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Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 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>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# 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
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# 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
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
98	# ifdef WIN32	158	# define EV_USE_PORT 0
99	# define EV_USE_WIN32 1	159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
100	# else	164	# else
101	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
102	# endif	166	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME
106	# define EV_USE_REALTIME 1
107	#endif	167	#endif
108		168
109	/**/	169	/**/
110		170
111	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
119	#endif	179	#endif
120		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
121	/**/	185	/**/
122		186
123	#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) */
124	#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) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#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 */
127		190
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
128	#include "ev.h"	194	# include "ev.h"
		195	#endif
129		196
130	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	207	#else
134	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
135	# define inline static	210	# define inline_size static
		211	# define noinline
136	#endif	212	#endif
137		213
138	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
140		216
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
144	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
147		226
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		228
150	#if WIN32	229	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	230	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	231	#endif
155		232
156	/*****************************************************************************/	233	/*****************************************************************************/
157		234
158	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
159		236
		237	void
160	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
161	{	239	{
162	syserr_cb = cb;	240	syserr_cb = cb;
163	}	241	}
164		242
165	static void	243	static void noinline
166	syserr (const char *msg)	244	syserr (const char *msg)
167	{	245	{
168	if (!msg)	246	if (!msg)
169	msg = "(libev) system error";	247	msg = "(libev) system error";
170		248
…		…
177	}	255	}
178	}	256	}
179		257
180	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, long size);
181		259
		260	void
182	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, long size))
183	{	262	{
184	alloc = cb;	263	alloc = cb;
185	}	264	}
186		265
187	static void *	266	static void *
…		…
206	typedef struct	285	typedef struct
207	{	286	{
208	WL head;	287	WL head;
209	unsigned char events;	288	unsigned char events;
210	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
211	} ANFD;	293	} ANFD;
212		294
213	typedef struct	295	typedef struct
214	{	296	{
215	W w;	297	W w;
216	int events;	298	int events;
217	} ANPENDING;	299	} ANPENDING;
218		300
219	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
220		302
221	struct ev_loop	303	struct ev_loop
222	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	308	#include "ev_vars.h"
225	};
226	# undef VAR	309	#undef VAR
		310	};
227	# 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;
228		315
229	#else	316	#else
230		317
		318	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	320	#include "ev_vars.h"
233	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
234		324
235	#endif	325	#endif
236		326
237	/*****************************************************************************/	327	/*****************************************************************************/
238		328
239	inline ev_tstamp	329	ev_tstamp
240	ev_time (void)	330	ev_time (void)
241	{	331	{
242	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
243	struct timespec ts;	333	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
248	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
249	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
250	#endif	340	#endif
251	}	341	}
252		342
253	inline ev_tstamp	343	ev_tstamp inline_size
254	get_clock (void)	344	get_clock (void)
255	{	345	{
256	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
257	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
258	{	348	{
…		…
263	#endif	353	#endif
264		354
265	return ev_time ();	355	return ev_time ();
266	}	356	}
267		357
		358	#if EV_MULTIPLICITY
268	ev_tstamp	359	ev_tstamp
269	ev_now (EV_P)	360	ev_now (EV_P)
270	{	361	{
271	return rt_now;	362	return ev_rt_now;
272	}	363	}
		364	#endif
273		365
274	#define array_roundsize(base,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
275		367
276	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
278	{ \	370	{ \
279	int newcnt = cur; \	371	int newcnt = cur; \
280	do \	372	do \
281	{ \	373	{ \
282	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
283	} \	375	} \
284	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
285	\	377	\
286	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	378	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
287	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
288	cur = newcnt; \	380	cur = newcnt; \
289	}	381	}
290		382
291	#define array_slim(stem) \	383	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	385	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
297	}	389	}
298		390
299	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
300	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;
301		393
302	/*****************************************************************************/	394	/*****************************************************************************/
303		395
304	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
305	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
306	{	426	{
307	while (count--)	427	while (count--)
308	{	428	{
309	base->head = 0;	429	base->head = 0;
…		…
312		432
313	++base;	433	++base;
314	}	434	}
315	}	435	}
316		436
317	static void	437	void inline_speed
318	event (EV_P_ W w, int events)
319	{
320	if (w->pending)
321	{
322	pendings [ABSPRI (w)][w->pending - 1].events |= events;
323	return;
324	}
325
326	w->pending = ++pendingcnt [ABSPRI (w)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
328	pendings [ABSPRI (w)][w->pending - 1].w = w;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;
330	}
331
332	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{
335	int i;
336
337	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);
339	}
340
341	static void
342	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
343	{	439	{
344	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	441	ev_io *w;
346		442
347	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)
348	{	444	{
349	int ev = w->events & events;	445	int ev = w->events & revents;
350		446
351	if (ev)	447	if (ev)
352	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
353	}	449	}
354	}	450	}
355		451
356	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
357		457
358	static void	458	void inline_size
359	fd_reify (EV_P)	459	fd_reify (EV_P)
360	{	460	{
361	int i;	461	int i;
362		462
363	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
364	{	464	{
365	int fd = fdchanges [i];	465	int fd = fdchanges [i];
366	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
367	struct ev_io *w;	467	ev_io *w;
368		468
369	int events = 0;	469	int events = 0;
370		470
371	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)
372	events |= w->events;	472	events |= w->events;
373		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
374	anfd->reify = 0;	483	anfd->reify = 0;
375		484
376	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	486	anfd->events = events;
378	}	487	}
379		488
380	fdchangecnt = 0;	489	fdchangecnt = 0;
381	}	490	}
382		491
383	static void	492	void inline_size
384	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
385	{	494	{
386	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
387	return;	496	return;
388		497
389	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
390		499
391	++fdchangecnt;	500	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
394	}	503	}
395		504
396	static void	505	void inline_speed
397	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
398	{	507	{
399	struct ev_io *w;	508	ev_io *w;
400		509
401	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
402	{	511	{
403	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
404	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);
405	}	514	}
		515	}
		516
		517	int inline_size
		518	fd_valid (int fd)
		519	{
		520	#ifdef _WIN32
		521	return _get_osfhandle (fd) != -1;
		522	#else
		523	return fcntl (fd, F_GETFD) != -1;
		524	#endif
406	}	525	}
407		526
408	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
409	static void	528	static void noinline
410	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
411	{	530	{
412	int fd;	531	int fd;
413		532
414	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	534	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
418	}	537	}
419		538
420	/* 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 */
421	static void	540	static void noinline
422	fd_enomem (EV_P)	541	fd_enomem (EV_P)
423	{	542	{
424	int fd;	543	int fd;
425		544
426	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
429	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
430	return;	549	return;
431	}	550	}
432	}	551	}
433		552
434	/* 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 */
435	static void	554	static void noinline
436	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
437	{	556	{
438	int fd;	557	int fd;
439		558
440	/* 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 */
…		…
446	}	565	}
447	}	566	}
448		567
449	/*****************************************************************************/	568	/*****************************************************************************/
450		569
451	static void	570	void inline_speed
452	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
453	{	572	{
454	WT w = heap [k];	573	WT w = heap [k];
455		574
456	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
463	heap [k] = w;	582	heap [k] = w;
464	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
465		584
466	}	585	}
467		586
468	static void	587	void inline_speed
469	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
470	{	589	{
471	WT w = heap [k];	590	WT w = heap [k];
472		591
473	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
487		606
488	heap [k] = w;	607	heap [k] = w;
489	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
490	}	609	}
491		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
492	/*****************************************************************************/	618	/*****************************************************************************/
493		619
494	typedef struct	620	typedef struct
495	{	621	{
496	WL head;	622	WL head;
…		…
500	static ANSIG *signals;	626	static ANSIG *signals;
501	static int signalmax;	627	static int signalmax;
502		628
503	static int sigpipe [2];	629	static int sigpipe [2];
504	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
505	static struct ev_io sigev;	631	static ev_io sigev;
506		632
507	static void	633	void inline_size
508	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
509	{	635	{
510	while (count--)	636	while (count--)
511	{	637	{
512	base->head = 0;	638	base->head = 0;
…		…
517	}	643	}
518		644
519	static void	645	static void
520	sighandler (int signum)	646	sighandler (int signum)
521	{	647	{
522	#if WIN32	648	#if _WIN32
523	signal (signum, sighandler);	649	signal (signum, sighandler);
524	#endif	650	#endif
525		651
526	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
527		653
…		…
532	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	659	errno = old_errno;
534	}	660	}
535	}	661	}
536		662
		663	void noinline
		664	ev_feed_signal_event (EV_P_ int signum)
		665	{
		666	WL w;
		667
		668	#if EV_MULTIPLICITY
		669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		670	#endif
		671
		672	--signum;
		673
		674	if (signum < 0 || signum >= signalmax)
		675	return;
		676
		677	signals [signum].gotsig = 0;
		678
		679	for (w = signals [signum].head; w; w = w->next)
		680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		681	}
		682
537	static void	683	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
539	{	685	{
540	WL w;
541	int signum;	686	int signum;
542		687
543	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	689	gotsig = 0;
545		690
546	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
548	{	693	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;
550
551	for (w = signals [signum].head; w; w = w->next)
552	event (EV_A_ (W)w, EV_SIGNAL);
553	}
554	}	694	}
555		695
556	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
557	siginit (EV_P)	709	siginit (EV_P)
558	{	710	{
559	#ifndef WIN32	711	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		713
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	717	}
572		718
573	/*****************************************************************************/	719	/*****************************************************************************/
574		720
		721	static ev_child *childs [EV_PID_HASHSIZE];
		722
575	#ifndef WIN32	723	#ifndef _WIN32
576		724
577	static struct ev_child *childs [PID_HASHSIZE];
578	static struct ev_signal childev;	725	static ev_signal childev;
579		726
580	#ifndef WCONTINUED	727	void inline_speed
581	# define WCONTINUED 0
582	#endif
583
584	static void
585	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)
586	{	729	{
587	struct ev_child *w;	730	ev_child *w;
588		731
589	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)
590	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
591	{	734	{
592	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
593	w->rpid = pid;	736	w->rpid = pid;
594	w->rstatus = status;	737	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
596	}	739	}
597	}	740	}
598		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
599	static void	746	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
601	{	748	{
602	int pid, status;	749	int pid, status;
603		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
604	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
605	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
606	/* 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 */
607	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		761
609	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
610	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 */
611	}
612	}	765	}
613		766
614	#endif	767	#endif
615		768
616	/*****************************************************************************/	769	/*****************************************************************************/
617		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
618	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
619	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
620	#endif	776	#endif
621	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
622	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
639	{	795	{
640	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
641	}	797	}
642		798
643	/* 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 */
644	static int	800	int inline_size
645	enable_secure (void)	801	enable_secure (void)
646	{	802	{
647	#ifdef WIN32	803	#ifdef _WIN32
648	return 0;	804	return 0;
649	#else	805	#else
650	return getuid () != geteuid ()	806	return getuid () != geteuid ()
651	|| getgid () != getegid ();	807	|| getgid () != getegid ();
652	#endif	808	#endif
653	}	809	}
654		810
655	int	811	unsigned int
656	ev_method (EV_P)	812	ev_supported_backends (void)
657	{	813	{
658	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;
659	}	855	}
660		856
661	static void	857	static void
662	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
663	{	859	{
664	if (!method)	860	if (!backend)
665	{	861	{
666	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
667	{	863	{
668	struct timespec ts;	864	struct timespec ts;
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	866	have_monotonic = 1;
671	}	867	}
672	#endif	868	#endif
673		869
674	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	871	mn_now = get_clock ();
676	now_floor = mn_now;	872	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
678		874
679	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
680	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else
683	methods = EVMETHOD_ANY;
684		879
685	method = 0;	880	if (!(flags & 0x0000ffffUL))
686	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
687	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);
688	#endif	886	#endif
689	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
691	#endif	889	#endif
692	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
694	#endif	892	#endif
695	#if EV_USE_POLL	893	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
697	#endif	895	#endif
698	#if EV_USE_SELECT	896	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
700	#endif	898	#endif
701		899
702	ev_watcher_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
704	}	902	}
705	}	903	}
706		904
707	void	905	static void
708	loop_destroy (EV_P)	906	loop_destroy (EV_P)
709	{	907	{
710	int i;	908	int i;
711		909
712	#if EV_USE_WIN32	910	#if EV_USE_PORT
713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
714	#endif	912	#endif
715	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
717	#endif	915	#endif
718	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
720	#endif	918	#endif
721	#if EV_USE_POLL	919	#if EV_USE_POLL
722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
723	#endif	921	#endif
724	#if EV_USE_SELECT	922	#if EV_USE_SELECT
725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
726	#endif	924	#endif
727		925
728	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
729	array_free (pending, [i]);	927	array_free (pending, [i]);
730		928
		929	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	930	array_free (fdchange, EMPTY0);
732	array_free (timer, );	931	array_free (timer, EMPTY0);
		932	#if EV_PERIODIC_ENABLE
733	array_free (periodic, );	933	array_free (periodic, EMPTY0);
		934	#endif
734	array_free (idle, );	935	array_free (idle, EMPTY0);
735	array_free (prepare, );	936	array_free (prepare, EMPTY0);
736	array_free (check, );	937	array_free (check, EMPTY0);
737		938
738	method = 0;	939	backend = 0;
739	}	940	}
740		941
741	static void	942	static void
742	loop_fork (EV_P)	943	loop_fork (EV_P)
743	{	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
744	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
746	#endif
747	#if EV_USE_KQUEUE
748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
749	#endif	953	#endif
750		954
751	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
752	{	956	{
753	/* default loop */	957	/* default loop */
…		…
766	postfork = 0;	970	postfork = 0;
767	}	971	}
768		972
769	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
770	struct ev_loop *	974	struct ev_loop *
771	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
772	{	976	{
773	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));
774		978
775	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
776		980
777	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
778		982
779	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
780	return loop;	984	return loop;
781		985
782	return 0;	986	return 0;
783	}	987	}
784		988
…		…
796	}	1000	}
797		1001
798	#endif	1002	#endif
799		1003
800	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
805	#else	1007	#else
806	static int default_loop;
807
808	int	1008	int
		1009	ev_default_loop (unsigned int flags)
809	#endif	1010	#endif
810	ev_default_loop (int methods)
811	{	1011	{
812	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
814	return 0;	1014	return 0;
815		1015
816	if (!default_loop)	1016	if (!ev_default_loop_ptr)
817	{	1017	{
818	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	1020	#else
821	default_loop = 1;	1021	ev_default_loop_ptr = 1;
822	#endif	1022	#endif
823		1023
824	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
825		1025
826	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
827	{	1027	{
828	siginit (EV_A);	1028	siginit (EV_A);
829		1029
830	#ifndef WIN32	1030	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	1035	#endif
836	}	1036	}
837	else	1037	else
838	default_loop = 0;	1038	ev_default_loop_ptr = 0;
839	}	1039	}
840		1040
841	return default_loop;	1041	return ev_default_loop_ptr;
842	}	1042	}
843		1043
844	void	1044	void
845	ev_default_destroy (void)	1045	ev_default_destroy (void)
846	{	1046	{
847	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1049	#endif
850		1050
		1051	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
		1054	#endif
853		1055
854	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	1057	ev_io_stop (EV_A_ &sigev);
856		1058
857	close (sigpipe [0]); sigpipe [0] = 0;	1059	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		1064
863	void	1065	void
864	ev_default_fork (void)	1066	ev_default_fork (void)
865	{	1067	{
866	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	1070	#endif
869		1071
870	if (method)	1072	if (backend)
871	postfork = 1;	1073	postfork = 1;
872	}	1074	}
873		1075
874	/*****************************************************************************/	1076	/*****************************************************************************/
875		1077
876	static void	1078	int inline_size
		1079	any_pending (EV_P)
		1080	{
		1081	int pri;
		1082
		1083	for (pri = NUMPRI; pri--; )
		1084	if (pendingcnt [pri])
		1085	return 1;
		1086
		1087	return 0;
		1088	}
		1089
		1090	void inline_speed
877	call_pending (EV_P)	1091	call_pending (EV_P)
878	{	1092	{
879	int pri;	1093	int pri;
880		1094
881	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
882	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
883	{	1097	{
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		1099
886	if (p->w)	1100	if (expect_true (p->w))
887	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
888	p->w->pending = 0;	1104	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
890	}	1106	}
891	}	1107	}
892	}	1108	}
893		1109
894	static void	1110	void inline_size
895	timers_reify (EV_P)	1111	timers_reify (EV_P)
896	{	1112	{
897	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
898	{	1114	{
899	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
900		1116
901	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
902		1118
903	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
904	if (w->repeat)	1120	if (w->repeat)
905	{	1121	{
906	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
907	((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
908	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
909	}	1129	}
910	else	1130	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1132
913	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1134	}
915	}	1135	}
916		1136
917	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
918	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
919	{	1140	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1142	{
922	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
923		1144
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
925		1146
926	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
927	if (w->interval)	1148	if (w->reschedule_cb)
928	{	1149	{
		1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1152	downheap ((WT *)periodics, periodiccnt, 0);
		1153	}
		1154	else if (w->interval)
		1155	{
929	((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;
930	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));
931	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1159	}
933	else	1160	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1162
936	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1164	}
938	}	1165	}
939		1166
940	static void	1167	static void noinline
941	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
942	{	1169	{
943	int i;	1170	int i;
944		1171
945	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
947	{	1174	{
948	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
949		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1179	else if (w->interval)
951	{
952	ev_tstamp diff = 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;
953
954	if (fabs (diff) >= 1e-4)
955	{
956	ev_periodic_stop (EV_A_ w);
957	ev_periodic_start (EV_A_ w);
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}
961	}
962	}	1181	}
963	}
964		1182
965	inline int	1183	/* now rebuild the heap */
		1184	for (i = periodiccnt >> 1; i--; )
		1185	downheap ((WT *)periodics, periodiccnt, i);
		1186	}
		1187	#endif
		1188
		1189	int inline_size
966	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
967	{	1191	{
968	mn_now = get_clock ();	1192	mn_now = get_clock ();
969		1193
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1195	{
972	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1197	return 0;
974	}	1198	}
975	else	1199	else
976	{	1200	{
977	now_floor = mn_now;	1201	now_floor = mn_now;
978	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
979	return 1;	1203	return 1;
980	}	1204	}
981	}	1205	}
982		1206
983	static void	1207	void inline_size
984	time_update (EV_P)	1208	time_update (EV_P)
985	{	1209	{
986	int i;	1210	int i;
987		1211
988	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
990	{	1214	{
991	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
992	{	1216	{
993	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
994		1218
995	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; )
996	{	1228	{
997	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
998		1230
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1232	return; /* all is well */
1001		1233
1002	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1235	mn_now = get_clock ();
1004	now_floor = mn_now;	1236	now_floor = mn_now;
1005	}	1237	}
1006		1238
		1239	# if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1244	}
1011	}	1245	}
1012	else	1246	else
1013	#endif	1247	#endif
1014	{	1248	{
1015	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1016		1250
1017	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))
1018	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1019	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1020		1256
1021	/* 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 */
1022	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1260	}
1025		1261
1026	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1027	}	1263	}
1028	}	1264	}
1029		1265
1030	void	1266	void
1031	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1042	static int loop_done;	1278	static int loop_done;
1043		1279
1044	void	1280	void
1045	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1046	{	1282	{
1047	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1049		1286
1050	do	1287	while (activecnt)
1051	{	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
1052	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1054	{	1301	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1056	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1062		1309
1063	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1311	fd_reify (EV_A);
1065		1312
1066	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1067		1316
1068	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1069	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 */
1070	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1073	else	1325	else
1074	#endif	1326	#endif
1075	{	1327	{
1076	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1078	}	1330	}
1079		1331
1080	if (flags & EVLOOP_NONBLOCK || idlecnt)
1081	block = 0.;
1082	else
1083	{
1084	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1085		1333
1086	if (timercnt)	1334	if (timercnt)
1087	{	1335	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1089	if (block > to) block = to;	1337	if (block > to) block = to;
1090	}	1338	}
1091		1339
		1340	#if EV_PERIODIC_ENABLE
1092	if (periodiccnt)	1341	if (periodiccnt)
1093	{	1342	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1095	if (block > to) block = to;	1344	if (block > to) block = to;
1096	}	1345	}
		1346	#endif
1097		1347
1098	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1099	}	1349	}
1100		1350
1101	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1102		1353
1103	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1355	time_update (EV_A);
1105		1356
1106	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1108	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1109		1362
1110	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1111	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1113		1366
1114	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1368	if (expect_false (checkcnt))
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1370
1118	call_pending (EV_A);	1371	call_pending (EV_A);
1119	}
1120	while (activecnt && !loop_done);
1121		1372
1122	if (loop_done != 2)	1373	if (expect_false (loop_done))
1123	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1124	}	1379	}
1125		1380
1126	void	1381	void
1127	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1128	{	1383	{
1129	loop_done = how;	1384	loop_done = how;
1130	}	1385	}
1131		1386
1132	/*****************************************************************************/	1387	/*****************************************************************************/
1133		1388
1134	inline void	1389	void inline_size
1135	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1136	{	1391	{
1137	elem->next = *head;	1392	elem->next = *head;
1138	*head = elem;	1393	*head = elem;
1139	}	1394	}
1140		1395
1141	inline void	1396	void inline_size
1142	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1143	{	1398	{
1144	while (*head)	1399	while (*head)
1145	{	1400	{
1146	if (*head == elem)	1401	if (*head == elem)
…		…
1151		1406
1152	head = &(*head)->next;	1407	head = &(*head)->next;
1153	}	1408	}
1154	}	1409	}
1155		1410
1156	inline void	1411	void inline_speed
1157	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1158	{	1413	{
1159	if (w->pending)	1414	if (w->pending)
1160	{	1415	{
1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1162	w->pending = 0;	1417	w->pending = 0;
1163	}	1418	}
1164	}	1419	}
1165		1420
1166	inline void	1421	void inline_speed
1167	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1168	{	1423	{
1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1171		1426
1172	w->active = active;	1427	w->active = active;
1173	ev_ref (EV_A);	1428	ev_ref (EV_A);
1174	}	1429	}
1175		1430
1176	inline void	1431	void inline_size
1177	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1178	{	1433	{
1179	ev_unref (EV_A);	1434	ev_unref (EV_A);
1180	w->active = 0;	1435	w->active = 0;
1181	}	1436	}
1182		1437
1183	/*****************************************************************************/	1438	/*****************************************************************************/
1184		1439
1185	void	1440	void
1186	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1187	{	1442	{
1188	int fd = w->fd;	1443	int fd = w->fd;
1189		1444
1190	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1191	return;	1446	return;
1192		1447
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1449
1195	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1453
1199	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1200	}	1455	}
1201		1456
1202	void	1457	void
1203	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1204	{	1459	{
1205	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1207	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1208		1465
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1211		1468
1212	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1213	}	1470	}
1214		1471
1215	void	1472	void
1216	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1217	{	1474	{
1218	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1219	return;	1476	return;
1220		1477
1221	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1222		1479
1223	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.));
1224		1481
1225	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1229		1486
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}	1488	}
1232		1489
1233	void	1490	void
1234	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1235	{	1492	{
1236	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1237	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1238	return;	1495	return;
1239		1496
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1241		1498
1242	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1243	{	1500	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1503	}
1247		1504
1248	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1249		1506
1250	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1251	}	1508	}
1252		1509
1253	void	1510	void
1254	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1255	{	1512	{
1256	if (ev_is_active (w))	1513	if (ev_is_active (w))
1257	{	1514	{
1258	if (w->repeat)	1515	if (w->repeat)
1259	{	1516	{
1260	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1519	}
1263	else	1520	else
1264	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1265	}	1522	}
1266	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1268	}	1528	}
1269		1529
		1530	#if EV_PERIODIC_ENABLE
1270	void	1531	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1272	{	1533	{
1273	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1274	return;	1535	return;
1275		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1276	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.));
1277
1278	/* 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 */
1279	if (w->interval)
1280	((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;
		1544	}
1281		1545
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1286		1550
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}	1552	}
1289		1553
1290	void	1554	void
1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1292	{	1556	{
1293	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1295	return;	1559	return;
1296		1560
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1298		1562
1299	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1300	{	1564	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1303	}	1567	}
1304		1568
1305	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1306	}	1570	}
1307		1571
1308	void	1572	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1310	{	1574	{
1311	if (ev_is_active (w))	1575	/* TODO: use adjustheap and recalculation */
1312	return;
1313
1314	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );
1316	idles [idlecnt - 1] = w;
1317	}
1318
1319	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)
1321	{
1322	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))
1324	return;
1325
1326	idles [((W)w)->active - 1] = idles [--idlecnt];
1327	ev_stop (EV_A_ (W)w);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1328	}	1578	}
1329		1579	#endif
1330	void
1331	ev_prepare_start (EV_P_ struct ev_prepare *w)
1332	{
1333	if (ev_is_active (w))
1334	return;
1335
1336	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );
1338	prepares [preparecnt - 1] = w;
1339	}
1340
1341	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1343	{
1344	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))
1346	return;
1347
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1349	ev_stop (EV_A_ (W)w);
1350	}
1351
1352	void
1353	ev_check_start (EV_P_ struct ev_check *w)
1354	{
1355	if (ev_is_active (w))
1356	return;
1357
1358	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );
1360	checks [checkcnt - 1] = w;
1361	}
1362
1363	void
1364	ev_check_stop (EV_P_ struct ev_check *w)
1365	{
1366	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))
1368	return;
1369
1370	checks [((W)w)->active - 1] = checks [--checkcnt];
1371	ev_stop (EV_A_ (W)w);
1372	}
1373		1580
1374	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1375	# define SA_RESTART 0	1582	# define SA_RESTART 0
1376	#endif	1583	#endif
1377		1584
1378	void	1585	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1380	{	1587	{
1381	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1382	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));
1383	#endif	1590	#endif
1384	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1385	return;	1592	return;
1386		1593
1387	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));
1388		1595
1389	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1599
1393	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1394	{	1601	{
1395	#if WIN32	1602	#if _WIN32
1396	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1397	#else	1604	#else
1398	struct sigaction sa;	1605	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1403	#endif	1610	#endif
1404	}	1611	}
1405	}	1612	}
1406		1613
1407	void	1614	void
1408	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1409	{	1616	{
1410	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1411	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1412	return;	1619	return;
1413		1620
1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1415	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1416		1623
1417	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1418	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1419	}	1626	}
1420		1627
1421	void	1628	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1423	{	1630	{
1424	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1425	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));
1426	#endif	1633	#endif
1427	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1428	return;	1635	return;
1429		1636
1430	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1432	}	1639	}
1433		1640
1434	void	1641	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1436	{	1643	{
1437	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1439	return;	1646	return;
1440		1647
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1443	}	1650	}
1444		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
1445	/*****************************************************************************/	1879	/*****************************************************************************/
1446		1880
1447	struct ev_once	1881	struct ev_once
1448	{	1882	{
1449	struct ev_io io;	1883	ev_io io;
1450	struct ev_timer to;	1884	ev_timer to;
1451	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1452	void *arg;	1886	void *arg;
1453	};	1887	};
1454		1888
1455	static void	1889	static void
…		…
1464		1898
1465	cb (revents, arg);	1899	cb (revents, arg);
1466	}	1900	}
1467		1901
1468	static void	1902	static void
1469	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1470	{	1904	{
1471	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);
1472	}	1906	}
1473		1907
1474	static void	1908	static void
1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1476	{	1910	{
1477	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);
1478	}	1912	}
1479		1913
1480	void	1914	void
1481	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)
1482	{	1916	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1484		1918
1485	if (!once)	1919	if (expect_false (!once))
		1920	{
1486	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1487	else	1922	return;
1488	{	1923	}
		1924
1489	once->cb = cb;	1925	once->cb = cb;
1490	once->arg = arg;	1926	once->arg = arg;
1491		1927
1492	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	1929	if (fd >= 0)
1494	{	1930	{
1495	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1497	}	1933	}
1498		1934
1499	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	1936	if (timeout >= 0.)
1501	{	1937	{
1502	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1504	}
1505	}	1940	}
1506	}	1941	}
1507		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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