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Comparing libev/ev.c (file contents):
Revision 1.82 by root, Fri Nov 9 20:55:09 2007 UTC vs.
Revision 1.144 by root, Tue Nov 27 08:11:52 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
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
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
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#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) */	180	#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 */	181	#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 */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		183
131	#ifdef EV_H	184	#ifdef EV_H
132	# include EV_H	185	# include EV_H
133	#else	186	#else
134	# include "ev.h"	187	# include "ev.h"
135	#endif	188	#endif
136		189
137	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
139	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
140	#else	200	#else
141	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
142	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
143	#endif	205	#endif
144		206
145	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
147		209
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
151	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
154		219
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		221
		222	#ifdef _WIN32
157	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
158		225
159	/*****************************************************************************/	226	/*****************************************************************************/
160		227
161	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
162		229
		230	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	232	{
165	syserr_cb = cb;	233	syserr_cb = cb;
166	}	234	}
167		235
168	static void	236	static void noinline
169	syserr (const char *msg)	237	syserr (const char *msg)
170	{	238	{
171	if (!msg)	239	if (!msg)
172	msg = "(libev) system error";	240	msg = "(libev) system error";
173		241
…		…
180	}	248	}
181	}	249	}
182		250
183	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
184		252
		253	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	255	{
187	alloc = cb;	256	alloc = cb;
188	}	257	}
189		258
190	static void *	259	static void *
…		…
209	typedef struct	278	typedef struct
210	{	279	{
211	WL head;	280	WL head;
212	unsigned char events;	281	unsigned char events;
213	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
214	} ANFD;	286	} ANFD;
215		287
216	typedef struct	288	typedef struct
217	{	289	{
218	W w;	290	W w;
…		…
221		293
222	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
223		295
224	struct ev_loop	296	struct ev_loop
225	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	301	#include "ev_vars.h"
228	#undef VAR	302	#undef VAR
229	};	303	};
230	#include "ev_wrap.h"	304	#include "ev_wrap.h"
231		305
232	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
234		308
235	#else	309	#else
236		310
		311	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	313	#include "ev_vars.h"
239	#undef VAR	314	#undef VAR
240		315
241	static int default_loop;	316	static int ev_default_loop_ptr;
242		317
243	#endif	318	#endif
244		319
245	/*****************************************************************************/	320	/*****************************************************************************/
246		321
247	inline ev_tstamp	322	ev_tstamp
248	ev_time (void)	323	ev_time (void)
249	{	324	{
250	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
251	struct timespec ts;	326	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	333	#endif
259	}	334	}
260		335
261	inline ev_tstamp	336	ev_tstamp inline_size
262	get_clock (void)	337	get_clock (void)
263	{	338	{
264	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
266	{	341	{
…		…
271	#endif	346	#endif
272		347
273	return ev_time ();	348	return ev_time ();
274	}	349	}
275		350
		351	#if EV_MULTIPLICITY
276	ev_tstamp	352	ev_tstamp
277	ev_now (EV_P)	353	ev_now (EV_P)
278	{	354	{
279	return rt_now;	355	return ev_rt_now;
280	}	356	}
		357	#endif
281		358
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		360
284	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
286	{ \	363	{ \
287	int newcnt = cur; \	364	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	382	}
306		383
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) \	384	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		386
315	/*****************************************************************************/	387	/*****************************************************************************/
316		388
317	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
318	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
319	{	419	{
320	while (count--)	420	while (count--)
321	{	421	{
322	base->head = 0;	422	base->head = 0;
…		…
325		425
326	++base;	426	++base;
327	}	427	}
328	}	428	}
329		429
330	void	430	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)	431	fd_event (EV_P_ int fd, int revents)
358	{	432	{
359	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	434	ev_io *w;
361		435
362	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363	{	437	{
364	int ev = w->events & revents;	438	int ev = w->events & revents;
365		439
366	if (ev)	440	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	447	{
374	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
375	}	449	}
376		450
377	/*****************************************************************************/	451	void inline_size
378
379	static void
380	fd_reify (EV_P)	452	fd_reify (EV_P)
381	{	453	{
382	int i;	454	int i;
383		455
384	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
385	{	457	{
386	int fd = fdchanges [i];	458	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	460	ev_io *w;
389		461
390	int events = 0;	462	int events = 0;
391		463
392	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393	events |= w->events;	465	events |= w->events;
394		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
395	anfd->reify = 0;	476	anfd->reify = 0;
396		477
397	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	479	anfd->events = events;
399	}	480	}
400		481
401	fdchangecnt = 0;	482	fdchangecnt = 0;
402	}	483	}
403		484
404	static void	485	void inline_size
405	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
406	{	487	{
407	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
408	return;	489	return;
409		490
410	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
411		492
412	++fdchangecnt;	493	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
415	}	496	}
416		497
417	static void	498	void inline_speed
418	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
419	{	500	{
420	struct ev_io *w;	501	ev_io *w;
421		502
422	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
423	{	504	{
424	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426	}	507	}
427	}	508	}
428		509
429	static int	510	int inline_size
430	fd_valid (int fd)	511	fd_valid (int fd)
431	{	512	{
432	#ifdef WIN32	513	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
434	#else	515	#else
435	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
436	#endif	517	#endif
437	}	518	}
438		519
439	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
440	static void	521	static void noinline
441	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
442	{	523	{
443	int fd;	524	int fd;
444		525
445	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
449	}	530	}
450		531
451	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
452	static void	533	static void noinline
453	fd_enomem (EV_P)	534	fd_enomem (EV_P)
454	{	535	{
455	int fd;	536	int fd;
456		537
457	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
461	return;	542	return;
462	}	543	}
463	}	544	}
464		545
465	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
466	static void	547	static void noinline
467	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
468	{	549	{
469	int fd;	550	int fd;
470		551
471	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
477	}	558	}
478	}	559	}
479		560
480	/*****************************************************************************/	561	/*****************************************************************************/
481		562
482	static void	563	void inline_speed
483	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
484	{	565	{
485	WT w = heap [k];	566	WT w = heap [k];
486		567
487	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	575	heap [k] = w;
495	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
496		577
497	}	578	}
498		579
499	static void	580	void inline_speed
500	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
501	{	582	{
502	WT w = heap [k];	583	WT w = heap [k];
503		584
504	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
518		599
519	heap [k] = w;	600	heap [k] = w;
520	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
521	}	602	}
522		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
		609	}
		610
523	/*****************************************************************************/	611	/*****************************************************************************/
524		612
525	typedef struct	613	typedef struct
526	{	614	{
527	WL head;	615	WL head;
…		…
531	static ANSIG *signals;	619	static ANSIG *signals;
532	static int signalmax;	620	static int signalmax;
533		621
534	static int sigpipe [2];	622	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	624	static ev_io sigev;
537		625
538	static void	626	void inline_size
539	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
540	{	628	{
541	while (count--)	629	while (count--)
542	{	630	{
543	base->head = 0;	631	base->head = 0;
…		…
548	}	636	}
549		637
550	static void	638	static void
551	sighandler (int signum)	639	sighandler (int signum)
552	{	640	{
553	#if WIN32	641	#if _WIN32
554	signal (signum, sighandler);	642	signal (signum, sighandler);
555	#endif	643	#endif
556		644
557	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
558		646
559	if (!gotsig)	647	if (!gotsig)
560	{	648	{
561	int old_errno = errno;	649	int old_errno = errno;
562	gotsig = 1;	650	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	652	errno = old_errno;
569	}	653	}
570	}	654	}
571		655
572	void	656	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
574	{	658	{
575	WL w;	659	WL w;
576		660
577	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
578	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
579	#endif	663	#endif
580		664
581	--signum;	665	--signum;
582		666
583	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	674	}
591		675
592	static void	676	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
594	{	678	{
595	int signum;	679	int signum;
596		680
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	682	gotsig = 0;
603		683
604	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
607	}	687	}
608		688
609	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
610	siginit (EV_P)	702	siginit (EV_P)
611	{	703	{
612	#ifndef WIN32	704	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
614	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
615
616	/* rather than sort out wether we really need nb, set it */
617	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
618	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
619	#endif
620		706
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	710	}
625		711
626	/*****************************************************************************/	712	/*****************************************************************************/
627		713
628	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
629		715
630	#ifndef WIN32	716	#ifndef _WIN32
631		717
632	static struct ev_signal childev;	718	static ev_signal childev;
633		719
634	#ifndef WCONTINUED	720	void inline_speed
635	# define WCONTINUED 0
636	#endif
637
638	static void
639	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
640	{	722	{
641	struct ev_child *w;	723	ev_child *w;
642		724
643	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
644	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
645	{	727	{
646	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647	w->rpid = pid;	729	w->rpid = pid;
648	w->rstatus = status;	730	w->rstatus = status;
649	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
650	}	732	}
651	}	733	}
652		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
653	static void	739	static void
654	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
655	{	741	{
656	int pid, status;	742	int pid, status;
657		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
660	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* we need to do it this way so that the callback gets called before we continue */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		754
663	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
664	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
665	}
666	}	757	}
667		758
668	#endif	759	#endif
669		760
670	/*****************************************************************************/	761	/*****************************************************************************/
671		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
672	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
674	#endif	768	#endif
675	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
693	{	787	{
694	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
695	}	789	}
696		790
697	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
698	static int	792	int inline_size
699	enable_secure (void)	793	enable_secure (void)
700	{	794	{
701	#ifdef WIN32	795	#ifdef _WIN32
702	return 0;	796	return 0;
703	#else	797	#else
704	return getuid () != geteuid ()	798	return getuid () != geteuid ()
705	|| getgid () != getegid ();	799	|| getgid () != getegid ();
706	#endif	800	#endif
707	}	801	}
708		802
709	int	803	unsigned int
710	ev_method (EV_P)	804	ev_supported_backends (void)
711	{	805	{
712	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	| EVBACKEND_KQUEUE
		840	| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
713	}	847	}
714		848
715	static void	849	static void
716	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
717	{	851	{
718	if (!method)	852	if (!backend)
719	{	853	{
720	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
721	{	855	{
722	struct timespec ts;	856	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	858	have_monotonic = 1;
725	}	859	}
726	#endif	860	#endif
727		861
728	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	863	mn_now = get_clock ();
730	now_floor = mn_now;	864	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
732		866
733	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
734	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		871
739	method = 0;	872	if (!(flags & 0x0000ffffUL))
740	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
741	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
742	#endif	878	#endif
743	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	881	#endif
746	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	884	#endif
749	#if EV_USE_POLL	885	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	887	#endif
752	#if EV_USE_SELECT	888	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	890	#endif
755		891
756	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
758	}	894	}
759	}	895	}
760		896
761	void	897	static void
762	loop_destroy (EV_P)	898	loop_destroy (EV_P)
763	{	899	{
764	int i;	900	int i;
765		901
766	#if EV_USE_WIN32	902	#if EV_USE_PORT
767	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
768	#endif	904	#endif
769	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	907	#endif
772	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	910	#endif
775	#if EV_USE_POLL	911	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	913	#endif
778	#if EV_USE_SELECT	914	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	916	#endif
781		917
782	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
783	array_free (pending, [i]);	919	array_free (pending, [i]);
784		920
785	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
787	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
788	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
790	array_free_microshit (prepare);	926	#endif
791	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
792		930
793	method = 0;	931	backend = 0;
794	}	932	}
795		933
796	static void	934	static void
797	loop_fork (EV_P)	935	loop_fork (EV_P)
798	{	936	{
		937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
799	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801	#endif
802	#if EV_USE_KQUEUE
803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
804	#endif	945	#endif
805		946
806	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
807	{	948	{
808	/* default loop */	949	/* default loop */
…		…
821	postfork = 0;	962	postfork = 0;
822	}	963	}
823		964
824	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
825	struct ev_loop *	966	struct ev_loop *
826	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
827	{	968	{
828	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
829		970
830	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
831		972
832	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
833		974
834	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
835	return loop;	976	return loop;
836		977
837	return 0;	978	return 0;
838	}	979	}
839		980
…		…
852		993
853	#endif	994	#endif
854		995
855	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
856	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
857	#else	999	#else
858	int	1000	int
		1001	ev_default_loop (unsigned int flags)
859	#endif	1002	#endif
860	ev_default_loop (int methods)
861	{	1003	{
862	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
864	return 0;	1006	return 0;
865		1007
866	if (!default_loop)	1008	if (!ev_default_loop_ptr)
867	{	1009	{
868	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1012	#else
871	default_loop = 1;	1013	ev_default_loop_ptr = 1;
872	#endif	1014	#endif
873		1015
874	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
875		1017
876	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
877	{	1019	{
878	siginit (EV_A);	1020	siginit (EV_A);
879		1021
880	#ifndef WIN32	1022	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1027	#endif
886	}	1028	}
887	else	1029	else
888	default_loop = 0;	1030	ev_default_loop_ptr = 0;
889	}	1031	}
890		1032
891	return default_loop;	1033	return ev_default_loop_ptr;
892	}	1034	}
893		1035
894	void	1036	void
895	ev_default_destroy (void)	1037	ev_default_destroy (void)
896	{	1038	{
897	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1041	#endif
900		1042
901	#ifndef WIN32	1043	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
904	#endif	1046	#endif
905		1047
906	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
914		1056
915	void	1057	void
916	ev_default_fork (void)	1058	ev_default_fork (void)
917	{	1059	{
918	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1062	#endif
921		1063
922	if (method)	1064	if (backend)
923	postfork = 1;	1065	postfork = 1;
924	}	1066	}
925		1067
926	/*****************************************************************************/	1068	/*****************************************************************************/
927		1069
928	static int	1070	int inline_size
929	any_pending (EV_P)	1071	any_pending (EV_P)
930	{	1072	{
931	int pri;	1073	int pri;
932		1074
933	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
935	return 1;	1077	return 1;
936		1078
937	return 0;	1079	return 0;
938	}	1080	}
939		1081
940	static void	1082	void inline_speed
941	call_pending (EV_P)	1083	call_pending (EV_P)
942	{	1084	{
943	int pri;	1085	int pri;
944		1086
945	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
947	{	1089	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1091
950	if (p->w)	1092	if (expect_true (p->w))
951	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
952	p->w->pending = 0;	1096	p->w->pending = 0;
953	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
954	}	1098	}
955	}	1099	}
956	}	1100	}
957		1101
958	static void	1102	void inline_size
959	timers_reify (EV_P)	1103	timers_reify (EV_P)
960	{	1104	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1106	{
963	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
964		1108
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
966		1110
967	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
968	if (w->repeat)	1112	if (w->repeat)
969	{	1113	{
970	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1115
971	((WT)w)->at = mn_now + w->repeat;	1116	((WT)w)->at += w->repeat;
		1117	if (((WT)w)->at < mn_now)
		1118	((WT)w)->at = mn_now;
		1119
972	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
973	}	1121	}
974	else	1122	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1124
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1126	}
979	}	1127	}
980		1128
981	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
982	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
983	{	1132	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1134	{
986	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
987		1136
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
989		1138
990	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
992	{	1141	{
993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
994
995	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
997	}	1145	}
998	else if (w->interval)	1146	else if (w->interval)
999	{	1147	{
1000	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1001	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1002	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
1003	}	1151	}
1004	else	1152	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1154
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1156	}
1009	}	1157	}
1010		1158
1011	static void	1159	static void noinline
1012	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1013	{	1161	{
1014	int i;	1162	int i;
1015		1163
1016	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1018	{	1166	{
1019	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1020		1168
1021	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1171	else if (w->interval)
1024	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1025	}	1173	}
1026		1174
1027	/* now rebuild the heap */	1175	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1030	}	1178	}
		1179	#endif
1031		1180
1032	inline int	1181	int inline_size
1033	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1034	{	1183	{
1035	mn_now = get_clock ();	1184	mn_now = get_clock ();
1036		1185
1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038	{	1187	{
1039	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1040	return 0;	1189	return 0;
1041	}	1190	}
1042	else	1191	else
1043	{	1192	{
1044	now_floor = mn_now;	1193	now_floor = mn_now;
1045	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1046	return 1;	1195	return 1;
1047	}	1196	}
1048	}	1197	}
1049		1198
1050	static void	1199	void inline_size
1051	time_update (EV_P)	1200	time_update (EV_P)
1052	{	1201	{
1053	int i;	1202	int i;
1054		1203
1055	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1057	{	1206	{
1058	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1059	{	1208	{
1060	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1061		1210
1062	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
1063	{	1220	{
1064	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1065		1222
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1224	return; /* all is well */
1068		1225
1069	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1227	mn_now = get_clock ();
1071	now_floor = mn_now;	1228	now_floor = mn_now;
1072	}	1229	}
1073		1230
		1231	# if EV_PERIODIC_ENABLE
1074	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1077	}	1236	}
1078	}	1237	}
1079	else	1238	else
1080	#endif	1239	#endif
1081	{	1240	{
1082	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1083		1242
1084	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1085	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1087		1248
1088	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
1089	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1090	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1091	}	1252	}
1092		1253
1093	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1094	}	1255	}
1095	}	1256	}
1096		1257
1097	void	1258	void
1098	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1109	static int loop_done;	1270	static int loop_done;
1110		1271
1111	void	1272	void
1112	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1113	{	1274	{
1114	double block;
1115	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1116		1278
1117	do	1279	while (activecnt)
1118	{	1280	{
1119	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1120	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1121	{	1283	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1129		1291
1130	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1293	fd_reify (EV_A);
1132		1294
1133	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1134		1298
1135	/* we only need this for !monotonic clock or timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1136	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1137	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1140	else	1307	else
1141	#endif	1308	#endif
1142	{	1309	{
1143	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1144	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1145	}	1312	}
1146		1313
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1152		1315
1153	if (timercnt)	1316	if (timercnt)
1154	{	1317	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1319	if (block > to) block = to;
1157	}	1320	}
1158		1321
		1322	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1323	if (periodiccnt)
1160	{	1324	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1326	if (block > to) block = to;
1163	}	1327	}
		1328	#endif
1164		1329
1165	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1166	}	1331	}
1167		1332
1168	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1169		1335
1170	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1337	time_update (EV_A);
1172		1338
1173	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1176		1344
1177	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1346	if (idlecnt && !any_pending (EV_A))
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1180		1348
1181	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1350	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1352
1185	call_pending (EV_A);	1353	call_pending (EV_A);
1186	}
1187	while (activecnt && !loop_done);
1188		1354
1189	if (loop_done != 2)	1355	if (expect_false (loop_done))
1190	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1191	}	1361	}
1192		1362
1193	void	1363	void
1194	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1195	{	1365	{
1196	loop_done = how;	1366	loop_done = how;
1197	}	1367	}
1198		1368
1199	/*****************************************************************************/	1369	/*****************************************************************************/
1200		1370
1201	inline void	1371	void inline_size
1202	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1203	{	1373	{
1204	elem->next = *head;	1374	elem->next = *head;
1205	*head = elem;	1375	*head = elem;
1206	}	1376	}
1207		1377
1208	inline void	1378	void inline_size
1209	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1210	{	1380	{
1211	while (*head)	1381	while (*head)
1212	{	1382	{
1213	if (*head == elem)	1383	if (*head == elem)
…		…
1218		1388
1219	head = &(*head)->next;	1389	head = &(*head)->next;
1220	}	1390	}
1221	}	1391	}
1222		1392
1223	inline void	1393	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1225	{	1395	{
1226	if (w->pending)	1396	if (w->pending)
1227	{	1397	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1399	w->pending = 0;
1230	}	1400	}
1231	}	1401	}
1232		1402
1233	inline void	1403	void inline_speed
1234	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1235	{	1405	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238		1408
1239	w->active = active;	1409	w->active = active;
1240	ev_ref (EV_A);	1410	ev_ref (EV_A);
1241	}	1411	}
1242		1412
1243	inline void	1413	void inline_size
1244	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1245	{	1415	{
1246	ev_unref (EV_A);	1416	ev_unref (EV_A);
1247	w->active = 0;	1417	w->active = 0;
1248	}	1418	}
1249		1419
1250	/*****************************************************************************/	1420	/*****************************************************************************/
1251		1421
1252	void	1422	void
1253	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1254	{	1424	{
1255	int fd = w->fd;	1425	int fd = w->fd;
1256		1426
1257	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1258	return;	1428	return;
1259		1429
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1431
1262	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
…		…
1265		1435
1266	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1267	}	1437	}
1268		1438
1269	void	1439	void
1270	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1271	{	1441	{
1272	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1274	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1275		1447
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1278		1450
1279	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1280	}	1452	}
1281		1453
1282	void	1454	void
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1456	{
1285	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1286	return;	1458	return;
1287		1459
1288	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1289		1461
1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291		1463
1292	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1295	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1296		1468
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1298	}	1470	}
1299		1471
1300	void	1472	void
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1302	{	1474	{
1303	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1305	return;	1477	return;
1306		1478
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1308		1480
1309	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1310	{	1482	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1313	}	1485	}
1314		1486
1315	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1316		1488
1317	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1318	}	1490	}
1319		1491
1320	void	1492	void
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1494	{
1323	if (ev_is_active (w))	1495	if (ev_is_active (w))
1324	{	1496	{
1325	if (w->repeat)	1497	if (w->repeat)
1326	{	1498	{
1327	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1501	}
1330	else	1502	else
1331	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1332	}	1504	}
1333	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1335	}	1510	}
1336		1511
		1512	#if EV_PERIODIC_ENABLE
1337	void	1513	void
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1515	{
1340	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1341	return;	1517	return;
1342		1518
1343	if (w->reschedule_cb)	1519	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1521	else if (w->interval)
1346	{	1522	{
1347	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1348	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1349	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1350	}	1526	}
1351		1527
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1356		1532
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1358	}	1534	}
1359		1535
1360	void	1536	void
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1362	{	1538	{
1363	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1365	return;	1541	return;
1366		1542
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1368		1544
1369	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1370	{	1546	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1373	}	1549	}
1374		1550
1375	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1376	}	1552	}
1377		1553
1378	void	1554	void
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1556	{
		1557	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1558	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1559	ev_periodic_start (EV_A_ w);
1383	}	1560	}
1384		1561	#endif
1385	void
1386	ev_idle_start (EV_P_ struct ev_idle *w)
1387	{
1388	if (ev_is_active (w))
1389	return;
1390
1391	ev_start (EV_A_ (W)w, ++idlecnt);
1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1393	idles [idlecnt - 1] = w;
1394	}
1395
1396	void
1397	ev_idle_stop (EV_P_ struct ev_idle *w)
1398	{
1399	ev_clear_pending (EV_A_ (W)w);
1400	if (ev_is_active (w))
1401	return;
1402
1403	idles [((W)w)->active - 1] = idles [--idlecnt];
1404	ev_stop (EV_A_ (W)w);
1405	}
1406
1407	void
1408	ev_prepare_start (EV_P_ struct ev_prepare *w)
1409	{
1410	if (ev_is_active (w))
1411	return;
1412
1413	ev_start (EV_A_ (W)w, ++preparecnt);
1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1415	prepares [preparecnt - 1] = w;
1416	}
1417
1418	void
1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1420	{
1421	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))
1423	return;
1424
1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1426	ev_stop (EV_A_ (W)w);
1427	}
1428
1429	void
1430	ev_check_start (EV_P_ struct ev_check *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++checkcnt);
1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1437	checks [checkcnt - 1] = w;
1438	}
1439
1440	void
1441	ev_check_stop (EV_P_ struct ev_check *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	checks [((W)w)->active - 1] = checks [--checkcnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450		1562
1451	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1564	# define SA_RESTART 0
1453	#endif	1565	#endif
1454		1566
1455	void	1567	void
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1569	{
1458	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
1459	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1460	#endif	1572	#endif
1461	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1462	return;	1574	return;
1463		1575
1464	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1465		1577
1466	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1469		1581
1470	if (!((WL)w)->next)	1582	if (!((WL)w)->next)
1471	{	1583	{
1472	#if WIN32	1584	#if _WIN32
1473	signal (w->signum, sighandler);	1585	signal (w->signum, sighandler);
1474	#else	1586	#else
1475	struct sigaction sa;	1587	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
…		…
1480	#endif	1592	#endif
1481	}	1593	}
1482	}	1594	}
1483		1595
1484	void	1596	void
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1598	{
1487	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1489	return;	1601	return;
1490		1602
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1493		1605
1494	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1496	}	1608	}
1497		1609
1498	void	1610	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1500	{	1612	{
1501	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1502	assert (("child watchers are only supported in the default loop", loop == default_loop));	1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1615	#endif
1504	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1505	return;	1617	return;
1506		1618
1507	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1509	}	1621	}
1510		1622
1511	void	1623	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1513	{	1625	{
1514	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1516	return;	1628	return;
1517		1629
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1520	}	1632	}
1521		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# define lstat(a,b) stat(a,b)
		1638	# endif
		1639
		1640	#define DEF_STAT_INTERVAL 5.0074891
		1641	#define MIN_STAT_INTERVAL 0.1074891
		1642
		1643	void
		1644	ev_stat_stat (EV_P_ ev_stat *w)
		1645	{
		1646	if (lstat (w->path, &w->attr) < 0)
		1647	w->attr.st_nlink = 0;
		1648	else if (!w->attr.st_nlink)
		1649	w->attr.st_nlink = 1;
		1650	}
		1651
		1652	static void
		1653	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1654	{
		1655	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1656
		1657	/* we copy this here each the time so that */
		1658	/* prev has the old value when the callback gets invoked */
		1659	w->prev = w->attr;
		1660	ev_stat_stat (EV_A_ w);
		1661
		1662	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1663	ev_feed_event (EV_A_ w, EV_STAT);
		1664	}
		1665
		1666	void
		1667	ev_stat_start (EV_P_ ev_stat *w)
		1668	{
		1669	if (expect_false (ev_is_active (w)))
		1670	return;
		1671
		1672	/* since we use memcmp, we need to clear any padding data etc. */
		1673	memset (&w->prev, 0, sizeof (ev_statdata));
		1674	memset (&w->attr, 0, sizeof (ev_statdata));
		1675
		1676	ev_stat_stat (EV_A_ w);
		1677
		1678	if (w->interval < MIN_STAT_INTERVAL)
		1679	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1680
		1681	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1682	ev_set_priority (&w->timer, ev_priority (w));
		1683	ev_timer_start (EV_A_ &w->timer);
		1684
		1685	ev_start (EV_A_ (W)w, 1);
		1686	}
		1687
		1688	void
		1689	ev_stat_stop (EV_P_ ev_stat *w)
		1690	{
		1691	ev_clear_pending (EV_A_ (W)w);
		1692	if (expect_false (!ev_is_active (w)))
		1693	return;
		1694
		1695	ev_timer_stop (EV_A_ &w->timer);
		1696
		1697	ev_stop (EV_A_ (W)w);
		1698	}
		1699	#endif
		1700
		1701	void
		1702	ev_idle_start (EV_P_ ev_idle *w)
		1703	{
		1704	if (expect_false (ev_is_active (w)))
		1705	return;
		1706
		1707	ev_start (EV_A_ (W)w, ++idlecnt);
		1708	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1709	idles [idlecnt - 1] = w;
		1710	}
		1711
		1712	void
		1713	ev_idle_stop (EV_P_ ev_idle *w)
		1714	{
		1715	ev_clear_pending (EV_A_ (W)w);
		1716	if (expect_false (!ev_is_active (w)))
		1717	return;
		1718
		1719	{
		1720	int active = ((W)w)->active;
		1721	idles [active - 1] = idles [--idlecnt];
		1722	((W)idles [active - 1])->active = active;
		1723	}
		1724
		1725	ev_stop (EV_A_ (W)w);
		1726	}
		1727
		1728	void
		1729	ev_prepare_start (EV_P_ ev_prepare *w)
		1730	{
		1731	if (expect_false (ev_is_active (w)))
		1732	return;
		1733
		1734	ev_start (EV_A_ (W)w, ++preparecnt);
		1735	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1736	prepares [preparecnt - 1] = w;
		1737	}
		1738
		1739	void
		1740	ev_prepare_stop (EV_P_ ev_prepare *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	prepares [active - 1] = prepares [--preparecnt];
		1749	((W)prepares [active - 1])->active = active;
		1750	}
		1751
		1752	ev_stop (EV_A_ (W)w);
		1753	}
		1754
		1755	void
		1756	ev_check_start (EV_P_ ev_check *w)
		1757	{
		1758	if (expect_false (ev_is_active (w)))
		1759	return;
		1760
		1761	ev_start (EV_A_ (W)w, ++checkcnt);
		1762	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1763	checks [checkcnt - 1] = w;
		1764	}
		1765
		1766	void
		1767	ev_check_stop (EV_P_ ev_check *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	checks [active - 1] = checks [--checkcnt];
		1776	((W)checks [active - 1])->active = active;
		1777	}
		1778
		1779	ev_stop (EV_A_ (W)w);
		1780	}
		1781
		1782	#if EV_EMBED_ENABLE
		1783	void noinline
		1784	ev_embed_sweep (EV_P_ ev_embed *w)
		1785	{
		1786	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1787	}
		1788
		1789	static void
		1790	embed_cb (EV_P_ ev_io *io, int revents)
		1791	{
		1792	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1793
		1794	if (ev_cb (w))
		1795	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1796	else
		1797	ev_embed_sweep (loop, w);
		1798	}
		1799
		1800	void
		1801	ev_embed_start (EV_P_ ev_embed *w)
		1802	{
		1803	if (expect_false (ev_is_active (w)))
		1804	return;
		1805
		1806	{
		1807	struct ev_loop *loop = w->loop;
		1808	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1809	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1810	}
		1811
		1812	ev_set_priority (&w->io, ev_priority (w));
		1813	ev_io_start (EV_A_ &w->io);
		1814
		1815	ev_start (EV_A_ (W)w, 1);
		1816	}
		1817
		1818	void
		1819	ev_embed_stop (EV_P_ ev_embed *w)
		1820	{
		1821	ev_clear_pending (EV_A_ (W)w);
		1822	if (expect_false (!ev_is_active (w)))
		1823	return;
		1824
		1825	ev_io_stop (EV_A_ &w->io);
		1826
		1827	ev_stop (EV_A_ (W)w);
		1828	}
		1829	#endif
		1830
1522	/*****************************************************************************/	1831	/*****************************************************************************/
1523		1832
1524	struct ev_once	1833	struct ev_once
1525	{	1834	{
1526	struct ev_io io;	1835	ev_io io;
1527	struct ev_timer to;	1836	ev_timer to;
1528	void (*cb)(int revents, void *arg);	1837	void (*cb)(int revents, void *arg);
1529	void *arg;	1838	void *arg;
1530	};	1839	};
1531		1840
1532	static void	1841	static void
…		…
1541		1850
1542	cb (revents, arg);	1851	cb (revents, arg);
1543	}	1852	}
1544		1853
1545	static void	1854	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	1855	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	1856	{
1548	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1857	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1549	}	1858	}
1550		1859
1551	static void	1860	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1861	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	1862	{
1554	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1863	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1555	}	1864	}
1556		1865
1557	void	1866	void
1558	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1867	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1559	{	1868	{
1560	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1869	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561		1870
1562	if (!once)	1871	if (expect_false (!once))
		1872	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1873	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	1874	return;
1565	{	1875	}
		1876
1566	once->cb = cb;	1877	once->cb = cb;
1567	once->arg = arg;	1878	once->arg = arg;
1568		1879
1569	ev_watcher_init (&once->io, once_cb_io);	1880	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	1881	if (fd >= 0)
1571	{	1882	{
1572	ev_io_set (&once->io, fd, events);	1883	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	1884	ev_io_start (EV_A_ &once->io);
1574	}	1885	}
1575		1886
1576	ev_watcher_init (&once->to, once_cb_to);	1887	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	1888	if (timeout >= 0.)
1578	{	1889	{
1579	ev_timer_set (&once->to, timeout, 0.);	1890	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	1891	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	1892	}
1583	}	1893	}
1584		1894
		1895	#ifdef __cplusplus
		1896	}
		1897	#endif
		1898

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