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Comparing libev/ev.c (file contents):
Revision 1.73 by root, Tue Nov 6 16:27:10 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 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
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
135	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
136	#else	200	#else
137	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
138	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
139	#endif	205	#endif
140		206
141	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
143		209
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
147	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
150		219
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		221
		222	#ifdef _WIN32
153	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
154		225
155	/*****************************************************************************/	226	/*****************************************************************************/
156		227
157	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
158		229
…		…
205	typedef struct	276	typedef struct
206	{	277	{
207	WL head;	278	WL head;
208	unsigned char events;	279	unsigned char events;
209	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
210	} ANFD;	284	} ANFD;
211		285
212	typedef struct	286	typedef struct
213	{	287	{
214	W w;	288	W w;
215	int events;	289	int events;
216	} ANPENDING;	290	} ANPENDING;
217		291
218	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
219		293
220	struct ev_loop	294	struct ev_loop
221	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	299	#include "ev_vars.h"
224	};
225	# undef VAR	300	#undef VAR
		301	};
226	# include "ev_wrap.h"	302	#include "ev_wrap.h"
		303
		304	static struct ev_loop default_loop_struct;
		305	struct ev_loop *ev_default_loop_ptr;
227		306
228	#else	307	#else
229		308
		309	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	311	#include "ev_vars.h"
232	# undef VAR	312	#undef VAR
		313
		314	static int ev_default_loop_ptr;
233		315
234	#endif	316	#endif
235		317
236	/*****************************************************************************/	318	/*****************************************************************************/
237		319
238	inline ev_tstamp	320	ev_tstamp noinline
239	ev_time (void)	321	ev_time (void)
240	{	322	{
241	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
242	struct timespec ts;	324	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	331	#endif
250	}	332	}
251		333
252	inline ev_tstamp	334	ev_tstamp inline_size
253	get_clock (void)	335	get_clock (void)
254	{	336	{
255	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
257	{	339	{
…		…
262	#endif	344	#endif
263		345
264	return ev_time ();	346	return ev_time ();
265	}	347	}
266		348
		349	#if EV_MULTIPLICITY
267	ev_tstamp	350	ev_tstamp
268	ev_now (EV_P)	351	ev_now (EV_P)
269	{	352	{
270	return rt_now;	353	return ev_rt_now;
271	}	354	}
		355	#endif
272		356
273	#define array_roundsize(base,n) ((n) | 4 & ~3)	357	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		358
275	#define array_needsize(base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
277	{ \	361	{ \
278	int newcnt = cur; \	362	int newcnt = cur; \
279	do \	363	do \
280	{ \	364	{ \
281	newcnt = array_roundsize (base, newcnt << 1); \	365	newcnt = array_roundsize (type, newcnt << 1); \
282	} \	366	} \
283	while ((cnt) > newcnt); \	367	while ((cnt) > newcnt); \
284	\	368	\
285	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286	init (base + cur, newcnt - cur); \	370	init (base + cur, newcnt - cur); \
287	cur = newcnt; \	371	cur = newcnt; \
288	}	372	}
289		373
290	#define array_slim(stem) \	374	#define array_slim(type,stem) \
291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292	{ \	376	{ \
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	380	}
297
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302		381
303	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		384
306	/*****************************************************************************/	385	/*****************************************************************************/
307		386
308	static void	387	void inline_size
309	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
310	{	389	{
311	while (count--)	390	while (count--)
312	{	391	{
313	base->head = 0;	392	base->head = 0;
…		…
316		395
317	++base;	396	++base;
318	}	397	}
319	}	398	}
320		399
321	static void	400	void noinline
322	event (EV_P_ W w, int events)	401	ev_feed_event (EV_P_ void *w, int revents)
323	{	402	{
324	if (w->pending)	403	W w_ = (W)w;
		404
		405	if (expect_false (w_->pending))
325	{	406	{
326	pendings [ABSPRI (w)][w->pending - 1].events |= events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
327	return;	408	return;
328	}	409	}
329		410
330	w->pending = ++pendingcnt [ABSPRI (w)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
331	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
332	pendings [ABSPRI (w)][w->pending - 1].w = w;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
334	}	415	}
335		416
336	static void	417	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)	418	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{	419	{
339	int i;	420	int i;
340		421
341	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
343	}	424	}
344		425
345	static void	426	void inline_speed
346	fd_event (EV_P_ int fd, int events)	427	fd_event (EV_P_ int fd, int revents)
347	{	428	{
348	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	430	ev_io *w;
350		431
351	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	432	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
352	{	433	{
353	int ev = w->events & events;	434	int ev = w->events & revents;
354		435
355	if (ev)	436	if (ev)
356	event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
357	}	438	}
		439	}
		440
		441	void
		442	ev_feed_fd_event (EV_P_ int fd, int revents)
		443	{
		444	fd_event (EV_A_ fd, revents);
358	}	445	}
359		446
360	/*****************************************************************************/	447	/*****************************************************************************/
361		448
362	static void	449	void inline_size
363	fd_reify (EV_P)	450	fd_reify (EV_P)
364	{	451	{
365	int i;	452	int i;
366		453
367	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
368	{	455	{
369	int fd = fdchanges [i];	456	int fd = fdchanges [i];
370	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
371	struct ev_io *w;	458	ev_io *w;
372		459
373	int events = 0;	460	int events = 0;
374		461
375	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376	events |= w->events;	463	events |= w->events;
377		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
378	anfd->reify = 0;	474	anfd->reify = 0;
379		475
380	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	477	anfd->events = events;
382	}	478	}
383		479
384	fdchangecnt = 0;	480	fdchangecnt = 0;
385	}	481	}
386		482
387	static void	483	void inline_size
388	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
389	{	485	{
390	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
391	return;	487	return;
392		488
393	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
394		490
395	++fdchangecnt;	491	++fdchangecnt;
396	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
398	}	494	}
399		495
400	static void	496	void inline_speed
401	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
402	{	498	{
403	struct ev_io *w;	499	ev_io *w;
404		500
405	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
406	{	502	{
407	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
408	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
409	}	505	}
410	}	506	}
411		507
412	static int	508	int inline_size
413	fd_valid (int fd)	509	fd_valid (int fd)
414	{	510	{
415	#ifdef WIN32	511	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
417	#else	513	#else
418	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
419	#endif	515	#endif
420	}	516	}
421		517
422	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
423	static void	519	static void noinline
424	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
425	{	521	{
426	int fd;	522	int fd;
427		523
428	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
430	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
431	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
432	}	528	}
433		529
434	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
435	static void	531	static void noinline
436	fd_enomem (EV_P)	532	fd_enomem (EV_P)
437	{	533	{
438	int fd;	534	int fd;
439		535
440	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
443	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
444	return;	540	return;
445	}	541	}
446	}	542	}
447		543
448	/* usually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
449	static void	545	static void noinline
450	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
451	{	547	{
452	int fd;	548	int fd;
453		549
454	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
460	}	556	}
461	}	557	}
462		558
463	/*****************************************************************************/	559	/*****************************************************************************/
464		560
465	static void	561	void inline_speed
466	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
467	{	563	{
468	WT w = heap [k];	564	WT w = heap [k];
469		565
470	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
477	heap [k] = w;	573	heap [k] = w;
478	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
479		575
480	}	576	}
481		577
482	static void	578	void inline_speed
483	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
484	{	580	{
485	WT w = heap [k];	581	WT w = heap [k];
486		582
487	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
501		597
502	heap [k] = w;	598	heap [k] = w;
503	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
504	}	600	}
505		601
		602	void inline_size
		603	adjustheap (WT *heap, int N, int k)
		604	{
		605	upheap (heap, k);
		606	downheap (heap, N, k);
		607	}
		608
506	/*****************************************************************************/	609	/*****************************************************************************/
507		610
508	typedef struct	611	typedef struct
509	{	612	{
510	WL head;	613	WL head;
…		…
514	static ANSIG *signals;	617	static ANSIG *signals;
515	static int signalmax;	618	static int signalmax;
516		619
517	static int sigpipe [2];	620	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	622	static ev_io sigev;
520		623
521	static void	624	void inline_size
522	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
523	{	626	{
524	while (count--)	627	while (count--)
525	{	628	{
526	base->head = 0;	629	base->head = 0;
…		…
531	}	634	}
532		635
533	static void	636	static void
534	sighandler (int signum)	637	sighandler (int signum)
535	{	638	{
536	#if WIN32	639	#if _WIN32
537	signal (signum, sighandler);	640	signal (signum, sighandler);
538	#endif	641	#endif
539		642
540	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
541		644
…		…
546	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
547	errno = old_errno;	650	errno = old_errno;
548	}	651	}
549	}	652	}
550		653
		654	void noinline
		655	ev_feed_signal_event (EV_P_ int signum)
		656	{
		657	WL w;
		658
		659	#if EV_MULTIPLICITY
		660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		661	#endif
		662
		663	--signum;
		664
		665	if (signum < 0 || signum >= signalmax)
		666	return;
		667
		668	signals [signum].gotsig = 0;
		669
		670	for (w = signals [signum].head; w; w = w->next)
		671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		672	}
		673
551	static void	674	static void
552	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
553	{	676	{
554	WL w;
555	int signum;	677	int signum;
556		678
557	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
558	gotsig = 0;	680	gotsig = 0;
559		681
560	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
561	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
562	{	684	ev_feed_signal_event (EV_A_ signum + 1);
563	signals [signum].gotsig = 0;
564
565	for (w = signals [signum].head; w; w = w->next)
566	event (EV_A_ (W)w, EV_SIGNAL);
567	}
568	}	685	}
569		686
570	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
571	siginit (EV_P)	700	siginit (EV_P)
572	{	701	{
573	#ifndef WIN32	702	fd_intern (sigpipe [0]);
574	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
575	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
576
577	/* rather than sort out wether we really need nb, set it */
578	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
579	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
580	#endif
581		704
582	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
583	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
584	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
585	}	708	}
586		709
587	/*****************************************************************************/	710	/*****************************************************************************/
588		711
589	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
590		713
591	#ifndef WIN32	714	#ifndef _WIN32
592		715
593	static struct ev_signal childev;	716	static ev_signal childev;
594		717
595	#ifndef WCONTINUED	718	#ifndef WCONTINUED
596	# define WCONTINUED 0	719	# define WCONTINUED 0
597	#endif	720	#endif
598		721
599	static void	722	void inline_speed
600	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
601	{	724	{
602	struct ev_child *w;	725	ev_child *w;
603		726
604	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
605	if (w->pid == pid || !w->pid)	728	if (w->pid == pid || !w->pid)
606	{	729	{
607	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
608	w->rpid = pid;	731	w->rpid = pid;
609	w->rstatus = status;	732	w->rstatus = status;
610	event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
611	}	734	}
612	}	735	}
613		736
614	static void	737	static void
615	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
616	{	739	{
617	int pid, status;	740	int pid, status;
618		741
619	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
620	{	743	{
621	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
622	event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
623		747
624	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
625	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
626	}	750	}
627	}	751	}
628		752
629	#endif	753	#endif
630		754
631	/*****************************************************************************/	755	/*****************************************************************************/
632		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
633	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
634	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
635	#endif	762	#endif
636	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
637	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
654	{	781	{
655	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
656	}	783	}
657		784
658	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
659	static int	786	int inline_size
660	enable_secure (void)	787	enable_secure (void)
661	{	788	{
662	#ifdef WIN32	789	#ifdef _WIN32
663	return 0;	790	return 0;
664	#else	791	#else
665	return getuid () != geteuid ()	792	return getuid () != geteuid ()
666	|| getgid () != getegid ();	793	|| getgid () != getegid ();
667	#endif	794	#endif
668	}	795	}
669		796
670	int	797	unsigned int
671	ev_method (EV_P)	798	ev_supported_backends (void)
672	{	799	{
673	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	| EVBACKEND_KQUEUE
		834	| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
674	}	841	}
675		842
676	static void	843	static void
677	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
678	{	845	{
679	if (!method)	846	if (!backend)
680	{	847	{
681	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
682	{	849	{
683	struct timespec ts;	850	struct timespec ts;
684	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
685	have_monotonic = 1;	852	have_monotonic = 1;
686	}	853	}
687	#endif	854	#endif
688		855
689	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
690	mn_now = get_clock ();	857	mn_now = get_clock ();
691	now_floor = mn_now;	858	now_floor = mn_now;
692	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
693		860
694	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
695	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
696	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
697	else
698	methods = EVMETHOD_ANY;
699		865
700	method = 0;	866	if (!(flags & 0x0000ffffUL))
701	#if EV_USE_WIN32	867	flags |= ev_recommended_backends ();
702	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
703	#endif	872	#endif
704	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
705	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
706	#endif	875	#endif
707	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
708	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
709	#endif	878	#endif
710	#if EV_USE_POLL	879	#if EV_USE_POLL
711	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
712	#endif	881	#endif
713	#if EV_USE_SELECT	882	#if EV_USE_SELECT
714	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
715	#endif	884	#endif
716		885
717	ev_watcher_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
719	}	888	}
720	}	889	}
721		890
722	void	891	static void
723	loop_destroy (EV_P)	892	loop_destroy (EV_P)
724	{	893	{
725	int i;	894	int i;
726		895
727	#if EV_USE_WIN32	896	#if EV_USE_PORT
728	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
729	#endif	898	#endif
730	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
731	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
732	#endif	901	#endif
733	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
734	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
735	#endif	904	#endif
736	#if EV_USE_POLL	905	#if EV_USE_POLL
737	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
738	#endif	907	#endif
739	#if EV_USE_SELECT	908	#if EV_USE_SELECT
740	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
741	#endif	910	#endif
742		911
743	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
744	array_free (pending, [i]);	913	array_free (pending, [i]);
745		914
746	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
747	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
748	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
749	array_free_microshit (periodic);	918	#if EV_PERIODIC_ENABLE
750	array_free_microshit (idle);	919	array_free (periodic, EMPTY0);
751	array_free_microshit (prepare);	920	#endif
752	array_free_microshit (check);	921	array_free (idle, EMPTY0);
		922	array_free (prepare, EMPTY0);
		923	array_free (check, EMPTY0);
753		924
754	method = 0;	925	backend = 0;
755	}	926	}
756		927
757	static void	928	static void
758	loop_fork (EV_P)	929	loop_fork (EV_P)
759	{	930	{
		931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
760	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
761	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
762	#endif
763	#if EV_USE_KQUEUE
764	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
765	#endif	939	#endif
766		940
767	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
768	{	942	{
769	/* default loop */	943	/* default loop */
…		…
782	postfork = 0;	956	postfork = 0;
783	}	957	}
784		958
785	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
786	struct ev_loop *	960	struct ev_loop *
787	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
788	{	962	{
789	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	963	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
790		964
791	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
792		966
793	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
794		968
795	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
796	return loop;	970	return loop;
797		971
798	return 0;	972	return 0;
799	}	973	}
800		974
…		…
812	}	986	}
813		987
814	#endif	988	#endif
815		989
816	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
817	struct ev_loop default_loop_struct;
818	static struct ev_loop *default_loop;
819
820	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
821	#else	993	#else
822	static int default_loop;
823
824	int	994	int
		995	ev_default_loop (unsigned int flags)
825	#endif	996	#endif
826	ev_default_loop (int methods)
827	{	997	{
828	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
829	if (pipe (sigpipe))	999	if (pipe (sigpipe))
830	return 0;	1000	return 0;
831		1001
832	if (!default_loop)	1002	if (!ev_default_loop_ptr)
833	{	1003	{
834	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
835	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
836	#else	1006	#else
837	default_loop = 1;	1007	ev_default_loop_ptr = 1;
838	#endif	1008	#endif
839		1009
840	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
841		1011
842	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
843	{	1013	{
844	siginit (EV_A);	1014	siginit (EV_A);
845		1015
846	#ifndef WIN32	1016	#ifndef _WIN32
847	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
848	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
849	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
850	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
851	#endif	1021	#endif
852	}	1022	}
853	else	1023	else
854	default_loop = 0;	1024	ev_default_loop_ptr = 0;
855	}	1025	}
856		1026
857	return default_loop;	1027	return ev_default_loop_ptr;
858	}	1028	}
859		1029
860	void	1030	void
861	ev_default_destroy (void)	1031	ev_default_destroy (void)
862	{	1032	{
863	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
865	#endif	1035	#endif
866		1036
867	#ifndef WIN32	1037	#ifndef _WIN32
868	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
869	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
870	#endif	1040	#endif
871		1041
872	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
880		1050
881	void	1051	void
882	ev_default_fork (void)	1052	ev_default_fork (void)
883	{	1053	{
884	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
886	#endif	1056	#endif
887		1057
888	if (method)	1058	if (backend)
889	postfork = 1;	1059	postfork = 1;
890	}	1060	}
891		1061
892	/*****************************************************************************/	1062	/*****************************************************************************/
893		1063
894	static void	1064	int inline_size
		1065	any_pending (EV_P)
		1066	{
		1067	int pri;
		1068
		1069	for (pri = NUMPRI; pri--; )
		1070	if (pendingcnt [pri])
		1071	return 1;
		1072
		1073	return 0;
		1074	}
		1075
		1076	void inline_speed
895	call_pending (EV_P)	1077	call_pending (EV_P)
896	{	1078	{
897	int pri;	1079	int pri;
898		1080
899	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
900	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
901	{	1083	{
902	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
903		1085
904	if (p->w)	1086	if (expect_true (p->w))
905	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
906	p->w->pending = 0;	1090	p->w->pending = 0;
907	p->w->cb (EV_A_ p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
908	}	1092	}
909	}	1093	}
910	}	1094	}
911		1095
912	static void	1096	void inline_size
913	timers_reify (EV_P)	1097	timers_reify (EV_P)
914	{	1098	{
915	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
916	{	1100	{
917	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
918		1102
919	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
920		1104
921	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
922	if (w->repeat)	1106	if (w->repeat)
923	{	1107	{
924	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
925	((WT)w)->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
926	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
927	}	1115	}
928	else	1116	else
929	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
930		1118
931	event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
932	}	1120	}
933	}	1121	}
934		1122
935	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
936	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
937	{	1126	{
938	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
939	{	1128	{
940	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
941		1130
942	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
943		1132
944	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
945	if (w->interval)	1134	if (w->reschedule_cb)
946	{	1135	{
		1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1138	downheap ((WT *)periodics, periodiccnt, 0);
		1139	}
		1140	else if (w->interval)
		1141	{
947	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
948	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
949	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
950	}	1145	}
951	else	1146	else
952	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
953		1148
954	event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
955	}	1150	}
956	}	1151	}
957		1152
958	static void	1153	static void noinline
959	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
960	{	1155	{
961	int i;	1156	int i;
962		1157
963	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
964	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
965	{	1160	{
966	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
967		1162
		1163	if (w->reschedule_cb)
		1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
968	if (w->interval)	1165	else if (w->interval)
969	{
970	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
971
972	if (fabs (diff) >= 1e-4)
973	{
974	ev_periodic_stop (EV_A_ w);
975	ev_periodic_start (EV_A_ w);
976
977	i = 0; /* restart loop, inefficient, but time jumps should be rare */
978	}
979	}
980	}	1167	}
981	}
982		1168
983	inline int	1169	/* now rebuild the heap */
		1170	for (i = periodiccnt >> 1; i--; )
		1171	downheap ((WT *)periodics, periodiccnt, i);
		1172	}
		1173	#endif
		1174
		1175	int inline_size
984	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
985	{	1177	{
986	mn_now = get_clock ();	1178	mn_now = get_clock ();
987		1179
988	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
989	{	1181	{
990	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
991	return 0;	1183	return 0;
992	}	1184	}
993	else	1185	else
994	{	1186	{
995	now_floor = mn_now;	1187	now_floor = mn_now;
996	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
997	return 1;	1189	return 1;
998	}	1190	}
999	}	1191	}
1000		1192
1001	static void	1193	void inline_size
1002	time_update (EV_P)	1194	time_update (EV_P)
1003	{	1195	{
1004	int i;	1196	int i;
1005		1197
1006	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1008	{	1200	{
1009	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1010	{	1202	{
1011	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1012		1204
1013	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
1014	{	1214	{
1015	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1016		1216
1017	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1018	return; /* all is well */	1218	return; /* all is well */
1019		1219
1020	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1021	mn_now = get_clock ();	1221	mn_now = get_clock ();
1022	now_floor = mn_now;	1222	now_floor = mn_now;
1023	}	1223	}
1024		1224
		1225	# if EV_PERIODIC_ENABLE
1025	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
1026	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1027	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1028	}	1230	}
1029	}	1231	}
1030	else	1232	else
1031	#endif	1233	#endif
1032	{	1234	{
1033	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1034		1236
1035	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1036	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
1037	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
1038		1242
1039	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
1040	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
1041	((WT)timers [i])->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
1042	}	1246	}
1043		1247
1044	mn_now = rt_now;	1248	mn_now = ev_rt_now;
1045	}	1249	}
1046	}	1250	}
1047		1251
1048	void	1252	void
1049	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
1060	static int loop_done;	1264	static int loop_done;
1061		1265
1062	void	1266	void
1063	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1064	{	1268	{
1065	double block;
1066	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1067		1272
1068	do	1273	while (activecnt)
1069	{	1274	{
1070	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1071	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1072	{	1277	{
1073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1080		1285
1081	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1082	fd_reify (EV_A);	1287	fd_reify (EV_A);
1083		1288
1084	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1085		1292
1086	/* we only need this for !monotonic clockor timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK || idlecnt)
1087	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
1088	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1089	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1090	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1091	else	1301	else
1092	#endif	1302	#endif
1093	{	1303	{
1094	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1095	mn_now = rt_now;	1305	mn_now = ev_rt_now;
1096	}	1306	}
1097		1307
1098	if (flags & EVLOOP_NONBLOCK || idlecnt)
1099	block = 0.;
1100	else
1101	{
1102	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1103		1309
1104	if (timercnt)	1310	if (timercnt)
1105	{	1311	{
1106	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1107	if (block > to) block = to;	1313	if (block > to) block = to;
1108	}	1314	}
1109		1315
		1316	#if EV_PERIODIC_ENABLE
1110	if (periodiccnt)	1317	if (periodiccnt)
1111	{	1318	{
1112	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1113	if (block > to) block = to;	1320	if (block > to) block = to;
1114	}	1321	}
		1322	#endif
1115		1323
1116	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1117	}	1325	}
1118		1326
1119	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1120		1329
1121	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1122	time_update (EV_A);	1331	time_update (EV_A);
1123		1332
1124	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1125	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1126	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1127		1338
1128	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1129	if (!pendingcnt)	1340	if (idlecnt && !any_pending (EV_A))
1130	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1131		1342
1132	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1133	if (checkcnt)	1344	if (expect_false (checkcnt))
1134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1135		1346
1136	call_pending (EV_A);	1347	call_pending (EV_A);
1137	}
1138	while (activecnt && !loop_done);
1139		1348
1140	if (loop_done != 2)	1349	if (expect_false (loop_done))
1141	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1142	}	1355	}
1143		1356
1144	void	1357	void
1145	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1146	{	1359	{
1147	loop_done = how;	1360	loop_done = how;
1148	}	1361	}
1149		1362
1150	/*****************************************************************************/	1363	/*****************************************************************************/
1151		1364
1152	inline void	1365	void inline_size
1153	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1154	{	1367	{
1155	elem->next = *head;	1368	elem->next = *head;
1156	*head = elem;	1369	*head = elem;
1157	}	1370	}
1158		1371
1159	inline void	1372	void inline_size
1160	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1161	{	1374	{
1162	while (*head)	1375	while (*head)
1163	{	1376	{
1164	if (*head == elem)	1377	if (*head == elem)
…		…
1169		1382
1170	head = &(*head)->next;	1383	head = &(*head)->next;
1171	}	1384	}
1172	}	1385	}
1173		1386
1174	inline void	1387	void inline_speed
1175	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1176	{	1389	{
1177	if (w->pending)	1390	if (w->pending)
1178	{	1391	{
1179	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1180	w->pending = 0;	1393	w->pending = 0;
1181	}	1394	}
1182	}	1395	}
1183		1396
1184	inline void	1397	void inline_speed
1185	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1186	{	1399	{
1187	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1188	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1189		1402
1190	w->active = active;	1403	w->active = active;
1191	ev_ref (EV_A);	1404	ev_ref (EV_A);
1192	}	1405	}
1193		1406
1194	inline void	1407	void inline_size
1195	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1196	{	1409	{
1197	ev_unref (EV_A);	1410	ev_unref (EV_A);
1198	w->active = 0;	1411	w->active = 0;
1199	}	1412	}
1200		1413
1201	/*****************************************************************************/	1414	/*****************************************************************************/
1202		1415
1203	void	1416	void
1204	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1205	{	1418	{
1206	int fd = w->fd;	1419	int fd = w->fd;
1207		1420
1208	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1209	return;	1422	return;
1210		1423
1211	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1212		1425
1213	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
1214	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1215	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1216		1429
1217	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1218	}	1431	}
1219		1432
1220	void	1433	void
1221	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1222	{	1435	{
1223	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1224	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1225	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1226		1441
1227	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1228	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1229		1444
1230	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1231	}	1446	}
1232		1447
1233	void	1448	void
1234	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1235	{	1450	{
1236	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1237	return;	1452	return;
1238		1453
1239	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1240		1455
1241	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1242		1457
1243	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1244	array_needsize (timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1245	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1246	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1247		1462
1248	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1249	}	1464	}
1250		1465
1251	void	1466	void
1252	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1253	{	1468	{
1254	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1255	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1256	return;	1471	return;
1257		1472
1258	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1259		1474
1260	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1261	{	1476	{
1262	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1263	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1264	}	1479	}
1265		1480
1266	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1267		1482
1268	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1269	}	1484	}
1270		1485
1271	void	1486	void
1272	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1273	{	1488	{
1274	if (ev_is_active (w))	1489	if (ev_is_active (w))
1275	{	1490	{
1276	if (w->repeat)	1491	if (w->repeat)
1277	{	1492	{
1278	((WT)w)->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1279	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1280	}	1495	}
1281	else	1496	else
1282	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1283	}	1498	}
1284	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1285	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1286	}	1504	}
1287		1505
		1506	#if EV_PERIODIC_ENABLE
1288	void	1507	void
1289	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1290	{	1509	{
1291	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1292	return;	1511	return;
1293		1512
		1513	if (w->reschedule_cb)
		1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1515	else if (w->interval)
		1516	{
1294	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1295
1296	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1297	if (w->interval)
1298	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1520	}
1299		1521
1300	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1301	array_needsize (periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1302	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1303	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1304		1526
1305	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1306	}	1528	}
1307		1529
1308	void	1530	void
1309	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1310	{	1532	{
1311	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1313	return;	1535	return;
1314		1536
1315	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1316		1538
1317	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1318	{	1540	{
1319	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1320	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1321	}	1543	}
1322		1544
1323	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1324	}	1546	}
1325		1547
1326	void	1548	void
		1549	ev_periodic_again (EV_P_ ev_periodic *w)
		1550	{
		1551	/* TODO: use adjustheap and recalculation */
		1552	ev_periodic_stop (EV_A_ w);
		1553	ev_periodic_start (EV_A_ w);
		1554	}
		1555	#endif
		1556
		1557	void
1327	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1328	{	1559	{
1329	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1330	return;	1561	return;
1331		1562
1332	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1333	array_needsize (idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1334	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1335	}	1566	}
1336		1567
1337	void	1568	void
1338	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1339	{	1570	{
1340	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1341	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1342	return;	1573	return;
1343		1574
		1575	{
		1576	int active = ((W)w)->active;
1344	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1345	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1346	}	1582	}
1347		1583
1348	void	1584	void
1349	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1350	{	1586	{
1351	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1352	return;	1588	return;
1353		1589
1354	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1355	array_needsize (prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1356	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1357	}	1593	}
1358		1594
1359	void	1595	void
1360	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1361	{	1597	{
1362	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1363	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1364	return;	1600	return;
1365		1601
		1602	{
		1603	int active = ((W)w)->active;
1366	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1367	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1368	}	1609	}
1369		1610
1370	void	1611	void
1371	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1372	{	1613	{
1373	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1374	return;	1615	return;
1375		1616
1376	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1377	array_needsize (checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1378	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1379	}	1620	}
1380		1621
1381	void	1622	void
1382	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1383	{	1624	{
1384	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1385	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1386	return;	1627	return;
1387		1628
		1629	{
		1630	int active = ((W)w)->active;
1388	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1389	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1390	}	1636	}
1391		1637
1392	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1393	# define SA_RESTART 0	1639	# define SA_RESTART 0
1394	#endif	1640	#endif
1395		1641
1396	void	1642	void
1397	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1398	{	1644	{
1399	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1400	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1401	#endif	1647	#endif
1402	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1403	return;	1649	return;
1404		1650
1405	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1406		1652
1407	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1409	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1410		1656
1411	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1412	{	1658	{
1413	#if WIN32	1659	#if _WIN32
1414	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1415	#else	1661	#else
1416	struct sigaction sa;	1662	struct sigaction sa;
1417	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1418	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1421	#endif	1667	#endif
1422	}	1668	}
1423	}	1669	}
1424		1670
1425	void	1671	void
1426	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1427	{	1673	{
1428	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1429	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1430	return;	1676	return;
1431		1677
1432	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1433	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1434		1680
1435	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1436	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1437	}	1683	}
1438		1684
1439	void	1685	void
1440	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1441	{	1687	{
1442	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1443	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1444	#endif	1690	#endif
1445	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1446	return;	1692	return;
1447		1693
1448	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1449	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1450	}	1696	}
1451		1697
1452	void	1698	void
1453	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1454	{	1700	{
1455	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1457	return;	1703	return;
1458		1704
1459	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1460	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1461	}	1707	}
1462		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1463	/*****************************************************************************/	1819	/*****************************************************************************/
1464		1820
1465	struct ev_once	1821	struct ev_once
1466	{	1822	{
1467	struct ev_io io;	1823	ev_io io;
1468	struct ev_timer to;	1824	ev_timer to;
1469	void (*cb)(int revents, void *arg);	1825	void (*cb)(int revents, void *arg);
1470	void *arg;	1826	void *arg;
1471	};	1827	};
1472		1828
1473	static void	1829	static void
…		…
1482		1838
1483	cb (revents, arg);	1839	cb (revents, arg);
1484	}	1840	}
1485		1841
1486	static void	1842	static void
1487	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1488	{	1844	{
1489	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1490	}	1846	}
1491		1847
1492	static void	1848	static void
1493	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1494	{	1850	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1496	}	1852	}
1497		1853
1498	void	1854	void
1499	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1500	{	1856	{
1501	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1857	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1502		1858
1503	if (!once)	1859	if (expect_false (!once))
		1860	{
1504	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1861	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1505	else	1862	return;
1506	{	1863	}
		1864
1507	once->cb = cb;	1865	once->cb = cb;
1508	once->arg = arg;	1866	once->arg = arg;
1509		1867
1510	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1511	if (fd >= 0)	1869	if (fd >= 0)
1512	{	1870	{
1513	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1514	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1515	}	1873	}
1516		1874
1517	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1518	if (timeout >= 0.)	1876	if (timeout >= 0.)
1519	{	1877	{
1520	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1521	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1522	}
1523	}	1880	}
1524	}	1881	}
1525		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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