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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.147 by root, Tue Nov 27 10:59:11 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)
		202	# define inline_speed static
142	# define inline static	203	# define inline_size 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
		230	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	232	{
165	syserr_cb = cb;	233	syserr_cb = cb;
166	}	234	}
167		235
168	static void	236	static void noinline
169	syserr (const char *msg)	237	syserr (const char *msg)
170	{	238	{
171	if (!msg)	239	if (!msg)
172	msg = "(libev) system error";	240	msg = "(libev) system error";
173		241
…		…
180	}	248	}
181	}	249	}
182		250
183	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
184		252
		253	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	255	{
187	alloc = cb;	256	alloc = cb;
188	}	257	}
189		258
190	static void *	259	static void *
…		…
209	typedef struct	278	typedef struct
210	{	279	{
211	WL head;	280	WL head;
212	unsigned char events;	281	unsigned char events;
213	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
214	} ANFD;	286	} ANFD;
215		287
216	typedef struct	288	typedef struct
217	{	289	{
218	W w;	290	W w;
…		…
221		293
222	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
223		295
224	struct ev_loop	296	struct ev_loop
225	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	301	#include "ev_vars.h"
228	#undef VAR	302	#undef VAR
229	};	303	};
230	#include "ev_wrap.h"	304	#include "ev_wrap.h"
231		305
232	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
234		308
235	#else	309	#else
236		310
		311	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	313	#include "ev_vars.h"
239	#undef VAR	314	#undef VAR
240		315
241	static int default_loop;	316	static int ev_default_loop_ptr;
242		317
243	#endif	318	#endif
244		319
245	/*****************************************************************************/	320	/*****************************************************************************/
246		321
247	inline ev_tstamp	322	ev_tstamp
248	ev_time (void)	323	ev_time (void)
249	{	324	{
250	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
251	struct timespec ts;	326	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	333	#endif
259	}	334	}
260		335
261	inline ev_tstamp	336	ev_tstamp inline_size
262	get_clock (void)	337	get_clock (void)
263	{	338	{
264	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
266	{	341	{
…		…
271	#endif	346	#endif
272		347
273	return ev_time ();	348	return ev_time ();
274	}	349	}
275		350
		351	#if EV_MULTIPLICITY
276	ev_tstamp	352	ev_tstamp
277	ev_now (EV_P)	353	ev_now (EV_P)
278	{	354	{
279	return rt_now;	355	return ev_rt_now;
280	}	356	}
		357	#endif
281		358
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		360
284	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
286	{ \	363	{ \
287	int newcnt = cur; \	364	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	382	}
306		383
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) \	384	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		386
315	/*****************************************************************************/	387	/*****************************************************************************/
316		388
317	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
318	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
319	{	419	{
320	while (count--)	420	while (count--)
321	{	421	{
322	base->head = 0;	422	base->head = 0;
…		…
325		425
326	++base;	426	++base;
327	}	427	}
328	}	428	}
329		429
330	void	430	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)	431	fd_event (EV_P_ int fd, int revents)
358	{	432	{
359	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	434	ev_io *w;
361		435
362	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363	{	437	{
364	int ev = w->events & revents;	438	int ev = w->events & revents;
365		439
366	if (ev)	440	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	447	{
374	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
375	}	449	}
376		450
377	/*****************************************************************************/	451	void inline_size
378
379	static void
380	fd_reify (EV_P)	452	fd_reify (EV_P)
381	{	453	{
382	int i;	454	int i;
383		455
384	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
385	{	457	{
386	int fd = fdchanges [i];	458	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	460	ev_io *w;
389		461
390	int events = 0;	462	int events = 0;
391		463
392	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393	events |= w->events;	465	events |= w->events;
394		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
395	anfd->reify = 0;	476	anfd->reify = 0;
396		477
397	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	479	anfd->events = events;
399	}	480	}
400		481
401	fdchangecnt = 0;	482	fdchangecnt = 0;
402	}	483	}
403		484
404	static void	485	void inline_size
405	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
406	{	487	{
407	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
408	return;	489	return;
409		490
410	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
411		492
412	++fdchangecnt;	493	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
415	}	496	}
416		497
417	static void	498	void inline_speed
418	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
419	{	500	{
420	struct ev_io *w;	501	ev_io *w;
421		502
422	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
423	{	504	{
424	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426	}	507	}
427	}	508	}
428		509
429	static int	510	int inline_size
430	fd_valid (int fd)	511	fd_valid (int fd)
431	{	512	{
432	#ifdef WIN32	513	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
434	#else	515	#else
435	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
436	#endif	517	#endif
437	}	518	}
438		519
439	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
440	static void	521	static void noinline
441	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
442	{	523	{
443	int fd;	524	int fd;
444		525
445	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
449	}	530	}
450		531
451	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
452	static void	533	static void noinline
453	fd_enomem (EV_P)	534	fd_enomem (EV_P)
454	{	535	{
455	int fd;	536	int fd;
456		537
457	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
461	return;	542	return;
462	}	543	}
463	}	544	}
464		545
465	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
466	static void	547	static void noinline
467	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
468	{	549	{
469	int fd;	550	int fd;
470		551
471	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
477	}	558	}
478	}	559	}
479		560
480	/*****************************************************************************/	561	/*****************************************************************************/
481		562
482	static void	563	void inline_speed
483	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
484	{	565	{
485	WT w = heap [k];	566	WT w = heap [k];
486		567
487	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	575	heap [k] = w;
495	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
496		577
497	}	578	}
498		579
499	static void	580	void inline_speed
500	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
501	{	582	{
502	WT w = heap [k];	583	WT w = heap [k];
503		584
504	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
518		599
519	heap [k] = w;	600	heap [k] = w;
520	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
521	}	602	}
522		603
523	inline void	604	void inline_size
524	adjustheap (WT *heap, int N, int k, ev_tstamp at)	605	adjustheap (WT *heap, int N, int k)
525	{	606	{
526	ev_tstamp old_at = heap [k]->at;	607	upheap (heap, k);
527	heap [k]->at = at;
528
529	if (old_at < at)
530	downheap (heap, N, k);	608	downheap (heap, N, k);
531	else
532	upheap (heap, k);
533	}	609	}
534		610
535	/*****************************************************************************/	611	/*****************************************************************************/
536		612
537	typedef struct	613	typedef struct
…		…
543	static ANSIG *signals;	619	static ANSIG *signals;
544	static int signalmax;	620	static int signalmax;
545		621
546	static int sigpipe [2];	622	static int sigpipe [2];
547	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
548	static struct ev_io sigev;	624	static ev_io sigev;
549		625
550	static void	626	void inline_size
551	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
552	{	628	{
553	while (count--)	629	while (count--)
554	{	630	{
555	base->head = 0;	631	base->head = 0;
…		…
560	}	636	}
561		637
562	static void	638	static void
563	sighandler (int signum)	639	sighandler (int signum)
564	{	640	{
565	#if WIN32	641	#if _WIN32
566	signal (signum, sighandler);	642	signal (signum, sighandler);
567	#endif	643	#endif
568		644
569	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
570		646
571	if (!gotsig)	647	if (!gotsig)
572	{	648	{
573	int old_errno = errno;	649	int old_errno = errno;
574	gotsig = 1;	650	gotsig = 1;
575	#ifdef WIN32
576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577	#else
578	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
579	#endif
580	errno = old_errno;	652	errno = old_errno;
581	}	653	}
582	}	654	}
583		655
584	void	656	void noinline
585	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
586	{	658	{
587	WL w;	659	WL w;
588		660
589	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591	#endif	663	#endif
592		664
593	--signum;	665	--signum;
594		666
595	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
600	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602	}	674	}
603		675
604	static void	676	static void
605	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
606	{	678	{
607	int signum;	679	int signum;
608		680
609	#ifdef WIN32
610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611	#else
612	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
613	#endif
614	gotsig = 0;	682	gotsig = 0;
615		683
616	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
617	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
618	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
619	}	687	}
620		688
621	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
622	siginit (EV_P)	702	siginit (EV_P)
623	{	703	{
624	#ifndef WIN32	704	fd_intern (sigpipe [0]);
625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628	/* rather than sort out wether we really need nb, set it */
629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631	#endif
632		706
633	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
634	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
635	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
636	}	710	}
637		711
638	/*****************************************************************************/	712	/*****************************************************************************/
639		713
640	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
641		715
642	#ifndef WIN32	716	#ifndef _WIN32
643		717
644	static struct ev_signal childev;	718	static ev_signal childev;
645		719
646	#ifndef WCONTINUED	720	void inline_speed
647	# define WCONTINUED 0
648	#endif
649
650	static void
651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
652	{	722	{
653	struct ev_child *w;	723	ev_child *w;
654		724
655	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
656	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
657	{	727	{
658	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659	w->rpid = pid;	729	w->rpid = pid;
660	w->rstatus = status;	730	w->rstatus = status;
661	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
662	}	732	}
663	}	733	}
664		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
665	static void	739	static void
666	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
667	{	741	{
668	int pid, status;	742	int pid, status;
669		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
672	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* we need to do it this way so that the callback gets called before we continue */
673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674		754
675	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
677	}
678	}	757	}
679		758
680	#endif	759	#endif
681		760
682	/*****************************************************************************/	761	/*****************************************************************************/
683		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
684	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
685	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
686	#endif	768	#endif
687	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
688	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
705	{	787	{
706	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
707	}	789	}
708		790
709	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
710	static int	792	int inline_size
711	enable_secure (void)	793	enable_secure (void)
712	{	794	{
713	#ifdef WIN32	795	#ifdef _WIN32
714	return 0;	796	return 0;
715	#else	797	#else
716	return getuid () != geteuid ()	798	return getuid () != geteuid ()
717	|| getgid () != getegid ();	799	|| getgid () != getegid ();
718	#endif	800	#endif
719	}	801	}
720		802
721	int	803	unsigned int
722	ev_method (EV_P)	804	ev_supported_backends (void)
723	{	805	{
724	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	| EVBACKEND_KQUEUE
		840	| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
725	}	847	}
726		848
727	static void	849	static void
728	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
729	{	851	{
730	if (!method)	852	if (!backend)
731	{	853	{
732	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
733	{	855	{
734	struct timespec ts;	856	struct timespec ts;
735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736	have_monotonic = 1;	858	have_monotonic = 1;
737	}	859	}
738	#endif	860	#endif
739		861
740	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
741	mn_now = get_clock ();	863	mn_now = get_clock ();
742	now_floor = mn_now;	864	now_floor = mn_now;
743	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
744		866
745	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
746	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
747	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
748	else
749	methods = EVMETHOD_ANY;
750		871
751	method = 0;	872	if (!(flags & 0x0000ffffUL))
752	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
754	#endif	878	#endif
755	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757	#endif	881	#endif
758	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760	#endif	884	#endif
761	#if EV_USE_POLL	885	#if EV_USE_POLL
762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763	#endif	887	#endif
764	#if EV_USE_SELECT	888	#if EV_USE_SELECT
765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766	#endif	890	#endif
767		891
768	ev_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
769	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
770	}	894	}
771	}	895	}
772		896
773	void	897	static void
774	loop_destroy (EV_P)	898	loop_destroy (EV_P)
775	{	899	{
776	int i;	900	int i;
777		901
778	#if EV_USE_WIN32	902	#if EV_USE_PORT
779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780	#endif	904	#endif
781	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783	#endif	907	#endif
784	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786	#endif	910	#endif
787	#if EV_USE_POLL	911	#if EV_USE_POLL
788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789	#endif	913	#endif
790	#if EV_USE_SELECT	914	#if EV_USE_SELECT
791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792	#endif	916	#endif
793		917
794	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
795	array_free (pending, [i]);	919	array_free (pending, [i]);
796		920
797	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
798	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
799	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
800	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
801	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
802	array_free_microshit (prepare);	926	#endif
803	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
804		930
805	method = 0;	931	backend = 0;
806	}	932	}
807		933
808	static void	934	static void
809	loop_fork (EV_P)	935	loop_fork (EV_P)
810	{	936	{
		937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
811	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813	#endif
814	#if EV_USE_KQUEUE
815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
816	#endif	945	#endif
817		946
818	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
819	{	948	{
820	/* default loop */	949	/* default loop */
…		…
833	postfork = 0;	962	postfork = 0;
834	}	963	}
835		964
836	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
837	struct ev_loop *	966	struct ev_loop *
838	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
839	{	968	{
840	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841		970
842	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
843		972
844	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
845		974
846	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
847	return loop;	976	return loop;
848		977
849	return 0;	978	return 0;
850	}	979	}
851		980
…		…
864		993
865	#endif	994	#endif
866		995
867	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
868	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
869	#else	999	#else
870	int	1000	int
		1001	ev_default_loop (unsigned int flags)
871	#endif	1002	#endif
872	ev_default_loop (int methods)
873	{	1003	{
874	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
875	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
876	return 0;	1006	return 0;
877		1007
878	if (!default_loop)	1008	if (!ev_default_loop_ptr)
879	{	1009	{
880	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
881	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882	#else	1012	#else
883	default_loop = 1;	1013	ev_default_loop_ptr = 1;
884	#endif	1014	#endif
885		1015
886	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
887		1017
888	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
889	{	1019	{
890	siginit (EV_A);	1020	siginit (EV_A);
891		1021
892	#ifndef WIN32	1022	#ifndef _WIN32
893	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
894	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
895	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
897	#endif	1027	#endif
898	}	1028	}
899	else	1029	else
900	default_loop = 0;	1030	ev_default_loop_ptr = 0;
901	}	1031	}
902		1032
903	return default_loop;	1033	return ev_default_loop_ptr;
904	}	1034	}
905		1035
906	void	1036	void
907	ev_default_destroy (void)	1037	ev_default_destroy (void)
908	{	1038	{
909	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
910	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
911	#endif	1041	#endif
912		1042
913	#ifndef WIN32	1043	#ifndef _WIN32
914	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
915	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
916	#endif	1046	#endif
917		1047
918	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
926		1056
927	void	1057	void
928	ev_default_fork (void)	1058	ev_default_fork (void)
929	{	1059	{
930	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
931	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
932	#endif	1062	#endif
933		1063
934	if (method)	1064	if (backend)
935	postfork = 1;	1065	postfork = 1;
936	}	1066	}
937		1067
938	/*****************************************************************************/	1068	/*****************************************************************************/
939		1069
940	static int	1070	int inline_size
941	any_pending (EV_P)	1071	any_pending (EV_P)
942	{	1072	{
943	int pri;	1073	int pri;
944		1074
945	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
947	return 1;	1077	return 1;
948		1078
949	return 0;	1079	return 0;
950	}	1080	}
951		1081
952	static void	1082	void inline_speed
953	call_pending (EV_P)	1083	call_pending (EV_P)
954	{	1084	{
955	int pri;	1085	int pri;
956		1086
957	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
958	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
959	{	1089	{
960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961		1091
962	if (p->w)	1092	if (expect_true (p->w))
963	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
964	p->w->pending = 0;	1096	p->w->pending = 0;
965	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
966	}	1098	}
967	}	1099	}
968	}	1100	}
969		1101
970	static void	1102	void inline_size
971	timers_reify (EV_P)	1103	timers_reify (EV_P)
972	{	1104	{
973	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
974	{	1106	{
975	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
976		1108
977	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
978		1110
979	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
980	if (w->repeat)	1112	if (w->repeat)
981	{	1113	{
982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1115
983	((WT)w)->at = mn_now + w->repeat;	1116	((WT)w)->at += w->repeat;
		1117	if (((WT)w)->at < mn_now)
		1118	((WT)w)->at = mn_now;
		1119
984	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
985	}	1121	}
986	else	1122	else
987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988		1124
989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990	}	1126	}
991	}	1127	}
992		1128
993	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
994	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
995	{	1132	{
996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997	{	1134	{
998	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
999		1136
1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1001		1138
1002	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1003	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1004	{	1141	{
1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1009	}	1145	}
1010	else if (w->interval)	1146	else if (w->interval)
1011	{	1147	{
1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
1015	}	1151	}
1016	else	1152	else
1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1154
1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020	}	1156	}
1021	}	1157	}
1022		1158
1023	static void	1159	static void noinline
1024	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1025	{	1161	{
1026	int i;	1162	int i;
1027		1163
1028	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1029	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1030	{	1166	{
1031	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1032		1168
1033	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1034	((WT)w)->at = w->reschedule_cb (w, rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035	else if (w->interval)	1171	else if (w->interval)
1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037	}	1173	}
1038		1174
1039	/* now rebuild the heap */	1175	/* now rebuild the heap */
1040	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1041	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1042	}	1178	}
		1179	#endif
1043		1180
1044	inline int	1181	int inline_size
1045	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1046	{	1183	{
1047	mn_now = get_clock ();	1184	mn_now = get_clock ();
1048		1185
1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050	{	1187	{
1051	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1052	return 0;	1189	return 0;
1053	}	1190	}
1054	else	1191	else
1055	{	1192	{
1056	now_floor = mn_now;	1193	now_floor = mn_now;
1057	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1058	return 1;	1195	return 1;
1059	}	1196	}
1060	}	1197	}
1061		1198
1062	static void	1199	void inline_size
1063	time_update (EV_P)	1200	time_update (EV_P)
1064	{	1201	{
1065	int i;	1202	int i;
1066		1203
1067	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1069	{	1206	{
1070	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1071	{	1208	{
1072	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1073		1210
1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
1075	{	1220	{
1076	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1077		1222
1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079	return; /* all is well */	1224	return; /* all is well */
1080		1225
1081	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1082	mn_now = get_clock ();	1227	mn_now = get_clock ();
1083	now_floor = mn_now;	1228	now_floor = mn_now;
1084	}	1229	}
1085		1230
		1231	# if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1087	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089	}	1236	}
1090	}	1237	}
1091	else	1238	else
1092	#endif	1239	#endif
1093	{	1240	{
1094	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1095		1242
1096	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1098	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1099		1248
1100	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
1101	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1102	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1103	}	1252	}
1104		1253
1105	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1106	}	1255	}
1107	}	1256	}
1108		1257
1109	void	1258	void
1110	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1121	static int loop_done;	1270	static int loop_done;
1122		1271
1123	void	1272	void
1124	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1125	{	1274	{
1126	double block;
1127	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1128		1278
1129	do	1279	while (activecnt)
1130	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	if (expect_false (postfork))
		1283	if (forkcnt)
		1284	{
		1285	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1286	call_pending (EV_A);
		1287	}
		1288
1131	/* queue check watchers (and execute them) */	1289	/* queue check watchers (and execute them) */
1132	if (expect_false (preparecnt))	1290	if (expect_false (preparecnt))
1133	{	1291	{
1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135	call_pending (EV_A);	1293	call_pending (EV_A);
…		…
1141		1299
1142	/* update fd-related kernel structures */	1300	/* update fd-related kernel structures */
1143	fd_reify (EV_A);	1301	fd_reify (EV_A);
1144		1302
1145	/* calculate blocking time */	1303	/* calculate blocking time */
		1304	{
		1305	double block;
1146		1306
1147	/* we only need this for !monotonic clock or timers, but as we basically	1307	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	always have timers, we just calculate it always */	1308	block = 0.; /* do not block at all */
		1309	else
		1310	{
		1311	/* update time to cancel out callback processing overhead */
1149	#if EV_USE_MONOTONIC	1312	#if EV_USE_MONOTONIC
1150	if (expect_true (have_monotonic))	1313	if (expect_true (have_monotonic))
1151	time_update_monotonic (EV_A);	1314	time_update_monotonic (EV_A);
1152	else	1315	else
1153	#endif	1316	#endif
1154	{	1317	{
1155	rt_now = ev_time ();	1318	ev_rt_now = ev_time ();
1156	mn_now = rt_now;	1319	mn_now = ev_rt_now;
1157	}	1320	}
1158		1321
1159	if (flags & EVLOOP_NONBLOCK || idlecnt)
1160	block = 0.;
1161	else
1162	{
1163	block = MAX_BLOCKTIME;	1322	block = MAX_BLOCKTIME;
1164		1323
1165	if (timercnt)	1324	if (timercnt)
1166	{	1325	{
1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1326	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168	if (block > to) block = to;	1327	if (block > to) block = to;
1169	}	1328	}
1170		1329
		1330	#if EV_PERIODIC_ENABLE
1171	if (periodiccnt)	1331	if (periodiccnt)
1172	{	1332	{
1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1333	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174	if (block > to) block = to;	1334	if (block > to) block = to;
1175	}	1335	}
		1336	#endif
1176		1337
1177	if (block < 0.) block = 0.;	1338	if (expect_false (block < 0.)) block = 0.;
1178	}	1339	}
1179		1340
1180	method_poll (EV_A_ block);	1341	backend_poll (EV_A_ block);
		1342	}
1181		1343
1182	/* update rt_now, do magic */	1344	/* update ev_rt_now, do magic */
1183	time_update (EV_A);	1345	time_update (EV_A);
1184		1346
1185	/* queue pending timers and reschedule them */	1347	/* queue pending timers and reschedule them */
1186	timers_reify (EV_A); /* relative timers called last */	1348	timers_reify (EV_A); /* relative timers called last */
		1349	#if EV_PERIODIC_ENABLE
1187	periodics_reify (EV_A); /* absolute timers called first */	1350	periodics_reify (EV_A); /* absolute timers called first */
		1351	#endif
1188		1352
1189	/* queue idle watchers unless io or timers are pending */	1353	/* queue idle watchers unless other events are pending */
1190	if (idlecnt && !any_pending (EV_A))	1354	if (idlecnt && !any_pending (EV_A))
1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1192		1356
1193	/* queue check watchers, to be executed first */	1357	/* queue check watchers, to be executed first */
1194	if (checkcnt)	1358	if (expect_false (checkcnt))
1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196		1360
1197	call_pending (EV_A);	1361	call_pending (EV_A);
1198	}
1199	while (activecnt && !loop_done);
1200		1362
1201	if (loop_done != 2)	1363	if (expect_false (loop_done))
1202	loop_done = 0;	1364	break;
		1365	}
		1366
		1367	if (loop_done == EVUNLOOP_ONE)
		1368	loop_done = EVUNLOOP_CANCEL;
1203	}	1369	}
1204		1370
1205	void	1371	void
1206	ev_unloop (EV_P_ int how)	1372	ev_unloop (EV_P_ int how)
1207	{	1373	{
1208	loop_done = how;	1374	loop_done = how;
1209	}	1375	}
1210		1376
1211	/*****************************************************************************/	1377	/*****************************************************************************/
1212		1378
1213	inline void	1379	void inline_size
1214	wlist_add (WL *head, WL elem)	1380	wlist_add (WL *head, WL elem)
1215	{	1381	{
1216	elem->next = *head;	1382	elem->next = *head;
1217	*head = elem;	1383	*head = elem;
1218	}	1384	}
1219		1385
1220	inline void	1386	void inline_size
1221	wlist_del (WL *head, WL elem)	1387	wlist_del (WL *head, WL elem)
1222	{	1388	{
1223	while (*head)	1389	while (*head)
1224	{	1390	{
1225	if (*head == elem)	1391	if (*head == elem)
…		…
1230		1396
1231	head = &(*head)->next;	1397	head = &(*head)->next;
1232	}	1398	}
1233	}	1399	}
1234		1400
1235	inline void	1401	void inline_speed
1236	ev_clear_pending (EV_P_ W w)	1402	ev_clear_pending (EV_P_ W w)
1237	{	1403	{
1238	if (w->pending)	1404	if (w->pending)
1239	{	1405	{
1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241	w->pending = 0;	1407	w->pending = 0;
1242	}	1408	}
1243	}	1409	}
1244		1410
1245	inline void	1411	void inline_speed
1246	ev_start (EV_P_ W w, int active)	1412	ev_start (EV_P_ W w, int active)
1247	{	1413	{
1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250		1416
1251	w->active = active;	1417	w->active = active;
1252	ev_ref (EV_A);	1418	ev_ref (EV_A);
1253	}	1419	}
1254		1420
1255	inline void	1421	void inline_size
1256	ev_stop (EV_P_ W w)	1422	ev_stop (EV_P_ W w)
1257	{	1423	{
1258	ev_unref (EV_A);	1424	ev_unref (EV_A);
1259	w->active = 0;	1425	w->active = 0;
1260	}	1426	}
1261		1427
1262	/*****************************************************************************/	1428	/*****************************************************************************/
1263		1429
1264	void	1430	void
1265	ev_io_start (EV_P_ struct ev_io *w)	1431	ev_io_start (EV_P_ ev_io *w)
1266	{	1432	{
1267	int fd = w->fd;	1433	int fd = w->fd;
1268		1434
1269	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1270	return;	1436	return;
1271		1437
1272	assert (("ev_io_start called with negative fd", fd >= 0));	1438	assert (("ev_io_start called with negative fd", fd >= 0));
1273		1439
1274	ev_start (EV_A_ (W)w, 1);	1440	ev_start (EV_A_ (W)w, 1);
…		…
1277		1443
1278	fd_change (EV_A_ fd);	1444	fd_change (EV_A_ fd);
1279	}	1445	}
1280		1446
1281	void	1447	void
1282	ev_io_stop (EV_P_ struct ev_io *w)	1448	ev_io_stop (EV_P_ ev_io *w)
1283	{	1449	{
1284	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1285	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1286	return;	1452	return;
		1453
		1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287		1455
1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1456	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289	ev_stop (EV_A_ (W)w);	1457	ev_stop (EV_A_ (W)w);
1290		1458
1291	fd_change (EV_A_ w->fd);	1459	fd_change (EV_A_ w->fd);
1292	}	1460	}
1293		1461
1294	void	1462	void
1295	ev_timer_start (EV_P_ struct ev_timer *w)	1463	ev_timer_start (EV_P_ ev_timer *w)
1296	{	1464	{
1297	if (ev_is_active (w))	1465	if (expect_false (ev_is_active (w)))
1298	return;	1466	return;
1299		1467
1300	((WT)w)->at += mn_now;	1468	((WT)w)->at += mn_now;
1301		1469
1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1470	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303		1471
1304	ev_start (EV_A_ (W)w, ++timercnt);	1472	ev_start (EV_A_ (W)w, ++timercnt);
1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1306	timers [timercnt - 1] = w;	1474	timers [timercnt - 1] = w;
1307	upheap ((WT *)timers, timercnt - 1);	1475	upheap ((WT *)timers, timercnt - 1);
1308		1476
1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310	}	1478	}
1311		1479
1312	void	1480	void
1313	ev_timer_stop (EV_P_ struct ev_timer *w)	1481	ev_timer_stop (EV_P_ ev_timer *w)
1314	{	1482	{
1315	ev_clear_pending (EV_A_ (W)w);	1483	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1484	if (expect_false (!ev_is_active (w)))
1317	return;	1485	return;
1318		1486
1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320		1488
1321	if (((W)w)->active < timercnt--)	1489	if (expect_true (((W)w)->active < timercnt--))
1322	{	1490	{
1323	timers [((W)w)->active - 1] = timers [timercnt];	1491	timers [((W)w)->active - 1] = timers [timercnt];
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325	}	1493	}
1326		1494
1327	((WT)w)->at = w->repeat;	1495	((WT)w)->at -= mn_now;
1328		1496
1329	ev_stop (EV_A_ (W)w);	1497	ev_stop (EV_A_ (W)w);
1330	}	1498	}
1331		1499
1332	void	1500	void
1333	ev_timer_again (EV_P_ struct ev_timer *w)	1501	ev_timer_again (EV_P_ ev_timer *w)
1334	{	1502	{
1335	if (ev_is_active (w))	1503	if (ev_is_active (w))
1336	{	1504	{
1337	if (w->repeat)	1505	if (w->repeat)
		1506	{
		1507	((WT)w)->at = mn_now + w->repeat;
1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1508	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1509	}
1339	else	1510	else
1340	ev_timer_stop (EV_A_ w);	1511	ev_timer_stop (EV_A_ w);
1341	}	1512	}
1342	else if (w->repeat)	1513	else if (w->repeat)
		1514	{
		1515	w->at = w->repeat;
1343	ev_timer_start (EV_A_ w);	1516	ev_timer_start (EV_A_ w);
		1517	}
1344	}	1518	}
1345		1519
		1520	#if EV_PERIODIC_ENABLE
1346	void	1521	void
1347	ev_periodic_start (EV_P_ struct ev_periodic *w)	1522	ev_periodic_start (EV_P_ ev_periodic *w)
1348	{	1523	{
1349	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1350	return;	1525	return;
1351		1526
1352	if (w->reschedule_cb)	1527	if (w->reschedule_cb)
1353	((WT)w)->at = w->reschedule_cb (w, rt_now);	1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354	else if (w->interval)	1529	else if (w->interval)
1355	{	1530	{
1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1531	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357	/* this formula differs from the one in periodic_reify because we do not always round up */	1532	/* this formula differs from the one in periodic_reify because we do not always round up */
1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1533	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359	}	1534	}
1360		1535
1361	ev_start (EV_A_ (W)w, ++periodiccnt);	1536	ev_start (EV_A_ (W)w, ++periodiccnt);
1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363	periodics [periodiccnt - 1] = w;	1538	periodics [periodiccnt - 1] = w;
1364	upheap ((WT *)periodics, periodiccnt - 1);	1539	upheap ((WT *)periodics, periodiccnt - 1);
1365		1540
1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367	}	1542	}
1368		1543
1369	void	1544	void
1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1545	ev_periodic_stop (EV_P_ ev_periodic *w)
1371	{	1546	{
1372	ev_clear_pending (EV_A_ (W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1373	if (!ev_is_active (w))	1548	if (expect_false (!ev_is_active (w)))
1374	return;	1549	return;
1375		1550
1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1377		1552
1378	if (((W)w)->active < periodiccnt--)	1553	if (expect_true (((W)w)->active < periodiccnt--))
1379	{	1554	{
1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1382	}	1557	}
1383		1558
1384	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1385	}	1560	}
1386		1561
1387	void	1562	void
1388	ev_periodic_again (EV_P_ struct ev_periodic *w)	1563	ev_periodic_again (EV_P_ ev_periodic *w)
1389	{	1564	{
1390	/* TODO: use adjustheap and recalculation */	1565	/* TODO: use adjustheap and recalculation */
1391	ev_periodic_stop (EV_A_ w);	1566	ev_periodic_stop (EV_A_ w);
1392	ev_periodic_start (EV_A_ w);	1567	ev_periodic_start (EV_A_ w);
1393	}	1568	}
1394		1569	#endif
1395	void
1396	ev_idle_start (EV_P_ struct ev_idle *w)
1397	{
1398	if (ev_is_active (w))
1399	return;
1400
1401	ev_start (EV_A_ (W)w, ++idlecnt);
1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403	idles [idlecnt - 1] = w;
1404	}
1405
1406	void
1407	ev_idle_stop (EV_P_ struct ev_idle *w)
1408	{
1409	ev_clear_pending (EV_A_ (W)w);
1410	if (ev_is_active (w))
1411	return;
1412
1413	idles [((W)w)->active - 1] = idles [--idlecnt];
1414	ev_stop (EV_A_ (W)w);
1415	}
1416
1417	void
1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
1419	{
1420	if (ev_is_active (w))
1421	return;
1422
1423	ev_start (EV_A_ (W)w, ++preparecnt);
1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425	prepares [preparecnt - 1] = w;
1426	}
1427
1428	void
1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430	{
1431	ev_clear_pending (EV_A_ (W)w);
1432	if (ev_is_active (w))
1433	return;
1434
1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436	ev_stop (EV_A_ (W)w);
1437	}
1438
1439	void
1440	ev_check_start (EV_P_ struct ev_check *w)
1441	{
1442	if (ev_is_active (w))
1443	return;
1444
1445	ev_start (EV_A_ (W)w, ++checkcnt);
1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447	checks [checkcnt - 1] = w;
1448	}
1449
1450	void
1451	ev_check_stop (EV_P_ struct ev_check *w)
1452	{
1453	ev_clear_pending (EV_A_ (W)w);
1454	if (ev_is_active (w))
1455	return;
1456
1457	checks [((W)w)->active - 1] = checks [--checkcnt];
1458	ev_stop (EV_A_ (W)w);
1459	}
1460		1570
1461	#ifndef SA_RESTART	1571	#ifndef SA_RESTART
1462	# define SA_RESTART 0	1572	# define SA_RESTART 0
1463	#endif	1573	#endif
1464		1574
1465	void	1575	void
1466	ev_signal_start (EV_P_ struct ev_signal *w)	1576	ev_signal_start (EV_P_ ev_signal *w)
1467	{	1577	{
1468	#if EV_MULTIPLICITY	1578	#if EV_MULTIPLICITY
1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1579	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470	#endif	1580	#endif
1471	if (ev_is_active (w))	1581	if (expect_false (ev_is_active (w)))
1472	return;	1582	return;
1473		1583
1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1584	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475		1585
1476	ev_start (EV_A_ (W)w, 1);	1586	ev_start (EV_A_ (W)w, 1);
1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1587	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1588	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479		1589
1480	if (!((WL)w)->next)	1590	if (!((WL)w)->next)
1481	{	1591	{
1482	#if WIN32	1592	#if _WIN32
1483	signal (w->signum, sighandler);	1593	signal (w->signum, sighandler);
1484	#else	1594	#else
1485	struct sigaction sa;	1595	struct sigaction sa;
1486	sa.sa_handler = sighandler;	1596	sa.sa_handler = sighandler;
1487	sigfillset (&sa.sa_mask);	1597	sigfillset (&sa.sa_mask);
…		…
1490	#endif	1600	#endif
1491	}	1601	}
1492	}	1602	}
1493		1603
1494	void	1604	void
1495	ev_signal_stop (EV_P_ struct ev_signal *w)	1605	ev_signal_stop (EV_P_ ev_signal *w)
1496	{	1606	{
1497	ev_clear_pending (EV_A_ (W)w);	1607	ev_clear_pending (EV_A_ (W)w);
1498	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1499	return;	1609	return;
1500		1610
1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502	ev_stop (EV_A_ (W)w);	1612	ev_stop (EV_A_ (W)w);
1503		1613
1504	if (!signals [w->signum - 1].head)	1614	if (!signals [w->signum - 1].head)
1505	signal (w->signum, SIG_DFL);	1615	signal (w->signum, SIG_DFL);
1506	}	1616	}
1507		1617
1508	void	1618	void
1509	ev_child_start (EV_P_ struct ev_child *w)	1619	ev_child_start (EV_P_ ev_child *w)
1510	{	1620	{
1511	#if EV_MULTIPLICITY	1621	#if EV_MULTIPLICITY
1512	assert (("child watchers are only supported in the default loop", loop == default_loop));	1622	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513	#endif	1623	#endif
1514	if (ev_is_active (w))	1624	if (expect_false (ev_is_active (w)))
1515	return;	1625	return;
1516		1626
1517	ev_start (EV_A_ (W)w, 1);	1627	ev_start (EV_A_ (W)w, 1);
1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1519	}	1629	}
1520		1630
1521	void	1631	void
1522	ev_child_stop (EV_P_ struct ev_child *w)	1632	ev_child_stop (EV_P_ ev_child *w)
1523	{	1633	{
1524	ev_clear_pending (EV_A_ (W)w);	1634	ev_clear_pending (EV_A_ (W)w);
1525	if (ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1526	return;	1636	return;
1527		1637
1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1529	ev_stop (EV_A_ (W)w);	1639	ev_stop (EV_A_ (W)w);
1530	}	1640	}
1531		1641
		1642	#if EV_STAT_ENABLE
		1643
		1644	# ifdef _WIN32
		1645	# undef lstat
		1646	# define lstat(a,b) _stati64 (a,b)
		1647	# endif
		1648
		1649	#define DEF_STAT_INTERVAL 5.0074891
		1650	#define MIN_STAT_INTERVAL 0.1074891
		1651
		1652	void
		1653	ev_stat_stat (EV_P_ ev_stat *w)
		1654	{
		1655	if (lstat (w->path, &w->attr) < 0)
		1656	w->attr.st_nlink = 0;
		1657	else if (!w->attr.st_nlink)
		1658	w->attr.st_nlink = 1;
		1659	}
		1660
		1661	static void
		1662	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1663	{
		1664	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1665
		1666	/* we copy this here each the time so that */
		1667	/* prev has the old value when the callback gets invoked */
		1668	w->prev = w->attr;
		1669	ev_stat_stat (EV_A_ w);
		1670
		1671	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1672	ev_feed_event (EV_A_ w, EV_STAT);
		1673	}
		1674
		1675	void
		1676	ev_stat_start (EV_P_ ev_stat *w)
		1677	{
		1678	if (expect_false (ev_is_active (w)))
		1679	return;
		1680
		1681	/* since we use memcmp, we need to clear any padding data etc. */
		1682	memset (&w->prev, 0, sizeof (ev_statdata));
		1683	memset (&w->attr, 0, sizeof (ev_statdata));
		1684
		1685	ev_stat_stat (EV_A_ w);
		1686
		1687	if (w->interval < MIN_STAT_INTERVAL)
		1688	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1689
		1690	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1691	ev_set_priority (&w->timer, ev_priority (w));
		1692	ev_timer_start (EV_A_ &w->timer);
		1693
		1694	ev_start (EV_A_ (W)w, 1);
		1695	}
		1696
		1697	void
		1698	ev_stat_stop (EV_P_ ev_stat *w)
		1699	{
		1700	ev_clear_pending (EV_A_ (W)w);
		1701	if (expect_false (!ev_is_active (w)))
		1702	return;
		1703
		1704	ev_timer_stop (EV_A_ &w->timer);
		1705
		1706	ev_stop (EV_A_ (W)w);
		1707	}
		1708	#endif
		1709
		1710	void
		1711	ev_idle_start (EV_P_ ev_idle *w)
		1712	{
		1713	if (expect_false (ev_is_active (w)))
		1714	return;
		1715
		1716	ev_start (EV_A_ (W)w, ++idlecnt);
		1717	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1718	idles [idlecnt - 1] = w;
		1719	}
		1720
		1721	void
		1722	ev_idle_stop (EV_P_ ev_idle *w)
		1723	{
		1724	ev_clear_pending (EV_A_ (W)w);
		1725	if (expect_false (!ev_is_active (w)))
		1726	return;
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730	idles [active - 1] = idles [--idlecnt];
		1731	((W)idles [active - 1])->active = active;
		1732	}
		1733
		1734	ev_stop (EV_A_ (W)w);
		1735	}
		1736
		1737	void
		1738	ev_prepare_start (EV_P_ ev_prepare *w)
		1739	{
		1740	if (expect_false (ev_is_active (w)))
		1741	return;
		1742
		1743	ev_start (EV_A_ (W)w, ++preparecnt);
		1744	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1745	prepares [preparecnt - 1] = w;
		1746	}
		1747
		1748	void
		1749	ev_prepare_stop (EV_P_ ev_prepare *w)
		1750	{
		1751	ev_clear_pending (EV_A_ (W)w);
		1752	if (expect_false (!ev_is_active (w)))
		1753	return;
		1754
		1755	{
		1756	int active = ((W)w)->active;
		1757	prepares [active - 1] = prepares [--preparecnt];
		1758	((W)prepares [active - 1])->active = active;
		1759	}
		1760
		1761	ev_stop (EV_A_ (W)w);
		1762	}
		1763
		1764	void
		1765	ev_check_start (EV_P_ ev_check *w)
		1766	{
		1767	if (expect_false (ev_is_active (w)))
		1768	return;
		1769
		1770	ev_start (EV_A_ (W)w, ++checkcnt);
		1771	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1772	checks [checkcnt - 1] = w;
		1773	}
		1774
		1775	void
		1776	ev_check_stop (EV_P_ ev_check *w)
		1777	{
		1778	ev_clear_pending (EV_A_ (W)w);
		1779	if (expect_false (!ev_is_active (w)))
		1780	return;
		1781
		1782	{
		1783	int active = ((W)w)->active;
		1784	checks [active - 1] = checks [--checkcnt];
		1785	((W)checks [active - 1])->active = active;
		1786	}
		1787
		1788	ev_stop (EV_A_ (W)w);
		1789	}
		1790
		1791	#if EV_EMBED_ENABLE
		1792	void noinline
		1793	ev_embed_sweep (EV_P_ ev_embed *w)
		1794	{
		1795	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1796	}
		1797
		1798	static void
		1799	embed_cb (EV_P_ ev_io *io, int revents)
		1800	{
		1801	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1802
		1803	if (ev_cb (w))
		1804	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1805	else
		1806	ev_embed_sweep (loop, w);
		1807	}
		1808
		1809	void
		1810	ev_embed_start (EV_P_ ev_embed *w)
		1811	{
		1812	if (expect_false (ev_is_active (w)))
		1813	return;
		1814
		1815	{
		1816	struct ev_loop *loop = w->loop;
		1817	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1818	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1819	}
		1820
		1821	ev_set_priority (&w->io, ev_priority (w));
		1822	ev_io_start (EV_A_ &w->io);
		1823
		1824	ev_start (EV_A_ (W)w, 1);
		1825	}
		1826
		1827	void
		1828	ev_embed_stop (EV_P_ ev_embed *w)
		1829	{
		1830	ev_clear_pending (EV_A_ (W)w);
		1831	if (expect_false (!ev_is_active (w)))
		1832	return;
		1833
		1834	ev_io_stop (EV_A_ &w->io);
		1835
		1836	ev_stop (EV_A_ (W)w);
		1837	}
		1838	#endif
		1839
		1840	#if EV_FORK_ENABLE
		1841	void
		1842	ev_fork_start (EV_P_ ev_fork *w)
		1843	{
		1844	if (expect_false (ev_is_active (w)))
		1845	return;
		1846
		1847	ev_start (EV_A_ (W)w, ++forkcnt);
		1848	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1849	forks [forkcnt - 1] = w;
		1850	}
		1851
		1852	void
		1853	ev_fork_stop (EV_P_ ev_fork *w)
		1854	{
		1855	ev_clear_pending (EV_A_ (W)w);
		1856	if (expect_false (!ev_is_active (w)))
		1857	return;
		1858
		1859	{
		1860	int active = ((W)w)->active;
		1861	forks [active - 1] = forks [--forkcnt];
		1862	((W)forks [active - 1])->active = active;
		1863	}
		1864
		1865	ev_stop (EV_A_ (W)w);
		1866	}
		1867	#endif
		1868
1532	/*****************************************************************************/	1869	/*****************************************************************************/
1533		1870
1534	struct ev_once	1871	struct ev_once
1535	{	1872	{
1536	struct ev_io io;	1873	ev_io io;
1537	struct ev_timer to;	1874	ev_timer to;
1538	void (*cb)(int revents, void *arg);	1875	void (*cb)(int revents, void *arg);
1539	void *arg;	1876	void *arg;
1540	};	1877	};
1541		1878
1542	static void	1879	static void
…		…
1551		1888
1552	cb (revents, arg);	1889	cb (revents, arg);
1553	}	1890	}
1554		1891
1555	static void	1892	static void
1556	once_cb_io (EV_P_ struct ev_io *w, int revents)	1893	once_cb_io (EV_P_ ev_io *w, int revents)
1557	{	1894	{
1558	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1895	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559	}	1896	}
1560		1897
1561	static void	1898	static void
1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1899	once_cb_to (EV_P_ ev_timer *w, int revents)
1563	{	1900	{
1564	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1901	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565	}	1902	}
1566		1903
1567	void	1904	void
1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1905	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569	{	1906	{
1570	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1907	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571		1908
1572	if (!once)	1909	if (expect_false (!once))
		1910	{
1573	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1911	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574	else	1912	return;
1575	{	1913	}
		1914
1576	once->cb = cb;	1915	once->cb = cb;
1577	once->arg = arg;	1916	once->arg = arg;
1578		1917
1579	ev_init (&once->io, once_cb_io);	1918	ev_init (&once->io, once_cb_io);
1580	if (fd >= 0)	1919	if (fd >= 0)
1581	{	1920	{
1582	ev_io_set (&once->io, fd, events);	1921	ev_io_set (&once->io, fd, events);
1583	ev_io_start (EV_A_ &once->io);	1922	ev_io_start (EV_A_ &once->io);
1584	}	1923	}
1585		1924
1586	ev_init (&once->to, once_cb_to);	1925	ev_init (&once->to, once_cb_to);
1587	if (timeout >= 0.)	1926	if (timeout >= 0.)
1588	{	1927	{
1589	ev_timer_set (&once->to, timeout, 0.);	1928	ev_timer_set (&once->to, timeout, 0.);
1590	ev_timer_start (EV_A_ &once->to);	1929	ev_timer_start (EV_A_ &once->to);
1591	}
1592	}	1930	}
1593	}	1931	}
1594		1932
		1933	#ifdef __cplusplus
		1934	}
		1935	#endif
		1936

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