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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 1.140 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
131	#ifdef EV_H	184	#ifdef EV_H
132	# include EV_H	185	# include EV_H
133	#else	186	#else
134	# include "ev.h"	187	# include "ev.h"
135	#endif	188	#endif
136		189
137	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
138	# 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
139	# 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
140	#else	200	#else
141	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
142	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
143	#endif	205	#endif
144		206
145	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
147		209
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
151	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
154		219
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		221
		222	#ifdef _WIN32
157	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
158		225
159	/*****************************************************************************/	226	/*****************************************************************************/
160		227
161	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
162		229
…		…
209	typedef struct	276	typedef struct
210	{	277	{
211	WL head;	278	WL head;
212	unsigned char events;	279	unsigned char events;
213	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
214	} ANFD;	284	} ANFD;
215		285
216	typedef struct	286	typedef struct
217	{	287	{
218	W w;	288	W w;
…		…
221		291
222	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
223		293
224	struct ev_loop	294	struct ev_loop
225	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	299	#include "ev_vars.h"
228	#undef VAR	300	#undef VAR
229	};	301	};
230	#include "ev_wrap.h"	302	#include "ev_wrap.h"
231		303
232	struct ev_loop default_loop_struct;	304	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	305	struct ev_loop *ev_default_loop_ptr;
234		306
235	#else	307	#else
236		308
		309	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	311	#include "ev_vars.h"
239	#undef VAR	312	#undef VAR
240		313
241	static int default_loop;	314	static int ev_default_loop_ptr;
242		315
243	#endif	316	#endif
244		317
245	/*****************************************************************************/	318	/*****************************************************************************/
246		319
247	inline ev_tstamp	320	ev_tstamp noinline
248	ev_time (void)	321	ev_time (void)
249	{	322	{
250	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
251	struct timespec ts;	324	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	331	#endif
259	}	332	}
260		333
261	inline ev_tstamp	334	ev_tstamp inline_size
262	get_clock (void)	335	get_clock (void)
263	{	336	{
264	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
266	{	339	{
…		…
271	#endif	344	#endif
272		345
273	return ev_time ();	346	return ev_time ();
274	}	347	}
275		348
		349	#if EV_MULTIPLICITY
276	ev_tstamp	350	ev_tstamp
277	ev_now (EV_P)	351	ev_now (EV_P)
278	{	352	{
279	return rt_now;	353	return ev_rt_now;
280	}	354	}
		355	#endif
281		356
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	357	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		358
284	#define array_needsize(type,base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
286	{ \	361	{ \
287	int newcnt = cur; \	362	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	380	}
306		381
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) \	382	#define array_free(stem, idx) \
313	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;
314		384
315	/*****************************************************************************/	385	/*****************************************************************************/
316		386
317	static void	387	void inline_size
318	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
319	{	389	{
320	while (count--)	390	while (count--)
321	{	391	{
322	base->head = 0;	392	base->head = 0;
…		…
325		395
326	++base;	396	++base;
327	}	397	}
328	}	398	}
329		399
330	void	400	void noinline
331	ev_feed_event (EV_P_ void *w, int revents)	401	ev_feed_event (EV_P_ void *w, int revents)
332	{	402	{
333	W w_ = (W)w;	403	W w_ = (W)w;
334		404
335	if (w_->pending)	405	if (expect_false (w_->pending))
336	{	406	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338	return;	408	return;
339	}	409	}
340		410
341	w_->pending = ++pendingcnt [ABSPRI (w_)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}	415	}
346		416
347	static void	417	static void
…		…
351		421
352	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
354	}	424	}
355		425
356	inline void	426	void inline_speed
357	fd_event (EV_P_ int fd, int revents)	427	fd_event (EV_P_ int fd, int revents)
358	{	428	{
359	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	430	ev_io *w;
361		431
362	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)
363	{	433	{
364	int ev = w->events & revents;	434	int ev = w->events & revents;
365		435
366	if (ev)	436	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
…		…
374	fd_event (EV_A_ fd, revents);	444	fd_event (EV_A_ fd, revents);
375	}	445	}
376		446
377	/*****************************************************************************/	447	/*****************************************************************************/
378		448
379	static void	449	void inline_size
380	fd_reify (EV_P)	450	fd_reify (EV_P)
381	{	451	{
382	int i;	452	int i;
383		453
384	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
