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Comparing libev/ev.c (file contents):
Revision 1.81 by root, Fri Nov 9 17:07:59 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	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	354	#include "ev_vars.h"
228	#undef VAR	355	#undef VAR
229	};	356	};
230	#include "ev_wrap.h"	357	#include "ev_wrap.h"
231		358
232	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
234		361
235	#else	362	#else
236		363
		364	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	366	#include "ev_vars.h"
239	#undef VAR	367	#undef VAR
240		368
241	static int default_loop;	369	static int ev_default_loop_ptr;
242		370
243	#endif	371	#endif
244		372
245	/*****************************************************************************/	373	/*****************************************************************************/
246		374
247	inline ev_tstamp	375	ev_tstamp
248	ev_time (void)	376	ev_time (void)
249	{	377	{
250	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
251	struct timespec ts;	379	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	386	#endif
259	}	387	}
260		388
261	inline ev_tstamp	389	ev_tstamp inline_size
262	get_clock (void)	390	get_clock (void)
263	{	391	{
264	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
266	{	394	{
…		…
271	#endif	399	#endif
272		400
273	return ev_time ();	401	return ev_time ();
274	}	402	}
275		403
		404	#if EV_MULTIPLICITY
276	ev_tstamp	405	ev_tstamp
277	ev_now (EV_P)	406	ev_now (EV_P)
278	{	407	{
279	return rt_now;	408	return ev_rt_now;
280	}	409	}
		410	#endif
281		411
282	#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	}
283		439
284	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
286	{ \	442	{ \
287	int newcnt = cur; \	443	int ocur_ = (cur); \
288	do \	444	(base) = (type *)array_realloc \
289	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
290	newcnt = array_roundsize (type, newcnt << 1); \	446	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	}	447	}
298		448
		449	#if 0
299	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301	{ \	452	{ \
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	456	}
306		457	#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		458
312	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
313	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;
314		461
315	/*****************************************************************************/	462	/*****************************************************************************/
316		463
317	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
318	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
319	{	494	{
320	while (count--)	495	while (count--)
321	{	496	{
322	base->head = 0;	497	base->head = 0;
…		…
325		500
326	++base;	501	++base;
327	}	502	}
328	}	503	}
329		504
330	void	505	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)	506	fd_event (EV_P_ int fd, int revents)
358	{	507	{
359	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	509	ev_io *w;
361		510
362	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)
363	{	512	{
364	int ev = w->events & revents;	513	int ev = w->events & revents;
365		514
366	if (ev)	515	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
369	}	518	}
370		519
371	void	520	void
372	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
374	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
375	}	525	}
376		526
377	/*****************************************************************************/	527	void inline_size
378
379	static void
380	fd_reify (EV_P)	528	fd_reify (EV_P)
381	{	529	{
382	int i;	530	int i;
383		531
384	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
385	{	533	{
386	int fd = fdchanges [i];	534	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	536	ev_io *w;
389		537
390	int events = 0;	538	int events = 0;
391		539
392	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)
393	events |= w->events;	541	events |= w->events;
394		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
395	anfd->reify = 0;	552	anfd->reify = 0;
396		553
397	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	555	anfd->events = events;
399	}	556	}
400		557
401	fdchangecnt = 0;	558	fdchangecnt = 0;
402	}	559	}
403		560
404	static void	561	void inline_size
405	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd, int flags)
406	{	563	{
407	if (anfds [fd].reify)	564	unsigned char reify = anfds [fd].reify;
408	return;
409
410	anfds [fd].reify = 1;	565	anfds [fd].reify |= flags | 1;
411		566
		567	if (expect_true (!reify))
		568	{
412	++fdchangecnt;	569	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
		572	}
415	}	573	}
416		574
417	static void	575	void inline_speed
418	fd_kill (EV_P_ int fd)	576	fd_kill (EV_P_ int fd)
419	{	577	{
420	struct ev_io *w;	578	ev_io *w;
421		579
