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Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.180 by root, Tue Dec 11 22:04:55 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
91	/**/	219	/**/
92		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97
98	#include "ev.h"
99		234
100	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	237	# define noinline __attribute__ ((noinline))
103	#else	238	#else
104	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
105	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
106	#endif	244	#endif
107		245
108	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
110		255
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
114	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
117		265
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		267
		268	#ifdef _WIN32
		269	# include "ev_win32.c"
		270	#endif
		271
120	/*****************************************************************************/	272	/*****************************************************************************/
121		273
		274	static void (*syserr_cb)(const char *msg);
		275
		276	void
		277	ev_set_syserr_cb (void (*cb)(const char *msg))
		278	{
		279	syserr_cb = cb;
		280	}
		281
		282	static void noinline
		283	syserr (const char *msg)
		284	{
		285	if (!msg)
		286	msg = "(libev) system error";
		287
		288	if (syserr_cb)
		289	syserr_cb (msg);
		290	else
		291	{
		292	perror (msg);
		293	abort ();
		294	}
		295	}
		296
		297	static void *(*alloc)(void *ptr, long size);
		298
		299	void
		300	ev_set_allocator (void *(*cb)(void *ptr, long size))
		301	{
		302	alloc = cb;
		303	}
		304
		305	inline_speed void *
		306	ev_realloc (void *ptr, long size)
		307	{
		308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		309
		310	if (!ptr && size)
		311	{
		312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		313	abort ();
		314	}
		315
		316	return ptr;
		317	}
		318
		319	#define ev_malloc(size) ev_realloc (0, (size))
		320	#define ev_free(ptr) ev_realloc ((ptr), 0)
		321
		322	/*****************************************************************************/
		323
122	typedef struct	324	typedef struct
123	{	325	{
124	struct ev_watcher_list *head;	326	WL head;
125	unsigned char events;	327	unsigned char events;
126	unsigned char reify;	328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
127	} ANFD;	332	} ANFD;
128		333
129	typedef struct	334	typedef struct
130	{	335	{
131	W w;	336	W w;
132	int events;	337	int events;
133	} ANPENDING;	338	} ANPENDING;
134		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
135	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
136		348
137	struct ev_loop	349	struct ev_loop
138	{	350	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	354	#include "ev_vars.h"
141	};
142	# undef VAR	355	#undef VAR
		356	};
143	# include "ev_wrap.h"	357	#include "ev_wrap.h"
		358
		359	static struct ev_loop default_loop_struct;
		360	struct ev_loop *ev_default_loop_ptr;
144		361
145	#else	362	#else
146		363
		364	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	366	#include "ev_vars.h"
149	# undef VAR	367	#undef VAR
		368
		369	static int ev_default_loop_ptr;
150		370
151	#endif	371	#endif
152		372
153	/*****************************************************************************/	373	/*****************************************************************************/
154		374
155	inline ev_tstamp	375	ev_tstamp
156	ev_time (void)	376	ev_time (void)
157	{	377	{
158	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
159	struct timespec ts;	379	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	386	#endif
167	}	387	}
168		388
169	inline ev_tstamp	389	ev_tstamp inline_size
170	get_clock (void)	390	get_clock (void)
171	{	391	{
172	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
174	{	394	{
…		…
179	#endif	399	#endif
180		400
181	return ev_time ();	401	return ev_time ();
182	}	402	}
183		403
		404	#if EV_MULTIPLICITY
184	ev_tstamp	405	ev_tstamp
185	ev_now (EV_P)	406	ev_now (EV_P)
186	{	407	{
187	return rt_now;	408	return ev_rt_now;
188	}	409	}
		410	#endif
189		411
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
191		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
		439
192	#define array_needsize(base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
194	{ \	442	{ \
195	int newcnt = cur; \	443	int ocur_ = (cur); \
196	do \	444	(base) = (type *)array_realloc \
197	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
198	newcnt = array_roundsize (base, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
199	} \	447	}
200	while ((cnt) > newcnt); \	448
		449	#if 0
		450	#define array_slim(type,stem) \
		451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201	\	452	{ \
202	base = realloc (base, sizeof (*base) * (newcnt)); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
203	init (base + cur, newcnt - cur); \	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204	cur = newcnt; \	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205	}	456	}
		457	#endif
		458
		459	#define array_free(stem, idx) \
		460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		461
207	/*****************************************************************************/	462	/*****************************************************************************/
208		463
209	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
210	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
211	{	494	{
212	while (count--)	495	while (count--)
213	{	496	{
214	base->head = 0;	497	base->head = 0;
…		…
217		500
218	++base;	501	++base;
219	}	502	}
220	}	503	}
221		504
222	static void	505	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)	506	fd_event (EV_P_ int fd, int revents)
248	{	507	{
249	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	509	ev_io *w;
251		510
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	512	{
254	int ev = w->events & events;	513	int ev = w->events & revents;
255		514
256	if (ev)	515	if (ev)
257	event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
258	}	517	}
259	}	518	}
260		519
261	/*****************************************************************************/	520	void
		521	ev_feed_fd_event (EV_P_ int fd, int revents)
		522	{
		523	if (fd >= 0 && fd < anfdmax)
		524	fd_event (EV_A_ fd, revents);
		525	}
262		526
263	static void	527	void inline_size
264	fd_reify (EV_P)	528	fd_reify (EV_P)
265	{	529	{
266	int i;	530	int i;
267		531
268	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
269	{	533	{
270	int fd = fdchanges [i];	534	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	536	ev_io *w;
273		537
274	int events = 0;	538	int events = 0;
275		539
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	541	events |= w->events;
278		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
279	anfd->reify = 0;	552	anfd->reify = 0;
280		553
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	555	anfd->events = events;
285	}
286	}	556	}
287		557
288	fdchangecnt = 0;	558	fdchangecnt = 0;
289	}	559	}
290		560
291	static void	561	void inline_size
292	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
293	{	563	{
294	if (anfds [fd].reify || fdchangecnt < 0)	564	if (expect_false (anfds [fd].reify))
295	return;	565	return;
296		566
297	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
298		568
299	++fdchangecnt;	569	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
302	}	572	}
303		573
304	static void	574	void inline_speed
305	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
306	{	576	{
307	struct ev_io *w;	577	ev_io *w;
308		578
309	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
310	{	580	{
311	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	583	}
		584	}
		585
		586	int inline_size
		587	fd_valid (int fd)
		588	{
		589	#ifdef _WIN32
		590	return _get_osfhandle (fd) != -1;
		591	#else
		592	return fcntl (fd, F_GETFD) != -1;
		593	#endif
314	}	594	}
315		595
316	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
317	static void	597	static void noinline
318	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
319	{	599	{
320	int fd;	600	int fd;
321		601
322	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	603	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
326	}	606	}
327		607
328	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	609	static void noinline
330	fd_enomem (EV_P)	610	fd_enomem (EV_P)
331	{	611	{
332	int fd = anfdmax;	612	int fd;
333		613
334	while (fd--)	614	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	615	if (anfds [fd].events)
336	{	616	{
337	close (fd);
338	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
339	return;	618	return;
340	}	619	}
341	}	620	}
342		621
343	/* susually called after fork if method needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
344	static void	623	static void noinline
345	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
346	{	625	{
347	int fd;	626	int fd;
348		627
349	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	629	if (anfds [fd].events)
352	{	630	{
353	anfds [fd].events = 0;	631	anfds [fd].events = 0;
354	fd_change (fd);	632	fd_change (EV_A_ fd);
355	}	633	}
356	}	634	}
357		635
358	/*****************************************************************************/	636	/*****************************************************************************/
359		637
360	static void	638	void inline_speed
361	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
362	{	640	{
363	WT w = heap [k];	641	WT w = heap [k];
364		642
365	while (k && heap [k >> 1]->at > w->at)	643	while (k)
366	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
367	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
368	heap [k]->active = k + 1;	651	((W)heap [k])->active = k + 1;
369	k >>= 1;	652	k = p;
370	}	653	}
371		654
372	heap [k] = w;	655	heap [k] = w;
373	heap [k]->active = k + 1;	656	((W)heap [k])->active = k + 1;
374		657
375	}	658	}
376		659
377	static void	660	void inline_speed
378	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
379	{	662	{
380	WT w = heap [k];	663	WT w = heap [k];
381		664
382	while (k < (N >> 1))	665	for (;;)
383	{	666	{
384	int j = k << 1;	667	int c = (k << 1) + 1;
385		668
386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
387	++j;
388
389	if (w->at <= heap [j]->at)
390	break;	670	break;
391		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
392	heap [k] = heap [j];	678	heap [k] = heap [c];
393	heap [k]->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
394	k = j;	681	k = c;
395	}	682	}
396		683
397	heap [k] = w;	684	heap [k] = w;
398	heap [k]->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686	}
		687
		688	void inline_size
		689	adjustheap (WT *heap, int N, int k)
		690	{
		691	upheap (heap, k);
		692	downheap (heap, N, k);
399	}	693	}
400		694
401	/*****************************************************************************/	695	/*****************************************************************************/
402		696
403	typedef struct	697	typedef struct
404	{	698	{
405	struct ev_watcher_list *head;	699	WL head;
406	sig_atomic_t volatile gotsig;	700	sig_atomic_t volatile gotsig;
407	} ANSIG;	701	} ANSIG;
408		702
409	static ANSIG *signals;	703	static ANSIG *signals;
410	static int signalmax;	704	static int signalmax;
411		705
412	static int sigpipe [2];	706	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
		708	static ev_io sigev;
414		709
415	static void	710	void inline_size
416	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
417	{	712	{
418	while (count--)	713	while (count--)
419	{	714	{
420	base->head = 0;	715	base->head = 0;
…		…
425	}	720	}
426		721
427	static void	722	static void
428	sighandler (int signum)	723	sighandler (int signum)
429	{	724	{
		725	#if _WIN32
		726	signal (signum, sighandler);
		727	#endif
		728
430	signals [signum - 1].gotsig = 1;	729	signals [signum - 1].gotsig = 1;
431		730
432	if (!gotsig)	731	if (!gotsig)
433	{	732	{
434	int old_errno = errno;	733	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	736	errno = old_errno;
438	}	737	}
439	}	738	}
440		739
		740	void noinline
		741	ev_feed_signal_event (EV_P_ int signum)
		742	{
		743	WL w;
		744
		745	#if EV_MULTIPLICITY
		746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		747	#endif
		748
		749	--signum;
		750
		751	if (signum < 0 || signum >= signalmax)
		752	return;
		753
		754	signals [signum].gotsig = 0;
		755
		756	for (w = signals [signum].head; w; w = w->next)
		757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		758	}
		759
441	static void	760	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
443	{	762	{
444	struct ev_watcher_list *w;
445	int signum;	763	int signum;
446		764
447	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	766	gotsig = 0;
449		767
450	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
452	{	770	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;
454
455	for (w = signals [signum].head; w; w = w->next)
456	event (EV_A_ (W)w, EV_SIGNAL);
457	}
458	}	771	}
459		772
460	static void	773	void inline_speed
		774	fd_intern (int fd)
		775	{
		776	#ifdef _WIN32
		777	int arg = 1;
		778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		779	#else
		780	fcntl (fd, F_SETFD, FD_CLOEXEC);
		781	fcntl (fd, F_SETFL, O_NONBLOCK);
		782	#endif
		783	}
		784
		785	static void noinline
461	siginit (EV_P)	786	siginit (EV_P)
462	{	787	{
463	#ifndef WIN32	788	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	789	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		790
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	791	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	792	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	794	}
476		795
477	/*****************************************************************************/	796	/*****************************************************************************/
478		797
		798	static ev_child *childs [EV_PID_HASHSIZE];
		799
479	#ifndef WIN32	800	#ifndef _WIN32
		801
		802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
480		818
481	#ifndef WCONTINUED	819	#ifndef WCONTINUED
482	# define WCONTINUED 0	820	# define WCONTINUED 0
483	#endif	821	#endif
484		822
485	static void	823	static void
486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
487	{
488	struct ev_child *w;
489
490	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
491	if (w->pid == pid || !w->pid)
492	{
493	w->priority = sw->priority; /* need to do it *now* */
494	w->rpid = pid;
495	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);
497	}
498	}
499
500	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
502	{	825	{
503	int pid, status;	826	int pid, status;
504		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
507	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
508	event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		838
510	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512	}
513	}	842	}
514		843
515	#endif	844	#endif
516		845
517	/*****************************************************************************/	846	/*****************************************************************************/
518		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
519	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
520	# include "ev_kqueue.c"	852	# include "ev_kqueue.c"
521	#endif	853	#endif
522	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	855	# include "ev_epoll.c"
524	#endif	856	#endif
525	#if EV_USEV_POLL	857	#if EV_USE_POLL
526	# include "ev_poll.c"	858	# include "ev_poll.c"
527	#endif	859	#endif
528	#if EV_USE_SELECT	860	#if EV_USE_SELECT
529	# include "ev_select.c"	861	# include "ev_select.c"
530	#endif	862	#endif
…		…
540	{	872	{
541	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
542	}	874	}
543		875
544	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
545	static int	877	int inline_size
546	enable_secure (void)	878	enable_secure (void)
547	{	879	{
548	#ifdef WIN32	880	#ifdef _WIN32
549	return 0;	881	return 0;
550	#else	882	#else
551	return getuid () != geteuid ()	883	return getuid () != geteuid ()
552	|| getgid () != getegid ();	884	|| getgid () != getegid ();
553	#endif	885	#endif
554	}	886	}
555		887
556	int	888	unsigned int
557	ev_method (EV_P)	889	ev_supported_backends (void)
558	{	890	{
559	return method;	891	unsigned int flags = 0;
560	}
561		892
562	static void	893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563	loop_init (EV_P_ int methods)	894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
564	{	904	{
565	if (!method)	905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
		941	loop_init (EV_P_ unsigned int flags)
		942	{
		943	if (!backend)
566	{	944	{
567	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
568	{	946	{
569	struct timespec ts;	947	struct timespec ts;
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	949	have_monotonic = 1;
572	}	950	}
573	#endif	951	#endif
574		952
575	rt_now = ev_time ();	953	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	954	mn_now = get_clock ();
577	now_floor = mn_now;	955	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
579		957
580	if (methods == EVMETHOD_AUTO)	958	/* pid check not overridable via env */
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))	959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
		964	if (!(flags & EVFLAG_NOENV)
		965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else
584	methods = EVMETHOD_ANY;
585		968
586	method = 0;	969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
		978	#if EV_USE_PORT
		979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		980	#endif
587	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589	#endif	983	#endif
590	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592	#endif	986	#endif
593	#if EV_USEV_POLL	987	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595	#endif	989	#endif
596	#if EV_USE_SELECT	990	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598	#endif	992	#endif
599	}
600	}
601		993
602	void	994	ev_init (&sigev, sigcb);
		995	ev_set_priority (&sigev, EV_MAXPRI);
		996	}
		997	}
		998
		999	static void noinline
603	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
604	{	1001	{
		1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
		1012	#if EV_USE_PORT
		1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1014	#endif
605	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607	#endif	1017	#endif
608	#if EV_USE_EPOLL	1018	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610	#endif	1020	#endif
611	#if EV_USEV_POLL	1021	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613	#endif	1023	#endif
614	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616	#endif	1026	#endif
617		1027
618	method = 0;	1028	for (i = NUMPRI; i--; )
619	/*TODO*/	1029	{
620	}	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
621		1035
622	void	1036	/* have to use the microsoft-never-gets-it-right macro */
		1037	array_free (fdchange, EMPTY);
		1038	array_free (timer, EMPTY);
		1039	#if EV_PERIODIC_ENABLE
		1040	array_free (periodic, EMPTY);
		1041	#endif
		1042	array_free (prepare, EMPTY);
		1043	array_free (check, EMPTY);
		1044
		1045	backend = 0;
		1046	}
		1047
		1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
623	loop_fork (EV_P)	1051	loop_fork (EV_P)
624	{	1052	{
625	/*TODO*/	1053	#if EV_USE_PORT
		1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1055	#endif
		1056	#if EV_USE_KQUEUE
		1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1058	#endif
626	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628	#endif	1061	#endif
629	#if EV_USE_KQUEUE	1062	#if EV_USE_INOTIFY
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1063	infy_fork (EV_A);
631	#endif	1064	#endif
		1065
		1066	if (ev_is_active (&sigev))
		1067	{
		1068	/* default loop */
		1069
		1070	ev_ref (EV_A);
		1071	ev_io_stop (EV_A_ &sigev);
		1072	close (sigpipe [0]);
		1073	close (sigpipe [1]);
		1074
		1075	while (pipe (sigpipe))
		1076	syserr ("(libev) error creating pipe");
		1077
		1078	siginit (EV_A);
		1079	}
		1080
		1081	postfork = 0;
632	}	1082	}
633		1083
634	#if EV_MULTIPLICITY	1084	#if EV_MULTIPLICITY
635	struct ev_loop *	1085	struct ev_loop *
636	ev_loop_new (int methods)	1086	ev_loop_new (unsigned int flags)
637	{	1087	{
638	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639		1089
		1090	memset (loop, 0, sizeof (struct ev_loop));
		1091
640	loop_init (EV_A_ methods);	1092	loop_init (EV_A_ flags);
641		1093
642	if (ev_methods (EV_A))	1094	if (ev_backend (EV_A))
643	return loop;	1095	return loop;
644		1096
645	return 0;	1097	return 0;
646	}	1098	}
647		1099
648	void	1100	void
649	ev_loop_destroy (EV_P)	1101	ev_loop_destroy (EV_P)
650	{	1102	{
651	loop_destroy (EV_A);	1103	loop_destroy (EV_A);
652	free (loop);	1104	ev_free (loop);
653	}	1105	}
654		1106
655	void	1107	void
656	ev_loop_fork (EV_P)	1108	ev_loop_fork (EV_P)
657	{	1109	{
658	loop_fork (EV_A);	1110	postfork = 1;
659	}	1111	}
660		1112
661	#endif	1113	#endif
662		1114
663	#if EV_MULTIPLICITY	1115	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
668	#else	1118	#else
669	static int default_loop;
670
671	int	1119	int
		1120	ev_default_loop (unsigned int flags)
672	#endif	1121	#endif
673	ev_default_loop (int methods)
674	{	1122	{
675	if (sigpipe [0] == sigpipe [1])	1123	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	1124	if (pipe (sigpipe))
677	return 0;	1125	return 0;
678		1126
679	if (!default_loop)	1127	if (!ev_default_loop_ptr)
680	{	1128	{
681	#if EV_MULTIPLICITY	1129	#if EV_MULTIPLICITY
682	struct ev_loop *loop = default_loop = &default_loop_struct;	1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683	#else	1131	#else
684	default_loop = 1;	1132	ev_default_loop_ptr = 1;
685	#endif	1133	#endif
686		1134
687	loop_init (EV_A_ methods);	1135	loop_init (EV_A_ flags);
688		1136
689	if (ev_method (EV_A))	1137	if (ev_backend (EV_A))
690	{	1138	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	1139	siginit (EV_A);
694		1140
695	#ifndef WIN32	1141	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	1143	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	1144	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	1146	#endif
701	}	1147	}
702	else	1148	else
703	default_loop = 0;	1149	ev_default_loop_ptr = 0;
704	}	1150	}
705		1151
706	return default_loop;	1152	return ev_default_loop_ptr;
707	}	1153	}
708		1154
709	void	1155	void
710	ev_default_destroy (void)	1156	ev_default_destroy (void)
711	{	1157	{
		1158	#if EV_MULTIPLICITY
712	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
713		1161
		1162	#ifndef _WIN32
714	ev_ref (EV_A); /* child watcher */	1163	ev_ref (EV_A); /* child watcher */
715	ev_signal_stop (EV_A_ &childev);	1164	ev_signal_stop (EV_A_ &childev);
		1165	#endif
716		1166
717	ev_ref (EV_A); /* signal watcher */	1167	ev_ref (EV_A); /* signal watcher */
718	ev_io_stop (EV_A_ &sigev);	1168	ev_io_stop (EV_A_ &sigev);
719		1169
720	close (sigpipe [0]); sigpipe [0] = 0;	1170	close (sigpipe [0]); sigpipe [0] = 0;
…		…
722		1172
723	loop_destroy (EV_A);	1173	loop_destroy (EV_A);
724	}	1174	}
725		1175
726	void	1176	void
727	ev_default_fork (EV_P)	1177	ev_default_fork (void)
728	{	1178	{
729	loop_fork (EV_A);	1179	#if EV_MULTIPLICITY
		1180	struct ev_loop *loop = ev_default_loop_ptr;
		1181	#endif
730		1182
731	ev_io_stop (EV_A_ &sigev);	1183	if (backend)
732	close (sigpipe [0]);	1184	postfork = 1;
733	close (sigpipe [1]);
734	pipe (sigpipe);
735
736	ev_ref (EV_A); /* signal watcher */
737	siginit (EV_A);
738	}	1185	}
739		1186
740	/*****************************************************************************/	1187	/*****************************************************************************/
741		1188
742	static void	1189	void
		1190	ev_invoke (EV_P_ void *w, int revents)
		1191	{
		1192	EV_CB_INVOKE ((W)w, revents);
		1193	}
		1194
		1195	void inline_speed
743	call_pending (EV_P)	1196	call_pending (EV_P)
744	{	1197	{
745	int pri;	1198	int pri;
746		1199
747	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
748	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
749	{	1202	{
750	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
751		1204
752	if (p->w)	1205	if (expect_true (p->w))
753	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
754	p->w->pending = 0;	1209	p->w->pending = 0;
755	p->w->cb (EV_A_ p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
756	}	1211	}
757	}	1212	}
758	}	1213	}
759		1214
760	static void	1215	void inline_size
761	timers_reify (EV_P)	1216	timers_reify (EV_P)
762	{	1217	{
763	while (timercnt && timers [0]->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
764	{	1219	{
765	struct ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
		1221
		1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
766		1223
767	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
768	if (w->repeat)	1225	if (w->repeat)
769	{	1226	{
770	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1228
771	w->at = mn_now + w->repeat;	1229	((WT)w)->at += w->repeat;
		1230	if (((WT)w)->at < mn_now)
		1231	((WT)w)->at = mn_now;
		1232
772	downheap ((WT *)timers, timercnt, 0);	1233	downheap ((WT *)timers, timercnt, 0);
773	}	1234	}
774	else	1235	else
775	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
776		1237
777	event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
778	}	1239	}
779	}	1240	}
780		1241
781	static void	1242	#if EV_PERIODIC_ENABLE
		1243	void inline_size
782	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
783	{	1245	{
784	while (periodiccnt && periodics [0]->at <= rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
785	{	1247	{
786	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
		1249
		1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
787		1251
788	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
789	if (w->interval)	1253	if (w->reschedule_cb)
790	{	1254	{
		1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1257	downheap ((WT *)periodics, periodiccnt, 0);
		1258	}
		1259	else if (w->interval)
		1260	{
791	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
792	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
793	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
794	}	1265	}
795	else	1266	else
796	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
797		1268
798	event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
799	}	1270	}
800	}	1271	}
801		1272
802	static void	1273	static void noinline
803	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
804	{	1275	{
805	int i;	1276	int i;
806		1277
807	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
808	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
809	{	1280	{
810	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
811		1282
		1283	if (w->reschedule_cb)
		1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
812	if (w->interval)	1285	else if (w->interval)
		1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1287	}
		1288
		1289	/* now rebuild the heap */
		1290	for (i = periodiccnt >> 1; i--; )
		1291	downheap ((WT *)periodics, periodiccnt, i);
		1292	}
		1293	#endif
		1294
		1295	#if EV_IDLE_ENABLE
		1296	void inline_size
		1297	idle_reify (EV_P)
		1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
813	{	1304	{
814	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1305	if (pendingcnt [pri])
		1306	break;
815		1307
816	if (fabs (diff) >= 1e-4)	1308	if (idlecnt [pri])
817	{	1309	{
818	ev_periodic_stop (EV_A_ w);	1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
819	ev_periodic_start (EV_A_ w);	1311	break;
820
821	i = 0; /* restart loop, inefficient, but time jumps should be rare */
822	}	1312	}
823	}	1313	}
824	}	1314	}
825	}	1315	}
		1316	#endif
826		1317
827	inline int	1318	void inline_speed
828	time_update_monotonic (EV_P)	1319	time_update (EV_P_ ev_tstamp max_block)
829	{
830	mn_now = get_clock ();
831
832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
833	{
834	rt_now = rtmn_diff + mn_now;
835	return 0;
836	}
837	else
838	{
839	now_floor = mn_now;
840	rt_now = ev_time ();
841	return 1;
842	}
843	}
844
845	static void
846	time_update (EV_P)
847	{	1320	{
848	int i;	1321	int i;
849		1322
850	#if EV_USE_MONOTONIC	1323	#if EV_USE_MONOTONIC
851	if (expect_true (have_monotonic))	1324	if (expect_true (have_monotonic))
852	{	1325	{
853	if (time_update_monotonic (EV_A))	1326	ev_tstamp odiff = rtmn_diff;
		1327
		1328	mn_now = get_clock ();
		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
		1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
854	{	1333	{
855	ev_tstamp odiff = rtmn_diff;	1334	ev_rt_now = rtmn_diff + mn_now;
		1335	return;
		1336	}
856		1337
		1338	now_floor = mn_now;
		1339	ev_rt_now = ev_time ();
		1340
857	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1341	/* loop a few times, before making important decisions.
		1342	* on the choice of "4": one iteration isn't enough,
		1343	* in case we get preempted during the calls to
		1344	* ev_time and get_clock. a second call is almost guaranteed
		1345	* to succeed in that case, though. and looping a few more times
		1346	* doesn't hurt either as we only do this on time-jumps or
		1347	* in the unlikely event of having been preempted here.
		1348	*/
		1349	for (i = 4; --i; )
858	{	1350	{
859	rtmn_diff = rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
860		1352
861	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
862	return; /* all is well */	1354	return; /* all is well */
863		1355
864	rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
865	mn_now = get_clock ();	1357	mn_now = get_clock ();
866	now_floor = mn_now;	1358	now_floor = mn_now;
867	}	1359	}
868		1360
		1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
869	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
870	/* no timer adjustment, as the monotonic clock doesn't jump */	1376	#endif
871	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
		1378	for (i = 0; i < timercnt; ++i)
		1379	((WT)timers [i])->at += ev_rt_now - mn_now;
872	}	1380	}
873	}
874	else
875	#endif
876	{
877	rt_now = ev_time ();
878		1381
879	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
880	{
881	periodics_reschedule (EV_A);
882
883	/* adjust timers. this is easy, as the offset is the same for all */
884	for (i = 0; i < timercnt; ++i)
885	timers [i]->at += rt_now - mn_now;
886	}
887
888	mn_now = rt_now;	1382	mn_now = ev_rt_now;
889	}	1383	}
890	}	1384	}
891		1385
892	void	1386	void
893	ev_ref (EV_P)	1387	ev_ref (EV_P)
…		…
904	static int loop_done;	1398	static int loop_done;
905		1399
906	void	1400	void
907	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
908	{	1402	{
909	double block;
910	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 */
911		1408
912	do	1409	do
913	{	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
914	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
915	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
916	{	1432	{
917	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
918	call_pending (EV_A);	1434	call_pending (EV_A);
919	}	1435	}
920		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
921	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
922	fd_reify (EV_A);	1445	fd_reify (EV_A);
923		1446
924	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
925		1450
926	/* we only need this for !monotonic clockor timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
927	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
928	#if EV_USE_MONOTONIC
929	if (expect_true (have_monotonic))
930	time_update_monotonic (EV_A);
931	else	1453	else
932	#endif
933	{	1454	{
934	rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
935	mn_now = rt_now;	1456	time_update (EV_A_ 1e100);
936	}
937		1457
938	if (flags & EVLOOP_NONBLOCK || idlecnt)
939	block = 0.;
940	else
941	{
942	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
943		1459
944	if (timercnt)	1460	if (timercnt)
945	{	1461	{
946	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
947	if (block > to) block = to;	1463	if (block > to) block = to;
948	}	1464	}
949		1465
		1466	#if EV_PERIODIC_ENABLE
950	if (periodiccnt)	1467	if (periodiccnt)
951	{	1468	{
952	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
953	if (block > to) block = to;	1470	if (block > to) block = to;
954	}	1471	}
		1472	#endif
955		1473
956	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
957	}	1475	}
958		1476
		1477	++loop_count;
959	method_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
960		1479
961	/* update rt_now, do magic */	1480	/* update ev_rt_now, do magic */
962	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
963		1483
964	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
965	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
		1486	#if EV_PERIODIC_ENABLE
966	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
		1488	#endif
967		1489
		1490	#if EV_IDLE_ENABLE
968	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
969	if (!pendingcnt)	1492	idle_reify (EV_A);
970	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
971		1494
972	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
973	if (checkcnt)	1496	if (expect_false (checkcnt))
974	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
975		1498
976	call_pending (EV_A);	1499	call_pending (EV_A);
		1500
977	}	1501	}
978	while (activecnt && !loop_done);	1502	while (expect_true (activecnt && !loop_done));
979		1503
980	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
981	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
982	}	1506	}
983		1507
984	void	1508	void
985	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
986	{	1510	{
987	loop_done = how;	1511	loop_done = how;
988	}	1512	}
989		1513
990	/*****************************************************************************/	1514	/*****************************************************************************/
991		1515
992	inline void	1516	void inline_size
993	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
994	{	1518	{
995	elem->next = *head;	1519	elem->next = *head;
996	*head = elem;	1520	*head = elem;
997	}	1521	}
998		1522
999	inline void	1523	void inline_size
1000	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1001	{	1525	{
1002	while (*head)	1526	while (*head)
1003	{	1527	{
1004	if (*head == elem)	1528	if (*head == elem)
…		…
1009		1533
1010	head = &(*head)->next;	1534	head = &(*head)->next;
1011	}	1535	}
1012	}	1536	}
1013		1537
1014	inline void	1538	void inline_speed
1015	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1016	{	1540	{
1017	if (w->pending)	1541	if (w->pending)
1018	{	1542	{
1019	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1020	w->pending = 0;	1544	w->pending = 0;
1021	}	1545	}
1022	}	1546	}
1023		1547
1024	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1025	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1026	{	1576	{
1027	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1028	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1029
1030	w->active = active;	1578	w->active = active;
1031	ev_ref (EV_A);	1579	ev_ref (EV_A);
1032	}	1580	}
1033		1581
1034	inline void	1582	void inline_size
1035	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1036	{	1584	{
1037	ev_unref (EV_A);	1585	ev_unref (EV_A);
1038	w->active = 0;	1586	w->active = 0;
1039	}	1587	}
1040		1588
1041	/*****************************************************************************/	1589	/*****************************************************************************/
1042		1590
1043	void	1591	void noinline
1044	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1045	{	1593	{
1046	int fd = w->fd;	1594	int fd = w->fd;
1047		1595
1048	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
1049	return;	1597	return;
1050		1598
1051	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1052		1600
1053	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
1054	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1055	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1056		1604
1057	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd);
1058	}	1606	}
1059		1607
1060	void	1608	void noinline
1061	ev_io_stop (EV_P_ struct ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
1062	{	1610	{
1063	ev_clear_pending (EV_A_ (W)w);	1611	clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1612	if (expect_false (!ev_is_active (w)))
1065	return;	1613	return;
		1614
		1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1066		1616
1067	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1068	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1069		1619
1070	fd_change (EV_A_ w->fd);	1620	fd_change (EV_A_ w->fd);
1071	}	1621	}
1072		1622
1073	void	1623	void noinline
1074	ev_timer_start (EV_P_ struct ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
1075	{	1625	{
1076	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1077	return;	1627	return;
1078		1628
1079	w->at += mn_now;	1629	((WT)w)->at += mn_now;
1080		1630
1081	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1082		1632
1083	ev_start (EV_A_ (W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
1084	array_needsize (timers, timermax, timercnt, );	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1085	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
1086	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
1087	}
1088		1637
1089	void	1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
1090	ev_timer_stop (EV_P_ struct ev_timer *w)	1642	ev_timer_stop (EV_P_ ev_timer *w)
1091	{	1643	{
1092	ev_clear_pending (EV_A_ (W)w);	1644	clear_pending (EV_A_ (W)w);
1093	if (!ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1094	return;	1646	return;
1095		1647
1096	if (w->active < timercnt--)	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1649
		1650	{
		1651	int active = ((W)w)->active;
		1652
		1653	if (expect_true (--active < --timercnt))
1097	{	1654	{
1098	timers [w->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
1099	downheap ((WT *)timers, timercnt, w->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
1100	}	1657	}
		1658	}
1101		1659
1102	w->at = w->repeat;	1660	((WT)w)->at -= mn_now;
1103		1661
1104	ev_stop (EV_A_ (W)w);	1662	ev_stop (EV_A_ (W)w);
1105	}	1663	}
1106		1664
1107	void	1665	void noinline
1108	ev_timer_again (EV_P_ struct ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
1109	{	1667	{
1110	if (ev_is_active (w))	1668	if (ev_is_active (w))
1111	{	1669	{
1112	if (w->repeat)	1670	if (w->repeat)
1113	{	1671	{
1114	w->at = mn_now + w->repeat;	1672	((WT)w)->at = mn_now + w->repeat;
1115	downheap ((WT *)timers, timercnt, w->active - 1);	1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1116	}	1674	}
1117	else	1675	else
1118	ev_timer_stop (EV_A_ w);	1676	ev_timer_stop (EV_A_ w);
1119	}	1677	}
1120	else if (w->repeat)	1678	else if (w->repeat)
		1679	{
		1680	w->at = w->repeat;
1121	ev_timer_start (EV_A_ w);	1681	ev_timer_start (EV_A_ w);
		1682	}
1122	}	1683	}
1123		1684
1124	void	1685	#if EV_PERIODIC_ENABLE
		1686	void noinline
1125	ev_periodic_start (EV_P_ struct ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
1126	{	1688	{
1127	if (ev_is_active (w))	1689	if (expect_false (ev_is_active (w)))
1128	return;	1690	return;
1129		1691
		1692	if (w->reschedule_cb)
		1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1694	else if (w->interval)
		1695	{
1130	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1131
1132	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
1133	if (w->interval)
1134	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
1135		1702
1136	ev_start (EV_A_ (W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
1137	array_needsize (periodics, periodicmax, periodiccnt, );	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1138	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
1139	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
1140	}
1141		1707
1142	void	1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
1143	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1712	ev_periodic_stop (EV_P_ ev_periodic *w)
1144	{	1713	{
1145	ev_clear_pending (EV_A_ (W)w);	1714	clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))	1715	if (expect_false (!ev_is_active (w)))
1147	return;	1716	return;
1148		1717
1149	if (w->active < periodiccnt--)	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722
		1723	if (expect_true (--active < --periodiccnt))
1150	{	1724	{
1151	periodics [w->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
1152	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
1153	}	1727	}
		1728	}
1154		1729
1155	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1156	}	1731	}
1157		1732
1158	void	1733	void noinline
1159	ev_idle_start (EV_P_ struct ev_idle *w)	1734	ev_periodic_again (EV_P_ ev_periodic *w)
1160	{	1735	{
1161	if (ev_is_active (w))	1736	/* TODO: use adjustheap and recalculation */
1162	return;
1163
1164	ev_start (EV_A_ (W)w, ++idlecnt);
1165	array_needsize (idles, idlemax, idlecnt, );
1166	idles [idlecnt - 1] = w;
1167	}
1168
1169	void
1170	ev_idle_stop (EV_P_ struct ev_idle *w)
1171	{
1172	ev_clear_pending (EV_A_ (W)w);
1173	if (ev_is_active (w))
1174	return;
1175
1176	idles [w->active - 1] = idles [--idlecnt];
1177	ev_stop (EV_A_ (W)w);	1737	ev_periodic_stop (EV_A_ w);
		1738	ev_periodic_start (EV_A_ w);
1178	}	1739	}
1179		1740	#endif
1180	void
1181	ev_prepare_start (EV_P_ struct ev_prepare *w)
1182	{
1183	if (ev_is_active (w))
1184	return;
1185
1186	ev_start (EV_A_ (W)w, ++preparecnt);
1187	array_needsize (prepares, preparemax, preparecnt, );
1188	prepares [preparecnt - 1] = w;
1189	}
1190
1191	void
1192	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1193	{
1194	ev_clear_pending (EV_A_ (W)w);
1195	if (ev_is_active (w))
1196	return;
1197
1198	prepares [w->active - 1] = prepares [--preparecnt];
1199	ev_stop (EV_A_ (W)w);
1200	}
1201
1202	void
1203	ev_check_start (EV_P_ struct ev_check *w)
1204	{
1205	if (ev_is_active (w))
1206	return;
1207
1208	ev_start (EV_A_ (W)w, ++checkcnt);
1209	array_needsize (checks, checkmax, checkcnt, );
1210	checks [checkcnt - 1] = w;
1211	}
1212
1213	void
1214	ev_check_stop (EV_P_ struct ev_check *w)
1215	{
1216	ev_clear_pending (EV_A_ (W)w);
1217	if (ev_is_active (w))
1218	return;
1219
1220	checks [w->active - 1] = checks [--checkcnt];
1221	ev_stop (EV_A_ (W)w);
1222	}
1223		1741
1224	#ifndef SA_RESTART	1742	#ifndef SA_RESTART
1225	# define SA_RESTART 0	1743	# define SA_RESTART 0
1226	#endif	1744	#endif
1227		1745
1228	void	1746	void noinline
1229	ev_signal_start (EV_P_ struct ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
1230	{	1748	{
1231	#if EV_MULTIPLICITY	1749	#if EV_MULTIPLICITY
1232	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1233	#endif	1751	#endif
1234	if (ev_is_active (w))	1752	if (expect_false (ev_is_active (w)))
1235	return;	1753	return;
1236		1754
1237	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1238		1756
		1757	{
		1758	#ifndef _WIN32
		1759	sigset_t full, prev;
		1760	sigfillset (&full);
		1761	sigprocmask (SIG_SETMASK, &full, &prev);
		1762	#endif
		1763
		1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1765
		1766	#ifndef _WIN32
		1767	sigprocmask (SIG_SETMASK, &prev, 0);
		1768	#endif
		1769	}
		1770
1239	ev_start (EV_A_ (W)w, 1);	1771	ev_start (EV_A_ (W)w, 1);
1240	array_needsize (signals, signalmax, w->signum, signals_init);
1241	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1242		1773
1243	if (!w->next)	1774	if (!((WL)w)->next)
1244	{	1775	{
		1776	#if _WIN32
		1777	signal (w->signum, sighandler);
		1778	#else
1245	struct sigaction sa;	1779	struct sigaction sa;
1246	sa.sa_handler = sighandler;	1780	sa.sa_handler = sighandler;
1247	sigfillset (&sa.sa_mask);	1781	sigfillset (&sa.sa_mask);
1248	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1249	sigaction (w->signum, &sa, 0);	1783	sigaction (w->signum, &sa, 0);
		1784	#endif
1250	}	1785	}
1251	}	1786	}
1252		1787
1253	void	1788	void noinline
1254	ev_signal_stop (EV_P_ struct ev_signal *w)	1789	ev_signal_stop (EV_P_ ev_signal *w)
1255	{	1790	{
1256	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1257	if (!ev_is_active (w))	1792	if (expect_false (!ev_is_active (w)))
1258	return;	1793	return;
1259		1794
1260	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1261	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
1262		1797
1263	if (!signals [w->signum - 1].head)	1798	if (!signals [w->signum - 1].head)
1264	signal (w->signum, SIG_DFL);	1799	signal (w->signum, SIG_DFL);
1265	}	1800	}
1266		1801
1267	void	1802	void
1268	ev_child_start (EV_P_ struct ev_child *w)	1803	ev_child_start (EV_P_ ev_child *w)
1269	{	1804	{
1270	#if EV_MULTIPLICITY	1805	#if EV_MULTIPLICITY
1271	assert (("child watchers are only supported in the default loop", loop == default_loop));	1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1272	#endif	1807	#endif
1273	if (ev_is_active (w))	1808	if (expect_false (ev_is_active (w)))
1274	return;	1809	return;
1275		1810
1276	ev_start (EV_A_ (W)w, 1);	1811	ev_start (EV_A_ (W)w, 1);
1277	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1278	}	1813	}
1279		1814
1280	void	1815	void
1281	ev_child_stop (EV_P_ struct ev_child *w)	1816	ev_child_stop (EV_P_ ev_child *w)
1282	{	1817	{
1283	ev_clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1284	if (ev_is_active (w))	1819	if (expect_false (!ev_is_active (w)))
1285	return;	1820	return;
1286		1821
1287	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1288	ev_stop (EV_A_ (W)w);	1823	ev_stop (EV_A_ (W)w);
1289	}	1824	}
1290		1825
		1826	#if EV_STAT_ENABLE
		1827
		1828	# ifdef _WIN32
		1829	# undef lstat
		1830	# define lstat(a,b) _stati64 (a,b)
		1831	# endif
		1832
		1833	#define DEF_STAT_INTERVAL 5.0074891
		1834	#define MIN_STAT_INTERVAL 0.1074891
		1835
		1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1837
		1838	#if EV_USE_INOTIFY
		1839	# define EV_INOTIFY_BUFSIZE 8192
		1840
		1841	static void noinline
		1842	infy_add (EV_P_ ev_stat *w)
		1843	{
		1844	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);
		1845
		1846	if (w->wd < 0)
		1847	{
		1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1849
		1850	/* monitor some parent directory for speedup hints */
		1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1852	{
		1853	char path [4096];
		1854	strcpy (path, w->path);
		1855
		1856	do
		1857	{
		1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1860
		1861	char *pend = strrchr (path, '/');
		1862
		1863	if (!pend)
		1864	break; /* whoops, no '/', complain to your admin */
		1865
		1866	*pend = 0;
		1867	w->wd = inotify_add_watch (fs_fd, path, mask);
		1868	}
		1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1870	}
		1871	}
		1872	else
		1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1874
		1875	if (w->wd >= 0)
		1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1877	}
		1878
		1879	static void noinline
		1880	infy_del (EV_P_ ev_stat *w)
		1881	{
		1882	int slot;
		1883	int wd = w->wd;
		1884
		1885	if (wd < 0)
		1886	return;
		1887
		1888	w->wd = -2;
		1889	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1890	wlist_del (&fs_hash [slot].head, (WL)w);
		1891
		1892	/* remove this watcher, if others are watching it, they will rearm */
		1893	inotify_rm_watch (fs_fd, wd);
		1894	}
		1895
		1896	static void noinline
		1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1898	{
		1899	if (slot < 0)
		1900	/* overflow, need to check for all hahs slots */
		1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1902	infy_wd (EV_A_ slot, wd, ev);
		1903	else
		1904	{
		1905	WL w_;
		1906
		1907	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1908	{
		1909	ev_stat *w = (ev_stat *)w_;
		1910	w_ = w_->next; /* lets us remove this watcher and all before it */
		1911
		1912	if (w->wd == wd || wd == -1)
		1913	{
		1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1915	{
		1916	w->wd = -1;
		1917	infy_add (EV_A_ w); /* re-add, no matter what */
		1918	}
		1919
		1920	stat_timer_cb (EV_A_ &w->timer, 0);
		1921	}
		1922	}
		1923	}
		1924	}
		1925
		1926	static void
		1927	infy_cb (EV_P_ ev_io *w, int revents)
		1928	{
		1929	char buf [EV_INOTIFY_BUFSIZE];
		1930	struct inotify_event *ev = (struct inotify_event *)buf;
		1931	int ofs;
		1932	int len = read (fs_fd, buf, sizeof (buf));
		1933
		1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1936	}
		1937
		1938	void inline_size
		1939	infy_init (EV_P)
		1940	{
		1941	if (fs_fd != -2)
		1942	return;
		1943
		1944	fs_fd = inotify_init ();
		1945
		1946	if (fs_fd >= 0)
		1947	{
		1948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1949	ev_set_priority (&fs_w, EV_MAXPRI);
		1950	ev_io_start (EV_A_ &fs_w);
		1951	}
		1952	}
		1953
		1954	void inline_size
		1955	infy_fork (EV_P)
		1956	{
		1957	int slot;
		1958
		1959	if (fs_fd < 0)
		1960	return;
		1961
		1962	close (fs_fd);
		1963	fs_fd = inotify_init ();
		1964
		1965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1966	{
		1967	WL w_ = fs_hash [slot].head;
		1968	fs_hash [slot].head = 0;
		1969
		1970	while (w_)
		1971	{
		1972	ev_stat *w = (ev_stat *)w_;
		1973	w_ = w_->next; /* lets us add this watcher */
		1974
		1975	w->wd = -1;
		1976
		1977	if (fs_fd >= 0)
		1978	infy_add (EV_A_ w); /* re-add, no matter what */
		1979	else
		1980	ev_timer_start (EV_A_ &w->timer);
		1981	}
		1982
		1983	}
		1984	}
		1985
		1986	#endif
		1987
		1988	void
		1989	ev_stat_stat (EV_P_ ev_stat *w)
		1990	{
		1991	if (lstat (w->path, &w->attr) < 0)
		1992	w->attr.st_nlink = 0;
		1993	else if (!w->attr.st_nlink)
		1994	w->attr.st_nlink = 1;
		1995	}
		1996
		1997	static void noinline
		1998	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1999	{
		2000	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2001
		2002	/* we copy this here each the time so that */
		2003	/* prev has the old value when the callback gets invoked */
		2004	w->prev = w->attr;
		2005	ev_stat_stat (EV_A_ w);
		2006
		2007	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2008	if (
		2009	w->prev.st_dev != w->attr.st_dev
		2010	|| w->prev.st_ino != w->attr.st_ino
		2011	|| w->prev.st_mode != w->attr.st_mode
		2012	|| w->prev.st_nlink != w->attr.st_nlink
		2013	|| w->prev.st_uid != w->attr.st_uid
		2014	|| w->prev.st_gid != w->attr.st_gid
		2015	|| w->prev.st_rdev != w->attr.st_rdev
		2016	|| w->prev.st_size != w->attr.st_size
		2017	|| w->prev.st_atime != w->attr.st_atime
		2018	|| w->prev.st_mtime != w->attr.st_mtime
		2019	|| w->prev.st_ctime != w->attr.st_ctime
		2020	) {
		2021	#if EV_USE_INOTIFY
		2022	infy_del (EV_A_ w);
		2023	infy_add (EV_A_ w);
		2024	ev_stat_stat (EV_A_ w); /* avoid race... */
		2025	#endif
		2026
		2027	ev_feed_event (EV_A_ w, EV_STAT);
		2028	}
		2029	}
		2030
		2031	void
		2032	ev_stat_start (EV_P_ ev_stat *w)
		2033	{
		2034	if (expect_false (ev_is_active (w)))
		2035	return;
		2036
		2037	/* since we use memcmp, we need to clear any padding data etc. */
		2038	memset (&w->prev, 0, sizeof (ev_statdata));
		2039	memset (&w->attr, 0, sizeof (ev_statdata));
		2040
		2041	ev_stat_stat (EV_A_ w);
		2042
		2043	if (w->interval < MIN_STAT_INTERVAL)
		2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2045
		2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2047	ev_set_priority (&w->timer, ev_priority (w));
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_init (EV_A);
		2051
		2052	if (fs_fd >= 0)
		2053	infy_add (EV_A_ w);
		2054	else
		2055	#endif
		2056	ev_timer_start (EV_A_ &w->timer);
		2057
		2058	ev_start (EV_A_ (W)w, 1);
		2059	}
		2060
		2061	void
		2062	ev_stat_stop (EV_P_ ev_stat *w)
		2063	{
		2064	clear_pending (EV_A_ (W)w);
		2065	if (expect_false (!ev_is_active (w)))
		2066	return;
		2067
		2068	#if EV_USE_INOTIFY
		2069	infy_del (EV_A_ w);
		2070	#endif
		2071	ev_timer_stop (EV_A_ &w->timer);
		2072
		2073	ev_stop (EV_A_ (W)w);
		2074	}
		2075	#endif
		2076
		2077	#if EV_IDLE_ENABLE
		2078	void
		2079	ev_idle_start (EV_P_ ev_idle *w)
		2080	{
		2081	if (expect_false (ev_is_active (w)))
		2082	return;
		2083
		2084	pri_adjust (EV_A_ (W)w);
		2085
		2086	{
		2087	int active = ++idlecnt [ABSPRI (w)];
		2088
		2089	++idleall;
		2090	ev_start (EV_A_ (W)w, active);
		2091
		2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2093	idles [ABSPRI (w)][active - 1] = w;
		2094	}
		2095	}
		2096
		2097	void
		2098	ev_idle_stop (EV_P_ ev_idle *w)
		2099	{
		2100	clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	{
		2105	int active = ((W)w)->active;
		2106
		2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2108	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2109
		2110	ev_stop (EV_A_ (W)w);
		2111	--idleall;
		2112	}
		2113	}
		2114	#endif
		2115
		2116	void
		2117	ev_prepare_start (EV_P_ ev_prepare *w)
		2118	{
		2119	if (expect_false (ev_is_active (w)))
		2120	return;
		2121
		2122	ev_start (EV_A_ (W)w, ++preparecnt);
		2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2124	prepares [preparecnt - 1] = w;
		2125	}
		2126
		2127	void
		2128	ev_prepare_stop (EV_P_ ev_prepare *w)
		2129	{
		2130	clear_pending (EV_A_ (W)w);
		2131	if (expect_false (!ev_is_active (w)))
		2132	return;
		2133
		2134	{
		2135	int active = ((W)w)->active;
		2136	prepares [active - 1] = prepares [--preparecnt];
		2137	((W)prepares [active - 1])->active = active;
		2138	}
		2139
		2140	ev_stop (EV_A_ (W)w);
		2141	}
		2142
		2143	void
		2144	ev_check_start (EV_P_ ev_check *w)
		2145	{
		2146	if (expect_false (ev_is_active (w)))
		2147	return;
		2148
		2149	ev_start (EV_A_ (W)w, ++checkcnt);
		2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2151	checks [checkcnt - 1] = w;
		2152	}
		2153
		2154	void
		2155	ev_check_stop (EV_P_ ev_check *w)
		2156	{
		2157	clear_pending (EV_A_ (W)w);
		2158	if (expect_false (!ev_is_active (w)))
		2159	return;
		2160
		2161	{
		2162	int active = ((W)w)->active;
		2163	checks [active - 1] = checks [--checkcnt];
		2164	((W)checks [active - 1])->active = active;
		2165	}
		2166
		2167	ev_stop (EV_A_ (W)w);
		2168	}
		2169
		2170	#if EV_EMBED_ENABLE
		2171	void noinline
		2172	ev_embed_sweep (EV_P_ ev_embed *w)
		2173	{
		2174	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2175	}
		2176
		2177	static void
		2178	embed_cb (EV_P_ ev_io *io, int revents)
		2179	{
		2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2181
		2182	if (ev_cb (w))
		2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2184	else
		2185	ev_embed_sweep (loop, w);
		2186	}
		2187
		2188	void
		2189	ev_embed_start (EV_P_ ev_embed *w)
		2190	{
		2191	if (expect_false (ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	struct ev_loop *loop = w->loop;
		2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2198	}
		2199
		2200	ev_set_priority (&w->io, ev_priority (w));
		2201	ev_io_start (EV_A_ &w->io);
		2202
		2203	ev_start (EV_A_ (W)w, 1);
		2204	}
		2205
		2206	void
		2207	ev_embed_stop (EV_P_ ev_embed *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	ev_io_stop (EV_A_ &w->io);
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	}
		2217	#endif
		2218
		2219	#if EV_FORK_ENABLE
		2220	void
		2221	ev_fork_start (EV_P_ ev_fork *w)
		2222	{
		2223	if (expect_false (ev_is_active (w)))
		2224	return;
		2225
		2226	ev_start (EV_A_ (W)w, ++forkcnt);
		2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2228	forks [forkcnt - 1] = w;
		2229	}
		2230
		2231	void
		2232	ev_fork_stop (EV_P_ ev_fork *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	{
		2239	int active = ((W)w)->active;
		2240	forks [active - 1] = forks [--forkcnt];
		2241	((W)forks [active - 1])->active = active;
		2242	}
		2243
		2244	ev_stop (EV_A_ (W)w);
		2245	}
		2246	#endif
		2247
1291	/*****************************************************************************/	2248	/*****************************************************************************/
1292		2249
1293	struct ev_once	2250	struct ev_once
1294	{	2251	{
1295	struct ev_io io;	2252	ev_io io;
1296	struct ev_timer to;	2253	ev_timer to;
1297	void (*cb)(int revents, void *arg);	2254	void (*cb)(int revents, void *arg);
1298	void *arg;	2255	void *arg;
1299	};	2256	};
1300		2257
1301	static void	2258	static void
…		…
1304	void (*cb)(int revents, void *arg) = once->cb;	2261	void (*cb)(int revents, void *arg) = once->cb;
1305	void *arg = once->arg;	2262	void *arg = once->arg;
1306		2263
1307	ev_io_stop (EV_A_ &once->io);	2264	ev_io_stop (EV_A_ &once->io);
1308	ev_timer_stop (EV_A_ &once->to);	2265	ev_timer_stop (EV_A_ &once->to);
1309	free (once);	2266	ev_free (once);
1310		2267
1311	cb (revents, arg);	2268	cb (revents, arg);
1312	}	2269	}
1313		2270
1314	static void	2271	static void
1315	once_cb_io (EV_P_ struct ev_io *w, int revents)	2272	once_cb_io (EV_P_ ev_io *w, int revents)
1316	{	2273	{
1317	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1318	}	2275	}
1319		2276
1320	static void	2277	static void
1321	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2278	once_cb_to (EV_P_ ev_timer *w, int revents)
1322	{	2279	{
1323	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2280	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1324	}	2281	}
1325		2282
1326	void	2283	void
1327	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2284	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1328	{	2285	{
1329	struct ev_once *once = malloc (sizeof (struct ev_once));	2286	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1330		2287
1331	if (!once)	2288	if (expect_false (!once))
		2289	{
1332	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2290	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1333	else	2291	return;
1334	{	2292	}
		2293
1335	once->cb = cb;	2294	once->cb = cb;
1336	once->arg = arg;	2295	once->arg = arg;
1337		2296
1338	ev_watcher_init (&once->io, once_cb_io);	2297	ev_init (&once->io, once_cb_io);
1339	if (fd >= 0)	2298	if (fd >= 0)
1340	{	2299	{
1341	ev_io_set (&once->io, fd, events);	2300	ev_io_set (&once->io, fd, events);
1342	ev_io_start (EV_A_ &once->io);	2301	ev_io_start (EV_A_ &once->io);
1343	}	2302	}
1344		2303
1345	ev_watcher_init (&once->to, once_cb_to);	2304	ev_init (&once->to, once_cb_to);
1346	if (timeout >= 0.)	2305	if (timeout >= 0.)
1347	{	2306	{
1348	ev_timer_set (&once->to, timeout, 0.);	2307	ev_timer_set (&once->to, timeout, 0.);
1349	ev_timer_start (EV_A_ &once->to);	2308	ev_timer_start (EV_A_ &once->to);
1350	}
1351	}	2309	}
1352	}	2310	}
1353		2311
		2312	#ifdef __cplusplus
		2313	}
		2314	#endif
		2315

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