[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#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) */
124	#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) */
125	#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 */
126	/#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 */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	200	#else
134	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
135	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
136	#endif	205	#endif
137		206
138	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
140		209
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
144	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
147		219
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		221
150	#if WIN32	222	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	224	#endif
155		225
156	/*****************************************************************************/	226	/*****************************************************************************/
157		227
158	static void (syserr_cb)(const char msg);	228	static void (syserr_cb)(const char msg);
…		…
206	typedef struct	276	typedef struct
207	{	277	{
208	WL head;	278	WL head;
209	unsigned char events;	279	unsigned char events;
210	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
211	} ANFD;	284	} ANFD;
212		285
213	typedef struct	286	typedef struct
214	{	287	{
215	W w;	288	W w;
216	int events;	289	int events;
217	} ANPENDING;	290	} ANPENDING;
218		291
219	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
220		293
221	struct ev_loop	294	struct ev_loop
222	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	299	#include "ev_vars.h"
225	};
226	# undef VAR	300	#undef VAR
		301	};
227	# include "ev_wrap.h"	302	#include "ev_wrap.h"
		303
		304	static struct ev_loop default_loop_struct;
		305	struct ev_loop *ev_default_loop_ptr;
228		306
229	#else	307	#else
230		308
		309	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	311	#include "ev_vars.h"
233	# undef VAR	312	#undef VAR
		313
		314	static int ev_default_loop_ptr;
234		315
235	#endif	316	#endif
236		317
237	/*****************************************************************************/	318	/*****************************************************************************/
238		319
239	inline ev_tstamp	320	ev_tstamp noinline
240	ev_time (void)	321	ev_time (void)
241	{	322	{
242	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
243	struct timespec ts;	324	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
248	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
249	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
250	#endif	331	#endif
251	}	332	}
252		333
253	inline ev_tstamp	334	ev_tstamp inline_size
254	get_clock (void)	335	get_clock (void)
255	{	336	{
256	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
257	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
258	{	339	{
…		…
263	#endif	344	#endif
264		345
265	return ev_time ();	346	return ev_time ();
266	}	347	}
267		348
		349	#if EV_MULTIPLICITY
268	ev_tstamp	350	ev_tstamp
269	ev_now (EV_P)	351	ev_now (EV_P)
270	{	352	{
271	return rt_now;	353	return ev_rt_now;
272	}	354	}
		355	#endif
273		356
274	#define array_roundsize(base,n) ((n) \| 4 & ~3)	357	#define array_roundsize(type,n) (((n) \| 4) & ~3)
275		358
276	#define array_needsize(base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
278	{ \	361	{ \
279	int newcnt = cur; \	362	int newcnt = cur; \
280	do \	363	do \
281	{ \	364	{ \
282	newcnt = array_roundsize (base, newcnt << 1); \	365	newcnt = array_roundsize (type, newcnt << 1); \
283	} \	366	} \
284	while ((cnt) > newcnt); \	367	while ((cnt) > newcnt); \
285	\	368	\
286	base = ev_realloc (base, sizeof (base) (newcnt)); \	369	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
287	init (base + cur, newcnt - cur); \	370	init (base + cur, newcnt - cur); \
288	cur = newcnt; \	371	cur = newcnt; \
289	}	372	}
290		373
291	#define array_slim(stem) \	374	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	376	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (base) (stem ## max)); \	378	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
297	}	380	}
298		381
299	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
300	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
301		384
302	/*****************************************************************************/	385	/*****************************************************************************/
303		386
304	static void	387	void inline_size
305	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
306	{	389	{
307	while (count--)	390	while (count--)
308	{	391	{
309	base->head = 0;	392	base->head = 0;
…		…
312		395
313	++base;	396	++base;
314	}	397	}
315	}	398	}
316		399
317	static void	400	void noinline
318	event (EV_P_ W w, int events)	401	ev_feed_event (EV_P_ void *w, int revents)
319	{	402	{
320	if (w->pending)	403	W w_ = (W)w;
		404
		405	if (expect_false (w_->pending))
321	{	406	{
322	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
323	return;	408	return;
324	}	409	}
325		410
326	w->pending = ++pendingcnt [ABSPRI (w)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
328	pendings [ABSPRI (w)][w->pending - 1].w = w;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
330	}	415	}
331		416
332	static void	417	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)	418	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{	419	{
335	int i;	420	int i;
336		421
337	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
339	}	424	}
340		425
341	static void	426	void inline_speed
342	fd_event (EV_P_ int fd, int events)	427	fd_event (EV_P_ int fd, int revents)
343	{	428	{
344	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	430	ev_io *w;
346		431
