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

Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
57	#endif	96	#endif
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
61	#endif	101	#endif
62		102
63	#ifndef EV_USEV_POLL	103	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
65	#endif	109	#endif
66		110
67	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
69	#endif	113	#endif
…		…
75	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
77	#endif	121	#endif
78		122
79	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
80		130
81	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
84	#endif	134	#endif
85		135
86	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
89	#endif	143	#endif
90		144
91	/**/	145	/**/
92		146
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
98	#include "ev.h"	155	# include "ev.h"
		156	#endif
99		157
100	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	160	# define inline inline
103	#else	161	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
110		168
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		171
		172	#define 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;
411		577
412	static int sigpipe [2];	578	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	579	static sig_atomic_t volatile gotsig;
		580	static struct ev_io sigev;
414		581
415	static void	582	static void
416	signals_init (ANSIG *base, int count)	583	signals_init (ANSIG *base, int count)
417	{	584	{
418	while (count--)	585	while (count--)
…		…
425	}	592	}
426		593
427	static void	594	static void
428	sighandler (int signum)	595	sighandler (int signum)
429	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
430	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
431		602
432	if (!gotsig)	603	if (!gotsig)
433	{	604	{
434	int old_errno = errno;	605	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	608	errno = old_errno;
438	}	609	}
439	}	610	}
440		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
441	static void	632	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
443	{	634	{
444	struct ev_watcher_list *w;
445	int signum;	635	int signum;
446		636
447	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	638	gotsig = 0;
449		639
450	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
452	{	642	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;	643	}
454		644
455	for (w = signals [signum].head; w; w = w->next)	645	inline void
456	event (EV_A_ (W)w, EV_SIGNAL);	646	fd_intern (int fd)
457	}	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
458	}	655	}
459		656
460	static void	657	static void
461	siginit (EV_P)	658	siginit (EV_P)
462	{	659	{
463	#ifndef WIN32	660	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		662
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	664	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	665	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	666	}
476		667
477	/*****************************************************************************/	668	/*****************************************************************************/
478		669
		670	static struct ev_child *childs [PID_HASHSIZE];
		671
479	#ifndef WIN32	672	#ifndef _WIN32
		673
		674	static struct ev_signal childev;
480		675
481	#ifndef WCONTINUED	676	#ifndef WCONTINUED
482	# define WCONTINUED 0	677	# define WCONTINUED 0
483	#endif	678	#endif
484		679
…		…
488	struct ev_child *w;	683	struct ev_child *w;
489		684
490	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)
491	if (w->pid == pid \|\| !w->pid)	686	if (w->pid == pid \|\| !w->pid)
492	{	687	{
493	w->priority = sw->priority; /* need to do it now */	688	ev_priority (w) = ev_priority (sw); /* need to do it now */
494	w->rpid = pid;	689	w->rpid = pid;
495	w->rstatus = status;	690	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);	691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
497	}	692	}
498	}	693	}
499		694
500	static void	695	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	696	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
503	int pid, status;	698	int pid, status;
504		699
505	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
506	{	701	{
507	/* 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 */
508	event (EV_A_ (W)sw, EV_SIGNAL);	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		704
510	child_reap (EV_A_ sw, pid, pid, status);	705	child_reap (EV_A_ sw, pid, pid, status);
511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
512	}	707	}
513	}	708	}
…		…
520	# include "ev_kqueue.c"	715	# include "ev_kqueue.c"
521	#endif	716	#endif
522	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	718	# include "ev_epoll.c"
524	#endif	719	#endif
525	#if EV_USEV_POLL	720	#if EV_USE_POLL
526	# include "ev_poll.c"	721	# include "ev_poll.c"
527	#endif	722	#endif
528	#if EV_USE_SELECT	723	#if EV_USE_SELECT
529	# include "ev_select.c"	724	# include "ev_select.c"
530	#endif	725	#endif
…		…
543		738
544	/* 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 */
545	static int	740	static int
546	enable_secure (void)	741	enable_secure (void)
547	{	742	{
548	#ifdef WIN32	743	#ifdef _WIN32
549	return 0;	744	return 0;
550	#else	745	#else
551	return getuid () != geteuid ()	746	return getuid () != geteuid ()
552	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
553	#endif	748	#endif
554	}	749	}
555		750
556	int	751	unsigned int
557	ev_method (EV_P)	752	ev_method (EV_P)
558	{	753	{
559	return method;	754	return method;
560	}	755	}
561		756
562	static void	757	static void
563	loop_init (EV_P_ int methods)	758	loop_init (EV_P_ unsigned int flags)
564	{	759	{
565	if (!method)	760	if (!method)
566	{	761	{
567	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
568	{	763	{
…		…
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	766	have_monotonic = 1;
572	}	767	}
573	#endif	768	#endif
574		769
575	rt_now = ev_time ();	770	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	771	mn_now = get_clock ();
577	now_floor = mn_now;	772	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	773	rtmn_diff = ev_rt_now - mn_now;
579		774
580	if (methods == EVMETHOD_AUTO)	775	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else	777
584	methods = EVMETHOD_ANY;	778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
585		780
586	method = 0;	781	method = 0;
587	#if EV_USE_KQUEUE	782	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
589	#endif	784	#endif
590	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
592	#endif	787	#endif
593	#if EV_USEV_POLL	788	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
595	#endif	790	#endif
596	#if EV_USE_SELECT	791	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
598	#endif	793	#endif
		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
599	}	797	}
600	}	798	}
601		799
602	void	800	void
603	loop_destroy (EV_P)	801	loop_destroy (EV_P)
604	{	802	{
		803	int i;
		804
605	#if EV_USE_KQUEUE	805	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
607	#endif	807	#endif
608	#if EV_USE_EPOLL	808	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
610	#endif	810	#endif
611	#if EV_USEV_POLL	811	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
613	#endif	813	#endif
614	#if EV_USE_SELECT	814	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
616	#endif	816	#endif
617		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
618	method = 0;	831	method = 0;
619	/TODO/
620	}	832	}
621		833
622	void	834	static void
623	loop_fork (EV_P)	835	loop_fork (EV_P)
624	{	836	{
625	/TODO/
626	#if EV_USE_EPOLL	837	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
628	#endif	839	#endif
629	#if EV_USE_KQUEUE	840	#if EV_USE_KQUEUE
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
631	#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;
632	}	860	}
633		861
634	#if EV_MULTIPLICITY	862	#if EV_MULTIPLICITY
635	struct ev_loop *	863	struct ev_loop *
636	ev_loop_new (int methods)	864	ev_loop_new (unsigned int flags)
637	{	865	{
638	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));
639		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
640	loop_init (EV_A_ methods);	870	loop_init (EV_A_ flags);
641		871
642	if (ev_methods (EV_A))	872	if (ev_method (EV_A))
643	return loop;	873	return loop;
644		874
645	return 0;	875	return 0;
646	}	876	}
647		877
648	void	878	void
649	ev_loop_destroy (EV_P)	879	ev_loop_destroy (EV_P)
650	{	880	{
651	loop_destroy (EV_A);	881	loop_destroy (EV_A);
652	free (loop);	882	ev_free (loop);
653	}	883	}
654		884
655	void	885	void
656	ev_loop_fork (EV_P)	886	ev_loop_fork (EV_P)
657	{	887	{
658	loop_fork (EV_A);	888	postfork = 1;
659	}	889	}
660		890
661	#endif	891	#endif
662		892
663	#if EV_MULTIPLICITY	893	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	894	struct ev_loop *
668	#else	895	#else
669	static int default_loop;
670
671	int	896	int
672	#endif	897	#endif
673	ev_default_loop (int methods)	898	ev_default_loop (unsigned int flags)
674	{	899	{
675	if (sigpipe [0] == sigpipe [1])	900	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	901	if (pipe (sigpipe))
677	return 0;	902	return 0;
678		903
…		…
682	struct ev_loop *loop = default_loop = &default_loop_struct;	907	struct ev_loop *loop = default_loop = &default_loop_struct;
683	#else	908	#else
684	default_loop = 1;	909	default_loop = 1;
685	#endif	910	#endif
686		911
687	loop_init (EV_A_ methods);	912	loop_init (EV_A_ flags);
688		913
689	if (ev_method (EV_A))	914	if (ev_method (EV_A))
690	{	915	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	916	siginit (EV_A);
694		917
695	#ifndef WIN32	918	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	920	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	921	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	922	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	923	#endif
…		…
711	{	934	{
712	#if EV_MULTIPLICITY	935	#if EV_MULTIPLICITY
713	struct ev_loop *loop = default_loop;	936	struct ev_loop *loop = default_loop;
714	#endif	937	#endif
715		938
		939	#ifndef _WIN32
716	ev_ref (EV_A); /* child watcher */	940	ev_ref (EV_A); /* child watcher */
717	ev_signal_stop (EV_A_ &childev);	941	ev_signal_stop (EV_A_ &childev);
		942	#endif
718		943
719	ev_ref (EV_A); /* signal watcher */	944	ev_ref (EV_A); /* signal watcher */
720	ev_io_stop (EV_A_ &sigev);	945	ev_io_stop (EV_A_ &sigev);
721		946
722	close (sigpipe [0]); sigpipe [0] = 0;	947	close (sigpipe [0]); sigpipe [0] = 0;
…		…
724		949
725	loop_destroy (EV_A);	950	loop_destroy (EV_A);
726	}	951	}
727		952
728	void	953	void
729	ev_default_fork (EV_P)	954	ev_default_fork (void)
730	{	955	{
731	loop_fork (EV_A);	956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
732		959
733	ev_io_stop (EV_A_ &sigev);	960	if (method)
734	close (sigpipe [0]);	961	postfork = 1;
735	close (sigpipe [1]);
736	pipe (sigpipe);
737
738	ev_ref (EV_A); /* signal watcher */
739	siginit (EV_A);
740	}	962	}
741		963
742	/*****************************************************************************/	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	}
743		977
744	static void	978	static void
745	call_pending (EV_P)	979	call_pending (EV_P)
746	{	980	{
747	int pri;	981	int pri;
…		…
752	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753		987
754	if (p->w)	988	if (p->w)
755	{	989	{
756	p->w->pending = 0;	990	p->w->pending = 0;
757	p->w->cb (EV_A_ p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
758	}	992	}
759	}	993	}
760	}	994	}
761		995
762	static void	996	static void
763	timers_reify (EV_P)	997	timers_reify (EV_P)
764	{	998	{
765	while (timercnt && timers [0]->at <= mn_now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
766	{	1000	{
767	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)));
768		1004
769	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
770	if (w->repeat)	1006	if (w->repeat)
771	{	1007	{
772	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
773	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
774	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
775	}	1015	}
776	else	1016	else
777	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778		1018
779	event (EV_A_ (W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780	}	1020	}
781	}	1021	}
782		1022
		1023	#if EV_PERIODICS
783	static void	1024	static void
784	periodics_reify (EV_P)	1025	periodics_reify (EV_P)
785	{	1026	{
786	while (periodiccnt && periodics [0]->at <= rt_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787	{	1028	{
788	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
789		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
790	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
791	if (w->interval)	1034	if (w->reschedule_cb)
792	{	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	{
793	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;
794	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));
795	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
796	}	1045	}
797	else	1046	else
798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799		1048
800	event (EV_A_ (W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801	}	1050	}
802	}	1051	}
803		1052
804	static void	1053	static void
805	periodics_reschedule (EV_P)	1054	periodics_reschedule (EV_P)
…		…
809	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
810	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
811	{	1060	{
812	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
813		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814	if (w->interval)	1065	else if (w->interval)
815	{
816	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;
817
818	if (fabs (diff) >= 1e-4)
819	{
820	ev_periodic_stop (EV_A_ w);
821	ev_periodic_start (EV_A_ w);
822
823	i = 0; /* restart loop, inefficient, but time jumps should be rare */
824	}
825	}
826	}	1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
827	}	1072	}
		1073	#endif
828		1074
829	inline int	1075	inline int
830	time_update_monotonic (EV_P)	1076	time_update_monotonic (EV_P)
831	{	1077	{
832	mn_now = get_clock ();	1078	mn_now = get_clock ();
833		1079
834	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
835	{	1081	{
836	rt_now = rtmn_diff + mn_now;	1082	ev_rt_now = rtmn_diff + mn_now;
837	return 0;	1083	return 0;
838	}	1084	}
839	else	1085	else
840	{	1086	{
841	now_floor = mn_now;	1087	now_floor = mn_now;
842	rt_now = ev_time ();	1088	ev_rt_now = ev_time ();
843	return 1;	1089	return 1;
844	}	1090	}
845	}	1091	}
846		1092
847	static void	1093	static void
…		…
856	{	1102	{
857	ev_tstamp odiff = rtmn_diff;	1103	ev_tstamp odiff = rtmn_diff;
858		1104
859	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 */
860	{	1106	{
861	rtmn_diff = rt_now - mn_now;	1107	rtmn_diff = ev_rt_now - mn_now;
862		1108
863	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864	return; /* all is well */	1110	return; /* all is well */
865		1111
866	rt_now = ev_time ();	1112	ev_rt_now = ev_time ();
867	mn_now = get_clock ();	1113	mn_now = get_clock ();
868	now_floor = mn_now;	1114	now_floor = mn_now;
869	}	1115	}
870		1116
		1117	# if EV_PERIODICS
871	periodics_reschedule (EV_A);	1118	periodics_reschedule (EV_A);
		1119	# endif
872	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
874	}	1122	}
875	}	1123	}
876	else	1124	else
877	#endif	1125	#endif
878	{	1126	{
879	rt_now = ev_time ();	1127	ev_rt_now = ev_time ();
880		1128
881	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))
882	{	1130	{
		1131	#if EV_PERIODICS
883	periodics_reschedule (EV_A);	1132	periodics_reschedule (EV_A);
		1133	#endif
884		1134
885	/* 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 */
886	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
887	timers [i]->at += rt_now - mn_now;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
888	}	1138	}
889		1139
890	mn_now = rt_now;	1140	mn_now = ev_rt_now;
891	}	1141	}
892	}	1142	}
893		1143
894	void	1144	void
895	ev_ref (EV_P)	1145	ev_ref (EV_P)
…		…
918	{	1168	{
919	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920	call_pending (EV_A);	1170	call_pending (EV_A);
921	}	1171	}
922		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
923	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
924	fd_reify (EV_A);	1178	fd_reify (EV_A);
925		1179
926	/* calculate blocking time */	1180	/* calculate blocking time */
927		1181
928	/* 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
929	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
930	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
931	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
932	time_update_monotonic (EV_A);	1186	time_update_monotonic (EV_A);
933	else	1187	else
934	#endif	1188	#endif
935	{	1189	{
936	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
937	mn_now = rt_now;	1191	mn_now = ev_rt_now;
938	}	1192	}
939		1193
940	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
941	block = 0.;	1195	block = 0.;
942	else	1196	else
943	{	1197	{
944	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
945		1199
946	if (timercnt)	1200	if (timercnt)
947	{	1201	{
948	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
949	if (block > to) block = to;	1203	if (block > to) block = to;
950	}	1204	}
951		1205
		1206	#if EV_PERIODICS
952	if (periodiccnt)	1207	if (periodiccnt)
953	{	1208	{
954	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
955	if (block > to) block = to;	1210	if (block > to) block = to;
956	}	1211	}
		1212	#endif
957		1213
958	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
959	}	1215	}
960		1216
961	method_poll (EV_A_ block);	1217	method_poll (EV_A_ block);
962		1218
963	/* update rt_now, do magic */	1219	/* update ev_rt_now, do magic */
964	time_update (EV_A);	1220	time_update (EV_A);
965		1221
966	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
967	timers_reify (EV_A); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
968	periodics_reify (EV_A); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
969		1227
970	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
971	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
972	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
973		1231
974	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
975	if (checkcnt)	1233	if (checkcnt)
976	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1051	return;	1309	return;
1052		1310
1053	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
1054		1312
1055	ev_start (EV_A_ (W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1058		1316
1059	fd_change (EV_A_ fd);	1317	fd_change (EV_A_ fd);
1060	}	1318	}
1061		1319
…		…
1064	{	1322	{
1065	ev_clear_pending (EV_A_ (W)w);	1323	ev_clear_pending (EV_A_ (W)w);
1066	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
1067	return;	1325	return;
1068		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
1069	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1070	ev_stop (EV_A_ (W)w);	1330	ev_stop (EV_A_ (W)w);
1071		1331
1072	fd_change (EV_A_ w->fd);	1332	fd_change (EV_A_ w->fd);
1073	}	1333	}
…		…
1076	ev_timer_start (EV_P_ struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
1077	{	1337	{
1078	if (ev_is_active (w))	1338	if (ev_is_active (w))
1079	return;	1339	return;
1080		1340
1081	w->at += mn_now;	1341	((WT)w)->at += mn_now;
1082		1342
1083	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.));
1084		1344
1085	ev_start (EV_A_ (W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
1086	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1087	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
1088	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1089	}	1351	}
1090		1352
1091	void	1353	void
1092	ev_timer_stop (EV_P_ struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
1093	{	1355	{
1094	ev_clear_pending (EV_A_ (W)w);	1356	ev_clear_pending (EV_A_ (W)w);
1095	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
1096	return;	1358	return;
1097		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
1098	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
1099	{	1363	{
1100	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
1101	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1102	}	1366	}
1103		1367
1104	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
1105		1369
1106	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1107	}	1371	}
1108		1372
1109	void	1373	void
…		…
1111	{	1375	{
1112	if (ev_is_active (w))	1376	if (ev_is_active (w))
1113	{	1377	{
1114	if (w->repeat)	1378	if (w->repeat)
1115	{	1379	{
1116	w->at = mn_now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
1117	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1118	}	1382	}
1119	else	1383	else
1120	ev_timer_stop (EV_A_ w);	1384	ev_timer_stop (EV_A_ w);
1121	}	1385	}
1122	else if (w->repeat)	1386	else if (w->repeat)
		1387	{
		1388	w->at = w->repeat;
1123	ev_timer_start (EV_A_ w);	1389	ev_timer_start (EV_A_ w);
		1390	}
1124	}	1391	}
1125		1392
		1393	#if EV_PERIODICS
1126	void	1394	void
1127	ev_periodic_start (EV_P_ struct ev_periodic *w)	1395	ev_periodic_start (EV_P_ struct ev_periodic *w)
1128	{	1396	{
1129	if (ev_is_active (w))	1397	if (ev_is_active (w))
1130	return;	1398	return;
1131		1399
		1400	if (w->reschedule_cb)
		1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1402	else if (w->interval)
		1403	{
1132	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1404	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1133
1134	/* this formula differs from the one in periodic_reify because we do not always round up */	1405	/* this formula differs from the one in periodic_reify because we do not always round up */
1135	if (w->interval)
1136	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1406	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1407	}
1137		1408
1138	ev_start (EV_A_ (W)w, ++periodiccnt);	1409	ev_start (EV_A_ (W)w, ++periodiccnt);
1139	array_needsize (periodics, periodicmax, periodiccnt, );	1410	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1140	periodics [periodiccnt - 1] = w;	1411	periodics [periodiccnt - 1] = w;
1141	upheap ((WT *)periodics, periodiccnt - 1);	1412	upheap ((WT *)periodics, periodiccnt - 1);
		1413
		1414	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1142	}	1415	}
1143		1416
1144	void	1417	void
1145	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1418	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1146	{	1419	{
1147	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1148	if (!ev_is_active (w))	1421	if (!ev_is_active (w))
1149	return;	1422	return;
1150		1423
		1424	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1425
1151	if (w->active < periodiccnt--)	1426	if (((W)w)->active < periodiccnt--)
1152	{	1427	{
1153	periodics [w->active - 1] = periodics [periodiccnt];	1428	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1154	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1429	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1155	}	1430	}
1156		1431
1157	ev_stop (EV_A_ (W)w);	1432	ev_stop (EV_A_ (W)w);
1158	}	1433	}
1159		1434
1160	void	1435	void
		1436	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1437	{
		1438	/* TODO: use adjustheap and recalculation */
		1439	ev_periodic_stop (EV_A_ w);
		1440	ev_periodic_start (EV_A_ w);
		1441	}
		1442	#endif
		1443
		1444	void
1161	ev_idle_start (EV_P_ struct ev_idle *w)	1445	ev_idle_start (EV_P_ struct ev_idle *w)
1162	{	1446	{
1163	if (ev_is_active (w))	1447	if (ev_is_active (w))
1164	return;	1448	return;
1165		1449
1166	ev_start (EV_A_ (W)w, ++idlecnt);	1450	ev_start (EV_A_ (W)w, ++idlecnt);
1167	array_needsize (idles, idlemax, idlecnt, );	1451	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1168	idles [idlecnt - 1] = w;	1452	idles [idlecnt - 1] = w;
1169	}	1453	}
1170		1454
1171	void	1455	void
1172	ev_idle_stop (EV_P_ struct ev_idle *w)	1456	ev_idle_stop (EV_P_ struct ev_idle *w)
1173	{	1457	{
1174	ev_clear_pending (EV_A_ (W)w);	1458	ev_clear_pending (EV_A_ (W)w);
		1459	if (!ev_is_active (w))
		1460	return;
		1461
		1462	idles [((W)w)->active - 1] = idles [--idlecnt];
		1463	ev_stop (EV_A_ (W)w);
		1464	}
		1465
		1466	void
		1467	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1468	{
1175	if (ev_is_active (w))	1469	if (ev_is_active (w))
1176	return;	1470	return;
1177		1471
1178	idles [w->active - 1] = idles [--idlecnt];	1472	ev_start (EV_A_ (W)w, ++preparecnt);
		1473	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1474	prepares [preparecnt - 1] = w;
		1475	}
		1476
		1477	void
		1478	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1479	{
		1480	ev_clear_pending (EV_A_ (W)w);
		1481	if (!ev_is_active (w))
		1482	return;
		1483
		1484	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1179	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1180	}	1486	}
1181		1487
1182	void	1488	void
1183	ev_prepare_start (EV_P_ struct ev_prepare *w)	1489	ev_check_start (EV_P_ struct ev_check *w)
1184	{	1490	{
1185	if (ev_is_active (w))	1491	if (ev_is_active (w))
1186	return;	1492	return;
1187		1493
1188	ev_start (EV_A_ (W)w, ++preparecnt);	1494	ev_start (EV_A_ (W)w, ++checkcnt);
1189	array_needsize (prepares, preparemax, preparecnt, );	1495	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1190	prepares [preparecnt - 1] = w;	1496	checks [checkcnt - 1] = w;
1191	}	1497	}
1192		1498
1193	void	1499	void
1194	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1500	ev_check_stop (EV_P_ struct ev_check *w)
1195	{	1501	{
1196	ev_clear_pending (EV_A_ (W)w);	1502	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))	1503	if (!ev_is_active (w))
1198	return;	1504	return;
1199		1505
1200	prepares [w->active - 1] = prepares [--preparecnt];
1201	ev_stop (EV_A_ (W)w);
1202	}
1203
1204	void
1205	ev_check_start (EV_P_ struct ev_check *w)
1206	{
1207	if (ev_is_active (w))
1208	return;
1209
1210	ev_start (EV_A_ (W)w, ++checkcnt);
1211	array_needsize (checks, checkmax, checkcnt, );
1212	checks [checkcnt - 1] = w;
1213	}
1214
1215	void
1216	ev_check_stop (EV_P_ struct ev_check *w)
1217	{
1218	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))
1220	return;
1221
1222	checks [w->active - 1] = checks [--checkcnt];	1506	checks [((W)w)->active - 1] = checks [--checkcnt];
1223	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1224	}	1508	}
1225		1509
1226	#ifndef SA_RESTART	1510	#ifndef SA_RESTART
1227	# define SA_RESTART 0	1511	# define SA_RESTART 0
…		…
1237	return;	1521	return;
1238		1522
1239	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1523	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1240		1524
1241	ev_start (EV_A_ (W)w, 1);	1525	ev_start (EV_A_ (W)w, 1);
1242	array_needsize (signals, signalmax, w->signum, signals_init);	1526	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1243	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1527	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1244		1528
1245	if (!w->next)	1529	if (!((WL)w)->next)
1246	{	1530	{
		1531	#if _WIN32
		1532	signal (w->signum, sighandler);
		1533	#else
1247	struct sigaction sa;	1534	struct sigaction sa;
1248	sa.sa_handler = sighandler;	1535	sa.sa_handler = sighandler;
1249	sigfillset (&sa.sa_mask);	1536	sigfillset (&sa.sa_mask);
1250	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1537	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1251	sigaction (w->signum, &sa, 0);	1538	sigaction (w->signum, &sa, 0);
		1539	#endif
1252	}	1540	}
1253	}	1541	}
1254		1542
1255	void	1543	void
1256	ev_signal_stop (EV_P_ struct ev_signal *w)	1544	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1281		1569
1282	void	1570	void
1283	ev_child_stop (EV_P_ struct ev_child *w)	1571	ev_child_stop (EV_P_ struct ev_child *w)
1284	{	1572	{
1285	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1286	if (ev_is_active (w))	1574	if (!ev_is_active (w))
1287	return;	1575	return;
1288		1576
1289	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1577	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1290	ev_stop (EV_A_ (W)w);	1578	ev_stop (EV_A_ (W)w);
1291	}	1579	}
…		…
1306	void (cb)(int revents, void arg) = once->cb;	1594	void (cb)(int revents, void arg) = once->cb;
1307	void *arg = once->arg;	1595	void *arg = once->arg;
1308		1596
1309	ev_io_stop (EV_A_ &once->io);	1597	ev_io_stop (EV_A_ &once->io);
1310	ev_timer_stop (EV_A_ &once->to);	1598	ev_timer_stop (EV_A_ &once->to);
1311	free (once);	1599	ev_free (once);
1312		1600
1313	cb (revents, arg);	1601	cb (revents, arg);
1314	}	1602	}
1315		1603
1316	static void	1604	static void
…		…
1326	}	1614	}
1327		1615
1328	void	1616	void
1329	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1617	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1330	{	1618	{
1331	struct ev_once *once = malloc (sizeof (struct ev_once));	1619	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1332		1620
1333	if (!once)	1621	if (!once)
1334	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1622	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1335	else	1623	else
1336	{	1624	{
1337	once->cb = cb;	1625	once->cb = cb;
1338	once->arg = arg;	1626	once->arg = arg;
1339		1627
1340	ev_watcher_init (&once->io, once_cb_io);	1628	ev_init (&once->io, once_cb_io);
1341	if (fd >= 0)	1629	if (fd >= 0)
1342	{	1630	{
1343	ev_io_set (&once->io, fd, events);	1631	ev_io_set (&once->io, fd, events);
1344	ev_io_start (EV_A_ &once->io);	1632	ev_io_start (EV_A_ &once->io);
1345	}	1633	}
1346		1634
1347	ev_watcher_init (&once->to, once_cb_to);	1635	ev_init (&once->to, once_cb_to);
1348	if (timeout >= 0.)	1636	if (timeout >= 0.)
1349	{	1637	{
1350	ev_timer_set (&once->to, timeout, 0.);	1638	ev_timer_set (&once->to, timeout, 0.);
1351	ev_timer_start (EV_A_ &once->to);	1639	ev_timer_start (EV_A_ &once->to);
1352	}	1640	}
1353	}	1641	}
1354	}	1642	}
1355		1643
		1644	#ifdef __cplusplus
		1645	}
		1646	#endif
		1647

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Comparing libev/ev.c (file contents): Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs. Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC