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Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.128 by root, Thu Nov 22 12:28:27 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	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	107	#include <time.h>
50		108
		109	#include <signal.h>
		110
		111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
		114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
		120	# endif
		121	#endif
		122
51	/**/	123	/**/
52		124
53	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
55	#endif	131	#endif
56		132
57	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
59	#endif	135	#endif
60		136
61	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
63	#endif	143	#endif
64		144
65	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
67	#endif	147	#endif
68		148
69	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
71	#endif	151	#endif
72		152
73	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
74	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
75	#endif	155	#endif
76		156
77	/**/	157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
78		164
79	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
80	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
82	#endif	168	#endif
…		…
84	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
85	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
86	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
87	#endif	173	#endif
88		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
89	/**/	179	/**/
90		180
91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	182	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
94	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
95		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
96	#include "ev.h"	189	# include "ev.h"
		190	#endif
97		191
98	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	194	# define inline static inline
101	#else	195	#else
102	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
103	# define inline static	197	# define inline static
104	#endif	198	#endif
105		199
…		…
107	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
108		202
109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
111		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
112	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
115		212
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		214
		215	#ifdef _WIN32
		216	# include "ev_win32.c"
		217	#endif
		218
		219	/*****************************************************************************/
		220
		221	static void (*syserr_cb)(const char *msg);
		222
		223	void ev_set_syserr_cb (void (*cb)(const char *msg))
		224	{
		225	syserr_cb = cb;
		226	}
		227
		228	static void
		229	syserr (const char *msg)
		230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
		234	if (syserr_cb)
		235	syserr_cb (msg);
		236	else
		237	{
		238	perror (msg);
		239	abort ();
		240	}
		241	}
		242
		243	static void *(*alloc)(void *ptr, long size);
		244
		245	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		246	{
		247	alloc = cb;
		248	}
		249
		250	static void *
		251	ev_realloc (void *ptr, long size)
		252	{
		253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		254
		255	if (!ptr && size)
		256	{
		257	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		258	abort ();
		259	}
		260
		261	return ptr;
		262	}
		263
		264	#define ev_malloc(size) ev_realloc (0, (size))
		265	#define ev_free(ptr) ev_realloc ((ptr), 0)
		266
		267	/*****************************************************************************/
		268
		269	typedef struct
		270	{
		271	WL head;
		272	unsigned char events;
		273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
		277	} ANFD;
		278
		279	typedef struct
		280	{
		281	W w;
		282	int events;
		283	} ANPENDING;
		284
		285	#if EV_MULTIPLICITY
		286
		287	struct ev_loop
		288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
		291	#define VAR(name,decl) decl;
		292	#include "ev_vars.h"
		293	#undef VAR
		294	};
		295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
		299
		300	#else
		301
117	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
118	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
119		306
120	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
121		308
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		310
126	/*****************************************************************************/	311	/*****************************************************************************/
127		312
128	ev_tstamp	313	ev_tstamp
129	ev_time (void)	314	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	324	#endif
140	}	325	}
141		326
142	static ev_tstamp	327	inline ev_tstamp
143	get_clock (void)	328	get_clock (void)
144	{	329	{
145	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	331	if (expect_true (have_monotonic))
147	{	332	{
…		…
152	#endif	337	#endif
153		338
154	return ev_time ();	339	return ev_time ();
155	}	340	}
156		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
157	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
158		351
159	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
161	{ \	354	{ \
162	int newcnt = cur; \	355	int newcnt = cur; \
163	do \	356	do \
164	{ \	357	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	359	} \
167	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
168	\	361	\
169	base = realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
170	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	364	cur = newcnt; \
172	}	365	}
		366
		367	#define array_slim(type,stem) \
		368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		369	{ \
		370	stem ## max = array_roundsize (stem ## cnt >> 1); \
		371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		373	}
		374
		375	#define array_free(stem, idx) \
		376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
173		377
174	/*****************************************************************************/	378	/*****************************************************************************/
175
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185		379
186	static void	380	static void
187	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
188	{	382	{
189	while (count--)	383	while (count--)
…		…
194		388
195	++base;	389	++base;
196	}	390	}
197	}	391	}
198		392
199	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
200	{	395	{
201	W w;	396	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		397
205	static ANPENDING *pendings [NUMPRI];	398	if (expect_false (w_->pending))
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void
209	event (W w, int events)
210	{
211	if (w->pending)
212	{	399	{
213	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
214	return;	401	return;
215	}	402	}
216		403
217	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	408	}
222		409
223	static void	410	static void
224	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	412	{
226	int i;	413	int i;
227		414
228	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
230	}	417	}
231		418
232	static void	419	inline void
233	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
234	{	421	{
235	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	423	struct ev_io *w;
237		424
238	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
239	{	426	{
240	int ev = w->events & events;	427	int ev = w->events & revents;
241		428
242	if (ev)	429	if (ev)
243	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
244	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
245	}	438	}
246		439
247	/*****************************************************************************/	440	/*****************************************************************************/
248		441
249	static int *fdchanges;	442	inline void
250	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
251
252	static void
253	fd_reify (void)
254	{	444	{
255	int i;	445	int i;
256		446
257	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
258	{	448	{
…		…
260	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	451	struct ev_io *w;
262		452
263	int events = 0;	453	int events = 0;
264		454
265	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
266	events |= w->events;	456	events |= w->events;
267		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
268	anfd->reify = 0;	467	anfd->reify = 0;
269		468
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	470	anfd->events = events;
274	}
275	}	471	}
276		472
277	fdchangecnt = 0;	473	fdchangecnt = 0;
278	}	474	}
279		475
280	static void	476	static void
281	fd_change (int fd)	477	fd_change (EV_P_ int fd)
282	{	478	{
283	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
284	return;	480	return;
285		481
286	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
287		483
288	++fdchangecnt;	484	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
290	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
291	}	487	}
292		488
293	static void	489	static void
294	fd_kill (int fd)	490	fd_kill (EV_P_ int fd)
295	{	491	{
296	struct ev_io *w;	492	struct ev_io *w;
297		493
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
300	{	495	{
301	ev_io_stop (w);	496	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
303	}	498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
304	}	509	}
305		510
306	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
307	static void	512	static void
308	fd_ebadf (void)	513	fd_ebadf (EV_P)
309	{	514	{
310	int fd;	515	int fd;
311		516
312	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	518	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	520	fd_kill (EV_A_ fd);
316	}	521	}
317		522
318	/* called on ENOMEM in select/poll to kill some fds and retry */	523	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	524	static void
320	fd_enomem (void)	525	fd_enomem (EV_P)
321	{	526	{
322	int fd = anfdmax;	527	int fd;
323		528
324	while (fd--)	529	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	530	if (anfds [fd].events)
326	{	531	{
327	close (fd);
328	fd_kill (fd);	532	fd_kill (EV_A_ fd);
329	return;	533	return;
330	}	534	}
331	}	535	}
332		536
		537	/* usually called after fork if method needs to re-arm all fds from scratch */
		538	static void
		539	fd_rearm_all (EV_P)
		540	{
		541	int fd;
		542
		543	/* this should be highly optimised to not do anything but set a flag */
		544	for (fd = 0; fd < anfdmax; ++fd)
		545	if (anfds [fd].events)
		546	{
		547	anfds [fd].events = 0;
		548	fd_change (EV_A_ fd);
		549	}
		550	}
		551
333	/*****************************************************************************/	552	/*****************************************************************************/
334		553
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	554	static void
342	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
343	{	556	{
344	WT w = timers [k];	557	WT w = heap [k];
345		558
346	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
347	{	560	{
348	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
350	k >>= 1;	563	k >>= 1;
351	}	564	}
352		565
353	timers [k] = w;	566	heap [k] = w;
354	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
355		568
356	}	569	}
357		570
358	static void	571	static void
359	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
360	{	573	{
361	WT w = timers [k];	574	WT w = heap [k];
362		575
363	while (k < (N >> 1))	576	while (k < (N >> 1))
364	{	577	{
365	int j = k << 1;	578	int j = k << 1;
366		579
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	581	++j;
369		582
370	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
371	break;	584	break;
372		585
373	timers [k] = timers [j];	586	heap [k] = heap [j];
374	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
375	k = j;	588	k = j;
376	}	589	}
377		590
378	timers [k] = w;	591	heap [k] = w;
379	timers [k]->active = k + 1;	592	((W)heap [k])->active = k + 1;
		593	}
		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
380	}	600	}
381		601
382	/*****************************************************************************/	602	/*****************************************************************************/
383		603
384	typedef struct	604	typedef struct
385	{	605	{
386	struct ev_signal *head;	606	WL head;
387	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
388	} ANSIG;	608	} ANSIG;
389		609
390	static ANSIG *signals;	610	static ANSIG *signals;
391	static int signalmax;	611	static int signalmax;
…		…
407	}	627	}
408		628
409	static void	629	static void
410	sighandler (int signum)	630	sighandler (int signum)
411	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
412	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
413		637
414	if (!gotsig)	638	if (!gotsig)
415	{	639	{
		640	int old_errno = errno;
416	gotsig = 1;	641	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
418	}	644	}
419	}	645	}
420		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 || signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
421	static void	667	static void
422	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	669	{
424	struct ev_signal *w;
425	int signum;	670	int signum;
426		671
427	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	673	gotsig = 0;
429		674
430	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
432	{	677	ev_feed_signal_event (EV_A_ signum + 1);
433	signals [signum].gotsig = 0;
434
435	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);
437	}
438	}	678	}
439		679
440	static void	680	static void
441	siginit (void)	681	fd_intern (int fd)
442	{	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	fcntl (fd, F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445
446	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	689	#endif
		690	}
		691
		692	static void
		693	siginit (EV_P)
		694	{
		695	fd_intern (sigpipe [0]);
		696	fd_intern (sigpipe [1]);
449		697
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	701	}
453		702
454	/*****************************************************************************/	703	/*****************************************************************************/
455		704
456	static struct ev_idle **idles;
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466
467	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
468	static struct ev_signal childev;	709	static struct ev_signal childev;
469		710
470	#ifndef WCONTINUED	711	#ifndef WCONTINUED
471	# define WCONTINUED 0	712	# define WCONTINUED 0
472	#endif	713	#endif
473		714
474	static void	715	static void
475	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	717	{
477	struct ev_child *w;	718	struct ev_child *w;
		719
		720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		721	if (w->pid == pid || !w->pid)
		722	{
		723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		724	w->rpid = pid;
		725	w->rstatus = status;
		726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		727	}
		728	}
		729
		730	static void
		731	childcb (EV_P_ struct ev_signal *sw, int revents)
		732	{
478	int pid, status;	733	int pid, status;
479		734
480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
482	if (w->pid == pid || !w->pid)	737	/* make sure we are called again until all childs have been reaped */
483	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	739
485	event ((W)w, EV_CHILD);	740	child_reap (EV_A_ sw, pid, pid, status);
486	}	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		742	}
487	}	743	}
		744
		745	#endif
488		746
489	/*****************************************************************************/	747	/*****************************************************************************/
490		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
491	#if EV_USE_KQUEUE	752	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	753	# include "ev_kqueue.c"
493	#endif	754	#endif
494	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
495	# include "ev_epoll.c"	756	# include "ev_epoll.c"
…		…
511	ev_version_minor (void)	772	ev_version_minor (void)
512	{	773	{
513	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
514	}	775	}
515		776
516	/* return true if we are running with elevated privileges and ignore env variables */	777	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	778	static int
518	enable_secure ()	779	enable_secure (void)
519	{	780	{
		781	#ifdef _WIN32
		782	return 0;
		783	#else
520	return getuid () != geteuid ()	784	return getuid () != geteuid ()
521	|| getgid () != getegid ();	785	|| getgid () != getegid ();
		786	#endif
522	}	787	}
523		788
524	int ev_init (int methods)	789	unsigned int
		790	ev_method (EV_P)
525	{	791	{
		792	return method;
		793	}
		794
		795	static void
		796	loop_init (EV_P_ unsigned int flags)
		797	{
526	if (!ev_method)	798	if (!method)
527	{	799	{
528	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
529	{	801	{
530	struct timespec ts;	802	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	804	have_monotonic = 1;
533	}	805	}
534	#endif	806	#endif
535		807
536	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
537	now = get_clock ();	809	mn_now = get_clock ();
538	now_floor = now;	810	now_floor = mn_now;
539	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
540		812
541	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV)
542	return 0;	814	&& !enable_secure ()
543		815	&& getenv ("LIBEV_FLAGS"))
544	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	816	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		817
		818	if (!(flags & EVMETHOD_ALL))
		819	{
		820	flags |= EVMETHOD_ALL;
		821	#if EV_USE_KQUEUE && !defined (__NetBSD__)
		822	/* kqueue is borked on everything but netbsd apparently */
		823	/* it usually doesn't work correctly on anything but sockets and pipes */
		824	flags &= ~EVMETHOD_KQUEUE;
		825	#endif
		826	}
		827
550	ev_method = 0;	828	method = 0;
		829	#if EV_USE_PORT
		830	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		831	#endif
551	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	833	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
553	#endif	834	#endif
554	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	836	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
556	#endif	837	#endif
557	#if EV_USE_POLL	838	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	839	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
559	#endif	840	#endif
560	#if EV_USE_SELECT	841	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	842	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
562	#endif	843	#endif
563		844
		845	ev_init (&sigev, sigcb);
		846	ev_set_priority (&sigev, EV_MAXPRI);
		847	}
		848	}
		849
		850	static void
		851	loop_destroy (EV_P)
		852	{
		853	int i;
		854
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		863	#endif
		864	#if EV_USE_POLL
		865	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		866	#endif
		867	#if EV_USE_SELECT
		868	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		869	#endif
		870
		871	for (i = NUMPRI; i--; )
		872	array_free (pending, [i]);
		873
		874	/* have to use the microsoft-never-gets-it-right macro */
		875	array_free (fdchange, EMPTY0);
		876	array_free (timer, EMPTY0);
		877	#if EV_PERIODICS
		878	array_free (periodic, EMPTY0);
		879	#endif
		880	array_free (idle, EMPTY0);
		881	array_free (prepare, EMPTY0);
		882	array_free (check, EMPTY0);
		883
		884	method = 0;
		885	}
		886
		887	static void
		888	loop_fork (EV_P)
		889	{
		890	#if EV_USE_PORT
		891	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		898	#endif
		899
		900	if (ev_is_active (&sigev))
		901	{
		902	/* default loop */
		903
		904	ev_ref (EV_A);
		905	ev_io_stop (EV_A_ &sigev);
		906	close (sigpipe [0]);
		907	close (sigpipe [1]);
		908
		909	while (pipe (sigpipe))
		910	syserr ("(libev) error creating pipe");
		911
		912	siginit (EV_A);
		913	}
		914
		915	postfork = 0;
		916	}
		917
		918	#if EV_MULTIPLICITY
		919	struct ev_loop *
		920	ev_loop_new (unsigned int flags)
		921	{
		922	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		923
		924	memset (loop, 0, sizeof (struct ev_loop));
		925
		926	loop_init (EV_A_ flags);
		927
		928	if (ev_method (EV_A))
		929	return loop;
		930
		931	return 0;
		932	}
		933
		934	void
		935	ev_loop_destroy (EV_P)
		936	{
		937	loop_destroy (EV_A);
		938	ev_free (loop);
		939	}
		940
		941	void
		942	ev_loop_fork (EV_P)
		943	{
		944	postfork = 1;
		945	}
		946
		947	#endif
		948
		949	#if EV_MULTIPLICITY
		950	struct ev_loop *
		951	ev_default_loop_init (unsigned int flags)
		952	#else
		953	int
		954	ev_default_loop (unsigned int flags)
		955	#endif
		956	{
		957	if (sigpipe [0] == sigpipe [1])
		958	if (pipe (sigpipe))
		959	return 0;
		960
		961	if (!ev_default_loop_ptr)
		962	{
		963	#if EV_MULTIPLICITY
		964	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		965	#else
		966	ev_default_loop_ptr = 1;
		967	#endif
		968
		969	loop_init (EV_A_ flags);
		970
564	if (ev_method)	971	if (ev_method (EV_A))
565	{	972	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	973	siginit (EV_A);
568		974
		975	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	976	ev_signal_init (&childev, childcb, SIGCHLD);
		977	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	978	ev_signal_start (EV_A_ &childev);
		979	ev_unref (EV_A); /* child watcher should not keep loop alive */
		980	#endif
571	}	981	}
		982	else
		983	ev_default_loop_ptr = 0;
572	}	984	}
573		985
574	return ev_method;	986	return ev_default_loop_ptr;
		987	}
		988
		989	void
		990	ev_default_destroy (void)
		991	{
		992	#if EV_MULTIPLICITY
		993	struct ev_loop *loop = ev_default_loop_ptr;
		994	#endif
		995
		996	#ifndef _WIN32
		997	ev_ref (EV_A); /* child watcher */
		998	ev_signal_stop (EV_A_ &childev);
		999	#endif
		1000
		1001	ev_ref (EV_A); /* signal watcher */
		1002	ev_io_stop (EV_A_ &sigev);
		1003
		1004	close (sigpipe [0]); sigpipe [0] = 0;
		1005	close (sigpipe [1]); sigpipe [1] = 0;
		1006
		1007	loop_destroy (EV_A);
		1008	}
		1009
		1010	void
		1011	ev_default_fork (void)
		1012	{
		1013	#if EV_MULTIPLICITY
		1014	struct ev_loop *loop = ev_default_loop_ptr;
		1015	#endif
		1016
		1017	if (method)
		1018	postfork = 1;
575	}	1019	}
576		1020
577	/*****************************************************************************/	1021	/*****************************************************************************/
578		1022
579	void
580	ev_fork_prepare (void)
581	{
582	/* nop */
583	}
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif
598
599	ev_io_stop (&sigev);
600	close (sigpipe [0]);
601	close (sigpipe [1]);
602	pipe (sigpipe);
603	siginit ();
604	}
605
606	/*****************************************************************************/
607
608	static void	1023	static int
		1024	any_pending (EV_P)
		1025	{
		1026	int pri;
		1027
		1028	for (pri = NUMPRI; pri--; )
		1029	if (pendingcnt [pri])
		1030	return 1;
		1031
		1032	return 0;
		1033	}
		1034
		1035	inline void
609	call_pending (void)	1036	call_pending (EV_P)
610	{	1037	{
611	int pri;	1038	int pri;
612		1039
613	for (pri = NUMPRI; pri--; )	1040	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	1041	while (pendingcnt [pri])
615	{	1042	{
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		1044
618	if (p->w)	1045	if (expect_true (p->w))
619	{	1046	{
620	p->w->pending = 0;	1047	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	1048	EV_CB_INVOKE (p->w, p->events);
622	}	1049	}
623	}	1050	}
624	}	1051	}
625		1052
626	static void	1053	inline void
627	timers_reify (void)	1054	timers_reify (EV_P)
628	{	1055	{
629	while (timercnt && timers [0]->at <= now)	1056	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1057	{
631	struct ev_timer *w = timers [0];	1058	struct ev_timer *w = timers [0];
		1059
		1060	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		1061
633	/* first reschedule or stop timer */	1062	/* first reschedule or stop timer */
634	if (w->repeat)	1063	if (w->repeat)
635	{	1064	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1065	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1066
637	w->at = now + w->repeat;	1067	((WT)w)->at += w->repeat;
		1068	if (((WT)w)->at < mn_now)
		1069	((WT)w)->at = mn_now;
		1070
638	downheap ((WT *)timers, timercnt, 0);	1071	downheap ((WT *)timers, timercnt, 0);
639	}	1072	}
640	else	1073	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1074	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1075
643	event ((W)w, EV_TIMEOUT);	1076	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1077	}
645	}	1078	}
646		1079
647	static void	1080	#if EV_PERIODICS
		1081	inline void
648	periodics_reify (void)	1082	periodics_reify (EV_P)
649	{	1083	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1084	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1085	{
652	struct ev_periodic *w = periodics [0];	1086	struct ev_periodic *w = periodics [0];
653		1087
		1088	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1089
654	/* first reschedule or stop timer */	1090	/* first reschedule or stop timer */
655	if (w->interval)	1091	if (w->reschedule_cb)
656	{	1092	{
		1093	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1094	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1095	downheap ((WT *)periodics, periodiccnt, 0);
		1096	}
		1097	else if (w->interval)
		1098	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1099	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1100	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	1101	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1102	}
661	else	1103	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1104	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1105
664	event ((W)w, EV_PERIODIC);	1106	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1107	}
666	}	1108	}
667		1109
668	static void	1110	static void
669	periodics_reschedule (ev_tstamp diff)	1111	periodics_reschedule (EV_P)
670	{	1112	{
671	int i;	1113	int i;
672		1114
673	/* adjust periodics after time jump */	1115	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1116	for (i = 0; i < periodiccnt; ++i)
675	{	1117	{
676	struct ev_periodic *w = periodics [i];	1118	struct ev_periodic *w = periodics [i];
677		1119
		1120	if (w->reschedule_cb)
		1121	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1122	else if (w->interval)
679	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1123	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
681
682	if (fabs (diff) >= 1e-4)
683	{
684	ev_periodic_stop (w);
685	ev_periodic_start (w);
686
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}
689	}
690	}	1124	}
691	}
692		1125
693	static int	1126	/* now rebuild the heap */
		1127	for (i = periodiccnt >> 1; i--; )
		1128	downheap ((WT *)periodics, periodiccnt, i);
		1129	}
		1130	#endif
		1131
		1132	inline int
694	time_update_monotonic (void)	1133	time_update_monotonic (EV_P)
695	{	1134	{
696	now = get_clock ();	1135	mn_now = get_clock ();
697		1136
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1137	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1138	{
700	ev_now = now + diff;	1139	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1140	return 0;
702	}	1141	}
703	else	1142	else
704	{	1143	{
705	now_floor = now;	1144	now_floor = mn_now;
706	ev_now = ev_time ();	1145	ev_rt_now = ev_time ();
707	return 1;	1146	return 1;
708	}	1147	}
709	}	1148	}
710		1149
711	static void	1150	inline void
712	time_update (void)	1151	time_update (EV_P)
713	{	1152	{
714	int i;	1153	int i;
715		1154
716	#if EV_USE_MONOTONIC	1155	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1156	if (expect_true (have_monotonic))
718	{	1157	{
719	if (time_update_monotonic ())	1158	if (time_update_monotonic (EV_A))
720	{	1159	{
721	ev_tstamp odiff = diff;	1160	ev_tstamp odiff = rtmn_diff;
722		1161
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1162	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	1163	{
725	diff = ev_now - now;	1164	rtmn_diff = ev_rt_now - mn_now;
726		1165
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1166	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1167	return; /* all is well */
729		1168
730	ev_now = ev_time ();	1169	ev_rt_now = ev_time ();
731	now = get_clock ();	1170	mn_now = get_clock ();
732	now_floor = now;	1171	now_floor = mn_now;
733	}	1172	}
734		1173
		1174	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1175	periodics_reschedule (EV_A);
		1176	# endif
736	/* no timer adjustment, as the monotonic clock doesn't jump */	1177	/* no timer adjustment, as the monotonic clock doesn't jump */
		1178	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	1179	}
738	}	1180	}
739	else	1181	else
740	#endif	1182	#endif
741	{	1183	{
742	ev_now = ev_time ();	1184	ev_rt_now = ev_time ();
743		1185
744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1186	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	1187	{
		1188	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1189	periodics_reschedule (EV_A);
		1190	#endif
747		1191
748	/* adjust timers. this is easy, as the offset is the same for all */	1192	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	1193	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1194	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1195	}
752		1196
753	now = ev_now;	1197	mn_now = ev_rt_now;
754	}	1198	}
755	}	1199	}
756		1200
757	int ev_loop_done;	1201	void
		1202	ev_ref (EV_P)
		1203	{
		1204	++activecnt;
		1205	}
758		1206
		1207	void
		1208	ev_unref (EV_P)
		1209	{
		1210	--activecnt;
		1211	}
		1212
		1213	static int loop_done;
		1214
		1215	void
759	void ev_loop (int flags)	1216	ev_loop (EV_P_ int flags)
760	{	1217	{
761	double block;	1218	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1219	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
763		1220
764	do	1221	while (activecnt)
765	{	1222	{
766	/* queue check watchers (and execute them) */	1223	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1224	if (expect_false (preparecnt))
768	{	1225	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1226	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1227	call_pending (EV_A);
771	}	1228	}
772		1229
		1230	/* we might have forked, so reify kernel state if necessary */
		1231	if (expect_false (postfork))
		1232	loop_fork (EV_A);
		1233
773	/* update fd-related kernel structures */	1234	/* update fd-related kernel structures */
774	fd_reify ();	1235	fd_reify (EV_A);
775		1236
776	/* calculate blocking time */	1237	/* calculate blocking time */
777		1238
778	/* we only need this for !monotonic clockor timers, but as we basically	1239	/* we only need this for !monotonic clock or timers, but as we basically
779	always have timers, we just calculate it always */	1240	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1241	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1242	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1243	time_update_monotonic (EV_A);
783	else	1244	else
784	#endif	1245	#endif
785	{	1246	{
786	ev_now = ev_time ();	1247	ev_rt_now = ev_time ();
787	now = ev_now;	1248	mn_now = ev_rt_now;
788	}	1249	}
789		1250
790	if (flags & EVLOOP_NONBLOCK || idlecnt)	1251	if (flags & EVLOOP_NONBLOCK || idlecnt)
791	block = 0.;	1252	block = 0.;
792	else	1253	else
793	{	1254	{
794	block = MAX_BLOCKTIME;	1255	block = MAX_BLOCKTIME;
795		1256
796	if (timercnt)	1257	if (timercnt)
797	{	1258	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1259	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1260	if (block > to) block = to;
800	}	1261	}
801		1262
		1263	#if EV_PERIODICS
802	if (periodiccnt)	1264	if (periodiccnt)
803	{	1265	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1266	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
805	if (block > to) block = to;	1267	if (block > to) block = to;
806	}	1268	}
		1269	#endif
807		1270
808	if (block < 0.) block = 0.;	1271	if (expect_false (block < 0.)) block = 0.;
809	}	1272	}
810		1273
811	method_poll (block);	1274	method_poll (EV_A_ block);
812		1275
813	/* update ev_now, do magic */	1276	/* update ev_rt_now, do magic */
814	time_update ();	1277	time_update (EV_A);
815		1278
816	/* queue pending timers and reschedule them */	1279	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1280	timers_reify (EV_A); /* relative timers called last */
		1281	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1282	periodics_reify (EV_A); /* absolute timers called first */
		1283	#endif
819		1284
820	/* queue idle watchers unless io or timers are pending */	1285	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1286	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1287	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1288
824	/* queue check watchers, to be executed first */	1289	/* queue check watchers, to be executed first */
825	if (checkcnt)	1290	if (expect_false (checkcnt))
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1291	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1292
828	call_pending ();	1293	call_pending (EV_A);
829	}
830	while (!ev_loop_done);
831		1294
		1295	if (expect_false (loop_done))
		1296	break;
		1297	}
		1298
832	if (ev_loop_done != 2)	1299	if (loop_done != 2)
833	ev_loop_done = 0;	1300	loop_done = 0;
		1301	}
		1302
		1303	void
		1304	ev_unloop (EV_P_ int how)
		1305	{
		1306	loop_done = how;
834	}	1307	}
835		1308
836	/*****************************************************************************/	1309	/*****************************************************************************/
837		1310
838	static void	1311	inline void
839	wlist_add (WL *head, WL elem)	1312	wlist_add (WL *head, WL elem)
840	{	1313	{
841	elem->next = *head;	1314	elem->next = *head;
842	*head = elem;	1315	*head = elem;
843	}	1316	}
844		1317
845	static void	1318	inline void
846	wlist_del (WL *head, WL elem)	1319	wlist_del (WL *head, WL elem)
847	{	1320	{
848	while (*head)	1321	while (*head)
849	{	1322	{
850	if (*head == elem)	1323	if (*head == elem)
…		…
855		1328
856	head = &(*head)->next;	1329	head = &(*head)->next;
857	}	1330	}
858	}	1331	}
859		1332
860	static void	1333	inline void
861	ev_clear_pending (W w)	1334	ev_clear_pending (EV_P_ W w)
862	{	1335	{
863	if (w->pending)	1336	if (w->pending)
864	{	1337	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1338	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1339	w->pending = 0;
867	}	1340	}
868	}	1341	}
869		1342
870	static void	1343	inline void
871	ev_start (W w, int active)	1344	ev_start (EV_P_ W w, int active)
872	{	1345	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1346	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1347	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1348
876	w->active = active;	1349	w->active = active;
		1350	ev_ref (EV_A);
877	}	1351	}
878		1352
879	static void	1353	inline void
880	ev_stop (W w)	1354	ev_stop (EV_P_ W w)
881	{	1355	{
		1356	ev_unref (EV_A);
882	w->active = 0;	1357	w->active = 0;
883	}	1358	}
884		1359
885	/*****************************************************************************/	1360	/*****************************************************************************/
886		1361
887	void	1362	void
888	ev_io_start (struct ev_io *w)	1363	ev_io_start (EV_P_ struct ev_io *w)
889	{	1364	{
890	int fd = w->fd;	1365	int fd = w->fd;
891		1366
892	if (ev_is_active (w))	1367	if (expect_false (ev_is_active (w)))
893	return;	1368	return;
894		1369
895	assert (("ev_io_start called with negative fd", fd >= 0));	1370	assert (("ev_io_start called with negative fd", fd >= 0));
896		1371
897	ev_start ((W)w, 1);	1372	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1373	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1374	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1375
901	fd_change (fd);	1376	fd_change (EV_A_ fd);
902	}	1377	}
903		1378
904	void	1379	void
905	ev_io_stop (struct ev_io *w)	1380	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1381	{
907	ev_clear_pending ((W)w);	1382	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1383	if (expect_false (!ev_is_active (w)))
909	return;	1384	return;
910		1385
		1386	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1387
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1388	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1389	ev_stop (EV_A_ (W)w);
913		1390
914	fd_change (w->fd);	1391	fd_change (EV_A_ w->fd);
915	}	1392	}
916		1393
917	void	1394	void
918	ev_timer_start (struct ev_timer *w)	1395	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1396	{
920	if (ev_is_active (w))	1397	if (expect_false (ev_is_active (w)))
921	return;	1398	return;
922		1399
923	w->at += now;	1400	((WT)w)->at += mn_now;
924		1401
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1402	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1403
927	ev_start ((W)w, ++timercnt);	1404	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1405	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
929	timers [timercnt - 1] = w;	1406	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1407	upheap ((WT *)timers, timercnt - 1);
931	}
932		1408
		1409	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1410	}
		1411
933	void	1412	void
934	ev_timer_stop (struct ev_timer *w)	1413	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1414	{
936	ev_clear_pending ((W)w);	1415	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1416	if (expect_false (!ev_is_active (w)))
938	return;	1417	return;
939		1418
		1419	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1420
940	if (w->active < timercnt--)	1421	if (expect_true (((W)w)->active < timercnt--))
941	{	1422	{
942	timers [w->active - 1] = timers [timercnt];	1423	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1424	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1425	}
945		1426
946	w->at = w->repeat;	1427	((WT)w)->at -= mn_now;
947		1428
948	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
949	}	1430	}
950		1431
951	void	1432	void
952	ev_timer_again (struct ev_timer *w)	1433	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1434	{
954	if (ev_is_active (w))	1435	if (ev_is_active (w))
955	{	1436	{
956	if (w->repeat)	1437	if (w->repeat)
957	{	1438	{
958	w->at = now + w->repeat;	1439	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1440	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1441	}
961	else	1442	else
962	ev_timer_stop (w);	1443	ev_timer_stop (EV_A_ w);
963	}	1444	}
964	else if (w->repeat)	1445	else if (w->repeat)
		1446	{
		1447	w->at = w->repeat;
965	ev_timer_start (w);	1448	ev_timer_start (EV_A_ w);
		1449	}
966	}	1450	}
967		1451
		1452	#if EV_PERIODICS
968	void	1453	void
969	ev_periodic_start (struct ev_periodic *w)	1454	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1455	{
971	if (ev_is_active (w))	1456	if (expect_false (ev_is_active (w)))
972	return;	1457	return;
973		1458
		1459	if (w->reschedule_cb)
		1460	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1461	else if (w->interval)
		1462	{
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1463	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1464	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1465	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1466	}
979		1467
980	ev_start ((W)w, ++periodiccnt);	1468	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1469	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
982	periodics [periodiccnt - 1] = w;	1470	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1471	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1472
		1473	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1474	}
		1475
986	void	1476	void
987	ev_periodic_stop (struct ev_periodic *w)	1477	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1478	{
989	ev_clear_pending ((W)w);	1479	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1480	if (expect_false (!ev_is_active (w)))
991	return;	1481	return;
992		1482
		1483	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1484
993	if (w->active < periodiccnt--)	1485	if (expect_true (((W)w)->active < periodiccnt--))
994	{	1486	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1487	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1488	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1489	}
998		1490
999	ev_stop ((W)w);	1491	ev_stop (EV_A_ (W)w);
1000	}	1492	}
1001		1493
1002	void	1494	void
		1495	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1496	{
		1497	/* TODO: use adjustheap and recalculation */
		1498	ev_periodic_stop (EV_A_ w);
		1499	ev_periodic_start (EV_A_ w);
		1500	}
		1501	#endif
		1502
		1503	void
1003	ev_signal_start (struct ev_signal *w)	1504	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1505	{
1005	if (ev_is_active (w))	1506	if (expect_false (ev_is_active (w)))
1006	return;	1507	return;
1007		1508
		1509	ev_start (EV_A_ (W)w, ++idlecnt);
		1510	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1511	idles [idlecnt - 1] = w;
		1512	}
		1513
		1514	void
		1515	ev_idle_stop (EV_P_ struct ev_idle *w)
		1516	{
		1517	ev_clear_pending (EV_A_ (W)w);
		1518	if (expect_false (!ev_is_active (w)))
		1519	return;
		1520
		1521	idles [((W)w)->active - 1] = idles [--idlecnt];
		1522	ev_stop (EV_A_ (W)w);
		1523	}
		1524
		1525	void
		1526	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1527	{
		1528	if (expect_false (ev_is_active (w)))
		1529	return;
		1530
		1531	ev_start (EV_A_ (W)w, ++preparecnt);
		1532	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1533	prepares [preparecnt - 1] = w;
		1534	}
		1535
		1536	void
		1537	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1538	{
		1539	ev_clear_pending (EV_A_ (W)w);
		1540	if (expect_false (!ev_is_active (w)))
		1541	return;
		1542
		1543	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1544	ev_stop (EV_A_ (W)w);
		1545	}
		1546
		1547	void
		1548	ev_check_start (EV_P_ struct ev_check *w)
		1549	{
		1550	if (expect_false (ev_is_active (w)))
		1551	return;
		1552
		1553	ev_start (EV_A_ (W)w, ++checkcnt);
		1554	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1555	checks [checkcnt - 1] = w;
		1556	}
		1557
		1558	void
		1559	ev_check_stop (EV_P_ struct ev_check *w)
		1560	{
		1561	ev_clear_pending (EV_A_ (W)w);
		1562	if (expect_false (!ev_is_active (w)))
		1563	return;
		1564
		1565	checks [((W)w)->active - 1] = checks [--checkcnt];
		1566	ev_stop (EV_A_ (W)w);
		1567	}
		1568
		1569	#ifndef SA_RESTART
		1570	# define SA_RESTART 0
		1571	#endif
		1572
		1573	void
		1574	ev_signal_start (EV_P_ struct ev_signal *w)
		1575	{
		1576	#if EV_MULTIPLICITY
		1577	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1578	#endif
		1579	if (expect_false (ev_is_active (w)))
		1580	return;
		1581
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1582	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1583
1010	ev_start ((W)w, 1);	1584	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1585	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1586	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1587
1014	if (!w->next)	1588	if (!((WL)w)->next)
1015	{	1589	{
		1590	#if _WIN32
		1591	signal (w->signum, sighandler);
		1592	#else
1016	struct sigaction sa;	1593	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1594	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1595	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1596	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1597	sigaction (w->signum, &sa, 0);
		1598	#endif
1021	}	1599	}
1022	}	1600	}
1023		1601
1024	void	1602	void
1025	ev_signal_stop (struct ev_signal *w)	1603	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1604	{
1027	ev_clear_pending ((W)w);	1605	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1606	if (expect_false (!ev_is_active (w)))
1029	return;	1607	return;
1030		1608
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1609	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1610	ev_stop (EV_A_ (W)w);
1033		1611
1034	if (!signals [w->signum - 1].head)	1612	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1613	signal (w->signum, SIG_DFL);
1036	}	1614	}
1037		1615
1038	void	1616	void
1039	ev_idle_start (struct ev_idle *w)	1617	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1618	{
		1619	#if EV_MULTIPLICITY
		1620	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1621	#endif
1041	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
1042	return;	1623	return;
1043		1624
1044	ev_start ((W)w, ++idlecnt);	1625	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1626	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1627	}
1048		1628
1049	void	1629	void
1050	ev_idle_stop (struct ev_idle *w)	1630	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1631	{
1052	ev_clear_pending ((W)w);	1632	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
1054	return;	1634	return;
1055		1635
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1636	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1637	ev_stop (EV_A_ (W)w);
1123	}	1638	}
1124		1639
1125	/*****************************************************************************/	1640	/*****************************************************************************/
1126		1641
1127	struct ev_once	1642	struct ev_once
…		…
1131	void (*cb)(int revents, void *arg);	1646	void (*cb)(int revents, void *arg);
1132	void *arg;	1647	void *arg;
1133	};	1648	};
1134		1649
1135	static void	1650	static void
1136	once_cb (struct ev_once *once, int revents)	1651	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1652	{
1138	void (*cb)(int revents, void *arg) = once->cb;	1653	void (*cb)(int revents, void *arg) = once->cb;
1139	void *arg = once->arg;	1654	void *arg = once->arg;
1140		1655
1141	ev_io_stop (&once->io);	1656	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1657	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1658	ev_free (once);
1144		1659
1145	cb (revents, arg);	1660	cb (revents, arg);
1146	}	1661	}
1147		1662
1148	static void	1663	static void
1149	once_cb_io (struct ev_io *w, int revents)	1664	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1665	{
1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1666	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1152	}	1667	}
1153		1668
1154	static void	1669	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1670	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1671	{
1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1672	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1158	}	1673	}
1159		1674
1160	void	1675	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1676	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1162	{	1677	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1678	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1164		1679
1165	if (!once)	1680	if (expect_false (!once))
		1681	{
1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1682	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1167	else	1683	return;
1168	{	1684	}
		1685
1169	once->cb = cb;	1686	once->cb = cb;
1170	once->arg = arg;	1687	once->arg = arg;
1171		1688
1172	ev_watcher_init (&once->io, once_cb_io);	1689	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1690	if (fd >= 0)
1174	{	1691	{
1175	ev_io_set (&once->io, fd, events);	1692	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1693	ev_io_start (EV_A_ &once->io);
1177	}	1694	}
1178		1695
1179	ev_watcher_init (&once->to, once_cb_to);	1696	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1697	if (timeout >= 0.)
1181	{	1698	{
1182	ev_timer_set (&once->to, timeout, 0.);	1699	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1700	ev_timer_start (EV_A_ &once->to);
1184	}
1185	}
1186	}
1187
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{	1701	}
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}	1702	}
1265		1703
		1704	#ifdef __cplusplus
		1705	}
1266	#endif	1706	#endif
1267		1707
1268
1269
1270

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