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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
103	# else	164	# else
104	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
105	# endif	166	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif	167	#endif
111		168
112	/**/	169	/**/
113		170
114	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
122	#endif	179	#endif
123		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
124	/**/	185	/**/
125		186
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		190
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
131	#include "ev.h"	194	# include "ev.h"
		195	#endif
132		196
133	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
135	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
136	#else	207	#else
137	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
138	# define inline static	210	# define inline_size static
		211	# define noinline
139	#endif	212	#endif
140		213
141	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
143		216
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
147	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
150		226
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		228
		229	#ifdef _WIN32
153	#include "ev_win32.c"	230	# include "ev_win32.c"
		231	#endif
154		232
155	/*****************************************************************************/	233	/*****************************************************************************/
156		234
157	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
158		236
		237	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	239	{
161	syserr_cb = cb;	240	syserr_cb = cb;
162	}	241	}
163		242
164	static void	243	static void noinline
165	syserr (const char *msg)	244	syserr (const char *msg)
166	{	245	{
167	if (!msg)	246	if (!msg)
168	msg = "(libev) system error";	247	msg = "(libev) system error";
169		248
…		…
176	}	255	}
177	}	256	}
178		257
179	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, long size);
180		259
		260	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	262	{
183	alloc = cb;	263	alloc = cb;
184	}	264	}
185		265
186	static void *	266	static void *
…		…
205	typedef struct	285	typedef struct
206	{	286	{
207	WL head;	287	WL head;
208	unsigned char events;	288	unsigned char events;
209	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
210	} ANFD;	293	} ANFD;
211		294
212	typedef struct	295	typedef struct
213	{	296	{
214	W w;	297	W w;
215	int events;	298	int events;
216	} ANPENDING;	299	} ANPENDING;
217		300
218	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
219		302
220	struct ev_loop	303	struct ev_loop
221	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	308	#include "ev_vars.h"
224	};
225	# undef VAR	309	#undef VAR
		310	};
226	# include "ev_wrap.h"	311	#include "ev_wrap.h"
		312
		313	static struct ev_loop default_loop_struct;
		314	struct ev_loop *ev_default_loop_ptr;
227		315
228	#else	316	#else
229		317
		318	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	320	#include "ev_vars.h"
232	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
233		324
234	#endif	325	#endif
235		326
236	/*****************************************************************************/	327	/*****************************************************************************/
237		328
238	inline ev_tstamp	329	ev_tstamp
239	ev_time (void)	330	ev_time (void)
240	{	331	{
241	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
242	struct timespec ts;	333	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	340	#endif
250	}	341	}
251		342
252	inline ev_tstamp	343	ev_tstamp inline_size
253	get_clock (void)	344	get_clock (void)
254	{	345	{
255	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
257	{	348	{
…		…
262	#endif	353	#endif
263		354
264	return ev_time ();	355	return ev_time ();
265	}	356	}
266		357
		358	#if EV_MULTIPLICITY
267	ev_tstamp	359	ev_tstamp
268	ev_now (EV_P)	360	ev_now (EV_P)
269	{	361	{
270	return rt_now;	362	return ev_rt_now;
271	}	363	}
		364	#endif
272		365
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		367
275	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
277	{ \	370	{ \
278	int newcnt = cur; \	371	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	389	}
297		390
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		393
306	/*****************************************************************************/	394	/*****************************************************************************/
307		395
308	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
309	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
310	{	426	{
311	while (count--)	427	while (count--)
312	{	428	{
313	base->head = 0;	429	base->head = 0;
…		…
316		432
317	++base;	433	++base;
318	}	434	}
319	}	435	}
320		436
321	void	437	void inline_speed
322	ev_feed_event (EV_P_ void *w, int revents)
323	{
324	W w_ = (W)w;
325
326	if (w_->pending)
327	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;
330	}
331
332	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}
337
338	static void
339	queue_events (EV_P_ W *events, int eventcnt, int type)
340	{
341	int i;
342
343	for (i = 0; i < eventcnt; ++i)
344	ev_feed_event (EV_A_ events [i], type);
345	}
346
347	inline void
348	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
349	{	439	{
350	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	441	ev_io *w;
352		442
353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	443	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
354	{	444	{
355	int ev = w->events & revents;	445	int ev = w->events & revents;
356		446
357	if (ev)	447	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
363	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
364	{	454	{
365	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
366	}	456	}
367		457
368	/*****************************************************************************/	458	void inline_size
369
370	static void
371	fd_reify (EV_P)	459	fd_reify (EV_P)
372	{	460	{
373	int i;	461	int i;
374		462
375	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
376	{	464	{
377	int fd = fdchanges [i];	465	int fd = fdchanges [i];
378	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
379	struct ev_io *w;	467	ev_io *w;
380		468
381	int events = 0;	469	int events = 0;
382		470
383	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
384	events |= w->events;	472	events |= w->events;
385		473
		474	#if EV_SELECT_IS_WINSOCKET
		475	if (events)
		476	{
		477	unsigned long argp;
		478	anfd->handle = _get_osfhandle (fd);
		479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		480	}
		481	#endif
		482
386	anfd->reify = 0;	483	anfd->reify = 0;
387		484
388	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	486	anfd->events = events;
390	}	487	}
391		488
392	fdchangecnt = 0;	489	fdchangecnt = 0;
393	}	490	}
394		491
395	static void	492	void inline_size
396	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
397	{	494	{
398	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
399	return;	496	return;
400		497
401	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
402		499
403	++fdchangecnt;	500	++fdchangecnt;
404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
406	}	503	}
407		504
408	static void	505	void inline_speed
409	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
410	{	507	{
411	struct ev_io *w;	508	ev_io *w;
412		509
413	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
414	{	511	{
415	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
416	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
417	}	514	}
418	}	515	}
419		516
420	static int	517	int inline_size
421	fd_valid (int fd)	518	fd_valid (int fd)
422	{	519	{
423	#ifdef WIN32	520	#ifdef _WIN32
424	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
425	#else	522	#else
426	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
427	#endif	524	#endif
428	}	525	}
429		526
430	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
431	static void	528	static void noinline
432	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
433	{	530	{
434	int fd;	531	int fd;
435		532
436	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
438	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
439	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
440	}	537	}
441		538
442	/* called on ENOMEM in select/poll to kill some fds and retry */	539	/* called on ENOMEM in select/poll to kill some fds and retry */
443	static void	540	static void noinline
444	fd_enomem (EV_P)	541	fd_enomem (EV_P)
445	{	542	{
446	int fd;	543	int fd;
447		544
448	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
451	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
452	return;	549	return;
453	}	550	}
454	}	551	}
455		552
456	/* usually called after fork if method needs to re-arm all fds from scratch */	553	/* usually called after fork if backend needs to re-arm all fds from scratch */
457	static void	554	static void noinline
458	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
459	{	556	{
460	int fd;	557	int fd;
461		558
462	/* this should be highly optimised to not do anything but set a flag */	559	/* this should be highly optimised to not do anything but set a flag */
…		…
468	}	565	}
469	}	566	}
470		567
471	/*****************************************************************************/	568	/*****************************************************************************/
472		569
473	static void	570	void inline_speed
474	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
475	{	572	{
476	WT w = heap [k];	573	WT w = heap [k];
477		574
478	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
485	heap [k] = w;	582	heap [k] = w;
486	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
487		584
488	}	585	}
489		586
490	static void	587	void inline_speed
491	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
492	{	589	{
493	WT w = heap [k];	590	WT w = heap [k];
494		591
495	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
509		606
510	heap [k] = w;	607	heap [k] = w;
511	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
512	}	609	}
513		610
		611	void inline_size
		612	adjustheap (WT *heap, int N, int k)
		613	{
		614	upheap (heap, k);
		615	downheap (heap, N, k);
		616	}
		617
514	/*****************************************************************************/	618	/*****************************************************************************/
515		619
516	typedef struct	620	typedef struct
517	{	621	{
518	WL head;	622	WL head;
…		…
522	static ANSIG *signals;	626	static ANSIG *signals;
523	static int signalmax;	627	static int signalmax;
524		628
525	static int sigpipe [2];	629	static int sigpipe [2];
526	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
527	static struct ev_io sigev;	631	static ev_io sigev;
528		632
529	static void	633	void inline_size
530	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
531	{	635	{
532	while (count--)	636	while (count--)
533	{	637	{
534	base->head = 0;	638	base->head = 0;
…		…
539	}	643	}
540		644
541	static void	645	static void
542	sighandler (int signum)	646	sighandler (int signum)
543	{	647	{
544	#if WIN32	648	#if _WIN32
545	signal (signum, sighandler);	649	signal (signum, sighandler);
546	#endif	650	#endif
547		651
548	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
549		653
550	if (!gotsig)	654	if (!gotsig)
551	{	655	{
552	int old_errno = errno;	656	int old_errno = errno;
553	gotsig = 1;	657	gotsig = 1;
554	#ifdef WIN32
555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556	#else
557	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
558	#endif
559	errno = old_errno;	659	errno = old_errno;
560	}	660	}
561	}	661	}
562		662
563	void	663	void noinline
564	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
565	{	665	{
		666	WL w;
		667
566	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568	#endif	670	#endif
569		671
570	--signum;	672	--signum;
571		673
572	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
577	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
578	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579	}	681	}
580		682
581	static void	683	static void
582	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
583	{	685	{
584	WL w;
585	int signum;	686	int signum;
586		687
587	#ifdef WIN32
588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589	#else
590	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
591	#endif
592	gotsig = 0;	689	gotsig = 0;
593		690
594	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
595	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
596	sigevent (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
597	}	694	}
598		695
599	static void	696	void inline_size
		697	fd_intern (int fd)
		698	{
		699	#ifdef _WIN32
		700	int arg = 1;
		701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		702	#else
		703	fcntl (fd, F_SETFD, FD_CLOEXEC);
		704	fcntl (fd, F_SETFL, O_NONBLOCK);
		705	#endif
		706	}
		707
		708	static void noinline
600	siginit (EV_P)	709	siginit (EV_P)
601	{	710	{
602	#ifndef WIN32	711	fd_intern (sigpipe [0]);
603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606	/* rather than sort out wether we really need nb, set it */
607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609	#endif
610		713
611	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
612	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
613	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
614	}	717	}
615		718
616	/*****************************************************************************/	719	/*****************************************************************************/
617		720
618	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
619		722
620	#ifndef WIN32	723	#ifndef _WIN32
621		724
622	static struct ev_signal childev;	725	static ev_signal childev;
623		726
624	#ifndef WCONTINUED	727	void inline_speed
625	# define WCONTINUED 0
626	#endif
627
628	static void
629	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
630	{	729	{
631	struct ev_child *w;	730	ev_child *w;
632		731
633	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
634	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
635	{	734	{
636	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637	w->rpid = pid;	736	w->rpid = pid;
638	w->rstatus = status;	737	w->rstatus = status;
639	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
640	}	739	}
641	}	740	}
642		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
643	static void	746	static void
644	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
645	{	748	{
646	int pid, status;	749	int pid, status;
647		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
650	/* make sure we are called again until all childs have been reaped */	758	/* make sure we are called again until all childs have been reaped */
		759	/* we need to do it this way so that the callback gets called before we continue */
651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652		761
653	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	764	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655	}
656	}	765	}
657		766
658	#endif	767	#endif
659		768
660	/*****************************************************************************/	769	/*****************************************************************************/
661		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
662	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
664	#endif	776	#endif
665	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
683	{	795	{
684	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
685	}	797	}
686		798
687	/* return true if we are running with elevated privileges and should ignore env variables */	799	/* return true if we are running with elevated privileges and should ignore env variables */
688	static int	800	int inline_size
689	enable_secure (void)	801	enable_secure (void)
690	{	802	{
691	#ifdef WIN32	803	#ifdef _WIN32
692	return 0;	804	return 0;
693	#else	805	#else
694	return getuid () != geteuid ()	806	return getuid () != geteuid ()
695	|| getgid () != getegid ();	807	|| getgid () != getegid ();
696	#endif	808	#endif
697	}	809	}
698		810
699	int	811	unsigned int
700	ev_method (EV_P)	812	ev_supported_backends (void)
701	{	813	{
702	return method;	814	unsigned int flags = 0;
		815
		816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		817	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		818	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		819	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		820	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		821
		822	return flags;
		823	}
		824
		825	unsigned int
		826	ev_recommended_backends (void)
		827	{
		828	unsigned int flags = ev_supported_backends ();
		829
		830	#ifndef __NetBSD__
		831	/* kqueue is borked on everything but netbsd apparently */
		832	/* it usually doesn't work correctly on anything but sockets and pipes */
		833	flags &= ~EVBACKEND_KQUEUE;
		834	#endif
		835	#ifdef __APPLE__
		836	// flags &= ~EVBACKEND_KQUEUE; for documentation
		837	flags &= ~EVBACKEND_POLL;
		838	#endif
		839
		840	return flags;
		841	}
		842
		843	unsigned int
		844	ev_embeddable_backends (void)
		845	{
		846	return EVBACKEND_EPOLL
		847	| EVBACKEND_KQUEUE
		848	| EVBACKEND_PORT;
		849	}
		850
		851	unsigned int
		852	ev_backend (EV_P)
		853	{
		854	return backend;
703	}	855	}
704		856
705	static void	857	static void
706	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
707	{	859	{
708	if (!method)	860	if (!backend)
709	{	861	{
710	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
711	{	863	{
712	struct timespec ts;	864	struct timespec ts;
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	866	have_monotonic = 1;
715	}	867	}
716	#endif	868	#endif
717		869
718	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	871	mn_now = get_clock ();
720	now_floor = mn_now;	872	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
722		874
723	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else
727	methods = EVMETHOD_ANY;
728		879
729	method = 0;	880	if (!(flags & 0x0000ffffUL))
730	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732	#endif	886	#endif
733	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735	#endif	889	#endif
736	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738	#endif	892	#endif
739	#if EV_USE_POLL	893	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741	#endif	895	#endif
742	#if EV_USE_SELECT	896	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744	#endif	898	#endif
745		899
746	ev_watcher_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
748	}	902	}
749	}	903	}
750		904
751	void	905	static void
752	loop_destroy (EV_P)	906	loop_destroy (EV_P)
753	{	907	{
754	int i;	908	int i;
755		909
756	#if EV_USE_WIN32	910	#if EV_USE_PORT
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	912	#endif
759	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	915	#endif
762	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	918	#endif
765	#if EV_USE_POLL	919	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	921	#endif
768	#if EV_USE_SELECT	922	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	924	#endif
771		925
772	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
773	array_free (pending, [i]);	927	array_free (pending, [i]);
774		928
775	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
777	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
778	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
779	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
780	array_free_microshit (prepare);	934	#endif
781	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
782		938
783	method = 0;	939	backend = 0;
784	}	940	}
785		941
786	static void	942	static void
787	loop_fork (EV_P)	943	loop_fork (EV_P)
788	{	944	{
		945	#if EV_USE_PORT
		946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		947	#endif
		948	#if EV_USE_KQUEUE
		949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		950	#endif
789	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif
792	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794	#endif	953	#endif
795		954
796	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
797	{	956	{
798	/* default loop */	957	/* default loop */
…		…
811	postfork = 0;	970	postfork = 0;
812	}	971	}
813		972
814	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
815	struct ev_loop *	974	struct ev_loop *
816	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
817	{	976	{
818	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	977	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819		978
820	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
821		980
822	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
823		982
824	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
825	return loop;	984	return loop;
826		985
827	return 0;	986	return 0;
828	}	987	}
829		988
…		…
841	}	1000	}
842		1001
843	#endif	1002	#endif
844		1003
845	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
850	#else	1007	#else
851	static int default_loop;
852
853	int	1008	int
		1009	ev_default_loop (unsigned int flags)
854	#endif	1010	#endif
855	ev_default_loop (int methods)
856	{	1011	{
857	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
859	return 0;	1014	return 0;
860		1015
861	if (!default_loop)	1016	if (!ev_default_loop_ptr)
862	{	1017	{
863	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	1020	#else
866	default_loop = 1;	1021	ev_default_loop_ptr = 1;
867	#endif	1022	#endif
868		1023
869	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
870		1025
871	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
872	{	1027	{
873	siginit (EV_A);	1028	siginit (EV_A);
874		1029
875	#ifndef WIN32	1030	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	1035	#endif
881	}	1036	}
882	else	1037	else
883	default_loop = 0;	1038	ev_default_loop_ptr = 0;
884	}	1039	}
885		1040
886	return default_loop;	1041	return ev_default_loop_ptr;
887	}	1042	}
888		1043
889	void	1044	void
890	ev_default_destroy (void)	1045	ev_default_destroy (void)
891	{	1046	{
892	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1049	#endif
895		1050
896	#ifndef WIN32	1051	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
899	#endif	1054	#endif
900		1055
901	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
909		1064
910	void	1065	void
911	ev_default_fork (void)	1066	ev_default_fork (void)
912	{	1067	{
913	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1070	#endif
916		1071
917	if (method)	1072	if (backend)
918	postfork = 1;	1073	postfork = 1;
919	}	1074	}
920		1075
921	/*****************************************************************************/	1076	/*****************************************************************************/
922		1077
923	static int	1078	int inline_size
924	any_pending (EV_P)	1079	any_pending (EV_P)
925	{	1080	{
926	int pri;	1081	int pri;
927		1082
928	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
930	return 1;	1085	return 1;
931		1086
932	return 0;	1087	return 0;
933	}	1088	}
934		1089
935	static void	1090	void inline_speed
936	call_pending (EV_P)	1091	call_pending (EV_P)
937	{	1092	{
938	int pri;	1093	int pri;
939		1094
940	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
942	{	1097	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1099
945	if (p->w)	1100	if (expect_true (p->w))
946	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
947	p->w->pending = 0;	1104	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
949	}	1106	}
950	}	1107	}
951	}	1108	}
952		1109
953	static void	1110	void inline_size
954	timers_reify (EV_P)	1111	timers_reify (EV_P)
955	{	1112	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1114	{
958	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
959		1116
960	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
961		1118
962	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
963	if (w->repeat)	1120	if (w->repeat)
964	{	1121	{
965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1123
966	((WT)w)->at = mn_now + w->repeat;	1124	((WT)w)->at += w->repeat;
		1125	if (((WT)w)->at < mn_now)
		1126	((WT)w)->at = mn_now;
		1127
967	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
968	}	1129	}
969	else	1130	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1132
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1134	}
974	}	1135	}
975		1136
976	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
977	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
978	{	1140	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1142	{
981	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
982		1144
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984		1146
985	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
987	{	1149	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
989
990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
992	}	1153	}
993	else if (w->interval)	1154	else if (w->interval)
994	{	1155	{
995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
996	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
998	}	1159	}
999	else	1160	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1162
1002	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1003	}	1164	}
1004	}	1165	}
1005		1166
1006	static void	1167	static void noinline
1007	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1008	{	1169	{
1009	int i;	1170	int i;
1010		1171
1011	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1012	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1013	{	1174	{
1014	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1015		1176
1016	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1179	else if (w->interval)
1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1020	}	1181	}
1021		1182
1022	/* now rebuild the heap */	1183	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1025	}	1186	}
		1187	#endif
1026		1188
1027	inline int	1189	int inline_size
1028	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1029	{	1191	{
1030	mn_now = get_clock ();	1192	mn_now = get_clock ();
1031		1193
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{	1195	{
1034	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
1035	return 0;	1197	return 0;
1036	}	1198	}
1037	else	1199	else
1038	{	1200	{
1039	now_floor = mn_now;	1201	now_floor = mn_now;
1040	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1041	return 1;	1203	return 1;
1042	}	1204	}
1043	}	1205	}
1044		1206
1045	static void	1207	void inline_size
1046	time_update (EV_P)	1208	time_update (EV_P)
1047	{	1209	{
1048	int i;	1210	int i;
1049		1211
1050	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1052	{	1214	{
1053	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1054	{	1216	{
1055	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1056		1218
1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1219	/* loop a few times, before making important decisions.
		1220	* on the choice of "4": one iteration isn't enough,
		1221	* in case we get preempted during the calls to
		1222	* ev_time and get_clock. a second call is almost guarenteed
		1223	* to succeed in that case, though. and looping a few more times
		1224	* doesn't hurt either as we only do this on time-jumps or
		1225	* in the unlikely event of getting preempted here.
		1226	*/
		1227	for (i = 4; --i; )
1058	{	1228	{
1059	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1060		1230
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1232	return; /* all is well */
1063		1233
1064	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1235	mn_now = get_clock ();
1066	now_floor = mn_now;	1236	now_floor = mn_now;
1067	}	1237	}
1068		1238
		1239	# if EV_PERIODIC_ENABLE
1069	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1072	}	1244	}
1073	}	1245	}
1074	else	1246	else
1075	#endif	1247	#endif
1076	{	1248	{
1077	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1078		1250
1079	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1081	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1082		1256
1083	/* adjust timers. this is easy, as the offset is the same for all */	1257	/* adjust timers. this is easy, as the offset is the same for all */
1084	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1086	}	1260	}
1087		1261
1088	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1089	}	1263	}
1090	}	1264	}
1091		1265
1092	void	1266	void
1093	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1104	static int loop_done;	1278	static int loop_done;
1105		1279
1106	void	1280	void
1107	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1108	{	1282	{
1109	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1111		1286
1112	do	1287	while (activecnt)
1113	{	1288	{
		1289	/* we might have forked, so reify kernel state if necessary */
		1290	#if EV_FORK_ENABLE
		1291	if (expect_false (postfork))
		1292	if (forkcnt)
		1293	{
		1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1295	call_pending (EV_A);
		1296	}
		1297	#endif
		1298
1114	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1115	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1116	{	1301	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1118	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1124		1309
1125	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1126	fd_reify (EV_A);	1311	fd_reify (EV_A);
1127		1312
1128	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1129		1316
1130	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1131	always have timers, we just calculate it always */	1318	block = 0.; /* do not block at all */
		1319	else
		1320	{
		1321	/* update time to cancel out callback processing overhead */
1132	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1133	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1135	else	1325	else
1136	#endif	1326	#endif
1137	{	1327	{
1138	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1139	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1140	}	1330	}
1141		1331
1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
1143	block = 0.;
1144	else
1145	{
1146	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1147		1333
1148	if (timercnt)	1334	if (timercnt)
1149	{	1335	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151	if (block > to) block = to;	1337	if (block > to) block = to;
1152	}	1338	}
1153		1339
		1340	#if EV_PERIODIC_ENABLE
1154	if (periodiccnt)	1341	if (periodiccnt)
1155	{	1342	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157	if (block > to) block = to;	1344	if (block > to) block = to;
1158	}	1345	}
		1346	#endif
1159		1347
1160	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1161	}	1349	}
1162		1350
1163	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1164		1353
1165	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1355	time_update (EV_A);
1167		1356
1168	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1170	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1171		1362
1172	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1173	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1175		1366
1176	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1368	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1370
1180	call_pending (EV_A);	1371	call_pending (EV_A);
1181	}
1182	while (activecnt && !loop_done);
1183		1372
1184	if (loop_done != 2)	1373	if (expect_false (loop_done))
1185	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1186	}	1379	}
1187		1380
1188	void	1381	void
1189	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1190	{	1383	{
1191	loop_done = how;	1384	loop_done = how;
1192	}	1385	}
1193		1386
1194	/*****************************************************************************/	1387	/*****************************************************************************/
1195		1388
1196	inline void	1389	void inline_size
1197	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1198	{	1391	{
1199	elem->next = *head;	1392	elem->next = *head;
1200	*head = elem;	1393	*head = elem;
1201	}	1394	}
1202		1395
1203	inline void	1396	void inline_size
1204	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1205	{	1398	{
1206	while (*head)	1399	while (*head)
1207	{	1400	{
1208	if (*head == elem)	1401	if (*head == elem)
…		…
1213		1406
1214	head = &(*head)->next;	1407	head = &(*head)->next;
1215	}	1408	}
1216	}	1409	}
1217		1410
1218	inline void	1411	void inline_speed
1219	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1220	{	1413	{
1221	if (w->pending)	1414	if (w->pending)
1222	{	1415	{
1223	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1224	w->pending = 0;	1417	w->pending = 0;
1225	}	1418	}
1226	}	1419	}
1227		1420
1228	inline void	1421	void inline_speed
1229	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1230	{	1423	{
1231	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1232	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1233		1426
1234	w->active = active;	1427	w->active = active;
1235	ev_ref (EV_A);	1428	ev_ref (EV_A);
1236	}	1429	}
1237		1430
1238	inline void	1431	void inline_size
1239	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1240	{	1433	{
1241	ev_unref (EV_A);	1434	ev_unref (EV_A);
1242	w->active = 0;	1435	w->active = 0;
1243	}	1436	}
1244		1437
1245	/*****************************************************************************/	1438	/*****************************************************************************/
1246		1439
1247	void	1440	void
1248	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1249	{	1442	{
1250	int fd = w->fd;	1443	int fd = w->fd;
1251		1444
1252	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1253	return;	1446	return;
1254		1447
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1449
1257	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1260		1453
1261	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1262	}	1455	}
1263		1456
1264	void	1457	void
1265	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1266	{	1459	{
1267	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1269	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270		1465
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1273		1468
1274	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1275	}	1470	}
1276		1471
1277	void	1472	void
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1279	{	1474	{
1280	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1281	return;	1476	return;
1282		1477
1283	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1284		1479
1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286		1481
1287	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1290	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1291		1486
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293	}	1488	}
1294		1489
1295	void	1490	void
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1297	{	1492	{
1298	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1300	return;	1495	return;
1301		1496
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303		1498
1304	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1305	{	1500	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1308	}	1503	}
1309		1504
1310	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1311		1506
1312	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1313	}	1508	}
1314		1509
1315	void	1510	void
1316	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1317	{	1512	{
1318	if (ev_is_active (w))	1513	if (ev_is_active (w))
1319	{	1514	{
1320	if (w->repeat)	1515	if (w->repeat)
1321	{	1516	{
1322	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324	}	1519	}
1325	else	1520	else
1326	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1327	}	1522	}
1328	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1330	}	1528	}
1331		1529
		1530	#if EV_PERIODIC_ENABLE
1332	void	1531	void
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1334	{	1533	{
1335	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1336	return;	1535	return;
1337		1536
1338	if (w->reschedule_cb)	1537	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1539	else if (w->interval)
1341	{	1540	{
1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343	/* this formula differs from the one in periodic_reify because we do not always round up */	1542	/* this formula differs from the one in periodic_reify because we do not always round up */
1344	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345	}	1544	}
1346		1545
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1351		1550
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353	}	1552	}
1354		1553
1355	void	1554	void
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1357	{	1556	{
1358	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1360	return;	1559	return;
1361		1560
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363		1562
1364	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1365	{	1564	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1368	}	1567	}
1369		1568
1370	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1371	}	1570	}
1372		1571
1373	void	1572	void
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1375	{	1574	{
		1575	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1576	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1577	ev_periodic_start (EV_A_ w);
1378	}	1578	}
1379		1579	#endif
1380	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)
1382	{
1383	if (ev_is_active (w))
1384	return;
1385
1386	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388	idles [idlecnt - 1] = w;
1389	}
1390
1391	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)
1393	{
1394	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))
1396	return;
1397
1398	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);
1400	}
1401
1402	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)
1404	{
1405	if (ev_is_active (w))
1406	return;
1407
1408	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410	prepares [preparecnt - 1] = w;
1411	}
1412
1413	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415	{
1416	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))
1418	return;
1419
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);
1422	}
1423
1424	void
1425	ev_check_start (EV_P_ struct ev_check *w)
1426	{
1427	if (ev_is_active (w))
1428	return;
1429
1430	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432	checks [checkcnt - 1] = w;
1433	}
1434
1435	void
1436	ev_check_stop (EV_P_ struct ev_check *w)
1437	{
1438	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))
1440	return;
1441
1442	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);
1444	}
1445		1580
1446	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1447	# define SA_RESTART 0	1582	# define SA_RESTART 0
1448	#endif	1583	#endif
1449		1584
1450	void	1585	void
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1452	{	1587	{
1453	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1590	#endif
1456	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1457	return;	1592	return;
1458		1593
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1595
1461	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464		1599
1465	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1466	{	1601	{
1467	#if WIN32	1602	#if _WIN32
1468	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1469	#else	1604	#else
1470	struct sigaction sa;	1605	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1475	#endif	1610	#endif
1476	}	1611	}
1477	}	1612	}
1478		1613
1479	void	1614	void
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1481	{	1616	{
1482	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1484	return;	1619	return;
1485		1620
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1488		1623
1489	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1490	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1491	}	1626	}
1492		1627
1493	void	1628	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1495	{	1630	{
1496	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1632	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1633	#endif
1499	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1500	return;	1635	return;
1501		1636
1502	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1504	}	1639	}
1505		1640
1506	void	1641	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1508	{	1643	{
1509	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1511	return;	1646	return;
1512		1647
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1515	}	1650	}
1516		1651
		1652	#if EV_STAT_ENABLE
		1653
		1654	# ifdef _WIN32
		1655	# undef lstat
		1656	# define lstat(a,b) _stati64 (a,b)
		1657	# endif
		1658
		1659	#define DEF_STAT_INTERVAL 5.0074891
		1660	#define MIN_STAT_INTERVAL 0.1074891
		1661
		1662	void
		1663	ev_stat_stat (EV_P_ ev_stat *w)
		1664	{
		1665	if (lstat (w->path, &w->attr) < 0)
		1666	w->attr.st_nlink = 0;
		1667	else if (!w->attr.st_nlink)
		1668	w->attr.st_nlink = 1;
		1669	}
		1670
		1671	static void
		1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1673	{
		1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1675
		1676	/* we copy this here each the time so that */
		1677	/* prev has the old value when the callback gets invoked */
		1678	w->prev = w->attr;
		1679	ev_stat_stat (EV_A_ w);
		1680
		1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1682	ev_feed_event (EV_A_ w, EV_STAT);
		1683	}
		1684
		1685	void
		1686	ev_stat_start (EV_P_ ev_stat *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	/* since we use memcmp, we need to clear any padding data etc. */
		1692	memset (&w->prev, 0, sizeof (ev_statdata));
		1693	memset (&w->attr, 0, sizeof (ev_statdata));
		1694
		1695	ev_stat_stat (EV_A_ w);
		1696
		1697	if (w->interval < MIN_STAT_INTERVAL)
		1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1699
		1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1701	ev_set_priority (&w->timer, ev_priority (w));
		1702	ev_timer_start (EV_A_ &w->timer);
		1703
		1704	ev_start (EV_A_ (W)w, 1);
		1705	}
		1706
		1707	void
		1708	ev_stat_stop (EV_P_ ev_stat *w)
		1709	{
		1710	ev_clear_pending (EV_A_ (W)w);
		1711	if (expect_false (!ev_is_active (w)))
		1712	return;
		1713
		1714	ev_timer_stop (EV_A_ &w->timer);
		1715
		1716	ev_stop (EV_A_ (W)w);
		1717	}
		1718	#endif
		1719
		1720	void
		1721	ev_idle_start (EV_P_ ev_idle *w)
		1722	{
		1723	if (expect_false (ev_is_active (w)))
		1724	return;
		1725
		1726	ev_start (EV_A_ (W)w, ++idlecnt);
		1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1728	idles [idlecnt - 1] = w;
		1729	}
		1730
		1731	void
		1732	ev_idle_stop (EV_P_ ev_idle *w)
		1733	{
		1734	ev_clear_pending (EV_A_ (W)w);
		1735	if (expect_false (!ev_is_active (w)))
		1736	return;
		1737
		1738	{
		1739	int active = ((W)w)->active;
		1740	idles [active - 1] = idles [--idlecnt];
		1741	((W)idles [active - 1])->active = active;
		1742	}
		1743
		1744	ev_stop (EV_A_ (W)w);
		1745	}
		1746
		1747	void
		1748	ev_prepare_start (EV_P_ ev_prepare *w)
		1749	{
		1750	if (expect_false (ev_is_active (w)))
		1751	return;
		1752
		1753	ev_start (EV_A_ (W)w, ++preparecnt);
		1754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1755	prepares [preparecnt - 1] = w;
		1756	}
		1757
		1758	void
		1759	ev_prepare_stop (EV_P_ ev_prepare *w)
		1760	{
		1761	ev_clear_pending (EV_A_ (W)w);
		1762	if (expect_false (!ev_is_active (w)))
		1763	return;
		1764
		1765	{
		1766	int active = ((W)w)->active;
		1767	prepares [active - 1] = prepares [--preparecnt];
		1768	((W)prepares [active - 1])->active = active;
		1769	}
		1770
		1771	ev_stop (EV_A_ (W)w);
		1772	}
		1773
		1774	void
		1775	ev_check_start (EV_P_ ev_check *w)
		1776	{
		1777	if (expect_false (ev_is_active (w)))
		1778	return;
		1779
		1780	ev_start (EV_A_ (W)w, ++checkcnt);
		1781	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1782	checks [checkcnt - 1] = w;
		1783	}
		1784
		1785	void
		1786	ev_check_stop (EV_P_ ev_check *w)
		1787	{
		1788	ev_clear_pending (EV_A_ (W)w);
		1789	if (expect_false (!ev_is_active (w)))
		1790	return;
		1791
		1792	{
		1793	int active = ((W)w)->active;
		1794	checks [active - 1] = checks [--checkcnt];
		1795	((W)checks [active - 1])->active = active;
		1796	}
		1797
		1798	ev_stop (EV_A_ (W)w);
		1799	}
		1800
		1801	#if EV_EMBED_ENABLE
		1802	void noinline
		1803	ev_embed_sweep (EV_P_ ev_embed *w)
		1804	{
		1805	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1806	}
		1807
		1808	static void
		1809	embed_cb (EV_P_ ev_io *io, int revents)
		1810	{
		1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1812
		1813	if (ev_cb (w))
		1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1815	else
		1816	ev_embed_sweep (loop, w);
		1817	}
		1818
		1819	void
		1820	ev_embed_start (EV_P_ ev_embed *w)
		1821	{
		1822	if (expect_false (ev_is_active (w)))
		1823	return;
		1824
		1825	{
		1826	struct ev_loop *loop = w->loop;
		1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1829	}
		1830
		1831	ev_set_priority (&w->io, ev_priority (w));
		1832	ev_io_start (EV_A_ &w->io);
		1833
		1834	ev_start (EV_A_ (W)w, 1);
		1835	}
		1836
		1837	void
		1838	ev_embed_stop (EV_P_ ev_embed *w)
		1839	{
		1840	ev_clear_pending (EV_A_ (W)w);
		1841	if (expect_false (!ev_is_active (w)))
		1842	return;
		1843
		1844	ev_io_stop (EV_A_ &w->io);
		1845
		1846	ev_stop (EV_A_ (W)w);
		1847	}
		1848	#endif
		1849
		1850	#if EV_FORK_ENABLE
		1851	void
		1852	ev_fork_start (EV_P_ ev_fork *w)
		1853	{
		1854	if (expect_false (ev_is_active (w)))
		1855	return;
		1856
		1857	ev_start (EV_A_ (W)w, ++forkcnt);
		1858	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1859	forks [forkcnt - 1] = w;
		1860	}
		1861
		1862	void
		1863	ev_fork_stop (EV_P_ ev_fork *w)
		1864	{
		1865	ev_clear_pending (EV_A_ (W)w);
		1866	if (expect_false (!ev_is_active (w)))
		1867	return;
		1868
		1869	{
		1870	int active = ((W)w)->active;
		1871	forks [active - 1] = forks [--forkcnt];
		1872	((W)forks [active - 1])->active = active;
		1873	}
		1874
		1875	ev_stop (EV_A_ (W)w);
		1876	}
		1877	#endif
		1878
1517	/*****************************************************************************/	1879	/*****************************************************************************/
1518		1880
1519	struct ev_once	1881	struct ev_once
1520	{	1882	{
1521	struct ev_io io;	1883	ev_io io;
1522	struct ev_timer to;	1884	ev_timer to;
1523	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1524	void *arg;	1886	void *arg;
1525	};	1887	};
1526		1888
1527	static void	1889	static void
…		…
1536		1898
1537	cb (revents, arg);	1899	cb (revents, arg);
1538	}	1900	}
1539		1901
1540	static void	1902	static void
1541	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1542	{	1904	{
1543	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1905	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544	}	1906	}
1545		1907
1546	static void	1908	static void
1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1548	{	1910	{
1549	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1911	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550	}	1912	}
1551		1913
1552	void	1914	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1915	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554	{	1916	{
1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556		1918
1557	if (!once)	1919	if (expect_false (!once))
		1920	{
1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559	else	1922	return;
1560	{	1923	}
		1924
1561	once->cb = cb;	1925	once->cb = cb;
1562	once->arg = arg;	1926	once->arg = arg;
1563		1927
1564	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	1929	if (fd >= 0)
1566	{	1930	{
1567	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1569	}	1933	}
1570		1934
1571	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	1936	if (timeout >= 0.)
1573	{	1937	{
1574	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	1940	}
1578	}	1941	}
1579		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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