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

Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#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) */	180	#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 */	181	#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 */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
117		210
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
		217	/*****************************************************************************/
		218
		219	static void (syserr_cb)(const char msg);
		220
		221	void ev_set_syserr_cb (void (cb)(const char msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void (alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void (cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
		267	typedef struct
		268	{
		269	WL head;
		270	unsigned char events;
		271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
		275	} ANFD;
		276
		277	typedef struct
		278	{
		279	W w;
		280	int events;
		281	} ANPENDING;
		282
		283	#if EV_MULTIPLICITY
		284
		285	struct ev_loop
		286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
		289	#define VAR(name,decl) decl;
		290	#include "ev_vars.h"
		291	#undef VAR
		292	};
		293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
		297
		298	#else
		299
119	ev_tstamp ev_now;	300	ev_tstamp ev_rt_now;
120	int ev_method;	301	#define VAR(name,decl) static decl;
		302	#include "ev_vars.h"
		303	#undef VAR
121		304
122	static int have_monotonic; /* runtime */	305	static int ev_default_loop_ptr;
123		306
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	307	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		308
128	/*****************************************************************************/	309	/*****************************************************************************/
129		310
130	ev_tstamp	311	ev_tstamp
131	ev_time (void)	312	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	320	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	321	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	322	#endif
142	}	323	}
143		324
144	static ev_tstamp	325	inline ev_tstamp
145	get_clock (void)	326	get_clock (void)
146	{	327	{
147	#if EV_USE_MONOTONIC	328	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	329	if (expect_true (have_monotonic))
149	{	330	{
…		…
154	#endif	335	#endif
155		336
156	return ev_time ();	337	return ev_time ();
157	}	338	}
158		339
		340	#if EV_MULTIPLICITY
		341	ev_tstamp
		342	ev_now (EV_P)
		343	{
		344	return ev_rt_now;
		345	}
		346	#endif
		347
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		349
161	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
163	{ \	352	{ \
164	int newcnt = cur; \	353	int newcnt = cur; \
165	do \	354	do \
166	{ \	355	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	357	} \
169	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
170	\	359	\
171	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	362	cur = newcnt; \
174	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		375
176	/*****************************************************************************/	376	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_watcher_list *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		377
188	static void	378	static void
189	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
190	{	380	{
191	while (count--)	381	while (count--)
…		…
196		386
197	++base;	387	++base;
198	}	388	}
199	}	389	}
200		390
201	typedef struct	391	void
		392	ev_feed_event (EV_P_ void *w, int revents)
202	{	393	{
203	W w;	394	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		395
207	static ANPENDING *pendings [NUMPRI];	396	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	397	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	399	return;
217	}	400	}
218		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
219	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	409	}
224		410
225	static void	411	static void
226	queue_events (W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	413	{
228	int i;	414	int i;
229		415
230	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
232	}	418	}
233		419
234	static void	420	inline void
235	fd_event (int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
236	{	422	{
237	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	424	struct ev_io *w;
239		425
240	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	427	{
242	int ev = w->events & events;	428	int ev = w->events & revents;
243		429
244	if (ev)	430	if (ev)
245	event ((W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
246	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
247	}	439	}
248		440
249	/*****************************************************************************/	441	/*****************************************************************************/
250		442
251	static int *fdchanges;	443	inline void
252	static int fdchangemax, fdchangecnt;	444	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	445	{
257	int i;	446	int i;
258		447
259	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
260	{	449	{
…		…
265	int events = 0;	454	int events = 0;
266		455
267	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	457	events \|= w->events;
269		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
270	anfd->reify = 0;	468	anfd->reify = 0;
271		469
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	471	anfd->events = events;
276	}
277	}	472	}
278		473
279	fdchangecnt = 0;	474	fdchangecnt = 0;
280	}	475	}
281		476
282	static void	477	static void
283	fd_change (int fd)	478	fd_change (EV_P_ int fd)
284	{	479	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
286	return;	481	return;
287		482
288	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
289		484
290	++fdchangecnt;	485	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
293	}	488	}
294		489
295	static void	490	static void
296	fd_kill (int fd)	491	fd_kill (EV_P_ int fd)
297	{	492	{
298	struct ev_io *w;	493	struct ev_io *w;
299		494
300	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
301	{	496	{
302	ev_io_stop (w);	497	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
304	}	499	}
		500	}
		501
		502	inline int
		503	fd_valid (int fd)
		504	{
		505	#ifdef _WIN32
		506	return _get_osfhandle (fd) != -1;
		507	#else
		508	return fcntl (fd, F_GETFD) != -1;
		509	#endif
305	}	510	}
306		511
307	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
308	static void	513	static void
309	fd_ebadf (void)	514	fd_ebadf (EV_P)
310	{	515	{
311	int fd;	516	int fd;
312		517
313	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	519	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
316	fd_kill (fd);	521	fd_kill (EV_A_ fd);
317	}	522	}
318		523
319	/* called on ENOMEM in select/poll to kill some fds and retry */	524	/* called on ENOMEM in select/poll to kill some fds and retry */
320	static void	525	static void
321	fd_enomem (void)	526	fd_enomem (EV_P)
322	{	527	{
323	int fd = anfdmax;	528	int fd;
324		529
325	while (fd--)	530	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	531	if (anfds [fd].events)
327	{	532	{
328	close (fd);
329	fd_kill (fd);	533	fd_kill (EV_A_ fd);
330	return;	534	return;
331	}	535	}
332	}	536	}
333		537
		538	/* usually called after fork if backend needs to re-arm all fds from scratch */
		539	static void
		540	fd_rearm_all (EV_P)
		541	{
		542	int fd;
		543
		544	/* this should be highly optimised to not do anything but set a flag */
		545	for (fd = 0; fd < anfdmax; ++fd)
		546	if (anfds [fd].events)
		547	{
		548	anfds [fd].events = 0;
		549	fd_change (EV_A_ fd);
		550	}
		551	}
		552
334	/*****************************************************************************/	553	/*****************************************************************************/
335		554
336	static struct ev_timer **timers;
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void	555	static void
343	upheap (WT *timers, int k)	556	upheap (WT *heap, int k)
344	{	557	{
345	WT w = timers [k];	558	WT w = heap [k];
346		559
347	while (k && timers [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
348	{	561	{
349	timers [k] = timers [k >> 1];	562	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
351	k >>= 1;	564	k >>= 1;
352	}	565	}
353		566
354	timers [k] = w;	567	heap [k] = w;
355	timers [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
356		569
357	}	570	}
358		571
359	static void	572	static void
360	downheap (WT *timers, int N, int k)	573	downheap (WT *heap, int N, int k)
361	{	574	{
362	WT w = timers [k];	575	WT w = heap [k];
363		576
364	while (k < (N >> 1))	577	while (k < (N >> 1))
365	{	578	{
366	int j = k << 1;	579	int j = k << 1;
367		580
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	582	++j;
370		583
371	if (w->at <= timers [j]->at)	584	if (w->at <= heap [j]->at)
372	break;	585	break;
373		586
374	timers [k] = timers [j];	587	heap [k] = heap [j];
375	timers [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
376	k = j;	589	k = j;
377	}	590	}
378		591
379	timers [k] = w;	592	heap [k] = w;
380	timers [k]->active = k + 1;	593	((W)heap [k])->active = k + 1;
		594	}
		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
381	}	601	}
382		602
383	/*****************************************************************************/	603	/*****************************************************************************/
384		604
385	typedef struct	605	typedef struct
386	{	606	{
387	struct ev_watcher_list *head;	607	WL head;
388	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
389	} ANSIG;	609	} ANSIG;
390		610
391	static ANSIG *signals;	611	static ANSIG *signals;
392	static int signalmax;	612	static int signalmax;
…		…
408	}	628	}
409		629
410	static void	630	static void
411	sighandler (int signum)	631	sighandler (int signum)
412	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
413	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
414		638
415	if (!gotsig)	639	if (!gotsig)
416	{	640	{
417	int old_errno = errno;	641	int old_errno = errno;
…		…
419	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
420	errno = old_errno;	644	errno = old_errno;
421	}	645	}
422	}	646	}
423		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 \|\| signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
424	static void	668	static void
425	sigcb (struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
426	{	670	{
427	struct ev_watcher_list *w;
428	int signum;	671	int signum;
429		672
430	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
431	gotsig = 0;	674	gotsig = 0;
432		675
433	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
434	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
435	{	678	ev_feed_signal_event (EV_A_ signum + 1);
436	signals [signum].gotsig = 0;
437
438	for (w = signals [signum].head; w; w = w->next)
439	event ((W)w, EV_SIGNAL);
440	}
441	}	679	}
442		680
443	static void	681	static void
444	siginit (void)	682	fd_intern (int fd)
445	{	683	{
446	#ifndef WIN32	684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	688	fcntl (fd, F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449
450	/* rather than sort out wether we really need nb, set it */
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	689	fcntl (fd, F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif	690	#endif
		691	}
		692
		693	static void
		694	siginit (EV_P)
		695	{
		696	fd_intern (sigpipe [0]);
		697	fd_intern (sigpipe [1]);
454		698
455	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);	700	ev_io_start (EV_A_ &sigev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
457	}	702	}
458		703
459	/*****************************************************************************/	704	/*****************************************************************************/
460		705
461	static struct ev_idle **idles;
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471
472	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
473	static struct ev_signal childev;	710	static struct ev_signal childev;
474
475	#ifndef WIN32
476		711
477	#ifndef WCONTINUED	712	#ifndef WCONTINUED
478	# define WCONTINUED 0	713	# define WCONTINUED 0
479	#endif	714	#endif
480		715
481	static void	716	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)	717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483	{	718	{
484	struct ev_child *w;	719	struct ev_child *w;
485		720
486	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	721	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
487	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
488	{	723	{
489	w->priority = sw->priority; /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
490	w->rpid = pid;	725	w->rpid = pid;
491	w->rstatus = status;	726	w->rstatus = status;
492	event ((W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
493	}	728	}
494	}	729	}
495		730
496	static void	731	static void
497	childcb (struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	733	{
499	int pid, status;	734	int pid, status;
500		735
501	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
502	{	737	{
503	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
504	event ((W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
505		741
506	child_reap (sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
508	}	744	}
509	}	745	}
510		746
511	#endif	747	#endif
512		748
513	/*****************************************************************************/	749	/*****************************************************************************/
514		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
515	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
516	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
517	#endif	756	#endif
518	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
519	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
537	return EV_VERSION_MINOR;	776	return EV_VERSION_MINOR;
538	}	777	}
539		778
540	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	780	static int
542	enable_secure ()	781	enable_secure (void)
543	{	782	{
544	#ifdef WIN32	783	#ifdef _WIN32
545	return 0;	784	return 0;
546	#else	785	#else
547	return getuid () != geteuid ()	786	return getuid () != geteuid ()
548	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
549	#endif	788	#endif
550	}	789	}
551		790
552	int ev_init (int methods)	791	unsigned int
		792	ev_supported_backends (void)
553	{	793	{
554	if (!ev_method)	794	unsigned int flags = 0;
		795
		796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
		807	{
		808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
555	{	841	{
556	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
557	{	843	{
558	struct timespec ts;	844	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	846	have_monotonic = 1;
561	}	847	}
562	#endif	848	#endif
563		849
564	ev_now = ev_time ();	850	ev_rt_now = ev_time ();
565	now = get_clock ();	851	mn_now = get_clock ();
566	now_floor = now;	852	now_floor = mn_now;
567	diff = ev_now - now;	853	rtmn_diff = ev_rt_now - mn_now;
568		854
569	if (pipe (sigpipe))	855	if (!(flags & EVFLAG_NOENV)
570	return 0;	856	&& !enable_secure ()
571		857	&& getenv ("LIBEV_FLAGS"))
572	if (methods == EVMETHOD_AUTO)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
575	else
576	methods = EVMETHOD_ANY;
577		859
578	ev_method = 0;	860	if (!(flags & 0x0000ffffUL))
		861	flags \|= ev_recommended_backends ();
		862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		866	#endif
579	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
581	#endif	869	#endif
582	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
584	#endif	872	#endif
585	#if EV_USE_POLL	873	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
587	#endif	875	#endif
588	#if EV_USE_SELECT	876	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
590	#endif	878	#endif
591		879
592	if (ev_method)	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
		886	loop_destroy (EV_P)
		887	{
		888	int i;
		889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		898	#endif
		899	#if EV_USE_POLL
		900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		901	#endif
		902	#if EV_USE_SELECT
		903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		904	#endif
		905
		906	for (i = NUMPRI; i--; )
		907	array_free (pending, [i]);
		908
		909	/* have to use the microsoft-never-gets-it-right macro */
		910	array_free (fdchange, EMPTY0);
		911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
		913	array_free (periodic, EMPTY0);
		914	#endif
		915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
		918
		919	backend = 0;
		920	}
		921
		922	static void
		923	loop_fork (EV_P)
		924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
		931	#if EV_USE_EPOLL
		932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		933	#endif
		934
		935	if (ev_is_active (&sigev))
		936	{
		937	/* default loop */
		938
		939	ev_ref (EV_A);
		940	ev_io_stop (EV_A_ &sigev);
		941	close (sigpipe [0]);
		942	close (sigpipe [1]);
		943
		944	while (pipe (sigpipe))
		945	syserr ("(libev) error creating pipe");
		946
		947	siginit (EV_A);
		948	}
		949
		950	postfork = 0;
		951	}
		952
		953	#if EV_MULTIPLICITY
		954	struct ev_loop *
		955	ev_loop_new (unsigned int flags)
		956	{
		957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
		961	loop_init (EV_A_ flags);
		962
		963	if (ev_backend (EV_A))
		964	return loop;
		965
		966	return 0;
		967	}
		968
		969	void
		970	ev_loop_destroy (EV_P)
		971	{
		972	loop_destroy (EV_A);
		973	ev_free (loop);
		974	}
		975
		976	void
		977	ev_loop_fork (EV_P)
		978	{
		979	postfork = 1;
		980	}
		981
		982	#endif
		983
		984	#if EV_MULTIPLICITY
		985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
		987	#else
		988	int
		989	ev_default_loop (unsigned int flags)
		990	#endif
		991	{
		992	if (sigpipe [0] == sigpipe [1])
		993	if (pipe (sigpipe))
		994	return 0;
		995
		996	if (!ev_default_loop_ptr)
		997	{
		998	#if EV_MULTIPLICITY
		999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1000	#else
		1001	ev_default_loop_ptr = 1;
		1002	#endif
		1003
		1004	loop_init (EV_A_ flags);
		1005
		1006	if (ev_backend (EV_A))
593	{	1007	{
594	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	1008	siginit (EV_A);
597		1009
598	#ifndef WIN32	1010	#ifndef _WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	1013	ev_signal_start (EV_A_ &childev);
		1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	1015	#endif
603	}	1016	}
		1017	else
		1018	ev_default_loop_ptr = 0;
604	}	1019	}
605		1020
606	return ev_method;	1021	return ev_default_loop_ptr;
		1022	}
		1023
		1024	void
		1025	ev_default_destroy (void)
		1026	{
		1027	#if EV_MULTIPLICITY
		1028	struct ev_loop *loop = ev_default_loop_ptr;
		1029	#endif
		1030
		1031	#ifndef _WIN32
		1032	ev_ref (EV_A); /* child watcher */
		1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
		1035
		1036	ev_ref (EV_A); /* signal watcher */
		1037	ev_io_stop (EV_A_ &sigev);
		1038
		1039	close (sigpipe [0]); sigpipe [0] = 0;
		1040	close (sigpipe [1]); sigpipe [1] = 0;
		1041
		1042	loop_destroy (EV_A);
		1043	}
		1044
		1045	void
		1046	ev_default_fork (void)
		1047	{
		1048	#if EV_MULTIPLICITY
		1049	struct ev_loop *loop = ev_default_loop_ptr;
		1050	#endif
		1051
		1052	if (backend)
		1053	postfork = 1;
607	}	1054	}
608		1055
609	/*****************************************************************************/	1056	/*****************************************************************************/
610		1057
611	void
612	ev_fork_prepare (void)
613	{
614	/* nop */
615	}
616
617	void
618	ev_fork_parent (void)
619	{
620	/* nop */
621	}
622
623	void
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif
630
631	ev_io_stop (&sigev);
632	close (sigpipe [0]);
633	close (sigpipe [1]);
634	pipe (sigpipe);
635	siginit ();
636	}
637
638	/*****************************************************************************/
639
640	static void	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
641	call_pending (void)	1071	call_pending (EV_P)
642	{	1072	{
643	int pri;	1073	int pri;
644		1074
645	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
647	{	1077	{
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		1079
650	if (p->w)	1080	if (expect_true (p->w))
651	{	1081	{
652	p->w->pending = 0;	1082	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
654	}	1084	}
655	}	1085	}
656	}	1086	}
657		1087
658	static void	1088	inline void
659	timers_reify (void)	1089	timers_reify (EV_P)
660	{	1090	{
661	while (timercnt && timers [0]->at <= now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	1092	{
663	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
		1094
		1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));
664		1096
665	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
666	if (w->repeat)	1098	if (w->repeat)
667	{	1099	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
669	w->at = now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
670	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
671	}	1107	}
672	else	1108	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1110
675	event ((W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
676	}	1112	}
677	}	1113	}
678		1114
679	static void	1115	#if EV_PERIODICS
		1116	inline void
680	periodics_reify (void)	1117	periodics_reify (EV_P)
681	{	1118	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
683	{	1120	{
684	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
685		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
686	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
687	if (w->interval)	1126	if (w->reschedule_cb)
688	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
692	}	1137	}
693	else	1138	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		1140
696	event ((W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
697	}	1142	}
698	}	1143	}
699		1144
700	static void	1145	static void
701	periodics_reschedule (ev_tstamp diff)	1146	periodics_reschedule (EV_P)
702	{	1147	{
703	int i;	1148	int i;
704		1149
705	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
707	{	1152	{
708	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
709		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
710	if (w->interval)	1157	else if (w->interval)
711	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
713
714	if (fabs (diff) >= 1e-4)
715	{
716	ev_periodic_stop (w);
717	ev_periodic_start (w);
718
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}
721	}
722	}	1159	}
723	}
724		1160
725	static int	1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
		1164	}
		1165	#endif
		1166
		1167	inline int
726	time_update_monotonic (void)	1168	time_update_monotonic (EV_P)
727	{	1169	{
728	now = get_clock ();	1170	mn_now = get_clock ();
729		1171
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	1173	{
732	ev_now = now + diff;	1174	ev_rt_now = rtmn_diff + mn_now;
733	return 0;	1175	return 0;
734	}	1176	}
735	else	1177	else
736	{	1178	{
737	now_floor = now;	1179	now_floor = mn_now;
738	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
739	return 1;	1181	return 1;
740	}	1182	}
741	}	1183	}
742		1184
743	static void	1185	inline void
744	time_update (void)	1186	time_update (EV_P)
745	{	1187	{
746	int i;	1188	int i;
747		1189
748	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	1191	if (expect_true (have_monotonic))
750	{	1192	{
751	if (time_update_monotonic ())	1193	if (time_update_monotonic (EV_A))
752	{	1194	{
753	ev_tstamp odiff = diff;	1195	ev_tstamp odiff = rtmn_diff;
754		1196
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
756	{	1198	{
757	diff = ev_now - now;	1199	rtmn_diff = ev_rt_now - mn_now;
758		1200
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	1202	return; /* all is well */
761		1203
762	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
763	now = get_clock ();	1205	mn_now = get_clock ();
764	now_floor = now;	1206	now_floor = mn_now;
765	}	1207	}
766		1208
		1209	# if EV_PERIODICS
767	periodics_reschedule (diff - odiff);	1210	periodics_reschedule (EV_A);
		1211	# endif
768	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
		1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	1214	}
770	}	1215	}
771	else	1216	else
772	#endif	1217	#endif
773	{	1218	{
774	ev_now = ev_time ();	1219	ev_rt_now = ev_time ();
775		1220
776	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	1222	{
		1223	#if EV_PERIODICS
778	periodics_reschedule (ev_now - now);	1224	periodics_reschedule (EV_A);
		1225	#endif
779		1226
780	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
781	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
783	}	1230	}
784		1231
785	now = ev_now;	1232	mn_now = ev_rt_now;
786	}	1233	}
787	}	1234	}
788		1235
789	int ev_loop_done;	1236	void
		1237	ev_ref (EV_P)
		1238	{
		1239	++activecnt;
		1240	}
790		1241
		1242	void
		1243	ev_unref (EV_P)
		1244	{
		1245	--activecnt;
		1246	}
		1247
		1248	static int loop_done;
		1249
		1250	void
791	void ev_loop (int flags)	1251	ev_loop (EV_P_ int flags)
792	{	1252	{
793	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
795		1256
796	do	1257	while (activecnt)
797	{	1258	{
798	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
800	{	1261	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	1263	call_pending (EV_A);
803	}	1264	}
804		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
805	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
806	fd_reify ();	1271	fd_reify (EV_A);
807		1272
808	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
809		1276
810	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
811	always have timers, we just calculate it always */	1278	block = 0.; /* do not block at all */
		1279	else
		1280	{
		1281	/* update time to cancel out callback processing overhead */
812	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
814	time_update_monotonic ();	1284	time_update_monotonic (EV_A);
815	else	1285	else
816	#endif	1286	#endif
817	{	1287	{
818	ev_now = ev_time ();	1288	ev_rt_now = ev_time ();
819	now = ev_now;	1289	mn_now = ev_rt_now;
820	}	1290	}
821		1291
822	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
823	block = 0.;
824	else
825	{
826	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
827		1293
828	if (timercnt)	1294	if (timercnt)
829	{	1295	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
831	if (block > to) block = to;	1297	if (block > to) block = to;
832	}	1298	}
833		1299
		1300	#if EV_PERIODICS
834	if (periodiccnt)	1301	if (periodiccnt)
835	{	1302	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
837	if (block > to) block = to;	1304	if (block > to) block = to;
838	}	1305	}
		1306	#endif
839		1307
840	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
841	}	1309	}
842		1310
843	method_poll (block);	1311	backend_poll (EV_A_ block);
		1312	}
844		1313
845	/* update ev_now, do magic */	1314	/* update ev_rt_now, do magic */
846	time_update ();	1315	time_update (EV_A);
847		1316
848	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
850	periodics_reify (); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
851		1322
852	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
853	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1326
856	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
857	if (checkcnt)	1328	if (expect_false (checkcnt))
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1330
860	call_pending ();	1331	call_pending (EV_A);
861	}
862	while (!ev_loop_done);
863		1332
864	if (ev_loop_done != 2)	1333	if (expect_false (loop_done))
		1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
		1339	}
		1340
		1341	void
		1342	ev_unloop (EV_P_ int how)
		1343	{
865	ev_loop_done = 0;	1344	loop_done = how;
866	}	1345	}
867		1346
868	/*****************************************************************************/	1347	/*****************************************************************************/
869		1348
870	static void	1349	inline void
871	wlist_add (WL *head, WL elem)	1350	wlist_add (WL *head, WL elem)
872	{	1351	{
873	elem->next = *head;	1352	elem->next = *head;
874	*head = elem;	1353	*head = elem;
875	}	1354	}
876		1355
877	static void	1356	inline void
878	wlist_del (WL *head, WL elem)	1357	wlist_del (WL *head, WL elem)
879	{	1358	{
880	while (*head)	1359	while (*head)
881	{	1360	{
882	if (*head == elem)	1361	if (*head == elem)
…		…
887		1366
888	head = &(*head)->next;	1367	head = &(*head)->next;
889	}	1368	}
890	}	1369	}
891		1370
892	static void	1371	inline void
893	ev_clear_pending (W w)	1372	ev_clear_pending (EV_P_ W w)
894	{	1373	{
895	if (w->pending)	1374	if (w->pending)
896	{	1375	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1376	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1377	w->pending = 0;
899	}	1378	}
900	}	1379	}
901		1380
902	static void	1381	inline void
903	ev_start (W w, int active)	1382	ev_start (EV_P_ W w, int active)
904	{	1383	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1384	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1385	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1386
908	w->active = active;	1387	w->active = active;
		1388	ev_ref (EV_A);
909	}	1389	}
910		1390
911	static void	1391	inline void
912	ev_stop (W w)	1392	ev_stop (EV_P_ W w)
913	{	1393	{
		1394	ev_unref (EV_A);
914	w->active = 0;	1395	w->active = 0;
915	}	1396	}
916		1397
917	/*****************************************************************************/	1398	/*****************************************************************************/
918		1399
919	void	1400	void
920	ev_io_start (struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
921	{	1402	{
922	int fd = w->fd;	1403	int fd = w->fd;
923		1404
924	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
925	return;	1406	return;
926		1407
927	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
928		1409
929	ev_start ((W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1413
933	fd_change (fd);	1414	fd_change (EV_A_ fd);
934	}	1415	}
935		1416
936	void	1417	void
937	ev_io_stop (struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
938	{	1419	{
939	ev_clear_pending ((W)w);	1420	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
941	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
942		1425
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1427	ev_stop (EV_A_ (W)w);
945		1428
946	fd_change (w->fd);	1429	fd_change (EV_A_ w->fd);
947	}	1430	}
948		1431
949	void	1432	void
950	ev_timer_start (struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
951	{	1434	{
952	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
953	return;	1436	return;
954		1437
955	w->at += now;	1438	((WT)w)->at += mn_now;
956		1439
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1441
959	ev_start ((W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
961	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
963	}
964		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1448	}
		1449
965	void	1450	void
966	ev_timer_stop (struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
967	{	1452	{
968	ev_clear_pending ((W)w);	1453	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
970	return;	1455	return;
971		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
972	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
973	{	1460	{
974	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976	}	1463	}
977		1464
978	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
979		1466
980	ev_stop ((W)w);	1467	ev_stop (EV_A_ (W)w);
981	}	1468	}
982		1469
983	void	1470	void
984	ev_timer_again (struct ev_timer *w)	1471	ev_timer_again (EV_P_ struct ev_timer *w)
985	{	1472	{
986	if (ev_is_active (w))	1473	if (ev_is_active (w))
987	{	1474	{
988	if (w->repeat)	1475	if (w->repeat)
989	{	1476	{
990	w->at = now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1479	}
993	else	1480	else
994	ev_timer_stop (w);	1481	ev_timer_stop (EV_A_ w);
995	}	1482	}
996	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
997	ev_timer_start (w);	1486	ev_timer_start (EV_A_ w);
		1487	}
998	}	1488	}
999		1489
		1490	#if EV_PERIODICS
1000	void	1491	void
1001	ev_periodic_start (struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1002	{	1493	{
1003	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1004	return;	1495	return;
1005		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1502	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
1011		1505
1012	ev_start ((W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1014	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1512	}
		1513
1018	void	1514	void
1019	ev_periodic_stop (struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020	{	1516	{
1021	ev_clear_pending ((W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1023	return;	1519	return;
1024		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
1025	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1026	{	1524	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029	}	1527	}
1030		1528
1031	ev_stop ((W)w);	1529	ev_stop (EV_A_ (W)w);
		1530	}
		1531
		1532	void
		1533	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1534	{
		1535	/* TODO: use adjustheap and recalculation */
		1536	ev_periodic_stop (EV_A_ w);
		1537	ev_periodic_start (EV_A_ w);
		1538	}
		1539	#endif
		1540
		1541	void
		1542	ev_idle_start (EV_P_ struct ev_idle *w)
		1543	{
		1544	if (expect_false (ev_is_active (w)))
		1545	return;
		1546
		1547	ev_start (EV_A_ (W)w, ++idlecnt);
		1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1549	idles [idlecnt - 1] = w;
		1550	}
		1551
		1552	void
		1553	ev_idle_stop (EV_P_ struct ev_idle *w)
		1554	{
		1555	ev_clear_pending (EV_A_ (W)w);
		1556	if (expect_false (!ev_is_active (w)))
		1557	return;
		1558
		1559	idles [((W)w)->active - 1] = idles [--idlecnt];
		1560	ev_stop (EV_A_ (W)w);
		1561	}
		1562
		1563	void
		1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1565	{
		1566	if (expect_false (ev_is_active (w)))
		1567	return;
		1568
		1569	ev_start (EV_A_ (W)w, ++preparecnt);
		1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1571	prepares [preparecnt - 1] = w;
		1572	}
		1573
		1574	void
		1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1576	{
		1577	ev_clear_pending (EV_A_ (W)w);
		1578	if (expect_false (!ev_is_active (w)))
		1579	return;
		1580
		1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1582	ev_stop (EV_A_ (W)w);
		1583	}
		1584
		1585	void
		1586	ev_check_start (EV_P_ struct ev_check *w)
		1587	{
		1588	if (expect_false (ev_is_active (w)))
		1589	return;
		1590
		1591	ev_start (EV_A_ (W)w, ++checkcnt);
		1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1593	checks [checkcnt - 1] = w;
		1594	}
		1595
		1596	void
		1597	ev_check_stop (EV_P_ struct ev_check *w)
		1598	{
		1599	ev_clear_pending (EV_A_ (W)w);
		1600	if (expect_false (!ev_is_active (w)))
		1601	return;
		1602
		1603	checks [((W)w)->active - 1] = checks [--checkcnt];
		1604	ev_stop (EV_A_ (W)w);
1032	}	1605	}
1033		1606
1034	#ifndef SA_RESTART	1607	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1608	# define SA_RESTART 0
1036	#endif	1609	#endif
1037		1610
1038	void	1611	void
1039	ev_signal_start (struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1040	{	1613	{
		1614	#if EV_MULTIPLICITY
		1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1616	#endif
1041	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1042	return;	1618	return;
1043		1619
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1621
1046	ev_start ((W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1625
1050	if (!w->next)	1626	if (!((WL)w)->next)
1051	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1052	struct sigaction sa;	1631	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1057	}	1637	}
1058	}	1638	}
1059		1639
1060	void	1640	void
1061	ev_signal_stop (struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1062	{	1642	{
1063	ev_clear_pending ((W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1065	return;	1645	return;
1066		1646
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1648	ev_stop (EV_A_ (W)w);
1069		1649
1070	if (!signals [w->signum - 1].head)	1650	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1651	signal (w->signum, SIG_DFL);
1072	}	1652	}
1073		1653
1074	void	1654	void
1075	ev_idle_start (struct ev_idle *w)
1076	{
1077	if (ev_is_active (w))
1078	return;
1079
1080	ev_start ((W)w, ++idlecnt);
1081	array_needsize (idles, idlemax, idlecnt, );
1082	idles [idlecnt - 1] = w;
1083	}
1084
1085	void
1086	ev_idle_stop (struct ev_idle *w)
1087	{
1088	ev_clear_pending ((W)w);
1089	if (ev_is_active (w))
1090	return;
1091
1092	idles [w->active - 1] = idles [--idlecnt];
1093	ev_stop ((W)w);
1094	}
1095
1096	void
1097	ev_prepare_start (struct ev_prepare *w)
1098	{
1099	if (ev_is_active (w))
1100	return;
1101
1102	ev_start ((W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );
1104	prepares [preparecnt - 1] = w;
1105	}
1106
1107	void
1108	ev_prepare_stop (struct ev_prepare *w)
1109	{
1110	ev_clear_pending ((W)w);
1111	if (ev_is_active (w))
1112	return;
1113
1114	prepares [w->active - 1] = prepares [--preparecnt];
1115	ev_stop ((W)w);
1116	}
1117
1118	void
1119	ev_check_start (struct ev_check *w)
1120	{
1121	if (ev_is_active (w))
1122	return;
1123
1124	ev_start ((W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );
1126	checks [checkcnt - 1] = w;
1127	}
1128
1129	void
1130	ev_check_stop (struct ev_check *w)
1131	{
1132	ev_clear_pending ((W)w);
1133	if (ev_is_active (w))
1134	return;
1135
1136	checks [w->active - 1] = checks [--checkcnt];
1137	ev_stop ((W)w);
1138	}
1139
1140	void
1141	ev_child_start (struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1142	{	1656	{
		1657	#if EV_MULTIPLICITY
		1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1659	#endif
1143	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1144	return;	1661	return;
1145		1662
1146	ev_start ((W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}	1665	}
1149		1666
1150	void	1667	void
1151	ev_child_stop (struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1152	{	1669	{
1153	ev_clear_pending ((W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1155	return;	1672	return;
1156		1673
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop ((W)w);	1675	ev_stop (EV_A_ (W)w);
1159	}	1676	}
		1677
		1678	#if EV_MULTIPLICITY
		1679	static void
		1680	embed_cb (EV_P_ struct ev_io *io, int revents)
		1681	{
		1682	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1683
		1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1685	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1686	}
		1687
		1688	void
		1689	ev_embed_start (EV_P_ struct ev_embed *w)
		1690	{
		1691	if (expect_false (ev_is_active (w)))
		1692	return;
		1693
		1694	{
		1695	struct ev_loop *loop = w->loop;
		1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1698	}
		1699
		1700	ev_io_start (EV_A_ &w->io);
		1701	ev_start (EV_A_ (W)w, 1);
		1702	}
		1703
		1704	void
		1705	ev_embed_stop (EV_P_ struct ev_embed *w)
		1706	{
		1707	ev_clear_pending (EV_A_ (W)w);
		1708	if (expect_false (!ev_is_active (w)))
		1709	return;
		1710
		1711	ev_io_stop (EV_A_ &w->io);
		1712	ev_stop (EV_A_ (W)w);
		1713	}
		1714	#endif
1160		1715
1161	/*****************************************************************************/	1716	/*****************************************************************************/
1162		1717
1163	struct ev_once	1718	struct ev_once
1164	{	1719	{
…		…
1167	void (cb)(int revents, void arg);	1722	void (cb)(int revents, void arg);
1168	void *arg;	1723	void *arg;
1169	};	1724	};
1170		1725
1171	static void	1726	static void
1172	once_cb (struct ev_once *once, int revents)	1727	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	1728	{
1174	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1175	void *arg = once->arg;	1730	void *arg = once->arg;
1176		1731
1177	ev_io_stop (&once->io);	1732	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	1734	ev_free (once);
1180		1735
1181	cb (revents, arg);	1736	cb (revents, arg);
1182	}	1737	}
1183		1738
1184	static void	1739	static void
1185	once_cb_io (struct ev_io *w, int revents)	1740	once_cb_io (EV_P_ struct ev_io *w, int revents)
1186	{	1741	{
1187	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1742	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1188	}	1743	}
1189		1744
1190	static void	1745	static void
1191	once_cb_to (struct ev_timer *w, int revents)	1746	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192	{	1747	{
1193	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1748	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1194	}	1749	}
1195		1750
1196	void	1751	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1752	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1198	{	1753	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1200		1755
1201	if (!once)	1756	if (expect_false (!once))
		1757	{
1202	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1203	else	1759	return;
1204	{	1760	}
		1761
1205	once->cb = cb;	1762	once->cb = cb;
1206	once->arg = arg;	1763	once->arg = arg;
1207		1764
1208	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1209	if (fd >= 0)	1766	if (fd >= 0)
1210	{	1767	{
1211	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	1769	ev_io_start (EV_A_ &once->io);
1213	}	1770	}
1214		1771
1215	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	1773	if (timeout >= 0.)
1217	{	1774	{
1218	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	1776	ev_timer_start (EV_A_ &once->to);
1220	}
1221	}
1222	}
1223
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{	1777	}
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}	1778	}
1301		1779
		1780	#ifdef __cplusplus
		1781	}
1302	#endif	1782	#endif
1303		1783
1304
1305
1306

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Comparing libev/ev.c (file contents): Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs. Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC