
		741	ev_feed_signal_event (EV_P_ int signum)
		742	{
		743	WL w;
		744
		745	#if EV_MULTIPLICITY
		746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		747	#endif
		748
		749	--signum;
		750
		751	if (signum < 0 || signum >= signalmax)
		752	return;
		753
		754	signals [signum].gotsig = 0;
		755
		756	for (w = signals [signum].head; w; w = w->next)
		757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		758	}
		759
425	static void	760	static void
426	sigcb (struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
427	{	762	{
428	struct ev_signal *w;
429	int signum;	763	int signum;
430		764
431	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	766	gotsig = 0;
433		767
434	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
435	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
		770	ev_feed_signal_event (EV_A_ signum + 1);
		771	}
		772
		773	void inline_speed
		774	fd_intern (int fd)
		775	{
		776	#ifdef _WIN32
		777	int arg = 1;
		778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		779	#else
		780	fcntl (fd, F_SETFD, FD_CLOEXEC);
		781	fcntl (fd, F_SETFL, O_NONBLOCK);
		782	#endif
		783	}
		784
		785	static void noinline
		786	siginit (EV_P)
		787	{
		788	fd_intern (sigpipe [0]);
		789	fd_intern (sigpipe [1]);
		790
		791	ev_io_set (&sigev, sigpipe [0], EV_READ);
		792	ev_io_start (EV_A_ &sigev);
		793	ev_unref (EV_A); /* child watcher should not keep loop alive */
		794	}
		795
		796	/*****************************************************************************/
		797
		798	static WL childs [EV_PID_HASHSIZE];
		799
		800	#ifndef _WIN32
		801
		802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
436	{	811	{
437	signals [signum].gotsig = 0;	812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
438		813	w->rpid = pid;
439	for (w = signals [signum].head; w; w = w->next)	814	w->rstatus = status;
440	event ((W)w, EV_SIGNAL);	815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
441	}	816	}
442	}	817	}
443
444	static void
445	siginit (void)
446	{
447	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450
451	/* rather than sort out wether we really need nb, set it */
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif
455
456	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);
458	}
459
460	/*****************************************************************************/
461
462	static struct ev_idle **idles;
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472
473	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;
475
476	#ifndef WIN32
477		818
478	#ifndef WCONTINUED	819	#ifndef WCONTINUED
479	# define WCONTINUED 0	820	# define WCONTINUED 0
480	#endif	821	#endif
481		822
482	static void	823	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)
484	{
485	struct ev_child *w;
486
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)
488	if (w->pid == pid || !w->pid)
489	{
490	w->priority = sw->priority; /* need to do it *now* */
491	w->rpid = pid;
492	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);
495	}
496	}
497
498	static void
499	childcb (struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
500	{	825	{
501	int pid, status;	826	int pid, status;
502		827
503	printf ("chld %x\n", revents);//D	828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
506	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
507	event ((W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508		838
509	child_reap (sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
511	}
512	}	842	}
513		843
514	#endif	844	#endif
515		845
516	/*****************************************************************************/	846	/*****************************************************************************/
517		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
518	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
519	# include "ev_kqueue.c"	852	# include "ev_kqueue.c"
520	#endif	853	#endif
521	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
522	# include "ev_epoll.c"	855	# include "ev_epoll.c"
…		…
538	ev_version_minor (void)	871	ev_version_minor (void)
539	{	872	{
540	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
541	}	874	}
542		875
543	/* return true if we are running with elevated privileges and ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	877	int inline_size
545	enable_secure ()	878	enable_secure (void)
546	{	879	{
		880	#ifdef _WIN32
		881	return 0;
		882	#else
547	return getuid () != geteuid ()	883	return getuid () != geteuid ()
548	|| getgid () != getegid ();	884	|| getgid () != getegid ();
		885	#endif
549	}	886	}
550		887
551	int ev_init (int methods)	888	unsigned int
		889	ev_supported_backends (void)
552	{	890	{
553	if (!ev_method)	891	unsigned int flags = 0;
		892
		893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
		904	{
		905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
		941	loop_init (EV_P_ unsigned int flags)
		942	{
		943	if (!backend)
554	{	944	{
555	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
556	{	946	{
557	struct timespec ts;	947	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	949	have_monotonic = 1;
560	}	950	}
561	#endif	951	#endif
562		952
563	ev_now = ev_time ();	953	ev_rt_now = ev_time ();
564	now = get_clock ();	954	mn_now = get_clock ();
565	now_floor = now;	955	now_floor = mn_now;
566	diff = ev_now - now;	956	rtmn_diff = ev_rt_now - mn_now;
567		957
568	if (pipe (sigpipe))	958	/* pid check not overridable via env */
569	return 0;	959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
570		963
571	if (methods == EVMETHOD_AUTO)	964	if (!(flags & EVFLAG_NOENV)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))	965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
574	else
575	methods = EVMETHOD_ANY;
576		968
577	ev_method = 0;	969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
		978	#if EV_USE_PORT
		979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		980	#endif
578	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
580	#endif	983	#endif
581	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
583	#endif	986	#endif
584	#if EV_USE_POLL	987	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
586	#endif	989	#endif
587	#if EV_USE_SELECT	990	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
589	#endif	992	#endif
590		993
591	if (ev_method)	994	ev_init (&sigev, sigcb);
		995	ev_set_priority (&sigev, EV_MAXPRI);
		996	}
		997	}
		998
		999	static void noinline
		1000	loop_destroy (EV_P)
		1001	{
		1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
		1012	#if EV_USE_PORT
		1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1014	#endif
		1015	#if EV_USE_KQUEUE
		1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1017	#endif
		1018	#if EV_USE_EPOLL
		1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1020	#endif
		1021	#if EV_USE_POLL
		1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1023	#endif
		1024	#if EV_USE_SELECT
		1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1026	#endif
		1027
		1028	for (i = NUMPRI; i--; )
		1029	{
		1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
		1035
		1036	/* have to use the microsoft-never-gets-it-right macro */
		1037	array_free (fdchange, EMPTY);
		1038	array_free (timer, EMPTY);
		1039	#if EV_PERIODIC_ENABLE
		1040	array_free (periodic, EMPTY);
		1041	#endif
		1042	array_free (prepare, EMPTY);
		1043	array_free (check, EMPTY);
		1044
		1045	backend = 0;
		1046	}
		1047
		1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
		1051	loop_fork (EV_P)
		1052	{
		1053	#if EV_USE_PORT
		1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1055	#endif
		1056	#if EV_USE_KQUEUE
		1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1058	#endif
		1059	#if EV_USE_EPOLL
		1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
		1064	#endif
		1065
		1066	if (ev_is_active (&sigev))
		1067	{
		1068	/* default loop */
		1069
		1070	ev_ref (EV_A);
		1071	ev_io_stop (EV_A_ &sigev);
		1072	close (sigpipe [0]);
		1073	close (sigpipe [1]);
		1074
		1075	while (pipe (sigpipe))
		1076	syserr ("(libev) error creating pipe");
		1077
		1078	siginit (EV_A);
		1079	}
		1080
		1081	postfork = 0;
		1082	}
		1083
		1084	#if EV_MULTIPLICITY
		1085	struct ev_loop *
		1086	ev_loop_new (unsigned int flags)
		1087	{
		1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1089
		1090	memset (loop, 0, sizeof (struct ev_loop));
		1091
		1092	loop_init (EV_A_ flags);
		1093
		1094	if (ev_backend (EV_A))
		1095	return loop;
		1096
		1097	return 0;
		1098	}
		1099
		1100	void
		1101	ev_loop_destroy (EV_P)
		1102	{
		1103	loop_destroy (EV_A);
		1104	ev_free (loop);
		1105	}
		1106
		1107	void
		1108	ev_loop_fork (EV_P)
		1109	{
		1110	postfork = 1;
		1111	}
		1112
		1113	#endif
		1114
		1115	#if EV_MULTIPLICITY
		1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
		1118	#else
		1119	int
		1120	ev_default_loop (unsigned int flags)
		1121	#endif
		1122	{
		1123	if (sigpipe [0] == sigpipe [1])
		1124	if (pipe (sigpipe))
		1125	return 0;
		1126
		1127	if (!ev_default_loop_ptr)
		1128	{
		1129	#if EV_MULTIPLICITY
		1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1131	#else
		1132	ev_default_loop_ptr = 1;
		1133	#endif
		1134
		1135	loop_init (EV_A_ flags);
		1136
		1137	if (ev_backend (EV_A))
592	{	1138	{
593	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	1139	siginit (EV_A);
596		1140
597	#ifndef WIN32	1141	#ifndef _WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	1143	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	1144	ev_signal_start (EV_A_ &childev);
		1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	1146	#endif
602	}	1147	}
		1148	else
		1149	ev_default_loop_ptr = 0;
603	}	1150	}
604		1151
605	return ev_method;	1152	return ev_default_loop_ptr;
		1153	}
		1154
		1155	void
		1156	ev_default_destroy (void)
		1157	{
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
		1161
		1162	#ifndef _WIN32
		1163	ev_ref (EV_A); /* child watcher */
		1164	ev_signal_stop (EV_A_ &childev);
		1165	#endif
		1166
		1167	ev_ref (EV_A); /* signal watcher */
		1168	ev_io_stop (EV_A_ &sigev);
		1169
		1170	close (sigpipe [0]); sigpipe [0] = 0;
		1171	close (sigpipe [1]); sigpipe [1] = 0;
		1172
		1173	loop_destroy (EV_A);
		1174	}
		1175
		1176	void
		1177	ev_default_fork (void)
		1178	{
		1179	#if EV_MULTIPLICITY
		1180	struct ev_loop *loop = ev_default_loop_ptr;
		1181	#endif
		1182
		1183	if (backend)
		1184	postfork = 1;
606	}	1185	}
607		1186
608	/*****************************************************************************/	1187	/*****************************************************************************/
609		1188
610	void	1189	void
611	ev_fork_prepare (void)	1190	ev_invoke (EV_P_ void *w, int revents)
612	{	1191	{
613	/* nop */	1192	EV_CB_INVOKE ((W)w, revents);
614	}	1193	}
615		1194
616	void	1195	void inline_speed
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif
629
630	ev_io_stop (&sigev);
631	close (sigpipe [0]);
632	close (sigpipe [1]);
633	pipe (sigpipe);
634	siginit ();
635	}
636
637	/*****************************************************************************/
638
639	static void
640	call_pending (void)	1196	call_pending (EV_P)
641	{	1197	{
642	int pri;	1198	int pri;
643		1199
644	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
646	{	1202	{
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		1204
649	if (p->w)	1205	if (expect_true (p->w))
650	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
651	p->w->pending = 0;	1209	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
653	}	1211	}
654	}	1212	}
655	}	1213	}
656		1214
657	static void	1215	void inline_size
658	timers_reify (void)	1216	timers_reify (EV_P)
659	{	1217	{
660	while (timercnt && timers [0]->at <= now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	1219	{
662	struct ev_timer *w = timers [0];	1220	ev_timer *w = (ev_timer *)timers [0];
		1221
		1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
663		1223
664	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
665	if (w->repeat)	1225	if (w->repeat)
666	{	1226	{
667	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1228
668	w->at = now + w->repeat;	1229	((WT)w)->at += w->repeat;
		1230	if (((WT)w)->at < mn_now)
		1231	((WT)w)->at = mn_now;
		1232
669	downheap ((WT *)timers, timercnt, 0);	1233	downheap (timers, timercnt, 0);
670	}	1234	}
671	else	1235	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1237
674	event ((W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
675	}	1239	}
676	}	1240	}
677		1241
678	static void	1242	#if EV_PERIODIC_ENABLE
		1243	void inline_size
679	periodics_reify (void)	1244	periodics_reify (EV_P)
680	{	1245	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
682	{	1247	{
683	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = (ev_periodic *)periodics [0];
		1249
		1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
684		1251
685	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
686	if (w->interval)	1253	if (w->reschedule_cb)
687	{	1254	{
		1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1257	downheap (periodics, periodiccnt, 0);
		1258	}
		1259	else if (w->interval)
		1260	{
688	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
689	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
690	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
691	}	1265	}
692	else	1266	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		1268
695	event ((W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
696	}	1270	}
697	}	1271	}
698		1272
699	static void	1273	static void noinline
700	periodics_reschedule (ev_tstamp diff)	1274	periodics_reschedule (EV_P)
701	{	1275	{
702	int i;	1276	int i;
703		1277
704	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
706	{	1280	{
707	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = (ev_periodic *)periodics [i];
708		1282
		1283	if (w->reschedule_cb)
		1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
709	if (w->interval)	1285	else if (w->interval)
		1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1287	}
		1288
		1289	/* now rebuild the heap */
		1290	for (i = periodiccnt >> 1; i--; )
		1291	downheap (periodics, periodiccnt, i);
		1292	}
		1293	#endif
		1294
		1295	#if EV_IDLE_ENABLE
		1296	void inline_size
		1297	idle_reify (EV_P)
		1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
710	{	1304	{
711	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1305	if (pendingcnt [pri])
		1306	break;
712		1307
713	if (fabs (diff) >= 1e-4)	1308	if (idlecnt [pri])
714	{	1309	{
715	ev_periodic_stop (w);	1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
716	ev_periodic_start (w);	1311	break;
717
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}	1312	}
720	}	1313	}
721	}	1314	}
722	}	1315	}
		1316	#endif
723		1317
724	static int	1318	void inline_speed
725	time_update_monotonic (void)	1319	time_update (EV_P_ ev_tstamp max_block)
726	{
727	now = get_clock ();
728
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
730	{
731	ev_now = now + diff;
732	return 0;
733	}
734	else
735	{
736	now_floor = now;
737	ev_now = ev_time ();
738	return 1;
739	}
740	}
741
742	static void
743	time_update (void)
744	{	1320	{
745	int i;	1321	int i;
746		1322
747	#if EV_USE_MONOTONIC	1323	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	1324	if (expect_true (have_monotonic))
749	{	1325	{
750	if (time_update_monotonic ())	1326	ev_tstamp odiff = rtmn_diff;
		1327
		1328	mn_now = get_clock ();
		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
		1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
751	{	1333	{
752	ev_tstamp odiff = diff;	1334	ev_rt_now = rtmn_diff + mn_now;
753		1335	return;
754	for (i = 4; --i; ) /* loop a few times, before making important decisions */
755	{
756	diff = ev_now - now;
757
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)
759	return; /* all is well */
760
761	ev_now = ev_time ();
762	now = get_clock ();
763	now_floor = now;
764	}
765
766	periodics_reschedule (diff - odiff);
767	/* no timer adjustment, as the monotonic clock doesn't jump */
768	}	1336	}
		1337
		1338	now_floor = mn_now;
		1339	ev_rt_now = ev_time ();
		1340
		1341	/* loop a few times, before making important decisions.
		1342	* on the choice of "4": one iteration isn't enough,
		1343	* in case we get preempted during the calls to
		1344	* ev_time and get_clock. a second call is almost guaranteed
		1345	* to succeed in that case, though. and looping a few more times
		1346	* doesn't hurt either as we only do this on time-jumps or
		1347	* in the unlikely event of having been preempted here.
		1348	*/
		1349	for (i = 4; --i; )
		1350	{
		1351	rtmn_diff = ev_rt_now - mn_now;
		1352
		1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1354	return; /* all is well */
		1355
		1356	ev_rt_now = ev_time ();
		1357	mn_now = get_clock ();
		1358	now_floor = mn_now;
		1359	}
		1360
		1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	1366	}
770	else	1367	else
771	#endif	1368	#endif
772	{	1369	{
773	ev_now = ev_time ();	1370	ev_rt_now = ev_time ();
774		1371
775	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
776	{	1373	{
		1374	#if EV_PERIODIC_ENABLE
777	periodics_reschedule (ev_now - now);	1375	periodics_reschedule (EV_A);
778		1376	#endif
779	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
780	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
782	}	1380	}
783		1381
784	now = ev_now;	1382	mn_now = ev_rt_now;
785	}	1383	}
786	}	1384	}
787		1385
788	int ev_loop_done;	1386	void
		1387	ev_ref (EV_P)
		1388	{
		1389	++activecnt;
		1390	}
789		1391
		1392	void
		1393	ev_unref (EV_P)
		1394	{
		1395	--activecnt;
		1396	}
		1397
		1398	static int loop_done;
		1399
		1400	void
790	void ev_loop (int flags)	1401	ev_loop (EV_P_ int flags)
791	{	1402	{
792	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
		1406
		1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
794		1408
795	do	1409	do
796	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
797	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
798	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
799	{	1432	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	1434	call_pending (EV_A);
802	}	1435	}
803		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
		1440	/* we might have forked, so reify kernel state if necessary */
		1441	if (expect_false (postfork))
		1442	loop_fork (EV_A);
		1443
804	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
805	fd_reify ();	1445	fd_reify (EV_A);
806		1446
807	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
808		1450
809	/* we only need this for !monotonic clockor timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
810	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
811	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))
813	time_update_monotonic ();
814	else	1453	else
815	#endif
816	{	1454	{
817	ev_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
818	now = ev_now;	1456	time_update (EV_A_ 1e100);
819	}
820		1457
821	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;
823	else
824	{
825	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
826		1459
827	if (timercnt)	1460	if (timercnt)
828	{	1461	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
830	if (block > to) block = to;	1463	if (block > to) block = to;
831	}	1464	}
832		1465
		1466	#if EV_PERIODIC_ENABLE
833	if (periodiccnt)	1467	if (periodiccnt)
834	{	1468	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
836	if (block > to) block = to;	1470	if (block > to) block = to;
837	}	1471	}
		1472	#endif
838		1473
839	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
840	}	1475	}
841		1476
842	method_poll (block);	1477	++loop_count;
		1478	backend_poll (EV_A_ block);
843		1479
844	/* update ev_now, do magic */	1480	/* update ev_rt_now, do magic */
845	time_update ();	1481	time_update (EV_A_ block);
		1482	}
846		1483
847	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
		1486	#if EV_PERIODIC_ENABLE
849	periodics_reify (); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
		1488	#endif
850		1489
		1490	#if EV_IDLE_ENABLE
851	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
852	if (!pendingcnt)	1492	idle_reify (EV_A);
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1493	#endif
854		1494
855	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
856	if (checkcnt)	1496	if (expect_false (checkcnt))
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1498
859	call_pending ();	1499	call_pending (EV_A);
860	}
861	while (!ev_loop_done);
862		1500
863	if (ev_loop_done != 2)	1501	}
		1502	while (expect_true (activecnt && !loop_done));
		1503
		1504	if (loop_done == EVUNLOOP_ONE)
		1505	loop_done = EVUNLOOP_CANCEL;
		1506	}
		1507
		1508	void
		1509	ev_unloop (EV_P_ int how)
		1510	{
864	ev_loop_done = 0;	1511	loop_done = how;
865	}	1512	}
866		1513
867	/*****************************************************************************/	1514	/*****************************************************************************/
868		1515
869	static void	1516	void inline_size
870	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
871	{	1518	{
872	elem->next = *head;	1519	elem->next = *head;
873	*head = elem;	1520	*head = elem;
874	}	1521	}
875		1522
876	static void	1523	void inline_size
877	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
878	{	1525	{
879	while (*head)	1526	while (*head)
880	{	1527	{
881	if (*head == elem)	1528	if (*head == elem)
…		…
886		1533
887	head = &(*head)->next;	1534	head = &(*head)->next;
888	}	1535	}
889	}	1536	}
890		1537
891	static void	1538	void inline_speed
892	ev_clear_pending (W w)	1539	clear_pending (EV_P_ W w)
893	{	1540	{
894	if (w->pending)	1541	if (w->pending)
895	{	1542	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1544	w->pending = 0;
898	}	1545	}
899	}	1546	}
900		1547
901	static void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
902	ev_start (W w, int active)	1575	ev_start (EV_P_ W w, int active)
903	{	1576	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906
907	w->active = active;	1578	w->active = active;
		1579	ev_ref (EV_A);
908	}	1580	}
909		1581
910	static void	1582	void inline_size
911	ev_stop (W w)	1583	ev_stop (EV_P_ W w)
912	{	1584	{
		1585	ev_unref (EV_A);
913	w->active = 0;	1586	w->active = 0;
914	}	1587	}
915		1588
916	/*****************************************************************************/	1589	/*****************************************************************************/
917		1590
918	void	1591	void noinline
919	ev_io_start (struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
920	{	1593	{
921	int fd = w->fd;	1594	int fd = w->fd;
922		1595
923	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
924	return;	1597	return;
925		1598
926	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
927		1600
928	ev_start ((W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add (&anfds[fd].head, (WL)w);
931		1604
932	fd_change (fd);	1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);
		1606	w->events &= ~ EV_IOFDSET;
933	}	1607	}
934		1608
935	void	1609	void noinline
936	ev_io_stop (struct ev_io *w)	1610	ev_io_stop (EV_P_ ev_io *w)
937	{	1611	{
938	ev_clear_pending ((W)w);	1612	clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1613	if (expect_false (!ev_is_active (w)))
940	return;	1614	return;
941		1615
		1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1617
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1618	wlist_del (&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1619	ev_stop (EV_A_ (W)w);
944		1620
945	fd_change (w->fd);	1621	fd_change (EV_A_ w->fd, 0);
946	}	1622	}
947		1623
948	void	1624	void noinline
949	ev_timer_start (struct ev_timer *w)	1625	ev_timer_start (EV_P_ ev_timer *w)
950	{	1626	{
951	if (ev_is_active (w))	1627	if (expect_false (ev_is_active (w)))
952	return;	1628	return;
953		1629
954	w->at += now;	1630	((WT)w)->at += mn_now;
955		1631
956	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
957		1633
958	ev_start ((W)w, ++timercnt);	1634	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
960	timers [timercnt - 1] = w;	1636	timers [timercnt - 1] = (WT)w;
961	upheap ((WT *)timers, timercnt - 1);	1637	upheap (timers, timercnt - 1);
962	}
963		1638
964	void	1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1640	}
		1641
		1642	void noinline
965	ev_timer_stop (struct ev_timer *w)	1643	ev_timer_stop (EV_P_ ev_timer *w)
966	{	1644	{
967	ev_clear_pending ((W)w);	1645	clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1646	if (expect_false (!ev_is_active (w)))
969	return;	1647	return;
970		1648
971	if (w->active < timercnt--)	1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1650
		1651	{
		1652	int active = ((W)w)->active;
		1653
		1654	if (expect_true (--active < --timercnt))
972	{	1655	{
973	timers [w->active - 1] = timers [timercnt];	1656	timers [active] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1657	adjustheap (timers, timercnt, active);
975	}	1658	}
		1659	}
976		1660
977	w->at = w->repeat;	1661	((WT)w)->at -= mn_now;
978		1662
979	ev_stop ((W)w);	1663	ev_stop (EV_A_ (W)w);
980	}	1664	}
981		1665
982	void	1666	void noinline
983	ev_timer_again (struct ev_timer *w)	1667	ev_timer_again (EV_P_ ev_timer *w)
984	{	1668	{
985	if (ev_is_active (w))	1669	if (ev_is_active (w))
986	{	1670	{
987	if (w->repeat)	1671	if (w->repeat)
988	{	1672	{
989	w->at = now + w->repeat;	1673	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1674	adjustheap (timers, timercnt, ((W)w)->active - 1);
991	}	1675	}
992	else	1676	else
993	ev_timer_stop (w);	1677	ev_timer_stop (EV_A_ w);
994	}	1678	}
995	else if (w->repeat)	1679	else if (w->repeat)
		1680	{
		1681	w->at = w->repeat;
996	ev_timer_start (w);	1682	ev_timer_start (EV_A_ w);
		1683	}
997	}	1684	}
998		1685
999	void	1686	#if EV_PERIODIC_ENABLE
		1687	void noinline
1000	ev_periodic_start (struct ev_periodic *w)	1688	ev_periodic_start (EV_P_ ev_periodic *w)
1001	{	1689	{
1002	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1003	return;	1691	return;
1004		1692
		1693	if (w->reschedule_cb)
		1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1695	else if (w->interval)
		1696	{
1005	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1006
1007	/* this formula differs from the one in periodic_reify because we do not always round up */	1698	/* this formula differs from the one in periodic_reify because we do not always round up */
1008	if (w->interval)
1009	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1700	}
		1701	else
		1702	((WT)w)->at = w->offset;
1010		1703
1011	ev_start ((W)w, ++periodiccnt);	1704	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1013	periodics [periodiccnt - 1] = w;	1706	periodics [periodiccnt - 1] = (WT)w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1707	upheap (periodics, periodiccnt - 1);
1015	}
1016		1708
1017	void	1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1710	}
		1711
		1712	void noinline
1018	ev_periodic_stop (struct ev_periodic *w)	1713	ev_periodic_stop (EV_P_ ev_periodic *w)
1019	{	1714	{
1020	ev_clear_pending ((W)w);	1715	clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1716	if (expect_false (!ev_is_active (w)))
1022	return;	1717	return;
1023		1718
1024	if (w->active < periodiccnt--)	1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1720
		1721	{
		1722	int active = ((W)w)->active;
		1723
		1724	if (expect_true (--active < --periodiccnt))
1025	{	1725	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1726	periodics [active] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1727	adjustheap (periodics, periodiccnt, active);
1028	}	1728	}
		1729	}
1029		1730
1030	ev_stop ((W)w);	1731	ev_stop (EV_A_ (W)w);
1031	}	1732	}
		1733
		1734	void noinline
		1735	ev_periodic_again (EV_P_ ev_periodic *w)
		1736	{
		1737	/* TODO: use adjustheap and recalculation */
		1738	ev_periodic_stop (EV_A_ w);
		1739	ev_periodic_start (EV_A_ w);
		1740	}
		1741	#endif
1032		1742
1033	#ifndef SA_RESTART	1743	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1744	# define SA_RESTART 0
1035	#endif	1745	#endif
1036		1746
1037	void	1747	void noinline
1038	ev_signal_start (struct ev_signal *w)	1748	ev_signal_start (EV_P_ ev_signal *w)
1039	{	1749	{
		1750	#if EV_MULTIPLICITY
		1751	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1752	#endif
1040	if (ev_is_active (w))	1753	if (expect_false (ev_is_active (w)))
1041	return;	1754	return;
1042		1755
1043	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1044		1757
1045	ev_start ((W)w, 1);	1758	{
		1759	#ifndef _WIN32
		1760	sigset_t full, prev;
		1761	sigfillset (&full);
		1762	sigprocmask (SIG_SETMASK, &full, &prev);
		1763	#endif
		1764
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1766
		1767	#ifndef _WIN32
		1768	sigprocmask (SIG_SETMASK, &prev, 0);
		1769	#endif
		1770	}
		1771
		1772	ev_start (EV_A_ (W)w, 1);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_add (&signals [w->signum - 1].head, (WL)w);
1048		1774
1049	if (!w->next)	1775	if (!((WL)w)->next)
1050	{	1776	{
		1777	#if _WIN32
		1778	signal (w->signum, sighandler);
		1779	#else
1051	struct sigaction sa;	1780	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1781	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1782	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1783	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1784	sigaction (w->signum, &sa, 0);
		1785	#endif
1056	}	1786	}
1057	}	1787	}
1058		1788
1059	void	1789	void noinline
1060	ev_signal_stop (struct ev_signal *w)	1790	ev_signal_stop (EV_P_ ev_signal *w)
1061	{	1791	{
1062	ev_clear_pending ((W)w);	1792	clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1793	if (expect_false (!ev_is_active (w)))
1064	return;	1794	return;
1065		1795
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1796	wlist_del (&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1797	ev_stop (EV_A_ (W)w);
1068		1798
1069	if (!signals [w->signum - 1].head)	1799	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1800	signal (w->signum, SIG_DFL);
1071	}	1801	}
1072		1802
1073	void	1803	void
1074	ev_idle_start (struct ev_idle *w)	1804	ev_child_start (EV_P_ ev_child *w)
1075	{	1805	{
		1806	#if EV_MULTIPLICITY
		1807	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1808	#endif
1076	if (ev_is_active (w))	1809	if (expect_false (ev_is_active (w)))
1077	return;	1810	return;
1078		1811
1079	ev_start ((W)w, ++idlecnt);	1812	ev_start (EV_A_ (W)w, 1);
1080	array_needsize (idles, idlemax, idlecnt, );	1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1081	idles [idlecnt - 1] = w;
1082	}	1814	}
1083		1815
1084	void	1816	void
1085	ev_idle_stop (struct ev_idle *w)	1817	ev_child_stop (EV_P_ ev_child *w)
1086	{	1818	{
1087	ev_clear_pending ((W)w);	1819	clear_pending (EV_A_ (W)w);
1088	if (ev_is_active (w))	1820	if (expect_false (!ev_is_active (w)))
1089	return;	1821	return;
1090		1822
1091	idles [w->active - 1] = idles [--idlecnt];	1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1092	ev_stop ((W)w);	1824	ev_stop (EV_A_ (W)w);
1093	}	1825	}
1094		1826
		1827	#if EV_STAT_ENABLE
		1828
		1829	# ifdef _WIN32
		1830	# undef lstat
		1831	# define lstat(a,b) _stati64 (a,b)
		1832	# endif
		1833
		1834	#define DEF_STAT_INTERVAL 5.0074891
		1835	#define MIN_STAT_INTERVAL 0.1074891
		1836
		1837	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1838
		1839	#if EV_USE_INOTIFY
		1840	# define EV_INOTIFY_BUFSIZE 8192
		1841
		1842	static void noinline
		1843	infy_add (EV_P_ ev_stat *w)
		1844	{
		1845	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);
		1846
		1847	if (w->wd < 0)
		1848	{
		1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1850
		1851	/* monitor some parent directory for speedup hints */
		1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1853	{
		1854	char path [4096];
		1855	strcpy (path, w->path);
		1856
		1857	do
		1858	{
		1859	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1860	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1861
		1862	char *pend = strrchr (path, '/');
		1863
		1864	if (!pend)
		1865	break; /* whoops, no '/', complain to your admin */
		1866
		1867	*pend = 0;
		1868	w->wd = inotify_add_watch (fs_fd, path, mask);
		1869	}
		1870	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1871	}
		1872	}
		1873	else
		1874	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1875
		1876	if (w->wd >= 0)
		1877	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1878	}
		1879
		1880	static void noinline
		1881	infy_del (EV_P_ ev_stat *w)
		1882	{
		1883	int slot;
		1884	int wd = w->wd;
		1885
		1886	if (wd < 0)
		1887	return;
		1888
		1889	w->wd = -2;
		1890	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1891	wlist_del (&fs_hash [slot].head, (WL)w);
		1892
		1893	/* remove this watcher, if others are watching it, they will rearm */
		1894	inotify_rm_watch (fs_fd, wd);
		1895	}
		1896
		1897	static void noinline
		1898	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1899	{
		1900	if (slot < 0)
		1901	/* overflow, need to check for all hahs slots */
		1902	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1903	infy_wd (EV_A_ slot, wd, ev);
		1904	else
		1905	{
		1906	WL w_;
		1907
		1908	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1909	{
		1910	ev_stat *w = (ev_stat *)w_;
		1911	w_ = w_->next; /* lets us remove this watcher and all before it */
		1912
		1913	if (w->wd == wd || wd == -1)
		1914	{
		1915	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1916	{
		1917	w->wd = -1;
		1918	infy_add (EV_A_ w); /* re-add, no matter what */
		1919	}
		1920
		1921	stat_timer_cb (EV_A_ &w->timer, 0);
		1922	}
		1923	}
		1924	}
		1925	}
		1926
		1927	static void
		1928	infy_cb (EV_P_ ev_io *w, int revents)
		1929	{
		1930	char buf [EV_INOTIFY_BUFSIZE];
		1931	struct inotify_event *ev = (struct inotify_event *)buf;
		1932	int ofs;
		1933	int len = read (fs_fd, buf, sizeof (buf));
		1934
		1935	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1936	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1937	}
		1938
		1939	void inline_size
		1940	infy_init (EV_P)
		1941	{
		1942	if (fs_fd != -2)
		1943	return;
		1944
		1945	fs_fd = inotify_init ();
		1946
		1947	if (fs_fd >= 0)
		1948	{
		1949	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1950	ev_set_priority (&fs_w, EV_MAXPRI);
		1951	ev_io_start (EV_A_ &fs_w);
		1952	}
		1953	}
		1954
		1955	void inline_size
		1956	infy_fork (EV_P)
		1957	{
		1958	int slot;
		1959
		1960	if (fs_fd < 0)
		1961	return;
		1962
		1963	close (fs_fd);
		1964	fs_fd = inotify_init ();
		1965
		1966	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1967	{
		1968	WL w_ = fs_hash [slot].head;
		1969	fs_hash [slot].head = 0;
		1970
		1971	while (w_)
		1972	{
		1973	ev_stat *w = (ev_stat *)w_;
		1974	w_ = w_->next; /* lets us add this watcher */
		1975
		1976	w->wd = -1;
		1977
		1978	if (fs_fd >= 0)
		1979	infy_add (EV_A_ w); /* re-add, no matter what */
		1980	else
		1981	ev_timer_start (EV_A_ &w->timer);
		1982	}
		1983
		1984	}
		1985	}
		1986
		1987	#endif
		1988
1095	void	1989	void
		1990	ev_stat_stat (EV_P_ ev_stat *w)
		1991	{
		1992	if (lstat (w->path, &w->attr) < 0)
		1993	w->attr.st_nlink = 0;
		1994	else if (!w->attr.st_nlink)
		1995	w->attr.st_nlink = 1;
		1996	}
		1997
		1998	static void noinline
		1999	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2000	{
		2001	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2002
		2003	/* we copy this here each the time so that */
		2004	/* prev has the old value when the callback gets invoked */
		2005	w->prev = w->attr;
		2006	ev_stat_stat (EV_A_ w);
		2007
		2008	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2009	if (
		2010	w->prev.st_dev != w->attr.st_dev
		2011	|| w->prev.st_ino != w->attr.st_ino
		2012	|| w->prev.st_mode != w->attr.st_mode
		2013	|| w->prev.st_nlink != w->attr.st_nlink
		2014	|| w->prev.st_uid != w->attr.st_uid
		2015	|| w->prev.st_gid != w->attr.st_gid
		2016	|| w->prev.st_rdev != w->attr.st_rdev
		2017	|| w->prev.st_size != w->attr.st_size
		2018	|| w->prev.st_atime != w->attr.st_atime
		2019	|| w->prev.st_mtime != w->attr.st_mtime
		2020	|| w->prev.st_ctime != w->attr.st_ctime
		2021	) {
		2022	#if EV_USE_INOTIFY
		2023	infy_del (EV_A_ w);
		2024	infy_add (EV_A_ w);
		2025	ev_stat_stat (EV_A_ w); /* avoid race... */
		2026	#endif
		2027
		2028	ev_feed_event (EV_A_ w, EV_STAT);
		2029	}
		2030	}
		2031
		2032	void
		2033	ev_stat_start (EV_P_ ev_stat *w)
		2034	{
		2035	if (expect_false (ev_is_active (w)))
		2036	return;
		2037
		2038	/* since we use memcmp, we need to clear any padding data etc. */
		2039	memset (&w->prev, 0, sizeof (ev_statdata));
		2040	memset (&w->attr, 0, sizeof (ev_statdata));
		2041
		2042	ev_stat_stat (EV_A_ w);
		2043
		2044	if (w->interval < MIN_STAT_INTERVAL)
		2045	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2046
		2047	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2048	ev_set_priority (&w->timer, ev_priority (w));
		2049
		2050	#if EV_USE_INOTIFY
		2051	infy_init (EV_A);
		2052
		2053	if (fs_fd >= 0)
		2054	infy_add (EV_A_ w);
		2055	else
		2056	#endif
		2057	ev_timer_start (EV_A_ &w->timer);
		2058
		2059	ev_start (EV_A_ (W)w, 1);
		2060	}
		2061
		2062	void
		2063	ev_stat_stop (EV_P_ ev_stat *w)
		2064	{
		2065	clear_pending (EV_A_ (W)w);
		2066	if (expect_false (!ev_is_active (w)))
		2067	return;
		2068
		2069	#if EV_USE_INOTIFY
		2070	infy_del (EV_A_ w);
		2071	#endif
		2072	ev_timer_stop (EV_A_ &w->timer);
		2073
		2074	ev_stop (EV_A_ (W)w);
		2075	}
		2076	#endif
		2077
		2078	#if EV_IDLE_ENABLE
		2079	void
		2080	ev_idle_start (EV_P_ ev_idle *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	pri_adjust (EV_A_ (W)w);
		2086
		2087	{
		2088	int active = ++idlecnt [ABSPRI (w)];
		2089
		2090	++idleall;
		2091	ev_start (EV_A_ (W)w, active);
		2092
		2093	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2094	idles [ABSPRI (w)][active - 1] = w;
		2095	}
		2096	}
		2097
		2098	void
		2099	ev_idle_stop (EV_P_ ev_idle *w)
		2100	{
		2101	clear_pending (EV_A_ (W)w);
		2102	if (expect_false (!ev_is_active (w)))
		2103	return;
		2104
		2105	{
		2106	int active = ((W)w)->active;
		2107
		2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2109	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2110
		2111	ev_stop (EV_A_ (W)w);
		2112	--idleall;
		2113	}
		2114	}
		2115	#endif
		2116
		2117	void
1096	ev_prepare_start (struct ev_prepare *w)	2118	ev_prepare_start (EV_P_ ev_prepare *w)
1097	{	2119	{
1098	if (ev_is_active (w))	2120	if (expect_false (ev_is_active (w)))
1099	return;	2121	return;
1100		2122
1101	ev_start ((W)w, ++preparecnt);	2123	ev_start (EV_A_ (W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );	2124	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1103	prepares [preparecnt - 1] = w;	2125	prepares [preparecnt - 1] = w;
1104	}	2126	}
1105		2127
1106	void	2128	void
1107	ev_prepare_stop (struct ev_prepare *w)	2129	ev_prepare_stop (EV_P_ ev_prepare *w)
1108	{	2130	{
1109	ev_clear_pending ((W)w);	2131	clear_pending (EV_A_ (W)w);
1110	if (ev_is_active (w))	2132	if (expect_false (!ev_is_active (w)))
1111	return;	2133	return;
1112		2134
		2135	{
		2136	int active = ((W)w)->active;
1113	prepares [w->active - 1] = prepares [--preparecnt];	2137	prepares [active - 1] = prepares [--preparecnt];
		2138	((W)prepares [active - 1])->active = active;
		2139	}
		2140
1114	ev_stop ((W)w);	2141	ev_stop (EV_A_ (W)w);
1115	}	2142	}
1116		2143
1117	void	2144	void
1118	ev_check_start (struct ev_check *w)	2145	ev_check_start (EV_P_ ev_check *w)
1119	{	2146	{
1120	if (ev_is_active (w))	2147	if (expect_false (ev_is_active (w)))
1121	return;	2148	return;
1122		2149
1123	ev_start ((W)w, ++checkcnt);	2150	ev_start (EV_A_ (W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );	2151	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1125	checks [checkcnt - 1] = w;	2152	checks [checkcnt - 1] = w;
1126	}	2153	}
1127		2154
1128	void	2155	void
1129	ev_check_stop (struct ev_check *w)	2156	ev_check_stop (EV_P_ ev_check *w)
1130	{	2157	{
1131	ev_clear_pending ((W)w);	2158	clear_pending (EV_A_ (W)w);
1132	if (ev_is_active (w))	2159	if (expect_false (!ev_is_active (w)))
1133	return;	2160	return;
1134		2161
		2162	{
		2163	int active = ((W)w)->active;
1135	checks [w->active - 1] = checks [--checkcnt];	2164	checks [active - 1] = checks [--checkcnt];
		2165	((W)checks [active - 1])->active = active;
		2166	}
		2167
1136	ev_stop ((W)w);	2168	ev_stop (EV_A_ (W)w);
1137	}	2169	}
1138		2170
1139	void	2171	#if EV_EMBED_ENABLE
1140	ev_child_start (struct ev_child *w)	2172	void noinline
		2173	ev_embed_sweep (EV_P_ ev_embed *w)
1141	{	2174	{
		2175	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2176	}
		2177
		2178	static void
		2179	embed_cb (EV_P_ ev_io *io, int revents)
		2180	{
		2181	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2182
1142	if (ev_is_active (w))	2183	if (ev_cb (w))
1143	return;	2184	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2185	else
		2186	ev_embed_sweep (loop, w);
		2187	}
1144		2188
		2189	void
		2190	ev_embed_start (EV_P_ ev_embed *w)
		2191	{
		2192	if (expect_false (ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	struct ev_loop *loop = w->loop;
		2197	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2198	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2199	}
		2200
		2201	ev_set_priority (&w->io, ev_priority (w));
		2202	ev_io_start (EV_A_ &w->io);
		2203
1145	ev_start ((W)w, 1);	2204	ev_start (EV_A_ (W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}	2205	}
1148		2206
1149	void	2207	void
1150	ev_child_stop (struct ev_child *w)	2208	ev_embed_stop (EV_P_ ev_embed *w)
1151	{	2209	{
1152	ev_clear_pending ((W)w);	2210	clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))	2211	if (expect_false (!ev_is_active (w)))
1154	return;	2212	return;
1155		2213
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2214	ev_io_stop (EV_A_ &w->io);
		2215
1157	ev_stop ((W)w);	2216	ev_stop (EV_A_ (W)w);
1158	}	2217	}
		2218	#endif
		2219
		2220	#if EV_FORK_ENABLE
		2221	void
		2222	ev_fork_start (EV_P_ ev_fork *w)
		2223	{
		2224	if (expect_false (ev_is_active (w)))
		2225	return;
		2226
		2227	ev_start (EV_A_ (W)w, ++forkcnt);
		2228	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2229	forks [forkcnt - 1] = w;
		2230	}
		2231
		2232	void
		2233	ev_fork_stop (EV_P_ ev_fork *w)
		2234	{
		2235	clear_pending (EV_A_ (W)w);
		2236	if (expect_false (!ev_is_active (w)))
		2237	return;
		2238
		2239	{
		2240	int active = ((W)w)->active;
		2241	forks [active - 1] = forks [--forkcnt];
		2242	((W)forks [active - 1])->active = active;
		2243	}
		2244
		2245	ev_stop (EV_A_ (W)w);
		2246	}
		2247	#endif
1159		2248
1160	/*****************************************************************************/	2249	/*****************************************************************************/
1161		2250
1162	struct ev_once	2251	struct ev_once
1163	{	2252	{
1164	struct ev_io io;	2253	ev_io io;
1165	struct ev_timer to;	2254	ev_timer to;
1166	void (*cb)(int revents, void *arg);	2255	void (*cb)(int revents, void *arg);
1167	void *arg;	2256	void *arg;
1168	};	2257	};
1169		2258
1170	static void	2259	static void
1171	once_cb (struct ev_once *once, int revents)	2260	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	2261	{
1173	void (*cb)(int revents, void *arg) = once->cb;	2262	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	2263	void *arg = once->arg;
1175		2264
1176	ev_io_stop (&once->io);	2265	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	2266	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	2267	ev_free (once);
1179		2268
1180	cb (revents, arg);	2269	cb (revents, arg);
1181	}	2270	}
1182		2271
1183	static void	2272	static void
1184	once_cb_io (struct ev_io *w, int revents)	2273	once_cb_io (EV_P_ ev_io *w, int revents)
1185	{	2274	{
1186	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2275	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1187	}	2276	}
1188		2277
1189	static void	2278	static void
1190	once_cb_to (struct ev_timer *w, int revents)	2279	once_cb_to (EV_P_ ev_timer *w, int revents)
1191	{	2280	{
1192	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1193	}	2282	}
1194		2283
1195	void	2284	void
1196	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2285	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1197	{	2286	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	2287	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1199		2288
1200	if (!once)	2289	if (expect_false (!once))
		2290	{
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2291	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1202	else	2292	return;
1203	{	2293	}
		2294
1204	once->cb = cb;	2295	once->cb = cb;
1205	once->arg = arg;	2296	once->arg = arg;
1206		2297
1207	ev_watcher_init (&once->io, once_cb_io);	2298	ev_init (&once->io, once_cb_io);
1208	if (fd >= 0)	2299	if (fd >= 0)
1209	{	2300	{
1210	ev_io_set (&once->io, fd, events);	2301	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	2302	ev_io_start (EV_A_ &once->io);
1212	}	2303	}
1213		2304
1214	ev_watcher_init (&once->to, once_cb_to);	2305	ev_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	2306	if (timeout >= 0.)
1216	{	2307	{
1217	ev_timer_set (&once->to, timeout, 0.);	2308	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	2309	ev_timer_start (EV_A_ &once->to);
1219	}
1220	}
1221	}
1222
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{	2310	}
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}	2311	}
1300		2312
		2313	#ifdef __cplusplus
		2314	}
1301	#endif	2315	#endif
1302		2316
1303
1304
1305

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