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Comparing libev/ev.c (file contents):
Revision 1.81 by root, Fri Nov 9 17:07:59 2007 UTC vs.
Revision 1.149 by root, Tue Nov 27 19:23:31 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	157	#ifndef EV_USE_PORT
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	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
103	# else	164	# else
104	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
105	# endif	166	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif	167	#endif
111		168
112	/**/	169	/**/
113		170
114	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
122	#endif	179	#endif
123		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
124	/**/	185	/**/
125		186
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#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) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		190
131	#ifdef EV_H	191	#ifdef EV_H
132	# include EV_H	192	# include EV_H
133	#else	193	#else
134	# include "ev.h"	194	# include "ev.h"
135	#endif	195	#endif
136		196
137	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
139	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
140	#else	207	#else
141	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
142	# define inline static	210	# define inline_size static
		211	# define noinline
143	#endif	212	#endif
144		213
145	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
147		216
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
151	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
154		226
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		228
		229	#ifdef _WIN32
157	#include "ev_win32.c"	230	# include "ev_win32.c"
		231	#endif
158		232
159	/*****************************************************************************/	233	/*****************************************************************************/
160		234
161	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
162		236
		237	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	239	{
165	syserr_cb = cb;	240	syserr_cb = cb;
166	}	241	}
167		242
168	static void	243	static void noinline
169	syserr (const char *msg)	244	syserr (const char *msg)
170	{	245	{
171	if (!msg)	246	if (!msg)
172	msg = "(libev) system error";	247	msg = "(libev) system error";
173		248
…		…
180	}	255	}
181	}	256	}
182		257
183	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, long size);
184		259
		260	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	262	{
187	alloc = cb;	263	alloc = cb;
188	}	264	}
189		265
190	static void *	266	static void *
…		…
209	typedef struct	285	typedef struct
210	{	286	{
211	WL head;	287	WL head;
212	unsigned char events;	288	unsigned char events;
213	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
214	} ANFD;	293	} ANFD;
215		294
216	typedef struct	295	typedef struct
217	{	296	{
218	W w;	297	W w;
…		…
221		300
222	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
223		302
224	struct ev_loop	303	struct ev_loop
225	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	308	#include "ev_vars.h"
228	#undef VAR	309	#undef VAR
229	};	310	};
230	#include "ev_wrap.h"	311	#include "ev_wrap.h"
231		312
232	struct ev_loop default_loop_struct;	313	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	314	struct ev_loop *ev_default_loop_ptr;
234		315
235	#else	316	#else
236		317
		318	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	320	#include "ev_vars.h"
239	#undef VAR	321	#undef VAR
240		322
241	static int default_loop;	323	static int ev_default_loop_ptr;
242		324
243	#endif	325	#endif
244		326
245	/*****************************************************************************/	327	/*****************************************************************************/
246		328
247	inline ev_tstamp	329	ev_tstamp
248	ev_time (void)	330	ev_time (void)
249	{	331	{
250	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
251	struct timespec ts;	333	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	340	#endif
259	}	341	}
260		342
261	inline ev_tstamp	343	ev_tstamp inline_size
262	get_clock (void)	344	get_clock (void)
263	{	345	{
264	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
266	{	348	{
…		…
271	#endif	353	#endif
272		354
273	return ev_time ();	355	return ev_time ();
274	}	356	}
275		357
		358	#if EV_MULTIPLICITY
276	ev_tstamp	359	ev_tstamp
277	ev_now (EV_P)	360	ev_now (EV_P)
278	{	361	{
279	return rt_now;	362	return ev_rt_now;
280	}	363	}
		364	#endif
281		365
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		367
284	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
286	{ \	370	{ \
287	int newcnt = cur; \	371	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	389	}
306		390
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		393
315	/*****************************************************************************/	394	/*****************************************************************************/
316		395
317	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
318	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
319	{	426	{
320	while (count--)	427	while (count--)
321	{	428	{
322	base->head = 0;	429	base->head = 0;
…		…
325		432
326	++base;	433	++base;
327	}	434	}
328	}	435	}
329		436
330	void	437	void inline_speed
331	ev_feed_event (EV_P_ void *w, int revents)
332	{
333	W w_ = (W)w;
334
335	if (w_->pending)
336	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338	return;
339	}
340
341	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}
346
347	static void
348	queue_events (EV_P_ W *events, int eventcnt, int type)
349	{
350	int i;
351
352	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);
354	}
355
356	inline void
357	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
358	{	439	{
359	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	441	ev_io *w;
361		442
362	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	443	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363	{	444	{
364	int ev = w->events & revents;	445	int ev = w->events & revents;
365		446
366	if (ev)	447	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	454	{
374	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
375	}	456	}
376		457
377	/*****************************************************************************/	458	void inline_size
378
379	static void
380	fd_reify (EV_P)	459	fd_reify (EV_P)
381	{	460	{
382	int i;	461	int i;
383		462
384	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
385	{	464	{
386	int fd = fdchanges [i];	465	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	467	ev_io *w;
389		468
390	int events = 0;	469	int events = 0;
391		470
