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Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 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)
		202	# define inline_speed static
142	# define inline static	203	# define inline_size 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;
…		…
222	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
223		295
224	struct ev_loop	296	struct ev_loop
225	{	297	{
226	ev_tstamp ev_rt_now;	298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
227	#define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
228	#include "ev_vars.h"	301	#include "ev_vars.h"
229	#undef VAR	302	#undef VAR
230	};	303	};
231	#include "ev_wrap.h"	304	#include "ev_wrap.h"
232		305
233	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
234	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
235		308
236	#else	309	#else
237		310
238	ev_tstamp ev_rt_now;	311	ev_tstamp ev_rt_now;
239	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
240	#include "ev_vars.h"	313	#include "ev_vars.h"
241	#undef VAR	314	#undef VAR
242		315
243	static int default_loop;	316	static int ev_default_loop_ptr;
244		317
245	#endif	318	#endif
246		319
247	/*****************************************************************************/	320	/*****************************************************************************/
248		321
249	inline ev_tstamp	322	ev_tstamp
250	ev_time (void)	323	ev_time (void)
251	{	324	{
252	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
253	struct timespec ts;	326	struct timespec ts;
254	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
258	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
259	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
260	#endif	333	#endif
261	}	334	}
262		335
263	inline ev_tstamp	336	ev_tstamp inline_size
264	get_clock (void)	337	get_clock (void)
265	{	338	{
266	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
267	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
268	{	341	{
…		…
281	{	354	{
282	return ev_rt_now;	355	return ev_rt_now;
283	}	356	}
284	#endif	357	#endif
285		358
286	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
287		360
288	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
289	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
290	{ \	363	{ \
291	int newcnt = cur; \	364	int newcnt = cur; \
…		…
306	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
307	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
309	}	382	}
310		383
311	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
312	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
313	#define array_free_microshit(stem) \
314	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
315
316	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
317	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;
318		386
319	/*****************************************************************************/	387	/*****************************************************************************/
320		388
321	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
322	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
323	{	419	{
324	while (count--)	420	while (count--)
325	{	421	{
326	base->head = 0;	422	base->head = 0;
…		…
329		425
330	++base;	426	++base;
331	}	427	}
332	}	428	}
333		429
334	void	430	void inline_speed
335	ev_feed_event (EV_P_ void *w, int revents)
336	{
337	W w_ = (W)w;
338
339	if (w_->pending)
340	{
341	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
342	return;
343	}
344
345	w_->pending = ++pendingcnt [ABSPRI (w_)];
346	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349	}
350
351	static void
352	queue_events (EV_P_ W *events, int eventcnt, int type)
353	{
354	int i;
355
356	for (i = 0; i < eventcnt; ++i)
357	ev_feed_event (EV_A_ events [i], type);
358	}
359
360	inline void
361	fd_event (EV_P_ int fd, int revents)	431	fd_event (EV_P_ int fd, int revents)
362	{	432	{
363	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	434	ev_io *w;
365		435
366	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)
367	{	437	{
368	int ev = w->events & revents;	438	int ev = w->events & revents;
369		439
370	if (ev)	440	if (ev)
371	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
376	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
377	{	447	{
378	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
379	}	449	}
380		450
381	/*****************************************************************************/	451	void inline_size
382
383	static void
384	fd_reify (EV_P)	452	fd_reify (EV_P)
385	{	453	{
386	int i;	454	int i;
387		455
388	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
389	{	457	{
390	int fd = fdchanges [i];	458	int fd = fdchanges [i];
391	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
392	struct ev_io *w;	460	ev_io *w;
393		461
394	int events = 0;	462	int events = 0;
395		463
396	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)
397	events |= w->events;	465	events |= w->events;
398		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
399	anfd->reify = 0;	476	anfd->reify = 0;
400		477
401	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
402	anfd->events = events;	479	anfd->events = events;
403	}	480	}
404		481
405	fdchangecnt = 0;	482	fdchangecnt = 0;
406	}	483	}
407		484
408	static void	485	void inline_size
409	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
410	{	487	{
411	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
412	return;	489	return;
413		490
414	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
415		492
416	++fdchangecnt;	493	++fdchangecnt;
417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
419	}	496	}
420		497
421	static void	498	void inline_speed
422	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
423	{	500	{
424	struct ev_io *w;	501	ev_io *w;
425		502
426	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
427	{	504	{
428	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
429	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);
430	}	507	}
431	}	508	}
432		509
433	static int	510	int inline_size
434	fd_valid (int fd)	511	fd_valid (int fd)
435	{	512	{
436	#ifdef WIN32	513	#ifdef _WIN32
437	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
438	#else	515	#else
439	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
440	#endif	517	#endif
441	}	518	}
442		519
