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Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 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
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	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
37	# endif	57	# endif
38		58
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
40	# define EV_USE_SELECT 1	61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
		64	# endif
41	# endif	65	# endif
42		66
43	# if HAVE_POLL && HAVE_POLL_H	67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
44	# define EV_USE_POLL 1	69	# define EV_USE_SELECT 1
		70	# else
		71	# define EV_USE_SELECT 0
		72	# endif
45	# endif	73	# endif
46		74
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_POLL 1
		78	# else
		79	# define EV_USE_POLL 0
		80	# endif
49	# endif	81	# endif
50		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
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	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
53	# endif	113	# endif
54		114
55	#endif	115	#endif
56		116
57	#include <math.h>	117	#include <math.h>
58	#include <stdlib.h>	118	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	119	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	120	#include <stddef.h>
63		121
64	#include <stdio.h>	122	#include <stdio.h>
65		123
66	#include <assert.h>	124	#include <assert.h>
67	#include <errno.h>	125	#include <errno.h>
68	#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
69	#ifndef WIN32	137	#ifndef _WIN32
		138	# include <sys/time.h>
70	# 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
71	#endif	146	# endif
72	#include <sys/time.h>	147	#endif
73	#include <time.h>
74		148
75	/**/	149	/**/
76		150
77	#ifndef EV_USE_MONOTONIC	151	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	161	#endif
80		162
81	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
83	#endif	165	#endif
84		166
85	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
86	# define EV_USE_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
87	#endif	173	#endif
88		174
89	#ifndef EV_USE_EPOLL	175	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	176	# define EV_USE_EPOLL 0
91	#endif	177	#endif
92		178
93	#ifndef EV_USE_KQUEUE	179	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	180	# define EV_USE_KQUEUE 0
95	#endif	181	#endif
96		182
		183	#ifndef EV_USE_PORT
		184	# define EV_USE_PORT 0
		185	#endif
		186
97	#ifndef EV_USE_WIN32	187	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	188	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
100	# else	194	# else
101	# define EV_USE_WIN32 0	195	# define EV_PID_HASHSIZE 16
102	# endif	196	# endif
103	#endif	197	#endif
104		198
105	#ifndef EV_USE_REALTIME	199	#ifndef EV_INOTIFY_HASHSIZE
106	# define EV_USE_REALTIME 1	200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
107	#endif	205	#endif
108		206
109	/**/	207	/**/
110		208
111	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
119	#endif	217	#endif
120		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
121	/**/	238	/**/
122		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
123	#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) */
124	#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) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#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 */
127		253
128	#include "ev.h"
129
130	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
131	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	256	# define noinline __attribute__ ((noinline))
133	#else	257	#else
134	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
135	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
136	#endif	263	#endif
137		264
138	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
139	#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
140		274
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143		277
		278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
		280
144	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
147		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 */
148	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
149		292
150	/*****************************************************************************/	293	/*****************************************************************************/
151		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
152	typedef struct	345	typedef struct
153	{	346	{
154	struct ev_watcher_list *head;	347	WL head;
155	unsigned char events;	348	unsigned char events;
156	unsigned char reify;	349	unsigned char reify;
		350	#if EV_SELECT_IS_WINSOCKET
		351	SOCKET handle;
		352	#endif
157	} ANFD;	353	} ANFD;
158		354
159	typedef struct	355	typedef struct
160	{	356	{
161	W w;	357	W w;
162	int events;	358	int events;
163	} ANPENDING;	359	} ANPENDING;
164		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
		367
165	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
166		369
167	struct ev_loop	370	struct ev_loop
168	{	371	{
		372	ev_tstamp ev_rt_now;
		373	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	374	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	375	#include "ev_vars.h"
171	};
172	# undef VAR	376	#undef VAR
		377	};
173	# 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;
174		382
175	#else	383	#else
176		384
		385	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	386	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	387	#include "ev_vars.h"
179	# undef VAR	388	#undef VAR
		389
		390	static int ev_default_loop_ptr;
180		391
181	#endif	392	#endif
182		393
183	/*****************************************************************************/	394	/*****************************************************************************/
184		395
185	inline ev_tstamp	396	ev_tstamp
186	ev_time (void)	397	ev_time (void)
187	{	398	{
188	#if EV_USE_REALTIME	399	#if EV_USE_REALTIME
189	struct timespec ts;	400	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	401	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	407	#endif
197	}	408	}
198		409
199	inline ev_tstamp	410	ev_tstamp inline_size
200	get_clock (void)	411	get_clock (void)
201	{	412	{
202	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
204	{	415	{
…		…
209	#endif	420	#endif
210		421
211	return ev_time ();	422	return ev_time ();
212	}	423	}
213		424
		425	#if EV_MULTIPLICITY
214	ev_tstamp	426	ev_tstamp
215	ev_now (EV_P)	427	ev_now (EV_P)
216	{	428	{
217	return rt_now;	429	return ev_rt_now;
218	}	430	}
		431	#endif
219		432
220	#define array_roundsize(base,n) ((n) | 4 & ~3)	433	void
221		434	ev_sleep (ev_tstamp delay)
222	#define array_needsize(base,cur,cnt,init) \	435	{
223	if (expect_false ((cnt) > cur)) \	436	if (delay > 0.)
224	{ \
225	int newcnt = cur; \
226	do \
227	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \
229	} \
230	while ((cnt) > newcnt); \
231	\
232	base = realloc (base, sizeof (*base) * (newcnt)); \
233	init (base + cur, newcnt - cur); \
234	cur = newcnt; \
235	}	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	}
236		457
237	/*****************************************************************************/	458	/*****************************************************************************/
238		459
239	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
240	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
241	{	542	{
242	while (count--)	543	while (count--)
243	{	544	{
244	base->head = 0;	545	base->head = 0;
…		…
247		548
248	++base;	549	++base;
249	}	550	}
250	}	551	}
251		552
252	static void	553	void inline_speed
253	event (EV_P_ W w, int events)
254	{
255	if (w->pending)
256	{
257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
258	return;
259	}
260
261	w->pending = ++pendingcnt [ABSPRI (w)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263	pendings [ABSPRI (w)][w->pending - 1].w = w;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;
265	}
266
267	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{
270	int i;
271
272	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);
274	}
275
276	static void
277	fd_event (EV_P_ int fd, int events)	554	fd_event (EV_P_ int fd, int revents)
278	{	555	{
279	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	557	ev_io *w;
281		558
282	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)
283	{	560	{
284	int ev = w->events & events;	561	int ev = w->events & revents;
285		562
286	if (ev)	563	if (ev)
287	event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
288	}	565	}
289	}	566	}
290		567
291	/*****************************************************************************/	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	}
292		574
293	static void	575	void inline_size
294	fd_reify (EV_P)	576	fd_reify (EV_P)
295	{	577	{
296	int i;	578	int i;
297		579
298	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
299	{	581	{
300	int fd = fdchanges [i];	582	int fd = fdchanges [i];
301	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
302	struct ev_io *w;	584	ev_io *w;
303		585
304	int events = 0;	586	unsigned char events = 0;
305		587
306	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)
307	events |= w->events;	589	events |= (unsigned char)w->events;
308		590
309	anfd->reify = 0;	591	#if EV_SELECT_IS_WINSOCKET
310		592	if (events)
311	if (anfd->events != events)
312	{	593	{
313	method_modify (EV_A_ fd, anfd->events, events);	594	unsigned long argp;
314	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));
315	}	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	}
316	}	610	}
317		611
318	fdchangecnt = 0;	612	fdchangecnt = 0;
319	}	613	}
320		614
321	static void	615	void inline_size
322	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
323	{	617	{
324	if (anfds [fd].reify || fdchangecnt < 0)	618	unsigned char reify = anfds [fd].reify;
325	return;
326
327	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
328		620
		621	if (expect_true (!reify))
		622	{
329	++fdchangecnt;	623	++fdchangecnt;
330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
332	}	627	}
333		628
334	static void	629	void inline_speed
335	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
336	{	631	{
337	struct ev_io *w;	632	ev_io *w;
338		633
339	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
340	{	635	{
341	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
342	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);
343	}	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
344	}	649	}
345		650
346	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
347	static void	652	static void noinline
348	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
349	{	654	{
350	int fd;	655	int fd;
351		656
352	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	658	if (anfds [fd].events)
354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
355	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
356	}	661	}
357		662
358	/* 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 */
359	static void	664	static void noinline
360	fd_enomem (EV_P)	665	fd_enomem (EV_P)
361	{	666	{
362	int fd;	667	int fd;
363		668
364	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
365	if (anfds [fd].events)	670	if (anfds [fd].events)
366	{	671	{
367	close (fd);
368	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
369	return;	673	return;
370	}	674	}
371	}	675	}
372		676
373	/* susually called after fork if method needs to re-arm all fds from scratch */	677	/* usually called after fork if backend needs to re-arm all fds from scratch */
374	static void	678	static void noinline
375	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
376	{	680	{
377	int fd;	681	int fd;
378		682
379	/* this should be highly optimised to not do anything but set a flag */
380	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
381	if (anfds [fd].events)	684	if (anfds [fd].events)
382	{	685	{
383	anfds [fd].events = 0;	686	anfds [fd].events = 0;
384	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
385	}	688	}
386	}	689	}
387		690
388	/*****************************************************************************/	691	/*****************************************************************************/
389		692
390	static void	693	void inline_speed
391	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
392	{	695	{
393	WT w = heap [k];	696	WT w = heap [k];
394		697
395	while (k && heap [k >> 1]->at > w->at)	698	while (k)
396	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
397	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
398	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
399	k >>= 1;	707	k = p;
400	}	708	}
401		709
402	heap [k] = w;	710	heap [k] = w;
403	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
404
405	}	712	}
406		713
407	static void	714	void inline_speed
408	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
409	{	716	{
410	WT w = heap [k];	717	WT w = heap [k];
411		718
412	while (k < (N >> 1))	719	for (;;)
413	{	720	{
414	int j = k << 1;	721	int c = (k << 1) + 1;
415		722
416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
417	++j;
418
419	if (w->at <= heap [j]->at)
420	break;	724	break;
421		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
422	heap [k] = heap [j];	732	heap [k] = heap [c];
423	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
424	k = j;	735	k = c;
425	}	736	}
426		737
427	heap [k] = w;	738	heap [k] = w;
428	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
429	}	740	}
430		741
		742	void inline_size
		743	adjustheap (WT *heap, int N, int k)
		744	{
		745	upheap (heap, k);
		746	downheap (heap, N, k);
		747	}
		748
431	/*****************************************************************************/	749	/*****************************************************************************/
432		750
433	typedef struct	751	typedef struct
434	{	752	{
435	struct ev_watcher_list *head;	753	WL head;
436	sig_atomic_t volatile gotsig;	754	sig_atomic_t volatile gotsig;
437	} ANSIG;	755	} ANSIG;
438		756
439	static ANSIG *signals;	757	static ANSIG *signals;
440	static int signalmax;	758	static int signalmax;
441		759
442	static int sigpipe [2];	760	static int sigpipe [2];
443	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
444	static struct ev_io sigev;	762	static ev_io sigev;
445		763
446	static void	764	void inline_size
447	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
448	{	766	{
449	while (count--)	767	while (count--)
450	{	768	{
451	base->head = 0;	769	base->head = 0;
…		…
456	}	774	}
457		775
458	static void	776	static void
459	sighandler (int signum)	777	sighandler (int signum)
460	{	778	{
		779	#if _WIN32
		780	signal (signum, sighandler);
		781	#endif
		782
461	signals [signum - 1].gotsig = 1;	783	signals [signum - 1].gotsig = 1;
462		784
463	if (!gotsig)	785	if (!gotsig)
464	{	786	{
465	int old_errno = errno;	787	int old_errno = errno;
…		…
467	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
468	errno = old_errno;	790	errno = old_errno;
469	}	791	}
470	}	792	}
471		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
472	static void	814	static void
473	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
474	{	816	{
475	struct ev_watcher_list *w;
476	int signum;	817	int signum;
477		818
478	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
479	gotsig = 0;	820	gotsig = 0;
480		821
481	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
482	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
483	{	824	ev_feed_signal_event (EV_A_ signum + 1);
484	signals [signum].gotsig = 0;
485
486	for (w = signals [signum].head; w; w = w->next)
487	event (EV_A_ (W)w, EV_SIGNAL);
488	}
489	}	825	}
490		826
491	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
492	siginit (EV_P)	840	siginit (EV_P)
493	{	841	{
494	#ifndef WIN32	842	fd_intern (sigpipe [0]);
495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	843	fd_intern (sigpipe [1]);
496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498	/* rather than sort out wether we really need nb, set it */
499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501	#endif
502		844
503	ev_io_set (&sigev, sigpipe [0], EV_READ);	845	ev_io_set (&sigev, sigpipe [0], EV_READ);
504	ev_io_start (EV_A_ &sigev);	846	ev_io_start (EV_A_ &sigev);
505	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
506	}	848	}
507		849
508	/*****************************************************************************/	850	/*****************************************************************************/
509		851
		852	static WL childs [EV_PID_HASHSIZE];
		853
510	#ifndef WIN32	854	#ifndef _WIN32
511		855
512	static struct ev_child *childs [PID_HASHSIZE];
513	static struct ev_signal childev;	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	}
514		872
515	#ifndef WCONTINUED	873	#ifndef WCONTINUED
516	# define WCONTINUED 0	874	# define WCONTINUED 0
517	#endif	875	#endif
518		876
519	static void	877	static void
520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
521	{
522	struct ev_child *w;
523
524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
525	if (w->pid == pid || !w->pid)
526	{
527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528	w->rpid = pid;
529	w->rstatus = status;
530	event (EV_A_ (W)w, EV_CHILD);
531	}
532	}
533
534	static void
535	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
536	{	879	{
537	int pid, status;	880	int pid, status;
538		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
541	/* 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 */
542	event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543		892
544	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
