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Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.163 by root, Wed Dec 5 13:54:36 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>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#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
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# 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
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# 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
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# 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
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		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
121	/**/	219	/**/
122		220
123	#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) */
124	#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) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#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 */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
150	/*****************************************************************************/	261	/*****************************************************************************/
151		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
152	typedef struct	313	typedef struct
153	{	314	{
154	struct ev_watcher_list *head;	315	WL head;
155	unsigned char events;	316	unsigned char events;
156	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
157	} ANFD;	321	} ANFD;
158		322
159	typedef struct	323	typedef struct
160	{	324	{
161	W w;	325	W w;
162	int events;	326	int events;
163	} ANPENDING;	327	} ANPENDING;
164		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
165	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
166		337
167	struct ev_loop	338	struct ev_loop
168	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	343	#include "ev_vars.h"
171	};
172	# undef VAR	344	#undef VAR
		345	};
173	# 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;
174		350
175	#else	351	#else
176		352
		353	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	355	#include "ev_vars.h"
179	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
180		359
181	#endif	360	#endif
182		361
183	/*****************************************************************************/	362	/*****************************************************************************/
184		363
185	inline ev_tstamp	364	ev_tstamp
186	ev_time (void)	365	ev_time (void)
187	{	366	{
188	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
189	struct timespec ts;	368	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	375	#endif
197	}	376	}
198		377
199	inline ev_tstamp	378	ev_tstamp inline_size
200	get_clock (void)	379	get_clock (void)
201	{	380	{
202	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
204	{	383	{
…		…
209	#endif	388	#endif
210		389
211	return ev_time ();	390	return ev_time ();
212	}	391	}
213		392
		393	#if EV_MULTIPLICITY
214	ev_tstamp	394	ev_tstamp
215	ev_now (EV_P)	395	ev_now (EV_P)
216	{	396	{
217	return rt_now;	397	return ev_rt_now;
218	}	398	}
		399	#endif
219		400
220	#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;
221		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
222	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
224	{ \	431	{ \
225	int newcnt = cur; \	432	int ocur_ = (cur); \
226	do \	433	(base) = (type *)array_realloc \
227	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
228	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
229	} \	436	}
230	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
231	\	441	{ \
232	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
233	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
234	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
235	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236		450
237	/*****************************************************************************/	451	/*****************************************************************************/
238		452
239	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
240	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
241	{	483	{
242	while (count--)	484	while (count--)
243	{	485	{
244	base->head = 0;	486	base->head = 0;
…		…
247		489
248	++base;	490	++base;
249	}	491	}
250	}	492	}
251		493
252	static void	494	void inline_speed
253	event (EV_P_ W w, int events)
254	{
255	if (w->pending)
256	{
257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
258	return;
259	}
260
261	w->pending = ++pendingcnt [ABSPRI (w)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263	pendings [ABSPRI (w)][w->pending - 1].w = w;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;
265	}
266
267	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{
270	int i;
271
272	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);
274	}
275
276	static void
277	fd_event (EV_P_ int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
278	{	496	{
279	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	498	ev_io *w;
281		499
282	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)
283	{	501	{
284	int ev = w->events & events;	502	int ev = w->events & revents;
285		503
286	if (ev)	504	if (ev)
287	event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
288	}	506	}
289	}	507	}
290		508
291	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
292		514
293	static void	515	void inline_size
294	fd_reify (EV_P)	516	fd_reify (EV_P)
295	{	517	{
296	int i;	518	int i;
297		519
298	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
299	{	521	{
300	int fd = fdchanges [i];	522	int fd = fdchanges [i];
301	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
302	struct ev_io *w;	524	ev_io *w;
303		525
304	int events = 0;	526	int events = 0;
305		527
306	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)
307	events |= w->events;	529	events |= w->events;
308		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
309	anfd->reify = 0;	540	anfd->reify = 0;
310		541
311	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
312	anfd->events = events;	543	anfd->events = events;
313	}	544	}
314		545
315	fdchangecnt = 0;	546	fdchangecnt = 0;
316	}	547	}
317		548
318	static void	549	void inline_size
319	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
320	{	551	{
321	if (anfds [fd].reify || fdchangecnt < 0)	552	if (expect_false (anfds [fd].reify))
322	return;	553	return;
323		554
324	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
325		556
326	++fdchangecnt;	557	++fdchangecnt;
327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
328	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
329	}	560	}
330		561
331	static void	562	void inline_speed
332	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
333	{	564	{
334	struct ev_io *w;	565	ev_io *w;
335		566
336	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
337	{	568	{
338	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
339	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);
340	}	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
341	}	582	}
342		583
343	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
344	static void	585	static void noinline
345	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
346	{	587	{
347	int fd;	588	int fd;
348		589
349	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
350	if (anfds [fd].events)	591	if (anfds [fd].events)
351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
352	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
353	}	594	}
354		595
355	/* 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 */
356	static void	597	static void noinline
357	fd_enomem (EV_P)	598	fd_enomem (EV_P)
358	{	599	{
359	int fd;	600	int fd;
360		601
361	for (fd = anfdmax; fd--; )	602	for (fd = anfdmax; fd--; )
362	if (anfds [fd].events)	603	if (anfds [fd].events)
363	{	604	{
364	close (fd);
365	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
366	return;	606	return;
367	}	607	}
368	}	608	}
369		609
370	/* 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 */
371	static void	611	static void noinline
372	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
373	{	613	{
374	int fd;	614	int fd;
375		615
376	/* this should be highly optimised to not do anything but set a flag */
377	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
378	if (anfds [fd].events)	617	if (anfds [fd].events)
379	{	618	{
380	anfds [fd].events = 0;	619	anfds [fd].events = 0;
381	fd_change (EV_A_ fd);	620	fd_change (EV_A_ fd);
382	}	621	}
383	}	622	}
384		623
385	/*****************************************************************************/	624	/*****************************************************************************/
386		625
387	static void	626	void inline_speed
388	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
389	{	628	{
390	WT w = heap [k];	629	WT w = heap [k];
391		630
392	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
…		…
399	heap [k] = w;	638	heap [k] = w;
