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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.150 by root, Tue Nov 27 19:41:52 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)(void);	235	static void (*syserr_cb)(const char *msg);
159		236
160	void ev_set_syserr_cb (void (*cb)(void))	237	void
		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 (void)	244	syserr (const char *msg)
167	{	245	{
		246	if (!msg)
		247	msg = "(libev) system error";
		248
168	if (syserr_cb)	249	if (syserr_cb)
169	syserr_cb ();	250	syserr_cb (msg);
170	else	251	else
171	{	252	{
172	perror ("libev");	253	perror (msg);
173	abort ();	254	abort ();
174	}	255	}
175	}	256	}
176		257
177	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
178		259
		260	void
179	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
180	{	262	{
181	alloc = cb;	263	alloc = cb;
182	}	264	}
183		265
184	static void *	266	inline_speed void *
185	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
186	{	268	{
187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
188		270
189	if (!ptr && size)	271	if (!ptr && size)
190	{	272	{
191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
192	abort ();	274	abort ();
193	}	275	}
194		276
195	return ptr;	277	return ptr;
196	}	278	}
…		…
203	typedef struct	285	typedef struct
204	{	286	{
205	WL head;	287	WL head;
206	unsigned char events;	288	unsigned char events;
207	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
208	} ANFD;	293	} ANFD;
209		294
210	typedef struct	295	typedef struct
211	{	296	{
212	W w;	297	W w;
213	int events;	298	int events;
214	} ANPENDING;	299	} ANPENDING;
215		300
216	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
217		302
218	struct ev_loop	303	struct ev_loop
219	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	308	#include "ev_vars.h"
222	};
223	# undef VAR	309	#undef VAR
		310	};
224	# 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;
225		315
226	#else	316	#else
227		317
		318	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	320	#include "ev_vars.h"
230	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
231		324
232	#endif	325	#endif
233		326
234	/*****************************************************************************/	327	/*****************************************************************************/
235		328
236	inline ev_tstamp	329	ev_tstamp
237	ev_time (void)	330	ev_time (void)
238	{	331	{
239	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
240	struct timespec ts;	333	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
245	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
246	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
247	#endif	340	#endif
248	}	341	}
249		342
250	inline ev_tstamp	343	ev_tstamp inline_size
251	get_clock (void)	344	get_clock (void)
252	{	345	{
253	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
254	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
255	{	348	{
…		…
260	#endif	353	#endif
261		354
262	return ev_time ();	355	return ev_time ();
263	}	356	}
264		357
		358	#if EV_MULTIPLICITY
265	ev_tstamp	359	ev_tstamp
266	ev_now (EV_P)	360	ev_now (EV_P)
267	{	361	{
268	return rt_now;	362	return ev_rt_now;
269	}	363	}
		364	#endif
270		365
271	#define array_roundsize(base,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
272		367
273	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
275	{ \	370	{ \
276	int newcnt = cur; \	371	int newcnt = cur; \
277	do \	372	do \
278	{ \	373	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	375	} \
281	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
282	\	377	\
283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	378	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
284	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	380	cur = newcnt; \
286	}	381	}
287		382
288	#define array_slim(stem) \	383	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	385	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294	}	389	}
295		390
296	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
297	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;
298		393
299	/*****************************************************************************/	394	/*****************************************************************************/
300		395
301	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
302	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
303	{	426	{
304	while (count--)	427	while (count--)
305	{	428	{
306	base->head = 0;	429	base->head = 0;
…		…
309		432
310	++base;	433	++base;
311	}	434	}
312	}	435	}
313		436
314	static void	437	void inline_speed
315	event (EV_P_ W w, int events)
316	{
317	if (w->pending)
318	{
319	pendings [ABSPRI (w)][w->pending - 1].events |= events;
320	return;
321	}
322
323	w->pending = ++pendingcnt [ABSPRI (w)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
325	pendings [ABSPRI (w)][w->pending - 1].w = w;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;
327	}
328
329	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{
332	int i;
333
334	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);
336	}
337
338	static void
339	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
340	{	439	{
341	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	441	ev_io *w;
343		442
344	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)
345	{	444	{
346	int ev = w->events & events;	445	int ev = w->events & revents;
347		446
348	if (ev)	447	if (ev)
349	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
350	}	449	}
351	}	450	}
352		451
353	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
354		457
355	static void	458	void inline_size
356	fd_reify (EV_P)	459	fd_reify (EV_P)
357	{	460	{
358	int i;	461	int i;
359		462
360	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
361	{	464	{
362	int fd = fdchanges [i];	465	int fd = fdchanges [i];
363	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	467	ev_io *w;
365		468
366	int events = 0;	469	int events = 0;
367		470
368	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)
369	events |= w->events;	472	events |= w->events;
370		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
371	anfd->reify = 0;	483	anfd->reify = 0;
372		484
373	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	486	anfd->events = events;
375	}	487	}
376		488
377	fdchangecnt = 0;	489	fdchangecnt = 0;
378	}	490	}
379		491
380	static void	492	void inline_size
381	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
382	{	494	{
383	if (anfds [fd].reify || fdchangecnt < 0)	495	if (expect_false (anfds [fd].reify))
384	return;	496	return;
385		497
386	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
387		499
388	++fdchangecnt;	500	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
391	}	503	}
392		504
393	static void	505	void inline_speed
394	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
395	{	507	{
396	struct ev_io *w;	508	ev_io *w;
397		509
398	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
399	{	511	{
400	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
401	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);
402	}	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
403	}	525	}
404		526
405	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
406	static void	528	static void noinline
407	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
408	{	530	{
409	int fd;	531	int fd;
410		532
411	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	534	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
415	}	537	}
416		538
417	/* 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 */
418	static void	540	static void noinline
419	fd_enomem (EV_P)	541	fd_enomem (EV_P)
420	{	542	{
421	int fd;	543	int fd;
422		544
423	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
426	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
427	return;	549	return;
428	}	550	}
429	}	551	}
430		552
431	/* susually 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 */
432	static void	554	static void noinline
433	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
434	{	556	{
435	int fd;	557	int fd;
436		558
437	/* 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 */
…		…
443	}	565	}
444	}	566	}
445		567
446	/*****************************************************************************/	568	/*****************************************************************************/
447		569
448	static void	570	void inline_speed
449	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
450	{	572	{
451	WT w = heap [k];	573	WT w = heap [k];
452		574
453	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
460	heap [k] = w;	582	heap [k] = w;
461	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
462		584
463	}	585	}
464		586
465	static void	587	void inline_speed
466	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
467	{	589	{
468	WT w = heap [k];	590	WT w = heap [k];
469		591
470	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
484		606
485	heap [k] = w;	607	heap [k] = w;
486	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
487	}	609	}
488		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
489	/*****************************************************************************/	618	/*****************************************************************************/
490		619
491	typedef struct	620	typedef struct
492	{	621	{
493	WL head;	622	WL head;
…		…
497	static ANSIG *signals;	626	static ANSIG *signals;
498	static int signalmax;	627	static int signalmax;
499		628
500	static int sigpipe [2];	629	static int sigpipe [2];
501	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
502	static struct ev_io sigev;	631	static ev_io sigev;
503		632
504	static void	633	void inline_size
505	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
506	{	635	{
507	while (count--)	636	while (count--)
508	{	637	{
509	base->head = 0;	638	base->head = 0;
…		…
514	}	643	}
515		644
516	static void	645	static void
517	sighandler (int signum)	646	sighandler (int signum)
518	{	647	{
519	#if WIN32	648	#if _WIN32
520	signal (signum, sighandler);	649	signal (signum, sighandler);
521	#endif	650	#endif
522		651
523	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
524		653
…		…
529	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	659	errno = old_errno;
531	}	660	}
532	}	661	}
533		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
534	static void	683	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
536	{	685	{
537	WL w;
538	int signum;	686	int signum;
539		687
540	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	689	gotsig = 0;
542		690
543	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
545	{	693	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;
547
548	for (w = signals [signum].head; w; w = w->next)
549	event (EV_A_ (W)w, EV_SIGNAL);
550	}
551	}	694	}
552		695
553	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
554	siginit (EV_P)	709	siginit (EV_P)
555	{	710	{
556	#ifndef WIN32	711	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		713
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	717	}
569		718
570	/*****************************************************************************/	719	/*****************************************************************************/
571		720
		721	static ev_child *childs [EV_PID_HASHSIZE];
		722
572	#ifndef WIN32	723	#ifndef _WIN32
573		724
574	static struct ev_child *childs [PID_HASHSIZE];
575	static struct ev_signal childev;	725	static ev_signal childev;
576		726
577	#ifndef WCONTINUED	727	void inline_speed
578	# define WCONTINUED 0
579	#endif
580
581	static void
582	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)
583	{	729	{
584	struct ev_child *w;	730	ev_child *w;
585		731
586	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)
587	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
588	{	734	{
589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
590	w->rpid = pid;	736	w->rpid = pid;
591	w->rstatus = status;	737	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	739	}
594	}	740	}
595		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
596	static void	746	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
598	{	748	{
599	int pid, status;	749	int pid, status;
600		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
603	/* 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 */
604	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		761
606	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
607	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 */
608	}
609	}	765	}
610		766
611	#endif	767	#endif
612		768
613	/*****************************************************************************/	769	/*****************************************************************************/
614		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
615	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
617	#endif	776	#endif
618	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
636	{	795	{
637	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
638	}	797	}
639		798
640	/* 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 */
641	static int	800	int inline_size
642	enable_secure (void)	801	enable_secure (void)
643	{	802	{
644	#ifdef WIN32	803	#ifdef _WIN32
645	return 0;	804	return 0;
646	#else	805	#else
647	return getuid () != geteuid ()	806	return getuid () != geteuid ()
648	|| getgid () != getegid ();	807	|| getgid () != getegid ();
649	#endif	808	#endif
650	}	809	}
651		810
652	int	811	unsigned int
653	ev_method (EV_P)	812	ev_supported_backends (void)
654	{	813	{
655	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;
656	}	855	}
657		856
658	static void	857	static void
659	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
660	{	859	{
661	if (!method)	860	if (!backend)
662	{	861	{
663	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
664	{	863	{
665	struct timespec ts;	864	struct timespec ts;
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	866	have_monotonic = 1;
668	}	867	}
669	#endif	868	#endif
670		869
671	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	871	mn_now = get_clock ();
673	now_floor = mn_now;	872	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
675		874
676	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else
680	methods = EVMETHOD_ANY;
681		879
682	method = 0;	880	if (!(flags & 0x0000ffffUL))
683	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
684	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);
685	#endif	886	#endif
686	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688	#endif	889	#endif
689	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691	#endif	892	#endif
692	#if EV_USE_POLL	893	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694	#endif	895	#endif
695	#if EV_USE_SELECT	896	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697	#endif	898	#endif
698	}
699	}
700		899
701	void	900	ev_init (&sigev, sigcb);
		901	ev_set_priority (&sigev, EV_MAXPRI);
		902	}
		903	}
		904
		905	static void
702	loop_destroy (EV_P)	906	loop_destroy (EV_P)
703	{	907	{
704	int i;	908	int i;
705		909
706	#if EV_USE_WIN32	910	#if EV_USE_PORT
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
708	#endif	912	#endif
709	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711	#endif	915	#endif
712	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714	#endif	918	#endif
715	#if EV_USE_POLL	919	#if EV_USE_POLL
716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717	#endif	921	#endif
718	#if EV_USE_SELECT	922	#if EV_USE_SELECT
719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720	#endif	924	#endif
721		925
722	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	927	array_free (pending, [i]);
724		928
		929	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	930	array_free (fdchange, EMPTY0);
726	array_free (timer, );	931	array_free (timer, EMPTY0);
		932	#if EV_PERIODIC_ENABLE
727	array_free (periodic, );	933	array_free (periodic, EMPTY0);
		934	#endif
728	array_free (idle, );	935	array_free (idle, EMPTY0);
729	array_free (prepare, );	936	array_free (prepare, EMPTY0);
730	array_free (check, );	937	array_free (check, EMPTY0);
731		938
732	method = 0;	939	backend = 0;
733	/*TODO*/
734	}	940	}
735		941
736	void	942	static void
737	loop_fork (EV_P)	943	loop_fork (EV_P)
738	{	944	{
739	/*TODO*/	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
740	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742	#endif	953	#endif
743	#if EV_USE_KQUEUE	954
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	955	if (ev_is_active (&sigev))
745	#endif	956	{
		957	/* default loop */
		958
		959	ev_ref (EV_A);
		960	ev_io_stop (EV_A_ &sigev);
		961	close (sigpipe [0]);
		962	close (sigpipe [1]);
		963
		964	while (pipe (sigpipe))
		965	syserr ("(libev) error creating pipe");
		966
		967	siginit (EV_A);
		968	}
		969
		970	postfork = 0;
746	}	971	}
747		972
748	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
749	struct ev_loop *	974	struct ev_loop *
750	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
751	{	976	{
752	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));
753		978
754	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
755		980
756	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
757		982
758	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
759	return loop;	984	return loop;
760		985
761	return 0;	986	return 0;
762	}	987	}
763		988
…		…
769	}	994	}
770		995
771	void	996	void
772	ev_loop_fork (EV_P)	997	ev_loop_fork (EV_P)
773	{	998	{
774	loop_fork (EV_A);	999	postfork = 1;
775	}	1000	}
776		1001
777	#endif	1002	#endif
778		1003
779	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
784	#else	1007	#else
785	static int default_loop;
786
787	int	1008	int
		1009	ev_default_loop (unsigned int flags)
788	#endif	1010	#endif
789	ev_default_loop (int methods)
790	{	1011	{
791	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
793	return 0;	1014	return 0;
794		1015
795	if (!default_loop)	1016	if (!ev_default_loop_ptr)
796	{	1017	{
797	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	1020	#else
800	default_loop = 1;	1021	ev_default_loop_ptr = 1;
801	#endif	1022	#endif
802		1023
803	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
804		1025
805	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
806	{	1027	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	1028	siginit (EV_A);
810		1029
811	#ifndef WIN32	1030	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	1035	#endif
817	}	1036	}
818	else	1037	else
819	default_loop = 0;	1038	ev_default_loop_ptr = 0;
820	}	1039	}
821		1040
822	return default_loop;	1041	return ev_default_loop_ptr;
823	}	1042	}
824		1043
825	void	1044	void
826	ev_default_destroy (void)	1045	ev_default_destroy (void)
827	{	1046	{
828	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	1049	#endif
831		1050
		1051	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
		1054	#endif
834		1055
835	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	1057	ev_io_stop (EV_A_ &sigev);
837		1058
838	close (sigpipe [0]); sigpipe [0] = 0;	1059	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		1064
844	void	1065	void
845	ev_default_fork (void)	1066	ev_default_fork (void)
846	{	1067	{
847	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1070	#endif
850		1071
851	loop_fork (EV_A);	1072	if (backend)
852		1073	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	1074	}
861		1075
862	/*****************************************************************************/	1076	/*****************************************************************************/
863		1077
864	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
865	call_pending (EV_P)	1091	call_pending (EV_P)
866	{	1092	{
867	int pri;	1093	int pri;
868		1094
869	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
871	{	1097	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1099
874	if (p->w)	1100	if (expect_true (p->w))
875	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
876	p->w->pending = 0;	1104	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
878	}	1106	}
879	}	1107	}
880	}	1108	}
881		1109
882	static void	1110	void inline_size
883	timers_reify (EV_P)	1111	timers_reify (EV_P)
884	{	1112	{
885	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
886	{	1114	{
887	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
888		1116
889	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
890		1118
891	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
892	if (w->repeat)	1120	if (w->repeat)
893	{	1121	{
894	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
895	((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
896	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
897	}	1129	}
898	else	1130	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1132
901	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1134	}
903	}	1135	}
904		1136
905	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
906	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
907	{	1140	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1142	{
910	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
911		1144
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1146
914	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
915	if (w->interval)	1148	if (w->reschedule_cb)
916	{	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	{
917	((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;
918	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));
919	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1159	}
921	else	1160	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1162
924	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1164	}
926	}	1165	}
927		1166
928	static void	1167	static void noinline
929	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
930	{	1169	{
931	int i;	1170	int i;
932		1171
933	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
935	{	1174	{
936	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
937		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1179	else if (w->interval)
939	{
940	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;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1181	}
951	}
952		1182
953	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
954	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
955	{	1191	{
956	mn_now = get_clock ();	1192	mn_now = get_clock ();
957		1193
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1195	{
960	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1197	return 0;
962	}	1198	}
963	else	1199	else
964	{	1200	{
965	now_floor = mn_now;	1201	now_floor = mn_now;
966	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
967	return 1;	1203	return 1;
968	}	1204	}
969	}	1205	}
970		1206
971	static void	1207	void inline_size
972	time_update (EV_P)	1208	time_update (EV_P)
973	{	1209	{
974	int i;	1210	int i;
975		1211
976	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
978	{	1214	{
979	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
980	{	1216	{
981	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
982		1218
983	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; )
984	{	1228	{
985	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
986		1230
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1232	return; /* all is well */
989		1233
990	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1235	mn_now = get_clock ();
992	now_floor = mn_now;	1236	now_floor = mn_now;
993	}	1237	}
994		1238
		1239	# if EV_PERIODIC_ENABLE
995	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1244	}
999	}	1245	}
1000	else	1246	else
1001	#endif	1247	#endif
1002	{	1248	{
1003	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1004		1250
1005	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))
1006	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1008		1256
1009	/* 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 */
1010	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1260	}
1013		1261
1014	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1015	}	1263	}
1016	}	1264	}
1017		1265
1018	void	1266	void
1019	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1030	static int loop_done;	1278	static int loop_done;
1031		1279
1032	void	1280	void
1033	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1034	{	1282	{
1035	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1037		1286
1038	do	1287	while (activecnt)
1039	{	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
1040	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1042	{	1301	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1303	call_pending (EV_A);
1045	}	1304	}
1046		1305
		1306	/* we might have forked, so reify kernel state if necessary */
		1307	if (expect_false (postfork))
		1308	loop_fork (EV_A);
		1309
1047	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1311	fd_reify (EV_A);
1049		1312
1050	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1051		1316
1052	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1053	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 */
1054	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1057	else	1325	else
1058	#endif	1326	#endif
1059	{	1327	{
1060	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1062	}	1330	}
1063		1331
1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
1065	block = 0.;
1066	else
1067	{
1068	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1069		1333
1070	if (timercnt)	1334	if (timercnt)
1071	{	1335	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073	if (block > to) block = to;	1337	if (block > to) block = to;
1074	}	1338	}
1075		1339
		1340	#if EV_PERIODIC_ENABLE
1076	if (periodiccnt)	1341	if (periodiccnt)
1077	{	1342	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079	if (block > to) block = to;	1344	if (block > to) block = to;
1080	}	1345	}
		1346	#endif
1081		1347
1082	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1083	}	1349	}
1084		1350
1085	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1086		1353
1087	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1355	time_update (EV_A);
1089		1356
1090	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1092	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1093		1362
1094	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1095	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1366
1098	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1368	if (expect_false (checkcnt))
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1370
1102	call_pending (EV_A);	1371	call_pending (EV_A);
1103	}
1104	while (activecnt && !loop_done);
1105		1372
1106	if (loop_done != 2)	1373	if (expect_false (loop_done))
1107	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1108	}	1379	}
1109		1380
1110	void	1381	void
1111	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1112	{	1383	{
1113	loop_done = how;	1384	loop_done = how;
1114	}	1385	}
1115		1386
1116	/*****************************************************************************/	1387	/*****************************************************************************/
1117		1388
1118	inline void	1389	void inline_size
1119	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1120	{	1391	{
1121	elem->next = *head;	1392	elem->next = *head;
1122	*head = elem;	1393	*head = elem;
1123	}	1394	}
1124		1395
1125	inline void	1396	void inline_size
1126	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1127	{	1398	{
1128	while (*head)	1399	while (*head)
1129	{	1400	{
1130	if (*head == elem)	1401	if (*head == elem)
…		…
1135		1406
1136	head = &(*head)->next;	1407	head = &(*head)->next;
1137	}	1408	}
1138	}	1409	}
1139		1410
1140	inline void	1411	void inline_speed
1141	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1142	{	1413	{
1143	if (w->pending)	1414	if (w->pending)
1144	{	1415	{
1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146	w->pending = 0;	1417	w->pending = 0;
1147	}	1418	}
1148	}	1419	}
1149		1420
1150	inline void	1421	void inline_speed
1151	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1152	{	1423	{
1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155		1426
1156	w->active = active;	1427	w->active = active;
1157	ev_ref (EV_A);	1428	ev_ref (EV_A);
1158	}	1429	}
1159		1430
1160	inline void	1431	void inline_size
1161	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1162	{	1433	{
1163	ev_unref (EV_A);	1434	ev_unref (EV_A);
1164	w->active = 0;	1435	w->active = 0;
1165	}	1436	}
1166		1437
1167	/*****************************************************************************/	1438	/*****************************************************************************/
1168		1439
1169	void	1440	void
1170	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1171	{	1442	{
1172	int fd = w->fd;	1443	int fd = w->fd;
1173		1444
1174	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1175	return;	1446	return;
1176		1447
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1449
1179	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1453
1183	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1184	}	1455	}
1185		1456
1186	void	1457	void
1187	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1188	{	1459	{
1189	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1191	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192		1465
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1195		1468
1196	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1197	}	1470	}
1198		1471
1199	void	1472	void
1200	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1201	{	1474	{
1202	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1203	return;	1476	return;
1204		1477
1205	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1206		1479
1207	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.));
1208		1481
1209	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1213		1486
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1488	}
1216		1489
1217	void	1490	void
1218	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1219	{	1492	{
1220	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1221	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1222	return;	1495	return;
1223		1496
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1498
1226	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1227	{	1500	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1503	}
1231		1504
1232	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1233		1506
1234	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1235	}	1508	}
1236		1509
1237	void	1510	void
1238	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1239	{	1512	{
1240	if (ev_is_active (w))	1513	if (ev_is_active (w))
1241	{	1514	{
1242	if (w->repeat)	1515	if (w->repeat)
1243	{	1516	{
1244	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1519	}
1247	else	1520	else
1248	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1249	}	1522	}
1250	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1252	}	1528	}
1253		1529
		1530	#if EV_PERIODIC_ENABLE
1254	void	1531	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1256	{	1533	{
1257	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1258	return;	1535	return;
1259		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1260	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.));
1261
1262	/* 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 */
1263	if (w->interval)
1264	((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	}
1265		1545
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1270		1550
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1552	}
1273		1553
1274	void	1554	void
1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1276	{	1556	{
1277	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1279	return;	1559	return;
1280		1560
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1562
1283	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1284	{	1564	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1567	}
1288		1568
1289	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1290	}	1570	}
1291		1571
1292	void	1572	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1294	{	1574	{
1295	if (ev_is_active (w))	1575	/* TODO: use adjustheap and recalculation */
1296	return;
1297
1298	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );
1300	idles [idlecnt - 1] = w;
1301	}
1302
1303	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{
1306	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))
1308	return;
1309
1310	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1312	}	1578	}
1313		1579	#endif
1314	void
1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
1316	{
1317	if (ev_is_active (w))
1318	return;
1319
1320	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );
1322	prepares [preparecnt - 1] = w;
1323	}
1324
1325	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{
1328	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))
1330	return;
1331
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);
1334	}
1335
1336	void
1337	ev_check_start (EV_P_ struct ev_check *w)
1338	{
1339	if (ev_is_active (w))
1340	return;
1341
1342	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );
1344	checks [checkcnt - 1] = w;
1345	}
1346
1347	void
1348	ev_check_stop (EV_P_ struct ev_check *w)
1349	{
1350	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))
1352	return;
1353
1354	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);
1356	}
1357		1580
1358	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1359	# define SA_RESTART 0	1582	# define SA_RESTART 0
1360	#endif	1583	#endif
1361		1584
1362	void	1585	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1364	{	1587	{
1365	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1366	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));
1367	#endif	1590	#endif
1368	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1369	return;	1592	return;
1370		1593
1371	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));
1372		1595
1373	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1599
1377	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1378	{	1601	{
1379	#if WIN32	1602	#if _WIN32
1380	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1381	#else	1604	#else
1382	struct sigaction sa;	1605	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1387	#endif	1610	#endif
1388	}	1611	}
1389	}	1612	}
1390		1613
1391	void	1614	void
1392	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1393	{	1616	{
1394	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1395	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1396	return;	1619	return;
1397		1620
1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1400		1623
1401	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1402	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1403	}	1626	}
1404		1627
1405	void	1628	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1407	{	1630	{
1408	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1409	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));
1410	#endif	1633	#endif
1411	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1412	return;	1635	return;
1413		1636
1414	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416	}	1639	}
1417		1640
1418	void	1641	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1420	{	1643	{
1421	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1423	return;	1646	return;
1424		1647
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1427	}	1650	}
1428		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
1429	/*****************************************************************************/	1879	/*****************************************************************************/
1430		1880
1431	struct ev_once	1881	struct ev_once
1432	{	1882	{
1433	struct ev_io io;	1883	ev_io io;
1434	struct ev_timer to;	1884	ev_timer to;
1435	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1436	void *arg;	1886	void *arg;
1437	};	1887	};
1438		1888
1439	static void	1889	static void
…		…
1448		1898
1449	cb (revents, arg);	1899	cb (revents, arg);
1450	}	1900	}
1451		1901
1452	static void	1902	static void
1453	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1454	{	1904	{
1455	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);
1456	}	1906	}
1457		1907
1458	static void	1908	static void
1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1460	{	1910	{
1461	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);
1462	}	1912	}
1463		1913
1464	void	1914	void
1465	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)
1466	{	1916	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468		1918
1469	if (!once)	1919	if (expect_false (!once))
		1920	{
1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471	else	1922	return;
1472	{	1923	}
		1924
1473	once->cb = cb;	1925	once->cb = cb;
1474	once->arg = arg;	1926	once->arg = arg;
1475		1927
1476	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1929	if (fd >= 0)
1478	{	1930	{
1479	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1481	}	1933	}
1482		1934
1483	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1936	if (timeout >= 0.)
1485	{	1937	{
1486	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1488	}
1489	}	1940	}
1490	}	1941	}
1491		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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