385	{	455	{
386	int fd = fdchanges [i];	456	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	458	ev_io *w;
389		459
390	int events = 0;	460	int events = 0;
391		461
392	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)
393	events |= w->events;	463	events |= w->events;
394		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
395	anfd->reify = 0;	474	anfd->reify = 0;
396		475
397	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	477	anfd->events = events;
399	}	478	}
400		479
401	fdchangecnt = 0;	480	fdchangecnt = 0;
402	}	481	}
403		482
404	static void	483	void inline_size
405	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
406	{	485	{
407	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
408	return;	487	return;
409		488
410	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
411		490
412	++fdchangecnt;	491	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
415	}	494	}
416		495
417	static void	496	void inline_speed
418	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
419	{	498	{
420	struct ev_io *w;	499	ev_io *w;
421		500
422	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
423	{	502	{
424	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
425	ev_feed_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);
426	}	505	}
427	}	506	}
428		507
429	static int	508	int inline_size
430	fd_valid (int fd)	509	fd_valid (int fd)
431	{	510	{
432	#ifdef WIN32	511	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
434	#else	513	#else
435	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
436	#endif	515	#endif
437	}	516	}
438		517
439	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
440	static void	519	static void noinline
441	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
442	{	521	{
443	int fd;	522	int fd;
444		523
445	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
449	}	528	}
450		529
451	/* 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 */
452	static void	531	static void noinline
453	fd_enomem (EV_P)	532	fd_enomem (EV_P)
454	{	533	{
455	int fd;	534	int fd;
456		535
457	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
461	return;	540	return;
462	}	541	}
463	}	542	}
464		543
465	/* 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 */
466	static void	545	static void noinline
467	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
468	{	547	{
469	int fd;	548	int fd;
470		549
471	/* 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 */
…		…
477	}	556	}
478	}	557	}
479		558
480	/*****************************************************************************/	559	/*****************************************************************************/
481		560
482	static void	561	void inline_speed
483	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
484	{	563	{
485	WT w = heap [k];	564	WT w = heap [k];
486		565
487	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	573	heap [k] = w;
495	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
496		575
497	}	576	}
498		577
499	static void	578	void inline_speed
500	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
501	{	580	{
502	WT w = heap [k];	581	WT w = heap [k];
503		582
504	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
518		597
519	heap [k] = w;	598	heap [k] = w;
520	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
521	}	600	}
522		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
523	/*****************************************************************************/	609	/*****************************************************************************/
524		610
525	typedef struct	611	typedef struct
526	{	612	{
527	WL head;	613	WL head;
…		…
531	static ANSIG *signals;	617	static ANSIG *signals;
532	static int signalmax;	618	static int signalmax;
533		619
534	static int sigpipe [2];	620	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	622	static ev_io sigev;
537		623
538	static void	624	void inline_size
539	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
540	{	626	{
541	while (count--)	627	while (count--)
542	{	628	{
543	base->head = 0;	629	base->head = 0;
…		…
548	}	634	}
549		635
550	static void	636	static void
551	sighandler (int signum)	637	sighandler (int signum)
552	{	638	{
553	#if WIN32	639	#if _WIN32
554	signal (signum, sighandler);	640	signal (signum, sighandler);
555	#endif	641	#endif
556		642
557	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
558		644
559	if (!gotsig)	645	if (!gotsig)
560	{	646	{
561	int old_errno = errno;	647	int old_errno = errno;
562	gotsig = 1;	648	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	650	errno = old_errno;
569	}	651	}
570	}	652	}
571		653
572	void	654	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	655	ev_feed_signal_event (EV_P_ int signum)
574	{	656	{
575	WL w;	657	WL w;
576		658
577	#if EV_MULTIPLICITY	659	#if EV_MULTIPLICITY
578	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
579	#endif	661	#endif
580		662
581	--signum;	663	--signum;
582		664
583	if (signum < 0 || signum >= signalmax)	665	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	670	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	672	}
591		673
592	static void	674	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
594	{	676	{
595	int signum;	677	int signum;
596		678
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	680	gotsig = 0;
603		681
604	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	684	ev_feed_signal_event (EV_A_ signum + 1);
607	}	685	}
608		686
609	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
610	siginit (EV_P)	700	siginit (EV_P)
611	{	701	{
612	#ifndef WIN32	702	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	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		704
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	708	}
625		709
626	/*****************************************************************************/	710	/*****************************************************************************/
627		711
628	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
629		713
630	#ifndef WIN32	714	#ifndef _WIN32
631		715
632	static struct ev_signal childev;	716	static ev_signal childev;
633		717
634	#ifndef WCONTINUED	718	#ifndef WCONTINUED
635	# define WCONTINUED 0	719	# define WCONTINUED 0
636	#endif	720	#endif
637		721
638	static void	722	void inline_speed
639	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)
640	{	724	{
641	struct ev_child *w;	725	ev_child *w;
642		726
643	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)
644	if (w->pid == pid || !w->pid)	728	if (w->pid == pid || !w->pid)
645	{	729	{
646	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647	w->rpid = pid;	731	w->rpid = pid;
648	w->rstatus = status;	732	w->rstatus = status;
649	ev_feed_event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
650	}	734	}
651	}	735	}
652		736
653	static void	737	static void
654	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
655	{	739	{
656	int pid, status;	740	int pid, status;
657		741
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	743	{
660	/* 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 */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		747
663	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
664	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 */
665	}	750	}
666	}	751	}
667		752
668	#endif	753	#endif
669		754
670	/*****************************************************************************/	755	/*****************************************************************************/
671		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
672	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
674	#endif	762	#endif
675	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
693	{	781	{
694	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
695	}	783	}
696		784
697	/* 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 */
698	static int	786	int inline_size
699	enable_secure (void)	787	enable_secure (void)
700	{	788	{
701	#ifdef WIN32	789	#ifdef _WIN32
702	return 0;	790	return 0;
703	#else	791	#else
704	return getuid () != geteuid ()	792	return getuid () != geteuid ()
705	|| getgid () != getegid ();	793	|| getgid () != getegid ();
706	#endif	794	#endif
707	}	795	}
708		796
709	int	797	unsigned int
710	ev_method (EV_P)	798	ev_supported_backends (void)
711	{	799	{
712	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;
713	}	841	}
714		842
715	static void	843	static void
716	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
717	{	845	{
718	if (!method)	846	if (!backend)
719	{	847	{
720	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
721	{	849	{
722	struct timespec ts;	850	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	852	have_monotonic = 1;
725	}	853	}
726	#endif	854	#endif
727		855
728	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	857	mn_now = get_clock ();
730	now_floor = mn_now;	858	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
732		860
733	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
734	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		865
739	method = 0;	866	if (!(flags & 0x0000ffffUL))
740	#if EV_USE_WIN32	867	flags |= ev_recommended_backends ();
741	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);
742	#endif	872	#endif
743	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	875	#endif
746	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	878	#endif
749	#if EV_USE_POLL	879	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	881	#endif
752	#if EV_USE_SELECT	882	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	884	#endif
755		885
756	ev_watcher_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
758	}	888	}
759	}	889	}
760		890
761	void	891	static void
762	loop_destroy (EV_P)	892	loop_destroy (EV_P)
763	{	893	{
764	int i;	894	int i;
765		895
766	#if EV_USE_WIN32	896	#if EV_USE_PORT
767	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
768	#endif	898	#endif
769	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	901	#endif
772	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	904	#endif
775	#if EV_USE_POLL	905	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	907	#endif
778	#if EV_USE_SELECT	908	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	910	#endif
781		911
782	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
783	array_free (pending, [i]);	913	array_free (pending, [i]);
784		914
785	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
787	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
788	array_free_microshit (periodic);	918	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	919	array_free (periodic, EMPTY0);
790	array_free_microshit (prepare);	920	#endif
791	array_free_microshit (check);	921	array_free (idle, EMPTY0);
		922	array_free (prepare, EMPTY0);
		923	array_free (check, EMPTY0);
792		924
793	method = 0;	925	backend = 0;
794	}	926	}
795		927
796	static void	928	static void
797	loop_fork (EV_P)	929	loop_fork (EV_P)
798	{	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
799	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	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	939	#endif
