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

Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
98	# ifdef WIN32	158	# define EV_USE_PORT 0
99	# define EV_USE_WIN32 1	159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
100	# else	164	# else
101	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
102	# endif	166	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME
106	# define EV_USE_REALTIME 1
107	#endif	167	#endif
108		168
109	/**/	169	/**/
110		170
111	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
119	#endif	179	#endif
120		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
121	/**/	185	/**/
122		186
123	#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) */
124	#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) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	189	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
127		190
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
128	#include "ev.h"	194	# include "ev.h"
		195	#endif
129		196
130	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	207	#else
134	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
135	# define inline static	210	# define inline_size static
		211	# define noinline
136	#endif	212	#endif
137		213
138	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
140		216
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
144	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
147		226
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		228
150	#if WIN32	229	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	230	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	231	#endif
		232
		233	/*****************************************************************************/
		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)
155		282
156	/*****************************************************************************/	283	/*****************************************************************************/
157		284
158	typedef struct	285	typedef struct
159	{	286	{
160	WL head;	287	WL head;
161	unsigned char events;	288	unsigned char events;
162	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
163	} ANFD;	293	} ANFD;
164		294
165	typedef struct	295	typedef struct
166	{	296	{
167	W w;	297	W w;
168	int events;	298	int events;
169	} ANPENDING;	299	} ANPENDING;
170		300
171	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
172		302
173	struct ev_loop	303	struct ev_loop
174	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
175	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
176	# include "ev_vars.h"	308	#include "ev_vars.h"
177	};
178	# undef VAR	309	#undef VAR
		310	};
179	# 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;
180		315
181	#else	316	#else
182		317
		318	ev_tstamp ev_rt_now;
183	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
184	# include "ev_vars.h"	320	#include "ev_vars.h"
185	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
186		324
187	#endif	325	#endif
188		326
189	/*****************************************************************************/	327	/*****************************************************************************/
190		328
191	inline ev_tstamp	329	ev_tstamp
192	ev_time (void)	330	ev_time (void)
193	{	331	{
194	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
195	struct timespec ts;	333	struct timespec ts;
196	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
200	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
201	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
202	#endif	340	#endif
203	}	341	}
204		342
205	inline ev_tstamp	343	ev_tstamp inline_size
206	get_clock (void)	344	get_clock (void)
207	{	345	{
208	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
209	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
210	{	348	{
…		…
215	#endif	353	#endif
216		354
217	return ev_time ();	355	return ev_time ();
218	}	356	}
219		357
		358	#if EV_MULTIPLICITY
220	ev_tstamp	359	ev_tstamp
221	ev_now (EV_P)	360	ev_now (EV_P)
222	{	361	{
223	return rt_now;	362	return ev_rt_now;
224	}	363	}
		364	#endif
225		365
226	#define array_roundsize(base,n) ((n) \| 4 & ~3)	366	#define array_roundsize(type,n) (((n) \| 4) & ~3)
227		367
228	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
229	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
230	{ \	370	{ \
231	int newcnt = cur; \	371	int newcnt = cur; \
232	do \	372	do \
233	{ \	373	{ \
234	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
235	} \	375	} \
236	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
237	\	377	\
238	base = realloc (base, sizeof (base) (newcnt)); \	378	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
239	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
240	cur = newcnt; \	380	cur = newcnt; \
241	}	381	}
242		382
243	#define array_slim(stem) \	383	#define array_slim(type,stem) \
244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245	{ \	385	{ \
246	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
247	base = realloc (base, sizeof (base) (stem ## max)); \	387	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
249	}	389	}
250		390
251	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253		393
254	/*****************************************************************************/	394	/*****************************************************************************/
255		395
256	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
257	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
258	{	426	{
259	while (count--)	427	while (count--)
260	{	428	{
261	base->head = 0;	429	base->head = 0;
…		…
264		432
265	++base;	433	++base;
266	}	434	}
267	}	435	}
268		436
269	static void	437	void inline_speed
270	event (EV_P_ W w, int events)
271	{
272	if (w->pending)
273	{
274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
275	return;
276	}
277
278	w->pending = ++pendingcnt [ABSPRI (w)];
279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280	pendings [ABSPRI (w)][w->pending - 1].w = w;
281	pendings [ABSPRI (w)][w->pending - 1].events = events;
282	}
283
284	static void
285	queue_events (EV_P_ W *events, int eventcnt, int type)
286	{
287	int i;
288
289	for (i = 0; i < eventcnt; ++i)
290	event (EV_A_ events [i], type);
291	}
292
293	static void
294	fd_event (EV_P_ int fd, int events)	438	fd_event (EV_P_ int fd, int revents)
295	{	439	{
296	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
297	struct ev_io *w;	441	ev_io *w;
298		442
299	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)
300	{	444	{
301	int ev = w->events & events;	445	int ev = w->events & revents;
302		446
303	if (ev)	447	if (ev)
304	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
305	}	449	}
306	}	450	}
307		451
308	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
309		457
310	static void	458	void inline_size
311	fd_reify (EV_P)	459	fd_reify (EV_P)
312	{	460	{
313	int i;	461	int i;
314		462
315	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
316	{	464	{
317	int fd = fdchanges [i];	465	int fd = fdchanges [i];
318	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
319	struct ev_io *w;	467	ev_io *w;
320		468
321	int events = 0;	469	int events = 0;
322		470
323	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)
324	events \|= w->events;	472	events \|= w->events;
325		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
326	anfd->reify = 0;	483	anfd->reify = 0;
327		484
328	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
329	anfd->events = events;	486	anfd->events = events;
330	}	487	}
331		488
332	fdchangecnt = 0;	489	fdchangecnt = 0;
333	}	490	}
334		491
335	static void	492	void inline_size
336	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
337	{	494	{
338	if (anfds [fd].reify \|\| fdchangecnt < 0)	495	if (expect_false (anfds [fd].reify))
339	return;	496	return;
340		497
341	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
342		499
343	++fdchangecnt;	500	++fdchangecnt;
344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
346	}	503	}
347		504
348	static void	505	void inline_speed
349	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
350	{	507	{
351	struct ev_io *w;	508	ev_io *w;
352		509
353	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
354	{	511	{
355	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
356	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);
357	}	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
358	}	525	}
359		526
360	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
361	static void	528	static void noinline
362	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
363	{	530	{
364	int fd;	531	int fd;
365		532
366	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
367	if (anfds [fd].events)	534	if (anfds [fd].events)
368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
369	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
370	}	537	}
371		538
372	/* 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 */
373	static void	540	static void noinline
374	fd_enomem (EV_P)	541	fd_enomem (EV_P)
375	{	542	{
376	int fd;	543	int fd;
377		544
378	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
381	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
382	return;	549	return;
383	}	550	}
384	}	551	}
385		552
386	/* 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 */
387	static void	554	static void noinline
388	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
389	{	556	{
390	int fd;	557	int fd;
391		558
392	/* 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 */
…		…
398	}	565	}
399	}	566	}
400		567
401	/*****************************************************************************/	568	/*****************************************************************************/
402		569
403	static void	570	void inline_speed
404	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
405	{	572	{
406	WT w = heap [k];	573	WT w = heap [k];
407		574
408	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
415	heap [k] = w;	582	heap [k] = w;
416	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
417		584
418	}	585	}
419		586
420	static void	587	void inline_speed
421	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
422	{	589	{
423	WT w = heap [k];	590	WT w = heap [k];
424		591
425	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
439		606
440	heap [k] = w;	607	heap [k] = w;
441	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
442	}	609	}
443		610
		611	void inline_size
		612	adjustheap (WT *heap, int N, int k)
		613	{
		614	upheap (heap, k);
		615	downheap (heap, N, k);
		616	}
		617
444	/*****************************************************************************/	618	/*****************************************************************************/
445		619
446	typedef struct	620	typedef struct
447	{	621	{
448	WL head;	622	WL head;
…		…
452	static ANSIG *signals;	626	static ANSIG *signals;
453	static int signalmax;	627	static int signalmax;
454		628
455	static int sigpipe [2];	629	static int sigpipe [2];
456	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
457	static struct ev_io sigev;	631	static ev_io sigev;
458		632
459	static void	633	void inline_size
460	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
461	{	635	{
462	while (count--)	636	while (count--)
463	{	637	{
464	base->head = 0;	638	base->head = 0;
…		…
469	}	643	}
470		644
471	static void	645	static void
472	sighandler (int signum)	646	sighandler (int signum)
473	{	647	{
474	#if WIN32	648	#if _WIN32
475	signal (signum, sighandler);	649	signal (signum, sighandler);
476	#endif	650	#endif
477		651
478	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
479		653
…		…
484	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
485	errno = old_errno;	659	errno = old_errno;
486	}	660	}
487	}	661	}
488		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
489	static void	683	static void
490	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
491	{	685	{
492	WL w;
493	int signum;	686	int signum;
494		687
495	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
496	gotsig = 0;	689	gotsig = 0;
497		690
498	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
499	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
500	{	693	ev_feed_signal_event (EV_A_ signum + 1);
501	signals [signum].gotsig = 0;
502
503	for (w = signals [signum].head; w; w = w->next)
504	event (EV_A_ (W)w, EV_SIGNAL);
505	}
506	}	694	}
507		695
508	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
509	siginit (EV_P)	709	siginit (EV_P)
510	{	710	{
511	#ifndef WIN32	711	fd_intern (sigpipe [0]);
512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515	/* rather than sort out wether we really need nb, set it */
516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518	#endif
519		713
520	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
521	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
522	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
523	}	717	}
524		718
525	/*****************************************************************************/	719	/*****************************************************************************/
526		720
		721	static ev_child *childs [EV_PID_HASHSIZE];
		722
527	#ifndef WIN32	723	#ifndef _WIN32
528		724
529	static struct ev_child *childs [PID_HASHSIZE];
530	static struct ev_signal childev;	725	static ev_signal childev;
531		726
532	#ifndef WCONTINUED	727	void inline_speed
533	# define WCONTINUED 0
534	#endif
535
536	static void
537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
538	{	729	{
539	struct ev_child *w;	730	ev_child *w;
540		731
541	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	732	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
542	if (w->pid == pid \|\| !w->pid)	733	if (w->pid == pid \|\| !w->pid)
543	{	734	{
544	ev_priority (w) = ev_priority (sw); /* need to do it now */	735	ev_priority (w) = ev_priority (sw); /* need to do it now */
545	w->rpid = pid;	736	w->rpid = pid;
546	w->rstatus = status;	737	w->rstatus = status;
547	event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
548	}	739	}
549	}	740	}
550		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
551	static void	746	static void
552	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
553	{	748	{
554	int pid, status;	749	int pid, status;
555		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
556	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
557	{	753	if (!WCONTINUED
		754	\|\| errno != EINVAL
		755	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		756	return;
		757
558	/* 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 */
559	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560		761
561	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
562	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 */
563	}
564	}	765	}
565		766
566	#endif	767	#endif
567		768
568	/*****************************************************************************/	769	/*****************************************************************************/
569		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
570	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
571	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
572	#endif	776	#endif
573	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
574	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
591	{	795	{
592	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
593	}	797	}
594		798
595	/* 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 */
596	static int	800	int inline_size
597	enable_secure (void)	801	enable_secure (void)
598	{	802	{
599	#ifdef WIN32	803	#ifdef _WIN32
600	return 0;	804	return 0;
601	#else	805	#else
602	return getuid () != geteuid ()	806	return getuid () != geteuid ()
603	\|\| getgid () != getegid ();	807	\|\| getgid () != getegid ();
604	#endif	808	#endif
605	}	809	}
606		810
607	int	811	unsigned int
608	ev_method (EV_P)	812	ev_supported_backends (void)
609	{	813	{
610	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;
611	}	855	}
612		856
613	static void	857	static void
614	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
615	{	859	{
616	if (!method)	860	if (!backend)
617	{	861	{
618	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
619	{	863	{
620	struct timespec ts;	864	struct timespec ts;
621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622	have_monotonic = 1;	866	have_monotonic = 1;
623	}	867	}
624	#endif	868	#endif
625		869
626	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
627	mn_now = get_clock ();	871	mn_now = get_clock ();
628	now_floor = mn_now;	872	now_floor = mn_now;
629	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
630		874
631	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
632	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
633	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
634	else
635	methods = EVMETHOD_ANY;
636		879
637	method = 0;	880	if (!(flags & 0x0000ffffUL))
638	#if EV_USE_WIN32	881	flags \|= ev_recommended_backends ();
639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
640	#endif	886	#endif
641	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
643	#endif	889	#endif
644	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
646	#endif	892	#endif
647	#if EV_USE_POLL	893	#if EV_USE_POLL
648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
649	#endif	895	#endif
650	#if EV_USE_SELECT	896	#if EV_USE_SELECT
651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
652	#endif	898	#endif
653	}
654	}
655		899
656	void	900	ev_init (&sigev, sigcb);
		901	ev_set_priority (&sigev, EV_MAXPRI);
		902	}
		903	}
		904
		905	static void
657	loop_destroy (EV_P)	906	loop_destroy (EV_P)
658	{	907	{
659	int i;	908	int i;
660		909
661	#if EV_USE_WIN32	910	#if EV_USE_PORT
662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
663	#endif	912	#endif
664	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
666	#endif	915	#endif
667	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
669	#endif	918	#endif
670	#if EV_USE_POLL	919	#if EV_USE_POLL
671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
672	#endif	921	#endif
673	#if EV_USE_SELECT	922	#if EV_USE_SELECT
674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
675	#endif	924	#endif
676		925
677	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
678	array_free (pending, [i]);	927	array_free (pending, [i]);
679		928
		929	/* have to use the microsoft-never-gets-it-right macro */
680	array_free (fdchange, );	930	array_free (fdchange, EMPTY0);
681	array_free (timer, );	931	array_free (timer, EMPTY0);
		932	#if EV_PERIODIC_ENABLE
682	array_free (periodic, );	933	array_free (periodic, EMPTY0);
		934	#endif
683	array_free (idle, );	935	array_free (idle, EMPTY0);
684	array_free (prepare, );	936	array_free (prepare, EMPTY0);
685	array_free (check, );	937	array_free (check, EMPTY0);
686		938
687	method = 0;	939	backend = 0;
688	/TODO/
689	}	940	}
690		941
691	void	942	static void
692	loop_fork (EV_P)	943	loop_fork (EV_P)
693	{	944	{
694	/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
695	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
697	#endif	953	#endif
698	#if EV_USE_KQUEUE	954
699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	955	if (ev_is_active (&sigev))
700	#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;
701	}	971	}
702		972
703	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
704	struct ev_loop *	974	struct ev_loop *
705	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
706	{	976	{
707	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));
708		978
		979	memset (loop, 0, sizeof (struct ev_loop));
		980
709	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
710		982
711	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
712	return loop;	984	return loop;
713		985
714	return 0;	986	return 0;
715	}	987	}
716		988
717	void	989	void
718	ev_loop_destroy (EV_P)	990	ev_loop_destroy (EV_P)
719	{	991	{
720	loop_destroy (EV_A);	992	loop_destroy (EV_A);
721	free (loop);	993	ev_free (loop);
722	}	994	}
723		995
724	void	996	void
725	ev_loop_fork (EV_P)	997	ev_loop_fork (EV_P)
726	{	998	{
727	loop_fork (EV_A);	999	postfork = 1;
728	}	1000	}
729		1001
730	#endif	1002	#endif
731		1003
732	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
733	struct ev_loop default_loop_struct;
734	static struct ev_loop *default_loop;
735
736	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
737	#else	1007	#else
738	static int default_loop;
739
740	int	1008	int
		1009	ev_default_loop (unsigned int flags)
741	#endif	1010	#endif
742	ev_default_loop (int methods)
743	{	1011	{
744	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
745	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
746	return 0;	1014	return 0;
747		1015
748	if (!default_loop)	1016	if (!ev_default_loop_ptr)
749	{	1017	{
750	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
751	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752	#else	1020	#else
753	default_loop = 1;	1021	ev_default_loop_ptr = 1;
754	#endif	1022	#endif
755		1023
756	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
757		1025
758	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
759	{	1027	{
760	ev_watcher_init (&sigev, sigcb);
761	ev_set_priority (&sigev, EV_MAXPRI);
762	siginit (EV_A);	1028	siginit (EV_A);
763		1029
764	#ifndef WIN32	1030	#ifndef _WIN32
765	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
766	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
767	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
768	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
769	#endif	1035	#endif
770	}	1036	}
771	else	1037	else
772	default_loop = 0;	1038	ev_default_loop_ptr = 0;
773	}	1039	}
774		1040
775	return default_loop;	1041	return ev_default_loop_ptr;
776	}	1042	}
777		1043
778	void	1044	void
779	ev_default_destroy (void)	1045	ev_default_destroy (void)
780	{	1046	{
781	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
782	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
783	#endif	1049	#endif
784		1050
