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Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.165 by root, Fri Dec 7 18:09:38 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
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# 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
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	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
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		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
91	/**/	219	/**/
92		220
93	#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) */
94	#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) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#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 */
97
98	#include "ev.h"
99		224
100	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
101	# 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
102	# 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
103	#else	235	#else
104	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
105	# define inline static	238	# define inline_size static
		239	# define noinline
106	#endif	240	#endif
107		241
108	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
110		244
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
114	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
117		254
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
120	/*****************************************************************************/	261	/*****************************************************************************/
121		262
		263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
122	typedef struct	313	typedef struct
123	{	314	{
124	struct ev_watcher_list *head;	315	WL head;
125	unsigned char events;	316	unsigned char events;
126	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
127	} ANFD;	321	} ANFD;
128		322
129	typedef struct	323	typedef struct
130	{	324	{
131	W w;	325	W w;
132	int events;	326	int events;
133	} ANPENDING;	327	} ANPENDING;
134		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
135	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
136		337
137	struct ev_loop	338	struct ev_loop
138	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	343	#include "ev_vars.h"
141	};
142	# undef VAR	344	#undef VAR
		345	};
143	# 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;
144		350
145	#else	351	#else
146		352
		353	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	355	#include "ev_vars.h"
149	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
150		359
151	#endif	360	#endif
152		361
153	/*****************************************************************************/	362	/*****************************************************************************/
154		363
155	inline ev_tstamp	364	ev_tstamp
156	ev_time (void)	365	ev_time (void)
157	{	366	{
158	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
159	struct timespec ts;	368	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	375	#endif
167	}	376	}
168		377
169	inline ev_tstamp	378	ev_tstamp inline_size
170	get_clock (void)	379	get_clock (void)
171	{	380	{
172	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
174	{	383	{
…		…
179	#endif	388	#endif
180		389
181	return ev_time ();	390	return ev_time ();
182	}	391	}
183		392
		393	#if EV_MULTIPLICITY
184	ev_tstamp	394	ev_tstamp
185	ev_now (EV_P)	395	ev_now (EV_P)
186	{	396	{
187	return rt_now;	397	return ev_rt_now;
188	}	398	}
		399	#endif
189		400
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
191		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
		428
192	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
194	{ \	431	{ \
195	int newcnt = cur; \	432	int ocur_ = (cur); \
196	do \	433	(base) = (type *)array_realloc \
197	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
198	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
199	} \	436	}
200	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201	\	441	{ \
202	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
203	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		450
207	/*****************************************************************************/	451	/*****************************************************************************/
208		452
209	static void	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
		455	{
		456	W w_ = (W)w;
		457
		458	if (expect_false (w_->pending))
		459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
		463
		464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
210	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
211	{	483	{
212	while (count--)	484	while (count--)
213	{	485	{
214	base->head = 0;	486	base->head = 0;
…		…
217		489
218	++base;	490	++base;
219	}	491	}
220	}	492	}
221		493
222	static void	494	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
248	{	496	{
249	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	498	ev_io *w;
251		499
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	501	{
254	int ev = w->events & events;	502	int ev = w->events & revents;
255		503
256	if (ev)	504	if (ev)
257	event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
258	}	506	}
259	}	507	}
260		508
261	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
262		514
263	static void	515	void inline_size
264	fd_reify (EV_P)	516	fd_reify (EV_P)
265	{	517	{
266	int i;	518	int i;
267		519
268	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
269	{	521	{
270	int fd = fdchanges [i];	522	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	524	ev_io *w;
273		525
274	int events = 0;	526	int events = 0;
275		527
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	529	events |= w->events;
278		530
		531	#if EV_SELECT_IS_WINSOCKET
		532	if (events)
		533	{
		534	unsigned long argp;
		535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		537	}
		538	#endif
		539
279	anfd->reify = 0;	540	anfd->reify = 0;
280		541
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	543	anfd->events = events;
285	}
286	}	544	}
287		545
288	fdchangecnt = 0;	546	fdchangecnt = 0;
289	}	547	}
290		548
291	static void	549	void inline_size
292	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
293	{	551	{
294	if (anfds [fd].reify || fdchangecnt < 0)	552	if (expect_false (anfds [fd].reify))
295	return;	553	return;
296		554
297	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
298		556
299	++fdchangecnt;	557	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
302	}	560	}
303		561
304	static void	562	void inline_speed
305	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
306	{	564	{
307	struct ev_io *w;	565	ev_io *w;
308		566
309	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
310	{	568	{
311	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	571	}
		572	}
		573
		574	int inline_size
		575	fd_valid (int fd)
		576	{
		577	#ifdef _WIN32
		578	return _get_osfhandle (fd) != -1;
		579	#else
		580	return fcntl (fd, F_GETFD) != -1;
		581	#endif
314	}	582	}
315		583
316	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
317	static void	585	static void noinline
318	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
319	{	587	{
320	int fd;	588	int fd;
321		589
322	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	591	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
326	}	594	}
327		595
328	/* called on ENOMEM in select/poll to kill some fds and retry */	596	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	597	static void noinline
330	fd_enomem (EV_P)	598	fd_enomem (EV_P)
331	{	599	{
332	int fd = anfdmax;	600	int fd;
333		601
334	while (fd--)	602	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	603	if (anfds [fd].events)
336	{	604	{
337	close (fd);
338	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
339	return;	606	return;
340	}	607	}
341	}	608	}
342		609
343	/* susually called after fork if method needs to re-arm all fds from scratch */	610	/* usually called after fork if backend needs to re-arm all fds from scratch */
344	static void	611	static void noinline
345	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
346	{	613	{
347	int fd;	614	int fd;
348		615
349	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	617	if (anfds [fd].events)
352	{	618	{
353	anfds [fd].events = 0;	619	anfds [fd].events = 0;
354	fd_change (fd);	620	fd_change (EV_A_ fd);
355	}	621	}
356	}	622	}
357		623
358	/*****************************************************************************/	624	/*****************************************************************************/
359		625
360	static void	626	void inline_speed
361	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
362	{	628	{
363	WT w = heap [k];	629	WT w = heap [k];
364		630
365	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
366	{	632	{
367	heap [k] = heap [k >> 1];	633	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	634	((W)heap [k])->active = k + 1;
369	k >>= 1;	635	k >>= 1;
370	}	636	}
371		637
372	heap [k] = w;	638	heap [k] = w;
373	heap [k]->active = k + 1;	639	((W)heap [k])->active = k + 1;
374		640
375	}	641	}
376		642
377	static void	643	void inline_speed
378	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
379	{	645	{
380	WT w = heap [k];	646	WT w = heap [k];
381		647
382	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
388		654
389	if (w->at <= heap [j]->at)	655	if (w->at <= heap [j]->at)
390	break;	656	break;
391		657
392	heap [k] = heap [j];	658	heap [k] = heap [j];
393	heap [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
394	k = j;	660	k = j;
395	}	661	}
396		662
397	heap [k] = w;	663	heap [k] = w;
398	heap [k]->active = k + 1;	664	((W)heap [k])->active = k + 1;
		665	}
		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
399	}	672	}
400		673
401	/*****************************************************************************/	674	/*****************************************************************************/
402		675
403	typedef struct	676	typedef struct
404	{	677	{
405	struct ev_watcher_list *head;	678	WL head;
406	sig_atomic_t volatile gotsig;	679	sig_atomic_t volatile gotsig;
407	} ANSIG;	680	} ANSIG;
408		681
409	static ANSIG *signals;	682	static ANSIG *signals;
410	static int signalmax;	683	static int signalmax;
411		684
412	static int sigpipe [2];	685	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
		687	static ev_io sigev;
414		688
415	static void	689	void inline_size
416	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
417	{	691	{
418	while (count--)	692	while (count--)
419	{	693	{
420	base->head = 0;	694	base->head = 0;
…		…
425	}	699	}
426		700
427	static void	701	static void
428	sighandler (int signum)	702	sighandler (int signum)
429	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
430	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
431		709
432	if (!gotsig)	710	if (!gotsig)
433	{	711	{
434	int old_errno = errno;	712	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	715	errno = old_errno;
438	}	716	}
439	}	717	}
440		718
		719	void noinline
		720	ev_feed_signal_event (EV_P_ int signum)
		721	{
		722	WL w;
		723
		724	#if EV_MULTIPLICITY
		725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		726	#endif
		727
		728	--signum;
		729
		730	if (signum < 0 || signum >= signalmax)
		731	return;
		732
		733	signals [signum].gotsig = 0;
		734
		735	for (w = signals [signum].head; w; w = w->next)
		736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		737	}
		738
441	static void	739	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
443	{	741	{
444	struct ev_watcher_list *w;
445	int signum;	742	int signum;
446		743
447	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	745	gotsig = 0;
449		746
450	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
452	{	749	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;
454
455	for (w = signals [signum].head; w; w = w->next)
456	event (EV_A_ (W)w, EV_SIGNAL);
457	}
458	}	750	}
459		751
460	static void	752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
461	siginit (EV_P)	765	siginit (EV_P)
462	{	766	{
463	#ifndef WIN32	767	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		769
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	773	}
476		774
477	/*****************************************************************************/	775	/*****************************************************************************/
478		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
479	#ifndef WIN32	779	#ifndef _WIN32
		780
		781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
		790	{
		791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		792	w->rpid = pid;
		793	w->rstatus = status;
		794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		795	}
		796	}
480		797
481	#ifndef WCONTINUED	798	#ifndef WCONTINUED
482	# define WCONTINUED 0	799	# define WCONTINUED 0
483	#endif	800	#endif
484		801
485	static void	802	static void
486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
487	{
488	struct ev_child *w;
489
490	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
491	if (w->pid == pid || !w->pid)
492	{
493	w->priority = sw->priority; /* need to do it *now* */
494	w->rpid = pid;
495	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);
497	}
498	}
499
500	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
502	{	804	{
503	int pid, status;	805	int pid, status;
504		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
507	/* make sure we are called again until all childs have been reaped */	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
508	event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		817
510	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512	}
513	}	821	}
514		822
515	#endif	823	#endif
516		824
517	/*****************************************************************************/	825	/*****************************************************************************/
518		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
519	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
520	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
521	#endif	832	#endif
522	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	834	# include "ev_epoll.c"
524	#endif	835	#endif
525	#if EV_USEV_POLL	836	#if EV_USE_POLL
526	# include "ev_poll.c"	837	# include "ev_poll.c"
527	#endif	838	#endif
528	#if EV_USE_SELECT	839	#if EV_USE_SELECT
529	# include "ev_select.c"	840	# include "ev_select.c"
530	#endif	841	#endif
…		…
540	{	851	{
541	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
542	}	853	}
543		854
544	/* return true if we are running with elevated privileges and should ignore env variables */	855	/* return true if we are running with elevated privileges and should ignore env variables */
545	static int	856	int inline_size
546	enable_secure (void)	857	enable_secure (void)
547	{	858	{
548	#ifdef WIN32	859	#ifdef _WIN32
549	return 0;	860	return 0;
550	#else	861	#else
551	return getuid () != geteuid ()	862	return getuid () != geteuid ()
552	|| getgid () != getegid ();	863	|| getgid () != getegid ();
553	#endif	864	#endif
554	}	865	}
555		866
556	int	867	unsigned int
557	ev_method (EV_P)	868	ev_supported_backends (void)
558	{	869	{
559	return method;	870	unsigned int flags = 0;
560	}
561		871
562	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563	loop_init (EV_P_ int methods)	873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
564	{	883	{
565	if (!method)	884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
566	{	923	{
567	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
568	{	925	{
569	struct timespec ts;	926	struct timespec ts;
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	928	have_monotonic = 1;
572	}	929	}
573	#endif	930	#endif
574		931
575	rt_now = ev_time ();	932	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	933	mn_now = get_clock ();
577	now_floor = mn_now;	934	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
579		936
580	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
		942
		943	if (!(flags & EVFLAG_NOENV)
		944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else
584	methods = EVMETHOD_ANY;
585		947
586	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
		953	#if EV_USE_INOTIFY
		954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		959	#endif
587	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589	#endif	962	#endif
590	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592	#endif	965	#endif
593	#if EV_USEV_POLL	966	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595	#endif	968	#endif
596	#if EV_USE_SELECT	969	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598	#endif	971	#endif
599	}
600	}
601		972
602	void	973	ev_init (&sigev, sigcb);
		974	ev_set_priority (&sigev, EV_MAXPRI);
		975	}
		976	}
		977
		978	static void noinline
603	loop_destroy (EV_P)	979	loop_destroy (EV_P)
604	{	980	{
		981	int i;
		982
		983	#if EV_USE_INOTIFY
		984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		993	#endif
605	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607	#endif	996	#endif
608	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610	#endif	999	#endif
611	#if EV_USEV_POLL	1000	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613	#endif	1002	#endif
614	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616	#endif	1005	#endif
617		1006
618	method = 0;	1007	for (i = NUMPRI; i--; )
619	/*TODO*/	1008	{
620	}	1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
621		1014
622	void	1015	/* have to use the microsoft-never-gets-it-right macro */
		1016	array_free (fdchange, EMPTY);
		1017	array_free (timer, EMPTY);
		1018	#if EV_PERIODIC_ENABLE
		1019	array_free (periodic, EMPTY);
		1020	#endif
		1021	array_free (prepare, EMPTY);
		1022	array_free (check, EMPTY);
		1023
		1024	backend = 0;
		1025	}
		1026
		1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
623	loop_fork (EV_P)	1030	loop_fork (EV_P)
624	{	1031	{
625	/*TODO*/	1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
626	#if EV_USE_EPOLL	1038	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628	#endif	1040	#endif
629	#if EV_USE_KQUEUE	1041	#if EV_USE_INOTIFY
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1042	infy_fork (EV_A);
631	#endif	1043	#endif
		1044
		1045	if (ev_is_active (&sigev))
		1046	{
		1047	/* default loop */
		1048
		1049	ev_ref (EV_A);
		1050	ev_io_stop (EV_A_ &sigev);
		1051	close (sigpipe [0]);
		1052	close (sigpipe [1]);
		1053
		1054	while (pipe (sigpipe))
		1055	syserr ("(libev) error creating pipe");
		1056
		1057	siginit (EV_A);
		1058	}
		1059
		1060	postfork = 0;
632	}	1061	}
633		1062
634	#if EV_MULTIPLICITY	1063	#if EV_MULTIPLICITY
635	struct ev_loop *	1064	struct ev_loop *
636	ev_loop_new (int methods)	1065	ev_loop_new (unsigned int flags)
637	{	1066	{
638	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639		1068
		1069	memset (loop, 0, sizeof (struct ev_loop));
		1070
640	loop_init (EV_A_ methods);	1071	loop_init (EV_A_ flags);
641		1072
642	if (ev_methods (EV_A))	1073	if (ev_backend (EV_A))
643	return loop;	1074	return loop;
644		1075
645	return 0;	1076	return 0;
646	}	1077	}
647		1078
648	void	1079	void
649	ev_loop_destroy (EV_P)	1080	ev_loop_destroy (EV_P)
650	{	1081	{
651	loop_destroy (EV_A);	1082	loop_destroy (EV_A);
652	free (loop);	1083	ev_free (loop);
653	}	1084	}
654		1085
655	void	1086	void
656	ev_loop_fork (EV_P)	1087	ev_loop_fork (EV_P)
657	{	1088	{
658	loop_fork (EV_A);	1089	postfork = 1;
659	}	1090	}
660		1091
661	#endif	1092	#endif
662		1093
663	#if EV_MULTIPLICITY	1094	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
668	#else	1097	#else
669	static int default_loop;
670
671	int	1098	int
		1099	ev_default_loop (unsigned int flags)
672	#endif	1100	#endif
673	ev_default_loop (int methods)
674	{	1101	{
675	if (sigpipe [0] == sigpipe [1])	1102	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	1103	if (pipe (sigpipe))
677	return 0;	1104	return 0;
678		1105
679	if (!default_loop)	1106	if (!ev_default_loop_ptr)
680	{	1107	{
681	#if EV_MULTIPLICITY	1108	#if EV_MULTIPLICITY
682	struct ev_loop *loop = default_loop = &default_loop_struct;	1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683	#else	1110	#else
684	default_loop = 1;	1111	ev_default_loop_ptr = 1;
685	#endif	1112	#endif
686		1113
687	loop_init (EV_A_ methods);	1114	loop_init (EV_A_ flags);
688		1115
689	if (ev_method (EV_A))	1116	if (ev_backend (EV_A))
690	{	1117	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	1118	siginit (EV_A);
694		1119
695	#ifndef WIN32	1120	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	1123	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	1125	#endif
701	}	1126	}
702	else	1127	else
703	default_loop = 0;	1128	ev_default_loop_ptr = 0;
704	}	1129	}
705		1130
706	return default_loop;	1131	return ev_default_loop_ptr;
707	}	1132	}
708		1133
709	void	1134	void
710	ev_default_destroy (void)	1135	ev_default_destroy (void)
711	{	1136	{
712	#if EV_MULTIPLICITY	1137	#if EV_MULTIPLICITY
713	struct ev_loop *loop = default_loop;	1138	struct ev_loop *loop = ev_default_loop_ptr;
714	#endif	1139	#endif
715		1140
		1141	#ifndef _WIN32
716	ev_ref (EV_A); /* child watcher */	1142	ev_ref (EV_A); /* child watcher */
717	ev_signal_stop (EV_A_ &childev);	1143	ev_signal_stop (EV_A_ &childev);
		1144	#endif
718		1145
719	ev_ref (EV_A); /* signal watcher */	1146	ev_ref (EV_A); /* signal watcher */
720	ev_io_stop (EV_A_ &sigev);	1147	ev_io_stop (EV_A_ &sigev);
721		1148
722	close (sigpipe [0]); sigpipe [0] = 0;	1149	close (sigpipe [0]); sigpipe [0] = 0;
…		…
724		1151
725	loop_destroy (EV_A);	1152	loop_destroy (EV_A);
726	}	1153	}
727		1154
728	void	1155	void
729	ev_default_fork (EV_P)	1156	ev_default_fork (void)
730	{	1157	{
731	loop_fork (EV_A);	1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
732		1161
733	ev_io_stop (EV_A_ &sigev);	1162	if (backend)
734	close (sigpipe [0]);	1163	postfork = 1;
735	close (sigpipe [1]);
736	pipe (sigpipe);
737
738	ev_ref (EV_A); /* signal watcher */
739	siginit (EV_A);
740	}	1164	}
741		1165
742	/*****************************************************************************/	1166	/*****************************************************************************/
743		1167
744	static void	1168	void inline_speed
745	call_pending (EV_P)	1169	call_pending (EV_P)
746	{	1170	{
747	int pri;	1171	int pri;
748		1172
749	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
750	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
751	{	1175	{
752	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753		1177
754	if (p->w)	1178	if (expect_true (p->w))
755	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
756	p->w->pending = 0;	1182	p->w->pending = 0;
757	p->w->cb (EV_A_ p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
758	}	1184	}
759	}	1185	}
760	}	1186	}
761		1187
762	static void	1188	void inline_size
763	timers_reify (EV_P)	1189	timers_reify (EV_P)
764	{	1190	{
765	while (timercnt && timers [0]->at <= mn_now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
766	{	1192	{
767	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
		1194
		1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
768		1196
769	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
770	if (w->repeat)	1198	if (w->repeat)
771	{	1199	{
772	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1201
773	w->at = mn_now + w->repeat;	1202	((WT)w)->at += w->repeat;
		1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
774	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
775	}	1207	}
776	else	1208	else
777	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778		1210
779	event (EV_A_ (W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780	}	1212	}
781	}	1213	}
782		1214
783	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
784	periodics_reify (EV_P)	1217	periodics_reify (EV_P)
785	{	1218	{
786	while (periodiccnt && periodics [0]->at <= rt_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787	{	1220	{
788	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
		1222
		1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
789		1224
790	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
791	if (w->interval)	1226	if (w->reschedule_cb)
792	{	1227	{
		1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1230	downheap ((WT *)periodics, periodiccnt, 0);
		1231	}
		1232	else if (w->interval)
		1233	{
793	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
794	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
795	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
796	}	1237	}
797	else	1238	else
798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799		1240
800	event (EV_A_ (W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801	}	1242	}
802	}	1243	}
803		1244
804	static void	1245	static void noinline
805	periodics_reschedule (EV_P)	1246	periodics_reschedule (EV_P)
806	{	1247	{
807	int i;	1248	int i;
808		1249
809	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
810	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
811	{	1252	{
812	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
813		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814	if (w->interval)	1257	else if (w->interval)
		1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1259	}
		1260
		1261	/* now rebuild the heap */
		1262	for (i = periodiccnt >> 1; i--; )
		1263	downheap ((WT *)periodics, periodiccnt, i);
		1264	}
		1265	#endif
		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
815	{	1276	{
816	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
817		1279
818	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
819	{	1281	{
820	ev_periodic_stop (EV_A_ w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
821	ev_periodic_start (EV_A_ w);	1283	break;
822
823	i = 0; /* restart loop, inefficient, but time jumps should be rare */
824	}	1284	}
825	}	1285	}
826	}	1286	}
827	}	1287	}
		1288	#endif
828		1289
829	inline int	1290	int inline_size
830	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
831	{	1292	{
832	mn_now = get_clock ();	1293	mn_now = get_clock ();
833		1294
834	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
835	{	1296	{
836	rt_now = rtmn_diff + mn_now;	1297	ev_rt_now = rtmn_diff + mn_now;
837	return 0;	1298	return 0;
838	}	1299	}
839	else	1300	else
840	{	1301	{
841	now_floor = mn_now;	1302	now_floor = mn_now;
842	rt_now = ev_time ();	1303	ev_rt_now = ev_time ();
843	return 1;	1304	return 1;
844	}	1305	}
845	}	1306	}
846		1307
847	static void	1308	void inline_size
848	time_update (EV_P)	1309	time_update (EV_P)
849	{	1310	{
850	int i;	1311	int i;
851		1312
852	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
…		…
854	{	1315	{
855	if (time_update_monotonic (EV_A))	1316	if (time_update_monotonic (EV_A))
856	{	1317	{
857	ev_tstamp odiff = rtmn_diff;	1318	ev_tstamp odiff = rtmn_diff;
858		1319
859	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
860	{	1329	{
861	rtmn_diff = rt_now - mn_now;	1330	rtmn_diff = ev_rt_now - mn_now;
862		1331
863	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864	return; /* all is well */	1333	return; /* all is well */
865		1334
866	rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
867	mn_now = get_clock ();	1336	mn_now = get_clock ();
868	now_floor = mn_now;	1337	now_floor = mn_now;
869	}	1338	}
870		1339
		1340	# if EV_PERIODIC_ENABLE
871	periodics_reschedule (EV_A);	1341	periodics_reschedule (EV_A);
		1342	# endif
872	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
874	}	1345	}
875	}	1346	}
876	else	1347	else
877	#endif	1348	#endif
878	{	1349	{
879	rt_now = ev_time ();	1350	ev_rt_now = ev_time ();
880		1351
881	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
882	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
883	periodics_reschedule (EV_A);	1355	periodics_reschedule (EV_A);
		1356	#endif
884		1357
885	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
886	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
887	timers [i]->at += rt_now - mn_now;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
888	}	1361	}
889		1362
890	mn_now = rt_now;	1363	mn_now = ev_rt_now;
891	}	1364	}
892	}	1365	}
893		1366
894	void	1367	void
895	ev_ref (EV_P)	1368	ev_ref (EV_P)
…		…
906	static int loop_done;	1379	static int loop_done;
907		1380
908	void	1381	void
909	ev_loop (EV_P_ int flags)	1382	ev_loop (EV_P_ int flags)
910	{	1383	{
911	double block;
912	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
913		1389
914	do	1390	do
915	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
916	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
917	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
918	{	1413	{
919	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920	call_pending (EV_A);	1415	call_pending (EV_A);
921	}	1416	}
922		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
		1421	/* we might have forked, so reify kernel state if necessary */
		1422	if (expect_false (postfork))
		1423	loop_fork (EV_A);
		1424
923	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
924	fd_reify (EV_A);	1426	fd_reify (EV_A);
925		1427
926	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
927		1431
928	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
929	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
		1434	else
		1435	{
		1436	/* update time to cancel out callback processing overhead */
930	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
931	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
932	time_update_monotonic (EV_A);	1439	time_update_monotonic (EV_A);
933	else	1440	else
934	#endif	1441	#endif
935	{	1442	{
936	rt_now = ev_time ();	1443	ev_rt_now = ev_time ();
937	mn_now = rt_now;	1444	mn_now = ev_rt_now;
938	}	1445	}
939		1446
940	if (flags & EVLOOP_NONBLOCK || idlecnt)
941	block = 0.;
942	else
943	{
944	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
945		1448
946	if (timercnt)	1449	if (timercnt)
947	{	1450	{
948	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
949	if (block > to) block = to;	1452	if (block > to) block = to;
950	}	1453	}
951		1454
		1455	#if EV_PERIODIC_ENABLE
952	if (periodiccnt)	1456	if (periodiccnt)
953	{	1457	{
954	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
955	if (block > to) block = to;	1459	if (block > to) block = to;
956	}	1460	}
		1461	#endif
957		1462
958	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
959	}	1464	}
960		1465
		1466	++loop_count;
961	method_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
		1468	}
962		1469
963	/* update rt_now, do magic */	1470	/* update ev_rt_now, do magic */
964	time_update (EV_A);	1471	time_update (EV_A);
965		1472
966	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
967	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
968	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
969		1478
		1479	#if EV_IDLE_ENABLE
970	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
971	if (!pendingcnt)	1481	idle_reify (EV_A);
972	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
973		1483
974	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
975	if (checkcnt)	1485	if (expect_false (checkcnt))
976	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
977		1487
978	call_pending (EV_A);	1488	call_pending (EV_A);
		1489
979	}	1490	}
980	while (activecnt && !loop_done);	1491	while (expect_true (activecnt && !loop_done));
981		1492
982	if (loop_done != 2)	1493	if (loop_done == EVUNLOOP_ONE)
983	loop_done = 0;	1494	loop_done = EVUNLOOP_CANCEL;
984	}	1495	}
985		1496
986	void	1497	void
987	ev_unloop (EV_P_ int how)	1498	ev_unloop (EV_P_ int how)
988	{	1499	{
989	loop_done = how;	1500	loop_done = how;
990	}	1501	}
991		1502
992	/*****************************************************************************/	1503	/*****************************************************************************/
993		1504
994	inline void	1505	void inline_size
995	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
996	{	1507	{
997	elem->next = *head;	1508	elem->next = *head;
998	*head = elem;	1509	*head = elem;
999	}	1510	}
1000		1511
1001	inline void	1512	void inline_size
1002	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
1003	{	1514	{
1004	while (*head)	1515	while (*head)
1005	{	1516	{
1006	if (*head == elem)	1517	if (*head == elem)
…		…
1011		1522
1012	head = &(*head)->next;	1523	head = &(*head)->next;
1013	}	1524	}
1014	}	1525	}
1015		1526
1016	inline void	1527	void inline_speed
1017	ev_clear_pending (EV_P_ W w)	1528	ev_clear_pending (EV_P_ W w)
1018	{	1529	{
1019	if (w->pending)	1530	if (w->pending)
1020	{	1531	{
1021	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1022	w->pending = 0;	1533	w->pending = 0;
1023	}	1534	}
1024	}	1535	}
1025		1536
1026	inline void	1537	void inline_size
		1538	pri_adjust (EV_P_ W w)
		1539	{
		1540	int pri = w->priority;
		1541	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1542	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1543	w->priority = pri;
		1544	}
		1545
		1546	void inline_speed
1027	ev_start (EV_P_ W w, int active)	1547	ev_start (EV_P_ W w, int active)
1028	{	1548	{
1029	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1549	pri_adjust (EV_A_ w);
1030	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1031
1032	w->active = active;	1550	w->active = active;
1033	ev_ref (EV_A);	1551	ev_ref (EV_A);
1034	}	1552	}
1035		1553
1036	inline void	1554	void inline_size
1037	ev_stop (EV_P_ W w)	1555	ev_stop (EV_P_ W w)
1038	{	1556	{
1039	ev_unref (EV_A);	1557	ev_unref (EV_A);
1040	w->active = 0;	1558	w->active = 0;
1041	}	1559	}
1042		1560
1043	/*****************************************************************************/	1561	/*****************************************************************************/
1044		1562
1045	void	1563	void
1046	ev_io_start (EV_P_ struct ev_io *w)	1564	ev_io_start (EV_P_ ev_io *w)
1047	{	1565	{
1048	int fd = w->fd;	1566	int fd = w->fd;
1049		1567
1050	if (ev_is_active (w))	1568	if (expect_false (ev_is_active (w)))
1051	return;	1569	return;
1052		1570
1053	assert (("ev_io_start called with negative fd", fd >= 0));	1571	assert (("ev_io_start called with negative fd", fd >= 0));
1054		1572
1055	ev_start (EV_A_ (W)w, 1);	1573	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1574	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1575	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1058		1576
1059	fd_change (EV_A_ fd);	1577	fd_change (EV_A_ fd);
1060	}	1578	}
1061		1579
1062	void	1580	void
1063	ev_io_stop (EV_P_ struct ev_io *w)	1581	ev_io_stop (EV_P_ ev_io *w)
1064	{	1582	{
1065	ev_clear_pending (EV_A_ (W)w);	1583	ev_clear_pending (EV_A_ (W)w);
1066	if (!ev_is_active (w))	1584	if (expect_false (!ev_is_active (w)))
1067	return;	1585	return;
		1586
		1587	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1068		1588
1069	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1589	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1070	ev_stop (EV_A_ (W)w);	1590	ev_stop (EV_A_ (W)w);
1071		1591
1072	fd_change (EV_A_ w->fd);	1592	fd_change (EV_A_ w->fd);
1073	}	1593	}
1074		1594
1075	void	1595	void
1076	ev_timer_start (EV_P_ struct ev_timer *w)	1596	ev_timer_start (EV_P_ ev_timer *w)
1077	{	1597	{
1078	if (ev_is_active (w))	1598	if (expect_false (ev_is_active (w)))
1079	return;	1599	return;
1080		1600
1081	w->at += mn_now;	1601	((WT)w)->at += mn_now;
1082		1602
1083	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1603	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1084		1604
1085	ev_start (EV_A_ (W)w, ++timercnt);	1605	ev_start (EV_A_ (W)w, ++timercnt);
1086	array_needsize (timers, timermax, timercnt, );	1606	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1087	timers [timercnt - 1] = w;	1607	timers [timercnt - 1] = w;
1088	upheap ((WT *)timers, timercnt - 1);	1608	upheap ((WT *)timers, timercnt - 1);
1089	}
1090		1609
		1610	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1611	}
		1612
1091	void	1613	void
1092	ev_timer_stop (EV_P_ struct ev_timer *w)	1614	ev_timer_stop (EV_P_ ev_timer *w)
1093	{	1615	{
1094	ev_clear_pending (EV_A_ (W)w);	1616	ev_clear_pending (EV_A_ (W)w);
1095	if (!ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
1096	return;	1618	return;
1097		1619
1098	if (w->active < timercnt--)	1620	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1621
		1622	{
		1623	int active = ((W)w)->active;
		1624
		1625	if (expect_true (--active < --timercnt))
1099	{	1626	{
1100	timers [w->active - 1] = timers [timercnt];	1627	timers [active] = timers [timercnt];
1101	downheap ((WT *)timers, timercnt, w->active - 1);	1628	adjustheap ((WT *)timers, timercnt, active);
1102	}	1629	}
		1630	}
1103		1631
1104	w->at = w->repeat;	1632	((WT)w)->at -= mn_now;
1105		1633
1106	ev_stop (EV_A_ (W)w);	1634	ev_stop (EV_A_ (W)w);
1107	}	1635	}
1108		1636
1109	void	1637	void
1110	ev_timer_again (EV_P_ struct ev_timer *w)	1638	ev_timer_again (EV_P_ ev_timer *w)
1111	{	1639	{
1112	if (ev_is_active (w))	1640	if (ev_is_active (w))
1113	{	1641	{
1114	if (w->repeat)	1642	if (w->repeat)
1115	{	1643	{
1116	w->at = mn_now + w->repeat;	1644	((WT)w)->at = mn_now + w->repeat;
1117	downheap ((WT *)timers, timercnt, w->active - 1);	1645	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1118	}	1646	}
1119	else	1647	else
1120	ev_timer_stop (EV_A_ w);	1648	ev_timer_stop (EV_A_ w);
1121	}	1649	}
1122	else if (w->repeat)	1650	else if (w->repeat)
		1651	{
		1652	w->at = w->repeat;
1123	ev_timer_start (EV_A_ w);	1653	ev_timer_start (EV_A_ w);
		1654	}
1124	}	1655	}
1125		1656
		1657	#if EV_PERIODIC_ENABLE
1126	void	1658	void
1127	ev_periodic_start (EV_P_ struct ev_periodic *w)	1659	ev_periodic_start (EV_P_ ev_periodic *w)
1128	{	1660	{
1129	if (ev_is_active (w))	1661	if (expect_false (ev_is_active (w)))
1130	return;	1662	return;
1131		1663
		1664	if (w->reschedule_cb)
		1665	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1666	else if (w->interval)
		1667	{
1132	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1668	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1133
1134	/* this formula differs from the one in periodic_reify because we do not always round up */	1669	/* this formula differs from the one in periodic_reify because we do not always round up */
1135	if (w->interval)
1136	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1670	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1671	}
1137		1672
1138	ev_start (EV_A_ (W)w, ++periodiccnt);	1673	ev_start (EV_A_ (W)w, ++periodiccnt);
1139	array_needsize (periodics, periodicmax, periodiccnt, );	1674	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1140	periodics [periodiccnt - 1] = w;	1675	periodics [periodiccnt - 1] = w;
1141	upheap ((WT *)periodics, periodiccnt - 1);	1676	upheap ((WT *)periodics, periodiccnt - 1);
1142	}
1143		1677
		1678	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1679	}
		1680
1144	void	1681	void
1145	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1682	ev_periodic_stop (EV_P_ ev_periodic *w)
1146	{	1683	{
1147	ev_clear_pending (EV_A_ (W)w);	1684	ev_clear_pending (EV_A_ (W)w);
1148	if (!ev_is_active (w))	1685	if (expect_false (!ev_is_active (w)))
1149	return;	1686	return;
1150		1687
1151	if (w->active < periodiccnt--)	1688	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1689
		1690	{
		1691	int active = ((W)w)->active;
		1692
		1693	if (expect_true (--active < --periodiccnt))
1152	{	1694	{
1153	periodics [w->active - 1] = periodics [periodiccnt];	1695	periodics [active] = periodics [periodiccnt];
1154	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1696	adjustheap ((WT *)periodics, periodiccnt, active);
1155	}	1697	}
		1698	}
1156		1699
1157	ev_stop (EV_A_ (W)w);	1700	ev_stop (EV_A_ (W)w);
1158	}	1701	}
1159		1702
1160	void	1703	void
1161	ev_idle_start (EV_P_ struct ev_idle *w)	1704	ev_periodic_again (EV_P_ ev_periodic *w)
1162	{	1705	{
1163	if (ev_is_active (w))	1706	/* TODO: use adjustheap and recalculation */
1164	return;
1165
1166	ev_start (EV_A_ (W)w, ++idlecnt);
1167	array_needsize (idles, idlemax, idlecnt, );
1168	idles [idlecnt - 1] = w;
1169	}
1170
1171	void
1172	ev_idle_stop (EV_P_ struct ev_idle *w)
1173	{
1174	ev_clear_pending (EV_A_ (W)w);
1175	if (ev_is_active (w))
1176	return;
1177
1178	idles [w->active - 1] = idles [--idlecnt];
1179	ev_stop (EV_A_ (W)w);	1707	ev_periodic_stop (EV_A_ w);
		1708	ev_periodic_start (EV_A_ w);
1180	}	1709	}
1181		1710	#endif
1182	void
1183	ev_prepare_start (EV_P_ struct ev_prepare *w)
1184	{
1185	if (ev_is_active (w))
1186	return;
1187
1188	ev_start (EV_A_ (W)w, ++preparecnt);
1189	array_needsize (prepares, preparemax, preparecnt, );
1190	prepares [preparecnt - 1] = w;
1191	}
1192
1193	void
1194	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1195	{
1196	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))
1198	return;
1199
1200	prepares [w->active - 1] = prepares [--preparecnt];
1201	ev_stop (EV_A_ (W)w);
1202	}
1203
1204	void
1205	ev_check_start (EV_P_ struct ev_check *w)
1206	{
1207	if (ev_is_active (w))
1208	return;
1209
1210	ev_start (EV_A_ (W)w, ++checkcnt);
1211	array_needsize (checks, checkmax, checkcnt, );
1212	checks [checkcnt - 1] = w;
1213	}
1214
1215	void
1216	ev_check_stop (EV_P_ struct ev_check *w)
1217	{
1218	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))
1220	return;
1221
1222	checks [w->active - 1] = checks [--checkcnt];
1223	ev_stop (EV_A_ (W)w);
1224	}
1225		1711
1226	#ifndef SA_RESTART	1712	#ifndef SA_RESTART
1227	# define SA_RESTART 0	1713	# define SA_RESTART 0
1228	#endif	1714	#endif
1229		1715
1230	void	1716	void
1231	ev_signal_start (EV_P_ struct ev_signal *w)	1717	ev_signal_start (EV_P_ ev_signal *w)
1232	{	1718	{
1233	#if EV_MULTIPLICITY	1719	#if EV_MULTIPLICITY
1234	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1720	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1235	#endif	1721	#endif
1236	if (ev_is_active (w))	1722	if (expect_false (ev_is_active (w)))
1237	return;	1723	return;
1238		1724
1239	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1725	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1240		1726
1241	ev_start (EV_A_ (W)w, 1);	1727	ev_start (EV_A_ (W)w, 1);
1242	array_needsize (signals, signalmax, w->signum, signals_init);	1728	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1243	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1244		1730
1245	if (!w->next)	1731	if (!((WL)w)->next)
1246	{	1732	{
		1733	#if _WIN32
		1734	signal (w->signum, sighandler);
		1735	#else
1247	struct sigaction sa;	1736	struct sigaction sa;
1248	sa.sa_handler = sighandler;	1737	sa.sa_handler = sighandler;
1249	sigfillset (&sa.sa_mask);	1738	sigfillset (&sa.sa_mask);
1250	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1739	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1251	sigaction (w->signum, &sa, 0);	1740	sigaction (w->signum, &sa, 0);
		1741	#endif
1252	}	1742	}
1253	}	1743	}
1254		1744
1255	void	1745	void
1256	ev_signal_stop (EV_P_ struct ev_signal *w)	1746	ev_signal_stop (EV_P_ ev_signal *w)
1257	{	1747	{
1258	ev_clear_pending (EV_A_ (W)w);	1748	ev_clear_pending (EV_A_ (W)w);
1259	if (!ev_is_active (w))	1749	if (expect_false (!ev_is_active (w)))
1260	return;	1750	return;
1261		1751
1262	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1752	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1263	ev_stop (EV_A_ (W)w);	1753	ev_stop (EV_A_ (W)w);
1264		1754
1265	if (!signals [w->signum - 1].head)	1755	if (!signals [w->signum - 1].head)
1266	signal (w->signum, SIG_DFL);	1756	signal (w->signum, SIG_DFL);
1267	}	1757	}
1268		1758
1269	void	1759	void
1270	ev_child_start (EV_P_ struct ev_child *w)	1760	ev_child_start (EV_P_ ev_child *w)
1271	{	1761	{
1272	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1273	assert (("child watchers are only supported in the default loop", loop == default_loop));	1763	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1274	#endif	1764	#endif
1275	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1276	return;	1766	return;
1277		1767
1278	ev_start (EV_A_ (W)w, 1);	1768	ev_start (EV_A_ (W)w, 1);
1279	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1769	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1280	}	1770	}
1281		1771
1282	void	1772	void
1283	ev_child_stop (EV_P_ struct ev_child *w)	1773	ev_child_stop (EV_P_ ev_child *w)
1284	{	1774	{
1285	ev_clear_pending (EV_A_ (W)w);	1775	ev_clear_pending (EV_A_ (W)w);
1286	if (ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1287	return;	1777	return;
1288		1778
1289	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1779	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1290	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
1291	}	1781	}
1292		1782
		1783	#if EV_STAT_ENABLE
		1784
		1785	# ifdef _WIN32
		1786	# undef lstat
		1787	# define lstat(a,b) _stati64 (a,b)
		1788	# endif
		1789
		1790	#define DEF_STAT_INTERVAL 5.0074891
		1791	#define MIN_STAT_INTERVAL 0.1074891
		1792
		1793	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1794
		1795	#if EV_USE_INOTIFY
		1796	# define EV_INOTIFY_BUFSIZE 8192
		1797
		1798	static void noinline
		1799	infy_add (EV_P_ ev_stat *w)
		1800	{
		1801	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);
		1802
		1803	if (w->wd < 0)
		1804	{
		1805	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1806
		1807	/* monitor some parent directory for speedup hints */
		1808	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1809	{
		1810	char path [4096];
		1811	strcpy (path, w->path);
		1812
		1813	do
		1814	{
		1815	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1816	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1817
		1818	char *pend = strrchr (path, '/');
		1819
		1820	if (!pend)
		1821	break; /* whoops, no '/', complain to your admin */
		1822
		1823	*pend = 0;
		1824	w->wd = inotify_add_watch (fs_fd, path, mask);
		1825	}
		1826	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1827	}
		1828	}
		1829	else
		1830	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1831
		1832	if (w->wd >= 0)
		1833	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1834	}
		1835
		1836	static void noinline
		1837	infy_del (EV_P_ ev_stat *w)
		1838	{
		1839	int slot;
		1840	int wd = w->wd;
		1841
		1842	if (wd < 0)
		1843	return;
		1844
		1845	w->wd = -2;
		1846	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1847	wlist_del (&fs_hash [slot].head, (WL)w);
		1848
		1849	/* remove this watcher, if others are watching it, they will rearm */
		1850	inotify_rm_watch (fs_fd, wd);
		1851	}
		1852
		1853	static void noinline
		1854	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1855	{
		1856	if (slot < 0)
		1857	/* overflow, need to check for all hahs slots */
		1858	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1859	infy_wd (EV_A_ slot, wd, ev);
		1860	else
		1861	{
		1862	WL w_;
		1863
		1864	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1865	{
		1866	ev_stat *w = (ev_stat *)w_;
		1867	w_ = w_->next; /* lets us remove this watcher and all before it */
		1868
		1869	if (w->wd == wd || wd == -1)
		1870	{
		1871	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1872	{
		1873	w->wd = -1;
		1874	infy_add (EV_A_ w); /* re-add, no matter what */
		1875	}
		1876
		1877	stat_timer_cb (EV_A_ &w->timer, 0);
		1878	}
		1879	}
		1880	}
		1881	}
		1882
		1883	static void
		1884	infy_cb (EV_P_ ev_io *w, int revents)
		1885	{
		1886	char buf [EV_INOTIFY_BUFSIZE];
		1887	struct inotify_event *ev = (struct inotify_event *)buf;
		1888	int ofs;
		1889	int len = read (fs_fd, buf, sizeof (buf));
		1890
		1891	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1892	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1893	}
		1894
		1895	void inline_size
		1896	infy_init (EV_P)
		1897	{
		1898	if (fs_fd != -2)
		1899	return;
		1900
		1901	fs_fd = inotify_init ();
		1902
		1903	if (fs_fd >= 0)
		1904	{
		1905	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1906	ev_set_priority (&fs_w, EV_MAXPRI);
		1907	ev_io_start (EV_A_ &fs_w);
		1908	}
		1909	}
		1910
		1911	void inline_size
		1912	infy_fork (EV_P)
		1913	{
		1914	int slot;
		1915
		1916	if (fs_fd < 0)
		1917	return;
		1918
		1919	close (fs_fd);
		1920	fs_fd = inotify_init ();
		1921
		1922	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1923	{
		1924	WL w_ = fs_hash [slot].head;
		1925	fs_hash [slot].head = 0;
		1926
		1927	while (w_)
		1928	{
		1929	ev_stat *w = (ev_stat *)w_;
		1930	w_ = w_->next; /* lets us add this watcher */
		1931
		1932	w->wd = -1;
		1933
		1934	if (fs_fd >= 0)
		1935	infy_add (EV_A_ w); /* re-add, no matter what */
		1936	else
		1937	ev_timer_start (EV_A_ &w->timer);
		1938	}
		1939
		1940	}
		1941	}
		1942
		1943	#endif
		1944
		1945	void
		1946	ev_stat_stat (EV_P_ ev_stat *w)
		1947	{
		1948	if (lstat (w->path, &w->attr) < 0)
		1949	w->attr.st_nlink = 0;
		1950	else if (!w->attr.st_nlink)
		1951	w->attr.st_nlink = 1;
		1952	}
		1953
		1954	static void noinline
		1955	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1956	{
		1957	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1958
		1959	/* we copy this here each the time so that */
		1960	/* prev has the old value when the callback gets invoked */
		1961	w->prev = w->attr;
		1962	ev_stat_stat (EV_A_ w);
		1963
		1964	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1965	if (
		1966	w->prev.st_dev != w->attr.st_dev
		1967	|| w->prev.st_ino != w->attr.st_ino
		1968	|| w->prev.st_mode != w->attr.st_mode
		1969	|| w->prev.st_nlink != w->attr.st_nlink
		1970	|| w->prev.st_uid != w->attr.st_uid
		1971	|| w->prev.st_gid != w->attr.st_gid
		1972	|| w->prev.st_rdev != w->attr.st_rdev
		1973	|| w->prev.st_size != w->attr.st_size
		1974	|| w->prev.st_atime != w->attr.st_atime
		1975	|| w->prev.st_mtime != w->attr.st_mtime
		1976	|| w->prev.st_ctime != w->attr.st_ctime
		1977	) {
		1978	#if EV_USE_INOTIFY
		1979	infy_del (EV_A_ w);
		1980	infy_add (EV_A_ w);
		1981	ev_stat_stat (EV_A_ w); /* avoid race... */
		1982	#endif
		1983
		1984	ev_feed_event (EV_A_ w, EV_STAT);
		1985	}
		1986	}
		1987
		1988	void
		1989	ev_stat_start (EV_P_ ev_stat *w)
		1990	{
		1991	if (expect_false (ev_is_active (w)))
		1992	return;
		1993
		1994	/* since we use memcmp, we need to clear any padding data etc. */
		1995	memset (&w->prev, 0, sizeof (ev_statdata));
		1996	memset (&w->attr, 0, sizeof (ev_statdata));
		1997
		1998	ev_stat_stat (EV_A_ w);
		1999
		2000	if (w->interval < MIN_STAT_INTERVAL)
		2001	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2002
		2003	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2004	ev_set_priority (&w->timer, ev_priority (w));
		2005
		2006	#if EV_USE_INOTIFY
		2007	infy_init (EV_A);
		2008
		2009	if (fs_fd >= 0)
		2010	infy_add (EV_A_ w);
		2011	else
		2012	#endif
		2013	ev_timer_start (EV_A_ &w->timer);
		2014
		2015	ev_start (EV_A_ (W)w, 1);
		2016	}
		2017
		2018	void
		2019	ev_stat_stop (EV_P_ ev_stat *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	#if EV_USE_INOTIFY
		2026	infy_del (EV_A_ w);
		2027	#endif
		2028	ev_timer_stop (EV_A_ &w->timer);
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032	#endif
		2033
		2034	#if EV_IDLE_ENABLE
		2035	void
		2036	ev_idle_start (EV_P_ ev_idle *w)
		2037	{
		2038	if (expect_false (ev_is_active (w)))
		2039	return;
		2040
		2041	pri_adjust (EV_A_ (W)w);
		2042
		2043	{
		2044	int active = ++idlecnt [ABSPRI (w)];
		2045
		2046	++idleall;
		2047	ev_start (EV_A_ (W)w, active);
		2048
		2049	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2050	idles [ABSPRI (w)][active - 1] = w;
		2051	}
		2052	}
		2053
		2054	void
		2055	ev_idle_stop (EV_P_ ev_idle *w)
		2056	{
		2057	ev_clear_pending (EV_A_ (W)w);
		2058	if (expect_false (!ev_is_active (w)))
		2059	return;
		2060
		2061	{
		2062	int active = ((W)w)->active;
		2063
		2064	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2065	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	--idleall;
		2069	}
		2070	}
		2071	#endif
		2072
		2073	void
		2074	ev_prepare_start (EV_P_ ev_prepare *w)
		2075	{
		2076	if (expect_false (ev_is_active (w)))
		2077	return;
		2078
		2079	ev_start (EV_A_ (W)w, ++preparecnt);
		2080	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2081	prepares [preparecnt - 1] = w;
		2082	}
		2083
		2084	void
		2085	ev_prepare_stop (EV_P_ ev_prepare *w)
		2086	{
		2087	ev_clear_pending (EV_A_ (W)w);
		2088	if (expect_false (!ev_is_active (w)))
		2089	return;
		2090
		2091	{
		2092	int active = ((W)w)->active;
		2093	prepares [active - 1] = prepares [--preparecnt];
		2094	((W)prepares [active - 1])->active = active;
		2095	}
		2096
		2097	ev_stop (EV_A_ (W)w);
		2098	}
		2099
		2100	void
		2101	ev_check_start (EV_P_ ev_check *w)
		2102	{
		2103	if (expect_false (ev_is_active (w)))
		2104	return;
		2105
		2106	ev_start (EV_A_ (W)w, ++checkcnt);
		2107	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2108	checks [checkcnt - 1] = w;
		2109	}
		2110
		2111	void
		2112	ev_check_stop (EV_P_ ev_check *w)
		2113	{
		2114	ev_clear_pending (EV_A_ (W)w);
		2115	if (expect_false (!ev_is_active (w)))
		2116	return;
		2117
		2118	{
		2119	int active = ((W)w)->active;
		2120	checks [active - 1] = checks [--checkcnt];
		2121	((W)checks [active - 1])->active = active;
		2122	}
		2123
		2124	ev_stop (EV_A_ (W)w);
		2125	}
		2126
		2127	#if EV_EMBED_ENABLE
		2128	void noinline
		2129	ev_embed_sweep (EV_P_ ev_embed *w)
		2130	{
		2131	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2132	}
		2133
		2134	static void
		2135	embed_cb (EV_P_ ev_io *io, int revents)
		2136	{
		2137	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2138
		2139	if (ev_cb (w))
		2140	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2141	else
		2142	ev_embed_sweep (loop, w);
		2143	}
		2144
		2145	void
		2146	ev_embed_start (EV_P_ ev_embed *w)
		2147	{
		2148	if (expect_false (ev_is_active (w)))
		2149	return;
		2150
		2151	{
		2152	struct ev_loop *loop = w->loop;
		2153	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2154	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2155	}
		2156
		2157	ev_set_priority (&w->io, ev_priority (w));
		2158	ev_io_start (EV_A_ &w->io);
		2159
		2160	ev_start (EV_A_ (W)w, 1);
		2161	}
		2162
		2163	void
		2164	ev_embed_stop (EV_P_ ev_embed *w)
		2165	{
		2166	ev_clear_pending (EV_A_ (W)w);
		2167	if (expect_false (!ev_is_active (w)))
		2168	return;
		2169
		2170	ev_io_stop (EV_A_ &w->io);
		2171
		2172	ev_stop (EV_A_ (W)w);
		2173	}
		2174	#endif
		2175
		2176	#if EV_FORK_ENABLE
		2177	void
		2178	ev_fork_start (EV_P_ ev_fork *w)
		2179	{
		2180	if (expect_false (ev_is_active (w)))
		2181	return;
		2182
		2183	ev_start (EV_A_ (W)w, ++forkcnt);
		2184	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2185	forks [forkcnt - 1] = w;
		2186	}
		2187
		2188	void
		2189	ev_fork_stop (EV_P_ ev_fork *w)
		2190	{
		2191	ev_clear_pending (EV_A_ (W)w);
		2192	if (expect_false (!ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	int active = ((W)w)->active;
		2197	forks [active - 1] = forks [--forkcnt];
		2198	((W)forks [active - 1])->active = active;
		2199	}
		2200
		2201	ev_stop (EV_A_ (W)w);
		2202	}
		2203	#endif
		2204
1293	/*****************************************************************************/	2205	/*****************************************************************************/
1294		2206
1295	struct ev_once	2207	struct ev_once
1296	{	2208	{
1297	struct ev_io io;	2209	ev_io io;
1298	struct ev_timer to;	2210	ev_timer to;
1299	void (*cb)(int revents, void *arg);	2211	void (*cb)(int revents, void *arg);
1300	void *arg;	2212	void *arg;
1301	};	2213	};
1302		2214
1303	static void	2215	static void
…		…
1306	void (*cb)(int revents, void *arg) = once->cb;	2218	void (*cb)(int revents, void *arg) = once->cb;
1307	void *arg = once->arg;	2219	void *arg = once->arg;
1308		2220
1309	ev_io_stop (EV_A_ &once->io);	2221	ev_io_stop (EV_A_ &once->io);
1310	ev_timer_stop (EV_A_ &once->to);	2222	ev_timer_stop (EV_A_ &once->to);
1311	free (once);	2223	ev_free (once);
1312		2224
1313	cb (revents, arg);	2225	cb (revents, arg);
1314	}	2226	}
1315		2227
1316	static void	2228	static void
1317	once_cb_io (EV_P_ struct ev_io *w, int revents)	2229	once_cb_io (EV_P_ ev_io *w, int revents)
1318	{	2230	{
1319	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2231	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1320	}	2232	}
1321		2233
1322	static void	2234	static void
1323	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2235	once_cb_to (EV_P_ ev_timer *w, int revents)
1324	{	2236	{
1325	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2237	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1326	}	2238	}
1327		2239
1328	void	2240	void
1329	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2241	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1330	{	2242	{
1331	struct ev_once *once = malloc (sizeof (struct ev_once));	2243	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1332		2244
1333	if (!once)	2245	if (expect_false (!once))
		2246	{
1334	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2247	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1335	else	2248	return;
1336	{	2249	}
		2250
1337	once->cb = cb;	2251	once->cb = cb;
1338	once->arg = arg;	2252	once->arg = arg;
1339		2253
1340	ev_watcher_init (&once->io, once_cb_io);	2254	ev_init (&once->io, once_cb_io);
1341	if (fd >= 0)	2255	if (fd >= 0)
1342	{	2256	{
1343	ev_io_set (&once->io, fd, events);	2257	ev_io_set (&once->io, fd, events);
1344	ev_io_start (EV_A_ &once->io);	2258	ev_io_start (EV_A_ &once->io);
1345	}	2259	}
1346		2260
1347	ev_watcher_init (&once->to, once_cb_to);	2261	ev_init (&once->to, once_cb_to);
1348	if (timeout >= 0.)	2262	if (timeout >= 0.)
1349	{	2263	{
1350	ev_timer_set (&once->to, timeout, 0.);	2264	ev_timer_set (&once->to, timeout, 0.);
1351	ev_timer_start (EV_A_ &once->to);	2265	ev_timer_start (EV_A_ &once->to);
1352	}
1353	}	2266	}
1354	}	2267	}
1355		2268
		2269	#ifdef __cplusplus
		2270	}
		2271	#endif
		2272

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