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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 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
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>
…		…
66	#include <sys/types.h>	126	#include <sys/types.h>
67	#include <time.h>	127	#include <time.h>
68		128
69	#include <signal.h>	129	#include <signal.h>
70		130
71	#ifndef WIN32
72	# include <unistd.h>
73	# include <sys/time.h>
74	# include <sys/wait.h>
75	#endif
76	/**/
77
78	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1
80	#endif
81
82	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1
84	#endif
85
86	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88	#endif
89
90	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0
92	#endif
93
94	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0
96	#endif
97
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif
111
112	/**/
113
114	#ifndef CLOCK_MONOTONIC
115	# undef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0
117	#endif
118
119	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0
122	#endif
123
124	/**/
125
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131	#ifdef EV_H	131	#ifdef EV_H
132	# include EV_H	132	# include EV_H
133	#else	133	#else
134	# include "ev.h"	134	# include "ev.h"
135	#endif	135	#endif
136		136
		137	#ifndef _WIN32
		138	# include <sys/time.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
		146	# endif
		147	#endif
		148
		149	/**/
		150
		151	#ifndef EV_USE_MONOTONIC
		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
		161	#endif
		162
		163	#ifndef EV_USE_SELECT
		164	# define EV_USE_SELECT 1
		165	#endif
		166
		167	#ifndef EV_USE_POLL
		168	# ifdef _WIN32
		169	# define EV_USE_POLL 0
		170	# else
		171	# define EV_USE_POLL 1
		172	# endif
		173	#endif
		174
		175	#ifndef EV_USE_EPOLL
		176	# define EV_USE_EPOLL 0
		177	#endif
		178
		179	#ifndef EV_USE_KQUEUE
		180	# define EV_USE_KQUEUE 0
		181	#endif
		182
		183	#ifndef EV_USE_PORT
		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
		205	#endif
		206
		207	/**/
		208
		209	#ifndef CLOCK_MONOTONIC
		210	# undef EV_USE_MONOTONIC
		211	# define EV_USE_MONOTONIC 0
		212	#endif
		213
		214	#ifndef CLOCK_REALTIME
		215	# undef EV_USE_REALTIME
		216	# define EV_USE_REALTIME 0
		217	#endif
		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
		238	/**/
		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
		250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		253
137	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
138	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
139	# define inline inline	256	# define noinline __attribute__ ((noinline))
140	#else	257	#else
141	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
142	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
143	#endif	263	#endif
144		264
145	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
146	#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
147		274
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150		277
		278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
		280
151	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
154		284
		285	#if EV_USE_MONOTONIC
		286	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		287	/* giving it a reasonably high chance of working on typical architetcures */
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	288	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		289	#endif
156		290
		291	#ifdef _WIN32
157	#include "ev_win32.c"	292	# include "ev_win32.c"
		293	#endif
158		294
159	/*****************************************************************************/	295	/*****************************************************************************/
160		296
161	static void (*syserr_cb)(const char *msg);	297	static void (*syserr_cb)(const char *msg);
162		298
		299	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	300	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	301	{
165	syserr_cb = cb;	302	syserr_cb = cb;
166	}	303	}
167		304
168	static void	305	static void noinline
169	syserr (const char *msg)	306	syserr (const char *msg)
170	{	307	{
171	if (!msg)	308	if (!msg)
172	msg = "(libev) system error";	309	msg = "(libev) system error";
173		310
…		…
180	}	317	}
181	}	318	}
182		319
183	static void *(*alloc)(void *ptr, long size);	320	static void *(*alloc)(void *ptr, long size);
184		321
		322	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	323	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	324	{
187	alloc = cb;	325	alloc = cb;
188	}	326	}
189		327
190	static void *	328	inline_speed void *
191	ev_realloc (void *ptr, long size)	329	ev_realloc (void *ptr, long size)
192	{	330	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	331	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		332
195	if (!ptr && size)	333	if (!ptr && size)
…		…
209	typedef struct	347	typedef struct
210	{	348	{
211	WL head;	349	WL head;
212	unsigned char events;	350	unsigned char events;
213	unsigned char reify;	351	unsigned char reify;
		352	#if EV_SELECT_IS_WINSOCKET
		353	SOCKET handle;
		354	#endif
214	} ANFD;	355	} ANFD;
215		356
216	typedef struct	357	typedef struct
217	{	358	{
218	W w;	359	W w;
219	int events;	360	int events;
220	} ANPENDING;	361	} ANPENDING;
221		362
		363	#if EV_USE_INOTIFY
		364	typedef struct
		365	{
		366	WL head;
		367	} ANFS;
		368	#endif
		369
222	#if EV_MULTIPLICITY	370	#if EV_MULTIPLICITY
223		371
224	struct ev_loop	372	struct ev_loop
225	{	373	{
		374	ev_tstamp ev_rt_now;
		375	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	376	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	377	#include "ev_vars.h"
228	#undef VAR	378	#undef VAR
229	};	379	};
230	#include "ev_wrap.h"	380	#include "ev_wrap.h"
231		381
232	struct ev_loop default_loop_struct;	382	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	383	struct ev_loop *ev_default_loop_ptr;
234		384
235	#else	385	#else
236		386
		387	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	388	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	389	#include "ev_vars.h"
239	#undef VAR	390	#undef VAR
240		391
241	static int default_loop;	392	static int ev_default_loop_ptr;
242		393
243	#endif	394	#endif
244		395
245	/*****************************************************************************/	396	/*****************************************************************************/
246		397
247	inline ev_tstamp	398	ev_tstamp
248	ev_time (void)	399	ev_time (void)
249	{	400	{
250	#if EV_USE_REALTIME	401	#if EV_USE_REALTIME
251	struct timespec ts;	402	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	403	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	407	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	408	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	409	#endif
259	}	410	}
260		411
261	inline ev_tstamp	412	ev_tstamp inline_size
262	get_clock (void)	413	get_clock (void)
263	{	414	{
264	#if EV_USE_MONOTONIC	415	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	416	if (expect_true (have_monotonic))
266	{	417	{
…		…
271	#endif	422	#endif
272		423
273	return ev_time ();	424	return ev_time ();
274	}	425	}
275		426
		427	#if EV_MULTIPLICITY
276	ev_tstamp	428	ev_tstamp
277	ev_now (EV_P)	429	ev_now (EV_P)
278	{	430	{
279	return rt_now;	431	return ev_rt_now;
280	}	432	}
		433	#endif
281		434
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	435	void
		436	ev_sleep (ev_tstamp delay)
		437	{
		438	if (delay > 0.)
		439	{
		440	#if EV_USE_NANOSLEEP
		441	struct timespec ts;
		442
		443	ts.tv_sec = (time_t)delay;
		444	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		445
		446	nanosleep (&ts, 0);
		447	#elif defined(_WIN32)
		448	Sleep (delay * 1e3);
		449	#else
		450	struct timeval tv;
		451
		452	tv.tv_sec = (time_t)delay;
		453	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		454
		455	select (0, 0, 0, 0, &tv);
		456	#endif
		457	}
		458	}
		459
		460	/*****************************************************************************/
		461
		462	int inline_size
		463	array_nextsize (int elem, int cur, int cnt)
		464	{
		465	int ncur = cur + 1;
		466
		467	do
		468	ncur <<= 1;
		469	while (cnt > ncur);
		470
		471	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		472	if (elem * ncur > 4096)
		473	{
		474	ncur *= elem;
		475	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		476	ncur = ncur - sizeof (void *) * 4;
		477	ncur /= elem;
		478	}
		479
		480	return ncur;
		481	}
		482
		483	static noinline void *
		484	array_realloc (int elem, void *base, int *cur, int cnt)
		485	{
		486	*cur = array_nextsize (elem, *cur, cnt);
		487	return ev_realloc (base, elem * *cur);
		488	}
283		489
284	#define array_needsize(type,base,cur,cnt,init) \	490	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	491	if (expect_false ((cnt) > (cur))) \
286	{ \	492	{ \
287	int newcnt = cur; \	493	int ocur_ = (cur); \
288	do \	494	(base) = (type *)array_realloc \
289	{ \	495	(sizeof (type), (base), &(cur), (cnt)); \
290	newcnt = array_roundsize (type, newcnt << 1); \	496	init ((base) + (ocur_), (cur) - ocur_); \
291	} \
292	while ((cnt) > newcnt); \
293	\
294	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295	init (base + cur, newcnt - cur); \
296	cur = newcnt; \
297	}	497	}
298		498
		499	#if 0
299	#define array_slim(type,stem) \	500	#define array_slim(type,stem) \
300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	501	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301	{ \	502	{ \
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	503	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	504	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	505	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	506	}
306		507	#endif
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311		508
312	#define array_free(stem, idx) \	509	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	510	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		511
315	/*****************************************************************************/	512	/*****************************************************************************/
316		513
317	static void	514	void noinline
		515	ev_feed_event (EV_P_ void *w, int revents)
		516	{
		517	W w_ = (W)w;
		518	int pri = ABSPRI (w_);
		519
		520	if (expect_false (w_->pending))
		521	pendings [pri][w_->pending - 1].events |= revents;
		522	else
		523	{
		524	w_->pending = ++pendingcnt [pri];
		525	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		526	pendings [pri][w_->pending - 1].w = w_;
		527	pendings [pri][w_->pending - 1].events = revents;
		528	}
		529	}
		530
		531	void inline_speed
		532	queue_events (EV_P_ W *events, int eventcnt, int type)
		533	{
		534	int i;
		535
		536	for (i = 0; i < eventcnt; ++i)
		537	ev_feed_event (EV_A_ events [i], type);
		538	}
		539
		540	/*****************************************************************************/
		541
		542	void inline_size
318	anfds_init (ANFD *base, int count)	543	anfds_init (ANFD *base, int count)
319	{	544	{
320	while (count--)	545	while (count--)
321	{	546	{
322	base->head = 0;	547	base->head = 0;
…		…
325		550
326	++base;	551	++base;
327	}	552	}
328	}	553	}
329		554
330	void	555	void inline_speed
331	ev_feed_event (EV_P_ void *w, int revents)
332	{
333	W w_ = (W)w;
334
335	if (w_->pending)
336	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338	return;
339	}
340
341	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}
346
347	static void
348	queue_events (EV_P_ W *events, int eventcnt, int type)
349	{
350	int i;
351
352	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);
354	}
355
356	inline void
357	fd_event (EV_P_ int fd, int revents)	556	fd_event (EV_P_ int fd, int revents)
358	{	557	{
359	ANFD *anfd = anfds + fd;	558	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	559	ev_io *w;
361		560
362	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	561	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363	{	562	{
364	int ev = w->events & revents;	563	int ev = w->events & revents;
365		564
366	if (ev)	565	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	566	ev_feed_event (EV_A_ (W)w, ev);
…		…
369	}	568	}
370		569
371	void	570	void
372	ev_feed_fd_event (EV_P_ int fd, int revents)	571	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	572	{
		573	if (fd >= 0 && fd < anfdmax)
374	fd_event (EV_A_ fd, revents);	574	fd_event (EV_A_ fd, revents);
375	}	575	}
376		576
377	/*****************************************************************************/	577	void inline_size
378
379	static void
380	fd_reify (EV_P)	578	fd_reify (EV_P)
381	{	579	{
382	int i;	580	int i;
383		581
384	for (i = 0; i < fdchangecnt; ++i)	582	for (i = 0; i < fdchangecnt; ++i)
385	{	583	{
386	int fd = fdchanges [i];	584	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	585	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	586	ev_io *w;
389		587
390	int events = 0;	588	unsigned char events = 0;
391		589
392	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	590	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393	events |= w->events;	591	events |= (unsigned char)w->events;
394		592
		593	#if EV_SELECT_IS_WINSOCKET
		594	if (events)
		595	{
		596	unsigned long argp;
		597	anfd->handle = _get_osfhandle (fd);
		598	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		599	}
		600	#endif
		601
		602	{
		603	unsigned char o_events = anfd->events;
		604	unsigned char o_reify = anfd->reify;
		605
395	anfd->reify = 0;	606	anfd->reify = 0;
396
397	method_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	607	anfd->events = events;
		608
		609	if (o_events != events || o_reify & EV_IOFDSET)
		610	backend_modify (EV_A_ fd, o_events, events);
		611	}
399	}	612	}
400		613
401	fdchangecnt = 0;	614	fdchangecnt = 0;
402	}	615	}
403		616
404	static void	617	void inline_size
405	fd_change (EV_P_ int fd)	618	fd_change (EV_P_ int fd, int flags)
406	{	619	{
407	if (anfds [fd].reify)	620	unsigned char reify = anfds [fd].reify;
408	return;
409
410	anfds [fd].reify = 1;	621	anfds [fd].reify |= flags;
411		622
		623	if (expect_true (!reify))
		624	{
412	++fdchangecnt;	625	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	626	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	627	fdchanges [fdchangecnt - 1] = fd;
		628	}
415	}	629	}
416		630
417	static void	631	void inline_speed
418	fd_kill (EV_P_ int fd)	632	fd_kill (EV_P_ int fd)
419	{	633	{
420	struct ev_io *w;	634	ev_io *w;
421		635
422	while ((w = (struct ev_io *)anfds [fd].head))	636	while ((w = (ev_io *)anfds [fd].head))
423	{	637	{
424	ev_io_stop (EV_A_ w);	638	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	639	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426	}	640	}
427	}	641	}
428		642
429	static int	643	int inline_size
430	fd_valid (int fd)	644	fd_valid (int fd)
431	{	645	{
432	#ifdef WIN32	646	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	647	return _get_osfhandle (fd) != -1;
434	#else	648	#else
435	return fcntl (fd, F_GETFD) != -1;	649	return fcntl (fd, F_GETFD) != -1;
436	#endif	650	#endif
437	}	651	}
438		652
439	/* called on EBADF to verify fds */	653	/* called on EBADF to verify fds */
440	static void	654	static void noinline
441	fd_ebadf (EV_P)	655	fd_ebadf (EV_P)
442	{	656	{
443	int fd;	657	int fd;
444		658
445	for (fd = 0; fd < anfdmax; ++fd)	659	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	661	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	662	fd_kill (EV_A_ fd);
449	}	663	}
450		664
451	/* called on ENOMEM in select/poll to kill some fds and retry */	665	/* called on ENOMEM in select/poll to kill some fds and retry */
452	static void	666	static void noinline
453	fd_enomem (EV_P)	667	fd_enomem (EV_P)
454	{	668	{
455	int fd;	669	int fd;
456		670
457	for (fd = anfdmax; fd--; )	671	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	674	fd_kill (EV_A_ fd);
461	return;	675	return;
462	}	676	}
463	}	677	}
464		678
465	/* usually called after fork if method needs to re-arm all fds from scratch */	679	/* usually called after fork if backend needs to re-arm all fds from scratch */
466	static void	680	static void noinline
467	fd_rearm_all (EV_P)	681	fd_rearm_all (EV_P)
468	{	682	{
469	int fd;	683	int fd;
470		684
471	/* this should be highly optimised to not do anything but set a flag */
472	for (fd = 0; fd < anfdmax; ++fd)	685	for (fd = 0; fd < anfdmax; ++fd)
473	if (anfds [fd].events)	686	if (anfds [fd].events)
474	{	687	{
475	anfds [fd].events = 0;	688	anfds [fd].events = 0;
476	fd_change (EV_A_ fd);	689	fd_change (EV_A_ fd, EV_IOFDSET | 1);
477	}	690	}
478	}	691	}
479		692
480	/*****************************************************************************/	693	/*****************************************************************************/
481		694
482	static void	695	void inline_speed
483	upheap (WT *heap, int k)	696	upheap (WT *heap, int k)
484	{	697	{
485	WT w = heap [k];	698	WT w = heap [k];
486		699
487	while (k && heap [k >> 1]->at > w->at)	700	while (k)
488	{	701	{
		702	int p = (k - 1) >> 1;
		703
		704	if (heap [p]->at <= w->at)
		705	break;
		706
489	heap [k] = heap [k >> 1];	707	heap [k] = heap [p];
490	((W)heap [k])->active = k + 1;	708	((W)heap [k])->active = k + 1;
491	k >>= 1;	709	k = p;
492	}	710	}
493		711
494	heap [k] = w;	712	heap [k] = w;
495	((W)heap [k])->active = k + 1;	713	((W)heap [k])->active = k + 1;
496
497	}	714	}
498		715
499	static void	716	void inline_speed
500	downheap (WT *heap, int N, int k)	717	downheap (WT *heap, int N, int k)
501	{	718	{
502	WT w = heap [k];	719	WT w = heap [k];
503		720
504	while (k < (N >> 1))	721	for (;;)
505	{	722	{
506	int j = k << 1;	723	int c = (k << 1) + 1;
507		724
508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	725	if (c >= N)
509	++j;
510
511	if (w->at <= heap [j]->at)
512	break;	726	break;
513		727
		728	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		729	? 1 : 0;
		730
		731	if (w->at <= heap [c]->at)
		732	break;
		733
514	heap [k] = heap [j];	734	heap [k] = heap [c];
515	((W)heap [k])->active = k + 1;	735	((W)heap [k])->active = k + 1;
		736
516	k = j;	737	k = c;
517	}	738	}
518		739
519	heap [k] = w;	740	heap [k] = w;
520	((W)heap [k])->active = k + 1;	741	((W)heap [k])->active = k + 1;
521	}	742	}
522		743
523	inline void	744	void inline_size
524	adjustheap (WT *heap, int N, int k, ev_tstamp at)	745	adjustheap (WT *heap, int N, int k)
525	{	746	{
526	ev_tstamp old_at = heap [k]->at;	747	upheap (heap, k);
527	heap [k]->at = at;
528
529	if (old_at < at)
530	downheap (heap, N, k);	748	downheap (heap, N, k);
531	else
532	upheap (heap, k);
533	}	749	}
534		750
535	/*****************************************************************************/	751	/*****************************************************************************/
536		752
537	typedef struct	753	typedef struct
…		…
543	static ANSIG *signals;	759	static ANSIG *signals;
544	static int signalmax;	760	static int signalmax;
545		761
546	static int sigpipe [2];	762	static int sigpipe [2];
547	static sig_atomic_t volatile gotsig;	763	static sig_atomic_t volatile gotsig;
548	static struct ev_io sigev;	764	static ev_io sigev;
549		765
550	static void	766	void inline_size
551	signals_init (ANSIG *base, int count)	767	signals_init (ANSIG *base, int count)
552	{	768	{
553	while (count--)	769	while (count--)
554	{	770	{
555	base->head = 0;	771	base->head = 0;
…		…
560	}	776	}
561		777
562	static void	778	static void
563	sighandler (int signum)	779	sighandler (int signum)
564	{	780	{
565	#if WIN32	781	#if _WIN32
566	signal (signum, sighandler);	782	signal (signum, sighandler);
567	#endif	783	#endif
568		784
569	signals [signum - 1].gotsig = 1;	785	signals [signum - 1].gotsig = 1;
570		786
571	if (!gotsig)	787	if (!gotsig)
572	{	788	{
573	int old_errno = errno;	789	int old_errno = errno;
574	gotsig = 1;	790	gotsig = 1;
575	#ifdef WIN32
576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577	#else
578	write (sigpipe [1], &signum, 1);	791	write (sigpipe [1], &signum, 1);
579	#endif
580	errno = old_errno;	792	errno = old_errno;
581	}	793	}
582	}	794	}
583		795
584	void	796	void noinline
585	ev_feed_signal_event (EV_P_ int signum)	797	ev_feed_signal_event (EV_P_ int signum)
586	{	798	{
587	WL w;	799	WL w;
588		800
589	#if EV_MULTIPLICITY	801	#if EV_MULTIPLICITY
590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	802	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591	#endif	803	#endif
592		804
593	--signum;	805	--signum;
594		806
595	if (signum < 0 || signum >= signalmax)	807	if (signum < 0 || signum >= signalmax)
…		…
600	for (w = signals [signum].head; w; w = w->next)	812	for (w = signals [signum].head; w; w = w->next)
601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	813	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602	}	814	}
603		815
604	static void	816	static void
605	sigcb (EV_P_ struct ev_io *iow, int revents)	817	sigcb (EV_P_ ev_io *iow, int revents)
606	{	818	{
607	int signum;	819	int signum;
608		820
609	#ifdef WIN32
610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611	#else
612	read (sigpipe [0], &revents, 1);	821	read (sigpipe [0], &revents, 1);
613	#endif
614	gotsig = 0;	822	gotsig = 0;
615		823
616	for (signum = signalmax; signum--; )	824	for (signum = signalmax; signum--; )
617	if (signals [signum].gotsig)	825	if (signals [signum].gotsig)
618	ev_feed_signal_event (EV_A_ signum + 1);	826	ev_feed_signal_event (EV_A_ signum + 1);
619	}	827	}
620		828
621	static void	829	void inline_speed
		830	fd_intern (int fd)
		831	{
		832	#ifdef _WIN32
		833	int arg = 1;
		834	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		835	#else
		836	fcntl (fd, F_SETFD, FD_CLOEXEC);
		837	fcntl (fd, F_SETFL, O_NONBLOCK);
		838	#endif
		839	}
		840
		841	static void noinline
622	siginit (EV_P)	842	siginit (EV_P)
623	{	843	{
624	#ifndef WIN32	844	fd_intern (sigpipe [0]);
625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	845	fd_intern (sigpipe [1]);
626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628	/* rather than sort out wether we really need nb, set it */
629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631	#endif
632		846
633	ev_io_set (&sigev, sigpipe [0], EV_READ);	847	ev_io_set (&sigev, sigpipe [0], EV_READ);
634	ev_io_start (EV_A_ &sigev);	848	ev_io_start (EV_A_ &sigev);
635	ev_unref (EV_A); /* child watcher should not keep loop alive */	849	ev_unref (EV_A); /* child watcher should not keep loop alive */
636	}	850	}
637		851
638	/*****************************************************************************/	852	/*****************************************************************************/
639		853
640	static struct ev_child *childs [PID_HASHSIZE];	854	static WL childs [EV_PID_HASHSIZE];
641		855
642	#ifndef WIN32	856	#ifndef _WIN32
643		857
644	static struct ev_signal childev;	858	static ev_signal childev;
		859
		860	void inline_speed
		861	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		862	{
		863	ev_child *w;
		864
		865	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		866	if (w->pid == pid || !w->pid)
		867	{
		868	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		869	w->rpid = pid;
		870	w->rstatus = status;
		871	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		872	}
		873	}
645		874
646	#ifndef WCONTINUED	875	#ifndef WCONTINUED
647	# define WCONTINUED 0	876	# define WCONTINUED 0
648	#endif	877	#endif
649		878
650	static void	879	static void
651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652	{
653	struct ev_child *w;
654
655	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656	if (w->pid == pid || !w->pid)
657	{
658	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659	w->rpid = pid;
660	w->rstatus = status;
661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
662	}
663	}
664
665	static void
666	childcb (EV_P_ struct ev_signal *sw, int revents)	880	childcb (EV_P_ ev_signal *sw, int revents)
667	{	881	{
668	int pid, status;	882	int pid, status;
669		883
		884	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	885	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671	{	886	if (!WCONTINUED
		887	|| errno != EINVAL
		888	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		889	return;
		890
672	/* make sure we are called again until all childs have been reaped */	891	/* make sure we are called again until all childs have been reaped */
		892	/* we need to do it this way so that the callback gets called before we continue */
673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	893	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674		894
675	child_reap (EV_A_ sw, pid, pid, status);	895	child_reap (EV_A_ sw, pid, pid, status);
		896	if (EV_PID_HASHSIZE > 1)
676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	897	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
677	}
678	}	898	}
679		899
680	#endif	900	#endif
681		901
682	/*****************************************************************************/	902	/*****************************************************************************/
683		903
		904	#if EV_USE_PORT
		905	# include "ev_port.c"
		906	#endif
684	#if EV_USE_KQUEUE	907	#if EV_USE_KQUEUE
685	# include "ev_kqueue.c"	908	# include "ev_kqueue.c"
686	#endif	909	#endif
687	#if EV_USE_EPOLL	910	#if EV_USE_EPOLL
688	# include "ev_epoll.c"	911	# include "ev_epoll.c"
…		…
705	{	928	{
706	return EV_VERSION_MINOR;	929	return EV_VERSION_MINOR;
707	}	930	}
708		931
709	/* return true if we are running with elevated privileges and should ignore env variables */	932	/* return true if we are running with elevated privileges and should ignore env variables */
710	static int	933	int inline_size
711	enable_secure (void)	934	enable_secure (void)
712	{	935	{
713	#ifdef WIN32	936	#ifdef _WIN32
714	return 0;	937	return 0;
715	#else	938	#else
716	return getuid () != geteuid ()	939	return getuid () != geteuid ()
717	|| getgid () != getegid ();	940	|| getgid () != getegid ();
718	#endif	941	#endif
719	}	942	}
720		943
721	int	944	unsigned int
722	ev_method (EV_P)	945	ev_supported_backends (void)
723	{	946	{
724	return method;	947	unsigned int flags = 0;
725	}
726		948
727	static void	949	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728	loop_init (EV_P_ int methods)	950	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		951	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		952	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		953	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		954
		955	return flags;
		956	}
		957
		958	unsigned int
		959	ev_recommended_backends (void)
729	{	960	{
730	if (!method)	961	unsigned int flags = ev_supported_backends ();
		962
		963	#ifndef __NetBSD__
		964	/* kqueue is borked on everything but netbsd apparently */
		965	/* it usually doesn't work correctly on anything but sockets and pipes */
		966	flags &= ~EVBACKEND_KQUEUE;
		967	#endif
		968	#ifdef __APPLE__
		969	// flags &= ~EVBACKEND_KQUEUE; for documentation
		970	flags &= ~EVBACKEND_POLL;
		971	#endif
		972
		973	return flags;
		974	}
		975
		976	unsigned int
		977	ev_embeddable_backends (void)
		978	{
		979	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		980
		981	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		982	/* please fix it and tell me how to detect the fix */
		983	flags &= ~EVBACKEND_EPOLL;
		984
		985	return flags;
		986	}
		987
		988	unsigned int
		989	ev_backend (EV_P)
		990	{
		991	return backend;
		992	}
		993
		994	unsigned int
		995	ev_loop_count (EV_P)
		996	{
		997	return loop_count;
		998	}
		999
		1000	void
		1001	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	io_blocktime = interval;
		1004	}
		1005
		1006	void
		1007	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1008	{
		1009	timeout_blocktime = interval;
		1010	}
		1011
		1012	static void noinline
		1013	loop_init (EV_P_ unsigned int flags)
		1014	{
		1015	if (!backend)
731	{	1016	{
732	#if EV_USE_MONOTONIC	1017	#if EV_USE_MONOTONIC
733	{	1018	{
734	struct timespec ts;	1019	struct timespec ts;
735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1020	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736	have_monotonic = 1;	1021	have_monotonic = 1;
737	}	1022	}
738	#endif	1023	#endif
739		1024
740	rt_now = ev_time ();	1025	ev_rt_now = ev_time ();
741	mn_now = get_clock ();	1026	mn_now = get_clock ();
742	now_floor = mn_now;	1027	now_floor = mn_now;
743	rtmn_diff = rt_now - mn_now;	1028	rtmn_diff = ev_rt_now - mn_now;
744		1029
745	if (methods == EVMETHOD_AUTO)	1030	io_blocktime = 0.;
746	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1031	timeout_blocktime = 0.;
		1032
		1033	/* pid check not overridable via env */
		1034	#ifndef _WIN32
		1035	if (flags & EVFLAG_FORKCHECK)
		1036	curpid = getpid ();
		1037	#endif
		1038
		1039	if (!(flags & EVFLAG_NOENV)
		1040	&& !enable_secure ()
		1041	&& getenv ("LIBEV_FLAGS"))
747	methods = atoi (getenv ("LIBEV_METHODS"));	1042	flags = atoi (getenv ("LIBEV_FLAGS"));
748	else
749	methods = EVMETHOD_ANY;
750		1043
751	method = 0;	1044	if (!(flags & 0x0000ffffUL))
		1045	flags |= ev_recommended_backends ();
		1046
		1047	backend = 0;
		1048	backend_fd = -1;
752	#if EV_USE_WIN32	1049	#if EV_USE_INOTIFY
753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1050	fs_fd = -2;
		1051	#endif
		1052
		1053	#if EV_USE_PORT
		1054	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
754	#endif	1055	#endif
755	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1057	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757	#endif	1058	#endif
758	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1060	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760	#endif	1061	#endif
761	#if EV_USE_POLL	1062	#if EV_USE_POLL
762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1063	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763	#endif	1064	#endif
764	#if EV_USE_SELECT	1065	#if EV_USE_SELECT
765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1066	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766	#endif	1067	#endif
767		1068
768	ev_init (&sigev, sigcb);	1069	ev_init (&sigev, sigcb);
769	ev_set_priority (&sigev, EV_MAXPRI);	1070	ev_set_priority (&sigev, EV_MAXPRI);
770	}	1071	}
771	}	1072	}
772		1073
773	void	1074	static void noinline
774	loop_destroy (EV_P)	1075	loop_destroy (EV_P)
775	{	1076	{
776	int i;	1077	int i;
777		1078
778	#if EV_USE_WIN32	1079	#if EV_USE_INOTIFY
779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1080	if (fs_fd >= 0)
		1081	close (fs_fd);
		1082	#endif
		1083
		1084	if (backend_fd >= 0)
		1085	close (backend_fd);
		1086
		1087	#if EV_USE_PORT
		1088	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780	#endif	1089	#endif
781	#if EV_USE_KQUEUE	1090	#if EV_USE_KQUEUE
782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1091	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783	#endif	1092	#endif
784	#if EV_USE_EPOLL	1093	#if EV_USE_EPOLL
785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1094	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786	#endif	1095	#endif
787	#if EV_USE_POLL	1096	#if EV_USE_POLL
788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1097	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789	#endif	1098	#endif
790	#if EV_USE_SELECT	1099	#if EV_USE_SELECT
791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1100	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792	#endif	1101	#endif
793		1102
794	for (i = NUMPRI; i--; )	1103	for (i = NUMPRI; i--; )
		1104	{
795	array_free (pending, [i]);	1105	array_free (pending, [i]);
		1106	#if EV_IDLE_ENABLE
		1107	array_free (idle, [i]);
		1108	#endif
		1109	}
		1110
		1111	ev_free (anfds); anfdmax = 0;
796		1112
797	/* have to use the microsoft-never-gets-it-right macro */	1113	/* have to use the microsoft-never-gets-it-right macro */
798	array_free_microshit (fdchange);	1114	array_free (fdchange, EMPTY);
799	array_free_microshit (timer);	1115	array_free (timer, EMPTY);
800	array_free_microshit (periodic);	1116	#if EV_PERIODIC_ENABLE
801	array_free_microshit (idle);	1117	array_free (periodic, EMPTY);
802	array_free_microshit (prepare);	1118	#endif
803	array_free_microshit (check);	1119	#if EV_FORK_ENABLE
		1120	array_free (fork, EMPTY);
		1121	#endif
		1122	array_free (prepare, EMPTY);
		1123	array_free (check, EMPTY);
804		1124
805	method = 0;	1125	backend = 0;
806	}	1126	}
807		1127
808	static void	1128	void inline_size infy_fork (EV_P);
		1129
		1130	void inline_size
809	loop_fork (EV_P)	1131	loop_fork (EV_P)
810	{	1132	{
		1133	#if EV_USE_PORT
		1134	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1135	#endif
		1136	#if EV_USE_KQUEUE
		1137	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1138	#endif
811	#if EV_USE_EPOLL	1139	#if EV_USE_EPOLL
812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1140	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813	#endif	1141	#endif
814	#if EV_USE_KQUEUE	1142	#if EV_USE_INOTIFY
815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1143	infy_fork (EV_A);
816	#endif	1144	#endif
817		1145
818	if (ev_is_active (&sigev))	1146	if (ev_is_active (&sigev))
819	{	1147	{
820	/* default loop */	1148	/* default loop */
…		…
833	postfork = 0;	1161	postfork = 0;
834	}	1162	}
835		1163
836	#if EV_MULTIPLICITY	1164	#if EV_MULTIPLICITY
837	struct ev_loop *	1165	struct ev_loop *
838	ev_loop_new (int methods)	1166	ev_loop_new (unsigned int flags)
839	{	1167	{
840	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1168	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841		1169
842	memset (loop, 0, sizeof (struct ev_loop));	1170	memset (loop, 0, sizeof (struct ev_loop));
843		1171
844	loop_init (EV_A_ methods);	1172	loop_init (EV_A_ flags);
845		1173
846	if (ev_method (EV_A))	1174	if (ev_backend (EV_A))
847	return loop;	1175	return loop;
848		1176
849	return 0;	1177	return 0;
850	}	1178	}
851		1179
…		…
864		1192
865	#endif	1193	#endif
866		1194
867	#if EV_MULTIPLICITY	1195	#if EV_MULTIPLICITY
868	struct ev_loop *	1196	struct ev_loop *
		1197	ev_default_loop_init (unsigned int flags)
869	#else	1198	#else
870	int	1199	int
		1200	ev_default_loop (unsigned int flags)
871	#endif	1201	#endif
872	ev_default_loop (int methods)
873	{	1202	{
874	if (sigpipe [0] == sigpipe [1])	1203	if (sigpipe [0] == sigpipe [1])
875	if (pipe (sigpipe))	1204	if (pipe (sigpipe))
876	return 0;	1205	return 0;
877		1206
878	if (!default_loop)	1207	if (!ev_default_loop_ptr)
879	{	1208	{
880	#if EV_MULTIPLICITY	1209	#if EV_MULTIPLICITY
881	struct ev_loop *loop = default_loop = &default_loop_struct;	1210	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882	#else	1211	#else
883	default_loop = 1;	1212	ev_default_loop_ptr = 1;
884	#endif	1213	#endif
885		1214
886	loop_init (EV_A_ methods);	1215	loop_init (EV_A_ flags);
887		1216
888	if (ev_method (EV_A))	1217	if (ev_backend (EV_A))
889	{	1218	{
890	siginit (EV_A);	1219	siginit (EV_A);
891		1220
892	#ifndef WIN32	1221	#ifndef _WIN32
893	ev_signal_init (&childev, childcb, SIGCHLD);	1222	ev_signal_init (&childev, childcb, SIGCHLD);
894	ev_set_priority (&childev, EV_MAXPRI);	1223	ev_set_priority (&childev, EV_MAXPRI);
895	ev_signal_start (EV_A_ &childev);	1224	ev_signal_start (EV_A_ &childev);
896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1225	ev_unref (EV_A); /* child watcher should not keep loop alive */
897	#endif	1226	#endif
898	}	1227	}
899	else	1228	else
900	default_loop = 0;	1229	ev_default_loop_ptr = 0;
901	}	1230	}
902		1231
903	return default_loop;	1232	return ev_default_loop_ptr;
904	}	1233	}
905		1234
906	void	1235	void
907	ev_default_destroy (void)	1236	ev_default_destroy (void)
908	{	1237	{
909	#if EV_MULTIPLICITY	1238	#if EV_MULTIPLICITY
910	struct ev_loop *loop = default_loop;	1239	struct ev_loop *loop = ev_default_loop_ptr;
911	#endif	1240	#endif
912		1241
913	#ifndef WIN32	1242	#ifndef _WIN32
914	ev_ref (EV_A); /* child watcher */	1243	ev_ref (EV_A); /* child watcher */
915	ev_signal_stop (EV_A_ &childev);	1244	ev_signal_stop (EV_A_ &childev);
916	#endif	1245	#endif
917		1246
918	ev_ref (EV_A); /* signal watcher */	1247	ev_ref (EV_A); /* signal watcher */
…		…
926		1255
927	void	1256	void
928	ev_default_fork (void)	1257	ev_default_fork (void)
929	{	1258	{
930	#if EV_MULTIPLICITY	1259	#if EV_MULTIPLICITY
931	struct ev_loop *loop = default_loop;	1260	struct ev_loop *loop = ev_default_loop_ptr;
932	#endif	1261	#endif
933		1262
934	if (method)	1263	if (backend)
935	postfork = 1;	1264	postfork = 1;
936	}	1265	}
937		1266
938	/*****************************************************************************/	1267	/*****************************************************************************/
939		1268
940	static int	1269	void
941	any_pending (EV_P)	1270	ev_invoke (EV_P_ void *w, int revents)
942	{	1271	{
943	int pri;	1272	EV_CB_INVOKE ((W)w, revents);
944
945	for (pri = NUMPRI; pri--; )
946	if (pendingcnt [pri])
947	return 1;
948
949	return 0;
950	}	1273	}
951		1274
952	static void	1275	void inline_speed
953	call_pending (EV_P)	1276	call_pending (EV_P)
954	{	1277	{
955	int pri;	1278	int pri;
956		1279
957	for (pri = NUMPRI; pri--; )	1280	for (pri = NUMPRI; pri--; )
958	while (pendingcnt [pri])	1281	while (pendingcnt [pri])
959	{	1282	{
960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1283	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961		1284
962	if (p->w)	1285	if (expect_true (p->w))
963	{	1286	{
		1287	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1288
964	p->w->pending = 0;	1289	p->w->pending = 0;
965	EV_CB_INVOKE (p->w, p->events);	1290	EV_CB_INVOKE (p->w, p->events);
966	}	1291	}
967	}	1292	}
968	}	1293	}
969		1294
970	static void	1295	void inline_size
971	timers_reify (EV_P)	1296	timers_reify (EV_P)
972	{	1297	{
973	while (timercnt && ((WT)timers [0])->at <= mn_now)	1298	while (timercnt && ((WT)timers [0])->at <= mn_now)
974	{	1299	{
975	struct ev_timer *w = timers [0];	1300	ev_timer *w = (ev_timer *)timers [0];
976		1301
977	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1302	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978		1303
979	/* first reschedule or stop timer */	1304	/* first reschedule or stop timer */
980	if (w->repeat)	1305	if (w->repeat)
981	{	1306	{
982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1307	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1308
983	((WT)w)->at = mn_now + w->repeat;	1309	((WT)w)->at += w->repeat;
		1310	if (((WT)w)->at < mn_now)
		1311	((WT)w)->at = mn_now;
		1312
984	downheap ((WT *)timers, timercnt, 0);	1313	downheap (timers, timercnt, 0);
985	}	1314	}
986	else	1315	else
987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1316	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988		1317
989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1318	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990	}	1319	}
991	}	1320	}
992		1321
993	static void	1322	#if EV_PERIODIC_ENABLE
		1323	void inline_size
994	periodics_reify (EV_P)	1324	periodics_reify (EV_P)
995	{	1325	{
996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1326	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997	{	1327	{
998	struct ev_periodic *w = periodics [0];	1328	ev_periodic *w = (ev_periodic *)periodics [0];
999		1329
1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1330	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001		1331
1002	/* first reschedule or stop timer */	1332	/* first reschedule or stop timer */
1003	if (w->reschedule_cb)	1333	if (w->reschedule_cb)
1004	{	1334	{
1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1335	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1006
1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1336	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008	downheap ((WT *)periodics, periodiccnt, 0);	1337	downheap (periodics, periodiccnt, 0);
1009	}	1338	}
1010	else if (w->interval)	1339	else if (w->interval)
1011	{	1340	{
1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1341	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1342	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1343	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014	downheap ((WT *)periodics, periodiccnt, 0);	1344	downheap (periodics, periodiccnt, 0);
1015	}	1345	}
1016	else	1346	else
1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1347	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1348
1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1349	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020	}	1350	}
1021	}	1351	}
1022		1352
1023	static void	1353	static void noinline
1024	periodics_reschedule (EV_P)	1354	periodics_reschedule (EV_P)
1025	{	1355	{
1026	int i;	1356	int i;
1027		1357
1028	/* adjust periodics after time jump */	1358	/* adjust periodics after time jump */
1029	for (i = 0; i < periodiccnt; ++i)	1359	for (i = 0; i < periodiccnt; ++i)
1030	{	1360	{
1031	struct ev_periodic *w = periodics [i];	1361	ev_periodic *w = (ev_periodic *)periodics [i];
1032		1362
1033	if (w->reschedule_cb)	1363	if (w->reschedule_cb)
1034	((WT)w)->at = w->reschedule_cb (w, rt_now);	1364	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035	else if (w->interval)	1365	else if (w->interval)
1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1366	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1037	}	1367	}
1038		1368
1039	/* now rebuild the heap */	1369	/* now rebuild the heap */
1040	for (i = periodiccnt >> 1; i--; )	1370	for (i = periodiccnt >> 1; i--; )
1041	downheap ((WT *)periodics, periodiccnt, i);	1371	downheap (periodics, periodiccnt, i);
1042	}	1372	}
		1373	#endif
1043		1374
1044	inline int	1375	#if EV_IDLE_ENABLE
1045	time_update_monotonic (EV_P)	1376	void inline_size
		1377	idle_reify (EV_P)
1046	{	1378	{
1047	mn_now = get_clock ();	1379	if (expect_false (idleall))
1048
1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050	{
1051	rt_now = rtmn_diff + mn_now;
1052	return 0;
1053	}	1380	{
1054	else	1381	int pri;
		1382
		1383	for (pri = NUMPRI; pri--; )
		1384	{
		1385	if (pendingcnt [pri])
		1386	break;
		1387
		1388	if (idlecnt [pri])
		1389	{
		1390	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1391	break;
		1392	}
		1393	}
1055	{	1394	}
1056	now_floor = mn_now;
1057	rt_now = ev_time ();
1058	return 1;
1059	}
1060	}	1395	}
		1396	#endif
1061		1397
1062	static void	1398	void inline_speed
1063	time_update (EV_P)	1399	time_update (EV_P_ ev_tstamp max_block)
1064	{	1400	{
1065	int i;	1401	int i;
1066		1402
1067	#if EV_USE_MONOTONIC	1403	#if EV_USE_MONOTONIC
1068	if (expect_true (have_monotonic))	1404	if (expect_true (have_monotonic))
1069	{	1405	{
1070	if (time_update_monotonic (EV_A))	1406	ev_tstamp odiff = rtmn_diff;
		1407
		1408	mn_now = get_clock ();
		1409
		1410	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1411	/* interpolate in the meantime */
		1412	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071	{	1413	{
1072	ev_tstamp odiff = rtmn_diff;	1414	ev_rt_now = rtmn_diff + mn_now;
		1415	return;
		1416	}
1073		1417
		1418	now_floor = mn_now;
		1419	ev_rt_now = ev_time ();
		1420
1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1421	/* loop a few times, before making important decisions.
		1422	* on the choice of "4": one iteration isn't enough,
		1423	* in case we get preempted during the calls to
		1424	* ev_time and get_clock. a second call is almost guaranteed
		1425	* to succeed in that case, though. and looping a few more times
		1426	* doesn't hurt either as we only do this on time-jumps or
		1427	* in the unlikely event of having been preempted here.
		1428	*/
		1429	for (i = 4; --i; )
1075	{	1430	{
1076	rtmn_diff = rt_now - mn_now;	1431	rtmn_diff = ev_rt_now - mn_now;
1077		1432
1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1433	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079	return; /* all is well */	1434	return; /* all is well */
1080		1435
1081	rt_now = ev_time ();	1436	ev_rt_now = ev_time ();
1082	mn_now = get_clock ();	1437	mn_now = get_clock ();
1083	now_floor = mn_now;	1438	now_floor = mn_now;
1084	}	1439	}
1085		1440
		1441	# if EV_PERIODIC_ENABLE
		1442	periodics_reschedule (EV_A);
		1443	# endif
		1444	/* no timer adjustment, as the monotonic clock doesn't jump */
		1445	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1446	}
		1447	else
		1448	#endif
		1449	{
		1450	ev_rt_now = ev_time ();
		1451
		1452	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1453	{
		1454	#if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1087	/* no timer adjustment, as the monotonic clock doesn't jump */	1456	#endif
1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1457	/* adjust timers. this is easy, as the offset is the same for all of them */
		1458	for (i = 0; i < timercnt; ++i)
		1459	((WT)timers [i])->at += ev_rt_now - mn_now;
1089	}	1460	}
1090	}
1091	else
1092	#endif
1093	{
1094	rt_now = ev_time ();
1095		1461
1096	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097	{
1098	periodics_reschedule (EV_A);
1099
1100	/* adjust timers. this is easy, as the offset is the same for all */
1101	for (i = 0; i < timercnt; ++i)
1102	((WT)timers [i])->at += rt_now - mn_now;
1103	}
1104
1105	mn_now = rt_now;	1462	mn_now = ev_rt_now;
1106	}	1463	}
1107	}	1464	}
1108		1465
1109	void	1466	void
1110	ev_ref (EV_P)	1467	ev_ref (EV_P)
…		…
1121	static int loop_done;	1478	static int loop_done;
1122		1479
1123	void	1480	void
1124	ev_loop (EV_P_ int flags)	1481	ev_loop (EV_P_ int flags)
1125	{	1482	{
1126	double block;
1127	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1483	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1484	? EVUNLOOP_ONE
		1485	: EVUNLOOP_CANCEL;
		1486
		1487	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1128		1488
1129	do	1489	do
1130	{	1490	{
		1491	#ifndef _WIN32
		1492	if (expect_false (curpid)) /* penalise the forking check even more */
		1493	if (expect_false (getpid () != curpid))
		1494	{
		1495	curpid = getpid ();
		1496	postfork = 1;
		1497	}
		1498	#endif
		1499
		1500	#if EV_FORK_ENABLE
		1501	/* we might have forked, so queue fork handlers */
		1502	if (expect_false (postfork))
		1503	if (forkcnt)
		1504	{
		1505	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1506	call_pending (EV_A);
		1507	}
		1508	#endif
		1509
1131	/* queue check watchers (and execute them) */	1510	/* queue prepare watchers (and execute them) */
1132	if (expect_false (preparecnt))	1511	if (expect_false (preparecnt))
1133	{	1512	{
1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1513	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135	call_pending (EV_A);	1514	call_pending (EV_A);
1136	}	1515	}
1137		1516
		1517	if (expect_false (!activecnt))
		1518	break;
		1519
1138	/* we might have forked, so reify kernel state if necessary */	1520	/* we might have forked, so reify kernel state if necessary */
1139	if (expect_false (postfork))	1521	if (expect_false (postfork))
1140	loop_fork (EV_A);	1522	loop_fork (EV_A);
1141		1523
1142	/* update fd-related kernel structures */	1524	/* update fd-related kernel structures */
1143	fd_reify (EV_A);	1525	fd_reify (EV_A);
1144		1526
1145	/* calculate blocking time */	1527	/* calculate blocking time */
		1528	{
		1529	ev_tstamp waittime = 0.;
		1530	ev_tstamp sleeptime = 0.;
1146		1531
1147	/* we only need this for !monotonic clock or timers, but as we basically	1532	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1148	always have timers, we just calculate it always */
1149	#if EV_USE_MONOTONIC
1150	if (expect_true (have_monotonic))
1151	time_update_monotonic (EV_A);
1152	else
1153	#endif
1154	{	1533	{
1155	rt_now = ev_time ();	1534	/* update time to cancel out callback processing overhead */
1156	mn_now = rt_now;	1535	time_update (EV_A_ 1e100);
1157	}
1158		1536
1159	if (flags & EVLOOP_NONBLOCK || idlecnt)
1160	block = 0.;
1161	else
1162	{
1163	block = MAX_BLOCKTIME;	1537	waittime = MAX_BLOCKTIME;
1164		1538
1165	if (timercnt)	1539	if (timercnt)
1166	{	1540	{
1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1541	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168	if (block > to) block = to;	1542	if (waittime > to) waittime = to;
1169	}	1543	}
1170		1544
		1545	#if EV_PERIODIC_ENABLE
1171	if (periodiccnt)	1546	if (periodiccnt)
1172	{	1547	{
1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1548	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174	if (block > to) block = to;	1549	if (waittime > to) waittime = to;
1175	}	1550	}
		1551	#endif
1176		1552
1177	if (block < 0.) block = 0.;	1553	if (expect_false (waittime < timeout_blocktime))
		1554	waittime = timeout_blocktime;
		1555
		1556	sleeptime = waittime - backend_fudge;
		1557
		1558	if (expect_true (sleeptime > io_blocktime))
		1559	sleeptime = io_blocktime;
		1560
		1561	if (sleeptime)
		1562	{
		1563	ev_sleep (sleeptime);
		1564	waittime -= sleeptime;
		1565	}
1178	}	1566	}
1179		1567
1180	method_poll (EV_A_ block);	1568	++loop_count;
		1569	backend_poll (EV_A_ waittime);
1181		1570
1182	/* update rt_now, do magic */	1571	/* update ev_rt_now, do magic */
1183	time_update (EV_A);	1572	time_update (EV_A_ waittime + sleeptime);
		1573	}
1184		1574
1185	/* queue pending timers and reschedule them */	1575	/* queue pending timers and reschedule them */
1186	timers_reify (EV_A); /* relative timers called last */	1576	timers_reify (EV_A); /* relative timers called last */
		1577	#if EV_PERIODIC_ENABLE
1187	periodics_reify (EV_A); /* absolute timers called first */	1578	periodics_reify (EV_A); /* absolute timers called first */
		1579	#endif
1188		1580
		1581	#if EV_IDLE_ENABLE
1189	/* queue idle watchers unless io or timers are pending */	1582	/* queue idle watchers unless other events are pending */
1190	if (idlecnt && !any_pending (EV_A))	1583	idle_reify (EV_A);
1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1584	#endif
1192		1585
1193	/* queue check watchers, to be executed first */	1586	/* queue check watchers, to be executed first */
1194	if (checkcnt)	1587	if (expect_false (checkcnt))
1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1588	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196		1589
1197	call_pending (EV_A);	1590	call_pending (EV_A);
		1591
1198	}	1592	}
1199	while (activecnt && !loop_done);	1593	while (expect_true (activecnt && !loop_done));
1200		1594
1201	if (loop_done != 2)	1595	if (loop_done == EVUNLOOP_ONE)
1202	loop_done = 0;	1596	loop_done = EVUNLOOP_CANCEL;
1203	}	1597	}
1204		1598
1205	void	1599	void
1206	ev_unloop (EV_P_ int how)	1600	ev_unloop (EV_P_ int how)
1207	{	1601	{
1208	loop_done = how;	1602	loop_done = how;
1209	}	1603	}
1210		1604
1211	/*****************************************************************************/	1605	/*****************************************************************************/
1212		1606
1213	inline void	1607	void inline_size
1214	wlist_add (WL *head, WL elem)	1608	wlist_add (WL *head, WL elem)
1215	{	1609	{
1216	elem->next = *head;	1610	elem->next = *head;
1217	*head = elem;	1611	*head = elem;
1218	}	1612	}
1219		1613
1220	inline void	1614	void inline_size
1221	wlist_del (WL *head, WL elem)	1615	wlist_del (WL *head, WL elem)
1222	{	1616	{
1223	while (*head)	1617	while (*head)
1224	{	1618	{
1225	if (*head == elem)	1619	if (*head == elem)
…		…
1230		1624
1231	head = &(*head)->next;	1625	head = &(*head)->next;
1232	}	1626	}
1233	}	1627	}
1234		1628
1235	inline void	1629	void inline_speed
1236	ev_clear_pending (EV_P_ W w)	1630	clear_pending (EV_P_ W w)
1237	{	1631	{
1238	if (w->pending)	1632	if (w->pending)
1239	{	1633	{
1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1634	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241	w->pending = 0;	1635	w->pending = 0;
1242	}	1636	}
1243	}	1637	}
1244		1638
1245	inline void	1639	int
		1640	ev_clear_pending (EV_P_ void *w)
		1641	{
		1642	W w_ = (W)w;
		1643	int pending = w_->pending;
		1644
		1645	if (expect_true (pending))
		1646	{
		1647	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1648	w_->pending = 0;
		1649	p->w = 0;
		1650	return p->events;
		1651	}
		1652	else
		1653	return 0;
		1654	}
		1655
		1656	void inline_size
		1657	pri_adjust (EV_P_ W w)
		1658	{
		1659	int pri = w->priority;
		1660	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1661	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1662	w->priority = pri;
		1663	}
		1664
		1665	void inline_speed
1246	ev_start (EV_P_ W w, int active)	1666	ev_start (EV_P_ W w, int active)
1247	{	1667	{
1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1668	pri_adjust (EV_A_ w);
1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251	w->active = active;	1669	w->active = active;
1252	ev_ref (EV_A);	1670	ev_ref (EV_A);
1253	}	1671	}
1254		1672
1255	inline void	1673	void inline_size
1256	ev_stop (EV_P_ W w)	1674	ev_stop (EV_P_ W w)
1257	{	1675	{
1258	ev_unref (EV_A);	1676	ev_unref (EV_A);
1259	w->active = 0;	1677	w->active = 0;
1260	}	1678	}
1261		1679
1262	/*****************************************************************************/	1680	/*****************************************************************************/
1263		1681
1264	void	1682	void noinline
1265	ev_io_start (EV_P_ struct ev_io *w)	1683	ev_io_start (EV_P_ ev_io *w)
1266	{	1684	{
1267	int fd = w->fd;	1685	int fd = w->fd;
1268		1686
1269	if (ev_is_active (w))	1687	if (expect_false (ev_is_active (w)))
1270	return;	1688	return;
1271		1689
1272	assert (("ev_io_start called with negative fd", fd >= 0));	1690	assert (("ev_io_start called with negative fd", fd >= 0));
1273		1691
1274	ev_start (EV_A_ (W)w, 1);	1692	ev_start (EV_A_ (W)w, 1);
1275	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1693	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1276	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1694	wlist_add (&anfds[fd].head, (WL)w);
1277		1695
1278	fd_change (EV_A_ fd);	1696	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1697	w->events &= ~EV_IOFDSET;
1279	}	1698	}
1280		1699
1281	void	1700	void noinline
1282	ev_io_stop (EV_P_ struct ev_io *w)	1701	ev_io_stop (EV_P_ ev_io *w)
1283	{	1702	{
1284	ev_clear_pending (EV_A_ (W)w);	1703	clear_pending (EV_A_ (W)w);
1285	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1286	return;	1705	return;
1287		1706
		1707	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1708
1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1709	wlist_del (&anfds[w->fd].head, (WL)w);
1289	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1290		1711
1291	fd_change (EV_A_ w->fd);	1712	fd_change (EV_A_ w->fd, 1);
1292	}	1713	}
1293		1714
1294	void	1715	void noinline
1295	ev_timer_start (EV_P_ struct ev_timer *w)	1716	ev_timer_start (EV_P_ ev_timer *w)
		1717	{
		1718	if (expect_false (ev_is_active (w)))
		1719	return;
		1720
		1721	((WT)w)->at += mn_now;
		1722
		1723	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1724
		1725	ev_start (EV_A_ (W)w, ++timercnt);
		1726	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1727	timers [timercnt - 1] = (WT)w;
		1728	upheap (timers, timercnt - 1);
		1729
		1730	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1731	}
		1732
		1733	void noinline
		1734	ev_timer_stop (EV_P_ ev_timer *w)
		1735	{
		1736	clear_pending (EV_A_ (W)w);
		1737	if (expect_false (!ev_is_active (w)))
		1738	return;
		1739
		1740	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1741
		1742	{
		1743	int active = ((W)w)->active;
		1744
		1745	if (expect_true (--active < --timercnt))
		1746	{
		1747	timers [active] = timers [timercnt];
		1748	adjustheap (timers, timercnt, active);
		1749	}
		1750	}
		1751
		1752	((WT)w)->at -= mn_now;
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756
		1757	void noinline
		1758	ev_timer_again (EV_P_ ev_timer *w)
1296	{	1759	{
1297	if (ev_is_active (w))	1760	if (ev_is_active (w))
1298	return;
1299
1300	((WT)w)->at += mn_now;
1301
1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303
1304	ev_start (EV_A_ (W)w, ++timercnt);
1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1306	timers [timercnt - 1] = w;
1307	upheap ((WT *)timers, timercnt - 1);
1308
1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310	}
1311
1312	void
1313	ev_timer_stop (EV_P_ struct ev_timer *w)
1314	{
1315	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))
1317	return;
1318
1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320
1321	if (((W)w)->active < timercnt--)
1322	{
1323	timers [((W)w)->active - 1] = timers [timercnt];
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325	}
1326
1327	((WT)w)->at = w->repeat;
1328
1329	ev_stop (EV_A_ (W)w);
1330	}
1331
1332	void
1333	ev_timer_again (EV_P_ struct ev_timer *w)
1334	{
1335	if (ev_is_active (w))
1336	{	1761	{
1337	if (w->repeat)	1762	if (w->repeat)
		1763	{
		1764	((WT)w)->at = mn_now + w->repeat;
1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1765	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1766	}
1339	else	1767	else
1340	ev_timer_stop (EV_A_ w);	1768	ev_timer_stop (EV_A_ w);
1341	}	1769	}
1342	else if (w->repeat)	1770	else if (w->repeat)
		1771	{
		1772	w->at = w->repeat;
1343	ev_timer_start (EV_A_ w);	1773	ev_timer_start (EV_A_ w);
		1774	}
1344	}	1775	}
1345		1776
1346	void	1777	#if EV_PERIODIC_ENABLE
		1778	void noinline
1347	ev_periodic_start (EV_P_ struct ev_periodic *w)	1779	ev_periodic_start (EV_P_ ev_periodic *w)
1348	{	1780	{
1349	if (ev_is_active (w))	1781	if (expect_false (ev_is_active (w)))
1350	return;	1782	return;
1351		1783
1352	if (w->reschedule_cb)	1784	if (w->reschedule_cb)
1353	((WT)w)->at = w->reschedule_cb (w, rt_now);	1785	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354	else if (w->interval)	1786	else if (w->interval)
1355	{	1787	{
1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1788	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357	/* this formula differs from the one in periodic_reify because we do not always round up */	1789	/* this formula differs from the one in periodic_reify because we do not always round up */
1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1790	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1359	}	1791	}
		1792	else
		1793	((WT)w)->at = w->offset;
1360		1794
1361	ev_start (EV_A_ (W)w, ++periodiccnt);	1795	ev_start (EV_A_ (W)w, ++periodiccnt);
1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1796	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1363	periodics [periodiccnt - 1] = w;	1797	periodics [periodiccnt - 1] = (WT)w;
1364	upheap ((WT *)periodics, periodiccnt - 1);	1798	upheap (periodics, periodiccnt - 1);
1365		1799
1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1800	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1367	}	1801	}
1368		1802
1369	void	1803	void noinline
1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1804	ev_periodic_stop (EV_P_ ev_periodic *w)
1371	{	1805	{
1372	ev_clear_pending (EV_A_ (W)w);	1806	clear_pending (EV_A_ (W)w);
1373	if (!ev_is_active (w))	1807	if (expect_false (!ev_is_active (w)))
1374	return;	1808	return;
1375		1809
1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1810	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1377		1811
1378	if (((W)w)->active < periodiccnt--)	1812	{
		1813	int active = ((W)w)->active;
		1814
		1815	if (expect_true (--active < --periodiccnt))
1379	{	1816	{
1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1817	periodics [active] = periodics [periodiccnt];
1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1818	adjustheap (periodics, periodiccnt, active);
1382	}	1819	}
		1820	}
1383		1821
1384	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1385	}	1823	}
1386		1824
1387	void	1825	void noinline
1388	ev_periodic_again (EV_P_ struct ev_periodic *w)	1826	ev_periodic_again (EV_P_ ev_periodic *w)
1389	{	1827	{
1390	/* TODO: use adjustheap and recalculation */	1828	/* TODO: use adjustheap and recalculation */
1391	ev_periodic_stop (EV_A_ w);	1829	ev_periodic_stop (EV_A_ w);
1392	ev_periodic_start (EV_A_ w);	1830	ev_periodic_start (EV_A_ w);
1393	}	1831	}
1394		1832	#endif
1395	void
1396	ev_idle_start (EV_P_ struct ev_idle *w)
1397	{
1398	if (ev_is_active (w))
1399	return;
1400
1401	ev_start (EV_A_ (W)w, ++idlecnt);
1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403	idles [idlecnt - 1] = w;
1404	}
1405
1406	void
1407	ev_idle_stop (EV_P_ struct ev_idle *w)
1408	{
1409	ev_clear_pending (EV_A_ (W)w);
1410	if (ev_is_active (w))
1411	return;
1412
1413	idles [((W)w)->active - 1] = idles [--idlecnt];
1414	ev_stop (EV_A_ (W)w);
1415	}
1416
1417	void
1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
1419	{
1420	if (ev_is_active (w))
1421	return;
1422
1423	ev_start (EV_A_ (W)w, ++preparecnt);
1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425	prepares [preparecnt - 1] = w;
1426	}
1427
1428	void
1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430	{
1431	ev_clear_pending (EV_A_ (W)w);
1432	if (ev_is_active (w))
1433	return;
1434
1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436	ev_stop (EV_A_ (W)w);
1437	}
1438
1439	void
1440	ev_check_start (EV_P_ struct ev_check *w)
1441	{
1442	if (ev_is_active (w))
1443	return;
1444
1445	ev_start (EV_A_ (W)w, ++checkcnt);
1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447	checks [checkcnt - 1] = w;
1448	}
1449
1450	void
1451	ev_check_stop (EV_P_ struct ev_check *w)
1452	{
1453	ev_clear_pending (EV_A_ (W)w);
1454	if (ev_is_active (w))
1455	return;
1456
1457	checks [((W)w)->active - 1] = checks [--checkcnt];
1458	ev_stop (EV_A_ (W)w);
1459	}
1460		1833
1461	#ifndef SA_RESTART	1834	#ifndef SA_RESTART
1462	# define SA_RESTART 0	1835	# define SA_RESTART 0
1463	#endif	1836	#endif
1464		1837
1465	void	1838	void noinline
1466	ev_signal_start (EV_P_ struct ev_signal *w)	1839	ev_signal_start (EV_P_ ev_signal *w)
1467	{	1840	{
1468	#if EV_MULTIPLICITY	1841	#if EV_MULTIPLICITY
1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1842	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470	#endif	1843	#endif
1471	if (ev_is_active (w))	1844	if (expect_false (ev_is_active (w)))
1472	return;	1845	return;
1473		1846
1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1847	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475		1848
		1849	{
		1850	#ifndef _WIN32
		1851	sigset_t full, prev;
		1852	sigfillset (&full);
		1853	sigprocmask (SIG_SETMASK, &full, &prev);
		1854	#endif
		1855
		1856	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1857
		1858	#ifndef _WIN32
		1859	sigprocmask (SIG_SETMASK, &prev, 0);
		1860	#endif
		1861	}
		1862
1476	ev_start (EV_A_ (W)w, 1);	1863	ev_start (EV_A_ (W)w, 1);
1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1864	wlist_add (&signals [w->signum - 1].head, (WL)w);
1479		1865
1480	if (!((WL)w)->next)	1866	if (!((WL)w)->next)
1481	{	1867	{
1482	#if WIN32	1868	#if _WIN32
1483	signal (w->signum, sighandler);	1869	signal (w->signum, sighandler);
1484	#else	1870	#else
1485	struct sigaction sa;	1871	struct sigaction sa;
1486	sa.sa_handler = sighandler;	1872	sa.sa_handler = sighandler;
1487	sigfillset (&sa.sa_mask);	1873	sigfillset (&sa.sa_mask);
…		…
1489	sigaction (w->signum, &sa, 0);	1875	sigaction (w->signum, &sa, 0);
1490	#endif	1876	#endif
1491	}	1877	}
1492	}	1878	}
1493		1879
1494	void	1880	void noinline
1495	ev_signal_stop (EV_P_ struct ev_signal *w)	1881	ev_signal_stop (EV_P_ ev_signal *w)
1496	{	1882	{
1497	ev_clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1498	if (!ev_is_active (w))	1884	if (expect_false (!ev_is_active (w)))
1499	return;	1885	return;
1500		1886
1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1887	wlist_del (&signals [w->signum - 1].head, (WL)w);
1502	ev_stop (EV_A_ (W)w);	1888	ev_stop (EV_A_ (W)w);
1503		1889
1504	if (!signals [w->signum - 1].head)	1890	if (!signals [w->signum - 1].head)
1505	signal (w->signum, SIG_DFL);	1891	signal (w->signum, SIG_DFL);
1506	}	1892	}
1507		1893
1508	void	1894	void
1509	ev_child_start (EV_P_ struct ev_child *w)	1895	ev_child_start (EV_P_ ev_child *w)
1510	{	1896	{
1511	#if EV_MULTIPLICITY	1897	#if EV_MULTIPLICITY
1512	assert (("child watchers are only supported in the default loop", loop == default_loop));	1898	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513	#endif	1899	#endif
1514	if (ev_is_active (w))	1900	if (expect_false (ev_is_active (w)))
1515	return;	1901	return;
1516		1902
1517	ev_start (EV_A_ (W)w, 1);	1903	ev_start (EV_A_ (W)w, 1);
1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1904	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	}	1905	}
1520		1906
1521	void	1907	void
1522	ev_child_stop (EV_P_ struct ev_child *w)	1908	ev_child_stop (EV_P_ ev_child *w)
1523	{	1909	{
1524	ev_clear_pending (EV_A_ (W)w);	1910	clear_pending (EV_A_ (W)w);
1525	if (ev_is_active (w))	1911	if (expect_false (!ev_is_active (w)))
1526	return;	1912	return;
1527		1913
1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1914	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529	ev_stop (EV_A_ (W)w);	1915	ev_stop (EV_A_ (W)w);
1530	}	1916	}
1531		1917
		1918	#if EV_STAT_ENABLE
		1919
		1920	# ifdef _WIN32
		1921	# undef lstat
		1922	# define lstat(a,b) _stati64 (a,b)
		1923	# endif
		1924
		1925	#define DEF_STAT_INTERVAL 5.0074891
		1926	#define MIN_STAT_INTERVAL 0.1074891
		1927
		1928	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1929
		1930	#if EV_USE_INOTIFY
		1931	# define EV_INOTIFY_BUFSIZE 8192
		1932
		1933	static void noinline
		1934	infy_add (EV_P_ ev_stat *w)
		1935	{
		1936	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);
		1937
		1938	if (w->wd < 0)
		1939	{
		1940	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1941
		1942	/* monitor some parent directory for speedup hints */
		1943	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1944	{
		1945	char path [4096];
		1946	strcpy (path, w->path);
		1947
		1948	do
		1949	{
		1950	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1951	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1952
		1953	char *pend = strrchr (path, '/');
		1954
		1955	if (!pend)
		1956	break; /* whoops, no '/', complain to your admin */
		1957
		1958	*pend = 0;
		1959	w->wd = inotify_add_watch (fs_fd, path, mask);
		1960	}
		1961	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1962	}
		1963	}
		1964	else
		1965	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1966
		1967	if (w->wd >= 0)
		1968	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1969	}
		1970
		1971	static void noinline
		1972	infy_del (EV_P_ ev_stat *w)
		1973	{
		1974	int slot;
		1975	int wd = w->wd;
		1976
		1977	if (wd < 0)
		1978	return;
		1979
		1980	w->wd = -2;
		1981	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1982	wlist_del (&fs_hash [slot].head, (WL)w);
		1983
		1984	/* remove this watcher, if others are watching it, they will rearm */
		1985	inotify_rm_watch (fs_fd, wd);
		1986	}
		1987
		1988	static void noinline
		1989	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1990	{
		1991	if (slot < 0)
		1992	/* overflow, need to check for all hahs slots */
		1993	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1994	infy_wd (EV_A_ slot, wd, ev);
		1995	else
		1996	{
		1997	WL w_;
		1998
		1999	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2000	{
		2001	ev_stat *w = (ev_stat *)w_;
		2002	w_ = w_->next; /* lets us remove this watcher and all before it */
		2003
		2004	if (w->wd == wd || wd == -1)
		2005	{
		2006	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2007	{
		2008	w->wd = -1;
		2009	infy_add (EV_A_ w); /* re-add, no matter what */
		2010	}
		2011
		2012	stat_timer_cb (EV_A_ &w->timer, 0);
		2013	}
		2014	}
		2015	}
		2016	}
		2017
		2018	static void
		2019	infy_cb (EV_P_ ev_io *w, int revents)
		2020	{
		2021	char buf [EV_INOTIFY_BUFSIZE];
		2022	struct inotify_event *ev = (struct inotify_event *)buf;
		2023	int ofs;
		2024	int len = read (fs_fd, buf, sizeof (buf));
		2025
		2026	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2027	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2028	}
		2029
		2030	void inline_size
		2031	infy_init (EV_P)
		2032	{
		2033	if (fs_fd != -2)
		2034	return;
		2035
		2036	fs_fd = inotify_init ();
		2037
		2038	if (fs_fd >= 0)
		2039	{
		2040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2041	ev_set_priority (&fs_w, EV_MAXPRI);
		2042	ev_io_start (EV_A_ &fs_w);
		2043	}
		2044	}
		2045
		2046	void inline_size
		2047	infy_fork (EV_P)
		2048	{
		2049	int slot;
		2050
		2051	if (fs_fd < 0)
		2052	return;
		2053
		2054	close (fs_fd);
		2055	fs_fd = inotify_init ();
		2056
		2057	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2058	{
		2059	WL w_ = fs_hash [slot].head;
		2060	fs_hash [slot].head = 0;
		2061
		2062	while (w_)
		2063	{
		2064	ev_stat *w = (ev_stat *)w_;
		2065	w_ = w_->next; /* lets us add this watcher */
		2066
		2067	w->wd = -1;
		2068
		2069	if (fs_fd >= 0)
		2070	infy_add (EV_A_ w); /* re-add, no matter what */
		2071	else
		2072	ev_timer_start (EV_A_ &w->timer);
		2073	}
		2074
		2075	}
		2076	}
		2077
		2078	#endif
		2079
		2080	void
		2081	ev_stat_stat (EV_P_ ev_stat *w)
		2082	{
		2083	if (lstat (w->path, &w->attr) < 0)
		2084	w->attr.st_nlink = 0;
		2085	else if (!w->attr.st_nlink)
		2086	w->attr.st_nlink = 1;
		2087	}
		2088
		2089	static void noinline
		2090	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2091	{
		2092	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2093
		2094	/* we copy this here each the time so that */
		2095	/* prev has the old value when the callback gets invoked */
		2096	w->prev = w->attr;
		2097	ev_stat_stat (EV_A_ w);
		2098
		2099	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2100	if (
		2101	w->prev.st_dev != w->attr.st_dev
		2102	|| w->prev.st_ino != w->attr.st_ino
		2103	|| w->prev.st_mode != w->attr.st_mode
		2104	|| w->prev.st_nlink != w->attr.st_nlink
		2105	|| w->prev.st_uid != w->attr.st_uid
		2106	|| w->prev.st_gid != w->attr.st_gid
		2107	|| w->prev.st_rdev != w->attr.st_rdev
		2108	|| w->prev.st_size != w->attr.st_size
		2109	|| w->prev.st_atime != w->attr.st_atime
		2110	|| w->prev.st_mtime != w->attr.st_mtime
		2111	|| w->prev.st_ctime != w->attr.st_ctime
		2112	) {
		2113	#if EV_USE_INOTIFY
		2114	infy_del (EV_A_ w);
		2115	infy_add (EV_A_ w);
		2116	ev_stat_stat (EV_A_ w); /* avoid race... */
		2117	#endif
		2118
		2119	ev_feed_event (EV_A_ w, EV_STAT);
		2120	}
		2121	}
		2122
		2123	void
		2124	ev_stat_start (EV_P_ ev_stat *w)
		2125	{
		2126	if (expect_false (ev_is_active (w)))
		2127	return;
		2128
		2129	/* since we use memcmp, we need to clear any padding data etc. */
		2130	memset (&w->prev, 0, sizeof (ev_statdata));
		2131	memset (&w->attr, 0, sizeof (ev_statdata));
		2132
		2133	ev_stat_stat (EV_A_ w);
		2134
		2135	if (w->interval < MIN_STAT_INTERVAL)
		2136	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2137
		2138	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2139	ev_set_priority (&w->timer, ev_priority (w));
		2140
		2141	#if EV_USE_INOTIFY
		2142	infy_init (EV_A);
		2143
		2144	if (fs_fd >= 0)
		2145	infy_add (EV_A_ w);
		2146	else
		2147	#endif
		2148	ev_timer_start (EV_A_ &w->timer);
		2149
		2150	ev_start (EV_A_ (W)w, 1);
		2151	}
		2152
		2153	void
		2154	ev_stat_stop (EV_P_ ev_stat *w)
		2155	{
		2156	clear_pending (EV_A_ (W)w);
		2157	if (expect_false (!ev_is_active (w)))
		2158	return;
		2159
		2160	#if EV_USE_INOTIFY
		2161	infy_del (EV_A_ w);
		2162	#endif
		2163	ev_timer_stop (EV_A_ &w->timer);
		2164
		2165	ev_stop (EV_A_ (W)w);
		2166	}
		2167	#endif
		2168
		2169	#if EV_IDLE_ENABLE
		2170	void
		2171	ev_idle_start (EV_P_ ev_idle *w)
		2172	{
		2173	if (expect_false (ev_is_active (w)))
		2174	return;
		2175
		2176	pri_adjust (EV_A_ (W)w);
		2177
		2178	{
		2179	int active = ++idlecnt [ABSPRI (w)];
		2180
		2181	++idleall;
		2182	ev_start (EV_A_ (W)w, active);
		2183
		2184	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2185	idles [ABSPRI (w)][active - 1] = w;
		2186	}
		2187	}
		2188
		2189	void
		2190	ev_idle_stop (EV_P_ ev_idle *w)
		2191	{
		2192	clear_pending (EV_A_ (W)w);
		2193	if (expect_false (!ev_is_active (w)))
		2194	return;
		2195
		2196	{
		2197	int active = ((W)w)->active;
		2198
		2199	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2200	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2201
		2202	ev_stop (EV_A_ (W)w);
		2203	--idleall;
		2204	}
		2205	}
		2206	#endif
		2207
		2208	void
		2209	ev_prepare_start (EV_P_ ev_prepare *w)
		2210	{
		2211	if (expect_false (ev_is_active (w)))
		2212	return;
		2213
		2214	ev_start (EV_A_ (W)w, ++preparecnt);
		2215	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2216	prepares [preparecnt - 1] = w;
		2217	}
		2218
		2219	void
		2220	ev_prepare_stop (EV_P_ ev_prepare *w)
		2221	{
		2222	clear_pending (EV_A_ (W)w);
		2223	if (expect_false (!ev_is_active (w)))
		2224	return;
		2225
		2226	{
		2227	int active = ((W)w)->active;
		2228	prepares [active - 1] = prepares [--preparecnt];
		2229	((W)prepares [active - 1])->active = active;
		2230	}
		2231
		2232	ev_stop (EV_A_ (W)w);
		2233	}
		2234
		2235	void
		2236	ev_check_start (EV_P_ ev_check *w)
		2237	{
		2238	if (expect_false (ev_is_active (w)))
		2239	return;
		2240
		2241	ev_start (EV_A_ (W)w, ++checkcnt);
		2242	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2243	checks [checkcnt - 1] = w;
		2244	}
		2245
		2246	void
		2247	ev_check_stop (EV_P_ ev_check *w)
		2248	{
		2249	clear_pending (EV_A_ (W)w);
		2250	if (expect_false (!ev_is_active (w)))
		2251	return;
		2252
		2253	{
		2254	int active = ((W)w)->active;
		2255	checks [active - 1] = checks [--checkcnt];
		2256	((W)checks [active - 1])->active = active;
		2257	}
		2258
		2259	ev_stop (EV_A_ (W)w);
		2260	}
		2261
		2262	#if EV_EMBED_ENABLE
		2263	void noinline
		2264	ev_embed_sweep (EV_P_ ev_embed *w)
		2265	{
		2266	ev_loop (w->other, EVLOOP_NONBLOCK);
		2267	}
		2268
		2269	static void
		2270	embed_io_cb (EV_P_ ev_io *io, int revents)
		2271	{
		2272	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2273
		2274	if (ev_cb (w))
		2275	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2276	else
		2277	ev_loop (w->other, EVLOOP_NONBLOCK);
		2278	}
		2279
		2280	static void
		2281	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2282	{
		2283	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2284
		2285	{
		2286	struct ev_loop *loop = w->other;
		2287
		2288	while (fdchangecnt)
		2289	{
		2290	fd_reify (EV_A);
		2291	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2292	}
		2293	}
		2294	}
		2295
		2296	#if 0
		2297	static void
		2298	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2299	{
		2300	ev_idle_stop (EV_A_ idle);
		2301	}
		2302	#endif
		2303
		2304	void
		2305	ev_embed_start (EV_P_ ev_embed *w)
		2306	{
		2307	if (expect_false (ev_is_active (w)))
		2308	return;
		2309
		2310	{
		2311	struct ev_loop *loop = w->other;
		2312	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2313	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2314	}
		2315
		2316	ev_set_priority (&w->io, ev_priority (w));
		2317	ev_io_start (EV_A_ &w->io);
		2318
		2319	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2320	ev_set_priority (&w->prepare, EV_MINPRI);
		2321	ev_prepare_start (EV_A_ &w->prepare);
		2322
		2323	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2324
		2325	ev_start (EV_A_ (W)w, 1);
		2326	}
		2327
		2328	void
		2329	ev_embed_stop (EV_P_ ev_embed *w)
		2330	{
		2331	clear_pending (EV_A_ (W)w);
		2332	if (expect_false (!ev_is_active (w)))
		2333	return;
		2334
		2335	ev_io_stop (EV_A_ &w->io);
		2336	ev_prepare_stop (EV_A_ &w->prepare);
		2337
		2338	ev_stop (EV_A_ (W)w);
		2339	}
		2340	#endif
		2341
		2342	#if EV_FORK_ENABLE
		2343	void
		2344	ev_fork_start (EV_P_ ev_fork *w)
		2345	{
		2346	if (expect_false (ev_is_active (w)))
		2347	return;
		2348
		2349	ev_start (EV_A_ (W)w, ++forkcnt);
		2350	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2351	forks [forkcnt - 1] = w;
		2352	}
		2353
		2354	void
		2355	ev_fork_stop (EV_P_ ev_fork *w)
		2356	{
		2357	clear_pending (EV_A_ (W)w);
		2358	if (expect_false (!ev_is_active (w)))
		2359	return;
		2360
		2361	{
		2362	int active = ((W)w)->active;
		2363	forks [active - 1] = forks [--forkcnt];
		2364	((W)forks [active - 1])->active = active;
		2365	}
		2366
		2367	ev_stop (EV_A_ (W)w);
		2368	}
		2369	#endif
		2370
1532	/*****************************************************************************/	2371	/*****************************************************************************/
1533		2372
1534	struct ev_once	2373	struct ev_once
1535	{	2374	{
1536	struct ev_io io;	2375	ev_io io;
1537	struct ev_timer to;	2376	ev_timer to;
1538	void (*cb)(int revents, void *arg);	2377	void (*cb)(int revents, void *arg);
1539	void *arg;	2378	void *arg;
1540	};	2379	};
1541		2380
1542	static void	2381	static void
…		…
1551		2390
1552	cb (revents, arg);	2391	cb (revents, arg);
1553	}	2392	}
1554		2393
1555	static void	2394	static void
1556	once_cb_io (EV_P_ struct ev_io *w, int revents)	2395	once_cb_io (EV_P_ ev_io *w, int revents)
1557	{	2396	{
1558	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2397	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559	}	2398	}
1560		2399
1561	static void	2400	static void
1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2401	once_cb_to (EV_P_ ev_timer *w, int revents)
1563	{	2402	{
1564	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2403	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565	}	2404	}
1566		2405
1567	void	2406	void
1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2407	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569	{	2408	{
1570	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2409	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571		2410
1572	if (!once)	2411	if (expect_false (!once))
		2412	{
1573	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2413	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574	else	2414	return;
1575	{	2415	}
		2416
1576	once->cb = cb;	2417	once->cb = cb;
1577	once->arg = arg;	2418	once->arg = arg;
1578		2419
1579	ev_init (&once->io, once_cb_io);	2420	ev_init (&once->io, once_cb_io);
1580	if (fd >= 0)	2421	if (fd >= 0)
1581	{	2422	{
1582	ev_io_set (&once->io, fd, events);	2423	ev_io_set (&once->io, fd, events);
1583	ev_io_start (EV_A_ &once->io);	2424	ev_io_start (EV_A_ &once->io);
1584	}	2425	}
1585		2426
1586	ev_init (&once->to, once_cb_to);	2427	ev_init (&once->to, once_cb_to);
1587	if (timeout >= 0.)	2428	if (timeout >= 0.)
1588	{	2429	{
1589	ev_timer_set (&once->to, timeout, 0.);	2430	ev_timer_set (&once->to, timeout, 0.);
1590	ev_timer_start (EV_A_ &once->to);	2431	ev_timer_start (EV_A_ &once->to);
1591	}
1592	}	2432	}
1593	}	2433	}
1594		2434
		2435	#if EV_MULTIPLICITY
		2436	#include "ev_wrap.h"
		2437	#endif
		2438
		2439	#ifdef __cplusplus
		2440	}
		2441	#endif
		2442

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