400	((W)heap [k])->active = k + 1;	639	((W)heap [k])->active = k + 1;
401		640
402	}	641	}
403		642
404	static void	643	void inline_speed
405	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
406	{	645	{
407	WT w = heap [k];	646	WT w = heap [k];
408		647
409	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
423		662
424	heap [k] = w;	663	heap [k] = w;
425	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
426	}	665	}
427		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
		672	}
		673
428	/*****************************************************************************/	674	/*****************************************************************************/
429		675
430	typedef struct	676	typedef struct
431	{	677	{
432	struct ev_watcher_list *head;	678	WL head;
433	sig_atomic_t volatile gotsig;	679	sig_atomic_t volatile gotsig;
434	} ANSIG;	680	} ANSIG;
435		681
436	static ANSIG *signals;	682	static ANSIG *signals;
437	static int signalmax;	683	static int signalmax;
438		684
439	static int sigpipe [2];	685	static int sigpipe [2];
440	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
441	static struct ev_io sigev;	687	static ev_io sigev;
442		688
443	static void	689	void inline_size
444	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
445	{	691	{
446	while (count--)	692	while (count--)
447	{	693	{
448	base->head = 0;	694	base->head = 0;
…		…
453	}	699	}
454		700
455	static void	701	static void
456	sighandler (int signum)	702	sighandler (int signum)
457	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
458	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
459		709
460	if (!gotsig)	710	if (!gotsig)
461	{	711	{
462	int old_errno = errno;	712	int old_errno = errno;
…		…
464	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
465	errno = old_errno;	715	errno = old_errno;
466	}	716	}
467	}	717	}
468		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
469	static void	739	static void
470	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
471	{	741	{
472	struct ev_watcher_list *w;
473	int signum;	742	int signum;
474		743
475	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
476	gotsig = 0;	745	gotsig = 0;
477		746
478	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
479	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
480	{	749	ev_feed_signal_event (EV_A_ signum + 1);
481	signals [signum].gotsig = 0;
482
483	for (w = signals [signum].head; w; w = w->next)
484	event (EV_A_ (W)w, EV_SIGNAL);
485	}
486	}	750	}
487		751
488	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
489	siginit (EV_P)	765	siginit (EV_P)
490	{	766	{
491	#ifndef WIN32	767	fd_intern (sigpipe [0]);
492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495	/* rather than sort out wether we really need nb, set it */
496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498	#endif
499		769
500	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
501	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
502	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
503	}	773	}
504		774
505	/*****************************************************************************/	775	/*****************************************************************************/
506		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
507	#ifndef WIN32	779	#ifndef _WIN32
508		780
509	static struct ev_child *childs [PID_HASHSIZE];
510	static struct ev_signal childev;	781	static ev_signal childev;
511		782
512	#ifndef WCONTINUED	783	void inline_speed
513	# define WCONTINUED 0
514	#endif
515
516	static void
517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
518	{	785	{
519	struct ev_child *w;	786	ev_child *w;
520		787
521	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
522	if (w->pid == pid || !w->pid)	789	if (w->pid == pid || !w->pid)
523	{	790	{
524	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	791	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525	w->rpid = pid;	792	w->rpid = pid;
526	w->rstatus = status;	793	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	795	}
529	}	796	}
530		797
		798	#ifndef WCONTINUED
		799	# define WCONTINUED 0
		800	#endif
		801
531	static void	802	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
533	{	804	{
534	int pid, status;	805	int pid, status;
535		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
538	/* 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 */
539	event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		817
541	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
542	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 */
543	}
544	}	821	}
545		822
546	#endif	823	#endif
547		824
548	/*****************************************************************************/	825	/*****************************************************************************/
549		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
550	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
552	#endif	832	#endif
553	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
571	{	851	{
572	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
573	}	853	}
574		854
575	/* 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 */
576	static int	856	int inline_size
577	enable_secure (void)	857	enable_secure (void)
578	{	858	{
579	#ifdef WIN32	859	#ifdef _WIN32
580	return 0;	860	return 0;
581	#else	861	#else
582	return getuid () != geteuid ()	862	return getuid () != geteuid ()
583	|| getgid () != getegid ();	863	|| getgid () != getegid ();
584	#endif	864	#endif
585	}	865	}
586		866
587	int	867	unsigned int
588	ev_method (EV_P)	868	ev_supported_backends (void)
589	{	869	{
590	return method;	870	unsigned int flags = 0;
591	}
592		871
593	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594	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)
595	{	883	{
596	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)
597	{	923	{
598	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
599	{	925	{
600	struct timespec ts;	926	struct timespec ts;
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	928	have_monotonic = 1;
603	}	929	}
604	#endif	930	#endif
605		931
606	rt_now = ev_time ();	932	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	933	mn_now = get_clock ();
608	now_floor = mn_now;	934	now_floor = mn_now;
609	rtmn_diff = rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
610		936
611	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
612	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"))
613	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
614	else
615	methods = EVMETHOD_ANY;
616		947
617	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
618	#if EV_USE_WIN32	953	#if EV_USE_INOTIFY
619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
620	#endif	959	#endif
621	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623	#endif	962	#endif
624	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626	#endif	965	#endif
627	#if EV_USE_POLL	966	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629	#endif	968	#endif
630	#if EV_USE_SELECT	969	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632	#endif	971	#endif
633	}
634	}
635		972
636	void	973	ev_init (&sigev, sigcb);
		974	ev_set_priority (&sigev, EV_MAXPRI);
		975	}
		976	}
		977
		978	static void noinline
637	loop_destroy (EV_P)	979	loop_destroy (EV_P)
638	{	980	{
		981	int i;
		982
639	#if EV_USE_WIN32	983	#if EV_USE_INOTIFY
640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	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);
641	#endif	993	#endif
642	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
644	#endif	996	#endif
645	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
647	#endif	999	#endif
648	#if EV_USE_POLL	1000	#if EV_USE_POLL
649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
650	#endif	1002	#endif
651	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
653	#endif	1005	#endif
654		1006
655	method = 0;	1007	for (i = NUMPRI; i--; )
656	/*TODO*/	1008	array_free (pending, [i]);
657	}
658		1009
659	void	1010	/* have to use the microsoft-never-gets-it-right macro */
		1011	array_free (fdchange, EMPTY0);
		1012	array_free (timer, EMPTY0);
		1013	#if EV_PERIODIC_ENABLE
		1014	array_free (periodic, EMPTY0);
		1015	#endif
		1016	array_free (idle, EMPTY0);
		1017	array_free (prepare, EMPTY0);
		1018	array_free (check, EMPTY0);
		1019
		1020	backend = 0;
		1021	}
		1022
		1023	void inline_size infy_fork (EV_P);
		1024
		1025	void inline_size
660	loop_fork (EV_P)	1026	loop_fork (EV_P)
661	{	1027	{
662	/*TODO*/	1028	#if EV_USE_PORT
		1029	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1030	#endif
		1031	#if EV_USE_KQUEUE
		1032	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1033	#endif
663	#if EV_USE_EPOLL	1034	#if EV_USE_EPOLL
664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1035	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
665	#endif	1036	#endif
666	#if EV_USE_KQUEUE	1037	#if EV_USE_INOTIFY
667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1038	infy_fork (EV_A);
668	#endif	1039	#endif
		1040
		1041	if (ev_is_active (&sigev))
		1042	{
		1043	/* default loop */
		1044
		1045	ev_ref (EV_A);
		1046	ev_io_stop (EV_A_ &sigev);
		1047	close (sigpipe [0]);
		1048	close (sigpipe [1]);
		1049
		1050	while (pipe (sigpipe))
		1051	syserr ("(libev) error creating pipe");
		1052
		1053	siginit (EV_A);
		1054	}
		1055
		1056	postfork = 0;
669	}	1057	}
670		1058
671	#if EV_MULTIPLICITY	1059	#if EV_MULTIPLICITY
672	struct ev_loop *	1060	struct ev_loop *
673	ev_loop_new (int methods)	1061	ev_loop_new (unsigned int flags)
674	{	1062	{
675	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1063	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
676		1064
		1065	memset (loop, 0, sizeof (struct ev_loop));
		1066
677	loop_init (EV_A_ methods);	1067	loop_init (EV_A_ flags);
678		1068
679	if (ev_method (EV_A))	1069	if (ev_backend (EV_A))
680	return loop;	1070	return loop;
681		1071
682	return 0;	1072	return 0;
683	}	1073	}
684		1074
685	void	1075	void
686	ev_loop_destroy (EV_P)	1076	ev_loop_destroy (EV_P)
687	{	1077	{
688	loop_destroy (EV_A);	1078	loop_destroy (EV_A);
689	free (loop);	1079	ev_free (loop);
690	}	1080	}
691		1081
692	void	1082	void
693	ev_loop_fork (EV_P)	1083	ev_loop_fork (EV_P)
694	{	1084	{
695	loop_fork (EV_A);	1085	postfork = 1;
696	}	1086	}
697		1087
698	#endif	1088	#endif
699		1089
700	#if EV_MULTIPLICITY	1090	#if EV_MULTIPLICITY
701	struct ev_loop default_loop_struct;
702	static struct ev_loop *default_loop;
703
704	struct ev_loop *	1091	struct ev_loop *
		1092	ev_default_loop_init (unsigned int flags)
705	#else	1093	#else
706	static int default_loop;
707
708	int	1094	int
		1095	ev_default_loop (unsigned int flags)
709	#endif	1096	#endif
710	ev_default_loop (int methods)
711	{	1097	{
712	if (sigpipe [0] == sigpipe [1])	1098	if (sigpipe [0] == sigpipe [1])
713	if (pipe (sigpipe))	1099	if (pipe (sigpipe))
714	return 0;	1100	return 0;
715		1101
716	if (!default_loop)	1102	if (!ev_default_loop_ptr)
717	{	1103	{
718	#if EV_MULTIPLICITY	1104	#if EV_MULTIPLICITY
719	struct ev_loop *loop = default_loop = &default_loop_struct;	1105	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
720	#else	1106	#else
721	default_loop = 1;	1107	ev_default_loop_ptr = 1;
722	#endif	1108	#endif
723		1109
724	loop_init (EV_A_ methods);	1110	loop_init (EV_A_ flags);
725		1111
726	if (ev_method (EV_A))	1112	if (ev_backend (EV_A))
727	{	1113	{
728	ev_watcher_init (&sigev, sigcb);
729	ev_set_priority (&sigev, EV_MAXPRI);
730	siginit (EV_A);	1114	siginit (EV_A);
731		1115
732	#ifndef WIN32	1116	#ifndef _WIN32
733	ev_signal_init (&childev, childcb, SIGCHLD);	1117	ev_signal_init (&childev, childcb, SIGCHLD);
734	ev_set_priority (&childev, EV_MAXPRI);	1118	ev_set_priority (&childev, EV_MAXPRI);
735	ev_signal_start (EV_A_ &childev);	1119	ev_signal_start (EV_A_ &childev);
736	ev_unref (EV_A); /* child watcher should not keep loop alive */	1120	ev_unref (EV_A); /* child watcher should not keep loop alive */
737	#endif	1121	#endif
738	}	1122	}
739	else	1123	else
740	default_loop = 0;	1124	ev_default_loop_ptr = 0;
741	}	1125	}
742		1126
743	return default_loop;	1127	return ev_default_loop_ptr;
744	}	1128	}
745		1129
746	void	1130	void
747	ev_default_destroy (void)	1131	ev_default_destroy (void)
748	{	1132	{
749	#if EV_MULTIPLICITY	1133	#if EV_MULTIPLICITY
750	struct ev_loop *loop = default_loop;	1134	struct ev_loop *loop = ev_default_loop_ptr;
751	#endif	1135	#endif
752		1136
		1137	#ifndef _WIN32
753	ev_ref (EV_A); /* child watcher */	1138	ev_ref (EV_A); /* child watcher */
754	ev_signal_stop (EV_A_ &childev);	1139	ev_signal_stop (EV_A_ &childev);
		1140	#endif
755		1141
756	ev_ref (EV_A); /* signal watcher */	1142	ev_ref (EV_A); /* signal watcher */
757	ev_io_stop (EV_A_ &sigev);	1143	ev_io_stop (EV_A_ &sigev);
758		1144
759	close (sigpipe [0]); sigpipe [0] = 0;	1145	close (sigpipe [0]); sigpipe [0] = 0;
…		…
764		1150
765	void	1151	void
766	ev_default_fork (void)	1152	ev_default_fork (void)
767	{	1153	{
768	#if EV_MULTIPLICITY	1154	#if EV_MULTIPLICITY
769	struct ev_loop *loop = default_loop;	1155	struct ev_loop *loop = ev_default_loop_ptr;
770	#endif	1156	#endif
771		1157
772	loop_fork (EV_A);	1158	if (backend)
773		1159	postfork = 1;
774	ev_io_stop (EV_A_ &sigev);
775	close (sigpipe [0]);
776	close (sigpipe [1]);
777	pipe (sigpipe);
778
779	ev_ref (EV_A); /* signal watcher */
780	siginit (EV_A);
781	}	1160	}
782		1161
783	/*****************************************************************************/	1162	/*****************************************************************************/
784		1163
785	static void	1164	int inline_size
		1165	any_pending (EV_P)
		1166	{
		1167	int pri;
		1168
		1169	for (pri = NUMPRI; pri--; )
		1170	if (pendingcnt [pri])
		1171	return 1;
		1172
		1173	return 0;
		1174	}
		1175
		1176	void inline_speed
786	call_pending (EV_P)	1177	call_pending (EV_P)
787	{	1178	{
788	int pri;	1179	int pri;
789		1180
790	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
791	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
792	{	1183	{
793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794		1185
795	if (p->w)	1186	if (expect_true (p->w))
796	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
797	p->w->pending = 0;	1190	p->w->pending = 0;
798		1191	EV_CB_INVOKE (p->w, p->events);
799	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800	}	1192	}
801	}	1193	}
802	}	1194	}
803		1195
804	static void	1196	void inline_size
805	timers_reify (EV_P)	1197	timers_reify (EV_P)
806	{	1198	{
807	while (timercnt && ((WT)timers [0])->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
808	{	1200	{
809	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
810		1202
811	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
812		1204
813	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
814	if (w->repeat)	1206	if (w->repeat)
815	{	1207	{
816	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1209
817	((WT)w)->at = mn_now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
818	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
819	}	1215	}
820	else	1216	else
821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822		1218
823	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824	}	1220	}
825	}	1221	}
826		1222
827	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
828	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
829	{	1226	{
830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
831	{	1228	{
832	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
833		1230
834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
835		1232
836	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
837	if (w->interval)	1234	if (w->reschedule_cb)
838	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
841	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
842	}	1245	}
843	else	1246	else
844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845		1248
846	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847	}	1250	}
848	}	1251	}
849		1252
850	static void	1253	static void noinline
851	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
852	{	1255	{
853	int i;	1256	int i;
854		1257
855	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
856	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
857	{	1260	{
858	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
859		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
860	if (w->interval)	1265	else if (w->interval)
861	{
862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864	if (fabs (diff) >= 1e-4)
865	{
866	ev_periodic_stop (EV_A_ w);
867	ev_periodic_start (EV_A_ w);
868
869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
870	}
871	}
872	}	1267	}
873	}
874		1268
875	inline int	1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		1275	int inline_size
876	time_update_monotonic (EV_P)	1276	time_update_monotonic (EV_P)
877	{	1277	{
878	mn_now = get_clock ();	1278	mn_now = get_clock ();
879		1279
880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1280	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881	{	1281	{
882	rt_now = rtmn_diff + mn_now;	1282	ev_rt_now = rtmn_diff + mn_now;
883	return 0;	1283	return 0;
884	}	1284	}
885	else	1285	else
886	{	1286	{
887	now_floor = mn_now;	1287	now_floor = mn_now;
888	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
889	return 1;	1289	return 1;
890	}	1290	}
891	}	1291	}
892		1292
893	static void	1293	void inline_size
894	time_update (EV_P)	1294	time_update (EV_P)
895	{	1295	{
896	int i;	1296	int i;
897		1297
898	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
…		…
900	{	1300	{
901	if (time_update_monotonic (EV_A))	1301	if (time_update_monotonic (EV_A))
902	{	1302	{
903	ev_tstamp odiff = rtmn_diff;	1303	ev_tstamp odiff = rtmn_diff;
904		1304
905	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1305	/* loop a few times, before making important decisions.
		1306	* on the choice of "4": one iteration isn't enough,
		1307	* in case we get preempted during the calls to
		1308	* ev_time and get_clock. a second call is almost guaranteed
		1309	* to succeed in that case, though. and looping a few more times
		1310	* doesn't hurt either as we only do this on time-jumps or
		1311	* in the unlikely event of having been preempted here.
		1312	*/
		1313	for (i = 4; --i; )
906	{	1314	{
907	rtmn_diff = rt_now - mn_now;	1315	rtmn_diff = ev_rt_now - mn_now;
908		1316
909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1317	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910	return; /* all is well */	1318	return; /* all is well */
911		1319
912	rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
913	mn_now = get_clock ();	1321	mn_now = get_clock ();
914	now_floor = mn_now;	1322	now_floor = mn_now;
915	}	1323	}
916		1324
		1325	# if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1326	periodics_reschedule (EV_A);
		1327	# endif
918	/* no timer adjustment, as the monotonic clock doesn't jump */	1328	/* no timer adjustment, as the monotonic clock doesn't jump */
919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1329	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920	}	1330	}
921	}	1331	}
922	else	1332	else
923	#endif	1333	#endif
924	{	1334	{
925	rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
926		1336
927	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1337	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
928	{	1338	{
		1339	#if EV_PERIODIC_ENABLE
929	periodics_reschedule (EV_A);	1340	periodics_reschedule (EV_A);
		1341	#endif
930		1342
931	/* adjust timers. this is easy, as the offset is the same for all */	1343	/* adjust timers. this is easy, as the offset is the same for all of them */
932	for (i = 0; i < timercnt; ++i)	1344	for (i = 0; i < timercnt; ++i)
933	((WT)timers [i])->at += rt_now - mn_now;	1345	((WT)timers [i])->at += ev_rt_now - mn_now;
934	}	1346	}
935		1347
936	mn_now = rt_now;	1348	mn_now = ev_rt_now;
937	}	1349	}
938	}	1350	}
939		1351
940	void	1352	void
941	ev_ref (EV_P)	1353	ev_ref (EV_P)
…		…
952	static int loop_done;	1364	static int loop_done;
953		1365
954	void	1366	void
955	ev_loop (EV_P_ int flags)	1367	ev_loop (EV_P_ int flags)
956	{	1368	{
957	double block;
958	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1369	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1370	? EVUNLOOP_ONE
		1371	: EVUNLOOP_CANCEL;
		1372
		1373	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
959		1374
960	do	1375	do
961	{	1376	{
		1377	#ifndef _WIN32
		1378	if (expect_false (curpid)) /* penalise the forking check even more */
		1379	if (expect_false (getpid () != curpid))
		1380	{
		1381	curpid = getpid ();
		1382	postfork = 1;
		1383	}
		1384	#endif
		1385
		1386	#if EV_FORK_ENABLE
		1387	/* we might have forked, so queue fork handlers */
		1388	if (expect_false (postfork))
		1389	if (forkcnt)
		1390	{
		1391	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1392	call_pending (EV_A);
		1393	}
		1394	#endif
		1395
962	/* queue check watchers (and execute them) */	1396	/* queue check watchers (and execute them) */
963	if (expect_false (preparecnt))	1397	if (expect_false (preparecnt))
964	{	1398	{
965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1399	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966	call_pending (EV_A);	1400	call_pending (EV_A);
967	}	1401	}
968		1402
		1403	if (expect_false (!activecnt))
		1404	break;
		1405
		1406	/* we might have forked, so reify kernel state if necessary */
		1407	if (expect_false (postfork))
		1408	loop_fork (EV_A);
		1409
969	/* update fd-related kernel structures */	1410	/* update fd-related kernel structures */
970	fd_reify (EV_A);	1411	fd_reify (EV_A);
971		1412
972	/* calculate blocking time */	1413	/* calculate blocking time */
		1414	{
		1415	ev_tstamp block;
973		1416
974	/* we only need this for !monotonic clockor timers, but as we basically	1417	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
975	always have timers, we just calculate it always */	1418	block = 0.; /* do not block at all */
		1419	else
		1420	{
		1421	/* update time to cancel out callback processing overhead */
976	#if EV_USE_MONOTONIC	1422	#if EV_USE_MONOTONIC
977	if (expect_true (have_monotonic))	1423	if (expect_true (have_monotonic))
978	time_update_monotonic (EV_A);	1424	time_update_monotonic (EV_A);
979	else	1425	else
980	#endif	1426	#endif
981	{	1427	{
982	rt_now = ev_time ();	1428	ev_rt_now = ev_time ();
983	mn_now = rt_now;	1429	mn_now = ev_rt_now;
984	}	1430	}
985		1431
986	if (flags & EVLOOP_NONBLOCK || idlecnt)
987	block = 0.;
988	else
989	{
990	block = MAX_BLOCKTIME;	1432	block = MAX_BLOCKTIME;
991		1433
992	if (timercnt)	1434	if (timercnt)
993	{	1435	{
994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1436	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
995	if (block > to) block = to;	1437	if (block > to) block = to;
996	}	1438	}
997		1439
		1440	#if EV_PERIODIC_ENABLE
998	if (periodiccnt)	1441	if (periodiccnt)
999	{	1442	{
1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1443	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1001	if (block > to) block = to;	1444	if (block > to) block = to;
1002	}	1445	}
		1446	#endif
1003		1447
1004	if (block < 0.) block = 0.;	1448	if (expect_false (block < 0.)) block = 0.;
1005	}	1449	}
1006		1450
		1451	++loop_count;
1007	method_poll (EV_A_ block);	1452	backend_poll (EV_A_ block);
		1453	}
1008		1454
1009	/* update rt_now, do magic */	1455	/* update ev_rt_now, do magic */
1010	time_update (EV_A);	1456	time_update (EV_A);
1011		1457
1012	/* queue pending timers and reschedule them */	1458	/* queue pending timers and reschedule them */
1013	timers_reify (EV_A); /* relative timers called last */	1459	timers_reify (EV_A); /* relative timers called last */
		1460	#if EV_PERIODIC_ENABLE
1014	periodics_reify (EV_A); /* absolute timers called first */	1461	periodics_reify (EV_A); /* absolute timers called first */
		1462	#endif
1015		1463
1016	/* queue idle watchers unless io or timers are pending */	1464	/* queue idle watchers unless other events are pending */
1017	if (!pendingcnt)	1465	if (idlecnt && !any_pending (EV_A))
1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1466	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019		1467
1020	/* queue check watchers, to be executed first */	1468	/* queue check watchers, to be executed first */
1021	if (checkcnt)	1469	if (expect_false (checkcnt))
1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1470	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1023		1471
1024	call_pending (EV_A);	1472	call_pending (EV_A);
		1473
1025	}	1474	}
1026	while (activecnt && !loop_done);	1475	while (expect_true (activecnt && !loop_done));
1027		1476
1028	if (loop_done != 2)	1477	if (loop_done == EVUNLOOP_ONE)
1029	loop_done = 0;	1478	loop_done = EVUNLOOP_CANCEL;
1030	}	1479	}
1031		1480
1032	void	1481	void
1033	ev_unloop (EV_P_ int how)	1482	ev_unloop (EV_P_ int how)
1034	{	1483	{
1035	loop_done = how;	1484	loop_done = how;
1036	}	1485	}
1037		1486
1038	/*****************************************************************************/	1487	/*****************************************************************************/
1039		1488
1040	inline void	1489	void inline_size
1041	wlist_add (WL *head, WL elem)	1490	wlist_add (WL *head, WL elem)
1042	{	1491	{
1043	elem->next = *head;	1492	elem->next = *head;
1044	*head = elem;	1493	*head = elem;
1045	}	1494	}
1046		1495
1047	inline void	1496	void inline_size
1048	wlist_del (WL *head, WL elem)	1497	wlist_del (WL *head, WL elem)
1049	{	1498	{
1050	while (*head)	1499	while (*head)
1051	{	1500	{
1052	if (*head == elem)	1501	if (*head == elem)
…		…
1057		1506
1058	head = &(*head)->next;	1507	head = &(*head)->next;
1059	}	1508	}
1060	}	1509	}
1061		1510
1062	inline void	1511	void inline_speed
1063	ev_clear_pending (EV_P_ W w)	1512	ev_clear_pending (EV_P_ W w)
1064	{	1513	{
1065	if (w->pending)	1514	if (w->pending)
1066	{	1515	{
1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1516	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1068	w->pending = 0;	1517	w->pending = 0;
1069	}	1518	}
1070	}	1519	}
1071		1520
1072	inline void	1521	void inline_speed
1073	ev_start (EV_P_ W w, int active)	1522	ev_start (EV_P_ W w, int active)
1074	{	1523	{
1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1524	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1525	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1077		1526
1078	w->active = active;	1527	w->active = active;
1079	ev_ref (EV_A);	1528	ev_ref (EV_A);
1080	}	1529	}
1081		1530
1082	inline void	1531	void inline_size
1083	ev_stop (EV_P_ W w)	1532	ev_stop (EV_P_ W w)
1084	{	1533	{
1085	ev_unref (EV_A);	1534	ev_unref (EV_A);
1086	w->active = 0;	1535	w->active = 0;
1087	}	1536	}
1088		1537
1089	/*****************************************************************************/	1538	/*****************************************************************************/
1090		1539
1091	void	1540	void
1092	ev_io_start (EV_P_ struct ev_io *w)	1541	ev_io_start (EV_P_ ev_io *w)
1093	{	1542	{
1094	int fd = w->fd;	1543	int fd = w->fd;
1095		1544
1096	if (ev_is_active (w))	1545	if (expect_false (ev_is_active (w)))
1097	return;	1546	return;
1098		1547
1099	assert (("ev_io_start called with negative fd", fd >= 0));	1548	assert (("ev_io_start called with negative fd", fd >= 0));
1100		1549
1101	ev_start (EV_A_ (W)w, 1);	1550	ev_start (EV_A_ (W)w, 1);
1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1551	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1552	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104		1553
1105	fd_change (EV_A_ fd);	1554	fd_change (EV_A_ fd);
1106	}	1555	}
1107		1556
1108	void	1557	void
1109	ev_io_stop (EV_P_ struct ev_io *w)	1558	ev_io_stop (EV_P_ ev_io *w)
1110	{	1559	{
1111	ev_clear_pending (EV_A_ (W)w);	1560	ev_clear_pending (EV_A_ (W)w);
1112	if (!ev_is_active (w))	1561	if (expect_false (!ev_is_active (w)))
1113	return;	1562	return;
		1563
		1564	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1114		1565
1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1566	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1116	ev_stop (EV_A_ (W)w);	1567	ev_stop (EV_A_ (W)w);
1117		1568
1118	fd_change (EV_A_ w->fd);	1569	fd_change (EV_A_ w->fd);
1119	}	1570	}
1120		1571
1121	void	1572	void
1122	ev_timer_start (EV_P_ struct ev_timer *w)	1573	ev_timer_start (EV_P_ ev_timer *w)
1123	{	1574	{
1124	if (ev_is_active (w))	1575	if (expect_false (ev_is_active (w)))
1125	return;	1576	return;
1126		1577
1127	((WT)w)->at += mn_now;	1578	((WT)w)->at += mn_now;
1128		1579
1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1580	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130		1581
1131	ev_start (EV_A_ (W)w, ++timercnt);	1582	ev_start (EV_A_ (W)w, ++timercnt);
1132	array_needsize (timers, timermax, timercnt, );	1583	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1133	timers [timercnt - 1] = w;	1584	timers [timercnt - 1] = w;
1134	upheap ((WT *)timers, timercnt - 1);	1585	upheap ((WT *)timers, timercnt - 1);
1135		1586
		1587	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1588	}
		1589
		1590	void
		1591	ev_timer_stop (EV_P_ ev_timer *w)
		1592	{
		1593	ev_clear_pending (EV_A_ (W)w);
		1594	if (expect_false (!ev_is_active (w)))
		1595	return;
		1596
1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1597	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137	}
1138		1598
1139	void	1599	{
1140	ev_timer_stop (EV_P_ struct ev_timer *w)	1600	int active = ((W)w)->active;
1141	{
1142	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))
1144	return;
1145		1601
1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1602	if (expect_true (--active < --timercnt))
1147
1148	if (((W)w)->active < timercnt--)
1149	{	1603	{
1150	timers [((W)w)->active - 1] = timers [timercnt];	1604	timers [active] = timers [timercnt];
1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1605	adjustheap ((WT *)timers, timercnt, active);
1152	}	1606	}
		1607	}
1153		1608
1154	((WT)w)->at = w->repeat;	1609	((WT)w)->at -= mn_now;
1155		1610
1156	ev_stop (EV_A_ (W)w);	1611	ev_stop (EV_A_ (W)w);
1157	}	1612	}
1158		1613
1159	void	1614	void
1160	ev_timer_again (EV_P_ struct ev_timer *w)	1615	ev_timer_again (EV_P_ ev_timer *w)
1161	{	1616	{
1162	if (ev_is_active (w))	1617	if (ev_is_active (w))
1163	{	1618	{
1164	if (w->repeat)	1619	if (w->repeat)
1165	{	1620	{
1166	((WT)w)->at = mn_now + w->repeat;	1621	((WT)w)->at = mn_now + w->repeat;
1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1622	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1168	}	1623	}
1169	else	1624	else
1170	ev_timer_stop (EV_A_ w);	1625	ev_timer_stop (EV_A_ w);
1171	}	1626	}
1172	else if (w->repeat)	1627	else if (w->repeat)
		1628	{
		1629	w->at = w->repeat;
1173	ev_timer_start (EV_A_ w);	1630	ev_timer_start (EV_A_ w);
		1631	}
1174	}	1632	}
1175		1633
		1634	#if EV_PERIODIC_ENABLE
1176	void	1635	void
1177	ev_periodic_start (EV_P_ struct ev_periodic *w)	1636	ev_periodic_start (EV_P_ ev_periodic *w)
1178	{	1637	{
1179	if (ev_is_active (w))	1638	if (expect_false (ev_is_active (w)))
1180	return;	1639	return;
1181		1640
		1641	if (w->reschedule_cb)
		1642	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1643	else if (w->interval)
		1644	{
1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1645	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184	/* this formula differs from the one in periodic_reify because we do not always round up */	1646	/* this formula differs from the one in periodic_reify because we do not always round up */
1185	if (w->interval)
1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1647	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1648	}
1187		1649
1188	ev_start (EV_A_ (W)w, ++periodiccnt);	1650	ev_start (EV_A_ (W)w, ++periodiccnt);
1189	array_needsize (periodics, periodicmax, periodiccnt, );	1651	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1190	periodics [periodiccnt - 1] = w;	1652	periodics [periodiccnt - 1] = w;
1191	upheap ((WT *)periodics, periodiccnt - 1);	1653	upheap ((WT *)periodics, periodiccnt - 1);
1192		1654
		1655	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1656	}
		1657
		1658	void
		1659	ev_periodic_stop (EV_P_ ev_periodic *w)
		1660	{
		1661	ev_clear_pending (EV_A_ (W)w);
		1662	if (expect_false (!ev_is_active (w)))
		1663	return;
		1664
1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1665	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194	}
1195		1666
1196	void	1667	{
1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1668	int active = ((W)w)->active;
1198	{
1199	ev_clear_pending (EV_A_ (W)w);
1200	if (!ev_is_active (w))
1201	return;
1202		1669
1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1670	if (expect_true (--active < --periodiccnt))
1204
1205	if (((W)w)->active < periodiccnt--)
1206	{	1671	{
1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1672	periodics [active] = periodics [periodiccnt];
1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1673	adjustheap ((WT *)periodics, periodiccnt, active);
1209	}	1674	}
		1675	}
1210		1676
1211	ev_stop (EV_A_ (W)w);	1677	ev_stop (EV_A_ (W)w);
1212	}	1678	}
1213		1679
1214	void	1680	void
1215	ev_idle_start (EV_P_ struct ev_idle *w)	1681	ev_periodic_again (EV_P_ ev_periodic *w)
1216	{	1682	{
1217	if (ev_is_active (w))	1683	/* TODO: use adjustheap and recalculation */
1218	return;
1219
1220	ev_start (EV_A_ (W)w, ++idlecnt);
1221	array_needsize (idles, idlemax, idlecnt, );
1222	idles [idlecnt - 1] = w;
1223	}
1224
1225	void
1226	ev_idle_stop (EV_P_ struct ev_idle *w)
1227	{
1228	ev_clear_pending (EV_A_ (W)w);
1229	if (ev_is_active (w))
1230	return;
1231
1232	idles [((W)w)->active - 1] = idles [--idlecnt];
1233	ev_stop (EV_A_ (W)w);	1684	ev_periodic_stop (EV_A_ w);
		1685	ev_periodic_start (EV_A_ w);
1234	}	1686	}
1235		1687	#endif
1236	void
1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
1238	{
1239	if (ev_is_active (w))
1240	return;
1241
1242	ev_start (EV_A_ (W)w, ++preparecnt);
1243	array_needsize (prepares, preparemax, preparecnt, );
1244	prepares [preparecnt - 1] = w;
1245	}
1246
1247	void
1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249	{
1250	ev_clear_pending (EV_A_ (W)w);
1251	if (ev_is_active (w))
1252	return;
1253
1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255	ev_stop (EV_A_ (W)w);
1256	}
1257
1258	void
1259	ev_check_start (EV_P_ struct ev_check *w)
1260	{
1261	if (ev_is_active (w))
1262	return;
1263
1264	ev_start (EV_A_ (W)w, ++checkcnt);
1265	array_needsize (checks, checkmax, checkcnt, );
1266	checks [checkcnt - 1] = w;
1267	}
1268
1269	void
1270	ev_check_stop (EV_P_ struct ev_check *w)
1271	{
1272	ev_clear_pending (EV_A_ (W)w);
1273	if (ev_is_active (w))
1274	return;
1275
1276	checks [((W)w)->active - 1] = checks [--checkcnt];
1277	ev_stop (EV_A_ (W)w);
1278	}
1279		1688
1280	#ifndef SA_RESTART	1689	#ifndef SA_RESTART
1281	# define SA_RESTART 0	1690	# define SA_RESTART 0
1282	#endif	1691	#endif
1283		1692
1284	void	1693	void
1285	ev_signal_start (EV_P_ struct ev_signal *w)	1694	ev_signal_start (EV_P_ ev_signal *w)
1286	{	1695	{
1287	#if EV_MULTIPLICITY	1696	#if EV_MULTIPLICITY
1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1697	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1289	#endif	1698	#endif
1290	if (ev_is_active (w))	1699	if (expect_false (ev_is_active (w)))
1291	return;	1700	return;
1292		1701
1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1702	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294		1703
1295	ev_start (EV_A_ (W)w, 1);	1704	ev_start (EV_A_ (W)w, 1);
1296	array_needsize (signals, signalmax, w->signum, signals_init);	1705	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1706	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298		1707
1299	if (!((WL)w)->next)	1708	if (!((WL)w)->next)
1300	{	1709	{
		1710	#if _WIN32
		1711	signal (w->signum, sighandler);
		1712	#else
1301	struct sigaction sa;	1713	struct sigaction sa;
1302	sa.sa_handler = sighandler;	1714	sa.sa_handler = sighandler;
1303	sigfillset (&sa.sa_mask);	1715	sigfillset (&sa.sa_mask);
1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1716	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305	sigaction (w->signum, &sa, 0);	1717	sigaction (w->signum, &sa, 0);
		1718	#endif
1306	}	1719	}
1307	}	1720	}
1308		1721
1309	void	1722	void
1310	ev_signal_stop (EV_P_ struct ev_signal *w)	1723	ev_signal_stop (EV_P_ ev_signal *w)
1311	{	1724	{
1312	ev_clear_pending (EV_A_ (W)w);	1725	ev_clear_pending (EV_A_ (W)w);
1313	if (!ev_is_active (w))	1726	if (expect_false (!ev_is_active (w)))
1314	return;	1727	return;
1315		1728
1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1317	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1318		1731
1319	if (!signals [w->signum - 1].head)	1732	if (!signals [w->signum - 1].head)
1320	signal (w->signum, SIG_DFL);	1733	signal (w->signum, SIG_DFL);
1321	}	1734	}
1322		1735
1323	void	1736	void
1324	ev_child_start (EV_P_ struct ev_child *w)	1737	ev_child_start (EV_P_ ev_child *w)
1325	{	1738	{
1326	#if EV_MULTIPLICITY	1739	#if EV_MULTIPLICITY
1327	assert (("child watchers are only supported in the default loop", loop == default_loop));	1740	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1328	#endif	1741	#endif
1329	if (ev_is_active (w))	1742	if (expect_false (ev_is_active (w)))
1330	return;	1743	return;
1331		1744
1332	ev_start (EV_A_ (W)w, 1);	1745	ev_start (EV_A_ (W)w, 1);
1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1746	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1334	}	1747	}
1335		1748
1336	void	1749	void
1337	ev_child_stop (EV_P_ struct ev_child *w)	1750	ev_child_stop (EV_P_ ev_child *w)
1338	{	1751	{
1339	ev_clear_pending (EV_A_ (W)w);	1752	ev_clear_pending (EV_A_ (W)w);
1340	if (ev_is_active (w))	1753	if (expect_false (!ev_is_active (w)))
1341	return;	1754	return;
1342		1755
1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1756	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1344	ev_stop (EV_A_ (W)w);	1757	ev_stop (EV_A_ (W)w);
1345	}	1758	}
1346		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# undef lstat
		1764	# define lstat(a,b) _stati64 (a,b)
		1765	# endif
		1766
		1767	#define DEF_STAT_INTERVAL 5.0074891
		1768	#define MIN_STAT_INTERVAL 0.1074891
		1769
		1770	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1771
		1772	#if EV_USE_INOTIFY
		1773	# define EV_INOTIFY_BUFSIZE 8192
		1774
		1775	static void noinline
		1776	infy_add (EV_P_ ev_stat *w)
		1777	{
		1778	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);
		1779
		1780	if (w->wd < 0)
		1781	{
		1782	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1783
		1784	/* monitor some parent directory for speedup hints */
		1785	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1786	{
		1787	char path [4096];
		1788	strcpy (path, w->path);
		1789
		1790	do
		1791	{
		1792	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1793	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1794
		1795	char *pend = strrchr (path, '/');
		1796
		1797	if (!pend)
		1798	break; /* whoops, no '/', complain to your admin */
		1799
		1800	*pend = 0;
		1801	w->wd = inotify_add_watch (fs_fd, path, mask);
		1802	}
		1803	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1804	}
		1805	}
		1806	else
		1807	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1808
		1809	if (w->wd >= 0)
		1810	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1811	}
		1812
		1813	static void noinline
		1814	infy_del (EV_P_ ev_stat *w)
		1815	{
		1816	int slot;
		1817	int wd = w->wd;
		1818
		1819	if (wd < 0)
		1820	return;
		1821
		1822	w->wd = -2;
		1823	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1824	wlist_del (&fs_hash [slot].head, (WL)w);
		1825
		1826	/* remove this watcher, if others are watching it, they will rearm */
		1827	inotify_rm_watch (fs_fd, wd);
		1828	}
		1829
		1830	static void noinline
		1831	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1832	{
		1833	if (slot < 0)
		1834	/* overflow, need to check for all hahs slots */
		1835	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1836	infy_wd (EV_A_ slot, wd, ev);
		1837	else
		1838	{
		1839	WL w_;
		1840
		1841	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1842	{
		1843	ev_stat *w = (ev_stat *)w_;
		1844	w_ = w_->next; /* lets us remove this watcher and all before it */
		1845
		1846	if (w->wd == wd || wd == -1)
		1847	{
		1848	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1849	{
		1850	w->wd = -1;
		1851	infy_add (EV_A_ w); /* re-add, no matter what */
		1852	}
		1853
		1854	stat_timer_cb (EV_A_ &w->timer, 0);
		1855	}
		1856	}
		1857	}
		1858	}
		1859
		1860	static void
		1861	infy_cb (EV_P_ ev_io *w, int revents)
		1862	{
		1863	char buf [EV_INOTIFY_BUFSIZE];
		1864	struct inotify_event *ev = (struct inotify_event *)buf;
		1865	int ofs;
		1866	int len = read (fs_fd, buf, sizeof (buf));
		1867
		1868	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1869	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1870	}
		1871
		1872	void inline_size
		1873	infy_init (EV_P)
		1874	{
		1875	if (fs_fd != -2)
		1876	return;
		1877
		1878	fs_fd = inotify_init ();
		1879
		1880	if (fs_fd >= 0)
		1881	{
		1882	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1883	ev_set_priority (&fs_w, EV_MAXPRI);
		1884	ev_io_start (EV_A_ &fs_w);
		1885	}
		1886	}
		1887
		1888	void inline_size
		1889	infy_fork (EV_P)
		1890	{
		1891	int slot;
		1892
		1893	if (fs_fd < 0)
		1894	return;
		1895
		1896	close (fs_fd);
		1897	fs_fd = inotify_init ();
		1898
		1899	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1900	{
		1901	WL w_ = fs_hash [slot].head;
		1902	fs_hash [slot].head = 0;
		1903
		1904	while (w_)
		1905	{
		1906	ev_stat *w = (ev_stat *)w_;
		1907	w_ = w_->next; /* lets us add this watcher */
		1908
		1909	w->wd = -1;
		1910
		1911	if (fs_fd >= 0)
		1912	infy_add (EV_A_ w); /* re-add, no matter what */
		1913	else
		1914	ev_timer_start (EV_A_ &w->timer);
		1915	}
		1916
		1917	}
		1918	}
		1919
		1920	#endif
		1921
		1922	void
		1923	ev_stat_stat (EV_P_ ev_stat *w)
		1924	{
		1925	if (lstat (w->path, &w->attr) < 0)
		1926	w->attr.st_nlink = 0;
		1927	else if (!w->attr.st_nlink)
		1928	w->attr.st_nlink = 1;
		1929	}
		1930
		1931	static void noinline
		1932	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1933	{
		1934	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1935
		1936	/* we copy this here each the time so that */
		1937	/* prev has the old value when the callback gets invoked */
		1938	w->prev = w->attr;
		1939	ev_stat_stat (EV_A_ w);
		1940
		1941	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1942	if (
		1943	w->prev.st_dev != w->attr.st_dev
		1944	|| w->prev.st_ino != w->attr.st_ino
		1945	|| w->prev.st_mode != w->attr.st_mode
		1946	|| w->prev.st_nlink != w->attr.st_nlink
		1947	|| w->prev.st_uid != w->attr.st_uid
		1948	|| w->prev.st_gid != w->attr.st_gid
		1949	|| w->prev.st_rdev != w->attr.st_rdev
		1950	|| w->prev.st_size != w->attr.st_size
		1951	|| w->prev.st_atime != w->attr.st_atime
		1952	|| w->prev.st_mtime != w->attr.st_mtime
		1953	|| w->prev.st_ctime != w->attr.st_ctime
		1954	) {
		1955	#if EV_USE_INOTIFY
		1956	infy_del (EV_A_ w);
		1957	infy_add (EV_A_ w);
		1958	ev_stat_stat (EV_A_ w); /* avoid race... */
		1959	#endif
		1960
		1961	ev_feed_event (EV_A_ w, EV_STAT);
		1962	}
		1963	}
		1964
		1965	void
		1966	ev_stat_start (EV_P_ ev_stat *w)
		1967	{
		1968	if (expect_false (ev_is_active (w)))
		1969	return;
		1970
		1971	/* since we use memcmp, we need to clear any padding data etc. */
		1972	memset (&w->prev, 0, sizeof (ev_statdata));
		1973	memset (&w->attr, 0, sizeof (ev_statdata));
		1974
		1975	ev_stat_stat (EV_A_ w);
		1976
		1977	if (w->interval < MIN_STAT_INTERVAL)
		1978	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1979
		1980	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1981	ev_set_priority (&w->timer, ev_priority (w));
		1982
		1983	#if EV_USE_INOTIFY
		1984	infy_init (EV_A);
		1985
		1986	if (fs_fd >= 0)
		1987	infy_add (EV_A_ w);
		1988	else
		1989	#endif
		1990	ev_timer_start (EV_A_ &w->timer);
		1991
		1992	ev_start (EV_A_ (W)w, 1);
		1993	}
		1994
		1995	void
		1996	ev_stat_stop (EV_P_ ev_stat *w)
		1997	{
		1998	ev_clear_pending (EV_A_ (W)w);
		1999	if (expect_false (!ev_is_active (w)))
		2000	return;
		2001
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	#endif
		2005	ev_timer_stop (EV_A_ &w->timer);
		2006
		2007	ev_stop (EV_A_ (W)w);
		2008	}
		2009	#endif
		2010
		2011	void
		2012	ev_idle_start (EV_P_ ev_idle *w)
		2013	{
		2014	if (expect_false (ev_is_active (w)))
		2015	return;
		2016
		2017	ev_start (EV_A_ (W)w, ++idlecnt);
		2018	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		2019	idles [idlecnt - 1] = w;
		2020	}
		2021
		2022	void
		2023	ev_idle_stop (EV_P_ ev_idle *w)
		2024	{
		2025	ev_clear_pending (EV_A_ (W)w);
		2026	if (expect_false (!ev_is_active (w)))
		2027	return;
		2028
		2029	{
		2030	int active = ((W)w)->active;
		2031	idles [active - 1] = idles [--idlecnt];
		2032	((W)idles [active - 1])->active = active;
		2033	}
		2034
		2035	ev_stop (EV_A_ (W)w);
		2036	}
		2037
		2038	void
		2039	ev_prepare_start (EV_P_ ev_prepare *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	ev_start (EV_A_ (W)w, ++preparecnt);
		2045	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2046	prepares [preparecnt - 1] = w;
		2047	}
		2048
		2049	void
		2050	ev_prepare_stop (EV_P_ ev_prepare *w)
		2051	{
		2052	ev_clear_pending (EV_A_ (W)w);
		2053	if (expect_false (!ev_is_active (w)))
		2054	return;
		2055
		2056	{
		2057	int active = ((W)w)->active;
		2058	prepares [active - 1] = prepares [--preparecnt];
		2059	((W)prepares [active - 1])->active = active;
		2060	}
		2061
		2062	ev_stop (EV_A_ (W)w);
		2063	}
		2064
		2065	void
		2066	ev_check_start (EV_P_ ev_check *w)
		2067	{
		2068	if (expect_false (ev_is_active (w)))
		2069	return;
		2070
		2071	ev_start (EV_A_ (W)w, ++checkcnt);
		2072	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2073	checks [checkcnt - 1] = w;
		2074	}
		2075
		2076	void
		2077	ev_check_stop (EV_P_ ev_check *w)
		2078	{
		2079	ev_clear_pending (EV_A_ (W)w);
		2080	if (expect_false (!ev_is_active (w)))
		2081	return;
		2082
		2083	{
		2084	int active = ((W)w)->active;
		2085	checks [active - 1] = checks [--checkcnt];
		2086	((W)checks [active - 1])->active = active;
		2087	}
		2088
		2089	ev_stop (EV_A_ (W)w);
		2090	}
		2091
		2092	#if EV_EMBED_ENABLE
		2093	void noinline
		2094	ev_embed_sweep (EV_P_ ev_embed *w)
		2095	{
		2096	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2097	}
		2098
		2099	static void
		2100	embed_cb (EV_P_ ev_io *io, int revents)
		2101	{
		2102	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2103
		2104	if (ev_cb (w))
		2105	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2106	else
		2107	ev_embed_sweep (loop, w);
		2108	}
		2109
		2110	void
		2111	ev_embed_start (EV_P_ ev_embed *w)
		2112	{
		2113	if (expect_false (ev_is_active (w)))
		2114	return;
		2115
		2116	{
		2117	struct ev_loop *loop = w->loop;
		2118	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2119	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2120	}
		2121
		2122	ev_set_priority (&w->io, ev_priority (w));
		2123	ev_io_start (EV_A_ &w->io);
		2124
		2125	ev_start (EV_A_ (W)w, 1);
		2126	}
		2127
		2128	void
		2129	ev_embed_stop (EV_P_ ev_embed *w)
		2130	{
		2131	ev_clear_pending (EV_A_ (W)w);
		2132	if (expect_false (!ev_is_active (w)))
		2133	return;
		2134
		2135	ev_io_stop (EV_A_ &w->io);
		2136
		2137	ev_stop (EV_A_ (W)w);
		2138	}
		2139	#endif
		2140
		2141	#if EV_FORK_ENABLE
		2142	void
		2143	ev_fork_start (EV_P_ ev_fork *w)
		2144	{
		2145	if (expect_false (ev_is_active (w)))
		2146	return;
		2147
		2148	ev_start (EV_A_ (W)w, ++forkcnt);
		2149	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2150	forks [forkcnt - 1] = w;
		2151	}
		2152
		2153	void
		2154	ev_fork_stop (EV_P_ ev_fork *w)
		2155	{
		2156	ev_clear_pending (EV_A_ (W)w);
		2157	if (expect_false (!ev_is_active (w)))
		2158	return;
		2159
		2160	{
		2161	int active = ((W)w)->active;
		2162	forks [active - 1] = forks [--forkcnt];
		2163	((W)forks [active - 1])->active = active;
		2164	}
		2165
		2166	ev_stop (EV_A_ (W)w);
		2167	}
		2168	#endif
		2169
1347	/*****************************************************************************/	2170	/*****************************************************************************/
1348		2171
1349	struct ev_once	2172	struct ev_once
1350	{	2173	{
1351	struct ev_io io;	2174	ev_io io;
1352	struct ev_timer to;	2175	ev_timer to;
1353	void (*cb)(int revents, void *arg);	2176	void (*cb)(int revents, void *arg);
1354	void *arg;	2177	void *arg;
1355	};	2178	};
1356		2179
1357	static void	2180	static void
…		…
1360	void (*cb)(int revents, void *arg) = once->cb;	2183	void (*cb)(int revents, void *arg) = once->cb;
1361	void *arg = once->arg;	2184	void *arg = once->arg;
1362		2185
1363	ev_io_stop (EV_A_ &once->io);	2186	ev_io_stop (EV_A_ &once->io);
1364	ev_timer_stop (EV_A_ &once->to);	2187	ev_timer_stop (EV_A_ &once->to);
1365	free (once);	2188	ev_free (once);
1366		2189
1367	cb (revents, arg);	2190	cb (revents, arg);
1368	}	2191	}
1369		2192
1370	static void	2193	static void
1371	once_cb_io (EV_P_ struct ev_io *w, int revents)	2194	once_cb_io (EV_P_ ev_io *w, int revents)
1372	{	2195	{
1373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2196	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1374	}	2197	}
1375		2198
1376	static void	2199	static void
1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2200	once_cb_to (EV_P_ ev_timer *w, int revents)
1378	{	2201	{
1379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2202	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1380	}	2203	}
1381		2204
1382	void	2205	void
1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2206	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1384	{	2207	{
1385	struct ev_once *once = malloc (sizeof (struct ev_once));	2208	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1386		2209
1387	if (!once)	2210	if (expect_false (!once))
		2211	{
1388	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2212	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1389	else	2213	return;
1390	{	2214	}
		2215
1391	once->cb = cb;	2216	once->cb = cb;
1392	once->arg = arg;	2217	once->arg = arg;
1393		2218
1394	ev_watcher_init (&once->io, once_cb_io);	2219	ev_init (&once->io, once_cb_io);
1395	if (fd >= 0)	2220	if (fd >= 0)
1396	{	2221	{
1397	ev_io_set (&once->io, fd, events);	2222	ev_io_set (&once->io, fd, events);
1398	ev_io_start (EV_A_ &once->io);	2223	ev_io_start (EV_A_ &once->io);
1399	}	2224	}
1400		2225
1401	ev_watcher_init (&once->to, once_cb_to);	2226	ev_init (&once->to, once_cb_to);
1402	if (timeout >= 0.)	2227	if (timeout >= 0.)
1403	{	2228	{
1404	ev_timer_set (&once->to, timeout, 0.);	2229	ev_timer_set (&once->to, timeout, 0.);
1405	ev_timer_start (EV_A_ &once->to);	2230	ev_timer_start (EV_A_ &once->to);
1406	}
1407	}	2231	}
1408	}	2232	}
1409		2233
		2234	#ifdef __cplusplus
		2235	}
		2236	#endif
		2237

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