545	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 */
546	}
547	}	896	}
548		897
549	#endif	898	#endif
550		899
551	/*****************************************************************************/	900	/*****************************************************************************/
552		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
553	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
554	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
555	#endif	907	#endif
556	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
557	# include "ev_epoll.c"	909	# include "ev_epoll.c"
…		…
574	{	926	{
575	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
576	}	928	}
577		929
578	/* 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 */
579	static int	931	int inline_size
580	enable_secure (void)	932	enable_secure (void)
581	{	933	{
582	#ifdef WIN32	934	#ifdef _WIN32
583	return 0;	935	return 0;
584	#else	936	#else
585	return getuid () != geteuid ()	937	return getuid () != geteuid ()
586	|| getgid () != getegid ();	938	|| getgid () != getegid ();
587	#endif	939	#endif
588	}	940	}
589		941
590	int	942	unsigned int
591	ev_method (EV_P)	943	ev_supported_backends (void)
592	{	944	{
593	return method;	945	unsigned int flags = 0;
594	}
595		946
596	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597	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)
598	{	958	{
599	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	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		978
		979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	return flags;
		984	}
		985
		986	unsigned int
		987	ev_backend (EV_P)
		988	{
		989	return backend;
		990	}
		991
		992	unsigned int
		993	ev_loop_count (EV_P)
		994	{
		995	return loop_count;
		996	}
		997
		998	void
		999	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	io_blocktime = interval;
		1002	}
		1003
		1004	void
		1005	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1006	{
		1007	timeout_blocktime = interval;
		1008	}
		1009
		1010	static void noinline
		1011	loop_init (EV_P_ unsigned int flags)
		1012	{
		1013	if (!backend)
600	{	1014	{
601	#if EV_USE_MONOTONIC	1015	#if EV_USE_MONOTONIC
602	{	1016	{
603	struct timespec ts;	1017	struct timespec ts;
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1018	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	1019	have_monotonic = 1;
606	}	1020	}
607	#endif	1021	#endif
608		1022
609	rt_now = ev_time ();	1023	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	1024	mn_now = get_clock ();
611	now_floor = mn_now;	1025	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	1026	rtmn_diff = ev_rt_now - mn_now;
613		1027
614	if (methods == EVMETHOD_AUTO)	1028	io_blocktime = 0.;
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1029	timeout_blocktime = 0.;
		1030
		1031	/* pid check not overridable via env */
		1032	#ifndef _WIN32
		1033	if (flags & EVFLAG_FORKCHECK)
		1034	curpid = getpid ();
		1035	#endif
		1036
		1037	if (!(flags & EVFLAG_NOENV)
		1038	&& !enable_secure ()
		1039	&& getenv ("LIBEV_FLAGS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	1040	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else
618	methods = EVMETHOD_ANY;
619		1041
620	method = 0;	1042	if (!(flags & 0x0000ffffUL))
		1043	flags |= ev_recommended_backends ();
		1044
		1045	backend = 0;
		1046	backend_fd = -1;
621	#if EV_USE_WIN32	1047	#if EV_USE_INOTIFY
622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1048	fs_fd = -2;
		1049	#endif
		1050
		1051	#if EV_USE_PORT
		1052	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623	#endif	1053	#endif
624	#if EV_USE_KQUEUE	1054	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1055	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626	#endif	1056	#endif
627	#if EV_USE_EPOLL	1057	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1058	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629	#endif	1059	#endif
630	#if EV_USE_POLL	1060	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1061	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632	#endif	1062	#endif
633	#if EV_USE_SELECT	1063	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1064	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635	#endif	1065	#endif
636	}
637	}
638		1066
639	void	1067	ev_init (&sigev, sigcb);
		1068	ev_set_priority (&sigev, EV_MAXPRI);
		1069	}
		1070	}
		1071
		1072	static void noinline
640	loop_destroy (EV_P)	1073	loop_destroy (EV_P)
641	{	1074	{
		1075	int i;
		1076
642	#if EV_USE_WIN32	1077	#if EV_USE_INOTIFY
643	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1078	if (fs_fd >= 0)
		1079	close (fs_fd);
		1080	#endif
		1081
		1082	if (backend_fd >= 0)
		1083	close (backend_fd);
		1084
		1085	#if EV_USE_PORT
		1086	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
644	#endif	1087	#endif
645	#if EV_USE_KQUEUE	1088	#if EV_USE_KQUEUE
646	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1089	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
647	#endif	1090	#endif
648	#if EV_USE_EPOLL	1091	#if EV_USE_EPOLL
649	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1092	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
650	#endif	1093	#endif
651	#if EV_USE_POLL	1094	#if EV_USE_POLL
652	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1095	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
653	#endif	1096	#endif
654	#if EV_USE_SELECT	1097	#if EV_USE_SELECT
655	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1098	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
656	#endif	1099	#endif
657		1100
658	method = 0;	1101	for (i = NUMPRI; i--; )
659	/*TODO*/	1102	{
660	}	1103	array_free (pending, [i]);
		1104	#if EV_IDLE_ENABLE
		1105	array_free (idle, [i]);
		1106	#endif
		1107	}
661		1108
662	void	1109	ev_free (anfds); anfdmax = 0;
		1110
		1111	/* have to use the microsoft-never-gets-it-right macro */
		1112	array_free (fdchange, EMPTY);
		1113	array_free (timer, EMPTY);
		1114	#if EV_PERIODIC_ENABLE
		1115	array_free (periodic, EMPTY);
		1116	#endif
		1117	#if EV_FORK_ENABLE
		1118	array_free (fork, EMPTY);
		1119	#endif
		1120	array_free (prepare, EMPTY);
		1121	array_free (check, EMPTY);
		1122
		1123	backend = 0;
		1124	}
		1125
		1126	void inline_size infy_fork (EV_P);
		1127
		1128	void inline_size
663	loop_fork (EV_P)	1129	loop_fork (EV_P)
664	{	1130	{
665	/*TODO*/	1131	#if EV_USE_PORT
		1132	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1133	#endif
		1134	#if EV_USE_KQUEUE
		1135	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1136	#endif
666	#if EV_USE_EPOLL	1137	#if EV_USE_EPOLL
667	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1138	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
668	#endif	1139	#endif
669	#if EV_USE_KQUEUE	1140	#if EV_USE_INOTIFY
670	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1141	infy_fork (EV_A);
671	#endif	1142	#endif
		1143
		1144	if (ev_is_active (&sigev))
		1145	{
		1146	/* default loop */
		1147
		1148	ev_ref (EV_A);
		1149	ev_io_stop (EV_A_ &sigev);
		1150	close (sigpipe [0]);
		1151	close (sigpipe [1]);
		1152
		1153	while (pipe (sigpipe))
		1154	syserr ("(libev) error creating pipe");
		1155
		1156	siginit (EV_A);
		1157	}
		1158
		1159	postfork = 0;
672	}	1160	}
673		1161
674	#if EV_MULTIPLICITY	1162	#if EV_MULTIPLICITY
675	struct ev_loop *	1163	struct ev_loop *
676	ev_loop_new (int methods)	1164	ev_loop_new (unsigned int flags)
677	{	1165	{
678	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1166	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
679		1167
		1168	memset (loop, 0, sizeof (struct ev_loop));
		1169
680	loop_init (EV_A_ methods);	1170	loop_init (EV_A_ flags);
681		1171
682	if (ev_method (EV_A))	1172	if (ev_backend (EV_A))
683	return loop;	1173	return loop;
684		1174
685	return 0;	1175	return 0;
686	}	1176	}
687		1177
688	void	1178	void
689	ev_loop_destroy (EV_P)	1179	ev_loop_destroy (EV_P)
690	{	1180	{
691	loop_destroy (EV_A);	1181	loop_destroy (EV_A);
692	free (loop);	1182	ev_free (loop);
693	}	1183	}
694		1184
695	void	1185	void
696	ev_loop_fork (EV_P)	1186	ev_loop_fork (EV_P)
697	{	1187	{
698	loop_fork (EV_A);	1188	postfork = 1;
699	}	1189	}
700		1190
701	#endif	1191	#endif
702		1192
703	#if EV_MULTIPLICITY	1193	#if EV_MULTIPLICITY
704	struct ev_loop default_loop_struct;
705	static struct ev_loop *default_loop;
706
707	struct ev_loop *	1194	struct ev_loop *
		1195	ev_default_loop_init (unsigned int flags)
708	#else	1196	#else
709	static int default_loop;
710
711	int	1197	int
		1198	ev_default_loop (unsigned int flags)
712	#endif	1199	#endif
713	ev_default_loop (int methods)
714	{	1200	{
715	if (sigpipe [0] == sigpipe [1])	1201	if (sigpipe [0] == sigpipe [1])
716	if (pipe (sigpipe))	1202	if (pipe (sigpipe))
717	return 0;	1203	return 0;
718		1204
719	if (!default_loop)	1205	if (!ev_default_loop_ptr)
720	{	1206	{
721	#if EV_MULTIPLICITY	1207	#if EV_MULTIPLICITY
722	struct ev_loop *loop = default_loop = &default_loop_struct;	1208	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
723	#else	1209	#else
724	default_loop = 1;	1210	ev_default_loop_ptr = 1;
725	#endif	1211	#endif
726		1212
727	loop_init (EV_A_ methods);	1213	loop_init (EV_A_ flags);
728		1214
729	if (ev_method (EV_A))	1215	if (ev_backend (EV_A))
730	{	1216	{
731	ev_watcher_init (&sigev, sigcb);
732	ev_set_priority (&sigev, EV_MAXPRI);
733	siginit (EV_A);	1217	siginit (EV_A);
734		1218
735	#ifndef WIN32	1219	#ifndef _WIN32
736	ev_signal_init (&childev, childcb, SIGCHLD);	1220	ev_signal_init (&childev, childcb, SIGCHLD);
737	ev_set_priority (&childev, EV_MAXPRI);	1221	ev_set_priority (&childev, EV_MAXPRI);
738	ev_signal_start (EV_A_ &childev);	1222	ev_signal_start (EV_A_ &childev);
739	ev_unref (EV_A); /* child watcher should not keep loop alive */	1223	ev_unref (EV_A); /* child watcher should not keep loop alive */
740	#endif	1224	#endif
741	}	1225	}
742	else	1226	else
743	default_loop = 0;	1227	ev_default_loop_ptr = 0;
744	}	1228	}
745		1229
746	return default_loop;	1230	return ev_default_loop_ptr;
747	}	1231	}
748		1232
749	void	1233	void
750	ev_default_destroy (void)	1234	ev_default_destroy (void)
751	{	1235	{
752	#if EV_MULTIPLICITY	1236	#if EV_MULTIPLICITY
753	struct ev_loop *loop = default_loop;	1237	struct ev_loop *loop = ev_default_loop_ptr;
754	#endif	1238	#endif
755		1239
		1240	#ifndef _WIN32
756	ev_ref (EV_A); /* child watcher */	1241	ev_ref (EV_A); /* child watcher */
757	ev_signal_stop (EV_A_ &childev);	1242	ev_signal_stop (EV_A_ &childev);
		1243	#endif
758		1244
759	ev_ref (EV_A); /* signal watcher */	1245	ev_ref (EV_A); /* signal watcher */
760	ev_io_stop (EV_A_ &sigev);	1246	ev_io_stop (EV_A_ &sigev);
761		1247
762	close (sigpipe [0]); sigpipe [0] = 0;	1248	close (sigpipe [0]); sigpipe [0] = 0;
…		…
767		1253
768	void	1254	void
769	ev_default_fork (void)	1255	ev_default_fork (void)
770	{	1256	{
771	#if EV_MULTIPLICITY	1257	#if EV_MULTIPLICITY
772	struct ev_loop *loop = default_loop;	1258	struct ev_loop *loop = ev_default_loop_ptr;
773	#endif	1259	#endif
774		1260
775	loop_fork (EV_A);	1261	if (backend)
776		1262	postfork = 1;
777	ev_io_stop (EV_A_ &sigev);
778	close (sigpipe [0]);
779	close (sigpipe [1]);
780	pipe (sigpipe);
781
782	ev_ref (EV_A); /* signal watcher */
783	siginit (EV_A);
784	}	1263	}
785		1264
786	/*****************************************************************************/	1265	/*****************************************************************************/
787		1266
788	static void	1267	void
		1268	ev_invoke (EV_P_ void *w, int revents)
		1269	{
		1270	EV_CB_INVOKE ((W)w, revents);
		1271	}
		1272
		1273	void inline_speed
789	call_pending (EV_P)	1274	call_pending (EV_P)
790	{	1275	{
791	int pri;	1276	int pri;
792		1277
793	for (pri = NUMPRI; pri--; )	1278	for (pri = NUMPRI; pri--; )
794	while (pendingcnt [pri])	1279	while (pendingcnt [pri])
795	{	1280	{
796	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1281	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797		1282
798	if (p->w)	1283	if (expect_true (p->w))
799	{	1284	{
		1285	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1286
800	p->w->pending = 0;	1287	p->w->pending = 0;
801		1288	EV_CB_INVOKE (p->w, p->events);
802	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803	}	1289	}
804	}	1290	}
805	}	1291	}
806		1292
807	static void	1293	void inline_size
808	timers_reify (EV_P)	1294	timers_reify (EV_P)
809	{	1295	{
810	while (timercnt && ((WT)timers [0])->at <= mn_now)	1296	while (timercnt && ((WT)timers [0])->at <= mn_now)
811	{	1297	{
812	struct ev_timer *w = timers [0];	1298	ev_timer *w = (ev_timer *)timers [0];
813		1299
814	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1300	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
815		1301
816	/* first reschedule or stop timer */	1302	/* first reschedule or stop timer */
817	if (w->repeat)	1303	if (w->repeat)
818	{	1304	{
819	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1305	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1306
820	((WT)w)->at = mn_now + w->repeat;	1307	((WT)w)->at += w->repeat;
		1308	if (((WT)w)->at < mn_now)
		1309	((WT)w)->at = mn_now;
		1310
821	downheap ((WT *)timers, timercnt, 0);	1311	downheap (timers, timercnt, 0);
822	}	1312	}
823	else	1313	else
824	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1314	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825		1315
826	event (EV_A_ (W)w, EV_TIMEOUT);	1316	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827	}	1317	}
828	}	1318	}
829		1319
830	static void	1320	#if EV_PERIODIC_ENABLE
		1321	void inline_size
831	periodics_reify (EV_P)	1322	periodics_reify (EV_P)
832	{	1323	{
833	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1324	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834	{	1325	{
835	struct ev_periodic *w = periodics [0];	1326	ev_periodic *w = (ev_periodic *)periodics [0];
836		1327
837	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1328	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
838		1329
839	/* first reschedule or stop timer */	1330	/* first reschedule or stop timer */
840	if (w->interval)	1331	if (w->reschedule_cb)
841	{	1332	{
		1333	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1334	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1335	downheap (periodics, periodiccnt, 0);
		1336	}
		1337	else if (w->interval)
		1338	{
842	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1339	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1340	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
843	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1341	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844	downheap ((WT *)periodics, periodiccnt, 0);	1342	downheap (periodics, periodiccnt, 0);
845	}	1343	}
846	else	1344	else
847	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1345	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848		1346
849	event (EV_A_ (W)w, EV_PERIODIC);	1347	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850	}	1348	}
851	}	1349	}
852		1350
853	static void	1351	static void noinline
854	periodics_reschedule (EV_P)	1352	periodics_reschedule (EV_P)
855	{	1353	{
856	int i;	1354	int i;
857		1355
858	/* adjust periodics after time jump */	1356	/* adjust periodics after time jump */
859	for (i = 0; i < periodiccnt; ++i)	1357	for (i = 0; i < periodiccnt; ++i)
860	{	1358	{
861	struct ev_periodic *w = periodics [i];	1359	ev_periodic *w = (ev_periodic *)periodics [i];
862		1360
		1361	if (w->reschedule_cb)
		1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863	if (w->interval)	1363	else if (w->interval)
		1364	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1365	}
		1366
		1367	/* now rebuild the heap */
		1368	for (i = periodiccnt >> 1; i--; )
		1369	downheap (periodics, periodiccnt, i);
		1370	}
		1371	#endif
		1372
		1373	#if EV_IDLE_ENABLE
		1374	void inline_size
		1375	idle_reify (EV_P)
		1376	{
		1377	if (expect_false (idleall))
		1378	{
		1379	int pri;
		1380
		1381	for (pri = NUMPRI; pri--; )
864	{	1382	{
865	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1383	if (pendingcnt [pri])
		1384	break;
866		1385
867	if (fabs (diff) >= 1e-4)	1386	if (idlecnt [pri])
868	{	1387	{
869	ev_periodic_stop (EV_A_ w);	1388	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
870	ev_periodic_start (EV_A_ w);	1389	break;
871
872	i = 0; /* restart loop, inefficient, but time jumps should be rare */
873	}	1390	}
874	}	1391	}
875	}	1392	}
876	}	1393	}
		1394	#endif
877		1395
878	inline int	1396	void inline_speed
879	time_update_monotonic (EV_P)	1397	time_update (EV_P_ ev_tstamp max_block)
880	{
881	mn_now = get_clock ();
882
883	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884	{
885	rt_now = rtmn_diff + mn_now;
886	return 0;
887	}
888	else
889	{
890	now_floor = mn_now;
891	rt_now = ev_time ();
892	return 1;
893	}
894	}
895
896	static void
897	time_update (EV_P)
898	{	1398	{
899	int i;	1399	int i;
900		1400
901	#if EV_USE_MONOTONIC	1401	#if EV_USE_MONOTONIC
902	if (expect_true (have_monotonic))	1402	if (expect_true (have_monotonic))
903	{	1403	{
904	if (time_update_monotonic (EV_A))	1404	ev_tstamp odiff = rtmn_diff;
		1405
		1406	mn_now = get_clock ();
		1407
		1408	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1409	/* interpolate in the meantime */
		1410	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
905	{	1411	{
906	ev_tstamp odiff = rtmn_diff;	1412	ev_rt_now = rtmn_diff + mn_now;
		1413	return;
		1414	}
907		1415
		1416	now_floor = mn_now;
		1417	ev_rt_now = ev_time ();
		1418
908	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1419	/* loop a few times, before making important decisions.
		1420	* on the choice of "4": one iteration isn't enough,
		1421	* in case we get preempted during the calls to
		1422	* ev_time and get_clock. a second call is almost guaranteed
		1423	* to succeed in that case, though. and looping a few more times
		1424	* doesn't hurt either as we only do this on time-jumps or
		1425	* in the unlikely event of having been preempted here.
		1426	*/
		1427	for (i = 4; --i; )
909	{	1428	{
910	rtmn_diff = rt_now - mn_now;	1429	rtmn_diff = ev_rt_now - mn_now;
911		1430
912	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1431	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913	return; /* all is well */	1432	return; /* all is well */
914		1433
915	rt_now = ev_time ();	1434	ev_rt_now = ev_time ();
916	mn_now = get_clock ();	1435	mn_now = get_clock ();
917	now_floor = mn_now;	1436	now_floor = mn_now;
918	}	1437	}
919		1438
		1439	# if EV_PERIODIC_ENABLE
		1440	periodics_reschedule (EV_A);
		1441	# endif
		1442	/* no timer adjustment, as the monotonic clock doesn't jump */
		1443	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	ev_rt_now = ev_time ();
		1449
		1450	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1451	{
		1452	#if EV_PERIODIC_ENABLE
920	periodics_reschedule (EV_A);	1453	periodics_reschedule (EV_A);
921	/* no timer adjustment, as the monotonic clock doesn't jump */	1454	#endif
922	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1455	/* adjust timers. this is easy, as the offset is the same for all of them */
		1456	for (i = 0; i < timercnt; ++i)
		1457	((WT)timers [i])->at += ev_rt_now - mn_now;
923	}	1458	}
924	}
925	else
926	#endif
927	{
928	rt_now = ev_time ();
929		1459
930	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931	{
932	periodics_reschedule (EV_A);
933
934	/* adjust timers. this is easy, as the offset is the same for all */
935	for (i = 0; i < timercnt; ++i)
936	((WT)timers [i])->at += rt_now - mn_now;
937	}
938
939	mn_now = rt_now;	1460	mn_now = ev_rt_now;
940	}	1461	}
941	}	1462	}
942		1463
943	void	1464	void
944	ev_ref (EV_P)	1465	ev_ref (EV_P)
…		…
955	static int loop_done;	1476	static int loop_done;
956		1477
957	void	1478	void
958	ev_loop (EV_P_ int flags)	1479	ev_loop (EV_P_ int flags)
959	{	1480	{
960	double block;
961	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1481	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1482	? EVUNLOOP_ONE
		1483	: EVUNLOOP_CANCEL;
		1484
		1485	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
962		1486
963	do	1487	do
964	{	1488	{
		1489	#ifndef _WIN32
		1490	if (expect_false (curpid)) /* penalise the forking check even more */
		1491	if (expect_false (getpid () != curpid))
		1492	{
		1493	curpid = getpid ();
		1494	postfork = 1;
		1495	}
		1496	#endif
		1497
		1498	#if EV_FORK_ENABLE
		1499	/* we might have forked, so queue fork handlers */
		1500	if (expect_false (postfork))
		1501	if (forkcnt)
		1502	{
		1503	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1504	call_pending (EV_A);
		1505	}
		1506	#endif
		1507
965	/* queue check watchers (and execute them) */	1508	/* queue prepare watchers (and execute them) */
966	if (expect_false (preparecnt))	1509	if (expect_false (preparecnt))
967	{	1510	{
968	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1511	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969	call_pending (EV_A);	1512	call_pending (EV_A);
970	}	1513	}
971		1514
		1515	if (expect_false (!activecnt))
		1516	break;
		1517
		1518	/* we might have forked, so reify kernel state if necessary */
		1519	if (expect_false (postfork))
		1520	loop_fork (EV_A);
		1521
972	/* update fd-related kernel structures */	1522	/* update fd-related kernel structures */
973	fd_reify (EV_A);	1523	fd_reify (EV_A);
974		1524
975	/* calculate blocking time */	1525	/* calculate blocking time */
		1526	{
		1527	ev_tstamp waittime = 0.;
		1528	ev_tstamp sleeptime = 0.;
976		1529
977	/* we only need this for !monotonic clockor timers, but as we basically	1530	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
978	always have timers, we just calculate it always */
979	#if EV_USE_MONOTONIC
980	if (expect_true (have_monotonic))
981	time_update_monotonic (EV_A);
982	else
983	#endif
984	{	1531	{
985	rt_now = ev_time ();	1532	/* update time to cancel out callback processing overhead */
986	mn_now = rt_now;	1533	time_update (EV_A_ 1e100);
987	}
988		1534
989	if (flags & EVLOOP_NONBLOCK || idlecnt)
990	block = 0.;
991	else
992	{
993	block = MAX_BLOCKTIME;	1535	waittime = MAX_BLOCKTIME;
994		1536
995	if (timercnt)	1537	if (timercnt)
996	{	1538	{
997	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1539	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
998	if (block > to) block = to;	1540	if (waittime > to) waittime = to;
999	}	1541	}
1000		1542
		1543	#if EV_PERIODIC_ENABLE
1001	if (periodiccnt)	1544	if (periodiccnt)
1002	{	1545	{
1003	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1546	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1004	if (block > to) block = to;	1547	if (waittime > to) waittime = to;
1005	}	1548	}
		1549	#endif
1006		1550
1007	if (block < 0.) block = 0.;	1551	if (expect_false (waittime < timeout_blocktime))
		1552	waittime = timeout_blocktime;
		1553
		1554	sleeptime = waittime - backend_fudge;
		1555
		1556	if (expect_true (sleeptime > io_blocktime))
		1557	sleeptime = io_blocktime;
		1558
		1559	if (sleeptime)
		1560	{
		1561	ev_sleep (sleeptime);
		1562	waittime -= sleeptime;
		1563	}
1008	}	1564	}
1009		1565
1010	method_poll (EV_A_ block);	1566	++loop_count;
		1567	backend_poll (EV_A_ waittime);
1011		1568
1012	/* update rt_now, do magic */	1569	/* update ev_rt_now, do magic */
1013	time_update (EV_A);	1570	time_update (EV_A_ waittime + sleeptime);
		1571	}
1014		1572
1015	/* queue pending timers and reschedule them */	1573	/* queue pending timers and reschedule them */
1016	timers_reify (EV_A); /* relative timers called last */	1574	timers_reify (EV_A); /* relative timers called last */
		1575	#if EV_PERIODIC_ENABLE
1017	periodics_reify (EV_A); /* absolute timers called first */	1576	periodics_reify (EV_A); /* absolute timers called first */
		1577	#endif
1018		1578
		1579	#if EV_IDLE_ENABLE
1019	/* queue idle watchers unless io or timers are pending */	1580	/* queue idle watchers unless other events are pending */
1020	if (!pendingcnt)	1581	idle_reify (EV_A);
1021	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1582	#endif
1022		1583
1023	/* queue check watchers, to be executed first */	1584	/* queue check watchers, to be executed first */
1024	if (checkcnt)	1585	if (expect_false (checkcnt))
1025	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1586	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1026		1587
1027	call_pending (EV_A);	1588	call_pending (EV_A);
		1589
1028	}	1590	}
1029	while (activecnt && !loop_done);	1591	while (expect_true (activecnt && !loop_done));
1030		1592
1031	if (loop_done != 2)	1593	if (loop_done == EVUNLOOP_ONE)
1032	loop_done = 0;	1594	loop_done = EVUNLOOP_CANCEL;
1033	}	1595	}
1034		1596
1035	void	1597	void
1036	ev_unloop (EV_P_ int how)	1598	ev_unloop (EV_P_ int how)
1037	{	1599	{
1038	loop_done = how;	1600	loop_done = how;
1039	}	1601	}
1040		1602
1041	/*****************************************************************************/	1603	/*****************************************************************************/
1042		1604
1043	inline void	1605	void inline_size
1044	wlist_add (WL *head, WL elem)	1606	wlist_add (WL *head, WL elem)
1045	{	1607	{
1046	elem->next = *head;	1608	elem->next = *head;
1047	*head = elem;	1609	*head = elem;
1048	}	1610	}
1049		1611
1050	inline void	1612	void inline_size
1051	wlist_del (WL *head, WL elem)	1613	wlist_del (WL *head, WL elem)
1052	{	1614	{
1053	while (*head)	1615	while (*head)
1054	{	1616	{
1055	if (*head == elem)	1617	if (*head == elem)
…		…
1060		1622
1061	head = &(*head)->next;	1623	head = &(*head)->next;
1062	}	1624	}
1063	}	1625	}
1064		1626
1065	inline void	1627	void inline_speed
1066	ev_clear_pending (EV_P_ W w)	1628	clear_pending (EV_P_ W w)
1067	{	1629	{
1068	if (w->pending)	1630	if (w->pending)
1069	{	1631	{
1070	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1632	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1071	w->pending = 0;	1633	w->pending = 0;
1072	}	1634	}
1073	}	1635	}
1074		1636
1075	inline void	1637	int
		1638	ev_clear_pending (EV_P_ void *w)
		1639	{
		1640	W w_ = (W)w;
		1641	int pending = w_->pending;
		1642
		1643	if (expect_true (pending))
		1644	{
		1645	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1646	w_->pending = 0;
		1647	p->w = 0;
		1648	return p->events;
		1649	}
		1650	else
		1651	return 0;
		1652	}
		1653
		1654	void inline_size
		1655	pri_adjust (EV_P_ W w)
		1656	{
		1657	int pri = w->priority;
		1658	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1659	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1660	w->priority = pri;
		1661	}
		1662
		1663	void inline_speed
1076	ev_start (EV_P_ W w, int active)	1664	ev_start (EV_P_ W w, int active)
1077	{	1665	{
1078	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1666	pri_adjust (EV_A_ w);
1079	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1080
1081	w->active = active;	1667	w->active = active;
1082	ev_ref (EV_A);	1668	ev_ref (EV_A);
1083	}	1669	}
1084		1670
1085	inline void	1671	void inline_size
1086	ev_stop (EV_P_ W w)	1672	ev_stop (EV_P_ W w)
1087	{	1673	{
1088	ev_unref (EV_A);	1674	ev_unref (EV_A);
1089	w->active = 0;	1675	w->active = 0;
1090	}	1676	}
1091		1677
1092	/*****************************************************************************/	1678	/*****************************************************************************/
1093		1679
1094	void	1680	void noinline
1095	ev_io_start (EV_P_ struct ev_io *w)	1681	ev_io_start (EV_P_ ev_io *w)
1096	{	1682	{
1097	int fd = w->fd;	1683	int fd = w->fd;
1098		1684
1099	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
1100	return;	1686	return;
1101		1687
1102	assert (("ev_io_start called with negative fd", fd >= 0));	1688	assert (("ev_io_start called with negative fd", fd >= 0));
1103		1689
1104	ev_start (EV_A_ (W)w, 1);	1690	ev_start (EV_A_ (W)w, 1);
1105	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1691	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1692	wlist_add (&anfds[fd].head, (WL)w);
1107		1693
1108	fd_change (EV_A_ fd);	1694	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1695	w->events &= ~EV_IOFDSET;
1109	}	1696	}
1110		1697
1111	void	1698	void noinline
1112	ev_io_stop (EV_P_ struct ev_io *w)	1699	ev_io_stop (EV_P_ ev_io *w)
1113	{	1700	{
1114	ev_clear_pending (EV_A_ (W)w);	1701	clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1116	return;	1703	return;
1117		1704
		1705	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1706
1118	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1707	wlist_del (&anfds[w->fd].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1120		1709
1121	fd_change (EV_A_ w->fd);	1710	fd_change (EV_A_ w->fd, 1);
1122	}	1711	}
1123		1712
1124	void	1713	void noinline
1125	ev_timer_start (EV_P_ struct ev_timer *w)	1714	ev_timer_start (EV_P_ ev_timer *w)
1126	{	1715	{
1127	if (ev_is_active (w))	1716	if (expect_false (ev_is_active (w)))
1128	return;	1717	return;
1129		1718
1130	((WT)w)->at += mn_now;	1719	((WT)w)->at += mn_now;
1131		1720
1132	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1721	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133		1722
1134	ev_start (EV_A_ (W)w, ++timercnt);	1723	ev_start (EV_A_ (W)w, ++timercnt);
1135	array_needsize (timers, timermax, timercnt, );	1724	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1136	timers [timercnt - 1] = w;	1725	timers [timercnt - 1] = (WT)w;
1137	upheap ((WT *)timers, timercnt - 1);	1726	upheap (timers, timercnt - 1);
1138		1727
1139	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1728	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1140	}	1729	}
1141		1730
1142	void	1731	void noinline
1143	ev_timer_stop (EV_P_ struct ev_timer *w)	1732	ev_timer_stop (EV_P_ ev_timer *w)
1144	{	1733	{
1145	ev_clear_pending (EV_A_ (W)w);	1734	clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))	1735	if (expect_false (!ev_is_active (w)))
1147	return;	1736	return;
1148		1737
1149	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1150		1739
1151	if (((W)w)->active < timercnt--)	1740	{
		1741	int active = ((W)w)->active;
		1742
		1743	if (expect_true (--active < --timercnt))
1152	{	1744	{
1153	timers [((W)w)->active - 1] = timers [timercnt];	1745	timers [active] = timers [timercnt];
1154	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1746	adjustheap (timers, timercnt, active);
1155	}	1747	}
		1748	}
1156		1749
1157	((WT)w)->at = w->repeat;	1750	((WT)w)->at -= mn_now;
1158		1751
1159	ev_stop (EV_A_ (W)w);	1752	ev_stop (EV_A_ (W)w);
1160	}	1753	}
1161		1754
1162	void	1755	void noinline
1163	ev_timer_again (EV_P_ struct ev_timer *w)	1756	ev_timer_again (EV_P_ ev_timer *w)
1164	{	1757	{
1165	if (ev_is_active (w))	1758	if (ev_is_active (w))
1166	{	1759	{
1167	if (w->repeat)	1760	if (w->repeat)
1168	{	1761	{
1169	((WT)w)->at = mn_now + w->repeat;	1762	((WT)w)->at = mn_now + w->repeat;
1170	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1763	adjustheap (timers, timercnt, ((W)w)->active - 1);
1171	}	1764	}
1172	else	1765	else
1173	ev_timer_stop (EV_A_ w);	1766	ev_timer_stop (EV_A_ w);
1174	}	1767	}
1175	else if (w->repeat)	1768	else if (w->repeat)
		1769	{
		1770	w->at = w->repeat;
1176	ev_timer_start (EV_A_ w);	1771	ev_timer_start (EV_A_ w);
		1772	}
1177	}	1773	}
1178		1774
1179	void	1775	#if EV_PERIODIC_ENABLE
		1776	void noinline
1180	ev_periodic_start (EV_P_ struct ev_periodic *w)	1777	ev_periodic_start (EV_P_ ev_periodic *w)
1181	{	1778	{
1182	if (ev_is_active (w))	1779	if (expect_false (ev_is_active (w)))
1183	return;	1780	return;
1184		1781
		1782	if (w->reschedule_cb)
		1783	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1784	else if (w->interval)
		1785	{
1185	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1786	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187	/* this formula differs from the one in periodic_reify because we do not always round up */	1787	/* this formula differs from the one in periodic_reify because we do not always round up */
1188	if (w->interval)
1189	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1788	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1789	}
		1790	else
		1791	((WT)w)->at = w->offset;
1190		1792
1191	ev_start (EV_A_ (W)w, ++periodiccnt);	1793	ev_start (EV_A_ (W)w, ++periodiccnt);
1192	array_needsize (periodics, periodicmax, periodiccnt, );	1794	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1193	periodics [periodiccnt - 1] = w;	1795	periodics [periodiccnt - 1] = (WT)w;
1194	upheap ((WT *)periodics, periodiccnt - 1);	1796	upheap (periodics, periodiccnt - 1);
1195		1797
1196	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1798	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1197	}	1799	}
1198		1800
1199	void	1801	void noinline
1200	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1802	ev_periodic_stop (EV_P_ ev_periodic *w)
1201	{	1803	{
1202	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1203	if (!ev_is_active (w))	1805	if (expect_false (!ev_is_active (w)))
1204	return;	1806	return;
1205		1807
1206	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1207		1809
1208	if (((W)w)->active < periodiccnt--)	1810	{
		1811	int active = ((W)w)->active;
		1812
		1813	if (expect_true (--active < --periodiccnt))
1209	{	1814	{
1210	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1815	periodics [active] = periodics [periodiccnt];
1211	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1816	adjustheap (periodics, periodiccnt, active);
1212	}	1817	}
		1818	}
1213		1819
1214	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1215	}	1821	}
1216		1822
1217	void	1823	void noinline
1218	ev_idle_start (EV_P_ struct ev_idle *w)	1824	ev_periodic_again (EV_P_ ev_periodic *w)
1219	{	1825	{
1220	if (ev_is_active (w))	1826	/* TODO: use adjustheap and recalculation */
1221	return;
1222
1223	ev_start (EV_A_ (W)w, ++idlecnt);
1224	array_needsize (idles, idlemax, idlecnt, );
1225	idles [idlecnt - 1] = w;
1226	}
1227
1228	void
1229	ev_idle_stop (EV_P_ struct ev_idle *w)
1230	{
1231	ev_clear_pending (EV_A_ (W)w);
1232	if (ev_is_active (w))
1233	return;
1234
1235	idles [((W)w)->active - 1] = idles [--idlecnt];
1236	ev_stop (EV_A_ (W)w);	1827	ev_periodic_stop (EV_A_ w);
		1828	ev_periodic_start (EV_A_ w);
1237	}	1829	}
1238		1830	#endif
1239	void
1240	ev_prepare_start (EV_P_ struct ev_prepare *w)
1241	{
1242	if (ev_is_active (w))
1243	return;
1244
1245	ev_start (EV_A_ (W)w, ++preparecnt);
1246	array_needsize (prepares, preparemax, preparecnt, );
1247	prepares [preparecnt - 1] = w;
1248	}
1249
1250	void
1251	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252	{
1253	ev_clear_pending (EV_A_ (W)w);
1254	if (ev_is_active (w))
1255	return;
1256
1257	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258	ev_stop (EV_A_ (W)w);
1259	}
1260
1261	void
1262	ev_check_start (EV_P_ struct ev_check *w)
1263	{
1264	if (ev_is_active (w))
1265	return;
1266
1267	ev_start (EV_A_ (W)w, ++checkcnt);
1268	array_needsize (checks, checkmax, checkcnt, );
1269	checks [checkcnt - 1] = w;
1270	}
1271
1272	void
1273	ev_check_stop (EV_P_ struct ev_check *w)
1274	{
1275	ev_clear_pending (EV_A_ (W)w);
1276	if (ev_is_active (w))
1277	return;
1278
1279	checks [((W)w)->active - 1] = checks [--checkcnt];
1280	ev_stop (EV_A_ (W)w);
1281	}
1282		1831
1283	#ifndef SA_RESTART	1832	#ifndef SA_RESTART
1284	# define SA_RESTART 0	1833	# define SA_RESTART 0
1285	#endif	1834	#endif
1286		1835
1287	void	1836	void noinline
1288	ev_signal_start (EV_P_ struct ev_signal *w)	1837	ev_signal_start (EV_P_ ev_signal *w)
1289	{	1838	{
1290	#if EV_MULTIPLICITY	1839	#if EV_MULTIPLICITY
1291	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1840	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1292	#endif	1841	#endif
1293	if (ev_is_active (w))	1842	if (expect_false (ev_is_active (w)))
1294	return;	1843	return;
1295		1844
1296	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1845	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297		1846
		1847	{
		1848	#ifndef _WIN32
		1849	sigset_t full, prev;
		1850	sigfillset (&full);
		1851	sigprocmask (SIG_SETMASK, &full, &prev);
		1852	#endif
		1853
		1854	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1855
		1856	#ifndef _WIN32
		1857	sigprocmask (SIG_SETMASK, &prev, 0);
		1858	#endif
		1859	}
		1860
1298	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1299	array_needsize (signals, signalmax, w->signum, signals_init);
1300	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1862	wlist_add (&signals [w->signum - 1].head, (WL)w);
1301		1863
1302	if (!((WL)w)->next)	1864	if (!((WL)w)->next)
1303	{	1865	{
		1866	#if _WIN32
		1867	signal (w->signum, sighandler);
		1868	#else
1304	struct sigaction sa;	1869	struct sigaction sa;
1305	sa.sa_handler = sighandler;	1870	sa.sa_handler = sighandler;
1306	sigfillset (&sa.sa_mask);	1871	sigfillset (&sa.sa_mask);
1307	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1872	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308	sigaction (w->signum, &sa, 0);	1873	sigaction (w->signum, &sa, 0);
		1874	#endif
1309	}	1875	}
1310	}	1876	}
1311		1877
1312	void	1878	void noinline
1313	ev_signal_stop (EV_P_ struct ev_signal *w)	1879	ev_signal_stop (EV_P_ ev_signal *w)
1314	{	1880	{
1315	ev_clear_pending (EV_A_ (W)w);	1881	clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1882	if (expect_false (!ev_is_active (w)))
1317	return;	1883	return;
1318		1884
1319	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1885	wlist_del (&signals [w->signum - 1].head, (WL)w);
1320	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1321		1887
1322	if (!signals [w->signum - 1].head)	1888	if (!signals [w->signum - 1].head)
1323	signal (w->signum, SIG_DFL);	1889	signal (w->signum, SIG_DFL);
1324	}	1890	}
1325		1891
1326	void	1892	void
1327	ev_child_start (EV_P_ struct ev_child *w)	1893	ev_child_start (EV_P_ ev_child *w)
1328	{	1894	{
1329	#if EV_MULTIPLICITY	1895	#if EV_MULTIPLICITY
1330	assert (("child watchers are only supported in the default loop", loop == default_loop));	1896	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1331	#endif	1897	#endif
1332	if (ev_is_active (w))	1898	if (expect_false (ev_is_active (w)))
1333	return;	1899	return;
1334		1900
1335	ev_start (EV_A_ (W)w, 1);	1901	ev_start (EV_A_ (W)w, 1);
1336	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1902	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1337	}	1903	}
1338		1904
1339	void	1905	void
1340	ev_child_stop (EV_P_ struct ev_child *w)	1906	ev_child_stop (EV_P_ ev_child *w)
1341	{	1907	{
1342	ev_clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1343	if (ev_is_active (w))	1909	if (expect_false (!ev_is_active (w)))
1344	return;	1910	return;
1345		1911
1346	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1347	ev_stop (EV_A_ (W)w);	1913	ev_stop (EV_A_ (W)w);
1348	}	1914	}
1349		1915
		1916	#if EV_STAT_ENABLE
		1917
		1918	# ifdef _WIN32
		1919	# undef lstat
		1920	# define lstat(a,b) _stati64 (a,b)
		1921	# endif
		1922
		1923	#define DEF_STAT_INTERVAL 5.0074891
		1924	#define MIN_STAT_INTERVAL 0.1074891
		1925
		1926	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1927
		1928	#if EV_USE_INOTIFY
		1929	# define EV_INOTIFY_BUFSIZE 8192
		1930
		1931	static void noinline
		1932	infy_add (EV_P_ ev_stat *w)
		1933	{
		1934	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);
		1935
		1936	if (w->wd < 0)
		1937	{
		1938	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1939
		1940	/* monitor some parent directory for speedup hints */
		1941	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1942	{
		1943	char path [4096];
		1944	strcpy (path, w->path);
		1945
		1946	do
		1947	{
		1948	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1949	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1950
		1951	char *pend = strrchr (path, '/');
		1952
		1953	if (!pend)
		1954	break; /* whoops, no '/', complain to your admin */
		1955
		1956	*pend = 0;
		1957	w->wd = inotify_add_watch (fs_fd, path, mask);
		1958	}
		1959	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1960	}
		1961	}
		1962	else
		1963	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1964
		1965	if (w->wd >= 0)
		1966	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1967	}
		1968
		1969	static void noinline
		1970	infy_del (EV_P_ ev_stat *w)
		1971	{
		1972	int slot;
		1973	int wd = w->wd;
		1974
		1975	if (wd < 0)
		1976	return;
		1977
		1978	w->wd = -2;
		1979	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1980	wlist_del (&fs_hash [slot].head, (WL)w);
		1981
		1982	/* remove this watcher, if others are watching it, they will rearm */
		1983	inotify_rm_watch (fs_fd, wd);
		1984	}
		1985
		1986	static void noinline
		1987	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1988	{
		1989	if (slot < 0)
		1990	/* overflow, need to check for all hahs slots */
		1991	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1992	infy_wd (EV_A_ slot, wd, ev);
		1993	else
		1994	{
		1995	WL w_;
		1996
		1997	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1998	{
		1999	ev_stat *w = (ev_stat *)w_;
		2000	w_ = w_->next; /* lets us remove this watcher and all before it */
		2001
		2002	if (w->wd == wd || wd == -1)
		2003	{
		2004	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2005	{
		2006	w->wd = -1;
		2007	infy_add (EV_A_ w); /* re-add, no matter what */
		2008	}
		2009
		2010	stat_timer_cb (EV_A_ &w->timer, 0);
		2011	}
		2012	}
		2013	}
		2014	}
		2015
		2016	static void
		2017	infy_cb (EV_P_ ev_io *w, int revents)
		2018	{
		2019	char buf [EV_INOTIFY_BUFSIZE];
		2020	struct inotify_event *ev = (struct inotify_event *)buf;
		2021	int ofs;
		2022	int len = read (fs_fd, buf, sizeof (buf));
		2023
		2024	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2025	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2026	}
		2027
		2028	void inline_size
		2029	infy_init (EV_P)
		2030	{
		2031	if (fs_fd != -2)
		2032	return;
		2033
		2034	fs_fd = inotify_init ();
		2035
		2036	if (fs_fd >= 0)
		2037	{
		2038	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2039	ev_set_priority (&fs_w, EV_MAXPRI);
		2040	ev_io_start (EV_A_ &fs_w);
		2041	}
		2042	}
		2043
		2044	void inline_size
		2045	infy_fork (EV_P)
		2046	{
		2047	int slot;
		2048
		2049	if (fs_fd < 0)
		2050	return;
		2051
		2052	close (fs_fd);
		2053	fs_fd = inotify_init ();
		2054
		2055	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2056	{
		2057	WL w_ = fs_hash [slot].head;
		2058	fs_hash [slot].head = 0;
		2059
		2060	while (w_)
		2061	{
		2062	ev_stat *w = (ev_stat *)w_;
		2063	w_ = w_->next; /* lets us add this watcher */
		2064
		2065	w->wd = -1;
		2066
		2067	if (fs_fd >= 0)
		2068	infy_add (EV_A_ w); /* re-add, no matter what */
		2069	else
		2070	ev_timer_start (EV_A_ &w->timer);
		2071	}
		2072
		2073	}
		2074	}
		2075
		2076	#endif
		2077
		2078	void
		2079	ev_stat_stat (EV_P_ ev_stat *w)
		2080	{
		2081	if (lstat (w->path, &w->attr) < 0)
		2082	w->attr.st_nlink = 0;
		2083	else if (!w->attr.st_nlink)
		2084	w->attr.st_nlink = 1;
		2085	}
		2086
		2087	static void noinline
		2088	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2089	{
		2090	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2091
		2092	/* we copy this here each the time so that */
		2093	/* prev has the old value when the callback gets invoked */
		2094	w->prev = w->attr;
		2095	ev_stat_stat (EV_A_ w);
		2096
		2097	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2098	if (
		2099	w->prev.st_dev != w->attr.st_dev
		2100	|| w->prev.st_ino != w->attr.st_ino
		2101	|| w->prev.st_mode != w->attr.st_mode
		2102	|| w->prev.st_nlink != w->attr.st_nlink
		2103	|| w->prev.st_uid != w->attr.st_uid
		2104	|| w->prev.st_gid != w->attr.st_gid
		2105	|| w->prev.st_rdev != w->attr.st_rdev
		2106	|| w->prev.st_size != w->attr.st_size
		2107	|| w->prev.st_atime != w->attr.st_atime
		2108	|| w->prev.st_mtime != w->attr.st_mtime
		2109	|| w->prev.st_ctime != w->attr.st_ctime
		2110	) {
		2111	#if EV_USE_INOTIFY
		2112	infy_del (EV_A_ w);
		2113	infy_add (EV_A_ w);
		2114	ev_stat_stat (EV_A_ w); /* avoid race... */
		2115	#endif
		2116
		2117	ev_feed_event (EV_A_ w, EV_STAT);
		2118	}
		2119	}
		2120
		2121	void
		2122	ev_stat_start (EV_P_ ev_stat *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	/* since we use memcmp, we need to clear any padding data etc. */
		2128	memset (&w->prev, 0, sizeof (ev_statdata));
		2129	memset (&w->attr, 0, sizeof (ev_statdata));
		2130
		2131	ev_stat_stat (EV_A_ w);
		2132
		2133	if (w->interval < MIN_STAT_INTERVAL)
		2134	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2135
		2136	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2137	ev_set_priority (&w->timer, ev_priority (w));
		2138
		2139	#if EV_USE_INOTIFY
		2140	infy_init (EV_A);
		2141
		2142	if (fs_fd >= 0)
		2143	infy_add (EV_A_ w);
		2144	else
		2145	#endif
		2146	ev_timer_start (EV_A_ &w->timer);
		2147
		2148	ev_start (EV_A_ (W)w, 1);
		2149	}
		2150
		2151	void
		2152	ev_stat_stop (EV_P_ ev_stat *w)
		2153	{
		2154	clear_pending (EV_A_ (W)w);
		2155	if (expect_false (!ev_is_active (w)))
		2156	return;
		2157
		2158	#if EV_USE_INOTIFY
		2159	infy_del (EV_A_ w);
		2160	#endif
		2161	ev_timer_stop (EV_A_ &w->timer);
		2162
		2163	ev_stop (EV_A_ (W)w);
		2164	}
		2165	#endif
		2166
		2167	#if EV_IDLE_ENABLE
		2168	void
		2169	ev_idle_start (EV_P_ ev_idle *w)
		2170	{
		2171	if (expect_false (ev_is_active (w)))
		2172	return;
		2173
		2174	pri_adjust (EV_A_ (W)w);
		2175
		2176	{
		2177	int active = ++idlecnt [ABSPRI (w)];
		2178
		2179	++idleall;
		2180	ev_start (EV_A_ (W)w, active);
		2181
		2182	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2183	idles [ABSPRI (w)][active - 1] = w;
		2184	}
		2185	}
		2186
		2187	void
		2188	ev_idle_stop (EV_P_ ev_idle *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	int active = ((W)w)->active;
		2196
		2197	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2198	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2199
		2200	ev_stop (EV_A_ (W)w);
		2201	--idleall;
		2202	}
		2203	}
		2204	#endif
		2205
		2206	void
		2207	ev_prepare_start (EV_P_ ev_prepare *w)
		2208	{
		2209	if (expect_false (ev_is_active (w)))
		2210	return;
		2211
		2212	ev_start (EV_A_ (W)w, ++preparecnt);
		2213	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2214	prepares [preparecnt - 1] = w;
		2215	}
		2216
		2217	void
		2218	ev_prepare_stop (EV_P_ ev_prepare *w)
		2219	{
		2220	clear_pending (EV_A_ (W)w);
		2221	if (expect_false (!ev_is_active (w)))
		2222	return;
		2223
		2224	{
		2225	int active = ((W)w)->active;
		2226	prepares [active - 1] = prepares [--preparecnt];
		2227	((W)prepares [active - 1])->active = active;
		2228	}
		2229
		2230	ev_stop (EV_A_ (W)w);
		2231	}
		2232
		2233	void
		2234	ev_check_start (EV_P_ ev_check *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++checkcnt);
		2240	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2241	checks [checkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_check_stop (EV_P_ ev_check *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	checks [active - 1] = checks [--checkcnt];
		2254	((W)checks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259
		2260	#if EV_EMBED_ENABLE
		2261	void noinline
		2262	ev_embed_sweep (EV_P_ ev_embed *w)
		2263	{
		2264	ev_loop (w->other, EVLOOP_NONBLOCK);
		2265	}
		2266
		2267	static void
		2268	embed_io_cb (EV_P_ ev_io *io, int revents)
		2269	{
		2270	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2271
		2272	if (ev_cb (w))
		2273	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2274	else
		2275	ev_loop (w->other, EVLOOP_NONBLOCK);
		2276	}
		2277
		2278	static void
		2279	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2280	{
		2281	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2282
		2283	{
		2284	struct ev_loop *loop = w->other;
		2285
		2286	while (fdchangecnt)
		2287	{
		2288	fd_reify (EV_A);
		2289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2290	}
		2291	}
		2292	}
		2293
		2294	#if 0
		2295	static void
		2296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2297	{
		2298	ev_idle_stop (EV_A_ idle);
		2299	}
		2300	#endif
		2301
		2302	void
		2303	ev_embed_start (EV_P_ ev_embed *w)
		2304	{
		2305	if (expect_false (ev_is_active (w)))
		2306	return;
		2307
		2308	{
		2309	struct ev_loop *loop = w->other;
		2310	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2312	}
		2313
		2314	ev_set_priority (&w->io, ev_priority (w));
		2315	ev_io_start (EV_A_ &w->io);
		2316
		2317	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2318	ev_set_priority (&w->prepare, EV_MINPRI);
		2319	ev_prepare_start (EV_A_ &w->prepare);
		2320
		2321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2322
		2323	ev_start (EV_A_ (W)w, 1);
		2324	}
		2325
		2326	void
		2327	ev_embed_stop (EV_P_ ev_embed *w)
		2328	{
		2329	clear_pending (EV_A_ (W)w);
		2330	if (expect_false (!ev_is_active (w)))
		2331	return;
		2332
		2333	ev_io_stop (EV_A_ &w->io);
		2334	ev_prepare_stop (EV_A_ &w->prepare);
		2335
		2336	ev_stop (EV_A_ (W)w);
		2337	}
		2338	#endif
		2339
		2340	#if EV_FORK_ENABLE
		2341	void
		2342	ev_fork_start (EV_P_ ev_fork *w)
		2343	{
		2344	if (expect_false (ev_is_active (w)))
		2345	return;
		2346
		2347	ev_start (EV_A_ (W)w, ++forkcnt);
		2348	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2349	forks [forkcnt - 1] = w;
		2350	}
		2351
		2352	void
		2353	ev_fork_stop (EV_P_ ev_fork *w)
		2354	{
		2355	clear_pending (EV_A_ (W)w);
		2356	if (expect_false (!ev_is_active (w)))
		2357	return;
		2358
		2359	{
		2360	int active = ((W)w)->active;
		2361	forks [active - 1] = forks [--forkcnt];
		2362	((W)forks [active - 1])->active = active;
		2363	}
		2364
		2365	ev_stop (EV_A_ (W)w);
		2366	}
		2367	#endif
		2368
1350	/*****************************************************************************/	2369	/*****************************************************************************/
1351		2370
1352	struct ev_once	2371	struct ev_once
1353	{	2372	{
1354	struct ev_io io;	2373	ev_io io;
1355	struct ev_timer to;	2374	ev_timer to;
1356	void (*cb)(int revents, void *arg);	2375	void (*cb)(int revents, void *arg);
1357	void *arg;	2376	void *arg;
1358	};	2377	};
1359		2378
1360	static void	2379	static void
…		…
1363	void (*cb)(int revents, void *arg) = once->cb;	2382	void (*cb)(int revents, void *arg) = once->cb;
1364	void *arg = once->arg;	2383	void *arg = once->arg;
1365		2384
1366	ev_io_stop (EV_A_ &once->io);	2385	ev_io_stop (EV_A_ &once->io);
1367	ev_timer_stop (EV_A_ &once->to);	2386	ev_timer_stop (EV_A_ &once->to);
1368	free (once);	2387	ev_free (once);
1369		2388
1370	cb (revents, arg);	2389	cb (revents, arg);
1371	}	2390	}
1372		2391
1373	static void	2392	static void
1374	once_cb_io (EV_P_ struct ev_io *w, int revents)	2393	once_cb_io (EV_P_ ev_io *w, int revents)
1375	{	2394	{
1376	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2395	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1377	}	2396	}
1378		2397
1379	static void	2398	static void
1380	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2399	once_cb_to (EV_P_ ev_timer *w, int revents)
1381	{	2400	{
1382	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2401	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1383	}	2402	}
1384		2403
1385	void	2404	void
1386	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2405	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1387	{	2406	{
1388	struct ev_once *once = malloc (sizeof (struct ev_once));	2407	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1389		2408
1390	if (!once)	2409	if (expect_false (!once))
		2410	{
1391	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2411	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1392	else	2412	return;
1393	{	2413	}
		2414
1394	once->cb = cb;	2415	once->cb = cb;
1395	once->arg = arg;	2416	once->arg = arg;
1396		2417
1397	ev_watcher_init (&once->io, once_cb_io);	2418	ev_init (&once->io, once_cb_io);
1398	if (fd >= 0)	2419	if (fd >= 0)
1399	{	2420	{
1400	ev_io_set (&once->io, fd, events);	2421	ev_io_set (&once->io, fd, events);
1401	ev_io_start (EV_A_ &once->io);	2422	ev_io_start (EV_A_ &once->io);
1402	}	2423	}
1403		2424
1404	ev_watcher_init (&once->to, once_cb_to);	2425	ev_init (&once->to, once_cb_to);
1405	if (timeout >= 0.)	2426	if (timeout >= 0.)
1406	{	2427	{
1407	ev_timer_set (&once->to, timeout, 0.);	2428	ev_timer_set (&once->to, timeout, 0.);
1408	ev_timer_start (EV_A_ &once->to);	2429	ev_timer_start (EV_A_ &once->to);
1409	}
1410	}	2430	}
1411	}	2431	}
1412		2432
		2433	#if EV_MULTIPLICITY
		2434	#include "ev_wrap.h"
		2435	#endif
		2436
		2437	#ifdef __cplusplus
		2438	}
		2439	#endif
		2440

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