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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		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
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# include <sys/wait.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
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		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
124	/**/	219	/**/
125		220
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#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) */	222	#define MAX_BLOCKTIME 59.743 /* 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 */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130
131	#include "ev.h"
132		224
133	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
135	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
136	#else	235	#else
137	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
138	# define inline static	238	# define inline_size static
		239	# define noinline
139	#endif	240	#endif
140		241
141	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
143		244
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
147	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
150		254
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		256
153	#if WIN32	257	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	258	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	259	#endif
211		260
212	/*****************************************************************************/	261	/*****************************************************************************/
213		262
214	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
215		264
		265	void
216	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
217	{	267	{
218	syserr_cb = cb;	268	syserr_cb = cb;
219	}	269	}
220		270
221	static void	271	static void noinline
222	syserr (const char *msg)	272	syserr (const char *msg)
223	{	273	{
224	if (!msg)	274	if (!msg)
225	msg = "(libev) system error";	275	msg = "(libev) system error";
226		276
…		…
233	}	283	}
234	}	284	}
235		285
236	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
237		287
		288	void
238	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
239	{	290	{
240	alloc = cb;	291	alloc = cb;
241	}	292	}
242		293
243	static void *	294	inline_speed void *
244	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
245	{	296	{
246	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
247		298
248	if (!ptr && size)	299	if (!ptr && size)
…		…
262	typedef struct	313	typedef struct
263	{	314	{
264	WL head;	315	WL head;
265	unsigned char events;	316	unsigned char events;
266	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
267	} ANFD;	321	} ANFD;
268		322
269	typedef struct	323	typedef struct
270	{	324	{
271	W w;	325	W w;
272	int events;	326	int events;
273	} ANPENDING;	327	} ANPENDING;
274		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
275	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
276		337
277	struct ev_loop	338	struct ev_loop
278	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	343	#include "ev_vars.h"
281	};
282	# undef VAR	344	#undef VAR
		345	};
283	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
284		350
285	#else	351	#else
286		352
		353	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	355	#include "ev_vars.h"
289	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
290		359
291	#endif	360	#endif
292		361
293	/*****************************************************************************/	362	/*****************************************************************************/
294		363
295	inline ev_tstamp	364	ev_tstamp
296	ev_time (void)	365	ev_time (void)
297	{	366	{
298	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
299	struct timespec ts;	368	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
304	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
305	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
306	#endif	375	#endif
307	}	376	}
308		377
309	inline ev_tstamp	378	ev_tstamp inline_size
310	get_clock (void)	379	get_clock (void)
311	{	380	{
312	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
313	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
314	{	383	{
…		…
319	#endif	388	#endif
320		389
321	return ev_time ();	390	return ev_time ();
322	}	391	}
323		392
		393	#if EV_MULTIPLICITY
324	ev_tstamp	394	ev_tstamp
325	ev_now (EV_P)	395	ev_now (EV_P)
326	{	396	{
327	return rt_now;	397	return ev_rt_now;
328	}	398	}
		399	#endif
329		400
330	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
331		402
332	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
334	{ \	405	{ \
335	int newcnt = cur; \	406	int newcnt = cur; \
336	do \	407	do \
337	{ \	408	{ \
338	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
339	} \	410	} \
340	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
341	\	412	\
342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
343	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
344	cur = newcnt; \	415	cur = newcnt; \
345	}	416	}
346		417
347	#define array_slim(stem) \	418	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	420	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353	}	424	}
354
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		425
360	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
362		428
363	/*****************************************************************************/	429	/*****************************************************************************/
364		430
365	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
366	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
367	{	461	{
368	while (count--)	462	while (count--)
369	{	463	{
370	base->head = 0;	464	base->head = 0;
…		…
373		467
374	++base;	468	++base;
375	}	469	}
376	}	470	}
377		471
378	static void	472	void inline_speed
379	event (EV_P_ W w, int events)
380	{
381	if (w->pending)
382	{
383	pendings [ABSPRI (w)][w->pending - 1].events |= events;
384	return;
385	}
386
387	w->pending = ++pendingcnt [ABSPRI (w)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389	pendings [ABSPRI (w)][w->pending - 1].w = w;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;
391	}
392
393	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{
396	int i;
397
398	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);
400	}
401
402	static void
403	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
404	{	474	{
405	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	476	ev_io *w;
407		477
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	{	479	{
410	int ev = w->events & events;	480	int ev = w->events & revents;
411		481
412	if (ev)	482	if (ev)
413	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
414	}	484	}
415	}	485	}
416		486
417	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
418		492
419	static void	493	void inline_size
420	fd_reify (EV_P)	494	fd_reify (EV_P)
421	{	495	{
422	int i;	496	int i;
423		497
424	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
425	{	499	{
426	int fd = fdchanges [i];	500	int fd = fdchanges [i];
427	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
428	struct ev_io *w;	502	ev_io *w;
429		503
430	int events = 0;	504	int events = 0;
431		505
432	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
433	events |= w->events;	507	events |= w->events;
434		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
435	anfd->reify = 0;	518	anfd->reify = 0;
436		519
437	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	521	anfd->events = events;
439	}	522	}
440		523
441	fdchangecnt = 0;	524	fdchangecnt = 0;
442	}	525	}
443		526
444	static void	527	void inline_size
445	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
446	{	529	{
447	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
448	return;	531	return;
449		532
450	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
451		534
452	++fdchangecnt;	535	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
455	}	538	}
456		539
457	static void	540	void inline_speed
458	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
459	{	542	{
460	struct ev_io *w;	543	ev_io *w;
461		544
462	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
463	{	546	{
464	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
465	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
466	}	549	}
467	}	550	}
468		551
469	static int	552	int inline_size
470	fd_valid (int fd)	553	fd_valid (int fd)
471	{	554	{
472	#ifdef WIN32	555	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
474	#else	557	#else
475	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
476	#endif	559	#endif
477	}	560	}
478		561
479	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
480	static void	563	static void noinline
481	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
482	{	565	{
483	int fd;	566	int fd;
484		567
485	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
487	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
488	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
489	}	572	}
490		573
491	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
492	static void	575	static void noinline
493	fd_enomem (EV_P)	576	fd_enomem (EV_P)
494	{	577	{
495	int fd;	578	int fd;
496		579
497	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
500	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
501	return;	584	return;
502	}	585	}
503	}	586	}
504		587
505	/* usually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
506	static void	589	static void noinline
507	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
508	{	591	{
509	int fd;	592	int fd;
510		593
511	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
517	}	600	}
518	}	601	}
519		602
520	/*****************************************************************************/	603	/*****************************************************************************/
521		604
522	static void	605	void inline_speed
523	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
524	{	607	{
525	WT w = heap [k];	608	WT w = heap [k];
526		609
527	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
534	heap [k] = w;	617	heap [k] = w;
535	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
536		619
537	}	620	}
538		621
539	static void	622	void inline_speed
540	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
541	{	624	{
542	WT w = heap [k];	625	WT w = heap [k];
543		626
544	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
558		641
559	heap [k] = w;	642	heap [k] = w;
560	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
561	}	644	}
562		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
		651	}
		652
563	/*****************************************************************************/	653	/*****************************************************************************/
564		654
565	typedef struct	655	typedef struct
566	{	656	{
567	WL head;	657	WL head;
…		…
571	static ANSIG *signals;	661	static ANSIG *signals;
572	static int signalmax;	662	static int signalmax;
573		663
574	static int sigpipe [2];	664	static int sigpipe [2];
575	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
576	static struct ev_io sigev;	666	static ev_io sigev;
577		667
578	static void	668	void inline_size
579	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
580	{	670	{
581	while (count--)	671	while (count--)
582	{	672	{
583	base->head = 0;	673	base->head = 0;
…		…
588	}	678	}
589		679
590	static void	680	static void
591	sighandler (int signum)	681	sighandler (int signum)
592	{	682	{
593	#if WIN32	683	#if _WIN32
594	signal (signum, sighandler);	684	signal (signum, sighandler);
595	#endif	685	#endif
596		686
597	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
598		688
…		…
603	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	694	errno = old_errno;
605	}	695	}
606	}	696	}
607		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 || signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
608	static void	718	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
610	{	720	{
611	WL w;
612	int signum;	721	int signum;
613		722
614	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	724	gotsig = 0;
616		725
617	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
619	{	728	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;
621
622	for (w = signals [signum].head; w; w = w->next)
623	event (EV_A_ (W)w, EV_SIGNAL);
624	}
625	}	729	}
626		730
627	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
628	siginit (EV_P)	744	siginit (EV_P)
629	{	745	{
630	#ifndef WIN32	746	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		748
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	752	}
643		753
644	/*****************************************************************************/	754	/*****************************************************************************/
645		755
646	static struct ev_child *childs [PID_HASHSIZE];	756	static ev_child *childs [EV_PID_HASHSIZE];
647		757
648	#ifndef WIN32	758	#ifndef _WIN32
649		759
650	static struct ev_signal childev;	760	static ev_signal childev;
651		761
652	#ifndef WCONTINUED	762	void inline_speed
653	# define WCONTINUED 0
654	#endif
655
656	static void
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658	{	764	{
659	struct ev_child *w;	765	ev_child *w;
660		766
661	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
662	if (w->pid == pid || !w->pid)	768	if (w->pid == pid || !w->pid)
663	{	769	{
664	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665	w->rpid = pid;	771	w->rpid = pid;
666	w->rstatus = status;	772	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	774	}
669	}	775	}
670		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
671	static void	781	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
673	{	783	{
674	int pid, status;	784	int pid, status;
675		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
678	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		796
681	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}
684	}	800	}
685		801
686	#endif	802	#endif
687		803
688	/*****************************************************************************/	804	/*****************************************************************************/
689		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
690	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
692	#endif	811	#endif
693	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
711	{	830	{
712	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
713	}	832	}
714		833
715	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	835	int inline_size
717	enable_secure (void)	836	enable_secure (void)
718	{	837	{
719	#ifdef WIN32	838	#ifdef _WIN32
720	return 0;	839	return 0;
721	#else	840	#else
722	return getuid () != geteuid ()	841	return getuid () != geteuid ()
723	|| getgid () != getegid ();	842	|| getgid () != getegid ();
724	#endif	843	#endif
725	}	844	}
726		845
727	int	846	unsigned int
728	ev_method (EV_P)	847	ev_supported_backends (void)
729	{	848	{
730	return method;	849	unsigned int flags = 0;
731	}
732		850
733	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
735	{	862	{
736	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
737	{	896	{
738	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
739	{	898	{
740	struct timespec ts;	899	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	901	have_monotonic = 1;
743	}	902	}
744	#endif	903	#endif
745		904
746	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	906	mn_now = get_clock ();
748	now_floor = mn_now;	907	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
750		909
751	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		914
757	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
758	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	926	#endif
761	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	929	#endif
764	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	932	#endif
767	#if EV_USE_POLL	933	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	935	#endif
770	#if EV_USE_SELECT	936	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	938	#endif
773		939
774	ev_watcher_init (&sigev, sigcb);	940	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	941	ev_set_priority (&sigev, EV_MAXPRI);
776	}	942	}
777	}	943	}
778		944
779	void	945	static void noinline
780	loop_destroy (EV_P)	946	loop_destroy (EV_P)
781	{	947	{
782	int i;	948	int i;
783		949
784	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	960	#endif
787	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	963	#endif
790	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	966	#endif
793	#if EV_USE_POLL	967	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	969	#endif
796	#if EV_USE_SELECT	970	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	972	#endif
799		973
800	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	975	array_free (pending, [i]);
802		976
803	/* have to use the microsoft-never-gets-it-right macro */	977	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	978	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	979	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	980	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	981	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	982	#endif
809	array_free_microshit (check);	983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
810		986
811	method = 0;	987	backend = 0;
812	}	988	}
813		989
814	static void	990	void inline_size infy_fork (EV_P);
		991
		992	void inline_size
815	loop_fork (EV_P)	993	loop_fork (EV_P)
816	{	994	{
		995	#if EV_USE_PORT
		996	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		997	#endif
		998	#if EV_USE_KQUEUE
		999	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1000	#endif
817	#if EV_USE_EPOLL	1001	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1002	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif	1003	#endif
820	#if EV_USE_KQUEUE	1004	#if EV_USE_INOTIFY
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1005	infy_fork (EV_A);
822	#endif	1006	#endif
823		1007
824	if (ev_is_active (&sigev))	1008	if (ev_is_active (&sigev))
825	{	1009	{
826	/* default loop */	1010	/* default loop */
…		…
828	ev_ref (EV_A);	1012	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	1013	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	1014	close (sigpipe [0]);
831	close (sigpipe [1]);	1015	close (sigpipe [1]);
832		1016
833	while (ev_pipe (sigpipe))	1017	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	1018	syserr ("(libev) error creating pipe");
835		1019
836	siginit (EV_A);	1020	siginit (EV_A);
837	}	1021	}
838		1022
839	postfork = 0;	1023	postfork = 0;
840	}	1024	}
841		1025
842	#if EV_MULTIPLICITY	1026	#if EV_MULTIPLICITY
843	struct ev_loop *	1027	struct ev_loop *
844	ev_loop_new (int methods)	1028	ev_loop_new (unsigned int flags)
845	{	1029	{
846	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1030	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847		1031
848	memset (loop, 0, sizeof (struct ev_loop));	1032	memset (loop, 0, sizeof (struct ev_loop));
849		1033
850	loop_init (EV_A_ methods);	1034	loop_init (EV_A_ flags);
851		1035
852	if (ev_method (EV_A))	1036	if (ev_backend (EV_A))
853	return loop;	1037	return loop;
854		1038
855	return 0;	1039	return 0;
856	}	1040	}
857		1041
…		…
869	}	1053	}
870		1054
871	#endif	1055	#endif
872		1056
873	#if EV_MULTIPLICITY	1057	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	1058	struct ev_loop *
		1059	ev_default_loop_init (unsigned int flags)
878	#else	1060	#else
879	static int default_loop;
880
881	int	1061	int
		1062	ev_default_loop (unsigned int flags)
882	#endif	1063	#endif
883	ev_default_loop (int methods)
884	{	1064	{
885	if (sigpipe [0] == sigpipe [1])	1065	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	1066	if (pipe (sigpipe))
887	return 0;	1067	return 0;
888		1068
889	if (!default_loop)	1069	if (!ev_default_loop_ptr)
890	{	1070	{
891	#if EV_MULTIPLICITY	1071	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1073	#else
894	default_loop = 1;	1074	ev_default_loop_ptr = 1;
895	#endif	1075	#endif
896		1076
897	loop_init (EV_A_ methods);	1077	loop_init (EV_A_ flags);
898		1078
899	if (ev_method (EV_A))	1079	if (ev_backend (EV_A))
900	{	1080	{
901	siginit (EV_A);	1081	siginit (EV_A);
902		1082
903	#ifndef WIN32	1083	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1084	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1085	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1086	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1087	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1088	#endif
909	}	1089	}
910	else	1090	else
911	default_loop = 0;	1091	ev_default_loop_ptr = 0;
912	}	1092	}
913		1093
914	return default_loop;	1094	return ev_default_loop_ptr;
915	}	1095	}
916		1096
917	void	1097	void
918	ev_default_destroy (void)	1098	ev_default_destroy (void)
919	{	1099	{
920	#if EV_MULTIPLICITY	1100	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1101	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1102	#endif
923		1103
924	#ifndef WIN32	1104	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1105	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1106	ev_signal_stop (EV_A_ &childev);
927	#endif	1107	#endif
928		1108
929	ev_ref (EV_A); /* signal watcher */	1109	ev_ref (EV_A); /* signal watcher */
…		…
937		1117
938	void	1118	void
939	ev_default_fork (void)	1119	ev_default_fork (void)
940	{	1120	{
941	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1122	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1123	#endif
944		1124
945	if (method)	1125	if (backend)
946	postfork = 1;	1126	postfork = 1;
947	}	1127	}
948		1128
949	/*****************************************************************************/	1129	/*****************************************************************************/
950		1130
951	static void	1131	int inline_size
		1132	any_pending (EV_P)
		1133	{
		1134	int pri;
		1135
		1136	for (pri = NUMPRI; pri--; )
		1137	if (pendingcnt [pri])
		1138	return 1;
		1139
		1140	return 0;
		1141	}
		1142
		1143	void inline_speed
952	call_pending (EV_P)	1144	call_pending (EV_P)
953	{	1145	{
954	int pri;	1146	int pri;
955		1147
956	for (pri = NUMPRI; pri--; )	1148	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1149	while (pendingcnt [pri])
958	{	1150	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1151	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1152
961	if (p->w)	1153	if (expect_true (p->w))
962	{	1154	{
		1155	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1156
963	p->w->pending = 0;	1157	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1158	EV_CB_INVOKE (p->w, p->events);
965	}	1159	}
966	}	1160	}
967	}	1161	}
968		1162
969	static void	1163	void inline_size
970	timers_reify (EV_P)	1164	timers_reify (EV_P)
971	{	1165	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1166	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1167	{
974	struct ev_timer *w = timers [0];	1168	ev_timer *w = timers [0];
975		1169
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1170	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
977		1171
978	/* first reschedule or stop timer */	1172	/* first reschedule or stop timer */
979	if (w->repeat)	1173	if (w->repeat)
980	{	1174	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1175	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1176
982	((WT)w)->at = mn_now + w->repeat;	1177	((WT)w)->at += w->repeat;
		1178	if (((WT)w)->at < mn_now)
		1179	((WT)w)->at = mn_now;
		1180
983	downheap ((WT *)timers, timercnt, 0);	1181	downheap ((WT *)timers, timercnt, 0);
984	}	1182	}
985	else	1183	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1185
988	event (EV_A_ (W)w, EV_TIMEOUT);	1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1187	}
990	}	1188	}
991		1189
992	static void	1190	#if EV_PERIODIC_ENABLE
		1191	void inline_size
993	periodics_reify (EV_P)	1192	periodics_reify (EV_P)
994	{	1193	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1195	{
997	struct ev_periodic *w = periodics [0];	1196	ev_periodic *w = periodics [0];
998		1197
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1198	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1000		1199
1001	/* first reschedule or stop timer */	1200	/* first reschedule or stop timer */
1002	if (w->interval)	1201	if (w->reschedule_cb)
1003	{	1202	{
		1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1205	downheap ((WT *)periodics, periodiccnt, 0);
		1206	}
		1207	else if (w->interval)
		1208	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1211	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1212	}
1008	else	1213	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1215
1011	event (EV_A_ (W)w, EV_PERIODIC);	1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1217	}
1013	}	1218	}
1014		1219
1015	static void	1220	static void noinline
1016	periodics_reschedule (EV_P)	1221	periodics_reschedule (EV_P)
1017	{	1222	{
1018	int i;	1223	int i;
1019		1224
1020	/* adjust periodics after time jump */	1225	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1226	for (i = 0; i < periodiccnt; ++i)
1022	{	1227	{
1023	struct ev_periodic *w = periodics [i];	1228	ev_periodic *w = periodics [i];
1024		1229
		1230	if (w->reschedule_cb)
		1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1232	else if (w->interval)
1026	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1028
1029	if (fabs (diff) >= 1e-4)
1030	{
1031	ev_periodic_stop (EV_A_ w);
1032	ev_periodic_start (EV_A_ w);
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}
1036	}
1037	}	1234	}
1038	}
1039		1235
1040	inline int	1236	/* now rebuild the heap */
		1237	for (i = periodiccnt >> 1; i--; )
		1238	downheap ((WT *)periodics, periodiccnt, i);
		1239	}
		1240	#endif
		1241
		1242	int inline_size
1041	time_update_monotonic (EV_P)	1243	time_update_monotonic (EV_P)
1042	{	1244	{
1043	mn_now = get_clock ();	1245	mn_now = get_clock ();
1044		1246
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1248	{
1047	rt_now = rtmn_diff + mn_now;	1249	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1250	return 0;
1049	}	1251	}
1050	else	1252	else
1051	{	1253	{
1052	now_floor = mn_now;	1254	now_floor = mn_now;
1053	rt_now = ev_time ();	1255	ev_rt_now = ev_time ();
1054	return 1;	1256	return 1;
1055	}	1257	}
1056	}	1258	}
1057		1259
1058	static void	1260	void inline_size
1059	time_update (EV_P)	1261	time_update (EV_P)
1060	{	1262	{
1061	int i;	1263	int i;
1062		1264
1063	#if EV_USE_MONOTONIC	1265	#if EV_USE_MONOTONIC
…		…
1065	{	1267	{
1066	if (time_update_monotonic (EV_A))	1268	if (time_update_monotonic (EV_A))
1067	{	1269	{
1068	ev_tstamp odiff = rtmn_diff;	1270	ev_tstamp odiff = rtmn_diff;
1069		1271
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1272	/* loop a few times, before making important decisions.
		1273	* on the choice of "4": one iteration isn't enough,
		1274	* in case we get preempted during the calls to
		1275	* ev_time and get_clock. a second call is almost guarenteed
		1276	* to succeed in that case, though. and looping a few more times
		1277	* doesn't hurt either as we only do this on time-jumps or
		1278	* in the unlikely event of getting preempted here.
		1279	*/
		1280	for (i = 4; --i; )
1071	{	1281	{
1072	rtmn_diff = rt_now - mn_now;	1282	rtmn_diff = ev_rt_now - mn_now;
1073		1283
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1285	return; /* all is well */
1076		1286
1077	rt_now = ev_time ();	1287	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1288	mn_now = get_clock ();
1079	now_floor = mn_now;	1289	now_floor = mn_now;
1080	}	1290	}
1081		1291
		1292	# if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1293	periodics_reschedule (EV_A);
		1294	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1295	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1297	}
1086	}	1298	}
1087	else	1299	else
1088	#endif	1300	#endif
1089	{	1301	{
1090	rt_now = ev_time ();	1302	ev_rt_now = ev_time ();
1091		1303
1092	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1304	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{	1305	{
		1306	#if EV_PERIODIC_ENABLE
1094	periodics_reschedule (EV_A);	1307	periodics_reschedule (EV_A);
		1308	#endif
1095		1309
1096	/* adjust timers. this is easy, as the offset is the same for all */	1310	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)	1311	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1312	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1313	}
1100		1314
1101	mn_now = rt_now;	1315	mn_now = ev_rt_now;
1102	}	1316	}
1103	}	1317	}
1104		1318
1105	void	1319	void
1106	ev_ref (EV_P)	1320	ev_ref (EV_P)
…		…
1117	static int loop_done;	1331	static int loop_done;
1118		1332
1119	void	1333	void
1120	ev_loop (EV_P_ int flags)	1334	ev_loop (EV_P_ int flags)
1121	{	1335	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1336	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1337	? EVUNLOOP_ONE
		1338	: EVUNLOOP_CANCEL;
1124		1339
1125	do	1340	while (activecnt)
1126	{	1341	{
		1342	/* we might have forked, so reify kernel state if necessary */
		1343	#if EV_FORK_ENABLE
		1344	if (expect_false (postfork))
		1345	if (forkcnt)
		1346	{
		1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1348	call_pending (EV_A);
		1349	}
		1350	#endif
		1351
1127	/* queue check watchers (and execute them) */	1352	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1353	if (expect_false (preparecnt))
1129	{	1354	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131	call_pending (EV_A);	1356	call_pending (EV_A);
…		…
1137		1362
1138	/* update fd-related kernel structures */	1363	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1364	fd_reify (EV_A);
1140		1365
1141	/* calculate blocking time */	1366	/* calculate blocking time */
		1367	{
		1368	double block;
1142		1369
1143	/* we only need this for !monotonic clockor timers, but as we basically	1370	if (flags & EVLOOP_NONBLOCK || idlecnt)
1144	always have timers, we just calculate it always */	1371	block = 0.; /* do not block at all */
		1372	else
		1373	{
		1374	/* update time to cancel out callback processing overhead */
1145	#if EV_USE_MONOTONIC	1375	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1376	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1377	time_update_monotonic (EV_A);
1148	else	1378	else
1149	#endif	1379	#endif
1150	{	1380	{
1151	rt_now = ev_time ();	1381	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1382	mn_now = ev_rt_now;
1153	}	1383	}
1154		1384
1155	if (flags & EVLOOP_NONBLOCK || idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1385	block = MAX_BLOCKTIME;
1160		1386
1161	if (timercnt)	1387	if (timercnt)
1162	{	1388	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1390	if (block > to) block = to;
1165	}	1391	}
1166		1392
		1393	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1394	if (periodiccnt)
1168	{	1395	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1397	if (block > to) block = to;
1171	}	1398	}
		1399	#endif
1172		1400
1173	if (block < 0.) block = 0.;	1401	if (expect_false (block < 0.)) block = 0.;
1174	}	1402	}
1175		1403
1176	method_poll (EV_A_ block);	1404	backend_poll (EV_A_ block);
		1405	}
1177		1406
1178	/* update rt_now, do magic */	1407	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1408	time_update (EV_A);
1180		1409
1181	/* queue pending timers and reschedule them */	1410	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1411	timers_reify (EV_A); /* relative timers called last */
		1412	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1413	periodics_reify (EV_A); /* absolute timers called first */
		1414	#endif
1184		1415
1185	/* queue idle watchers unless io or timers are pending */	1416	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1417	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1419
1189	/* queue check watchers, to be executed first */	1420	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1421	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1423
1193	call_pending (EV_A);	1424	call_pending (EV_A);
1194	}
1195	while (activecnt && !loop_done);
1196		1425
1197	if (loop_done != 2)	1426	if (expect_false (loop_done))
1198	loop_done = 0;	1427	break;
		1428	}
		1429
		1430	if (loop_done == EVUNLOOP_ONE)
		1431	loop_done = EVUNLOOP_CANCEL;
1199	}	1432	}
1200		1433
1201	void	1434	void
1202	ev_unloop (EV_P_ int how)	1435	ev_unloop (EV_P_ int how)
1203	{	1436	{
1204	loop_done = how;	1437	loop_done = how;
1205	}	1438	}
1206		1439
1207	/*****************************************************************************/	1440	/*****************************************************************************/
1208		1441
1209	inline void	1442	void inline_size
1210	wlist_add (WL *head, WL elem)	1443	wlist_add (WL *head, WL elem)
1211	{	1444	{
1212	elem->next = *head;	1445	elem->next = *head;
1213	*head = elem;	1446	*head = elem;
1214	}	1447	}
1215		1448
1216	inline void	1449	void inline_size
1217	wlist_del (WL *head, WL elem)	1450	wlist_del (WL *head, WL elem)
1218	{	1451	{
1219	while (*head)	1452	while (*head)
1220	{	1453	{
1221	if (*head == elem)	1454	if (*head == elem)
…		…
1226		1459
1227	head = &(*head)->next;	1460	head = &(*head)->next;
1228	}	1461	}
1229	}	1462	}
1230		1463
1231	inline void	1464	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1465	ev_clear_pending (EV_P_ W w)
1233	{	1466	{
1234	if (w->pending)	1467	if (w->pending)
1235	{	1468	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1470	w->pending = 0;
1238	}	1471	}
1239	}	1472	}
1240		1473
1241	inline void	1474	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1475	ev_start (EV_P_ W w, int active)
1243	{	1476	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246		1479
1247	w->active = active;	1480	w->active = active;
1248	ev_ref (EV_A);	1481	ev_ref (EV_A);
1249	}	1482	}
1250		1483
1251	inline void	1484	void inline_size
1252	ev_stop (EV_P_ W w)	1485	ev_stop (EV_P_ W w)
1253	{	1486	{
1254	ev_unref (EV_A);	1487	ev_unref (EV_A);
1255	w->active = 0;	1488	w->active = 0;
1256	}	1489	}
1257		1490
1258	/*****************************************************************************/	1491	/*****************************************************************************/
1259		1492
1260	void	1493	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1494	ev_io_start (EV_P_ ev_io *w)
1262	{	1495	{
1263	int fd = w->fd;	1496	int fd = w->fd;
1264		1497
1265	if (ev_is_active (w))	1498	if (expect_false (ev_is_active (w)))
1266	return;	1499	return;
1267		1500
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1501	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1502
1270	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1506
1274	fd_change (EV_A_ fd);	1507	fd_change (EV_A_ fd);
1275	}	1508	}
1276		1509
1277	void	1510	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1511	ev_io_stop (EV_P_ ev_io *w)
1279	{	1512	{
1280	ev_clear_pending (EV_A_ (W)w);	1513	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1514	if (expect_false (!ev_is_active (w)))
1282	return;	1515	return;
		1516
		1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1518
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1520	ev_stop (EV_A_ (W)w);
1286		1521
1287	fd_change (EV_A_ w->fd);	1522	fd_change (EV_A_ w->fd);
1288	}	1523	}
1289		1524
1290	void	1525	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1526	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1527	{
1293	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1294	return;	1529	return;
1295		1530
1296	((WT)w)->at += mn_now;	1531	((WT)w)->at += mn_now;
1297		1532
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1534
1300	ev_start (EV_A_ (W)w, ++timercnt);	1535	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1537	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1538	upheap ((WT *)timers, timercnt - 1);
1304		1539
		1540	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1541	}
		1542
		1543	void
		1544	ev_timer_stop (EV_P_ ev_timer *w)
		1545	{
		1546	ev_clear_pending (EV_A_ (W)w);
		1547	if (expect_false (!ev_is_active (w)))
		1548	return;
		1549
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}
1307		1551
1308	void	1552	{
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1553	int active = ((W)w)->active;
1310	{
1311	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))
1313	return;
1314		1554
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1555	if (expect_true (--active < --timercnt))
1316
1317	if (((W)w)->active < timercnt--)
1318	{	1556	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1557	timers [active] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)timers, timercnt, active);
1321	}	1559	}
		1560	}
1322		1561
1323	((WT)w)->at = w->repeat;	1562	((WT)w)->at -= mn_now;
1324		1563
1325	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1326	}	1565	}
1327		1566
1328	void	1567	void
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1568	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1569	{
1331	if (ev_is_active (w))	1570	if (ev_is_active (w))
1332	{	1571	{
1333	if (w->repeat)	1572	if (w->repeat)
1334	{	1573	{
1335	((WT)w)->at = mn_now + w->repeat;	1574	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1576	}
1338	else	1577	else
1339	ev_timer_stop (EV_A_ w);	1578	ev_timer_stop (EV_A_ w);
1340	}	1579	}
1341	else if (w->repeat)	1580	else if (w->repeat)
		1581	{
		1582	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1583	ev_timer_start (EV_A_ w);
		1584	}
1343	}	1585	}
1344		1586
		1587	#if EV_PERIODIC_ENABLE
1345	void	1588	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1589	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1590	{
1348	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1349	return;	1592	return;
1350		1593
		1594	if (w->reschedule_cb)
		1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1596	else if (w->interval)
		1597	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1599	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1601	}
1356		1602
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1603	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1605	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1606	upheap ((WT *)periodics, periodiccnt - 1);
1361		1607
		1608	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1609	}
		1610
		1611	void
		1612	ev_periodic_stop (EV_P_ ev_periodic *w)
		1613	{
		1614	ev_clear_pending (EV_A_ (W)w);
		1615	if (expect_false (!ev_is_active (w)))
		1616	return;
		1617
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}
1364		1619
1365	void	1620	{
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1621	int active = ((W)w)->active;
1367	{
1368	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))
1370	return;
1371		1622
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1623	if (expect_true (--active < --periodiccnt))
1373
1374	if (((W)w)->active < periodiccnt--)
1375	{	1624	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1625	periodics [active] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1626	adjustheap ((WT *)periodics, periodiccnt, active);
1378	}	1627	}
		1628	}
1379		1629
1380	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1381	}	1631	}
1382		1632
1383	void	1633	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1634	ev_periodic_again (EV_P_ ev_periodic *w)
1385	{	1635	{
1386	if (ev_is_active (w))	1636	/* TODO: use adjustheap and recalculation */
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));
1391	idles [idlecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	idles [((W)w)->active - 1] = idles [--idlecnt];
1402	ev_stop (EV_A_ (W)w);	1637	ev_periodic_stop (EV_A_ w);
		1638	ev_periodic_start (EV_A_ w);
1403	}	1639	}
1404		1640	#endif
1405	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));
1413	prepares [preparecnt - 1] = w;
1414	}
1415
1416	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426
1427	void
1428	ev_check_start (EV_P_ struct ev_check *w)
1429	{
1430	if (ev_is_active (w))
1431	return;
1432
1433	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));
1435	checks [checkcnt - 1] = w;
1436	}
1437
1438	void
1439	ev_check_stop (EV_P_ struct ev_check *w)
1440	{
1441	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))
1443	return;
1444
1445	checks [((W)w)->active - 1] = checks [--checkcnt];
1446	ev_stop (EV_A_ (W)w);
1447	}
1448		1641
1449	#ifndef SA_RESTART	1642	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1643	# define SA_RESTART 0
1451	#endif	1644	#endif
1452		1645
1453	void	1646	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1647	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1648	{
1456	#if EV_MULTIPLICITY	1649	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1651	#endif
1459	if (ev_is_active (w))	1652	if (expect_false (ev_is_active (w)))
1460	return;	1653	return;
1461		1654
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1656
1464	ev_start (EV_A_ (W)w, 1);	1657	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1660
1468	if (!((WL)w)->next)	1661	if (!((WL)w)->next)
1469	{	1662	{
1470	#if WIN32	1663	#if _WIN32
1471	signal (w->signum, sighandler);	1664	signal (w->signum, sighandler);
1472	#else	1665	#else
1473	struct sigaction sa;	1666	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1667	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1668	sigfillset (&sa.sa_mask);
…		…
1478	#endif	1671	#endif
1479	}	1672	}
1480	}	1673	}
1481		1674
1482	void	1675	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1676	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1677	{
1485	ev_clear_pending (EV_A_ (W)w);	1678	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1679	if (expect_false (!ev_is_active (w)))
1487	return;	1680	return;
1488		1681
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1683	ev_stop (EV_A_ (W)w);
1491		1684
1492	if (!signals [w->signum - 1].head)	1685	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1686	signal (w->signum, SIG_DFL);
1494	}	1687	}
1495		1688
1496	void	1689	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1690	ev_child_start (EV_P_ ev_child *w)
1498	{	1691	{
1499	#if EV_MULTIPLICITY	1692	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1693	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1694	#endif
1502	if (ev_is_active (w))	1695	if (expect_false (ev_is_active (w)))
1503	return;	1696	return;
1504		1697
1505	ev_start (EV_A_ (W)w, 1);	1698	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507	}	1700	}
1508		1701
1509	void	1702	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1703	ev_child_stop (EV_P_ ev_child *w)
1511	{	1704	{
1512	ev_clear_pending (EV_A_ (W)w);	1705	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1706	if (expect_false (!ev_is_active (w)))
1514	return;	1707	return;
1515		1708
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1518	}	1711	}
1519		1712
		1713	#if EV_STAT_ENABLE
		1714
		1715	# ifdef _WIN32
		1716	# undef lstat
		1717	# define lstat(a,b) _stati64 (a,b)
		1718	# endif
		1719
		1720	#define DEF_STAT_INTERVAL 5.0074891
		1721	#define MIN_STAT_INTERVAL 0.1074891
		1722
		1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1724
		1725	#if EV_USE_INOTIFY
		1726	# define EV_INOTIFY_BUFSIZE 8192
		1727
		1728	static void noinline
		1729	infy_add (EV_P_ ev_stat *w)
		1730	{
		1731	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);
		1732
		1733	if (w->wd < 0)
		1734	{
		1735	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1736
		1737	/* monitor some parent directory for speedup hints */
		1738	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1739	{
		1740	char path [4096];
		1741	strcpy (path, w->path);
		1742
		1743	do
		1744	{
		1745	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1746	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1747
		1748	char *pend = strrchr (path, '/');
		1749
		1750	if (!pend)
		1751	break; /* whoops, no '/', complain to your admin */
		1752
		1753	*pend = 0;
		1754	w->wd = inotify_add_watch (fs_fd, path, mask);
		1755	}
		1756	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1757	}
		1758	}
		1759	else
		1760	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1761
		1762	if (w->wd >= 0)
		1763	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1764	}
		1765
		1766	static void noinline
		1767	infy_del (EV_P_ ev_stat *w)
		1768	{
		1769	int slot;
		1770	int wd = w->wd;
		1771
		1772	if (wd < 0)
		1773	return;
		1774
		1775	w->wd = -2;
		1776	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1777	wlist_del (&fs_hash [slot].head, (WL)w);
		1778
		1779	/* remove this watcher, if others are watching it, they will rearm */
		1780	inotify_rm_watch (fs_fd, wd);
		1781	}
		1782
		1783	static void noinline
		1784	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1785	{
		1786	if (slot < 0)
		1787	/* overflow, need to check for all hahs slots */
		1788	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1789	infy_wd (EV_A_ slot, wd, ev);
		1790	else
		1791	{
		1792	WL w_;
		1793
		1794	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1795	{
		1796	ev_stat *w = (ev_stat *)w_;
		1797	w_ = w_->next; /* lets us remove this watcher and all before it */
		1798
		1799	if (w->wd == wd || wd == -1)
		1800	{
		1801	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1802	{
		1803	w->wd = -1;
		1804	infy_add (EV_A_ w); /* re-add, no matter what */
		1805	}
		1806
		1807	stat_timer_cb (EV_A_ &w->timer, 0);
		1808	}
		1809	}
		1810	}
		1811	}
		1812
		1813	static void
		1814	infy_cb (EV_P_ ev_io *w, int revents)
		1815	{
		1816	char buf [EV_INOTIFY_BUFSIZE];
		1817	struct inotify_event *ev = (struct inotify_event *)buf;
		1818	int ofs;
		1819	int len = read (fs_fd, buf, sizeof (buf));
		1820
		1821	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1822	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1823	}
		1824
		1825	void inline_size
		1826	infy_init (EV_P)
		1827	{
		1828	if (fs_fd != -2)
		1829	return;
		1830
		1831	fs_fd = inotify_init ();
		1832
		1833	if (fs_fd >= 0)
		1834	{
		1835	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1836	ev_set_priority (&fs_w, EV_MAXPRI);
		1837	ev_io_start (EV_A_ &fs_w);
		1838	}
		1839	}
		1840
		1841	void inline_size
		1842	infy_fork (EV_P)
		1843	{
		1844	int slot;
		1845
		1846	if (fs_fd < 0)
		1847	return;
		1848
		1849	close (fs_fd);
		1850	fs_fd = inotify_init ();
		1851
		1852	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1853	{
		1854	WL w_ = fs_hash [slot].head;
		1855	fs_hash [slot].head = 0;
		1856
		1857	while (w_)
		1858	{
		1859	ev_stat *w = (ev_stat *)w_;
		1860	w_ = w_->next; /* lets us add this watcher */
		1861
		1862	w->wd = -1;
		1863
		1864	if (fs_fd >= 0)
		1865	infy_add (EV_A_ w); /* re-add, no matter what */
		1866	else
		1867	ev_timer_start (EV_A_ &w->timer);
		1868	}
		1869
		1870	}
		1871	}
		1872
		1873	#endif
		1874
		1875	void
		1876	ev_stat_stat (EV_P_ ev_stat *w)
		1877	{
		1878	if (lstat (w->path, &w->attr) < 0)
		1879	w->attr.st_nlink = 0;
		1880	else if (!w->attr.st_nlink)
		1881	w->attr.st_nlink = 1;
		1882	}
		1883
		1884	void noinline
		1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1886	{
		1887	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1888
		1889	/* we copy this here each the time so that */
		1890	/* prev has the old value when the callback gets invoked */
		1891	w->prev = w->attr;
		1892	ev_stat_stat (EV_A_ w);
		1893
		1894	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1895	if (
		1896	w->prev.st_dev != w->attr.st_dev
		1897	|| w->prev.st_ino != w->attr.st_ino
		1898	|| w->prev.st_mode != w->attr.st_mode
		1899	|| w->prev.st_nlink != w->attr.st_nlink
		1900	|| w->prev.st_uid != w->attr.st_uid
		1901	|| w->prev.st_gid != w->attr.st_gid
		1902	|| w->prev.st_rdev != w->attr.st_rdev
		1903	|| w->prev.st_size != w->attr.st_size
		1904	|| w->prev.st_atime != w->attr.st_atime
		1905	|| w->prev.st_mtime != w->attr.st_mtime
		1906	|| w->prev.st_ctime != w->attr.st_ctime
		1907	) {
		1908	#if EV_USE_INOTIFY
		1909	infy_del (EV_A_ w);
		1910	infy_add (EV_A_ w);
		1911	ev_stat_stat (EV_A_ w); /* avoid race... */
		1912	#endif
		1913
		1914	ev_feed_event (EV_A_ w, EV_STAT);
		1915	}
		1916	}
		1917
		1918	void
		1919	ev_stat_start (EV_P_ ev_stat *w)
		1920	{
		1921	if (expect_false (ev_is_active (w)))
		1922	return;
		1923
		1924	/* since we use memcmp, we need to clear any padding data etc. */
		1925	memset (&w->prev, 0, sizeof (ev_statdata));
		1926	memset (&w->attr, 0, sizeof (ev_statdata));
		1927
		1928	ev_stat_stat (EV_A_ w);
		1929
		1930	if (w->interval < MIN_STAT_INTERVAL)
		1931	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1932
		1933	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1934	ev_set_priority (&w->timer, ev_priority (w));
		1935
		1936	#if EV_USE_INOTIFY
		1937	infy_init (EV_A);
		1938
		1939	if (fs_fd >= 0)
		1940	infy_add (EV_A_ w);
		1941	else
		1942	#endif
		1943	ev_timer_start (EV_A_ &w->timer);
		1944
		1945	ev_start (EV_A_ (W)w, 1);
		1946	}
		1947
		1948	void
		1949	ev_stat_stop (EV_P_ ev_stat *w)
		1950	{
		1951	ev_clear_pending (EV_A_ (W)w);
		1952	if (expect_false (!ev_is_active (w)))
		1953	return;
		1954
		1955	#if EV_USE_INOTIFY
		1956	infy_del (EV_A_ w);
		1957	#endif
		1958	ev_timer_stop (EV_A_ &w->timer);
		1959
		1960	ev_stop (EV_A_ (W)w);
		1961	}
		1962	#endif
		1963
		1964	void
		1965	ev_idle_start (EV_P_ ev_idle *w)
		1966	{
		1967	if (expect_false (ev_is_active (w)))
		1968	return;
		1969
		1970	ev_start (EV_A_ (W)w, ++idlecnt);
		1971	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1972	idles [idlecnt - 1] = w;
		1973	}
		1974
		1975	void
		1976	ev_idle_stop (EV_P_ ev_idle *w)
		1977	{
		1978	ev_clear_pending (EV_A_ (W)w);
		1979	if (expect_false (!ev_is_active (w)))
		1980	return;
		1981
		1982	{
		1983	int active = ((W)w)->active;
		1984	idles [active - 1] = idles [--idlecnt];
		1985	((W)idles [active - 1])->active = active;
		1986	}
		1987
		1988	ev_stop (EV_A_ (W)w);
		1989	}
		1990
		1991	void
		1992	ev_prepare_start (EV_P_ ev_prepare *w)
		1993	{
		1994	if (expect_false (ev_is_active (w)))
		1995	return;
		1996
		1997	ev_start (EV_A_ (W)w, ++preparecnt);
		1998	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1999	prepares [preparecnt - 1] = w;
		2000	}
		2001
		2002	void
		2003	ev_prepare_stop (EV_P_ ev_prepare *w)
		2004	{
		2005	ev_clear_pending (EV_A_ (W)w);
		2006	if (expect_false (!ev_is_active (w)))
		2007	return;
		2008
		2009	{
		2010	int active = ((W)w)->active;
		2011	prepares [active - 1] = prepares [--preparecnt];
		2012	((W)prepares [active - 1])->active = active;
		2013	}
		2014
		2015	ev_stop (EV_A_ (W)w);
		2016	}
		2017
		2018	void
		2019	ev_check_start (EV_P_ ev_check *w)
		2020	{
		2021	if (expect_false (ev_is_active (w)))
		2022	return;
		2023
		2024	ev_start (EV_A_ (W)w, ++checkcnt);
		2025	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2026	checks [checkcnt - 1] = w;
		2027	}
		2028
		2029	void
		2030	ev_check_stop (EV_P_ ev_check *w)
		2031	{
		2032	ev_clear_pending (EV_A_ (W)w);
		2033	if (expect_false (!ev_is_active (w)))
		2034	return;
		2035
		2036	{
		2037	int active = ((W)w)->active;
		2038	checks [active - 1] = checks [--checkcnt];
		2039	((W)checks [active - 1])->active = active;
		2040	}
		2041
		2042	ev_stop (EV_A_ (W)w);
		2043	}
		2044
		2045	#if EV_EMBED_ENABLE
		2046	void noinline
		2047	ev_embed_sweep (EV_P_ ev_embed *w)
		2048	{
		2049	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2050	}
		2051
		2052	static void
		2053	embed_cb (EV_P_ ev_io *io, int revents)
		2054	{
		2055	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2056
		2057	if (ev_cb (w))
		2058	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2059	else
		2060	ev_embed_sweep (loop, w);
		2061	}
		2062
		2063	void
		2064	ev_embed_start (EV_P_ ev_embed *w)
		2065	{
		2066	if (expect_false (ev_is_active (w)))
		2067	return;
		2068
		2069	{
		2070	struct ev_loop *loop = w->loop;
		2071	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2072	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2073	}
		2074
		2075	ev_set_priority (&w->io, ev_priority (w));
		2076	ev_io_start (EV_A_ &w->io);
		2077
		2078	ev_start (EV_A_ (W)w, 1);
		2079	}
		2080
		2081	void
		2082	ev_embed_stop (EV_P_ ev_embed *w)
		2083	{
		2084	ev_clear_pending (EV_A_ (W)w);
		2085	if (expect_false (!ev_is_active (w)))
		2086	return;
		2087
		2088	ev_io_stop (EV_A_ &w->io);
		2089
		2090	ev_stop (EV_A_ (W)w);
		2091	}
		2092	#endif
		2093
		2094	#if EV_FORK_ENABLE
		2095	void
		2096	ev_fork_start (EV_P_ ev_fork *w)
		2097	{
		2098	if (expect_false (ev_is_active (w)))
		2099	return;
		2100
		2101	ev_start (EV_A_ (W)w, ++forkcnt);
		2102	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2103	forks [forkcnt - 1] = w;
		2104	}
		2105
		2106	void
		2107	ev_fork_stop (EV_P_ ev_fork *w)
		2108	{
		2109	ev_clear_pending (EV_A_ (W)w);
		2110	if (expect_false (!ev_is_active (w)))
		2111	return;
		2112
		2113	{
		2114	int active = ((W)w)->active;
		2115	forks [active - 1] = forks [--forkcnt];
		2116	((W)forks [active - 1])->active = active;
		2117	}
		2118
		2119	ev_stop (EV_A_ (W)w);
		2120	}
		2121	#endif
		2122
1520	/*****************************************************************************/	2123	/*****************************************************************************/
1521		2124
1522	struct ev_once	2125	struct ev_once
1523	{	2126	{
1524	struct ev_io io;	2127	ev_io io;
1525	struct ev_timer to;	2128	ev_timer to;
1526	void (*cb)(int revents, void *arg);	2129	void (*cb)(int revents, void *arg);
1527	void *arg;	2130	void *arg;
1528	};	2131	};
1529		2132
1530	static void	2133	static void
…		…
1539		2142
1540	cb (revents, arg);	2143	cb (revents, arg);
1541	}	2144	}
1542		2145
1543	static void	2146	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	2147	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	2148	{
1546	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2149	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547	}	2150	}
1548		2151
1549	static void	2152	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2153	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	2154	{
1552	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2155	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553	}	2156	}
1554		2157
1555	void	2158	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2159	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557	{	2160	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2161	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559		2162
1560	if (!once)	2163	if (expect_false (!once))
		2164	{
1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2165	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562	else	2166	return;
1563	{	2167	}
		2168
1564	once->cb = cb;	2169	once->cb = cb;
1565	once->arg = arg;	2170	once->arg = arg;
1566		2171
1567	ev_watcher_init (&once->io, once_cb_io);	2172	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	2173	if (fd >= 0)
1569	{	2174	{
1570	ev_io_set (&once->io, fd, events);	2175	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	2176	ev_io_start (EV_A_ &once->io);
1572	}	2177	}
1573		2178
1574	ev_watcher_init (&once->to, once_cb_to);	2179	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	2180	if (timeout >= 0.)
1576	{	2181	{
1577	ev_timer_set (&once->to, timeout, 0.);	2182	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	2183	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	2184	}
1581	}	2185	}
1582		2186
		2187	#ifdef __cplusplus
		2188	}
		2189	#endif
		2190

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