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Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.149 by root, Tue Nov 27 19:23:31 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_REALTIME	157	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
		164	# else
		165	# define EV_PID_HASHSIZE 16
		166	# endif
99	#endif	167	#endif
100		168
101	/**/	169	/**/
102		170
103	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
111	#endif	179	#endif
112		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
113	/**/	185	/**/
114		186
115	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
116	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
117	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
118	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
119		190
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
120	#include "ev.h"	194	# include "ev.h"
		195	#endif
121		196
122	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
123	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
124	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
125	#else	207	#else
126	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
127	# define inline static	210	# define inline_size static
		211	# define noinline
128	#endif	212	#endif
129		213
130	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
132		216
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
135		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
136	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
139		226
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		228
		229	#ifdef _WIN32
		230	# include "ev_win32.c"
		231	#endif
		232
142	/*****************************************************************************/	233	/*****************************************************************************/
143		234
		235	static void (*syserr_cb)(const char *msg);
		236
		237	void
		238	ev_set_syserr_cb (void (*cb)(const char *msg))
		239	{
		240	syserr_cb = cb;
		241	}
		242
		243	static void noinline
		244	syserr (const char *msg)
		245	{
		246	if (!msg)
		247	msg = "(libev) system error";
		248
		249	if (syserr_cb)
		250	syserr_cb (msg);
		251	else
		252	{
		253	perror (msg);
		254	abort ();
		255	}
		256	}
		257
		258	static void *(*alloc)(void *ptr, long size);
		259
		260	void
		261	ev_set_allocator (void *(*cb)(void *ptr, long size))
		262	{
		263	alloc = cb;
		264	}
		265
		266	static void *
		267	ev_realloc (void *ptr, long size)
		268	{
		269	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		270
		271	if (!ptr && size)
		272	{
		273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		274	abort ();
		275	}
		276
		277	return ptr;
		278	}
		279
		280	#define ev_malloc(size) ev_realloc (0, (size))
		281	#define ev_free(ptr) ev_realloc ((ptr), 0)
		282
		283	/*****************************************************************************/
		284
144	typedef struct	285	typedef struct
145	{	286	{
146	struct ev_watcher_list *head;	287	WL head;
147	unsigned char events;	288	unsigned char events;
148	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
149	} ANFD;	293	} ANFD;
150		294
151	typedef struct	295	typedef struct
152	{	296	{
153	W w;	297	W w;
154	int events;	298	int events;
155	} ANPENDING;	299	} ANPENDING;
156		300
157	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
158		302
159	struct ev_loop	303	struct ev_loop
160	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	308	#include "ev_vars.h"
163	};
164	# undef VAR	309	#undef VAR
		310	};
165	# include "ev_wrap.h"	311	#include "ev_wrap.h"
		312
		313	static struct ev_loop default_loop_struct;
		314	struct ev_loop *ev_default_loop_ptr;
166		315
167	#else	316	#else
168		317
		318	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	320	#include "ev_vars.h"
171	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
172		324
173	#endif	325	#endif
174		326
175	/*****************************************************************************/	327	/*****************************************************************************/
176		328
177	inline ev_tstamp	329	ev_tstamp
178	ev_time (void)	330	ev_time (void)
179	{	331	{
180	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
181	struct timespec ts;	333	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	340	#endif
189	}	341	}
190		342
191	inline ev_tstamp	343	ev_tstamp inline_size
192	get_clock (void)	344	get_clock (void)
193	{	345	{
194	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
196	{	348	{
…		…
201	#endif	353	#endif
202		354
203	return ev_time ();	355	return ev_time ();
204	}	356	}
205		357
		358	#if EV_MULTIPLICITY
206	ev_tstamp	359	ev_tstamp
207	ev_now (EV_P)	360	ev_now (EV_P)
208	{	361	{
209	return rt_now;	362	return ev_rt_now;
210	}	363	}
		364	#endif
211		365
212	#define array_roundsize(base,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
213		367
214	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
216	{ \	370	{ \
217	int newcnt = cur; \	371	int newcnt = cur; \
218	do \	372	do \
219	{ \	373	{ \
220	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
221	} \	375	} \
222	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
223	\	377	\
224	base = realloc (base, sizeof (*base) * (newcnt)); \	378	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
225	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
226	cur = newcnt; \	380	cur = newcnt; \
227	}	381	}
		382
		383	#define array_slim(type,stem) \
		384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		385	{ \
		386	stem ## max = array_roundsize (stem ## cnt >> 1); \
		387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		389	}
		390
		391	#define array_free(stem, idx) \
		392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
228		393
229	/*****************************************************************************/	394	/*****************************************************************************/
230		395
231	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
232	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
233	{	426	{
234	while (count--)	427	while (count--)
235	{	428	{
236	base->head = 0;	429	base->head = 0;
…		…
239		432
240	++base;	433	++base;
241	}	434	}
242	}	435	}
243		436
244	static void	437	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
270	{	439	{
271	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	441	ev_io *w;
273		442
274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	443	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
275	{	444	{
276	int ev = w->events & events;	445	int ev = w->events & revents;
277		446
278	if (ev)	447	if (ev)
279	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
280	}	449	}
281	}	450	}
282		451
283	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
284		457
285	static void	458	void inline_size
286	fd_reify (EV_P)	459	fd_reify (EV_P)
287	{	460	{
288	int i;	461	int i;
289		462
290	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
291	{	464	{
292	int fd = fdchanges [i];	465	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	467	ev_io *w;
295		468
296	int events = 0;	469	int events = 0;
297		470
298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
299	events |= w->events;	472	events |= w->events;
300		473
		474	#if EV_SELECT_IS_WINSOCKET
		475	if (events)
		476	{
		477	unsigned long argp;
		478	anfd->handle = _get_osfhandle (fd);
		479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		480	}
		481	#endif
		482
301	anfd->reify = 0;	483	anfd->reify = 0;
302		484
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	486	anfd->events = events;
307	}
308	}	487	}
309		488
310	fdchangecnt = 0;	489	fdchangecnt = 0;
311	}	490	}
312		491
313	static void	492	void inline_size
314	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
315	{	494	{
316	if (anfds [fd].reify || fdchangecnt < 0)	495	if (expect_false (anfds [fd].reify))
317	return;	496	return;
318		497
319	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
320		499
321	++fdchangecnt;	500	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
324	}	503	}
325		504
326	static void	505	void inline_speed
327	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
328	{	507	{
329	struct ev_io *w;	508	ev_io *w;
330		509
331	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
332	{	511	{
333	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
335	}	514	}
		515	}
		516
		517	int inline_size
		518	fd_valid (int fd)
		519	{
		520	#ifdef _WIN32
		521	return _get_osfhandle (fd) != -1;
		522	#else
		523	return fcntl (fd, F_GETFD) != -1;
		524	#endif
336	}	525	}
337		526
338	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
339	static void	528	static void noinline
340	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
341	{	530	{
342	int fd;	531	int fd;
343		532
344	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	534	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
348	}	537	}
349		538
350	/* called on ENOMEM in select/poll to kill some fds and retry */	539	/* called on ENOMEM in select/poll to kill some fds and retry */
351	static void	540	static void noinline
352	fd_enomem (EV_P)	541	fd_enomem (EV_P)
353	{	542	{
354	int fd = anfdmax;	543	int fd;
355		544
356	while (fd--)	545	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	546	if (anfds [fd].events)
358	{	547	{
359	close (fd);
360	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
361	return;	549	return;
362	}	550	}
363	}	551	}
364		552
365	/* susually called after fork if method needs to re-arm all fds from scratch */	553	/* usually called after fork if backend needs to re-arm all fds from scratch */
366	static void	554	static void noinline
367	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
368	{	556	{
369	int fd;	557	int fd;
370		558
371	/* this should be highly optimised to not do anything but set a flag */	559	/* this should be highly optimised to not do anything but set a flag */
…		…
377	}	565	}
378	}	566	}
379		567
380	/*****************************************************************************/	568	/*****************************************************************************/
381		569
382	static void	570	void inline_speed
383	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
384	{	572	{
385	WT w = heap [k];	573	WT w = heap [k];
386		574
387	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
388	{	576	{
389	heap [k] = heap [k >> 1];	577	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	578	((W)heap [k])->active = k + 1;
391	k >>= 1;	579	k >>= 1;
392	}	580	}
393		581
394	heap [k] = w;	582	heap [k] = w;
395	heap [k]->active = k + 1;	583	((W)heap [k])->active = k + 1;
396		584
397	}	585	}
398		586
399	static void	587	void inline_speed
400	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
401	{	589	{
402	WT w = heap [k];	590	WT w = heap [k];
403		591
404	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
410		598
411	if (w->at <= heap [j]->at)	599	if (w->at <= heap [j]->at)
412	break;	600	break;
413		601
414	heap [k] = heap [j];	602	heap [k] = heap [j];
415	heap [k]->active = k + 1;	603	((W)heap [k])->active = k + 1;
416	k = j;	604	k = j;
417	}	605	}
418		606
419	heap [k] = w;	607	heap [k] = w;
420	heap [k]->active = k + 1;	608	((W)heap [k])->active = k + 1;
		609	}
		610
		611	void inline_size
		612	adjustheap (WT *heap, int N, int k)
		613	{
		614	upheap (heap, k);
		615	downheap (heap, N, k);
421	}	616	}
422		617
423	/*****************************************************************************/	618	/*****************************************************************************/
424		619
425	typedef struct	620	typedef struct
426	{	621	{
427	struct ev_watcher_list *head;	622	WL head;
428	sig_atomic_t volatile gotsig;	623	sig_atomic_t volatile gotsig;
429	} ANSIG;	624	} ANSIG;
430		625
431	static ANSIG *signals;	626	static ANSIG *signals;
432	static int signalmax;	627	static int signalmax;
433		628
434	static int sigpipe [2];	629	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	631	static ev_io sigev;
437		632
438	static void	633	void inline_size
439	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
440	{	635	{
441	while (count--)	636	while (count--)
442	{	637	{
443	base->head = 0;	638	base->head = 0;
…		…
448	}	643	}
449		644
450	static void	645	static void
451	sighandler (int signum)	646	sighandler (int signum)
452	{	647	{
		648	#if _WIN32
		649	signal (signum, sighandler);
		650	#endif
		651
453	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
454		653
455	if (!gotsig)	654	if (!gotsig)
456	{	655	{
457	int old_errno = errno;	656	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	659	errno = old_errno;
461	}	660	}
462	}	661	}
463		662
		663	void noinline
		664	ev_feed_signal_event (EV_P_ int signum)
		665	{
		666	WL w;
		667
		668	#if EV_MULTIPLICITY
		669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		670	#endif
		671
		672	--signum;
		673
		674	if (signum < 0 || signum >= signalmax)
		675	return;
		676
		677	signals [signum].gotsig = 0;
		678
		679	for (w = signals [signum].head; w; w = w->next)
		680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		681	}
		682
464	static void	683	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
466	{	685	{
467	struct ev_watcher_list *w;
468	int signum;	686	int signum;
469		687
470	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	689	gotsig = 0;
472		690
473	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
475	{	693	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	694	}
482		695
483	static void	696	void inline_size
		697	fd_intern (int fd)
		698	{
		699	#ifdef _WIN32
		700	int arg = 1;
		701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		702	#else
		703	fcntl (fd, F_SETFD, FD_CLOEXEC);
		704	fcntl (fd, F_SETFL, O_NONBLOCK);
		705	#endif
		706	}
		707
		708	static void noinline
484	siginit (EV_P)	709	siginit (EV_P)
485	{	710	{
486	#ifndef WIN32	711	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		713
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	717	}
499		718
500	/*****************************************************************************/	719	/*****************************************************************************/
501		720
		721	static ev_child *childs [EV_PID_HASHSIZE];
		722
502	#ifndef WIN32	723	#ifndef _WIN32
503		724
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	725	static ev_signal childev;
		726
		727	void inline_speed
		728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		729	{
		730	ev_child *w;
		731
		732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		733	if (w->pid == pid || !w->pid)
		734	{
		735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		736	w->rpid = pid;
		737	w->rstatus = status;
		738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		739	}
		740	}
506		741
507	#ifndef WCONTINUED	742	#ifndef WCONTINUED
508	# define WCONTINUED 0	743	# define WCONTINUED 0
509	#endif	744	#endif
510		745
511	static void	746	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
517	if (w->pid == pid || !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it *now* */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
528	{	748	{
529	int pid, status;	749	int pid, status;
530		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
532	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
533	/* make sure we are called again until all childs have been reaped */	758	/* make sure we are called again until all childs have been reaped */
		759	/* we need to do it this way so that the callback gets called before we continue */
534	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		761
536	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	764	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
538	}
539	}	765	}
540		766
541	#endif	767	#endif
542		768
543	/*****************************************************************************/	769	/*****************************************************************************/
544		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
545	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
547	#endif	776	#endif
548	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
566	{	795	{
567	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
568	}	797	}
569		798
570	/* return true if we are running with elevated privileges and should ignore env variables */	799	/* return true if we are running with elevated privileges and should ignore env variables */
571	static int	800	int inline_size
572	enable_secure (void)	801	enable_secure (void)
573	{	802	{
574	#ifdef WIN32	803	#ifdef _WIN32
575	return 0;	804	return 0;
576	#else	805	#else
577	return getuid () != geteuid ()	806	return getuid () != geteuid ()
578	|| getgid () != getegid ();	807	|| getgid () != getegid ();
579	#endif	808	#endif
580	}	809	}
581		810
582	int	811	unsigned int
583	ev_method (EV_P)	812	ev_supported_backends (void)
584	{	813	{
585	return method;	814	unsigned int flags = 0;
		815
		816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		817	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		818	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		819	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		820	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		821
		822	return flags;
		823	}
		824
		825	unsigned int
		826	ev_recommended_backends (void)
		827	{
		828	unsigned int flags = ev_supported_backends ();
		829
		830	#ifndef __NetBSD__
		831	/* kqueue is borked on everything but netbsd apparently */
		832	/* it usually doesn't work correctly on anything but sockets and pipes */
		833	flags &= ~EVBACKEND_KQUEUE;
		834	#endif
		835	#ifdef __APPLE__
		836	// flags &= ~EVBACKEND_KQUEUE; for documentation
		837	flags &= ~EVBACKEND_POLL;
		838	#endif
		839
		840	return flags;
		841	}
		842
		843	unsigned int
		844	ev_embeddable_backends (void)
		845	{
		846	return EVBACKEND_EPOLL
		847	| EVBACKEND_KQUEUE
		848	| EVBACKEND_PORT;
		849	}
		850
		851	unsigned int
		852	ev_backend (EV_P)
		853	{
		854	return backend;
586	}	855	}
587		856
588	static void	857	static void
589	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
590	{	859	{
591	if (!method)	860	if (!backend)
592	{	861	{
593	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
594	{	863	{
595	struct timespec ts;	864	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	866	have_monotonic = 1;
598	}	867	}
599	#endif	868	#endif
600		869
601	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	871	mn_now = get_clock ();
603	now_floor = mn_now;	872	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
605		874
606	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		879
612	method = 0;	880	if (!(flags & 0x0000ffffUL))
		881	flags |= ev_recommended_backends ();
		882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		886	#endif
613	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	889	#endif
616	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	892	#endif
619	#if EV_USE_POLL	893	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	895	#endif
622	#if EV_USE_SELECT	896	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	898	#endif
625	}
626	}
627		899
628	void	900	ev_init (&sigev, sigcb);
		901	ev_set_priority (&sigev, EV_MAXPRI);
		902	}
		903	}
		904
		905	static void
629	loop_destroy (EV_P)	906	loop_destroy (EV_P)
630	{	907	{
		908	int i;
		909
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		912	#endif
631	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	915	#endif
634	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	918	#endif
637	#if EV_USE_POLL	919	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	921	#endif
640	#if EV_USE_SELECT	922	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	924	#endif
643		925
644	method = 0;	926	for (i = NUMPRI; i--; )
645	/*TODO*/	927	array_free (pending, [i]);
646	}
647		928
648	void	929	/* have to use the microsoft-never-gets-it-right macro */
		930	array_free (fdchange, EMPTY0);
		931	array_free (timer, EMPTY0);
		932	#if EV_PERIODIC_ENABLE
		933	array_free (periodic, EMPTY0);
		934	#endif
		935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
		938
		939	backend = 0;
		940	}
		941
		942	static void
649	loop_fork (EV_P)	943	loop_fork (EV_P)
650	{	944	{
651	/*TODO*/	945	#if EV_USE_PORT
		946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		947	#endif
		948	#if EV_USE_KQUEUE
		949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		950	#endif
652	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	953	#endif
655	#if EV_USE_KQUEUE	954
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	955	if (ev_is_active (&sigev))
657	#endif	956	{
		957	/* default loop */
		958
		959	ev_ref (EV_A);
		960	ev_io_stop (EV_A_ &sigev);
		961	close (sigpipe [0]);
		962	close (sigpipe [1]);
		963
		964	while (pipe (sigpipe))
		965	syserr ("(libev) error creating pipe");
		966
		967	siginit (EV_A);
		968	}
		969
		970	postfork = 0;
658	}	971	}
659		972
660	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
661	struct ev_loop *	974	struct ev_loop *
662	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
663	{	976	{
664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	977	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
665		978
		979	memset (loop, 0, sizeof (struct ev_loop));
		980
666	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
667		982
668	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
669	return loop;	984	return loop;
670		985
671	return 0;	986	return 0;
672	}	987	}
673		988
674	void	989	void
675	ev_loop_destroy (EV_P)	990	ev_loop_destroy (EV_P)
676	{	991	{
677	loop_destroy (EV_A);	992	loop_destroy (EV_A);
678	free (loop);	993	ev_free (loop);
679	}	994	}
680		995
681	void	996	void
682	ev_loop_fork (EV_P)	997	ev_loop_fork (EV_P)
683	{	998	{
684	loop_fork (EV_A);	999	postfork = 1;
685	}	1000	}
686		1001
687	#endif	1002	#endif
688		1003
689	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
694	#else	1007	#else
695	static int default_loop;
696
697	int	1008	int
		1009	ev_default_loop (unsigned int flags)
698	#endif	1010	#endif
699	ev_default_loop (int methods)
700	{	1011	{
701	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
703	return 0;	1014	return 0;
704		1015
705	if (!default_loop)	1016	if (!ev_default_loop_ptr)
706	{	1017	{
707	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1020	#else
710	default_loop = 1;	1021	ev_default_loop_ptr = 1;
711	#endif	1022	#endif
712		1023
713	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
714		1025
715	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
716	{	1027	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1028	siginit (EV_A);
720		1029
721	#ifndef WIN32	1030	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1035	#endif
727	}	1036	}
728	else	1037	else
729	default_loop = 0;	1038	ev_default_loop_ptr = 0;
730	}	1039	}
731		1040
732	return default_loop;	1041	return ev_default_loop_ptr;
733	}	1042	}
734		1043
735	void	1044	void
736	ev_default_destroy (void)	1045	ev_default_destroy (void)
737	{	1046	{
738	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1049	#endif
741		1050
		1051	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
		1054	#endif
744		1055
745	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1057	ev_io_stop (EV_A_ &sigev);
747		1058
748	close (sigpipe [0]); sigpipe [0] = 0;	1059	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1064
754	void	1065	void
755	ev_default_fork (void)	1066	ev_default_fork (void)
756	{	1067	{
757	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1070	#endif
760		1071
761	loop_fork (EV_A);	1072	if (backend)
762		1073	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1074	}
771		1075
772	/*****************************************************************************/	1076	/*****************************************************************************/
773		1077
774	static void	1078	int inline_size
		1079	any_pending (EV_P)
		1080	{
		1081	int pri;
		1082
		1083	for (pri = NUMPRI; pri--; )
		1084	if (pendingcnt [pri])
		1085	return 1;
		1086
		1087	return 0;
		1088	}
		1089
		1090	void inline_speed
775	call_pending (EV_P)	1091	call_pending (EV_P)
776	{	1092	{
777	int pri;	1093	int pri;
778		1094
779	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
781	{	1097	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1099
784	if (p->w)	1100	if (expect_true (p->w))
785	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
786	p->w->pending = 0;	1104	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
788	}	1106	}
789	}	1107	}
790	}	1108	}
791		1109
792	static void	1110	void inline_size
793	timers_reify (EV_P)	1111	timers_reify (EV_P)
794	{	1112	{
795	while (timercnt && timers [0]->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1114	{
797	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
798		1116
799	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
800		1118
801	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
802	if (w->repeat)	1120	if (w->repeat)
803	{	1121	{
804	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1123
805	w->at = mn_now + w->repeat;	1124	((WT)w)->at += w->repeat;
		1125	if (((WT)w)->at < mn_now)
		1126	((WT)w)->at = mn_now;
		1127
806	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
807	}	1129	}
808	else	1130	else
809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
810		1132
811	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
812	}	1134	}
813	}	1135	}
814		1136
815	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
816	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
817	{	1140	{
818	while (periodiccnt && periodics [0]->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
819	{	1142	{
820	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
821		1144
822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
823		1146
824	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
825	if (w->interval)	1148	if (w->reschedule_cb)
826	{	1149	{
		1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1152	downheap ((WT *)periodics, periodiccnt, 0);
		1153	}
		1154	else if (w->interval)
		1155	{
827	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
829	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
830	}	1159	}
831	else	1160	else
832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
833		1162
834	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
835	}	1164	}
836	}	1165	}
837		1166
838	static void	1167	static void noinline
839	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
840	{	1169	{
841	int i;	1170	int i;
842		1171
843	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
844	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
845	{	1174	{
846	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
847		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
848	if (w->interval)	1179	else if (w->interval)
849	{
850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
851
852	if (fabs (diff) >= 1e-4)
853	{
854	ev_periodic_stop (EV_A_ w);
855	ev_periodic_start (EV_A_ w);
856
857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
858	}
859	}
860	}	1181	}
861	}
862		1182
863	inline int	1183	/* now rebuild the heap */
		1184	for (i = periodiccnt >> 1; i--; )
		1185	downheap ((WT *)periodics, periodiccnt, i);
		1186	}
		1187	#endif
		1188
		1189	int inline_size
864	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
865	{	1191	{
866	mn_now = get_clock ();	1192	mn_now = get_clock ();
867		1193
868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
869	{	1195	{
870	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
871	return 0;	1197	return 0;
872	}	1198	}
873	else	1199	else
874	{	1200	{
875	now_floor = mn_now;	1201	now_floor = mn_now;
876	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
877	return 1;	1203	return 1;
878	}	1204	}
879	}	1205	}
880		1206
881	static void	1207	void inline_size
882	time_update (EV_P)	1208	time_update (EV_P)
883	{	1209	{
884	int i;	1210	int i;
885		1211
886	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
888	{	1214	{
889	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
890	{	1216	{
891	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
892		1218
893	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1219	/* loop a few times, before making important decisions.
		1220	* on the choice of "4": one iteration isn't enough,
		1221	* in case we get preempted during the calls to
		1222	* ev_time and get_clock. a second call is almost guarenteed
		1223	* to succeed in that case, though. and looping a few more times
		1224	* doesn't hurt either as we only do this on time-jumps or
		1225	* in the unlikely event of getting preempted here.
		1226	*/
		1227	for (i = 4; --i; )
894	{	1228	{
895	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
896		1230
897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
898	return; /* all is well */	1232	return; /* all is well */
899		1233
900	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
901	mn_now = get_clock ();	1235	mn_now = get_clock ();
902	now_floor = mn_now;	1236	now_floor = mn_now;
903	}	1237	}
904		1238
		1239	# if EV_PERIODIC_ENABLE
905	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
906	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
908	}	1244	}
909	}	1245	}
910	else	1246	else
911	#endif	1247	#endif
912	{	1248	{
913	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
914		1250
915	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
916	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
918		1256
919	/* adjust timers. this is easy, as the offset is the same for all */	1257	/* adjust timers. this is easy, as the offset is the same for all */
920	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
921	timers [i]->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
922	}	1260	}
923		1261
924	mn_now = rt_now;	1262	mn_now = ev_rt_now;
925	}	1263	}
926	}	1264	}
927		1265
928	void	1266	void
929	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
940	static int loop_done;	1278	static int loop_done;
941		1279
942	void	1280	void
943	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
944	{	1282	{
945	double block;
946	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
947		1286
948	do	1287	while (activecnt)
949	{	1288	{
		1289	/* we might have forked, so reify kernel state if necessary */
		1290	#if EV_FORK_ENABLE
		1291	if (expect_false (postfork))
		1292	if (forkcnt)
		1293	{
		1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1295	call_pending (EV_A);
		1296	}
		1297	#endif
		1298
950	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
951	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
952	{	1301	{
953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
954	call_pending (EV_A);	1303	call_pending (EV_A);
955	}	1304	}
956		1305
		1306	/* we might have forked, so reify kernel state if necessary */
		1307	if (expect_false (postfork))
		1308	loop_fork (EV_A);
		1309
957	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
958	fd_reify (EV_A);	1311	fd_reify (EV_A);
959		1312
960	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
961		1316
962	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
963	always have timers, we just calculate it always */	1318	block = 0.; /* do not block at all */
		1319	else
		1320	{
		1321	/* update time to cancel out callback processing overhead */
964	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
965	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
966	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
967	else	1325	else
968	#endif	1326	#endif
969	{	1327	{
970	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
971	mn_now = rt_now;	1329	mn_now = ev_rt_now;
972	}	1330	}
973		1331
974	if (flags & EVLOOP_NONBLOCK || idlecnt)
975	block = 0.;
976	else
977	{
978	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
979		1333
980	if (timercnt)	1334	if (timercnt)
981	{	1335	{
982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
983	if (block > to) block = to;	1337	if (block > to) block = to;
984	}	1338	}
985		1339
		1340	#if EV_PERIODIC_ENABLE
986	if (periodiccnt)	1341	if (periodiccnt)
987	{	1342	{
988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
989	if (block > to) block = to;	1344	if (block > to) block = to;
990	}	1345	}
		1346	#endif
991		1347
992	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
993	}	1349	}
994		1350
995	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
996		1353
997	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
998	time_update (EV_A);	1355	time_update (EV_A);
999		1356
1000	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1001	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1002	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1003		1362
1004	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1005	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1007		1366
1008	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1009	if (checkcnt)	1368	if (expect_false (checkcnt))
1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1011		1370
1012	call_pending (EV_A);	1371	call_pending (EV_A);
1013	}
1014	while (activecnt && !loop_done);
1015		1372
1016	if (loop_done != 2)	1373	if (expect_false (loop_done))
1017	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1018	}	1379	}
1019		1380
1020	void	1381	void
1021	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1022	{	1383	{
1023	loop_done = how;	1384	loop_done = how;
1024	}	1385	}
1025		1386
1026	/*****************************************************************************/	1387	/*****************************************************************************/
1027		1388
1028	inline void	1389	void inline_size
1029	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1030	{	1391	{
1031	elem->next = *head;	1392	elem->next = *head;
1032	*head = elem;	1393	*head = elem;
1033	}	1394	}
1034		1395
1035	inline void	1396	void inline_size
1036	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1037	{	1398	{
1038	while (*head)	1399	while (*head)
1039	{	1400	{
1040	if (*head == elem)	1401	if (*head == elem)
…		…
1045		1406
1046	head = &(*head)->next;	1407	head = &(*head)->next;
1047	}	1408	}
1048	}	1409	}
1049		1410
1050	inline void	1411	void inline_speed
1051	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1052	{	1413	{
1053	if (w->pending)	1414	if (w->pending)
1054	{	1415	{
1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1056	w->pending = 0;	1417	w->pending = 0;
1057	}	1418	}
1058	}	1419	}
1059		1420
1060	inline void	1421	void inline_speed
1061	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1062	{	1423	{
1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1065		1426
1066	w->active = active;	1427	w->active = active;
1067	ev_ref (EV_A);	1428	ev_ref (EV_A);
1068	}	1429	}
1069		1430
1070	inline void	1431	void inline_size
1071	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1072	{	1433	{
1073	ev_unref (EV_A);	1434	ev_unref (EV_A);
1074	w->active = 0;	1435	w->active = 0;
1075	}	1436	}
1076		1437
1077	/*****************************************************************************/	1438	/*****************************************************************************/
1078		1439
1079	void	1440	void
1080	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1081	{	1442	{
1082	int fd = w->fd;	1443	int fd = w->fd;
1083		1444
1084	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1085	return;	1446	return;
1086		1447
1087	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1088		1449
1089	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1092		1453
1093	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1094	}	1455	}
1095		1456
1096	void	1457	void
1097	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1098	{	1459	{
1099	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1100	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1101	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1102		1465
1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1104	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1105		1468
1106	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1107	}	1470	}
1108		1471
1109	void	1472	void
1110	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1111	{	1474	{
1112	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1113	return;	1476	return;
1114		1477
1115	w->at += mn_now;	1478	((WT)w)->at += mn_now;
1116		1479
1117	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1118		1481
1119	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1120	array_needsize (timers, timermax, timercnt, );	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1121	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1122	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1123	}
1124		1486
		1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1488	}
		1489
1125	void	1490	void
1126	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1127	{	1492	{
1128	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1130	return;	1495	return;
1131		1496
		1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1498
1132	if (w->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1133	{	1500	{
1134	timers [w->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1135	downheap ((WT *)timers, timercnt, w->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1136	}	1503	}
1137		1504
1138	w->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1139		1506
1140	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1141	}	1508	}
1142		1509
1143	void	1510	void
1144	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1145	{	1512	{
1146	if (ev_is_active (w))	1513	if (ev_is_active (w))
1147	{	1514	{
1148	if (w->repeat)	1515	if (w->repeat)
1149	{	1516	{
1150	w->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1151	downheap ((WT *)timers, timercnt, w->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1519	}
1153	else	1520	else
1154	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1155	}	1522	}
1156	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1157	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1158	}	1528	}
1159		1529
		1530	#if EV_PERIODIC_ENABLE
1160	void	1531	void
1161	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1162	{	1533	{
1163	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1164	return;	1535	return;
1165		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1167
1168	/* this formula differs from the one in periodic_reify because we do not always round up */	1542	/* this formula differs from the one in periodic_reify because we do not always round up */
1169	if (w->interval)
1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1544	}
1171		1545
1172	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1173	array_needsize (periodics, periodicmax, periodiccnt, );	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1174	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1175	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1176	}
1177		1550
		1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1552	}
		1553
1178	void	1554	void
1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1180	{	1556	{
1181	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1182	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1183	return;	1559	return;
1184		1560
		1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1562
1185	if (w->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1186	{	1564	{
1187	periodics [w->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1189	}	1567	}
1190		1568
1191	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1192	}	1570	}
1193		1571
1194	void	1572	void
1195	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1196	{	1574	{
1197	if (ev_is_active (w))	1575	/* TODO: use adjustheap and recalculation */
1198	return;
1199
1200	ev_start (EV_A_ (W)w, ++idlecnt);
1201	array_needsize (idles, idlemax, idlecnt, );
1202	idles [idlecnt - 1] = w;
1203	}
1204
1205	void
1206	ev_idle_stop (EV_P_ struct ev_idle *w)
1207	{
1208	ev_clear_pending (EV_A_ (W)w);
1209	if (ev_is_active (w))
1210	return;
1211
1212	idles [w->active - 1] = idles [--idlecnt];
1213	ev_stop (EV_A_ (W)w);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1214	}	1578	}
1215		1579	#endif
1216	void
1217	ev_prepare_start (EV_P_ struct ev_prepare *w)
1218	{
1219	if (ev_is_active (w))
1220	return;
1221
1222	ev_start (EV_A_ (W)w, ++preparecnt);
1223	array_needsize (prepares, preparemax, preparecnt, );
1224	prepares [preparecnt - 1] = w;
1225	}
1226
1227	void
1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1229	{
1230	ev_clear_pending (EV_A_ (W)w);
1231	if (ev_is_active (w))
1232	return;
1233
1234	prepares [w->active - 1] = prepares [--preparecnt];
1235	ev_stop (EV_A_ (W)w);
1236	}
1237
1238	void
1239	ev_check_start (EV_P_ struct ev_check *w)
1240	{
1241	if (ev_is_active (w))
1242	return;
1243
1244	ev_start (EV_A_ (W)w, ++checkcnt);
1245	array_needsize (checks, checkmax, checkcnt, );
1246	checks [checkcnt - 1] = w;
1247	}
1248
1249	void
1250	ev_check_stop (EV_P_ struct ev_check *w)
1251	{
1252	ev_clear_pending (EV_A_ (W)w);
1253	if (ev_is_active (w))
1254	return;
1255
1256	checks [w->active - 1] = checks [--checkcnt];
1257	ev_stop (EV_A_ (W)w);
1258	}
1259		1580
1260	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1261	# define SA_RESTART 0	1582	# define SA_RESTART 0
1262	#endif	1583	#endif
1263		1584
1264	void	1585	void
1265	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1266	{	1587	{
1267	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1268	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1269	#endif	1590	#endif
1270	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1271	return;	1592	return;
1272		1593
1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1274		1595
1275	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1276	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1278		1599
1279	if (!w->next)	1600	if (!((WL)w)->next)
1280	{	1601	{
		1602	#if _WIN32
		1603	signal (w->signum, sighandler);
		1604	#else
1281	struct sigaction sa;	1605	struct sigaction sa;
1282	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1283	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1608	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1285	sigaction (w->signum, &sa, 0);	1609	sigaction (w->signum, &sa, 0);
		1610	#endif
1286	}	1611	}
1287	}	1612	}
1288		1613
1289	void	1614	void
1290	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1291	{	1616	{
1292	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1293	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1294	return;	1619	return;
1295		1620
1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1297	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1298		1623
1299	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1300	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1301	}	1626	}
1302		1627
1303	void	1628	void
1304	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1305	{	1630	{
1306	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1307	assert (("child watchers are only supported in the default loop", loop == default_loop));	1632	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1308	#endif	1633	#endif
1309	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1310	return;	1635	return;
1311		1636
1312	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1314	}	1639	}
1315		1640
1316	void	1641	void
1317	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1318	{	1643	{
1319	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1320	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1321	return;	1646	return;
1322		1647
1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1324	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1325	}	1650	}
1326		1651
		1652	#if EV_STAT_ENABLE
		1653
		1654	# ifdef _WIN32
		1655	# undef lstat
		1656	# define lstat(a,b) _stati64 (a,b)
		1657	# endif
		1658
		1659	#define DEF_STAT_INTERVAL 5.0074891
		1660	#define MIN_STAT_INTERVAL 0.1074891
		1661
		1662	void
		1663	ev_stat_stat (EV_P_ ev_stat *w)
		1664	{
		1665	if (lstat (w->path, &w->attr) < 0)
		1666	w->attr.st_nlink = 0;
		1667	else if (!w->attr.st_nlink)
		1668	w->attr.st_nlink = 1;
		1669	}
		1670
		1671	static void
		1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1673	{
		1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1675
		1676	/* we copy this here each the time so that */
		1677	/* prev has the old value when the callback gets invoked */
		1678	w->prev = w->attr;
		1679	ev_stat_stat (EV_A_ w);
		1680
		1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1682	ev_feed_event (EV_A_ w, EV_STAT);
		1683	}
		1684
		1685	void
		1686	ev_stat_start (EV_P_ ev_stat *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	/* since we use memcmp, we need to clear any padding data etc. */
		1692	memset (&w->prev, 0, sizeof (ev_statdata));
		1693	memset (&w->attr, 0, sizeof (ev_statdata));
		1694
		1695	ev_stat_stat (EV_A_ w);
		1696
		1697	if (w->interval < MIN_STAT_INTERVAL)
		1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1699
		1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1701	ev_set_priority (&w->timer, ev_priority (w));
		1702	ev_timer_start (EV_A_ &w->timer);
		1703
		1704	ev_start (EV_A_ (W)w, 1);
		1705	}
		1706
		1707	void
		1708	ev_stat_stop (EV_P_ ev_stat *w)
		1709	{
		1710	ev_clear_pending (EV_A_ (W)w);
		1711	if (expect_false (!ev_is_active (w)))
		1712	return;
		1713
		1714	ev_timer_stop (EV_A_ &w->timer);
		1715
		1716	ev_stop (EV_A_ (W)w);
		1717	}
		1718	#endif
		1719
		1720	void
		1721	ev_idle_start (EV_P_ ev_idle *w)
		1722	{
		1723	if (expect_false (ev_is_active (w)))
		1724	return;
		1725
		1726	ev_start (EV_A_ (W)w, ++idlecnt);
		1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1728	idles [idlecnt - 1] = w;
		1729	}
		1730
		1731	void
		1732	ev_idle_stop (EV_P_ ev_idle *w)
		1733	{
		1734	ev_clear_pending (EV_A_ (W)w);
		1735	if (expect_false (!ev_is_active (w)))
		1736	return;
		1737
		1738	{
		1739	int active = ((W)w)->active;
		1740	idles [active - 1] = idles [--idlecnt];
		1741	((W)idles [active - 1])->active = active;
		1742	}
		1743
		1744	ev_stop (EV_A_ (W)w);
		1745	}
		1746
		1747	void
		1748	ev_prepare_start (EV_P_ ev_prepare *w)
		1749	{
		1750	if (expect_false (ev_is_active (w)))
		1751	return;
		1752
		1753	ev_start (EV_A_ (W)w, ++preparecnt);
		1754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1755	prepares [preparecnt - 1] = w;
		1756	}
		1757
		1758	void
		1759	ev_prepare_stop (EV_P_ ev_prepare *w)
		1760	{
		1761	ev_clear_pending (EV_A_ (W)w);
		1762	if (expect_false (!ev_is_active (w)))
		1763	return;
		1764
		1765	{
		1766	int active = ((W)w)->active;
		1767	prepares [active - 1] = prepares [--preparecnt];
		1768	((W)prepares [active - 1])->active = active;
		1769	}
		1770
		1771	ev_stop (EV_A_ (W)w);
		1772	}
		1773
		1774	void
		1775	ev_check_start (EV_P_ ev_check *w)
		1776	{
		1777	if (expect_false (ev_is_active (w)))
		1778	return;
		1779
		1780	ev_start (EV_A_ (W)w, ++checkcnt);
		1781	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1782	checks [checkcnt - 1] = w;
		1783	}
		1784
		1785	void
		1786	ev_check_stop (EV_P_ ev_check *w)
		1787	{
		1788	ev_clear_pending (EV_A_ (W)w);
		1789	if (expect_false (!ev_is_active (w)))
		1790	return;
		1791
		1792	{
		1793	int active = ((W)w)->active;
		1794	checks [active - 1] = checks [--checkcnt];
		1795	((W)checks [active - 1])->active = active;
		1796	}
		1797
		1798	ev_stop (EV_A_ (W)w);
		1799	}
		1800
		1801	#if EV_EMBED_ENABLE
		1802	void noinline
		1803	ev_embed_sweep (EV_P_ ev_embed *w)
		1804	{
		1805	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1806	}
		1807
		1808	static void
		1809	embed_cb (EV_P_ ev_io *io, int revents)
		1810	{
		1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1812
		1813	if (ev_cb (w))
		1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1815	else
		1816	ev_embed_sweep (loop, w);
		1817	}
		1818
		1819	void
		1820	ev_embed_start (EV_P_ ev_embed *w)
		1821	{
		1822	if (expect_false (ev_is_active (w)))
		1823	return;
		1824
		1825	{
		1826	struct ev_loop *loop = w->loop;
		1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1829	}
		1830
		1831	ev_set_priority (&w->io, ev_priority (w));
		1832	ev_io_start (EV_A_ &w->io);
		1833
		1834	ev_start (EV_A_ (W)w, 1);
		1835	}
		1836
		1837	void
		1838	ev_embed_stop (EV_P_ ev_embed *w)
		1839	{
		1840	ev_clear_pending (EV_A_ (W)w);
		1841	if (expect_false (!ev_is_active (w)))
		1842	return;
		1843
		1844	ev_io_stop (EV_A_ &w->io);
		1845
		1846	ev_stop (EV_A_ (W)w);
		1847	}
		1848	#endif
		1849
		1850	#if EV_FORK_ENABLE
		1851	void
		1852	ev_fork_start (EV_P_ ev_fork *w)
		1853	{
		1854	if (expect_false (ev_is_active (w)))
		1855	return;
		1856
		1857	ev_start (EV_A_ (W)w, ++forkcnt);
		1858	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1859	forks [forkcnt - 1] = w;
		1860	}
		1861
		1862	void
		1863	ev_fork_stop (EV_P_ ev_fork *w)
		1864	{
		1865	ev_clear_pending (EV_A_ (W)w);
		1866	if (expect_false (!ev_is_active (w)))
		1867	return;
		1868
		1869	{
		1870	int active = ((W)w)->active;
		1871	forks [active - 1] = forks [--forkcnt];
		1872	((W)forks [active - 1])->active = active;
		1873	}
		1874
		1875	ev_stop (EV_A_ (W)w);
		1876	}
		1877	#endif
		1878
1327	/*****************************************************************************/	1879	/*****************************************************************************/
1328		1880
1329	struct ev_once	1881	struct ev_once
1330	{	1882	{
1331	struct ev_io io;	1883	ev_io io;
1332	struct ev_timer to;	1884	ev_timer to;
1333	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1334	void *arg;	1886	void *arg;
1335	};	1887	};
1336		1888
1337	static void	1889	static void
…		…
1340	void (*cb)(int revents, void *arg) = once->cb;	1892	void (*cb)(int revents, void *arg) = once->cb;
1341	void *arg = once->arg;	1893	void *arg = once->arg;
1342		1894
1343	ev_io_stop (EV_A_ &once->io);	1895	ev_io_stop (EV_A_ &once->io);
1344	ev_timer_stop (EV_A_ &once->to);	1896	ev_timer_stop (EV_A_ &once->to);
1345	free (once);	1897	ev_free (once);
1346		1898
1347	cb (revents, arg);	1899	cb (revents, arg);
1348	}	1900	}
1349		1901
1350	static void	1902	static void
1351	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1352	{	1904	{
1353	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1905	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1354	}	1906	}
1355		1907
1356	static void	1908	static void
1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1358	{	1910	{
1359	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1911	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1360	}	1912	}
1361		1913
1362	void	1914	void
1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1915	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1364	{	1916	{
1365	struct ev_once *once = malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1366		1918
1367	if (!once)	1919	if (expect_false (!once))
		1920	{
1368	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1369	else	1922	return;
1370	{	1923	}
		1924
1371	once->cb = cb;	1925	once->cb = cb;
1372	once->arg = arg;	1926	once->arg = arg;
1373		1927
1374	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1375	if (fd >= 0)	1929	if (fd >= 0)
1376	{	1930	{
1377	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1378	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1379	}	1933	}
1380		1934
1381	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1382	if (timeout >= 0.)	1936	if (timeout >= 0.)
1383	{	1937	{
1384	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1385	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1386	}
1387	}	1940	}
1388	}	1941	}
1389		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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