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Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.195 by root, Sat Dec 22 11:44:51 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_NANOSLEEP
		60	# if HAVE_NANOSLEEP
		61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		69	# define EV_USE_SELECT 1
		70	# else
		71	# define EV_USE_SELECT 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
		77	# define EV_USE_POLL 1
		78	# else
		79	# define EV_USE_POLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_EPOLL
		84	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		85	# define EV_USE_EPOLL 1
		86	# else
		87	# define EV_USE_EPOLL 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_KQUEUE
		92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		93	# define EV_USE_KQUEUE 1
		94	# else
		95	# define EV_USE_KQUEUE 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_PORT
		100	# if HAVE_PORT_H && HAVE_PORT_CREATE
		101	# define EV_USE_PORT 1
		102	# else
		103	# define EV_USE_PORT 0
		104	# endif
		105	# endif
		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
		113	# endif
		114
33	#endif	115	#endif
34		116
35	#include <math.h>	117	#include <math.h>
36	#include <stdlib.h>	118	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	119	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	120	#include <stddef.h>
41		121
42	#include <stdio.h>	122	#include <stdio.h>
43		123
44	#include <assert.h>	124	#include <assert.h>
45	#include <errno.h>	125	#include <errno.h>
46	#include <sys/types.h>	126	#include <sys/types.h>
		127	#include <time.h>
		128
		129	#include <signal.h>
		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
		136
47	#ifndef WIN32	137	#ifndef _WIN32
		138	# include <sys/time.h>
48	# include <sys/wait.h>	139	# include <sys/wait.h>
		140	# include <unistd.h>
		141	#else
		142	# define WIN32_LEAN_AND_MEAN
		143	# include <windows.h>
		144	# ifndef EV_SELECT_IS_WINSOCKET
		145	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	146	# endif
50	#include <sys/time.h>	147	#endif
51	#include <time.h>
52		148
53	/**/	149	/**/
54		150
55	#ifndef EV_USE_MONOTONIC	151	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	152	# define EV_USE_MONOTONIC 0
		153	#endif
		154
		155	#ifndef EV_USE_REALTIME
		156	# define EV_USE_REALTIME 0
		157	#endif
		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
57	#endif	161	#endif
58		162
59	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
61	#endif	165	#endif
62		166
63	#ifndef EV_USEV_POLL	167	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	168	# ifdef _WIN32
		169	# define EV_USE_POLL 0
		170	# else
		171	# define EV_USE_POLL 1
		172	# endif
65	#endif	173	#endif
66		174
67	#ifndef EV_USE_EPOLL	175	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	176	# define EV_USE_EPOLL 0
69	#endif	177	#endif
70		178
71	#ifndef EV_USE_KQUEUE	179	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	180	# define EV_USE_KQUEUE 0
73	#endif	181	#endif
74		182
75	#ifndef EV_USE_REALTIME	183	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	184	# define EV_USE_PORT 0
		185	#endif
		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
		194	# else
		195	# define EV_PID_HASHSIZE 16
		196	# endif
		197	#endif
		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
77	#endif	205	#endif
78		206
79	/**/	207	/**/
80		208
81	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
89	#endif	217	#endif
90		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
		234	#if EV_SELECT_IS_WINSOCKET
		235	# include <winsock.h>
		236	#endif
		237
91	/**/	238	/**/
92		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#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) */	251	#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 */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97		253
98	#include "ev.h"
99
100	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
101	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	256	# define noinline __attribute__ ((noinline))
103	#else	257	#else
104	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
105	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
106	#endif	263	#endif
107		264
108	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
110		274
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		277
		278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
		280
114	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
117		284
		285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		288
		289	#ifdef _WIN32
		290	# include "ev_win32.c"
		291	#endif
119		292
120	/*****************************************************************************/	293	/*****************************************************************************/
121		294
		295	static void (*syserr_cb)(const char *msg);
		296
		297	void
		298	ev_set_syserr_cb (void (*cb)(const char *msg))
		299	{
		300	syserr_cb = cb;
		301	}
		302
		303	static void noinline
		304	syserr (const char *msg)
		305	{
		306	if (!msg)
		307	msg = "(libev) system error";
		308
		309	if (syserr_cb)
		310	syserr_cb (msg);
		311	else
		312	{
		313	perror (msg);
		314	abort ();
		315	}
		316	}
		317
		318	static void *(*alloc)(void *ptr, long size);
		319
		320	void
		321	ev_set_allocator (void *(*cb)(void *ptr, long size))
		322	{
		323	alloc = cb;
		324	}
		325
		326	inline_speed void *
		327	ev_realloc (void *ptr, long size)
		328	{
		329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		330
		331	if (!ptr && size)
		332	{
		333	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		334	abort ();
		335	}
		336
		337	return ptr;
		338	}
		339
		340	#define ev_malloc(size) ev_realloc (0, (size))
		341	#define ev_free(ptr) ev_realloc ((ptr), 0)
		342
		343	/*****************************************************************************/
		344
122	typedef struct	345	typedef struct
123	{	346	{
124	struct ev_watcher_list *head;	347	WL head;
125	unsigned char events;	348	unsigned char events;
126	unsigned char reify;	349	unsigned char reify;
		350	#if EV_SELECT_IS_WINSOCKET
		351	SOCKET handle;
		352	#endif
127	} ANFD;	353	} ANFD;
128		354
129	typedef struct	355	typedef struct
130	{	356	{
131	W w;	357	W w;
132	int events;	358	int events;
133	} ANPENDING;	359	} ANPENDING;
134		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
		367
135	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
136		369
137	struct ev_loop	370	struct ev_loop
138	{	371	{
		372	ev_tstamp ev_rt_now;
		373	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	374	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	375	#include "ev_vars.h"
141	};
142	# undef VAR	376	#undef VAR
		377	};
143	# include "ev_wrap.h"	378	#include "ev_wrap.h"
		379
		380	static struct ev_loop default_loop_struct;
		381	struct ev_loop *ev_default_loop_ptr;
144		382
145	#else	383	#else
146		384
		385	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	386	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	387	#include "ev_vars.h"
149	# undef VAR	388	#undef VAR
		389
		390	static int ev_default_loop_ptr;
150		391
151	#endif	392	#endif
152		393
153	/*****************************************************************************/	394	/*****************************************************************************/
154		395
155	inline ev_tstamp	396	ev_tstamp
156	ev_time (void)	397	ev_time (void)
157	{	398	{
158	#if EV_USE_REALTIME	399	#if EV_USE_REALTIME
159	struct timespec ts;	400	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	401	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	407	#endif
167	}	408	}
168		409
169	inline ev_tstamp	410	ev_tstamp inline_size
170	get_clock (void)	411	get_clock (void)
171	{	412	{
172	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
174	{	415	{
…		…
179	#endif	420	#endif
180		421
181	return ev_time ();	422	return ev_time ();
182	}	423	}
183		424
		425	#if EV_MULTIPLICITY
184	ev_tstamp	426	ev_tstamp
185	ev_now (EV_P)	427	ev_now (EV_P)
186	{	428	{
187	return rt_now;	429	return ev_rt_now;
188	}	430	}
		431	#endif
189		432
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	433	void
191		434	ev_sleep (ev_tstamp delay)
192	#define array_needsize(base,cur,cnt,init) \	435	{
193	if (expect_false ((cnt) > cur)) \	436	if (delay > 0.)
194	{ \
195	int newcnt = cur; \
196	do \
197	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \
199	} \
200	while ((cnt) > newcnt); \
201	\
202	base = realloc (base, sizeof (*base) * (newcnt)); \
203	init (base + cur, newcnt - cur); \
204	cur = newcnt; \
205	}	437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
206		457
207	/*****************************************************************************/	458	/*****************************************************************************/
208		459
209	static void	460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		474	ncur = ncur - sizeof (void *) * 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void *base, int *cur, int cnt)
		483	{
		484	*cur = array_nextsize (elem, *cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
		487
		488	#define array_needsize(type,base,cur,cnt,init) \
		489	if (expect_false ((cnt) > (cur))) \
		490	{ \
		491	int ocur_ = (cur); \
		492	(base) = (type *)array_realloc \
		493	(sizeof (type), (base), &(cur), (cnt)); \
		494	init ((base) + (ocur_), (cur) - ocur_); \
		495	}
		496
		497	#if 0
		498	#define array_slim(type,stem) \
		499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		500	{ \
		501	stem ## max = array_roundsize (stem ## cnt >> 1); \
		502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		504	}
		505	#endif
		506
		507	#define array_free(stem, idx) \
		508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		509
		510	/*****************************************************************************/
		511
		512	void noinline
		513	ev_feed_event (EV_P_ void *w, int revents)
		514	{
		515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
		517
		518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events |= revents;
		520	else
		521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
		525	pendings [pri][w_->pending - 1].events = revents;
		526	}
		527	}
		528
		529	void inline_speed
		530	queue_events (EV_P_ W *events, int eventcnt, int type)
		531	{
		532	int i;
		533
		534	for (i = 0; i < eventcnt; ++i)
		535	ev_feed_event (EV_A_ events [i], type);
		536	}
		537
		538	/*****************************************************************************/
		539
		540	void inline_size
210	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
211	{	542	{
212	while (count--)	543	while (count--)
213	{	544	{
214	base->head = 0;	545	base->head = 0;
…		…
217		548
218	++base;	549	++base;
219	}	550	}
220	}	551	}
221		552
222	static void	553	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)	554	fd_event (EV_P_ int fd, int revents)
248	{	555	{
249	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	557	ev_io *w;
251		558
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	559	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	560	{
254	int ev = w->events & events;	561	int ev = w->events & revents;
255		562
256	if (ev)	563	if (ev)
257	event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
258	}	565	}
259	}	566	}
260		567
261	/*****************************************************************************/	568	void
		569	ev_feed_fd_event (EV_P_ int fd, int revents)
		570	{
		571	if (fd >= 0 && fd < anfdmax)
		572	fd_event (EV_A_ fd, revents);
		573	}
262		574
263	static void	575	void inline_size
264	fd_reify (EV_P)	576	fd_reify (EV_P)
265	{	577	{
266	int i;	578	int i;
267		579
268	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
269	{	581	{
270	int fd = fdchanges [i];	582	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	584	ev_io *w;
273		585
274	int events = 0;	586	unsigned char events = 0;
275		587
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	588	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	589	events |= (unsigned char)w->events;
278		590
279	anfd->reify = 0;	591	#if EV_SELECT_IS_WINSOCKET
280		592	if (events)
281	if (anfd->events != events)
282	{	593	{
283	method_modify (EV_A_ fd, anfd->events, events);	594	unsigned long argp;
284	anfd->events = events;	595	anfd->handle = _get_osfhandle (fd);
		596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285	}	597	}
		598	#endif
		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
		604	anfd->reify = 0;
		605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
286	}	610	}
287		611
288	fdchangecnt = 0;	612	fdchangecnt = 0;
289	}	613	}
290		614
291	static void	615	void inline_size
292	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
293	{	617	{
294	if (anfds [fd].reify || fdchangecnt < 0)	618	unsigned char reify = anfds [fd].reify;
295	return;
296
297	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
298		620
		621	if (expect_true (!reify))
		622	{
299	++fdchangecnt;	623	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
302	}	627	}
303		628
304	static void	629	void inline_speed
305	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
306	{	631	{
307	struct ev_io *w;	632	ev_io *w;
308		633
309	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
310	{	635	{
311	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	637	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	638	}
		639	}
		640
		641	int inline_size
		642	fd_valid (int fd)
		643	{
		644	#ifdef _WIN32
		645	return _get_osfhandle (fd) != -1;
		646	#else
		647	return fcntl (fd, F_GETFD) != -1;
		648	#endif
314	}	649	}
315		650
316	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
317	static void	652	static void noinline
318	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
319	{	654	{
320	int fd;	655	int fd;
321		656
322	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	658	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
326	}	661	}
327		662
328	/* called on ENOMEM in select/poll to kill some fds and retry */	663	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	664	static void noinline
330	fd_enomem (EV_P)	665	fd_enomem (EV_P)
331	{	666	{
332	int fd = anfdmax;	667	int fd;
333		668
334	while (fd--)	669	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	670	if (anfds [fd].events)
336	{	671	{
337	close (fd);
338	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
339	return;	673	return;
340	}	674	}
341	}	675	}
342		676
		677	/* usually called after fork if backend needs to re-arm all fds from scratch */
		678	static void noinline
		679	fd_rearm_all (EV_P)
		680	{
		681	int fd;
		682
		683	for (fd = 0; fd < anfdmax; ++fd)
		684	if (anfds [fd].events)
		685	{
		686	anfds [fd].events = 0;
		687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
		688	}
		689	}
		690
343	/*****************************************************************************/	691	/*****************************************************************************/
344		692
345	static void	693	void inline_speed
346	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
347	{	695	{
348	WT w = heap [k];	696	WT w = heap [k];
349		697
350	while (k && heap [k >> 1]->at > w->at)	698	while (k)
351	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
352	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
353	heap [k]->active = k + 1;	706	((W)heap [k])->active = k + 1;
354	k >>= 1;	707	k = p;
355	}	708	}
356		709
357	heap [k] = w;	710	heap [k] = w;
358	heap [k]->active = k + 1;	711	((W)heap [k])->active = k + 1;
359
360	}	712	}
361		713
362	static void	714	void inline_speed
363	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
364	{	716	{
365	WT w = heap [k];	717	WT w = heap [k];
366		718
367	while (k < (N >> 1))	719	for (;;)
368	{	720	{
369	int j = k << 1;	721	int c = (k << 1) + 1;
370		722
371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
372	++j;
373
374	if (w->at <= heap [j]->at)
375	break;	724	break;
376		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
377	heap [k] = heap [j];	732	heap [k] = heap [c];
378	heap [k]->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
379	k = j;	735	k = c;
380	}	736	}
381		737
382	heap [k] = w;	738	heap [k] = w;
383	heap [k]->active = k + 1;	739	((W)heap [k])->active = k + 1;
		740	}
		741
		742	void inline_size
		743	adjustheap (WT *heap, int N, int k)
		744	{
		745	upheap (heap, k);
		746	downheap (heap, N, k);
384	}	747	}
385		748
386	/*****************************************************************************/	749	/*****************************************************************************/
387		750
388	typedef struct	751	typedef struct
389	{	752	{
390	struct ev_watcher_list *head;	753	WL head;
391	sig_atomic_t volatile gotsig;	754	sig_atomic_t volatile gotsig;
392	} ANSIG;	755	} ANSIG;
393		756
394	static ANSIG *signals;	757	static ANSIG *signals;
395	static int signalmax;	758	static int signalmax;
396		759
397	static int sigpipe [2];	760	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
		762	static ev_io sigev;
399		763
400	static void	764	void inline_size
401	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
402	{	766	{
403	while (count--)	767	while (count--)
404	{	768	{
405	base->head = 0;	769	base->head = 0;
…		…
410	}	774	}
411		775
412	static void	776	static void
413	sighandler (int signum)	777	sighandler (int signum)
414	{	778	{
		779	#if _WIN32
		780	signal (signum, sighandler);
		781	#endif
		782
415	signals [signum - 1].gotsig = 1;	783	signals [signum - 1].gotsig = 1;
416		784
417	if (!gotsig)	785	if (!gotsig)
418	{	786	{
419	int old_errno = errno;	787	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	790	errno = old_errno;
423	}	791	}
424	}	792	}
425		793
		794	void noinline
		795	ev_feed_signal_event (EV_P_ int signum)
		796	{
		797	WL w;
		798
		799	#if EV_MULTIPLICITY
		800	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		801	#endif
		802
		803	--signum;
		804
		805	if (signum < 0 || signum >= signalmax)
		806	return;
		807
		808	signals [signum].gotsig = 0;
		809
		810	for (w = signals [signum].head; w; w = w->next)
		811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		812	}
		813
426	static void	814	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
428	{	816	{
429	struct ev_watcher_list *w;
430	int signum;	817	int signum;
431		818
432	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	820	gotsig = 0;
434		821
435	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
437	{	824	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	825	}
444		826
445	static void	827	void inline_speed
		828	fd_intern (int fd)
		829	{
		830	#ifdef _WIN32
		831	int arg = 1;
		832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		833	#else
		834	fcntl (fd, F_SETFD, FD_CLOEXEC);
		835	fcntl (fd, F_SETFL, O_NONBLOCK);
		836	#endif
		837	}
		838
		839	static void noinline
446	siginit (EV_P)	840	siginit (EV_P)
447	{	841	{
448	#ifndef WIN32	842	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	843	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		844
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	845	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	846	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	848	}
461		849
462	/*****************************************************************************/	850	/*****************************************************************************/
463		851
		852	static WL childs [EV_PID_HASHSIZE];
		853
464	#ifndef WIN32	854	#ifndef _WIN32
		855
		856	static ev_signal childev;
		857
		858	void inline_speed
		859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		860	{
		861	ev_child *w;
		862
		863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		864	if (w->pid == pid || !w->pid)
		865	{
		866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		867	w->rpid = pid;
		868	w->rstatus = status;
		869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		870	}
		871	}
465		872
466	#ifndef WCONTINUED	873	#ifndef WCONTINUED
467	# define WCONTINUED 0	874	# define WCONTINUED 0
468	#endif	875	#endif
469		876
470	static void	877	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476	if (w->pid == pid || !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it *now* */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
487	{	879	{
488	int pid, status;	880	int pid, status;
489		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
492	/* make sure we are called again until all childs have been reaped */	889	/* make sure we are called again until all childs have been reaped */
		890	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		892
495	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}
498	}	896	}
499		897
500	#endif	898	#endif
501		899
502	/*****************************************************************************/	900	/*****************************************************************************/
503		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
504	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
506	#endif	907	#endif
507	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	909	# include "ev_epoll.c"
509	#endif	910	#endif
510	#if EV_USEV_POLL	911	#if EV_USE_POLL
511	# include "ev_poll.c"	912	# include "ev_poll.c"
512	#endif	913	#endif
513	#if EV_USE_SELECT	914	#if EV_USE_SELECT
514	# include "ev_select.c"	915	# include "ev_select.c"
515	#endif	916	#endif
…		…
525	{	926	{
526	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
527	}	928	}
528		929
529	/* return true if we are running with elevated privileges and should ignore env variables */	930	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	931	int inline_size
531	enable_secure (void)	932	enable_secure (void)
532	{	933	{
533	#ifdef WIN32	934	#ifdef _WIN32
534	return 0;	935	return 0;
535	#else	936	#else
536	return getuid () != geteuid ()	937	return getuid () != geteuid ()
537	|| getgid () != getegid ();	938	|| getgid () != getegid ();
538	#endif	939	#endif
539	}	940	}
540		941
541	int	942	unsigned int
542	ev_method (EV_P)	943	ev_supported_backends (void)
543	{	944	{
544	return method;	945	unsigned int flags = 0;
545	}
546		946
547	inline int	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	948	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		949	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		950	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		951	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		952
		953	return flags;
		954	}
		955
		956	unsigned int
		957	ev_recommended_backends (void)
549	{	958	{
550	if (!method)	959	unsigned int flags = ev_supported_backends ();
		960
		961	#ifndef __NetBSD__
		962	/* kqueue is borked on everything but netbsd apparently */
		963	/* it usually doesn't work correctly on anything but sockets and pipes */
		964	flags &= ~EVBACKEND_KQUEUE;
		965	#endif
		966	#ifdef __APPLE__
		967	// flags &= ~EVBACKEND_KQUEUE; for documentation
		968	flags &= ~EVBACKEND_POLL;
		969	#endif
		970
		971	return flags;
		972	}
		973
		974	unsigned int
		975	ev_embeddable_backends (void)
		976	{
		977	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		978	return EVBACKEND_KQUEUE
		979	| EVBACKEND_PORT;
		980	}
		981
		982	unsigned int
		983	ev_backend (EV_P)
		984	{
		985	return backend;
		986	}
		987
		988	unsigned int
		989	ev_loop_count (EV_P)
		990	{
		991	return loop_count;
		992	}
		993
		994	void
		995	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		996	{
		997	io_blocktime = interval;
		998	}
		999
		1000	void
		1001	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	timeout_blocktime = interval;
		1004	}
		1005
		1006	static void noinline
		1007	loop_init (EV_P_ unsigned int flags)
		1008	{
		1009	if (!backend)
551	{	1010	{
552	#if EV_USE_MONOTONIC	1011	#if EV_USE_MONOTONIC
553	{	1012	{
554	struct timespec ts;	1013	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1014	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	1015	have_monotonic = 1;
557	}	1016	}
558	#endif	1017	#endif
559		1018
560	rt_now = ev_time ();	1019	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	1020	mn_now = get_clock ();
562	now_floor = mn_now;	1021	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	1022	rtmn_diff = ev_rt_now - mn_now;
564		1023
565	if (pipe (sigpipe))	1024	io_blocktime = 0.;
566	return 0;	1025	timeout_blocktime = 0.;
567		1026
568	if (methods == EVMETHOD_AUTO)	1027	/* pid check not overridable via env */
569	if (!enable_secure () && getenv ("LIBmethodS"))	1028	#ifndef _WIN32
570	methods = atoi (getenv ("LIBmethodS"));	1029	if (flags & EVFLAG_FORKCHECK)
571	else	1030	curpid = getpid ();
572	methods = EVMETHOD_ANY;	1031	#endif
573		1032
574	method = 0;	1033	if (!(flags & EVFLAG_NOENV)
		1034	&& !enable_secure ()
		1035	&& getenv ("LIBEV_FLAGS"))
		1036	flags = atoi (getenv ("LIBEV_FLAGS"));
		1037
		1038	if (!(flags & 0x0000ffffUL))
		1039	flags |= ev_recommended_backends ();
		1040
		1041	backend = 0;
		1042	backend_fd = -1;
		1043	#if EV_USE_INOTIFY
		1044	fs_fd = -2;
		1045	#endif
		1046
		1047	#if EV_USE_PORT
		1048	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1049	#endif
575	#if EV_USE_KQUEUE	1050	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1051	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	1052	#endif
578	#if EV_USE_EPOLL	1053	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1054	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	1055	#endif
581	#if EV_USEV_POLL	1056	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1057	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	1058	#endif
584	#if EV_USE_SELECT	1059	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1060	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	1061	#endif
587		1062
588	if (method)	1063	ev_init (&sigev, sigcb);
		1064	ev_set_priority (&sigev, EV_MAXPRI);
		1065	}
		1066	}
		1067
		1068	static void noinline
		1069	loop_destroy (EV_P)
		1070	{
		1071	int i;
		1072
		1073	#if EV_USE_INOTIFY
		1074	if (fs_fd >= 0)
		1075	close (fs_fd);
		1076	#endif
		1077
		1078	if (backend_fd >= 0)
		1079	close (backend_fd);
		1080
		1081	#if EV_USE_PORT
		1082	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1083	#endif
		1084	#if EV_USE_KQUEUE
		1085	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1086	#endif
		1087	#if EV_USE_EPOLL
		1088	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1089	#endif
		1090	#if EV_USE_POLL
		1091	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1092	#endif
		1093	#if EV_USE_SELECT
		1094	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1095	#endif
		1096
		1097	for (i = NUMPRI; i--; )
		1098	{
		1099	array_free (pending, [i]);
		1100	#if EV_IDLE_ENABLE
		1101	array_free (idle, [i]);
		1102	#endif
		1103	}
		1104
		1105	ev_free (anfds); anfdmax = 0;
		1106
		1107	/* have to use the microsoft-never-gets-it-right macro */
		1108	array_free (fdchange, EMPTY);
		1109	array_free (timer, EMPTY);
		1110	#if EV_PERIODIC_ENABLE
		1111	array_free (periodic, EMPTY);
		1112	#endif
		1113	#if EV_FORK_ENABLE
		1114	array_free (fork, EMPTY);
		1115	#endif
		1116	array_free (prepare, EMPTY);
		1117	array_free (check, EMPTY);
		1118
		1119	backend = 0;
		1120	}
		1121
		1122	void inline_size infy_fork (EV_P);
		1123
		1124	void inline_size
		1125	loop_fork (EV_P)
		1126	{
		1127	#if EV_USE_PORT
		1128	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1129	#endif
		1130	#if EV_USE_KQUEUE
		1131	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1132	#endif
		1133	#if EV_USE_EPOLL
		1134	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1135	#endif
		1136	#if EV_USE_INOTIFY
		1137	infy_fork (EV_A);
		1138	#endif
		1139
		1140	if (ev_is_active (&sigev))
		1141	{
		1142	/* default loop */
		1143
		1144	ev_ref (EV_A);
		1145	ev_io_stop (EV_A_ &sigev);
		1146	close (sigpipe [0]);
		1147	close (sigpipe [1]);
		1148
		1149	while (pipe (sigpipe))
		1150	syserr ("(libev) error creating pipe");
		1151
		1152	siginit (EV_A);
		1153	}
		1154
		1155	postfork = 0;
		1156	}
		1157
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *
		1160	ev_loop_new (unsigned int flags)
		1161	{
		1162	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1163
		1164	memset (loop, 0, sizeof (struct ev_loop));
		1165
		1166	loop_init (EV_A_ flags);
		1167
		1168	if (ev_backend (EV_A))
		1169	return loop;
		1170
		1171	return 0;
		1172	}
		1173
		1174	void
		1175	ev_loop_destroy (EV_P)
		1176	{
		1177	loop_destroy (EV_A);
		1178	ev_free (loop);
		1179	}
		1180
		1181	void
		1182	ev_loop_fork (EV_P)
		1183	{
		1184	postfork = 1;
		1185	}
		1186
		1187	#endif
		1188
		1189	#if EV_MULTIPLICITY
		1190	struct ev_loop *
		1191	ev_default_loop_init (unsigned int flags)
		1192	#else
		1193	int
		1194	ev_default_loop (unsigned int flags)
		1195	#endif
		1196	{
		1197	if (sigpipe [0] == sigpipe [1])
		1198	if (pipe (sigpipe))
		1199	return 0;
		1200
		1201	if (!ev_default_loop_ptr)
		1202	{
		1203	#if EV_MULTIPLICITY
		1204	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1205	#else
		1206	ev_default_loop_ptr = 1;
		1207	#endif
		1208
		1209	loop_init (EV_A_ flags);
		1210
		1211	if (ev_backend (EV_A))
589	{	1212	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1213	siginit (EV_A);
593		1214
594	#ifndef WIN32	1215	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1216	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1217	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1218	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1219	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1220	#endif
600	}	1221	}
		1222	else
		1223	ev_default_loop_ptr = 0;
601	}	1224	}
602		1225
603	return method;	1226	return ev_default_loop_ptr;
604	}	1227	}
605		1228
		1229	void
		1230	ev_default_destroy (void)
		1231	{
606	#if EV_MULTIPLICITY	1232	#if EV_MULTIPLICITY
607		1233	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613	if (loop_init (EV_A_ methods))
614	return loop;
615
616	ev_loop_delete (loop);
617
618	return 0;
619	}
620
621	void
622	ev_loop_delete (EV_P)
623	{
624	/*TODO*/
625	free (loop);
626	}
627
628	#else
629
630	int
631	ev_init (int methods)
632	{
633	return loop_init (methods);
634	}
635
636	#endif	1234	#endif
		1235
		1236	#ifndef _WIN32
		1237	ev_ref (EV_A); /* child watcher */
		1238	ev_signal_stop (EV_A_ &childev);
		1239	#endif
		1240
		1241	ev_ref (EV_A); /* signal watcher */
		1242	ev_io_stop (EV_A_ &sigev);
		1243
		1244	close (sigpipe [0]); sigpipe [0] = 0;
		1245	close (sigpipe [1]); sigpipe [1] = 0;
		1246
		1247	loop_destroy (EV_A);
		1248	}
		1249
		1250	void
		1251	ev_default_fork (void)
		1252	{
		1253	#if EV_MULTIPLICITY
		1254	struct ev_loop *loop = ev_default_loop_ptr;
		1255	#endif
		1256
		1257	if (backend)
		1258	postfork = 1;
		1259	}
637		1260
638	/*****************************************************************************/	1261	/*****************************************************************************/
639		1262
640	void	1263	void
641	ev_fork_prepare (void)	1264	ev_invoke (EV_P_ void *w, int revents)
642	{	1265	{
643	/* nop */	1266	EV_CB_INVOKE ((W)w, revents);
644	}	1267	}
645		1268
646	void	1269	void inline_speed
647	ev_fork_parent (void)
648	{
649	/* nop */
650	}
651
652	void
653	ev_fork_child (void)
654	{
655	/*TODO*/
656	#if !EV_MULTIPLICITY
657	#if EV_USE_EPOLL
658	if (method == EVMETHOD_EPOLL)
659	epoll_postfork_child (EV_A);
660	#endif
661
662	ev_io_stop (EV_A_ &sigev);
663	close (sigpipe [0]);
664	close (sigpipe [1]);
665	pipe (sigpipe);
666	siginit (EV_A);
667	#endif
668	}
669
670	/*****************************************************************************/
671
672	static void
673	call_pending (EV_P)	1270	call_pending (EV_P)
674	{	1271	{
675	int pri;	1272	int pri;
676		1273
677	for (pri = NUMPRI; pri--; )	1274	for (pri = NUMPRI; pri--; )
678	while (pendingcnt [pri])	1275	while (pendingcnt [pri])
679	{	1276	{
680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1277	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
681		1278
682	if (p->w)	1279	if (expect_true (p->w))
683	{	1280	{
		1281	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1282
684	p->w->pending = 0;	1283	p->w->pending = 0;
685	p->w->cb (EV_A_ p->w, p->events);	1284	EV_CB_INVOKE (p->w, p->events);
686	}	1285	}
687	}	1286	}
688	}	1287	}
689		1288
690	static void	1289	void inline_size
691	timers_reify (EV_P)	1290	timers_reify (EV_P)
692	{	1291	{
693	while (timercnt && timers [0]->at <= mn_now)	1292	while (timercnt && ((WT)timers [0])->at <= mn_now)
694	{	1293	{
695	struct ev_timer *w = timers [0];	1294	ev_timer *w = (ev_timer *)timers [0];
		1295
		1296	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
696		1297
697	/* first reschedule or stop timer */	1298	/* first reschedule or stop timer */
698	if (w->repeat)	1299	if (w->repeat)
699	{	1300	{
700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1301	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1302
701	w->at = mn_now + w->repeat;	1303	((WT)w)->at += w->repeat;
		1304	if (((WT)w)->at < mn_now)
		1305	((WT)w)->at = mn_now;
		1306
702	downheap ((WT *)timers, timercnt, 0);	1307	downheap (timers, timercnt, 0);
703	}	1308	}
704	else	1309	else
705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1310	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706		1311
707	event (EV_A_ (W)w, EV_TIMEOUT);	1312	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
708	}	1313	}
709	}	1314	}
710		1315
711	static void	1316	#if EV_PERIODIC_ENABLE
		1317	void inline_size
712	periodics_reify (EV_P)	1318	periodics_reify (EV_P)
713	{	1319	{
714	while (periodiccnt && periodics [0]->at <= rt_now)	1320	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
715	{	1321	{
716	struct ev_periodic *w = periodics [0];	1322	ev_periodic *w = (ev_periodic *)periodics [0];
		1323
		1324	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
717		1325
718	/* first reschedule or stop timer */	1326	/* first reschedule or stop timer */
719	if (w->interval)	1327	if (w->reschedule_cb)
720	{	1328	{
		1329	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1330	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1331	downheap (periodics, periodiccnt, 0);
		1332	}
		1333	else if (w->interval)
		1334	{
721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1335	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1336	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
722	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1337	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
723	downheap ((WT *)periodics, periodiccnt, 0);	1338	downheap (periodics, periodiccnt, 0);
724	}	1339	}
725	else	1340	else
726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1341	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727		1342
728	event (EV_A_ (W)w, EV_PERIODIC);	1343	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
729	}	1344	}
730	}	1345	}
731		1346
732	static void	1347	static void noinline
733	periodics_reschedule (EV_P)	1348	periodics_reschedule (EV_P)
734	{	1349	{
735	int i;	1350	int i;
736		1351
737	/* adjust periodics after time jump */	1352	/* adjust periodics after time jump */
738	for (i = 0; i < periodiccnt; ++i)	1353	for (i = 0; i < periodiccnt; ++i)
739	{	1354	{
740	struct ev_periodic *w = periodics [i];	1355	ev_periodic *w = (ev_periodic *)periodics [i];
741		1356
		1357	if (w->reschedule_cb)
		1358	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
742	if (w->interval)	1359	else if (w->interval)
		1360	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1361	}
		1362
		1363	/* now rebuild the heap */
		1364	for (i = periodiccnt >> 1; i--; )
		1365	downheap (periodics, periodiccnt, i);
		1366	}
		1367	#endif
		1368
		1369	#if EV_IDLE_ENABLE
		1370	void inline_size
		1371	idle_reify (EV_P)
		1372	{
		1373	if (expect_false (idleall))
		1374	{
		1375	int pri;
		1376
		1377	for (pri = NUMPRI; pri--; )
743	{	1378	{
744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1379	if (pendingcnt [pri])
		1380	break;
745		1381
746	if (fabs (diff) >= 1e-4)	1382	if (idlecnt [pri])
747	{	1383	{
748	ev_periodic_stop (EV_A_ w);	1384	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
749	ev_periodic_start (EV_A_ w);	1385	break;
750
751	i = 0; /* restart loop, inefficient, but time jumps should be rare */
752	}	1386	}
753	}	1387	}
754	}	1388	}
755	}	1389	}
		1390	#endif
756		1391
757	inline int	1392	void inline_speed
758	time_update_monotonic (EV_P)	1393	time_update (EV_P_ ev_tstamp max_block)
759	{
760	mn_now = get_clock ();
761
762	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
763	{
764	rt_now = rtmn_diff + mn_now;
765	return 0;
766	}
767	else
768	{
769	now_floor = mn_now;
770	rt_now = ev_time ();
771	return 1;
772	}
773	}
774
775	static void
776	time_update (EV_P)
777	{	1394	{
778	int i;	1395	int i;
779		1396
780	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1398	if (expect_true (have_monotonic))
782	{	1399	{
783	if (time_update_monotonic (EV_A))	1400	ev_tstamp odiff = rtmn_diff;
		1401
		1402	mn_now = get_clock ();
		1403
		1404	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1405	/* interpolate in the meantime */
		1406	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
784	{	1407	{
785	ev_tstamp odiff = rtmn_diff;	1408	ev_rt_now = rtmn_diff + mn_now;
		1409	return;
		1410	}
786		1411
		1412	now_floor = mn_now;
		1413	ev_rt_now = ev_time ();
		1414
787	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1415	/* loop a few times, before making important decisions.
		1416	* on the choice of "4": one iteration isn't enough,
		1417	* in case we get preempted during the calls to
		1418	* ev_time and get_clock. a second call is almost guaranteed
		1419	* to succeed in that case, though. and looping a few more times
		1420	* doesn't hurt either as we only do this on time-jumps or
		1421	* in the unlikely event of having been preempted here.
		1422	*/
		1423	for (i = 4; --i; )
788	{	1424	{
789	rtmn_diff = rt_now - mn_now;	1425	rtmn_diff = ev_rt_now - mn_now;
790		1426
791	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1427	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
792	return; /* all is well */	1428	return; /* all is well */
793		1429
794	rt_now = ev_time ();	1430	ev_rt_now = ev_time ();
795	mn_now = get_clock ();	1431	mn_now = get_clock ();
796	now_floor = mn_now;	1432	now_floor = mn_now;
797	}	1433	}
798		1434
		1435	# if EV_PERIODIC_ENABLE
		1436	periodics_reschedule (EV_A);
		1437	# endif
		1438	/* no timer adjustment, as the monotonic clock doesn't jump */
		1439	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1440	}
		1441	else
		1442	#endif
		1443	{
		1444	ev_rt_now = ev_time ();
		1445
		1446	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1447	{
		1448	#if EV_PERIODIC_ENABLE
799	periodics_reschedule (EV_A);	1449	periodics_reschedule (EV_A);
800	/* no timer adjustment, as the monotonic clock doesn't jump */	1450	#endif
801	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1451	/* adjust timers. this is easy, as the offset is the same for all of them */
		1452	for (i = 0; i < timercnt; ++i)
		1453	((WT)timers [i])->at += ev_rt_now - mn_now;
802	}	1454	}
803	}
804	else
805	#endif
806	{
807	rt_now = ev_time ();
808		1455
809	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
810	{
811	periodics_reschedule (EV_A);
812
813	/* adjust timers. this is easy, as the offset is the same for all */
814	for (i = 0; i < timercnt; ++i)
815	timers [i]->at += rt_now - mn_now;
816	}
817
818	mn_now = rt_now;	1456	mn_now = ev_rt_now;
819	}	1457	}
820	}	1458	}
821		1459
822	void	1460	void
823	ev_ref (EV_P)	1461	ev_ref (EV_P)
…		…
834	static int loop_done;	1472	static int loop_done;
835		1473
836	void	1474	void
837	ev_loop (EV_P_ int flags)	1475	ev_loop (EV_P_ int flags)
838	{	1476	{
839	double block;
840	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1477	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1478	? EVUNLOOP_ONE
		1479	: EVUNLOOP_CANCEL;
		1480
		1481	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
841		1482
842	do	1483	do
843	{	1484	{
		1485	#ifndef _WIN32
		1486	if (expect_false (curpid)) /* penalise the forking check even more */
		1487	if (expect_false (getpid () != curpid))
		1488	{
		1489	curpid = getpid ();
		1490	postfork = 1;
		1491	}
		1492	#endif
		1493
		1494	#if EV_FORK_ENABLE
		1495	/* we might have forked, so queue fork handlers */
		1496	if (expect_false (postfork))
		1497	if (forkcnt)
		1498	{
		1499	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1500	call_pending (EV_A);
		1501	}
		1502	#endif
		1503
844	/* queue check watchers (and execute them) */	1504	/* queue prepare watchers (and execute them) */
845	if (expect_false (preparecnt))	1505	if (expect_false (preparecnt))
846	{	1506	{
847	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1507	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848	call_pending (EV_A);	1508	call_pending (EV_A);
849	}	1509	}
850		1510
		1511	if (expect_false (!activecnt))
		1512	break;
		1513
		1514	/* we might have forked, so reify kernel state if necessary */
		1515	if (expect_false (postfork))
		1516	loop_fork (EV_A);
		1517
851	/* update fd-related kernel structures */	1518	/* update fd-related kernel structures */
852	fd_reify (EV_A);	1519	fd_reify (EV_A);
853		1520
854	/* calculate blocking time */	1521	/* calculate blocking time */
		1522	{
		1523	ev_tstamp waittime = 0.;
		1524	ev_tstamp sleeptime = 0.;
855		1525
856	/* we only need this for !monotonic clockor timers, but as we basically	1526	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
857	always have timers, we just calculate it always */
858	#if EV_USE_MONOTONIC
859	if (expect_true (have_monotonic))
860	time_update_monotonic (EV_A);
861	else
862	#endif
863	{	1527	{
864	rt_now = ev_time ();	1528	/* update time to cancel out callback processing overhead */
865	mn_now = rt_now;	1529	time_update (EV_A_ 1e100);
866	}
867		1530
868	if (flags & EVLOOP_NONBLOCK || idlecnt)
869	block = 0.;
870	else
871	{
872	block = MAX_BLOCKTIME;	1531	waittime = MAX_BLOCKTIME;
873		1532
874	if (timercnt)	1533	if (timercnt)
875	{	1534	{
876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1535	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
877	if (block > to) block = to;	1536	if (waittime > to) waittime = to;
878	}	1537	}
879		1538
		1539	#if EV_PERIODIC_ENABLE
880	if (periodiccnt)	1540	if (periodiccnt)
881	{	1541	{
882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1542	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
883	if (block > to) block = to;	1543	if (waittime > to) waittime = to;
884	}	1544	}
		1545	#endif
885		1546
886	if (block < 0.) block = 0.;	1547	if (expect_false (waittime < timeout_blocktime))
		1548	waittime = timeout_blocktime;
		1549
		1550	sleeptime = waittime - backend_fudge;
		1551
		1552	if (expect_true (sleeptime > io_blocktime))
		1553	sleeptime = io_blocktime;
		1554
		1555	if (sleeptime)
		1556	{
		1557	ev_sleep (sleeptime);
		1558	waittime -= sleeptime;
		1559	}
887	}	1560	}
888		1561
889	method_poll (EV_A_ block);	1562	++loop_count;
		1563	backend_poll (EV_A_ waittime);
890		1564
891	/* update rt_now, do magic */	1565	/* update ev_rt_now, do magic */
892	time_update (EV_A);	1566	time_update (EV_A_ waittime + sleeptime);
		1567	}
893		1568
894	/* queue pending timers and reschedule them */	1569	/* queue pending timers and reschedule them */
895	timers_reify (EV_A); /* relative timers called last */	1570	timers_reify (EV_A); /* relative timers called last */
		1571	#if EV_PERIODIC_ENABLE
896	periodics_reify (EV_A); /* absolute timers called first */	1572	periodics_reify (EV_A); /* absolute timers called first */
		1573	#endif
897		1574
		1575	#if EV_IDLE_ENABLE
898	/* queue idle watchers unless io or timers are pending */	1576	/* queue idle watchers unless other events are pending */
899	if (!pendingcnt)	1577	idle_reify (EV_A);
900	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1578	#endif
901		1579
902	/* queue check watchers, to be executed first */	1580	/* queue check watchers, to be executed first */
903	if (checkcnt)	1581	if (expect_false (checkcnt))
904	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1582	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
905		1583
906	call_pending (EV_A);	1584	call_pending (EV_A);
		1585
907	}	1586	}
908	while (activecnt && !loop_done);	1587	while (expect_true (activecnt && !loop_done));
909		1588
910	if (loop_done != 2)	1589	if (loop_done == EVUNLOOP_ONE)
911	loop_done = 0;	1590	loop_done = EVUNLOOP_CANCEL;
912	}	1591	}
913		1592
914	void	1593	void
915	ev_unloop (EV_P_ int how)	1594	ev_unloop (EV_P_ int how)
916	{	1595	{
917	loop_done = how;	1596	loop_done = how;
918	}	1597	}
919		1598
920	/*****************************************************************************/	1599	/*****************************************************************************/
921		1600
922	inline void	1601	void inline_size
923	wlist_add (WL *head, WL elem)	1602	wlist_add (WL *head, WL elem)
924	{	1603	{
925	elem->next = *head;	1604	elem->next = *head;
926	*head = elem;	1605	*head = elem;
927	}	1606	}
928		1607
929	inline void	1608	void inline_size
930	wlist_del (WL *head, WL elem)	1609	wlist_del (WL *head, WL elem)
931	{	1610	{
932	while (*head)	1611	while (*head)
933	{	1612	{
934	if (*head == elem)	1613	if (*head == elem)
…		…
939		1618
940	head = &(*head)->next;	1619	head = &(*head)->next;
941	}	1620	}
942	}	1621	}
943		1622
944	inline void	1623	void inline_speed
945	ev_clear_pending (EV_P_ W w)	1624	clear_pending (EV_P_ W w)
946	{	1625	{
947	if (w->pending)	1626	if (w->pending)
948	{	1627	{
949	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1628	pendings [ABSPRI (w)][w->pending - 1].w = 0;
950	w->pending = 0;	1629	w->pending = 0;
951	}	1630	}
952	}	1631	}
953		1632
954	inline void	1633	int
		1634	ev_clear_pending (EV_P_ void *w)
		1635	{
		1636	W w_ = (W)w;
		1637	int pending = w_->pending;
		1638
		1639	if (expect_true (pending))
		1640	{
		1641	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1642	w_->pending = 0;
		1643	p->w = 0;
		1644	return p->events;
		1645	}
		1646	else
		1647	return 0;
		1648	}
		1649
		1650	void inline_size
		1651	pri_adjust (EV_P_ W w)
		1652	{
		1653	int pri = w->priority;
		1654	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1655	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1656	w->priority = pri;
		1657	}
		1658
		1659	void inline_speed
955	ev_start (EV_P_ W w, int active)	1660	ev_start (EV_P_ W w, int active)
956	{	1661	{
957	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1662	pri_adjust (EV_A_ w);
958	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
959
960	w->active = active;	1663	w->active = active;
961	ev_ref (EV_A);	1664	ev_ref (EV_A);
962	}	1665	}
963		1666
964	inline void	1667	void inline_size
965	ev_stop (EV_P_ W w)	1668	ev_stop (EV_P_ W w)
966	{	1669	{
967	ev_unref (EV_A);	1670	ev_unref (EV_A);
968	w->active = 0;	1671	w->active = 0;
969	}	1672	}
970		1673
971	/*****************************************************************************/	1674	/*****************************************************************************/
972		1675
973	void	1676	void noinline
974	ev_io_start (EV_P_ struct ev_io *w)	1677	ev_io_start (EV_P_ ev_io *w)
975	{	1678	{
976	int fd = w->fd;	1679	int fd = w->fd;
977		1680
978	if (ev_is_active (w))	1681	if (expect_false (ev_is_active (w)))
979	return;	1682	return;
980		1683
981	assert (("ev_io_start called with negative fd", fd >= 0));	1684	assert (("ev_io_start called with negative fd", fd >= 0));
982		1685
983	ev_start (EV_A_ (W)w, 1);	1686	ev_start (EV_A_ (W)w, 1);
984	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1687	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
985	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1688	wlist_add (&anfds[fd].head, (WL)w);
986		1689
987	fd_change (EV_A_ fd);	1690	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1691	w->events &= ~EV_IOFDSET;
988	}	1692	}
989		1693
990	void	1694	void noinline
991	ev_io_stop (EV_P_ struct ev_io *w)	1695	ev_io_stop (EV_P_ ev_io *w)
992	{	1696	{
993	ev_clear_pending (EV_A_ (W)w);	1697	clear_pending (EV_A_ (W)w);
994	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
995	return;	1699	return;
996		1700
		1701	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1702
997	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1703	wlist_del (&anfds[w->fd].head, (WL)w);
998	ev_stop (EV_A_ (W)w);	1704	ev_stop (EV_A_ (W)w);
999		1705
1000	fd_change (EV_A_ w->fd);	1706	fd_change (EV_A_ w->fd, 1);
1001	}	1707	}
1002		1708
1003	void	1709	void noinline
1004	ev_timer_start (EV_P_ struct ev_timer *w)	1710	ev_timer_start (EV_P_ ev_timer *w)
1005	{	1711	{
1006	if (ev_is_active (w))	1712	if (expect_false (ev_is_active (w)))
1007	return;	1713	return;
1008		1714
1009	w->at += mn_now;	1715	((WT)w)->at += mn_now;
1010		1716
1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1717	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012		1718
1013	ev_start (EV_A_ (W)w, ++timercnt);	1719	ev_start (EV_A_ (W)w, ++timercnt);
1014	array_needsize (timers, timermax, timercnt, );	1720	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1015	timers [timercnt - 1] = w;	1721	timers [timercnt - 1] = (WT)w;
1016	upheap ((WT *)timers, timercnt - 1);	1722	upheap (timers, timercnt - 1);
1017	}
1018		1723
1019	void	1724	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1725	}
		1726
		1727	void noinline
1020	ev_timer_stop (EV_P_ struct ev_timer *w)	1728	ev_timer_stop (EV_P_ ev_timer *w)
1021	{	1729	{
1022	ev_clear_pending (EV_A_ (W)w);	1730	clear_pending (EV_A_ (W)w);
1023	if (!ev_is_active (w))	1731	if (expect_false (!ev_is_active (w)))
1024	return;	1732	return;
1025		1733
1026	if (w->active < timercnt--)	1734	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1735
		1736	{
		1737	int active = ((W)w)->active;
		1738
		1739	if (expect_true (--active < --timercnt))
1027	{	1740	{
1028	timers [w->active - 1] = timers [timercnt];	1741	timers [active] = timers [timercnt];
1029	downheap ((WT *)timers, timercnt, w->active - 1);	1742	adjustheap (timers, timercnt, active);
1030	}	1743	}
		1744	}
1031		1745
1032	w->at = w->repeat;	1746	((WT)w)->at -= mn_now;
1033		1747
1034	ev_stop (EV_A_ (W)w);	1748	ev_stop (EV_A_ (W)w);
1035	}	1749	}
1036		1750
1037	void	1751	void noinline
1038	ev_timer_again (EV_P_ struct ev_timer *w)	1752	ev_timer_again (EV_P_ ev_timer *w)
1039	{	1753	{
1040	if (ev_is_active (w))	1754	if (ev_is_active (w))
1041	{	1755	{
1042	if (w->repeat)	1756	if (w->repeat)
1043	{	1757	{
1044	w->at = mn_now + w->repeat;	1758	((WT)w)->at = mn_now + w->repeat;
1045	downheap ((WT *)timers, timercnt, w->active - 1);	1759	adjustheap (timers, timercnt, ((W)w)->active - 1);
1046	}	1760	}
1047	else	1761	else
1048	ev_timer_stop (EV_A_ w);	1762	ev_timer_stop (EV_A_ w);
1049	}	1763	}
1050	else if (w->repeat)	1764	else if (w->repeat)
		1765	{
		1766	w->at = w->repeat;
1051	ev_timer_start (EV_A_ w);	1767	ev_timer_start (EV_A_ w);
		1768	}
1052	}	1769	}
1053		1770
1054	void	1771	#if EV_PERIODIC_ENABLE
		1772	void noinline
1055	ev_periodic_start (EV_P_ struct ev_periodic *w)	1773	ev_periodic_start (EV_P_ ev_periodic *w)
1056	{	1774	{
1057	if (ev_is_active (w))	1775	if (expect_false (ev_is_active (w)))
1058	return;	1776	return;
1059		1777
		1778	if (w->reschedule_cb)
		1779	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1780	else if (w->interval)
		1781	{
1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1782	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061
1062	/* this formula differs from the one in periodic_reify because we do not always round up */	1783	/* this formula differs from the one in periodic_reify because we do not always round up */
1063	if (w->interval)
1064	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1784	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1785	}
		1786	else
		1787	((WT)w)->at = w->offset;
1065		1788
1066	ev_start (EV_A_ (W)w, ++periodiccnt);	1789	ev_start (EV_A_ (W)w, ++periodiccnt);
1067	array_needsize (periodics, periodicmax, periodiccnt, );	1790	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1068	periodics [periodiccnt - 1] = w;	1791	periodics [periodiccnt - 1] = (WT)w;
1069	upheap ((WT *)periodics, periodiccnt - 1);	1792	upheap (periodics, periodiccnt - 1);
1070	}
1071		1793
1072	void	1794	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1795	}
		1796
		1797	void noinline
1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1798	ev_periodic_stop (EV_P_ ev_periodic *w)
1074	{	1799	{
1075	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1076	if (!ev_is_active (w))	1801	if (expect_false (!ev_is_active (w)))
1077	return;	1802	return;
1078		1803
1079	if (w->active < periodiccnt--)	1804	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1805
		1806	{
		1807	int active = ((W)w)->active;
		1808
		1809	if (expect_true (--active < --periodiccnt))
1080	{	1810	{
1081	periodics [w->active - 1] = periodics [periodiccnt];	1811	periodics [active] = periodics [periodiccnt];
1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1812	adjustheap (periodics, periodiccnt, active);
1083	}	1813	}
		1814	}
1084		1815
1085	ev_stop (EV_A_ (W)w);	1816	ev_stop (EV_A_ (W)w);
1086	}	1817	}
		1818
		1819	void noinline
		1820	ev_periodic_again (EV_P_ ev_periodic *w)
		1821	{
		1822	/* TODO: use adjustheap and recalculation */
		1823	ev_periodic_stop (EV_A_ w);
		1824	ev_periodic_start (EV_A_ w);
		1825	}
		1826	#endif
1087		1827
1088	#ifndef SA_RESTART	1828	#ifndef SA_RESTART
1089	# define SA_RESTART 0	1829	# define SA_RESTART 0
1090	#endif	1830	#endif
1091		1831
1092	void	1832	void noinline
1093	ev_signal_start (EV_P_ struct ev_signal *w)	1833	ev_signal_start (EV_P_ ev_signal *w)
1094	{	1834	{
		1835	#if EV_MULTIPLICITY
		1836	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1837	#endif
1095	if (ev_is_active (w))	1838	if (expect_false (ev_is_active (w)))
1096	return;	1839	return;
1097		1840
1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1841	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099		1842
		1843	{
		1844	#ifndef _WIN32
		1845	sigset_t full, prev;
		1846	sigfillset (&full);
		1847	sigprocmask (SIG_SETMASK, &full, &prev);
		1848	#endif
		1849
		1850	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1851
		1852	#ifndef _WIN32
		1853	sigprocmask (SIG_SETMASK, &prev, 0);
		1854	#endif
		1855	}
		1856
1100	ev_start (EV_A_ (W)w, 1);	1857	ev_start (EV_A_ (W)w, 1);
1101	array_needsize (signals, signalmax, w->signum, signals_init);
1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1858	wlist_add (&signals [w->signum - 1].head, (WL)w);
1103		1859
1104	if (!w->next)	1860	if (!((WL)w)->next)
1105	{	1861	{
		1862	#if _WIN32
		1863	signal (w->signum, sighandler);
		1864	#else
1106	struct sigaction sa;	1865	struct sigaction sa;
1107	sa.sa_handler = sighandler;	1866	sa.sa_handler = sighandler;
1108	sigfillset (&sa.sa_mask);	1867	sigfillset (&sa.sa_mask);
1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1868	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110	sigaction (w->signum, &sa, 0);	1869	sigaction (w->signum, &sa, 0);
		1870	#endif
1111	}	1871	}
1112	}	1872	}
1113		1873
1114	void	1874	void noinline
1115	ev_signal_stop (EV_P_ struct ev_signal *w)	1875	ev_signal_stop (EV_P_ ev_signal *w)
1116	{	1876	{
1117	ev_clear_pending (EV_A_ (W)w);	1877	clear_pending (EV_A_ (W)w);
1118	if (!ev_is_active (w))	1878	if (expect_false (!ev_is_active (w)))
1119	return;	1879	return;
1120		1880
1121	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1881	wlist_del (&signals [w->signum - 1].head, (WL)w);
1122	ev_stop (EV_A_ (W)w);	1882	ev_stop (EV_A_ (W)w);
1123		1883
1124	if (!signals [w->signum - 1].head)	1884	if (!signals [w->signum - 1].head)
1125	signal (w->signum, SIG_DFL);	1885	signal (w->signum, SIG_DFL);
1126	}	1886	}
1127		1887
1128	void	1888	void
1129	ev_idle_start (EV_P_ struct ev_idle *w)	1889	ev_child_start (EV_P_ ev_child *w)
1130	{	1890	{
		1891	#if EV_MULTIPLICITY
		1892	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1893	#endif
1131	if (ev_is_active (w))	1894	if (expect_false (ev_is_active (w)))
1132	return;	1895	return;
1133		1896
1134	ev_start (EV_A_ (W)w, ++idlecnt);	1897	ev_start (EV_A_ (W)w, 1);
1135	array_needsize (idles, idlemax, idlecnt, );	1898	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1136	idles [idlecnt - 1] = w;
1137	}	1899	}
1138		1900
1139	void	1901	void
1140	ev_idle_stop (EV_P_ struct ev_idle *w)	1902	ev_child_stop (EV_P_ ev_child *w)
1141	{	1903	{
1142	ev_clear_pending (EV_A_ (W)w);	1904	clear_pending (EV_A_ (W)w);
1143	if (ev_is_active (w))	1905	if (expect_false (!ev_is_active (w)))
1144	return;	1906	return;
1145		1907
1146	idles [w->active - 1] = idles [--idlecnt];	1908	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147	ev_stop (EV_A_ (W)w);	1909	ev_stop (EV_A_ (W)w);
1148	}	1910	}
1149		1911
		1912	#if EV_STAT_ENABLE
		1913
		1914	# ifdef _WIN32
		1915	# undef lstat
		1916	# define lstat(a,b) _stati64 (a,b)
		1917	# endif
		1918
		1919	#define DEF_STAT_INTERVAL 5.0074891
		1920	#define MIN_STAT_INTERVAL 0.1074891
		1921
		1922	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1923
		1924	#if EV_USE_INOTIFY
		1925	# define EV_INOTIFY_BUFSIZE 8192
		1926
		1927	static void noinline
		1928	infy_add (EV_P_ ev_stat *w)
		1929	{
		1930	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);
		1931
		1932	if (w->wd < 0)
		1933	{
		1934	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1935
		1936	/* monitor some parent directory for speedup hints */
		1937	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1938	{
		1939	char path [4096];
		1940	strcpy (path, w->path);
		1941
		1942	do
		1943	{
		1944	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1945	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1946
		1947	char *pend = strrchr (path, '/');
		1948
		1949	if (!pend)
		1950	break; /* whoops, no '/', complain to your admin */
		1951
		1952	*pend = 0;
		1953	w->wd = inotify_add_watch (fs_fd, path, mask);
		1954	}
		1955	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1956	}
		1957	}
		1958	else
		1959	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1960
		1961	if (w->wd >= 0)
		1962	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1963	}
		1964
		1965	static void noinline
		1966	infy_del (EV_P_ ev_stat *w)
		1967	{
		1968	int slot;
		1969	int wd = w->wd;
		1970
		1971	if (wd < 0)
		1972	return;
		1973
		1974	w->wd = -2;
		1975	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1976	wlist_del (&fs_hash [slot].head, (WL)w);
		1977
		1978	/* remove this watcher, if others are watching it, they will rearm */
		1979	inotify_rm_watch (fs_fd, wd);
		1980	}
		1981
		1982	static void noinline
		1983	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1984	{
		1985	if (slot < 0)
		1986	/* overflow, need to check for all hahs slots */
		1987	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1988	infy_wd (EV_A_ slot, wd, ev);
		1989	else
		1990	{
		1991	WL w_;
		1992
		1993	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1994	{
		1995	ev_stat *w = (ev_stat *)w_;
		1996	w_ = w_->next; /* lets us remove this watcher and all before it */
		1997
		1998	if (w->wd == wd || wd == -1)
		1999	{
		2000	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2001	{
		2002	w->wd = -1;
		2003	infy_add (EV_A_ w); /* re-add, no matter what */
		2004	}
		2005
		2006	stat_timer_cb (EV_A_ &w->timer, 0);
		2007	}
		2008	}
		2009	}
		2010	}
		2011
		2012	static void
		2013	infy_cb (EV_P_ ev_io *w, int revents)
		2014	{
		2015	char buf [EV_INOTIFY_BUFSIZE];
		2016	struct inotify_event *ev = (struct inotify_event *)buf;
		2017	int ofs;
		2018	int len = read (fs_fd, buf, sizeof (buf));
		2019
		2020	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2021	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2022	}
		2023
		2024	void inline_size
		2025	infy_init (EV_P)
		2026	{
		2027	if (fs_fd != -2)
		2028	return;
		2029
		2030	fs_fd = inotify_init ();
		2031
		2032	if (fs_fd >= 0)
		2033	{
		2034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2035	ev_set_priority (&fs_w, EV_MAXPRI);
		2036	ev_io_start (EV_A_ &fs_w);
		2037	}
		2038	}
		2039
		2040	void inline_size
		2041	infy_fork (EV_P)
		2042	{
		2043	int slot;
		2044
		2045	if (fs_fd < 0)
		2046	return;
		2047
		2048	close (fs_fd);
		2049	fs_fd = inotify_init ();
		2050
		2051	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2052	{
		2053	WL w_ = fs_hash [slot].head;
		2054	fs_hash [slot].head = 0;
		2055
		2056	while (w_)
		2057	{
		2058	ev_stat *w = (ev_stat *)w_;
		2059	w_ = w_->next; /* lets us add this watcher */
		2060
		2061	w->wd = -1;
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w); /* re-add, no matter what */
		2065	else
		2066	ev_timer_start (EV_A_ &w->timer);
		2067	}
		2068
		2069	}
		2070	}
		2071
		2072	#endif
		2073
1150	void	2074	void
		2075	ev_stat_stat (EV_P_ ev_stat *w)
		2076	{
		2077	if (lstat (w->path, &w->attr) < 0)
		2078	w->attr.st_nlink = 0;
		2079	else if (!w->attr.st_nlink)
		2080	w->attr.st_nlink = 1;
		2081	}
		2082
		2083	static void noinline
		2084	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2085	{
		2086	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2087
		2088	/* we copy this here each the time so that */
		2089	/* prev has the old value when the callback gets invoked */
		2090	w->prev = w->attr;
		2091	ev_stat_stat (EV_A_ w);
		2092
		2093	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2094	if (
		2095	w->prev.st_dev != w->attr.st_dev
		2096	|| w->prev.st_ino != w->attr.st_ino
		2097	|| w->prev.st_mode != w->attr.st_mode
		2098	|| w->prev.st_nlink != w->attr.st_nlink
		2099	|| w->prev.st_uid != w->attr.st_uid
		2100	|| w->prev.st_gid != w->attr.st_gid
		2101	|| w->prev.st_rdev != w->attr.st_rdev
		2102	|| w->prev.st_size != w->attr.st_size
		2103	|| w->prev.st_atime != w->attr.st_atime
		2104	|| w->prev.st_mtime != w->attr.st_mtime
		2105	|| w->prev.st_ctime != w->attr.st_ctime
		2106	) {
		2107	#if EV_USE_INOTIFY
		2108	infy_del (EV_A_ w);
		2109	infy_add (EV_A_ w);
		2110	ev_stat_stat (EV_A_ w); /* avoid race... */
		2111	#endif
		2112
		2113	ev_feed_event (EV_A_ w, EV_STAT);
		2114	}
		2115	}
		2116
		2117	void
		2118	ev_stat_start (EV_P_ ev_stat *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	/* since we use memcmp, we need to clear any padding data etc. */
		2124	memset (&w->prev, 0, sizeof (ev_statdata));
		2125	memset (&w->attr, 0, sizeof (ev_statdata));
		2126
		2127	ev_stat_stat (EV_A_ w);
		2128
		2129	if (w->interval < MIN_STAT_INTERVAL)
		2130	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2131
		2132	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2133	ev_set_priority (&w->timer, ev_priority (w));
		2134
		2135	#if EV_USE_INOTIFY
		2136	infy_init (EV_A);
		2137
		2138	if (fs_fd >= 0)
		2139	infy_add (EV_A_ w);
		2140	else
		2141	#endif
		2142	ev_timer_start (EV_A_ &w->timer);
		2143
		2144	ev_start (EV_A_ (W)w, 1);
		2145	}
		2146
		2147	void
		2148	ev_stat_stop (EV_P_ ev_stat *w)
		2149	{
		2150	clear_pending (EV_A_ (W)w);
		2151	if (expect_false (!ev_is_active (w)))
		2152	return;
		2153
		2154	#if EV_USE_INOTIFY
		2155	infy_del (EV_A_ w);
		2156	#endif
		2157	ev_timer_stop (EV_A_ &w->timer);
		2158
		2159	ev_stop (EV_A_ (W)w);
		2160	}
		2161	#endif
		2162
		2163	#if EV_IDLE_ENABLE
		2164	void
		2165	ev_idle_start (EV_P_ ev_idle *w)
		2166	{
		2167	if (expect_false (ev_is_active (w)))
		2168	return;
		2169
		2170	pri_adjust (EV_A_ (W)w);
		2171
		2172	{
		2173	int active = ++idlecnt [ABSPRI (w)];
		2174
		2175	++idleall;
		2176	ev_start (EV_A_ (W)w, active);
		2177
		2178	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2179	idles [ABSPRI (w)][active - 1] = w;
		2180	}
		2181	}
		2182
		2183	void
		2184	ev_idle_stop (EV_P_ ev_idle *w)
		2185	{
		2186	clear_pending (EV_A_ (W)w);
		2187	if (expect_false (!ev_is_active (w)))
		2188	return;
		2189
		2190	{
		2191	int active = ((W)w)->active;
		2192
		2193	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2194	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	--idleall;
		2198	}
		2199	}
		2200	#endif
		2201
		2202	void
1151	ev_prepare_start (EV_P_ struct ev_prepare *w)	2203	ev_prepare_start (EV_P_ ev_prepare *w)
1152	{	2204	{
1153	if (ev_is_active (w))	2205	if (expect_false (ev_is_active (w)))
1154	return;	2206	return;
1155		2207
1156	ev_start (EV_A_ (W)w, ++preparecnt);	2208	ev_start (EV_A_ (W)w, ++preparecnt);
1157	array_needsize (prepares, preparemax, preparecnt, );	2209	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1158	prepares [preparecnt - 1] = w;	2210	prepares [preparecnt - 1] = w;
1159	}	2211	}
1160		2212
1161	void	2213	void
1162	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2214	ev_prepare_stop (EV_P_ ev_prepare *w)
1163	{	2215	{
1164	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1165	if (ev_is_active (w))	2217	if (expect_false (!ev_is_active (w)))
1166	return;	2218	return;
1167		2219
		2220	{
		2221	int active = ((W)w)->active;
1168	prepares [w->active - 1] = prepares [--preparecnt];	2222	prepares [active - 1] = prepares [--preparecnt];
		2223	((W)prepares [active - 1])->active = active;
		2224	}
		2225
1169	ev_stop (EV_A_ (W)w);	2226	ev_stop (EV_A_ (W)w);
1170	}	2227	}
1171		2228
1172	void	2229	void
1173	ev_check_start (EV_P_ struct ev_check *w)	2230	ev_check_start (EV_P_ ev_check *w)
1174	{	2231	{
1175	if (ev_is_active (w))	2232	if (expect_false (ev_is_active (w)))
1176	return;	2233	return;
1177		2234
1178	ev_start (EV_A_ (W)w, ++checkcnt);	2235	ev_start (EV_A_ (W)w, ++checkcnt);
1179	array_needsize (checks, checkmax, checkcnt, );	2236	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1180	checks [checkcnt - 1] = w;	2237	checks [checkcnt - 1] = w;
1181	}	2238	}
1182		2239
1183	void	2240	void
1184	ev_check_stop (EV_P_ struct ev_check *w)	2241	ev_check_stop (EV_P_ ev_check *w)
1185	{	2242	{
1186	ev_clear_pending (EV_A_ (W)w);	2243	clear_pending (EV_A_ (W)w);
1187	if (ev_is_active (w))	2244	if (expect_false (!ev_is_active (w)))
1188	return;	2245	return;
1189		2246
		2247	{
		2248	int active = ((W)w)->active;
1190	checks [w->active - 1] = checks [--checkcnt];	2249	checks [active - 1] = checks [--checkcnt];
		2250	((W)checks [active - 1])->active = active;
		2251	}
		2252
1191	ev_stop (EV_A_ (W)w);	2253	ev_stop (EV_A_ (W)w);
1192	}	2254	}
1193		2255
1194	void	2256	#if EV_EMBED_ENABLE
1195	ev_child_start (EV_P_ struct ev_child *w)	2257	void noinline
		2258	ev_embed_sweep (EV_P_ ev_embed *w)
1196	{	2259	{
		2260	ev_loop (w->other, EVLOOP_NONBLOCK);
		2261	}
		2262
		2263	static void
		2264	embed_io_cb (EV_P_ ev_io *io, int revents)
		2265	{
		2266	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2267
1197	if (ev_is_active (w))	2268	if (ev_cb (w))
		2269	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2270	else
		2271	ev_loop (w->other, EVLOOP_NONBLOCK);
		2272	}
		2273
		2274	static void
		2275	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2276	{
		2277	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2278
		2279	{
		2280	struct ev_loop *loop = w->other;
		2281
		2282	while (fdchangecnt)
		2283	{
		2284	fd_reify (EV_A);
		2285	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2286	}
		2287	}
		2288	}
		2289
		2290	#if 0
		2291	static void
		2292	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2293	{
		2294	ev_idle_stop (EV_A_ idle);
		2295	}
		2296	#endif
		2297
		2298	void
		2299	ev_embed_start (EV_P_ ev_embed *w)
		2300	{
		2301	if (expect_false (ev_is_active (w)))
1198	return;	2302	return;
		2303
		2304	{
		2305	struct ev_loop *loop = w->other;
		2306	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2307	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2308	}
		2309
		2310	ev_set_priority (&w->io, ev_priority (w));
		2311	ev_io_start (EV_A_ &w->io);
		2312
		2313	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2314	ev_set_priority (&w->prepare, EV_MINPRI);
		2315	ev_prepare_start (EV_A_ &w->prepare);
		2316
		2317	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
1199		2318
1200	ev_start (EV_A_ (W)w, 1);	2319	ev_start (EV_A_ (W)w, 1);
1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1202	}	2320	}
1203		2321
1204	void	2322	void
1205	ev_child_stop (EV_P_ struct ev_child *w)	2323	ev_embed_stop (EV_P_ ev_embed *w)
1206	{	2324	{
1207	ev_clear_pending (EV_A_ (W)w);	2325	clear_pending (EV_A_ (W)w);
1208	if (ev_is_active (w))	2326	if (expect_false (!ev_is_active (w)))
1209	return;	2327	return;
1210		2328
1211	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2329	ev_io_stop (EV_A_ &w->io);
		2330	ev_prepare_stop (EV_A_ &w->prepare);
		2331
1212	ev_stop (EV_A_ (W)w);	2332	ev_stop (EV_A_ (W)w);
1213	}	2333	}
		2334	#endif
		2335
		2336	#if EV_FORK_ENABLE
		2337	void
		2338	ev_fork_start (EV_P_ ev_fork *w)
		2339	{
		2340	if (expect_false (ev_is_active (w)))
		2341	return;
		2342
		2343	ev_start (EV_A_ (W)w, ++forkcnt);
		2344	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2345	forks [forkcnt - 1] = w;
		2346	}
		2347
		2348	void
		2349	ev_fork_stop (EV_P_ ev_fork *w)
		2350	{
		2351	clear_pending (EV_A_ (W)w);
		2352	if (expect_false (!ev_is_active (w)))
		2353	return;
		2354
		2355	{
		2356	int active = ((W)w)->active;
		2357	forks [active - 1] = forks [--forkcnt];
		2358	((W)forks [active - 1])->active = active;
		2359	}
		2360
		2361	ev_stop (EV_A_ (W)w);
		2362	}
		2363	#endif
1214		2364
1215	/*****************************************************************************/	2365	/*****************************************************************************/
1216		2366
1217	struct ev_once	2367	struct ev_once
1218	{	2368	{
1219	struct ev_io io;	2369	ev_io io;
1220	struct ev_timer to;	2370	ev_timer to;
1221	void (*cb)(int revents, void *arg);	2371	void (*cb)(int revents, void *arg);
1222	void *arg;	2372	void *arg;
1223	};	2373	};
1224		2374
1225	static void	2375	static void
…		…
1228	void (*cb)(int revents, void *arg) = once->cb;	2378	void (*cb)(int revents, void *arg) = once->cb;
1229	void *arg = once->arg;	2379	void *arg = once->arg;
1230		2380
1231	ev_io_stop (EV_A_ &once->io);	2381	ev_io_stop (EV_A_ &once->io);
1232	ev_timer_stop (EV_A_ &once->to);	2382	ev_timer_stop (EV_A_ &once->to);
1233	free (once);	2383	ev_free (once);
1234		2384
1235	cb (revents, arg);	2385	cb (revents, arg);
1236	}	2386	}
1237		2387
1238	static void	2388	static void
1239	once_cb_io (EV_P_ struct ev_io *w, int revents)	2389	once_cb_io (EV_P_ ev_io *w, int revents)
1240	{	2390	{
1241	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2391	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1242	}	2392	}
1243		2393
1244	static void	2394	static void
1245	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2395	once_cb_to (EV_P_ ev_timer *w, int revents)
1246	{	2396	{
1247	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2397	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1248	}	2398	}
1249		2399
1250	void	2400	void
1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2401	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1252	{	2402	{
1253	struct ev_once *once = malloc (sizeof (struct ev_once));	2403	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1254		2404
1255	if (!once)	2405	if (expect_false (!once))
		2406	{
1256	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2407	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1257	else	2408	return;
1258	{	2409	}
		2410
1259	once->cb = cb;	2411	once->cb = cb;
1260	once->arg = arg;	2412	once->arg = arg;
1261		2413
1262	ev_watcher_init (&once->io, once_cb_io);	2414	ev_init (&once->io, once_cb_io);
1263	if (fd >= 0)	2415	if (fd >= 0)
1264	{	2416	{
1265	ev_io_set (&once->io, fd, events);	2417	ev_io_set (&once->io, fd, events);
1266	ev_io_start (EV_A_ &once->io);	2418	ev_io_start (EV_A_ &once->io);
1267	}	2419	}
1268		2420
1269	ev_watcher_init (&once->to, once_cb_to);	2421	ev_init (&once->to, once_cb_to);
1270	if (timeout >= 0.)	2422	if (timeout >= 0.)
1271	{	2423	{
1272	ev_timer_set (&once->to, timeout, 0.);	2424	ev_timer_set (&once->to, timeout, 0.);
1273	ev_timer_start (EV_A_ &once->to);	2425	ev_timer_start (EV_A_ &once->to);
1274	}
1275	}
1276	}
1277
1278	/*****************************************************************************/
1279
1280	#if 0
1281
1282	struct ev_io wio;
1283
1284	static void
1285	sin_cb (struct ev_io *w, int revents)
1286	{
1287	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1288	}
1289
1290	static void
1291	ocb (struct ev_timer *w, int revents)
1292	{
1293	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1294	ev_timer_stop (w);
1295	ev_timer_start (w);
1296	}
1297
1298	static void
1299	scb (struct ev_signal *w, int revents)
1300	{
1301	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1302	ev_io_stop (&wio);
1303	ev_io_start (&wio);
1304	}
1305
1306	static void
1307	gcb (struct ev_signal *w, int revents)
1308	{
1309	fprintf (stderr, "generic %x\n", revents);
1310
1311	}
1312
1313	int main (void)
1314	{
1315	ev_init (0);
1316
1317	ev_io_init (&wio, sin_cb, 0, EV_READ);
1318	ev_io_start (&wio);
1319
1320	struct ev_timer t[10000];
1321
1322	#if 0
1323	int i;
1324	for (i = 0; i < 10000; ++i)
1325	{	2426	}
1326	struct ev_timer *w = t + i;
1327	ev_watcher_init (w, ocb, i);
1328	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1329	ev_timer_start (w);
1330	if (drand48 () < 0.5)
1331	ev_timer_stop (w);
1332	}
1333	#endif
1334
1335	struct ev_timer t1;
1336	ev_timer_init (&t1, ocb, 5, 10);
1337	ev_timer_start (&t1);
1338
1339	struct ev_signal sig;
1340	ev_signal_init (&sig, scb, SIGQUIT);
1341	ev_signal_start (&sig);
1342
1343	struct ev_check cw;
1344	ev_check_init (&cw, gcb);
1345	ev_check_start (&cw);
1346
1347	struct ev_idle iw;
1348	ev_idle_init (&iw, gcb);
1349	ev_idle_start (&iw);
1350
1351	ev_loop (0);
1352
1353	return 0;
1354	}	2427	}
1355		2428
		2429	#if EV_MULTIPLICITY
		2430	#include "ev_wrap.h"
1356	#endif	2431	#endif
1357		2432
		2433	#ifdef __cplusplus
		2434	}
		2435	#endif
1358		2436
1359
1360

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