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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.162 by root, Mon Dec 3 13:41:24 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_USE_POLL	155	#ifndef EV_USE_POLL
64	# 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
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)->priority - EV_MINPRI)
113		247
		248	#define EMPTY0 /* 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 ev_tstamp now_floor, now, diff; /* monotonic clock */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
		261	/*****************************************************************************/
		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
		313	typedef struct
		314	{
		315	WL head;
		316	unsigned char events;
		317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
		321	} ANFD;
		322
		323	typedef struct
		324	{
		325	W w;
		326	int events;
		327	} ANPENDING;
		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
		336	#if EV_MULTIPLICITY
		337
		338	struct ev_loop
		339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
		342	#define VAR(name,decl) decl;
		343	#include "ev_vars.h"
		344	#undef VAR
		345	};
		346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
		350
		351	#else
		352
119	ev_tstamp ev_now;	353	ev_tstamp ev_rt_now;
120	int ev_method;	354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
121		357
122	static int have_monotonic; /* runtime */	358	static int ev_default_loop_ptr;
123		359
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	360	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		361
128	/*****************************************************************************/	362	/*****************************************************************************/
129		363
130	ev_tstamp	364	ev_tstamp
131	ev_time (void)	365	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	375	#endif
142	}	376	}
143		377
144	static ev_tstamp	378	ev_tstamp inline_size
145	get_clock (void)	379	get_clock (void)
146	{	380	{
147	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
149	{	383	{
…		…
154	#endif	388	#endif
155		389
156	return ev_time ();	390	return ev_time ();
157	}	391	}
158		392
		393	#if EV_MULTIPLICITY
		394	ev_tstamp
		395	ev_now (EV_P)
		396	{
		397	return ev_rt_now;
		398	}
		399	#endif
		400
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
160		402
161	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
163	{ \	405	{ \
164	int newcnt = cur; \	406	int newcnt = cur; \
165	do \	407	do \
166	{ \	408	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	410	} \
169	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
170	\	412	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	415	cur = newcnt; \
174	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		428
176	/*****************************************************************************/	429	/*****************************************************************************/
177		430
178	typedef struct	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
179	{	433	{
180	struct ev_watcher_list *head;	434	W w_ = (W)w;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184		435
185	static ANFD *anfds;	436	if (expect_false (w_->pending))
186	static int anfdmax;	437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
187		441
188	static void	442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
189	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
190	{	461	{
191	while (count--)	462	while (count--)
192	{	463	{
193	base->head = 0;	464	base->head = 0;
…		…
196		467
197	++base;	468	++base;
198	}	469	}
199	}	470	}
200		471
201	typedef struct	472	void inline_speed
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;
217	}
218
219	w->pending = ++pendingcnt [ABSPRI (w)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
221	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}
224
225	static void
226	queue_events (W *events, int eventcnt, int type)
227	{
228	int i;
229
230	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);
232	}
233
234	static void
235	fd_event (int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
236	{	474	{
237	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	476	ev_io *w;
239		477
240	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
241	{	479	{
242	int ev = w->events & events;	480	int ev = w->events & revents;
243		481
244	if (ev)	482	if (ev)
245	event ((W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
246	}	484	}
247	}	485	}
248		486
249	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
250		492
251	static int *fdchanges;	493	void inline_size
252	static int fdchangemax, fdchangecnt;	494	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	495	{
257	int i;	496	int i;
258		497
259	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
260	{	499	{
261	int fd = fdchanges [i];	500	int fd = fdchanges [i];
262	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	502	ev_io *w;
264		503
265	int events = 0;	504	int events = 0;
266		505
267	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
268	events |= w->events;	507	events |= w->events;
269		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
270	anfd->reify = 0;	518	anfd->reify = 0;
271		519
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	521	anfd->events = events;
276	}
277	}	522	}
278		523
279	fdchangecnt = 0;	524	fdchangecnt = 0;
280	}	525	}
281		526
282	static void	527	void inline_size
283	fd_change (int fd)	528	fd_change (EV_P_ int fd)
284	{	529	{
285	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
286	return;	531	return;
287		532
288	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
289		534
290	++fdchangecnt;	535	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
293	}	538	}
294		539
295	static void	540	void inline_speed
296	fd_kill (int fd)	541	fd_kill (EV_P_ int fd)
297	{	542	{
298	struct ev_io *w;	543	ev_io *w;
299		544
300	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
301	{	546	{
302	ev_io_stop (w);	547	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
305	}	560	}
306		561
307	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
308	static void	563	static void noinline
309	fd_ebadf (void)	564	fd_ebadf (EV_P)
310	{	565	{
311	int fd;	566	int fd;
312		567
313	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	569	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
316	fd_kill (fd);	571	fd_kill (EV_A_ fd);
317	}	572	}
318		573
319	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
320	static void	575	static void noinline
321	fd_enomem (void)	576	fd_enomem (EV_P)
322	{	577	{
323	int fd = anfdmax;	578	int fd;
324		579
325	while (fd--)	580	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	581	if (anfds [fd].events)
327	{	582	{
328	close (fd);
329	fd_kill (fd);	583	fd_kill (EV_A_ fd);
330	return;	584	return;
331	}	585	}
332	}	586	}
333		587
		588	/* usually called after fork if backend needs to re-arm all fds from scratch */
		589	static void noinline
		590	fd_rearm_all (EV_P)
		591	{
		592	int fd;
		593
		594	for (fd = 0; fd < anfdmax; ++fd)
		595	if (anfds [fd].events)
		596	{
		597	anfds [fd].events = 0;
		598	fd_change (EV_A_ fd);
		599	}
		600	}
		601
334	/*****************************************************************************/	602	/*****************************************************************************/
335		603
336	static struct ev_timer **timers;	604	void inline_speed
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void
343	upheap (WT *timers, int k)	605	upheap (WT *heap, int k)
344	{	606	{
345	WT w = timers [k];	607	WT w = heap [k];
346		608
347	while (k && timers [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
348	{	610	{
349	timers [k] = timers [k >> 1];	611	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	612	((W)heap [k])->active = k + 1;
351	k >>= 1;	613	k >>= 1;
352	}	614	}
353		615
354	timers [k] = w;	616	heap [k] = w;
355	timers [k]->active = k + 1;	617	((W)heap [k])->active = k + 1;
356		618
357	}	619	}
358		620
359	static void	621	void inline_speed
360	downheap (WT *timers, int N, int k)	622	downheap (WT *heap, int N, int k)
361	{	623	{
362	WT w = timers [k];	624	WT w = heap [k];
363		625
364	while (k < (N >> 1))	626	while (k < (N >> 1))
365	{	627	{
366	int j = k << 1;	628	int j = k << 1;
367		629
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	631	++j;
370		632
371	if (w->at <= timers [j]->at)	633	if (w->at <= heap [j]->at)
372	break;	634	break;
373		635
374	timers [k] = timers [j];	636	heap [k] = heap [j];
375	timers [k]->active = k + 1;	637	((W)heap [k])->active = k + 1;
376	k = j;	638	k = j;
377	}	639	}
378		640
379	timers [k] = w;	641	heap [k] = w;
380	timers [k]->active = k + 1;	642	((W)heap [k])->active = k + 1;
		643	}
		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
381	}	650	}
382		651
383	/*****************************************************************************/	652	/*****************************************************************************/
384		653
385	typedef struct	654	typedef struct
386	{	655	{
387	struct ev_watcher_list *head;	656	WL head;
388	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
389	} ANSIG;	658	} ANSIG;
390		659
391	static ANSIG *signals;	660	static ANSIG *signals;
392	static int signalmax;	661	static int signalmax;
393		662
394	static int sigpipe [2];	663	static int sigpipe [2];
395	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
396	static struct ev_io sigev;	665	static ev_io sigev;
397		666
398	static void	667	void inline_size
399	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
400	{	669	{
401	while (count--)	670	while (count--)
402	{	671	{
403	base->head = 0;	672	base->head = 0;
…		…
408	}	677	}
409		678
410	static void	679	static void
411	sighandler (int signum)	680	sighandler (int signum)
412	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
413	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
414		687
415	if (!gotsig)	688	if (!gotsig)
416	{	689	{
417	int old_errno = errno;	690	int old_errno = errno;
…		…
419	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
420	errno = old_errno;	693	errno = old_errno;
421	}	694	}
422	}	695	}
423		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
424	static void	717	static void
425	sigcb (struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
426	{	719	{
427	struct ev_watcher_list *w;
428	int signum;	720	int signum;
429		721
430	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
431	gotsig = 0;	723	gotsig = 0;
432		724
433	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
434	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
		727	ev_feed_signal_event (EV_A_ signum + 1);
		728	}
		729
		730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
		743	siginit (EV_P)
		744	{
		745	fd_intern (sigpipe [0]);
		746	fd_intern (sigpipe [1]);
		747
		748	ev_io_set (&sigev, sigpipe [0], EV_READ);
		749	ev_io_start (EV_A_ &sigev);
		750	ev_unref (EV_A); /* child watcher should not keep loop alive */
		751	}
		752
		753	/*****************************************************************************/
		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
		757	#ifndef _WIN32
		758
		759	static ev_signal childev;
		760
		761	void inline_speed
		762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		763	{
		764	ev_child *w;
		765
		766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		767	if (w->pid == pid || !w->pid)
435	{	768	{
436	signals [signum].gotsig = 0;	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
437		770	w->rpid = pid;
438	for (w = signals [signum].head; w; w = w->next)	771	w->rstatus = status;
439	event ((W)w, EV_SIGNAL);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
440	}	773	}
441	}	774	}
442
443	static void
444	siginit (void)
445	{
446	#ifndef WIN32
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449
450	/* rather than sort out wether we really need nb, set it */
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif
454
455	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);
457	}
458
459	/*****************************************************************************/
460
461	static struct ev_idle **idles;
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471
472	static struct ev_child *childs [PID_HASHSIZE];
473	static struct ev_signal childev;
474
475	#ifndef WIN32
476		775
477	#ifndef WCONTINUED	776	#ifndef WCONTINUED
478	# define WCONTINUED 0	777	# define WCONTINUED 0
479	#endif	778	#endif
480		779
481	static void	780	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)
483	{
484	struct ev_child *w;
485
486	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487	if (w->pid == pid || !w->pid)
488	{
489	w->priority = sw->priority; /* need to do it *now* */
490	w->rpid = pid;
491	w->rstatus = status;
492	event ((W)w, EV_CHILD);
493	}
494	}
495
496	static void
497	childcb (struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
498	{	782	{
499	int pid, status;	783	int pid, status;
500		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
501	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
503	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
504	event ((W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
505		795
506	child_reap (sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
508	}
509	}	799	}
510		800
511	#endif	801	#endif
512		802
513	/*****************************************************************************/	803	/*****************************************************************************/
514		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
515	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
516	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
517	#endif	810	#endif
518	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
519	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
536	{	829	{
537	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
538	}	831	}
539		832
540	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	834	int inline_size
542	enable_secure ()	835	enable_secure (void)
543	{	836	{
544	#ifdef WIN32	837	#ifdef _WIN32
545	return 0;	838	return 0;
546	#else	839	#else
547	return getuid () != geteuid ()	840	return getuid () != geteuid ()
548	|| getgid () != getegid ();	841	|| getgid () != getegid ();
549	#endif	842	#endif
550	}	843	}
551		844
552	int ev_init (int methods)	845	unsigned int
		846	ev_supported_backends (void)
553	{	847	{
554	if (!ev_method)	848	unsigned int flags = 0;
		849
		850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
		861	{
		862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	unsigned int
		892	ev_loop_count (EV_P)
		893	{
		894	return loop_count;
		895	}
		896
		897	static void noinline
		898	loop_init (EV_P_ unsigned int flags)
		899	{
		900	if (!backend)
555	{	901	{
556	#if EV_USE_MONOTONIC	902	#if EV_USE_MONOTONIC
557	{	903	{
558	struct timespec ts;	904	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	905	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	906	have_monotonic = 1;
561	}	907	}
562	#endif	908	#endif
563		909
564	ev_now = ev_time ();	910	ev_rt_now = ev_time ();
565	now = get_clock ();	911	mn_now = get_clock ();
566	now_floor = now;	912	now_floor = mn_now;
567	diff = ev_now - now;	913	rtmn_diff = ev_rt_now - mn_now;
568		914
569	if (pipe (sigpipe))	915	/* pid check not overridable via env */
570	return 0;	916	#ifndef _WIN32
		917	if (flags & EVFLAG_FORKCHECK)
		918	curpid = getpid ();
		919	#endif
571		920
572	if (methods == EVMETHOD_AUTO)	921	if (!(flags & EVFLAG_NOENV)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))	922	&& !enable_secure ()
		923	&& getenv ("LIBEV_FLAGS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	924	flags = atoi (getenv ("LIBEV_FLAGS"));
575	else
576	methods = EVMETHOD_ANY;
577		925
578	ev_method = 0;	926	if (!(flags & 0x0000ffffUL))
		927	flags |= ev_recommended_backends ();
		928
		929	backend = 0;
		930	backend_fd = -1;
		931	#if EV_USE_INOTIFY
		932	fs_fd = -2;
		933	#endif
		934
		935	#if EV_USE_PORT
		936	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		937	#endif
579	#if EV_USE_KQUEUE	938	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	939	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
581	#endif	940	#endif
582	#if EV_USE_EPOLL	941	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	942	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
584	#endif	943	#endif
585	#if EV_USE_POLL	944	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	945	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
587	#endif	946	#endif
588	#if EV_USE_SELECT	947	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	948	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
590	#endif	949	#endif
591		950
592	if (ev_method)	951	ev_init (&sigev, sigcb);
		952	ev_set_priority (&sigev, EV_MAXPRI);
		953	}
		954	}
		955
		956	static void noinline
		957	loop_destroy (EV_P)
		958	{
		959	int i;
		960
		961	#if EV_USE_INOTIFY
		962	if (fs_fd >= 0)
		963	close (fs_fd);
		964	#endif
		965
		966	if (backend_fd >= 0)
		967	close (backend_fd);
		968
		969	#if EV_USE_PORT
		970	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		971	#endif
		972	#if EV_USE_KQUEUE
		973	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		974	#endif
		975	#if EV_USE_EPOLL
		976	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		977	#endif
		978	#if EV_USE_POLL
		979	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		980	#endif
		981	#if EV_USE_SELECT
		982	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		983	#endif
		984
		985	for (i = NUMPRI; i--; )
		986	array_free (pending, [i]);
		987
		988	/* have to use the microsoft-never-gets-it-right macro */
		989	array_free (fdchange, EMPTY0);
		990	array_free (timer, EMPTY0);
		991	#if EV_PERIODIC_ENABLE
		992	array_free (periodic, EMPTY0);
		993	#endif
		994	array_free (idle, EMPTY0);
		995	array_free (prepare, EMPTY0);
		996	array_free (check, EMPTY0);
		997
		998	backend = 0;
		999	}
		1000
		1001	void inline_size infy_fork (EV_P);
		1002
		1003	void inline_size
		1004	loop_fork (EV_P)
		1005	{
		1006	#if EV_USE_PORT
		1007	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1008	#endif
		1009	#if EV_USE_KQUEUE
		1010	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1011	#endif
		1012	#if EV_USE_EPOLL
		1013	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1014	#endif
		1015	#if EV_USE_INOTIFY
		1016	infy_fork (EV_A);
		1017	#endif
		1018
		1019	if (ev_is_active (&sigev))
		1020	{
		1021	/* default loop */
		1022
		1023	ev_ref (EV_A);
		1024	ev_io_stop (EV_A_ &sigev);
		1025	close (sigpipe [0]);
		1026	close (sigpipe [1]);
		1027
		1028	while (pipe (sigpipe))
		1029	syserr ("(libev) error creating pipe");
		1030
		1031	siginit (EV_A);
		1032	}
		1033
		1034	postfork = 0;
		1035	}
		1036
		1037	#if EV_MULTIPLICITY
		1038	struct ev_loop *
		1039	ev_loop_new (unsigned int flags)
		1040	{
		1041	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1042
		1043	memset (loop, 0, sizeof (struct ev_loop));
		1044
		1045	loop_init (EV_A_ flags);
		1046
		1047	if (ev_backend (EV_A))
		1048	return loop;
		1049
		1050	return 0;
		1051	}
		1052
		1053	void
		1054	ev_loop_destroy (EV_P)
		1055	{
		1056	loop_destroy (EV_A);
		1057	ev_free (loop);
		1058	}
		1059
		1060	void
		1061	ev_loop_fork (EV_P)
		1062	{
		1063	postfork = 1;
		1064	}
		1065
		1066	#endif
		1067
		1068	#if EV_MULTIPLICITY
		1069	struct ev_loop *
		1070	ev_default_loop_init (unsigned int flags)
		1071	#else
		1072	int
		1073	ev_default_loop (unsigned int flags)
		1074	#endif
		1075	{
		1076	if (sigpipe [0] == sigpipe [1])
		1077	if (pipe (sigpipe))
		1078	return 0;
		1079
		1080	if (!ev_default_loop_ptr)
		1081	{
		1082	#if EV_MULTIPLICITY
		1083	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1084	#else
		1085	ev_default_loop_ptr = 1;
		1086	#endif
		1087
		1088	loop_init (EV_A_ flags);
		1089
		1090	if (ev_backend (EV_A))
593	{	1091	{
594	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	1092	siginit (EV_A);
597		1093
598	#ifndef WIN32	1094	#ifndef _WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	1095	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	1096	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	1097	ev_signal_start (EV_A_ &childev);
		1098	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	1099	#endif
603	}	1100	}
		1101	else
		1102	ev_default_loop_ptr = 0;
604	}	1103	}
605		1104
606	return ev_method;	1105	return ev_default_loop_ptr;
		1106	}
		1107
		1108	void
		1109	ev_default_destroy (void)
		1110	{
		1111	#if EV_MULTIPLICITY
		1112	struct ev_loop *loop = ev_default_loop_ptr;
		1113	#endif
		1114
		1115	#ifndef _WIN32
		1116	ev_ref (EV_A); /* child watcher */
		1117	ev_signal_stop (EV_A_ &childev);
		1118	#endif
		1119
		1120	ev_ref (EV_A); /* signal watcher */
		1121	ev_io_stop (EV_A_ &sigev);
		1122
		1123	close (sigpipe [0]); sigpipe [0] = 0;
		1124	close (sigpipe [1]); sigpipe [1] = 0;
		1125
		1126	loop_destroy (EV_A);
		1127	}
		1128
		1129	void
		1130	ev_default_fork (void)
		1131	{
		1132	#if EV_MULTIPLICITY
		1133	struct ev_loop *loop = ev_default_loop_ptr;
		1134	#endif
		1135
		1136	if (backend)
		1137	postfork = 1;
607	}	1138	}
608		1139
609	/*****************************************************************************/	1140	/*****************************************************************************/
610		1141
611	void	1142	int inline_size
612	ev_fork_prepare (void)	1143	any_pending (EV_P)
613	{	1144	{
614	/* nop */	1145	int pri;
615	}
616		1146
617	void	1147	for (pri = NUMPRI; pri--; )
618	ev_fork_parent (void)	1148	if (pendingcnt [pri])
619	{	1149	return 1;
620	/* nop */
621	}
622		1150
623	void	1151	return 0;
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif
630
631	ev_io_stop (&sigev);
632	close (sigpipe [0]);
633	close (sigpipe [1]);
634	pipe (sigpipe);
635	siginit ();
636	}	1152	}
637		1153