392	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393	events |= w->events;	472	events |= w->events;
394		473
		474	#if EV_SELECT_IS_WINSOCKET
		475	if (events)
		476	{
		477	unsigned long argp;
		478	anfd->handle = _get_osfhandle (fd);
		479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		480	}
		481	#endif
		482
395	anfd->reify = 0;	483	anfd->reify = 0;
396		484
397	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	486	anfd->events = events;
399	}	487	}
400		488
401	fdchangecnt = 0;	489	fdchangecnt = 0;
402	}	490	}
403		491
404	static void	492	void inline_size
405	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
406	{	494	{
407	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
408	return;	496	return;
409		497
410	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
411		499
412	++fdchangecnt;	500	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
415	}	503	}
416		504
417	static void	505	void inline_speed
418	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
419	{	507	{
420	struct ev_io *w;	508	ev_io *w;
421		509
422	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
423	{	511	{
424	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426	}	514	}
427	}	515	}
428		516
429	static int	517	int inline_size
430	fd_valid (int fd)	518	fd_valid (int fd)
431	{	519	{
432	#ifdef WIN32	520	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
434	#else	522	#else
435	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
436	#endif	524	#endif
437	}	525	}
438		526
439	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
440	static void	528	static void noinline
441	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
442	{	530	{
443	int fd;	531	int fd;
444		532
445	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
449	}	537	}
450		538
451	/* called on ENOMEM in select/poll to kill some fds and retry */	539	/* called on ENOMEM in select/poll to kill some fds and retry */
452	static void	540	static void noinline
453	fd_enomem (EV_P)	541	fd_enomem (EV_P)
454	{	542	{
455	int fd;	543	int fd;
456		544
457	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
461	return;	549	return;
462	}	550	}
463	}	551	}
464		552
465	/* usually called after fork if method needs to re-arm all fds from scratch */	553	/* usually called after fork if backend needs to re-arm all fds from scratch */
466	static void	554	static void noinline
467	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
468	{	556	{
469	int fd;	557	int fd;
470		558
471	/* this should be highly optimised to not do anything but set a flag */	559	/* this should be highly optimised to not do anything but set a flag */
…		…
477	}	565	}
478	}	566	}
479		567
480	/*****************************************************************************/	568	/*****************************************************************************/
481		569
482	static void	570	void inline_speed
483	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
484	{	572	{
485	WT w = heap [k];	573	WT w = heap [k];
486		574
487	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	582	heap [k] = w;
495	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
496		584
497	}	585	}
498		586
499	static void	587	void inline_speed
500	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
501	{	589	{
502	WT w = heap [k];	590	WT w = heap [k];
503		591
504	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
518		606
519	heap [k] = w;	607	heap [k] = w;
520	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
521	}	609	}
522		610
		611	void inline_size
		612	adjustheap (WT *heap, int N, int k)
		613	{
		614	upheap (heap, k);
		615	downheap (heap, N, k);
		616	}
		617
523	/*****************************************************************************/	618	/*****************************************************************************/
524		619
525	typedef struct	620	typedef struct
526	{	621	{
527	WL head;	622	WL head;
…		…
531	static ANSIG *signals;	626	static ANSIG *signals;
532	static int signalmax;	627	static int signalmax;
533		628
534	static int sigpipe [2];	629	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	631	static ev_io sigev;
537		632
538	static void	633	void inline_size
539	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
540	{	635	{
541	while (count--)	636	while (count--)
542	{	637	{
543	base->head = 0;	638	base->head = 0;
…		…
548	}	643	}
549		644
550	static void	645	static void
551	sighandler (int signum)	646	sighandler (int signum)
552	{	647	{
553	#if WIN32	648	#if _WIN32
554	signal (signum, sighandler);	649	signal (signum, sighandler);
555	#endif	650	#endif
556		651
557	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
558		653
559	if (!gotsig)	654	if (!gotsig)
560	{	655	{
561	int old_errno = errno;	656	int old_errno = errno;
562	gotsig = 1;	657	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	659	errno = old_errno;
569	}	660	}
570	}	661	}
571		662
572	void	663	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
574	{	665	{
575	WL w;	666	WL w;
576		667
577	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
578	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
579	#endif	670	#endif
580		671
581	--signum;	672	--signum;
582		673
583	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	681	}
591		682
592	static void	683	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
594	{	685	{
595	int signum;	686	int signum;
596		687
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	689	gotsig = 0;
603		690
604	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
607	}	694	}
608		695
609	static void	696	void inline_size
		697	fd_intern (int fd)
		698	{
		699	#ifdef _WIN32
		700	int arg = 1;
		701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		702	#else
		703	fcntl (fd, F_SETFD, FD_CLOEXEC);
		704	fcntl (fd, F_SETFL, O_NONBLOCK);
		705	#endif
		706	}
		707
		708	static void noinline
610	siginit (EV_P)	709	siginit (EV_P)
611	{	710	{
612	#ifndef WIN32	711	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
614	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
615
616	/* rather than sort out wether we really need nb, set it */
617	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
618	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
619	#endif
620		713
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	717	}
625		718
626	/*****************************************************************************/	719	/*****************************************************************************/
627		720
628	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
629		722
630	#ifndef WIN32	723	#ifndef _WIN32
631		724