		1051	#ifndef _WIN32
785	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
786	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
		1054	#endif
787		1055
788	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
789	ev_io_stop (EV_A_ &sigev);	1057	ev_io_stop (EV_A_ &sigev);
790		1058
791	close (sigpipe [0]); sigpipe [0] = 0;	1059	close (sigpipe [0]); sigpipe [0] = 0;
…		…
796		1064
797	void	1065	void
798	ev_default_fork (void)	1066	ev_default_fork (void)
799	{	1067	{
800	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
801	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
802	#endif	1070	#endif
803		1071
804	loop_fork (EV_A);	1072	if (backend)
805		1073	postfork = 1;
806	ev_io_stop (EV_A_ &sigev);
807	close (sigpipe [0]);
808	close (sigpipe [1]);
809	pipe (sigpipe);
810
811	ev_ref (EV_A); /* signal watcher */
812	siginit (EV_A);
813	}	1074	}
814		1075
815	/*****************************************************************************/	1076	/*****************************************************************************/
816		1077
817	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
818	call_pending (EV_P)	1091	call_pending (EV_P)
819	{	1092	{
820	int pri;	1093	int pri;
821		1094
822	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
823	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
824	{	1097	{
825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826		1099
827	if (p->w)	1100	if (expect_true (p->w))
828	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
829	p->w->pending = 0;	1104	p->w->pending = 0;
830	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
831	}	1106	}
832	}	1107	}
833	}	1108	}
834		1109
835	static void	1110	void inline_size
836	timers_reify (EV_P)	1111	timers_reify (EV_P)
837	{	1112	{
838	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
839	{	1114	{
840	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
841		1116
842	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
843		1118
844	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
845	if (w->repeat)	1120	if (w->repeat)
846	{	1121	{
847	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
848	((WT)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
849	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
850	}	1129	}
851	else	1130	else
852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853		1132
854	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855	}	1134	}
856	}	1135	}
857		1136
858	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
859	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
860	{	1140	{
861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862	{	1142	{
863	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
864		1144
865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
866		1146
867	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
868	if (w->interval)	1148	if (w->reschedule_cb)
869	{	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	{
870	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
872	downheap ((WT *)periodics, periodiccnt, 0);	1158	downheap ((WT *)periodics, periodiccnt, 0);
873	}	1159	}
874	else	1160	else
875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876		1162
877	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878	}	1164	}
879	}	1165	}
880		1166
881	static void	1167	static void noinline
882	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
883	{	1169	{
884	int i;	1170	int i;
885		1171
886	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
887	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
888	{	1174	{
889	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
890		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891	if (w->interval)	1179	else if (w->interval)
892	{
893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
894
895	if (fabs (diff) >= 1e-4)
896	{
897	ev_periodic_stop (EV_A_ w);
898	ev_periodic_start (EV_A_ w);
899
900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
901	}
902	}
903	}	1181	}
904	}
905		1182
906	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
907	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
908	{	1191	{
909	mn_now = get_clock ();	1192	mn_now = get_clock ();
910		1193
911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912	{	1195	{
913	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
914	return 0;	1197	return 0;
915	}	1198	}
916	else	1199	else
917	{	1200	{
918	now_floor = mn_now;	1201	now_floor = mn_now;
919	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
920	return 1;	1203	return 1;
921	}	1204	}
922	}	1205	}
923		1206
924	static void	1207	void inline_size
925	time_update (EV_P)	1208	time_update (EV_P)
926	{	1209	{
927	int i;	1210	int i;
928		1211
929	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
931	{	1214	{
932	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
933	{	1216	{
934	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
935		1218
936	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; )
937	{	1228	{
938	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
939		1230
940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941	return; /* all is well */	1232	return; /* all is well */
942		1233
943	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
944	mn_now = get_clock ();	1235	mn_now = get_clock ();
945	now_floor = mn_now;	1236	now_floor = mn_now;
946	}	1237	}
947		1238
		1239	# if EV_PERIODIC_ENABLE
948	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
949	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
951	}	1244	}
952	}	1245	}
953	else	1246	else
954	#endif	1247	#endif
955	{	1248	{
956	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
957		1250
958	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))
959	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
960	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
961		1256
962	/* 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 */
963	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
964	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
965	}	1260	}
966		1261
967	mn_now = rt_now;	1262	mn_now = ev_rt_now;
968	}	1263	}
969	}	1264	}
970		1265
971	void	1266	void
972	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
983	static int loop_done;	1278	static int loop_done;
984		1279
985	void	1280	void
986	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
987	{	1282	{
988	double block;
989	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
990		1286
991	do	1287	while (activecnt)
992	{	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
993	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
994	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
995	{	1301	{
996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997	call_pending (EV_A);	1303	call_pending (EV_A);
998	}	1304	}
999		1305
		1306	/* we might have forked, so reify kernel state if necessary */
		1307	if (expect_false (postfork))
		1308	loop_fork (EV_A);
		1309
1000	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1001	fd_reify (EV_A);	1311	fd_reify (EV_A);
1002		1312
1003	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1004		1316
1005	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1006	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 */
1007	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1008	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1009	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1010	else	1325	else
1011	#endif	1326	#endif
1012	{	1327	{
1013	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1014	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1015	}	1330	}
1016		1331
1017	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1018	block = 0.;
1019	else
1020	{
1021	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1022		1333
1023	if (timercnt)	1334	if (timercnt)
1024	{	1335	{
1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1026	if (block > to) block = to;	1337	if (block > to) block = to;
1027	}	1338	}
1028		1339
		1340	#if EV_PERIODIC_ENABLE
1029	if (periodiccnt)	1341	if (periodiccnt)
1030	{	1342	{
1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1032	if (block > to) block = to;	1344	if (block > to) block = to;
1033	}	1345	}
		1346	#endif
1034		1347
1035	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1036	}	1349	}
1037		1350
1038	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1039		1353
1040	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1041	time_update (EV_A);	1355	time_update (EV_A);
1042		1356
1043	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1044	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1045	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1046		1362
1047	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1048	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1050		1366
1051	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1052	if (checkcnt)	1368	if (expect_false (checkcnt))
1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054		1370
1055	call_pending (EV_A);	1371	call_pending (EV_A);
1056	}
1057	while (activecnt && !loop_done);
1058		1372
1059	if (loop_done != 2)	1373	if (expect_false (loop_done))
1060	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1061	}	1379	}
1062		1380
1063	void	1381	void
1064	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1065	{	1383	{
1066	loop_done = how;	1384	loop_done = how;
1067	}	1385	}
1068		1386
1069	/*****************************************************************************/	1387	/*****************************************************************************/
1070		1388
1071	inline void	1389	void inline_size
1072	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1073	{	1391	{
1074	elem->next = *head;	1392	elem->next = *head;
1075	*head = elem;	1393	*head = elem;
1076	}	1394	}
1077		1395
1078	inline void	1396	void inline_size
1079	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1080	{	1398	{
1081	while (*head)	1399	while (*head)
1082	{	1400	{
1083	if (*head == elem)	1401	if (*head == elem)
…		…
1088		1406
1089	head = &(*head)->next;	1407	head = &(*head)->next;
1090	}	1408	}
1091	}	1409	}
1092		1410
1093	inline void	1411	void inline_speed
1094	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1095	{	1413	{
1096	if (w->pending)	1414	if (w->pending)
1097	{	1415	{
1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1099	w->pending = 0;	1417	w->pending = 0;
1100	}	1418	}
1101	}	1419	}
1102		1420
1103	inline void	1421	void inline_speed
1104	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1105	{	1423	{
1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1108		1426
1109	w->active = active;	1427	w->active = active;
1110	ev_ref (EV_A);	1428	ev_ref (EV_A);
1111	}	1429	}
1112		1430
1113	inline void	1431	void inline_size
1114	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1115	{	1433	{
1116	ev_unref (EV_A);	1434	ev_unref (EV_A);
1117	w->active = 0;	1435	w->active = 0;
1118	}	1436	}
1119		1437
1120	/*****************************************************************************/	1438	/*****************************************************************************/
1121		1439
1122	void	1440	void
1123	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1124	{	1442	{
1125	int fd = w->fd;	1443	int fd = w->fd;
1126		1444
1127	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1128	return;	1446	return;
1129		1447
1130	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1131		1449
1132	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1135		1453
1136	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1137	}	1455	}
1138		1456
1139	void	1457	void
1140	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1141	{	1459	{
1142	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1144	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1145		1465
1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1147	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1148		1468
1149	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1150	}	1470	}
1151		1471
1152	void	1472	void
1153	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1154	{	1474	{
1155	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1156	return;	1476	return;
1157		1477
1158	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1159		1479
1160	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.));
1161		1481
1162	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1163	array_needsize (timers, timermax, timercnt, );	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1164	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1165	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1166		1486
1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1168	}	1488	}
1169		1489
1170	void	1490	void
1171	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1172	{	1492	{
1173	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1174	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1175	return;	1495	return;
1176		1496
1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1178		1498
1179	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1180	{	1500	{
1181	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183	}	1503	}
1184		1504
1185	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1186		1506
1187	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1188	}	1508	}
1189		1509
1190	void	1510	void
1191	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1192	{	1512	{
1193	if (ev_is_active (w))	1513	if (ev_is_active (w))
1194	{	1514	{
1195	if (w->repeat)	1515	if (w->repeat)
1196	{	1516	{
1197	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1199	}	1519	}
1200	else	1520	else
1201	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1202	}	1522	}
1203	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1204	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1205	}	1528	}
1206		1529
		1530	#if EV_PERIODIC_ENABLE
1207	void	1531	void
1208	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1209	{	1533	{
1210	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1211	return;	1535	return;
1212		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1213	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.));
1214
1215	/* 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 */
1216	if (w->interval)
1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1544	}
1218		1545
1219	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1220	array_needsize (periodics, periodicmax, periodiccnt, );	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1221	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1222	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1223		1550
1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1225	}	1552	}
1226		1553
1227	void	1554	void
1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1229	{	1556	{
1230	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1231	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1232	return;	1559	return;
1233		1560
1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1235		1562
1236	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1237	{	1564	{
1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1240	}	1567	}
1241		1568
1242	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1243	}	1570	}
1244		1571
1245	void	1572	void
1246	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1247	{	1574	{
1248	if (ev_is_active (w))	1575	/* TODO: use adjustheap and recalculation */
1249	return;
1250
1251	ev_start (EV_A_ (W)w, ++idlecnt);
1252	array_needsize (idles, idlemax, idlecnt, );
1253	idles [idlecnt - 1] = w;
1254	}
1255
1256	void
1257	ev_idle_stop (EV_P_ struct ev_idle *w)
1258	{
1259	ev_clear_pending (EV_A_ (W)w);
1260	if (ev_is_active (w))
1261	return;
1262
1263	idles [((W)w)->active - 1] = idles [--idlecnt];
1264	ev_stop (EV_A_ (W)w);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1265	}	1578	}
1266		1579	#endif
1267	void
1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
1269	{
1270	if (ev_is_active (w))
1271	return;
1272
1273	ev_start (EV_A_ (W)w, ++preparecnt);
1274	array_needsize (prepares, preparemax, preparecnt, );
1275	prepares [preparecnt - 1] = w;
1276	}
1277
1278	void
1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280	{
1281	ev_clear_pending (EV_A_ (W)w);
1282	if (ev_is_active (w))
1283	return;
1284
1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286	ev_stop (EV_A_ (W)w);
1287	}
1288
1289	void
1290	ev_check_start (EV_P_ struct ev_check *w)
1291	{
1292	if (ev_is_active (w))
1293	return;
1294
1295	ev_start (EV_A_ (W)w, ++checkcnt);
1296	array_needsize (checks, checkmax, checkcnt, );
1297	checks [checkcnt - 1] = w;
1298	}
1299
1300	void
1301	ev_check_stop (EV_P_ struct ev_check *w)
1302	{
1303	ev_clear_pending (EV_A_ (W)w);
1304	if (ev_is_active (w))
1305	return;
1306
1307	checks [((W)w)->active - 1] = checks [--checkcnt];
1308	ev_stop (EV_A_ (W)w);
1309	}
1310		1580
1311	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1312	# define SA_RESTART 0	1582	# define SA_RESTART 0
1313	#endif	1583	#endif
1314		1584
1315	void	1585	void
1316	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1317	{	1587	{
1318	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1319	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));
1320	#endif	1590	#endif
1321	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1322	return;	1592	return;
1323		1593
1324	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));
1325		1595
1326	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1327	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1329		1599
1330	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1331	{	1601	{
1332	#if WIN32	1602	#if _WIN32
1333	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1334	#else	1604	#else
1335	struct sigaction sa;	1605	struct sigaction sa;
1336	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1337	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1340	#endif	1610	#endif
1341	}	1611	}
1342	}	1612	}
1343		1613
1344	void	1614	void
1345	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1346	{	1616	{
1347	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1348	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1349	return;	1619	return;
1350		1620
1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1352	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1353		1623
1354	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1355	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1356	}	1626	}
1357		1627
1358	void	1628	void
1359	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1360	{	1630	{
1361	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1362	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));
1363	#endif	1633	#endif
1364	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1365	return;	1635	return;
1366		1636
1367	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1369	}	1639	}
1370		1640
1371	void	1641	void
1372	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1373	{	1643	{
1374	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1375	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1376	return;	1646	return;
1377		1647
1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1379	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1380	}	1650	}
1381		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
1382	/*****************************************************************************/	1879	/*****************************************************************************/
1383		1880
1384	struct ev_once	1881	struct ev_once
1385	{	1882	{
1386	struct ev_io io;	1883	ev_io io;
1387	struct ev_timer to;	1884	ev_timer to;
1388	void (cb)(int revents, void arg);	1885	void (cb)(int revents, void arg);
1389	void *arg;	1886	void *arg;
1390	};	1887	};
1391		1888
1392	static void	1889	static void
…		…
1395	void (cb)(int revents, void arg) = once->cb;	1892	void (cb)(int revents, void arg) = once->cb;
1396	void *arg = once->arg;	1893	void *arg = once->arg;
1397		1894
1398	ev_io_stop (EV_A_ &once->io);	1895	ev_io_stop (EV_A_ &once->io);
1399	ev_timer_stop (EV_A_ &once->to);	1896	ev_timer_stop (EV_A_ &once->to);
1400	free (once);	1897	ev_free (once);
1401		1898
1402	cb (revents, arg);	1899	cb (revents, arg);
1403	}	1900	}
1404		1901
1405	static void	1902	static void
1406	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1407	{	1904	{
1408	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);
1409	}	1906	}
1410		1907
1411	static void	1908	static void
1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1413	{	1910	{
1414	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);
1415	}	1912	}
1416		1913
1417	void	1914	void
1418	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)
1419	{	1916	{
1420	struct ev_once *once = malloc (sizeof (struct ev_once));	1917	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1421		1918
1422	if (!once)	1919	if (expect_false (!once))
		1920	{
1423	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1921	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1424	else	1922	return;
1425	{	1923	}
		1924
1426	once->cb = cb;	1925	once->cb = cb;
1427	once->arg = arg;	1926	once->arg = arg;
1428		1927
1429	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1430	if (fd >= 0)	1929	if (fd >= 0)
1431	{	1930	{
1432	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1433	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1434	}	1933	}
1435		1934
1436	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1437	if (timeout >= 0.)	1936	if (timeout >= 0.)
1438	{	1937	{
1439	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1440	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1441	}
1442	}	1940	}
1443	}	1941	}
1444		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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Comparing libev/ev.c (file contents): Revision 1.68 by root, Mon Nov 5 20:19:00 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 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC