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

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.122 by root, Sat Nov 17 02:00:48 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	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		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
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
33	#endif	68	#endif
34		69
35	#include <math.h>	70	#include <math.h>
36	#include <stdlib.h>	71	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	72	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	73	#include <stddef.h>
41		74
42	#include <stdio.h>	75	#include <stdio.h>
43		76
44	#include <assert.h>	77	#include <assert.h>
45	#include <errno.h>	78	#include <errno.h>
46	#include <sys/types.h>	79	#include <sys/types.h>
		80	#include <time.h>
		81
		82	#include <signal.h>
		83
47	#ifndef WIN32	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
48	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	93	# endif
50	#include <sys/time.h>	94	#endif
51	#include <time.h>
52		95
53	/**/	96	/**/
54		97
55	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
57	#endif	104	#endif
58		105
59	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
61	#endif	108	#endif
62		109
63	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
65	#endif	116	#endif
66		117
67	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
69	#endif	120	#endif
70		121
71	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
73	#endif	124	#endif
74		125
75	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
77	#endif	128	#endif
78		129
79	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
80		137
81	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
84	#endif	141	#endif
…		…
86	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
89	#endif	146	#endif
90		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
91	/**/	152	/**/
92		153
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#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) */	155	#define MAX_BLOCKTIME 59.743 /* 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 */	156	#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 */	157	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
98	#include "ev.h"	162	# include "ev.h"
		163	#endif
99		164
100	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	167	# define inline inline
103	#else	168	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
110		175
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
114	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
117		185
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		187
		188	#ifdef _WIN32
		189	# include "ev_win32.c"
		190	#endif
		191
		192	/*****************************************************************************/
		193
		194	static void (syserr_cb)(const char msg);
		195
		196	void ev_set_syserr_cb (void (cb)(const char msg))
		197	{
		198	syserr_cb = cb;
		199	}
		200
		201	static void
		202	syserr (const char *msg)
		203	{
		204	if (!msg)
		205	msg = "(libev) system error";
		206
		207	if (syserr_cb)
		208	syserr_cb (msg);
		209	else
		210	{
		211	perror (msg);
		212	abort ();
		213	}
		214	}
		215
		216	static void (alloc)(void *ptr, long size);
		217
		218	void ev_set_allocator (void (cb)(void *ptr, long size))
		219	{
		220	alloc = cb;
		221	}
		222
		223	static void *
		224	ev_realloc (void *ptr, long size)
		225	{
		226	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		227
		228	if (!ptr && size)
		229	{
		230	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		231	abort ();
		232	}
		233
		234	return ptr;
		235	}
		236
		237	#define ev_malloc(size) ev_realloc (0, (size))
		238	#define ev_free(ptr) ev_realloc ((ptr), 0)
		239
		240	/*****************************************************************************/
		241
		242	typedef struct
		243	{
		244	WL head;
		245	unsigned char events;
		246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
		250	} ANFD;
		251
		252	typedef struct
		253	{
		254	W w;
		255	int events;
		256	} ANPENDING;
		257
		258	#if EV_MULTIPLICITY
		259
		260	struct ev_loop
		261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
		264	#define VAR(name,decl) decl;
		265	#include "ev_vars.h"
		266	#undef VAR
		267	};
		268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
		272
		273	#else
		274
119	ev_tstamp ev_now;	275	ev_tstamp ev_rt_now;
120	int ev_method;	276	#define VAR(name,decl) static decl;
		277	#include "ev_vars.h"
		278	#undef VAR
121		279
122	static int have_monotonic; /* runtime */	280	static int ev_default_loop_ptr;
123		281
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	282	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		283
128	/*****************************************************************************/	284	/*****************************************************************************/
129		285
130	ev_tstamp	286	ev_tstamp
131	ev_time (void)	287	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	295	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	296	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	297	#endif
142	}	298	}
143		299
144	static ev_tstamp	300	inline ev_tstamp
145	get_clock (void)	301	get_clock (void)
146	{	302	{
147	#if EV_USE_MONOTONIC	303	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	304	if (expect_true (have_monotonic))
149	{	305	{
…		…
154	#endif	310	#endif
155		311
156	return ev_time ();	312	return ev_time ();
157	}	313	}
158		314
		315	#if EV_MULTIPLICITY
		316	ev_tstamp
		317	ev_now (EV_P)
		318	{
		319	return ev_rt_now;
		320	}
		321	#endif
		322
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		324
161	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
163	{ \	327	{ \
164	int newcnt = cur; \	328	int newcnt = cur; \
165	do \	329	do \
166	{ \	330	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	332	} \
169	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
170	\	334	\
171	base = realloc (base, sizeof (base) (newcnt)); \	335	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	337	cur = newcnt; \
174	}	338	}
		339
		340	#define array_slim(type,stem) \
		341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		342	{ \
		343	stem ## max = array_roundsize (stem ## cnt >> 1); \
		344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		346	}
		347
		348	#define array_free(stem, idx) \
		349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		350
176	/*****************************************************************************/	351	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		352
188	static void	353	static void
189	anfds_init (ANFD *base, int count)	354	anfds_init (ANFD *base, int count)
190	{	355	{
191	while (count--)	356	while (count--)
…		…
196		361
197	++base;	362	++base;
198	}	363	}
199	}	364	}
200		365
201	typedef struct	366	void
		367	ev_feed_event (EV_P_ void *w, int revents)
202	{	368	{
203	W w;	369	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		370
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)	371	if (w_->pending)
214	{	372	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	374	return;
217	}	375	}
218		376
219	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	381	}
224		382
225	static void	383	static void
226	queue_events (W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	385	{
228	int i;	386	int i;
229		387
230	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
232	}	390	}
233		391
234	static void	392	inline void
235	fd_event (int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
236	{	394	{
237	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	396	struct ev_io *w;
239		397
240	for (w = anfd->head; w; w = w->next)	398	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	399	{
242	int ev = w->events & events;	400	int ev = w->events & revents;
243		401
244	if (ev)	402	if (ev)
245	event ((W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
246	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
247	}	411	}
248		412
249	/*****************************************************************************/	413	/*****************************************************************************/
250		414
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	415	static void
255	fd_reify (void)	416	fd_reify (EV_P)
256	{	417	{
257	int i;	418	int i;
258		419
259	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
260	{	421	{
…		…
262	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	424	struct ev_io *w;
264		425
265	int events = 0;	426	int events = 0;
266		427
267	for (w = anfd->head; w; w = w->next)	428	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	429	events \|= w->events;
269		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
270	anfd->reify = 0;	440	anfd->reify = 0;
271		441
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	443	anfd->events = events;
276	}
277	}	444	}
278		445
279	fdchangecnt = 0;	446	fdchangecnt = 0;
280	}	447	}
281		448
282	static void	449	static void
283	fd_change (int fd)	450	fd_change (EV_P_ int fd)
284	{	451	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	452	if (anfds [fd].reify)
286	return;	453	return;
287		454
288	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
289		456
290	++fdchangecnt;	457	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
293	}	460	}
294		461
295	static void	462	static void
296	fd_kill (int fd)	463	fd_kill (EV_P_ int fd)
297	{	464	{
298	struct ev_io *w;	465	struct ev_io *w;
299		466
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
302	{	468	{
303	ev_io_stop (w);	469	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	470	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	471	}
		472	}
		473
		474	static int
		475	fd_valid (int fd)
		476	{
		477	#ifdef _WIN32
		478	return _get_osfhandle (fd) != -1;
		479	#else
		480	return fcntl (fd, F_GETFD) != -1;
		481	#endif
306	}	482	}
307		483
308	/* called on EBADF to verify fds */	484	/* called on EBADF to verify fds */
309	static void	485	static void
310	fd_ebadf (void)	486	fd_ebadf (EV_P)
311	{	487	{
312	int fd;	488	int fd;
313		489
314	for (fd = 0; fd < anfdmax; ++fd)	490	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	491	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	492	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	493	fd_kill (EV_A_ fd);
318	}	494	}
319		495
320	/* called on ENOMEM in select/poll to kill some fds and retry */	496	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	497	static void
322	fd_enomem (void)	498	fd_enomem (EV_P)
323	{	499	{
324	int fd = anfdmax;	500	int fd;
325		501
326	while (fd--)	502	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	503	if (anfds [fd].events)
328	{	504	{
329	close (fd);
330	fd_kill (fd);	505	fd_kill (EV_A_ fd);
331	return;	506	return;
332	}	507	}
333	}	508	}
334		509
		510	/* usually called after fork if method needs to re-arm all fds from scratch */
		511	static void
		512	fd_rearm_all (EV_P)
		513	{
		514	int fd;
		515
		516	/* this should be highly optimised to not do anything but set a flag */
		517	for (fd = 0; fd < anfdmax; ++fd)
		518	if (anfds [fd].events)
		519	{
		520	anfds [fd].events = 0;
		521	fd_change (EV_A_ fd);
		522	}
		523	}
		524
335	/*****************************************************************************/	525	/*****************************************************************************/
336		526
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	527	static void
344	upheap (WT *timers, int k)	528	upheap (WT *heap, int k)
345	{	529	{
346	WT w = timers [k];	530	WT w = heap [k];
347		531
348	while (k && timers [k >> 1]->at > w->at)	532	while (k && heap [k >> 1]->at > w->at)
349	{	533	{
350	timers [k] = timers [k >> 1];	534	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
352	k >>= 1;	536	k >>= 1;
353	}	537	}
354		538
355	timers [k] = w;	539	heap [k] = w;
356	timers [k]->active = k + 1;	540	((W)heap [k])->active = k + 1;
357		541
358	}	542	}
359		543
360	static void	544	static void
361	downheap (WT *timers, int N, int k)	545	downheap (WT *heap, int N, int k)
362	{	546	{
363	WT w = timers [k];	547	WT w = heap [k];
364		548
365	while (k < (N >> 1))	549	while (k < (N >> 1))
366	{	550	{
367	int j = k << 1;	551	int j = k << 1;
368		552
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	553	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	554	++j;
371		555
372	if (w->at <= timers [j]->at)	556	if (w->at <= heap [j]->at)
373	break;	557	break;
374		558
375	timers [k] = timers [j];	559	heap [k] = heap [j];
376	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
377	k = j;	561	k = j;
378	}	562	}
379		563
380	timers [k] = w;	564	heap [k] = w;
381	timers [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
		566	}
		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
382	}	573	}
383		574
384	/*****************************************************************************/	575	/*****************************************************************************/
385		576
386	typedef struct	577	typedef struct
387	{	578	{
388	struct ev_signal *head;	579	WL head;
389	sig_atomic_t volatile gotsig;	580	sig_atomic_t volatile gotsig;
390	} ANSIG;	581	} ANSIG;
391		582
392	static ANSIG *signals;	583	static ANSIG *signals;
393	static int signalmax;	584	static int signalmax;
…		…
409	}	600	}
410		601
411	static void	602	static void
412	sighandler (int signum)	603	sighandler (int signum)
413	{	604	{
		605	#if _WIN32
		606	signal (signum, sighandler);
		607	#endif
		608
414	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
415		610
416	if (!gotsig)	611	if (!gotsig)
417	{	612	{
		613	int old_errno = errno;
418	gotsig = 1;	614	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
		616	errno = old_errno;
420	}	617	}
421	}	618	}
422		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 \|\| signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
423	static void	640	static void
424	sigcb (struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	642	{
426	struct ev_signal *w;
427	int signum;	643	int signum;
428		644
429	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	646	gotsig = 0;
431		647
432	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
434	{	650	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	651	}
441		652
442	static void	653	inline void
443	siginit (void)	654	fd_intern (int fd)
444	{	655	{
445	#ifndef WIN32	656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	660	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	661	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	662	#endif
		663	}
		664
		665	static void
		666	siginit (EV_P)
		667	{
		668	fd_intern (sigpipe [0]);
		669	fd_intern (sigpipe [1]);
453		670
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	672	ev_io_start (EV_A_ &sigev);
		673	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	674	}
457		675
458	/*****************************************************************************/	676	/*****************************************************************************/
459		677
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
		679
		680	#ifndef _WIN32
		681
472	static struct ev_signal childev;	682	static struct ev_signal childev;
473
474	#ifndef WIN32
475		683
476	#ifndef WCONTINUED	684	#ifndef WCONTINUED
477	# define WCONTINUED 0	685	# define WCONTINUED 0
478	#endif	686	#endif
479		687
480	static void	688	static void
481	childcb (struct ev_signal *sw, int revents)	689	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	690	{
483	struct ev_child *w;	691	struct ev_child *w;
		692
		693	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		694	if (w->pid == pid \|\| !w->pid)
		695	{
		696	ev_priority (w) = ev_priority (sw); /* need to do it now */
		697	w->rpid = pid;
		698	w->rstatus = status;
		699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		700	}
		701	}
		702
		703	static void
		704	childcb (EV_P_ struct ev_signal *sw, int revents)
		705	{
484	int pid, status;	706	int pid, status;
485		707
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	709	{
488	if (w->pid == pid \|\| !w->pid)	710	/* make sure we are called again until all childs have been reaped */
489	{	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	712
491	event ((W)w, EV_CHILD);	713	child_reap (EV_A_ sw, pid, pid, status);
492	}	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		715	}
493	}	716	}
494		717
495	#endif	718	#endif
496		719
497	/*****************************************************************************/	720	/*****************************************************************************/
498		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
499	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
500	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
501	#endif	727	#endif
502	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
503	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
519	ev_version_minor (void)	745	ev_version_minor (void)
520	{	746	{
521	return EV_VERSION_MINOR;	747	return EV_VERSION_MINOR;
522	}	748	}
523		749
524	/* return true if we are running with elevated privileges and ignore env variables */	750	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	751	static int
526	enable_secure ()	752	enable_secure (void)
527	{	753	{
		754	#ifdef _WIN32
		755	return 0;
		756	#else
528	return getuid () != geteuid ()	757	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	758	\|\| getgid () != getegid ();
		759	#endif
530	}	760	}
531		761
532	int ev_init (int methods)	762	unsigned int
		763	ev_method (EV_P)
533	{	764	{
		765	return method;
		766	}
		767
		768	static void
		769	loop_init (EV_P_ unsigned int flags)
		770	{
534	if (!ev_method)	771	if (!method)
535	{	772	{
536	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
537	{	774	{
538	struct timespec ts;	775	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	777	have_monotonic = 1;
541	}	778	}
542	#endif	779	#endif
543		780
544	ev_now = ev_time ();	781	ev_rt_now = ev_time ();
545	now = get_clock ();	782	mn_now = get_clock ();
546	now_floor = now;	783	now_floor = mn_now;
547	diff = ev_now - now;	784	rtmn_diff = ev_rt_now - mn_now;
548		785
549	if (pipe (sigpipe))	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
550	return 0;
551
552	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
555	else
556	methods = EVMETHOD_ANY;
557		788
		789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
		791
558	ev_method = 0;	792	method = 0;
		793	#if EV_USE_PORT
		794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		795	#endif
559	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
561	#endif	798	#endif
562	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
564	#endif	801	#endif
565	#if EV_USE_POLL	802	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
567	#endif	804	#endif
568	#if EV_USE_SELECT	805	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
570	#endif	807	#endif
571		808
		809	ev_init (&sigev, sigcb);
		810	ev_set_priority (&sigev, EV_MAXPRI);
		811	}
		812	}
		813
		814	void
		815	loop_destroy (EV_P)
		816	{
		817	int i;
		818
		819	#if EV_USE_PORT
		820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		821	#endif
		822	#if EV_USE_KQUEUE
		823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		824	#endif
		825	#if EV_USE_EPOLL
		826	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		827	#endif
		828	#if EV_USE_POLL
		829	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		830	#endif
		831	#if EV_USE_SELECT
		832	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		833	#endif
		834
		835	for (i = NUMPRI; i--; )
		836	array_free (pending, [i]);
		837
		838	/* have to use the microsoft-never-gets-it-right macro */
		839	array_free (fdchange, EMPTY0);
		840	array_free (timer, EMPTY0);
		841	#if EV_PERIODICS
		842	array_free (periodic, EMPTY0);
		843	#endif
		844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
		847
		848	method = 0;
		849	}
		850
		851	static void
		852	loop_fork (EV_P)
		853	{
		854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
		860	#if EV_USE_EPOLL
		861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		862	#endif
		863
		864	if (ev_is_active (&sigev))
		865	{
		866	/* default loop */
		867
		868	ev_ref (EV_A);
		869	ev_io_stop (EV_A_ &sigev);
		870	close (sigpipe [0]);
		871	close (sigpipe [1]);
		872
		873	while (pipe (sigpipe))
		874	syserr ("(libev) error creating pipe");
		875
		876	siginit (EV_A);
		877	}
		878
		879	postfork = 0;
		880	}
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	ev_loop_new (unsigned int flags)
		885	{
		886	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		887
		888	memset (loop, 0, sizeof (struct ev_loop));
		889
		890	loop_init (EV_A_ flags);
		891
		892	if (ev_method (EV_A))
		893	return loop;
		894
		895	return 0;
		896	}
		897
		898	void
		899	ev_loop_destroy (EV_P)
		900	{
		901	loop_destroy (EV_A);
		902	ev_free (loop);
		903	}
		904
		905	void
		906	ev_loop_fork (EV_P)
		907	{
		908	postfork = 1;
		909	}
		910
		911	#endif
		912
		913	#if EV_MULTIPLICITY
		914	struct ev_loop *
		915	ev_default_loop_ (unsigned int flags)
		916	#else
		917	int
		918	ev_default_loop (unsigned int flags)
		919	#endif
		920	{
		921	if (sigpipe [0] == sigpipe [1])
		922	if (pipe (sigpipe))
		923	return 0;
		924
		925	if (!ev_default_loop_ptr)
		926	{
		927	#if EV_MULTIPLICITY
		928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		929	#else
		930	ev_default_loop_ptr = 1;
		931	#endif
		932
		933	loop_init (EV_A_ flags);
		934
572	if (ev_method)	935	if (ev_method (EV_A))
573	{	936	{
574	ev_watcher_init (&sigev, sigcb);
575	siginit ();	937	siginit (EV_A);
576		938
577	#ifndef WIN32	939	#ifndef _WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
		941	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	942	ev_signal_start (EV_A_ &childev);
		943	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	944	#endif
581	}	945	}
		946	else
		947	ev_default_loop_ptr = 0;
582	}	948	}
583		949
584	return ev_method;	950	return ev_default_loop_ptr;
		951	}
		952
		953	void
		954	ev_default_destroy (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = ev_default_loop_ptr;
		958	#endif
		959
		960	#ifndef _WIN32
		961	ev_ref (EV_A); /* child watcher */
		962	ev_signal_stop (EV_A_ &childev);
		963	#endif
		964
		965	ev_ref (EV_A); /* signal watcher */
		966	ev_io_stop (EV_A_ &sigev);
		967
		968	close (sigpipe [0]); sigpipe [0] = 0;
		969	close (sigpipe [1]); sigpipe [1] = 0;
		970
		971	loop_destroy (EV_A);
		972	}
		973
		974	void
		975	ev_default_fork (void)
		976	{
		977	#if EV_MULTIPLICITY
		978	struct ev_loop *loop = ev_default_loop_ptr;
		979	#endif
		980
		981	if (method)
		982	postfork = 1;
585	}	983	}
586		984
587	/*****************************************************************************/	985	/*****************************************************************************/
588		986
589	void
590	ev_fork_prepare (void)
591	{
592	/* nop */
593	}
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif
608
609	ev_io_stop (&sigev);
610	close (sigpipe [0]);
611	close (sigpipe [1]);
612	pipe (sigpipe);
613	siginit ();
614	}
615
616	/*****************************************************************************/
617
618	static void	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
619	call_pending (void)	1000	call_pending (EV_P)
620	{	1001	{
621	int pri;	1002	int pri;
622		1003
623	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
625	{	1006	{
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		1008
628	if (p->w)	1009	if (expect_true (p->w))
629	{	1010	{
630	p->w->pending = 0;	1011	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
632	}	1013	}
633	}	1014	}
634	}	1015	}
635		1016
636	static void	1017	static void
637	timers_reify (void)	1018	timers_reify (EV_P)
638	{	1019	{
639	while (timercnt && timers [0]->at <= now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	1021	{
641	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
		1023
		1024	assert (("inactive timer on timer heap detected", ev_is_active (w)));
642		1025
643	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
644	if (w->repeat)	1027	if (w->repeat)
645	{	1028	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
647	w->at = now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
648	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
649	}	1036	}
650	else	1037	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		1039
653	event ((W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
654	}	1041	}
655	}	1042	}
656		1043
		1044	#if EV_PERIODICS
657	static void	1045	static void
658	periodics_reify (void)	1046	periodics_reify (EV_P)
659	{	1047	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
661	{	1049	{
662	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
663		1051
		1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1053
664	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
665	if (w->interval)	1055	if (w->reschedule_cb)
666	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
668	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
670	}	1066	}
671	else	1067	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		1069
674	event ((W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
675	}	1071	}
676	}	1072	}
677		1073
678	static void	1074	static void
679	periodics_reschedule (ev_tstamp diff)	1075	periodics_reschedule (EV_P)
680	{	1076	{
681	int i;	1077	int i;
682		1078
683	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
685	{	1081	{
686	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
687		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
688	if (w->interval)	1086	else if (w->interval)
689	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
691
692	if (fabs (diff) >= 1e-4)
693	{
694	ev_periodic_stop (w);
695	ev_periodic_start (w);
696
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}
699	}
700	}	1088	}
701	}
702		1089
703	static int	1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
		1093	}
		1094	#endif
		1095
		1096	inline int
704	time_update_monotonic (void)	1097	time_update_monotonic (EV_P)
705	{	1098	{
706	now = get_clock ();	1099	mn_now = get_clock ();
707		1100
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	1102	{
710	ev_now = now + diff;	1103	ev_rt_now = rtmn_diff + mn_now;
711	return 0;	1104	return 0;
712	}	1105	}
713	else	1106	else
714	{	1107	{
715	now_floor = now;	1108	now_floor = mn_now;
716	ev_now = ev_time ();	1109	ev_rt_now = ev_time ();
717	return 1;	1110	return 1;
718	}	1111	}
719	}	1112	}
720		1113
721	static void	1114	static void
722	time_update (void)	1115	time_update (EV_P)
723	{	1116	{
724	int i;	1117	int i;
725		1118
726	#if EV_USE_MONOTONIC	1119	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	1120	if (expect_true (have_monotonic))
728	{	1121	{
729	if (time_update_monotonic ())	1122	if (time_update_monotonic (EV_A))
730	{	1123	{
731	ev_tstamp odiff = diff;	1124	ev_tstamp odiff = rtmn_diff;
732		1125
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	1127	{
735	diff = ev_now - now;	1128	rtmn_diff = ev_rt_now - mn_now;
736		1129
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	1131	return; /* all is well */
739		1132
740	ev_now = ev_time ();	1133	ev_rt_now = ev_time ();
741	now = get_clock ();	1134	mn_now = get_clock ();
742	now_floor = now;	1135	now_floor = mn_now;
743	}	1136	}
744		1137
		1138	# if EV_PERIODICS
745	periodics_reschedule (diff - odiff);	1139	periodics_reschedule (EV_A);
		1140	# endif
746	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
		1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	1143	}
748	}	1144	}
749	else	1145	else
750	#endif	1146	#endif
751	{	1147	{
752	ev_now = ev_time ();	1148	ev_rt_now = ev_time ();
753		1149
754	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1150	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	1151	{
		1152	#if EV_PERIODICS
756	periodics_reschedule (ev_now - now);	1153	periodics_reschedule (EV_A);
		1154	#endif
757		1155
758	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
761	}	1159	}
762		1160
763	now = ev_now;	1161	mn_now = ev_rt_now;
764	}	1162	}
765	}	1163	}
766		1164
767	int ev_loop_done;	1165	void
		1166	ev_ref (EV_P)
		1167	{
		1168	++activecnt;
		1169	}
768		1170
		1171	void
		1172	ev_unref (EV_P)
		1173	{
		1174	--activecnt;
		1175	}
		1176
		1177	static int loop_done;
		1178
		1179	void
769	void ev_loop (int flags)	1180	ev_loop (EV_P_ int flags)
770	{	1181	{
771	double block;	1182	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		1184
774	do	1185	while (activecnt)
775	{	1186	{
776	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
778	{	1189	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	1191	call_pending (EV_A);
781	}	1192	}
782		1193
		1194	/* we might have forked, so reify kernel state if necessary */
		1195	if (expect_false (postfork))
		1196	loop_fork (EV_A);
		1197
783	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
784	fd_reify ();	1199	fd_reify (EV_A);
785		1200
786	/* calculate blocking time */	1201	/* calculate blocking time */
787		1202
788	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
789	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
792	time_update_monotonic ();	1207	time_update_monotonic (EV_A);
793	else	1208	else
794	#endif	1209	#endif
795	{	1210	{
796	ev_now = ev_time ();	1211	ev_rt_now = ev_time ();
797	now = ev_now;	1212	mn_now = ev_rt_now;
798	}	1213	}
799		1214
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	1216	block = 0.;
802	else	1217	else
803	{	1218	{
804	block = MAX_BLOCKTIME;	1219	block = MAX_BLOCKTIME;
805		1220
806	if (timercnt)	1221	if (timercnt)
807	{	1222	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	1224	if (block > to) block = to;
810	}	1225	}
811		1226
		1227	#if EV_PERIODICS
812	if (periodiccnt)	1228	if (periodiccnt)
813	{	1229	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
815	if (block > to) block = to;	1231	if (block > to) block = to;
816	}	1232	}
		1233	#endif
817		1234
818	if (block < 0.) block = 0.;	1235	if (block < 0.) block = 0.;
819	}	1236	}
820		1237
821	method_poll (block);	1238	method_poll (EV_A_ block);
822		1239
823	/* update ev_now, do magic */	1240	/* update ev_rt_now, do magic */
824	time_update ();	1241	time_update (EV_A);
825		1242
826	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
828	periodics_reify (); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
829		1248
830	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1252
834	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
835	if (checkcnt)	1254	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1256
838	call_pending ();	1257	call_pending (EV_A);
839	}
840	while (!ev_loop_done);
841		1258
		1259	if (loop_done)
		1260	break;
		1261	}
		1262
842	if (ev_loop_done != 2)	1263	if (loop_done != 2)
843	ev_loop_done = 0;	1264	loop_done = 0;
		1265	}
		1266
		1267	void
		1268	ev_unloop (EV_P_ int how)
		1269	{
		1270	loop_done = how;
844	}	1271	}
845		1272
846	/*****************************************************************************/	1273	/*****************************************************************************/
847		1274
848	static void	1275	inline void
849	wlist_add (WL *head, WL elem)	1276	wlist_add (WL *head, WL elem)
850	{	1277	{
851	elem->next = *head;	1278	elem->next = *head;
852	*head = elem;	1279	*head = elem;
853	}	1280	}
854		1281
855	static void	1282	inline void
856	wlist_del (WL *head, WL elem)	1283	wlist_del (WL *head, WL elem)
857	{	1284	{
858	while (*head)	1285	while (*head)
859	{	1286	{
860	if (*head == elem)	1287	if (*head == elem)
…		…
865		1292
866	head = &(*head)->next;	1293	head = &(*head)->next;
867	}	1294	}
868	}	1295	}
869		1296
870	static void	1297	inline void
871	ev_clear_pending (W w)	1298	ev_clear_pending (EV_P_ W w)
872	{	1299	{
873	if (w->pending)	1300	if (w->pending)
874	{	1301	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1302	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1303	w->pending = 0;
877	}	1304	}
878	}	1305	}
879		1306
880	static void	1307	inline void
881	ev_start (W w, int active)	1308	ev_start (EV_P_ W w, int active)
882	{	1309	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1310	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1311	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1312
886	w->active = active;	1313	w->active = active;
		1314	ev_ref (EV_A);
887	}	1315	}
888		1316
889	static void	1317	inline void
890	ev_stop (W w)	1318	ev_stop (EV_P_ W w)
891	{	1319	{
		1320	ev_unref (EV_A);
892	w->active = 0;	1321	w->active = 0;
893	}	1322	}
894		1323
895	/*****************************************************************************/	1324	/*****************************************************************************/
896		1325
897	void	1326	void
898	ev_io_start (struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
899	{	1328	{
900	int fd = w->fd;	1329	int fd = w->fd;
901		1330
902	if (ev_is_active (w))	1331	if (ev_is_active (w))
903	return;	1332	return;
904		1333
905	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
906		1335
907	ev_start ((W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1339
911	fd_change (fd);	1340	fd_change (EV_A_ fd);
912	}	1341	}
913		1342
914	void	1343	void
915	ev_io_stop (struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1345	{
917	ev_clear_pending ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
919	return;	1348	return;
920		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1351
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
923		1354
924	fd_change (w->fd);	1355	fd_change (EV_A_ w->fd);
925	}	1356	}
926		1357
927	void	1358	void
928	ev_timer_start (struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1360	{
930	if (ev_is_active (w))	1361	if (ev_is_active (w))
931	return;	1362	return;
932		1363
933	w->at += now;	1364	((WT)w)->at += mn_now;
934		1365
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1367
937	ev_start ((W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
939	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
941	}
942		1372
		1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1374	}
		1375
943	void	1376	void
944	ev_timer_stop (struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1378	{
946	ev_clear_pending ((W)w);	1379	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1380	if (!ev_is_active (w))
948	return;	1381	return;
949		1382
		1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1384
950	if (w->active < timercnt--)	1385	if (((W)w)->active < timercnt--)
951	{	1386	{
952	timers [w->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1389	}
955		1390
956	w->at = w->repeat;	1391	((WT)w)->at -= mn_now;
957		1392
958	ev_stop ((W)w);	1393	ev_stop (EV_A_ (W)w);
959	}	1394	}
960		1395
961	void	1396	void
962	ev_timer_again (struct ev_timer *w)	1397	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1398	{
964	if (ev_is_active (w))	1399	if (ev_is_active (w))
965	{	1400	{
966	if (w->repeat)	1401	if (w->repeat)
967	{	1402	{
968	w->at = now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1405	}
971	else	1406	else
972	ev_timer_stop (w);	1407	ev_timer_stop (EV_A_ w);
973	}	1408	}
974	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
975	ev_timer_start (w);	1412	ev_timer_start (EV_A_ w);
		1413	}
976	}	1414	}
977		1415
		1416	#if EV_PERIODICS
978	void	1417	void
979	ev_periodic_start (struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1419	{
981	if (ev_is_active (w))	1420	if (ev_is_active (w))
982	return;	1421	return;
983		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1428	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
989		1431
990	ev_start ((W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
992	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1436
		1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1438	}
		1439
996	void	1440	void
997	ev_periodic_stop (struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1442	{
999	ev_clear_pending ((W)w);	1443	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1444	if (!ev_is_active (w))
1001	return;	1445	return;
1002		1446
		1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1448
1003	if (w->active < periodiccnt--)	1449	if (((W)w)->active < periodiccnt--)
1004	{	1450	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1453	}
1008		1454
1009	ev_stop ((W)w);	1455	ev_stop (EV_A_ (W)w);
1010	}	1456	}
1011		1457
1012	void	1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
1013	ev_signal_start (struct ev_signal *w)	1468	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1469	{
1015	if (ev_is_active (w))	1470	if (ev_is_active (w))
1016	return;	1471	return;
1017		1472
		1473	ev_start (EV_A_ (W)w, ++idlecnt);
		1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1475	idles [idlecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_idle_stop (EV_P_ struct ev_idle *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (!ev_is_active (w))
		1483	return;
		1484
		1485	idles [((W)w)->active - 1] = idles [--idlecnt];
		1486	ev_stop (EV_A_ (W)w);
		1487	}
		1488
		1489	void
		1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1491	{
		1492	if (ev_is_active (w))
		1493	return;
		1494
		1495	ev_start (EV_A_ (W)w, ++preparecnt);
		1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1497	prepares [preparecnt - 1] = w;
		1498	}
		1499
		1500	void
		1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1502	{
		1503	ev_clear_pending (EV_A_ (W)w);
		1504	if (!ev_is_active (w))
		1505	return;
		1506
		1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1508	ev_stop (EV_A_ (W)w);
		1509	}
		1510
		1511	void
		1512	ev_check_start (EV_P_ struct ev_check *w)
		1513	{
		1514	if (ev_is_active (w))
		1515	return;
		1516
		1517	ev_start (EV_A_ (W)w, ++checkcnt);
		1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1519	checks [checkcnt - 1] = w;
		1520	}
		1521
		1522	void
		1523	ev_check_stop (EV_P_ struct ev_check *w)
		1524	{
		1525	ev_clear_pending (EV_A_ (W)w);
		1526	if (!ev_is_active (w))
		1527	return;
		1528
		1529	checks [((W)w)->active - 1] = checks [--checkcnt];
		1530	ev_stop (EV_A_ (W)w);
		1531	}
		1532
		1533	#ifndef SA_RESTART
		1534	# define SA_RESTART 0
		1535	#endif
		1536
		1537	void
		1538	ev_signal_start (EV_P_ struct ev_signal *w)
		1539	{
		1540	#if EV_MULTIPLICITY
		1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1542	#endif
		1543	if (ev_is_active (w))
		1544	return;
		1545
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1547
1020	ev_start ((W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1551
1024	if (!w->next)	1552	if (!((WL)w)->next)
1025	{	1553	{
		1554	#if _WIN32
		1555	signal (w->signum, sighandler);
		1556	#else
1026	struct sigaction sa;	1557	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1560	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1561	sigaction (w->signum, &sa, 0);
		1562	#endif
1031	}	1563	}
1032	}	1564	}
1033		1565
1034	void	1566	void
1035	ev_signal_stop (struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1568	{
1037	ev_clear_pending ((W)w);	1569	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1570	if (!ev_is_active (w))
1039	return;	1571	return;
1040		1572
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1574	ev_stop (EV_A_ (W)w);
1043		1575
1044	if (!signals [w->signum - 1].head)	1576	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1577	signal (w->signum, SIG_DFL);
1046	}	1578	}
1047		1579
1048	void	1580	void
1049	ev_idle_start (struct ev_idle *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1582	{
		1583	#if EV_MULTIPLICITY
		1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1585	#endif
1051	if (ev_is_active (w))	1586	if (ev_is_active (w))
1052	return;	1587	return;
1053		1588
1054	ev_start ((W)w, ++idlecnt);
1055	array_needsize (idles, idlemax, idlecnt, );
1056	idles [idlecnt - 1] = w;
1057	}
1058
1059	void
1060	ev_idle_stop (struct ev_idle *w)
1061	{
1062	ev_clear_pending ((W)w);
1063	if (ev_is_active (w))
1064	return;
1065
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}	1591	}
1123		1592
1124	void	1593	void
1125	ev_child_stop (struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1126	{	1595	{
1127	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1128	if (ev_is_active (w))	1597	if (!ev_is_active (w))
1129	return;	1598	return;
1130		1599
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
1133	}	1602	}
1134		1603
1135	/*****************************************************************************/	1604	/*****************************************************************************/
1136		1605
1137	struct ev_once	1606	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1610	void (cb)(int revents, void arg);
1142	void *arg;	1611	void *arg;
1143	};	1612	};
1144		1613
1145	static void	1614	static void
1146	once_cb (struct ev_once *once, int revents)	1615	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1616	{
1148	void (cb)(int revents, void arg) = once->cb;	1617	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1618	void *arg = once->arg;
1150		1619
1151	ev_io_stop (&once->io);	1620	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1621	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1622	ev_free (once);
1154		1623
1155	cb (revents, arg);	1624	cb (revents, arg);
1156	}	1625	}
1157		1626
1158	static void	1627	static void
1159	once_cb_io (struct ev_io *w, int revents)	1628	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1629	{
1161	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1630	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1162	}	1631	}
1163		1632
1164	static void	1633	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1634	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1635	{
1167	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1636	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1168	}	1637	}
1169		1638
1170	void	1639	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1172	{	1641	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1174		1643
1175	if (!once)	1644	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1645	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1177	else	1646	else
1178	{	1647	{
1179	once->cb = cb;	1648	once->cb = cb;
1180	once->arg = arg;	1649	once->arg = arg;
1181		1650
1182	ev_watcher_init (&once->io, once_cb_io);	1651	ev_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1652	if (fd >= 0)
1184	{	1653	{
1185	ev_io_set (&once->io, fd, events);	1654	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1655	ev_io_start (EV_A_ &once->io);
1187	}	1656	}
1188		1657
1189	ev_watcher_init (&once->to, once_cb_to);	1658	ev_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1659	if (timeout >= 0.)
1191	{	1660	{
1192	ev_timer_set (&once->to, timeout, 0.);	1661	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1662	ev_timer_start (EV_A_ &once->to);
1194	}	1663	}
1195	}	1664	}
1196	}	1665	}
1197		1666
1198	/*****************************************************************************/	1667	#ifdef __cplusplus
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}	1668	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif	1669	#endif
1254		1670
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.122 by root, Sat Nov 17 02:00:48 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.122 by root, Sat Nov 17 02:00:48 2007 UTC