632	static struct ev_signal childev;	725	static ev_signal childev;
633		726
634	#ifndef WCONTINUED	727	void inline_speed
635	# define WCONTINUED 0
636	#endif
637
638	static void
639	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
640	{	729	{
641	struct ev_child *w;	730	ev_child *w;
642		731
643	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
644	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
645	{	734	{
646	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647	w->rpid = pid;	736	w->rpid = pid;
648	w->rstatus = status;	737	w->rstatus = status;
649	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
650	}	739	}
651	}	740	}
652		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
653	static void	746	static void
654	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
655	{	748	{
656	int pid, status;	749	int pid, status;
657		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
660	/* make sure we are called again until all childs have been reaped */	758	/* make sure we are called again until all childs have been reaped */
		759	/* we need to do it this way so that the callback gets called before we continue */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		761
663	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
664	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	764	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
665	}
666	}	765	}
667		766
668	#endif	767	#endif
669		768
670	/*****************************************************************************/	769	/*****************************************************************************/
671		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
672	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
674	#endif	776	#endif
675	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
693	{	795	{
694	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
695	}	797	}
696		798
697	/* return true if we are running with elevated privileges and should ignore env variables */	799	/* return true if we are running with elevated privileges and should ignore env variables */
698	static int	800	int inline_size
699	enable_secure (void)	801	enable_secure (void)
700	{	802	{
701	#ifdef WIN32	803	#ifdef _WIN32
702	return 0;	804	return 0;
703	#else	805	#else
704	return getuid () != geteuid ()	806	return getuid () != geteuid ()
705	|| getgid () != getegid ();	807	|| getgid () != getegid ();
706	#endif	808	#endif
707	}	809	}
708		810
709	int	811	unsigned int
710	ev_method (EV_P)	812	ev_supported_backends (void)
711	{	813	{
712	return method;	814	unsigned int flags = 0;
		815
		816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		817	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		818	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		819	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		820	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		821
		822	return flags;
		823	}
		824
		825	unsigned int
		826	ev_recommended_backends (void)
		827	{
		828	unsigned int flags = ev_supported_backends ();
		829
		830	#ifndef __NetBSD__
		831	/* kqueue is borked on everything but netbsd apparently */
		832	/* it usually doesn't work correctly on anything but sockets and pipes */
		833	flags &= ~EVBACKEND_KQUEUE;
		834	#endif
		835	#ifdef __APPLE__
		836	// flags &= ~EVBACKEND_KQUEUE; for documentation
		837	flags &= ~EVBACKEND_POLL;
		838	#endif
		839
		840	return flags;
		841	}
		842
		843	unsigned int
		844	ev_embeddable_backends (void)
		845	{
		846	return EVBACKEND_EPOLL
		847	| EVBACKEND_KQUEUE
		848	| EVBACKEND_PORT;
		849	}
		850
		851	unsigned int
		852	ev_backend (EV_P)
		853	{
		854	return backend;
713	}	855	}
714		856
715	static void	857	static void
716	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
717	{	859	{
718	if (!method)	860	if (!backend)
719	{	861	{
720	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
721	{	863	{
722	struct timespec ts;	864	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	866	have_monotonic = 1;
725	}	867	}
726	#endif	868	#endif
727		869
728	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	871	mn_now = get_clock ();
730	now_floor = mn_now;	872	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
732		874
733	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
734	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		879
739	method = 0;	880	if (!(flags & 0x0000ffffUL))
740	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
741	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
742	#endif	886	#endif
743	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	889	#endif
746	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	892	#endif
749	#if EV_USE_POLL	893	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	895	#endif
752	#if EV_USE_SELECT	896	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	898	#endif
755		899
756	ev_watcher_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
758	}	902	}
759	}	903	}
760		904
761	void	905	static void
762	loop_destroy (EV_P)	906	loop_destroy (EV_P)
763	{	907	{
764	int i;	908	int i;
765		909
766	#if EV_USE_WIN32	910	#if EV_USE_PORT
767	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
768	#endif	912	#endif
769	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	915	#endif
772	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	918	#endif
775	#if EV_USE_POLL	919	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	921	#endif
778	#if EV_USE_SELECT	922	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	924	#endif
781		925
782	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
783	array_free (pending, [i]);	927	array_free (pending, [i]);
784		928
785	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
787	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
788	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
790	array_free_microshit (prepare);	934	#endif
791	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
792		938
793	method = 0;	939	backend = 0;
794	}	940	}
795		941
796	static void	942	static void
797	loop_fork (EV_P)	943	loop_fork (EV_P)
798	{	944	{
		945	#if EV_USE_PORT
		946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		947	#endif
		948	#if EV_USE_KQUEUE
		949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		950	#endif
799	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801	#endif
802	#if EV_USE_KQUEUE
803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
804	#endif	953	#endif
805		954
806	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
807	{	956	{
808	/* default loop */	957	/* default loop */
…		…
821	postfork = 0;	970	postfork = 0;
822	}	971	}
823		972
824	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
825	struct ev_loop *	974	struct ev_loop *
826	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
827	{	976	{
828	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	977	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
829		978
830	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
831		980
832	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
833		982
834	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
835	return loop;	984	return loop;
836		985
837	return 0;	986	return 0;
838	}	987	}
839		988
…		…
852		1001
853	#endif	1002	#endif
854		1003
855	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
856	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
857	#else	1007	#else
858	int	1008	int
		1009	ev_default_loop (unsigned int flags)
859	#endif	1010	#endif
860	ev_default_loop (int methods)
861	{	1011	{
862	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
864	return 0;	1014	return 0;
865		1015
866	if (!default_loop)	1016	if (!ev_default_loop_ptr)
867	{	1017	{
868	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1020	#else
871	default_loop = 1;	1021	ev_default_loop_ptr = 1;
872	#endif	1022	#endif
873		1023
874	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
875		1025
876	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
877	{	1027	{
878	siginit (EV_A);	1028	siginit (EV_A);
879		1029
880	#ifndef WIN32	1030	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1035	#endif
886	}	1036	}
887	else	1037	else
888	default_loop = 0;	1038	ev_default_loop_ptr = 0;
889	}	1039	}
890		1040
891	return default_loop;	1041	return ev_default_loop_ptr;
892	}	1042	}
893		1043
894	void	1044	void
895	ev_default_destroy (void)	1045	ev_default_destroy (void)
896	{	1046	{
897	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1049	#endif
900		1050
901	#ifndef WIN32	1051	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
904	#endif	1054	#endif
905		1055
906	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
914		1064
915	void	1065	void
916	ev_default_fork (void)	1066	ev_default_fork (void)
917	{	1067	{
918	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1070	#endif
921		1071
922	if (method)	1072	if (backend)
923	postfork = 1;	1073	postfork = 1;
924	}	1074	}
925		1075
926	/*****************************************************************************/	1076	/*****************************************************************************/
927		1077
928	static int	1078	int inline_size
929	any_pending (EV_P)	1079	any_pending (EV_P)
930	{	1080	{
931	int pri;	1081	int pri;
932		1082
933	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
935	return 1;	1085	return 1;
936		1086
937	return 0;	1087	return 0;
938	}	1088	}
939		1089
940	static void	1090	void inline_speed
941	call_pending (EV_P)	1091	call_pending (EV_P)
942	{	1092	{
943	int pri;	1093	int pri;
944		1094
945	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
947	{	1097	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1099
950	if (p->w)	1100	if (expect_true (p->w))
951	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
952	p->w->pending = 0;	1104	p->w->pending = 0;
953	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
954	}	1106	}
955	}	1107	}
956	}	1108	}
957		1109
958	static void	1110	void inline_size
959	timers_reify (EV_P)	1111	timers_reify (EV_P)
960	{	1112	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1114	{
963	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
964		1116
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
966		1118
967	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
968	if (w->repeat)	1120	if (w->repeat)
969	{	1121	{
970	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1123
971	((WT)w)->at = mn_now + w->repeat;	1124	((WT)w)->at += w->repeat;
		1125	if (((WT)w)->at < mn_now)
		1126	((WT)w)->at = mn_now;
		1127
972	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
973	}	1129	}
974	else	1130	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1132
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1134	}
979	}	1135	}
980		1136
981	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
982	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
983	{	1140	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1142	{
986	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
987		1144
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
989		1146
990	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
992	{	1149	{
993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
994
995	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
997	}	1153	}
998	else if (w->interval)	1154	else if (w->interval)
999	{	1155	{
1000	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1001	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1002	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
1003	}	1159	}
1004	else	1160	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1162
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1164	}
1009	}	1165	}
1010		1166
1011	static void	1167	static void noinline
1012	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1013	{	1169	{
1014	int i;	1170	int i;
1015		1171
1016	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1018	{	1174	{
1019	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1020		1176
1021	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1179	else if (w->interval)
1024	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1025	}	1181	}
1026		1182
1027	/* now rebuild the heap */	1183	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1030	}	1186	}
		1187	#endif
1031		1188
1032	inline int	1189	int inline_size
1033	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1034	{	1191	{
1035	mn_now = get_clock ();	1192	mn_now = get_clock ();
1036		1193
1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038	{	1195	{
1039	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
1040	return 0;	1197	return 0;
1041	}	1198	}
1042	else	1199	else
1043	{	1200	{
1044	now_floor = mn_now;	1201	now_floor = mn_now;
1045	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1046	return 1;	1203	return 1;
1047	}	1204	}
1048	}	1205	}
1049		1206
1050	static void	1207	void inline_size
1051	time_update (EV_P)	1208	time_update (EV_P)
1052	{	1209	{
1053	int i;	1210	int i;
1054		1211
1055	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1057	{	1214	{
1058	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1059	{	1216	{
1060	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1061		1218
1062	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1219	/* loop a few times, before making important decisions.
		1220	* on the choice of "4": one iteration isn't enough,
		1221	* in case we get preempted during the calls to
		1222	* ev_time and get_clock. a second call is almost guarenteed
		1223	* to succeed in that case, though. and looping a few more times
		1224	* doesn't hurt either as we only do this on time-jumps or
		1225	* in the unlikely event of getting preempted here.
		1226	*/
		1227	for (i = 4; --i; )
1063	{	1228	{
1064	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1065		1230
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1232	return; /* all is well */
1068		1233
1069	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1235	mn_now = get_clock ();
1071	now_floor = mn_now;	1236	now_floor = mn_now;
1072	}	1237	}
1073		1238
		1239	# if EV_PERIODIC_ENABLE
1074	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1077	}	1244	}
1078	}	1245	}
1079	else	1246	else
1080	#endif	1247	#endif
1081	{	1248	{
1082	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1083		1250
1084	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1085	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1087		1256
1088	/* adjust timers. this is easy, as the offset is the same for all */	1257	/* adjust timers. this is easy, as the offset is the same for all */
1089	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1090	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1091	}	1260	}
1092		1261
1093	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1094	}	1263	}
1095	}	1264	}
1096		1265
1097	void	1266	void
1098	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1109	static int loop_done;	1278	static int loop_done;
1110		1279
1111	void	1280	void
1112	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1113	{	1282	{
1114	double block;
1115	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1116		1286
1117	do	1287	while (activecnt)
1118	{	1288	{
		1289	/* we might have forked, so reify kernel state if necessary */
		1290	#if EV_FORK_ENABLE
		1291	if (expect_false (postfork))
		1292	if (forkcnt)
		1293	{
		1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1295	call_pending (EV_A);
		1296	}
		1297	#endif
		1298
1119	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1120	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1121	{	1301	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1123	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1129		1309
1130	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1311	fd_reify (EV_A);
1132		1312
1133	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1134		1316
1135	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1136	always have timers, we just calculate it always */	1318	block = 0.; /* do not block at all */
		1319	else
		1320	{
		1321	/* update time to cancel out callback processing overhead */
1137	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1140	else	1325	else
1141	#endif	1326	#endif
1142	{	1327	{
1143	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1144	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1145	}	1330	}
1146		1331
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1152		1333
1153	if (timercnt)	1334	if (timercnt)
1154	{	1335	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1337	if (block > to) block = to;
1157	}	1338	}
1158		1339
		1340	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1341	if (periodiccnt)
1160	{	1342	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1344	if (block > to) block = to;
1163	}	1345	}
		1346	#endif
1164		1347
1165	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1166	}	1349	}
1167		1350
1168	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1169		1353
1170	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1355	time_update (EV_A);
1172		1356
1173	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1176		1362
1177	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1180		1366
1181	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1368	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1370
1185	call_pending (EV_A);	1371	call_pending (EV_A);
1186	}
1187	while (activecnt && !loop_done);
1188		1372
1189	if (loop_done != 2)	1373	if (expect_false (loop_done))
1190	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1191	}	1379	}
1192		1380
1193	void	1381	void
1194	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1195	{	1383	{
1196	loop_done = how;	1384	loop_done = how;
1197	}	1385	}
1198		1386
1199	/*****************************************************************************/	1387	/*****************************************************************************/
1200		1388
1201	inline void	1389	void inline_size
1202	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1203	{	1391	{
1204	elem->next = *head;	1392	elem->next = *head;
1205	*head = elem;	1393	*head = elem;
1206	}	1394	}
1207		1395
1208	inline void	1396	void inline_size
1209	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1210	{	1398	{
1211	while (*head)	1399	while (*head)
1212	{	1400	{
1213	if (*head == elem)	1401	if (*head == elem)
…		…
1218		1406
1219	head = &(*head)->next;	1407	head = &(*head)->next;
1220	}	1408	}
1221	}	1409	}
1222		1410
1223	inline void	1411	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1225	{	1413	{
1226	if (w->pending)	1414	if (w->pending)
1227	{	1415	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1417	w->pending = 0;
1230	}	1418	}
1231	}	1419	}
1232		1420
1233	inline void	1421	void inline_speed
1234	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1235	{	1423	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238		1426
1239	w->active = active;	1427	w->active = active;
1240	ev_ref (EV_A);	1428	ev_ref (EV_A);
1241	}	1429	}
1242		1430
1243	inline void	1431	void inline_size
1244	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1245	{	1433	{
1246	ev_unref (EV_A);	1434	ev_unref (EV_A);
1247	w->active = 0;	1435	w->active = 0;
1248	}	1436	}
1249		1437
1250	/*****************************************************************************/	1438	/*****************************************************************************/
1251		1439
1252	void	1440	void
1253	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1254	{	1442	{
1255	int fd = w->fd;	1443	int fd = w->fd;
1256		1444
1257	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1258	return;	1446	return;
1259		1447
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1449
1262	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1265		1453
1266	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1267	}	1455	}
1268		1456
1269	void	1457	void
1270	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1271	{	1459	{
1272	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1274	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1275		1465
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1278		1468
1279	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1280	}	1470	}
1281		1471
1282	void	1472	void
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1474	{
1285	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1286	return;	1476	return;
1287		1477
1288	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1289		1479
1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291		1481
1292	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1295	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1296		1486
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1298	}	1488	}
1299		1489
1300	void	1490	void
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1302	{	1492	{
1303	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1305	return;	1495	return;
1306		1496
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1308		1498
1309	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1310	{	1500	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1313	}	1503	}
1314		1504
1315	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1316		1506
1317	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1318	}	1508	}
1319		1509
1320	void	1510	void
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1512	{
1323	if (ev_is_active (w))	1513	if (ev_is_active (w))
1324	{	1514	{
1325	if (w->repeat)	1515	if (w->repeat)
1326	{	1516	{
1327	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1519	}
1330	else	1520	else
1331	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1332	}	1522	}
1333	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1335	}	1528	}
1336		1529
		1530	#if EV_PERIODIC_ENABLE
1337	void	1531	void
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1533	{
1340	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1341	return;	1535	return;
1342		1536
1343	if (w->reschedule_cb)	1537	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1539	else if (w->interval)
1346	{	1540	{
1347	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1348	/* this formula differs from the one in periodic_reify because we do not always round up */	1542	/* this formula differs from the one in periodic_reify because we do not always round up */
1349	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1350	}	1544	}
1351		1545
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1356		1550
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1358	}	1552	}
1359		1553
1360	void	1554	void
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1362	{	1556	{
1363	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1365	return;	1559	return;
1366		1560
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1368		1562
1369	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1370	{	1564	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1373	}	1567	}
1374		1568
1375	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1376	}	1570	}
1377		1571
1378	void	1572	void
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1574	{
		1575	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1576	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1577	ev_periodic_start (EV_A_ w);
1383	}	1578	}
1384		1579	#endif
1385	void
1386	ev_idle_start (EV_P_ struct ev_idle *w)
1387	{
1388	if (ev_is_active (w))
1389	return;
1390
1391	ev_start (EV_A_ (W)w, ++idlecnt);
1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1393	idles [idlecnt - 1] = w;
1394	}
1395
1396	void
1397	ev_idle_stop (EV_P_ struct ev_idle *w)
1398	{
1399	ev_clear_pending (EV_A_ (W)w);
1400	if (ev_is_active (w))
1401	return;
1402
1403	idles [((W)w)->active - 1] = idles [--idlecnt];
1404	ev_stop (EV_A_ (W)w);
1405	}
1406
1407	void
1408	ev_prepare_start (EV_P_ struct ev_prepare *w)
1409	{
1410	if (ev_is_active (w))
1411	return;
1412
1413	ev_start (EV_A_ (W)w, ++preparecnt);
1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1415	prepares [preparecnt - 1] = w;
1416	}
1417
1418	void
1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1420	{
1421	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))
1423	return;
1424
1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1426	ev_stop (EV_A_ (W)w);
1427	}
1428
1429	void
1430	ev_check_start (EV_P_ struct ev_check *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++checkcnt);
1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1437	checks [checkcnt - 1] = w;
1438	}
1439
1440	void
1441	ev_check_stop (EV_P_ struct ev_check *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	checks [((W)w)->active - 1] = checks [--checkcnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450		1580
1451	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1582	# define SA_RESTART 0
1453	#endif	1583	#endif
1454		1584
1455	void	1585	void
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1587	{
1458	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1459	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1460	#endif	1590	#endif
1461	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1462	return;	1592	return;
1463		1593
1464	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1465		1595
1466	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1469		1599
1470	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1471	{	1601	{
1472	#if WIN32	1602	#if _WIN32
1473	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1474	#else	1604	#else
1475	struct sigaction sa;	1605	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1480	#endif	1610	#endif
1481	}	1611	}
1482	}	1612	}
1483		1613
1484	void	1614	void
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1616	{
1487	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1489	return;	1619	return;
1490		1620
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1493		1623
1494	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1496	}	1626	}
1497		1627
1498	void	1628	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1500	{	1630	{
1501	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1502	assert (("child watchers are only supported in the default loop", loop == default_loop));	1632	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1633	#endif
1504	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1505	return;	1635	return;
1506		1636
1507	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1509	}	1639	}
1510		1640
1511	void	1641	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1513	{	1643	{
1514	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1516	return;	1646	return;
1517		1647
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1520	}	1650	}
1521		1651
		1652	#if EV_STAT_ENABLE
		1653
		1654	# ifdef _WIN32
		1655	# undef lstat
		1656	# define lstat(a,b) _stati64 (a,b)
		1657	# endif
		1658
		1659	#define DEF_STAT_INTERVAL 5.0074891
		1660	#define MIN_STAT_INTERVAL 0.1074891
		1661
		1662	void
		1663	ev_stat_stat (EV_P_ ev_stat *w)
		1664	{
		1665	if (lstat (w->path, &w->attr) < 0)
		1666	w->attr.st_nlink = 0;
		1667	else if (!w->attr.st_nlink)
		1668	w->attr.st_nlink = 1;
		1669	}
		1670
		1671	static void
		1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1673	{
		1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1675
		1676	/* we copy this here each the time so that */
		1677	/* prev has the old value when the callback gets invoked */
		1678	w->prev = w->attr;
		1679	ev_stat_stat (EV_A_ w);
		1680
		1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1682	ev_feed_event (EV_A_ w, EV_STAT);
		1683	}
		1684
		1685	void
		1686	ev_stat_start (EV_P_ ev_stat *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	/* since we use memcmp, we need to clear any padding data etc. */
		1692	memset (&w->prev, 0, sizeof (ev_statdata));
		1693	memset (&w->attr, 0, sizeof (ev_statdata));
		1694
		1695	ev_stat_stat (EV_A_ w);
		1696
		1697	if (w->interval < MIN_STAT_INTERVAL)
		1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1699
		1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1701	ev_set_priority (&w->timer, ev_priority (w));
		1702	ev_timer_start (EV_A_ &w->timer);
		1703
		1704	ev_start (EV_A_ (W)w, 1);
		1705	}
		1706
		1707	void
		1708	ev_stat_stop (EV_P_ ev_stat *w)
		1709	{
		1710	ev_clear_pending (EV_A_ (W)w);
		1711	if (expect_false (!ev_is_active (w)))
		1712	return;
		1713
		1714	ev_timer_stop (EV_A_ &w->timer);
		1715
		1716	ev_stop (EV_A_ (W)w);
		1717	}
		1718	#endif
		1719
		1720	void
		1721	ev_idle_start (EV_P_ ev_idle *w)
		1722	{
		1723	if (expect_false (ev_is_active (w)))
		1724	return;
		1725
		1726	ev_start (EV_A_ (W)w, ++idlecnt);
		1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1728	idles [idlecnt - 1] = w;
		1729	}
		1730
		1731	void
		1732	ev_idle_stop (EV_P_ ev_idle *w)
		1733	{
		1734	ev_clear_pending (EV_A_ (W)w);
		1735	if (expect_false (!ev_is_active (w)))
		1736	return;
		1737
		1738	{
		1739	int active = ((W)w)->active;
		1740	idles [active - 1] = idles [--idlecnt];
		1741	((W)idles [active - 1])->active = active;
		1742	}
		1743
		1744	ev_stop (EV_A_ (W)w);
		1745	}
		1746
		1747	void
		1748	ev_prepare_start (EV_P_ ev_prepare *w)
		1749	{
		1750	if (expect_false (ev_is_active (w)))
		1751	return;
		1752
		1753	ev_start (EV_A_ (W)w, ++preparecnt);
		1754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1755	prepares [preparecnt - 1] = w;
		1756	}
		1757
		1758	void
		1759	ev_prepare_stop (EV_P_ ev_prepare *w)
		1760	{
		1761	ev_clear_pending (EV_A_ (W)w);
		1762	if (expect_false (!ev_is_active (w)))
		1763	return;
		1764
		1765	{
		1766	int active = ((W)w)->active;
		1767	prepares [active - 1] = prepares [--preparecnt];
		1768	((W)prepares [active - 1])->active = active;
		1769	}
		1770
		1771	ev_stop (EV_A_ (W)w);
		1772	}
		1773
		1774	void
		1775	ev_check_start (EV_P_ ev_check *w)
		1776	{
		1777	if (expect_false (ev_is_active (w)))
		1778	return;
		1779
		1780	ev_start (EV_A_ (W)w, ++checkcnt);
		1781	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1782	checks [checkcnt - 1] = w;
		1783	}
		1784
		1785	void
		1786	ev_check_stop (EV_P_ ev_check *w)
		1787	{
		1788	ev_clear_pending (EV_A_ (W)w);
		1789	if (expect_false (!ev_is_active (w)))
		1790	return;
		1791
		1792	{
		1793	int active = ((W)w)->active;
		1794	checks [active - 1] = checks [--checkcnt];
		1795	((W)checks [active - 1])->active = active;
		1796	}
		1797
		1798	ev_stop (EV_A_ (W)w);
		1799	}
		1800
		1801	#if EV_EMBED_ENABLE
		1802	void noinline
		1803	ev_embed_sweep (EV_P_ ev_embed *w)
		1804	{
		1805	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1806	}
		1807
		1808	static void
		1809	embed_cb (EV_P_ ev_io *io, int revents)
		1810	{
		1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1812
		1813	if (ev_cb (w))
		1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1815	else
		1816	ev_embed_sweep (loop, w);
		1817	}
		1818
		1819	void
		1820	ev_embed_start (EV_P_ ev_embed *w)
		1821	{
		1822	if (expect_false (ev_is_active (w)))
		1823	return;
		1824
		1825	{
		1826	struct ev_loop *loop = w->loop;
		1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1829	}
		1830
		1831	ev_set_priority (&w->io, ev_priority (w));
		1832	ev_io_start (EV_A_ &w->io);
		1833
		1834	ev_start (EV_A_ (W)w, 1);
		1835	}
		1836
		1837	void
		1838	ev_embed_stop (EV_P_ ev_embed *w)
		1839	{
		1840	ev_clear_pending (EV_A_ (W)w);
		1841	if (expect_false (!ev_is_active (w)))
		1842	return;
		1843
		1844	ev_io_stop (EV_A_ &w->io);
		1845
		1846	ev_stop (EV_A_ (W)w);
		1847	}
		1848	#endif
		1849
		1850	#if EV_FORK_ENABLE
		1851	void
		1852	ev_fork_start (EV_P_ ev_fork *w)
		1853	{
		1854	if (expect_false (ev_is_active (w)))
		1855	return;
		1856
		1857	ev_start (EV_A_ (W)w, ++forkcnt);
		1858	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1859	forks [forkcnt - 1] = w;
		1860	}
		1861
		1862	void
		1863	ev_fork_stop (EV_P_ ev_fork *w)
		1864	{
		1865	ev_clear_pending (EV_A_ (W)w);
		1866	if (expect_false (!ev_is_active (w)))
		1867	return;
		1868
		1869	{
		1870	int active = ((W)w)->active;
		1871	forks [active - 1] = forks [--forkcnt];
		1872	((W)forks [active - 1])->active = active;
		1873	}
		1874
		1875	ev_stop (EV_A_ (W)w);
		1876	}
		1877	#endif
		1878
1522	/*****************************************************************************/	1879	/*****************************************************************************/
1523		1880
1524	struct ev_once	1881	struct ev_once
1525	{	1882	{
1526	struct ev_io io;	1883	ev_io io;
1527	struct ev_timer to;	1884	ev_timer to;
1528	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1529	void *arg;	1886	void *arg;
1530	};	1887	};
1531		1888
1532	static void	1889	static void
…		…
1541		1898
1542	cb (revents, arg);	1899	cb (revents, arg);
1543	}	1900	}
1544		1901
1545	static void	1902	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	1904	{
1548	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1905	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1549	}	1906	}
1550		1907
1551	static void	1908	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	1910	{
1554	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1911	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1555	}	1912	}
1556		1913
1557	void	1914	void
1558	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1915	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1559	{	1916	{
1560	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561		1918
1562	if (!once)	1919	if (expect_false (!once))
		1920	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	1922	return;
1565	{	1923	}
		1924
1566	once->cb = cb;	1925	once->cb = cb;
1567	once->arg = arg;	1926	once->arg = arg;
1568		1927
1569	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	1929	if (fd >= 0)
1571	{	1930	{
1572	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1574	}	1933	}
1575		1934
1576	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	1936	if (timeout >= 0.)
1578	{	1937	{
1579	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	1940	}
1583	}	1941	}
1584		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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