805		940
806	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
807	{	942	{
808	/* default loop */	943	/* default loop */
…		…
821	postfork = 0;	956	postfork = 0;
822	}	957	}
823		958
824	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
825	struct ev_loop *	960	struct ev_loop *
826	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
827	{	962	{
828	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));
829		964
830	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
831		966
832	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
833		968
834	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
835	return loop;	970	return loop;
836		971
837	return 0;	972	return 0;
838	}	973	}
839		974
…		…
852		987
853	#endif	988	#endif
854		989
855	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
856	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
857	#else	993	#else
858	int	994	int
		995	ev_default_loop (unsigned int flags)
859	#endif	996	#endif
860	ev_default_loop (int methods)
861	{	997	{
862	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	999	if (pipe (sigpipe))
864	return 0;	1000	return 0;
865		1001
866	if (!default_loop)	1002	if (!ev_default_loop_ptr)
867	{	1003	{
868	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1006	#else
871	default_loop = 1;	1007	ev_default_loop_ptr = 1;
872	#endif	1008	#endif
873		1009
874	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
875		1011
876	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
877	{	1013	{
878	siginit (EV_A);	1014	siginit (EV_A);
879		1015
880	#ifndef WIN32	1016	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1021	#endif
886	}	1022	}
887	else	1023	else
888	default_loop = 0;	1024	ev_default_loop_ptr = 0;
889	}	1025	}
890		1026
891	return default_loop;	1027	return ev_default_loop_ptr;
892	}	1028	}
893		1029
894	void	1030	void
895	ev_default_destroy (void)	1031	ev_default_destroy (void)
896	{	1032	{
897	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1035	#endif
900		1036
901	#ifndef WIN32	1037	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
904	#endif	1040	#endif
905		1041
906	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
914		1050
915	void	1051	void
916	ev_default_fork (void)	1052	ev_default_fork (void)
917	{	1053	{
918	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1056	#endif
921		1057
922	if (method)	1058	if (backend)
923	postfork = 1;	1059	postfork = 1;
924	}	1060	}
925		1061
926	/*****************************************************************************/	1062	/*****************************************************************************/
927		1063
928	static int	1064	int inline_size
929	any_pending (EV_P)	1065	any_pending (EV_P)
930	{	1066	{
931	int pri;	1067	int pri;
932		1068
933	for (pri = NUMPRI; pri--; )	1069	for (pri = NUMPRI; pri--; )
…		…
935	return 1;	1071	return 1;
936		1072
937	return 0;	1073	return 0;
938	}	1074	}
939		1075
940	static void	1076	void inline_speed
941	call_pending (EV_P)	1077	call_pending (EV_P)
942	{	1078	{
943	int pri;	1079	int pri;
944		1080
945	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
947	{	1083	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1085
950	if (p->w)	1086	if (expect_true (p->w))
951	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
952	p->w->pending = 0;	1090	p->w->pending = 0;
953	p->w->cb (EV_A_ p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
954	}	1092	}
955	}	1093	}
956	}	1094	}
957		1095
958	static void	1096	void inline_size
959	timers_reify (EV_P)	1097	timers_reify (EV_P)
960	{	1098	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1100	{
963	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
964		1102
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
966		1104
967	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
968	if (w->repeat)	1106	if (w->repeat)
969	{	1107	{
970	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
971	((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
972	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
973	}	1115	}
974	else	1116	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1118
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1120	}
979	}	1121	}
980		1122
981	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
982	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
983	{	1126	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1128	{
986	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
987		1130
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
989		1132
990	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1134	if (w->reschedule_cb)
992	{	1135	{
993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1136	((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));	1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996	downheap ((WT *)periodics, periodiccnt, 0);	1138	downheap ((WT *)periodics, periodiccnt, 0);
997	}	1139	}
998	else if (w->interval)	1140	else if (w->interval)
999	{	1141	{
1000	((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;
1001	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));
1002	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1003	}	1145	}
1004	else	1146	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1148
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1150	}
1009	}	1151	}
1010		1152
1011	static void	1153	static void noinline
1012	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
1013	{	1155	{
1014	int i;	1156	int i;
1015		1157
1016	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
1018	{	1160	{
1019	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
1020		1162
1021	if (w->reschedule_cb)	1163	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1165	else if (w->interval)
1024	((WT)w)->at += 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;
1025	}	1167	}
1026		1168
1027	/* now rebuild the heap */	1169	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1170	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1171	downheap ((WT *)periodics, periodiccnt, i);
1030	}	1172	}
		1173	#endif
1031		1174
1032	inline int	1175	int inline_size
1033	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
1034	{	1177	{
1035	mn_now = get_clock ();	1178	mn_now = get_clock ();
1036		1179
1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038	{	1181	{
1039	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
1040	return 0;	1183	return 0;
1041	}	1184	}
1042	else	1185	else
1043	{	1186	{
1044	now_floor = mn_now;	1187	now_floor = mn_now;
1045	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
1046	return 1;	1189	return 1;
1047	}	1190	}
1048	}	1191	}
1049		1192
1050	static void	1193	void inline_size
1051	time_update (EV_P)	1194	time_update (EV_P)
1052	{	1195	{
1053	int i;	1196	int i;
1054		1197
1055	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1057	{	1200	{
1058	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1059	{	1202	{
1060	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1061		1204
1062	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; )
1063	{	1214	{
1064	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1065		1216
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1218	return; /* all is well */
1068		1219
1069	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1221	mn_now = get_clock ();
1071	now_floor = mn_now;	1222	now_floor = mn_now;
1072	}	1223	}
1073		1224
		1225	# if EV_PERIODIC_ENABLE
1074	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1077	}	1230	}
1078	}	1231	}
1079	else	1232	else
1080	#endif	1233	#endif
1081	{	1234	{
1082	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1083		1236
1084	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))
1085	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
1087		1242
1088	/* 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 */
1089	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
1090	((WT)timers [i])->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
1091	}	1246	}
1092		1247
1093	mn_now = rt_now;	1248	mn_now = ev_rt_now;
1094	}	1249	}
1095	}	1250	}
1096		1251
1097	void	1252	void
1098	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
1109	static int loop_done;	1264	static int loop_done;
1110		1265
1111	void	1266	void
1112	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1113	{	1268	{
1114	double block;
1115	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1116		1272
1117	do	1273	while (activecnt)
1118	{	1274	{
1119	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1120	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1121	{	1277	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1129		1285
1130	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1287	fd_reify (EV_A);
1132		1288
1133	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1134		1292
1135	/* we only need this for !monotonic clock or timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK || idlecnt)
1136	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 */
1137	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1140	else	1301	else
1141	#endif	1302	#endif
1142	{	1303	{
1143	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1144	mn_now = rt_now;	1305	mn_now = ev_rt_now;
1145	}	1306	}
1146		1307
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1152		1309
1153	if (timercnt)	1310	if (timercnt)
1154	{	1311	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1313	if (block > to) block = to;
1157	}	1314	}
1158		1315
		1316	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1317	if (periodiccnt)
1160	{	1318	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1320	if (block > to) block = to;
1163	}	1321	}
		1322	#endif
1164		1323
1165	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1166	}	1325	}
1167		1326
1168	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1169		1329
1170	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1331	time_update (EV_A);
1172		1332
1173	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1176		1338
1177	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1340	if (idlecnt && !any_pending (EV_A))
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1180		1342
1181	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1344	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1346
1185	call_pending (EV_A);	1347	call_pending (EV_A);
1186	}
1187	while (activecnt && !loop_done);
1188		1348
1189	if (loop_done != 2)	1349	if (expect_false (loop_done))
1190	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1191	}	1355	}
1192		1356
1193	void	1357	void
1194	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1195	{	1359	{
1196	loop_done = how;	1360	loop_done = how;
1197	}	1361	}
1198		1362
1199	/*****************************************************************************/	1363	/*****************************************************************************/
1200		1364
1201	inline void	1365	void inline_size
1202	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1203	{	1367	{
1204	elem->next = *head;	1368	elem->next = *head;
1205	*head = elem;	1369	*head = elem;
1206	}	1370	}
1207		1371
1208	inline void	1372	void inline_size
1209	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1210	{	1374	{
1211	while (*head)	1375	while (*head)
1212	{	1376	{
1213	if (*head == elem)	1377	if (*head == elem)
…		…
1218		1382
1219	head = &(*head)->next;	1383	head = &(*head)->next;
1220	}	1384	}
1221	}	1385	}
1222		1386
1223	inline void	1387	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1225	{	1389	{
1226	if (w->pending)	1390	if (w->pending)
1227	{	1391	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1393	w->pending = 0;
1230	}	1394	}
1231	}	1395	}
1232		1396
1233	inline void	1397	void inline_speed
1234	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1235	{	1399	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238		1402
1239	w->active = active;	1403	w->active = active;
1240	ev_ref (EV_A);	1404	ev_ref (EV_A);
1241	}	1405	}
1242		1406
1243	inline void	1407	void inline_size
1244	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1245	{	1409	{
1246	ev_unref (EV_A);	1410	ev_unref (EV_A);
1247	w->active = 0;	1411	w->active = 0;
1248	}	1412	}
1249		1413
1250	/*****************************************************************************/	1414	/*****************************************************************************/
1251		1415
1252	void	1416	void
1253	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1254	{	1418	{
1255	int fd = w->fd;	1419	int fd = w->fd;
1256		1420
1257	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1258	return;	1422	return;
1259		1423
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1425
1262	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
…		…
1265		1429
1266	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1267	}	1431	}
1268		1432
1269	void	1433	void
1270	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1271	{	1435	{
1272	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1274	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1275		1441
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1278		1444
1279	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1280	}	1446	}
1281		1447
1282	void	1448	void
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1450	{
1285	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1286	return;	1452	return;
1287		1453
1288	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1289		1455
1290	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.));
1291		1457
1292	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1295	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1296		1462
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1298	}	1464	}
1299		1465
1300	void	1466	void
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1302	{	1468	{
1303	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1305	return;	1471	return;
1306		1472
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1308		1474
1309	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1310	{	1476	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1313	}	1479	}
1314		1480
1315	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1316		1482
1317	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1318	}	1484	}
1319		1485
1320	void	1486	void
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1488	{
1323	if (ev_is_active (w))	1489	if (ev_is_active (w))
1324	{	1490	{
1325	if (w->repeat)	1491	if (w->repeat)
1326	{	1492	{
1327	((WT)w)->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1495	}
1330	else	1496	else
1331	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1332	}	1498	}
1333	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1335	}	1504	}
1336		1505
		1506	#if EV_PERIODIC_ENABLE
1337	void	1507	void
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1509	{
1340	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1341	return;	1511	return;
1342		1512
1343	if (w->reschedule_cb)	1513	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1515	else if (w->interval)
1346	{	1516	{
1347	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.));
1348	/* 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 */
1349	((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;
1350	}	1520	}
1351		1521
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1356		1526
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1358	}	1528	}
1359		1529
1360	void	1530	void
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1362	{	1532	{
1363	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1365	return;	1535	return;
1366		1536
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1368		1538
1369	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1370	{	1540	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1373	}	1543	}
1374		1544
1375	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1376	}	1546	}
1377		1547
1378	void	1548	void
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1549	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1550	{
		1551	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1552	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1553	ev_periodic_start (EV_A_ w);
1383	}	1554	}
		1555	#endif
1384		1556
1385	void	1557	void
1386	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1387	{	1559	{
1388	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1389	return;	1561	return;
1390		1562
1391	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1393	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1394	}	1566	}
1395		1567
1396	void	1568	void
1397	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1398	{	1570	{
1399	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1400	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1401	return;	1573	return;
1402		1574
		1575	{
		1576	int active = ((W)w)->active;
1403	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1404	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1405	}	1582	}
1406		1583
1407	void	1584	void
1408	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1409	{	1586	{
1410	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1411	return;	1588	return;
1412		1589
1413	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1415	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1416	}	1593	}
1417		1594
1418	void	1595	void
1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1420	{	1597	{
1421	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1423	return;	1600	return;
1424		1601
		1602	{
		1603	int active = ((W)w)->active;
1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1426	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1427	}	1609	}
1428		1610
1429	void	1611	void
1430	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1431	{	1613	{
1432	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1433	return;	1615	return;
1434		1616
1435	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1437	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1438	}	1620	}
1439		1621
1440	void	1622	void
1441	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1442	{	1624	{
1443	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1445	return;	1627	return;
1446		1628
		1629	{
		1630	int active = ((W)w)->active;
1447	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1448	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1449	}	1636	}
1450		1637
1451	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1639	# define SA_RESTART 0
1453	#endif	1640	#endif
1454		1641
1455	void	1642	void
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1644	{
1458	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1459	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));
1460	#endif	1647	#endif
1461	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1462	return;	1649	return;
1463		1650
1464	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));
1465		1652
1466	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1469		1656
1470	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1471	{	1658	{
1472	#if WIN32	1659	#if _WIN32
1473	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1474	#else	1661	#else
1475	struct sigaction sa;	1662	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1480	#endif	1667	#endif
1481	}	1668	}
1482	}	1669	}
1483		1670
1484	void	1671	void
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1673	{
1487	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1489	return;	1676	return;
1490		1677
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1493		1680
1494	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1496	}	1683	}
1497		1684
1498	void	1685	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1500	{	1687	{
1501	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1502	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));
1503	#endif	1690	#endif
1504	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1505	return;	1692	return;
1506		1693
1507	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1509	}	1696	}
1510		1697
1511	void	1698	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1513	{	1700	{
1514	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1516	return;	1703	return;
1517		1704
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1520	}	1707	}
1521		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
1522	/*****************************************************************************/	1819	/*****************************************************************************/
1523		1820
1524	struct ev_once	1821	struct ev_once
1525	{	1822	{
1526	struct ev_io io;	1823	ev_io io;
1527	struct ev_timer to;	1824	ev_timer to;
1528	void (*cb)(int revents, void *arg);	1825	void (*cb)(int revents, void *arg);
1529	void *arg;	1826	void *arg;
1530	};	1827	};
1531		1828
1532	static void	1829	static void
…		…
1541		1838
1542	cb (revents, arg);	1839	cb (revents, arg);
1543	}	1840	}
1544		1841
1545	static void	1842	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	1844	{
1548	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);
1549	}	1846	}
1550		1847
1551	static void	1848	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	1850	{
1554	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);
1555	}	1852	}
1556		1853
1557	void	1854	void
1558	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)
1559	{	1856	{
1560	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1857	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561		1858
1562	if (!once)	1859	if (expect_false (!once))
		1860	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1861	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	1862	return;
1565	{	1863	}
		1864
1566	once->cb = cb;	1865	once->cb = cb;
1567	once->arg = arg;	1866	once->arg = arg;
1568		1867
1569	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	1869	if (fd >= 0)
1571	{	1870	{
1572	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1574	}	1873	}
1575		1874
1576	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	1876	if (timeout >= 0.)
1578	{	1877	{
1579	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	1880	}
1583	}	1881	}
1584		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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