ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.77 by root, Thu Nov 8 00:44:17 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
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
131	#include "ev.h"	194	# include "ev.h"
		195	#endif
132		196
133	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
135	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
136	#else	207	#else
137	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
138	# define inline static	210	# define inline_size static
		211	# define noinline
139	#endif	212	#endif
140		213
141	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
143		216
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
147	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
150		226
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		228
		229	#ifdef _WIN32
153	#include "ev_win32.c"	230	# include "ev_win32.c"
		231	#endif
154		232
155	/*****************************************************************************/	233	/*****************************************************************************/
156		234
157	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
158		236
		237	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	239	{
161	syserr_cb = cb;	240	syserr_cb = cb;
162	}	241	}
163		242
164	static void	243	static void noinline
165	syserr (const char *msg)	244	syserr (const char *msg)
166	{	245	{
167	if (!msg)	246	if (!msg)
168	msg = "(libev) system error";	247	msg = "(libev) system error";
169		248
…		…
174	perror (msg);	253	perror (msg);
175	abort ();	254	abort ();
176	}	255	}
177	}	256	}
178		257
179	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
180		259
		260	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
182	{	262	{
183	alloc = cb;	263	alloc = cb;
184	}	264	}
185		265
186	static void *	266	inline_speed void *
187	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
188	{	268	{
189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
190		270
191	if (!ptr && size)	271	if (!ptr && size)
192	{	272	{
193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
194	abort ();	274	abort ();
195	}	275	}
196		276
197	return ptr;	277	return ptr;
198	}	278	}
…		…
205	typedef struct	285	typedef struct
206	{	286	{
207	WL head;	287	WL head;
208	unsigned char events;	288	unsigned char events;
209	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
210	} ANFD;	293	} ANFD;
211		294
212	typedef struct	295	typedef struct
213	{	296	{
214	W w;	297	W w;
215	int events;	298	int events;
216	} ANPENDING;	299	} ANPENDING;
217		300
218	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
219		302
220	struct ev_loop	303	struct ev_loop
221	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	308	#include "ev_vars.h"
224	};
225	# undef VAR	309	#undef VAR
		310	};
226	# include "ev_wrap.h"	311	#include "ev_wrap.h"
		312
		313	static struct ev_loop default_loop_struct;
		314	struct ev_loop *ev_default_loop_ptr;
227		315
228	#else	316	#else
229		317
		318	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	320	#include "ev_vars.h"
232	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
233		324
234	#endif	325	#endif
235		326
236	/*****************************************************************************/	327	/*****************************************************************************/
237		328
238	inline ev_tstamp	329	ev_tstamp
239	ev_time (void)	330	ev_time (void)
240	{	331	{
241	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
242	struct timespec ts;	333	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	340	#endif
250	}	341	}
251		342
252	inline ev_tstamp	343	ev_tstamp inline_size
253	get_clock (void)	344	get_clock (void)
254	{	345	{
255	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
257	{	348	{
…		…
262	#endif	353	#endif
263		354
264	return ev_time ();	355	return ev_time ();
265	}	356	}
266		357
		358	#if EV_MULTIPLICITY
267	ev_tstamp	359	ev_tstamp
268	ev_now (EV_P)	360	ev_now (EV_P)
269	{	361	{
270	return rt_now;	362	return ev_rt_now;
271	}	363	}
		364	#endif
272		365
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		367
275	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
277	{ \	370	{ \
278	int newcnt = cur; \	371	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	389	}
297		390
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		393
306	/*****************************************************************************/	394	/*****************************************************************************/
307		395
308	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
309	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
310	{	426	{
311	while (count--)	427	while (count--)
312	{	428	{
313	base->head = 0;	429	base->head = 0;
…		…
316		432
317	++base;	433	++base;
318	}	434	}
319	}	435	}
320		436
321	static void	437	void inline_speed
322	event (EV_P_ W w, int events)
323	{
324	if (w->pending)
325	{
326	pendings [ABSPRI (w)][w->pending - 1].events |= events;
327	return;
328	}
329
330	w->pending = ++pendingcnt [ABSPRI (w)];
331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332	pendings [ABSPRI (w)][w->pending - 1].w = w;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;
334	}
335
336	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{
339	int i;
340