422	while ((w = (struct ev_io *)anfds [fd].head))	580	while ((w = (ev_io *)anfds [fd].head))
423	{	581	{
424	ev_io_stop (EV_A_ w);	582	ev_io_stop (EV_A_ w);
425	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);
426	}	584	}
427	}	585	}
428		586
429	static int	587	int inline_size
430	fd_valid (int fd)	588	fd_valid (int fd)
431	{	589	{
432	#ifdef WIN32	590	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	591	return _get_osfhandle (fd) != -1;
434	#else	592	#else
435	return fcntl (fd, F_GETFD) != -1;	593	return fcntl (fd, F_GETFD) != -1;
436	#endif	594	#endif
437	}	595	}
438		596
439	/* called on EBADF to verify fds */	597	/* called on EBADF to verify fds */
440	static void	598	static void noinline
441	fd_ebadf (EV_P)	599	fd_ebadf (EV_P)
442	{	600	{
443	int fd;	601	int fd;
444		602
445	for (fd = 0; fd < anfdmax; ++fd)	603	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	605	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	606	fd_kill (EV_A_ fd);
449	}	607	}
450		608
451	/* 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 */
452	static void	610	static void noinline
453	fd_enomem (EV_P)	611	fd_enomem (EV_P)
454	{	612	{
455	int fd;	613	int fd;
456		614
457	for (fd = anfdmax; fd--; )	615	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	618	fd_kill (EV_A_ fd);
461	return;	619	return;
462	}	620	}
463	}	621	}
464		622
465	/* 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 */
466	static void	624	static void noinline
467	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
468	{	626	{
469	int fd;	627	int fd;
470		628
471	/* this should be highly optimised to not do anything but set a flag */
472	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
473	if (anfds [fd].events)	630	if (anfds [fd].events)
474	{	631	{
475	anfds [fd].events = 0;	632	anfds [fd].events = 0;
476	fd_change (EV_A_ fd);	633	fd_change (EV_A_ fd, EV_IOFDSET);
477	}	634	}
478	}	635	}
479		636
480	/*****************************************************************************/	637	/*****************************************************************************/
481		638
482	static void	639	void inline_speed
483	upheap (WT *heap, int k)	640	upheap (WT *heap, int k)
484	{	641	{
485	WT w = heap [k];	642	WT w = heap [k];
486		643
487	while (k && heap [k >> 1]->at > w->at)	644	while (k)
488	{	645	{
		646	int p = (k - 1) >> 1;
		647
		648	if (heap [p]->at <= w->at)
		649	break;
		650
489	heap [k] = heap [k >> 1];	651	heap [k] = heap [p];
490	((W)heap [k])->active = k + 1;	652	((W)heap [k])->active = k + 1;
491	k >>= 1;	653	k = p;
492	}	654	}
493		655
494	heap [k] = w;	656	heap [k] = w;
495	((W)heap [k])->active = k + 1;	657	((W)heap [k])->active = k + 1;
496
497	}	658	}
498		659
499	static void	660	void inline_speed
500	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
501	{	662	{
502	WT w = heap [k];	663	WT w = heap [k];
503		664
504	while (k < (N >> 1))	665	for (;;)
505	{	666	{
506	int j = k << 1;	667	int c = (k << 1) + 1;
507		668
508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
509	++j;
510
511	if (w->at <= heap [j]->at)
512	break;	670	break;
513		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
514	heap [k] = heap [j];	678	heap [k] = heap [c];
515	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
516	k = j;	681	k = c;
517	}	682	}
518		683
519	heap [k] = w;	684	heap [k] = w;
520	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686	}
		687
		688	void inline_size
		689	adjustheap (WT *heap, int N, int k)
		690	{
		691	upheap (heap, k);
		692	downheap (heap, N, k);
521	}	693	}
522		694
523	/*****************************************************************************/	695	/*****************************************************************************/
524		696
525	typedef struct	697	typedef struct
…		…
531	static ANSIG *signals;	703	static ANSIG *signals;
532	static int signalmax;	704	static int signalmax;
533		705
534	static int sigpipe [2];	706	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	708	static ev_io sigev;
537		709
538	static void	710	void inline_size
539	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
540	{	712	{
541	while (count--)	713	while (count--)
542	{	714	{
543	base->head = 0;	715	base->head = 0;
…		…
548	}	720	}
549		721
550	static void	722	static void
551	sighandler (int signum)	723	sighandler (int signum)
552	{	724	{
553	#if WIN32	725	#if _WIN32
554	signal (signum, sighandler);	726	signal (signum, sighandler);
555	#endif	727	#endif
556		728
557	signals [signum - 1].gotsig = 1;	729	signals [signum - 1].gotsig = 1;
558		730
559	if (!gotsig)	731	if (!gotsig)
560	{	732	{
561	int old_errno = errno;	733	int old_errno = errno;
562	gotsig = 1;	734	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	736	errno = old_errno;
569	}	737	}
570	}	738	}
571		739
572	void	740	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
574	{	742	{
575	WL w;	743	WL w;
576		744
577	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
578	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));
579	#endif	747	#endif
580		748
581	--signum;	749	--signum;
582		750
583	if (signum < 0 || signum >= signalmax)	751	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	758	}
591		759
592	static void	760	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
594	{	762	{
595	int signum;	763	int signum;
596		764
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	766	gotsig = 0;
603		767
604	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
607	}	771	}
608		772
609	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
610	siginit (EV_P)	786	siginit (EV_P)
611	{	787	{
612	#ifndef WIN32	788	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	789	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		790
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	791	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	792	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	794	}
625		795
626	/*****************************************************************************/	796	/*****************************************************************************/
627		797
628	static struct ev_child *childs [PID_HASHSIZE];	798	static WL childs [EV_PID_HASHSIZE];
629		799
630	#ifndef WIN32	800	#ifndef _WIN32
631		801
632	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	}
633		818
634	#ifndef WCONTINUED	819	#ifndef WCONTINUED
635	# define WCONTINUED 0	820	# define WCONTINUED 0
636	#endif	821	#endif
637		822
638	static void	823	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)	824	childcb (EV_P_ ev_signal *sw, int revents)
655	{	825	{
656	int pid, status;	826	int pid, status;
657		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
660	/* 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 */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		838
663	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
664	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 */
665	}
666	}	842	}
667		843
668	#endif	844	#endif
669		845
670	/*****************************************************************************/	846	/*****************************************************************************/
671		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
672	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	852	# include "ev_kqueue.c"
674	#endif	853	#endif
675	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	855	# include "ev_epoll.c"
…		…
693	{	872	{
694	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
695	}	874	}
696		875
697	/* 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 */
698	static int	877	int inline_size
699	enable_secure (void)	878	enable_secure (void)
700	{	879	{
701	#ifdef WIN32	880	#ifdef _WIN32
702	return 0;	881	return 0;
703	#else	882	#else
704	return getuid () != geteuid ()	883	return getuid () != geteuid ()
705	|| getgid () != getegid ();	884	|| getgid () != getegid ();
706	#endif	885	#endif
707	}	886	}
708		887
709	int	888	unsigned int
710	ev_method (EV_P)	889	ev_supported_backends (void)
711	{	890	{
712	return method;	891	unsigned int flags = 0;
713	}
714		892
715	static void	893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
716	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)
717	{	904	{
718	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)
719	{	944	{
720	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
721	{	946	{
722	struct timespec ts;	947	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	949	have_monotonic = 1;
725	}	950	}
726	#endif	951	#endif
727		952
728	rt_now = ev_time ();	953	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	954	mn_now = get_clock ();
730	now_floor = mn_now;	955	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
732		957
733	if (methods == EVMETHOD_AUTO)	958	/* pid check not overridable via env */
734	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"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		968
739	method = 0;	969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
740	#if EV_USE_WIN32	974	#if EV_USE_INOTIFY
741	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);
742	#endif	980	#endif
743	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	983	#endif
746	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	986	#endif
749	#if EV_USE_POLL	987	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	989	#endif
752	#if EV_USE_SELECT	990	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	992	#endif
755		993
756	ev_watcher_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
758	}	996	}
759	}	997	}
760		998
761	void	999	static void noinline
762	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
763	{	1001	{
764	int i;	1002	int i;
765		1003
766	#if EV_USE_WIN32	1004	#if EV_USE_INOTIFY
767	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);
768	#endif	1014	#endif
769	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	1017	#endif
772	#if EV_USE_EPOLL	1018	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	1020	#endif
775	#if EV_USE_POLL	1021	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	1023	#endif
778	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	1026	#endif
781		1027
782	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
783	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
784		1035
785	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	1037	array_free (fdchange, EMPTY);
787	array_free_microshit (timer);	1038	array_free (timer, EMPTY);
788	array_free_microshit (periodic);	1039	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	1040	array_free (periodic, EMPTY);
790	array_free_microshit (prepare);	1041	#endif
791	array_free_microshit (check);	1042	array_free (prepare, EMPTY);
		1043	array_free (check, EMPTY);
792		1044
793	method = 0;	1045	backend = 0;
794	}	1046	}
795		1047
796	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
797	loop_fork (EV_P)	1051	loop_fork (EV_P)
798	{	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
799	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801	#endif	1061	#endif
802	#if EV_USE_KQUEUE	1062	#if EV_USE_INOTIFY
803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1063	infy_fork (EV_A);
804	#endif	1064	#endif
805		1065
806	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
807	{	1067	{
808	/* default loop */	1068	/* default loop */
…		…
821	postfork = 0;	1081	postfork = 0;
822	}	1082	}
823		1083
824	#if EV_MULTIPLICITY	1084	#if EV_MULTIPLICITY
825	struct ev_loop *	1085	struct ev_loop *
826	ev_loop_new (int methods)	1086	ev_loop_new (unsigned int flags)
827	{	1087	{
828	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));
829		1089
830	memset (loop, 0, sizeof (struct ev_loop));	1090	memset (loop, 0, sizeof (struct ev_loop));
831		1091
832	loop_init (EV_A_ methods);	1092	loop_init (EV_A_ flags);
833		1093
834	if (ev_method (EV_A))	1094	if (ev_backend (EV_A))
835	return loop;	1095	return loop;
836		1096
837	return 0;	1097	return 0;
838	}	1098	}
839		1099
…		…
852		1112
853	#endif	1113	#endif
854		1114
855	#if EV_MULTIPLICITY	1115	#if EV_MULTIPLICITY
856	struct ev_loop *	1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
857	#else	1118	#else
858	int	1119	int
		1120	ev_default_loop (unsigned int flags)
859	#endif	1121	#endif
860	ev_default_loop (int methods)
861	{	1122	{
862	if (sigpipe [0] == sigpipe [1])	1123	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	1124	if (pipe (sigpipe))
864	return 0;	1125	return 0;
865		1126
866	if (!default_loop)	1127	if (!ev_default_loop_ptr)
867	{	1128	{
868	#if EV_MULTIPLICITY	1129	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1131	#else
871	default_loop = 1;	1132	ev_default_loop_ptr = 1;
872	#endif	1133	#endif
873		1134
874	loop_init (EV_A_ methods);	1135	loop_init (EV_A_ flags);
875		1136
876	if (ev_method (EV_A))	1137	if (ev_backend (EV_A))
877	{	1138	{
878	siginit (EV_A);	1139	siginit (EV_A);
879		1140
880	#ifndef WIN32	1141	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1143	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1144	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1146	#endif
886	}	1147	}
887	else	1148	else
888	default_loop = 0;	1149	ev_default_loop_ptr = 0;
889	}	1150	}
890		1151
891	return default_loop;	1152	return ev_default_loop_ptr;
892	}	1153	}
893		1154
894	void	1155	void
895	ev_default_destroy (void)	1156	ev_default_destroy (void)
896	{	1157	{
897	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1160	#endif
900		1161
901	#ifndef WIN32	1162	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1163	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1164	ev_signal_stop (EV_A_ &childev);
904	#endif	1165	#endif
905		1166
906	ev_ref (EV_A); /* signal watcher */	1167	ev_ref (EV_A); /* signal watcher */
…		…
914		1175
915	void	1176	void
916	ev_default_fork (void)	1177	ev_default_fork (void)
917	{	1178	{
918	#if EV_MULTIPLICITY	1179	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1180	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1181	#endif
921		1182
922	if (method)	1183	if (backend)
923	postfork = 1;	1184	postfork = 1;
924	}	1185	}
925		1186
926	/*****************************************************************************/	1187	/*****************************************************************************/
927		1188
928	static int	1189	void
929	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
930	{	1191	{
931	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
932
933	for (pri = NUMPRI; pri--; )
934	if (pendingcnt [pri])
935	return 1;
936
937	return 0;
938	}	1193	}
939		1194
940	static void	1195	void inline_speed
941	call_pending (EV_P)	1196	call_pending (EV_P)
942	{	1197	{
943	int pri;	1198	int pri;
944		1199
945	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
947	{	1202	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1204
950	if (p->w)	1205	if (expect_true (p->w))
951	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
952	p->w->pending = 0;	1209	p->w->pending = 0;
953	p->w->cb (EV_A_ p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
954	}	1211	}
955	}	1212	}
956	}	1213	}
957		1214
958	static void	1215	void inline_size
959	timers_reify (EV_P)	1216	timers_reify (EV_P)
960	{	1217	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1219	{
963	struct ev_timer *w = timers [0];	1220	ev_timer *w = (ev_timer *)timers [0];
964		1221
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
966		1223
967	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
968	if (w->repeat)	1225	if (w->repeat)
969	{	1226	{
970	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
971	((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
972	downheap ((WT *)timers, timercnt, 0);	1233	downheap (timers, timercnt, 0);
973	}	1234	}
974	else	1235	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1237
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1239	}
979	}	1240	}
980		1241
981	static void	1242	#if EV_PERIODIC_ENABLE
		1243	void inline_size
982	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
983	{	1245	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1247	{
986	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = (ev_periodic *)periodics [0];
987		1249
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
989		1251
990	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
992	{	1254	{
993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1255	((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));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap (periodics, periodiccnt, 0);
997	}	1258	}
998	else if (w->interval)	1259	else if (w->interval)
999	{	1260	{
1000	((WT)w)->at += floor ((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;
1001	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1263	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);	1264	downheap (periodics, periodiccnt, 0);
1003	}	1265	}
1004	else	1266	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1268
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1270	}
1009	}	1271	}
1010		1272
1011	static void	1273	static void noinline
1012	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1013	{	1275	{
1014	int i;	1276	int i;
1015		1277
1016	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1018	{	1280	{
1019	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = (ev_periodic *)periodics [i];
1020		1282
1021	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1285	else if (w->interval)
1024	((WT)w)->at += ceil ((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;
1025	}	1287	}
1026		1288
1027	/* now rebuild the heap */	1289	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap (periodics, periodiccnt, i);
1030	}	1292	}
		1293	#endif
1031		1294
1032	inline int	1295	#if EV_IDLE_ENABLE
1033	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1034	{	1298	{
1035	mn_now = get_clock ();	1299	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	}	1300	{
1042	else	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	}
1043	{	1314	}
1044	now_floor = mn_now;
1045	rt_now = ev_time ();
1046	return 1;
1047	}
1048	}	1315	}
		1316	#endif
1049		1317
1050	static void	1318	void inline_speed
1051	time_update (EV_P)	1319	time_update (EV_P_ ev_tstamp max_block)
1052	{	1320	{
1053	int i;	1321	int i;
1054		1322
1055	#if EV_USE_MONOTONIC	1323	#if EV_USE_MONOTONIC
1056	if (expect_true (have_monotonic))	1324	if (expect_true (have_monotonic))
1057	{	1325	{
1058	if (time_update_monotonic (EV_A))	1326	ev_tstamp odiff = rtmn_diff;
		1327
		1328	mn_now = get_clock ();
		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
		1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1059	{	1333	{
1060	ev_tstamp odiff = rtmn_diff;	1334	ev_rt_now = rtmn_diff + mn_now;
		1335	return;
		1336	}
1061		1337
		1338	now_floor = mn_now;
		1339	ev_rt_now = ev_time ();
		1340
1062	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1341	/* loop a few times, before making important decisions.
		1342	* on the choice of "4": one iteration isn't enough,
		1343	* in case we get preempted during the calls to
		1344	* ev_time and get_clock. a second call is almost guaranteed
		1345	* to succeed in that case, though. and looping a few more times
		1346	* doesn't hurt either as we only do this on time-jumps or
		1347	* in the unlikely event of having been preempted here.
		1348	*/
		1349	for (i = 4; --i; )
1063	{	1350	{
1064	rtmn_diff = rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1065		1352
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1354	return; /* all is well */
1068		1355
1069	rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1357	mn_now = get_clock ();
1071	now_floor = mn_now;	1358	now_floor = mn_now;
1072	}	1359	}
1073		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
1074	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1376	#endif
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
		1378	for (i = 0; i < timercnt; ++i)
		1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1077	}	1380	}
1078	}
1079	else
1080	#endif
1081	{
1082	rt_now = ev_time ();
1083		1381
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;	1382	mn_now = ev_rt_now;
1094	}	1383	}
1095	}	1384	}
1096		1385
1097	void	1386	void
1098	ev_ref (EV_P)	1387	ev_ref (EV_P)
…		…
1109	static int loop_done;	1398	static int loop_done;
1110		1399
1111	void	1400	void
1112	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1113	{	1402	{
1114	double block;
1115	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 */
1116		1408
1117	do	1409	do
1118	{	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
1119	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1120	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1121	{	1432	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1123	call_pending (EV_A);	1434	call_pending (EV_A);
1124	}	1435	}
1125		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1126	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1127	if (expect_false (postfork))	1441	if (expect_false (postfork))
1128	loop_fork (EV_A);	1442	loop_fork (EV_A);
1129		1443
1130	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1445	fd_reify (EV_A);
1132		1446
1133	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1134		1450
1135	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1136	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1137	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);
1140	else	1453	else
1141	#endif
1142	{	1454	{
1143	rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1144	mn_now = rt_now;	1456	time_update (EV_A_ 1e100);
1145	}
1146		1457
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1152		1459
1153	if (timercnt)	1460	if (timercnt)
1154	{	1461	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1463	if (block > to) block = to;
1157	}	1464	}
1158		1465
		1466	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1467	if (periodiccnt)
1160	{	1468	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1470	if (block > to) block = to;
1163	}	1471	}
		1472	#endif
1164		1473
1165	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1166	}	1475	}
1167		1476
		1477	++loop_count;
1168	method_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1169		1479
1170	/* update rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1172		1483
1173	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
		1486	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
		1488	#endif
1176		1489
		1490	#if EV_IDLE_ENABLE
1177	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1180		1494
1181	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1496	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1498
1185	call_pending (EV_A);	1499	call_pending (EV_A);
		1500
1186	}	1501	}
1187	while (activecnt && !loop_done);	1502	while (expect_true (activecnt && !loop_done));
1188		1503
1189	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1190	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1191	}	1506	}
1192		1507
1193	void	1508	void
1194	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1195	{	1510	{
1196	loop_done = how;	1511	loop_done = how;
1197	}	1512	}
1198		1513
1199	/*****************************************************************************/	1514	/*****************************************************************************/
1200		1515
1201	inline void	1516	void inline_size
1202	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1203	{	1518	{
1204	elem->next = *head;	1519	elem->next = *head;
1205	*head = elem;	1520	*head = elem;
1206	}	1521	}
1207		1522
1208	inline void	1523	void inline_size
1209	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1210	{	1525	{
1211	while (*head)	1526	while (*head)
1212	{	1527	{
1213	if (*head == elem)	1528	if (*head == elem)
…		…
1218		1533
1219	head = &(*head)->next;	1534	head = &(*head)->next;
1220	}	1535	}
1221	}	1536	}
1222		1537
1223	inline void	1538	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1225	{	1540	{
1226	if (w->pending)	1541	if (w->pending)
1227	{	1542	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1544	w->pending = 0;
1230	}	1545	}
1231	}	1546	}
1232		1547
1233	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
1234	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1235	{	1576	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238
1239	w->active = active;	1578	w->active = active;
1240	ev_ref (EV_A);	1579	ev_ref (EV_A);
1241	}	1580	}
1242		1581
1243	inline void	1582	void inline_size
1244	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1245	{	1584	{
1246	ev_unref (EV_A);	1585	ev_unref (EV_A);
1247	w->active = 0;	1586	w->active = 0;
1248	}	1587	}
1249		1588
1250	/*****************************************************************************/	1589	/*****************************************************************************/
1251		1590
1252	void	1591	void noinline
1253	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1254	{	1593	{
1255	int fd = w->fd;	1594	int fd = w->fd;
1256		1595
1257	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
1258	return;	1597	return;
1259		1598
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1600
1262	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
1263	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1264	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add (&anfds[fd].head, (WL)w);
1265		1604
1266	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);
		1606	w->events &= ~ EV_IOFDSET;
1267	}	1607	}
1268		1608
1269	void	1609	void noinline
1270	ev_io_stop (EV_P_ struct ev_io *w)	1610	ev_io_stop (EV_P_ ev_io *w)
1271	{	1611	{
1272	ev_clear_pending (EV_A_ (W)w);	1612	clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1613	if (expect_false (!ev_is_active (w)))
1274	return;	1614	return;
1275		1615
		1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1617
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1618	wlist_del (&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1619	ev_stop (EV_A_ (W)w);
1278		1620
1279	fd_change (EV_A_ w->fd);	1621	fd_change (EV_A_ w->fd, 0);
1280	}	1622	}
1281		1623
1282	void	1624	void noinline
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1625	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1626	{
1285	if (ev_is_active (w))	1627	if (expect_false (ev_is_active (w)))
1286	return;	1628	return;
1287		1629
1288	((WT)w)->at += mn_now;	1630	((WT)w)->at += mn_now;
1289		1631
1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291		1633
1292	ev_start (EV_A_ (W)w, ++timercnt);	1634	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1636	timers [timercnt - 1] = (WT)w;
1295	upheap ((WT *)timers, timercnt - 1);	1637	upheap (timers, timercnt - 1);
1296		1638
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1298	}	1640	}
1299		1641
1300	void	1642	void noinline
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1643	ev_timer_stop (EV_P_ ev_timer *w)
1302	{	1644	{
1303	ev_clear_pending (EV_A_ (W)w);	1645	clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))	1646	if (expect_false (!ev_is_active (w)))
1305	return;	1647	return;
1306		1648
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1308		1650
1309	if (((W)w)->active < timercnt--)	1651	{
		1652	int active = ((W)w)->active;
		1653
		1654	if (expect_true (--active < --timercnt))
1310	{	1655	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1656	timers [active] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1657	adjustheap (timers, timercnt, active);
1313	}	1658	}
		1659	}
1314		1660
1315	((WT)w)->at = w->repeat;	1661	((WT)w)->at -= mn_now;
1316		1662
1317	ev_stop (EV_A_ (W)w);	1663	ev_stop (EV_A_ (W)w);
1318	}	1664	}
1319		1665
1320	void	1666	void noinline
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1667	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1668	{
1323	if (ev_is_active (w))	1669	if (ev_is_active (w))
1324	{	1670	{
1325	if (w->repeat)	1671	if (w->repeat)
1326	{	1672	{
1327	((WT)w)->at = mn_now + w->repeat;	1673	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1674	adjustheap (timers, timercnt, ((W)w)->active - 1);
1329	}	1675	}
1330	else	1676	else
1331	ev_timer_stop (EV_A_ w);	1677	ev_timer_stop (EV_A_ w);
1332	}	1678	}
1333	else if (w->repeat)	1679	else if (w->repeat)
		1680	{
		1681	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1682	ev_timer_start (EV_A_ w);
		1683	}
1335	}	1684	}
1336		1685
1337	void	1686	#if EV_PERIODIC_ENABLE
		1687	void noinline
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1688	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1689	{
1340	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1341	return;	1691	return;
1342		1692
1343	if (w->reschedule_cb)	1693	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1695	else if (w->interval)
1346	{	1696	{
1347	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.));
1348	/* 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 */
1349	((WT)w)->at += ceil ((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;
1350	}	1700	}
		1701	else
		1702	((WT)w)->at = w->offset;
1351		1703
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1704	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1706	periodics [periodiccnt - 1] = (WT)w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1707	upheap (periodics, periodiccnt - 1);
1356		1708
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1358	}	1710	}
1359		1711
1360	void	1712	void noinline
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1713	ev_periodic_stop (EV_P_ ev_periodic *w)
1362	{	1714	{
1363	ev_clear_pending (EV_A_ (W)w);	1715	clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))	1716	if (expect_false (!ev_is_active (w)))
1365	return;	1717	return;
1366		1718
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1368		1720
1369	if (((W)w)->active < periodiccnt--)	1721	{
		1722	int active = ((W)w)->active;
		1723
		1724	if (expect_true (--active < --periodiccnt))
1370	{	1725	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1726	periodics [active] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1727	adjustheap (periodics, periodiccnt, active);
1373	}	1728	}
		1729	}
1374		1730
1375	ev_stop (EV_A_ (W)w);	1731	ev_stop (EV_A_ (W)w);
1376	}	1732	}
1377		1733
1378	void	1734	void noinline
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1735	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1736	{
		1737	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1738	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1739	ev_periodic_start (EV_A_ w);
1383	}	1740	}
1384		1741	#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		1742
1451	#ifndef SA_RESTART	1743	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1744	# define SA_RESTART 0
1453	#endif	1745	#endif
1454		1746
1455	void	1747	void noinline
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1748	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1749	{
1458	#if EV_MULTIPLICITY	1750	#if EV_MULTIPLICITY
1459	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));
1460	#endif	1752	#endif
1461	if (ev_is_active (w))	1753	if (expect_false (ev_is_active (w)))
1462	return;	1754	return;
1463		1755
1464	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));
1465		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
1466	ev_start (EV_A_ (W)w, 1);	1772	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);	1773	wlist_add (&signals [w->signum - 1].head, (WL)w);
1469		1774
1470	if (!((WL)w)->next)	1775	if (!((WL)w)->next)
1471	{	1776	{
1472	#if WIN32	1777	#if _WIN32
1473	signal (w->signum, sighandler);	1778	signal (w->signum, sighandler);
1474	#else	1779	#else
1475	struct sigaction sa;	1780	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1781	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1782	sigfillset (&sa.sa_mask);
…		…
1479	sigaction (w->signum, &sa, 0);	1784	sigaction (w->signum, &sa, 0);
1480	#endif	1785	#endif
1481	}	1786	}
1482	}	1787	}
1483		1788
1484	void	1789	void noinline
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1790	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1791	{
1487	ev_clear_pending (EV_A_ (W)w);	1792	clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1793	if (expect_false (!ev_is_active (w)))
1489	return;	1794	return;
1490		1795
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1796	wlist_del (&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1797	ev_stop (EV_A_ (W)w);
1493		1798
1494	if (!signals [w->signum - 1].head)	1799	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1800	signal (w->signum, SIG_DFL);
1496	}	1801	}
1497		1802
1498	void	1803	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1804	ev_child_start (EV_P_ ev_child *w)
1500	{	1805	{
1501	#if EV_MULTIPLICITY	1806	#if EV_MULTIPLICITY
1502	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));
1503	#endif	1808	#endif
1504	if (ev_is_active (w))	1809	if (expect_false (ev_is_active (w)))
1505	return;	1810	return;
1506		1811
1507	ev_start (EV_A_ (W)w, 1);	1812	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1509	}	1814	}
1510		1815
1511	void	1816	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1817	ev_child_stop (EV_P_ ev_child *w)
1513	{	1818	{
1514	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1820	if (expect_false (!ev_is_active (w)))
1516	return;	1821	return;
1517		1822
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1824	ev_stop (EV_A_ (W)w);
1520	}	1825	}
1521		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
1522	/*****************************************************************************/	2249	/*****************************************************************************/
1523		2250
1524	struct ev_once	2251	struct ev_once
1525	{	2252	{
1526	struct ev_io io;	2253	ev_io io;
1527	struct ev_timer to;	2254	ev_timer to;
1528	void (*cb)(int revents, void *arg);	2255	void (*cb)(int revents, void *arg);
1529	void *arg;	2256	void *arg;
1530	};	2257	};
1531		2258
1532	static void	2259	static void
…		…
1541		2268
1542	cb (revents, arg);	2269	cb (revents, arg);
1543	}	2270	}
1544		2271
1545	static void	2272	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	2273	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	2274	{
1548	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);
1549	}	2276	}
1550		2277
1551	static void	2278	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2279	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	2280	{
1554	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);
1555	}	2282	}
1556		2283
1557	void	2284	void
1558	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)
1559	{	2286	{
1560	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));
1561		2288
1562	if (!once)	2289	if (expect_false (!once))
		2290	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2291	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	2292	return;
1565	{	2293	}
		2294
1566	once->cb = cb;	2295	once->cb = cb;
1567	once->arg = arg;	2296	once->arg = arg;
1568		2297
1569	ev_watcher_init (&once->io, once_cb_io);	2298	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	2299	if (fd >= 0)
1571	{	2300	{
1572	ev_io_set (&once->io, fd, events);	2301	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	2302	ev_io_start (EV_A_ &once->io);
1574	}	2303	}
1575		2304
1576	ev_watcher_init (&once->to, once_cb_to);	2305	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	2306	if (timeout >= 0.)
1578	{	2307	{
1579	ev_timer_set (&once->to, timeout, 0.);	2308	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	2309	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	2310	}
1583	}	2311	}
1584		2312
		2313	#ifdef __cplusplus
		2314	}
		2315	#endif
		2316

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