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

Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 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
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
57	#endif	96	#endif
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
61	#endif	101	#endif
62		102
63	#ifndef EV_USEV_POLL	103	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
65	#endif	109	#endif
66		110
67	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
69	#endif	113	#endif
…		…
75	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
77	#endif	121	#endif
78		122
79	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
80		130
81	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
84	#endif	134	#endif
85		135
86	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
89	#endif	143	#endif
90		144
91	/**/	145	/**/
92		146
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#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) */	148	#define MAX_BLOCKTIME 59.731 /* 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 */	149	#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 */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
98	#include "ev.h"	155	# include "ev.h"
		156	#endif
99		157
100	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	160	# define inline inline
103	#else	161	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
110		168
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
114	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
117		178
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
120	/*****************************************************************************/	185	/*****************************************************************************/
121		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
122	typedef struct	235	typedef struct
123	{	236	{
124	struct ev_watcher_list *head;	237	WL head;
125	unsigned char events;	238	unsigned char events;
126	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
127	} ANFD;	243	} ANFD;
128		244
129	typedef struct	245	typedef struct
130	{	246	{
131	W w;	247	W w;
132	int events;	248	int events;
133	} ANPENDING;	249	} ANPENDING;
134		250
135	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
136		252
137	struct ev_loop	253	struct ev_loop
138	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	258	#include "ev_vars.h"
141	};
142	# undef VAR	259	#undef VAR
		260	};
143	# include "ev_wrap.h"	261	#include "ev_wrap.h"
		262
		263	struct ev_loop default_loop_struct;
		264	static struct ev_loop *default_loop;
144		265
145	#else	266	#else
146		267
		268	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	270	#include "ev_vars.h"
149	# undef VAR	271	#undef VAR
		272
		273	static int default_loop;
150		274
151	#endif	275	#endif
152		276
153	/*****************************************************************************/	277	/*****************************************************************************/
154		278
155	inline ev_tstamp	279	ev_tstamp
156	ev_time (void)	280	ev_time (void)
157	{	281	{
158	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
159	struct timespec ts;	283	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	303	#endif
180		304
181	return ev_time ();	305	return ev_time ();
182	}	306	}
183		307
		308	#if EV_MULTIPLICITY
184	ev_tstamp	309	ev_tstamp
185	ev_now (EV_P)	310	ev_now (EV_P)
186	{	311	{
187	return rt_now;	312	return ev_rt_now;
188	}	313	}
		314	#endif
189		315
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		317
192	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
194	{ \	320	{ \
195	int newcnt = cur; \	321	int newcnt = cur; \
196	do \	322	do \
197	{ \	323	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	325	} \
200	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
201	\	327	\
202	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	330	cur = newcnt; \
205	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		343
207	/*****************************************************************************/	344	/*****************************************************************************/
208		345
209	static void	346	static void
210	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
…		…
217		354
218	++base;	355	++base;
219	}	356	}
220	}	357	}
221		358
222	static void	359	void
223	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
224	{	361	{
		362	W w_ = (W)w;
		363
225	if (w->pending)	364	if (w_->pending)
226	{	365	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	367	return;
229	}	368	}
230		369
231	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	374	}
236		375
237	static void	376	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	378	{
240	int i;	379	int i;
241		380
242	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
244	}	383	}
245		384
246	static void	385	inline void