341	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);
343	}
344
345	static void
346	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
347	{	439	{
348	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	441	ev_io *w;
350		442
351	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)
352	{	444	{
353	int ev = w->events & events;	445	int ev = w->events & revents;
354		446
355	if (ev)	447	if (ev)
356	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
357	}	449	}
358	}	450	}
359		451
360	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
361		457
362	static void	458	void inline_size
363	fd_reify (EV_P)	459	fd_reify (EV_P)
364	{	460	{
365	int i;	461	int i;
366		462
367	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
368	{	464	{
369	int fd = fdchanges [i];	465	int fd = fdchanges [i];
370	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
371	struct ev_io *w;	467	ev_io *w;
372		468
373	int events = 0;	469	int events = 0;
374		470
375	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)
376	events |= w->events;	472	events |= w->events;
377		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
378	anfd->reify = 0;	483	anfd->reify = 0;
379		484
380	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	486	anfd->events = events;
382	}	487	}
383		488
384	fdchangecnt = 0;	489	fdchangecnt = 0;
385	}	490	}
386		491
387	static void	492	void inline_size
388	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
389	{	494	{
390	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
391	return;	496	return;
392		497
393	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
394		499
395	++fdchangecnt;	500	++fdchangecnt;
396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
398	}	503	}
399		504
400	static void	505	void inline_speed
401	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
402	{	507	{
403	struct ev_io *w;	508	ev_io *w;
404		509
405	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
406	{	511	{
407	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
408	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);
409	}	514	}
410	}	515	}
411		516
412	static int	517	int inline_size
413	fd_valid (int fd)	518	fd_valid (int fd)
414	{	519	{
415	#ifdef WIN32	520	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
417	#else	522	#else
418	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
419	#endif	524	#endif
420	}	525	}
421		526
422	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
423	static void	528	static void noinline
424	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
425	{	530	{
426	int fd;	531	int fd;
427		532
428	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
430	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
431	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
432	}	537	}
433		538
434	/* 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 */
435	static void	540	static void noinline
436	fd_enomem (EV_P)	541	fd_enomem (EV_P)
437	{	542	{
438	int fd;	543	int fd;
439		544
440	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
443	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
444	return;	549	return;
445	}	550	}
446	}	551	}
447		552
448	/* 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 */
449	static void	554	static void noinline
450	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
451	{	556	{
452	int fd;	557	int fd;
453		558
454	/* 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 */
…		…
460	}	565	}
461	}	566	}
462		567
463	/*****************************************************************************/	568	/*****************************************************************************/
464		569
465	static void	570	void inline_speed
466	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
467	{	572	{
468	WT w = heap [k];	573	WT w = heap [k];
469		574
470	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
477	heap [k] = w;	582	heap [k] = w;
478	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
479		584
480	}	585	}
481		586
482	static void	587	void inline_speed
483	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
484	{	589	{
485	WT w = heap [k];	590	WT w = heap [k];
486		591
487	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
501		606
502	heap [k] = w;	607	heap [k] = w;
503	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
504	}	609	}
505		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
506	/*****************************************************************************/	618	/*****************************************************************************/
507		619
508	typedef struct	620	typedef struct
509	{	621	{
510	WL head;	622	WL head;
…		…
514	static ANSIG *signals;	626	static ANSIG *signals;
515	static int signalmax;	627	static int signalmax;
516		628
517	static int sigpipe [2];	629	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	631	static ev_io sigev;
520		632
521	static void	633	void inline_size
522	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
523	{	635	{
524	while (count--)	636	while (count--)
525	{	637	{
526	base->head = 0;	638	base->head = 0;
…		…
531	}	643	}
532		644
533	static void	645	static void
534	sighandler (int signum)	646	sighandler (int signum)
535	{	647	{
536	#if WIN32	648	#if _WIN32
537	signal (signum, sighandler);	649	signal (signum, sighandler);
538	#endif	650	#endif
539		651
540	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
541		653
542	if (!gotsig)	654	if (!gotsig)
543	{	655	{
544	int old_errno = errno;	656	int old_errno = errno;
545	gotsig = 1;	657	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	659	errno = old_errno;
552	}	660	}
553	}	661	}
554		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
555	static void	683	static void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
557	{	685	{
558	WL w;
559	int signum;	686	int signum;
560		687
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	689	gotsig = 0;
567		690
568	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
570	{	693	ev_feed_signal_event (EV_A_ signum + 1);
571	signals [signum].gotsig = 0;
572
573	for (w = signals [signum].head; w; w = w->next)
574	event (EV_A_ (W)w, EV_SIGNAL);
575	}
576	}	694	}
577		695
578	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
579	siginit (EV_P)	709	siginit (EV_P)
580	{	710	{
581	#ifndef WIN32	711	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
583	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585	/* rather than sort out wether we really need nb, set it */
586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588	#endif
589		713
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	717	}
594		718
595	/*****************************************************************************/	719	/*****************************************************************************/
596		720
597	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
598		722
599	#ifndef WIN32	723	#ifndef _WIN32
600		724
601	static struct ev_signal childev;	725	static ev_signal childev;
602		726
603	#ifndef WCONTINUED	727	void inline_speed
604	# define WCONTINUED 0
605	#endif
606
607	static void
608	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)
609	{	729	{
610	struct ev_child *w;	730	ev_child *w;
611		731
612	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)
613	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
614	{	734	{
615	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616	w->rpid = pid;	736	w->rpid = pid;
617	w->rstatus = status;	737	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	739	}
620	}	740	}
621		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
622	static void	746	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
624	{	748	{
625	int pid, status;	749	int pid, status;
626		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
629	/* 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 */
630	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		761
632	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
633	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 */
634	}
635	}	765	}
636		766
637	#endif	767	#endif
638		768
639	/*****************************************************************************/	769	/*****************************************************************************/
640		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
641	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
643	#endif	776	#endif
644	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
662	{	795	{
663	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
664	}	797	}
665		798
666	/* 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 */
667	static int	800	int inline_size
668	enable_secure (void)	801	enable_secure (void)
669	{	802	{
670	#ifdef WIN32	803	#ifdef _WIN32
671	return 0;	804	return 0;
672	#else	805	#else
673	return getuid () != geteuid ()	806	return getuid () != geteuid ()
674	|| getgid () != getegid ();	807	|| getgid () != getegid ();
675	#endif	808	#endif
676	}	809	}
677		810
678	int	811	unsigned int
679	ev_method (EV_P)	812	ev_supported_backends (void)
680	{	813	{
681	return method;	814	unsigned int flags = 0;
682	}
683		815
684	static void	816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685	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)
686	{	827	{
687	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)
688	{	861	{
689	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
690	{	863	{
691	struct timespec ts;	864	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	866	have_monotonic = 1;
694	}	867	}
695	#endif	868	#endif
696		869
697	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	871	mn_now = get_clock ();
699	now_floor = mn_now;	872	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
701		874
702	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		879
708	method = 0;	880	if (!(flags & 0x0000ffffUL))
709	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
710	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);
711	#endif	886	#endif
712	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	889	#endif
715	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	892	#endif
718	#if EV_USE_POLL	893	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	895	#endif
721	#if EV_USE_SELECT	896	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	898	#endif
724		899
725	ev_watcher_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
727	}	902	}
728	}	903	}
729		904
730	void	905	static void noinline
731	loop_destroy (EV_P)	906	loop_destroy (EV_P)
732	{	907	{
733	int i;	908	int i;
734		909
735	#if EV_USE_WIN32	910	#if EV_USE_PORT
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	912	#endif
738	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	915	#endif
741	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	918	#endif
744	#if EV_USE_POLL	919	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	921	#endif
747	#if EV_USE_SELECT	922	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	924	#endif
750		925
751	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	927	array_free (pending, [i]);
753		928
754	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
758	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	934	#endif
760	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
761		938
762	method = 0;	939	backend = 0;
763	}	940	}
764		941
765	static void	942	void inline_size
766	loop_fork (EV_P)	943	loop_fork (EV_P)
767	{	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
768	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770	#endif
771	#if EV_USE_KQUEUE
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
773	#endif	953	#endif
774		954
775	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
776	{	956	{
777	/* default loop */	957	/* default loop */
…		…
790	postfork = 0;	970	postfork = 0;
791	}	971	}
792		972
793	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
794	struct ev_loop *	974	struct ev_loop *
795	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
796	{	976	{
797	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));
798		978
799	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
800		980
801	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
802		982
803	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
804	return loop;	984	return loop;
805		985
806	return 0;	986	return 0;
807	}	987	}
808		988
…		…
820	}	1000	}
821		1001
822	#endif	1002	#endif
823		1003
824	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
829	#else	1007	#else
830	static int default_loop;
831
832	int	1008	int
		1009	ev_default_loop (unsigned int flags)
833	#endif	1010	#endif
834	ev_default_loop (int methods)
835	{	1011	{
836	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
838	return 0;	1014	return 0;
839		1015
840	if (!default_loop)	1016	if (!ev_default_loop_ptr)
841	{	1017	{
842	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	1020	#else
845	default_loop = 1;	1021	ev_default_loop_ptr = 1;
846	#endif	1022	#endif
847		1023
848	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
849		1025
850	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
851	{	1027	{
852	siginit (EV_A);	1028	siginit (EV_A);
853		1029
854	#ifndef WIN32	1030	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1035	#endif
860	}	1036	}
861	else	1037	else
862	default_loop = 0;	1038	ev_default_loop_ptr = 0;
863	}	1039	}
864		1040
865	return default_loop;	1041	return ev_default_loop_ptr;
866	}	1042	}
867		1043
868	void	1044	void
869	ev_default_destroy (void)	1045	ev_default_destroy (void)
870	{	1046	{
871	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1049	#endif
874		1050
875	#ifndef WIN32	1051	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
878	#endif	1054	#endif
879		1055
880	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
888		1064
889	void	1065	void
890	ev_default_fork (void)	1066	ev_default_fork (void)
891	{	1067	{
892	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1070	#endif
895		1071
896	if (method)	1072	if (backend)
897	postfork = 1;	1073	postfork = 1;
898	}	1074	}
899		1075
900	/*****************************************************************************/	1076	/*****************************************************************************/
901		1077
902	static int	1078	int inline_size
903	any_pending (EV_P)	1079	any_pending (EV_P)
904	{	1080	{
905	int pri;	1081	int pri;
906		1082
907	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
909	return 1;	1085	return 1;
910		1086
911	return 0;	1087	return 0;
912	}	1088	}
913		1089
914	static void	1090	void inline_speed
915	call_pending (EV_P)	1091	call_pending (EV_P)
916	{	1092	{
917	int pri;	1093	int pri;
918		1094
919	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
920	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
921	{	1097	{
922	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923		1099
924	if (p->w)	1100	if (expect_true (p->w))
925	{	1101	{
		1102	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1103
926	p->w->pending = 0;	1104	p->w->pending = 0;
927	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
928	}	1106	}
929	}	1107	}
930	}	1108	}
931		1109
932	static void	1110	void inline_size
933	timers_reify (EV_P)	1111	timers_reify (EV_P)
934	{	1112	{
935	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
936	{	1114	{
937	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
938		1116
939	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
940		1118
941	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
942	if (w->repeat)	1120	if (w->repeat)
943	{	1121	{
944	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
945	((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
946	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
947	}	1129	}
948	else	1130	else
949	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950		1132
951	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952	}	1134	}
953	}	1135	}
954		1136
955	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
956	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
957	{	1140	{
958	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959	{	1142	{
960	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
961		1144
962	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
963		1146
964	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
965	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
966	{	1149	{
967	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);
968
969	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));
970	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
971	}	1153	}
972	else if (w->interval)	1154	else if (w->interval)
973	{	1155	{
974	((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;
975	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));
976	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
977	}	1159	}
978	else	1160	else
979	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
980		1162
981	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
982	}	1164	}
983	}	1165	}
984		1166
985	static void	1167	static void noinline
986	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
987	{	1169	{
988	int i;	1170	int i;
989		1171
990	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
991	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
992	{	1174	{
993	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
994		1176
995	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
996	((WT)w)->at = w->reschedule_cb (w, rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
997	else if (w->interval)	1179	else if (w->interval)
998	((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;
999	}	1181	}
1000		1182
1001	/* now rebuild the heap */	1183	/* now rebuild the heap */
1002	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1003	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1004	}	1186	}
		1187	#endif
1005		1188
1006	inline int	1189	int inline_size
1007	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1008	{	1191	{
1009	mn_now = get_clock ();	1192	mn_now = get_clock ();
1010		1193
1011	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1012	{	1195	{
1013	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
1014	return 0;	1197	return 0;
1015	}	1198	}
1016	else	1199	else
1017	{	1200	{
1018	now_floor = mn_now;	1201	now_floor = mn_now;
1019	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1020	return 1;	1203	return 1;
1021	}	1204	}
1022	}	1205	}
1023		1206
1024	static void	1207	void inline_size
1025	time_update (EV_P)	1208	time_update (EV_P)
1026	{	1209	{
1027	int i;	1210	int i;
1028		1211
1029	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1031	{	1214	{
1032	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1033	{	1216	{
1034	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1035		1218
1036	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; )
1037	{	1228	{
1038	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1039		1230
1040	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1041	return; /* all is well */	1232	return; /* all is well */
1042		1233
1043	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1044	mn_now = get_clock ();	1235	mn_now = get_clock ();
1045	now_floor = mn_now;	1236	now_floor = mn_now;
1046	}	1237	}
1047		1238
		1239	# if EV_PERIODIC_ENABLE
1048	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1049	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1050	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1051	}	1244	}
1052	}	1245	}
1053	else	1246	else
1054	#endif	1247	#endif
1055	{	1248	{
1056	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1057		1250
1058	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))
1059	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1060	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1061		1256
1062	/* 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 */
1063	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1064	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1065	}	1260	}
1066		1261
1067	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1068	}	1263	}
1069	}	1264	}
1070		1265
1071	void	1266	void
1072	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1083	static int loop_done;	1278	static int loop_done;
1084		1279
1085	void	1280	void
1086	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1087	{	1282	{
1088	double block;
1089	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1090		1286
1091	do	1287	while (activecnt)
1092	{	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
1093	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1094	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1095	{	1301	{
1096	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1097	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1103		1309
1104	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1105	fd_reify (EV_A);	1311	fd_reify (EV_A);
1106		1312
1107	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1108		1316
1109	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1110	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 */
1111	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1112	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1113	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1114	else	1325	else
1115	#endif	1326	#endif
1116	{	1327	{
1117	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1118	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1119	}	1330	}
1120		1331
1121	if (flags & EVLOOP_NONBLOCK || idlecnt)
1122	block = 0.;
1123	else
1124	{
1125	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1126		1333
1127	if (timercnt)	1334	if (timercnt)
1128	{	1335	{
1129	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1130	if (block > to) block = to;	1337	if (block > to) block = to;
1131	}	1338	}
1132		1339
		1340	#if EV_PERIODIC_ENABLE
1133	if (periodiccnt)	1341	if (periodiccnt)
1134	{	1342	{
1135	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1136	if (block > to) block = to;	1344	if (block > to) block = to;
1137	}	1345	}
		1346	#endif
1138		1347
1139	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1140	}	1349	}
1141		1350
1142	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1143		1353
1144	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1145	time_update (EV_A);	1355	time_update (EV_A);
1146		1356
1147	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1148	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1149	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1150		1362
1151	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1152	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1153	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1154		1366
1155	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1156	if (checkcnt)	1368	if (expect_false (checkcnt))
1157	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1158		1370
1159	call_pending (EV_A);	1371	call_pending (EV_A);
1160	}
1161	while (activecnt && !loop_done);
1162		1372
1163	if (loop_done != 2)	1373	if (expect_false (loop_done))
1164	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1165	}	1379	}
1166		1380
1167	void	1381	void
1168	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1169	{	1383	{
1170	loop_done = how;	1384	loop_done = how;
1171	}	1385	}
1172		1386
1173	/*****************************************************************************/	1387	/*****************************************************************************/
1174		1388
1175	inline void	1389	void inline_size
1176	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1177	{	1391	{
1178	elem->next = *head;	1392	elem->next = *head;
1179	*head = elem;	1393	*head = elem;
1180	}	1394	}
1181		1395
1182	inline void	1396	void inline_size
1183	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1184	{	1398	{
1185	while (*head)	1399	while (*head)
1186	{	1400	{
1187	if (*head == elem)	1401	if (*head == elem)
…		…
1192		1406
1193	head = &(*head)->next;	1407	head = &(*head)->next;
1194	}	1408	}
1195	}	1409	}
1196		1410
1197	inline void	1411	void inline_speed
1198	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1199	{	1413	{
1200	if (w->pending)	1414	if (w->pending)
1201	{	1415	{
1202	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1203	w->pending = 0;	1417	w->pending = 0;
1204	}	1418	}
1205	}	1419	}
1206		1420
1207	inline void	1421	void inline_speed
1208	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1209	{	1423	{
1210	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1211	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1212		1426
1213	w->active = active;	1427	w->active = active;
1214	ev_ref (EV_A);	1428	ev_ref (EV_A);
1215	}	1429	}
1216		1430
1217	inline void	1431	void inline_size
1218	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1219	{	1433	{
1220	ev_unref (EV_A);	1434	ev_unref (EV_A);
1221	w->active = 0;	1435	w->active = 0;
1222	}	1436	}
1223		1437
1224	/*****************************************************************************/	1438	/*****************************************************************************/
1225		1439
1226	void	1440	void
1227	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1228	{	1442	{
1229	int fd = w->fd;	1443	int fd = w->fd;
1230		1444
1231	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1232	return;	1446	return;
1233		1447
1234	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1235		1449
1236	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1239		1453
1240	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1241	}	1455	}
1242		1456
1243	void	1457	void
1244	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1245	{	1459	{
1246	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1247	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1248	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1249		1465
1250	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1251	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1252		1468
1253	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1254	}	1470	}
1255		1471
1256	void	1472	void
1257	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1258	{	1474	{
1259	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1260	return;	1476	return;
1261		1477
1262	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1263		1479
1264	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.));
1265		1481
1266	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1267	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1268	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1269	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1270		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
1271	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1272	}
1273		1498
1274	void	1499	{
1275	ev_timer_stop (EV_P_ struct ev_timer *w)	1500	int active = ((W)w)->active;
1276	{
1277	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))
1279	return;
1280		1501
1281	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1502	if (expect_true (--active < --timercnt))
1282
1283	if (((W)w)->active < timercnt--)
1284	{	1503	{
1285	timers [((W)w)->active - 1] = timers [timercnt];	1504	timers [active] = timers [timercnt];
1286	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1505	adjustheap ((WT *)timers, timercnt, active);
1287	}	1506	}
		1507	}
1288		1508
1289	((WT)w)->at = w->repeat;	1509	((WT)w)->at -= mn_now;
1290		1510
1291	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1292	}	1512	}
1293		1513
1294	void	1514	void
1295	ev_timer_again (EV_P_ struct ev_timer *w)	1515	ev_timer_again (EV_P_ ev_timer *w)
1296	{	1516	{
1297	if (ev_is_active (w))	1517	if (ev_is_active (w))
1298	{	1518	{
1299	if (w->repeat)	1519	if (w->repeat)
1300	{	1520	{
1301	((WT)w)->at = mn_now + w->repeat;	1521	((WT)w)->at = mn_now + w->repeat;
1302	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1522	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1303	}	1523	}
1304	else	1524	else
1305	ev_timer_stop (EV_A_ w);	1525	ev_timer_stop (EV_A_ w);
1306	}	1526	}
1307	else if (w->repeat)	1527	else if (w->repeat)
		1528	{
		1529	w->at = w->repeat;
1308	ev_timer_start (EV_A_ w);	1530	ev_timer_start (EV_A_ w);
		1531	}
1309	}	1532	}
1310		1533
		1534	#if EV_PERIODIC_ENABLE
1311	void	1535	void
1312	ev_periodic_start (EV_P_ struct ev_periodic *w)	1536	ev_periodic_start (EV_P_ ev_periodic *w)
1313	{	1537	{
1314	if (ev_is_active (w))	1538	if (expect_false (ev_is_active (w)))
1315	return;	1539	return;
1316		1540
1317	if (w->reschedule_cb)	1541	if (w->reschedule_cb)
1318	((WT)w)->at = w->reschedule_cb (w, rt_now);	1542	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1319	else if (w->interval)	1543	else if (w->interval)
1320	{	1544	{
1321	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.));
1322	/* 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 */
1323	((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;
1324	}	1548	}
1325		1549
1326	ev_start (EV_A_ (W)w, ++periodiccnt);	1550	ev_start (EV_A_ (W)w, ++periodiccnt);
1327	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1551	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1328	periodics [periodiccnt - 1] = w;	1552	periodics [periodiccnt - 1] = w;
1329	upheap ((WT *)periodics, periodiccnt - 1);	1553	upheap ((WT *)periodics, periodiccnt - 1);
1330		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
1331	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1565	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1332	}
1333		1566
1334	void	1567	{
1335	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1568	int active = ((W)w)->active;
1336	{
1337	ev_clear_pending (EV_A_ (W)w);
1338	if (!ev_is_active (w))
1339	return;
1340		1569
1341	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1570	if (expect_true (--active < --periodiccnt))
1342
1343	if (((W)w)->active < periodiccnt--)
1344	{	1571	{
1345	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1572	periodics [active] = periodics [periodiccnt];
1346	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1573	adjustheap ((WT *)periodics, periodiccnt, active);
1347	}	1574	}
		1575	}
1348		1576
1349	ev_stop (EV_A_ (W)w);	1577	ev_stop (EV_A_ (W)w);
1350	}	1578	}
1351		1579
1352	void	1580	void
1353	ev_periodic_again (EV_P_ struct ev_periodic *w)	1581	ev_periodic_again (EV_P_ ev_periodic *w)
1354	{	1582	{
		1583	/* TODO: use adjustheap and recalculation */
1355	ev_periodic_stop (EV_A_ w);	1584	ev_periodic_stop (EV_A_ w);
1356	ev_periodic_start (EV_A_ w);	1585	ev_periodic_start (EV_A_ w);
1357	}	1586	}
1358		1587	#endif
1359	void
1360	ev_idle_start (EV_P_ struct ev_idle *w)
1361	{
1362	if (ev_is_active (w))
1363	return;
1364
1365	ev_start (EV_A_ (W)w, ++idlecnt);
1366	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1367	idles [idlecnt - 1] = w;
1368	}
1369
1370	void
1371	ev_idle_stop (EV_P_ struct ev_idle *w)
1372	{
1373	ev_clear_pending (EV_A_ (W)w);
1374	if (ev_is_active (w))
1375	return;
1376
1377	idles [((W)w)->active - 1] = idles [--idlecnt];
1378	ev_stop (EV_A_ (W)w);
1379	}
1380
1381	void
1382	ev_prepare_start (EV_P_ struct ev_prepare *w)
1383	{
1384	if (ev_is_active (w))
1385	return;
1386
1387	ev_start (EV_A_ (W)w, ++preparecnt);
1388	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1389	prepares [preparecnt - 1] = w;
1390	}
1391
1392	void
1393	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1394	{
1395	ev_clear_pending (EV_A_ (W)w);
1396	if (ev_is_active (w))
1397	return;
1398
1399	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1400	ev_stop (EV_A_ (W)w);
1401	}
1402
1403	void
1404	ev_check_start (EV_P_ struct ev_check *w)
1405	{
1406	if (ev_is_active (w))
1407	return;
1408
1409	ev_start (EV_A_ (W)w, ++checkcnt);
1410	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1411	checks [checkcnt - 1] = w;
1412	}
1413
1414	void
1415	ev_check_stop (EV_P_ struct ev_check *w)
1416	{
1417	ev_clear_pending (EV_A_ (W)w);
1418	if (ev_is_active (w))
1419	return;
1420
1421	checks [((W)w)->active - 1] = checks [--checkcnt];
1422	ev_stop (EV_A_ (W)w);
1423	}
1424		1588
1425	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1426	# define SA_RESTART 0	1590	# define SA_RESTART 0
1427	#endif	1591	#endif
1428		1592
1429	void	1593	void
1430	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ ev_signal *w)
1431	{	1595	{
1432	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1433	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));
1434	#endif	1598	#endif
1435	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1436	return;	1600	return;
1437		1601
1438	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));
1439		1603
1440	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1441	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1442	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1443		1607
1444	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1445	{	1609	{
1446	#if WIN32	1610	#if _WIN32
1447	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1448	#else	1612	#else
1449	struct sigaction sa;	1613	struct sigaction sa;
1450	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1451	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1454	#endif	1618	#endif
1455	}	1619	}
1456	}	1620	}
1457		1621
1458	void	1622	void
1459	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ ev_signal *w)
1460	{	1624	{
1461	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1462	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1463	return;	1627	return;
1464		1628
1465	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1466	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1467		1631
1468	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1469	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1470	}	1634	}
1471		1635
1472	void	1636	void
1473	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ ev_child *w)
1474	{	1638	{
1475	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1476	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));
1477	#endif	1641	#endif
1478	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1479	return;	1643	return;
1480		1644
1481	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1482	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1483	}	1647	}
1484		1648
1485	void	1649	void
1486	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ ev_child *w)
1487	{	1651	{
1488	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1489	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1490	return;	1654	return;
1491		1655
1492	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1493	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1494	}	1658	}
1495		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
1496	/*****************************************************************************/	1887	/*****************************************************************************/
1497		1888
1498	struct ev_once	1889	struct ev_once
1499	{	1890	{
1500	struct ev_io io;	1891	ev_io io;
1501	struct ev_timer to;	1892	ev_timer to;
1502	void (*cb)(int revents, void *arg);	1893	void (*cb)(int revents, void *arg);
1503	void *arg;	1894	void *arg;
1504	};	1895	};
1505		1896
1506	static void	1897	static void
…		…
1515		1906
1516	cb (revents, arg);	1907	cb (revents, arg);
1517	}	1908	}
1518		1909
1519	static void	1910	static void
1520	once_cb_io (EV_P_ struct ev_io *w, int revents)	1911	once_cb_io (EV_P_ ev_io *w, int revents)
1521	{	1912	{
1522	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);
1523	}	1914	}
1524		1915
1525	static void	1916	static void
1526	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1917	once_cb_to (EV_P_ ev_timer *w, int revents)
1527	{	1918	{
1528	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);
1529	}	1920	}
1530		1921
1531	void	1922	void
1532	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)
1533	{	1924	{
1534	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));
1535		1926
1536	if (!once)	1927	if (expect_false (!once))
		1928	{
1537	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1929	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1538	else	1930	return;
1539	{	1931	}
		1932
1540	once->cb = cb;	1933	once->cb = cb;
1541	once->arg = arg;	1934	once->arg = arg;
1542		1935
1543	ev_watcher_init (&once->io, once_cb_io);	1936	ev_init (&once->io, once_cb_io);
1544	if (fd >= 0)	1937	if (fd >= 0)
1545	{	1938	{
1546	ev_io_set (&once->io, fd, events);	1939	ev_io_set (&once->io, fd, events);
1547	ev_io_start (EV_A_ &once->io);	1940	ev_io_start (EV_A_ &once->io);
1548	}	1941	}
1549		1942
1550	ev_watcher_init (&once->to, once_cb_to);	1943	ev_init (&once->to, once_cb_to);
1551	if (timeout >= 0.)	1944	if (timeout >= 0.)
1552	{	1945	{
1553	ev_timer_set (&once->to, timeout, 0.);	1946	ev_timer_set (&once->to, timeout, 0.);
1554	ev_timer_start (EV_A_ &once->to);	1947	ev_timer_start (EV_A_ &once->to);
1555	}
1556	}	1948	}
1557	}	1949	}
1558		1950
		1951	#ifdef __cplusplus
		1952	}
		1953	#endif
		1954

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines