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Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.176 by root, Tue Dec 11 04:31:55 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	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
91	/**/	219	/**/
92		220
		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	* and intervals up to 20 years.
		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
98	#ifndef EV_EMBED
99	# include "ev.h"
100	#endif
101		235
102	#if __GNUC__ >= 3	236	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
104	# define inline inline	238	# define noinline __attribute__ ((noinline))
105	#else	239	#else
106	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
107	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
108	#endif	245	#endif
109		246
110	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
111	#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
112		256
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
115		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
116	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
119		266
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		268
		269	#ifdef _WIN32
		270	# include "ev_win32.c"
		271	#endif
		272
122	/*****************************************************************************/	273	/*****************************************************************************/
123		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
124	typedef struct	325	typedef struct
125	{	326	{
126	struct ev_watcher_list *head;	327	WL head;
127	unsigned char events;	328	unsigned char events;
128	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
129	} ANFD;	333	} ANFD;
130		334
131	typedef struct	335	typedef struct
132	{	336	{
133	W w;	337	W w;
134	int events;	338	int events;
135	} ANPENDING;	339	} ANPENDING;
136		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
137	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
138		349
139	struct ev_loop	350	struct ev_loop
140	{	351	{
		352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	355	#include "ev_vars.h"
143	};
144	# undef VAR	356	#undef VAR
		357	};
145	# 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;
146		362
147	#else	363	#else
148		364
		365	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	367	#include "ev_vars.h"
151	# undef VAR	368	#undef VAR
		369
		370	static int ev_default_loop_ptr;
152		371
153	#endif	372	#endif
154		373
155	/*****************************************************************************/	374	/*****************************************************************************/
156		375
157	inline ev_tstamp	376	ev_tstamp
158	ev_time (void)	377	ev_time (void)
159	{	378	{
160	#if EV_USE_REALTIME	379	#if EV_USE_REALTIME
161	struct timespec ts;	380	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	381	clock_gettime (CLOCK_REALTIME, &ts);
…		…
166	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
167	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
168	#endif	387	#endif
169	}	388	}
170		389
171	inline ev_tstamp	390	ev_tstamp inline_size
172	get_clock (void)	391	get_clock (void)
173	{	392	{
174	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
175	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
176	{	395	{
…		…
181	#endif	400	#endif
182		401
183	return ev_time ();	402	return ev_time ();
184	}	403	}
185		404
		405	#if EV_MULTIPLICITY
186	ev_tstamp	406	ev_tstamp
187	ev_now (EV_P)	407	ev_now (EV_P)
188	{	408	{
189	return rt_now;	409	return ev_rt_now;
190	}	410	}
		411	#endif
191		412
192	#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;
193		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
194	#define array_needsize(base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
196	{ \	443	{ \
197	int newcnt = cur; \	444	int ocur_ = (cur); \
198	do \	445	(base) = (type *)array_realloc \
199	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
200	newcnt = array_roundsize (base, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
201	} \	448	}
202	while ((cnt) > newcnt); \	449
		450	#if 0
		451	#define array_slim(type,stem) \
		452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
203	\	453	{ \
204	base = realloc (base, sizeof (*base) * (newcnt)); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
205	init (base + cur, newcnt - cur); \	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
206	cur = newcnt; \	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
207	}	457	}
		458	#endif
		459
		460	#define array_free(stem, idx) \
		461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
208		462
209	/*****************************************************************************/	463	/*****************************************************************************/
210		464
211	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_size
		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
212	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
213	{	495	{
214	while (count--)	496	while (count--)
215	{	497	{
216	base->head = 0;	498	base->head = 0;
…		…
219		501
220	++base;	502	++base;
221	}	503	}
222	}	504	}
223		505
224	static void	506	void inline_speed
225	event (EV_P_ W w, int events)
226	{
227	if (w->pending)
228	{
229	pendings [ABSPRI (w)][w->pending - 1].events |= events;
230	return;
231	}
232
233	w->pending = ++pendingcnt [ABSPRI (w)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
235	pendings [ABSPRI (w)][w->pending - 1].w = w;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;
237	}
238
239	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{
242	int i;
243
244	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);
246	}
247
248	static void
249	fd_event (EV_P_ int fd, int events)	507	fd_event (EV_P_ int fd, int revents)
250	{	508	{
251	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	510	ev_io *w;
253		511
254	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)
255	{	513	{
256	int ev = w->events & events;	514	int ev = w->events & revents;
257		515
258	if (ev)	516	if (ev)
259	event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
260	}	518	}
261	}	519	}
262		520
263	/*****************************************************************************/	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	}
264		527
265	static void	528	void inline_size
266	fd_reify (EV_P)	529	fd_reify (EV_P)
267	{	530	{
268	int i;	531	int i;
269		532
270	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
271	{	534	{
272	int fd = fdchanges [i];	535	int fd = fdchanges [i];
273	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
274	struct ev_io *w;	537	ev_io *w;
275		538
276	int events = 0;	539	int events = 0;
277		540
278	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)
279	events |= w->events;	542	events |= w->events;
280		543
		544	#if EV_SELECT_IS_WINSOCKET
		545	if (events)
		546	{
		547	unsigned long argp;
		548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		550	}
		551	#endif
		552
281	anfd->reify = 0;	553	anfd->reify = 0;
282		554
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	555	backend_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	556	anfd->events = events;
287	}
288	}	557	}
289		558
290	fdchangecnt = 0;	559	fdchangecnt = 0;
291	}	560	}
292		561
293	static void	562	void inline_size
294	fd_change (EV_P_ int fd)	563	fd_change (EV_P_ int fd)
295	{	564	{
296	if (anfds [fd].reify || fdchangecnt < 0)	565	if (expect_false (anfds [fd].reify))
297	return;	566	return;
298		567
299	anfds [fd].reify = 1;	568	anfds [fd].reify = 1;
300		569
301	++fdchangecnt;	570	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	571	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	572	fdchanges [fdchangecnt - 1] = fd;
304	}	573	}
305		574
306	static void	575	void inline_speed
307	fd_kill (EV_P_ int fd)	576	fd_kill (EV_P_ int fd)
308	{	577	{
309	struct ev_io *w;	578	ev_io *w;
310		579
311	while ((w = (struct ev_io *)anfds [fd].head))	580	while ((w = (ev_io *)anfds [fd].head))
312	{	581	{
313	ev_io_stop (EV_A_ w);	582	ev_io_stop (EV_A_ w);
314	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	583	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
315	}	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
316	}	595	}
317		596
318	/* called on EBADF to verify fds */	597	/* called on EBADF to verify fds */
319	static void	598	static void noinline
320	fd_ebadf (EV_P)	599	fd_ebadf (EV_P)
321	{	600	{
322	int fd;	601	int fd;
323		602
324	for (fd = 0; fd < anfdmax; ++fd)	603	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	604	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	605	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	606	fd_kill (EV_A_ fd);
328	}	607	}
329		608
330	/* 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 */
331	static void	610	static void noinline
332	fd_enomem (EV_P)	611	fd_enomem (EV_P)
333	{	612	{
334	int fd = anfdmax;	613	int fd;
335		614
336	while (fd--)	615	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	616	if (anfds [fd].events)
338	{	617	{
339	close (fd);
340	fd_kill (EV_A_ fd);	618	fd_kill (EV_A_ fd);
341	return;	619	return;
342	}	620	}
343	}	621	}
344		622
345	/* susually called after fork if method needs to re-arm all fds from scratch */	623	/* usually called after fork if backend needs to re-arm all fds from scratch */
346	static void	624	static void noinline
347	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
348	{	626	{
349	int fd;	627	int fd;
350		628
351	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	630	if (anfds [fd].events)
354	{	631	{
355	anfds [fd].events = 0;	632	anfds [fd].events = 0;
356	fd_change (fd);	633	fd_change (EV_A_ fd);
357	}	634	}
358	}	635	}
359		636
360	/*****************************************************************************/	637	/*****************************************************************************/
361		638
362	static void	639	void inline_speed
363	upheap (WT *heap, int k)	640	upheap (WT *heap, int k)
364	{	641	{
365	WT w = heap [k];	642	WT w = heap [k];
366		643
367	while (k && heap [k >> 1]->at > w->at)	644	while (k && heap [k >> 1]->at > w->at)
368	{	645	{
369	heap [k] = heap [k >> 1];	646	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	647	((W)heap [k])->active = k + 1;
371	k >>= 1;	648	k >>= 1;
372	}	649	}
373		650
374	heap [k] = w;	651	heap [k] = w;
375	heap [k]->active = k + 1;	652	((W)heap [k])->active = k + 1;
376		653
377	}	654	}
378		655
379	static void	656	void inline_speed
380	downheap (WT *heap, int N, int k)	657	downheap (WT *heap, int N, int k)
381	{	658	{
382	WT w = heap [k];	659	WT w = heap [k];
383		660
384	while (k < (N >> 1))	661	while (k < (N >> 1))
…		…
390		667
391	if (w->at <= heap [j]->at)	668	if (w->at <= heap [j]->at)
392	break;	669	break;
393		670
394	heap [k] = heap [j];	671	heap [k] = heap [j];
395	heap [k]->active = k + 1;	672	((W)heap [k])->active = k + 1;
396	k = j;	673	k = j;
397	}	674	}
398		675
399	heap [k] = w;	676	heap [k] = w;
400	heap [k]->active = k + 1;	677	((W)heap [k])->active = k + 1;
		678	}
		679
		680	void inline_size
		681	adjustheap (WT *heap, int N, int k)
		682	{
		683	upheap (heap, k);
		684	downheap (heap, N, k);
401	}	685	}
402		686
403	/*****************************************************************************/	687	/*****************************************************************************/
404		688
405	typedef struct	689	typedef struct
406	{	690	{
407	struct ev_watcher_list *head;	691	WL head;
408	sig_atomic_t volatile gotsig;	692	sig_atomic_t volatile gotsig;
409	} ANSIG;	693	} ANSIG;
410		694
411	static ANSIG *signals;	695	static ANSIG *signals;
412	static int signalmax;	696	static int signalmax;
413		697
414	static int sigpipe [2];	698	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	699	static sig_atomic_t volatile gotsig;
		700	static ev_io sigev;
416		701
417	static void	702	void inline_size
418	signals_init (ANSIG *base, int count)	703	signals_init (ANSIG *base, int count)
419	{	704	{
420	while (count--)	705	while (count--)
421	{	706	{
422	base->head = 0;	707	base->head = 0;
…		…
427	}	712	}
428		713
429	static void	714	static void
430	sighandler (int signum)	715	sighandler (int signum)
431	{	716	{
		717	#if _WIN32
		718	signal (signum, sighandler);
		719	#endif
		720
432	signals [signum - 1].gotsig = 1;	721	signals [signum - 1].gotsig = 1;
433		722
434	if (!gotsig)	723	if (!gotsig)
435	{	724	{
436	int old_errno = errno;	725	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	727	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	728	errno = old_errno;
440	}	729	}
441	}	730	}
442		731
		732	void noinline
		733	ev_feed_signal_event (EV_P_ int signum)
		734	{
		735	WL w;
		736
		737	#if EV_MULTIPLICITY
		738	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		739	#endif
		740
		741	--signum;
		742
		743	if (signum < 0 || signum >= signalmax)
		744	return;
		745
		746	signals [signum].gotsig = 0;
		747
		748	for (w = signals [signum].head; w; w = w->next)
		749	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		750	}
		751
443	static void	752	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	753	sigcb (EV_P_ ev_io *iow, int revents)
445	{	754	{
446	struct ev_watcher_list *w;
447	int signum;	755	int signum;
448		756
449	read (sigpipe [0], &revents, 1);	757	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	758	gotsig = 0;
451		759
452	for (signum = signalmax; signum--; )	760	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	761	if (signals [signum].gotsig)
454	{	762	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;
456
457	for (w = signals [signum].head; w; w = w->next)
458	event (EV_A_ (W)w, EV_SIGNAL);
459	}
460	}	763	}
461		764
462	static void	765	void inline_speed
		766	fd_intern (int fd)
		767	{
		768	#ifdef _WIN32
		769	int arg = 1;
		770	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		771	#else
		772	fcntl (fd, F_SETFD, FD_CLOEXEC);
		773	fcntl (fd, F_SETFL, O_NONBLOCK);
		774	#endif
		775	}
		776
		777	static void noinline
463	siginit (EV_P)	778	siginit (EV_P)
464	{	779	{
465	#ifndef WIN32	780	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	781	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		782
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	783	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	784	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	785	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	786	}
478		787
479	/*****************************************************************************/	788	/*****************************************************************************/
480		789
		790	static ev_child *childs [EV_PID_HASHSIZE];
		791
481	#ifndef WIN32	792	#ifndef _WIN32
		793
		794	static ev_signal childev;
		795
		796	void inline_speed
		797	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		798	{
		799	ev_child *w;
		800
		801	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		802	if (w->pid == pid || !w->pid)
		803	{
		804	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		805	w->rpid = pid;
		806	w->rstatus = status;
		807	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		808	}
		809	}
482		810
483	#ifndef WCONTINUED	811	#ifndef WCONTINUED
484	# define WCONTINUED 0	812	# define WCONTINUED 0
485	#endif	813	#endif
486		814
487	static void	815	static void
488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
489	{
490	struct ev_child *w;
491
492	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
493	if (w->pid == pid || !w->pid)
494	{
495	w->priority = sw->priority; /* need to do it *now* */
496	w->rpid = pid;
497	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);
499	}
500	}
501
502	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	816	childcb (EV_P_ ev_signal *sw, int revents)
504	{	817	{
505	int pid, status;	818	int pid, status;
506		819
		820	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
507	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	821	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
508	{	822	if (!WCONTINUED
		823	|| errno != EINVAL
		824	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		825	return;
		826
509	/* make sure we are called again until all childs have been reaped */	827	/* make sure we are called again until all childs have been reaped */
		828	/* we need to do it this way so that the callback gets called before we continue */
510	event (EV_A_ (W)sw, EV_SIGNAL);	829	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		830
512	child_reap (EV_A_ sw, pid, pid, status);	831	child_reap (EV_A_ sw, pid, pid, status);
		832	if (EV_PID_HASHSIZE > 1)
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	833	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
514	}
515	}	834	}
516		835
517	#endif	836	#endif
518		837
519	/*****************************************************************************/	838	/*****************************************************************************/
520		839
		840	#if EV_USE_PORT
		841	# include "ev_port.c"
		842	#endif
521	#if EV_USE_KQUEUE	843	#if EV_USE_KQUEUE
522	# include "ev_kqueue.c"	844	# include "ev_kqueue.c"
523	#endif	845	#endif
524	#if EV_USE_EPOLL	846	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	847	# include "ev_epoll.c"
526	#endif	848	#endif
527	#if EV_USEV_POLL	849	#if EV_USE_POLL
528	# include "ev_poll.c"	850	# include "ev_poll.c"
529	#endif	851	#endif
530	#if EV_USE_SELECT	852	#if EV_USE_SELECT
531	# include "ev_select.c"	853	# include "ev_select.c"
532	#endif	854	#endif
…		…
542	{	864	{
543	return EV_VERSION_MINOR;	865	return EV_VERSION_MINOR;
544	}	866	}
545		867
546	/* return true if we are running with elevated privileges and should ignore env variables */	868	/* return true if we are running with elevated privileges and should ignore env variables */
547	static int	869	int inline_size
548	enable_secure (void)	870	enable_secure (void)
549	{	871	{
550	#ifdef WIN32	872	#ifdef _WIN32
551	return 0;	873	return 0;
552	#else	874	#else
553	return getuid () != geteuid ()	875	return getuid () != geteuid ()
554	|| getgid () != getegid ();	876	|| getgid () != getegid ();
555	#endif	877	#endif
556	}	878	}
557		879
558	int	880	unsigned int
559	ev_method (EV_P)	881	ev_supported_backends (void)
560	{	882	{
561	return method;	883	unsigned int flags = 0;
562	}
563		884
564	static void	885	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
565	loop_init (EV_P_ int methods)	886	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		887	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		888	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		889	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		890
		891	return flags;
		892	}
		893
		894	unsigned int
		895	ev_recommended_backends (void)
566	{	896	{
567	if (!method)	897	unsigned int flags = ev_supported_backends ();
		898
		899	#ifndef __NetBSD__
		900	/* kqueue is borked on everything but netbsd apparently */
		901	/* it usually doesn't work correctly on anything but sockets and pipes */
		902	flags &= ~EVBACKEND_KQUEUE;
		903	#endif
		904	#ifdef __APPLE__
		905	// flags &= ~EVBACKEND_KQUEUE; for documentation
		906	flags &= ~EVBACKEND_POLL;
		907	#endif
		908
		909	return flags;
		910	}
		911
		912	unsigned int
		913	ev_embeddable_backends (void)
		914	{
		915	return EVBACKEND_EPOLL
		916	| EVBACKEND_KQUEUE
		917	| EVBACKEND_PORT;
		918	}
		919
		920	unsigned int
		921	ev_backend (EV_P)
		922	{
		923	return backend;
		924	}
		925
		926	unsigned int
		927	ev_loop_count (EV_P)
		928	{
		929	return loop_count;
		930	}
		931
		932	static void noinline
		933	loop_init (EV_P_ unsigned int flags)
		934	{
		935	if (!backend)
568	{	936	{
569	#if EV_USE_MONOTONIC	937	#if EV_USE_MONOTONIC
570	{	938	{
571	struct timespec ts;	939	struct timespec ts;
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	940	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	941	have_monotonic = 1;
574	}	942	}
575	#endif	943	#endif
576		944
577	rt_now = ev_time ();	945	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	946	mn_now = get_clock ();
579	now_floor = mn_now;	947	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	948	rtmn_diff = ev_rt_now - mn_now;
581		949
582	if (methods == EVMETHOD_AUTO)	950	/* pid check not overridable via env */
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	951	#ifndef _WIN32
		952	if (flags & EVFLAG_FORKCHECK)
		953	curpid = getpid ();
		954	#endif
		955
		956	if (!(flags & EVFLAG_NOENV)
		957	&& !enable_secure ()
		958	&& getenv ("LIBEV_FLAGS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	959	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else
586	methods = EVMETHOD_ANY;
587		960
588	method = 0;	961	if (!(flags & 0x0000ffffUL))
		962	flags |= ev_recommended_backends ();
		963
		964	backend = 0;
		965	backend_fd = -1;
		966	#if EV_USE_INOTIFY
		967	fs_fd = -2;
		968	#endif
		969
		970	#if EV_USE_PORT
		971	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		972	#endif
589	#if EV_USE_KQUEUE	973	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	974	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591	#endif	975	#endif
592	#if EV_USE_EPOLL	976	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	977	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594	#endif	978	#endif
595	#if EV_USEV_POLL	979	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	980	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597	#endif	981	#endif
598	#if EV_USE_SELECT	982	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	983	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600	#endif	984	#endif
601	}
602	}
603		985
604	void	986	ev_init (&sigev, sigcb);
		987	ev_set_priority (&sigev, EV_MAXPRI);
		988	}
		989	}
		990
		991	static void noinline
605	loop_destroy (EV_P)	992	loop_destroy (EV_P)
606	{	993	{
		994	int i;
		995
		996	#if EV_USE_INOTIFY
		997	if (fs_fd >= 0)
		998	close (fs_fd);
		999	#endif
		1000
		1001	if (backend_fd >= 0)
		1002	close (backend_fd);
		1003
		1004	#if EV_USE_PORT
		1005	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1006	#endif
607	#if EV_USE_KQUEUE	1007	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1008	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609	#endif	1009	#endif
610	#if EV_USE_EPOLL	1010	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1011	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612	#endif	1012	#endif
613	#if EV_USEV_POLL	1013	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1014	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615	#endif	1015	#endif
616	#if EV_USE_SELECT	1016	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1017	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618	#endif	1018	#endif
619		1019
620	method = 0;	1020	for (i = NUMPRI; i--; )
621	/*TODO*/	1021	{
622	}	1022	array_free (pending, [i]);
		1023	#if EV_IDLE_ENABLE
		1024	array_free (idle, [i]);
		1025	#endif
		1026	}
623		1027
624	void	1028	/* have to use the microsoft-never-gets-it-right macro */
		1029	array_free (fdchange, EMPTY);
		1030	array_free (timer, EMPTY);
		1031	#if EV_PERIODIC_ENABLE
		1032	array_free (periodic, EMPTY);
		1033	#endif
		1034	array_free (prepare, EMPTY);
		1035	array_free (check, EMPTY);
		1036
		1037	backend = 0;
		1038	}
		1039
		1040	void inline_size infy_fork (EV_P);
		1041
		1042	void inline_size
625	loop_fork (EV_P)	1043	loop_fork (EV_P)
626	{	1044	{
627	/*TODO*/	1045	#if EV_USE_PORT
		1046	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1047	#endif
		1048	#if EV_USE_KQUEUE
		1049	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1050	#endif
628	#if EV_USE_EPOLL	1051	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1052	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630	#endif	1053	#endif
631	#if EV_USE_KQUEUE	1054	#if EV_USE_INOTIFY
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1055	infy_fork (EV_A);
633	#endif	1056	#endif
		1057
		1058	if (ev_is_active (&sigev))
		1059	{
		1060	/* default loop */
		1061
		1062	ev_ref (EV_A);
		1063	ev_io_stop (EV_A_ &sigev);
		1064	close (sigpipe [0]);
		1065	close (sigpipe [1]);
		1066
		1067	while (pipe (sigpipe))
		1068	syserr ("(libev) error creating pipe");
		1069
		1070	siginit (EV_A);
		1071	}
		1072
		1073	postfork = 0;
634	}	1074	}
635		1075
636	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
637	struct ev_loop *	1077	struct ev_loop *
638	ev_loop_new (int methods)	1078	ev_loop_new (unsigned int flags)
639	{	1079	{
640	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1080	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
641		1081
		1082	memset (loop, 0, sizeof (struct ev_loop));
		1083
642	loop_init (EV_A_ methods);	1084	loop_init (EV_A_ flags);
643		1085
644	if (ev_methods (EV_A))	1086	if (ev_backend (EV_A))
645	return loop;	1087	return loop;
646		1088
647	return 0;	1089	return 0;
648	}	1090	}
649		1091
650	void	1092	void
651	ev_loop_destroy (EV_P)	1093	ev_loop_destroy (EV_P)
652	{	1094	{
653	loop_destroy (EV_A);	1095	loop_destroy (EV_A);
654	free (loop);	1096	ev_free (loop);
655	}	1097	}
656		1098
657	void	1099	void
658	ev_loop_fork (EV_P)	1100	ev_loop_fork (EV_P)
659	{	1101	{
660	loop_fork (EV_A);	1102	postfork = 1;
661	}	1103	}
662		1104
663	#endif	1105	#endif
664		1106
665	#if EV_MULTIPLICITY	1107	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	1108	struct ev_loop *
		1109	ev_default_loop_init (unsigned int flags)
670	#else	1110	#else
671	static int default_loop;
672
673	int	1111	int
		1112	ev_default_loop (unsigned int flags)
674	#endif	1113	#endif
675	ev_default_loop (int methods)
676	{	1114	{
677	if (sigpipe [0] == sigpipe [1])	1115	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	1116	if (pipe (sigpipe))
679	return 0;	1117	return 0;
680		1118
681	if (!default_loop)	1119	if (!ev_default_loop_ptr)
682	{	1120	{
683	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
684	struct ev_loop *loop = default_loop = &default_loop_struct;	1122	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685	#else	1123	#else
686	default_loop = 1;	1124	ev_default_loop_ptr = 1;
687	#endif	1125	#endif
688		1126
689	loop_init (EV_A_ methods);	1127	loop_init (EV_A_ flags);
690		1128
691	if (ev_method (EV_A))	1129	if (ev_backend (EV_A))
692	{	1130	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	1131	siginit (EV_A);
696		1132
697	#ifndef WIN32	1133	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	1134	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	1135	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	1136	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1137	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	1138	#endif
703	}	1139	}
704	else	1140	else
705	default_loop = 0;	1141	ev_default_loop_ptr = 0;
706	}	1142	}
707		1143
708	return default_loop;	1144	return ev_default_loop_ptr;
709	}	1145	}
710		1146
711	void	1147	void
712	ev_default_destroy (void)	1148	ev_default_destroy (void)
713	{	1149	{
714	#if EV_MULTIPLICITY	1150	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	1151	struct ev_loop *loop = ev_default_loop_ptr;
716	#endif	1152	#endif
717		1153
		1154	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	1155	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	1156	ev_signal_stop (EV_A_ &childev);
		1157	#endif
720		1158
721	ev_ref (EV_A); /* signal watcher */	1159	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	1160	ev_io_stop (EV_A_ &sigev);
723		1161
724	close (sigpipe [0]); sigpipe [0] = 0;	1162	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		1164
727	loop_destroy (EV_A);	1165	loop_destroy (EV_A);
728	}	1166	}
729		1167
730	void	1168	void
731	ev_default_fork (EV_P)	1169	ev_default_fork (void)
732	{	1170	{
733	loop_fork (EV_A);	1171	#if EV_MULTIPLICITY
		1172	struct ev_loop *loop = ev_default_loop_ptr;
		1173	#endif
734		1174
735	ev_io_stop (EV_A_ &sigev);	1175	if (backend)
736	close (sigpipe [0]);	1176	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	1177	}
743		1178
744	/*****************************************************************************/	1179	/*****************************************************************************/
745		1180
746	static void	1181	void
		1182	ev_invoke (EV_P_ void *w, int revents)
		1183	{
		1184	EV_CB_INVOKE ((W)w, revents);
		1185	}
		1186
		1187	void inline_speed
747	call_pending (EV_P)	1188	call_pending (EV_P)
748	{	1189	{
749	int pri;	1190	int pri;
750		1191
751	for (pri = NUMPRI; pri--; )	1192	for (pri = NUMPRI; pri--; )
752	while (pendingcnt [pri])	1193	while (pendingcnt [pri])
753	{	1194	{
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1195	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		1196
756	if (p->w)	1197	if (expect_true (p->w))
757	{	1198	{
		1199	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1200
758	p->w->pending = 0;	1201	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	1202	EV_CB_INVOKE (p->w, p->events);
760	}	1203	}
761	}	1204	}
762	}	1205	}
763		1206
764	static void	1207	void inline_size
765	timers_reify (EV_P)	1208	timers_reify (EV_P)
766	{	1209	{
767	while (timercnt && timers [0]->at <= mn_now)	1210	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1211	{
769	struct ev_timer *w = timers [0];	1212	ev_timer *w = timers [0];
		1213
		1214	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
770		1215
771	/* first reschedule or stop timer */	1216	/* first reschedule or stop timer */
772	if (w->repeat)	1217	if (w->repeat)
773	{	1218	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1219	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1220
775	w->at = mn_now + w->repeat;	1221	((WT)w)->at += w->repeat;
		1222	if (((WT)w)->at < mn_now)
		1223	((WT)w)->at = mn_now;
		1224
776	downheap ((WT *)timers, timercnt, 0);	1225	downheap ((WT *)timers, timercnt, 0);
777	}	1226	}
778	else	1227	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1228	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1229
781	event (EV_A_ (W)w, EV_TIMEOUT);	1230	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1231	}
783	}	1232	}
784		1233
785	static void	1234	#if EV_PERIODIC_ENABLE
		1235	void inline_size
786	periodics_reify (EV_P)	1236	periodics_reify (EV_P)
787	{	1237	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1238	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1239	{
790	struct ev_periodic *w = periodics [0];	1240	ev_periodic *w = periodics [0];
		1241
		1242	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
791		1243
792	/* first reschedule or stop timer */	1244	/* first reschedule or stop timer */
793	if (w->interval)	1245	if (w->reschedule_cb)
794	{	1246	{
		1247	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1248	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1249	downheap ((WT *)periodics, periodiccnt, 0);
		1250	}
		1251	else if (w->interval)
		1252	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1253	((WT)w)->at = w->offset + floor ((ev_rt_now + TIME_EPSILON - w->offset) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1256	}
799	else	1257	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1259
802	event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1261	}
804	}	1262	}
805		1263
806	static void	1264	static void noinline
807	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
808	{	1266	{
809	int i;	1267	int i;
810		1268
811	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
813	{	1271	{
814	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
815		1273
		1274	if (w->reschedule_cb)
		1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1276	else if (w->interval)
		1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1278	}
		1279
		1280	/* now rebuild the heap */
		1281	for (i = periodiccnt >> 1; i--; )
		1282	downheap ((WT *)periodics, periodiccnt, i);
		1283	}
		1284	#endif
		1285
		1286	#if EV_IDLE_ENABLE
		1287	void inline_size
		1288	idle_reify (EV_P)
		1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
817	{	1295	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1296	if (pendingcnt [pri])
		1297	break;
819		1298
820	if (fabs (diff) >= 1e-4)	1299	if (idlecnt [pri])
821	{	1300	{
822	ev_periodic_stop (EV_A_ w);	1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
823	ev_periodic_start (EV_A_ w);	1302	break;
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}	1303	}
827	}	1304	}
828	}	1305	}
829	}	1306	}
		1307	#endif
830		1308
831	inline int	1309	int inline_size
832	time_update_monotonic (EV_P)	1310	time_update_monotonic (EV_P)
833	{	1311	{
834	mn_now = get_clock ();	1312	mn_now = get_clock ();
835		1313
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1314	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1315	{
838	rt_now = rtmn_diff + mn_now;	1316	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1317	return 0;
840	}	1318	}
841	else	1319	else
842	{	1320	{
843	now_floor = mn_now;	1321	now_floor = mn_now;
844	rt_now = ev_time ();	1322	ev_rt_now = ev_time ();
845	return 1;	1323	return 1;
846	}	1324	}
847	}	1325	}
848		1326
849	static void	1327	void inline_size
850	time_update (EV_P)	1328	time_update (EV_P)
851	{	1329	{
852	int i;	1330	int i;
853		1331
854	#if EV_USE_MONOTONIC	1332	#if EV_USE_MONOTONIC
…		…
856	{	1334	{
857	if (time_update_monotonic (EV_A))	1335	if (time_update_monotonic (EV_A))
858	{	1336	{
859	ev_tstamp odiff = rtmn_diff;	1337	ev_tstamp odiff = rtmn_diff;
860		1338
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1339	/* loop a few times, before making important decisions.
		1340	* on the choice of "4": one iteration isn't enough,
		1341	* in case we get preempted during the calls to
		1342	* ev_time and get_clock. a second call is almost guaranteed
		1343	* to succeed in that case, though. and looping a few more times
		1344	* doesn't hurt either as we only do this on time-jumps or
		1345	* in the unlikely event of having been preempted here.
		1346	*/
		1347	for (i = 4; --i; )
862	{	1348	{
863	rtmn_diff = rt_now - mn_now;	1349	rtmn_diff = ev_rt_now - mn_now;
864		1350
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1351	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1352	return; /* all is well */
867		1353
868	rt_now = ev_time ();	1354	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1355	mn_now = get_clock ();
870	now_floor = mn_now;	1356	now_floor = mn_now;
871	}	1357	}
872		1358
		1359	# if EV_PERIODIC_ENABLE
873	periodics_reschedule (EV_A);	1360	periodics_reschedule (EV_A);
		1361	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1362	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1363	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1364	}
877	}	1365	}
878	else	1366	else
879	#endif	1367	#endif
880	{	1368	{
881	rt_now = ev_time ();	1369	ev_rt_now = ev_time ();
882		1370
883	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1371	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1372	{
		1373	#if EV_PERIODIC_ENABLE
885	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
		1375	#endif
886		1376
887	/* 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 */
888	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1380	}
891		1381
892	mn_now = rt_now;	1382	mn_now = ev_rt_now;
893	}	1383	}
894	}	1384	}
895		1385
896	void	1386	void
897	ev_ref (EV_P)	1387	ev_ref (EV_P)
…		…
908	static int loop_done;	1398	static int loop_done;
909		1399
910	void	1400	void
911	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
912	{	1402	{
913	double block;
914	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 */
915		1408
916	do	1409	do
917	{	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
918	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
919	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
920	{	1432	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1434	call_pending (EV_A);
923	}	1435	}
924		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
925	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1445	fd_reify (EV_A);
927		1446
928	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
929		1450
930	/* we only need this for !monotonic clockor timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
931	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
		1453	else
		1454	{
		1455	/* update time to cancel out callback processing overhead */
932	#if EV_USE_MONOTONIC	1456	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1457	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1458	time_update_monotonic (EV_A);
935	else	1459	else
936	#endif	1460	#endif
937	{	1461	{
938	rt_now = ev_time ();	1462	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1463	mn_now = ev_rt_now;
940	}	1464	}
941		1465
942	if (flags & EVLOOP_NONBLOCK || idlecnt)
943	block = 0.;
944	else
945	{
946	block = MAX_BLOCKTIME;	1466	block = MAX_BLOCKTIME;
947		1467
948	if (timercnt)	1468	if (timercnt)
949	{	1469	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1470	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951	if (block > to) block = to;	1471	if (block > to) block = to;
952	}	1472	}
953		1473
		1474	#if EV_PERIODIC_ENABLE
954	if (periodiccnt)	1475	if (periodiccnt)
955	{	1476	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1477	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957	if (block > to) block = to;	1478	if (block > to) block = to;
958	}	1479	}
		1480	#endif
959		1481
960	if (block < 0.) block = 0.;	1482	if (expect_false (block < 0.)) block = 0.;
961	}	1483	}
962		1484
		1485	++loop_count;
963	method_poll (EV_A_ block);	1486	backend_poll (EV_A_ block);
		1487	}
964		1488
965	/* update rt_now, do magic */	1489	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1490	time_update (EV_A);
967		1491
968	/* queue pending timers and reschedule them */	1492	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1493	timers_reify (EV_A); /* relative timers called last */
		1494	#if EV_PERIODIC_ENABLE
970	periodics_reify (EV_A); /* absolute timers called first */	1495	periodics_reify (EV_A); /* absolute timers called first */
		1496	#endif
971		1497
		1498	#if EV_IDLE_ENABLE
972	/* queue idle watchers unless io or timers are pending */	1499	/* queue idle watchers unless other events are pending */
973	if (!pendingcnt)	1500	idle_reify (EV_A);
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1501	#endif
975		1502
976	/* queue check watchers, to be executed first */	1503	/* queue check watchers, to be executed first */
977	if (checkcnt)	1504	if (expect_false (checkcnt))
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1505	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1506
980	call_pending (EV_A);	1507	call_pending (EV_A);
		1508
981	}	1509	}
982	while (activecnt && !loop_done);	1510	while (expect_true (activecnt && !loop_done));
983		1511
984	if (loop_done != 2)	1512	if (loop_done == EVUNLOOP_ONE)
985	loop_done = 0;	1513	loop_done = EVUNLOOP_CANCEL;
986	}	1514	}
987		1515
988	void	1516	void
989	ev_unloop (EV_P_ int how)	1517	ev_unloop (EV_P_ int how)
990	{	1518	{
991	loop_done = how;	1519	loop_done = how;
992	}	1520	}
993		1521
994	/*****************************************************************************/	1522	/*****************************************************************************/
995		1523
996	inline void	1524	void inline_size
997	wlist_add (WL *head, WL elem)	1525	wlist_add (WL *head, WL elem)
998	{	1526	{
999	elem->next = *head;	1527	elem->next = *head;
1000	*head = elem;	1528	*head = elem;
1001	}	1529	}
1002		1530
1003	inline void	1531	void inline_size
1004	wlist_del (WL *head, WL elem)	1532	wlist_del (WL *head, WL elem)
1005	{	1533	{
1006	while (*head)	1534	while (*head)
1007	{	1535	{
1008	if (*head == elem)	1536	if (*head == elem)
…		…
1013		1541
1014	head = &(*head)->next;	1542	head = &(*head)->next;
1015	}	1543	}
1016	}	1544	}
1017		1545
1018	inline void	1546	void inline_speed
1019	ev_clear_pending (EV_P_ W w)	1547	clear_pending (EV_P_ W w)
1020	{	1548	{
1021	if (w->pending)	1549	if (w->pending)
1022	{	1550	{
1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1551	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1024	w->pending = 0;	1552	w->pending = 0;
1025	}	1553	}
1026	}	1554	}
1027		1555
1028	inline void	1556	int
		1557	ev_clear_pending (EV_P_ void *w)
		1558	{
		1559	W w_ = (W)w;
		1560	int pending = w_->pending;
		1561
		1562	if (expect_true (pending))
		1563	{
		1564	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1565	w_->pending = 0;
		1566	p->w = 0;
		1567	return p->events;
		1568	}
		1569	else
		1570	return 0;
		1571	}
		1572
		1573	void inline_size
		1574	pri_adjust (EV_P_ W w)
		1575	{
		1576	int pri = w->priority;
		1577	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1578	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1579	w->priority = pri;
		1580	}
		1581
		1582	void inline_speed
1029	ev_start (EV_P_ W w, int active)	1583	ev_start (EV_P_ W w, int active)
1030	{	1584	{
1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1585	pri_adjust (EV_A_ w);
1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1033
1034	w->active = active;	1586	w->active = active;
1035	ev_ref (EV_A);	1587	ev_ref (EV_A);
1036	}	1588	}
1037		1589
1038	inline void	1590	void inline_size
1039	ev_stop (EV_P_ W w)	1591	ev_stop (EV_P_ W w)
1040	{	1592	{
1041	ev_unref (EV_A);	1593	ev_unref (EV_A);
1042	w->active = 0;	1594	w->active = 0;
1043	}	1595	}
1044		1596
1045	/*****************************************************************************/	1597	/*****************************************************************************/
1046		1598
1047	void	1599	void noinline
1048	ev_io_start (EV_P_ struct ev_io *w)	1600	ev_io_start (EV_P_ ev_io *w)
1049	{	1601	{
1050	int fd = w->fd;	1602	int fd = w->fd;
1051		1603
1052	if (ev_is_active (w))	1604	if (expect_false (ev_is_active (w)))
1053	return;	1605	return;
1054		1606
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1607	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1608
1057	ev_start (EV_A_ (W)w, 1);	1609	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1610	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1611	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1612
1061	fd_change (EV_A_ fd);	1613	fd_change (EV_A_ fd);
1062	}	1614	}
1063		1615
1064	void	1616	void noinline
1065	ev_io_stop (EV_P_ struct ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
1066	{	1618	{
1067	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1620	if (expect_false (!ev_is_active (w)))
1069	return;	1621	return;
		1622
		1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1070		1624
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1625	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1073		1627
1074	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd);
1075	}	1629	}
1076		1630
1077	void	1631	void noinline
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
1079	{	1633	{
1080	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1081	return;	1635	return;
1082		1636
1083	w->at += mn_now;	1637	((WT)w)->at += mn_now;
1084		1638
1085	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.));
1086		1640
1087	ev_start (EV_A_ (W)w, ++timercnt);	1641	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1642	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1643	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1644	upheap ((WT *)timers, timercnt - 1);
1091	}
1092		1645
1093	void	1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1647	}
		1648
		1649	void noinline
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1650	ev_timer_stop (EV_P_ ev_timer *w)
1095	{	1651	{
1096	ev_clear_pending (EV_A_ (W)w);	1652	clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1098	return;	1654	return;
1099		1655
1100	if (w->active < timercnt--)	1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1657
		1658	{
		1659	int active = ((W)w)->active;
		1660
		1661	if (expect_true (--active < --timercnt))
1101	{	1662	{
1102	timers [w->active - 1] = timers [timercnt];	1663	timers [active] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1664	adjustheap ((WT *)timers, timercnt, active);
1104	}	1665	}
		1666	}
1105		1667
1106	w->at = w->repeat;	1668	((WT)w)->at -= mn_now;
1107		1669
1108	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1109	}	1671	}
1110		1672
1111	void	1673	void noinline
1112	ev_timer_again (EV_P_ struct ev_timer *w)	1674	ev_timer_again (EV_P_ ev_timer *w)
1113	{	1675	{
1114	if (ev_is_active (w))	1676	if (ev_is_active (w))
1115	{	1677	{
1116	if (w->repeat)	1678	if (w->repeat)
1117	{	1679	{
1118	w->at = mn_now + w->repeat;	1680	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1681	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1682	}
1121	else	1683	else
1122	ev_timer_stop (EV_A_ w);	1684	ev_timer_stop (EV_A_ w);
1123	}	1685	}
1124	else if (w->repeat)	1686	else if (w->repeat)
		1687	{
		1688	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
		1690	}
1126	}	1691	}
1127		1692
1128	void	1693	#if EV_PERIODIC_ENABLE
		1694	void noinline
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1130	{	1696	{
1131	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1132	return;	1698	return;
1133		1699
		1700	if (w->reschedule_cb)
		1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1702	else if (w->interval)
		1703	{
1134	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.));
1135
1136	/* 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 */
1137	if (w->interval)
1138	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;
1139		1710
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1712	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap ((WT *)periodics, periodiccnt - 1);
1144	}
1145		1715
1146	void	1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1717	}
		1718
		1719	void noinline
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1148	{	1721	{
1149	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1723	if (expect_false (!ev_is_active (w)))
1151	return;	1724	return;
1152		1725
1153	if (w->active < periodiccnt--)	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730
		1731	if (expect_true (--active < --periodiccnt))
1154	{	1732	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1733	periodics [active] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1734	adjustheap ((WT *)periodics, periodiccnt, active);
1157	}	1735	}
		1736	}
1158		1737
1159	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1160	}	1739	}
1161		1740
1162	void	1741	void noinline
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1742	ev_periodic_again (EV_P_ ev_periodic *w)
1164	{	1743	{
1165	if (ev_is_active (w))	1744	/* TODO: use adjustheap and recalculation */
1166	return;
1167
1168	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );
1170	idles [idlecnt - 1] = w;
1171	}
1172
1173	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{
1176	ev_clear_pending (EV_A_ (W)w);
1177	if (ev_is_active (w))
1178	return;
1179
1180	idles [w->active - 1] = idles [--idlecnt];
1181	ev_stop (EV_A_ (W)w);	1745	ev_periodic_stop (EV_A_ w);
		1746	ev_periodic_start (EV_A_ w);
1182	}	1747	}
1183		1748	#endif
1184	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
1186	{
1187	if (ev_is_active (w))
1188	return;
1189
1190	ev_start (EV_A_ (W)w, ++preparecnt);
1191	array_needsize (prepares, preparemax, preparecnt, );
1192	prepares [preparecnt - 1] = w;
1193	}
1194
1195	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197	{
1198	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))
1200	return;
1201
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);
1226	}
1227		1749
1228	#ifndef SA_RESTART	1750	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1751	# define SA_RESTART 0
1230	#endif	1752	#endif
1231		1753
1232	void	1754	void noinline
1233	ev_signal_start (EV_P_ struct ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1234	{	1756	{
1235	#if EV_MULTIPLICITY	1757	#if EV_MULTIPLICITY
1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1237	#endif	1759	#endif
1238	if (ev_is_active (w))	1760	if (expect_false (ev_is_active (w)))
1239	return;	1761	return;
1240		1762
1241	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));
1242		1764
1243	ev_start (EV_A_ (W)w, 1);	1765	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1766	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1767	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1768
1247	if (!w->next)	1769	if (!((WL)w)->next)
1248	{	1770	{
		1771	#if _WIN32
		1772	signal (w->signum, sighandler);
		1773	#else
1249	struct sigaction sa;	1774	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1775	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1776	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1777	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1778	sigaction (w->signum, &sa, 0);
		1779	#endif
1254	}	1780	}
1255	}	1781	}
1256		1782
1257	void	1783	void noinline
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1784	ev_signal_stop (EV_P_ ev_signal *w)
1259	{	1785	{
1260	ev_clear_pending (EV_A_ (W)w);	1786	clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1787	if (expect_false (!ev_is_active (w)))
1262	return;	1788	return;
1263		1789
1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1790	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1265	ev_stop (EV_A_ (W)w);	1791	ev_stop (EV_A_ (W)w);
1266		1792
1267	if (!signals [w->signum - 1].head)	1793	if (!signals [w->signum - 1].head)
1268	signal (w->signum, SIG_DFL);	1794	signal (w->signum, SIG_DFL);
1269	}	1795	}
1270		1796
1271	void	1797	void
1272	ev_child_start (EV_P_ struct ev_child *w)	1798	ev_child_start (EV_P_ ev_child *w)
1273	{	1799	{
1274	#if EV_MULTIPLICITY	1800	#if EV_MULTIPLICITY
1275	assert (("child watchers are only supported in the default loop", loop == default_loop));	1801	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1276	#endif	1802	#endif
1277	if (ev_is_active (w))	1803	if (expect_false (ev_is_active (w)))
1278	return;	1804	return;
1279		1805
1280	ev_start (EV_A_ (W)w, 1);	1806	ev_start (EV_A_ (W)w, 1);
1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1807	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1282	}	1808	}
1283		1809
1284	void	1810	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1811	ev_child_stop (EV_P_ ev_child *w)
1286	{	1812	{
1287	ev_clear_pending (EV_A_ (W)w);	1813	clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1814	if (expect_false (!ev_is_active (w)))
1289	return;	1815	return;
1290		1816
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1817	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1818	ev_stop (EV_A_ (W)w);
1293	}	1819	}
1294		1820
		1821	#if EV_STAT_ENABLE
		1822
		1823	# ifdef _WIN32
		1824	# undef lstat
		1825	# define lstat(a,b) _stati64 (a,b)
		1826	# endif
		1827
		1828	#define DEF_STAT_INTERVAL 5.0074891
		1829	#define MIN_STAT_INTERVAL 0.1074891
		1830
		1831	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1832
		1833	#if EV_USE_INOTIFY
		1834	# define EV_INOTIFY_BUFSIZE 8192
		1835
		1836	static void noinline
		1837	infy_add (EV_P_ ev_stat *w)
		1838	{
		1839	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);
		1840
		1841	if (w->wd < 0)
		1842	{
		1843	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1844
		1845	/* monitor some parent directory for speedup hints */
		1846	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1847	{
		1848	char path [4096];
		1849	strcpy (path, w->path);
		1850
		1851	do
		1852	{
		1853	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1854	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1855
		1856	char *pend = strrchr (path, '/');
		1857
		1858	if (!pend)
		1859	break; /* whoops, no '/', complain to your admin */
		1860
		1861	*pend = 0;
		1862	w->wd = inotify_add_watch (fs_fd, path, mask);
		1863	}
		1864	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1865	}
		1866	}
		1867	else
		1868	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1869
		1870	if (w->wd >= 0)
		1871	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1872	}
		1873
		1874	static void noinline
		1875	infy_del (EV_P_ ev_stat *w)
		1876	{
		1877	int slot;
		1878	int wd = w->wd;
		1879
		1880	if (wd < 0)
		1881	return;
		1882
		1883	w->wd = -2;
		1884	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1885	wlist_del (&fs_hash [slot].head, (WL)w);
		1886
		1887	/* remove this watcher, if others are watching it, they will rearm */
		1888	inotify_rm_watch (fs_fd, wd);
		1889	}
		1890
		1891	static void noinline
		1892	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1893	{
		1894	if (slot < 0)
		1895	/* overflow, need to check for all hahs slots */
		1896	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1897	infy_wd (EV_A_ slot, wd, ev);
		1898	else
		1899	{
		1900	WL w_;
		1901
		1902	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1903	{
		1904	ev_stat *w = (ev_stat *)w_;
		1905	w_ = w_->next; /* lets us remove this watcher and all before it */
		1906
		1907	if (w->wd == wd || wd == -1)
		1908	{
		1909	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1910	{
		1911	w->wd = -1;
		1912	infy_add (EV_A_ w); /* re-add, no matter what */
		1913	}
		1914
		1915	stat_timer_cb (EV_A_ &w->timer, 0);
		1916	}
		1917	}
		1918	}
		1919	}
		1920
		1921	static void
		1922	infy_cb (EV_P_ ev_io *w, int revents)
		1923	{
		1924	char buf [EV_INOTIFY_BUFSIZE];
		1925	struct inotify_event *ev = (struct inotify_event *)buf;
		1926	int ofs;
		1927	int len = read (fs_fd, buf, sizeof (buf));
		1928
		1929	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1930	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1931	}
		1932
		1933	void inline_size
		1934	infy_init (EV_P)
		1935	{
		1936	if (fs_fd != -2)
		1937	return;
		1938
		1939	fs_fd = inotify_init ();
		1940
		1941	if (fs_fd >= 0)
		1942	{
		1943	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1944	ev_set_priority (&fs_w, EV_MAXPRI);
		1945	ev_io_start (EV_A_ &fs_w);
		1946	}
		1947	}
		1948
		1949	void inline_size
		1950	infy_fork (EV_P)
		1951	{
		1952	int slot;
		1953
		1954	if (fs_fd < 0)
		1955	return;
		1956
		1957	close (fs_fd);
		1958	fs_fd = inotify_init ();
		1959
		1960	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1961	{
		1962	WL w_ = fs_hash [slot].head;
		1963	fs_hash [slot].head = 0;
		1964
		1965	while (w_)
		1966	{
		1967	ev_stat *w = (ev_stat *)w_;
		1968	w_ = w_->next; /* lets us add this watcher */
		1969
		1970	w->wd = -1;
		1971
		1972	if (fs_fd >= 0)
		1973	infy_add (EV_A_ w); /* re-add, no matter what */
		1974	else
		1975	ev_timer_start (EV_A_ &w->timer);
		1976	}
		1977
		1978	}
		1979	}
		1980
		1981	#endif
		1982
		1983	void
		1984	ev_stat_stat (EV_P_ ev_stat *w)
		1985	{
		1986	if (lstat (w->path, &w->attr) < 0)
		1987	w->attr.st_nlink = 0;
		1988	else if (!w->attr.st_nlink)
		1989	w->attr.st_nlink = 1;
		1990	}
		1991
		1992	static void noinline
		1993	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1994	{
		1995	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1996
		1997	/* we copy this here each the time so that */
		1998	/* prev has the old value when the callback gets invoked */
		1999	w->prev = w->attr;
		2000	ev_stat_stat (EV_A_ w);
		2001
		2002	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2003	if (
		2004	w->prev.st_dev != w->attr.st_dev
		2005	|| w->prev.st_ino != w->attr.st_ino
		2006	|| w->prev.st_mode != w->attr.st_mode
		2007	|| w->prev.st_nlink != w->attr.st_nlink
		2008	|| w->prev.st_uid != w->attr.st_uid
		2009	|| w->prev.st_gid != w->attr.st_gid
		2010	|| w->prev.st_rdev != w->attr.st_rdev
		2011	|| w->prev.st_size != w->attr.st_size
		2012	|| w->prev.st_atime != w->attr.st_atime
		2013	|| w->prev.st_mtime != w->attr.st_mtime
		2014	|| w->prev.st_ctime != w->attr.st_ctime
		2015	) {
		2016	#if EV_USE_INOTIFY
		2017	infy_del (EV_A_ w);
		2018	infy_add (EV_A_ w);
		2019	ev_stat_stat (EV_A_ w); /* avoid race... */
		2020	#endif
		2021
		2022	ev_feed_event (EV_A_ w, EV_STAT);
		2023	}
		2024	}
		2025
		2026	void
		2027	ev_stat_start (EV_P_ ev_stat *w)
		2028	{
		2029	if (expect_false (ev_is_active (w)))
		2030	return;
		2031
		2032	/* since we use memcmp, we need to clear any padding data etc. */
		2033	memset (&w->prev, 0, sizeof (ev_statdata));
		2034	memset (&w->attr, 0, sizeof (ev_statdata));
		2035
		2036	ev_stat_stat (EV_A_ w);
		2037
		2038	if (w->interval < MIN_STAT_INTERVAL)
		2039	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2040
		2041	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2042	ev_set_priority (&w->timer, ev_priority (w));
		2043
		2044	#if EV_USE_INOTIFY
		2045	infy_init (EV_A);
		2046
		2047	if (fs_fd >= 0)
		2048	infy_add (EV_A_ w);
		2049	else
		2050	#endif
		2051	ev_timer_start (EV_A_ &w->timer);
		2052
		2053	ev_start (EV_A_ (W)w, 1);
		2054	}
		2055
		2056	void
		2057	ev_stat_stop (EV_P_ ev_stat *w)
		2058	{
		2059	clear_pending (EV_A_ (W)w);
		2060	if (expect_false (!ev_is_active (w)))
		2061	return;
		2062
		2063	#if EV_USE_INOTIFY
		2064	infy_del (EV_A_ w);
		2065	#endif
		2066	ev_timer_stop (EV_A_ &w->timer);
		2067
		2068	ev_stop (EV_A_ (W)w);
		2069	}
		2070	#endif
		2071
		2072	#if EV_IDLE_ENABLE
		2073	void
		2074	ev_idle_start (EV_P_ ev_idle *w)
		2075	{
		2076	if (expect_false (ev_is_active (w)))
		2077	return;
		2078
		2079	pri_adjust (EV_A_ (W)w);
		2080
		2081	{
		2082	int active = ++idlecnt [ABSPRI (w)];
		2083
		2084	++idleall;
		2085	ev_start (EV_A_ (W)w, active);
		2086
		2087	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2088	idles [ABSPRI (w)][active - 1] = w;
		2089	}
		2090	}
		2091
		2092	void
		2093	ev_idle_stop (EV_P_ ev_idle *w)
		2094	{
		2095	clear_pending (EV_A_ (W)w);
		2096	if (expect_false (!ev_is_active (w)))
		2097	return;
		2098
		2099	{
		2100	int active = ((W)w)->active;
		2101
		2102	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2103	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2104
		2105	ev_stop (EV_A_ (W)w);
		2106	--idleall;
		2107	}
		2108	}
		2109	#endif
		2110
		2111	void
		2112	ev_prepare_start (EV_P_ ev_prepare *w)
		2113	{
		2114	if (expect_false (ev_is_active (w)))
		2115	return;
		2116
		2117	ev_start (EV_A_ (W)w, ++preparecnt);
		2118	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2119	prepares [preparecnt - 1] = w;
		2120	}
		2121
		2122	void
		2123	ev_prepare_stop (EV_P_ ev_prepare *w)
		2124	{
		2125	clear_pending (EV_A_ (W)w);
		2126	if (expect_false (!ev_is_active (w)))
		2127	return;
		2128
		2129	{
		2130	int active = ((W)w)->active;
		2131	prepares [active - 1] = prepares [--preparecnt];
		2132	((W)prepares [active - 1])->active = active;
		2133	}
		2134
		2135	ev_stop (EV_A_ (W)w);
		2136	}
		2137
		2138	void
		2139	ev_check_start (EV_P_ ev_check *w)
		2140	{
		2141	if (expect_false (ev_is_active (w)))
		2142	return;
		2143
		2144	ev_start (EV_A_ (W)w, ++checkcnt);
		2145	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2146	checks [checkcnt - 1] = w;
		2147	}
		2148
		2149	void
		2150	ev_check_stop (EV_P_ ev_check *w)
		2151	{
		2152	clear_pending (EV_A_ (W)w);
		2153	if (expect_false (!ev_is_active (w)))
		2154	return;
		2155
		2156	{
		2157	int active = ((W)w)->active;
		2158	checks [active - 1] = checks [--checkcnt];
		2159	((W)checks [active - 1])->active = active;
		2160	}
		2161
		2162	ev_stop (EV_A_ (W)w);
		2163	}
		2164
		2165	#if EV_EMBED_ENABLE
		2166	void noinline
		2167	ev_embed_sweep (EV_P_ ev_embed *w)
		2168	{
		2169	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2170	}
		2171
		2172	static void
		2173	embed_cb (EV_P_ ev_io *io, int revents)
		2174	{
		2175	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2176
		2177	if (ev_cb (w))
		2178	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2179	else
		2180	ev_embed_sweep (loop, w);
		2181	}
		2182
		2183	void
		2184	ev_embed_start (EV_P_ ev_embed *w)
		2185	{
		2186	if (expect_false (ev_is_active (w)))
		2187	return;
		2188
		2189	{
		2190	struct ev_loop *loop = w->loop;
		2191	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2192	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2193	}
		2194
		2195	ev_set_priority (&w->io, ev_priority (w));
		2196	ev_io_start (EV_A_ &w->io);
		2197
		2198	ev_start (EV_A_ (W)w, 1);
		2199	}
		2200
		2201	void
		2202	ev_embed_stop (EV_P_ ev_embed *w)
		2203	{
		2204	clear_pending (EV_A_ (W)w);
		2205	if (expect_false (!ev_is_active (w)))
		2206	return;
		2207
		2208	ev_io_stop (EV_A_ &w->io);
		2209
		2210	ev_stop (EV_A_ (W)w);
		2211	}
		2212	#endif
		2213
		2214	#if EV_FORK_ENABLE
		2215	void
		2216	ev_fork_start (EV_P_ ev_fork *w)
		2217	{
		2218	if (expect_false (ev_is_active (w)))
		2219	return;
		2220
		2221	ev_start (EV_A_ (W)w, ++forkcnt);
		2222	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2223	forks [forkcnt - 1] = w;
		2224	}
		2225
		2226	void
		2227	ev_fork_stop (EV_P_ ev_fork *w)
		2228	{
		2229	clear_pending (EV_A_ (W)w);
		2230	if (expect_false (!ev_is_active (w)))
		2231	return;
		2232
		2233	{
		2234	int active = ((W)w)->active;
		2235	forks [active - 1] = forks [--forkcnt];
		2236	((W)forks [active - 1])->active = active;
		2237	}
		2238
		2239	ev_stop (EV_A_ (W)w);
		2240	}
		2241	#endif
		2242
1295	/*****************************************************************************/	2243	/*****************************************************************************/
1296		2244
1297	struct ev_once	2245	struct ev_once
1298	{	2246	{
1299	struct ev_io io;	2247	ev_io io;
1300	struct ev_timer to;	2248	ev_timer to;
1301	void (*cb)(int revents, void *arg);	2249	void (*cb)(int revents, void *arg);
1302	void *arg;	2250	void *arg;
1303	};	2251	};
1304		2252
1305	static void	2253	static void
…		…
1308	void (*cb)(int revents, void *arg) = once->cb;	2256	void (*cb)(int revents, void *arg) = once->cb;
1309	void *arg = once->arg;	2257	void *arg = once->arg;
1310		2258
1311	ev_io_stop (EV_A_ &once->io);	2259	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	2260	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	2261	ev_free (once);
1314		2262
1315	cb (revents, arg);	2263	cb (revents, arg);
1316	}	2264	}
1317		2265
1318	static void	2266	static void
1319	once_cb_io (EV_P_ struct ev_io *w, int revents)	2267	once_cb_io (EV_P_ ev_io *w, int revents)
1320	{	2268	{
1321	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2269	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1322	}	2270	}
1323		2271
1324	static void	2272	static void
1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2273	once_cb_to (EV_P_ ev_timer *w, int revents)
1326	{	2274	{
1327	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2275	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1328	}	2276	}
1329		2277
1330	void	2278	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2279	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1332	{	2280	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	2281	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1334		2282
1335	if (!once)	2283	if (expect_false (!once))
		2284	{
1336	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2285	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1337	else	2286	return;
1338	{	2287	}
		2288
1339	once->cb = cb;	2289	once->cb = cb;
1340	once->arg = arg;	2290	once->arg = arg;
1341		2291
1342	ev_watcher_init (&once->io, once_cb_io);	2292	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	2293	if (fd >= 0)
1344	{	2294	{
1345	ev_io_set (&once->io, fd, events);	2295	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	2296	ev_io_start (EV_A_ &once->io);
1347	}	2297	}
1348		2298
1349	ev_watcher_init (&once->to, once_cb_to);	2299	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	2300	if (timeout >= 0.)
1351	{	2301	{
1352	ev_timer_set (&once->to, timeout, 0.);	2302	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	2303	ev_timer_start (EV_A_ &once->to);
1354	}
1355	}	2304	}
1356	}	2305	}
1357		2306
		2307	#ifdef __cplusplus
		2308	}
		2309	#endif
		2310

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