443	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
444	static void	521	static void noinline
445	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
446	{	523	{
447	int fd;	524	int fd;
448		525
449	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
451	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
452	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
453	}	530	}
454		531
455	/* 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 */
456	static void	533	static void noinline
457	fd_enomem (EV_P)	534	fd_enomem (EV_P)
458	{	535	{
459	int fd;	536	int fd;
460		537
461	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
464	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
465	return;	542	return;
466	}	543	}
467	}	544	}
468		545
469	/* 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 */
470	static void	547	static void noinline
471	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
472	{	549	{
473	int fd;	550	int fd;
474		551
475	/* 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 */
…		…
481	}	558	}
482	}	559	}
483		560
484	/*****************************************************************************/	561	/*****************************************************************************/
485		562
486	static void	563	void inline_speed
487	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
488	{	565	{
489	WT w = heap [k];	566	WT w = heap [k];
490		567
491	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
498	heap [k] = w;	575	heap [k] = w;
499	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
500		577
501	}	578	}
502		579
503	static void	580	void inline_speed
504	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
505	{	582	{
506	WT w = heap [k];	583	WT w = heap [k];
507		584
508	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
522		599
523	heap [k] = w;	600	heap [k] = w;
524	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
525	}	602	}
526		603
527	inline void	604	void inline_size
528	adjustheap (WT *heap, int N, int k, ev_tstamp at)	605	adjustheap (WT *heap, int N, int k)
529	{	606	{
530	ev_tstamp old_at = heap [k]->at;	607	upheap (heap, k);
531	heap [k]->at = at;
532
533	if (old_at < at)
534	downheap (heap, N, k);	608	downheap (heap, N, k);
535	else
536	upheap (heap, k);
537	}	609	}
538		610
539	/*****************************************************************************/	611	/*****************************************************************************/
540		612
541	typedef struct	613	typedef struct
…		…
547	static ANSIG *signals;	619	static ANSIG *signals;
548	static int signalmax;	620	static int signalmax;
549		621
550	static int sigpipe [2];	622	static int sigpipe [2];
551	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
552	static struct ev_io sigev;	624	static ev_io sigev;
553		625
554	static void	626	void inline_size
555	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
556	{	628	{
557	while (count--)	629	while (count--)
558	{	630	{
559	base->head = 0;	631	base->head = 0;
…		…
564	}	636	}
565		637
566	static void	638	static void
567	sighandler (int signum)	639	sighandler (int signum)
568	{	640	{
569	#if WIN32	641	#if _WIN32
570	signal (signum, sighandler);	642	signal (signum, sighandler);
571	#endif	643	#endif
572		644
573	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
574		646
575	if (!gotsig)	647	if (!gotsig)
576	{	648	{
577	int old_errno = errno;	649	int old_errno = errno;
578	gotsig = 1;	650	gotsig = 1;
579	#ifdef WIN32
580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581	#else
582	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
583	#endif
584	errno = old_errno;	652	errno = old_errno;
585	}	653	}
586	}	654	}
587		655
588	void	656	void noinline
589	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
590	{	658	{
591	WL w;	659	WL w;
592		660
593	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
594	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));
595	#endif	663	#endif
596		664
597	--signum;	665	--signum;
598		666
599	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
604	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
605	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
606	}	674	}
607		675
608	static void	676	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
610	{	678	{
611	int signum;	679	int signum;
612		680
613	#ifdef WIN32
614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615	#else
616	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
617	#endif
618	gotsig = 0;	682	gotsig = 0;
619		683
620	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
621	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
622	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
623	}	687	}
624		688
625	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
626	siginit (EV_P)	702	siginit (EV_P)
627	{	703	{
628	#ifndef WIN32	704	fd_intern (sigpipe [0]);
629	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
630	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
631
632	/* rather than sort out wether we really need nb, set it */
633	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
634	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
635	#endif
636		706
637	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
638	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
639	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
640	}	710	}
641		711
642	/*****************************************************************************/	712	/*****************************************************************************/
643		713
644	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
645		715
646	#ifndef WIN32	716	#ifndef _WIN32
647		717
648	static struct ev_signal childev;	718	static ev_signal childev;
649		719
650	#ifndef WCONTINUED	720	void inline_speed
651	# define WCONTINUED 0
652	#endif
653
654	static void
655	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)
656	{	722	{
657	struct ev_child *w;	723	ev_child *w;
658		724
659	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)
660	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
661	{	727	{
662	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
663	w->rpid = pid;	729	w->rpid = pid;
664	w->rstatus = status;	730	w->rstatus = status;
665	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
666	}	732	}
667	}	733	}
668		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
669	static void	739	static void
670	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
671	{	741	{
672	int pid, status;	742	int pid, status;
673		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
674	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
675	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
676	/* 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 */
677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678		754
679	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
680	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 */
681	}
682	}	757	}
683		758
684	#endif	759	#endif
685		760
686	/*****************************************************************************/	761	/*****************************************************************************/
687		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
688	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
689	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
690	#endif	768	#endif
691	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
692	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
709	{	787	{
710	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
711	}	789	}
712		790
713	/* 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 */
714	static int	792	int inline_size
715	enable_secure (void)	793	enable_secure (void)
716	{	794	{
717	#ifdef WIN32	795	#ifdef _WIN32
718	return 0;	796	return 0;
719	#else	797	#else
720	return getuid () != geteuid ()	798	return getuid () != geteuid ()
721	|| getgid () != getegid ();	799	|| getgid () != getegid ();
722	#endif	800	#endif
723	}	801	}
724		802
725	int	803	unsigned int
726	ev_method (EV_P)	804	ev_supported_backends (void)
727	{	805	{
728	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;
729	}	847	}
730		848
731	static void	849	static void
732	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
733	{	851	{
734	if (!method)	852	if (!backend)
735	{	853	{
736	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
737	{	855	{
738	struct timespec ts;	856	struct timespec ts;
739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
744	ev_rt_now = ev_time ();	862	ev_rt_now = ev_time ();
745	mn_now = get_clock ();	863	mn_now = get_clock ();
746	now_floor = mn_now;	864	now_floor = mn_now;
747	rtmn_diff = ev_rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
748		866
749	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
750	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
751	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
752	else
753	methods = EVMETHOD_ANY;
754		871
755	method = 0;	872	if (!(flags & 0x0000ffffUL))
756	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
757	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);
758	#endif	878	#endif
759	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761	#endif	881	#endif
762	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764	#endif	884	#endif
765	#if EV_USE_POLL	885	#if EV_USE_POLL
766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767	#endif	887	#endif
768	#if EV_USE_SELECT	888	#if EV_USE_SELECT
769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770	#endif	890	#endif
771		891
772	ev_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
773	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
774	}	894	}
775	}	895	}
776		896
777	void	897	static void
778	loop_destroy (EV_P)	898	loop_destroy (EV_P)
779	{	899	{
780	int i;	900	int i;
781		901
782	#if EV_USE_WIN32	902	#if EV_USE_PORT
783	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
784	#endif	904	#endif
785	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787	#endif	907	#endif
788	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790	#endif	910	#endif
791	#if EV_USE_POLL	911	#if EV_USE_POLL
792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793	#endif	913	#endif
794	#if EV_USE_SELECT	914	#if EV_USE_SELECT
795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796	#endif	916	#endif
797		917
798	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
799	array_free (pending, [i]);	919	array_free (pending, [i]);
800		920
801	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
802	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
803	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
804	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
805	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
806	array_free_microshit (prepare);	926	#endif
807	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
808		930
809	method = 0;	931	backend = 0;
810	}	932	}
811		933
812	static void	934	static void
813	loop_fork (EV_P)	935	loop_fork (EV_P)
814	{	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
815	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
817	#endif
818	#if EV_USE_KQUEUE
819	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
820	#endif	945	#endif
821		946
822	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
823	{	948	{
824	/* default loop */	949	/* default loop */
…		…
837	postfork = 0;	962	postfork = 0;
838	}	963	}
839		964
840	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
841	struct ev_loop *	966	struct ev_loop *
842	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
843	{	968	{
844	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));
845		970
846	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
847		972
848	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
849		974
850	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
851	return loop;	976	return loop;
852		977
853	return 0;	978	return 0;
854	}	979	}
855		980
…		…
868		993
869	#endif	994	#endif
870		995
871	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
872	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
873	#else	999	#else
874	int	1000	int
		1001	ev_default_loop (unsigned int flags)
875	#endif	1002	#endif
876	ev_default_loop (int methods)
877	{	1003	{
878	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
879	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
880	return 0;	1006	return 0;
881		1007
882	if (!default_loop)	1008	if (!ev_default_loop_ptr)
883	{	1009	{
884	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886	#else	1012	#else
887	default_loop = 1;	1013	ev_default_loop_ptr = 1;
888	#endif	1014	#endif
889		1015
890	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
891		1017
892	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
893	{	1019	{
894	siginit (EV_A);	1020	siginit (EV_A);
895		1021
896	#ifndef WIN32	1022	#ifndef _WIN32
897	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
898	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
899	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
900	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
901	#endif	1027	#endif
902	}	1028	}
903	else	1029	else
904	default_loop = 0;	1030	ev_default_loop_ptr = 0;
905	}	1031	}
906		1032
907	return default_loop;	1033	return ev_default_loop_ptr;
908	}	1034	}
909		1035
910	void	1036	void
911	ev_default_destroy (void)	1037	ev_default_destroy (void)
912	{	1038	{
913	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1041	#endif
916		1042
917	#ifndef WIN32	1043	#ifndef _WIN32
918	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
919	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
920	#endif	1046	#endif
921		1047
922	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
930		1056
931	void	1057	void
932	ev_default_fork (void)	1058	ev_default_fork (void)
933	{	1059	{
934	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
935	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
936	#endif	1062	#endif
937		1063
938	if (method)	1064	if (backend)
939	postfork = 1;	1065	postfork = 1;
940	}	1066	}
941		1067
942	/*****************************************************************************/	1068	/*****************************************************************************/
943		1069
944	static int	1070	int inline_size
945	any_pending (EV_P)	1071	any_pending (EV_P)
946	{	1072	{
947	int pri;	1073	int pri;
948		1074
949	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
951	return 1;	1077	return 1;
952		1078
953	return 0;	1079	return 0;
954	}	1080	}
955		1081
956	static void	1082	void inline_speed
957	call_pending (EV_P)	1083	call_pending (EV_P)
958	{	1084	{
959	int pri;	1085	int pri;
960		1086
961	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
962	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
963	{	1089	{
964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965		1091
966	if (p->w)	1092	if (expect_true (p->w))
967	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
968	p->w->pending = 0;	1096	p->w->pending = 0;
969	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
970	}	1098	}
971	}	1099	}
972	}	1100	}
973		1101
974	static void	1102	void inline_size
975	timers_reify (EV_P)	1103	timers_reify (EV_P)
976	{	1104	{
977	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
978	{	1106	{
979	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
980		1108
981	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
982		1110
983	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
984	if (w->repeat)	1112	if (w->repeat)
985	{	1113	{
986	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
987	((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
988	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
989	}	1121	}
990	else	1122	else
991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992		1124
993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994	}	1126	}
995	}	1127	}
996		1128
997	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
998	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
999	{	1132	{
1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001	{	1134	{
1002	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
1003		1136
1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1005		1138
1006	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1007	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1008	{	1141	{
1009	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1010
1011	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1012	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1013	}	1145	}
1014	else if (w->interval)	1146	else if (w->interval)
1015	{	1147	{
…		…
1022		1154
1023	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1024	}	1156	}
1025	}	1157	}
1026		1158
1027	static void	1159	static void noinline
1028	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1029	{	1161	{
1030	int i;	1162	int i;
1031		1163
1032	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1033	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1034	{	1166	{
1035	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1036		1168
1037	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1039	else if (w->interval)	1171	else if (w->interval)
1040	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1042		1174
1043	/* now rebuild the heap */	1175	/* now rebuild the heap */
1044	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1045	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1046	}	1178	}
		1179	#endif
1047		1180
1048	inline int	1181	int inline_size
1049	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1050	{	1183	{
1051	mn_now = get_clock ();	1184	mn_now = get_clock ();
1052		1185
1053	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1061	ev_rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1062	return 1;	1195	return 1;
1063	}	1196	}
1064	}	1197	}
1065		1198
1066	static void	1199	void inline_size
1067	time_update (EV_P)	1200	time_update (EV_P)
1068	{	1201	{
1069	int i;	1202	int i;
1070		1203
1071	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1073	{	1206	{
1074	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1075	{	1208	{
1076	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1077		1210
1078	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; )
1079	{	1220	{
1080	rtmn_diff = ev_rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1081		1222
1082	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1083	return; /* all is well */	1224	return; /* all is well */
…		…
1085	ev_rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();	1227	mn_now = get_clock ();
1087	now_floor = mn_now;	1228	now_floor = mn_now;
1088	}	1229	}
1089		1230
		1231	# if EV_PERIODIC_ENABLE
1090	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1091	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1092	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093	}	1236	}
1094	}	1237	}
1095	else	1238	else
…		…
1097	{	1240	{
1098	ev_rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1099		1242
1100	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1101	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1102	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1103		1248
1104	/* 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 */
1105	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1106	((WT)timers [i])->at += ev_rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1107	}	1252	}
…		…
1125	static int loop_done;	1270	static int loop_done;
1126		1271
1127	void	1272	void
1128	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1129	{	1274	{
1130	double block;
1131	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1132		1278
1133	do	1279	while (activecnt)
1134	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	#if EV_FORK_ENABLE
		1283	if (expect_false (postfork))
		1284	if (forkcnt)
		1285	{
		1286	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1287	call_pending (EV_A);
		1288	}
		1289	#endif
		1290
1135	/* queue check watchers (and execute them) */	1291	/* queue check watchers (and execute them) */
1136	if (expect_false (preparecnt))	1292	if (expect_false (preparecnt))
1137	{	1293	{
1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1294	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1139	call_pending (EV_A);	1295	call_pending (EV_A);
…		…
1145		1301
1146	/* update fd-related kernel structures */	1302	/* update fd-related kernel structures */
1147	fd_reify (EV_A);	1303	fd_reify (EV_A);
1148		1304
1149	/* calculate blocking time */	1305	/* calculate blocking time */
		1306	{
		1307	double block;
1150		1308
1151	/* we only need this for !monotonic clock or timers, but as we basically	1309	if (flags & EVLOOP_NONBLOCK || idlecnt)
1152	always have timers, we just calculate it always */	1310	block = 0.; /* do not block at all */
		1311	else
		1312	{
		1313	/* update time to cancel out callback processing overhead */
1153	#if EV_USE_MONOTONIC	1314	#if EV_USE_MONOTONIC
1154	if (expect_true (have_monotonic))	1315	if (expect_true (have_monotonic))
1155	time_update_monotonic (EV_A);	1316	time_update_monotonic (EV_A);
1156	else	1317	else
1157	#endif	1318	#endif
1158	{	1319	{
1159	ev_rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
1160	mn_now = ev_rt_now;	1321	mn_now = ev_rt_now;
1161	}	1322	}
1162		1323
1163	if (flags & EVLOOP_NONBLOCK || idlecnt)
1164	block = 0.;
1165	else
1166	{
1167	block = MAX_BLOCKTIME;	1324	block = MAX_BLOCKTIME;
1168		1325
1169	if (timercnt)	1326	if (timercnt)
1170	{	1327	{
1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1328	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172	if (block > to) block = to;	1329	if (block > to) block = to;
1173	}	1330	}
1174		1331
		1332	#if EV_PERIODIC_ENABLE
1175	if (periodiccnt)	1333	if (periodiccnt)
1176	{	1334	{
1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1335	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178	if (block > to) block = to;	1336	if (block > to) block = to;
1179	}	1337	}
		1338	#endif
1180		1339
1181	if (block < 0.) block = 0.;	1340	if (expect_false (block < 0.)) block = 0.;
1182	}	1341	}
1183		1342
1184	method_poll (EV_A_ block);	1343	backend_poll (EV_A_ block);
		1344	}
1185		1345
1186	/* update ev_rt_now, do magic */	1346	/* update ev_rt_now, do magic */
1187	time_update (EV_A);	1347	time_update (EV_A);
1188		1348
1189	/* queue pending timers and reschedule them */	1349	/* queue pending timers and reschedule them */
1190	timers_reify (EV_A); /* relative timers called last */	1350	timers_reify (EV_A); /* relative timers called last */
		1351	#if EV_PERIODIC_ENABLE
1191	periodics_reify (EV_A); /* absolute timers called first */	1352	periodics_reify (EV_A); /* absolute timers called first */
		1353	#endif
1192		1354
1193	/* queue idle watchers unless io or timers are pending */	1355	/* queue idle watchers unless other events are pending */
1194	if (idlecnt && !any_pending (EV_A))	1356	if (idlecnt && !any_pending (EV_A))
1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1357	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1196		1358
1197	/* queue check watchers, to be executed first */	1359	/* queue check watchers, to be executed first */
1198	if (checkcnt)	1360	if (expect_false (checkcnt))
1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200		1362
1201	call_pending (EV_A);	1363	call_pending (EV_A);
1202	}
1203	while (activecnt && !loop_done);
1204		1364
1205	if (loop_done != 2)	1365	if (expect_false (loop_done))
1206	loop_done = 0;	1366	break;
		1367	}
		1368
		1369	if (loop_done == EVUNLOOP_ONE)
		1370	loop_done = EVUNLOOP_CANCEL;
1207	}	1371	}
1208		1372
1209	void	1373	void
1210	ev_unloop (EV_P_ int how)	1374	ev_unloop (EV_P_ int how)
1211	{	1375	{
1212	loop_done = how;	1376	loop_done = how;
1213	}	1377	}
1214		1378
1215	/*****************************************************************************/	1379	/*****************************************************************************/
1216		1380
1217	inline void	1381	void inline_size
1218	wlist_add (WL *head, WL elem)	1382	wlist_add (WL *head, WL elem)
1219	{	1383	{
1220	elem->next = *head;	1384	elem->next = *head;
1221	*head = elem;	1385	*head = elem;
1222	}	1386	}
1223		1387
1224	inline void	1388	void inline_size
1225	wlist_del (WL *head, WL elem)	1389	wlist_del (WL *head, WL elem)
1226	{	1390	{
1227	while (*head)	1391	while (*head)
1228	{	1392	{
1229	if (*head == elem)	1393	if (*head == elem)
…		…
1234		1398
1235	head = &(*head)->next;	1399	head = &(*head)->next;
1236	}	1400	}
1237	}	1401	}
1238		1402
1239	inline void	1403	void inline_speed
1240	ev_clear_pending (EV_P_ W w)	1404	ev_clear_pending (EV_P_ W w)
1241	{	1405	{
1242	if (w->pending)	1406	if (w->pending)
1243	{	1407	{
1244	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1408	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1245	w->pending = 0;	1409	w->pending = 0;
1246	}	1410	}
1247	}	1411	}
1248		1412
1249	inline void	1413	void inline_speed
1250	ev_start (EV_P_ W w, int active)	1414	ev_start (EV_P_ W w, int active)
1251	{	1415	{
1252	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1416	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1253	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1417	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1254		1418
1255	w->active = active;	1419	w->active = active;
1256	ev_ref (EV_A);	1420	ev_ref (EV_A);
1257	}	1421	}
1258		1422
1259	inline void	1423	void inline_size
1260	ev_stop (EV_P_ W w)	1424	ev_stop (EV_P_ W w)
1261	{	1425	{
1262	ev_unref (EV_A);	1426	ev_unref (EV_A);
1263	w->active = 0;	1427	w->active = 0;
1264	}	1428	}
1265		1429
1266	/*****************************************************************************/	1430	/*****************************************************************************/
1267		1431
1268	void	1432	void
1269	ev_io_start (EV_P_ struct ev_io *w)	1433	ev_io_start (EV_P_ ev_io *w)
1270	{	1434	{
1271	int fd = w->fd;	1435	int fd = w->fd;
1272		1436
1273	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1274	return;	1438	return;
1275		1439
1276	assert (("ev_io_start called with negative fd", fd >= 0));	1440	assert (("ev_io_start called with negative fd", fd >= 0));
1277		1441
1278	ev_start (EV_A_ (W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
…		…
1281		1445
1282	fd_change (EV_A_ fd);	1446	fd_change (EV_A_ fd);
1283	}	1447	}
1284		1448
1285	void	1449	void
1286	ev_io_stop (EV_P_ struct ev_io *w)	1450	ev_io_stop (EV_P_ ev_io *w)
1287	{	1451	{
1288	ev_clear_pending (EV_A_ (W)w);	1452	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1453	if (expect_false (!ev_is_active (w)))
1290	return;	1454	return;
		1455
		1456	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1291		1457
1292	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1458	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1459	ev_stop (EV_A_ (W)w);
1294		1460
1295	fd_change (EV_A_ w->fd);	1461	fd_change (EV_A_ w->fd);
1296	}	1462	}
1297		1463
1298	void	1464	void
1299	ev_timer_start (EV_P_ struct ev_timer *w)	1465	ev_timer_start (EV_P_ ev_timer *w)
1300	{	1466	{
1301	if (ev_is_active (w))	1467	if (expect_false (ev_is_active (w)))
1302	return;	1468	return;
1303		1469
1304	((WT)w)->at += mn_now;	1470	((WT)w)->at += mn_now;
1305		1471
1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1472	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307		1473
1308	ev_start (EV_A_ (W)w, ++timercnt);	1474	ev_start (EV_A_ (W)w, ++timercnt);
1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1475	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1310	timers [timercnt - 1] = w;	1476	timers [timercnt - 1] = w;
1311	upheap ((WT *)timers, timercnt - 1);	1477	upheap ((WT *)timers, timercnt - 1);
1312		1478
1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314	}	1480	}
1315		1481
1316	void	1482	void
1317	ev_timer_stop (EV_P_ struct ev_timer *w)	1483	ev_timer_stop (EV_P_ ev_timer *w)
1318	{	1484	{
1319	ev_clear_pending (EV_A_ (W)w);	1485	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))	1486	if (expect_false (!ev_is_active (w)))
1321	return;	1487	return;
1322		1488
1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1489	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1324		1490
1325	if (((W)w)->active < timercnt--)	1491	if (expect_true (((W)w)->active < timercnt--))
1326	{	1492	{
1327	timers [((W)w)->active - 1] = timers [timercnt];	1493	timers [((W)w)->active - 1] = timers [timercnt];
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1495	}
1330		1496
1331	((WT)w)->at = w->repeat;	1497	((WT)w)->at -= mn_now;
1332		1498
1333	ev_stop (EV_A_ (W)w);	1499	ev_stop (EV_A_ (W)w);
1334	}	1500	}
1335		1501
1336	void	1502	void
1337	ev_timer_again (EV_P_ struct ev_timer *w)	1503	ev_timer_again (EV_P_ ev_timer *w)
1338	{	1504	{
1339	if (ev_is_active (w))	1505	if (ev_is_active (w))
1340	{	1506	{
1341	if (w->repeat)	1507	if (w->repeat)
		1508	{
		1509	((WT)w)->at = mn_now + w->repeat;
1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1510	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1511	}
1343	else	1512	else
1344	ev_timer_stop (EV_A_ w);	1513	ev_timer_stop (EV_A_ w);
1345	}	1514	}
1346	else if (w->repeat)	1515	else if (w->repeat)
		1516	{
		1517	w->at = w->repeat;
1347	ev_timer_start (EV_A_ w);	1518	ev_timer_start (EV_A_ w);
		1519	}
1348	}	1520	}
1349		1521
		1522	#if EV_PERIODIC_ENABLE
1350	void	1523	void
1351	ev_periodic_start (EV_P_ struct ev_periodic *w)	1524	ev_periodic_start (EV_P_ ev_periodic *w)
1352	{	1525	{
1353	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1354	return;	1527	return;
1355		1528
1356	if (w->reschedule_cb)	1529	if (w->reschedule_cb)
1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1530	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358	else if (w->interval)	1531	else if (w->interval)
…		…
1361	/* this formula differs from the one in periodic_reify because we do not always round up */	1534	/* this formula differs from the one in periodic_reify because we do not always round up */
1362	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1535	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1363	}	1536	}
1364		1537
1365	ev_start (EV_A_ (W)w, ++periodiccnt);	1538	ev_start (EV_A_ (W)w, ++periodiccnt);
1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1539	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1367	periodics [periodiccnt - 1] = w;	1540	periodics [periodiccnt - 1] = w;
1368	upheap ((WT *)periodics, periodiccnt - 1);	1541	upheap ((WT *)periodics, periodiccnt - 1);
1369		1542
1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1371	}	1544	}
1372		1545
1373	void	1546	void
1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1547	ev_periodic_stop (EV_P_ ev_periodic *w)
1375	{	1548	{
1376	ev_clear_pending (EV_A_ (W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1377	if (!ev_is_active (w))	1550	if (expect_false (!ev_is_active (w)))
1378	return;	1551	return;
1379		1552
1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1553	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1381		1554
1382	if (((W)w)->active < periodiccnt--)	1555	if (expect_true (((W)w)->active < periodiccnt--))
1383	{	1556	{
1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1557	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1386	}	1559	}
1387		1560
1388	ev_stop (EV_A_ (W)w);	1561	ev_stop (EV_A_ (W)w);
1389	}	1562	}
1390		1563
1391	void	1564	void
1392	ev_periodic_again (EV_P_ struct ev_periodic *w)	1565	ev_periodic_again (EV_P_ ev_periodic *w)
1393	{	1566	{
1394	/* TODO: use adjustheap and recalculation */	1567	/* TODO: use adjustheap and recalculation */
1395	ev_periodic_stop (EV_A_ w);	1568	ev_periodic_stop (EV_A_ w);
1396	ev_periodic_start (EV_A_ w);	1569	ev_periodic_start (EV_A_ w);
1397	}	1570	}
1398		1571	#endif
1399	void
1400	ev_idle_start (EV_P_ struct ev_idle *w)
1401	{
1402	if (ev_is_active (w))
1403	return;
1404
1405	ev_start (EV_A_ (W)w, ++idlecnt);
1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1407	idles [idlecnt - 1] = w;
1408	}
1409
1410	void
1411	ev_idle_stop (EV_P_ struct ev_idle *w)
1412	{
1413	ev_clear_pending (EV_A_ (W)w);
1414	if (ev_is_active (w))
1415	return;
1416
1417	idles [((W)w)->active - 1] = idles [--idlecnt];
1418	ev_stop (EV_A_ (W)w);
1419	}
1420
1421	void
1422	ev_prepare_start (EV_P_ struct ev_prepare *w)
1423	{
1424	if (ev_is_active (w))
1425	return;
1426
1427	ev_start (EV_A_ (W)w, ++preparecnt);
1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1429	prepares [preparecnt - 1] = w;
1430	}
1431
1432	void
1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434	{
1435	ev_clear_pending (EV_A_ (W)w);
1436	if (ev_is_active (w))
1437	return;
1438
1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440	ev_stop (EV_A_ (W)w);
1441	}
1442
1443	void
1444	ev_check_start (EV_P_ struct ev_check *w)
1445	{
1446	if (ev_is_active (w))
1447	return;
1448
1449	ev_start (EV_A_ (W)w, ++checkcnt);
1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1451	checks [checkcnt - 1] = w;
1452	}
1453
1454	void
1455	ev_check_stop (EV_P_ struct ev_check *w)
1456	{
1457	ev_clear_pending (EV_A_ (W)w);
1458	if (ev_is_active (w))
1459	return;
1460
1461	checks [((W)w)->active - 1] = checks [--checkcnt];
1462	ev_stop (EV_A_ (W)w);
1463	}
1464		1572
1465	#ifndef SA_RESTART	1573	#ifndef SA_RESTART
1466	# define SA_RESTART 0	1574	# define SA_RESTART 0
1467	#endif	1575	#endif
1468		1576
1469	void	1577	void
1470	ev_signal_start (EV_P_ struct ev_signal *w)	1578	ev_signal_start (EV_P_ ev_signal *w)
1471	{	1579	{
1472	#if EV_MULTIPLICITY	1580	#if EV_MULTIPLICITY
1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1581	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474	#endif	1582	#endif
1475	if (ev_is_active (w))	1583	if (expect_false (ev_is_active (w)))
1476	return;	1584	return;
1477		1585
1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1586	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479		1587
1480	ev_start (EV_A_ (W)w, 1);	1588	ev_start (EV_A_ (W)w, 1);
1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1589	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1483		1591
1484	if (!((WL)w)->next)	1592	if (!((WL)w)->next)
1485	{	1593	{
1486	#if WIN32	1594	#if _WIN32
1487	signal (w->signum, sighandler);	1595	signal (w->signum, sighandler);
1488	#else	1596	#else
1489	struct sigaction sa;	1597	struct sigaction sa;
1490	sa.sa_handler = sighandler;	1598	sa.sa_handler = sighandler;
1491	sigfillset (&sa.sa_mask);	1599	sigfillset (&sa.sa_mask);
…		…
1494	#endif	1602	#endif
1495	}	1603	}
1496	}	1604	}
1497		1605
1498	void	1606	void
1499	ev_signal_stop (EV_P_ struct ev_signal *w)	1607	ev_signal_stop (EV_P_ ev_signal *w)
1500	{	1608	{
1501	ev_clear_pending (EV_A_ (W)w);	1609	ev_clear_pending (EV_A_ (W)w);
1502	if (!ev_is_active (w))	1610	if (expect_false (!ev_is_active (w)))
1503	return;	1611	return;
1504		1612
1505	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1613	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1506	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1507		1615
1508	if (!signals [w->signum - 1].head)	1616	if (!signals [w->signum - 1].head)
1509	signal (w->signum, SIG_DFL);	1617	signal (w->signum, SIG_DFL);
1510	}	1618	}
1511		1619
1512	void	1620	void
1513	ev_child_start (EV_P_ struct ev_child *w)	1621	ev_child_start (EV_P_ ev_child *w)
1514	{	1622	{
1515	#if EV_MULTIPLICITY	1623	#if EV_MULTIPLICITY
1516	assert (("child watchers are only supported in the default loop", loop == default_loop));	1624	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1625	#endif
1518	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1519	return;	1627	return;
1520		1628
1521	ev_start (EV_A_ (W)w, 1);	1629	ev_start (EV_A_ (W)w, 1);
1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1523	}	1631	}
1524		1632
1525	void	1633	void
1526	ev_child_stop (EV_P_ struct ev_child *w)	1634	ev_child_stop (EV_P_ ev_child *w)
1527	{	1635	{
1528	ev_clear_pending (EV_A_ (W)w);	1636	ev_clear_pending (EV_A_ (W)w);
1529	if (ev_is_active (w))	1637	if (expect_false (!ev_is_active (w)))
1530	return;	1638	return;
1531		1639
1532	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1640	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1533	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1534	}	1642	}
1535		1643
		1644	#if EV_STAT_ENABLE
		1645
		1646	# ifdef _WIN32
		1647	# undef lstat
		1648	# define lstat(a,b) _stati64 (a,b)
		1649	# endif
		1650
		1651	#define DEF_STAT_INTERVAL 5.0074891
		1652	#define MIN_STAT_INTERVAL 0.1074891
		1653
		1654	void
		1655	ev_stat_stat (EV_P_ ev_stat *w)
		1656	{
		1657	if (lstat (w->path, &w->attr) < 0)
		1658	w->attr.st_nlink = 0;
		1659	else if (!w->attr.st_nlink)
		1660	w->attr.st_nlink = 1;
		1661	}
		1662
		1663	static void
		1664	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1665	{
		1666	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1667
		1668	/* we copy this here each the time so that */
		1669	/* prev has the old value when the callback gets invoked */
		1670	w->prev = w->attr;
		1671	ev_stat_stat (EV_A_ w);
		1672
		1673	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1674	ev_feed_event (EV_A_ w, EV_STAT);
		1675	}
		1676
		1677	void
		1678	ev_stat_start (EV_P_ ev_stat *w)
		1679	{
		1680	if (expect_false (ev_is_active (w)))
		1681	return;
		1682
		1683	/* since we use memcmp, we need to clear any padding data etc. */
		1684	memset (&w->prev, 0, sizeof (ev_statdata));
		1685	memset (&w->attr, 0, sizeof (ev_statdata));
		1686
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (w->interval < MIN_STAT_INTERVAL)
		1690	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1691
		1692	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1693	ev_set_priority (&w->timer, ev_priority (w));
		1694	ev_timer_start (EV_A_ &w->timer);
		1695
		1696	ev_start (EV_A_ (W)w, 1);
		1697	}
		1698
		1699	void
		1700	ev_stat_stop (EV_P_ ev_stat *w)
		1701	{
		1702	ev_clear_pending (EV_A_ (W)w);
		1703	if (expect_false (!ev_is_active (w)))
		1704	return;
		1705
		1706	ev_timer_stop (EV_A_ &w->timer);
		1707
		1708	ev_stop (EV_A_ (W)w);
		1709	}
		1710	#endif
		1711
		1712	void
		1713	ev_idle_start (EV_P_ ev_idle *w)
		1714	{
		1715	if (expect_false (ev_is_active (w)))
		1716	return;
		1717
		1718	ev_start (EV_A_ (W)w, ++idlecnt);
		1719	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1720	idles [idlecnt - 1] = w;
		1721	}
		1722
		1723	void
		1724	ev_idle_stop (EV_P_ ev_idle *w)
		1725	{
		1726	ev_clear_pending (EV_A_ (W)w);
		1727	if (expect_false (!ev_is_active (w)))
		1728	return;
		1729
		1730	{
		1731	int active = ((W)w)->active;
		1732	idles [active - 1] = idles [--idlecnt];
		1733	((W)idles [active - 1])->active = active;
		1734	}
		1735
		1736	ev_stop (EV_A_ (W)w);
		1737	}
		1738
		1739	void
		1740	ev_prepare_start (EV_P_ ev_prepare *w)
		1741	{
		1742	if (expect_false (ev_is_active (w)))
		1743	return;
		1744
		1745	ev_start (EV_A_ (W)w, ++preparecnt);
		1746	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1747	prepares [preparecnt - 1] = w;
		1748	}
		1749
		1750	void
		1751	ev_prepare_stop (EV_P_ ev_prepare *w)
		1752	{
		1753	ev_clear_pending (EV_A_ (W)w);
		1754	if (expect_false (!ev_is_active (w)))
		1755	return;
		1756
		1757	{
		1758	int active = ((W)w)->active;
		1759	prepares [active - 1] = prepares [--preparecnt];
		1760	((W)prepares [active - 1])->active = active;
		1761	}
		1762
		1763	ev_stop (EV_A_ (W)w);
		1764	}
		1765
		1766	void
		1767	ev_check_start (EV_P_ ev_check *w)
		1768	{
		1769	if (expect_false (ev_is_active (w)))
		1770	return;
		1771
		1772	ev_start (EV_A_ (W)w, ++checkcnt);
		1773	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1774	checks [checkcnt - 1] = w;
		1775	}
		1776
		1777	void
		1778	ev_check_stop (EV_P_ ev_check *w)
		1779	{
		1780	ev_clear_pending (EV_A_ (W)w);
		1781	if (expect_false (!ev_is_active (w)))
		1782	return;
		1783
		1784	{
		1785	int active = ((W)w)->active;
		1786	checks [active - 1] = checks [--checkcnt];
		1787	((W)checks [active - 1])->active = active;
		1788	}
		1789
		1790	ev_stop (EV_A_ (W)w);
		1791	}
		1792
		1793	#if EV_EMBED_ENABLE
		1794	void noinline
		1795	ev_embed_sweep (EV_P_ ev_embed *w)
		1796	{
		1797	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1798	}
		1799
		1800	static void
		1801	embed_cb (EV_P_ ev_io *io, int revents)
		1802	{
		1803	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1804
		1805	if (ev_cb (w))
		1806	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1807	else
		1808	ev_embed_sweep (loop, w);
		1809	}
		1810
		1811	void
		1812	ev_embed_start (EV_P_ ev_embed *w)
		1813	{
		1814	if (expect_false (ev_is_active (w)))
		1815	return;
		1816
		1817	{
		1818	struct ev_loop *loop = w->loop;
		1819	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1820	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1821	}
		1822
		1823	ev_set_priority (&w->io, ev_priority (w));
		1824	ev_io_start (EV_A_ &w->io);
		1825
		1826	ev_start (EV_A_ (W)w, 1);
		1827	}
		1828
		1829	void
		1830	ev_embed_stop (EV_P_ ev_embed *w)
		1831	{
		1832	ev_clear_pending (EV_A_ (W)w);
		1833	if (expect_false (!ev_is_active (w)))
		1834	return;
		1835
		1836	ev_io_stop (EV_A_ &w->io);
		1837
		1838	ev_stop (EV_A_ (W)w);
		1839	}
		1840	#endif
		1841
		1842	#if EV_FORK_ENABLE
		1843	void
		1844	ev_fork_start (EV_P_ ev_fork *w)
		1845	{
		1846	if (expect_false (ev_is_active (w)))
		1847	return;
		1848
		1849	ev_start (EV_A_ (W)w, ++forkcnt);
		1850	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1851	forks [forkcnt - 1] = w;
		1852	}
		1853
		1854	void
		1855	ev_fork_stop (EV_P_ ev_fork *w)
		1856	{
		1857	ev_clear_pending (EV_A_ (W)w);
		1858	if (expect_false (!ev_is_active (w)))
		1859	return;
		1860
		1861	{
		1862	int active = ((W)w)->active;
		1863	forks [active - 1] = forks [--forkcnt];
		1864	((W)forks [active - 1])->active = active;
		1865	}
		1866
		1867	ev_stop (EV_A_ (W)w);
		1868	}
		1869	#endif
		1870
1536	/*****************************************************************************/	1871	/*****************************************************************************/
1537		1872
1538	struct ev_once	1873	struct ev_once
1539	{	1874	{
1540	struct ev_io io;	1875	ev_io io;
1541	struct ev_timer to;	1876	ev_timer to;
1542	void (*cb)(int revents, void *arg);	1877	void (*cb)(int revents, void *arg);
1543	void *arg;	1878	void *arg;
1544	};	1879	};
1545		1880
1546	static void	1881	static void
…		…
1555		1890
1556	cb (revents, arg);	1891	cb (revents, arg);
1557	}	1892	}
1558		1893
1559	static void	1894	static void
1560	once_cb_io (EV_P_ struct ev_io *w, int revents)	1895	once_cb_io (EV_P_ ev_io *w, int revents)
1561	{	1896	{
1562	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1897	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1563	}	1898	}
1564		1899
1565	static void	1900	static void
1566	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1901	once_cb_to (EV_P_ ev_timer *w, int revents)
1567	{	1902	{
1568	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1903	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1569	}	1904	}
1570		1905
1571	void	1906	void
1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1907	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1573	{	1908	{
1574	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1909	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1575		1910
1576	if (!once)	1911	if (expect_false (!once))
		1912	{
1577	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1913	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1578	else	1914	return;
1579	{	1915	}
		1916
1580	once->cb = cb;	1917	once->cb = cb;
1581	once->arg = arg;	1918	once->arg = arg;
1582		1919
1583	ev_init (&once->io, once_cb_io);	1920	ev_init (&once->io, once_cb_io);
1584	if (fd >= 0)	1921	if (fd >= 0)
1585	{	1922	{
1586	ev_io_set (&once->io, fd, events);	1923	ev_io_set (&once->io, fd, events);
1587	ev_io_start (EV_A_ &once->io);	1924	ev_io_start (EV_A_ &once->io);
1588	}	1925	}
1589		1926
1590	ev_init (&once->to, once_cb_to);	1927	ev_init (&once->to, once_cb_to);
1591	if (timeout >= 0.)	1928	if (timeout >= 0.)
1592	{	1929	{
1593	ev_timer_set (&once->to, timeout, 0.);	1930	ev_timer_set (&once->to, timeout, 0.);
1594	ev_timer_start (EV_A_ &once->to);	1931	ev_timer_start (EV_A_ &once->to);
1595	}
1596	}	1932	}
1597	}	1933	}
1598		1934
		1935	#ifdef __cplusplus
		1936	}
		1937	#endif
		1938

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