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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 1.185 by root, Fri Dec 14 18:22:30 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_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
		216	#if EV_SELECT_IS_WINSOCKET
		217	# include <winsock.h>
		218	#endif
		219
91	/**/	220	/**/
92		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#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) */	233	#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 */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97		235
98	#include "ev.h"
99
100	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
101	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	238	# define noinline __attribute__ ((noinline))
103	#else	239	#else
104	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
105	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
106	#endif	245	#endif
107		246
108	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
110		256
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
114	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
117		266
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		268
		269	#ifdef _WIN32
		270	# include "ev_win32.c"
		271	#endif
		272
120	/*****************************************************************************/	273	/*****************************************************************************/
121		274
		275	static void (*syserr_cb)(const char *msg);
		276
		277	void
		278	ev_set_syserr_cb (void (*cb)(const char *msg))
		279	{
		280	syserr_cb = cb;
		281	}
		282
		283	static void noinline
		284	syserr (const char *msg)
		285	{
		286	if (!msg)
		287	msg = "(libev) system error";
		288
		289	if (syserr_cb)
		290	syserr_cb (msg);
		291	else
		292	{
		293	perror (msg);
		294	abort ();
		295	}
		296	}
		297
		298	static void *(*alloc)(void *ptr, long size);
		299
		300	void
		301	ev_set_allocator (void *(*cb)(void *ptr, long size))
		302	{
		303	alloc = cb;
		304	}
		305
		306	inline_speed void *
		307	ev_realloc (void *ptr, long size)
		308	{
		309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		310
		311	if (!ptr && size)
		312	{
		313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		314	abort ();
		315	}
		316
		317	return ptr;
		318	}
		319
		320	#define ev_malloc(size) ev_realloc (0, (size))
		321	#define ev_free(ptr) ev_realloc ((ptr), 0)
		322
		323	/*****************************************************************************/
		324
122	typedef struct	325	typedef struct
123	{	326	{
124	struct ev_watcher_list *head;	327	WL head;
125	unsigned char events;	328	unsigned char events;
126	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
127	} ANFD;	333	} ANFD;
128		334
129	typedef struct	335	typedef struct
130	{	336	{
131	W w;	337	W w;
132	int events;	338	int events;
133	} ANPENDING;	339	} ANPENDING;
134		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
135	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
136		349
137	struct ev_loop	350	struct ev_loop
138	{	351	{
		352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	355	#include "ev_vars.h"
141	};
142	# undef VAR	356	#undef VAR
		357	};
143	# include "ev_wrap.h"	358	#include "ev_wrap.h"
		359
		360	static struct ev_loop default_loop_struct;
		361	struct ev_loop *ev_default_loop_ptr;
144		362
145	#else	363	#else
146		364
		365	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	367	#include "ev_vars.h"
149	# undef VAR	368	#undef VAR
		369
		370	static int ev_default_loop_ptr;
150		371
151	#endif	372	#endif
152		373
153	/*****************************************************************************/	374	/*****************************************************************************/
154		375
155	inline ev_tstamp	376	ev_tstamp
156	ev_time (void)	377	ev_time (void)
157	{	378	{
158	#if EV_USE_REALTIME	379	#if EV_USE_REALTIME
159	struct timespec ts;	380	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	381	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	387	#endif
167	}	388	}
168		389
169	inline ev_tstamp	390	ev_tstamp inline_size
170	get_clock (void)	391	get_clock (void)
171	{	392	{
172	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
174	{	395	{
…		…
179	#endif	400	#endif
180		401
181	return ev_time ();	402	return ev_time ();
182	}	403	}
183		404
		405	#if EV_MULTIPLICITY
184	ev_tstamp	406	ev_tstamp
185	ev_now (EV_P)	407	ev_now (EV_P)
186	{	408	{
187	return rt_now;	409	return ev_rt_now;
188	}	410	}
		411	#endif
189		412
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
191		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
		440
192	#define array_needsize(base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
194	{ \	443	{ \
195	int newcnt = cur; \	444	int ocur_ = (cur); \
196	do \	445	(base) = (type *)array_realloc \
197	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
198	newcnt = array_roundsize (base, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
199	} \	448	}
200	while ((cnt) > newcnt); \	449
		450	#if 0
		451	#define array_slim(type,stem) \
		452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201	\	453	{ \
202	base = realloc (base, sizeof (*base) * (newcnt)); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
203	init (base + cur, newcnt - cur); \	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204	cur = newcnt; \	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205	}	457	}
		458	#endif
		459
		460	#define array_free(stem, idx) \
		461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		462
207	/*****************************************************************************/	463	/*****************************************************************************/
208		464
209	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
210	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
211	{	495	{
212	while (count--)	496	while (count--)
213	{	497	{
214	base->head = 0;	498	base->head = 0;
…		…
217		501
218	++base;	502	++base;
219	}	503	}
220	}	504	}
221		505
222	static void	506	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)	507	fd_event (EV_P_ int fd, int revents)
248	{	508	{
249	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	510	ev_io *w;
251		511
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	513	{
254	int ev = w->events & events;	514	int ev = w->events & revents;
255		515
256	if (ev)	516	if (ev)
257	event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
258	}	518	}
259	}	519	}
260		520
261	/*****************************************************************************/	521	void
		522	ev_feed_fd_event (EV_P_ int fd, int revents)
		523	{
		524	if (fd >= 0 && fd < anfdmax)
		525	fd_event (EV_A_ fd, revents);
		526	}
262		527
263	static void	528	void inline_size
264	fd_reify (EV_P)	529	fd_reify (EV_P)
265	{	530	{
266	int i;	531	int i;
267		532
268	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
269	{	534	{
270	int fd = fdchanges [i];	535	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	537	ev_io *w;
273		538
274	int events = 0;	539	unsigned char events = 0;
275		540
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	542	events |= (unsigned char)w->events;
278		543
279	anfd->reify = 0;	544	#if EV_SELECT_IS_WINSOCKET
280		545	if (events)
281	if (anfd->events != events)
282	{	546	{
283	method_modify (EV_A_ fd, anfd->events, events);	547	unsigned long argp;
284	anfd->events = events;	548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285	}	550	}
		551	#endif
		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
		557	anfd->reify = 0;
		558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
286	}	563	}
287		564
288	fdchangecnt = 0;	565	fdchangecnt = 0;
289	}	566	}
290		567
291	static void	568	void inline_size
292	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
293	{	570	{
294	if (anfds [fd].reify || fdchangecnt < 0)	571	unsigned char reify = anfds [fd].reify;
295	return;
296
297	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
298		573
		574	if (expect_true (!reify))
		575	{
299	++fdchangecnt;	576	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
302	}	580	}
303		581
304	static void	582	void inline_speed
305	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
306	{	584	{
307	struct ev_io *w;	585	ev_io *w;
308		586
309	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
310	{	588	{
311	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	591	}
		592	}
		593
		594	int inline_size
		595	fd_valid (int fd)
		596	{
		597	#ifdef _WIN32
		598	return _get_osfhandle (fd) != -1;
		599	#else
		600	return fcntl (fd, F_GETFD) != -1;
		601	#endif
314	}	602	}
315		603
316	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
317	static void	605	static void noinline
318	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
319	{	607	{
320	int fd;	608	int fd;
321		609
322	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	611	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
326	}	614	}
327		615
328	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	617	static void noinline
330	fd_enomem (EV_P)	618	fd_enomem (EV_P)
331	{	619	{
332	int fd = anfdmax;	620	int fd;
333		621
334	while (fd--)	622	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	623	if (anfds [fd].events)
336	{	624	{
337	close (fd);
338	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
339	return;	626	return;
340	}	627	}
341	}	628	}
342		629
		630	/* usually called after fork if backend needs to re-arm all fds from scratch */
		631	static void noinline
		632	fd_rearm_all (EV_P)
		633	{
		634	int fd;
		635
		636	for (fd = 0; fd < anfdmax; ++fd)
		637	if (anfds [fd].events)
		638	{
		639	anfds [fd].events = 0;
		640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
		641	}
		642	}
		643
343	/*****************************************************************************/	644	/*****************************************************************************/
344		645
345	static void	646	void inline_speed
346	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
347	{	648	{
348	WT w = heap [k];	649	WT w = heap [k];
349		650
350	while (k && heap [k >> 1]->at > w->at)	651	while (k)
351	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
352	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
353	heap [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
354	k >>= 1;	660	k = p;
355	}	661	}
356		662
357	heap [k] = w;	663	heap [k] = w;
358	heap [k]->active = k + 1;	664	((W)heap [k])->active = k + 1;
359
360	}	665	}
361		666
362	static void	667	void inline_speed
363	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
364	{	669	{
365	WT w = heap [k];	670	WT w = heap [k];
366		671
367	while (k < (N >> 1))	672	for (;;)
368	{	673	{
369	int j = k << 1;	674	int c = (k << 1) + 1;
370		675
371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
372	++j;
373
374	if (w->at <= heap [j]->at)
375	break;	677	break;
376		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
377	heap [k] = heap [j];	685	heap [k] = heap [c];
378	heap [k]->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
379	k = j;	688	k = c;
380	}	689	}
381		690
382	heap [k] = w;	691	heap [k] = w;
383	heap [k]->active = k + 1;	692	((W)heap [k])->active = k + 1;
		693	}
		694
		695	void inline_size
		696	adjustheap (WT *heap, int N, int k)
		697	{
		698	upheap (heap, k);
		699	downheap (heap, N, k);
384	}	700	}
385		701
386	/*****************************************************************************/	702	/*****************************************************************************/
387		703
388	typedef struct	704	typedef struct
389	{	705	{
390	struct ev_watcher_list *head;	706	WL head;
391	sig_atomic_t volatile gotsig;	707	sig_atomic_t volatile gotsig;
392	} ANSIG;	708	} ANSIG;
393		709
394	static ANSIG *signals;	710	static ANSIG *signals;
395	static int signalmax;	711	static int signalmax;
396		712
397	static int sigpipe [2];	713	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
		715	static ev_io sigev;
399		716
400	static void	717	void inline_size
401	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
402	{	719	{
403	while (count--)	720	while (count--)
404	{	721	{
405	base->head = 0;	722	base->head = 0;
…		…
410	}	727	}
411		728
412	static void	729	static void
413	sighandler (int signum)	730	sighandler (int signum)
414	{	731	{
		732	#if _WIN32
		733	signal (signum, sighandler);
		734	#endif
		735
415	signals [signum - 1].gotsig = 1;	736	signals [signum - 1].gotsig = 1;
416		737
417	if (!gotsig)	738	if (!gotsig)
418	{	739	{
419	int old_errno = errno;	740	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	743	errno = old_errno;
423	}	744	}
424	}	745	}
425		746
		747	void noinline
		748	ev_feed_signal_event (EV_P_ int signum)
		749	{
		750	WL w;
		751
		752	#if EV_MULTIPLICITY
		753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		754	#endif
		755
		756	--signum;
		757
		758	if (signum < 0 || signum >= signalmax)
		759	return;
		760
		761	signals [signum].gotsig = 0;
		762
		763	for (w = signals [signum].head; w; w = w->next)
		764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		765	}
		766
426	static void	767	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
428	{	769	{
429	struct ev_watcher_list *w;
430	int signum;	770	int signum;
431		771
432	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	773	gotsig = 0;
434		774
435	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
437	{	777	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	}	778	}
444		779
445	static void	780	void inline_speed
		781	fd_intern (int fd)
		782	{
		783	#ifdef _WIN32
		784	int arg = 1;
		785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		786	#else
		787	fcntl (fd, F_SETFD, FD_CLOEXEC);
		788	fcntl (fd, F_SETFL, O_NONBLOCK);
		789	#endif
		790	}
		791
		792	static void noinline
446	siginit (EV_P)	793	siginit (EV_P)
447	{	794	{
448	#ifndef WIN32	795	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	796	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		797
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	798	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	799	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	801	}
461		802
462	/*****************************************************************************/	803	/*****************************************************************************/
463		804
		805	static WL childs [EV_PID_HASHSIZE];
		806
464	#ifndef WIN32	807	#ifndef _WIN32
		808
		809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
465		825
466	#ifndef WCONTINUED	826	#ifndef WCONTINUED
467	# define WCONTINUED 0	827	# define WCONTINUED 0
468	#endif	828	#endif
469		829
470	static void	830	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)	831	childcb (EV_P_ ev_signal *sw, int revents)
487	{	832	{
488	int pid, status;	833	int pid, status;
489		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
492	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		845
495	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}
498	}	849	}
499		850
500	#endif	851	#endif
501		852
502	/*****************************************************************************/	853	/*****************************************************************************/
503		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
504	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
506	#endif	860	#endif
507	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	862	# include "ev_epoll.c"
509	#endif	863	#endif
510	#if EV_USEV_POLL	864	#if EV_USE_POLL
511	# include "ev_poll.c"	865	# include "ev_poll.c"
512	#endif	866	#endif
513	#if EV_USE_SELECT	867	#if EV_USE_SELECT
514	# include "ev_select.c"	868	# include "ev_select.c"
515	#endif	869	#endif
…		…
525	{	879	{
526	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
527	}	881	}
528		882
529	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	884	int inline_size
531	enable_secure (void)	885	enable_secure (void)
532	{	886	{
533	#ifdef WIN32	887	#ifdef _WIN32
534	return 0;	888	return 0;
535	#else	889	#else
536	return getuid () != geteuid ()	890	return getuid () != geteuid ()
537	|| getgid () != getegid ();	891	|| getgid () != getegid ();
538	#endif	892	#endif
539	}	893	}
540		894
541	int	895	unsigned int
542	ev_method (EV_P)	896	ev_supported_backends (void)
543	{	897	{
544	return method;	898	unsigned int flags = 0;
545	}
546		899
547	inline int	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
549	{	911	{
550	if (!method)	912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
		948	loop_init (EV_P_ unsigned int flags)
		949	{
		950	if (!backend)
551	{	951	{
552	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
553	{	953	{
554	struct timespec ts;	954	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	956	have_monotonic = 1;
557	}	957	}
558	#endif	958	#endif
559		959
560	rt_now = ev_time ();	960	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	961	mn_now = get_clock ();
562	now_floor = mn_now;	962	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
564		964
565	if (pipe (sigpipe))	965	/* pid check not overridable via env */
566	return 0;	966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
567		970
568	if (methods == EVMETHOD_AUTO)	971	if (!(flags & EVFLAG_NOENV)
569	if (!enable_secure () && getenv ("LIBmethodS"))	972	&& !enable_secure ()
570	methods = atoi (getenv ("LIBmethodS"));	973	&& getenv ("LIBEV_FLAGS"))
571	else	974	flags = atoi (getenv ("LIBEV_FLAGS"));
572	methods = EVMETHOD_ANY;
573		975
574	method = 0;	976	if (!(flags & 0x0000ffffUL))
		977	flags |= ev_recommended_backends ();
		978
		979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		987	#endif
575	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	990	#endif
578	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	993	#endif
581	#if EV_USEV_POLL	994	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	996	#endif
584	#if EV_USE_SELECT	997	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	999	#endif
587		1000
588	if (method)	1001	ev_init (&sigev, sigcb);
		1002	ev_set_priority (&sigev, EV_MAXPRI);
		1003	}
		1004	}
		1005
		1006	static void noinline
		1007	loop_destroy (EV_P)
		1008	{
		1009	int i;
		1010
		1011	#if EV_USE_INOTIFY
		1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1021	#endif
		1022	#if EV_USE_KQUEUE
		1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1024	#endif
		1025	#if EV_USE_EPOLL
		1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1027	#endif
		1028	#if EV_USE_POLL
		1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1030	#endif
		1031	#if EV_USE_SELECT
		1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1033	#endif
		1034
		1035	for (i = NUMPRI; i--; )
		1036	{
		1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	/* have to use the microsoft-never-gets-it-right macro */
		1044	array_free (fdchange, EMPTY);
		1045	array_free (timer, EMPTY);
		1046	#if EV_PERIODIC_ENABLE
		1047	array_free (periodic, EMPTY);
		1048	#endif
		1049	array_free (prepare, EMPTY);
		1050	array_free (check, EMPTY);
		1051
		1052	backend = 0;
		1053	}
		1054
		1055	void inline_size infy_fork (EV_P);
		1056
		1057	void inline_size
		1058	loop_fork (EV_P)
		1059	{
		1060	#if EV_USE_PORT
		1061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1062	#endif
		1063	#if EV_USE_KQUEUE
		1064	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1065	#endif
		1066	#if EV_USE_EPOLL
		1067	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1068	#endif
		1069	#if EV_USE_INOTIFY
		1070	infy_fork (EV_A);
		1071	#endif
		1072
		1073	if (ev_is_active (&sigev))
		1074	{
		1075	/* default loop */
		1076
		1077	ev_ref (EV_A);
		1078	ev_io_stop (EV_A_ &sigev);
		1079	close (sigpipe [0]);
		1080	close (sigpipe [1]);
		1081
		1082	while (pipe (sigpipe))
		1083	syserr ("(libev) error creating pipe");
		1084
		1085	siginit (EV_A);
		1086	}
		1087
		1088	postfork = 0;
		1089	}
		1090
		1091	#if EV_MULTIPLICITY
		1092	struct ev_loop *
		1093	ev_loop_new (unsigned int flags)
		1094	{
		1095	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1096
		1097	memset (loop, 0, sizeof (struct ev_loop));
		1098
		1099	loop_init (EV_A_ flags);
		1100
		1101	if (ev_backend (EV_A))
		1102	return loop;
		1103
		1104	return 0;
		1105	}
		1106
		1107	void
		1108	ev_loop_destroy (EV_P)
		1109	{
		1110	loop_destroy (EV_A);
		1111	ev_free (loop);
		1112	}
		1113
		1114	void
		1115	ev_loop_fork (EV_P)
		1116	{
		1117	postfork = 1;
		1118	}
		1119
		1120	#endif
		1121
		1122	#if EV_MULTIPLICITY
		1123	struct ev_loop *
		1124	ev_default_loop_init (unsigned int flags)
		1125	#else
		1126	int
		1127	ev_default_loop (unsigned int flags)
		1128	#endif
		1129	{
		1130	if (sigpipe [0] == sigpipe [1])
		1131	if (pipe (sigpipe))
		1132	return 0;
		1133
		1134	if (!ev_default_loop_ptr)
		1135	{
		1136	#if EV_MULTIPLICITY
		1137	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1138	#else
		1139	ev_default_loop_ptr = 1;
		1140	#endif
		1141
		1142	loop_init (EV_A_ flags);
		1143
		1144	if (ev_backend (EV_A))
589	{	1145	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1146	siginit (EV_A);
593		1147
594	#ifndef WIN32	1148	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1149	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1150	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1151	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1152	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1153	#endif
600	}	1154	}
		1155	else
		1156	ev_default_loop_ptr = 0;
601	}	1157	}
602		1158
603	return method;	1159	return ev_default_loop_ptr;
604	}	1160	}
605		1161
		1162	void
		1163	ev_default_destroy (void)
		1164	{
606	#if EV_MULTIPLICITY	1165	#if EV_MULTIPLICITY
607		1166	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	1167	#endif
		1168
		1169	#ifndef _WIN32
		1170	ev_ref (EV_A); /* child watcher */
		1171	ev_signal_stop (EV_A_ &childev);
		1172	#endif
		1173
		1174	ev_ref (EV_A); /* signal watcher */
		1175	ev_io_stop (EV_A_ &sigev);
		1176
		1177	close (sigpipe [0]); sigpipe [0] = 0;
		1178	close (sigpipe [1]); sigpipe [1] = 0;
		1179
		1180	loop_destroy (EV_A);
		1181	}
		1182
		1183	void
		1184	ev_default_fork (void)
		1185	{
		1186	#if EV_MULTIPLICITY
		1187	struct ev_loop *loop = ev_default_loop_ptr;
		1188	#endif
		1189
		1190	if (backend)
		1191	postfork = 1;
		1192	}
637		1193
638	/*****************************************************************************/	1194	/*****************************************************************************/
639		1195
640	void	1196	void
641	ev_fork_prepare (void)	1197	ev_invoke (EV_P_ void *w, int revents)
642	{	1198	{
643	/* nop */	1199	EV_CB_INVOKE ((W)w, revents);
644	}	1200	}
645		1201
646	void	1202	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)	1203	call_pending (EV_P)
674	{	1204	{
675	int pri;	1205	int pri;
676		1206
677	for (pri = NUMPRI; pri--; )	1207	for (pri = NUMPRI; pri--; )
678	while (pendingcnt [pri])	1208	while (pendingcnt [pri])
679	{	1209	{
680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1210	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
681		1211
682	if (p->w)	1212	if (expect_true (p->w))
683	{	1213	{
		1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1215
684	p->w->pending = 0;	1216	p->w->pending = 0;
685	p->w->cb (EV_A_ p->w, p->events);	1217	EV_CB_INVOKE (p->w, p->events);
686	}	1218	}
687	}	1219	}
688	}	1220	}
689		1221
690	static void	1222	void inline_size
691	timers_reify (EV_P)	1223	timers_reify (EV_P)
692	{	1224	{
693	while (timercnt && timers [0]->at <= mn_now)	1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
694	{	1226	{
695	struct ev_timer *w = timers [0];	1227	ev_timer *w = (ev_timer *)timers [0];
		1228
		1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
696		1230
697	/* first reschedule or stop timer */	1231	/* first reschedule or stop timer */
698	if (w->repeat)	1232	if (w->repeat)
699	{	1233	{
700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1235
701	w->at = mn_now + w->repeat;	1236	((WT)w)->at += w->repeat;
		1237	if (((WT)w)->at < mn_now)
		1238	((WT)w)->at = mn_now;
		1239
702	downheap ((WT *)timers, timercnt, 0);	1240	downheap (timers, timercnt, 0);
703	}	1241	}
704	else	1242	else
705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706		1244
707	event (EV_A_ (W)w, EV_TIMEOUT);	1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
708	}	1246	}
709	}	1247	}
710		1248
711	static void	1249	#if EV_PERIODIC_ENABLE
		1250	void inline_size
712	periodics_reify (EV_P)	1251	periodics_reify (EV_P)
713	{	1252	{
714	while (periodiccnt && periodics [0]->at <= rt_now)	1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
715	{	1254	{
716	struct ev_periodic *w = periodics [0];	1255	ev_periodic *w = (ev_periodic *)periodics [0];
		1256
		1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
717		1258
718	/* first reschedule or stop timer */	1259	/* first reschedule or stop timer */
719	if (w->interval)	1260	if (w->reschedule_cb)
720	{	1261	{
		1262	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1264	downheap (periodics, periodiccnt, 0);
		1265	}
		1266	else if (w->interval)
		1267	{
721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1269	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
722	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1270	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);	1271	downheap (periodics, periodiccnt, 0);
724	}	1272	}
725	else	1273	else
726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727		1275
728	event (EV_A_ (W)w, EV_PERIODIC);	1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
729	}	1277	}
730	}	1278	}
731		1279
732	static void	1280	static void noinline
733	periodics_reschedule (EV_P)	1281	periodics_reschedule (EV_P)
734	{	1282	{
735	int i;	1283	int i;
736		1284
737	/* adjust periodics after time jump */	1285	/* adjust periodics after time jump */
738	for (i = 0; i < periodiccnt; ++i)	1286	for (i = 0; i < periodiccnt; ++i)
739	{	1287	{
740	struct ev_periodic *w = periodics [i];	1288	ev_periodic *w = (ev_periodic *)periodics [i];
741		1289
		1290	if (w->reschedule_cb)
		1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
742	if (w->interval)	1292	else if (w->interval)
		1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1294	}
		1295
		1296	/* now rebuild the heap */
		1297	for (i = periodiccnt >> 1; i--; )
		1298	downheap (periodics, periodiccnt, i);
		1299	}
		1300	#endif
		1301
		1302	#if EV_IDLE_ENABLE
		1303	void inline_size
		1304	idle_reify (EV_P)
		1305	{
		1306	if (expect_false (idleall))
		1307	{
		1308	int pri;
		1309
		1310	for (pri = NUMPRI; pri--; )
743	{	1311	{
744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1312	if (pendingcnt [pri])
		1313	break;
745		1314
746	if (fabs (diff) >= 1e-4)	1315	if (idlecnt [pri])
747	{	1316	{
748	ev_periodic_stop (EV_A_ w);	1317	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
749	ev_periodic_start (EV_A_ w);	1318	break;
750
751	i = 0; /* restart loop, inefficient, but time jumps should be rare */
752	}	1319	}
753	}	1320	}
754	}	1321	}
755	}	1322	}
		1323	#endif
756		1324
757	inline int	1325	void inline_speed
758	time_update_monotonic (EV_P)	1326	time_update (EV_P_ ev_tstamp max_block)
759	{
760	mn_now = get_clock ();
761
762	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
763	{
764	rt_now = rtmn_diff + mn_now;
765	return 0;
766	}
767	else
768	{
769	now_floor = mn_now;
770	rt_now = ev_time ();
771	return 1;
772	}
773	}
774
775	static void
776	time_update (EV_P)
777	{	1327	{
778	int i;	1328	int i;
779		1329
780	#if EV_USE_MONOTONIC	1330	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1331	if (expect_true (have_monotonic))
782	{	1332	{
783	if (time_update_monotonic (EV_A))	1333	ev_tstamp odiff = rtmn_diff;
		1334
		1335	mn_now = get_clock ();
		1336
		1337	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1338	/* interpolate in the meantime */
		1339	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
784	{	1340	{
785	ev_tstamp odiff = rtmn_diff;	1341	ev_rt_now = rtmn_diff + mn_now;
		1342	return;
		1343	}
786		1344
		1345	now_floor = mn_now;
		1346	ev_rt_now = ev_time ();
		1347
787	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1348	/* loop a few times, before making important decisions.
		1349	* on the choice of "4": one iteration isn't enough,
		1350	* in case we get preempted during the calls to
		1351	* ev_time and get_clock. a second call is almost guaranteed
		1352	* to succeed in that case, though. and looping a few more times
		1353	* doesn't hurt either as we only do this on time-jumps or
		1354	* in the unlikely event of having been preempted here.
		1355	*/
		1356	for (i = 4; --i; )
788	{	1357	{
789	rtmn_diff = rt_now - mn_now;	1358	rtmn_diff = ev_rt_now - mn_now;
790		1359
791	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
792	return; /* all is well */	1361	return; /* all is well */
793		1362
794	rt_now = ev_time ();	1363	ev_rt_now = ev_time ();
795	mn_now = get_clock ();	1364	mn_now = get_clock ();
796	now_floor = mn_now;	1365	now_floor = mn_now;
797	}	1366	}
798		1367
		1368	# if EV_PERIODIC_ENABLE
		1369	periodics_reschedule (EV_A);
		1370	# endif
		1371	/* no timer adjustment, as the monotonic clock doesn't jump */
		1372	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1373	}
		1374	else
		1375	#endif
		1376	{
		1377	ev_rt_now = ev_time ();
		1378
		1379	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1380	{
		1381	#if EV_PERIODIC_ENABLE
799	periodics_reschedule (EV_A);	1382	periodics_reschedule (EV_A);
800	/* no timer adjustment, as the monotonic clock doesn't jump */	1383	#endif
801	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1384	/* adjust timers. this is easy, as the offset is the same for all of them */
		1385	for (i = 0; i < timercnt; ++i)
		1386	((WT)timers [i])->at += ev_rt_now - mn_now;
802	}	1387	}
803	}
804	else
805	#endif
806	{
807	rt_now = ev_time ();
808		1388
809	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
810	{
811	periodics_reschedule (EV_A);
812
813	/* adjust timers. this is easy, as the offset is the same for all */
814	for (i = 0; i < timercnt; ++i)
815	timers [i]->at += rt_now - mn_now;
816	}
817
818	mn_now = rt_now;	1389	mn_now = ev_rt_now;
819	}	1390	}
820	}	1391	}
821		1392
822	void	1393	void
823	ev_ref (EV_P)	1394	ev_ref (EV_P)
…		…
834	static int loop_done;	1405	static int loop_done;
835		1406
836	void	1407	void
837	ev_loop (EV_P_ int flags)	1408	ev_loop (EV_P_ int flags)
838	{	1409	{
839	double block;
840	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1411	? EVUNLOOP_ONE
		1412	: EVUNLOOP_CANCEL;
		1413
		1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
841		1415
842	do	1416	do
843	{	1417	{
		1418	#ifndef _WIN32
		1419	if (expect_false (curpid)) /* penalise the forking check even more */
		1420	if (expect_false (getpid () != curpid))
		1421	{
		1422	curpid = getpid ();
		1423	postfork = 1;
		1424	}
		1425	#endif
		1426
		1427	#if EV_FORK_ENABLE
		1428	/* we might have forked, so queue fork handlers */
		1429	if (expect_false (postfork))
		1430	if (forkcnt)
		1431	{
		1432	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1433	call_pending (EV_A);
		1434	}
		1435	#endif
		1436
844	/* queue check watchers (and execute them) */	1437	/* queue prepare watchers (and execute them) */
845	if (expect_false (preparecnt))	1438	if (expect_false (preparecnt))
846	{	1439	{
847	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1440	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848	call_pending (EV_A);	1441	call_pending (EV_A);
849	}	1442	}
850		1443
		1444	if (expect_false (!activecnt))
		1445	break;
		1446
		1447	/* we might have forked, so reify kernel state if necessary */
		1448	if (expect_false (postfork))
		1449	loop_fork (EV_A);
		1450
851	/* update fd-related kernel structures */	1451	/* update fd-related kernel structures */
852	fd_reify (EV_A);	1452	fd_reify (EV_A);
853		1453
854	/* calculate blocking time */	1454	/* calculate blocking time */
		1455	{
		1456	ev_tstamp block;
855		1457
856	/* we only need this for !monotonic clockor timers, but as we basically	1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
857	always have timers, we just calculate it always */	1459	block = 0.; /* do not block at all */
858	#if EV_USE_MONOTONIC
859	if (expect_true (have_monotonic))
860	time_update_monotonic (EV_A);
861	else	1460	else
862	#endif
863	{	1461	{
864	rt_now = ev_time ();	1462	/* update time to cancel out callback processing overhead */
865	mn_now = rt_now;	1463	time_update (EV_A_ 1e100);
866	}
867		1464
868	if (flags & EVLOOP_NONBLOCK || idlecnt)
869	block = 0.;
870	else
871	{
872	block = MAX_BLOCKTIME;	1465	block = MAX_BLOCKTIME;
873		1466
874	if (timercnt)	1467	if (timercnt)
875	{	1468	{
876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
877	if (block > to) block = to;	1470	if (block > to) block = to;
878	}	1471	}
879		1472
		1473	#if EV_PERIODIC_ENABLE
880	if (periodiccnt)	1474	if (periodiccnt)
881	{	1475	{
882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
883	if (block > to) block = to;	1477	if (block > to) block = to;
884	}	1478	}
		1479	#endif
885		1480
886	if (block < 0.) block = 0.;	1481	if (expect_false (block < 0.)) block = 0.;
887	}	1482	}
888		1483
		1484	++loop_count;
889	method_poll (EV_A_ block);	1485	backend_poll (EV_A_ block);
890		1486
891	/* update rt_now, do magic */	1487	/* update ev_rt_now, do magic */
892	time_update (EV_A);	1488	time_update (EV_A_ block);
		1489	}
893		1490
894	/* queue pending timers and reschedule them */	1491	/* queue pending timers and reschedule them */
895	timers_reify (EV_A); /* relative timers called last */	1492	timers_reify (EV_A); /* relative timers called last */
		1493	#if EV_PERIODIC_ENABLE
896	periodics_reify (EV_A); /* absolute timers called first */	1494	periodics_reify (EV_A); /* absolute timers called first */
		1495	#endif
897		1496
		1497	#if EV_IDLE_ENABLE
898	/* queue idle watchers unless io or timers are pending */	1498	/* queue idle watchers unless other events are pending */
899	if (!pendingcnt)	1499	idle_reify (EV_A);
900	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1500	#endif
901		1501
902	/* queue check watchers, to be executed first */	1502	/* queue check watchers, to be executed first */
903	if (checkcnt)	1503	if (expect_false (checkcnt))
904	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
905		1505
906	call_pending (EV_A);	1506	call_pending (EV_A);
		1507
907	}	1508	}
908	while (activecnt && !loop_done);	1509	while (expect_true (activecnt && !loop_done));
909		1510
910	if (loop_done != 2)	1511	if (loop_done == EVUNLOOP_ONE)
911	loop_done = 0;	1512	loop_done = EVUNLOOP_CANCEL;
912	}	1513	}
913		1514
914	void	1515	void
915	ev_unloop (EV_P_ int how)	1516	ev_unloop (EV_P_ int how)
916	{	1517	{
917	loop_done = how;	1518	loop_done = how;
918	}	1519	}
919		1520
920	/*****************************************************************************/	1521	/*****************************************************************************/
921		1522
922	inline void	1523	void inline_size
923	wlist_add (WL *head, WL elem)	1524	wlist_add (WL *head, WL elem)
924	{	1525	{
925	elem->next = *head;	1526	elem->next = *head;
926	*head = elem;	1527	*head = elem;
927	}	1528	}
928		1529
929	inline void	1530	void inline_size
930	wlist_del (WL *head, WL elem)	1531	wlist_del (WL *head, WL elem)
931	{	1532	{
932	while (*head)	1533	while (*head)
933	{	1534	{
934	if (*head == elem)	1535	if (*head == elem)
…		…
939		1540
940	head = &(*head)->next;	1541	head = &(*head)->next;
941	}	1542	}
942	}	1543	}
943		1544
944	inline void	1545	void inline_speed
945	ev_clear_pending (EV_P_ W w)	1546	clear_pending (EV_P_ W w)
946	{	1547	{
947	if (w->pending)	1548	if (w->pending)
948	{	1549	{
949	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;
950	w->pending = 0;	1551	w->pending = 0;
951	}	1552	}
952	}	1553	}
953		1554
954	inline void	1555	int
		1556	ev_clear_pending (EV_P_ void *w)
		1557	{
		1558	W w_ = (W)w;
		1559	int pending = w_->pending;
		1560
		1561	if (expect_true (pending))
		1562	{
		1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1564	w_->pending = 0;
		1565	p->w = 0;
		1566	return p->events;
		1567	}
		1568	else
		1569	return 0;
		1570	}
		1571
		1572	void inline_size
		1573	pri_adjust (EV_P_ W w)
		1574	{
		1575	int pri = w->priority;
		1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1578	w->priority = pri;
		1579	}
		1580
		1581	void inline_speed
955	ev_start (EV_P_ W w, int active)	1582	ev_start (EV_P_ W w, int active)
956	{	1583	{
957	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1584	pri_adjust (EV_A_ w);
958	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
959
960	w->active = active;	1585	w->active = active;
961	ev_ref (EV_A);	1586	ev_ref (EV_A);
962	}	1587	}
963		1588
964	inline void	1589	void inline_size
965	ev_stop (EV_P_ W w)	1590	ev_stop (EV_P_ W w)
966	{	1591	{
967	ev_unref (EV_A);	1592	ev_unref (EV_A);
968	w->active = 0;	1593	w->active = 0;
969	}	1594	}
970		1595
971	/*****************************************************************************/	1596	/*****************************************************************************/
972		1597
973	void	1598	void noinline
974	ev_io_start (EV_P_ struct ev_io *w)	1599	ev_io_start (EV_P_ ev_io *w)
975	{	1600	{
976	int fd = w->fd;	1601	int fd = w->fd;
977		1602
978	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
979	return;	1604	return;
980		1605
981	assert (("ev_io_start called with negative fd", fd >= 0));	1606	assert (("ev_io_start called with negative fd", fd >= 0));
982		1607
983	ev_start (EV_A_ (W)w, 1);	1608	ev_start (EV_A_ (W)w, 1);
984	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
985	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1610	wlist_add (&anfds[fd].head, (WL)w);
986		1611
987	fd_change (EV_A_ fd);	1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1613	w->events &= ~EV_IOFDSET;
988	}	1614	}
989		1615
990	void	1616	void noinline
991	ev_io_stop (EV_P_ struct ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
992	{	1618	{
993	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
994	if (!ev_is_active (w))	1620	if (expect_false (!ev_is_active (w)))
995	return;	1621	return;
996		1622
		1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1624
997	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1625	wlist_del (&anfds[w->fd].head, (WL)w);
998	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
999		1627
1000	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd, 1);
1001	}	1629	}
1002		1630
1003	void	1631	void noinline
1004	ev_timer_start (EV_P_ struct ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
1005	{	1633	{
1006	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1007	return;	1635	return;
1008		1636
1009	w->at += mn_now;	1637	((WT)w)->at += mn_now;
1010		1638
1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012		1640
1013	ev_start (EV_A_ (W)w, ++timercnt);	1641	ev_start (EV_A_ (W)w, ++timercnt);
1014	array_needsize (timers, timermax, timercnt, );	1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1015	timers [timercnt - 1] = w;	1643	timers [timercnt - 1] = (WT)w;
1016	upheap ((WT *)timers, timercnt - 1);	1644	upheap (timers, timercnt - 1);
1017	}
1018		1645
1019	void	1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1647	}
		1648
		1649	void noinline
1020	ev_timer_stop (EV_P_ struct ev_timer *w)	1650	ev_timer_stop (EV_P_ ev_timer *w)
1021	{	1651	{
1022	ev_clear_pending (EV_A_ (W)w);	1652	clear_pending (EV_A_ (W)w);
1023	if (!ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1024	return;	1654	return;
1025		1655
1026	if (w->active < timercnt--)	1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1657
		1658	{
		1659	int active = ((W)w)->active;
		1660
		1661	if (expect_true (--active < --timercnt))
1027	{	1662	{
1028	timers [w->active - 1] = timers [timercnt];	1663	timers [active] = timers [timercnt];
1029	downheap ((WT *)timers, timercnt, w->active - 1);	1664	adjustheap (timers, timercnt, active);
1030	}	1665	}
		1666	}
1031		1667
1032	w->at = w->repeat;	1668	((WT)w)->at -= mn_now;
1033		1669
1034	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1035	}	1671	}
1036		1672
1037	void	1673	void noinline
1038	ev_timer_again (EV_P_ struct ev_timer *w)	1674	ev_timer_again (EV_P_ ev_timer *w)
1039	{	1675	{
1040	if (ev_is_active (w))	1676	if (ev_is_active (w))
1041	{	1677	{
1042	if (w->repeat)	1678	if (w->repeat)
1043	{	1679	{
1044	w->at = mn_now + w->repeat;	1680	((WT)w)->at = mn_now + w->repeat;
1045	downheap ((WT *)timers, timercnt, w->active - 1);	1681	adjustheap (timers, timercnt, ((W)w)->active - 1);
1046	}	1682	}
1047	else	1683	else
1048	ev_timer_stop (EV_A_ w);	1684	ev_timer_stop (EV_A_ w);
1049	}	1685	}
1050	else if (w->repeat)	1686	else if (w->repeat)
		1687	{
		1688	w->at = w->repeat;
1051	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
		1690	}
1052	}	1691	}
1053		1692
1054	void	1693	#if EV_PERIODIC_ENABLE
		1694	void noinline
1055	ev_periodic_start (EV_P_ struct ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1056	{	1696	{
1057	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1058	return;	1698	return;
1059		1699
		1700	if (w->reschedule_cb)
		1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1702	else if (w->interval)
		1703	{
1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1704	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 */	1705	/* 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;	1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1707	}
		1708	else
		1709	((WT)w)->at = w->offset;
1065		1710
1066	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1067	array_needsize (periodics, periodicmax, periodiccnt, );	1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1068	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = (WT)w;
1069	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap (periodics, periodiccnt - 1);
1070	}
1071		1715
1072	void	1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1717	}
		1718
		1719	void noinline
1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1074	{	1721	{
1075	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1076	if (!ev_is_active (w))	1723	if (expect_false (!ev_is_active (w)))
1077	return;	1724	return;
1078		1725
1079	if (w->active < periodiccnt--)	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730
		1731	if (expect_true (--active < --periodiccnt))
1080	{	1732	{
1081	periodics [w->active - 1] = periodics [periodiccnt];	1733	periodics [active] = periodics [periodiccnt];
1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1734	adjustheap (periodics, periodiccnt, active);
1083	}	1735	}
		1736	}
1084		1737
1085	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1086	}	1739	}
		1740
		1741	void noinline
		1742	ev_periodic_again (EV_P_ ev_periodic *w)
		1743	{
		1744	/* TODO: use adjustheap and recalculation */
		1745	ev_periodic_stop (EV_A_ w);
		1746	ev_periodic_start (EV_A_ w);
		1747	}
		1748	#endif
1087		1749
1088	#ifndef SA_RESTART	1750	#ifndef SA_RESTART
1089	# define SA_RESTART 0	1751	# define SA_RESTART 0
1090	#endif	1752	#endif
1091		1753
1092	void	1754	void noinline
1093	ev_signal_start (EV_P_ struct ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1094	{	1756	{
		1757	#if EV_MULTIPLICITY
		1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1759	#endif
1095	if (ev_is_active (w))	1760	if (expect_false (ev_is_active (w)))
1096	return;	1761	return;
1097		1762
1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099		1764
		1765	{
		1766	#ifndef _WIN32
		1767	sigset_t full, prev;
		1768	sigfillset (&full);
		1769	sigprocmask (SIG_SETMASK, &full, &prev);
		1770	#endif
		1771
		1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1773
		1774	#ifndef _WIN32
		1775	sigprocmask (SIG_SETMASK, &prev, 0);
		1776	#endif
		1777	}
		1778
1100	ev_start (EV_A_ (W)w, 1);	1779	ev_start (EV_A_ (W)w, 1);
1101	array_needsize (signals, signalmax, w->signum, signals_init);
1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1780	wlist_add (&signals [w->signum - 1].head, (WL)w);
1103		1781
1104	if (!w->next)	1782	if (!((WL)w)->next)
1105	{	1783	{
		1784	#if _WIN32
		1785	signal (w->signum, sighandler);
		1786	#else
1106	struct sigaction sa;	1787	struct sigaction sa;
1107	sa.sa_handler = sighandler;	1788	sa.sa_handler = sighandler;
1108	sigfillset (&sa.sa_mask);	1789	sigfillset (&sa.sa_mask);
1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1790	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110	sigaction (w->signum, &sa, 0);	1791	sigaction (w->signum, &sa, 0);
		1792	#endif
1111	}	1793	}
1112	}	1794	}
1113		1795
1114	void	1796	void noinline
1115	ev_signal_stop (EV_P_ struct ev_signal *w)	1797	ev_signal_stop (EV_P_ ev_signal *w)
1116	{	1798	{
1117	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1118	if (!ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1119	return;	1801	return;
1120		1802
1121	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1803	wlist_del (&signals [w->signum - 1].head, (WL)w);
1122	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1123		1805
1124	if (!signals [w->signum - 1].head)	1806	if (!signals [w->signum - 1].head)
1125	signal (w->signum, SIG_DFL);	1807	signal (w->signum, SIG_DFL);
1126	}	1808	}
1127		1809
1128	void	1810	void
1129	ev_idle_start (EV_P_ struct ev_idle *w)	1811	ev_child_start (EV_P_ ev_child *w)
1130	{	1812	{
		1813	#if EV_MULTIPLICITY
		1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1815	#endif
1131	if (ev_is_active (w))	1816	if (expect_false (ev_is_active (w)))
1132	return;	1817	return;
1133		1818
1134	ev_start (EV_A_ (W)w, ++idlecnt);	1819	ev_start (EV_A_ (W)w, 1);
1135	array_needsize (idles, idlemax, idlecnt, );	1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1136	idles [idlecnt - 1] = w;
1137	}	1821	}
1138		1822
1139	void	1823	void
1140	ev_idle_stop (EV_P_ struct ev_idle *w)	1824	ev_child_stop (EV_P_ ev_child *w)
1141	{	1825	{
1142	ev_clear_pending (EV_A_ (W)w);	1826	clear_pending (EV_A_ (W)w);
1143	if (ev_is_active (w))	1827	if (expect_false (!ev_is_active (w)))
1144	return;	1828	return;
1145		1829
1146	idles [w->active - 1] = idles [--idlecnt];	1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147	ev_stop (EV_A_ (W)w);	1831	ev_stop (EV_A_ (W)w);
1148	}	1832	}
1149		1833
		1834	#if EV_STAT_ENABLE
		1835
		1836	# ifdef _WIN32
		1837	# undef lstat
		1838	# define lstat(a,b) _stati64 (a,b)
		1839	# endif
		1840
		1841	#define DEF_STAT_INTERVAL 5.0074891
		1842	#define MIN_STAT_INTERVAL 0.1074891
		1843
		1844	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1845
		1846	#if EV_USE_INOTIFY
		1847	# define EV_INOTIFY_BUFSIZE 8192
		1848
		1849	static void noinline
		1850	infy_add (EV_P_ ev_stat *w)
		1851	{
		1852	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);
		1853
		1854	if (w->wd < 0)
		1855	{
		1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1857
		1858	/* monitor some parent directory for speedup hints */
		1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1860	{
		1861	char path [4096];
		1862	strcpy (path, w->path);
		1863
		1864	do
		1865	{
		1866	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1867	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1868
		1869	char *pend = strrchr (path, '/');
		1870
		1871	if (!pend)
		1872	break; /* whoops, no '/', complain to your admin */
		1873
		1874	*pend = 0;
		1875	w->wd = inotify_add_watch (fs_fd, path, mask);
		1876	}
		1877	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1878	}
		1879	}
		1880	else
		1881	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1882
		1883	if (w->wd >= 0)
		1884	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1885	}
		1886
		1887	static void noinline
		1888	infy_del (EV_P_ ev_stat *w)
		1889	{
		1890	int slot;
		1891	int wd = w->wd;
		1892
		1893	if (wd < 0)
		1894	return;
		1895
		1896	w->wd = -2;
		1897	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1898	wlist_del (&fs_hash [slot].head, (WL)w);
		1899
		1900	/* remove this watcher, if others are watching it, they will rearm */
		1901	inotify_rm_watch (fs_fd, wd);
		1902	}
		1903
		1904	static void noinline
		1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1906	{
		1907	if (slot < 0)
		1908	/* overflow, need to check for all hahs slots */
		1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1910	infy_wd (EV_A_ slot, wd, ev);
		1911	else
		1912	{
		1913	WL w_;
		1914
		1915	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1916	{
		1917	ev_stat *w = (ev_stat *)w_;
		1918	w_ = w_->next; /* lets us remove this watcher and all before it */
		1919
		1920	if (w->wd == wd || wd == -1)
		1921	{
		1922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1923	{
		1924	w->wd = -1;
		1925	infy_add (EV_A_ w); /* re-add, no matter what */
		1926	}
		1927
		1928	stat_timer_cb (EV_A_ &w->timer, 0);
		1929	}
		1930	}
		1931	}
		1932	}
		1933
		1934	static void
		1935	infy_cb (EV_P_ ev_io *w, int revents)
		1936	{
		1937	char buf [EV_INOTIFY_BUFSIZE];
		1938	struct inotify_event *ev = (struct inotify_event *)buf;
		1939	int ofs;
		1940	int len = read (fs_fd, buf, sizeof (buf));
		1941
		1942	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1943	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1944	}
		1945
		1946	void inline_size
		1947	infy_init (EV_P)
		1948	{
		1949	if (fs_fd != -2)
		1950	return;
		1951
		1952	fs_fd = inotify_init ();
		1953
		1954	if (fs_fd >= 0)
		1955	{
		1956	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1957	ev_set_priority (&fs_w, EV_MAXPRI);
		1958	ev_io_start (EV_A_ &fs_w);
		1959	}
		1960	}
		1961
		1962	void inline_size
		1963	infy_fork (EV_P)
		1964	{
		1965	int slot;
		1966
		1967	if (fs_fd < 0)
		1968	return;
		1969
		1970	close (fs_fd);
		1971	fs_fd = inotify_init ();
		1972
		1973	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1974	{
		1975	WL w_ = fs_hash [slot].head;
		1976	fs_hash [slot].head = 0;
		1977
		1978	while (w_)
		1979	{
		1980	ev_stat *w = (ev_stat *)w_;
		1981	w_ = w_->next; /* lets us add this watcher */
		1982
		1983	w->wd = -1;
		1984
		1985	if (fs_fd >= 0)
		1986	infy_add (EV_A_ w); /* re-add, no matter what */
		1987	else
		1988	ev_timer_start (EV_A_ &w->timer);
		1989	}
		1990
		1991	}
		1992	}
		1993
		1994	#endif
		1995
1150	void	1996	void
		1997	ev_stat_stat (EV_P_ ev_stat *w)
		1998	{
		1999	if (lstat (w->path, &w->attr) < 0)
		2000	w->attr.st_nlink = 0;
		2001	else if (!w->attr.st_nlink)
		2002	w->attr.st_nlink = 1;
		2003	}
		2004
		2005	static void noinline
		2006	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2007	{
		2008	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2009
		2010	/* we copy this here each the time so that */
		2011	/* prev has the old value when the callback gets invoked */
		2012	w->prev = w->attr;
		2013	ev_stat_stat (EV_A_ w);
		2014
		2015	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2016	if (
		2017	w->prev.st_dev != w->attr.st_dev
		2018	|| w->prev.st_ino != w->attr.st_ino
		2019	|| w->prev.st_mode != w->attr.st_mode
		2020	|| w->prev.st_nlink != w->attr.st_nlink
		2021	|| w->prev.st_uid != w->attr.st_uid
		2022	|| w->prev.st_gid != w->attr.st_gid
		2023	|| w->prev.st_rdev != w->attr.st_rdev
		2024	|| w->prev.st_size != w->attr.st_size
		2025	|| w->prev.st_atime != w->attr.st_atime
		2026	|| w->prev.st_mtime != w->attr.st_mtime
		2027	|| w->prev.st_ctime != w->attr.st_ctime
		2028	) {
		2029	#if EV_USE_INOTIFY
		2030	infy_del (EV_A_ w);
		2031	infy_add (EV_A_ w);
		2032	ev_stat_stat (EV_A_ w); /* avoid race... */
		2033	#endif
		2034
		2035	ev_feed_event (EV_A_ w, EV_STAT);
		2036	}
		2037	}
		2038
		2039	void
		2040	ev_stat_start (EV_P_ ev_stat *w)
		2041	{
		2042	if (expect_false (ev_is_active (w)))
		2043	return;
		2044
		2045	/* since we use memcmp, we need to clear any padding data etc. */
		2046	memset (&w->prev, 0, sizeof (ev_statdata));
		2047	memset (&w->attr, 0, sizeof (ev_statdata));
		2048
		2049	ev_stat_stat (EV_A_ w);
		2050
		2051	if (w->interval < MIN_STAT_INTERVAL)
		2052	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2053
		2054	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2055	ev_set_priority (&w->timer, ev_priority (w));
		2056
		2057	#if EV_USE_INOTIFY
		2058	infy_init (EV_A);
		2059
		2060	if (fs_fd >= 0)
		2061	infy_add (EV_A_ w);
		2062	else
		2063	#endif
		2064	ev_timer_start (EV_A_ &w->timer);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_stat_stop (EV_P_ ev_stat *w)
		2071	{
		2072	clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	#if EV_USE_INOTIFY
		2077	infy_del (EV_A_ w);
		2078	#endif
		2079	ev_timer_stop (EV_A_ &w->timer);
		2080
		2081	ev_stop (EV_A_ (W)w);
		2082	}
		2083	#endif
		2084
		2085	#if EV_IDLE_ENABLE
		2086	void
		2087	ev_idle_start (EV_P_ ev_idle *w)
		2088	{
		2089	if (expect_false (ev_is_active (w)))
		2090	return;
		2091
		2092	pri_adjust (EV_A_ (W)w);
		2093
		2094	{
		2095	int active = ++idlecnt [ABSPRI (w)];
		2096
		2097	++idleall;
		2098	ev_start (EV_A_ (W)w, active);
		2099
		2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2101	idles [ABSPRI (w)][active - 1] = w;
		2102	}
		2103	}
		2104
		2105	void
		2106	ev_idle_stop (EV_P_ ev_idle *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114
		2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2116	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	--idleall;
		2120	}
		2121	}
		2122	#endif
		2123
		2124	void
1151	ev_prepare_start (EV_P_ struct ev_prepare *w)	2125	ev_prepare_start (EV_P_ ev_prepare *w)
1152	{	2126	{
1153	if (ev_is_active (w))	2127	if (expect_false (ev_is_active (w)))
1154	return;	2128	return;
1155		2129
1156	ev_start (EV_A_ (W)w, ++preparecnt);	2130	ev_start (EV_A_ (W)w, ++preparecnt);
1157	array_needsize (prepares, preparemax, preparecnt, );	2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1158	prepares [preparecnt - 1] = w;	2132	prepares [preparecnt - 1] = w;
1159	}	2133	}
1160		2134
1161	void	2135	void
1162	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2136	ev_prepare_stop (EV_P_ ev_prepare *w)
1163	{	2137	{
1164	ev_clear_pending (EV_A_ (W)w);	2138	clear_pending (EV_A_ (W)w);
1165	if (ev_is_active (w))	2139	if (expect_false (!ev_is_active (w)))
1166	return;	2140	return;
1167		2141
		2142	{
		2143	int active = ((W)w)->active;
1168	prepares [w->active - 1] = prepares [--preparecnt];	2144	prepares [active - 1] = prepares [--preparecnt];
		2145	((W)prepares [active - 1])->active = active;
		2146	}
		2147
1169	ev_stop (EV_A_ (W)w);	2148	ev_stop (EV_A_ (W)w);
1170	}	2149	}
1171		2150
1172	void	2151	void
1173	ev_check_start (EV_P_ struct ev_check *w)	2152	ev_check_start (EV_P_ ev_check *w)
1174	{	2153	{
1175	if (ev_is_active (w))	2154	if (expect_false (ev_is_active (w)))
1176	return;	2155	return;
1177		2156
1178	ev_start (EV_A_ (W)w, ++checkcnt);	2157	ev_start (EV_A_ (W)w, ++checkcnt);
1179	array_needsize (checks, checkmax, checkcnt, );	2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1180	checks [checkcnt - 1] = w;	2159	checks [checkcnt - 1] = w;
1181	}	2160	}
1182		2161
1183	void	2162	void
1184	ev_check_stop (EV_P_ struct ev_check *w)	2163	ev_check_stop (EV_P_ ev_check *w)
1185	{	2164	{
1186	ev_clear_pending (EV_A_ (W)w);	2165	clear_pending (EV_A_ (W)w);
1187	if (ev_is_active (w))	2166	if (expect_false (!ev_is_active (w)))
1188	return;	2167	return;
1189		2168
		2169	{
		2170	int active = ((W)w)->active;
1190	checks [w->active - 1] = checks [--checkcnt];	2171	checks [active - 1] = checks [--checkcnt];
		2172	((W)checks [active - 1])->active = active;
		2173	}
		2174
1191	ev_stop (EV_A_ (W)w);	2175	ev_stop (EV_A_ (W)w);
1192	}	2176	}
1193		2177
1194	void	2178	#if EV_EMBED_ENABLE
1195	ev_child_start (EV_P_ struct ev_child *w)	2179	void noinline
		2180	ev_embed_sweep (EV_P_ ev_embed *w)
1196	{	2181	{
		2182	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2183	}
		2184
		2185	static void
		2186	embed_cb (EV_P_ ev_io *io, int revents)
		2187	{
		2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2189
1197	if (ev_is_active (w))	2190	if (ev_cb (w))
		2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2192	else
		2193	ev_embed_sweep (loop, w);
		2194	}
		2195
		2196	void
		2197	ev_embed_start (EV_P_ ev_embed *w)
		2198	{
		2199	if (expect_false (ev_is_active (w)))
1198	return;	2200	return;
		2201
		2202	{
		2203	struct ev_loop *loop = w->loop;
		2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2206	}
		2207
		2208	ev_set_priority (&w->io, ev_priority (w));
		2209	ev_io_start (EV_A_ &w->io);
1199		2210
1200	ev_start (EV_A_ (W)w, 1);	2211	ev_start (EV_A_ (W)w, 1);
1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1202	}	2212	}
1203		2213
1204	void	2214	void
1205	ev_child_stop (EV_P_ struct ev_child *w)	2215	ev_embed_stop (EV_P_ ev_embed *w)
1206	{	2216	{
1207	ev_clear_pending (EV_A_ (W)w);	2217	clear_pending (EV_A_ (W)w);
1208	if (ev_is_active (w))	2218	if (expect_false (!ev_is_active (w)))
1209	return;	2219	return;
1210		2220
1211	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2221	ev_io_stop (EV_A_ &w->io);
		2222
1212	ev_stop (EV_A_ (W)w);	2223	ev_stop (EV_A_ (W)w);
1213	}	2224	}
		2225	#endif
		2226
		2227	#if EV_FORK_ENABLE
		2228	void
		2229	ev_fork_start (EV_P_ ev_fork *w)
		2230	{
		2231	if (expect_false (ev_is_active (w)))
		2232	return;
		2233
		2234	ev_start (EV_A_ (W)w, ++forkcnt);
		2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2236	forks [forkcnt - 1] = w;
		2237	}
		2238
		2239	void
		2240	ev_fork_stop (EV_P_ ev_fork *w)
		2241	{
		2242	clear_pending (EV_A_ (W)w);
		2243	if (expect_false (!ev_is_active (w)))
		2244	return;
		2245
		2246	{
		2247	int active = ((W)w)->active;
		2248	forks [active - 1] = forks [--forkcnt];
		2249	((W)forks [active - 1])->active = active;
		2250	}
		2251
		2252	ev_stop (EV_A_ (W)w);
		2253	}
		2254	#endif
1214		2255
1215	/*****************************************************************************/	2256	/*****************************************************************************/
1216		2257
1217	struct ev_once	2258	struct ev_once
1218	{	2259	{
1219	struct ev_io io;	2260	ev_io io;
1220	struct ev_timer to;	2261	ev_timer to;
1221	void (*cb)(int revents, void *arg);	2262	void (*cb)(int revents, void *arg);
1222	void *arg;	2263	void *arg;
1223	};	2264	};
1224		2265
1225	static void	2266	static void
…		…
1228	void (*cb)(int revents, void *arg) = once->cb;	2269	void (*cb)(int revents, void *arg) = once->cb;
1229	void *arg = once->arg;	2270	void *arg = once->arg;
1230		2271
1231	ev_io_stop (EV_A_ &once->io);	2272	ev_io_stop (EV_A_ &once->io);
1232	ev_timer_stop (EV_A_ &once->to);	2273	ev_timer_stop (EV_A_ &once->to);
1233	free (once);	2274	ev_free (once);
1234		2275
1235	cb (revents, arg);	2276	cb (revents, arg);
1236	}	2277	}
1237		2278
1238	static void	2279	static void
1239	once_cb_io (EV_P_ struct ev_io *w, int revents)	2280	once_cb_io (EV_P_ ev_io *w, int revents)
1240	{	2281	{
1241	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1242	}	2283	}
1243		2284
1244	static void	2285	static void
1245	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2286	once_cb_to (EV_P_ ev_timer *w, int revents)
1246	{	2287	{
1247	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1248	}	2289	}
1249		2290
1250	void	2291	void
1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2292	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1252	{	2293	{
1253	struct ev_once *once = malloc (sizeof (struct ev_once));	2294	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1254		2295
1255	if (!once)	2296	if (expect_false (!once))
		2297	{
1256	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2298	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1257	else	2299	return;
1258	{	2300	}
		2301
1259	once->cb = cb;	2302	once->cb = cb;
1260	once->arg = arg;	2303	once->arg = arg;
1261		2304
1262	ev_watcher_init (&once->io, once_cb_io);	2305	ev_init (&once->io, once_cb_io);
1263	if (fd >= 0)	2306	if (fd >= 0)
1264	{	2307	{
1265	ev_io_set (&once->io, fd, events);	2308	ev_io_set (&once->io, fd, events);
1266	ev_io_start (EV_A_ &once->io);	2309	ev_io_start (EV_A_ &once->io);
1267	}	2310	}
1268		2311
1269	ev_watcher_init (&once->to, once_cb_to);	2312	ev_init (&once->to, once_cb_to);
1270	if (timeout >= 0.)	2313	if (timeout >= 0.)
1271	{	2314	{
1272	ev_timer_set (&once->to, timeout, 0.);	2315	ev_timer_set (&once->to, timeout, 0.);
1273	ev_timer_start (EV_A_ &once->to);	2316	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	{	2317	}
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	}	2318	}
1355		2319
		2320	#ifdef __cplusplus
		2321	}
1356	#endif	2322	#endif
1357		2323
1358
1359
1360

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