638	/*****************************************************************************/	1154	void inline_speed
639
640	static void
641	call_pending (void)	1155	call_pending (EV_P)
642	{	1156	{
643	int pri;	1157	int pri;
644		1158
645	for (pri = NUMPRI; pri--; )	1159	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	1160	while (pendingcnt [pri])
647	{	1161	{
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1162	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		1163
650	if (p->w)	1164	if (expect_true (p->w))
651	{	1165	{
		1166	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1167
652	p->w->pending = 0;	1168	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	1169	EV_CB_INVOKE (p->w, p->events);
654	}	1170	}
655	}	1171	}
656	}	1172	}
657		1173
658	static void	1174	void inline_size
659	timers_reify (void)	1175	timers_reify (EV_P)
660	{	1176	{
661	while (timercnt && timers [0]->at <= now)	1177	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	1178	{
663	struct ev_timer *w = timers [0];	1179	ev_timer *w = timers [0];
		1180
		1181	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
664		1182
665	/* first reschedule or stop timer */	1183	/* first reschedule or stop timer */
666	if (w->repeat)	1184	if (w->repeat)
667	{	1185	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1186	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1187
669	w->at = now + w->repeat;	1188	((WT)w)->at += w->repeat;
		1189	if (((WT)w)->at < mn_now)
		1190	((WT)w)->at = mn_now;
		1191
670	downheap ((WT *)timers, timercnt, 0);	1192	downheap ((WT *)timers, timercnt, 0);
671	}	1193	}
672	else	1194	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	1195	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1196
675	event ((W)w, EV_TIMEOUT);	1197	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
676	}	1198	}
677	}	1199	}
678		1200
679	static void	1201	#if EV_PERIODIC_ENABLE
		1202	void inline_size
680	periodics_reify (void)	1203	periodics_reify (EV_P)
681	{	1204	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	1205	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
683	{	1206	{
684	struct ev_periodic *w = periodics [0];	1207	ev_periodic *w = periodics [0];
		1208
		1209	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
685		1210
686	/* first reschedule or stop timer */	1211	/* first reschedule or stop timer */
687	if (w->interval)	1212	if (w->reschedule_cb)
688	{	1213	{
		1214	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1215	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1216	downheap ((WT *)periodics, periodiccnt, 0);
		1217	}
		1218	else if (w->interval)
		1219	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1220	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1221	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	1222	downheap ((WT *)periodics, periodiccnt, 0);
692	}	1223	}
693	else	1224	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	1225	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		1226
696	event ((W)w, EV_PERIODIC);	1227	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
697	}	1228	}
698	}	1229	}
699		1230
700	static void	1231	static void noinline
701	periodics_reschedule (ev_tstamp diff)	1232	periodics_reschedule (EV_P)
702	{	1233	{
703	int i;	1234	int i;
704		1235
705	/* adjust periodics after time jump */	1236	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	1237	for (i = 0; i < periodiccnt; ++i)
707	{	1238	{
708	struct ev_periodic *w = periodics [i];	1239	ev_periodic *w = periodics [i];
709		1240
		1241	if (w->reschedule_cb)
		1242	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
710	if (w->interval)	1243	else if (w->interval)
711	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1244	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
713
714	if (fabs (diff) >= 1e-4)
715	{
716	ev_periodic_stop (w);
717	ev_periodic_start (w);
718
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}
721	}
722	}	1245	}
723	}
724		1246
725	static int	1247	/* now rebuild the heap */
		1248	for (i = periodiccnt >> 1; i--; )
		1249	downheap ((WT *)periodics, periodiccnt, i);
		1250	}
		1251	#endif
		1252
		1253	int inline_size
726	time_update_monotonic (void)	1254	time_update_monotonic (EV_P)
727	{	1255	{
728	now = get_clock ();	1256	mn_now = get_clock ();
729		1257
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1258	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	1259	{
732	ev_now = now + diff;	1260	ev_rt_now = rtmn_diff + mn_now;
733	return 0;	1261	return 0;
734	}	1262	}
735	else	1263	else
736	{	1264	{
737	now_floor = now;	1265	now_floor = mn_now;
738	ev_now = ev_time ();	1266	ev_rt_now = ev_time ();
739	return 1;	1267	return 1;
740	}	1268	}
741	}	1269	}
742		1270
743	static void	1271	void inline_size
744	time_update (void)	1272	time_update (EV_P)
745	{	1273	{
746	int i;	1274	int i;
747		1275
748	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	1277	if (expect_true (have_monotonic))
750	{	1278	{
751	if (time_update_monotonic ())	1279	if (time_update_monotonic (EV_A))
752	{	1280	{
753	ev_tstamp odiff = diff;	1281	ev_tstamp odiff = rtmn_diff;
754		1282
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1283	/* loop a few times, before making important decisions.
		1284	* on the choice of "4": one iteration isn't enough,
		1285	* in case we get preempted during the calls to
		1286	* ev_time and get_clock. a second call is almost guaranteed
		1287	* to succeed in that case, though. and looping a few more times
		1288	* doesn't hurt either as we only do this on time-jumps or
		1289	* in the unlikely event of having been preempted here.
		1290	*/
		1291	for (i = 4; --i; )
756	{	1292	{
757	diff = ev_now - now;	1293	rtmn_diff = ev_rt_now - mn_now;
758		1294
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1295	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	1296	return; /* all is well */
761		1297
762	ev_now = ev_time ();	1298	ev_rt_now = ev_time ();
763	now = get_clock ();	1299	mn_now = get_clock ();
764	now_floor = now;	1300	now_floor = mn_now;
765	}	1301	}
766		1302
		1303	# if EV_PERIODIC_ENABLE
767	periodics_reschedule (diff - odiff);	1304	periodics_reschedule (EV_A);
		1305	# endif
768	/* no timer adjustment, as the monotonic clock doesn't jump */	1306	/* no timer adjustment, as the monotonic clock doesn't jump */
		1307	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	1308	}
770	}	1309	}
771	else	1310	else
772	#endif	1311	#endif
773	{	1312	{
774	ev_now = ev_time ();	1313	ev_rt_now = ev_time ();
775		1314
776	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1315	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	1316	{
		1317	#if EV_PERIODIC_ENABLE
778	periodics_reschedule (ev_now - now);	1318	periodics_reschedule (EV_A);
		1319	#endif
779		1320
780	/* adjust timers. this is easy, as the offset is the same for all */	1321	/* adjust timers. this is easy, as the offset is the same for all of them */
781	for (i = 0; i < timercnt; ++i)	1322	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	1323	((WT)timers [i])->at += ev_rt_now - mn_now;
783	}	1324	}
784		1325
785	now = ev_now;	1326	mn_now = ev_rt_now;
786	}	1327	}
787	}	1328	}
788		1329
789	int ev_loop_done;	1330	void
		1331	ev_ref (EV_P)
		1332	{
		1333	++activecnt;
		1334	}
790		1335
		1336	void
		1337	ev_unref (EV_P)
		1338	{
		1339	--activecnt;
		1340	}
		1341
		1342	static int loop_done;
		1343
		1344	void
791	void ev_loop (int flags)	1345	ev_loop (EV_P_ int flags)
792	{	1346	{
793	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1347	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1348	? EVUNLOOP_ONE
		1349	: EVUNLOOP_CANCEL;
		1350
		1351	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
795		1352
796	do	1353	do
797	{	1354	{
		1355	#ifndef _WIN32
		1356	if (expect_false (curpid)) /* penalise the forking check even more */
		1357	if (expect_false (getpid () != curpid))
		1358	{
		1359	curpid = getpid ();
		1360	postfork = 1;
		1361	}
		1362	#endif
		1363
		1364	#if EV_FORK_ENABLE
		1365	/* we might have forked, so queue fork handlers */
		1366	if (expect_false (postfork))
		1367	if (forkcnt)
		1368	{
		1369	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1370	call_pending (EV_A);
		1371	}
		1372	#endif
		1373
798	/* queue check watchers (and execute them) */	1374	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	1375	if (expect_false (preparecnt))
800	{	1376	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1377	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	1378	call_pending (EV_A);
803	}	1379	}
804		1380
		1381	if (expect_false (!activecnt))
		1382	break;
		1383
		1384	/* we might have forked, so reify kernel state if necessary */
		1385	if (expect_false (postfork))
		1386	loop_fork (EV_A);
		1387
805	/* update fd-related kernel structures */	1388	/* update fd-related kernel structures */
806	fd_reify ();	1389	fd_reify (EV_A);
807		1390
808	/* calculate blocking time */	1391	/* calculate blocking time */
		1392	{
		1393	ev_tstamp block;
809		1394
810	/* we only need this for !monotonic clockor timers, but as we basically	1395	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
811	always have timers, we just calculate it always */	1396	block = 0.; /* do not block at all */
		1397	else
		1398	{
		1399	/* update time to cancel out callback processing overhead */
812	#if EV_USE_MONOTONIC	1400	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	1401	if (expect_true (have_monotonic))
814	time_update_monotonic ();	1402	time_update_monotonic (EV_A);
815	else	1403	else
816	#endif	1404	#endif
817	{	1405	{
818	ev_now = ev_time ();	1406	ev_rt_now = ev_time ();
819	now = ev_now;	1407	mn_now = ev_rt_now;
820	}	1408	}
821		1409
822	if (flags & EVLOOP_NONBLOCK || idlecnt)
823	block = 0.;
824	else
825	{
826	block = MAX_BLOCKTIME;	1410	block = MAX_BLOCKTIME;
827		1411
828	if (timercnt)	1412	if (timercnt)
829	{	1413	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1414	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
831	if (block > to) block = to;	1415	if (block > to) block = to;
832	}	1416	}
833		1417
		1418	#if EV_PERIODIC_ENABLE
834	if (periodiccnt)	1419	if (periodiccnt)
835	{	1420	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1421	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
837	if (block > to) block = to;	1422	if (block > to) block = to;
838	}	1423	}
		1424	#endif
839		1425
840	if (block < 0.) block = 0.;	1426	if (expect_false (block < 0.)) block = 0.;
841	}	1427	}
842		1428
843	method_poll (block);	1429	++loop_count;
		1430	backend_poll (EV_A_ block);
		1431	}
844		1432
845	/* update ev_now, do magic */	1433	/* update ev_rt_now, do magic */
846	time_update ();	1434	time_update (EV_A);
847		1435
848	/* queue pending timers and reschedule them */	1436	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1437	timers_reify (EV_A); /* relative timers called last */
		1438	#if EV_PERIODIC_ENABLE
850	periodics_reify (); /* absolute timers called first */	1439	periodics_reify (EV_A); /* absolute timers called first */
		1440	#endif
851		1441
852	/* queue idle watchers unless io or timers are pending */	1442	/* queue idle watchers unless other events are pending */
853	if (!pendingcnt)	1443	if (idlecnt && !any_pending (EV_A))
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1444	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1445
856	/* queue check watchers, to be executed first */	1446	/* queue check watchers, to be executed first */
857	if (checkcnt)	1447	if (expect_false (checkcnt))
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1448	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1449
860	call_pending ();	1450	call_pending (EV_A);
861	}
862	while (!ev_loop_done);
863		1451
864	if (ev_loop_done != 2)	1452	}
		1453	while (expect_true (activecnt && !loop_done));
		1454
		1455	if (loop_done == EVUNLOOP_ONE)
		1456	loop_done = EVUNLOOP_CANCEL;
		1457	}
		1458
		1459	void
		1460	ev_unloop (EV_P_ int how)
		1461	{
865	ev_loop_done = 0;	1462	loop_done = how;
866	}	1463	}
867		1464
868	/*****************************************************************************/	1465	/*****************************************************************************/
869		1466
870	static void	1467	void inline_size
871	wlist_add (WL *head, WL elem)	1468	wlist_add (WL *head, WL elem)
872	{	1469	{
873	elem->next = *head;	1470	elem->next = *head;
874	*head = elem;	1471	*head = elem;
875	}	1472	}
876		1473
877	static void	1474	void inline_size
878	wlist_del (WL *head, WL elem)	1475	wlist_del (WL *head, WL elem)
879	{	1476	{
880	while (*head)	1477	while (*head)
881	{	1478	{
882	if (*head == elem)	1479	if (*head == elem)
…		…
887		1484
888	head = &(*head)->next;	1485	head = &(*head)->next;
889	}	1486	}
890	}	1487	}
891		1488
892	static void	1489	void inline_speed
893	ev_clear_pending (W w)	1490	ev_clear_pending (EV_P_ W w)
894	{	1491	{
895	if (w->pending)	1492	if (w->pending)
896	{	1493	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1494	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1495	w->pending = 0;
899	}	1496	}
900	}	1497	}
901		1498
902	static void	1499	void inline_speed
903	ev_start (W w, int active)	1500	ev_start (EV_P_ W w, int active)
904	{	1501	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1502	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1503	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1504
908	w->active = active;	1505	w->active = active;
		1506	ev_ref (EV_A);
909	}	1507	}
910		1508
911	static void	1509	void inline_size
912	ev_stop (W w)	1510	ev_stop (EV_P_ W w)
913	{	1511	{
		1512	ev_unref (EV_A);
914	w->active = 0;	1513	w->active = 0;
915	}	1514	}
916		1515
917	/*****************************************************************************/	1516	/*****************************************************************************/
918		1517
919	void	1518	void
920	ev_io_start (struct ev_io *w)	1519	ev_io_start (EV_P_ ev_io *w)
921	{	1520	{
922	int fd = w->fd;	1521	int fd = w->fd;
923		1522
924	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
925	return;	1524	return;
926		1525
927	assert (("ev_io_start called with negative fd", fd >= 0));	1526	assert (("ev_io_start called with negative fd", fd >= 0));
928		1527
929	ev_start ((W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1529	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1530	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1531
933	fd_change (fd);	1532	fd_change (EV_A_ fd);
934	}	1533	}
935		1534
936	void	1535	void
937	ev_io_stop (struct ev_io *w)	1536	ev_io_stop (EV_P_ ev_io *w)
938	{	1537	{
939	ev_clear_pending ((W)w);	1538	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1539	if (expect_false (!ev_is_active (w)))
941	return;	1540	return;
		1541
		1542	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
942		1543
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1544	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1545	ev_stop (EV_A_ (W)w);
945		1546
946	fd_change (w->fd);	1547	fd_change (EV_A_ w->fd);
947	}	1548	}
948		1549
949	void	1550	void
950	ev_timer_start (struct ev_timer *w)	1551	ev_timer_start (EV_P_ ev_timer *w)
951	{	1552	{
952	if (ev_is_active (w))	1553	if (expect_false (ev_is_active (w)))
953	return;	1554	return;
954		1555
955	w->at += now;	1556	((WT)w)->at += mn_now;
956		1557
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1558	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1559
959	ev_start ((W)w, ++timercnt);	1560	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1561	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
961	timers [timercnt - 1] = w;	1562	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1563	upheap ((WT *)timers, timercnt - 1);
963	}
964		1564
		1565	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1566	}
		1567
965	void	1568	void
966	ev_timer_stop (struct ev_timer *w)	1569	ev_timer_stop (EV_P_ ev_timer *w)
967	{	1570	{
968	ev_clear_pending ((W)w);	1571	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
970	return;	1573	return;
971		1574
972	if (w->active < timercnt--)	1575	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1576
		1577	{
		1578	int active = ((W)w)->active;
		1579
		1580	if (expect_true (--active < --timercnt))
973	{	1581	{
974	timers [w->active - 1] = timers [timercnt];	1582	timers [active] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1583	adjustheap ((WT *)timers, timercnt, active);
976	}	1584	}
		1585	}
977		1586
978	w->at = w->repeat;	1587	((WT)w)->at -= mn_now;
979		1588
980	ev_stop ((W)w);	1589	ev_stop (EV_A_ (W)w);
981	}	1590	}
982		1591
983	void	1592	void
984	ev_timer_again (struct ev_timer *w)	1593	ev_timer_again (EV_P_ ev_timer *w)
985	{	1594	{
986	if (ev_is_active (w))	1595	if (ev_is_active (w))
987	{	1596	{
988	if (w->repeat)	1597	if (w->repeat)
989	{	1598	{
990	w->at = now + w->repeat;	1599	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1600	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1601	}
993	else	1602	else
994	ev_timer_stop (w);	1603	ev_timer_stop (EV_A_ w);
995	}	1604	}
996	else if (w->repeat)	1605	else if (w->repeat)
		1606	{
		1607	w->at = w->repeat;
997	ev_timer_start (w);	1608	ev_timer_start (EV_A_ w);
		1609	}
998	}	1610	}
999		1611
		1612	#if EV_PERIODIC_ENABLE
1000	void	1613	void
1001	ev_periodic_start (struct ev_periodic *w)	1614	ev_periodic_start (EV_P_ ev_periodic *w)
1002	{	1615	{
1003	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1004	return;	1617	return;
1005		1618
		1619	if (w->reschedule_cb)
		1620	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1621	else if (w->interval)
		1622	{
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1623	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1624	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1625	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1626	}
1011		1627
1012	ev_start ((W)w, ++periodiccnt);	1628	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1629	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1014	periodics [periodiccnt - 1] = w;	1630	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1631	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1632
		1633	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1634	}
		1635
1018	void	1636	void
1019	ev_periodic_stop (struct ev_periodic *w)	1637	ev_periodic_stop (EV_P_ ev_periodic *w)
1020	{	1638	{
1021	ev_clear_pending ((W)w);	1639	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1640	if (expect_false (!ev_is_active (w)))
1023	return;	1641	return;
1024		1642
1025	if (w->active < periodiccnt--)	1643	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1644
		1645	{
		1646	int active = ((W)w)->active;
		1647
		1648	if (expect_true (--active < --periodiccnt))
1026	{	1649	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1650	periodics [active] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1651	adjustheap ((WT *)periodics, periodiccnt, active);
1029	}	1652	}
		1653	}
1030		1654
1031	ev_stop ((W)w);	1655	ev_stop (EV_A_ (W)w);
1032	}	1656	}
		1657
		1658	void
		1659	ev_periodic_again (EV_P_ ev_periodic *w)
		1660	{
		1661	/* TODO: use adjustheap and recalculation */
		1662	ev_periodic_stop (EV_A_ w);
		1663	ev_periodic_start (EV_A_ w);
		1664	}
		1665	#endif
1033		1666
1034	#ifndef SA_RESTART	1667	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1668	# define SA_RESTART 0
1036	#endif	1669	#endif
1037		1670
1038	void	1671	void
1039	ev_signal_start (struct ev_signal *w)	1672	ev_signal_start (EV_P_ ev_signal *w)
1040	{	1673	{
		1674	#if EV_MULTIPLICITY
		1675	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1676	#endif
1041	if (ev_is_active (w))	1677	if (expect_false (ev_is_active (w)))
1042	return;	1678	return;
1043		1679
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1680	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1681
1046	ev_start ((W)w, 1);	1682	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1683	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1685
1050	if (!w->next)	1686	if (!((WL)w)->next)
1051	{	1687	{
		1688	#if _WIN32
		1689	signal (w->signum, sighandler);
		1690	#else
1052	struct sigaction sa;	1691	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1692	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1693	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1694	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1695	sigaction (w->signum, &sa, 0);
		1696	#endif
1057	}	1697	}
1058	}	1698	}
1059		1699
1060	void	1700	void
1061	ev_signal_stop (struct ev_signal *w)	1701	ev_signal_stop (EV_P_ ev_signal *w)
1062	{	1702	{
1063	ev_clear_pending ((W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1065	return;	1705	return;
1066		1706
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1707	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1708	ev_stop (EV_A_ (W)w);
1069		1709
1070	if (!signals [w->signum - 1].head)	1710	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1711	signal (w->signum, SIG_DFL);
1072	}	1712	}
1073		1713
1074	void	1714	void
		1715	ev_child_start (EV_P_ ev_child *w)
		1716	{
		1717	#if EV_MULTIPLICITY
		1718	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1719	#endif
		1720	if (expect_false (ev_is_active (w)))
		1721	return;
		1722
		1723	ev_start (EV_A_ (W)w, 1);
		1724	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1725	}
		1726
		1727	void
		1728	ev_child_stop (EV_P_ ev_child *w)
		1729	{
		1730	ev_clear_pending (EV_A_ (W)w);
		1731	if (expect_false (!ev_is_active (w)))
		1732	return;
		1733
		1734	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1735	ev_stop (EV_A_ (W)w);
		1736	}
		1737
		1738	#if EV_STAT_ENABLE
		1739
		1740	# ifdef _WIN32
		1741	# undef lstat
		1742	# define lstat(a,b) _stati64 (a,b)
		1743	# endif
		1744
		1745	#define DEF_STAT_INTERVAL 5.0074891
		1746	#define MIN_STAT_INTERVAL 0.1074891
		1747
		1748	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1749
		1750	#if EV_USE_INOTIFY
		1751	# define EV_INOTIFY_BUFSIZE 8192
		1752
		1753	static void noinline
		1754	infy_add (EV_P_ ev_stat *w)
		1755	{
		1756	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);
		1757
		1758	if (w->wd < 0)
		1759	{
		1760	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1761
		1762	/* monitor some parent directory for speedup hints */
		1763	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1764	{
		1765	char path [4096];
		1766	strcpy (path, w->path);
		1767
		1768	do
		1769	{
		1770	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1771	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1772
		1773	char *pend = strrchr (path, '/');
		1774
		1775	if (!pend)
		1776	break; /* whoops, no '/', complain to your admin */
		1777
		1778	*pend = 0;
		1779	w->wd = inotify_add_watch (fs_fd, path, mask);
		1780	}
		1781	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1782	}
		1783	}
		1784	else
		1785	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1786
		1787	if (w->wd >= 0)
		1788	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1789	}
		1790
		1791	static void noinline
		1792	infy_del (EV_P_ ev_stat *w)
		1793	{
		1794	int slot;
		1795	int wd = w->wd;
		1796
		1797	if (wd < 0)
		1798	return;
		1799
		1800	w->wd = -2;
		1801	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1802	wlist_del (&fs_hash [slot].head, (WL)w);
		1803
		1804	/* remove this watcher, if others are watching it, they will rearm */
		1805	inotify_rm_watch (fs_fd, wd);
		1806	}
		1807
		1808	static void noinline
		1809	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1810	{
		1811	if (slot < 0)
		1812	/* overflow, need to check for all hahs slots */
		1813	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1814	infy_wd (EV_A_ slot, wd, ev);
		1815	else
		1816	{
		1817	WL w_;
		1818
		1819	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1820	{
		1821	ev_stat *w = (ev_stat *)w_;
		1822	w_ = w_->next; /* lets us remove this watcher and all before it */
		1823
		1824	if (w->wd == wd || wd == -1)
		1825	{
		1826	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1827	{
		1828	w->wd = -1;
		1829	infy_add (EV_A_ w); /* re-add, no matter what */
		1830	}
		1831
		1832	stat_timer_cb (EV_A_ &w->timer, 0);
		1833	}
		1834	}
		1835	}
		1836	}
		1837
		1838	static void
		1839	infy_cb (EV_P_ ev_io *w, int revents)
		1840	{
		1841	char buf [EV_INOTIFY_BUFSIZE];
		1842	struct inotify_event *ev = (struct inotify_event *)buf;
		1843	int ofs;
		1844	int len = read (fs_fd, buf, sizeof (buf));
		1845
		1846	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1847	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1848	}
		1849
		1850	void inline_size
		1851	infy_init (EV_P)
		1852	{
		1853	if (fs_fd != -2)
		1854	return;
		1855
		1856	fs_fd = inotify_init ();
		1857
		1858	if (fs_fd >= 0)
		1859	{
		1860	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1861	ev_set_priority (&fs_w, EV_MAXPRI);
		1862	ev_io_start (EV_A_ &fs_w);
		1863	}
		1864	}
		1865
		1866	void inline_size
		1867	infy_fork (EV_P)
		1868	{
		1869	int slot;
		1870
		1871	if (fs_fd < 0)
		1872	return;
		1873
		1874	close (fs_fd);
		1875	fs_fd = inotify_init ();
		1876
		1877	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1878	{
		1879	WL w_ = fs_hash [slot].head;
		1880	fs_hash [slot].head = 0;
		1881
		1882	while (w_)
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us add this watcher */
		1886
		1887	w->wd = -1;
		1888
		1889	if (fs_fd >= 0)
		1890	infy_add (EV_A_ w); /* re-add, no matter what */
		1891	else
		1892	ev_timer_start (EV_A_ &w->timer);
		1893	}
		1894
		1895	}
		1896	}
		1897
		1898	#endif
		1899
		1900	void
		1901	ev_stat_stat (EV_P_ ev_stat *w)
		1902	{
		1903	if (lstat (w->path, &w->attr) < 0)
		1904	w->attr.st_nlink = 0;
		1905	else if (!w->attr.st_nlink)
		1906	w->attr.st_nlink = 1;
		1907	}
		1908
		1909	static void noinline
		1910	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1911	{
		1912	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1913
		1914	/* we copy this here each the time so that */
		1915	/* prev has the old value when the callback gets invoked */
		1916	w->prev = w->attr;
		1917	ev_stat_stat (EV_A_ w);
		1918
		1919	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1920	if (
		1921	w->prev.st_dev != w->attr.st_dev
		1922	|| w->prev.st_ino != w->attr.st_ino
		1923	|| w->prev.st_mode != w->attr.st_mode
		1924	|| w->prev.st_nlink != w->attr.st_nlink
		1925	|| w->prev.st_uid != w->attr.st_uid
		1926	|| w->prev.st_gid != w->attr.st_gid
		1927	|| w->prev.st_rdev != w->attr.st_rdev
		1928	|| w->prev.st_size != w->attr.st_size
		1929	|| w->prev.st_atime != w->attr.st_atime
		1930	|| w->prev.st_mtime != w->attr.st_mtime
		1931	|| w->prev.st_ctime != w->attr.st_ctime
		1932	) {
		1933	#if EV_USE_INOTIFY
		1934	infy_del (EV_A_ w);
		1935	infy_add (EV_A_ w);
		1936	ev_stat_stat (EV_A_ w); /* avoid race... */
		1937	#endif
		1938
		1939	ev_feed_event (EV_A_ w, EV_STAT);
		1940	}
		1941	}
		1942
		1943	void
		1944	ev_stat_start (EV_P_ ev_stat *w)
		1945	{
		1946	if (expect_false (ev_is_active (w)))
		1947	return;
		1948
		1949	/* since we use memcmp, we need to clear any padding data etc. */
		1950	memset (&w->prev, 0, sizeof (ev_statdata));
		1951	memset (&w->attr, 0, sizeof (ev_statdata));
		1952
		1953	ev_stat_stat (EV_A_ w);
		1954
		1955	if (w->interval < MIN_STAT_INTERVAL)
		1956	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1957
		1958	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1959	ev_set_priority (&w->timer, ev_priority (w));
		1960
		1961	#if EV_USE_INOTIFY
		1962	infy_init (EV_A);
		1963
		1964	if (fs_fd >= 0)
		1965	infy_add (EV_A_ w);
		1966	else
		1967	#endif
		1968	ev_timer_start (EV_A_ &w->timer);
		1969
		1970	ev_start (EV_A_ (W)w, 1);
		1971	}
		1972
		1973	void
		1974	ev_stat_stop (EV_P_ ev_stat *w)
		1975	{
		1976	ev_clear_pending (EV_A_ (W)w);
		1977	if (expect_false (!ev_is_active (w)))
		1978	return;
		1979
		1980	#if EV_USE_INOTIFY
		1981	infy_del (EV_A_ w);
		1982	#endif
		1983	ev_timer_stop (EV_A_ &w->timer);
		1984
		1985	ev_stop (EV_A_ (W)w);
		1986	}
		1987	#endif
		1988
		1989	void
1075	ev_idle_start (struct ev_idle *w)	1990	ev_idle_start (EV_P_ ev_idle *w)
1076	{	1991	{
1077	if (ev_is_active (w))	1992	if (expect_false (ev_is_active (w)))
1078	return;	1993	return;
1079		1994
1080	ev_start ((W)w, ++idlecnt);	1995	ev_start (EV_A_ (W)w, ++idlecnt);
1081	array_needsize (idles, idlemax, idlecnt, );	1996	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1082	idles [idlecnt - 1] = w;	1997	idles [idlecnt - 1] = w;
1083	}	1998	}
1084		1999
1085	void	2000	void
1086	ev_idle_stop (struct ev_idle *w)	2001	ev_idle_stop (EV_P_ ev_idle *w)
1087	{	2002	{
1088	ev_clear_pending ((W)w);	2003	ev_clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	2004	if (expect_false (!ev_is_active (w)))
1090	return;	2005	return;
1091		2006
		2007	{
		2008	int active = ((W)w)->active;
1092	idles [w->active - 1] = idles [--idlecnt];	2009	idles [active - 1] = idles [--idlecnt];
		2010	((W)idles [active - 1])->active = active;
		2011	}
		2012
1093	ev_stop ((W)w);	2013	ev_stop (EV_A_ (W)w);
1094	}	2014	}
1095		2015
1096	void	2016	void
1097	ev_prepare_start (struct ev_prepare *w)	2017	ev_prepare_start (EV_P_ ev_prepare *w)
1098	{	2018	{
1099	if (ev_is_active (w))	2019	if (expect_false (ev_is_active (w)))
1100	return;	2020	return;
1101		2021
1102	ev_start ((W)w, ++preparecnt);	2022	ev_start (EV_A_ (W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );	2023	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1104	prepares [preparecnt - 1] = w;	2024	prepares [preparecnt - 1] = w;
1105	}	2025	}
1106		2026
1107	void	2027	void
1108	ev_prepare_stop (struct ev_prepare *w)	2028	ev_prepare_stop (EV_P_ ev_prepare *w)
1109	{	2029	{
1110	ev_clear_pending ((W)w);	2030	ev_clear_pending (EV_A_ (W)w);
1111	if (ev_is_active (w))	2031	if (expect_false (!ev_is_active (w)))
1112	return;	2032	return;
1113		2033
		2034	{
		2035	int active = ((W)w)->active;
1114	prepares [w->active - 1] = prepares [--preparecnt];	2036	prepares [active - 1] = prepares [--preparecnt];
		2037	((W)prepares [active - 1])->active = active;
		2038	}
		2039
1115	ev_stop ((W)w);	2040	ev_stop (EV_A_ (W)w);
1116	}	2041	}
1117		2042
1118	void	2043	void
1119	ev_check_start (struct ev_check *w)	2044	ev_check_start (EV_P_ ev_check *w)
1120	{	2045	{
1121	if (ev_is_active (w))	2046	if (expect_false (ev_is_active (w)))
1122	return;	2047	return;
1123		2048
1124	ev_start ((W)w, ++checkcnt);	2049	ev_start (EV_A_ (W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );	2050	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1126	checks [checkcnt - 1] = w;	2051	checks [checkcnt - 1] = w;
1127	}	2052	}
1128		2053
1129	void	2054	void
1130	ev_check_stop (struct ev_check *w)	2055	ev_check_stop (EV_P_ ev_check *w)
1131	{	2056	{
1132	ev_clear_pending ((W)w);	2057	ev_clear_pending (EV_A_ (W)w);
1133	if (ev_is_active (w))	2058	if (expect_false (!ev_is_active (w)))
1134	return;	2059	return;
1135		2060
		2061	{
		2062	int active = ((W)w)->active;
1136	checks [w->active - 1] = checks [--checkcnt];	2063	checks [active - 1] = checks [--checkcnt];
		2064	((W)checks [active - 1])->active = active;
		2065	}
		2066
1137	ev_stop ((W)w);	2067	ev_stop (EV_A_ (W)w);
1138	}	2068	}
1139		2069
1140	void	2070	#if EV_EMBED_ENABLE
1141	ev_child_start (struct ev_child *w)	2071	void noinline
		2072	ev_embed_sweep (EV_P_ ev_embed *w)
1142	{	2073	{
		2074	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2075	}
		2076
		2077	static void
		2078	embed_cb (EV_P_ ev_io *io, int revents)
		2079	{
		2080	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2081
1143	if (ev_is_active (w))	2082	if (ev_cb (w))
1144	return;	2083	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2084	else
		2085	ev_embed_sweep (loop, w);
		2086	}
1145		2087
		2088	void
		2089	ev_embed_start (EV_P_ ev_embed *w)
		2090	{
		2091	if (expect_false (ev_is_active (w)))
		2092	return;
		2093
		2094	{
		2095	struct ev_loop *loop = w->loop;
		2096	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2097	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2098	}
		2099
		2100	ev_set_priority (&w->io, ev_priority (w));
		2101	ev_io_start (EV_A_ &w->io);
		2102
1146	ev_start ((W)w, 1);	2103	ev_start (EV_A_ (W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}	2104	}
1149		2105
1150	void	2106	void
1151	ev_child_stop (struct ev_child *w)	2107	ev_embed_stop (EV_P_ ev_embed *w)
1152	{	2108	{
1153	ev_clear_pending ((W)w);	2109	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))	2110	if (expect_false (!ev_is_active (w)))
1155	return;	2111	return;
1156		2112
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2113	ev_io_stop (EV_A_ &w->io);
		2114
1158	ev_stop ((W)w);	2115	ev_stop (EV_A_ (W)w);
1159	}	2116	}
		2117	#endif
		2118
		2119	#if EV_FORK_ENABLE
		2120	void
		2121	ev_fork_start (EV_P_ ev_fork *w)
		2122	{
		2123	if (expect_false (ev_is_active (w)))
		2124	return;
		2125
		2126	ev_start (EV_A_ (W)w, ++forkcnt);
		2127	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2128	forks [forkcnt - 1] = w;
		2129	}
		2130
		2131	void
		2132	ev_fork_stop (EV_P_ ev_fork *w)
		2133	{
		2134	ev_clear_pending (EV_A_ (W)w);
		2135	if (expect_false (!ev_is_active (w)))
		2136	return;
		2137
		2138	{
		2139	int active = ((W)w)->active;
		2140	forks [active - 1] = forks [--forkcnt];
		2141	((W)forks [active - 1])->active = active;
		2142	}
		2143
		2144	ev_stop (EV_A_ (W)w);
		2145	}
		2146	#endif
1160		2147
1161	/*****************************************************************************/	2148	/*****************************************************************************/
1162		2149
1163	struct ev_once	2150	struct ev_once
1164	{	2151	{
1165	struct ev_io io;	2152	ev_io io;
1166	struct ev_timer to;	2153	ev_timer to;
1167	void (*cb)(int revents, void *arg);	2154	void (*cb)(int revents, void *arg);
1168	void *arg;	2155	void *arg;
1169	};	2156	};
1170		2157
1171	static void	2158	static void
1172	once_cb (struct ev_once *once, int revents)	2159	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	2160	{
1174	void (*cb)(int revents, void *arg) = once->cb;	2161	void (*cb)(int revents, void *arg) = once->cb;
1175	void *arg = once->arg;	2162	void *arg = once->arg;
1176		2163
1177	ev_io_stop (&once->io);	2164	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	2165	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	2166	ev_free (once);
1180		2167
1181	cb (revents, arg);	2168	cb (revents, arg);
1182	}	2169	}
1183		2170
1184	static void	2171	static void
1185	once_cb_io (struct ev_io *w, int revents)	2172	once_cb_io (EV_P_ ev_io *w, int revents)
1186	{	2173	{
1187	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2174	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188	}	2175	}
1189		2176
1190	static void	2177	static void
1191	once_cb_to (struct ev_timer *w, int revents)	2178	once_cb_to (EV_P_ ev_timer *w, int revents)
1192	{	2179	{
1193	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2180	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194	}	2181	}
1195		2182
1196	void	2183	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2184	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198	{	2185	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	2186	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1200		2187
1201	if (!once)	2188	if (expect_false (!once))
		2189	{
1202	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2190	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1203	else	2191	return;
1204	{	2192	}
		2193
1205	once->cb = cb;	2194	once->cb = cb;
1206	once->arg = arg;	2195	once->arg = arg;
1207		2196
1208	ev_watcher_init (&once->io, once_cb_io);	2197	ev_init (&once->io, once_cb_io);
1209	if (fd >= 0)	2198	if (fd >= 0)
1210	{	2199	{
1211	ev_io_set (&once->io, fd, events);	2200	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	2201	ev_io_start (EV_A_ &once->io);
1213	}	2202	}
1214		2203
1215	ev_watcher_init (&once->to, once_cb_to);	2204	ev_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	2205	if (timeout >= 0.)
1217	{	2206	{
1218	ev_timer_set (&once->to, timeout, 0.);	2207	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	2208	ev_timer_start (EV_A_ &once->to);
1220	}
1221	}
1222	}
1223
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{	2209	}
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}	2210	}
1301		2211
		2212	#ifdef __cplusplus
		2213	}
1302	#endif	2214	#endif
1303		2215
1304
1305
1306

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