247	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
248	{	387	{
249	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	389	struct ev_io *w;
251		390
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	392	{
254	int ev = w->events & events;	393	int ev = w->events & revents;
255		394
256	if (ev)	395	if (ev)
257	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
258	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
259	}	404	}
260		405
261	/*****************************************************************************/	406	/*****************************************************************************/
262		407
263	static void	408	static void
…		…
274	int events = 0;	419	int events = 0;
275		420
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	422	events \|= w->events;
278		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
279	anfd->reify = 0;	433	anfd->reify = 0;
280		434
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	436	anfd->events = events;
285	}
286	}	437	}
287		438
288	fdchangecnt = 0;	439	fdchangecnt = 0;
289	}	440	}
290		441
291	static void	442	static void
292	fd_change (EV_P_ int fd)	443	fd_change (EV_P_ int fd)
293	{	444	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
295	return;	446	return;
296		447
297	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
298		449
299	++fdchangecnt;	450	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
302	}	453	}
303		454
304	static void	455	static void
305	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	458	struct ev_io *w;
308		459
309	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
310	{	461	{
311	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
314	}	475	}
315		476
316	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
317	static void	478	static void
318	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
319	{	480	{
320	int fd;	481	int fd;
321		482
322	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	484	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
326	}	487	}
327		488
328	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	490	static void
330	fd_enomem (EV_P)	491	fd_enomem (EV_P)
331	{	492	{
332	int fd = anfdmax;	493	int fd;
333		494
334	while (fd--)	495	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	496	if (anfds [fd].events)
336	{	497	{
337	close (fd);
338	fd_kill (EV_A_ fd);	498	fd_kill (EV_A_ fd);
339	return;	499	return;
340	}	500	}
341	}	501	}
342		502
343	/* susually called after fork if method needs to re-arm all fds from scratch */	503	/* usually called after fork if method needs to re-arm all fds from scratch */
344	static void	504	static void
345	fd_rearm_all (EV_P)	505	fd_rearm_all (EV_P)
346	{	506	{
347	int fd;	507	int fd;
348		508
349	/* this should be highly optimised to not do anything but set a flag */	509	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	510	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	511	if (anfds [fd].events)
352	{	512	{
353	anfds [fd].events = 0;	513	anfds [fd].events = 0;
354	fd_change (fd);	514	fd_change (EV_A_ fd);
355	}	515	}
356	}	516	}
357		517
358	/*****************************************************************************/	518	/*****************************************************************************/
359		519
…		…
363	WT w = heap [k];	523	WT w = heap [k];
364		524
365	while (k && heap [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
366	{	526	{
367	heap [k] = heap [k >> 1];	527	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
369	k >>= 1;	529	k >>= 1;
370	}	530	}
371		531
372	heap [k] = w;	532	heap [k] = w;
373	heap [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
374		534
375	}	535	}
376		536
377	static void	537	static void
378	downheap (WT *heap, int N, int k)	538	downheap (WT *heap, int N, int k)
…		…
388		548
389	if (w->at <= heap [j]->at)	549	if (w->at <= heap [j]->at)
390	break;	550	break;
391		551
392	heap [k] = heap [j];	552	heap [k] = heap [j];
393	heap [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
394	k = j;	554	k = j;
395	}	555	}
396		556
397	heap [k] = w;	557	heap [k] = w;
398	heap [k]->active = k + 1;	558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
399	}	566	}
400		567
401	/*****************************************************************************/	568	/*****************************************************************************/
402		569
403	typedef struct	570	typedef struct
404	{	571	{
405	struct ev_watcher_list *head;	572	WL head;
406	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
407	} ANSIG;	574	} ANSIG;
408		575
409	static ANSIG *signals;	576	static ANSIG *signals;
410	static int signalmax;	577	static int signalmax;
411		578
412	static int sigpipe [2];	579	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	580	static sig_atomic_t volatile gotsig;
		581	static struct ev_io sigev;
414		582
415	static void	583	static void
416	signals_init (ANSIG *base, int count)	584	signals_init (ANSIG *base, int count)
417	{	585	{
418	while (count--)	586	while (count--)
…		…
425	}	593	}
426		594
427	static void	595	static void
428	sighandler (int signum)	596	sighandler (int signum)
429	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
430	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
431		603
432	if (!gotsig)	604	if (!gotsig)
433	{	605	{
434	int old_errno = errno;	606	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	609	errno = old_errno;
438	}	610	}
439	}	611	}
440		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
441	static void	633	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
443	{	635	{
444	struct ev_watcher_list *w;
445	int signum;	636	int signum;
446		637
447	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	639	gotsig = 0;
449		640
450	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
452	{	643	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;	644	}
454		645
455	for (w = signals [signum].head; w; w = w->next)	646	inline void
456	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
457	}	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
		653	fcntl (fd, F_SETFD, FD_CLOEXEC);
		654	fcntl (fd, F_SETFL, O_NONBLOCK);
		655	#endif
458	}	656	}
459		657
460	static void	658	static void
461	siginit (EV_P)	659	siginit (EV_P)
462	{	660	{
463	#ifndef WIN32	661	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		663
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	667	}
476		668
477	/*****************************************************************************/	669	/*****************************************************************************/
478		670
		671	static struct ev_child *childs [PID_HASHSIZE];
		672
479	#ifndef WIN32	673	#ifndef _WIN32
		674
		675	static struct ev_signal childev;
480		676
481	#ifndef WCONTINUED	677	#ifndef WCONTINUED
482	# define WCONTINUED 0	678	# define WCONTINUED 0
483	#endif	679	#endif
484		680
…		…
488	struct ev_child *w;	684	struct ev_child *w;
489		685
490	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	686	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
491	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
492	{	688	{
493	w->priority = sw->priority; /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
494	w->rpid = pid;	690	w->rpid = pid;
495	w->rstatus = status;	691	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
497	}	693	}
498	}	694	}
499		695
500	static void	696	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
503	int pid, status;	699	int pid, status;
504		700
505	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
506	{	702	{
507	/* make sure we are called again until all childs have been reaped */	703	/* make sure we are called again until all childs have been reaped */
508	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		705
510	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
512	}	708	}
513	}	709	}
…		…
520	# include "ev_kqueue.c"	716	# include "ev_kqueue.c"
521	#endif	717	#endif
522	#if EV_USE_EPOLL	718	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	719	# include "ev_epoll.c"
524	#endif	720	#endif
525	#if EV_USEV_POLL	721	#if EV_USE_POLL
526	# include "ev_poll.c"	722	# include "ev_poll.c"
527	#endif	723	#endif
528	#if EV_USE_SELECT	724	#if EV_USE_SELECT
529	# include "ev_select.c"	725	# include "ev_select.c"
530	#endif	726	#endif
…		…
543		739
544	/* return true if we are running with elevated privileges and should ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
545	static int	741	static int
546	enable_secure (void)	742	enable_secure (void)
547	{	743	{
548	#ifdef WIN32	744	#ifdef _WIN32
549	return 0;	745	return 0;
550	#else	746	#else
551	return getuid () != geteuid ()	747	return getuid () != geteuid ()
552	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
553	#endif	749	#endif
554	}	750	}
555		751
556	int	752	unsigned int
557	ev_method (EV_P)	753	ev_method (EV_P)
558	{	754	{
559	return method;	755	return method;
560	}	756	}
561		757
562	static void	758	static void
563	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
564	{	760	{
565	if (!method)	761	if (!method)
566	{	762	{
567	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
568	{	764	{
…		…
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	767	have_monotonic = 1;
572	}	768	}
573	#endif	769	#endif
574		770
575	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	772	mn_now = get_clock ();
577	now_floor = mn_now;	773	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
579		775
580	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else	778
584	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
585		781
586	method = 0;	782	method = 0;
587	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
589	#endif	785	#endif
590	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
592	#endif	788	#endif
593	#if EV_USEV_POLL	789	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
595	#endif	791	#endif
596	#if EV_USE_SELECT	792	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
598	#endif	794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
599	}	798	}
600	}	799	}
601		800
602	void	801	void
603	loop_destroy (EV_P)	802	loop_destroy (EV_P)
604	{	803	{
		804	int i;
		805
605	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
607	#endif	808	#endif
608	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
610	#endif	811	#endif
611	#if EV_USEV_POLL	812	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
613	#endif	814	#endif
614	#if EV_USE_SELECT	815	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
616	#endif	817	#endif
617		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
618	method = 0;	832	method = 0;
619	/TODO/
620	}	833	}
621		834
622	void	835	static void
623	loop_fork (EV_P)	836	loop_fork (EV_P)
624	{	837	{
625	/TODO/
626	#if EV_USE_EPOLL	838	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
628	#endif	840	#endif
629	#if EV_USE_KQUEUE	841	#if EV_USE_KQUEUE
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
631	#endif	843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
632	}	861	}
633		862
634	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
635	struct ev_loop *	864	struct ev_loop *
636	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
637	{	866	{
638	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
639		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
640	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
641		872
642	if (ev_methods (EV_A))	873	if (ev_method (EV_A))
643	return loop;	874	return loop;
644		875
645	return 0;	876	return 0;
646	}	877	}
647		878
648	void	879	void
649	ev_loop_destroy (EV_P)	880	ev_loop_destroy (EV_P)
650	{	881	{
651	loop_destroy (EV_A);	882	loop_destroy (EV_A);
652	free (loop);	883	ev_free (loop);
653	}	884	}
654		885
655	void	886	void
656	ev_loop_fork (EV_P)	887	ev_loop_fork (EV_P)
657	{	888	{
658	loop_fork (EV_A);	889	postfork = 1;
659	}	890	}
660		891
661	#endif	892	#endif
662		893
663	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	895	struct ev_loop *
668	#else	896	#else
669	static int default_loop;
670
671	int	897	int
672	#endif	898	#endif
673	ev_default_loop (int methods)	899	ev_default_loop (unsigned int flags)
674	{	900	{
675	if (sigpipe [0] == sigpipe [1])	901	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	902	if (pipe (sigpipe))
677	return 0;	903	return 0;
678		904
…		…
682	struct ev_loop *loop = default_loop = &default_loop_struct;	908	struct ev_loop *loop = default_loop = &default_loop_struct;
683	#else	909	#else
684	default_loop = 1;	910	default_loop = 1;
685	#endif	911	#endif
686		912
687	loop_init (EV_A_ methods);	913	loop_init (EV_A_ flags);
688		914
689	if (ev_method (EV_A))	915	if (ev_method (EV_A))
690	{	916	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	917	siginit (EV_A);
694		918
695	#ifndef WIN32	919	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	921	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	922	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	923	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	924	#endif
…		…
707	}	931	}
708		932
709	void	933	void
710	ev_default_destroy (void)	934	ev_default_destroy (void)
711	{	935	{
		936	#if EV_MULTIPLICITY
712	struct ev_loop *loop = default_loop;	937	struct ev_loop *loop = default_loop;
		938	#endif
713		939
		940	#ifndef _WIN32
714	ev_ref (EV_A); /* child watcher */	941	ev_ref (EV_A); /* child watcher */
715	ev_signal_stop (EV_A_ &childev);	942	ev_signal_stop (EV_A_ &childev);
		943	#endif
716		944
717	ev_ref (EV_A); /* signal watcher */	945	ev_ref (EV_A); /* signal watcher */
718	ev_io_stop (EV_A_ &sigev);	946	ev_io_stop (EV_A_ &sigev);
719		947
720	close (sigpipe [0]); sigpipe [0] = 0;	948	close (sigpipe [0]); sigpipe [0] = 0;
…		…
722		950
723	loop_destroy (EV_A);	951	loop_destroy (EV_A);
724	}	952	}
725		953
726	void	954	void
727	ev_default_fork (EV_P)	955	ev_default_fork (void)
728	{	956	{
729	loop_fork (EV_A);	957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = default_loop;
		959	#endif
730		960
731	ev_io_stop (EV_A_ &sigev);	961	if (method)
732	close (sigpipe [0]);	962	postfork = 1;
733	close (sigpipe [1]);
734	pipe (sigpipe);
735
736	ev_ref (EV_A); /* signal watcher */
737	siginit (EV_A);
738	}	963	}
739		964
740	/*****************************************************************************/	965	/*****************************************************************************/
		966
		967	static int
		968	any_pending (EV_P)
		969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
		973	if (pendingcnt [pri])
		974	return 1;
		975
		976	return 0;
		977	}
741		978
742	static void	979	static void
743	call_pending (EV_P)	980	call_pending (EV_P)
744	{	981	{
745	int pri;	982	int pri;
…		…
750	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
751		988
752	if (p->w)	989	if (p->w)
753	{	990	{
754	p->w->pending = 0;	991	p->w->pending = 0;
755	p->w->cb (EV_A_ p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
756	}	993	}
757	}	994	}
758	}	995	}
759		996
760	static void	997	static void
761	timers_reify (EV_P)	998	timers_reify (EV_P)
762	{	999	{
763	while (timercnt && timers [0]->at <= mn_now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
764	{	1001	{
765	struct ev_timer *w = timers [0];	1002	struct ev_timer *w = timers [0];
		1003
		1004	assert (("inactive timer on timer heap detected", ev_is_active (w)));
766		1005
767	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
768	if (w->repeat)	1007	if (w->repeat)
769	{	1008	{
770	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1010
771	w->at = mn_now + w->repeat;	1011	((WT)w)->at += w->repeat;
		1012	if (((WT)w)->at < mn_now)
		1013	((WT)w)->at = mn_now;
		1014
772	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
773	}	1016	}
774	else	1017	else
775	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
776		1019
777	event (EV_A_ (W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
778	}	1021	}
779	}	1022	}
780		1023
		1024	#if EV_PERIODICS
781	static void	1025	static void
782	periodics_reify (EV_P)	1026	periodics_reify (EV_P)
783	{	1027	{
784	while (periodiccnt && periodics [0]->at <= rt_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
785	{	1029	{
786	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
787		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
788	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
789	if (w->interval)	1035	if (w->reschedule_cb)
790	{	1036	{
		1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
791	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
792	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
793	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
794	}	1046	}
795	else	1047	else
796	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
797		1049
798	event (EV_A_ (W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
799	}	1051	}
800	}	1052	}
801		1053
802	static void	1054	static void
803	periodics_reschedule (EV_P)	1055	periodics_reschedule (EV_P)
…		…
807	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
808	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
809	{	1061	{
810	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
811		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
812	if (w->interval)	1066	else if (w->interval)
813	{
814	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
815
816	if (fabs (diff) >= 1e-4)
817	{
818	ev_periodic_stop (EV_A_ w);
819	ev_periodic_start (EV_A_ w);
820
821	i = 0; /* restart loop, inefficient, but time jumps should be rare */
822	}
823	}
824	}	1068	}
		1069
		1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
825	}	1073	}
		1074	#endif
826		1075
827	inline int	1076	inline int
828	time_update_monotonic (EV_P)	1077	time_update_monotonic (EV_P)
829	{	1078	{
830	mn_now = get_clock ();	1079	mn_now = get_clock ();
831		1080
832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
833	{	1082	{
834	rt_now = rtmn_diff + mn_now;	1083	ev_rt_now = rtmn_diff + mn_now;
835	return 0;	1084	return 0;
836	}	1085	}
837	else	1086	else
838	{	1087	{
839	now_floor = mn_now;	1088	now_floor = mn_now;
840	rt_now = ev_time ();	1089	ev_rt_now = ev_time ();
841	return 1;	1090	return 1;
842	}	1091	}
843	}	1092	}
844		1093
845	static void	1094	static void
…		…
854	{	1103	{
855	ev_tstamp odiff = rtmn_diff;	1104	ev_tstamp odiff = rtmn_diff;
856		1105
857	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
858	{	1107	{
859	rtmn_diff = rt_now - mn_now;	1108	rtmn_diff = ev_rt_now - mn_now;
860		1109
861	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
862	return; /* all is well */	1111	return; /* all is well */
863		1112
864	rt_now = ev_time ();	1113	ev_rt_now = ev_time ();
865	mn_now = get_clock ();	1114	mn_now = get_clock ();
866	now_floor = mn_now;	1115	now_floor = mn_now;
867	}	1116	}
868		1117
		1118	# if EV_PERIODICS
869	periodics_reschedule (EV_A);	1119	periodics_reschedule (EV_A);
		1120	# endif
870	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
871	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
872	}	1123	}
873	}	1124	}
874	else	1125	else
875	#endif	1126	#endif
876	{	1127	{
877	rt_now = ev_time ();	1128	ev_rt_now = ev_time ();
878		1129
879	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
880	{	1131	{
		1132	#if EV_PERIODICS
881	periodics_reschedule (EV_A);	1133	periodics_reschedule (EV_A);
		1134	#endif
882		1135
883	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
884	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
885	timers [i]->at += rt_now - mn_now;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
886	}	1139	}
887		1140
888	mn_now = rt_now;	1141	mn_now = ev_rt_now;
889	}	1142	}
890	}	1143	}
891		1144
892	void	1145	void
893	ev_ref (EV_P)	1146	ev_ref (EV_P)
…		…
916	{	1169	{
917	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
918	call_pending (EV_A);	1171	call_pending (EV_A);
919	}	1172	}
920		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
921	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
922	fd_reify (EV_A);	1179	fd_reify (EV_A);
923		1180
924	/* calculate blocking time */	1181	/* calculate blocking time */
925		1182
926	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
927	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
928	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
929	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
930	time_update_monotonic (EV_A);	1187	time_update_monotonic (EV_A);
931	else	1188	else
932	#endif	1189	#endif
933	{	1190	{
934	rt_now = ev_time ();	1191	ev_rt_now = ev_time ();
935	mn_now = rt_now;	1192	mn_now = ev_rt_now;
936	}	1193	}
937		1194
938	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
939	block = 0.;	1196	block = 0.;
940	else	1197	else
941	{	1198	{
942	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
943		1200
944	if (timercnt)	1201	if (timercnt)
945	{	1202	{
946	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
947	if (block > to) block = to;	1204	if (block > to) block = to;
948	}	1205	}
949		1206
		1207	#if EV_PERIODICS
950	if (periodiccnt)	1208	if (periodiccnt)
951	{	1209	{
952	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
953	if (block > to) block = to;	1211	if (block > to) block = to;
954	}	1212	}
		1213	#endif
955		1214
956	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
957	}	1216	}
958		1217
959	method_poll (EV_A_ block);	1218	method_poll (EV_A_ block);
960		1219
961	/* update rt_now, do magic */	1220	/* update ev_rt_now, do magic */
962	time_update (EV_A);	1221	time_update (EV_A);
963		1222
964	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
965	timers_reify (EV_A); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
966	periodics_reify (EV_A); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
967		1228
968	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
969	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
970	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
971		1232
972	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
973	if (checkcnt)	1234	if (checkcnt)
974	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1049	return;	1310	return;
1050		1311
1051	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
1052		1313
1053	ev_start (EV_A_ (W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
1054	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1055	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1056		1317
1057	fd_change (EV_A_ fd);	1318	fd_change (EV_A_ fd);
1058	}	1319	}
1059		1320
…		…
1062	{	1323	{
1063	ev_clear_pending (EV_A_ (W)w);	1324	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
1065	return;	1326	return;
1066		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
1067	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1068	ev_stop (EV_A_ (W)w);	1331	ev_stop (EV_A_ (W)w);
1069		1332
1070	fd_change (EV_A_ w->fd);	1333	fd_change (EV_A_ w->fd);
1071	}	1334	}
…		…
1074	ev_timer_start (EV_P_ struct ev_timer *w)	1337	ev_timer_start (EV_P_ struct ev_timer *w)
1075	{	1338	{
1076	if (ev_is_active (w))	1339	if (ev_is_active (w))
1077	return;	1340	return;
1078		1341
1079	w->at += mn_now;	1342	((WT)w)->at += mn_now;
1080		1343
1081	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1082		1345
1083	ev_start (EV_A_ (W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
1084	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1085	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
1086	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
		1350
		1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1087	}	1352	}
1088		1353
1089	void	1354	void
1090	ev_timer_stop (EV_P_ struct ev_timer *w)	1355	ev_timer_stop (EV_P_ struct ev_timer *w)
1091	{	1356	{
1092	ev_clear_pending (EV_A_ (W)w);	1357	ev_clear_pending (EV_A_ (W)w);
1093	if (!ev_is_active (w))	1358	if (!ev_is_active (w))
1094	return;	1359	return;
1095		1360
		1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1362
1096	if (w->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
1097	{	1364	{
1098	timers [w->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
1099	downheap ((WT *)timers, timercnt, w->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1100	}	1367	}
1101		1368
1102	w->at = w->repeat;	1369	((WT)w)->at -= mn_now;
1103		1370
1104	ev_stop (EV_A_ (W)w);	1371	ev_stop (EV_A_ (W)w);
1105	}	1372	}
1106		1373
1107	void	1374	void
…		…
1109	{	1376	{
1110	if (ev_is_active (w))	1377	if (ev_is_active (w))
1111	{	1378	{
1112	if (w->repeat)	1379	if (w->repeat)
1113	{	1380	{
1114	w->at = mn_now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
1115	downheap ((WT *)timers, timercnt, w->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1116	}	1383	}
1117	else	1384	else
1118	ev_timer_stop (EV_A_ w);	1385	ev_timer_stop (EV_A_ w);
1119	}	1386	}
1120	else if (w->repeat)	1387	else if (w->repeat)
		1388	{
		1389	w->at = w->repeat;
1121	ev_timer_start (EV_A_ w);	1390	ev_timer_start (EV_A_ w);
		1391	}
1122	}	1392	}
1123		1393
		1394	#if EV_PERIODICS
1124	void	1395	void
1125	ev_periodic_start (EV_P_ struct ev_periodic *w)	1396	ev_periodic_start (EV_P_ struct ev_periodic *w)
1126	{	1397	{
1127	if (ev_is_active (w))	1398	if (ev_is_active (w))
1128	return;	1399	return;
1129		1400
		1401	if (w->reschedule_cb)
		1402	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1403	else if (w->interval)
		1404	{
1130	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1405	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1131
1132	/* this formula differs from the one in periodic_reify because we do not always round up */	1406	/* this formula differs from the one in periodic_reify because we do not always round up */
1133	if (w->interval)
1134	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1407	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1408	}
1135		1409
1136	ev_start (EV_A_ (W)w, ++periodiccnt);	1410	ev_start (EV_A_ (W)w, ++periodiccnt);
1137	array_needsize (periodics, periodicmax, periodiccnt, );	1411	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1138	periodics [periodiccnt - 1] = w;	1412	periodics [periodiccnt - 1] = w;
1139	upheap ((WT *)periodics, periodiccnt - 1);	1413	upheap ((WT *)periodics, periodiccnt - 1);
		1414
		1415	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1140	}	1416	}
1141		1417
1142	void	1418	void
1143	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1419	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1144	{	1420	{
1145	ev_clear_pending (EV_A_ (W)w);	1421	ev_clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))	1422	if (!ev_is_active (w))
1147	return;	1423	return;
1148		1424
		1425	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1426
1149	if (w->active < periodiccnt--)	1427	if (((W)w)->active < periodiccnt--)
1150	{	1428	{
1151	periodics [w->active - 1] = periodics [periodiccnt];	1429	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1152	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1430	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1153	}	1431	}
1154		1432
1155	ev_stop (EV_A_ (W)w);	1433	ev_stop (EV_A_ (W)w);
1156	}	1434	}
1157		1435
1158	void	1436	void
		1437	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1438	{
		1439	/* TODO: use adjustheap and recalculation */
		1440	ev_periodic_stop (EV_A_ w);
		1441	ev_periodic_start (EV_A_ w);
		1442	}
		1443	#endif
		1444
		1445	void
1159	ev_idle_start (EV_P_ struct ev_idle *w)	1446	ev_idle_start (EV_P_ struct ev_idle *w)
1160	{	1447	{
1161	if (ev_is_active (w))	1448	if (ev_is_active (w))
1162	return;	1449	return;
1163		1450
1164	ev_start (EV_A_ (W)w, ++idlecnt);	1451	ev_start (EV_A_ (W)w, ++idlecnt);
1165	array_needsize (idles, idlemax, idlecnt, );	1452	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1166	idles [idlecnt - 1] = w;	1453	idles [idlecnt - 1] = w;
1167	}	1454	}
1168		1455
1169	void	1456	void
1170	ev_idle_stop (EV_P_ struct ev_idle *w)	1457	ev_idle_stop (EV_P_ struct ev_idle *w)
1171	{	1458	{
1172	ev_clear_pending (EV_A_ (W)w);	1459	ev_clear_pending (EV_A_ (W)w);
		1460	if (!ev_is_active (w))
		1461	return;
		1462
		1463	idles [((W)w)->active - 1] = idles [--idlecnt];
		1464	ev_stop (EV_A_ (W)w);
		1465	}
		1466
		1467	void
		1468	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1469	{
1173	if (ev_is_active (w))	1470	if (ev_is_active (w))
1174	return;	1471	return;
1175		1472
1176	idles [w->active - 1] = idles [--idlecnt];	1473	ev_start (EV_A_ (W)w, ++preparecnt);
		1474	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1475	prepares [preparecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (!ev_is_active (w))
		1483	return;
		1484
		1485	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1177	ev_stop (EV_A_ (W)w);	1486	ev_stop (EV_A_ (W)w);
1178	}	1487	}
1179		1488
1180	void	1489	void
1181	ev_prepare_start (EV_P_ struct ev_prepare *w)	1490	ev_check_start (EV_P_ struct ev_check *w)
1182	{	1491	{
1183	if (ev_is_active (w))	1492	if (ev_is_active (w))
1184	return;	1493	return;
1185		1494
1186	ev_start (EV_A_ (W)w, ++preparecnt);	1495	ev_start (EV_A_ (W)w, ++checkcnt);
1187	array_needsize (prepares, preparemax, preparecnt, );	1496	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1188	prepares [preparecnt - 1] = w;	1497	checks [checkcnt - 1] = w;
1189	}	1498	}
1190		1499
1191	void	1500	void
1192	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1501	ev_check_stop (EV_P_ struct ev_check *w)
1193	{	1502	{
1194	ev_clear_pending (EV_A_ (W)w);	1503	ev_clear_pending (EV_A_ (W)w);
1195	if (ev_is_active (w))	1504	if (!ev_is_active (w))
1196	return;	1505	return;
1197		1506
1198	prepares [w->active - 1] = prepares [--preparecnt];
1199	ev_stop (EV_A_ (W)w);
1200	}
1201
1202	void
1203	ev_check_start (EV_P_ struct ev_check *w)
1204	{
1205	if (ev_is_active (w))
1206	return;
1207
1208	ev_start (EV_A_ (W)w, ++checkcnt);
1209	array_needsize (checks, checkmax, checkcnt, );
1210	checks [checkcnt - 1] = w;
1211	}
1212
1213	void
1214	ev_check_stop (EV_P_ struct ev_check *w)
1215	{
1216	ev_clear_pending (EV_A_ (W)w);
1217	if (ev_is_active (w))
1218	return;
1219
1220	checks [w->active - 1] = checks [--checkcnt];	1507	checks [((W)w)->active - 1] = checks [--checkcnt];
1221	ev_stop (EV_A_ (W)w);	1508	ev_stop (EV_A_ (W)w);
1222	}	1509	}
1223		1510
1224	#ifndef SA_RESTART	1511	#ifndef SA_RESTART
1225	# define SA_RESTART 0	1512	# define SA_RESTART 0
…		…
1235	return;	1522	return;
1236		1523
1237	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1524	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1238		1525
1239	ev_start (EV_A_ (W)w, 1);	1526	ev_start (EV_A_ (W)w, 1);
1240	array_needsize (signals, signalmax, w->signum, signals_init);	1527	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1241	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1528	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1242		1529
1243	if (!w->next)	1530	if (!((WL)w)->next)
1244	{	1531	{
		1532	#if _WIN32
		1533	signal (w->signum, sighandler);
		1534	#else
1245	struct sigaction sa;	1535	struct sigaction sa;
1246	sa.sa_handler = sighandler;	1536	sa.sa_handler = sighandler;
1247	sigfillset (&sa.sa_mask);	1537	sigfillset (&sa.sa_mask);
1248	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1538	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1249	sigaction (w->signum, &sa, 0);	1539	sigaction (w->signum, &sa, 0);
		1540	#endif
1250	}	1541	}
1251	}	1542	}
1252		1543
1253	void	1544	void
1254	ev_signal_stop (EV_P_ struct ev_signal *w)	1545	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1279		1570
1280	void	1571	void
1281	ev_child_stop (EV_P_ struct ev_child *w)	1572	ev_child_stop (EV_P_ struct ev_child *w)
1282	{	1573	{
1283	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1284	if (ev_is_active (w))	1575	if (!ev_is_active (w))
1285	return;	1576	return;
1286		1577
1287	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1578	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1288	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1289	}	1580	}
…		…
1304	void (cb)(int revents, void arg) = once->cb;	1595	void (cb)(int revents, void arg) = once->cb;
1305	void *arg = once->arg;	1596	void *arg = once->arg;
1306		1597
1307	ev_io_stop (EV_A_ &once->io);	1598	ev_io_stop (EV_A_ &once->io);
1308	ev_timer_stop (EV_A_ &once->to);	1599	ev_timer_stop (EV_A_ &once->to);
1309	free (once);	1600	ev_free (once);
1310		1601
1311	cb (revents, arg);	1602	cb (revents, arg);
1312	}	1603	}
1313		1604
1314	static void	1605	static void
…		…
1324	}	1615	}
1325		1616
1326	void	1617	void
1327	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1618	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1328	{	1619	{
1329	struct ev_once *once = malloc (sizeof (struct ev_once));	1620	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1330		1621
1331	if (!once)	1622	if (!once)
1332	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1623	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1333	else	1624	else
1334	{	1625	{
1335	once->cb = cb;	1626	once->cb = cb;
1336	once->arg = arg;	1627	once->arg = arg;
1337		1628
1338	ev_watcher_init (&once->io, once_cb_io);	1629	ev_init (&once->io, once_cb_io);
1339	if (fd >= 0)	1630	if (fd >= 0)
1340	{	1631	{
1341	ev_io_set (&once->io, fd, events);	1632	ev_io_set (&once->io, fd, events);
1342	ev_io_start (EV_A_ &once->io);	1633	ev_io_start (EV_A_ &once->io);
1343	}	1634	}
1344		1635
1345	ev_watcher_init (&once->to, once_cb_to);	1636	ev_init (&once->to, once_cb_to);
1346	if (timeout >= 0.)	1637	if (timeout >= 0.)
1347	{	1638	{
1348	ev_timer_set (&once->to, timeout, 0.);	1639	ev_timer_set (&once->to, timeout, 0.);
1349	ev_timer_start (EV_A_ &once->to);	1640	ev_timer_start (EV_A_ &once->to);
1350	}	1641	}
1351	}	1642	}
1352	}	1643	}
1353		1644
		1645	#ifdef __cplusplus
		1646	}
		1647	#endif
		1648

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Comparing libev/ev.c (file contents): Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs. Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC