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

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
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) && !defined (__APPLE__)
		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) && !defined (__APPLE__)
		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
…		…
84	#endif	128	#endif
85		129
86	#ifndef CLOCK_REALTIME	130	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	131	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	132	# define EV_USE_REALTIME 0
		133	#endif
		134
		135	#if EV_SELECT_IS_WINSOCKET
		136	# include <winsock.h>
89	#endif	137	#endif
90		138
91	/**/	139	/**/
92		140
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	141	#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) */	142	#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 */	143	#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 */	144	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		145
98	#ifndef EV_EMBED	146	#ifdef EV_H
		147	# include EV_H
		148	#else
99	# include "ev.h"	149	# include "ev.h"
100	#endif	150	#endif
101		151
102	#if __GNUC__ >= 3	152	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	153	# define expect(expr,value) __builtin_expect ((expr),(value))
…		…
111	#define expect_true(expr) expect ((expr) != 0, 1)	161	#define expect_true(expr) expect ((expr) != 0, 1)
112		162
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	163	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	164	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		165
		166	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		167
116	typedef struct ev_watcher *W;	168	typedef struct ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	169	typedef struct ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	170	typedef struct ev_watcher_time *WT;
119		171
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	172	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		173
		174	#ifdef _WIN32
		175	# include "ev_win32.c"
		176	#endif
		177
122	/*****************************************************************************/	178	/*****************************************************************************/
123		179
		180	static void (syserr_cb)(const char msg);
		181
		182	void ev_set_syserr_cb (void (cb)(const char msg))
		183	{
		184	syserr_cb = cb;
		185	}
		186
		187	static void
		188	syserr (const char *msg)
		189	{
		190	if (!msg)
		191	msg = "(libev) system error";
		192
		193	if (syserr_cb)
		194	syserr_cb (msg);
		195	else
		196	{
		197	perror (msg);
		198	abort ();
		199	}
		200	}
		201
		202	static void (alloc)(void *ptr, long size);
		203
		204	void ev_set_allocator (void (cb)(void *ptr, long size))
		205	{
		206	alloc = cb;
		207	}
		208
		209	static void *
		210	ev_realloc (void *ptr, long size)
		211	{
		212	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		213
		214	if (!ptr && size)
		215	{
		216	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		217	abort ();
		218	}
		219
		220	return ptr;
		221	}
		222
		223	#define ev_malloc(size) ev_realloc (0, (size))
		224	#define ev_free(ptr) ev_realloc ((ptr), 0)
		225
		226	/*****************************************************************************/
		227
124	typedef struct	228	typedef struct
125	{	229	{
126	struct ev_watcher_list *head;	230	WL head;
127	unsigned char events;	231	unsigned char events;
128	unsigned char reify;	232	unsigned char reify;
		233	#if EV_SELECT_IS_WINSOCKET
		234	SOCKET handle;
		235	#endif
129	} ANFD;	236	} ANFD;
130		237
131	typedef struct	238	typedef struct
132	{	239	{
133	W w;	240	W w;
134	int events;	241	int events;
135	} ANPENDING;	242	} ANPENDING;
136		243
137	#if EV_MULTIPLICITY	244	#if EV_MULTIPLICITY
138		245
139	struct ev_loop	246	struct ev_loop
140	{	247	{
		248	ev_tstamp ev_rt_now;
		249	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	250	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	251	#include "ev_vars.h"
143	};
144	# undef VAR	252	#undef VAR
		253	};
145	# include "ev_wrap.h"	254	#include "ev_wrap.h"
		255
		256	struct ev_loop default_loop_struct;
		257	static struct ev_loop *default_loop;
146		258
147	#else	259	#else
148		260
		261	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	262	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	263	#include "ev_vars.h"
151	# undef VAR	264	#undef VAR
		265
		266	static int default_loop;
152		267
153	#endif	268	#endif
154		269
155	/*****************************************************************************/	270	/*****************************************************************************/
156		271
157	inline ev_tstamp	272	ev_tstamp
158	ev_time (void)	273	ev_time (void)
159	{	274	{
160	#if EV_USE_REALTIME	275	#if EV_USE_REALTIME
161	struct timespec ts;	276	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	277	clock_gettime (CLOCK_REALTIME, &ts);
…		…
181	#endif	296	#endif
182		297
183	return ev_time ();	298	return ev_time ();
184	}	299	}
185		300
		301	#if EV_MULTIPLICITY
186	ev_tstamp	302	ev_tstamp
187	ev_now (EV_P)	303	ev_now (EV_P)
188	{	304	{
189	return rt_now;	305	return ev_rt_now;
190	}	306	}
		307	#endif
191		308
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	309	#define array_roundsize(type,n) ((n) \| 4 & ~3)
193		310
194	#define array_needsize(base,cur,cnt,init) \	311	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	312	if (expect_false ((cnt) > cur)) \
196	{ \	313	{ \
197	int newcnt = cur; \	314	int newcnt = cur; \
198	do \	315	do \
199	{ \	316	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	317	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	318	} \
202	while ((cnt) > newcnt); \	319	while ((cnt) > newcnt); \
203	\	320	\
204	base = realloc (base, sizeof (base) (newcnt)); \	321	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	322	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	323	cur = newcnt; \
207	}	324	}
		325
		326	#define array_slim(type,stem) \
		327	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		328	{ \
		329	stem ## max = array_roundsize (stem ## cnt >> 1); \
		330	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		331	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		332	}
		333
		334	#define array_free(stem, idx) \
		335	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
208		336
209	/*****************************************************************************/	337	/*****************************************************************************/
210		338
211	static void	339	static void
212	anfds_init (ANFD *base, int count)	340	anfds_init (ANFD *base, int count)
…		…
219		347
220	++base;	348	++base;
221	}	349	}
222	}	350	}
223		351
224	static void	352	void
225	event (EV_P_ W w, int events)	353	ev_feed_event (EV_P_ void *w, int revents)
226	{	354	{
		355	W w_ = (W)w;
		356
227	if (w->pending)	357	if (w_->pending)
228	{	358	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	359	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
230	return;	360	return;
231	}	361	}
232		362
233	w->pending = ++pendingcnt [ABSPRI (w)];	363	w_->pending = ++pendingcnt [ABSPRI (w_)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	364	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
235	pendings [ABSPRI (w)][w->pending - 1].w = w;	365	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
237	}	367	}
238		368
239	static void	369	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)	370	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{	371	{
242	int i;	372	int i;
243		373
244	for (i = 0; i < eventcnt; ++i)	374	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);	375	ev_feed_event (EV_A_ events [i], type);
246	}	376	}
247		377
248	static void	378	inline void
249	fd_event (EV_P_ int fd, int events)	379	fd_event (EV_P_ int fd, int revents)
250	{	380	{
251	ANFD *anfd = anfds + fd;	381	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	382	struct ev_io *w;
253		383
254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	384	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	{	385	{
256	int ev = w->events & events;	386	int ev = w->events & revents;
257		387
258	if (ev)	388	if (ev)
259	event (EV_A_ (W)w, ev);	389	ev_feed_event (EV_A_ (W)w, ev);
260	}	390	}
		391	}
		392
		393	void
		394	ev_feed_fd_event (EV_P_ int fd, int revents)
		395	{
		396	fd_event (EV_A_ fd, revents);
261	}	397	}
262		398
263	/*****************************************************************************/	399	/*****************************************************************************/
264		400
265	static void	401	static void
…		…
276	int events = 0;	412	int events = 0;
277		413
278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	414	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
279	events \|= w->events;	415	events \|= w->events;
280		416
		417	#if EV_SELECT_IS_WINSOCKET
		418	if (events)
		419	{
		420	unsigned long argp;
		421	anfd->handle = _get_osfhandle (fd);
		422	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		423	}
		424	#endif
		425
281	anfd->reify = 0;	426	anfd->reify = 0;
282		427
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	428	method_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	429	anfd->events = events;
287	}
288	}	430	}
289		431
290	fdchangecnt = 0;	432	fdchangecnt = 0;
291	}	433	}
292		434
293	static void	435	static void
294	fd_change (EV_P_ int fd)	436	fd_change (EV_P_ int fd)
295	{	437	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	438	if (anfds [fd].reify)
297	return;	439	return;
298		440
299	anfds [fd].reify = 1;	441	anfds [fd].reify = 1;
300		442
301	++fdchangecnt;	443	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	444	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
303	fdchanges [fdchangecnt - 1] = fd;	445	fdchanges [fdchangecnt - 1] = fd;
304	}	446	}
305		447
306	static void	448	static void
307	fd_kill (EV_P_ int fd)	449	fd_kill (EV_P_ int fd)
…		…
309	struct ev_io *w;	451	struct ev_io *w;
310		452
311	while ((w = (struct ev_io *)anfds [fd].head))	453	while ((w = (struct ev_io *)anfds [fd].head))
312	{	454	{
313	ev_io_stop (EV_A_ w);	455	ev_io_stop (EV_A_ w);
314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	456	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
315	}	457	}
		458	}
		459
		460	static int
		461	fd_valid (int fd)
		462	{
		463	#ifdef _WIN32
		464	return _get_osfhandle (fd) != -1;
		465	#else
		466	return fcntl (fd, F_GETFD) != -1;
		467	#endif
316	}	468	}
317		469
318	/* called on EBADF to verify fds */	470	/* called on EBADF to verify fds */
319	static void	471	static void
320	fd_ebadf (EV_P)	472	fd_ebadf (EV_P)
321	{	473	{
322	int fd;	474	int fd;
323		475
324	for (fd = 0; fd < anfdmax; ++fd)	476	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	477	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	478	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	479	fd_kill (EV_A_ fd);
328	}	480	}
329		481
330	/* called on ENOMEM in select/poll to kill some fds and retry */	482	/* called on ENOMEM in select/poll to kill some fds and retry */
331	static void	483	static void
332	fd_enomem (EV_P)	484	fd_enomem (EV_P)
333	{	485	{
334	int fd = anfdmax;	486	int fd;
335		487
336	while (fd--)	488	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	489	if (anfds [fd].events)
338	{	490	{
339	close (fd);
340	fd_kill (EV_A_ fd);	491	fd_kill (EV_A_ fd);
341	return;	492	return;
342	}	493	}
343	}	494	}
344		495
345	/* susually called after fork if method needs to re-arm all fds from scratch */	496	/* usually called after fork if method needs to re-arm all fds from scratch */
346	static void	497	static void
347	fd_rearm_all (EV_P)	498	fd_rearm_all (EV_P)
348	{	499	{
349	int fd;	500	int fd;
350		501
351	/* this should be highly optimised to not do anything but set a flag */	502	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	503	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	504	if (anfds [fd].events)
354	{	505	{
355	anfds [fd].events = 0;	506	anfds [fd].events = 0;
356	fd_change (fd);	507	fd_change (EV_A_ fd);
357	}	508	}
358	}	509	}
359		510
360	/*****************************************************************************/	511	/*****************************************************************************/
361		512
…		…
365	WT w = heap [k];	516	WT w = heap [k];
366		517
367	while (k && heap [k >> 1]->at > w->at)	518	while (k && heap [k >> 1]->at > w->at)
368	{	519	{
369	heap [k] = heap [k >> 1];	520	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	521	((W)heap [k])->active = k + 1;
371	k >>= 1;	522	k >>= 1;
372	}	523	}
373		524
374	heap [k] = w;	525	heap [k] = w;
375	heap [k]->active = k + 1;	526	((W)heap [k])->active = k + 1;
376		527
377	}	528	}
378		529
379	static void	530	static void
380	downheap (WT *heap, int N, int k)	531	downheap (WT *heap, int N, int k)
…		…
390		541
391	if (w->at <= heap [j]->at)	542	if (w->at <= heap [j]->at)
392	break;	543	break;
393		544
394	heap [k] = heap [j];	545	heap [k] = heap [j];
395	heap [k]->active = k + 1;	546	((W)heap [k])->active = k + 1;
396	k = j;	547	k = j;
397	}	548	}
398		549
399	heap [k] = w;	550	heap [k] = w;
400	heap [k]->active = k + 1;	551	((W)heap [k])->active = k + 1;
		552	}
		553
		554	inline void
		555	adjustheap (WT *heap, int N, int k)
		556	{
		557	upheap (heap, k);
		558	downheap (heap, N, k);
401	}	559	}
402		560
403	/*****************************************************************************/	561	/*****************************************************************************/
404		562
405	typedef struct	563	typedef struct
406	{	564	{
407	struct ev_watcher_list *head;	565	WL head;
408	sig_atomic_t volatile gotsig;	566	sig_atomic_t volatile gotsig;
409	} ANSIG;	567	} ANSIG;
410		568
411	static ANSIG *signals;	569	static ANSIG *signals;
412	static int signalmax;	570	static int signalmax;
413		571
414	static int sigpipe [2];	572	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	573	static sig_atomic_t volatile gotsig;
		574	static struct ev_io sigev;
416		575
417	static void	576	static void
418	signals_init (ANSIG *base, int count)	577	signals_init (ANSIG *base, int count)
419	{	578	{
420	while (count--)	579	while (count--)
…		…
427	}	586	}
428		587
429	static void	588	static void
430	sighandler (int signum)	589	sighandler (int signum)
431	{	590	{
		591	#if _WIN32
		592	signal (signum, sighandler);
		593	#endif
		594
432	signals [signum - 1].gotsig = 1;	595	signals [signum - 1].gotsig = 1;
433		596
434	if (!gotsig)	597	if (!gotsig)
435	{	598	{
436	int old_errno = errno;	599	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	601	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	602	errno = old_errno;
440	}	603	}
441	}	604	}
442		605
		606	void
		607	ev_feed_signal_event (EV_P_ int signum)
		608	{
		609	WL w;
		610
		611	#if EV_MULTIPLICITY
		612	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		613	#endif
		614
		615	--signum;
		616
		617	if (signum < 0 \|\| signum >= signalmax)
		618	return;
		619
		620	signals [signum].gotsig = 0;
		621
		622	for (w = signals [signum].head; w; w = w->next)
		623	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		624	}
		625
443	static void	626	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	627	sigcb (EV_P_ struct ev_io *iow, int revents)
445	{	628	{
446	struct ev_watcher_list *w;
447	int signum;	629	int signum;
448		630
449	read (sigpipe [0], &revents, 1);	631	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	632	gotsig = 0;
451		633
452	for (signum = signalmax; signum--; )	634	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	635	if (signals [signum].gotsig)
454	{	636	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;	637	}
456		638
457	for (w = signals [signum].head; w; w = w->next)	639	inline void
458	event (EV_A_ (W)w, EV_SIGNAL);	640	fd_intern (int fd)
459	}	641	{
		642	#ifdef _WIN32
		643	int arg = 1;
		644	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		645	#else
		646	fcntl (fd, F_SETFD, FD_CLOEXEC);
		647	fcntl (fd, F_SETFL, O_NONBLOCK);
		648	#endif
460	}	649	}
461		650
462	static void	651	static void
463	siginit (EV_P)	652	siginit (EV_P)
464	{	653	{
465	#ifndef WIN32	654	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	655	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		656
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	657	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	658	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	659	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	660	}
478		661
479	/*****************************************************************************/	662	/*****************************************************************************/
480		663
		664	static struct ev_child *childs [PID_HASHSIZE];
		665
481	#ifndef WIN32	666	#ifndef _WIN32
		667
		668	static struct ev_signal childev;
482		669
483	#ifndef WCONTINUED	670	#ifndef WCONTINUED
484	# define WCONTINUED 0	671	# define WCONTINUED 0
485	#endif	672	#endif
486		673
…		…
490	struct ev_child *w;	677	struct ev_child *w;
491		678
492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	679	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
493	if (w->pid == pid \|\| !w->pid)	680	if (w->pid == pid \|\| !w->pid)
494	{	681	{
495	w->priority = sw->priority; /* need to do it now */	682	ev_priority (w) = ev_priority (sw); /* need to do it now */
496	w->rpid = pid;	683	w->rpid = pid;
497	w->rstatus = status;	684	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);	685	ev_feed_event (EV_A_ (W)w, EV_CHILD);
499	}	686	}
500	}	687	}
501		688
502	static void	689	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	690	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
505	int pid, status;	692	int pid, status;
506		693
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	694	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	695	{
509	/* make sure we are called again until all childs have been reaped */	696	/* make sure we are called again until all childs have been reaped */
510	event (EV_A_ (W)sw, EV_SIGNAL);	697	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		698
512	child_reap (EV_A_ sw, pid, pid, status);	699	child_reap (EV_A_ sw, pid, pid, status);
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	700	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
514	}	701	}
515	}	702	}
…		…
522	# include "ev_kqueue.c"	709	# include "ev_kqueue.c"
523	#endif	710	#endif
524	#if EV_USE_EPOLL	711	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	712	# include "ev_epoll.c"
526	#endif	713	#endif
527	#if EV_USEV_POLL	714	#if EV_USE_POLL
528	# include "ev_poll.c"	715	# include "ev_poll.c"
529	#endif	716	#endif
530	#if EV_USE_SELECT	717	#if EV_USE_SELECT
531	# include "ev_select.c"	718	# include "ev_select.c"
532	#endif	719	#endif
…		…
545		732
546	/* return true if we are running with elevated privileges and should ignore env variables */	733	/* return true if we are running with elevated privileges and should ignore env variables */
547	static int	734	static int
548	enable_secure (void)	735	enable_secure (void)
549	{	736	{
550	#ifdef WIN32	737	#ifdef _WIN32
551	return 0;	738	return 0;
552	#else	739	#else
553	return getuid () != geteuid ()	740	return getuid () != geteuid ()
554	\|\| getgid () != getegid ();	741	\|\| getgid () != getegid ();
555	#endif	742	#endif
…		…
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	759	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	760	have_monotonic = 1;
574	}	761	}
575	#endif	762	#endif
576		763
577	rt_now = ev_time ();	764	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	765	mn_now = get_clock ();
579	now_floor = mn_now;	766	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	767	rtmn_diff = ev_rt_now - mn_now;
581		768
582	if (methods == EVMETHOD_AUTO)	769	if (methods == EVMETHOD_AUTO)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	770	if (!enable_secure () && getenv ("LIBEV_METHODS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	771	methods = atoi (getenv ("LIBEV_METHODS"));
585	else	772	else
…		…
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	777	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
591	#endif	778	#endif
592	#if EV_USE_EPOLL	779	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	780	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
594	#endif	781	#endif
595	#if EV_USEV_POLL	782	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	783	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
597	#endif	784	#endif
598	#if EV_USE_SELECT	785	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	786	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
600	#endif	787	#endif
		788
		789	ev_init (&sigev, sigcb);
		790	ev_set_priority (&sigev, EV_MAXPRI);
601	}	791	}
602	}	792	}
603		793
604	void	794	void
605	loop_destroy (EV_P)	795	loop_destroy (EV_P)
606	{	796	{
		797	int i;
		798
607	#if EV_USE_KQUEUE	799	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	800	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
609	#endif	801	#endif
610	#if EV_USE_EPOLL	802	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	803	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
612	#endif	804	#endif
613	#if EV_USEV_POLL	805	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	806	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
615	#endif	807	#endif
616	#if EV_USE_SELECT	808	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	809	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
618	#endif	810	#endif
619		811
		812	for (i = NUMPRI; i--; )
		813	array_free (pending, [i]);
		814
		815	/* have to use the microsoft-never-gets-it-right macro */
		816	array_free (fdchange, EMPTY);
		817	array_free (timer, EMPTY);
		818	#if EV_PERIODICS
		819	array_free (periodic, EMPTY);
		820	#endif
		821	array_free (idle, EMPTY);
		822	array_free (prepare, EMPTY);
		823	array_free (check, EMPTY);
		824
620	method = 0;	825	method = 0;
621	/TODO/
622	}	826	}
623		827
624	void	828	static void
625	loop_fork (EV_P)	829	loop_fork (EV_P)
626	{	830	{
627	/TODO/
628	#if EV_USE_EPOLL	831	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	832	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
630	#endif	833	#endif
631	#if EV_USE_KQUEUE	834	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	835	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
633	#endif	836	#endif
		837
		838	if (ev_is_active (&sigev))
		839	{
		840	/* default loop */
		841
		842	ev_ref (EV_A);
		843	ev_io_stop (EV_A_ &sigev);
		844	close (sigpipe [0]);
		845	close (sigpipe [1]);
		846
		847	while (pipe (sigpipe))
		848	syserr ("(libev) error creating pipe");
		849
		850	siginit (EV_A);
		851	}
		852
		853	postfork = 0;
634	}	854	}
635		855
636	#if EV_MULTIPLICITY	856	#if EV_MULTIPLICITY
637	struct ev_loop *	857	struct ev_loop *
638	ev_loop_new (int methods)	858	ev_loop_new (int methods)
639	{	859	{
640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	860	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		861
		862	memset (loop, 0, sizeof (struct ev_loop));
641		863
642	loop_init (EV_A_ methods);	864	loop_init (EV_A_ methods);
643		865
644	if (ev_methods (EV_A))	866	if (ev_method (EV_A))
645	return loop;	867	return loop;
646		868
647	return 0;	869	return 0;
648	}	870	}
649		871
650	void	872	void
651	ev_loop_destroy (EV_P)	873	ev_loop_destroy (EV_P)
652	{	874	{
653	loop_destroy (EV_A);	875	loop_destroy (EV_A);
654	free (loop);	876	ev_free (loop);
655	}	877	}
656		878
657	void	879	void
658	ev_loop_fork (EV_P)	880	ev_loop_fork (EV_P)
659	{	881	{
660	loop_fork (EV_A);	882	postfork = 1;
661	}	883	}
662		884
663	#endif	885	#endif
664		886
665	#if EV_MULTIPLICITY	887	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	888	struct ev_loop *
670	#else	889	#else
671	static int default_loop;
672
673	int	890	int
674	#endif	891	#endif
675	ev_default_loop (int methods)	892	ev_default_loop (int methods)
676	{	893	{
677	if (sigpipe [0] == sigpipe [1])	894	if (sigpipe [0] == sigpipe [1])
…		…
688		905
689	loop_init (EV_A_ methods);	906	loop_init (EV_A_ methods);
690		907
691	if (ev_method (EV_A))	908	if (ev_method (EV_A))
692	{	909	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	910	siginit (EV_A);
696		911
697	#ifndef WIN32	912	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	913	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	914	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	915	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	916	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	917	#endif
…		…
713	{	928	{
714	#if EV_MULTIPLICITY	929	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	930	struct ev_loop *loop = default_loop;
716	#endif	931	#endif
717		932
		933	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	934	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	935	ev_signal_stop (EV_A_ &childev);
		936	#endif
720		937
721	ev_ref (EV_A); /* signal watcher */	938	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	939	ev_io_stop (EV_A_ &sigev);
723		940
724	close (sigpipe [0]); sigpipe [0] = 0;	941	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		943
727	loop_destroy (EV_A);	944	loop_destroy (EV_A);
728	}	945	}
729		946
730	void	947	void
731	ev_default_fork (EV_P)	948	ev_default_fork (void)
732	{	949	{
733	loop_fork (EV_A);	950	#if EV_MULTIPLICITY
		951	struct ev_loop *loop = default_loop;
		952	#endif
734		953
735	ev_io_stop (EV_A_ &sigev);	954	if (method)
736	close (sigpipe [0]);	955	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	956	}
743		957
744	/*****************************************************************************/	958	/*****************************************************************************/
		959
		960	static int
		961	any_pending (EV_P)
		962	{
		963	int pri;
		964
		965	for (pri = NUMPRI; pri--; )
		966	if (pendingcnt [pri])
		967	return 1;
		968
		969	return 0;
		970	}
745		971
746	static void	972	static void
747	call_pending (EV_P)	973	call_pending (EV_P)
748	{	974	{
749	int pri;	975	int pri;
…		…
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	980	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		981
756	if (p->w)	982	if (p->w)
757	{	983	{
758	p->w->pending = 0;	984	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	985	EV_CB_INVOKE (p->w, p->events);
760	}	986	}
761	}	987	}
762	}	988	}
763		989
764	static void	990	static void
765	timers_reify (EV_P)	991	timers_reify (EV_P)
766	{	992	{
767	while (timercnt && timers [0]->at <= mn_now)	993	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	994	{
769	struct ev_timer *w = timers [0];	995	struct ev_timer *w = timers [0];
		996
		997	assert (("inactive timer on timer heap detected", ev_is_active (w)));
770		998
771	/* first reschedule or stop timer */	999	/* first reschedule or stop timer */
772	if (w->repeat)	1000	if (w->repeat)
773	{	1001	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1002	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1003
775	w->at = mn_now + w->repeat;	1004	((WT)w)->at += w->repeat;
		1005	if (((WT)w)->at < mn_now)
		1006	((WT)w)->at = mn_now;
		1007
776	downheap ((WT *)timers, timercnt, 0);	1008	downheap ((WT *)timers, timercnt, 0);
777	}	1009	}
778	else	1010	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1011	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1012
781	event (EV_A_ (W)w, EV_TIMEOUT);	1013	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1014	}
783	}	1015	}
784		1016
		1017	#if EV_PERIODICS
785	static void	1018	static void
786	periodics_reify (EV_P)	1019	periodics_reify (EV_P)
787	{	1020	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1021	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1022	{
790	struct ev_periodic *w = periodics [0];	1023	struct ev_periodic *w = periodics [0];
791		1024
		1025	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1026
792	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
793	if (w->interval)	1028	if (w->reschedule_cb)
794	{	1029	{
		1030	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1031
		1032	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1033	downheap ((WT *)periodics, periodiccnt, 0);
		1034	}
		1035	else if (w->interval)
		1036	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1037	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1038	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1039	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1040	}
799	else	1041	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1042	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1043
802	event (EV_A_ (W)w, EV_PERIODIC);	1044	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1045	}
804	}	1046	}
805		1047
806	static void	1048	static void
807	periodics_reschedule (EV_P)	1049	periodics_reschedule (EV_P)
…		…
811	/* adjust periodics after time jump */	1053	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1054	for (i = 0; i < periodiccnt; ++i)
813	{	1055	{
814	struct ev_periodic *w = periodics [i];	1056	struct ev_periodic *w = periodics [i];
815		1057
		1058	if (w->reschedule_cb)
		1059	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1060	else if (w->interval)
817	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1061	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1062	}
		1063
		1064	/* now rebuild the heap */
		1065	for (i = periodiccnt >> 1; i--; )
		1066	downheap ((WT *)periodics, periodiccnt, i);
829	}	1067	}
		1068	#endif
830		1069
831	inline int	1070	inline int
832	time_update_monotonic (EV_P)	1071	time_update_monotonic (EV_P)
833	{	1072	{
834	mn_now = get_clock ();	1073	mn_now = get_clock ();
835		1074
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1075	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1076	{
838	rt_now = rtmn_diff + mn_now;	1077	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1078	return 0;
840	}	1079	}
841	else	1080	else
842	{	1081	{
843	now_floor = mn_now;	1082	now_floor = mn_now;
844	rt_now = ev_time ();	1083	ev_rt_now = ev_time ();
845	return 1;	1084	return 1;
846	}	1085	}
847	}	1086	}
848		1087
849	static void	1088	static void
…		…
858	{	1097	{
859	ev_tstamp odiff = rtmn_diff;	1098	ev_tstamp odiff = rtmn_diff;
860		1099
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1100	for (i = 4; --i; ) /* loop a few times, before making important decisions */
862	{	1101	{
863	rtmn_diff = rt_now - mn_now;	1102	rtmn_diff = ev_rt_now - mn_now;
864		1103
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1104	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1105	return; /* all is well */
867		1106
868	rt_now = ev_time ();	1107	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1108	mn_now = get_clock ();
870	now_floor = mn_now;	1109	now_floor = mn_now;
871	}	1110	}
872		1111
		1112	# if EV_PERIODICS
873	periodics_reschedule (EV_A);	1113	periodics_reschedule (EV_A);
		1114	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1115	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1116	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1117	}
877	}	1118	}
878	else	1119	else
879	#endif	1120	#endif
880	{	1121	{
881	rt_now = ev_time ();	1122	ev_rt_now = ev_time ();
882		1123
883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1124	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1125	{
		1126	#if EV_PERIODICS
885	periodics_reschedule (EV_A);	1127	periodics_reschedule (EV_A);
		1128	#endif
886		1129
887	/* adjust timers. this is easy, as the offset is the same for all */	1130	/* adjust timers. this is easy, as the offset is the same for all */
888	for (i = 0; i < timercnt; ++i)	1131	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1132	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1133	}
891		1134
892	mn_now = rt_now;	1135	mn_now = ev_rt_now;
893	}	1136	}
894	}	1137	}
895		1138
896	void	1139	void
897	ev_ref (EV_P)	1140	ev_ref (EV_P)
…		…
920	{	1163	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1164	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1165	call_pending (EV_A);
923	}	1166	}
924		1167
		1168	/* we might have forked, so reify kernel state if necessary */
		1169	if (expect_false (postfork))
		1170	loop_fork (EV_A);
		1171
925	/* update fd-related kernel structures */	1172	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1173	fd_reify (EV_A);
927		1174
928	/* calculate blocking time */	1175	/* calculate blocking time */
929		1176
930	/* we only need this for !monotonic clockor timers, but as we basically	1177	/* we only need this for !monotonic clock or timers, but as we basically
931	always have timers, we just calculate it always */	1178	always have timers, we just calculate it always */
932	#if EV_USE_MONOTONIC	1179	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1180	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1181	time_update_monotonic (EV_A);
935	else	1182	else
936	#endif	1183	#endif
937	{	1184	{
938	rt_now = ev_time ();	1185	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1186	mn_now = ev_rt_now;
940	}	1187	}
941		1188
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1189	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;	1190	block = 0.;
944	else	1191	else
945	{	1192	{
946	block = MAX_BLOCKTIME;	1193	block = MAX_BLOCKTIME;
947		1194
948	if (timercnt)	1195	if (timercnt)
949	{	1196	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1197	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
951	if (block > to) block = to;	1198	if (block > to) block = to;
952	}	1199	}
953		1200
		1201	#if EV_PERIODICS
954	if (periodiccnt)	1202	if (periodiccnt)
955	{	1203	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1204	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
957	if (block > to) block = to;	1205	if (block > to) block = to;
958	}	1206	}
		1207	#endif
959		1208
960	if (block < 0.) block = 0.;	1209	if (block < 0.) block = 0.;
961	}	1210	}
962		1211
963	method_poll (EV_A_ block);	1212	method_poll (EV_A_ block);
964		1213
965	/* update rt_now, do magic */	1214	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1215	time_update (EV_A);
967		1216
968	/* queue pending timers and reschedule them */	1217	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1218	timers_reify (EV_A); /* relative timers called last */
		1219	#if EV_PERIODICS
970	periodics_reify (EV_A); /* absolute timers called first */	1220	periodics_reify (EV_A); /* absolute timers called first */
		1221	#endif
971		1222
972	/* queue idle watchers unless io or timers are pending */	1223	/* queue idle watchers unless io or timers are pending */
973	if (!pendingcnt)	1224	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1225	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1226
976	/* queue check watchers, to be executed first */	1227	/* queue check watchers, to be executed first */
977	if (checkcnt)	1228	if (checkcnt)
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1229	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1053	return;	1304	return;
1054		1305
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1306	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1307
1057	ev_start (EV_A_ (W)w, 1);	1308	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1309	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1310	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1311
1061	fd_change (EV_A_ fd);	1312	fd_change (EV_A_ fd);
1062	}	1313	}
1063		1314
…		…
1066	{	1317	{
1067	ev_clear_pending (EV_A_ (W)w);	1318	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1319	if (!ev_is_active (w))
1069	return;	1320	return;
1070		1321
		1322	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1323
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1324	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1325	ev_stop (EV_A_ (W)w);
1073		1326
1074	fd_change (EV_A_ w->fd);	1327	fd_change (EV_A_ w->fd);
1075	}	1328	}
…		…
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1331	ev_timer_start (EV_P_ struct ev_timer *w)
1079	{	1332	{
1080	if (ev_is_active (w))	1333	if (ev_is_active (w))
1081	return;	1334	return;
1082		1335
1083	w->at += mn_now;	1336	((WT)w)->at += mn_now;
1084		1337
1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1338	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086		1339
1087	ev_start (EV_A_ (W)w, ++timercnt);	1340	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1341	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1089	timers [timercnt - 1] = w;	1342	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1343	upheap ((WT *)timers, timercnt - 1);
		1344
		1345	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1091	}	1346	}
1092		1347
1093	void	1348	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1349	ev_timer_stop (EV_P_ struct ev_timer *w)
1095	{	1350	{
1096	ev_clear_pending (EV_A_ (W)w);	1351	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1352	if (!ev_is_active (w))
1098	return;	1353	return;
1099		1354
		1355	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1356
1100	if (w->active < timercnt--)	1357	if (((W)w)->active < timercnt--)
1101	{	1358	{
1102	timers [w->active - 1] = timers [timercnt];	1359	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1360	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1361	}
1105		1362
1106	w->at = w->repeat;	1363	((WT)w)->at -= mn_now;
1107		1364
1108	ev_stop (EV_A_ (W)w);	1365	ev_stop (EV_A_ (W)w);
1109	}	1366	}
1110		1367
1111	void	1368	void
…		…
1113	{	1370	{
1114	if (ev_is_active (w))	1371	if (ev_is_active (w))
1115	{	1372	{
1116	if (w->repeat)	1373	if (w->repeat)
1117	{	1374	{
1118	w->at = mn_now + w->repeat;	1375	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1376	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1377	}
1121	else	1378	else
1122	ev_timer_stop (EV_A_ w);	1379	ev_timer_stop (EV_A_ w);
1123	}	1380	}
1124	else if (w->repeat)	1381	else if (w->repeat)
1125	ev_timer_start (EV_A_ w);	1382	ev_timer_start (EV_A_ w);
1126	}	1383	}
1127		1384
		1385	#if EV_PERIODICS
1128	void	1386	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1387	ev_periodic_start (EV_P_ struct ev_periodic *w)
1130	{	1388	{
1131	if (ev_is_active (w))	1389	if (ev_is_active (w))
1132	return;	1390	return;
1133		1391
		1392	if (w->reschedule_cb)
		1393	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1394	else if (w->interval)
		1395	{
1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1396	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136	/* this formula differs from the one in periodic_reify because we do not always round up */	1397	/* this formula differs from the one in periodic_reify because we do not always round up */
1137	if (w->interval)
1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1398	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1399	}
1139		1400
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1401	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1402	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1142	periodics [periodiccnt - 1] = w;	1403	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1404	upheap ((WT *)periodics, periodiccnt - 1);
		1405
		1406	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1144	}	1407	}
1145		1408
1146	void	1409	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1410	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1148	{	1411	{
1149	ev_clear_pending (EV_A_ (W)w);	1412	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1413	if (!ev_is_active (w))
1151	return;	1414	return;
1152		1415
		1416	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1417
1153	if (w->active < periodiccnt--)	1418	if (((W)w)->active < periodiccnt--)
1154	{	1419	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1420	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1421	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1422	}
1158		1423
1159	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1160	}	1425	}
1161		1426
1162	void	1427	void
		1428	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1429	{
		1430	/* TODO: use adjustheap and recalculation */
		1431	ev_periodic_stop (EV_A_ w);
		1432	ev_periodic_start (EV_A_ w);
		1433	}
		1434	#endif
		1435
		1436	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1437	ev_idle_start (EV_P_ struct ev_idle *w)
1164	{	1438	{
1165	if (ev_is_active (w))	1439	if (ev_is_active (w))
1166	return;	1440	return;
1167		1441
1168	ev_start (EV_A_ (W)w, ++idlecnt);	1442	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );	1443	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1170	idles [idlecnt - 1] = w;	1444	idles [idlecnt - 1] = w;
1171	}	1445	}
1172		1446
1173	void	1447	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)	1448	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{	1449	{
1176	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
		1451	if (!ev_is_active (w))
		1452	return;
		1453
		1454	idles [((W)w)->active - 1] = idles [--idlecnt];
		1455	ev_stop (EV_A_ (W)w);
		1456	}
		1457
		1458	void
		1459	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1460	{
1177	if (ev_is_active (w))	1461	if (ev_is_active (w))
1178	return;	1462	return;
1179		1463
1180	idles [w->active - 1] = idles [--idlecnt];	1464	ev_start (EV_A_ (W)w, ++preparecnt);
		1465	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1466	prepares [preparecnt - 1] = w;
		1467	}
		1468
		1469	void
		1470	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1471	{
		1472	ev_clear_pending (EV_A_ (W)w);
		1473	if (!ev_is_active (w))
		1474	return;
		1475
		1476	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1181	ev_stop (EV_A_ (W)w);	1477	ev_stop (EV_A_ (W)w);
1182	}	1478	}
1183		1479
1184	void	1480	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)	1481	ev_check_start (EV_P_ struct ev_check *w)
1186	{	1482	{
1187	if (ev_is_active (w))	1483	if (ev_is_active (w))
1188	return;	1484	return;
1189		1485
1190	ev_start (EV_A_ (W)w, ++preparecnt);	1486	ev_start (EV_A_ (W)w, ++checkcnt);
1191	array_needsize (prepares, preparemax, preparecnt, );	1487	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1192	prepares [preparecnt - 1] = w;	1488	checks [checkcnt - 1] = w;
1193	}	1489	}
1194		1490
1195	void	1491	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1492	ev_check_stop (EV_P_ struct ev_check *w)
1197	{	1493	{
1198	ev_clear_pending (EV_A_ (W)w);	1494	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))	1495	if (!ev_is_active (w))
1200	return;	1496	return;
1201		1497
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];	1498	checks [((W)w)->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);	1499	ev_stop (EV_A_ (W)w);
1226	}	1500	}
1227		1501
1228	#ifndef SA_RESTART	1502	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1503	# define SA_RESTART 0
…		…
1239	return;	1513	return;
1240		1514
1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1515	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242		1516
1243	ev_start (EV_A_ (W)w, 1);	1517	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1518	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1519	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1520
1247	if (!w->next)	1521	if (!((WL)w)->next)
1248	{	1522	{
		1523	#if _WIN32
		1524	signal (w->signum, sighandler);
		1525	#else
1249	struct sigaction sa;	1526	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1527	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1528	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1529	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1530	sigaction (w->signum, &sa, 0);
		1531	#endif
1254	}	1532	}
1255	}	1533	}
1256		1534
1257	void	1535	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1536	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1283		1561
1284	void	1562	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1563	ev_child_stop (EV_P_ struct ev_child *w)
1286	{	1564	{
1287	ev_clear_pending (EV_A_ (W)w);	1565	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1566	if (!ev_is_active (w))
1289	return;	1567	return;
1290		1568
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1569	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1570	ev_stop (EV_A_ (W)w);
1293	}	1571	}
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1586	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1587	void *arg = once->arg;
1310		1588
1311	ev_io_stop (EV_A_ &once->io);	1589	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1590	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1591	ev_free (once);
1314		1592
1315	cb (revents, arg);	1593	cb (revents, arg);
1316	}	1594	}
1317		1595
1318	static void	1596	static void
…		…
1328	}	1606	}
1329		1607
1330	void	1608	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1332	{	1610	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1611	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1612
1335	if (!once)	1613	if (!once)
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1614	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1615	else
1338	{	1616	{
1339	once->cb = cb;	1617	once->cb = cb;
1340	once->arg = arg;	1618	once->arg = arg;
1341		1619
1342	ev_watcher_init (&once->io, once_cb_io);	1620	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1621	if (fd >= 0)
1344	{	1622	{
1345	ev_io_set (&once->io, fd, events);	1623	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1624	ev_io_start (EV_A_ &once->io);
1347	}	1625	}
1348		1626
1349	ev_watcher_init (&once->to, once_cb_to);	1627	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1628	if (timeout >= 0.)
1351	{	1629	{
1352	ev_timer_set (&once->to, timeout, 0.);	1630	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1631	ev_timer_start (EV_A_ &once->to);
1354	}	1632	}
1355	}	1633	}
1356	}	1634	}
1357		1635
		1636	#ifdef __cplusplus
		1637	}
		1638	#endif
		1639

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Comparing libev/ev.c (file contents): Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs. Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC