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

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		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
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
48	# 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
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# 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
77	#endif	167	#endif
78		168
79	/**/	169	/**/
80		170
81	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
89	#endif	179	#endif
90		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
91	/**/	185	/**/
92		186
93	#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) */
94	#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) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#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 */
97		190
98	#ifndef EV_EMBED	191	#ifdef EV_H
		192	# include EV_H
		193	#else
99	# include "ev.h"	194	# include "ev.h"
100	#endif	195	#endif
101		196
102	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
103	# 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
104	# 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
105	#else	207	#else
106	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
107	# define inline static	210	# define inline_size static
		211	# define noinline
108	#endif	212	#endif
109		213
110	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
111	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
112		216
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
116	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
119		226
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		228
		229	#ifdef _WIN32
		230	# include "ev_win32.c"
		231	#endif
		232
122	/*****************************************************************************/	233	/*****************************************************************************/
123		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, size_t size) = realloc;
		259
		260	void
		261	ev_set_allocator (void (cb)(void *ptr, size_t size))
		262	{
		263	alloc = cb;
		264	}
		265
		266	inline_speed void *
		267	ev_realloc (void *ptr, size_t size)
		268	{
		269	ptr = alloc (ptr, size);
		270
		271	if (!ptr && size)
		272	{
		273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)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
124	typedef struct	285	typedef struct
125	{	286	{
126	struct ev_watcher_list *head;	287	WL head;
127	unsigned char events;	288	unsigned char events;
128	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
129	} ANFD;	293	} ANFD;
130		294
131	typedef struct	295	typedef struct
132	{	296	{
133	W w;	297	W w;
134	int events;	298	int events;
135	} ANPENDING;	299	} ANPENDING;
136		300
137	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
138		302
139	struct ev_loop	303	struct ev_loop
140	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	308	#include "ev_vars.h"
143	};
144	# undef VAR	309	#undef VAR
		310	};
145	# 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;
146		315
147	#else	316	#else
148		317
		318	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	320	#include "ev_vars.h"
151	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
152		324
153	#endif	325	#endif
154		326
155	/*****************************************************************************/	327	/*****************************************************************************/
156		328
157	inline ev_tstamp	329	ev_tstamp
158	ev_time (void)	330	ev_time (void)
159	{	331	{
160	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
161	struct timespec ts;	333	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
166	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
167	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
168	#endif	340	#endif
169	}	341	}
170		342
171	inline ev_tstamp	343	ev_tstamp inline_size
172	get_clock (void)	344	get_clock (void)
173	{	345	{
174	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
175	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
176	{	348	{
…		…
181	#endif	353	#endif
182		354
183	return ev_time ();	355	return ev_time ();
184	}	356	}
185		357
		358	#if EV_MULTIPLICITY
186	ev_tstamp	359	ev_tstamp
187	ev_now (EV_P)	360	ev_now (EV_P)
188	{	361	{
189	return rt_now;	362	return ev_rt_now;
190	}	363	}
		364	#endif
191		365
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	366	#define array_roundsize(type,n) (((n) \| 4) & ~3)
193		367
194	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
196	{ \	370	{ \
197	int newcnt = cur; \	371	int newcnt = cur; \
198	do \	372	do \
199	{ \	373	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	375	} \
202	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
203	\	377	\
204	base = realloc (base, sizeof (base) (newcnt)); \	378	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	380	cur = newcnt; \
207	}	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;
208		393
209	/*****************************************************************************/	394	/*****************************************************************************/
210		395
211	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
212	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
213	{	426	{
214	while (count--)	427	while (count--)
215	{	428	{
216	base->head = 0;	429	base->head = 0;
…		…
219		432
220	++base;	433	++base;
221	}	434	}
222	}	435	}
223		436
224	static void	437	void inline_speed
225	event (EV_P_ W w, int events)
226	{
227	if (w->pending)
228	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
230	return;
231	}
232
233	w->pending = ++pendingcnt [ABSPRI (w)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
235	pendings [ABSPRI (w)][w->pending - 1].w = w;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;
237	}
238
239	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{
242	int i;
243
244	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);
246	}
247
248	static void
249	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
250	{	439	{
251	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	441	ev_io *w;
253		442
254	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)
255	{	444	{
256	int ev = w->events & events;	445	int ev = w->events & revents;
257		446
258	if (ev)	447	if (ev)
259	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
260	}	449	}
261	}	450	}
262		451
263	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
264		457
265	static void	458	void inline_size
266	fd_reify (EV_P)	459	fd_reify (EV_P)
267	{	460	{
268	int i;	461	int i;
269		462
270	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
271	{	464	{
272	int fd = fdchanges [i];	465	int fd = fdchanges [i];
273	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
274	struct ev_io *w;	467	ev_io *w;
275		468
276	int events = 0;	469	int events = 0;
277		470
278	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)
279	events \|= w->events;	472	events \|= w->events;
280		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
281	anfd->reify = 0;	483	anfd->reify = 0;
282		484
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	486	anfd->events = events;
287	}
288	}	487	}
289		488
290	fdchangecnt = 0;	489	fdchangecnt = 0;
291	}	490	}
292		491
293	static void	492	void inline_size
294	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
295	{	494	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	495	if (expect_false (anfds [fd].reify))
297	return;	496	return;
298		497
299	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
300		499
301	++fdchangecnt;	500	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
304	}	503	}
305		504
306	static void	505	void inline_speed
307	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
308	{	507	{
309	struct ev_io *w;	508	ev_io *w;
310		509
311	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
312	{	511	{
313	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
314	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);
315	}	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
316	}	525	}
317		526
318	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
319	static void	528	static void noinline
320	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
321	{	530	{
322	int fd;	531	int fd;
323		532
324	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	534	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
328	}	537	}
329		538
330	/* 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 */
331	static void	540	static void noinline
332	fd_enomem (EV_P)	541	fd_enomem (EV_P)
333	{	542	{
334	int fd = anfdmax;	543	int fd;
335		544
336	while (fd--)	545	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	546	if (anfds [fd].events)
338	{	547	{
339	close (fd);
340	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
341	return;	549	return;
342	}	550	}
343	}	551	}
344		552
345	/* 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 */
346	static void	554	static void noinline
347	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
348	{	556	{
349	int fd;	557	int fd;
350		558
351	/* 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 */
352	for (fd = 0; fd < anfdmax; ++fd)	560	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	561	if (anfds [fd].events)
354	{	562	{
355	anfds [fd].events = 0;	563	anfds [fd].events = 0;
356	fd_change (fd);	564	fd_change (EV_A_ fd);
357	}	565	}
358	}	566	}
359		567
360	/*****************************************************************************/	568	/*****************************************************************************/
361		569
362	static void	570	void inline_speed
363	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
364	{	572	{
365	WT w = heap [k];	573	WT w = heap [k];
366		574
367	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
368	{	576	{
369	heap [k] = heap [k >> 1];	577	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	578	((W)heap [k])->active = k + 1;
371	k >>= 1;	579	k >>= 1;
372	}	580	}
373		581
374	heap [k] = w;	582	heap [k] = w;
375	heap [k]->active = k + 1;	583	((W)heap [k])->active = k + 1;
376		584
377	}	585	}
378		586
379	static void	587	void inline_speed
380	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
381	{	589	{
382	WT w = heap [k];	590	WT w = heap [k];
383		591
384	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
390		598
391	if (w->at <= heap [j]->at)	599	if (w->at <= heap [j]->at)
392	break;	600	break;
393		601
394	heap [k] = heap [j];	602	heap [k] = heap [j];
395	heap [k]->active = k + 1;	603	((W)heap [k])->active = k + 1;
396	k = j;	604	k = j;
397	}	605	}
398		606
399	heap [k] = w;	607	heap [k] = w;
400	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);
401	}	616	}
402		617
403	/*****************************************************************************/	618	/*****************************************************************************/
404		619
405	typedef struct	620	typedef struct
406	{	621	{
407	struct ev_watcher_list *head;	622	WL head;
408	sig_atomic_t volatile gotsig;	623	sig_atomic_t volatile gotsig;
409	} ANSIG;	624	} ANSIG;
410		625
411	static ANSIG *signals;	626	static ANSIG *signals;
412	static int signalmax;	627	static int signalmax;
413		628
414	static int sigpipe [2];	629	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
		631	static ev_io sigev;
416		632
417	static void	633	void inline_size
418	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
419	{	635	{
420	while (count--)	636	while (count--)
421	{	637	{
422	base->head = 0;	638	base->head = 0;
…		…
427	}	643	}
428		644
429	static void	645	static void
430	sighandler (int signum)	646	sighandler (int signum)
431	{	647	{
		648	#if _WIN32
		649	signal (signum, sighandler);
		650	#endif
		651
432	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
433		653
434	if (!gotsig)	654	if (!gotsig)
435	{	655	{
436	int old_errno = errno;	656	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	659	errno = old_errno;
440	}	660	}
441	}	661	}
442		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
443	static void	683	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
445	{	685	{
446	struct ev_watcher_list *w;
447	int signum;	686	int signum;
448		687
449	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	689	gotsig = 0;
451		690
452	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
454	{	693	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;
456
457	for (w = signals [signum].head; w; w = w->next)
458	event (EV_A_ (W)w, EV_SIGNAL);
459	}
460	}	694	}
461		695
462	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
463	siginit (EV_P)	709	siginit (EV_P)
464	{	710	{
465	#ifndef WIN32	711	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		713
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	717	}
478		718
479	/*****************************************************************************/	719	/*****************************************************************************/
480		720
		721	static ev_child *childs [EV_PID_HASHSIZE];
		722
481	#ifndef WIN32	723	#ifndef _WIN32
		724
		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	}
482		741
483	#ifndef WCONTINUED	742	#ifndef WCONTINUED
484	# define WCONTINUED 0	743	# define WCONTINUED 0
485	#endif	744	#endif
486		745
487	static void	746	static void
488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
489	{
490	struct ev_child *w;
491
492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
493	if (w->pid == pid \|\| !w->pid)
494	{
495	w->priority = sw->priority; /* need to do it now */
496	w->rpid = pid;
497	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);
499	}
500	}
501
502	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
504	{	748	{
505	int pid, status;	749	int pid, status;
506		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	753	if (!WCONTINUED
		754	\|\| errno != EINVAL
		755	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		756	return;
		757
509	/* 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 */
510	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		761
512	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
513	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 */
514	}
515	}	765	}
516		766
517	#endif	767	#endif
518		768
519	/*****************************************************************************/	769	/*****************************************************************************/
520		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
521	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
522	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
523	#endif	776	#endif
524	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	778	# include "ev_epoll.c"
526	#endif	779	#endif
527	#if EV_USEV_POLL	780	#if EV_USE_POLL
528	# include "ev_poll.c"	781	# include "ev_poll.c"
529	#endif	782	#endif
530	#if EV_USE_SELECT	783	#if EV_USE_SELECT
531	# include "ev_select.c"	784	# include "ev_select.c"
532	#endif	785	#endif
…		…
542	{	795	{
543	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
544	}	797	}
545		798
546	/* 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 */
547	static int	800	int inline_size
548	enable_secure (void)	801	enable_secure (void)
549	{	802	{
550	#ifdef WIN32	803	#ifdef _WIN32
551	return 0;	804	return 0;
552	#else	805	#else
553	return getuid () != geteuid ()	806	return getuid () != geteuid ()
554	\|\| getgid () != getegid ();	807	\|\| getgid () != getegid ();
555	#endif	808	#endif
556	}	809	}
557		810
558	int	811	unsigned int
559	ev_method (EV_P)	812	ev_supported_backends (void)
560	{	813	{
561	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;
562	}	855	}
563		856
564	static void	857	static void
565	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
566	{	859	{
567	if (!method)	860	if (!backend)
568	{	861	{
569	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
570	{	863	{
571	struct timespec ts;	864	struct timespec ts;
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	866	have_monotonic = 1;
574	}	867	}
575	#endif	868	#endif
576		869
577	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	871	mn_now = get_clock ();
579	now_floor = mn_now;	872	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
581		874
582	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else
586	methods = EVMETHOD_ANY;
587		879
588	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
589	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591	#endif	889	#endif
592	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594	#endif	892	#endif
595	#if EV_USEV_POLL	893	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597	#endif	895	#endif
598	#if EV_USE_SELECT	896	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600	#endif	898	#endif
601	}
602	}
603		899
604	void	900	ev_init (&sigev, sigcb);
		901	ev_set_priority (&sigev, EV_MAXPRI);
		902	}
		903	}
		904
		905	static void
605	loop_destroy (EV_P)	906	loop_destroy (EV_P)
606	{	907	{
		908	int i;
		909
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		912	#endif
607	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609	#endif	915	#endif
610	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612	#endif	918	#endif
613	#if EV_USEV_POLL	919	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615	#endif	921	#endif
616	#if EV_USE_SELECT	922	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618	#endif	924	#endif
619		925
620	method = 0;	926	for (i = NUMPRI; i--; )
621	/TODO/	927	array_free (pending, [i]);
622	}
623		928
624	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
625	loop_fork (EV_P)	943	loop_fork (EV_P)
626	{	944	{
627	/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
628	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630	#endif	953	#endif
631	#if EV_USE_KQUEUE	954
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	955	if (ev_is_active (&sigev))
633	#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;
634	}	971	}
635		972
636	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
637	struct ev_loop *	974	struct ev_loop *
638	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
639	{	976	{
640	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));
641		978
		979	memset (loop, 0, sizeof (struct ev_loop));
		980
642	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
643		982
644	if (ev_methods (EV_A))	983	if (ev_backend (EV_A))
645	return loop;	984	return loop;
646		985
647	return 0;	986	return 0;
648	}	987	}
649		988
650	void	989	void
651	ev_loop_destroy (EV_P)	990	ev_loop_destroy (EV_P)
652	{	991	{
653	loop_destroy (EV_A);	992	loop_destroy (EV_A);
654	free (loop);	993	ev_free (loop);
655	}	994	}
656		995
657	void	996	void
658	ev_loop_fork (EV_P)	997	ev_loop_fork (EV_P)
659	{	998	{
660	loop_fork (EV_A);	999	postfork = 1;
661	}	1000	}
662		1001
663	#endif	1002	#endif
664		1003
665	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
670	#else	1007	#else
671	static int default_loop;
672
673	int	1008	int
		1009	ev_default_loop (unsigned int flags)
674	#endif	1010	#endif
675	ev_default_loop (int methods)
676	{	1011	{
677	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
679	return 0;	1014	return 0;
680		1015
681	if (!default_loop)	1016	if (!ev_default_loop_ptr)
682	{	1017	{
683	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
684	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685	#else	1020	#else
686	default_loop = 1;	1021	ev_default_loop_ptr = 1;
687	#endif	1022	#endif
688		1023
689	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
690		1025
691	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
692	{	1027	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	1028	siginit (EV_A);
696		1029
697	#ifndef WIN32	1030	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	1035	#endif
703	}	1036	}
704	else	1037	else
705	default_loop = 0;	1038	ev_default_loop_ptr = 0;
706	}	1039	}
707		1040
708	return default_loop;	1041	return ev_default_loop_ptr;
709	}	1042	}
710		1043
711	void	1044	void
712	ev_default_destroy (void)	1045	ev_default_destroy (void)
713	{	1046	{
714	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
716	#endif	1049	#endif
717		1050
		1051	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
		1054	#endif
720		1055
721	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	1057	ev_io_stop (EV_A_ &sigev);
723		1058
724	close (sigpipe [0]); sigpipe [0] = 0;	1059	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		1061
727	loop_destroy (EV_A);	1062	loop_destroy (EV_A);
728	}	1063	}
729		1064
730	void	1065	void
731	ev_default_fork (EV_P)	1066	ev_default_fork (void)
732	{	1067	{
733	loop_fork (EV_A);	1068	#if EV_MULTIPLICITY
		1069	struct ev_loop *loop = ev_default_loop_ptr;
		1070	#endif
734		1071
735	ev_io_stop (EV_A_ &sigev);	1072	if (backend)
736	close (sigpipe [0]);	1073	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	1074	}
743		1075
744	/*****************************************************************************/	1076	/*****************************************************************************/
745		1077
746	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
747	call_pending (EV_P)	1091	call_pending (EV_P)
748	{	1092	{
749	int pri;	1093	int pri;
750		1094
751	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
752	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
753	{	1097	{
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		1099
756	if (p->w)	1100	if (expect_true (p->w))
757	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
758	p->w->pending = 0;	1104	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
760	}	1106	}
761	}	1107	}
762	}	1108	}
763		1109
764	static void	1110	void inline_size
765	timers_reify (EV_P)	1111	timers_reify (EV_P)
766	{	1112	{
767	while (timercnt && timers [0]->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1114	{
769	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
		1116
		1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
770		1118
771	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
772	if (w->repeat)	1120	if (w->repeat)
773	{	1121	{
774	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
775	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
776	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
777	}	1129	}
778	else	1130	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1132
781	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1134	}
783	}	1135	}
784		1136
785	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
786	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
787	{	1140	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1142	{
790	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
		1144
		1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
791		1146
792	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
793	if (w->interval)	1148	if (w->reschedule_cb)
794	{	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	{
795	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;
796	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));
797	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1159	}
799	else	1160	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1162
802	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1164	}
804	}	1165	}
805		1166
806	static void	1167	static void noinline
807	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
808	{	1169	{
809	int i;	1170	int i;
810		1171
811	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
813	{	1174	{
814	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
815		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1179	else if (w->interval)
817	{
818	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;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1181	}
829	}
830		1182
831	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
832	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
833	{	1191	{
834	mn_now = get_clock ();	1192	mn_now = get_clock ();
835		1193
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1195	{
838	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1197	return 0;
840	}	1198	}
841	else	1199	else
842	{	1200	{
843	now_floor = mn_now;	1201	now_floor = mn_now;
844	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
845	return 1;	1203	return 1;
846	}	1204	}
847	}	1205	}
848		1206
849	static void	1207	void inline_size
850	time_update (EV_P)	1208	time_update (EV_P)
851	{	1209	{
852	int i;	1210	int i;
853		1211
854	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
856	{	1214	{
857	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
858	{	1216	{
859	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
860		1218
861	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; )
862	{	1228	{
863	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
864		1230
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1232	return; /* all is well */
867		1233
868	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1235	mn_now = get_clock ();
870	now_floor = mn_now;	1236	now_floor = mn_now;
871	}	1237	}
872		1238
		1239	# if EV_PERIODIC_ENABLE
873	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1244	}
877	}	1245	}
878	else	1246	else
879	#endif	1247	#endif
880	{	1248	{
881	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
882		1250
883	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))
884	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
885	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
886		1256
887	/* 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 */
888	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1260	}
891		1261
892	mn_now = rt_now;	1262	mn_now = ev_rt_now;
893	}	1263	}
894	}	1264	}
895		1265
896	void	1266	void
897	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
908	static int loop_done;	1278	static int loop_done;
909		1279
910	void	1280	void
911	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
912	{	1282	{
913	double block;
914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
915		1286
916	do	1287	while (activecnt)
917	{	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
918	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
919	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
920	{	1301	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1303	call_pending (EV_A);
923	}	1304	}
924		1305
		1306	/* we might have forked, so reify kernel state if necessary */
		1307	if (expect_false (postfork))
		1308	loop_fork (EV_A);
		1309
925	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1311	fd_reify (EV_A);
927		1312
928	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
929		1316
930	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
931	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 */
932	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
935	else	1325	else
936	#endif	1326	#endif
937	{	1327	{
938	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1329	mn_now = ev_rt_now;
940	}	1330	}
941		1331
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;
944	else
945	{
946	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
947		1333
948	if (timercnt)	1334	if (timercnt)
949	{	1335	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951	if (block > to) block = to;	1337	if (block > to) block = to;
952	}	1338	}
953		1339
		1340	#if EV_PERIODIC_ENABLE
954	if (periodiccnt)	1341	if (periodiccnt)
955	{	1342	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957	if (block > to) block = to;	1344	if (block > to) block = to;
958	}	1345	}
		1346	#endif
959		1347
960	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
961	}	1349	}
962		1350
963	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
964		1353
965	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1355	time_update (EV_A);
967		1356
968	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
970	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
971		1362
972	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
973	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1366
976	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
977	if (checkcnt)	1368	if (expect_false (checkcnt))
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1370
980	call_pending (EV_A);	1371	call_pending (EV_A);
981	}
982	while (activecnt && !loop_done);
983		1372
984	if (loop_done != 2)	1373	if (expect_false (loop_done))
985	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
986	}	1379	}
987		1380
988	void	1381	void
989	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
990	{	1383	{
991	loop_done = how;	1384	loop_done = how;
992	}	1385	}
993		1386
994	/*****************************************************************************/	1387	/*****************************************************************************/
995		1388
996	inline void	1389	void inline_size
997	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
998	{	1391	{
999	elem->next = *head;	1392	elem->next = *head;
1000	*head = elem;	1393	*head = elem;
1001	}	1394	}
1002		1395
1003	inline void	1396	void inline_size
1004	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1005	{	1398	{
1006	while (*head)	1399	while (*head)
1007	{	1400	{
1008	if (*head == elem)	1401	if (*head == elem)
…		…
1013		1406
1014	head = &(*head)->next;	1407	head = &(*head)->next;
1015	}	1408	}
1016	}	1409	}
1017		1410
1018	inline void	1411	void inline_speed
1019	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1020	{	1413	{
1021	if (w->pending)	1414	if (w->pending)
1022	{	1415	{
1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1024	w->pending = 0;	1417	w->pending = 0;
1025	}	1418	}
1026	}	1419	}
1027		1420
1028	inline void	1421	void inline_speed
1029	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1030	{	1423	{
1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1033		1426
1034	w->active = active;	1427	w->active = active;
1035	ev_ref (EV_A);	1428	ev_ref (EV_A);
1036	}	1429	}
1037		1430
1038	inline void	1431	void inline_size
1039	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1040	{	1433	{
1041	ev_unref (EV_A);	1434	ev_unref (EV_A);
1042	w->active = 0;	1435	w->active = 0;
1043	}	1436	}
1044		1437
1045	/*****************************************************************************/	1438	/*****************************************************************************/
1046		1439
1047	void	1440	void
1048	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1049	{	1442	{
1050	int fd = w->fd;	1443	int fd = w->fd;
1051		1444
1052	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1053	return;	1446	return;
1054		1447
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1449
1057	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1453
1061	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1062	}	1455	}
1063		1456
1064	void	1457	void
1065	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1066	{	1459	{
1067	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1069	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1070		1465
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1073		1468
1074	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1075	}	1470	}
1076		1471
1077	void	1472	void
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1079	{	1474	{
1080	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1081	return;	1476	return;
1082		1477
1083	w->at += mn_now;	1478	((WT)w)->at += mn_now;
1084		1479
1085	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.));
1086		1481
1087	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1091	}
1092		1486
		1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1488	}
		1489
1093	void	1490	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1095	{	1492	{
1096	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1098	return;	1495	return;
1099		1496
		1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1498
1100	if (w->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1101	{	1500	{
1102	timers [w->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1503	}
1105		1504
1106	w->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1107		1506
1108	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1109	}	1508	}
1110		1509
1111	void	1510	void
1112	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1113	{	1512	{
1114	if (ev_is_active (w))	1513	if (ev_is_active (w))
1115	{	1514	{
1116	if (w->repeat)	1515	if (w->repeat)
1117	{	1516	{
1118	w->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1519	}
1121	else	1520	else
1122	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1123	}	1522	}
1124	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1126	}	1528	}
1127		1529
		1530	#if EV_PERIODIC_ENABLE
1128	void	1531	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1130	{	1533	{
1131	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1132	return;	1535	return;
1133		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1134	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.));
1135
1136	/* 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 */
1137	if (w->interval)
1138	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	}
1139		1545
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1144	}
1145		1550
		1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1552	}
		1553
1146	void	1554	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1148	{	1556	{
1149	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1151	return;	1559	return;
1152		1560
		1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1562
1153	if (w->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1154	{	1564	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1567	}
1158		1568
1159	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1160	}	1570	}
1161		1571
1162	void	1572	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1164	{	1574	{
1165	if (ev_is_active (w))	1575	/* TODO: use adjustheap and recalculation */
1166	return;
1167
1168	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );
1170	idles [idlecnt - 1] = w;
1171	}
1172
1173	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{
1176	ev_clear_pending (EV_A_ (W)w);
1177	if (ev_is_active (w))
1178	return;
1179
1180	idles [w->active - 1] = idles [--idlecnt];
1181	ev_stop (EV_A_ (W)w);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1182	}	1578	}
1183		1579	#endif
1184	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
1186	{
1187	if (ev_is_active (w))
1188	return;
1189
1190	ev_start (EV_A_ (W)w, ++preparecnt);
1191	array_needsize (prepares, preparemax, preparecnt, );
1192	prepares [preparecnt - 1] = w;
1193	}
1194
1195	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197	{
1198	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))
1200	return;
1201
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);
1226	}
1227		1580
1228	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1582	# define SA_RESTART 0
1230	#endif	1583	#endif
1231		1584
1232	void	1585	void
1233	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1234	{	1587	{
1235	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1236	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));
1237	#endif	1590	#endif
1238	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1239	return;	1592	return;
1240		1593
1241	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));
1242		1595
1243	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1599
1247	if (!w->next)	1600	if (!((WL)w)->next)
1248	{	1601	{
		1602	#if _WIN32
		1603	signal (w->signum, sighandler);
		1604	#else
1249	struct sigaction sa;	1605	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
1252	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 */
1253	sigaction (w->signum, &sa, 0);	1609	sigaction (w->signum, &sa, 0);
		1610	#endif
1254	}	1611	}
1255	}	1612	}
1256		1613
1257	void	1614	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1259	{	1616	{
1260	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1262	return;	1619	return;
1263		1620
1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1265	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1266		1623
1267	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1268	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1269	}	1626	}
1270		1627
1271	void	1628	void
1272	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1273	{	1630	{
1274	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1275	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));
1276	#endif	1633	#endif
1277	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1278	return;	1635	return;
1279		1636
1280	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1282	}	1639	}
1283		1640
1284	void	1641	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1286	{	1643	{
1287	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1289	return;	1646	return;
1290		1647
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1293	}	1650	}
1294		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
1295	/*****************************************************************************/	1879	/*****************************************************************************/
1296		1880
1297	struct ev_once	1881	struct ev_once
1298	{	1882	{
1299	struct ev_io io;	1883	ev_io io;
1300	struct ev_timer to;	1884	ev_timer to;
1301	void (cb)(int revents, void arg);	1885	void (cb)(int revents, void arg);
1302	void *arg;	1886	void *arg;
1303	};	1887	};
1304		1888
1305	static void	1889	static void
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1892	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1893	void *arg = once->arg;
1310		1894
1311	ev_io_stop (EV_A_ &once->io);	1895	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1896	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1897	ev_free (once);
1314		1898
1315	cb (revents, arg);	1899	cb (revents, arg);
1316	}	1900	}
1317		1901
1318	static void	1902	static void
1319	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1320	{	1904	{
1321	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);
1322	}	1906	}
1323		1907
1324	static void	1908	static void
1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1326	{	1910	{
1327	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);
1328	}	1912	}
1329		1913
1330	void	1914	void
1331	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)
1332	{	1916	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1917	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1918
1335	if (!once)	1919	if (expect_false (!once))
		1920	{
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1921	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1922	return;
1338	{	1923	}
		1924
1339	once->cb = cb;	1925	once->cb = cb;
1340	once->arg = arg;	1926	once->arg = arg;
1341		1927
1342	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1929	if (fd >= 0)
1344	{	1930	{
1345	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1347	}	1933	}
1348		1934
1349	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1936	if (timeout >= 0.)
1351	{	1937	{
1352	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1354	}
1355	}	1940	}
1356	}	1941	}
1357		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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Comparing libev/ev.c (file contents): Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs. Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC