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Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 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
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
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	123	#ifdef EV_H
132	# include EV_H	124	# include EV_H
133	#else	125	#else
134	# include "ev.h"	126	# include "ev.h"
135	#endif	127	#endif
136		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
		231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		234
137	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
139	# define inline inline	237	# define noinline __attribute__ ((noinline))
140	#else	238	#else
141	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
142	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
143	#endif	244	#endif
144		245
145	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
147		255
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
151	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
154		265
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		267
		268	#ifdef _WIN32
157	#include "ev_win32.c"	269	# include "ev_win32.c"
		270	#endif
158		271
159	/*****************************************************************************/	272	/*****************************************************************************/
160		273
161	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
162		275
		276	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	278	{
165	syserr_cb = cb;	279	syserr_cb = cb;
166	}	280	}
167		281
168	static void	282	static void noinline
169	syserr (const char *msg)	283	syserr (const char *msg)
170	{	284	{
171	if (!msg)	285	if (!msg)
172	msg = "(libev) system error";	286	msg = "(libev) system error";
173		287
…		…
180	}	294	}
181	}	295	}
182		296
183	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
184		298
		299	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	301	{
187	alloc = cb;	302	alloc = cb;
188	}	303	}
189		304
190	static void *	305	inline_speed void *
191	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
192	{	307	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		309
195	if (!ptr && size)	310	if (!ptr && size)
…		…
209	typedef struct	324	typedef struct
210	{	325	{
211	WL head;	326	WL head;
212	unsigned char events;	327	unsigned char events;
213	unsigned char reify;	328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
214	} ANFD;	332	} ANFD;
215		333
216	typedef struct	334	typedef struct
217	{	335	{
218	W w;	336	W w;
219	int events;	337	int events;
220	} ANPENDING;	338	} ANPENDING;
221		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
222	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
223		348
224	struct ev_loop	349	struct ev_loop
225	{	350	{
226	ev_tstamp ev_rt_now;	351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
227	#define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
228	#include "ev_vars.h"	354	#include "ev_vars.h"
229	#undef VAR	355	#undef VAR
230	};	356	};
231	#include "ev_wrap.h"	357	#include "ev_wrap.h"
232		358
233	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
234	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
235		361
236	#else	362	#else
237		363
238	ev_tstamp ev_rt_now;	364	ev_tstamp ev_rt_now;
239	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
240	#include "ev_vars.h"	366	#include "ev_vars.h"
241	#undef VAR	367	#undef VAR
242		368
243	static int default_loop;	369	static int ev_default_loop_ptr;
244		370
245	#endif	371	#endif
246		372
247	/*****************************************************************************/	373	/*****************************************************************************/
248		374
249	inline ev_tstamp	375	ev_tstamp
250	ev_time (void)	376	ev_time (void)
251	{	377	{
252	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
253	struct timespec ts;	379	struct timespec ts;
254	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
258	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
259	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
260	#endif	386	#endif
261	}	387	}
262		388
263	inline ev_tstamp	389	ev_tstamp inline_size
264	get_clock (void)	390	get_clock (void)
265	{	391	{
266	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
267	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
268	{	394	{
…		…
281	{	407	{
282	return ev_rt_now;	408	return ev_rt_now;
283	}	409	}
284	#endif	410	#endif
285		411
286	#define array_roundsize(type,n) ((n) | 4 & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
287		439
288	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
289	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
290	{ \	442	{ \
291	int newcnt = cur; \	443	int ocur_ = (cur); \
292	do \	444	(base) = (type *)array_realloc \
293	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
294	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
295	} \
296	while ((cnt) > newcnt); \
297	\
298	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
299	init (base + cur, newcnt - cur); \
300	cur = newcnt; \
301	}	447	}
302		448
		449	#if 0
303	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
304	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
305	{ \	452	{ \
306	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
307	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
309	}	456	}
310		457	#endif
311	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
312	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
313	#define array_free_microshit(stem) \
314	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
315		458
316	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
317	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
318		461
319	/*****************************************************************************/	462	/*****************************************************************************/
320		463
321	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
322	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
323	{	494	{
324	while (count--)	495	while (count--)
325	{	496	{
326	base->head = 0;	497	base->head = 0;
…		…
329		500
330	++base;	501	++base;
331	}	502	}
332	}	503	}
333		504
334	void	505	void inline_speed
335	ev_feed_event (EV_P_ void *w, int revents)
336	{
337	W w_ = (W)w;
338
339	if (w_->pending)
340	{
341	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
342	return;
343	}
344
345	w_->pending = ++pendingcnt [ABSPRI (w_)];
346	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349	}
350
351	static void
352	queue_events (EV_P_ W *events, int eventcnt, int type)
353	{
354	int i;
355
356	for (i = 0; i < eventcnt; ++i)
357	ev_feed_event (EV_A_ events [i], type);
358	}
359
360	inline void
361	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
362	{	507	{
363	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	509	ev_io *w;
365		510
366	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
367	{	512	{
368	int ev = w->events & revents;	513	int ev = w->events & revents;
369		514
370	if (ev)	515	if (ev)
371	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
373	}	518	}
374		519
375	void	520	void
376	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
377	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
378	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
379	}	525	}
380		526
381	/*****************************************************************************/	527	void inline_size
382
383	static void
384	fd_reify (EV_P)	528	fd_reify (EV_P)
385	{	529	{
386	int i;	530	int i;
387		531
388	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
389	{	533	{
390	int fd = fdchanges [i];	534	int fd = fdchanges [i];
391	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
392	struct ev_io *w;	536	ev_io *w;
393		537
394	int events = 0;	538	int events = 0;
395		539
396	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
397	events |= w->events;	541	events |= w->events;
398		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
399	anfd->reify = 0;	552	anfd->reify = 0;
400		553
401	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
402	anfd->events = events;	555	anfd->events = events;
403	}	556	}
404		557
405	fdchangecnt = 0;	558	fdchangecnt = 0;
406	}	559	}
407		560
408	static void	561	void inline_size
409	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd, int flags)
410	{	563	{
411	if (anfds [fd].reify)	564	unsigned char reify = anfds [fd].reify;
412	return;
413
414	anfds [fd].reify = 1;	565	anfds [fd].reify |= flags | 1;
415		566
		567	if (expect_true (!reify))
		568	{
416	++fdchangecnt;	569	++fdchangecnt;
417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
		572	}
419	}	573	}
420		574
421	static void	575	void inline_speed
422	fd_kill (EV_P_ int fd)	576	fd_kill (EV_P_ int fd)
423	{	577	{
424	struct ev_io *w;	578	ev_io *w;
425		579
426	while ((w = (struct ev_io *)anfds [fd].head))	580	while ((w = (ev_io *)anfds [fd].head))
427	{	581	{
428	ev_io_stop (EV_A_ w);	582	ev_io_stop (EV_A_ w);
429	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	583	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
430	}	584	}
431	}	585	}
432		586
433	static int	587	int inline_size
434	fd_valid (int fd)	588	fd_valid (int fd)
435	{	589	{
436	#ifdef WIN32	590	#ifdef _WIN32
437	return !!win32_get_osfhandle (fd);	591	return _get_osfhandle (fd) != -1;
438	#else	592	#else
439	return fcntl (fd, F_GETFD) != -1;	593	return fcntl (fd, F_GETFD) != -1;
440	#endif	594	#endif
441	}	595	}
442		596
443	/* called on EBADF to verify fds */	597	/* called on EBADF to verify fds */
444	static void	598	static void noinline
445	fd_ebadf (EV_P)	599	fd_ebadf (EV_P)
446	{	600	{
447	int fd;	601	int fd;
448		602
449	for (fd = 0; fd < anfdmax; ++fd)	603	for (fd = 0; fd < anfdmax; ++fd)
…		…
451	if (!fd_valid (fd) == -1 && errno == EBADF)	605	if (!fd_valid (fd) == -1 && errno == EBADF)
452	fd_kill (EV_A_ fd);	606	fd_kill (EV_A_ fd);
453	}	607	}
454		608
455	/* called on ENOMEM in select/poll to kill some fds and retry */	609	/* called on ENOMEM in select/poll to kill some fds and retry */
456	static void	610	static void noinline
457	fd_enomem (EV_P)	611	fd_enomem (EV_P)
458	{	612	{
459	int fd;	613	int fd;
460		614
461	for (fd = anfdmax; fd--; )	615	for (fd = anfdmax; fd--; )
…		…
464	fd_kill (EV_A_ fd);	618	fd_kill (EV_A_ fd);
465	return;	619	return;
466	}	620	}
467	}	621	}
468		622
469	/* usually called after fork if method needs to re-arm all fds from scratch */	623	/* usually called after fork if backend needs to re-arm all fds from scratch */
470	static void	624	static void noinline
471	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
472	{	626	{
473	int fd;	627	int fd;
474		628
475	/* this should be highly optimised to not do anything but set a flag */
476	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
477	if (anfds [fd].events)	630	if (anfds [fd].events)
478	{	631	{
479	anfds [fd].events = 0;	632	anfds [fd].events = 0;
480	fd_change (EV_A_ fd);	633	fd_change (EV_A_ fd, EV_IOFDSET);
481	}	634	}
482	}	635	}
483		636
484	/*****************************************************************************/	637	/*****************************************************************************/
485		638
486	static void	639	void inline_speed
487	upheap (WT *heap, int k)	640	upheap (WT *heap, int k)
488	{	641	{
489	WT w = heap [k];	642	WT w = heap [k];
490		643
491	while (k && heap [k >> 1]->at > w->at)	644	while (k)
492	{	645	{
		646	int p = (k - 1) >> 1;
		647
		648	if (heap [p]->at <= w->at)
		649	break;
		650
493	heap [k] = heap [k >> 1];	651	heap [k] = heap [p];
494	((W)heap [k])->active = k + 1;	652	((W)heap [k])->active = k + 1;
495	k >>= 1;	653	k = p;
496	}	654	}
497		655
498	heap [k] = w;	656	heap [k] = w;
499	((W)heap [k])->active = k + 1;	657	((W)heap [k])->active = k + 1;
500
501	}	658	}
502		659
503	static void	660	void inline_speed
504	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
505	{	662	{
506	WT w = heap [k];	663	WT w = heap [k];
507		664
508	while (k < (N >> 1))	665	for (;;)
509	{	666	{
510	int j = k << 1;	667	int c = (k << 1) + 1;
511		668
512	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
513	++j;
514
515	if (w->at <= heap [j]->at)
516	break;	670	break;
517		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
518	heap [k] = heap [j];	678	heap [k] = heap [c];
519	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
520	k = j;	681	k = c;
521	}	682	}
522		683
523	heap [k] = w;	684	heap [k] = w;
524	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
525	}	686	}
526		687
527	inline void	688	void inline_size
528	adjustheap (WT *heap, int N, int k, ev_tstamp at)	689	adjustheap (WT *heap, int N, int k)
529	{	690	{
530	ev_tstamp old_at = heap [k]->at;	691	upheap (heap, k);
531	heap [k]->at = at;
532
533	if (old_at < at)
534	downheap (heap, N, k);	692	downheap (heap, N, k);
535	else
536	upheap (heap, k);
537	}	693	}
538		694
539	/*****************************************************************************/	695	/*****************************************************************************/
540		696
541	typedef struct	697	typedef struct
…		…
547	static ANSIG *signals;	703	static ANSIG *signals;
548	static int signalmax;	704	static int signalmax;
549		705
550	static int sigpipe [2];	706	static int sigpipe [2];
551	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
552	static struct ev_io sigev;	708	static ev_io sigev;
553		709
554	static void	710	void inline_size
555	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
556	{	712	{
557	while (count--)	713	while (count--)
558	{	714	{
559	base->head = 0;	715	base->head = 0;
…		…
564	}	720	}
565		721
566	static void	722	static void
567	sighandler (int signum)	723	sighandler (int signum)
568	{	724	{
569	#if WIN32	725	#if _WIN32
570	signal (signum, sighandler);	726	signal (signum, sighandler);
571	#endif	727	#endif
572		728
573	signals [signum - 1].gotsig = 1;	729	signals [signum - 1].gotsig = 1;
574		730
575	if (!gotsig)	731	if (!gotsig)
576	{	732	{
577	int old_errno = errno;	733	int old_errno = errno;
578	gotsig = 1;	734	gotsig = 1;
579	#ifdef WIN32
580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581	#else
582	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
583	#endif
584	errno = old_errno;	736	errno = old_errno;
585	}	737	}
586	}	738	}
587		739
588	void	740	void noinline
589	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
590	{	742	{
591	WL w;	743	WL w;
592		744
593	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
594	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
595	#endif	747	#endif
596		748
597	--signum;	749	--signum;
598		750
599	if (signum < 0 || signum >= signalmax)	751	if (signum < 0 || signum >= signalmax)
…		…
604	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
605	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
606	}	758	}
607		759
608	static void	760	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
610	{	762	{
611	int signum;	763	int signum;
612		764
613	#ifdef WIN32
614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615	#else
616	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
617	#endif
618	gotsig = 0;	766	gotsig = 0;
619		767
620	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
621	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
622	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
623	}	771	}
624		772
625	static void	773	void inline_speed
		774	fd_intern (int fd)
		775	{
		776	#ifdef _WIN32
		777	int arg = 1;
		778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		779	#else
		780	fcntl (fd, F_SETFD, FD_CLOEXEC);
		781	fcntl (fd, F_SETFL, O_NONBLOCK);
		782	#endif
		783	}
		784
		785	static void noinline
626	siginit (EV_P)	786	siginit (EV_P)
627	{	787	{
628	#ifndef WIN32	788	fd_intern (sigpipe [0]);
629	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	789	fd_intern (sigpipe [1]);
630	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
631
632	/* rather than sort out wether we really need nb, set it */
633	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
634	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
635	#endif
636		790
637	ev_io_set (&sigev, sigpipe [0], EV_READ);	791	ev_io_set (&sigev, sigpipe [0], EV_READ);
638	ev_io_start (EV_A_ &sigev);	792	ev_io_start (EV_A_ &sigev);
639	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
640	}	794	}
641		795
642	/*****************************************************************************/	796	/*****************************************************************************/
643		797
644	static struct ev_child *childs [PID_HASHSIZE];	798	static WL childs [EV_PID_HASHSIZE];
645		799
646	#ifndef WIN32	800	#ifndef _WIN32
647		801
648	static struct ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
649		818
650	#ifndef WCONTINUED	819	#ifndef WCONTINUED
651	# define WCONTINUED 0	820	# define WCONTINUED 0
652	#endif	821	#endif
653		822
654	static void	823	static void
655	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
656	{
657	struct ev_child *w;
658
659	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
660	if (w->pid == pid || !w->pid)
661	{
662	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
663	w->rpid = pid;
664	w->rstatus = status;
665	ev_feed_event (EV_A_ (W)w, EV_CHILD);
666	}
667	}
668
669	static void
670	childcb (EV_P_ struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
671	{	825	{
672	int pid, status;	826	int pid, status;
673		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
674	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
675	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
676	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678		838
679	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
680	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
681	}
682	}	842	}
683		843
684	#endif	844	#endif
685		845
686	/*****************************************************************************/	846	/*****************************************************************************/
687		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
688	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
689	# include "ev_kqueue.c"	852	# include "ev_kqueue.c"
690	#endif	853	#endif
691	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
692	# include "ev_epoll.c"	855	# include "ev_epoll.c"
…		…
709	{	872	{
710	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
711	}	874	}
712		875
713	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
714	static int	877	int inline_size
715	enable_secure (void)	878	enable_secure (void)
716	{	879	{
717	#ifdef WIN32	880	#ifdef _WIN32
718	return 0;	881	return 0;
719	#else	882	#else
720	return getuid () != geteuid ()	883	return getuid () != geteuid ()
721	|| getgid () != getegid ();	884	|| getgid () != getegid ();
722	#endif	885	#endif
723	}	886	}
724		887
725	int	888	unsigned int
726	ev_method (EV_P)	889	ev_supported_backends (void)
727	{	890	{
728	return method;	891	unsigned int flags = 0;
729	}
730		892
731	static void	893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
732	loop_init (EV_P_ int methods)	894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
733	{	904	{
734	if (!method)	905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
		941	loop_init (EV_P_ unsigned int flags)
		942	{
		943	if (!backend)
735	{	944	{
736	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
737	{	946	{
738	struct timespec ts;	947	struct timespec ts;
739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
744	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
745	mn_now = get_clock ();	954	mn_now = get_clock ();
746	now_floor = mn_now;	955	now_floor = mn_now;
747	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
748		957
749	if (methods == EVMETHOD_AUTO)	958	/* pid check not overridable via env */
750	if (!enable_secure () && getenv ("LIBEV_METHODS"))	959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
		964	if (!(flags & EVFLAG_NOENV)
		965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
751	methods = atoi (getenv ("LIBEV_METHODS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
752	else
753	methods = EVMETHOD_ANY;
754		968
755	method = 0;	969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
756	#if EV_USE_WIN32	974	#if EV_USE_INOTIFY
757	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	975	fs_fd = -2;
		976	#endif
		977
		978	#if EV_USE_PORT
		979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
758	#endif	980	#endif
759	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761	#endif	983	#endif
762	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764	#endif	986	#endif
765	#if EV_USE_POLL	987	#if EV_USE_POLL
766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767	#endif	989	#endif
768	#if EV_USE_SELECT	990	#if EV_USE_SELECT
769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770	#endif	992	#endif
771		993
772	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
773	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
774	}	996	}
775	}	997	}
776		998
777	void	999	static void noinline
778	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
779	{	1001	{
780	int i;	1002	int i;
781		1003
782	#if EV_USE_WIN32	1004	#if EV_USE_INOTIFY
783	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
		1012	#if EV_USE_PORT
		1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
784	#endif	1014	#endif
785	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787	#endif	1017	#endif
788	#if EV_USE_EPOLL	1018	#if EV_USE_EPOLL
789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790	#endif	1020	#endif
791	#if EV_USE_POLL	1021	#if EV_USE_POLL
792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793	#endif	1023	#endif
794	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796	#endif	1026	#endif
797		1027
798	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
799	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
800		1035
801	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
802	array_free_microshit (fdchange);	1037	array_free (fdchange, EMPTY);
803	array_free_microshit (timer);	1038	array_free (timer, EMPTY);
804	array_free_microshit (periodic);	1039	#if EV_PERIODIC_ENABLE
805	array_free_microshit (idle);	1040	array_free (periodic, EMPTY);
806	array_free_microshit (prepare);	1041	#endif
807	array_free_microshit (check);	1042	array_free (prepare, EMPTY);
		1043	array_free (check, EMPTY);
808		1044
809	method = 0;	1045	backend = 0;
810	}	1046	}
811		1047
812	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
813	loop_fork (EV_P)	1051	loop_fork (EV_P)
814	{	1052	{
		1053	#if EV_USE_PORT
		1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1055	#endif
		1056	#if EV_USE_KQUEUE
		1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1058	#endif
815	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
817	#endif	1061	#endif
818	#if EV_USE_KQUEUE	1062	#if EV_USE_INOTIFY
819	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1063	infy_fork (EV_A);
820	#endif	1064	#endif
821		1065
822	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
823	{	1067	{
824	/* default loop */	1068	/* default loop */
…		…
837	postfork = 0;	1081	postfork = 0;
838	}	1082	}
839		1083
840	#if EV_MULTIPLICITY	1084	#if EV_MULTIPLICITY
841	struct ev_loop *	1085	struct ev_loop *
842	ev_loop_new (int methods)	1086	ev_loop_new (unsigned int flags)
843	{	1087	{
844	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
845		1089
846	memset (loop, 0, sizeof (struct ev_loop));	1090	memset (loop, 0, sizeof (struct ev_loop));
847		1091
848	loop_init (EV_A_ methods);	1092	loop_init (EV_A_ flags);
849		1093
850	if (ev_method (EV_A))	1094	if (ev_backend (EV_A))
851	return loop;	1095	return loop;
852		1096
853	return 0;	1097	return 0;
854	}	1098	}
855		1099
…		…
868		1112
869	#endif	1113	#endif
870		1114
871	#if EV_MULTIPLICITY	1115	#if EV_MULTIPLICITY
872	struct ev_loop *	1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
873	#else	1118	#else
874	int	1119	int
		1120	ev_default_loop (unsigned int flags)
875	#endif	1121	#endif
876	ev_default_loop (int methods)
877	{	1122	{
878	if (sigpipe [0] == sigpipe [1])	1123	if (sigpipe [0] == sigpipe [1])
879	if (pipe (sigpipe))	1124	if (pipe (sigpipe))
880	return 0;	1125	return 0;
881		1126
882	if (!default_loop)	1127	if (!ev_default_loop_ptr)
883	{	1128	{
884	#if EV_MULTIPLICITY	1129	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop = &default_loop_struct;	1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886	#else	1131	#else
887	default_loop = 1;	1132	ev_default_loop_ptr = 1;
888	#endif	1133	#endif
889		1134
890	loop_init (EV_A_ methods);	1135	loop_init (EV_A_ flags);
891		1136
892	if (ev_method (EV_A))	1137	if (ev_backend (EV_A))
893	{	1138	{
894	siginit (EV_A);	1139	siginit (EV_A);
895		1140
896	#ifndef WIN32	1141	#ifndef _WIN32
897	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
898	ev_set_priority (&childev, EV_MAXPRI);	1143	ev_set_priority (&childev, EV_MAXPRI);
899	ev_signal_start (EV_A_ &childev);	1144	ev_signal_start (EV_A_ &childev);
900	ev_unref (EV_A); /* child watcher should not keep loop alive */	1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
901	#endif	1146	#endif
902	}	1147	}
903	else	1148	else
904	default_loop = 0;	1149	ev_default_loop_ptr = 0;
905	}	1150	}
906		1151
907	return default_loop;	1152	return ev_default_loop_ptr;
908	}	1153	}
909		1154
910	void	1155	void
911	ev_default_destroy (void)	1156	ev_default_destroy (void)
912	{	1157	{
913	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1160	#endif
916		1161
917	#ifndef WIN32	1162	#ifndef _WIN32
918	ev_ref (EV_A); /* child watcher */	1163	ev_ref (EV_A); /* child watcher */
919	ev_signal_stop (EV_A_ &childev);	1164	ev_signal_stop (EV_A_ &childev);
920	#endif	1165	#endif
921		1166
922	ev_ref (EV_A); /* signal watcher */	1167	ev_ref (EV_A); /* signal watcher */
…		…
930		1175
931	void	1176	void
932	ev_default_fork (void)	1177	ev_default_fork (void)
933	{	1178	{
934	#if EV_MULTIPLICITY	1179	#if EV_MULTIPLICITY
935	struct ev_loop *loop = default_loop;	1180	struct ev_loop *loop = ev_default_loop_ptr;
936	#endif	1181	#endif
937		1182
938	if (method)	1183	if (backend)
939	postfork = 1;	1184	postfork = 1;
940	}	1185	}
941		1186
942	/*****************************************************************************/	1187	/*****************************************************************************/
943		1188
944	static int	1189	void
945	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
946	{	1191	{
947	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
948
949	for (pri = NUMPRI; pri--; )
950	if (pendingcnt [pri])
951	return 1;
952
953	return 0;
954	}	1193	}
955		1194
956	static void	1195	void inline_speed
957	call_pending (EV_P)	1196	call_pending (EV_P)
958	{	1197	{
959	int pri;	1198	int pri;
960		1199
961	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
962	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
963	{	1202	{
964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965		1204
966	if (p->w)	1205	if (expect_true (p->w))
967	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
968	p->w->pending = 0;	1209	p->w->pending = 0;
969	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
970	}	1211	}
971	}	1212	}
972	}	1213	}
973		1214
974	static void	1215	void inline_size
975	timers_reify (EV_P)	1216	timers_reify (EV_P)
976	{	1217	{
977	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
978	{	1219	{
979	struct ev_timer *w = timers [0];	1220	ev_timer *w = (ev_timer *)timers [0];
980		1221
981	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
982		1223
983	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
984	if (w->repeat)	1225	if (w->repeat)
985	{	1226	{
986	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1228
987	((WT)w)->at = mn_now + w->repeat;	1229	((WT)w)->at += w->repeat;
		1230	if (((WT)w)->at < mn_now)
		1231	((WT)w)->at = mn_now;
		1232
988	downheap ((WT *)timers, timercnt, 0);	1233	downheap (timers, timercnt, 0);
989	}	1234	}
990	else	1235	else
991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992		1237
993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994	}	1239	}
995	}	1240	}
996		1241
997	static void	1242	#if EV_PERIODIC_ENABLE
		1243	void inline_size
998	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
999	{	1245	{
1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001	{	1247	{
1002	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = (ev_periodic *)periodics [0];
1003		1249
1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1005		1251
1006	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1007	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1008	{	1254	{
1009	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1010
1011	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1012	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap (periodics, periodiccnt, 0);
1013	}	1258	}
1014	else if (w->interval)	1259	else if (w->interval)
1015	{	1260	{
1016	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1017	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1018	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1019	}	1265	}
1020	else	1266	else
1021	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1022		1268
1023	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1024	}	1270	}
1025	}	1271	}
1026		1272
1027	static void	1273	static void noinline
1028	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1029	{	1275	{
1030	int i;	1276	int i;
1031		1277
1032	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1033	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1034	{	1280	{
1035	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = (ev_periodic *)periodics [i];
1036		1282
1037	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1039	else if (w->interval)	1285	else if (w->interval)
1040	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1041	}	1287	}
1042		1288
1043	/* now rebuild the heap */	1289	/* now rebuild the heap */
1044	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1045	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap (periodics, periodiccnt, i);
1046	}	1292	}
		1293	#endif
1047		1294
1048	inline int	1295	#if EV_IDLE_ENABLE
1049	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1050	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1051	mn_now = get_clock ();	1328	mn_now = get_clock ();
1052		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1053	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1054	{	1333	{
1055	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1056	return 0;	1335	return;
1057	}	1336	}
1058	else	1337
1059	{
1060	now_floor = mn_now;	1338	now_floor = mn_now;
1061	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1062	return 1;
1063	}
1064	}
1065		1340
1066	static void	1341	/* loop a few times, before making important decisions.
1067	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1068	{	1343	* in case we get preempted during the calls to
1069	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1070		1345	* to succeed in that case, though. and looping a few more times
1071	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1072	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1073	{	1348	*/
1074	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1075	{	1350	{
1076	ev_tstamp odiff = rtmn_diff;
1077
1078	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1079	{
1080	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1081		1352
1082	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1083	return; /* all is well */	1354	return; /* all is well */
1084		1355
1085	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();	1357	mn_now = get_clock ();
1087	now_floor = mn_now;	1358	now_floor = mn_now;
1088	}	1359	}
1089		1360
		1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1090	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1091	/* no timer adjustment, as the monotonic clock doesn't jump */
1092	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093	}
1094	}
1095	else
1096	#endif	1376	#endif
1097	{
1098	ev_rt_now = ev_time ();
1099
1100	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1101	{
1102	periodics_reschedule (EV_A);
1103
1104	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1105	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1106	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1107	}	1380	}
1108		1381
1109	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1125	static int loop_done;	1398	static int loop_done;
1126		1399
1127	void	1400	void
1128	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1129	{	1402	{
1130	double block;
1131	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
		1406
		1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1132		1408
1133	do	1409	do
1134	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1135	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1136	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1137	{	1432	{
1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1139	call_pending (EV_A);	1434	call_pending (EV_A);
1140	}	1435	}
1141		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1142	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1143	if (expect_false (postfork))	1441	if (expect_false (postfork))
1144	loop_fork (EV_A);	1442	loop_fork (EV_A);
1145		1443
1146	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1147	fd_reify (EV_A);	1445	fd_reify (EV_A);
1148		1446
1149	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1150		1450
1151	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1152	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1153	#if EV_USE_MONOTONIC
1154	if (expect_true (have_monotonic))
1155	time_update_monotonic (EV_A);
1156	else	1453	else
1157	#endif
1158	{	1454	{
1159	ev_rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1160	mn_now = ev_rt_now;	1456	time_update (EV_A_ 1e100);
1161	}
1162		1457
1163	if (flags & EVLOOP_NONBLOCK || idlecnt)
1164	block = 0.;
1165	else
1166	{
1167	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1168		1459
1169	if (timercnt)	1460	if (timercnt)
1170	{	1461	{
1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172	if (block > to) block = to;	1463	if (block > to) block = to;
1173	}	1464	}
1174		1465
		1466	#if EV_PERIODIC_ENABLE
1175	if (periodiccnt)	1467	if (periodiccnt)
1176	{	1468	{
1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178	if (block > to) block = to;	1470	if (block > to) block = to;
1179	}	1471	}
		1472	#endif
1180		1473
1181	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1182	}	1475	}
1183		1476
		1477	++loop_count;
1184	method_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1185		1479
1186	/* update ev_rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1187	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1188		1483
1189	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1190	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
		1486	#if EV_PERIODIC_ENABLE
1191	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
		1488	#endif
1192		1489
		1490	#if EV_IDLE_ENABLE
1193	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1194	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1196		1494
1197	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1198	if (checkcnt)	1496	if (expect_false (checkcnt))
1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200		1498
1201	call_pending (EV_A);	1499	call_pending (EV_A);
		1500
1202	}	1501	}
1203	while (activecnt && !loop_done);	1502	while (expect_true (activecnt && !loop_done));
1204		1503
1205	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1206	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1207	}	1506	}
1208		1507
1209	void	1508	void
1210	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1211	{	1510	{
1212	loop_done = how;	1511	loop_done = how;
1213	}	1512	}
1214		1513
1215	/*****************************************************************************/	1514	/*****************************************************************************/
1216		1515
1217	inline void	1516	void inline_size
1218	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1219	{	1518	{
1220	elem->next = *head;	1519	elem->next = *head;
1221	*head = elem;	1520	*head = elem;
1222	}	1521	}
1223		1522
1224	inline void	1523	void inline_size
1225	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1226	{	1525	{
1227	while (*head)	1526	while (*head)
1228	{	1527	{
1229	if (*head == elem)	1528	if (*head == elem)
…		…
1234		1533
1235	head = &(*head)->next;	1534	head = &(*head)->next;
1236	}	1535	}
1237	}	1536	}
1238		1537
1239	inline void	1538	void inline_speed
1240	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1241	{	1540	{
1242	if (w->pending)	1541	if (w->pending)
1243	{	1542	{
1244	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1245	w->pending = 0;	1544	w->pending = 0;
1246	}	1545	}
1247	}	1546	}
1248		1547
1249	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1250	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1251	{	1576	{
1252	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1253	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1254
1255	w->active = active;	1578	w->active = active;
1256	ev_ref (EV_A);	1579	ev_ref (EV_A);
1257	}	1580	}
1258		1581
1259	inline void	1582	void inline_size
1260	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1261	{	1584	{
1262	ev_unref (EV_A);	1585	ev_unref (EV_A);
1263	w->active = 0;	1586	w->active = 0;
1264	}	1587	}
1265		1588
1266	/*****************************************************************************/	1589	/*****************************************************************************/
1267		1590
1268	void	1591	void noinline
1269	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1270	{	1593	{
1271	int fd = w->fd;	1594	int fd = w->fd;
1272		1595
1273	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
1274	return;	1597	return;
1275		1598
1276	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1277		1600
1278	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
1279	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1280	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add (&anfds[fd].head, (WL)w);
1281		1604
1282	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);
		1606	w->events &= ~ EV_IOFDSET;
1283	}	1607	}
1284		1608
1285	void	1609	void noinline
1286	ev_io_stop (EV_P_ struct ev_io *w)	1610	ev_io_stop (EV_P_ ev_io *w)
1287	{	1611	{
1288	ev_clear_pending (EV_A_ (W)w);	1612	clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1613	if (expect_false (!ev_is_active (w)))
1290	return;	1614	return;
1291		1615
		1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1617
1292	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1618	wlist_del (&anfds[w->fd].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1619	ev_stop (EV_A_ (W)w);
1294		1620
1295	fd_change (EV_A_ w->fd);	1621	fd_change (EV_A_ w->fd, 0);
1296	}	1622	}
1297		1623
1298	void	1624	void noinline
1299	ev_timer_start (EV_P_ struct ev_timer *w)	1625	ev_timer_start (EV_P_ ev_timer *w)
		1626	{
		1627	if (expect_false (ev_is_active (w)))
		1628	return;
		1629
		1630	((WT)w)->at += mn_now;
		1631
		1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1633
		1634	ev_start (EV_A_ (W)w, ++timercnt);
		1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1636	timers [timercnt - 1] = (WT)w;
		1637	upheap (timers, timercnt - 1);
		1638
		1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1640	}
		1641
		1642	void noinline
		1643	ev_timer_stop (EV_P_ ev_timer *w)
		1644	{
		1645	clear_pending (EV_A_ (W)w);
		1646	if (expect_false (!ev_is_active (w)))
		1647	return;
		1648
		1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1650
		1651	{
		1652	int active = ((W)w)->active;
		1653
		1654	if (expect_true (--active < --timercnt))
		1655	{
		1656	timers [active] = timers [timercnt];
		1657	adjustheap (timers, timercnt, active);
		1658	}
		1659	}
		1660
		1661	((WT)w)->at -= mn_now;
		1662
		1663	ev_stop (EV_A_ (W)w);
		1664	}
		1665
		1666	void noinline
		1667	ev_timer_again (EV_P_ ev_timer *w)
1300	{	1668	{
1301	if (ev_is_active (w))	1669	if (ev_is_active (w))
1302	return;
1303
1304	((WT)w)->at += mn_now;
1305
1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307
1308	ev_start (EV_A_ (W)w, ++timercnt);
1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1310	timers [timercnt - 1] = w;
1311	upheap ((WT *)timers, timercnt - 1);
1312
1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314	}
1315
1316	void
1317	ev_timer_stop (EV_P_ struct ev_timer *w)
1318	{
1319	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))
1321	return;
1322
1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1324
1325	if (((W)w)->active < timercnt--)
1326	{
1327	timers [((W)w)->active - 1] = timers [timercnt];
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}
1330
1331	((WT)w)->at = w->repeat;
1332
1333	ev_stop (EV_A_ (W)w);
1334	}
1335
1336	void
1337	ev_timer_again (EV_P_ struct ev_timer *w)
1338	{
1339	if (ev_is_active (w))
1340	{	1670	{
1341	if (w->repeat)	1671	if (w->repeat)
		1672	{
		1673	((WT)w)->at = mn_now + w->repeat;
1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1674	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1675	}
1343	else	1676	else
1344	ev_timer_stop (EV_A_ w);	1677	ev_timer_stop (EV_A_ w);
1345	}	1678	}
1346	else if (w->repeat)	1679	else if (w->repeat)
		1680	{
		1681	w->at = w->repeat;
1347	ev_timer_start (EV_A_ w);	1682	ev_timer_start (EV_A_ w);
		1683	}
1348	}	1684	}
1349		1685
1350	void	1686	#if EV_PERIODIC_ENABLE
		1687	void noinline
1351	ev_periodic_start (EV_P_ struct ev_periodic *w)	1688	ev_periodic_start (EV_P_ ev_periodic *w)
1352	{	1689	{
1353	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1354	return;	1691	return;
1355		1692
1356	if (w->reschedule_cb)	1693	if (w->reschedule_cb)
1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358	else if (w->interval)	1695	else if (w->interval)
1359	{	1696	{
1360	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1361	/* this formula differs from the one in periodic_reify because we do not always round up */	1698	/* this formula differs from the one in periodic_reify because we do not always round up */
1362	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1363	}	1700	}
		1701	else
		1702	((WT)w)->at = w->offset;
1364		1703
1365	ev_start (EV_A_ (W)w, ++periodiccnt);	1704	ev_start (EV_A_ (W)w, ++periodiccnt);
1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1367	periodics [periodiccnt - 1] = w;	1706	periodics [periodiccnt - 1] = (WT)w;
1368	upheap ((WT *)periodics, periodiccnt - 1);	1707	upheap (periodics, periodiccnt - 1);
1369		1708
1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1371	}	1710	}
1372		1711
1373	void	1712	void noinline
1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1713	ev_periodic_stop (EV_P_ ev_periodic *w)
1375	{	1714	{
1376	ev_clear_pending (EV_A_ (W)w);	1715	clear_pending (EV_A_ (W)w);
1377	if (!ev_is_active (w))	1716	if (expect_false (!ev_is_active (w)))
1378	return;	1717	return;
1379		1718
1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1381		1720
1382	if (((W)w)->active < periodiccnt--)	1721	{
		1722	int active = ((W)w)->active;
		1723
		1724	if (expect_true (--active < --periodiccnt))
1383	{	1725	{
1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1726	periodics [active] = periodics [periodiccnt];
1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1727	adjustheap (periodics, periodiccnt, active);
1386	}	1728	}
		1729	}
1387		1730
1388	ev_stop (EV_A_ (W)w);	1731	ev_stop (EV_A_ (W)w);
1389	}	1732	}
1390		1733
1391	void	1734	void noinline
1392	ev_periodic_again (EV_P_ struct ev_periodic *w)	1735	ev_periodic_again (EV_P_ ev_periodic *w)
1393	{	1736	{
1394	/* TODO: use adjustheap and recalculation */	1737	/* TODO: use adjustheap and recalculation */
1395	ev_periodic_stop (EV_A_ w);	1738	ev_periodic_stop (EV_A_ w);
1396	ev_periodic_start (EV_A_ w);	1739	ev_periodic_start (EV_A_ w);
1397	}	1740	}
1398		1741	#endif
1399	void
1400	ev_idle_start (EV_P_ struct ev_idle *w)
1401	{
1402	if (ev_is_active (w))
1403	return;
1404
1405	ev_start (EV_A_ (W)w, ++idlecnt);
1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1407	idles [idlecnt - 1] = w;
1408	}
1409
1410	void
1411	ev_idle_stop (EV_P_ struct ev_idle *w)
1412	{
1413	ev_clear_pending (EV_A_ (W)w);
1414	if (ev_is_active (w))
1415	return;
1416
1417	idles [((W)w)->active - 1] = idles [--idlecnt];
1418	ev_stop (EV_A_ (W)w);
1419	}
1420
1421	void
1422	ev_prepare_start (EV_P_ struct ev_prepare *w)
1423	{
1424	if (ev_is_active (w))
1425	return;
1426
1427	ev_start (EV_A_ (W)w, ++preparecnt);
1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1429	prepares [preparecnt - 1] = w;
1430	}
1431
1432	void
1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434	{
1435	ev_clear_pending (EV_A_ (W)w);
1436	if (ev_is_active (w))
1437	return;
1438
1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440	ev_stop (EV_A_ (W)w);
1441	}
1442
1443	void
1444	ev_check_start (EV_P_ struct ev_check *w)
1445	{
1446	if (ev_is_active (w))
1447	return;
1448
1449	ev_start (EV_A_ (W)w, ++checkcnt);
1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1451	checks [checkcnt - 1] = w;
1452	}
1453
1454	void
1455	ev_check_stop (EV_P_ struct ev_check *w)
1456	{
1457	ev_clear_pending (EV_A_ (W)w);
1458	if (ev_is_active (w))
1459	return;
1460
1461	checks [((W)w)->active - 1] = checks [--checkcnt];
1462	ev_stop (EV_A_ (W)w);
1463	}
1464		1742
1465	#ifndef SA_RESTART	1743	#ifndef SA_RESTART
1466	# define SA_RESTART 0	1744	# define SA_RESTART 0
1467	#endif	1745	#endif
1468		1746
1469	void	1747	void noinline
1470	ev_signal_start (EV_P_ struct ev_signal *w)	1748	ev_signal_start (EV_P_ ev_signal *w)
1471	{	1749	{
1472	#if EV_MULTIPLICITY	1750	#if EV_MULTIPLICITY
1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1751	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474	#endif	1752	#endif
1475	if (ev_is_active (w))	1753	if (expect_false (ev_is_active (w)))
1476	return;	1754	return;
1477		1755
1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479		1757
		1758	{
		1759	#ifndef _WIN32
		1760	sigset_t full, prev;
		1761	sigfillset (&full);
		1762	sigprocmask (SIG_SETMASK, &full, &prev);
		1763	#endif
		1764
		1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1766
		1767	#ifndef _WIN32
		1768	sigprocmask (SIG_SETMASK, &prev, 0);
		1769	#endif
		1770	}
		1771
1480	ev_start (EV_A_ (W)w, 1);	1772	ev_start (EV_A_ (W)w, 1);
1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_add (&signals [w->signum - 1].head, (WL)w);
1483		1774
1484	if (!((WL)w)->next)	1775	if (!((WL)w)->next)
1485	{	1776	{
1486	#if WIN32	1777	#if _WIN32
1487	signal (w->signum, sighandler);	1778	signal (w->signum, sighandler);
1488	#else	1779	#else
1489	struct sigaction sa;	1780	struct sigaction sa;
1490	sa.sa_handler = sighandler;	1781	sa.sa_handler = sighandler;
1491	sigfillset (&sa.sa_mask);	1782	sigfillset (&sa.sa_mask);
…		…
1493	sigaction (w->signum, &sa, 0);	1784	sigaction (w->signum, &sa, 0);
1494	#endif	1785	#endif
1495	}	1786	}
1496	}	1787	}
1497		1788
1498	void	1789	void noinline
1499	ev_signal_stop (EV_P_ struct ev_signal *w)	1790	ev_signal_stop (EV_P_ ev_signal *w)
1500	{	1791	{
1501	ev_clear_pending (EV_A_ (W)w);	1792	clear_pending (EV_A_ (W)w);
1502	if (!ev_is_active (w))	1793	if (expect_false (!ev_is_active (w)))
1503	return;	1794	return;
1504		1795
1505	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1796	wlist_del (&signals [w->signum - 1].head, (WL)w);
1506	ev_stop (EV_A_ (W)w);	1797	ev_stop (EV_A_ (W)w);
1507		1798
1508	if (!signals [w->signum - 1].head)	1799	if (!signals [w->signum - 1].head)
1509	signal (w->signum, SIG_DFL);	1800	signal (w->signum, SIG_DFL);
1510	}	1801	}
1511		1802
1512	void	1803	void
1513	ev_child_start (EV_P_ struct ev_child *w)	1804	ev_child_start (EV_P_ ev_child *w)
1514	{	1805	{
1515	#if EV_MULTIPLICITY	1806	#if EV_MULTIPLICITY
1516	assert (("child watchers are only supported in the default loop", loop == default_loop));	1807	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1808	#endif
1518	if (ev_is_active (w))	1809	if (expect_false (ev_is_active (w)))
1519	return;	1810	return;
1520		1811
1521	ev_start (EV_A_ (W)w, 1);	1812	ev_start (EV_A_ (W)w, 1);
1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1523	}	1814	}
1524		1815
1525	void	1816	void
1526	ev_child_stop (EV_P_ struct ev_child *w)	1817	ev_child_stop (EV_P_ ev_child *w)
1527	{	1818	{
1528	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1529	if (ev_is_active (w))	1820	if (expect_false (!ev_is_active (w)))
1530	return;	1821	return;
1531		1822
1532	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1533	ev_stop (EV_A_ (W)w);	1824	ev_stop (EV_A_ (W)w);
1534	}	1825	}
1535		1826
		1827	#if EV_STAT_ENABLE
		1828
		1829	# ifdef _WIN32
		1830	# undef lstat
		1831	# define lstat(a,b) _stati64 (a,b)
		1832	# endif
		1833
		1834	#define DEF_STAT_INTERVAL 5.0074891
		1835	#define MIN_STAT_INTERVAL 0.1074891
		1836
		1837	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1838
		1839	#if EV_USE_INOTIFY
		1840	# define EV_INOTIFY_BUFSIZE 8192
		1841
		1842	static void noinline
		1843	infy_add (EV_P_ ev_stat *w)
		1844	{
		1845	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);
		1846
		1847	if (w->wd < 0)
		1848	{
		1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1850
		1851	/* monitor some parent directory for speedup hints */
		1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1853	{
		1854	char path [4096];
		1855	strcpy (path, w->path);
		1856
		1857	do
		1858	{
		1859	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1860	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1861
		1862	char *pend = strrchr (path, '/');
		1863
		1864	if (!pend)
		1865	break; /* whoops, no '/', complain to your admin */
		1866
		1867	*pend = 0;
		1868	w->wd = inotify_add_watch (fs_fd, path, mask);
		1869	}
		1870	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1871	}
		1872	}
		1873	else
		1874	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1875
		1876	if (w->wd >= 0)
		1877	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1878	}
		1879
		1880	static void noinline
		1881	infy_del (EV_P_ ev_stat *w)
		1882	{
		1883	int slot;
		1884	int wd = w->wd;
		1885
		1886	if (wd < 0)
		1887	return;
		1888
		1889	w->wd = -2;
		1890	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1891	wlist_del (&fs_hash [slot].head, (WL)w);
		1892
		1893	/* remove this watcher, if others are watching it, they will rearm */
		1894	inotify_rm_watch (fs_fd, wd);
		1895	}
		1896
		1897	static void noinline
		1898	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1899	{
		1900	if (slot < 0)
		1901	/* overflow, need to check for all hahs slots */
		1902	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1903	infy_wd (EV_A_ slot, wd, ev);
		1904	else
		1905	{
		1906	WL w_;
		1907
		1908	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1909	{
		1910	ev_stat *w = (ev_stat *)w_;
		1911	w_ = w_->next; /* lets us remove this watcher and all before it */
		1912
		1913	if (w->wd == wd || wd == -1)
		1914	{
		1915	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1916	{
		1917	w->wd = -1;
		1918	infy_add (EV_A_ w); /* re-add, no matter what */
		1919	}
		1920
		1921	stat_timer_cb (EV_A_ &w->timer, 0);
		1922	}
		1923	}
		1924	}
		1925	}
		1926
		1927	static void
		1928	infy_cb (EV_P_ ev_io *w, int revents)
		1929	{
		1930	char buf [EV_INOTIFY_BUFSIZE];
		1931	struct inotify_event *ev = (struct inotify_event *)buf;
		1932	int ofs;
		1933	int len = read (fs_fd, buf, sizeof (buf));
		1934
		1935	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1936	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1937	}
		1938
		1939	void inline_size
		1940	infy_init (EV_P)
		1941	{
		1942	if (fs_fd != -2)
		1943	return;
		1944
		1945	fs_fd = inotify_init ();
		1946
		1947	if (fs_fd >= 0)
		1948	{
		1949	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1950	ev_set_priority (&fs_w, EV_MAXPRI);
		1951	ev_io_start (EV_A_ &fs_w);
		1952	}
		1953	}
		1954
		1955	void inline_size
		1956	infy_fork (EV_P)
		1957	{
		1958	int slot;
		1959
		1960	if (fs_fd < 0)
		1961	return;
		1962
		1963	close (fs_fd);
		1964	fs_fd = inotify_init ();
		1965
		1966	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1967	{
		1968	WL w_ = fs_hash [slot].head;
		1969	fs_hash [slot].head = 0;
		1970
		1971	while (w_)
		1972	{
		1973	ev_stat *w = (ev_stat *)w_;
		1974	w_ = w_->next; /* lets us add this watcher */
		1975
		1976	w->wd = -1;
		1977
		1978	if (fs_fd >= 0)
		1979	infy_add (EV_A_ w); /* re-add, no matter what */
		1980	else
		1981	ev_timer_start (EV_A_ &w->timer);
		1982	}
		1983
		1984	}
		1985	}
		1986
		1987	#endif
		1988
		1989	void
		1990	ev_stat_stat (EV_P_ ev_stat *w)
		1991	{
		1992	if (lstat (w->path, &w->attr) < 0)
		1993	w->attr.st_nlink = 0;
		1994	else if (!w->attr.st_nlink)
		1995	w->attr.st_nlink = 1;
		1996	}
		1997
		1998	static void noinline
		1999	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2000	{
		2001	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2002
		2003	/* we copy this here each the time so that */
		2004	/* prev has the old value when the callback gets invoked */
		2005	w->prev = w->attr;
		2006	ev_stat_stat (EV_A_ w);
		2007
		2008	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2009	if (
		2010	w->prev.st_dev != w->attr.st_dev
		2011	|| w->prev.st_ino != w->attr.st_ino
		2012	|| w->prev.st_mode != w->attr.st_mode
		2013	|| w->prev.st_nlink != w->attr.st_nlink
		2014	|| w->prev.st_uid != w->attr.st_uid
		2015	|| w->prev.st_gid != w->attr.st_gid
		2016	|| w->prev.st_rdev != w->attr.st_rdev
		2017	|| w->prev.st_size != w->attr.st_size
		2018	|| w->prev.st_atime != w->attr.st_atime
		2019	|| w->prev.st_mtime != w->attr.st_mtime
		2020	|| w->prev.st_ctime != w->attr.st_ctime
		2021	) {
		2022	#if EV_USE_INOTIFY
		2023	infy_del (EV_A_ w);
		2024	infy_add (EV_A_ w);
		2025	ev_stat_stat (EV_A_ w); /* avoid race... */
		2026	#endif
		2027
		2028	ev_feed_event (EV_A_ w, EV_STAT);
		2029	}
		2030	}
		2031
		2032	void
		2033	ev_stat_start (EV_P_ ev_stat *w)
		2034	{
		2035	if (expect_false (ev_is_active (w)))
		2036	return;
		2037
		2038	/* since we use memcmp, we need to clear any padding data etc. */
		2039	memset (&w->prev, 0, sizeof (ev_statdata));
		2040	memset (&w->attr, 0, sizeof (ev_statdata));
		2041
		2042	ev_stat_stat (EV_A_ w);
		2043
		2044	if (w->interval < MIN_STAT_INTERVAL)
		2045	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2046
		2047	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2048	ev_set_priority (&w->timer, ev_priority (w));
		2049
		2050	#if EV_USE_INOTIFY
		2051	infy_init (EV_A);
		2052
		2053	if (fs_fd >= 0)
		2054	infy_add (EV_A_ w);
		2055	else
		2056	#endif
		2057	ev_timer_start (EV_A_ &w->timer);
		2058
		2059	ev_start (EV_A_ (W)w, 1);
		2060	}
		2061
		2062	void
		2063	ev_stat_stop (EV_P_ ev_stat *w)
		2064	{
		2065	clear_pending (EV_A_ (W)w);
		2066	if (expect_false (!ev_is_active (w)))
		2067	return;
		2068
		2069	#if EV_USE_INOTIFY
		2070	infy_del (EV_A_ w);
		2071	#endif
		2072	ev_timer_stop (EV_A_ &w->timer);
		2073
		2074	ev_stop (EV_A_ (W)w);
		2075	}
		2076	#endif
		2077
		2078	#if EV_IDLE_ENABLE
		2079	void
		2080	ev_idle_start (EV_P_ ev_idle *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	pri_adjust (EV_A_ (W)w);
		2086
		2087	{
		2088	int active = ++idlecnt [ABSPRI (w)];
		2089
		2090	++idleall;
		2091	ev_start (EV_A_ (W)w, active);
		2092
		2093	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2094	idles [ABSPRI (w)][active - 1] = w;
		2095	}
		2096	}
		2097
		2098	void
		2099	ev_idle_stop (EV_P_ ev_idle *w)
		2100	{
		2101	clear_pending (EV_A_ (W)w);
		2102	if (expect_false (!ev_is_active (w)))
		2103	return;
		2104
		2105	{
		2106	int active = ((W)w)->active;
		2107
		2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2109	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2110
		2111	ev_stop (EV_A_ (W)w);
		2112	--idleall;
		2113	}
		2114	}
		2115	#endif
		2116
		2117	void
		2118	ev_prepare_start (EV_P_ ev_prepare *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	ev_start (EV_A_ (W)w, ++preparecnt);
		2124	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2125	prepares [preparecnt - 1] = w;
		2126	}
		2127
		2128	void
		2129	ev_prepare_stop (EV_P_ ev_prepare *w)
		2130	{
		2131	clear_pending (EV_A_ (W)w);
		2132	if (expect_false (!ev_is_active (w)))
		2133	return;
		2134
		2135	{
		2136	int active = ((W)w)->active;
		2137	prepares [active - 1] = prepares [--preparecnt];
		2138	((W)prepares [active - 1])->active = active;
		2139	}
		2140
		2141	ev_stop (EV_A_ (W)w);
		2142	}
		2143
		2144	void
		2145	ev_check_start (EV_P_ ev_check *w)
		2146	{
		2147	if (expect_false (ev_is_active (w)))
		2148	return;
		2149
		2150	ev_start (EV_A_ (W)w, ++checkcnt);
		2151	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2152	checks [checkcnt - 1] = w;
		2153	}
		2154
		2155	void
		2156	ev_check_stop (EV_P_ ev_check *w)
		2157	{
		2158	clear_pending (EV_A_ (W)w);
		2159	if (expect_false (!ev_is_active (w)))
		2160	return;
		2161
		2162	{
		2163	int active = ((W)w)->active;
		2164	checks [active - 1] = checks [--checkcnt];
		2165	((W)checks [active - 1])->active = active;
		2166	}
		2167
		2168	ev_stop (EV_A_ (W)w);
		2169	}
		2170
		2171	#if EV_EMBED_ENABLE
		2172	void noinline
		2173	ev_embed_sweep (EV_P_ ev_embed *w)
		2174	{
		2175	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2176	}
		2177
		2178	static void
		2179	embed_cb (EV_P_ ev_io *io, int revents)
		2180	{
		2181	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2182
		2183	if (ev_cb (w))
		2184	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2185	else
		2186	ev_embed_sweep (loop, w);
		2187	}
		2188
		2189	void
		2190	ev_embed_start (EV_P_ ev_embed *w)
		2191	{
		2192	if (expect_false (ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	struct ev_loop *loop = w->loop;
		2197	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2198	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2199	}
		2200
		2201	ev_set_priority (&w->io, ev_priority (w));
		2202	ev_io_start (EV_A_ &w->io);
		2203
		2204	ev_start (EV_A_ (W)w, 1);
		2205	}
		2206
		2207	void
		2208	ev_embed_stop (EV_P_ ev_embed *w)
		2209	{
		2210	clear_pending (EV_A_ (W)w);
		2211	if (expect_false (!ev_is_active (w)))
		2212	return;
		2213
		2214	ev_io_stop (EV_A_ &w->io);
		2215
		2216	ev_stop (EV_A_ (W)w);
		2217	}
		2218	#endif
		2219
		2220	#if EV_FORK_ENABLE
		2221	void
		2222	ev_fork_start (EV_P_ ev_fork *w)
		2223	{
		2224	if (expect_false (ev_is_active (w)))
		2225	return;
		2226
		2227	ev_start (EV_A_ (W)w, ++forkcnt);
		2228	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2229	forks [forkcnt - 1] = w;
		2230	}
		2231
		2232	void
		2233	ev_fork_stop (EV_P_ ev_fork *w)
		2234	{
		2235	clear_pending (EV_A_ (W)w);
		2236	if (expect_false (!ev_is_active (w)))
		2237	return;
		2238
		2239	{
		2240	int active = ((W)w)->active;
		2241	forks [active - 1] = forks [--forkcnt];
		2242	((W)forks [active - 1])->active = active;
		2243	}
		2244
		2245	ev_stop (EV_A_ (W)w);
		2246	}
		2247	#endif
		2248
1536	/*****************************************************************************/	2249	/*****************************************************************************/
1537		2250
1538	struct ev_once	2251	struct ev_once
1539	{	2252	{
1540	struct ev_io io;	2253	ev_io io;
1541	struct ev_timer to;	2254	ev_timer to;
1542	void (*cb)(int revents, void *arg);	2255	void (*cb)(int revents, void *arg);
1543	void *arg;	2256	void *arg;
1544	};	2257	};
1545		2258
1546	static void	2259	static void
…		…
1555		2268
1556	cb (revents, arg);	2269	cb (revents, arg);
1557	}	2270	}
1558		2271
1559	static void	2272	static void
1560	once_cb_io (EV_P_ struct ev_io *w, int revents)	2273	once_cb_io (EV_P_ ev_io *w, int revents)
1561	{	2274	{
1562	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2275	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1563	}	2276	}
1564		2277
1565	static void	2278	static void
1566	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2279	once_cb_to (EV_P_ ev_timer *w, int revents)
1567	{	2280	{
1568	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1569	}	2282	}
1570		2283
1571	void	2284	void
1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2285	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1573	{	2286	{
1574	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2287	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1575		2288
1576	if (!once)	2289	if (expect_false (!once))
		2290	{
1577	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2291	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1578	else	2292	return;
1579	{	2293	}
		2294
1580	once->cb = cb;	2295	once->cb = cb;
1581	once->arg = arg;	2296	once->arg = arg;
1582		2297
1583	ev_init (&once->io, once_cb_io);	2298	ev_init (&once->io, once_cb_io);
1584	if (fd >= 0)	2299	if (fd >= 0)
1585	{	2300	{
1586	ev_io_set (&once->io, fd, events);	2301	ev_io_set (&once->io, fd, events);
1587	ev_io_start (EV_A_ &once->io);	2302	ev_io_start (EV_A_ &once->io);
1588	}	2303	}
1589		2304
1590	ev_init (&once->to, once_cb_to);	2305	ev_init (&once->to, once_cb_to);
1591	if (timeout >= 0.)	2306	if (timeout >= 0.)
1592	{	2307	{
1593	ev_timer_set (&once->to, timeout, 0.);	2308	ev_timer_set (&once->to, timeout, 0.);
1594	ev_timer_start (EV_A_ &once->to);	2309	ev_timer_start (EV_A_ &once->to);
1595	}
1596	}	2310	}
1597	}	2311	}
1598		2312
		2313	#ifdef __cplusplus
		2314	}
		2315	#endif
		2316

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