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Comparing libev/ev.c (file contents):
Revision 1.83 by root, Fri Nov 9 21:48:23 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
40	# define EV_USE_SELECT 1	61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
		64	# endif
41	# endif	65	# endif
42		66
43	# if HAVE_POLL && HAVE_POLL_H	67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
44	# define EV_USE_POLL 1	69	# define EV_USE_SELECT 1
		70	# else
		71	# define EV_USE_SELECT 0
		72	# endif
45	# endif	73	# endif
46		74
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_POLL 1
		78	# else
		79	# define EV_USE_POLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_EPOLL
		84	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		85	# define EV_USE_EPOLL 1
		86	# else
		87	# define EV_USE_EPOLL 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	93	# define EV_USE_KQUEUE 1
		94	# else
		95	# define EV_USE_KQUEUE 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_PORT
		100	# if HAVE_PORT_H && HAVE_PORT_CREATE
		101	# define EV_USE_PORT 1
		102	# else
		103	# define EV_USE_PORT 0
		104	# endif
		105	# endif
		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
53	# endif	113	# endif
54		114
55	#endif	115	#endif
56		116
57	#include <math.h>	117	#include <math.h>
…		…
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	{
…		…
271	#endif	420	#endif
272		421
273	return ev_time ();	422	return ev_time ();
274	}	423	}
275		424
		425	#if EV_MULTIPLICITY
276	ev_tstamp	426	ev_tstamp
277	ev_now (EV_P)	427	ev_now (EV_P)
278	{	428	{
279	return rt_now;	429	return ev_rt_now;
280	}	430	}
		431	#endif
281		432
282	#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	}
283		487
284	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
286	{ \	490	{ \
287	int newcnt = cur; \	491	int ocur_ = (cur); \
288	do \	492	(base) = (type *)array_realloc \
289	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
290	newcnt = array_roundsize (type, newcnt << 1); \	494	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	}	495	}
298		496
		497	#if 0
299	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301	{ \	500	{ \
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	504	}
306		505	#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		506
312	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
313	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;
314		509
315	/*****************************************************************************/	510	/*****************************************************************************/
316		511
317	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
318	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
319	{	542	{
320	while (count--)	543	while (count--)
321	{	544	{
322	base->head = 0;	545	base->head = 0;
…		…
325		548
326	++base;	549	++base;
327	}	550	}
328	}	551	}
329		552
330	void	553	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)	554	fd_event (EV_P_ int fd, int revents)
358	{	555	{
359	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	557	ev_io *w;
361		558
362	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)
363	{	560	{
364	int ev = w->events & revents;	561	int ev = w->events & revents;
365		562
366	if (ev)	563	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
369	}	566	}
370		567
371	void	568	void
372	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
374	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
375	}	573	}
376		574
377	/*****************************************************************************/	575	void inline_size
378
379	static void
380	fd_reify (EV_P)	576	fd_reify (EV_P)
381	{	577	{
382	int i;	578	int i;
383		579
384	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
385	{	581	{
386	int fd = fdchanges [i];	582	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	584	ev_io *w;
389		585
390	int events = 0;	586	unsigned char events = 0;
391		587
392	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)
393	events |= w->events;	589	events |= (unsigned char)w->events;
394		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
395	anfd->reify = 0;	604	anfd->reify = 0;
396
397	method_modify (EV_A_ fd, anfd->events, events);
398	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	}
399	}	610	}
400		611
401	fdchangecnt = 0;	612	fdchangecnt = 0;
402	}	613	}
403		614
404	static void	615	void inline_size
405	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
406	{	617	{
407	if (anfds [fd].reify)	618	unsigned char reify = anfds [fd].reify;
408	return;
409
410	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
411		620
		621	if (expect_true (!reify))
		622	{
412	++fdchangecnt;	623	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
415	}	627	}
416		628
417	static void	629	void inline_speed
418	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
419	{	631	{
420	struct ev_io *w;	632	ev_io *w;
421		633
422	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
423	{	635	{
424	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
425	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);
426	}	638	}
427	}	639	}
428		640
429	static int	641	int inline_size
430	fd_valid (int fd)	642	fd_valid (int fd)
431	{	643	{
432	#ifdef WIN32	644	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	645	return _get_osfhandle (fd) != -1;
434	#else	646	#else
435	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
436	#endif	648	#endif
437	}	649	}
438		650
439	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
440	static void	652	static void noinline
441	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
442	{	654	{
443	int fd;	655	int fd;
444		656
445	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
449	}	661	}
450		662
451	/* 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 */
452	static void	664	static void noinline
453	fd_enomem (EV_P)	665	fd_enomem (EV_P)
454	{	666	{
455	int fd;	667	int fd;
456		668
457	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
461	return;	673	return;
462	}	674	}
463	}	675	}
464		676
465	/* 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 */
466	static void	678	static void noinline
467	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
468	{	680	{
469	int fd;	681	int fd;
470		682
471	/* this should be highly optimised to not do anything but set a flag */
472	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
473	if (anfds [fd].events)	684	if (anfds [fd].events)
474	{	685	{
475	anfds [fd].events = 0;	686	anfds [fd].events = 0;
476	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
477	}	688	}
478	}	689	}
479		690
480	/*****************************************************************************/	691	/*****************************************************************************/
481		692
482	static void	693	void inline_speed
483	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
484	{	695	{
485	WT w = heap [k];	696	WT w = heap [k];
486		697
487	while (k && heap [k >> 1]->at > w->at)	698	while (k)
488	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
489	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
490	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
491	k >>= 1;	707	k = p;
492	}	708	}
493		709
494	heap [k] = w;	710	heap [k] = w;
495	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
496
497	}	712	}
498		713
499	static void	714	void inline_speed
500	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
501	{	716	{
502	WT w = heap [k];	717	WT w = heap [k];
503		718
504	while (k < (N >> 1))	719	for (;;)
505	{	720	{
506	int j = k << 1;	721	int c = (k << 1) + 1;
507		722
508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
509	++j;
510
511	if (w->at <= heap [j]->at)
512	break;	724	break;
513		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
514	heap [k] = heap [j];	732	heap [k] = heap [c];
515	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
516	k = j;	735	k = c;
517	}	736	}
518		737
519	heap [k] = w;	738	heap [k] = w;
520	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
		740	}
		741
		742	void inline_size
		743	adjustheap (WT *heap, int N, int k)
		744	{
		745	upheap (heap, k);
		746	downheap (heap, N, k);
521	}	747	}
522		748
523	/*****************************************************************************/	749	/*****************************************************************************/
524		750
525	typedef struct	751	typedef struct
…		…
531	static ANSIG *signals;	757	static ANSIG *signals;
532	static int signalmax;	758	static int signalmax;
533		759
534	static int sigpipe [2];	760	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	762	static ev_io sigev;
537		763
538	static void	764	void inline_size
539	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
540	{	766	{
541	while (count--)	767	while (count--)
542	{	768	{
543	base->head = 0;	769	base->head = 0;
…		…
548	}	774	}
549		775
550	static void	776	static void
551	sighandler (int signum)	777	sighandler (int signum)
552	{	778	{
553	#if WIN32	779	#if _WIN32
554	signal (signum, sighandler);	780	signal (signum, sighandler);
555	#endif	781	#endif
556		782
557	signals [signum - 1].gotsig = 1;	783	signals [signum - 1].gotsig = 1;
558		784
559	if (!gotsig)	785	if (!gotsig)
560	{	786	{
561	int old_errno = errno;	787	int old_errno = errno;
562	gotsig = 1;	788	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	790	errno = old_errno;
569	}	791	}
570	}	792	}
571		793
572	void	794	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
574	{	796	{
575	WL w;	797	WL w;
576		798
577	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
578	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));
579	#endif	801	#endif
580		802
581	--signum;	803	--signum;
582		804
583	if (signum < 0 || signum >= signalmax)	805	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	812	}
591		813
592	static void	814	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
594	{	816	{
595	int signum;	817	int signum;
596		818
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	820	gotsig = 0;
603		821
604	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
607	}	825	}
608		826
609	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
610	siginit (EV_P)	840	siginit (EV_P)
611	{	841	{
612	#ifndef WIN32	842	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	843	fd_intern (sigpipe [1]);
614	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
615
616	/* rather than sort out wether we really need nb, set it */
617	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
618	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
619	#endif
620		844
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	845	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	846	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	848	}
625		849
626	/*****************************************************************************/	850	/*****************************************************************************/
627		851
628	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
629		853
630	#ifndef WIN32	854	#ifndef _WIN32
631		855
632	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	}
633		872
634	#ifndef WCONTINUED	873	#ifndef WCONTINUED
635	# define WCONTINUED 0	874	# define WCONTINUED 0
636	#endif	875	#endif
637		876
638	static void	877	static void
639	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
640	{
641	struct ev_child *w;
642
643	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
644	if (w->pid == pid || !w->pid)
645	{
646	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647	w->rpid = pid;
648	w->rstatus = status;
649	ev_feed_event (EV_A_ (W)w, EV_CHILD);
650	}
651	}
652
653	static void
654	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
655	{	879	{
656	int pid, status;	880	int pid, status;
657		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
660	/* 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 */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		892
663	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
664	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 */
665	}
666	}	896	}
667		897
668	#endif	898	#endif
669		899
670	/*****************************************************************************/	900	/*****************************************************************************/
671		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
672	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
674	#endif	907	#endif
675	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	909	# include "ev_epoll.c"
…		…
693	{	926	{
694	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
695	}	928	}
696		929
697	/* 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 */
698	static int	931	int inline_size
699	enable_secure (void)	932	enable_secure (void)
700	{	933	{
701	#ifdef WIN32	934	#ifdef _WIN32
702	return 0;	935	return 0;
703	#else	936	#else
704	return getuid () != geteuid ()	937	return getuid () != geteuid ()
705	|| getgid () != getegid ();	938	|| getgid () != getegid ();
706	#endif	939	#endif
707	}	940	}
708		941
709	int	942	unsigned int
710	ev_method (EV_P)	943	ev_supported_backends (void)
711	{	944	{
712	return method;	945	unsigned int flags = 0;
713	}
714		946
715	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
716	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)
717	{	958	{
718	if (!method)	959	unsigned int flags = ev_supported_backends ();
		960
		961	#ifndef __NetBSD__
		962	/* kqueue is borked on everything but netbsd apparently */
		963	/* it usually doesn't work correctly on anything but sockets and pipes */
		964	flags &= ~EVBACKEND_KQUEUE;
		965	#endif
		966	#ifdef __APPLE__
		967	// flags &= ~EVBACKEND_KQUEUE; for documentation
		968	flags &= ~EVBACKEND_POLL;
		969	#endif
		970
		971	return flags;
		972	}
		973
		974	unsigned int
		975	ev_embeddable_backends (void)
		976	{
		977	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		978
		979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	return flags;
		984	}
		985
		986	unsigned int
		987	ev_backend (EV_P)
		988	{
		989	return backend;
		990	}
		991
		992	unsigned int
		993	ev_loop_count (EV_P)
		994	{
		995	return loop_count;
		996	}
		997
		998	void
		999	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	io_blocktime = interval;
		1002	}
		1003
		1004	void
		1005	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1006	{
		1007	timeout_blocktime = interval;
		1008	}
		1009
		1010	static void noinline
		1011	loop_init (EV_P_ unsigned int flags)
		1012	{
		1013	if (!backend)
719	{	1014	{
720	#if EV_USE_MONOTONIC	1015	#if EV_USE_MONOTONIC
721	{	1016	{
722	struct timespec ts;	1017	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1018	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	1019	have_monotonic = 1;
725	}	1020	}
726	#endif	1021	#endif
727		1022
728	rt_now = ev_time ();	1023	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	1024	mn_now = get_clock ();
730	now_floor = mn_now;	1025	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	1026	rtmn_diff = ev_rt_now - mn_now;
732		1027
733	if (methods == EVMETHOD_AUTO)	1028	io_blocktime = 0.;
734	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1029	timeout_blocktime = 0.;
		1030
		1031	/* pid check not overridable via env */
		1032	#ifndef _WIN32
		1033	if (flags & EVFLAG_FORKCHECK)
		1034	curpid = getpid ();
		1035	#endif
		1036
		1037	if (!(flags & EVFLAG_NOENV)
		1038	&& !enable_secure ()
		1039	&& getenv ("LIBEV_FLAGS"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	1040	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		1041
739	method = 0;	1042	if (!(flags & 0x0000ffffUL))
		1043	flags |= ev_recommended_backends ();
		1044
		1045	backend = 0;
		1046	backend_fd = -1;
740	#if EV_USE_WIN32	1047	#if EV_USE_INOTIFY
741	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1048	fs_fd = -2;
		1049	#endif
		1050
		1051	#if EV_USE_PORT
		1052	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
742	#endif	1053	#endif
743	#if EV_USE_KQUEUE	1054	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1055	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	1056	#endif
746	#if EV_USE_EPOLL	1057	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1058	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	1059	#endif
749	#if EV_USE_POLL	1060	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1061	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	1062	#endif
752	#if EV_USE_SELECT	1063	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1064	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	1065	#endif
755		1066
756	ev_init (&sigev, sigcb);	1067	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	1068	ev_set_priority (&sigev, EV_MAXPRI);
758	}	1069	}
759	}	1070	}
760		1071
761	void	1072	static void noinline
762	loop_destroy (EV_P)	1073	loop_destroy (EV_P)
763	{	1074	{
764	int i;	1075	int i;
765		1076
766	#if EV_USE_WIN32	1077	#if EV_USE_INOTIFY
767	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1078	if (fs_fd >= 0)
		1079	close (fs_fd);
		1080	#endif
		1081
		1082	if (backend_fd >= 0)
		1083	close (backend_fd);
		1084
		1085	#if EV_USE_PORT
		1086	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
768	#endif	1087	#endif
769	#if EV_USE_KQUEUE	1088	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1089	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	1090	#endif
772	#if EV_USE_EPOLL	1091	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1092	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	1093	#endif
775	#if EV_USE_POLL	1094	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1095	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	1096	#endif
778	#if EV_USE_SELECT	1097	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1098	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	1099	#endif
781		1100
782	for (i = NUMPRI; i--; )	1101	for (i = NUMPRI; i--; )
		1102	{
783	array_free (pending, [i]);	1103	array_free (pending, [i]);
		1104	#if EV_IDLE_ENABLE
		1105	array_free (idle, [i]);
		1106	#endif
		1107	}
		1108
		1109	ev_free (anfds); anfdmax = 0;
784		1110
785	/* have to use the microsoft-never-gets-it-right macro */	1111	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	1112	array_free (fdchange, EMPTY);
787	array_free_microshit (timer);	1113	array_free (timer, EMPTY);
788	array_free_microshit (periodic);	1114	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	1115	array_free (periodic, EMPTY);
790	array_free_microshit (prepare);	1116	#endif
791	array_free_microshit (check);	1117	#if EV_FORK_ENABLE
		1118	array_free (fork, EMPTY);
		1119	#endif
		1120	array_free (prepare, EMPTY);
		1121	array_free (check, EMPTY);
792		1122
793	method = 0;	1123	backend = 0;
794	}	1124	}
795		1125
796	static void	1126	void inline_size infy_fork (EV_P);
		1127
		1128	void inline_size
797	loop_fork (EV_P)	1129	loop_fork (EV_P)
798	{	1130	{
		1131	#if EV_USE_PORT
		1132	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1133	#endif
		1134	#if EV_USE_KQUEUE
		1135	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1136	#endif
799	#if EV_USE_EPOLL	1137	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1138	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801	#endif	1139	#endif
802	#if EV_USE_KQUEUE	1140	#if EV_USE_INOTIFY
803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1141	infy_fork (EV_A);
804	#endif	1142	#endif
805		1143
806	if (ev_is_active (&sigev))	1144	if (ev_is_active (&sigev))
807	{	1145	{
808	/* default loop */	1146	/* default loop */
…		…
821	postfork = 0;	1159	postfork = 0;
822	}	1160	}
823		1161
824	#if EV_MULTIPLICITY	1162	#if EV_MULTIPLICITY
825	struct ev_loop *	1163	struct ev_loop *
826	ev_loop_new (int methods)	1164	ev_loop_new (unsigned int flags)
827	{	1165	{
828	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1166	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
829		1167
830	memset (loop, 0, sizeof (struct ev_loop));	1168	memset (loop, 0, sizeof (struct ev_loop));
831		1169
832	loop_init (EV_A_ methods);	1170	loop_init (EV_A_ flags);
833		1171
834	if (ev_method (EV_A))	1172	if (ev_backend (EV_A))
835	return loop;	1173	return loop;
836		1174
837	return 0;	1175	return 0;
838	}	1176	}
839		1177
…		…
852		1190
853	#endif	1191	#endif
854		1192
855	#if EV_MULTIPLICITY	1193	#if EV_MULTIPLICITY
856	struct ev_loop *	1194	struct ev_loop *
		1195	ev_default_loop_init (unsigned int flags)
857	#else	1196	#else
858	int	1197	int
		1198	ev_default_loop (unsigned int flags)
859	#endif	1199	#endif
860	ev_default_loop (int methods)
861	{	1200	{
862	if (sigpipe [0] == sigpipe [1])	1201	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	1202	if (pipe (sigpipe))
864	return 0;	1203	return 0;
865		1204
866	if (!default_loop)	1205	if (!ev_default_loop_ptr)
867	{	1206	{
868	#if EV_MULTIPLICITY	1207	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1208	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1209	#else
871	default_loop = 1;	1210	ev_default_loop_ptr = 1;
872	#endif	1211	#endif
873		1212
874	loop_init (EV_A_ methods);	1213	loop_init (EV_A_ flags);
875		1214
876	if (ev_method (EV_A))	1215	if (ev_backend (EV_A))
877	{	1216	{
878	siginit (EV_A);	1217	siginit (EV_A);
879		1218
880	#ifndef WIN32	1219	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1220	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1221	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1222	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1223	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1224	#endif
886	}	1225	}
887	else	1226	else
888	default_loop = 0;	1227	ev_default_loop_ptr = 0;
889	}	1228	}
890		1229
891	return default_loop;	1230	return ev_default_loop_ptr;
892	}	1231	}
893		1232
894	void	1233	void
895	ev_default_destroy (void)	1234	ev_default_destroy (void)
896	{	1235	{
897	#if EV_MULTIPLICITY	1236	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1237	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1238	#endif
900		1239
901	#ifndef WIN32	1240	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1241	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1242	ev_signal_stop (EV_A_ &childev);
904	#endif	1243	#endif
905		1244
906	ev_ref (EV_A); /* signal watcher */	1245	ev_ref (EV_A); /* signal watcher */
…		…
914		1253
915	void	1254	void
916	ev_default_fork (void)	1255	ev_default_fork (void)
917	{	1256	{
918	#if EV_MULTIPLICITY	1257	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1258	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1259	#endif
921		1260
922	if (method)	1261	if (backend)
923	postfork = 1;	1262	postfork = 1;
924	}	1263	}
925		1264
926	/*****************************************************************************/	1265	/*****************************************************************************/
927		1266
928	static int	1267	void
929	any_pending (EV_P)	1268	ev_invoke (EV_P_ void *w, int revents)
930	{	1269	{
931	int pri;	1270	EV_CB_INVOKE ((W)w, revents);
932
933	for (pri = NUMPRI; pri--; )
934	if (pendingcnt [pri])
935	return 1;
936
937	return 0;
938	}	1271	}
939		1272
940	static void	1273	void inline_speed
941	call_pending (EV_P)	1274	call_pending (EV_P)
942	{	1275	{
943	int pri;	1276	int pri;
944		1277
945	for (pri = NUMPRI; pri--; )	1278	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1279	while (pendingcnt [pri])
947	{	1280	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1281	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1282
950	if (p->w)	1283	if (expect_true (p->w))
951	{	1284	{
		1285	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1286
952	p->w->pending = 0;	1287	p->w->pending = 0;
953	EV_CB_INVOKE (p->w, p->events);	1288	EV_CB_INVOKE (p->w, p->events);
954	}	1289	}
955	}	1290	}
956	}	1291	}
957		1292
958	static void	1293	void inline_size
959	timers_reify (EV_P)	1294	timers_reify (EV_P)
960	{	1295	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1296	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1297	{
963	struct ev_timer *w = timers [0];	1298	ev_timer *w = (ev_timer *)timers [0];
964		1299
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1300	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
966		1301
967	/* first reschedule or stop timer */	1302	/* first reschedule or stop timer */
968	if (w->repeat)	1303	if (w->repeat)
969	{	1304	{
970	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1305	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1306
971	((WT)w)->at = mn_now + w->repeat;	1307	((WT)w)->at += w->repeat;
		1308	if (((WT)w)->at < mn_now)
		1309	((WT)w)->at = mn_now;
		1310
972	downheap ((WT *)timers, timercnt, 0);	1311	downheap (timers, timercnt, 0);
973	}	1312	}
974	else	1313	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1314	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1315
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1316	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1317	}
979	}	1318	}
980		1319
981	static void	1320	#if EV_PERIODIC_ENABLE
		1321	void inline_size
982	periodics_reify (EV_P)	1322	periodics_reify (EV_P)
983	{	1323	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1324	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1325	{
986	struct ev_periodic *w = periodics [0];	1326	ev_periodic *w = (ev_periodic *)periodics [0];
987		1327
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1328	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
989		1329
990	/* first reschedule or stop timer */	1330	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1331	if (w->reschedule_cb)
992	{	1332	{
993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1333	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
994
995	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1334	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996	downheap ((WT *)periodics, periodiccnt, 0);	1335	downheap (periodics, periodiccnt, 0);
997	}	1336	}
998	else if (w->interval)	1337	else if (w->interval)
999	{	1338	{
1000	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1339	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1340	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1001	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1341	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1002	downheap ((WT *)periodics, periodiccnt, 0);	1342	downheap (periodics, periodiccnt, 0);
1003	}	1343	}
1004	else	1344	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1345	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1346
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1347	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1348	}
1009	}	1349	}
1010		1350
1011	static void	1351	static void noinline
1012	periodics_reschedule (EV_P)	1352	periodics_reschedule (EV_P)
1013	{	1353	{
1014	int i;	1354	int i;
1015		1355
1016	/* adjust periodics after time jump */	1356	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1357	for (i = 0; i < periodiccnt; ++i)
1018	{	1358	{
1019	struct ev_periodic *w = periodics [i];	1359	ev_periodic *w = (ev_periodic *)periodics [i];
1020		1360
1021	if (w->reschedule_cb)	1361	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1363	else if (w->interval)
1024	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1364	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1025	}	1365	}
1026		1366
1027	/* now rebuild the heap */	1367	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1368	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1369	downheap (periodics, periodiccnt, i);
1030	}	1370	}
		1371	#endif
1031		1372
1032	inline int	1373	#if EV_IDLE_ENABLE
1033	time_update_monotonic (EV_P)	1374	void inline_size
		1375	idle_reify (EV_P)
1034	{	1376	{
1035	mn_now = get_clock ();	1377	if (expect_false (idleall))
1036
1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038	{
1039	rt_now = rtmn_diff + mn_now;
1040	return 0;
1041	}	1378	{
1042	else	1379	int pri;
		1380
		1381	for (pri = NUMPRI; pri--; )
		1382	{
		1383	if (pendingcnt [pri])
		1384	break;
		1385
		1386	if (idlecnt [pri])
		1387	{
		1388	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1389	break;
		1390	}
		1391	}
1043	{	1392	}
1044	now_floor = mn_now;
1045	rt_now = ev_time ();
1046	return 1;
1047	}
1048	}	1393	}
		1394	#endif
1049		1395
1050	static void	1396	void inline_speed
1051	time_update (EV_P)	1397	time_update (EV_P_ ev_tstamp max_block)
1052	{	1398	{
1053	int i;	1399	int i;
1054		1400
1055	#if EV_USE_MONOTONIC	1401	#if EV_USE_MONOTONIC
1056	if (expect_true (have_monotonic))	1402	if (expect_true (have_monotonic))
1057	{	1403	{
1058	if (time_update_monotonic (EV_A))	1404	ev_tstamp odiff = rtmn_diff;
		1405
		1406	mn_now = get_clock ();
		1407
		1408	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1409	/* interpolate in the meantime */
		1410	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1059	{	1411	{
1060	ev_tstamp odiff = rtmn_diff;	1412	ev_rt_now = rtmn_diff + mn_now;
		1413	return;
		1414	}
1061		1415
		1416	now_floor = mn_now;
		1417	ev_rt_now = ev_time ();
		1418
1062	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1419	/* loop a few times, before making important decisions.
		1420	* on the choice of "4": one iteration isn't enough,
		1421	* in case we get preempted during the calls to
		1422	* ev_time and get_clock. a second call is almost guaranteed
		1423	* to succeed in that case, though. and looping a few more times
		1424	* doesn't hurt either as we only do this on time-jumps or
		1425	* in the unlikely event of having been preempted here.
		1426	*/
		1427	for (i = 4; --i; )
1063	{	1428	{
1064	rtmn_diff = rt_now - mn_now;	1429	rtmn_diff = ev_rt_now - mn_now;
1065		1430
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1431	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1432	return; /* all is well */
1068		1433
1069	rt_now = ev_time ();	1434	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1435	mn_now = get_clock ();
1071	now_floor = mn_now;	1436	now_floor = mn_now;
1072	}	1437	}
1073		1438
		1439	# if EV_PERIODIC_ENABLE
		1440	periodics_reschedule (EV_A);
		1441	# endif
		1442	/* no timer adjustment, as the monotonic clock doesn't jump */
		1443	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	ev_rt_now = ev_time ();
		1449
		1450	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1451	{
		1452	#if EV_PERIODIC_ENABLE
1074	periodics_reschedule (EV_A);	1453	periodics_reschedule (EV_A);
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1454	#endif
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1455	/* adjust timers. this is easy, as the offset is the same for all of them */
		1456	for (i = 0; i < timercnt; ++i)
		1457	((WT)timers [i])->at += ev_rt_now - mn_now;
1077	}	1458	}
1078	}
1079	else
1080	#endif
1081	{
1082	rt_now = ev_time ();
1083		1459
1084	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1085	{
1086	periodics_reschedule (EV_A);
1087
1088	/* adjust timers. this is easy, as the offset is the same for all */
1089	for (i = 0; i < timercnt; ++i)
1090	((WT)timers [i])->at += rt_now - mn_now;
1091	}
1092
1093	mn_now = rt_now;	1460	mn_now = ev_rt_now;
1094	}	1461	}
1095	}	1462	}
1096		1463
1097	void	1464	void
1098	ev_ref (EV_P)	1465	ev_ref (EV_P)
…		…
1109	static int loop_done;	1476	static int loop_done;
1110		1477
1111	void	1478	void
1112	ev_loop (EV_P_ int flags)	1479	ev_loop (EV_P_ int flags)
1113	{	1480	{
1114	double block;
1115	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1481	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1482	? EVUNLOOP_ONE
		1483	: EVUNLOOP_CANCEL;
		1484
		1485	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1116		1486
1117	do	1487	do
1118	{	1488	{
		1489	#ifndef _WIN32
		1490	if (expect_false (curpid)) /* penalise the forking check even more */
		1491	if (expect_false (getpid () != curpid))
		1492	{
		1493	curpid = getpid ();
		1494	postfork = 1;
		1495	}
		1496	#endif
		1497
		1498	#if EV_FORK_ENABLE
		1499	/* we might have forked, so queue fork handlers */
		1500	if (expect_false (postfork))
		1501	if (forkcnt)
		1502	{
		1503	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1504	call_pending (EV_A);
		1505	}
		1506	#endif
		1507
1119	/* queue check watchers (and execute them) */	1508	/* queue prepare watchers (and execute them) */
1120	if (expect_false (preparecnt))	1509	if (expect_false (preparecnt))
1121	{	1510	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1511	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1123	call_pending (EV_A);	1512	call_pending (EV_A);
1124	}	1513	}
1125		1514
		1515	if (expect_false (!activecnt))
		1516	break;
		1517
1126	/* we might have forked, so reify kernel state if necessary */	1518	/* we might have forked, so reify kernel state if necessary */
1127	if (expect_false (postfork))	1519	if (expect_false (postfork))
1128	loop_fork (EV_A);	1520	loop_fork (EV_A);
1129		1521
1130	/* update fd-related kernel structures */	1522	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1523	fd_reify (EV_A);
1132		1524
1133	/* calculate blocking time */	1525	/* calculate blocking time */
		1526	{
		1527	ev_tstamp waittime = 0.;
		1528	ev_tstamp sleeptime = 0.;
1134		1529
1135	/* we only need this for !monotonic clock or timers, but as we basically	1530	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1136	always have timers, we just calculate it always */
1137	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);
1140	else
1141	#endif
1142	{	1531	{
1143	rt_now = ev_time ();	1532	/* update time to cancel out callback processing overhead */
1144	mn_now = rt_now;	1533	time_update (EV_A_ 1e100);
1145	}
1146		1534
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1535	waittime = MAX_BLOCKTIME;
1152		1536
1153	if (timercnt)	1537	if (timercnt)
1154	{	1538	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1539	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1540	if (waittime > to) waittime = to;
1157	}	1541	}
1158		1542
		1543	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1544	if (periodiccnt)
1160	{	1545	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1546	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1547	if (waittime > to) waittime = to;
1163	}	1548	}
		1549	#endif
1164		1550
1165	if (block < 0.) block = 0.;	1551	if (expect_false (waittime < timeout_blocktime))
		1552	waittime = timeout_blocktime;
		1553
		1554	sleeptime = waittime - backend_fudge;
		1555
		1556	if (expect_true (sleeptime > io_blocktime))
		1557	sleeptime = io_blocktime;
		1558
		1559	if (sleeptime)
		1560	{
		1561	ev_sleep (sleeptime);
		1562	waittime -= sleeptime;
		1563	}
1166	}	1564	}
1167		1565
1168	method_poll (EV_A_ block);	1566	++loop_count;
		1567	backend_poll (EV_A_ waittime);
1169		1568
1170	/* update rt_now, do magic */	1569	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1570	time_update (EV_A_ waittime + sleeptime);
		1571	}
1172		1572
1173	/* queue pending timers and reschedule them */	1573	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1574	timers_reify (EV_A); /* relative timers called last */
		1575	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1576	periodics_reify (EV_A); /* absolute timers called first */
		1577	#endif
1176		1578
		1579	#if EV_IDLE_ENABLE
1177	/* queue idle watchers unless io or timers are pending */	1580	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1581	idle_reify (EV_A);
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1582	#endif
1180		1583
1181	/* queue check watchers, to be executed first */	1584	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1585	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1586	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1587
1185	call_pending (EV_A);	1588	call_pending (EV_A);
		1589
1186	}	1590	}
1187	while (activecnt && !loop_done);	1591	while (expect_true (activecnt && !loop_done));
1188		1592
1189	if (loop_done != 2)	1593	if (loop_done == EVUNLOOP_ONE)
1190	loop_done = 0;	1594	loop_done = EVUNLOOP_CANCEL;
1191	}	1595	}
1192		1596
1193	void	1597	void
1194	ev_unloop (EV_P_ int how)	1598	ev_unloop (EV_P_ int how)
1195	{	1599	{
1196	loop_done = how;	1600	loop_done = how;
1197	}	1601	}
1198		1602
1199	/*****************************************************************************/	1603	/*****************************************************************************/
1200		1604
1201	inline void	1605	void inline_size
1202	wlist_add (WL *head, WL elem)	1606	wlist_add (WL *head, WL elem)
1203	{	1607	{
1204	elem->next = *head;	1608	elem->next = *head;
1205	*head = elem;	1609	*head = elem;
1206	}	1610	}
1207		1611
1208	inline void	1612	void inline_size
1209	wlist_del (WL *head, WL elem)	1613	wlist_del (WL *head, WL elem)
1210	{	1614	{
1211	while (*head)	1615	while (*head)
1212	{	1616	{
1213	if (*head == elem)	1617	if (*head == elem)
…		…
1218		1622
1219	head = &(*head)->next;	1623	head = &(*head)->next;
1220	}	1624	}
1221	}	1625	}
1222		1626
1223	inline void	1627	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1628	clear_pending (EV_P_ W w)
1225	{	1629	{
1226	if (w->pending)	1630	if (w->pending)
1227	{	1631	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1632	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1633	w->pending = 0;
1230	}	1634	}
1231	}	1635	}
1232		1636
1233	inline void	1637	int
		1638	ev_clear_pending (EV_P_ void *w)
		1639	{
		1640	W w_ = (W)w;
		1641	int pending = w_->pending;
		1642
		1643	if (expect_true (pending))
		1644	{
		1645	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1646	w_->pending = 0;
		1647	p->w = 0;
		1648	return p->events;
		1649	}
		1650	else
		1651	return 0;
		1652	}
		1653
		1654	void inline_size
		1655	pri_adjust (EV_P_ W w)
		1656	{
		1657	int pri = w->priority;
		1658	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1659	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1660	w->priority = pri;
		1661	}
		1662
		1663	void inline_speed
1234	ev_start (EV_P_ W w, int active)	1664	ev_start (EV_P_ W w, int active)
1235	{	1665	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1666	pri_adjust (EV_A_ w);
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238
1239	w->active = active;	1667	w->active = active;
1240	ev_ref (EV_A);	1668	ev_ref (EV_A);
1241	}	1669	}
1242		1670
1243	inline void	1671	void inline_size
1244	ev_stop (EV_P_ W w)	1672	ev_stop (EV_P_ W w)
1245	{	1673	{
1246	ev_unref (EV_A);	1674	ev_unref (EV_A);
1247	w->active = 0;	1675	w->active = 0;
1248	}	1676	}
1249		1677
1250	/*****************************************************************************/	1678	/*****************************************************************************/
1251		1679
1252	void	1680	void noinline
1253	ev_io_start (EV_P_ struct ev_io *w)	1681	ev_io_start (EV_P_ ev_io *w)
1254	{	1682	{
1255	int fd = w->fd;	1683	int fd = w->fd;
1256		1684
1257	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
1258	return;	1686	return;
1259		1687
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1688	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1689
1262	ev_start (EV_A_ (W)w, 1);	1690	ev_start (EV_A_ (W)w, 1);
1263	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1691	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1264	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1692	wlist_add (&anfds[fd].head, (WL)w);
1265		1693
1266	fd_change (EV_A_ fd);	1694	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1695	w->events &= ~EV_IOFDSET;
1267	}	1696	}
1268		1697
1269	void	1698	void noinline
1270	ev_io_stop (EV_P_ struct ev_io *w)	1699	ev_io_stop (EV_P_ ev_io *w)
1271	{	1700	{
1272	ev_clear_pending (EV_A_ (W)w);	1701	clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1274	return;	1703	return;
1275		1704
		1705	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1706
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1707	wlist_del (&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1278		1709
1279	fd_change (EV_A_ w->fd);	1710	fd_change (EV_A_ w->fd, 1);
1280	}	1711	}
1281		1712
1282	void	1713	void noinline
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1714	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1715	{
1285	if (ev_is_active (w))	1716	if (expect_false (ev_is_active (w)))
1286	return;	1717	return;
1287		1718
1288	((WT)w)->at += mn_now;	1719	((WT)w)->at += mn_now;
1289		1720
1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1721	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291		1722
1292	ev_start (EV_A_ (W)w, ++timercnt);	1723	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1724	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1725	timers [timercnt - 1] = (WT)w;
1295	upheap ((WT *)timers, timercnt - 1);	1726	upheap (timers, timercnt - 1);
1296		1727
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1728	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1298	}	1729	}
1299		1730
1300	void	1731	void noinline
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1732	ev_timer_stop (EV_P_ ev_timer *w)
1302	{	1733	{
1303	ev_clear_pending (EV_A_ (W)w);	1734	clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))	1735	if (expect_false (!ev_is_active (w)))
1305	return;	1736	return;
1306		1737
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1308		1739
1309	if (((W)w)->active < timercnt--)	1740	{
		1741	int active = ((W)w)->active;
		1742
		1743	if (expect_true (--active < --timercnt))
1310	{	1744	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1745	timers [active] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1746	adjustheap (timers, timercnt, active);
1313	}	1747	}
		1748	}
1314		1749
1315	((WT)w)->at = w->repeat;	1750	((WT)w)->at -= mn_now;
1316		1751
1317	ev_stop (EV_A_ (W)w);	1752	ev_stop (EV_A_ (W)w);
1318	}	1753	}
1319		1754
1320	void	1755	void noinline
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1756	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1757	{
1323	if (ev_is_active (w))	1758	if (ev_is_active (w))
1324	{	1759	{
1325	if (w->repeat)	1760	if (w->repeat)
1326	{	1761	{
1327	((WT)w)->at = mn_now + w->repeat;	1762	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1763	adjustheap (timers, timercnt, ((W)w)->active - 1);
1329	}	1764	}
1330	else	1765	else
1331	ev_timer_stop (EV_A_ w);	1766	ev_timer_stop (EV_A_ w);
1332	}	1767	}
1333	else if (w->repeat)	1768	else if (w->repeat)
		1769	{
		1770	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1771	ev_timer_start (EV_A_ w);
		1772	}
1335	}	1773	}
1336		1774
1337	void	1775	#if EV_PERIODIC_ENABLE
		1776	void noinline
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1777	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1778	{
1340	if (ev_is_active (w))	1779	if (expect_false (ev_is_active (w)))
1341	return;	1780	return;
1342		1781
1343	if (w->reschedule_cb)	1782	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1783	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1784	else if (w->interval)
1346	{	1785	{
1347	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1786	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1348	/* this formula differs from the one in periodic_reify because we do not always round up */	1787	/* this formula differs from the one in periodic_reify because we do not always round up */
1349	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1788	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1350	}	1789	}
		1790	else
		1791	((WT)w)->at = w->offset;
1351		1792
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1793	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1794	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1795	periodics [periodiccnt - 1] = (WT)w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1796	upheap (periodics, periodiccnt - 1);
1356		1797
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1798	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1358	}	1799	}
1359		1800
1360	void	1801	void noinline
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1802	ev_periodic_stop (EV_P_ ev_periodic *w)
1362	{	1803	{
1363	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))	1805	if (expect_false (!ev_is_active (w)))
1365	return;	1806	return;
1366		1807
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1368		1809
1369	if (((W)w)->active < periodiccnt--)	1810	{
		1811	int active = ((W)w)->active;
		1812
		1813	if (expect_true (--active < --periodiccnt))
1370	{	1814	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1815	periodics [active] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1816	adjustheap (periodics, periodiccnt, active);
1373	}	1817	}
		1818	}
1374		1819
1375	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1376	}	1821	}
1377		1822
1378	void	1823	void noinline
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1824	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1825	{
		1826	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1827	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1828	ev_periodic_start (EV_A_ w);
1383	}	1829	}
1384		1830	#endif
1385	void
1386	ev_idle_start (EV_P_ struct ev_idle *w)
1387	{
1388	if (ev_is_active (w))
1389	return;
1390
1391	ev_start (EV_A_ (W)w, ++idlecnt);
1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1393	idles [idlecnt - 1] = w;
1394	}
1395
1396	void
1397	ev_idle_stop (EV_P_ struct ev_idle *w)
1398	{
1399	ev_clear_pending (EV_A_ (W)w);
1400	if (ev_is_active (w))
1401	return;
1402
1403	idles [((W)w)->active - 1] = idles [--idlecnt];
1404	ev_stop (EV_A_ (W)w);
1405	}
1406
1407	void
1408	ev_prepare_start (EV_P_ struct ev_prepare *w)
1409	{
1410	if (ev_is_active (w))
1411	return;
1412
1413	ev_start (EV_A_ (W)w, ++preparecnt);
1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1415	prepares [preparecnt - 1] = w;
1416	}
1417
1418	void
1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1420	{
1421	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))
1423	return;
1424
1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1426	ev_stop (EV_A_ (W)w);
1427	}
1428
1429	void
1430	ev_check_start (EV_P_ struct ev_check *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++checkcnt);
1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1437	checks [checkcnt - 1] = w;
1438	}
1439
1440	void
1441	ev_check_stop (EV_P_ struct ev_check *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	checks [((W)w)->active - 1] = checks [--checkcnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450		1831
1451	#ifndef SA_RESTART	1832	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1833	# define SA_RESTART 0
1453	#endif	1834	#endif
1454		1835
1455	void	1836	void noinline
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1837	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1838	{
1458	#if EV_MULTIPLICITY	1839	#if EV_MULTIPLICITY
1459	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1840	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1460	#endif	1841	#endif
1461	if (ev_is_active (w))	1842	if (expect_false (ev_is_active (w)))
1462	return;	1843	return;
1463		1844
1464	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1845	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1465		1846
		1847	{
		1848	#ifndef _WIN32
		1849	sigset_t full, prev;
		1850	sigfillset (&full);
		1851	sigprocmask (SIG_SETMASK, &full, &prev);
		1852	#endif
		1853
		1854	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1855
		1856	#ifndef _WIN32
		1857	sigprocmask (SIG_SETMASK, &prev, 0);
		1858	#endif
		1859	}
		1860
1466	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1862	wlist_add (&signals [w->signum - 1].head, (WL)w);
1469		1863
1470	if (!((WL)w)->next)	1864	if (!((WL)w)->next)
1471	{	1865	{
1472	#if WIN32	1866	#if _WIN32
1473	signal (w->signum, sighandler);	1867	signal (w->signum, sighandler);
1474	#else	1868	#else
1475	struct sigaction sa;	1869	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1870	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1871	sigfillset (&sa.sa_mask);
…		…
1479	sigaction (w->signum, &sa, 0);	1873	sigaction (w->signum, &sa, 0);
1480	#endif	1874	#endif
1481	}	1875	}
1482	}	1876	}
1483		1877
1484	void	1878	void noinline
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1879	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1880	{
1487	ev_clear_pending (EV_A_ (W)w);	1881	clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1882	if (expect_false (!ev_is_active (w)))
1489	return;	1883	return;
1490		1884
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1885	wlist_del (&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1493		1887
1494	if (!signals [w->signum - 1].head)	1888	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1889	signal (w->signum, SIG_DFL);
1496	}	1890	}
1497		1891
1498	void	1892	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1893	ev_child_start (EV_P_ ev_child *w)
1500	{	1894	{
1501	#if EV_MULTIPLICITY	1895	#if EV_MULTIPLICITY
1502	assert (("child watchers are only supported in the default loop", loop == default_loop));	1896	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1897	#endif
1504	if (ev_is_active (w))	1898	if (expect_false (ev_is_active (w)))
1505	return;	1899	return;
1506		1900
1507	ev_start (EV_A_ (W)w, 1);	1901	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1902	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1509	}	1903	}
1510		1904
1511	void	1905	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1906	ev_child_stop (EV_P_ ev_child *w)
1513	{	1907	{
1514	ev_clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1909	if (expect_false (!ev_is_active (w)))
1516	return;	1910	return;
1517		1911
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1913	ev_stop (EV_A_ (W)w);
1520	}	1914	}
1521		1915
		1916	#if EV_STAT_ENABLE
		1917
		1918	# ifdef _WIN32
		1919	# undef lstat
		1920	# define lstat(a,b) _stati64 (a,b)
		1921	# endif
		1922
		1923	#define DEF_STAT_INTERVAL 5.0074891
		1924	#define MIN_STAT_INTERVAL 0.1074891
		1925
		1926	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1927
		1928	#if EV_USE_INOTIFY
		1929	# define EV_INOTIFY_BUFSIZE 8192
		1930
		1931	static void noinline
		1932	infy_add (EV_P_ ev_stat *w)
		1933	{
		1934	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1935
		1936	if (w->wd < 0)
		1937	{
		1938	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1939
		1940	/* monitor some parent directory for speedup hints */
		1941	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1942	{
		1943	char path [4096];
		1944	strcpy (path, w->path);
		1945
		1946	do
		1947	{
		1948	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1949	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1950
		1951	char *pend = strrchr (path, '/');
		1952
		1953	if (!pend)
		1954	break; /* whoops, no '/', complain to your admin */
		1955
		1956	*pend = 0;
		1957	w->wd = inotify_add_watch (fs_fd, path, mask);
		1958	}
		1959	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1960	}
		1961	}
		1962	else
		1963	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1964
		1965	if (w->wd >= 0)
		1966	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1967	}
		1968
		1969	static void noinline
		1970	infy_del (EV_P_ ev_stat *w)
		1971	{
		1972	int slot;
		1973	int wd = w->wd;
		1974
		1975	if (wd < 0)
		1976	return;
		1977
		1978	w->wd = -2;
		1979	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1980	wlist_del (&fs_hash [slot].head, (WL)w);
		1981
		1982	/* remove this watcher, if others are watching it, they will rearm */
		1983	inotify_rm_watch (fs_fd, wd);
		1984	}
		1985
		1986	static void noinline
		1987	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1988	{
		1989	if (slot < 0)
		1990	/* overflow, need to check for all hahs slots */
		1991	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1992	infy_wd (EV_A_ slot, wd, ev);
		1993	else
		1994	{
		1995	WL w_;
		1996
		1997	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1998	{
		1999	ev_stat *w = (ev_stat *)w_;
		2000	w_ = w_->next; /* lets us remove this watcher and all before it */
		2001
		2002	if (w->wd == wd || wd == -1)
		2003	{
		2004	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2005	{
		2006	w->wd = -1;
		2007	infy_add (EV_A_ w); /* re-add, no matter what */
		2008	}
		2009
		2010	stat_timer_cb (EV_A_ &w->timer, 0);
		2011	}
		2012	}
		2013	}
		2014	}
		2015
		2016	static void
		2017	infy_cb (EV_P_ ev_io *w, int revents)
		2018	{
		2019	char buf [EV_INOTIFY_BUFSIZE];
		2020	struct inotify_event *ev = (struct inotify_event *)buf;
		2021	int ofs;
		2022	int len = read (fs_fd, buf, sizeof (buf));
		2023
		2024	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2025	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2026	}
		2027
		2028	void inline_size
		2029	infy_init (EV_P)
		2030	{
		2031	if (fs_fd != -2)
		2032	return;
		2033
		2034	fs_fd = inotify_init ();
		2035
		2036	if (fs_fd >= 0)
		2037	{
		2038	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2039	ev_set_priority (&fs_w, EV_MAXPRI);
		2040	ev_io_start (EV_A_ &fs_w);
		2041	}
		2042	}
		2043
		2044	void inline_size
		2045	infy_fork (EV_P)
		2046	{
		2047	int slot;
		2048
		2049	if (fs_fd < 0)
		2050	return;
		2051
		2052	close (fs_fd);
		2053	fs_fd = inotify_init ();
		2054
		2055	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2056	{
		2057	WL w_ = fs_hash [slot].head;
		2058	fs_hash [slot].head = 0;
		2059
		2060	while (w_)
		2061	{
		2062	ev_stat *w = (ev_stat *)w_;
		2063	w_ = w_->next; /* lets us add this watcher */
		2064
		2065	w->wd = -1;
		2066
		2067	if (fs_fd >= 0)
		2068	infy_add (EV_A_ w); /* re-add, no matter what */
		2069	else
		2070	ev_timer_start (EV_A_ &w->timer);
		2071	}
		2072
		2073	}
		2074	}
		2075
		2076	#endif
		2077
		2078	void
		2079	ev_stat_stat (EV_P_ ev_stat *w)
		2080	{
		2081	if (lstat (w->path, &w->attr) < 0)
		2082	w->attr.st_nlink = 0;
		2083	else if (!w->attr.st_nlink)
		2084	w->attr.st_nlink = 1;
		2085	}
		2086
		2087	static void noinline
		2088	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2089	{
		2090	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2091
		2092	/* we copy this here each the time so that */
		2093	/* prev has the old value when the callback gets invoked */
		2094	w->prev = w->attr;
		2095	ev_stat_stat (EV_A_ w);
		2096
		2097	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2098	if (
		2099	w->prev.st_dev != w->attr.st_dev
		2100	|| w->prev.st_ino != w->attr.st_ino
		2101	|| w->prev.st_mode != w->attr.st_mode
		2102	|| w->prev.st_nlink != w->attr.st_nlink
		2103	|| w->prev.st_uid != w->attr.st_uid
		2104	|| w->prev.st_gid != w->attr.st_gid
		2105	|| w->prev.st_rdev != w->attr.st_rdev
		2106	|| w->prev.st_size != w->attr.st_size
		2107	|| w->prev.st_atime != w->attr.st_atime
		2108	|| w->prev.st_mtime != w->attr.st_mtime
		2109	|| w->prev.st_ctime != w->attr.st_ctime
		2110	) {
		2111	#if EV_USE_INOTIFY
		2112	infy_del (EV_A_ w);
		2113	infy_add (EV_A_ w);
		2114	ev_stat_stat (EV_A_ w); /* avoid race... */
		2115	#endif
		2116
		2117	ev_feed_event (EV_A_ w, EV_STAT);
		2118	}
		2119	}
		2120
		2121	void
		2122	ev_stat_start (EV_P_ ev_stat *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	/* since we use memcmp, we need to clear any padding data etc. */
		2128	memset (&w->prev, 0, sizeof (ev_statdata));
		2129	memset (&w->attr, 0, sizeof (ev_statdata));
		2130
		2131	ev_stat_stat (EV_A_ w);
		2132
		2133	if (w->interval < MIN_STAT_INTERVAL)
		2134	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2135
		2136	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2137	ev_set_priority (&w->timer, ev_priority (w));
		2138
		2139	#if EV_USE_INOTIFY
		2140	infy_init (EV_A);
		2141
		2142	if (fs_fd >= 0)
		2143	infy_add (EV_A_ w);
		2144	else
		2145	#endif
		2146	ev_timer_start (EV_A_ &w->timer);
		2147
		2148	ev_start (EV_A_ (W)w, 1);
		2149	}
		2150
		2151	void
		2152	ev_stat_stop (EV_P_ ev_stat *w)
		2153	{
		2154	clear_pending (EV_A_ (W)w);
		2155	if (expect_false (!ev_is_active (w)))
		2156	return;
		2157
		2158	#if EV_USE_INOTIFY
		2159	infy_del (EV_A_ w);
		2160	#endif
		2161	ev_timer_stop (EV_A_ &w->timer);
		2162
		2163	ev_stop (EV_A_ (W)w);
		2164	}
		2165	#endif
		2166
		2167	#if EV_IDLE_ENABLE
		2168	void
		2169	ev_idle_start (EV_P_ ev_idle *w)
		2170	{
		2171	if (expect_false (ev_is_active (w)))
		2172	return;
		2173
		2174	pri_adjust (EV_A_ (W)w);
		2175
		2176	{
		2177	int active = ++idlecnt [ABSPRI (w)];
		2178
		2179	++idleall;
		2180	ev_start (EV_A_ (W)w, active);
		2181
		2182	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2183	idles [ABSPRI (w)][active - 1] = w;
		2184	}
		2185	}
		2186
		2187	void
		2188	ev_idle_stop (EV_P_ ev_idle *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	int active = ((W)w)->active;
		2196
		2197	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2198	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2199
		2200	ev_stop (EV_A_ (W)w);
		2201	--idleall;
		2202	}
		2203	}
		2204	#endif
		2205
		2206	void
		2207	ev_prepare_start (EV_P_ ev_prepare *w)
		2208	{
		2209	if (expect_false (ev_is_active (w)))
		2210	return;
		2211
		2212	ev_start (EV_A_ (W)w, ++preparecnt);
		2213	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2214	prepares [preparecnt - 1] = w;
		2215	}
		2216
		2217	void
		2218	ev_prepare_stop (EV_P_ ev_prepare *w)
		2219	{
		2220	clear_pending (EV_A_ (W)w);
		2221	if (expect_false (!ev_is_active (w)))
		2222	return;
		2223
		2224	{
		2225	int active = ((W)w)->active;
		2226	prepares [active - 1] = prepares [--preparecnt];
		2227	((W)prepares [active - 1])->active = active;
		2228	}
		2229
		2230	ev_stop (EV_A_ (W)w);
		2231	}
		2232
		2233	void
		2234	ev_check_start (EV_P_ ev_check *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++checkcnt);
		2240	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2241	checks [checkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_check_stop (EV_P_ ev_check *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	checks [active - 1] = checks [--checkcnt];
		2254	((W)checks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259
		2260	#if EV_EMBED_ENABLE
		2261	void noinline
		2262	ev_embed_sweep (EV_P_ ev_embed *w)
		2263	{
		2264	ev_loop (w->other, EVLOOP_NONBLOCK);
		2265	}
		2266
		2267	static void
		2268	embed_io_cb (EV_P_ ev_io *io, int revents)
		2269	{
		2270	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2271
		2272	if (ev_cb (w))
		2273	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2274	else
		2275	ev_loop (w->other, EVLOOP_NONBLOCK);
		2276	}
		2277
		2278	static void
		2279	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2280	{
		2281	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2282
		2283	{
		2284	struct ev_loop *loop = w->other;
		2285
		2286	while (fdchangecnt)
		2287	{
		2288	fd_reify (EV_A);
		2289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2290	}
		2291	}
		2292	}
		2293
		2294	#if 0
		2295	static void
		2296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2297	{
		2298	ev_idle_stop (EV_A_ idle);
		2299	}
		2300	#endif
		2301
		2302	void
		2303	ev_embed_start (EV_P_ ev_embed *w)
		2304	{
		2305	if (expect_false (ev_is_active (w)))
		2306	return;
		2307
		2308	{
		2309	struct ev_loop *loop = w->other;
		2310	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2312	}
		2313
		2314	ev_set_priority (&w->io, ev_priority (w));
		2315	ev_io_start (EV_A_ &w->io);
		2316
		2317	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2318	ev_set_priority (&w->prepare, EV_MINPRI);
		2319	ev_prepare_start (EV_A_ &w->prepare);
		2320
		2321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2322
		2323	ev_start (EV_A_ (W)w, 1);
		2324	}
		2325
		2326	void
		2327	ev_embed_stop (EV_P_ ev_embed *w)
		2328	{
		2329	clear_pending (EV_A_ (W)w);
		2330	if (expect_false (!ev_is_active (w)))
		2331	return;
		2332
		2333	ev_io_stop (EV_A_ &w->io);
		2334	ev_prepare_stop (EV_A_ &w->prepare);
		2335
		2336	ev_stop (EV_A_ (W)w);
		2337	}
		2338	#endif
		2339
		2340	#if EV_FORK_ENABLE
		2341	void
		2342	ev_fork_start (EV_P_ ev_fork *w)
		2343	{
		2344	if (expect_false (ev_is_active (w)))
		2345	return;
		2346
		2347	ev_start (EV_A_ (W)w, ++forkcnt);
		2348	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2349	forks [forkcnt - 1] = w;
		2350	}
		2351
		2352	void
		2353	ev_fork_stop (EV_P_ ev_fork *w)
		2354	{
		2355	clear_pending (EV_A_ (W)w);
		2356	if (expect_false (!ev_is_active (w)))
		2357	return;
		2358
		2359	{
		2360	int active = ((W)w)->active;
		2361	forks [active - 1] = forks [--forkcnt];
		2362	((W)forks [active - 1])->active = active;
		2363	}
		2364
		2365	ev_stop (EV_A_ (W)w);
		2366	}
		2367	#endif
		2368
1522	/*****************************************************************************/	2369	/*****************************************************************************/
1523		2370
1524	struct ev_once	2371	struct ev_once
1525	{	2372	{
1526	struct ev_io io;	2373	ev_io io;
1527	struct ev_timer to;	2374	ev_timer to;
1528	void (*cb)(int revents, void *arg);	2375	void (*cb)(int revents, void *arg);
1529	void *arg;	2376	void *arg;
1530	};	2377	};
1531		2378
1532	static void	2379	static void
…		…
1541		2388
1542	cb (revents, arg);	2389	cb (revents, arg);
1543	}	2390	}
1544		2391
1545	static void	2392	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	2393	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	2394	{
1548	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2395	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1549	}	2396	}
1550		2397
1551	static void	2398	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2399	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	2400	{
1554	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2401	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1555	}	2402	}
1556		2403
1557	void	2404	void
1558	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2405	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1559	{	2406	{
1560	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2407	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561		2408
1562	if (!once)	2409	if (expect_false (!once))
		2410	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2411	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	2412	return;
1565	{	2413	}
		2414
1566	once->cb = cb;	2415	once->cb = cb;
1567	once->arg = arg;	2416	once->arg = arg;
1568		2417
1569	ev_init (&once->io, once_cb_io);	2418	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	2419	if (fd >= 0)
1571	{	2420	{
1572	ev_io_set (&once->io, fd, events);	2421	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	2422	ev_io_start (EV_A_ &once->io);
1574	}	2423	}
1575		2424
1576	ev_init (&once->to, once_cb_to);	2425	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	2426	if (timeout >= 0.)
1578	{	2427	{
1579	ev_timer_set (&once->to, timeout, 0.);	2428	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	2429	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	2430	}
1583	}	2431	}
1584		2432
		2433	#if EV_MULTIPLICITY
		2434	#include "ev_wrap.h"
		2435	#endif
		2436
		2437	#ifdef __cplusplus
		2438	}
		2439	#endif
		2440

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