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

Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.109 by root, Mon Nov 12 05:53:55 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_USE_POLL	103	#ifndef EV_USE_POLL
64	# define EV_USE_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 EMPTY /* required for microsofts broken pseudo-c compiler */
		173
114	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
117		177
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
120	/*****************************************************************************/	184	/*****************************************************************************/
121		185
		186	static void (syserr_cb)(const char msg);
		187
		188	void ev_set_syserr_cb (void (cb)(const char msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void (alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void (cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
122	typedef struct	234	typedef struct
123	{	235	{
124	struct ev_watcher_list *head;	236	WL head;
125	unsigned char events;	237	unsigned char events;
126	unsigned char reify;	238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
127	} ANFD;	242	} ANFD;
128		243
129	typedef struct	244	typedef struct
130	{	245	{
131	W w;	246	W w;
132	int events;	247	int events;
133	} ANPENDING;	248	} ANPENDING;
134		249
135	#if EV_MULTIPLICITY	250	#if EV_MULTIPLICITY
136		251
137	struct ev_loop	252	struct ev_loop
138	{	253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	256	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	257	#include "ev_vars.h"
141	};
142	# undef VAR	258	#undef VAR
		259	};
143	# include "ev_wrap.h"	260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
144		264
145	#else	265	#else
146		266
		267	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	268	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	269	#include "ev_vars.h"
149	# undef VAR	270	#undef VAR
		271
		272	static int default_loop;
150		273
151	#endif	274	#endif
152		275
153	/*****************************************************************************/	276	/*****************************************************************************/
154		277
155	inline ev_tstamp	278	ev_tstamp
156	ev_time (void)	279	ev_time (void)
157	{	280	{
158	#if EV_USE_REALTIME	281	#if EV_USE_REALTIME
159	struct timespec ts;	282	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	283	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	302	#endif
180		303
181	return ev_time ();	304	return ev_time ();
182	}	305	}
183		306
		307	#if EV_MULTIPLICITY
184	ev_tstamp	308	ev_tstamp
185	ev_now (EV_P)	309	ev_now (EV_P)
186	{	310	{
187	return rt_now;	311	return ev_rt_now;
188	}	312	}
		313	#endif
189		314
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		316
192	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
194	{ \	319	{ \
195	int newcnt = cur; \	320	int newcnt = cur; \
196	do \	321	do \
197	{ \	322	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	324	} \
200	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
201	\	326	\
202	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	329	cur = newcnt; \
205	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		342
207	/*****************************************************************************/	343	/*****************************************************************************/
208		344
209	static void	345	static void
210	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
…		…
217		353
218	++base;	354	++base;
219	}	355	}
220	}	356	}
221		357
222	static void	358	void
223	event (EV_P_ W w, int events)	359	ev_feed_event (EV_P_ void *w, int revents)
224	{	360	{
		361	W w_ = (W)w;
		362
225	if (w->pending)	363	if (w_->pending)
226	{	364	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	366	return;
229	}	367	}
230		368
231	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	373	}
236		374
237	static void	375	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	377	{
240	int i;	378	int i;
241		379
242	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
244	}	382	}
245		383
246	static void	384	inline void
247	fd_event (EV_P_ int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
248	{	386	{
249	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	388	struct ev_io *w;
251		389
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	391	{
254	int ev = w->events & events;	392	int ev = w->events & revents;
255		393
256	if (ev)	394	if (ev)
257	event (EV_A_ (W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
258	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
259	}	403	}
260		404
261	/*****************************************************************************/	405	/*****************************************************************************/
262		406
263	static void	407	static void
…		…
274	int events = 0;	418	int events = 0;
275		419
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	421	events \|= w->events;
278		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
279	anfd->reify = 0;	432	anfd->reify = 0;
280		433
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	435	anfd->events = events;
285	}
286	}	436	}
287		437
288	fdchangecnt = 0;	438	fdchangecnt = 0;
289	}	439	}
290		440
291	static void	441	static void
292	fd_change (EV_P_ int fd)	442	fd_change (EV_P_ int fd)
293	{	443	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
295	return;	445	return;
296		446
297	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
298		448
299	++fdchangecnt;	449	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
302	}	452	}
303		453
304	static void	454	static void
305	fd_kill (EV_P_ int fd)	455	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	457	struct ev_io *w;
308		458
309	while ((w = (struct ev_io *)anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
310	{	460	{
311	ev_io_stop (EV_A_ w);	461	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
314	}	474	}
315		475
316	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
317	static void	477	static void
318	fd_ebadf (EV_P)	478	fd_ebadf (EV_P)
319	{	479	{
320	int fd;	480	int fd;
321		481
322	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	483	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	485	fd_kill (EV_A_ fd);
326	}	486	}
327		487
328	/* called on ENOMEM in select/poll to kill some fds and retry */	488	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	489	static void
330	fd_enomem (EV_P)	490	fd_enomem (EV_P)
331	{	491	{
332	int fd = anfdmax;	492	int fd;
333		493
334	while (fd--)	494	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	495	if (anfds [fd].events)
336	{	496	{
337	close (fd);
338	fd_kill (EV_A_ fd);	497	fd_kill (EV_A_ fd);
339	return;	498	return;
340	}	499	}
341	}	500	}
342		501
343	/* susually called after fork if method needs to re-arm all fds from scratch */	502	/* usually called after fork if method needs to re-arm all fds from scratch */
344	static void	503	static void
345	fd_rearm_all (EV_P)	504	fd_rearm_all (EV_P)
346	{	505	{
347	int fd;	506	int fd;
348		507
349	/* this should be highly optimised to not do anything but set a flag */	508	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	509	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	510	if (anfds [fd].events)
352	{	511	{
353	anfds [fd].events = 0;	512	anfds [fd].events = 0;
354	fd_change (fd);	513	fd_change (EV_A_ fd);
355	}	514	}
356	}	515	}
357		516
358	/*****************************************************************************/	517	/*****************************************************************************/
359		518
…		…
363	WT w = heap [k];	522	WT w = heap [k];
364		523
365	while (k && heap [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
366	{	525	{
367	heap [k] = heap [k >> 1];	526	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
369	k >>= 1;	528	k >>= 1;
370	}	529	}
371		530
372	heap [k] = w;	531	heap [k] = w;
373	heap [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
374		533
375	}	534	}
376		535
377	static void	536	static void
378	downheap (WT *heap, int N, int k)	537	downheap (WT *heap, int N, int k)
…		…
388		547
389	if (w->at <= heap [j]->at)	548	if (w->at <= heap [j]->at)
390	break;	549	break;
391		550
392	heap [k] = heap [j];	551	heap [k] = heap [j];
393	heap [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
394	k = j;	553	k = j;
395	}	554	}
396		555
397	heap [k] = w;	556	heap [k] = w;
398	heap [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
399	}	565	}
400		566
401	/*****************************************************************************/	567	/*****************************************************************************/
402		568
403	typedef struct	569	typedef struct
404	{	570	{
405	struct ev_watcher_list *head;	571	WL head;
406	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
407	} ANSIG;	573	} ANSIG;
408		574
409	static ANSIG *signals;	575	static ANSIG *signals;
410	static int signalmax;	576	static int signalmax;
…		…
426	}	592	}
427		593
428	static void	594	static void
429	sighandler (int signum)	595	sighandler (int signum)
430	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
431	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
432		602
433	if (!gotsig)	603	if (!gotsig)
434	{	604	{
435	int old_errno = errno;	605	int old_errno = errno;
…		…
437	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
438	errno = old_errno;	608	errno = old_errno;
439	}	609	}
440	}	610	}
441		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 \|\| signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
442	static void	632	static void
443	sigcb (EV_P_ struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
444	{	634	{
445	struct ev_watcher_list *w;
446	int signum;	635	int signum;
447		636
448	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
449	gotsig = 0;	638	gotsig = 0;
450		639
451	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
452	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
453	{	642	ev_feed_signal_event (EV_A_ signum + 1);
454	signals [signum].gotsig = 0;	643	}
455		644
456	for (w = signals [signum].head; w; w = w->next)	645	inline void
457	event (EV_A_ (W)w, EV_SIGNAL);	646	fd_intern (int fd)
458	}	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
		652	fcntl (fd, F_SETFD, FD_CLOEXEC);
		653	fcntl (fd, F_SETFL, O_NONBLOCK);
		654	#endif
459	}	655	}
460		656
461	static void	657	static void
462	siginit (EV_P)	658	siginit (EV_P)
463	{	659	{
464	#ifndef WIN32	660	fd_intern (sigpipe [0]);
465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	fd_intern (sigpipe [1]);
466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
467
468	/* rather than sort out wether we really need nb, set it */
469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
471	#endif
472		662
473	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
474	ev_io_start (EV_A_ &sigev);	664	ev_io_start (EV_A_ &sigev);
475	ev_unref (EV_A); /* child watcher should not keep loop alive */	665	ev_unref (EV_A); /* child watcher should not keep loop alive */
476	}	666	}
477		667
478	/*****************************************************************************/	668	/*****************************************************************************/
479		669
480	#ifndef WIN32
481
482	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
483	static struct ev_signal childev;	674	static struct ev_signal childev;
484		675
485	#ifndef WCONTINUED	676	#ifndef WCONTINUED
486	# define WCONTINUED 0	677	# define WCONTINUED 0
487	#endif	678	#endif
…		…
492	struct ev_child *w;	683	struct ev_child *w;
493		684
494	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
495	if (w->pid == pid \|\| !w->pid)	686	if (w->pid == pid \|\| !w->pid)
496	{	687	{
497	w->priority = sw->priority; /* need to do it now */	688	ev_priority (w) = ev_priority (sw); /* need to do it now */
498	w->rpid = pid;	689	w->rpid = pid;
499	w->rstatus = status;	690	w->rstatus = status;
500	event (EV_A_ (W)w, EV_CHILD);	691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
501	}	692	}
502	}	693	}
503		694
504	static void	695	static void
505	childcb (EV_P_ struct ev_signal *sw, int revents)	696	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
507	int pid, status;	698	int pid, status;
508		699
509	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
510	{	701	{
511	/* make sure we are called again until all childs have been reaped */	702	/* make sure we are called again until all childs have been reaped */
512	event (EV_A_ (W)sw, EV_SIGNAL);	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
513		704
514	child_reap (EV_A_ sw, pid, pid, status);	705	child_reap (EV_A_ sw, pid, pid, status);
515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
516	}	707	}
517	}	708	}
…		…
547		738
548	/* return true if we are running with elevated privileges and should ignore env variables */	739	/* return true if we are running with elevated privileges and should ignore env variables */
549	static int	740	static int
550	enable_secure (void)	741	enable_secure (void)
551	{	742	{
552	#ifdef WIN32	743	#ifdef _WIN32
553	return 0;	744	return 0;
554	#else	745	#else
555	return getuid () != geteuid ()	746	return getuid () != geteuid ()
556	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
557	#endif	748	#endif
…		…
562	{	753	{
563	return method;	754	return method;
564	}	755	}
565		756
566	static void	757	static void
567	loop_init (EV_P_ int methods)	758	loop_init (EV_P_ unsigned int flags)
568	{	759	{
569	if (!method)	760	if (!method)
570	{	761	{
571	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
572	{	763	{
…		…
574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
575	have_monotonic = 1;	766	have_monotonic = 1;
576	}	767	}
577	#endif	768	#endif
578		769
579	rt_now = ev_time ();	770	ev_rt_now = ev_time ();
580	mn_now = get_clock ();	771	mn_now = get_clock ();
581	now_floor = mn_now;	772	now_floor = mn_now;
582	rtmn_diff = rt_now - mn_now;	773	rtmn_diff = ev_rt_now - mn_now;
583		774
584	if (methods == EVMETHOD_AUTO)	775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
585	if (!enable_secure () && getenv ("LIBEV_METHODS"))
586	methods = atoi (getenv ("LIBEV_METHODS"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
587	else	777
588	methods = EVMETHOD_ANY;	778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
589		780
590	method = 0;	781	method = 0;
591	#if EV_USE_KQUEUE	782	#if EV_USE_KQUEUE
592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
593	#endif	784	#endif
594	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
596	#endif	787	#endif
597	#if EV_USE_POLL	788	#if EV_USE_POLL
598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
599	#endif	790	#endif
600	#if EV_USE_SELECT	791	#if EV_USE_SELECT
601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
602	#endif	793	#endif
		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
603	}	797	}
604	}	798	}
605		799
606	void	800	void
607	loop_destroy (EV_P)	801	loop_destroy (EV_P)
608	{	802	{
		803	int i;
		804
609	#if EV_USE_KQUEUE	805	#if EV_USE_KQUEUE
610	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
611	#endif	807	#endif
612	#if EV_USE_EPOLL	808	#if EV_USE_EPOLL
613	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
617	#endif	813	#endif
618	#if EV_USE_SELECT	814	#if EV_USE_SELECT
619	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
620	#endif	816	#endif
621		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
622	method = 0;	831	method = 0;
623	/TODO/
624	}	832	}
625		833
626	void	834	static void
627	loop_fork (EV_P)	835	loop_fork (EV_P)
628	{	836	{
629	/TODO/
630	#if EV_USE_EPOLL	837	#if EV_USE_EPOLL
631	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
632	#endif	839	#endif
633	#if EV_USE_KQUEUE	840	#if EV_USE_KQUEUE
634	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
635	#endif	842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
636	}	860	}
637		861
638	#if EV_MULTIPLICITY	862	#if EV_MULTIPLICITY
639	struct ev_loop *	863	struct ev_loop *
640	ev_loop_new (int methods)	864	ev_loop_new (unsigned int flags)
641	{	865	{
642	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	866	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
643		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
644	loop_init (EV_A_ methods);	870	loop_init (EV_A_ flags);
645		871
646	if (ev_methods (EV_A))	872	if (ev_method (EV_A))
647	return loop;	873	return loop;
648		874
649	return 0;	875	return 0;
650	}	876	}
651		877
652	void	878	void
653	ev_loop_destroy (EV_P)	879	ev_loop_destroy (EV_P)
654	{	880	{
655	loop_destroy (EV_A);	881	loop_destroy (EV_A);
656	free (loop);	882	ev_free (loop);
657	}	883	}
658		884
659	void	885	void
660	ev_loop_fork (EV_P)	886	ev_loop_fork (EV_P)
661	{	887	{
662	loop_fork (EV_A);	888	postfork = 1;
663	}	889	}
664		890
665	#endif	891	#endif
666		892
667	#if EV_MULTIPLICITY	893	#if EV_MULTIPLICITY
668	struct ev_loop default_loop_struct;
669	static struct ev_loop *default_loop;
670
671	struct ev_loop *	894	struct ev_loop *
672	#else	895	#else
673	static int default_loop;
674
675	int	896	int
676	#endif	897	#endif
677	ev_default_loop (int methods)	898	ev_default_loop (unsigned int flags)
678	{	899	{
679	if (sigpipe [0] == sigpipe [1])	900	if (sigpipe [0] == sigpipe [1])
680	if (pipe (sigpipe))	901	if (pipe (sigpipe))
681	return 0;	902	return 0;
682		903
…		…
690		911
691	loop_init (EV_A_ methods);	912	loop_init (EV_A_ methods);
692		913
693	if (ev_method (EV_A))	914	if (ev_method (EV_A))
694	{	915	{
695	ev_watcher_init (&sigev, sigcb);
696	ev_set_priority (&sigev, EV_MAXPRI);
697	siginit (EV_A);	916	siginit (EV_A);
698		917
699	#ifndef WIN32	918	#ifndef _WIN32
700	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
701	ev_set_priority (&childev, EV_MAXPRI);	920	ev_set_priority (&childev, EV_MAXPRI);
702	ev_signal_start (EV_A_ &childev);	921	ev_signal_start (EV_A_ &childev);
703	ev_unref (EV_A); /* child watcher should not keep loop alive */	922	ev_unref (EV_A); /* child watcher should not keep loop alive */
704	#endif	923	#endif
…		…
715	{	934	{
716	#if EV_MULTIPLICITY	935	#if EV_MULTIPLICITY
717	struct ev_loop *loop = default_loop;	936	struct ev_loop *loop = default_loop;
718	#endif	937	#endif
719		938
		939	#ifndef _WIN32
720	ev_ref (EV_A); /* child watcher */	940	ev_ref (EV_A); /* child watcher */
721	ev_signal_stop (EV_A_ &childev);	941	ev_signal_stop (EV_A_ &childev);
		942	#endif
722		943
723	ev_ref (EV_A); /* signal watcher */	944	ev_ref (EV_A); /* signal watcher */
724	ev_io_stop (EV_A_ &sigev);	945	ev_io_stop (EV_A_ &sigev);
725		946
726	close (sigpipe [0]); sigpipe [0] = 0;	947	close (sigpipe [0]); sigpipe [0] = 0;
…		…
728		949
729	loop_destroy (EV_A);	950	loop_destroy (EV_A);
730	}	951	}
731		952
732	void	953	void
733	ev_default_fork (EV_P)	954	ev_default_fork (void)
734	{	955	{
735	loop_fork (EV_A);	956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
736		959
737	ev_io_stop (EV_A_ &sigev);	960	if (method)
738	close (sigpipe [0]);	961	postfork = 1;
739	close (sigpipe [1]);
740	pipe (sigpipe);
741
742	ev_ref (EV_A); /* signal watcher */
743	siginit (EV_A);
744	}	962	}
745		963
746	/*****************************************************************************/	964	/*****************************************************************************/
		965
		966	static int
		967	any_pending (EV_P)
		968	{
		969	int pri;
		970
		971	for (pri = NUMPRI; pri--; )
		972	if (pendingcnt [pri])
		973	return 1;
		974
		975	return 0;
		976	}
747		977
748	static void	978	static void
749	call_pending (EV_P)	979	call_pending (EV_P)
750	{	980	{
751	int pri;	981	int pri;
…		…
756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
757		987
758	if (p->w)	988	if (p->w)
759	{	989	{
760	p->w->pending = 0;	990	p->w->pending = 0;
761	p->w->cb (EV_A_ p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
762	}	992	}
763	}	993	}
764	}	994	}
765		995
766	static void	996	static void
767	timers_reify (EV_P)	997	timers_reify (EV_P)
768	{	998	{
769	while (timercnt && timers [0]->at <= mn_now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
770	{	1000	{
771	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
		1002
		1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
772		1004
773	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
774	if (w->repeat)	1006	if (w->repeat)
775	{	1007	{
776	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
777	w->at = mn_now + w->repeat;	1010	((WT)w)->at += w->repeat;
		1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
778	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
779	}	1015	}
780	else	1016	else
781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
782		1018
783	event (EV_A_ (W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
784	}	1020	}
785	}	1021	}
786		1022
		1023	#if EV_PERIODICS
787	static void	1024	static void
788	periodics_reify (EV_P)	1025	periodics_reify (EV_P)
789	{	1026	{
790	while (periodiccnt && periodics [0]->at <= rt_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
791	{	1028	{
792	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
793		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
794	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
795	if (w->interval)	1034	if (w->reschedule_cb)
796	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
797	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
798	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
799	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
800	}	1045	}
801	else	1046	else
802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
803		1048
804	event (EV_A_ (W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
805	}	1050	}
806	}	1051	}
807		1052
808	static void	1053	static void
809	periodics_reschedule (EV_P)	1054	periodics_reschedule (EV_P)
…		…
813	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
814	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
815	{	1060	{
816	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
817		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
818	if (w->interval)	1065	else if (w->interval)
819	{
820	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
821
822	if (fabs (diff) >= 1e-4)
823	{
824	ev_periodic_stop (EV_A_ w);
825	ev_periodic_start (EV_A_ w);
826
827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
828	}
829	}
830	}	1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
831	}	1072	}
		1073	#endif
832		1074
833	inline int	1075	inline int
834	time_update_monotonic (EV_P)	1076	time_update_monotonic (EV_P)
835	{	1077	{
836	mn_now = get_clock ();	1078	mn_now = get_clock ();
837		1079
838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
839	{	1081	{
840	rt_now = rtmn_diff + mn_now;	1082	ev_rt_now = rtmn_diff + mn_now;
841	return 0;	1083	return 0;
842	}	1084	}
843	else	1085	else
844	{	1086	{
845	now_floor = mn_now;	1087	now_floor = mn_now;
846	rt_now = ev_time ();	1088	ev_rt_now = ev_time ();
847	return 1;	1089	return 1;
848	}	1090	}
849	}	1091	}
850		1092
851	static void	1093	static void
…		…
860	{	1102	{
861	ev_tstamp odiff = rtmn_diff;	1103	ev_tstamp odiff = rtmn_diff;
862		1104
863	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
864	{	1106	{
865	rtmn_diff = rt_now - mn_now;	1107	rtmn_diff = ev_rt_now - mn_now;
866		1108
867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
868	return; /* all is well */	1110	return; /* all is well */
869		1111
870	rt_now = ev_time ();	1112	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1113	mn_now = get_clock ();
872	now_floor = mn_now;	1114	now_floor = mn_now;
873	}	1115	}
874		1116
		1117	# if EV_PERIODICS
875	periodics_reschedule (EV_A);	1118	periodics_reschedule (EV_A);
		1119	# endif
876	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
878	}	1122	}
879	}	1123	}
880	else	1124	else
881	#endif	1125	#endif
882	{	1126	{
883	rt_now = ev_time ();	1127	ev_rt_now = ev_time ();
884		1128
885	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1129	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
886	{	1130	{
		1131	#if EV_PERIODICS
887	periodics_reschedule (EV_A);	1132	periodics_reschedule (EV_A);
		1133	#endif
888		1134
889	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
890	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
891	timers [i]->at += rt_now - mn_now;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
892	}	1138	}
893		1139
894	mn_now = rt_now;	1140	mn_now = ev_rt_now;
895	}	1141	}
896	}	1142	}
897		1143
898	void	1144	void
899	ev_ref (EV_P)	1145	ev_ref (EV_P)
…		…
922	{	1168	{
923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
924	call_pending (EV_A);	1170	call_pending (EV_A);
925	}	1171	}
926		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
927	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
928	fd_reify (EV_A);	1178	fd_reify (EV_A);
929		1179
930	/* calculate blocking time */	1180	/* calculate blocking time */
931		1181
932	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
933	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
934	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
935	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
936	time_update_monotonic (EV_A);	1186	time_update_monotonic (EV_A);
937	else	1187	else
938	#endif	1188	#endif
939	{	1189	{
940	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
941	mn_now = rt_now;	1191	mn_now = ev_rt_now;
942	}	1192	}
943		1193
944	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
945	block = 0.;	1195	block = 0.;
946	else	1196	else
947	{	1197	{
948	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
949		1199
950	if (timercnt)	1200	if (timercnt)
951	{	1201	{
952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
953	if (block > to) block = to;	1203	if (block > to) block = to;
954	}	1204	}
955		1205
		1206	#if EV_PERIODICS
956	if (periodiccnt)	1207	if (periodiccnt)
957	{	1208	{
958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
959	if (block > to) block = to;	1210	if (block > to) block = to;
960	}	1211	}
		1212	#endif
961		1213
962	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
963	}	1215	}
964		1216
965	method_poll (EV_A_ block);	1217	method_poll (EV_A_ block);
966		1218
967	/* update rt_now, do magic */	1219	/* update ev_rt_now, do magic */
968	time_update (EV_A);	1220	time_update (EV_A);
969		1221
970	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
971	timers_reify (EV_A); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
972	periodics_reify (EV_A); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
973		1227
974	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
975	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
977		1231
978	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
979	if (checkcnt)	1233	if (checkcnt)
980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1055	return;	1309	return;
1056		1310
1057	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
1058		1312
1059	ev_start (EV_A_ (W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1062		1316
1063	fd_change (EV_A_ fd);	1317	fd_change (EV_A_ fd);
1064	}	1318	}
1065		1319
…		…
1068	{	1322	{
1069	ev_clear_pending (EV_A_ (W)w);	1323	ev_clear_pending (EV_A_ (W)w);
1070	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
1071	return;	1325	return;
1072		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1074	ev_stop (EV_A_ (W)w);	1330	ev_stop (EV_A_ (W)w);
1075		1331
1076	fd_change (EV_A_ w->fd);	1332	fd_change (EV_A_ w->fd);
1077	}	1333	}
…		…
1080	ev_timer_start (EV_P_ struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
1081	{	1337	{
1082	if (ev_is_active (w))	1338	if (ev_is_active (w))
1083	return;	1339	return;
1084		1340
1085	w->at += mn_now;	1341	((WT)w)->at += mn_now;
1086		1342
1087	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1088		1344
1089	ev_start (EV_A_ (W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
1090	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1091	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
1092	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1093	}	1351	}
1094		1352
1095	void	1353	void
1096	ev_timer_stop (EV_P_ struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
1097	{	1355	{
1098	ev_clear_pending (EV_A_ (W)w);	1356	ev_clear_pending (EV_A_ (W)w);
1099	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
1100	return;	1358	return;
1101		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
1102	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
1103	{	1363	{
1104	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
1105	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1106	}	1366	}
1107		1367
1108	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
1109		1369
1110	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1111	}	1371	}
1112		1372
1113	void	1373	void
…		…
1115	{	1375	{
1116	if (ev_is_active (w))	1376	if (ev_is_active (w))
1117	{	1377	{
1118	if (w->repeat)	1378	if (w->repeat)
1119	{	1379	{
1120	w->at = mn_now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
1121	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1122	}	1382	}
1123	else	1383	else
1124	ev_timer_stop (EV_A_ w);	1384	ev_timer_stop (EV_A_ w);
1125	}	1385	}
1126	else if (w->repeat)	1386	else if (w->repeat)
1127	ev_timer_start (EV_A_ w);	1387	ev_timer_start (EV_A_ w);
1128	}	1388	}
1129		1389
		1390	#if EV_PERIODICS
1130	void	1391	void
1131	ev_periodic_start (EV_P_ struct ev_periodic *w)	1392	ev_periodic_start (EV_P_ struct ev_periodic *w)
1132	{	1393	{
1133	if (ev_is_active (w))	1394	if (ev_is_active (w))
1134	return;	1395	return;
1135		1396
		1397	if (w->reschedule_cb)
		1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1399	else if (w->interval)
		1400	{
1136	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1401	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1137
1138	/* this formula differs from the one in periodic_reify because we do not always round up */	1402	/* this formula differs from the one in periodic_reify because we do not always round up */
1139	if (w->interval)
1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1404	}
1141		1405
1142	ev_start (EV_A_ (W)w, ++periodiccnt);	1406	ev_start (EV_A_ (W)w, ++periodiccnt);
1143	array_needsize (periodics, periodicmax, periodiccnt, );	1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1144	periodics [periodiccnt - 1] = w;	1408	periodics [periodiccnt - 1] = w;
1145	upheap ((WT *)periodics, periodiccnt - 1);	1409	upheap ((WT *)periodics, periodiccnt - 1);
		1410
		1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1146	}	1412	}
1147		1413
1148	void	1414	void
1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1415	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1150	{	1416	{
1151	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1152	if (!ev_is_active (w))	1418	if (!ev_is_active (w))
1153	return;	1419	return;
1154		1420
		1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1422
1155	if (w->active < periodiccnt--)	1423	if (((W)w)->active < periodiccnt--)
1156	{	1424	{
1157	periodics [w->active - 1] = periodics [periodiccnt];	1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1159	}	1427	}
1160		1428
1161	ev_stop (EV_A_ (W)w);	1429	ev_stop (EV_A_ (W)w);
1162	}	1430	}
1163		1431
1164	void	1432	void
		1433	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1434	{
		1435	/* TODO: use adjustheap and recalculation */
		1436	ev_periodic_stop (EV_A_ w);
		1437	ev_periodic_start (EV_A_ w);
		1438	}
		1439	#endif
		1440
		1441	void
1165	ev_idle_start (EV_P_ struct ev_idle *w)	1442	ev_idle_start (EV_P_ struct ev_idle *w)
1166	{	1443	{
1167	if (ev_is_active (w))	1444	if (ev_is_active (w))
1168	return;	1445	return;
1169		1446
1170	ev_start (EV_A_ (W)w, ++idlecnt);	1447	ev_start (EV_A_ (W)w, ++idlecnt);
1171	array_needsize (idles, idlemax, idlecnt, );	1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1172	idles [idlecnt - 1] = w;	1449	idles [idlecnt - 1] = w;
1173	}	1450	}
1174		1451
1175	void	1452	void
1176	ev_idle_stop (EV_P_ struct ev_idle *w)	1453	ev_idle_stop (EV_P_ struct ev_idle *w)
1177	{	1454	{
1178	ev_clear_pending (EV_A_ (W)w);	1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (!ev_is_active (w))
		1457	return;
		1458
		1459	idles [((W)w)->active - 1] = idles [--idlecnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	void
		1464	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1465	{
1179	if (ev_is_active (w))	1466	if (ev_is_active (w))
1180	return;	1467	return;
1181		1468
1182	idles [w->active - 1] = idles [--idlecnt];	1469	ev_start (EV_A_ (W)w, ++preparecnt);
		1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1471	prepares [preparecnt - 1] = w;
		1472	}
		1473
		1474	void
		1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1476	{
		1477	ev_clear_pending (EV_A_ (W)w);
		1478	if (!ev_is_active (w))
		1479	return;
		1480
		1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1183	ev_stop (EV_A_ (W)w);	1482	ev_stop (EV_A_ (W)w);
1184	}	1483	}
1185		1484
1186	void	1485	void
1187	ev_prepare_start (EV_P_ struct ev_prepare *w)	1486	ev_check_start (EV_P_ struct ev_check *w)
1188	{	1487	{
1189	if (ev_is_active (w))	1488	if (ev_is_active (w))
1190	return;	1489	return;
1191		1490
1192	ev_start (EV_A_ (W)w, ++preparecnt);	1491	ev_start (EV_A_ (W)w, ++checkcnt);
1193	array_needsize (prepares, preparemax, preparecnt, );	1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1194	prepares [preparecnt - 1] = w;	1493	checks [checkcnt - 1] = w;
1195	}	1494	}
1196		1495
1197	void	1496	void
1198	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1497	ev_check_stop (EV_P_ struct ev_check *w)
1199	{	1498	{
1200	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1201	if (ev_is_active (w))	1500	if (!ev_is_active (w))
1202	return;	1501	return;
1203		1502
1204	prepares [w->active - 1] = prepares [--preparecnt];
1205	ev_stop (EV_A_ (W)w);
1206	}
1207
1208	void
1209	ev_check_start (EV_P_ struct ev_check *w)
1210	{
1211	if (ev_is_active (w))
1212	return;
1213
1214	ev_start (EV_A_ (W)w, ++checkcnt);
1215	array_needsize (checks, checkmax, checkcnt, );
1216	checks [checkcnt - 1] = w;
1217	}
1218
1219	void
1220	ev_check_stop (EV_P_ struct ev_check *w)
1221	{
1222	ev_clear_pending (EV_A_ (W)w);
1223	if (ev_is_active (w))
1224	return;
1225
1226	checks [w->active - 1] = checks [--checkcnt];	1503	checks [((W)w)->active - 1] = checks [--checkcnt];
1227	ev_stop (EV_A_ (W)w);	1504	ev_stop (EV_A_ (W)w);
1228	}	1505	}
1229		1506
1230	#ifndef SA_RESTART	1507	#ifndef SA_RESTART
1231	# define SA_RESTART 0	1508	# define SA_RESTART 0
…		…
1241	return;	1518	return;
1242		1519
1243	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1244		1521
1245	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
1246	array_needsize (signals, signalmax, w->signum, signals_init);	1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1248		1525
1249	if (!w->next)	1526	if (!((WL)w)->next)
1250	{	1527	{
		1528	#if _WIN32
		1529	signal (w->signum, sighandler);
		1530	#else
1251	struct sigaction sa;	1531	struct sigaction sa;
1252	sa.sa_handler = sighandler;	1532	sa.sa_handler = sighandler;
1253	sigfillset (&sa.sa_mask);	1533	sigfillset (&sa.sa_mask);
1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1255	sigaction (w->signum, &sa, 0);	1535	sigaction (w->signum, &sa, 0);
		1536	#endif
1256	}	1537	}
1257	}	1538	}
1258		1539
1259	void	1540	void
1260	ev_signal_stop (EV_P_ struct ev_signal *w)	1541	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1285		1566
1286	void	1567	void
1287	ev_child_stop (EV_P_ struct ev_child *w)	1568	ev_child_stop (EV_P_ struct ev_child *w)
1288	{	1569	{
1289	ev_clear_pending (EV_A_ (W)w);	1570	ev_clear_pending (EV_A_ (W)w);
1290	if (ev_is_active (w))	1571	if (!ev_is_active (w))
1291	return;	1572	return;
1292		1573
1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1294	ev_stop (EV_A_ (W)w);	1575	ev_stop (EV_A_ (W)w);
1295	}	1576	}
…		…
1310	void (cb)(int revents, void arg) = once->cb;	1591	void (cb)(int revents, void arg) = once->cb;
1311	void *arg = once->arg;	1592	void *arg = once->arg;
1312		1593
1313	ev_io_stop (EV_A_ &once->io);	1594	ev_io_stop (EV_A_ &once->io);
1314	ev_timer_stop (EV_A_ &once->to);	1595	ev_timer_stop (EV_A_ &once->to);
1315	free (once);	1596	ev_free (once);
1316		1597
1317	cb (revents, arg);	1598	cb (revents, arg);
1318	}	1599	}
1319		1600
1320	static void	1601	static void
…		…
1330	}	1611	}
1331		1612
1332	void	1613	void
1333	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1334	{	1615	{
1335	struct ev_once *once = malloc (sizeof (struct ev_once));	1616	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1336		1617
1337	if (!once)	1618	if (!once)
1338	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1619	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1339	else	1620	else
1340	{	1621	{
1341	once->cb = cb;	1622	once->cb = cb;
1342	once->arg = arg;	1623	once->arg = arg;
1343		1624
1344	ev_watcher_init (&once->io, once_cb_io);	1625	ev_init (&once->io, once_cb_io);
1345	if (fd >= 0)	1626	if (fd >= 0)
1346	{	1627	{
1347	ev_io_set (&once->io, fd, events);	1628	ev_io_set (&once->io, fd, events);
1348	ev_io_start (EV_A_ &once->io);	1629	ev_io_start (EV_A_ &once->io);
1349	}	1630	}
1350		1631
1351	ev_watcher_init (&once->to, once_cb_to);	1632	ev_init (&once->to, once_cb_to);
1352	if (timeout >= 0.)	1633	if (timeout >= 0.)
1353	{	1634	{
1354	ev_timer_set (&once->to, timeout, 0.);	1635	ev_timer_set (&once->to, timeout, 0.);
1355	ev_timer_start (EV_A_ &once->to);	1636	ev_timer_start (EV_A_ &once->to);
1356	}	1637	}
1357	}	1638	}
1358	}	1639	}
1359		1640
		1641	#ifdef __cplusplus
		1642	}
		1643	#endif
		1644

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Comparing libev/ev.c (file contents): Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs. Revision 1.109 by root, Mon Nov 12 05:53:55 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.109 by root, Mon Nov 12 05:53:55 2007 UTC