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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
103	# else	164	# else
104	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
105	# endif	166	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif	167	#endif
111		168
112	/**/	169	/**/
113		170
114	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
122	#endif	179	#endif
123		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
124	/**/	185	/**/
125		186
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		190
131	#ifdef EV_H	191	#ifdef EV_H
132	# include EV_H	192	# include EV_H
133	#else	193	#else
134	# include "ev.h"	194	# include "ev.h"
135	#endif	195	#endif
136		196
137	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
138	# 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
139	# 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
140	#else	207	#else
141	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
142	# define inline static	210	# define inline_size static
		211	# define noinline
143	#endif	212	#endif
144		213
145	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
147		216
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
151	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
154		226
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		228
		229	#ifdef _WIN32
157	#include "ev_win32.c"	230	# include "ev_win32.c"
		231	#endif
158		232
159	/*****************************************************************************/	233	/*****************************************************************************/
160		234
161	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
162		236
		237	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	239	{
165	syserr_cb = cb;	240	syserr_cb = cb;
166	}	241	}
167		242
168	static void	243	static void noinline
169	syserr (const char *msg)	244	syserr (const char *msg)
170	{	245	{
171	if (!msg)	246	if (!msg)
172	msg = "(libev) system error";	247	msg = "(libev) system error";
173		248
…		…
178	perror (msg);	253	perror (msg);
179	abort ();	254	abort ();
180	}	255	}
181	}	256	}
182		257
183	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
184		259
		260	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
186	{	262	{
187	alloc = cb;	263	alloc = cb;
188	}	264	}
189		265
190	static void *	266	inline_speed void *
191	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
192	{	268	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
194		270
195	if (!ptr && size)	271	if (!ptr && size)
196	{	272	{
197	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
198	abort ();	274	abort ();
199	}	275	}
200		276
201	return ptr;	277	return ptr;
202	}	278	}
…		…
209	typedef struct	285	typedef struct
210	{	286	{
211	WL head;	287	WL head;
212	unsigned char events;	288	unsigned char events;
213	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
214	} ANFD;	293	} ANFD;
215		294
216	typedef struct	295	typedef struct
217	{	296	{
218	W w;	297	W w;
…		…
221		300
222	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
223		302
224	struct ev_loop	303	struct ev_loop
225	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	308	#include "ev_vars.h"
228	#undef VAR	309	#undef VAR
229	};	310	};
230	#include "ev_wrap.h"	311	#include "ev_wrap.h"
231		312
232	struct ev_loop default_loop_struct;	313	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	314	struct ev_loop *ev_default_loop_ptr;
234		315
235	#else	316	#else
236		317
		318	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	320	#include "ev_vars.h"
239	#undef VAR	321	#undef VAR
240		322
241	static int default_loop;	323	static int ev_default_loop_ptr;
242		324
243	#endif	325	#endif
244		326
245	/*****************************************************************************/	327	/*****************************************************************************/
246		328
247	inline ev_tstamp	329	ev_tstamp
248	ev_time (void)	330	ev_time (void)
249	{	331	{
250	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
251	struct timespec ts;	333	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	340	#endif
259	}	341	}
260		342
261	inline ev_tstamp	343	ev_tstamp inline_size
262	get_clock (void)	344	get_clock (void)
263	{	345	{
264	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
266	{	348	{
…		…
271	#endif	353	#endif
272		354
273	return ev_time ();	355	return ev_time ();
274	}	356	}
275		357
		358	#if EV_MULTIPLICITY
276	ev_tstamp	359	ev_tstamp
277	ev_now (EV_P)	360	ev_now (EV_P)
278	{	361	{
279	return rt_now;	362	return ev_rt_now;
280	}	363	}
		364	#endif
281		365
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		367
284	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
286	{ \	370	{ \
287	int newcnt = cur; \	371	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	389	}
306		390
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
313	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;
314		393
315	/*****************************************************************************/	394	/*****************************************************************************/
316		395
317	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
318	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
319	{	426	{
320	while (count--)	427	while (count--)
321	{	428	{
322	base->head = 0;	429	base->head = 0;
…		…
325		432
326	++base;	433	++base;
327	}	434	}
328	}	435	}
329		436
330	void	437	void inline_speed
331	ev_feed_event (EV_P_ void *w, int revents)
332	{
333	W w_ = (W)w;
334
335	if (w_->pending)
336	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338	return;
339	}
340
341	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}
346
347	static void
348	queue_events (EV_P_ W *events, int eventcnt, int type)
349	{
350	int i;
351
352	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);
354	}
355
356	inline void
357	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
358	{	439	{
359	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	441	ev_io *w;
361		442
362	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)
363	{	444	{
364	int ev = w->events & revents;	445	int ev = w->events & revents;
365		446
366	if (ev)	447	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	454	{
374	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
375	}	456	}
376		457
377	/*****************************************************************************/	458	void inline_size
378
379	static void
380	fd_reify (EV_P)	459	fd_reify (EV_P)
381	{	460	{
382	int i;	461	int i;
383		462
384	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
385	{	464	{
386	int fd = fdchanges [i];	465	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	467	ev_io *w;
389		468
390	int events = 0;	469	int events = 0;
391		470
392	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)
393	events |= w->events;	472	events |= w->events;
394		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
395	anfd->reify = 0;	483	anfd->reify = 0;
396		484
397	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	486	anfd->events = events;
399	}	487	}
400		488
401	fdchangecnt = 0;	489	fdchangecnt = 0;
402	}	490	}
403		491
404	static void	492	void inline_size
405	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
406	{	494	{
407	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
408	return;	496	return;
409		497
410	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
411		499
412	++fdchangecnt;	500	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
415	}	503	}
416		504
417	static void	505	void inline_speed
418	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
419	{	507	{
420	struct ev_io *w;	508	ev_io *w;
421		509
422	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
423	{	511	{
424	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426	}	514	}
427	}	515	}
428		516
429	static int	517	int inline_size
430	fd_valid (int fd)	518	fd_valid (int fd)
431	{	519	{
432	#ifdef WIN32	520	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
434	#else	522	#else
435	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
436	#endif	524	#endif
437	}	525	}
438		526
439	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
440	static void	528	static void noinline
441	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
442	{	530	{
443	int fd;	531	int fd;
444		532
445	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
449	}	537	}
450		538
451	/* 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 */
452	static void	540	static void noinline
453	fd_enomem (EV_P)	541	fd_enomem (EV_P)
454	{	542	{
455	int fd;	543	int fd;
456		544
457	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
461	return;	549	return;
462	}	550	}
463	}	551	}
464		552
465	/* 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 */
466	static void	554	static void noinline
467	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
468	{	556	{
469	int fd;	557	int fd;
470		558
471	/* 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 */
…		…
477	}	565	}
478	}	566	}
479		567
480	/*****************************************************************************/	568	/*****************************************************************************/
481		569
482	static void	570	void inline_speed
483	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
484	{	572	{
485	WT w = heap [k];	573	WT w = heap [k];
486		574
487	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	582	heap [k] = w;
495	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
496		584
497	}	585	}
498		586
499	static void	587	void inline_speed
500	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
501	{	589	{
502	WT w = heap [k];	590	WT w = heap [k];
503		591
504	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
518		606
519	heap [k] = w;	607	heap [k] = w;
520	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
521	}	609	}
522		610
523	inline void	611	void inline_size
524	adjustheap (WT *heap, int N, int k, ev_tstamp at)	612	adjustheap (WT *heap, int N, int k)
525	{	613	{
526	ev_tstamp old_at = heap [k]->at;	614	upheap (heap, k);
527	heap [k]->at = at;
528
529	if (old_at < at)
530	downheap (heap, N, k);	615	downheap (heap, N, k);
531	else
532	upheap (heap, k);
533	}	616	}
534		617
535	/*****************************************************************************/	618	/*****************************************************************************/
536		619
537	typedef struct	620	typedef struct
…		…
543	static ANSIG *signals;	626	static ANSIG *signals;
544	static int signalmax;	627	static int signalmax;
545		628
546	static int sigpipe [2];	629	static int sigpipe [2];
547	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
548	static struct ev_io sigev;	631	static ev_io sigev;
549		632
550	static void	633	void inline_size
551	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
552	{	635	{
553	while (count--)	636	while (count--)
554	{	637	{
555	base->head = 0;	638	base->head = 0;
…		…
560	}	643	}
561		644
562	static void	645	static void
563	sighandler (int signum)	646	sighandler (int signum)
564	{	647	{
565	#if WIN32	648	#if _WIN32
566	signal (signum, sighandler);	649	signal (signum, sighandler);
567	#endif	650	#endif
568		651
569	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
570		653
571	if (!gotsig)	654	if (!gotsig)
572	{	655	{
573	int old_errno = errno;	656	int old_errno = errno;
574	gotsig = 1;	657	gotsig = 1;
575	#ifdef WIN32
576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577	#else
578	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
579	#endif
580	errno = old_errno;	659	errno = old_errno;
581	}	660	}
582	}	661	}
583		662
584	void	663	void noinline
585	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
586	{	665	{
587	WL w;	666	WL w;
588		667
589	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591	#endif	670	#endif
592		671
593	--signum;	672	--signum;
594		673
595	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
600	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602	}	681	}
603		682
604	static void	683	static void
605	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
606	{	685	{
607	int signum;	686	int signum;
608		687
609	#ifdef WIN32
610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611	#else
612	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
613	#endif
614	gotsig = 0;	689	gotsig = 0;
615		690
616	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
617	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
618	ev_feed_signal_event (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
619	}	694	}
620		695
621	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
622	siginit (EV_P)	709	siginit (EV_P)
623	{	710	{
624	#ifndef WIN32	711	fd_intern (sigpipe [0]);
625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628	/* rather than sort out wether we really need nb, set it */
629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631	#endif
632		713
633	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
634	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
635	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
636	}	717	}
637		718
638	/*****************************************************************************/	719	/*****************************************************************************/
639		720
640	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
641		722
642	#ifndef WIN32	723	#ifndef _WIN32
643		724
644	static struct ev_signal childev;	725	static ev_signal childev;
645		726
646	#ifndef WCONTINUED	727	void inline_speed
647	# define WCONTINUED 0
648	#endif
649
650	static void
651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
652	{	729	{
653	struct ev_child *w;	730	ev_child *w;
654		731
655	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)
656	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
657	{	734	{
658	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659	w->rpid = pid;	736	w->rpid = pid;
660	w->rstatus = status;	737	w->rstatus = status;
661	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
662	}	739	}
663	}	740	}
664		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
665	static void	746	static void
666	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
667	{	748	{
668	int pid, status;	749	int pid, status;
669		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
672	/* 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 */
673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674		761
675	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
676	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 */
677	}
678	}	765	}
679		766
680	#endif	767	#endif
681		768
682	/*****************************************************************************/	769	/*****************************************************************************/
683		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
684	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
685	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
686	#endif	776	#endif
687	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
688	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
705	{	795	{
706	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
707	}	797	}
708		798
709	/* 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 */
710	static int	800	int inline_size
711	enable_secure (void)	801	enable_secure (void)
712	{	802	{
713	#ifdef WIN32	803	#ifdef _WIN32
714	return 0;	804	return 0;
715	#else	805	#else
716	return getuid () != geteuid ()	806	return getuid () != geteuid ()
717	|| getgid () != getegid ();	807	|| getgid () != getegid ();
718	#endif	808	#endif
719	}	809	}
720		810
721	int	811	unsigned int
722	ev_method (EV_P)	812	ev_supported_backends (void)
723	{	813	{
724	return method;	814	unsigned int flags = 0;
725	}
726		815
727	static void	816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728	loop_init (EV_P_ int methods)	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)
729	{	827	{
730	if (!method)	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;
		855	}
		856
		857	static void noinline
		858	loop_init (EV_P_ unsigned int flags)
		859	{
		860	if (!backend)
731	{	861	{
732	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
733	{	863	{
734	struct timespec ts;	864	struct timespec ts;
735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736	have_monotonic = 1;	866	have_monotonic = 1;
737	}	867	}
738	#endif	868	#endif
739		869
740	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
741	mn_now = get_clock ();	871	mn_now = get_clock ();
742	now_floor = mn_now;	872	now_floor = mn_now;
743	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
744		874
745	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
746	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
747	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
748	else
749	methods = EVMETHOD_ANY;
750		879
751	method = 0;	880	if (!(flags & 0x0000ffffUL))
752	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
753	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);
754	#endif	886	#endif
755	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757	#endif	889	#endif
758	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760	#endif	892	#endif
761	#if EV_USE_POLL	893	#if EV_USE_POLL
762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763	#endif	895	#endif
764	#if EV_USE_SELECT	896	#if EV_USE_SELECT
765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766	#endif	898	#endif
767		899
768	ev_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
769	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
770	}	902	}
771	}	903	}
772		904
773	void	905	static void noinline
774	loop_destroy (EV_P)	906	loop_destroy (EV_P)
775	{	907	{
776	int i;	908	int i;
777		909
778	#if EV_USE_WIN32	910	#if EV_USE_PORT
779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780	#endif	912	#endif
781	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783	#endif	915	#endif
784	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786	#endif	918	#endif
787	#if EV_USE_POLL	919	#if EV_USE_POLL
788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789	#endif	921	#endif
790	#if EV_USE_SELECT	922	#if EV_USE_SELECT
791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792	#endif	924	#endif
793		925
794	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
795	array_free (pending, [i]);	927	array_free (pending, [i]);
796		928
797	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
798	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
799	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
800	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
801	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
802	array_free_microshit (prepare);	934	#endif
803	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
804		938
805	method = 0;	939	backend = 0;
806	}	940	}
807		941
808	static void	942	void inline_size
809	loop_fork (EV_P)	943	loop_fork (EV_P)
810	{	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
811	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813	#endif
814	#if EV_USE_KQUEUE
815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
816	#endif	953	#endif
817		954
818	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
819	{	956	{
820	/* default loop */	957	/* default loop */
…		…
833	postfork = 0;	970	postfork = 0;
834	}	971	}
835		972
836	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
837	struct ev_loop *	974	struct ev_loop *
838	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
839	{	976	{
840	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));
841		978
842	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
843		980
844	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
845		982
846	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
847	return loop;	984	return loop;
848		985
849	return 0;	986	return 0;
850	}	987	}
851		988
…		…
864		1001
865	#endif	1002	#endif
866		1003
867	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
868	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
869	#else	1007	#else
870	int	1008	int
		1009	ev_default_loop (unsigned int flags)
871	#endif	1010	#endif
872	ev_default_loop (int methods)
873	{	1011	{
874	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
875	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
876	return 0;	1014	return 0;
877		1015
878	if (!default_loop)	1016	if (!ev_default_loop_ptr)
879	{	1017	{
880	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
881	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882	#else	1020	#else
883	default_loop = 1;	1021	ev_default_loop_ptr = 1;
884	#endif	1022	#endif
885		1023
886	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
887		1025
888	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
889	{	1027	{
890	siginit (EV_A);	1028	siginit (EV_A);
891		1029
892	#ifndef WIN32	1030	#ifndef _WIN32
893	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
894	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
895	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
897	#endif	1035	#endif
898	}	1036	}
899	else	1037	else
900	default_loop = 0;	1038	ev_default_loop_ptr = 0;
901	}	1039	}
902		1040
903	return default_loop;	1041	return ev_default_loop_ptr;
904	}	1042	}
905		1043
906	void	1044	void
907	ev_default_destroy (void)	1045	ev_default_destroy (void)
908	{	1046	{
909	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
910	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
911	#endif	1049	#endif
912		1050
913	#ifndef WIN32	1051	#ifndef _WIN32
914	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
915	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
916	#endif	1054	#endif
917		1055
918	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
926		1064
927	void	1065	void
928	ev_default_fork (void)	1066	ev_default_fork (void)
929	{	1067	{
930	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
931	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
932	#endif	1070	#endif
933		1071
934	if (method)	1072	if (backend)
935	postfork = 1;	1073	postfork = 1;
936	}	1074	}
937		1075
938	/*****************************************************************************/	1076	/*****************************************************************************/
939		1077
940	static int	1078	int inline_size
941	any_pending (EV_P)	1079	any_pending (EV_P)
942	{	1080	{
943	int pri;	1081	int pri;
944		1082
945	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
947	return 1;	1085	return 1;
948		1086
949	return 0;	1087	return 0;
950	}	1088	}
951		1089
952	static void	1090	void inline_speed
953	call_pending (EV_P)	1091	call_pending (EV_P)
954	{	1092	{
955	int pri;	1093	int pri;
956		1094
957	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
958	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
959	{	1097	{
960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961		1099
962	if (p->w)	1100	if (expect_true (p->w))
963	{	1101	{
		1102	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1103
964	p->w->pending = 0;	1104	p->w->pending = 0;
965	EV_CB_INVOKE (p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
966	}	1106	}
967	}	1107	}
968	}	1108	}
969		1109
970	static void	1110	void inline_size
971	timers_reify (EV_P)	1111	timers_reify (EV_P)
972	{	1112	{
973	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
974	{	1114	{
975	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
976		1116
977	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978		1118
979	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
980	if (w->repeat)	1120	if (w->repeat)
981	{	1121	{
982	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
983	((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
984	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
985	}	1129	}
986	else	1130	else
987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988		1132
989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990	}	1134	}
991	}	1135	}
992		1136
993	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
994	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
995	{	1140	{
996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997	{	1142	{
998	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
999		1144
1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001		1146
1002	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
1003	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
1004	{	1149	{
1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
1009	}	1153	}
1010	else if (w->interval)	1154	else if (w->interval)
1011	{	1155	{
1012	((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;
1013	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));
1014	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
1015	}	1159	}
1016	else	1160	else
1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1162
1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020	}	1164	}
1021	}	1165	}
1022		1166
1023	static void	1167	static void noinline
1024	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1025	{	1169	{
1026	int i;	1170	int i;
1027		1171
1028	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1029	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1030	{	1174	{
1031	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1032		1176
1033	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1034	((WT)w)->at = w->reschedule_cb (w, rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035	else if (w->interval)	1179	else if (w->interval)
1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037	}	1181	}
1038		1182
1039	/* now rebuild the heap */	1183	/* now rebuild the heap */
1040	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1041	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1042	}	1186	}
		1187	#endif
1043		1188
1044	inline int	1189	int inline_size
1045	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1046	{	1191	{
1047	mn_now = get_clock ();	1192	mn_now = get_clock ();
1048		1193
1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050	{	1195	{
1051	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
1052	return 0;	1197	return 0;
1053	}	1198	}
1054	else	1199	else
1055	{	1200	{
1056	now_floor = mn_now;	1201	now_floor = mn_now;
1057	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1058	return 1;	1203	return 1;
1059	}	1204	}
1060	}	1205	}
1061		1206
1062	static void	1207	void inline_size
1063	time_update (EV_P)	1208	time_update (EV_P)
1064	{	1209	{
1065	int i;	1210	int i;
1066		1211
1067	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1069	{	1214	{
1070	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1071	{	1216	{
1072	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1073		1218
1074	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; )
1075	{	1228	{
1076	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1077		1230
1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079	return; /* all is well */	1232	return; /* all is well */
1080		1233
1081	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1082	mn_now = get_clock ();	1235	mn_now = get_clock ();
1083	now_floor = mn_now;	1236	now_floor = mn_now;
1084	}	1237	}
1085		1238
		1239	# if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1087	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089	}	1244	}
1090	}	1245	}
1091	else	1246	else
1092	#endif	1247	#endif
1093	{	1248	{
1094	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1095		1250
1096	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))
1097	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1098	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1099		1256
1100	/* 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 */
1101	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1102	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1103	}	1260	}
1104		1261
1105	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1106	}	1263	}
1107	}	1264	}
1108		1265
1109	void	1266	void
1110	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1121	static int loop_done;	1278	static int loop_done;
1122		1279
1123	void	1280	void
1124	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1125	{	1282	{
1126	double block;
1127	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1128		1286
1129	do	1287	while (activecnt)
1130	{	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
1131	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1132	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1133	{	1301	{
1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1141		1309
1142	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1143	fd_reify (EV_A);	1311	fd_reify (EV_A);
1144		1312
1145	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1146		1316
1147	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	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 */
1149	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1150	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1151	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1152	else	1325	else
1153	#endif	1326	#endif
1154	{	1327	{
1155	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1156	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1157	}	1330	}
1158		1331
1159	if (flags & EVLOOP_NONBLOCK || idlecnt)
1160	block = 0.;
1161	else
1162	{
1163	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1164		1333
1165	if (timercnt)	1334	if (timercnt)
1166	{	1335	{
1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168	if (block > to) block = to;	1337	if (block > to) block = to;
1169	}	1338	}
1170		1339
		1340	#if EV_PERIODIC_ENABLE
1171	if (periodiccnt)	1341	if (periodiccnt)
1172	{	1342	{
1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174	if (block > to) block = to;	1344	if (block > to) block = to;
1175	}	1345	}
		1346	#endif
1176		1347
1177	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1178	}	1349	}
1179		1350
1180	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1181		1353
1182	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1183	time_update (EV_A);	1355	time_update (EV_A);
1184		1356
1185	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1186	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1187	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1188		1362
1189	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1190	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1192		1366
1193	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1194	if (checkcnt)	1368	if (expect_false (checkcnt))
1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196		1370
1197	call_pending (EV_A);	1371	call_pending (EV_A);
1198	}
1199	while (activecnt && !loop_done);
1200		1372
1201	if (loop_done != 2)	1373	if (expect_false (loop_done))
1202	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1203	}	1379	}
1204		1380
1205	void	1381	void
1206	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1207	{	1383	{
1208	loop_done = how;	1384	loop_done = how;
1209	}	1385	}
1210		1386
1211	/*****************************************************************************/	1387	/*****************************************************************************/
1212		1388
1213	inline void	1389	void inline_size
1214	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1215	{	1391	{
1216	elem->next = *head;	1392	elem->next = *head;
1217	*head = elem;	1393	*head = elem;
1218	}	1394	}
1219		1395
1220	inline void	1396	void inline_size
1221	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1222	{	1398	{
1223	while (*head)	1399	while (*head)
1224	{	1400	{
1225	if (*head == elem)	1401	if (*head == elem)
…		…
1230		1406
1231	head = &(*head)->next;	1407	head = &(*head)->next;
1232	}	1408	}
1233	}	1409	}
1234		1410
1235	inline void	1411	void inline_speed
1236	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1237	{	1413	{
1238	if (w->pending)	1414	if (w->pending)
1239	{	1415	{
1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241	w->pending = 0;	1417	w->pending = 0;
1242	}	1418	}
1243	}	1419	}
1244		1420
1245	inline void	1421	void inline_speed
1246	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1247	{	1423	{
1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250		1426
1251	w->active = active;	1427	w->active = active;
1252	ev_ref (EV_A);	1428	ev_ref (EV_A);
1253	}	1429	}
1254		1430
1255	inline void	1431	void inline_size
1256	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1257	{	1433	{
1258	ev_unref (EV_A);	1434	ev_unref (EV_A);
1259	w->active = 0;	1435	w->active = 0;
1260	}	1436	}
1261		1437
1262	/*****************************************************************************/	1438	/*****************************************************************************/
1263		1439
1264	void	1440	void
1265	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1266	{	1442	{
1267	int fd = w->fd;	1443	int fd = w->fd;
1268		1444
1269	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1270	return;	1446	return;
1271		1447
1272	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1273		1449
1274	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1277		1453
1278	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1279	}	1455	}
1280		1456
1281	void	1457	void
1282	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1283	{	1459	{
1284	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1285	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1286	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287		1465
1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1290		1468
1291	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1292	}	1470	}
1293		1471
1294	void	1472	void
1295	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1296	{	1474	{
1297	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1298	return;	1476	return;
1299		1477
1300	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1301		1479
1302	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.));
1303		1481
1304	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1306	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1307	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1308		1486
		1487	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1488	}
		1489
		1490	void
		1491	ev_timer_stop (EV_P_ ev_timer *w)
		1492	{
		1493	ev_clear_pending (EV_A_ (W)w);
		1494	if (expect_false (!ev_is_active (w)))
		1495	return;
		1496
1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310	}
1311		1498
1312	void	1499	{
1313	ev_timer_stop (EV_P_ struct ev_timer *w)	1500	int active = ((W)w)->active;
1314	{
1315	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))
1317	return;
1318		1501
1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1502	if (expect_true (--active < --timercnt))
1320
1321	if (((W)w)->active < timercnt--)
1322	{	1503	{
1323	timers [((W)w)->active - 1] = timers [timercnt];	1504	timers [active] = timers [timercnt];
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1505	adjustheap ((WT *)timers, timercnt, active);
1325	}	1506	}
		1507	}
1326		1508
1327	((WT)w)->at = w->repeat;	1509	((WT)w)->at -= mn_now;
1328		1510
1329	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1330	}	1512	}
1331		1513
1332	void	1514	void
1333	ev_timer_again (EV_P_ struct ev_timer *w)	1515	ev_timer_again (EV_P_ ev_timer *w)
1334	{	1516	{
1335	if (ev_is_active (w))	1517	if (ev_is_active (w))
1336	{	1518	{
1337	if (w->repeat)	1519	if (w->repeat)
		1520	{
		1521	((WT)w)->at = mn_now + w->repeat;
1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1522	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1523	}
1339	else	1524	else
1340	ev_timer_stop (EV_A_ w);	1525	ev_timer_stop (EV_A_ w);
1341	}	1526	}
1342	else if (w->repeat)	1527	else if (w->repeat)
		1528	{
		1529	w->at = w->repeat;
1343	ev_timer_start (EV_A_ w);	1530	ev_timer_start (EV_A_ w);
		1531	}
1344	}	1532	}
1345		1533
		1534	#if EV_PERIODIC_ENABLE
1346	void	1535	void
1347	ev_periodic_start (EV_P_ struct ev_periodic *w)	1536	ev_periodic_start (EV_P_ ev_periodic *w)
1348	{	1537	{
1349	if (ev_is_active (w))	1538	if (expect_false (ev_is_active (w)))
1350	return;	1539	return;
1351		1540
1352	if (w->reschedule_cb)	1541	if (w->reschedule_cb)
1353	((WT)w)->at = w->reschedule_cb (w, rt_now);	1542	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354	else if (w->interval)	1543	else if (w->interval)
1355	{	1544	{
1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1545	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357	/* this formula differs from the one in periodic_reify because we do not always round up */	1546	/* this formula differs from the one in periodic_reify because we do not always round up */
1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1547	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359	}	1548	}
1360		1549
1361	ev_start (EV_A_ (W)w, ++periodiccnt);	1550	ev_start (EV_A_ (W)w, ++periodiccnt);
1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1551	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363	periodics [periodiccnt - 1] = w;	1552	periodics [periodiccnt - 1] = w;
1364	upheap ((WT *)periodics, periodiccnt - 1);	1553	upheap ((WT *)periodics, periodiccnt - 1);
1365		1554
		1555	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1556	}
		1557
		1558	void
		1559	ev_periodic_stop (EV_P_ ev_periodic *w)
		1560	{
		1561	ev_clear_pending (EV_A_ (W)w);
		1562	if (expect_false (!ev_is_active (w)))
		1563	return;
		1564
1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1565	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367	}
1368		1566
1369	void	1567	{
1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1568	int active = ((W)w)->active;
1371	{
1372	ev_clear_pending (EV_A_ (W)w);
1373	if (!ev_is_active (w))
1374	return;
1375		1569
1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1570	if (expect_true (--active < --periodiccnt))
1377
1378	if (((W)w)->active < periodiccnt--)
1379	{	1571	{
1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1572	periodics [active] = periodics [periodiccnt];
1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1573	adjustheap ((WT *)periodics, periodiccnt, active);
1382	}	1574	}
		1575	}
1383		1576
1384	ev_stop (EV_A_ (W)w);	1577	ev_stop (EV_A_ (W)w);
1385	}	1578	}
1386		1579
1387	void	1580	void
1388	ev_periodic_again (EV_P_ struct ev_periodic *w)	1581	ev_periodic_again (EV_P_ ev_periodic *w)
1389	{	1582	{
1390	/* TODO: use adjustheap and recalculation */	1583	/* TODO: use adjustheap and recalculation */
1391	ev_periodic_stop (EV_A_ w);	1584	ev_periodic_stop (EV_A_ w);
1392	ev_periodic_start (EV_A_ w);	1585	ev_periodic_start (EV_A_ w);
1393	}	1586	}
1394		1587	#endif
1395	void
1396	ev_idle_start (EV_P_ struct ev_idle *w)
1397	{
1398	if (ev_is_active (w))
1399	return;
1400
1401	ev_start (EV_A_ (W)w, ++idlecnt);
1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403	idles [idlecnt - 1] = w;
1404	}
1405
1406	void
1407	ev_idle_stop (EV_P_ struct ev_idle *w)
1408	{
1409	ev_clear_pending (EV_A_ (W)w);
1410	if (ev_is_active (w))
1411	return;
1412
1413	idles [((W)w)->active - 1] = idles [--idlecnt];
1414	ev_stop (EV_A_ (W)w);
1415	}
1416
1417	void
1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
1419	{
1420	if (ev_is_active (w))
1421	return;
1422
1423	ev_start (EV_A_ (W)w, ++preparecnt);
1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425	prepares [preparecnt - 1] = w;
1426	}
1427
1428	void
1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430	{
1431	ev_clear_pending (EV_A_ (W)w);
1432	if (ev_is_active (w))
1433	return;
1434
1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436	ev_stop (EV_A_ (W)w);
1437	}
1438
1439	void
1440	ev_check_start (EV_P_ struct ev_check *w)
1441	{
1442	if (ev_is_active (w))
1443	return;
1444
1445	ev_start (EV_A_ (W)w, ++checkcnt);
1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447	checks [checkcnt - 1] = w;
1448	}
1449
1450	void
1451	ev_check_stop (EV_P_ struct ev_check *w)
1452	{
1453	ev_clear_pending (EV_A_ (W)w);
1454	if (ev_is_active (w))
1455	return;
1456
1457	checks [((W)w)->active - 1] = checks [--checkcnt];
1458	ev_stop (EV_A_ (W)w);
1459	}
1460		1588
1461	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1462	# define SA_RESTART 0	1590	# define SA_RESTART 0
1463	#endif	1591	#endif
1464		1592
1465	void	1593	void
1466	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ ev_signal *w)
1467	{	1595	{
1468	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470	#endif	1598	#endif
1471	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1472	return;	1600	return;
1473		1601
1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475		1603
1476	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479		1607
1480	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1481	{	1609	{
1482	#if WIN32	1610	#if _WIN32
1483	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1484	#else	1612	#else
1485	struct sigaction sa;	1613	struct sigaction sa;
1486	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1487	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1490	#endif	1618	#endif
1491	}	1619	}
1492	}	1620	}
1493		1621
1494	void	1622	void
1495	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ ev_signal *w)
1496	{	1624	{
1497	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1498	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1499	return;	1627	return;
1500		1628
1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1503		1631
1504	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1505	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1506	}	1634	}
1507		1635
1508	void	1636	void
1509	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ ev_child *w)
1510	{	1638	{
1511	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1512	assert (("child watchers are only supported in the default loop", loop == default_loop));	1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513	#endif	1641	#endif
1514	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1515	return;	1643	return;
1516		1644
1517	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	}	1647	}
1520		1648
1521	void	1649	void
1522	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ ev_child *w)
1523	{	1651	{
1524	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1525	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1526	return;	1654	return;
1527		1655
1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1530	}	1658	}
1531		1659
		1660	#if EV_STAT_ENABLE
		1661
		1662	# ifdef _WIN32
		1663	# undef lstat
		1664	# define lstat(a,b) _stati64 (a,b)
		1665	# endif
		1666
		1667	#define DEF_STAT_INTERVAL 5.0074891
		1668	#define MIN_STAT_INTERVAL 0.1074891
		1669
		1670	void
		1671	ev_stat_stat (EV_P_ ev_stat *w)
		1672	{
		1673	if (lstat (w->path, &w->attr) < 0)
		1674	w->attr.st_nlink = 0;
		1675	else if (!w->attr.st_nlink)
		1676	w->attr.st_nlink = 1;
		1677	}
		1678
		1679	static void
		1680	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1681	{
		1682	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1683
		1684	/* we copy this here each the time so that */
		1685	/* prev has the old value when the callback gets invoked */
		1686	w->prev = w->attr;
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1690	ev_feed_event (EV_A_ w, EV_STAT);
		1691	}
		1692
		1693	void
		1694	ev_stat_start (EV_P_ ev_stat *w)
		1695	{
		1696	if (expect_false (ev_is_active (w)))
		1697	return;
		1698
		1699	/* since we use memcmp, we need to clear any padding data etc. */
		1700	memset (&w->prev, 0, sizeof (ev_statdata));
		1701	memset (&w->attr, 0, sizeof (ev_statdata));
		1702
		1703	ev_stat_stat (EV_A_ w);
		1704
		1705	if (w->interval < MIN_STAT_INTERVAL)
		1706	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1707
		1708	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1709	ev_set_priority (&w->timer, ev_priority (w));
		1710	ev_timer_start (EV_A_ &w->timer);
		1711
		1712	ev_start (EV_A_ (W)w, 1);
		1713	}
		1714
		1715	void
		1716	ev_stat_stop (EV_P_ ev_stat *w)
		1717	{
		1718	ev_clear_pending (EV_A_ (W)w);
		1719	if (expect_false (!ev_is_active (w)))
		1720	return;
		1721
		1722	ev_timer_stop (EV_A_ &w->timer);
		1723
		1724	ev_stop (EV_A_ (W)w);
		1725	}
		1726	#endif
		1727
		1728	void
		1729	ev_idle_start (EV_P_ ev_idle *w)
		1730	{
		1731	if (expect_false (ev_is_active (w)))
		1732	return;
		1733
		1734	ev_start (EV_A_ (W)w, ++idlecnt);
		1735	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1736	idles [idlecnt - 1] = w;
		1737	}
		1738
		1739	void
		1740	ev_idle_stop (EV_P_ ev_idle *w)
		1741	{
		1742	ev_clear_pending (EV_A_ (W)w);
		1743	if (expect_false (!ev_is_active (w)))
		1744	return;
		1745
		1746	{
		1747	int active = ((W)w)->active;
		1748	idles [active - 1] = idles [--idlecnt];
		1749	((W)idles [active - 1])->active = active;
		1750	}
		1751
		1752	ev_stop (EV_A_ (W)w);
		1753	}
		1754
		1755	void
		1756	ev_prepare_start (EV_P_ ev_prepare *w)
		1757	{
		1758	if (expect_false (ev_is_active (w)))
		1759	return;
		1760
		1761	ev_start (EV_A_ (W)w, ++preparecnt);
		1762	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1763	prepares [preparecnt - 1] = w;
		1764	}
		1765
		1766	void
		1767	ev_prepare_stop (EV_P_ ev_prepare *w)
		1768	{
		1769	ev_clear_pending (EV_A_ (W)w);
		1770	if (expect_false (!ev_is_active (w)))
		1771	return;
		1772
		1773	{
		1774	int active = ((W)w)->active;
		1775	prepares [active - 1] = prepares [--preparecnt];
		1776	((W)prepares [active - 1])->active = active;
		1777	}
		1778
		1779	ev_stop (EV_A_ (W)w);
		1780	}
		1781
		1782	void
		1783	ev_check_start (EV_P_ ev_check *w)
		1784	{
		1785	if (expect_false (ev_is_active (w)))
		1786	return;
		1787
		1788	ev_start (EV_A_ (W)w, ++checkcnt);
		1789	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1790	checks [checkcnt - 1] = w;
		1791	}
		1792
		1793	void
		1794	ev_check_stop (EV_P_ ev_check *w)
		1795	{
		1796	ev_clear_pending (EV_A_ (W)w);
		1797	if (expect_false (!ev_is_active (w)))
		1798	return;
		1799
		1800	{
		1801	int active = ((W)w)->active;
		1802	checks [active - 1] = checks [--checkcnt];
		1803	((W)checks [active - 1])->active = active;
		1804	}
		1805
		1806	ev_stop (EV_A_ (W)w);
		1807	}
		1808
		1809	#if EV_EMBED_ENABLE
		1810	void noinline
		1811	ev_embed_sweep (EV_P_ ev_embed *w)
		1812	{
		1813	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1814	}
		1815
		1816	static void
		1817	embed_cb (EV_P_ ev_io *io, int revents)
		1818	{
		1819	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1820
		1821	if (ev_cb (w))
		1822	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1823	else
		1824	ev_embed_sweep (loop, w);
		1825	}
		1826
		1827	void
		1828	ev_embed_start (EV_P_ ev_embed *w)
		1829	{
		1830	if (expect_false (ev_is_active (w)))
		1831	return;
		1832
		1833	{
		1834	struct ev_loop *loop = w->loop;
		1835	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1836	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1837	}
		1838
		1839	ev_set_priority (&w->io, ev_priority (w));
		1840	ev_io_start (EV_A_ &w->io);
		1841
		1842	ev_start (EV_A_ (W)w, 1);
		1843	}
		1844
		1845	void
		1846	ev_embed_stop (EV_P_ ev_embed *w)
		1847	{
		1848	ev_clear_pending (EV_A_ (W)w);
		1849	if (expect_false (!ev_is_active (w)))
		1850	return;
		1851
		1852	ev_io_stop (EV_A_ &w->io);
		1853
		1854	ev_stop (EV_A_ (W)w);
		1855	}
		1856	#endif
		1857
		1858	#if EV_FORK_ENABLE
		1859	void
		1860	ev_fork_start (EV_P_ ev_fork *w)
		1861	{
		1862	if (expect_false (ev_is_active (w)))
		1863	return;
		1864
		1865	ev_start (EV_A_ (W)w, ++forkcnt);
		1866	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1867	forks [forkcnt - 1] = w;
		1868	}
		1869
		1870	void
		1871	ev_fork_stop (EV_P_ ev_fork *w)
		1872	{
		1873	ev_clear_pending (EV_A_ (W)w);
		1874	if (expect_false (!ev_is_active (w)))
		1875	return;
		1876
		1877	{
		1878	int active = ((W)w)->active;
		1879	forks [active - 1] = forks [--forkcnt];
		1880	((W)forks [active - 1])->active = active;
		1881	}
		1882
		1883	ev_stop (EV_A_ (W)w);
		1884	}
		1885	#endif
		1886
1532	/*****************************************************************************/	1887	/*****************************************************************************/
1533		1888
1534	struct ev_once	1889	struct ev_once
1535	{	1890	{
1536	struct ev_io io;	1891	ev_io io;
1537	struct ev_timer to;	1892	ev_timer to;
1538	void (*cb)(int revents, void *arg);	1893	void (*cb)(int revents, void *arg);
1539	void *arg;	1894	void *arg;
1540	};	1895	};
1541		1896
1542	static void	1897	static void
…		…
1551		1906
1552	cb (revents, arg);	1907	cb (revents, arg);
1553	}	1908	}
1554		1909
1555	static void	1910	static void
1556	once_cb_io (EV_P_ struct ev_io *w, int revents)	1911	once_cb_io (EV_P_ ev_io *w, int revents)
1557	{	1912	{
1558	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1913	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559	}	1914	}
1560		1915
1561	static void	1916	static void
1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1917	once_cb_to (EV_P_ ev_timer *w, int revents)
1563	{	1918	{
1564	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1919	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565	}	1920	}
1566		1921
1567	void	1922	void
1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1923	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569	{	1924	{
1570	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1925	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571		1926
1572	if (!once)	1927	if (expect_false (!once))
		1928	{
1573	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1929	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574	else	1930	return;
1575	{	1931	}
		1932
1576	once->cb = cb;	1933	once->cb = cb;
1577	once->arg = arg;	1934	once->arg = arg;
1578		1935
1579	ev_init (&once->io, once_cb_io);	1936	ev_init (&once->io, once_cb_io);
1580	if (fd >= 0)	1937	if (fd >= 0)
1581	{	1938	{
1582	ev_io_set (&once->io, fd, events);	1939	ev_io_set (&once->io, fd, events);
1583	ev_io_start (EV_A_ &once->io);	1940	ev_io_start (EV_A_ &once->io);
1584	}	1941	}
1585		1942
1586	ev_init (&once->to, once_cb_to);	1943	ev_init (&once->to, once_cb_to);
1587	if (timeout >= 0.)	1944	if (timeout >= 0.)
1588	{	1945	{
1589	ev_timer_set (&once->to, timeout, 0.);	1946	ev_timer_set (&once->to, timeout, 0.);
1590	ev_timer_start (EV_A_ &once->to);	1947	ev_timer_start (EV_A_ &once->to);
1591	}
1592	}	1948	}
1593	}	1949	}
1594		1950
		1951	#ifdef __cplusplus
		1952	}
		1953	#endif
		1954

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