347	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	432	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
348	{	433	{
349	int ev = w->events & events;	434	int ev = w->events & revents;
350		435
351	if (ev)	436	if (ev)
352	event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
353	}	438	}
		439	}
		440
		441	void
		442	ev_feed_fd_event (EV_P_ int fd, int revents)
		443	{
		444	fd_event (EV_A_ fd, revents);
354	}	445	}
355		446
356	/*****************************************************************************/	447	/*****************************************************************************/
357		448
358	static void	449	void inline_size
359	fd_reify (EV_P)	450	fd_reify (EV_P)
360	{	451	{
361	int i;	452	int i;
362		453
363	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
364	{	455	{
365	int fd = fdchanges [i];	456	int fd = fdchanges [i];
366	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
367	struct ev_io *w;	458	ev_io *w;
368		459
369	int events = 0;	460	int events = 0;
370		461
371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	462	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
372	events \|= w->events;	463	events \|= w->events;
373		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
374	anfd->reify = 0;	474	anfd->reify = 0;
375		475
376	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	477	anfd->events = events;
378	}	478	}
379		479
380	fdchangecnt = 0;	480	fdchangecnt = 0;
381	}	481	}
382		482
383	static void	483	void inline_size
384	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
385	{	485	{
386	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
387	return;	487	return;
388		488
389	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
390		490
391	++fdchangecnt;	491	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
394	}	494	}
395		495
396	static void	496	void inline_speed
397	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
398	{	498	{
399	struct ev_io *w;	499	ev_io *w;
400		500
401	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
402	{	502	{
403	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
404	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
405	}	505	}
		506	}
		507
		508	int inline_size
		509	fd_valid (int fd)
		510	{
		511	#ifdef _WIN32
		512	return _get_osfhandle (fd) != -1;
		513	#else
		514	return fcntl (fd, F_GETFD) != -1;
		515	#endif
406	}	516	}
407		517
408	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
409	static void	519	static void noinline
410	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
411	{	521	{
412	int fd;	522	int fd;
413		523
414	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	525	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
418	}	528	}
419		529
420	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
421	static void	531	static void noinline
422	fd_enomem (EV_P)	532	fd_enomem (EV_P)
423	{	533	{
424	int fd;	534	int fd;
425		535
426	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
429	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
430	return;	540	return;
431	}	541	}
432	}	542	}
433		543
434	/* usually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
435	static void	545	static void noinline
436	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
437	{	547	{
438	int fd;	548	int fd;
439		549
440	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
446	}	556	}
447	}	557	}
448		558
449	/*****************************************************************************/	559	/*****************************************************************************/
450		560
451	static void	561	void inline_speed
452	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
453	{	563	{
454	WT w = heap [k];	564	WT w = heap [k];
455		565
456	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
463	heap [k] = w;	573	heap [k] = w;
464	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
465		575
466	}	576	}
467		577
468	static void	578	void inline_speed
469	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
470	{	580	{
471	WT w = heap [k];	581	WT w = heap [k];
472		582
473	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
487		597
488	heap [k] = w;	598	heap [k] = w;
489	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
490	}	600	}
491		601
		602	void inline_size
		603	adjustheap (WT *heap, int N, int k)
		604	{
		605	upheap (heap, k);
		606	downheap (heap, N, k);
		607	}
		608
492	/*****************************************************************************/	609	/*****************************************************************************/
493		610
494	typedef struct	611	typedef struct
495	{	612	{
496	WL head;	613	WL head;
…		…
500	static ANSIG *signals;	617	static ANSIG *signals;
501	static int signalmax;	618	static int signalmax;
502		619
503	static int sigpipe [2];	620	static int sigpipe [2];
504	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
505	static struct ev_io sigev;	622	static ev_io sigev;
506		623
507	static void	624	void inline_size
508	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
509	{	626	{
510	while (count--)	627	while (count--)
511	{	628	{
512	base->head = 0;	629	base->head = 0;
…		…
517	}	634	}
518		635
519	static void	636	static void
520	sighandler (int signum)	637	sighandler (int signum)
521	{	638	{
522	#if WIN32	639	#if _WIN32
523	signal (signum, sighandler);	640	signal (signum, sighandler);
524	#endif	641	#endif
525		642
526	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
527		644
…		…
532	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	650	errno = old_errno;
534	}	651	}
535	}	652	}
536		653
		654	void noinline
		655	ev_feed_signal_event (EV_P_ int signum)
		656	{
		657	WL w;
		658
		659	#if EV_MULTIPLICITY
		660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		661	#endif
		662
		663	--signum;
		664
		665	if (signum < 0 \|\| signum >= signalmax)
		666	return;
		667
		668	signals [signum].gotsig = 0;
		669
		670	for (w = signals [signum].head; w; w = w->next)
		671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		672	}
		673
537	static void	674	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
539	{	676	{
540	WL w;
541	int signum;	677	int signum;
542		678
543	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	680	gotsig = 0;
545		681
546	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
548	{	684	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;
550
551	for (w = signals [signum].head; w; w = w->next)
552	event (EV_A_ (W)w, EV_SIGNAL);
553	}
554	}	685	}
555		686
556	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
557	siginit (EV_P)	700	siginit (EV_P)
558	{	701	{
559	#ifndef WIN32	702	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		704
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	708	}
572		709
573	/*****************************************************************************/	710	/*****************************************************************************/
574		711
		712	static ev_child *childs [PID_HASHSIZE];
		713
575	#ifndef WIN32	714	#ifndef _WIN32
576		715
577	static struct ev_child *childs [PID_HASHSIZE];
578	static struct ev_signal childev;	716	static ev_signal childev;
579		717
580	#ifndef WCONTINUED	718	#ifndef WCONTINUED
581	# define WCONTINUED 0	719	# define WCONTINUED 0
582	#endif	720	#endif
583		721
584	static void	722	void inline_speed
585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
586	{	724	{
587	struct ev_child *w;	725	ev_child *w;
588		726
589	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	727	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
590	if (w->pid == pid \|\| !w->pid)	728	if (w->pid == pid \|\| !w->pid)
591	{	729	{
592	ev_priority (w) = ev_priority (sw); /* need to do it now */	730	ev_priority (w) = ev_priority (sw); /* need to do it now */
593	w->rpid = pid;	731	w->rpid = pid;
594	w->rstatus = status;	732	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
596	}	734	}
597	}	735	}
598		736
599	static void	737	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
601	{	739	{
602	int pid, status;	740	int pid, status;
603		741
604	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
605	{	743	{
606	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
607	event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		747
609	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
611	}	750	}
612	}	751	}
613		752
614	#endif	753	#endif
615		754
616	/*****************************************************************************/	755	/*****************************************************************************/
617		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
618	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
619	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
620	#endif	762	#endif
621	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
622	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
639	{	781	{
640	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
641	}	783	}
642		784
643	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
644	static int	786	int inline_size
645	enable_secure (void)	787	enable_secure (void)
646	{	788	{
647	#ifdef WIN32	789	#ifdef _WIN32
648	return 0;	790	return 0;
649	#else	791	#else
650	return getuid () != geteuid ()	792	return getuid () != geteuid ()
651	\|\| getgid () != getegid ();	793	\|\| getgid () != getegid ();
652	#endif	794	#endif
653	}	795	}
654		796
655	int	797	unsigned int
656	ev_method (EV_P)	798	ev_supported_backends (void)
657	{	799	{
658	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	\| EVBACKEND_KQUEUE
		834	\| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
659	}	841	}
660		842
661	static void	843	static void
662	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
663	{	845	{
664	if (!method)	846	if (!backend)
665	{	847	{
666	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
667	{	849	{
668	struct timespec ts;	850	struct timespec ts;
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	852	have_monotonic = 1;
671	}	853	}
672	#endif	854	#endif
673		855
674	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	857	mn_now = get_clock ();
676	now_floor = mn_now;	858	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
678		860
679	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
680	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else
683	methods = EVMETHOD_ANY;
684		865
685	method = 0;	866	if (!(flags & 0x0000ffffUL))
686	#if EV_USE_WIN32	867	flags \|= ev_recommended_backends ();
687	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
688	#endif	872	#endif
689	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
691	#endif	875	#endif
692	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
694	#endif	878	#endif
695	#if EV_USE_POLL	879	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
697	#endif	881	#endif
698	#if EV_USE_SELECT	882	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
700	#endif	884	#endif
701		885
702	ev_watcher_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
704	}	888	}
705	}	889	}
706		890
707	void	891	static void
708	loop_destroy (EV_P)	892	loop_destroy (EV_P)
709	{	893	{
710	int i;	894	int i;
711		895
712	#if EV_USE_WIN32	896	#if EV_USE_PORT
713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
714	#endif	898	#endif
715	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
717	#endif	901	#endif
718	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
720	#endif	904	#endif
721	#if EV_USE_POLL	905	#if EV_USE_POLL
722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
723	#endif	907	#endif
724	#if EV_USE_SELECT	908	#if EV_USE_SELECT
725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
726	#endif	910	#endif
727		911
728	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
729	array_free (pending, [i]);	913	array_free (pending, [i]);
730		914
		915	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	916	array_free (fdchange, EMPTY0);
732	array_free (timer, );	917	array_free (timer, EMPTY0);
		918	#if EV_PERIODIC_ENABLE
733	array_free (periodic, );	919	array_free (periodic, EMPTY0);
		920	#endif
734	array_free (idle, );	921	array_free (idle, EMPTY0);
735	array_free (prepare, );	922	array_free (prepare, EMPTY0);
736	array_free (check, );	923	array_free (check, EMPTY0);
737		924
738	method = 0;	925	backend = 0;
739	}	926	}
740		927
741	static void	928	static void
742	loop_fork (EV_P)	929	loop_fork (EV_P)
743	{	930	{
		931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
744	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
746	#endif
747	#if EV_USE_KQUEUE
748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
749	#endif	939	#endif
750		940
751	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
752	{	942	{
753	/* default loop */	943	/* default loop */
…		…
766	postfork = 0;	956	postfork = 0;
767	}	957	}
768		958
769	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
770	struct ev_loop *	960	struct ev_loop *
771	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
772	{	962	{
773	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	963	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
774		964
775	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
776		966
777	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
778		968
779	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
780	return loop;	970	return loop;
781		971
782	return 0;	972	return 0;
783	}	973	}
784		974
…		…
796	}	986	}
797		987
798	#endif	988	#endif
799		989
800	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
805	#else	993	#else
806	static int default_loop;
807
808	int	994	int
		995	ev_default_loop (unsigned int flags)
809	#endif	996	#endif
810	ev_default_loop (int methods)
811	{	997	{
812	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	999	if (pipe (sigpipe))
814	return 0;	1000	return 0;
815		1001
816	if (!default_loop)	1002	if (!ev_default_loop_ptr)
817	{	1003	{
818	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	1006	#else
821	default_loop = 1;	1007	ev_default_loop_ptr = 1;
822	#endif	1008	#endif
823		1009
824	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
825		1011
826	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
827	{	1013	{
828	siginit (EV_A);	1014	siginit (EV_A);
829		1015
830	#ifndef WIN32	1016	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	1021	#endif
836	}	1022	}
837	else	1023	else
838	default_loop = 0;	1024	ev_default_loop_ptr = 0;
839	}	1025	}
840		1026
841	return default_loop;	1027	return ev_default_loop_ptr;
842	}	1028	}
843		1029
844	void	1030	void
845	ev_default_destroy (void)	1031	ev_default_destroy (void)
846	{	1032	{
847	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1035	#endif
850		1036
		1037	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
		1040	#endif
853		1041
854	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	1043	ev_io_stop (EV_A_ &sigev);
856		1044
857	close (sigpipe [0]); sigpipe [0] = 0;	1045	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		1050
863	void	1051	void
864	ev_default_fork (void)	1052	ev_default_fork (void)
865	{	1053	{
866	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	1056	#endif
869		1057
870	if (method)	1058	if (backend)
871	postfork = 1;	1059	postfork = 1;
872	}	1060	}
873		1061
874	/*****************************************************************************/	1062	/*****************************************************************************/
875		1063
876	static void	1064	int inline_size
		1065	any_pending (EV_P)
		1066	{
		1067	int pri;
		1068
		1069	for (pri = NUMPRI; pri--; )
		1070	if (pendingcnt [pri])
		1071	return 1;
		1072
		1073	return 0;
		1074	}
		1075
		1076	void inline_speed
877	call_pending (EV_P)	1077	call_pending (EV_P)
878	{	1078	{
879	int pri;	1079	int pri;
880		1080
881	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
882	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
883	{	1083	{
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		1085
886	if (p->w)	1086	if (expect_true (p->w))
887	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
888	p->w->pending = 0;	1090	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
890	}	1092	}
891	}	1093	}
892	}	1094	}
893		1095
894	static void	1096	void inline_size
895	timers_reify (EV_P)	1097	timers_reify (EV_P)
896	{	1098	{
897	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
898	{	1100	{
899	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
900		1102
901	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
902		1104
903	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
904	if (w->repeat)	1106	if (w->repeat)
905	{	1107	{
906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
907	((WT)w)->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
908	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
909	}	1115	}
910	else	1116	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1118
913	event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1120	}
915	}	1121	}
916		1122
917	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
918	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
919	{	1126	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1128	{
922	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
923		1130
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
925		1132
926	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
927	if (w->interval)	1134	if (w->reschedule_cb)
928	{	1135	{
		1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1138	downheap ((WT *)periodics, periodiccnt, 0);
		1139	}
		1140	else if (w->interval)
		1141	{
929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
931	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1145	}
933	else	1146	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1148
936	event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1150	}
938	}	1151	}
939		1152
940	static void	1153	static void noinline
941	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
942	{	1155	{
943	int i;	1156	int i;
944		1157
945	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
947	{	1160	{
948	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
949		1162
		1163	if (w->reschedule_cb)
		1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1165	else if (w->interval)
951	{
952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
953
954	if (fabs (diff) >= 1e-4)
955	{
956	ev_periodic_stop (EV_A_ w);
957	ev_periodic_start (EV_A_ w);
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}
961	}
962	}	1167	}
963	}
964		1168
965	inline int	1169	/* now rebuild the heap */
		1170	for (i = periodiccnt >> 1; i--; )
		1171	downheap ((WT *)periodics, periodiccnt, i);
		1172	}
		1173	#endif
		1174
		1175	int inline_size
966	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
967	{	1177	{
968	mn_now = get_clock ();	1178	mn_now = get_clock ();
969		1179
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1181	{
972	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1183	return 0;
974	}	1184	}
975	else	1185	else
976	{	1186	{
977	now_floor = mn_now;	1187	now_floor = mn_now;
978	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
979	return 1;	1189	return 1;
980	}	1190	}
981	}	1191	}
982		1192
983	static void	1193	void inline_size
984	time_update (EV_P)	1194	time_update (EV_P)
985	{	1195	{
986	int i;	1196	int i;
987		1197
988	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
990	{	1200	{
991	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
992	{	1202	{
993	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
994		1204
995	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
996	{	1214	{
997	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
998		1216
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1218	return; /* all is well */
1001		1219
1002	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1221	mn_now = get_clock ();
1004	now_floor = mn_now;	1222	now_floor = mn_now;
1005	}	1223	}
1006		1224
		1225	# if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1230	}
1011	}	1231	}
1012	else	1232	else
1013	#endif	1233	#endif
1014	{	1234	{
1015	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1016		1236
1017	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1018	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
1019	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
1020		1242
1021	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
1022	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1246	}
1025		1247
1026	mn_now = rt_now;	1248	mn_now = ev_rt_now;
1027	}	1249	}
1028	}	1250	}
1029		1251
1030	void	1252	void
1031	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
1042	static int loop_done;	1264	static int loop_done;
1043		1265
1044	void	1266	void
1045	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1046	{	1268	{
1047	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1049		1272
1050	do	1273	while (activecnt)
1051	{	1274	{
1052	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1054	{	1277	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1062		1285
1063	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1287	fd_reify (EV_A);
1065		1288
1066	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1067		1292
1068	/* we only need this for !monotonic clockor timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1069	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
1070	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1073	else	1301	else
1074	#endif	1302	#endif
1075	{	1303	{
1076	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1305	mn_now = ev_rt_now;
1078	}	1306	}
1079		1307
1080	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1081	block = 0.;
1082	else
1083	{
1084	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1085		1309
1086	if (timercnt)	1310	if (timercnt)
1087	{	1311	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1089	if (block > to) block = to;	1313	if (block > to) block = to;
1090	}	1314	}
1091		1315
		1316	#if EV_PERIODIC_ENABLE
1092	if (periodiccnt)	1317	if (periodiccnt)
1093	{	1318	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1095	if (block > to) block = to;	1320	if (block > to) block = to;
1096	}	1321	}
		1322	#endif
1097		1323
1098	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1099	}	1325	}
1100		1326
1101	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1102		1329
1103	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1331	time_update (EV_A);
1105		1332
1106	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1108	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1109		1338
1110	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1111	if (!pendingcnt)	1340	if (idlecnt && !any_pending (EV_A))
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1113		1342
1114	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1344	if (expect_false (checkcnt))
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1346
1118	call_pending (EV_A);	1347	call_pending (EV_A);
1119	}
1120	while (activecnt && !loop_done);
1121		1348
1122	if (loop_done != 2)	1349	if (expect_false (loop_done))
1123	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1124	}	1355	}
1125		1356
1126	void	1357	void
1127	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1128	{	1359	{
1129	loop_done = how;	1360	loop_done = how;
1130	}	1361	}
1131		1362
1132	/*****************************************************************************/	1363	/*****************************************************************************/
1133		1364
1134	inline void	1365	void inline_size
1135	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1136	{	1367	{
1137	elem->next = *head;	1368	elem->next = *head;
1138	*head = elem;	1369	*head = elem;
1139	}	1370	}
1140		1371
1141	inline void	1372	void inline_size
1142	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1143	{	1374	{
1144	while (*head)	1375	while (*head)
1145	{	1376	{
1146	if (*head == elem)	1377	if (*head == elem)
…		…
1151		1382
1152	head = &(*head)->next;	1383	head = &(*head)->next;
1153	}	1384	}
1154	}	1385	}
1155		1386
1156	inline void	1387	void inline_speed
1157	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1158	{	1389	{
1159	if (w->pending)	1390	if (w->pending)
1160	{	1391	{
1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1162	w->pending = 0;	1393	w->pending = 0;
1163	}	1394	}
1164	}	1395	}
1165		1396
1166	inline void	1397	void inline_speed
1167	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1168	{	1399	{
1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1171		1402
1172	w->active = active;	1403	w->active = active;
1173	ev_ref (EV_A);	1404	ev_ref (EV_A);
1174	}	1405	}
1175		1406
1176	inline void	1407	void inline_size
1177	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1178	{	1409	{
1179	ev_unref (EV_A);	1410	ev_unref (EV_A);
1180	w->active = 0;	1411	w->active = 0;
1181	}	1412	}
1182		1413
1183	/*****************************************************************************/	1414	/*****************************************************************************/
1184		1415
1185	void	1416	void
1186	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1187	{	1418	{
1188	int fd = w->fd;	1419	int fd = w->fd;
1189		1420
1190	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1191	return;	1422	return;
1192		1423
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1425
1195	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1429
1199	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1200	}	1431	}
1201		1432
1202	void	1433	void
1203	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1204	{	1435	{
1205	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1207	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1208		1441
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1211		1444
1212	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1213	}	1446	}
1214		1447
1215	void	1448	void
1216	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1217	{	1450	{
1218	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1219	return;	1452	return;
1220		1453
1221	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1222		1455
1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1224		1457
1225	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1229		1462
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}	1464	}
1232		1465
1233	void	1466	void
1234	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1235	{	1468	{
1236	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1237	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1238	return;	1471	return;
1239		1472
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1241		1474
1242	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1243	{	1476	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1479	}
1247		1480
1248	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1249		1482
1250	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1251	}	1484	}
1252		1485
1253	void	1486	void
1254	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1255	{	1488	{
1256	if (ev_is_active (w))	1489	if (ev_is_active (w))
1257	{	1490	{
1258	if (w->repeat)	1491	if (w->repeat)
1259	{	1492	{
1260	((WT)w)->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1495	}
1263	else	1496	else
1264	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1265	}	1498	}
1266	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1268	}	1504	}
1269		1505
		1506	#if EV_PERIODIC_ENABLE
1270	void	1507	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1272	{	1509	{
1273	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1274	return;	1511	return;
1275		1512
		1513	if (w->reschedule_cb)
		1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1515	else if (w->interval)
		1516	{
1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1277
1278	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1279	if (w->interval)
1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1520	}
1281		1521
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1286		1526
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}	1528	}
1289		1529
1290	void	1530	void
1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1292	{	1532	{
1293	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1295	return;	1535	return;
1296		1536
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1298		1538
1299	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1300	{	1540	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1303	}	1543	}
1304		1544
1305	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1306	}	1546	}
1307		1547
1308	void	1548	void
		1549	ev_periodic_again (EV_P_ ev_periodic *w)
		1550	{
		1551	/* TODO: use adjustheap and recalculation */
		1552	ev_periodic_stop (EV_A_ w);
		1553	ev_periodic_start (EV_A_ w);
		1554	}
		1555	#endif
		1556
		1557	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1310	{	1559	{
1311	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1312	return;	1561	return;
1313		1562
1314	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1316	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1317	}	1566	}
1318		1567
1319	void	1568	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1321	{	1570	{
1322	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1324	return;	1573	return;
1325		1574
		1575	{
		1576	int active = ((W)w)->active;
1326	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1327	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1328	}	1582	}
1329		1583
1330	void	1584	void
1331	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1332	{	1586	{
1333	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1334	return;	1588	return;
1335		1589
1336	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1338	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1339	}	1593	}
1340		1594
1341	void	1595	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1343	{	1597	{
1344	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1346	return;	1600	return;
1347		1601
		1602	{
		1603	int active = ((W)w)->active;
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1349	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1350	}	1609	}
1351		1610
1352	void	1611	void
1353	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1354	{	1613	{
1355	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1356	return;	1615	return;
1357		1616
1358	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1360	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1361	}	1620	}
1362		1621
1363	void	1622	void
1364	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1365	{	1624	{
1366	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1368	return;	1627	return;
1369		1628
		1629	{
		1630	int active = ((W)w)->active;
1370	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1371	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1372	}	1636	}
1373		1637
1374	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1375	# define SA_RESTART 0	1639	# define SA_RESTART 0
1376	#endif	1640	#endif
1377		1641
1378	void	1642	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1380	{	1644	{
1381	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1383	#endif	1647	#endif
1384	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1385	return;	1649	return;
1386		1650
1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1388		1652
1389	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1656
1393	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1394	{	1658	{
1395	#if WIN32	1659	#if _WIN32
1396	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1397	#else	1661	#else
1398	struct sigaction sa;	1662	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1403	#endif	1667	#endif
1404	}	1668	}
1405	}	1669	}
1406		1670
1407	void	1671	void
1408	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1409	{	1673	{
1410	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1411	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1412	return;	1676	return;
1413		1677
1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1415	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1416		1680
1417	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1418	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1419	}	1683	}
1420		1684
1421	void	1685	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1423	{	1687	{
1424	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1425	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1426	#endif	1690	#endif
1427	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1428	return;	1692	return;
1429		1693
1430	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1432	}	1696	}
1433		1697
1434	void	1698	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1436	{	1700	{
1437	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1439	return;	1703	return;
1440		1704
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1443	}	1707	}
1444		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1445	/*****************************************************************************/	1819	/*****************************************************************************/
1446		1820
1447	struct ev_once	1821	struct ev_once
1448	{	1822	{
1449	struct ev_io io;	1823	ev_io io;
1450	struct ev_timer to;	1824	ev_timer to;
1451	void (cb)(int revents, void arg);	1825	void (cb)(int revents, void arg);
1452	void *arg;	1826	void *arg;
1453	};	1827	};
1454		1828
1455	static void	1829	static void
…		…
1464		1838
1465	cb (revents, arg);	1839	cb (revents, arg);
1466	}	1840	}
1467		1841
1468	static void	1842	static void
1469	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1470	{	1844	{
1471	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1472	}	1846	}
1473		1847
1474	static void	1848	static void
1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1476	{	1850	{
1477	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1478	}	1852	}
1479		1853
1480	void	1854	void
1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1482	{	1856	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1857	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1484		1858
1485	if (!once)	1859	if (expect_false (!once))
		1860	{
1486	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1861	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1487	else	1862	return;
1488	{	1863	}
		1864
1489	once->cb = cb;	1865	once->cb = cb;
1490	once->arg = arg;	1866	once->arg = arg;
1491		1867
1492	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	1869	if (fd >= 0)
1494	{	1870	{
1495	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1497	}	1873	}
1498		1874
1499	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	1876	if (timeout >= 0.)
1501	{	1877	{
1502	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1504	}
1505	}	1880	}
1506	}	1881	}
1507		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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Comparing libev/ev.c (file contents): Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs. Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC