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Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.196 by root, Sat Dec 22 12:43:28 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	/* 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 */
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		288
		289	#ifdef _WIN32
157	#include "ev_win32.c"	290	# include "ev_win32.c"
		291	#endif
158		292
159	/*****************************************************************************/	293	/*****************************************************************************/
160		294
161	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
162		296
		297	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	299	{
165	syserr_cb = cb;	300	syserr_cb = cb;
166	}	301	}
167		302
168	static void	303	static void noinline
169	syserr (const char *msg)	304	syserr (const char *msg)
170	{	305	{
171	if (!msg)	306	if (!msg)
172	msg = "(libev) system error";	307	msg = "(libev) system error";
173		308
…		…
180	}	315	}
181	}	316	}
182		317
183	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
184		319
		320	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	322	{
187	alloc = cb;	323	alloc = cb;
188	}	324	}
189		325
190	static void *	326	inline_speed void *
191	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
192	{	328	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		330
195	if (!ptr && size)	331	if (!ptr && size)
…		…
209	typedef struct	345	typedef struct
210	{	346	{
211	WL head;	347	WL head;
212	unsigned char events;	348	unsigned char events;
213	unsigned char reify;	349	unsigned char reify;
		350	#if EV_SELECT_IS_WINSOCKET
		351	SOCKET handle;
		352	#endif
214	} ANFD;	353	} ANFD;
215		354
216	typedef struct	355	typedef struct
217	{	356	{
218	W w;	357	W w;
219	int events;	358	int events;
220	} ANPENDING;	359	} ANPENDING;
221		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
		367
222	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
223		369
224	struct ev_loop	370	struct ev_loop
225	{	371	{
		372	ev_tstamp ev_rt_now;
		373	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	374	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	375	#include "ev_vars.h"
228	#undef VAR	376	#undef VAR
229	};	377	};
230	#include "ev_wrap.h"	378	#include "ev_wrap.h"
231		379
232	struct ev_loop default_loop_struct;	380	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	381	struct ev_loop *ev_default_loop_ptr;
234		382
235	#else	383	#else
236		384
		385	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	386	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	387	#include "ev_vars.h"
239	#undef VAR	388	#undef VAR
240		389
241	static int default_loop;	390	static int ev_default_loop_ptr;
242		391
243	#endif	392	#endif
244		393
245	/*****************************************************************************/	394	/*****************************************************************************/
246		395
247	inline ev_tstamp	396	ev_tstamp
248	ev_time (void)	397	ev_time (void)
249	{	398	{
250	#if EV_USE_REALTIME	399	#if EV_USE_REALTIME
251	struct timespec ts;	400	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	401	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	407	#endif
259	}	408	}
260		409
261	inline ev_tstamp	410	ev_tstamp inline_size
262	get_clock (void)	411	get_clock (void)
263	{	412	{
264	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
266	{	415	{
…		…
279	{	428	{
280	return ev_rt_now;	429	return ev_rt_now;
281	}	430	}
282	#endif	431	#endif
283		432
284	#define array_roundsize(type,n) ((n) | 4 & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		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	}
		457
		458	/*****************************************************************************/
		459
		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	}
285		487
286	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
287	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
288	{ \	490	{ \
289	int newcnt = cur; \	491	int ocur_ = (cur); \
290	do \	492	(base) = (type *)array_realloc \
291	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
292	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
293	} \
294	while ((cnt) > newcnt); \
295	\
296	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
297	init (base + cur, newcnt - cur); \
298	cur = newcnt; \
299	}	495	}
300		496
		497	#if 0
301	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
302	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
303	{ \	500	{ \
304	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
305	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
307	}	504	}
308		505	#endif
309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311	#define array_free_microshit(stem) \
312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313		506
314	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
316		509
317	/*****************************************************************************/	510	/*****************************************************************************/
318		511
319	static void	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
320	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
321	{	542	{
322	while (count--)	543	while (count--)
323	{	544	{
324	base->head = 0;	545	base->head = 0;
…		…
327		548
328	++base;	549	++base;
329	}	550	}
330	}	551	}
331		552
332	void	553	void inline_speed
333	ev_feed_event (EV_P_ void *w, int revents)
334	{
335	W w_ = (W)w;
336
337	if (w_->pending)
338	{
339	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
340	return;
341	}
342
343	w_->pending = ++pendingcnt [ABSPRI (w_)];
344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347	}
348
349	static void
350	queue_events (EV_P_ W *events, int eventcnt, int type)
351	{
352	int i;
353
354	for (i = 0; i < eventcnt; ++i)
355	ev_feed_event (EV_A_ events [i], type);
356	}
357
358	inline void
359	fd_event (EV_P_ int fd, int revents)	554	fd_event (EV_P_ int fd, int revents)
360	{	555	{
361	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
362	struct ev_io *w;	557	ev_io *w;
363		558
364	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)
365	{	560	{
366	int ev = w->events & revents;	561	int ev = w->events & revents;
367		562
368	if (ev)	563	if (ev)
369	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
371	}	566	}
372		567
373	void	568	void
374	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
375	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
376	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
377	}	573	}
378		574
379	/*****************************************************************************/	575	void inline_size
380
381	static void
382	fd_reify (EV_P)	576	fd_reify (EV_P)
383	{	577	{
384	int i;	578	int i;
385		579
386	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
387	{	581	{
388	int fd = fdchanges [i];	582	int fd = fdchanges [i];
389	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
390	struct ev_io *w;	584	ev_io *w;
391		585
392	int events = 0;	586	unsigned char events = 0;
393		587
394	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)
395	events |= w->events;	589	events |= (unsigned char)w->events;
396		590
		591	#if EV_SELECT_IS_WINSOCKET
		592	if (events)
		593	{
		594	unsigned long argp;
		595	anfd->handle = _get_osfhandle (fd);
		596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		597	}
		598	#endif
		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
397	anfd->reify = 0;	604	anfd->reify = 0;
398
399	method_modify (EV_A_ fd, anfd->events, events);
400	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
401	}	610	}
402		611
403	fdchangecnt = 0;	612	fdchangecnt = 0;
404	}	613	}
405		614
406	static void	615	void inline_size
407	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
408	{	617	{
409	if (anfds [fd].reify)	618	unsigned char reify = anfds [fd].reify;
410	return;
411
412	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
413		620
		621	if (expect_true (!reify))
		622	{
414	++fdchangecnt;	623	++fdchangecnt;
415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
417	}	627	}
418		628
419	static void	629	void inline_speed
420	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
421	{	631	{
422	struct ev_io *w;	632	ev_io *w;
423		633
424	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
425	{	635	{
426	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
427	ev_feed_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);
428	}	638	}
429	}	639	}
430		640
431	static int	641	int inline_size
432	fd_valid (int fd)	642	fd_valid (int fd)
433	{	643	{
434	#ifdef WIN32	644	#ifdef _WIN32
435	return !!win32_get_osfhandle (fd);	645	return _get_osfhandle (fd) != -1;
436	#else	646	#else
437	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
438	#endif	648	#endif
439	}	649	}
440		650
441	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
442	static void	652	static void noinline
443	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
444	{	654	{
445	int fd;	655	int fd;
446		656
447	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
449	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
450	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
451	}	661	}
452		662
453	/* 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 */
454	static void	664	static void noinline
455	fd_enomem (EV_P)	665	fd_enomem (EV_P)
456	{	666	{
457	int fd;	667	int fd;
458		668
459	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
462	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
463	return;	673	return;
464	}	674	}
465	}	675	}
466		676
467	/* usually 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 */
468	static void	678	static void noinline
469	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
470	{	680	{
471	int fd;	681	int fd;
472		682
473	/* this should be highly optimised to not do anything but set a flag */
474	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
475	if (anfds [fd].events)	684	if (anfds [fd].events)
476	{	685	{
477	anfds [fd].events = 0;	686	anfds [fd].events = 0;
478	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
479	}	688	}
480	}	689	}
481		690
482	/*****************************************************************************/	691	/*****************************************************************************/
483		692
484	static void	693	void inline_speed
485	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
486	{	695	{
487	WT w = heap [k];	696	WT w = heap [k];
488		697
489	while (k && heap [k >> 1]->at > w->at)	698	while (k)
490	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
491	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
492	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
493	k >>= 1;	707	k = p;
494	}	708	}
495		709
496	heap [k] = w;	710	heap [k] = w;
497	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
498
499	}	712	}
500		713
501	static void	714	void inline_speed
502	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
503	{	716	{
504	WT w = heap [k];	717	WT w = heap [k];
505		718
506	while (k < (N >> 1))	719	for (;;)
507	{	720	{
508	int j = k << 1;	721	int c = (k << 1) + 1;
509		722
510	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
511	++j;
512
513	if (w->at <= heap [j]->at)
514	break;	724	break;
515		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
516	heap [k] = heap [j];	732	heap [k] = heap [c];
517	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
518	k = j;	735	k = c;
519	}	736	}
520		737
521	heap [k] = w;	738	heap [k] = w;
522	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
523	}	740	}
524		741
525	inline void	742	void inline_size
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	743	adjustheap (WT *heap, int N, int k)
527	{	744	{
528	ev_tstamp old_at = heap [k]->at;	745	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	746	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	747	}
536		748
537	/*****************************************************************************/	749	/*****************************************************************************/
538		750
539	typedef struct	751	typedef struct
…		…
545	static ANSIG *signals;	757	static ANSIG *signals;
546	static int signalmax;	758	static int signalmax;
547		759
548	static int sigpipe [2];	760	static int sigpipe [2];
549	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
550	static struct ev_io sigev;	762	static ev_io sigev;
551		763
552	static void	764	void inline_size
553	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
554	{	766	{
555	while (count--)	767	while (count--)
556	{	768	{
557	base->head = 0;	769	base->head = 0;
…		…
562	}	774	}
563		775
564	static void	776	static void
565	sighandler (int signum)	777	sighandler (int signum)
566	{	778	{
567	#if WIN32	779	#if _WIN32
568	signal (signum, sighandler);	780	signal (signum, sighandler);
569	#endif	781	#endif
570		782
571	signals [signum - 1].gotsig = 1;	783	signals [signum - 1].gotsig = 1;
572		784
573	if (!gotsig)	785	if (!gotsig)
574	{	786	{
575	int old_errno = errno;	787	int old_errno = errno;
576	gotsig = 1;	788	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	790	errno = old_errno;
583	}	791	}
584	}	792	}
585		793
586	void	794	void noinline
587	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
588	{	796	{
589	WL w;	797	WL w;
590		798
591	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	800	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593	#endif	801	#endif
594		802
595	--signum;	803	--signum;
596		804
597	if (signum < 0 || signum >= signalmax)	805	if (signum < 0 || signum >= signalmax)
…		…
602	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604	}	812	}
605		813
606	static void	814	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
608	{	816	{
609	int signum;	817	int signum;
610		818
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	820	gotsig = 0;
617		821
618	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
621	}	825	}
622		826
623	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
624	siginit (EV_P)	840	siginit (EV_P)
625	{	841	{
626	#ifndef WIN32	842	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	843	fd_intern (sigpipe [1]);
628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630	/* rather than sort out wether we really need nb, set it */
631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633	#endif
634		844
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	845	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	846	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	848	}
639		849
640	/*****************************************************************************/	850	/*****************************************************************************/
641		851
642	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
643		853
644	#ifndef WIN32	854	#ifndef _WIN32
645		855
646	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	}
647		872
648	#ifndef WCONTINUED	873	#ifndef WCONTINUED
649	# define WCONTINUED 0	874	# define WCONTINUED 0
650	#endif	875	#endif
651		876
652	static void	877	static void
653	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
654	{
655	struct ev_child *w;
656
657	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
658	if (w->pid == pid || !w->pid)
659	{
660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661	w->rpid = pid;
662	w->rstatus = status;
663	ev_feed_event (EV_A_ (W)w, EV_CHILD);
664	}
665	}
666
667	static void
668	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
669	{	879	{
670	int pid, status;	880	int pid, status;
671		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
674	/* 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 */
675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		892
677	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
678	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 */
679	}
680	}	896	}
681		897
682	#endif	898	#endif
683		899
684	/*****************************************************************************/	900	/*****************************************************************************/
685		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
686	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
688	#endif	907	#endif
689	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	909	# include "ev_epoll.c"
…		…
707	{	926	{
708	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
709	}	928	}
710		929
711	/* 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 */
712	static int	931	int inline_size
713	enable_secure (void)	932	enable_secure (void)
714	{	933	{
715	#ifdef WIN32	934	#ifdef _WIN32
716	return 0;	935	return 0;
717	#else	936	#else
718	return getuid () != geteuid ()	937	return getuid () != geteuid ()
719	|| getgid () != getegid ();	938	|| getgid () != getegid ();
720	#endif	939	#endif
721	}	940	}
722		941
723	int	942	unsigned int
724	ev_method (EV_P)	943	ev_supported_backends (void)
725	{	944	{
726	return method;	945	unsigned int flags = 0;
727	}
728		946
729	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730	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)
731	{	958	{
732	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	#ifdef __APPLE__
		984	/* is there anything thats not broken on darwin? */
		985	flags &= ~EVBACKEND_KQUEUE;
		986	#endif
		987
		988	return flags;
		989	}
		990
		991	unsigned int
		992	ev_backend (EV_P)
		993	{
		994	return backend;
		995	}
		996
		997	unsigned int
		998	ev_loop_count (EV_P)
		999	{
		1000	return loop_count;
		1001	}
		1002
		1003	void
		1004	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1005	{
		1006	io_blocktime = interval;
		1007	}
		1008
		1009	void
		1010	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1011	{
		1012	timeout_blocktime = interval;
		1013	}
		1014
		1015	static void noinline
		1016	loop_init (EV_P_ unsigned int flags)
		1017	{
		1018	if (!backend)
733	{	1019	{
734	#if EV_USE_MONOTONIC	1020	#if EV_USE_MONOTONIC
735	{	1021	{
736	struct timespec ts;	1022	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1023	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	1028	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	1029	mn_now = get_clock ();
744	now_floor = mn_now;	1030	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	1031	rtmn_diff = ev_rt_now - mn_now;
746		1032
747	if (methods == EVMETHOD_AUTO)	1033	io_blocktime = 0.;
748	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1034	timeout_blocktime = 0.;
		1035
		1036	/* pid check not overridable via env */
		1037	#ifndef _WIN32
		1038	if (flags & EVFLAG_FORKCHECK)
		1039	curpid = getpid ();
		1040	#endif
		1041
		1042	if (!(flags & EVFLAG_NOENV)
		1043	&& !enable_secure ()
		1044	&& getenv ("LIBEV_FLAGS"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	1045	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		1046
753	method = 0;	1047	if (!(flags & 0x0000ffffUL))
		1048	flags |= ev_recommended_backends ();
		1049
		1050	backend = 0;
		1051	backend_fd = -1;
754	#if EV_USE_WIN32	1052	#if EV_USE_INOTIFY
755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1053	fs_fd = -2;
		1054	#endif
		1055
		1056	#if EV_USE_PORT
		1057	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756	#endif	1058	#endif
757	#if EV_USE_KQUEUE	1059	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1060	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	1061	#endif
760	#if EV_USE_EPOLL	1062	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1063	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	1064	#endif
763	#if EV_USE_POLL	1065	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1066	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	1067	#endif
766	#if EV_USE_SELECT	1068	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1069	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	1070	#endif
769		1071
770	ev_init (&sigev, sigcb);	1072	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	1073	ev_set_priority (&sigev, EV_MAXPRI);
772	}	1074	}
773	}	1075	}
774		1076
775	void	1077	static void noinline
776	loop_destroy (EV_P)	1078	loop_destroy (EV_P)
777	{	1079	{
778	int i;	1080	int i;
779		1081
780	#if EV_USE_WIN32	1082	#if EV_USE_INOTIFY
781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1083	if (fs_fd >= 0)
		1084	close (fs_fd);
		1085	#endif
		1086
		1087	if (backend_fd >= 0)
		1088	close (backend_fd);
		1089
		1090	#if EV_USE_PORT
		1091	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782	#endif	1092	#endif
783	#if EV_USE_KQUEUE	1093	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1094	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	1095	#endif
786	#if EV_USE_EPOLL	1096	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1097	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	1098	#endif
789	#if EV_USE_POLL	1099	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1100	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	1101	#endif
792	#if EV_USE_SELECT	1102	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1103	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	1104	#endif
795		1105
796	for (i = NUMPRI; i--; )	1106	for (i = NUMPRI; i--; )
		1107	{
797	array_free (pending, [i]);	1108	array_free (pending, [i]);
		1109	#if EV_IDLE_ENABLE
		1110	array_free (idle, [i]);
		1111	#endif
		1112	}
		1113
		1114	ev_free (anfds); anfdmax = 0;
798		1115
799	/* have to use the microsoft-never-gets-it-right macro */	1116	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	1117	array_free (fdchange, EMPTY);
801	array_free_microshit (timer);	1118	array_free (timer, EMPTY);
802	array_free_microshit (periodic);	1119	#if EV_PERIODIC_ENABLE
803	array_free_microshit (idle);	1120	array_free (periodic, EMPTY);
804	array_free_microshit (prepare);	1121	#endif
805	array_free_microshit (check);	1122	#if EV_FORK_ENABLE
		1123	array_free (fork, EMPTY);
		1124	#endif
		1125	array_free (prepare, EMPTY);
		1126	array_free (check, EMPTY);
806		1127
807	method = 0;	1128	backend = 0;
808	}	1129	}
809		1130
810	static void	1131	void inline_size infy_fork (EV_P);
		1132
		1133	void inline_size
811	loop_fork (EV_P)	1134	loop_fork (EV_P)
812	{	1135	{
		1136	#if EV_USE_PORT
		1137	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1138	#endif
		1139	#if EV_USE_KQUEUE
		1140	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1141	#endif
813	#if EV_USE_EPOLL	1142	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1143	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif	1144	#endif
816	#if EV_USE_KQUEUE	1145	#if EV_USE_INOTIFY
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1146	infy_fork (EV_A);
818	#endif	1147	#endif
819		1148
820	if (ev_is_active (&sigev))	1149	if (ev_is_active (&sigev))
821	{	1150	{
822	/* default loop */	1151	/* default loop */
…		…
835	postfork = 0;	1164	postfork = 0;
836	}	1165	}
837		1166
838	#if EV_MULTIPLICITY	1167	#if EV_MULTIPLICITY
839	struct ev_loop *	1168	struct ev_loop *
840	ev_loop_new (int methods)	1169	ev_loop_new (unsigned int flags)
841	{	1170	{
842	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1171	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
843		1172
844	memset (loop, 0, sizeof (struct ev_loop));	1173	memset (loop, 0, sizeof (struct ev_loop));
845		1174
846	loop_init (EV_A_ methods);	1175	loop_init (EV_A_ flags);
847		1176
848	if (ev_method (EV_A))	1177	if (ev_backend (EV_A))
849	return loop;	1178	return loop;
850		1179
851	return 0;	1180	return 0;
852	}	1181	}
853		1182
…		…
866		1195
867	#endif	1196	#endif
868		1197
869	#if EV_MULTIPLICITY	1198	#if EV_MULTIPLICITY
870	struct ev_loop *	1199	struct ev_loop *
		1200	ev_default_loop_init (unsigned int flags)
871	#else	1201	#else
872	int	1202	int
		1203	ev_default_loop (unsigned int flags)
873	#endif	1204	#endif
874	ev_default_loop (int methods)
875	{	1205	{
876	if (sigpipe [0] == sigpipe [1])	1206	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	1207	if (pipe (sigpipe))
878	return 0;	1208	return 0;
879		1209
880	if (!default_loop)	1210	if (!ev_default_loop_ptr)
881	{	1211	{
882	#if EV_MULTIPLICITY	1212	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	1213	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	1214	#else
885	default_loop = 1;	1215	ev_default_loop_ptr = 1;
886	#endif	1216	#endif
887		1217
888	loop_init (EV_A_ methods);	1218	loop_init (EV_A_ flags);
889		1219
890	if (ev_method (EV_A))	1220	if (ev_backend (EV_A))
891	{	1221	{
892	siginit (EV_A);	1222	siginit (EV_A);
893		1223
894	#ifndef WIN32	1224	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1225	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1226	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1227	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1228	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1229	#endif
900	}	1230	}
901	else	1231	else
902	default_loop = 0;	1232	ev_default_loop_ptr = 0;
903	}	1233	}
904		1234
905	return default_loop;	1235	return ev_default_loop_ptr;
906	}	1236	}
907		1237
908	void	1238	void
909	ev_default_destroy (void)	1239	ev_default_destroy (void)
910	{	1240	{
911	#if EV_MULTIPLICITY	1241	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1242	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1243	#endif
914		1244
915	#ifndef WIN32	1245	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1246	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1247	ev_signal_stop (EV_A_ &childev);
918	#endif	1248	#endif
919		1249
920	ev_ref (EV_A); /* signal watcher */	1250	ev_ref (EV_A); /* signal watcher */
…		…
928		1258
929	void	1259	void
930	ev_default_fork (void)	1260	ev_default_fork (void)
931	{	1261	{
932	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1263	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1264	#endif
935		1265
936	if (method)	1266	if (backend)
937	postfork = 1;	1267	postfork = 1;
938	}	1268	}
939		1269
940	/*****************************************************************************/	1270	/*****************************************************************************/
941		1271
942	static int	1272	void
943	any_pending (EV_P)	1273	ev_invoke (EV_P_ void *w, int revents)
944	{	1274	{
945	int pri;	1275	EV_CB_INVOKE ((W)w, revents);
946
947	for (pri = NUMPRI; pri--; )
948	if (pendingcnt [pri])
949	return 1;
950
951	return 0;
952	}	1276	}
953		1277
954	static void	1278	void inline_speed
955	call_pending (EV_P)	1279	call_pending (EV_P)
956	{	1280	{
957	int pri;	1281	int pri;
958		1282
959	for (pri = NUMPRI; pri--; )	1283	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1284	while (pendingcnt [pri])
961	{	1285	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1286	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1287
964	if (p->w)	1288	if (expect_true (p->w))
965	{	1289	{
		1290	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1291
966	p->w->pending = 0;	1292	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1293	EV_CB_INVOKE (p->w, p->events);
968	}	1294	}
969	}	1295	}
970	}	1296	}
971		1297
972	static void	1298	void inline_size
973	timers_reify (EV_P)	1299	timers_reify (EV_P)
974	{	1300	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1301	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1302	{
977	struct ev_timer *w = timers [0];	1303	ev_timer *w = (ev_timer *)timers [0];
978		1304
979	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1305	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980		1306
981	/* first reschedule or stop timer */	1307	/* first reschedule or stop timer */
982	if (w->repeat)	1308	if (w->repeat)
983	{	1309	{
984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1310	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1311
985	((WT)w)->at = mn_now + w->repeat;	1312	((WT)w)->at += w->repeat;
		1313	if (((WT)w)->at < mn_now)
		1314	((WT)w)->at = mn_now;
		1315
986	downheap ((WT *)timers, timercnt, 0);	1316	downheap (timers, timercnt, 0);
987	}	1317	}
988	else	1318	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1319	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1320
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1321	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1322	}
993	}	1323	}
994		1324
995	static void	1325	#if EV_PERIODIC_ENABLE
		1326	void inline_size
996	periodics_reify (EV_P)	1327	periodics_reify (EV_P)
997	{	1328	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1329	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1330	{
1000	struct ev_periodic *w = periodics [0];	1331	ev_periodic *w = (ev_periodic *)periodics [0];
1001		1332
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1333	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003		1334
1004	/* first reschedule or stop timer */	1335	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1336	if (w->reschedule_cb)
1006	{	1337	{
1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1338	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1008
1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1339	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1340	downheap (periodics, periodiccnt, 0);
1011	}	1341	}
1012	else if (w->interval)	1342	else if (w->interval)
1013	{	1343	{
1014	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1344	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1345	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1015	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1346	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1016	downheap ((WT *)periodics, periodiccnt, 0);	1347	downheap (periodics, periodiccnt, 0);
1017	}	1348	}
1018	else	1349	else
1019	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1350	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1020		1351
1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1352	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022	}	1353	}
1023	}	1354	}
1024		1355
1025	static void	1356	static void noinline
1026	periodics_reschedule (EV_P)	1357	periodics_reschedule (EV_P)
1027	{	1358	{
1028	int i;	1359	int i;
1029		1360
1030	/* adjust periodics after time jump */	1361	/* adjust periodics after time jump */
1031	for (i = 0; i < periodiccnt; ++i)	1362	for (i = 0; i < periodiccnt; ++i)
1032	{	1363	{
1033	struct ev_periodic *w = periodics [i];	1364	ev_periodic *w = (ev_periodic *)periodics [i];
1034		1365
1035	if (w->reschedule_cb)	1366	if (w->reschedule_cb)
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1367	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037	else if (w->interval)	1368	else if (w->interval)
1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1369	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1039	}	1370	}
1040		1371
1041	/* now rebuild the heap */	1372	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1373	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1374	downheap (periodics, periodiccnt, i);
1044	}	1375	}
		1376	#endif
1045		1377
1046	inline int	1378	#if EV_IDLE_ENABLE
1047	time_update_monotonic (EV_P)	1379	void inline_size
		1380	idle_reify (EV_P)
1048	{	1381	{
		1382	if (expect_false (idleall))
		1383	{
		1384	int pri;
		1385
		1386	for (pri = NUMPRI; pri--; )
		1387	{
		1388	if (pendingcnt [pri])
		1389	break;
		1390
		1391	if (idlecnt [pri])
		1392	{
		1393	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1394	break;
		1395	}
		1396	}
		1397	}
		1398	}
		1399	#endif
		1400
		1401	void inline_speed
		1402	time_update (EV_P_ ev_tstamp max_block)
		1403	{
		1404	int i;
		1405
		1406	#if EV_USE_MONOTONIC
		1407	if (expect_true (have_monotonic))
		1408	{
		1409	ev_tstamp odiff = rtmn_diff;
		1410
1049	mn_now = get_clock ();	1411	mn_now = get_clock ();
1050		1412
		1413	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1414	/* interpolate in the meantime */
1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1415	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1052	{	1416	{
1053	ev_rt_now = rtmn_diff + mn_now;	1417	ev_rt_now = rtmn_diff + mn_now;
1054	return 0;	1418	return;
1055	}	1419	}
1056	else	1420
1057	{
1058	now_floor = mn_now;	1421	now_floor = mn_now;
1059	ev_rt_now = ev_time ();	1422	ev_rt_now = ev_time ();
1060	return 1;
1061	}
1062	}
1063		1423
1064	static void	1424	/* loop a few times, before making important decisions.
1065	time_update (EV_P)	1425	* on the choice of "4": one iteration isn't enough,
1066	{	1426	* in case we get preempted during the calls to
1067	int i;	1427	* ev_time and get_clock. a second call is almost guaranteed
1068		1428	* to succeed in that case, though. and looping a few more times
1069	#if EV_USE_MONOTONIC	1429	* doesn't hurt either as we only do this on time-jumps or
1070	if (expect_true (have_monotonic))	1430	* in the unlikely event of having been preempted here.
1071	{	1431	*/
1072	if (time_update_monotonic (EV_A))	1432	for (i = 4; --i; )
1073	{	1433	{
1074	ev_tstamp odiff = rtmn_diff;
1075
1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1077	{
1078	rtmn_diff = ev_rt_now - mn_now;	1434	rtmn_diff = ev_rt_now - mn_now;
1079		1435
1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1436	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081	return; /* all is well */	1437	return; /* all is well */
1082		1438
1083	ev_rt_now = ev_time ();	1439	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1440	mn_now = get_clock ();
1085	now_floor = mn_now;	1441	now_floor = mn_now;
1086	}	1442	}
1087		1443
		1444	# if EV_PERIODIC_ENABLE
		1445	periodics_reschedule (EV_A);
		1446	# endif
		1447	/* no timer adjustment, as the monotonic clock doesn't jump */
		1448	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1449	}
		1450	else
		1451	#endif
		1452	{
		1453	ev_rt_now = ev_time ();
		1454
		1455	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1456	{
		1457	#if EV_PERIODIC_ENABLE
1088	periodics_reschedule (EV_A);	1458	periodics_reschedule (EV_A);
1089	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}
1092	}
1093	else
1094	#endif	1459	#endif
1095	{
1096	ev_rt_now = ev_time ();
1097
1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{
1100	periodics_reschedule (EV_A);
1101
1102	/* adjust timers. this is easy, as the offset is the same for all */	1460	/* adjust timers. this is easy, as the offset is the same for all of them */
1103	for (i = 0; i < timercnt; ++i)	1461	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1462	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1463	}
1106		1464
1107	mn_now = ev_rt_now;	1465	mn_now = ev_rt_now;
…		…
1123	static int loop_done;	1481	static int loop_done;
1124		1482
1125	void	1483	void
1126	ev_loop (EV_P_ int flags)	1484	ev_loop (EV_P_ int flags)
1127	{	1485	{
1128	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1486	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1487	? EVUNLOOP_ONE
		1488	: EVUNLOOP_CANCEL;
		1489
		1490	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1130		1491
1131	do	1492	do
1132	{	1493	{
		1494	#ifndef _WIN32
		1495	if (expect_false (curpid)) /* penalise the forking check even more */
		1496	if (expect_false (getpid () != curpid))
		1497	{
		1498	curpid = getpid ();
		1499	postfork = 1;
		1500	}
		1501	#endif
		1502
		1503	#if EV_FORK_ENABLE
		1504	/* we might have forked, so queue fork handlers */
		1505	if (expect_false (postfork))
		1506	if (forkcnt)
		1507	{
		1508	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1509	call_pending (EV_A);
		1510	}
		1511	#endif
		1512
1133	/* queue check watchers (and execute them) */	1513	/* queue prepare watchers (and execute them) */
1134	if (expect_false (preparecnt))	1514	if (expect_false (preparecnt))
1135	{	1515	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1516	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137	call_pending (EV_A);	1517	call_pending (EV_A);
1138	}	1518	}
1139		1519
		1520	if (expect_false (!activecnt))
		1521	break;
		1522
1140	/* we might have forked, so reify kernel state if necessary */	1523	/* we might have forked, so reify kernel state if necessary */
1141	if (expect_false (postfork))	1524	if (expect_false (postfork))
1142	loop_fork (EV_A);	1525	loop_fork (EV_A);
1143		1526
1144	/* update fd-related kernel structures */	1527	/* update fd-related kernel structures */
1145	fd_reify (EV_A);	1528	fd_reify (EV_A);
1146		1529
1147	/* calculate blocking time */	1530	/* calculate blocking time */
		1531	{
		1532	ev_tstamp waittime = 0.;
		1533	ev_tstamp sleeptime = 0.;
1148		1534
1149	/* we only need this for !monotonic clock or timers, but as we basically	1535	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1150	always have timers, we just calculate it always */
1151	#if EV_USE_MONOTONIC
1152	if (expect_true (have_monotonic))
1153	time_update_monotonic (EV_A);
1154	else
1155	#endif
1156	{	1536	{
1157	ev_rt_now = ev_time ();	1537	/* update time to cancel out callback processing overhead */
1158	mn_now = ev_rt_now;	1538	time_update (EV_A_ 1e100);
1159	}
1160		1539
1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
1162	block = 0.;
1163	else
1164	{
1165	block = MAX_BLOCKTIME;	1540	waittime = MAX_BLOCKTIME;
1166		1541
1167	if (timercnt)	1542	if (timercnt)
1168	{	1543	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1544	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1545	if (waittime > to) waittime = to;
1171	}	1546	}
1172		1547
		1548	#if EV_PERIODIC_ENABLE
1173	if (periodiccnt)	1549	if (periodiccnt)
1174	{	1550	{
1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1551	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176	if (block > to) block = to;	1552	if (waittime > to) waittime = to;
1177	}	1553	}
		1554	#endif
1178		1555
1179	if (block < 0.) block = 0.;	1556	if (expect_false (waittime < timeout_blocktime))
		1557	waittime = timeout_blocktime;
		1558
		1559	sleeptime = waittime - backend_fudge;
		1560
		1561	if (expect_true (sleeptime > io_blocktime))
		1562	sleeptime = io_blocktime;
		1563
		1564	if (sleeptime)
		1565	{
		1566	ev_sleep (sleeptime);
		1567	waittime -= sleeptime;
		1568	}
1180	}	1569	}
1181		1570
1182	method_poll (EV_A_ block);	1571	++loop_count;
		1572	backend_poll (EV_A_ waittime);
1183		1573
1184	/* update ev_rt_now, do magic */	1574	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1575	time_update (EV_A_ waittime + sleeptime);
		1576	}
1186		1577
1187	/* queue pending timers and reschedule them */	1578	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1579	timers_reify (EV_A); /* relative timers called last */
		1580	#if EV_PERIODIC_ENABLE
1189	periodics_reify (EV_A); /* absolute timers called first */	1581	periodics_reify (EV_A); /* absolute timers called first */
		1582	#endif
1190		1583
		1584	#if EV_IDLE_ENABLE
1191	/* queue idle watchers unless io or timers are pending */	1585	/* queue idle watchers unless other events are pending */
1192	if (idlecnt && !any_pending (EV_A))	1586	idle_reify (EV_A);
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1587	#endif
1194		1588
1195	/* queue check watchers, to be executed first */	1589	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1590	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1591	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1592
1199	call_pending (EV_A);	1593	call_pending (EV_A);
		1594
1200	}	1595	}
1201	while (activecnt && !loop_done);	1596	while (expect_true (activecnt && !loop_done));
1202		1597
1203	if (loop_done != 2)	1598	if (loop_done == EVUNLOOP_ONE)
1204	loop_done = 0;	1599	loop_done = EVUNLOOP_CANCEL;
1205	}	1600	}
1206		1601
1207	void	1602	void
1208	ev_unloop (EV_P_ int how)	1603	ev_unloop (EV_P_ int how)
1209	{	1604	{
1210	loop_done = how;	1605	loop_done = how;
1211	}	1606	}
1212		1607
1213	/*****************************************************************************/	1608	/*****************************************************************************/
1214		1609
1215	inline void	1610	void inline_size
1216	wlist_add (WL *head, WL elem)	1611	wlist_add (WL *head, WL elem)
1217	{	1612	{
1218	elem->next = *head;	1613	elem->next = *head;
1219	*head = elem;	1614	*head = elem;
1220	}	1615	}
1221		1616
1222	inline void	1617	void inline_size
1223	wlist_del (WL *head, WL elem)	1618	wlist_del (WL *head, WL elem)
1224	{	1619	{
1225	while (*head)	1620	while (*head)
1226	{	1621	{
1227	if (*head == elem)	1622	if (*head == elem)
…		…
1232		1627
1233	head = &(*head)->next;	1628	head = &(*head)->next;
1234	}	1629	}
1235	}	1630	}
1236		1631
1237	inline void	1632	void inline_speed
1238	ev_clear_pending (EV_P_ W w)	1633	clear_pending (EV_P_ W w)
1239	{	1634	{
1240	if (w->pending)	1635	if (w->pending)
1241	{	1636	{
1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1637	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243	w->pending = 0;	1638	w->pending = 0;
1244	}	1639	}
1245	}	1640	}
1246		1641
1247	inline void	1642	int
		1643	ev_clear_pending (EV_P_ void *w)
		1644	{
		1645	W w_ = (W)w;
		1646	int pending = w_->pending;
		1647
		1648	if (expect_true (pending))
		1649	{
		1650	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1651	w_->pending = 0;
		1652	p->w = 0;
		1653	return p->events;
		1654	}
		1655	else
		1656	return 0;
		1657	}
		1658
		1659	void inline_size
		1660	pri_adjust (EV_P_ W w)
		1661	{
		1662	int pri = w->priority;
		1663	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1664	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1665	w->priority = pri;
		1666	}
		1667
		1668	void inline_speed
1248	ev_start (EV_P_ W w, int active)	1669	ev_start (EV_P_ W w, int active)
1249	{	1670	{
1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1671	pri_adjust (EV_A_ w);
1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252
1253	w->active = active;	1672	w->active = active;
1254	ev_ref (EV_A);	1673	ev_ref (EV_A);
1255	}	1674	}
1256		1675
1257	inline void	1676	void inline_size
1258	ev_stop (EV_P_ W w)	1677	ev_stop (EV_P_ W w)
1259	{	1678	{
1260	ev_unref (EV_A);	1679	ev_unref (EV_A);
1261	w->active = 0;	1680	w->active = 0;
1262	}	1681	}
1263		1682
1264	/*****************************************************************************/	1683	/*****************************************************************************/
1265		1684
1266	void	1685	void noinline
1267	ev_io_start (EV_P_ struct ev_io *w)	1686	ev_io_start (EV_P_ ev_io *w)
1268	{	1687	{
1269	int fd = w->fd;	1688	int fd = w->fd;
1270		1689
1271	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1272	return;	1691	return;
1273		1692
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1693	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1694
1276	ev_start (EV_A_ (W)w, 1);	1695	ev_start (EV_A_ (W)w, 1);
1277	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1696	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1278	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1697	wlist_add (&anfds[fd].head, (WL)w);
1279		1698
1280	fd_change (EV_A_ fd);	1699	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1700	w->events &= ~EV_IOFDSET;
1281	}	1701	}
1282		1702
1283	void	1703	void noinline
1284	ev_io_stop (EV_P_ struct ev_io *w)	1704	ev_io_stop (EV_P_ ev_io *w)
1285	{	1705	{
1286	ev_clear_pending (EV_A_ (W)w);	1706	clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1707	if (expect_false (!ev_is_active (w)))
1288	return;	1708	return;
1289		1709
		1710	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1711
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1712	wlist_del (&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1713	ev_stop (EV_A_ (W)w);
1292		1714
1293	fd_change (EV_A_ w->fd);	1715	fd_change (EV_A_ w->fd, 1);
1294	}	1716	}
1295		1717
1296	void	1718	void noinline
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1719	ev_timer_start (EV_P_ ev_timer *w)
		1720	{
		1721	if (expect_false (ev_is_active (w)))
		1722	return;
		1723
		1724	((WT)w)->at += mn_now;
		1725
		1726	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1727
		1728	ev_start (EV_A_ (W)w, ++timercnt);
		1729	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1730	timers [timercnt - 1] = (WT)w;
		1731	upheap (timers, timercnt - 1);
		1732
		1733	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1734	}
		1735
		1736	void noinline
		1737	ev_timer_stop (EV_P_ ev_timer *w)
		1738	{
		1739	clear_pending (EV_A_ (W)w);
		1740	if (expect_false (!ev_is_active (w)))
		1741	return;
		1742
		1743	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1744
		1745	{
		1746	int active = ((W)w)->active;
		1747
		1748	if (expect_true (--active < --timercnt))
		1749	{
		1750	timers [active] = timers [timercnt];
		1751	adjustheap (timers, timercnt, active);
		1752	}
		1753	}
		1754
		1755	((WT)w)->at -= mn_now;
		1756
		1757	ev_stop (EV_A_ (W)w);
		1758	}
		1759
		1760	void noinline
		1761	ev_timer_again (EV_P_ ev_timer *w)
1298	{	1762	{
1299	if (ev_is_active (w))	1763	if (ev_is_active (w))
1300	return;
1301
1302	((WT)w)->at += mn_now;
1303
1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305
1306	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1308	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);
1310
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}
1313
1314	void
1315	ev_timer_stop (EV_P_ struct ev_timer *w)
1316	{
1317	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))
1319	return;
1320
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1322
1323	if (((W)w)->active < timercnt--)
1324	{
1325	timers [((W)w)->active - 1] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1327	}
1328
1329	((WT)w)->at = w->repeat;
1330
1331	ev_stop (EV_A_ (W)w);
1332	}
1333
1334	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)
1336	{
1337	if (ev_is_active (w))
1338	{	1764	{
1339	if (w->repeat)	1765	if (w->repeat)
		1766	{
		1767	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1768	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1769	}
1341	else	1770	else
1342	ev_timer_stop (EV_A_ w);	1771	ev_timer_stop (EV_A_ w);
1343	}	1772	}
1344	else if (w->repeat)	1773	else if (w->repeat)
		1774	{
		1775	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1776	ev_timer_start (EV_A_ w);
		1777	}
1346	}	1778	}
1347		1779
1348	void	1780	#if EV_PERIODIC_ENABLE
		1781	void noinline
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1782	ev_periodic_start (EV_P_ ev_periodic *w)
1350	{	1783	{
1351	if (ev_is_active (w))	1784	if (expect_false (ev_is_active (w)))
1352	return;	1785	return;
1353		1786
1354	if (w->reschedule_cb)	1787	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1788	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1789	else if (w->interval)
1357	{	1790	{
1358	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1791	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1359	/* this formula differs from the one in periodic_reify because we do not always round up */	1792	/* this formula differs from the one in periodic_reify because we do not always round up */
1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1793	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1361	}	1794	}
		1795	else
		1796	((WT)w)->at = w->offset;
1362		1797
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1798	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1799	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1800	periodics [periodiccnt - 1] = (WT)w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1801	upheap (periodics, periodiccnt - 1);
1367		1802
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1803	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1369	}	1804	}
1370		1805
1371	void	1806	void noinline
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1807	ev_periodic_stop (EV_P_ ev_periodic *w)
1373	{	1808	{
1374	ev_clear_pending (EV_A_ (W)w);	1809	clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))	1810	if (expect_false (!ev_is_active (w)))
1376	return;	1811	return;
1377		1812
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1813	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1379		1814
1380	if (((W)w)->active < periodiccnt--)	1815	{
		1816	int active = ((W)w)->active;
		1817
		1818	if (expect_true (--active < --periodiccnt))
1381	{	1819	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1820	periodics [active] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1821	adjustheap (periodics, periodiccnt, active);
1384	}	1822	}
		1823	}
1385		1824
1386	ev_stop (EV_A_ (W)w);	1825	ev_stop (EV_A_ (W)w);
1387	}	1826	}
1388		1827
1389	void	1828	void noinline
1390	ev_periodic_again (EV_P_ struct ev_periodic *w)	1829	ev_periodic_again (EV_P_ ev_periodic *w)
1391	{	1830	{
1392	/* TODO: use adjustheap and recalculation */	1831	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1832	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1833	ev_periodic_start (EV_A_ w);
1395	}	1834	}
1396		1835	#endif
1397	void
1398	ev_idle_start (EV_P_ struct ev_idle *w)
1399	{
1400	if (ev_is_active (w))
1401	return;
1402
1403	ev_start (EV_A_ (W)w, ++idlecnt);
1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1405	idles [idlecnt - 1] = w;
1406	}
1407
1408	void
1409	ev_idle_stop (EV_P_ struct ev_idle *w)
1410	{
1411	ev_clear_pending (EV_A_ (W)w);
1412	if (ev_is_active (w))
1413	return;
1414
1415	idles [((W)w)->active - 1] = idles [--idlecnt];
1416	ev_stop (EV_A_ (W)w);
1417	}
1418
1419	void
1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
1421	{
1422	if (ev_is_active (w))
1423	return;
1424
1425	ev_start (EV_A_ (W)w, ++preparecnt);
1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1427	prepares [preparecnt - 1] = w;
1428	}
1429
1430	void
1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432	{
1433	ev_clear_pending (EV_A_ (W)w);
1434	if (ev_is_active (w))
1435	return;
1436
1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438	ev_stop (EV_A_ (W)w);
1439	}
1440
1441	void
1442	ev_check_start (EV_P_ struct ev_check *w)
1443	{
1444	if (ev_is_active (w))
1445	return;
1446
1447	ev_start (EV_A_ (W)w, ++checkcnt);
1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1449	checks [checkcnt - 1] = w;
1450	}
1451
1452	void
1453	ev_check_stop (EV_P_ struct ev_check *w)
1454	{
1455	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))
1457	return;
1458
1459	checks [((W)w)->active - 1] = checks [--checkcnt];
1460	ev_stop (EV_A_ (W)w);
1461	}
1462		1836
1463	#ifndef SA_RESTART	1837	#ifndef SA_RESTART
1464	# define SA_RESTART 0	1838	# define SA_RESTART 0
1465	#endif	1839	#endif
1466		1840
1467	void	1841	void noinline
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1842	ev_signal_start (EV_P_ ev_signal *w)
1469	{	1843	{
1470	#if EV_MULTIPLICITY	1844	#if EV_MULTIPLICITY
1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1845	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472	#endif	1846	#endif
1473	if (ev_is_active (w))	1847	if (expect_false (ev_is_active (w)))
1474	return;	1848	return;
1475		1849
1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1850	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477		1851
		1852	{
		1853	#ifndef _WIN32
		1854	sigset_t full, prev;
		1855	sigfillset (&full);
		1856	sigprocmask (SIG_SETMASK, &full, &prev);
		1857	#endif
		1858
		1859	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1860
		1861	#ifndef _WIN32
		1862	sigprocmask (SIG_SETMASK, &prev, 0);
		1863	#endif
		1864	}
		1865
1478	ev_start (EV_A_ (W)w, 1);	1866	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1867	wlist_add (&signals [w->signum - 1].head, (WL)w);
1481		1868
1482	if (!((WL)w)->next)	1869	if (!((WL)w)->next)
1483	{	1870	{
1484	#if WIN32	1871	#if _WIN32
1485	signal (w->signum, sighandler);	1872	signal (w->signum, sighandler);
1486	#else	1873	#else
1487	struct sigaction sa;	1874	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1875	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1876	sigfillset (&sa.sa_mask);
…		…
1491	sigaction (w->signum, &sa, 0);	1878	sigaction (w->signum, &sa, 0);
1492	#endif	1879	#endif
1493	}	1880	}
1494	}	1881	}
1495		1882
1496	void	1883	void noinline
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1884	ev_signal_stop (EV_P_ ev_signal *w)
1498	{	1885	{
1499	ev_clear_pending (EV_A_ (W)w);	1886	clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1887	if (expect_false (!ev_is_active (w)))
1501	return;	1888	return;
1502		1889
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1890	wlist_del (&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1891	ev_stop (EV_A_ (W)w);
1505		1892
1506	if (!signals [w->signum - 1].head)	1893	if (!signals [w->signum - 1].head)
1507	signal (w->signum, SIG_DFL);	1894	signal (w->signum, SIG_DFL);
1508	}	1895	}
1509		1896
1510	void	1897	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1898	ev_child_start (EV_P_ ev_child *w)
1512	{	1899	{
1513	#if EV_MULTIPLICITY	1900	#if EV_MULTIPLICITY
1514	assert (("child watchers are only supported in the default loop", loop == default_loop));	1901	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515	#endif	1902	#endif
1516	if (ev_is_active (w))	1903	if (expect_false (ev_is_active (w)))
1517	return;	1904	return;
1518		1905
1519	ev_start (EV_A_ (W)w, 1);	1906	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1907	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521	}	1908	}
1522		1909
1523	void	1910	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1911	ev_child_stop (EV_P_ ev_child *w)
1525	{	1912	{
1526	ev_clear_pending (EV_A_ (W)w);	1913	clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1914	if (expect_false (!ev_is_active (w)))
1528	return;	1915	return;
1529		1916
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1917	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1918	ev_stop (EV_A_ (W)w);
1532	}	1919	}
1533		1920
		1921	#if EV_STAT_ENABLE
		1922
		1923	# ifdef _WIN32
		1924	# undef lstat
		1925	# define lstat(a,b) _stati64 (a,b)
		1926	# endif
		1927
		1928	#define DEF_STAT_INTERVAL 5.0074891
		1929	#define MIN_STAT_INTERVAL 0.1074891
		1930
		1931	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1932
		1933	#if EV_USE_INOTIFY
		1934	# define EV_INOTIFY_BUFSIZE 8192
		1935
		1936	static void noinline
		1937	infy_add (EV_P_ ev_stat *w)
		1938	{
		1939	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);
		1940
		1941	if (w->wd < 0)
		1942	{
		1943	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1944
		1945	/* monitor some parent directory for speedup hints */
		1946	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1947	{
		1948	char path [4096];
		1949	strcpy (path, w->path);
		1950
		1951	do
		1952	{
		1953	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1954	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1955
		1956	char *pend = strrchr (path, '/');
		1957
		1958	if (!pend)
		1959	break; /* whoops, no '/', complain to your admin */
		1960
		1961	*pend = 0;
		1962	w->wd = inotify_add_watch (fs_fd, path, mask);
		1963	}
		1964	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1965	}
		1966	}
		1967	else
		1968	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1969
		1970	if (w->wd >= 0)
		1971	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1972	}
		1973
		1974	static void noinline
		1975	infy_del (EV_P_ ev_stat *w)
		1976	{
		1977	int slot;
		1978	int wd = w->wd;
		1979
		1980	if (wd < 0)
		1981	return;
		1982
		1983	w->wd = -2;
		1984	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1985	wlist_del (&fs_hash [slot].head, (WL)w);
		1986
		1987	/* remove this watcher, if others are watching it, they will rearm */
		1988	inotify_rm_watch (fs_fd, wd);
		1989	}
		1990
		1991	static void noinline
		1992	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1993	{
		1994	if (slot < 0)
		1995	/* overflow, need to check for all hahs slots */
		1996	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1997	infy_wd (EV_A_ slot, wd, ev);
		1998	else
		1999	{
		2000	WL w_;
		2001
		2002	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2003	{
		2004	ev_stat *w = (ev_stat *)w_;
		2005	w_ = w_->next; /* lets us remove this watcher and all before it */
		2006
		2007	if (w->wd == wd || wd == -1)
		2008	{
		2009	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2010	{
		2011	w->wd = -1;
		2012	infy_add (EV_A_ w); /* re-add, no matter what */
		2013	}
		2014
		2015	stat_timer_cb (EV_A_ &w->timer, 0);
		2016	}
		2017	}
		2018	}
		2019	}
		2020
		2021	static void
		2022	infy_cb (EV_P_ ev_io *w, int revents)
		2023	{
		2024	char buf [EV_INOTIFY_BUFSIZE];
		2025	struct inotify_event *ev = (struct inotify_event *)buf;
		2026	int ofs;
		2027	int len = read (fs_fd, buf, sizeof (buf));
		2028
		2029	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2030	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2031	}
		2032
		2033	void inline_size
		2034	infy_init (EV_P)
		2035	{
		2036	if (fs_fd != -2)
		2037	return;
		2038
		2039	fs_fd = inotify_init ();
		2040
		2041	if (fs_fd >= 0)
		2042	{
		2043	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2044	ev_set_priority (&fs_w, EV_MAXPRI);
		2045	ev_io_start (EV_A_ &fs_w);
		2046	}
		2047	}
		2048
		2049	void inline_size
		2050	infy_fork (EV_P)
		2051	{
		2052	int slot;
		2053
		2054	if (fs_fd < 0)
		2055	return;
		2056
		2057	close (fs_fd);
		2058	fs_fd = inotify_init ();
		2059
		2060	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2061	{
		2062	WL w_ = fs_hash [slot].head;
		2063	fs_hash [slot].head = 0;
		2064
		2065	while (w_)
		2066	{
		2067	ev_stat *w = (ev_stat *)w_;
		2068	w_ = w_->next; /* lets us add this watcher */
		2069
		2070	w->wd = -1;
		2071
		2072	if (fs_fd >= 0)
		2073	infy_add (EV_A_ w); /* re-add, no matter what */
		2074	else
		2075	ev_timer_start (EV_A_ &w->timer);
		2076	}
		2077
		2078	}
		2079	}
		2080
		2081	#endif
		2082
		2083	void
		2084	ev_stat_stat (EV_P_ ev_stat *w)
		2085	{
		2086	if (lstat (w->path, &w->attr) < 0)
		2087	w->attr.st_nlink = 0;
		2088	else if (!w->attr.st_nlink)
		2089	w->attr.st_nlink = 1;
		2090	}
		2091
		2092	static void noinline
		2093	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2094	{
		2095	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2096
		2097	/* we copy this here each the time so that */
		2098	/* prev has the old value when the callback gets invoked */
		2099	w->prev = w->attr;
		2100	ev_stat_stat (EV_A_ w);
		2101
		2102	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2103	if (
		2104	w->prev.st_dev != w->attr.st_dev
		2105	|| w->prev.st_ino != w->attr.st_ino
		2106	|| w->prev.st_mode != w->attr.st_mode
		2107	|| w->prev.st_nlink != w->attr.st_nlink
		2108	|| w->prev.st_uid != w->attr.st_uid
		2109	|| w->prev.st_gid != w->attr.st_gid
		2110	|| w->prev.st_rdev != w->attr.st_rdev
		2111	|| w->prev.st_size != w->attr.st_size
		2112	|| w->prev.st_atime != w->attr.st_atime
		2113	|| w->prev.st_mtime != w->attr.st_mtime
		2114	|| w->prev.st_ctime != w->attr.st_ctime
		2115	) {
		2116	#if EV_USE_INOTIFY
		2117	infy_del (EV_A_ w);
		2118	infy_add (EV_A_ w);
		2119	ev_stat_stat (EV_A_ w); /* avoid race... */
		2120	#endif
		2121
		2122	ev_feed_event (EV_A_ w, EV_STAT);
		2123	}
		2124	}
		2125
		2126	void
		2127	ev_stat_start (EV_P_ ev_stat *w)
		2128	{
		2129	if (expect_false (ev_is_active (w)))
		2130	return;
		2131
		2132	/* since we use memcmp, we need to clear any padding data etc. */
		2133	memset (&w->prev, 0, sizeof (ev_statdata));
		2134	memset (&w->attr, 0, sizeof (ev_statdata));
		2135
		2136	ev_stat_stat (EV_A_ w);
		2137
		2138	if (w->interval < MIN_STAT_INTERVAL)
		2139	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2140
		2141	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2142	ev_set_priority (&w->timer, ev_priority (w));
		2143
		2144	#if EV_USE_INOTIFY
		2145	infy_init (EV_A);
		2146
		2147	if (fs_fd >= 0)
		2148	infy_add (EV_A_ w);
		2149	else
		2150	#endif
		2151	ev_timer_start (EV_A_ &w->timer);
		2152
		2153	ev_start (EV_A_ (W)w, 1);
		2154	}
		2155
		2156	void
		2157	ev_stat_stop (EV_P_ ev_stat *w)
		2158	{
		2159	clear_pending (EV_A_ (W)w);
		2160	if (expect_false (!ev_is_active (w)))
		2161	return;
		2162
		2163	#if EV_USE_INOTIFY
		2164	infy_del (EV_A_ w);
		2165	#endif
		2166	ev_timer_stop (EV_A_ &w->timer);
		2167
		2168	ev_stop (EV_A_ (W)w);
		2169	}
		2170	#endif
		2171
		2172	#if EV_IDLE_ENABLE
		2173	void
		2174	ev_idle_start (EV_P_ ev_idle *w)
		2175	{
		2176	if (expect_false (ev_is_active (w)))
		2177	return;
		2178
		2179	pri_adjust (EV_A_ (W)w);
		2180
		2181	{
		2182	int active = ++idlecnt [ABSPRI (w)];
		2183
		2184	++idleall;
		2185	ev_start (EV_A_ (W)w, active);
		2186
		2187	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2188	idles [ABSPRI (w)][active - 1] = w;
		2189	}
		2190	}
		2191
		2192	void
		2193	ev_idle_stop (EV_P_ ev_idle *w)
		2194	{
		2195	clear_pending (EV_A_ (W)w);
		2196	if (expect_false (!ev_is_active (w)))
		2197	return;
		2198
		2199	{
		2200	int active = ((W)w)->active;
		2201
		2202	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2203	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2204
		2205	ev_stop (EV_A_ (W)w);
		2206	--idleall;
		2207	}
		2208	}
		2209	#endif
		2210
		2211	void
		2212	ev_prepare_start (EV_P_ ev_prepare *w)
		2213	{
		2214	if (expect_false (ev_is_active (w)))
		2215	return;
		2216
		2217	ev_start (EV_A_ (W)w, ++preparecnt);
		2218	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2219	prepares [preparecnt - 1] = w;
		2220	}
		2221
		2222	void
		2223	ev_prepare_stop (EV_P_ ev_prepare *w)
		2224	{
		2225	clear_pending (EV_A_ (W)w);
		2226	if (expect_false (!ev_is_active (w)))
		2227	return;
		2228
		2229	{
		2230	int active = ((W)w)->active;
		2231	prepares [active - 1] = prepares [--preparecnt];
		2232	((W)prepares [active - 1])->active = active;
		2233	}
		2234
		2235	ev_stop (EV_A_ (W)w);
		2236	}
		2237
		2238	void
		2239	ev_check_start (EV_P_ ev_check *w)
		2240	{
		2241	if (expect_false (ev_is_active (w)))
		2242	return;
		2243
		2244	ev_start (EV_A_ (W)w, ++checkcnt);
		2245	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2246	checks [checkcnt - 1] = w;
		2247	}
		2248
		2249	void
		2250	ev_check_stop (EV_P_ ev_check *w)
		2251	{
		2252	clear_pending (EV_A_ (W)w);
		2253	if (expect_false (!ev_is_active (w)))
		2254	return;
		2255
		2256	{
		2257	int active = ((W)w)->active;
		2258	checks [active - 1] = checks [--checkcnt];
		2259	((W)checks [active - 1])->active = active;
		2260	}
		2261
		2262	ev_stop (EV_A_ (W)w);
		2263	}
		2264
		2265	#if EV_EMBED_ENABLE
		2266	void noinline
		2267	ev_embed_sweep (EV_P_ ev_embed *w)
		2268	{
		2269	ev_loop (w->other, EVLOOP_NONBLOCK);
		2270	}
		2271
		2272	static void
		2273	embed_io_cb (EV_P_ ev_io *io, int revents)
		2274	{
		2275	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2276
		2277	if (ev_cb (w))
		2278	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2279	else
		2280	ev_loop (w->other, EVLOOP_NONBLOCK);
		2281	}
		2282
		2283	static void
		2284	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2285	{
		2286	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2287
		2288	{
		2289	struct ev_loop *loop = w->other;
		2290
		2291	while (fdchangecnt)
		2292	{
		2293	fd_reify (EV_A);
		2294	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2295	}
		2296	}
		2297	}
		2298
		2299	#if 0
		2300	static void
		2301	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2302	{
		2303	ev_idle_stop (EV_A_ idle);
		2304	}
		2305	#endif
		2306
		2307	void
		2308	ev_embed_start (EV_P_ ev_embed *w)
		2309	{
		2310	if (expect_false (ev_is_active (w)))
		2311	return;
		2312
		2313	{
		2314	struct ev_loop *loop = w->other;
		2315	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2316	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2317	}
		2318
		2319	ev_set_priority (&w->io, ev_priority (w));
		2320	ev_io_start (EV_A_ &w->io);
		2321
		2322	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2323	ev_set_priority (&w->prepare, EV_MINPRI);
		2324	ev_prepare_start (EV_A_ &w->prepare);
		2325
		2326	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2327
		2328	ev_start (EV_A_ (W)w, 1);
		2329	}
		2330
		2331	void
		2332	ev_embed_stop (EV_P_ ev_embed *w)
		2333	{
		2334	clear_pending (EV_A_ (W)w);
		2335	if (expect_false (!ev_is_active (w)))
		2336	return;
		2337
		2338	ev_io_stop (EV_A_ &w->io);
		2339	ev_prepare_stop (EV_A_ &w->prepare);
		2340
		2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
		2345	#if EV_FORK_ENABLE
		2346	void
		2347	ev_fork_start (EV_P_ ev_fork *w)
		2348	{
		2349	if (expect_false (ev_is_active (w)))
		2350	return;
		2351
		2352	ev_start (EV_A_ (W)w, ++forkcnt);
		2353	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2354	forks [forkcnt - 1] = w;
		2355	}
		2356
		2357	void
		2358	ev_fork_stop (EV_P_ ev_fork *w)
		2359	{
		2360	clear_pending (EV_A_ (W)w);
		2361	if (expect_false (!ev_is_active (w)))
		2362	return;
		2363
		2364	{
		2365	int active = ((W)w)->active;
		2366	forks [active - 1] = forks [--forkcnt];
		2367	((W)forks [active - 1])->active = active;
		2368	}
		2369
		2370	ev_stop (EV_A_ (W)w);
		2371	}
		2372	#endif
		2373
1534	/*****************************************************************************/	2374	/*****************************************************************************/
1535		2375
1536	struct ev_once	2376	struct ev_once
1537	{	2377	{
1538	struct ev_io io;	2378	ev_io io;
1539	struct ev_timer to;	2379	ev_timer to;
1540	void (*cb)(int revents, void *arg);	2380	void (*cb)(int revents, void *arg);
1541	void *arg;	2381	void *arg;
1542	};	2382	};
1543		2383
1544	static void	2384	static void
…		…
1553		2393
1554	cb (revents, arg);	2394	cb (revents, arg);
1555	}	2395	}
1556		2396
1557	static void	2397	static void
1558	once_cb_io (EV_P_ struct ev_io *w, int revents)	2398	once_cb_io (EV_P_ ev_io *w, int revents)
1559	{	2399	{
1560	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2400	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1561	}	2401	}
1562		2402
1563	static void	2403	static void
1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2404	once_cb_to (EV_P_ ev_timer *w, int revents)
1565	{	2405	{
1566	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2406	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1567	}	2407	}
1568		2408
1569	void	2409	void
1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2410	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1571	{	2411	{
1572	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2412	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1573		2413
1574	if (!once)	2414	if (expect_false (!once))
		2415	{
1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2416	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576	else	2417	return;
1577	{	2418	}
		2419
1578	once->cb = cb;	2420	once->cb = cb;
1579	once->arg = arg;	2421	once->arg = arg;
1580		2422
1581	ev_init (&once->io, once_cb_io);	2423	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	2424	if (fd >= 0)
1583	{	2425	{
1584	ev_io_set (&once->io, fd, events);	2426	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	2427	ev_io_start (EV_A_ &once->io);
1586	}	2428	}
1587		2429
1588	ev_init (&once->to, once_cb_to);	2430	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	2431	if (timeout >= 0.)
1590	{	2432	{
1591	ev_timer_set (&once->to, timeout, 0.);	2433	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	2434	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	2435	}
1595	}	2436	}
1596		2437
		2438	#if EV_MULTIPLICITY
		2439	#include "ev_wrap.h"
		2440	#endif
		2441
		2442	#ifdef __cplusplus
		2443	}
		2444	#endif
		2445

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