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

Comparing libev/ev.c (file contents):
Revision 1.39 by root, Thu Nov 1 17:17:32 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 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
		123	/**/
		124
51	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
52	# 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
		131	#endif
		132
		133	#ifndef EV_USE_SELECT
		134	# define EV_USE_SELECT 1
		135	#endif
		136
		137	#ifndef EV_USE_POLL
		138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
53	#endif	142	# endif
		143	#endif
		144
		145	#ifndef EV_USE_EPOLL
		146	# define EV_USE_EPOLL 0
		147	#endif
		148
		149	#ifndef EV_USE_KQUEUE
		150	# define EV_USE_KQUEUE 0
		151	#endif
		152
		153	#ifndef EV_USE_PORT
		154	# define EV_USE_PORT 0
		155	#endif
		156
		157	/**/
54		158
55	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	160	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	161	# define EV_USE_MONOTONIC 0
58	#endif	162	#endif
59		163
60	#ifndef EV_USE_SELECT
61	# define EV_USE_SELECT 1
62	#endif
63
64	#ifndef EV_USE_EPOLL
65	# define EV_USE_EPOLL 0
66	#endif
67
68	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
		165	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
70	#endif	167	#endif
71	#ifndef EV_USE_REALTIME	168
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
73	#endif	171	#endif
		172
		173	/**/
74		174
75	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
76	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
77	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
78	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
79		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
80	#include "ev.h"	183	# include "ev.h"
		184	#endif
		185
		186	#if __GNUC__ >= 3
		187	# define expect(expr,value) __builtin_expect ((expr),(value))
		188	# define inline static inline
		189	#else
		190	# define expect(expr,value) (expr)
		191	# define inline static
		192	#endif
		193
		194	#define expect_false(expr) expect ((expr) != 0, 0)
		195	#define expect_true(expr) expect ((expr) != 0, 1)
		196
		197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
81		202
82	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
85		206
86	static ev_tstamp now, diff; /* monotonic clock */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
		213	/*****************************************************************************/
		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
		263	typedef struct
		264	{
		265	WL head;
		266	unsigned char events;
		267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
		271	} ANFD;
		272
		273	typedef struct
		274	{
		275	W w;
		276	int events;
		277	} ANPENDING;
		278
		279	#if EV_MULTIPLICITY
		280
		281	struct ev_loop
		282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
		285	#define VAR(name,decl) decl;
		286	#include "ev_vars.h"
		287	#undef VAR
		288	};
		289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
		293
		294	#else
		295
87	ev_tstamp ev_now;	296	ev_tstamp ev_rt_now;
88	int ev_method;	297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
89		300
90	static int have_monotonic; /* runtime */	301	static int ev_default_loop_ptr;
91		302
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	303	#endif
93	static void (*method_modify)(int fd, int oev, int nev);
94	static void (*method_poll)(ev_tstamp timeout);
95		304
96	/*****************************************************************************/	305	/*****************************************************************************/
97		306
98	ev_tstamp	307	ev_tstamp
99	ev_time (void)	308	ev_time (void)
…		…
107	gettimeofday (&tv, 0);	316	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	317	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	318	#endif
110	}	319	}
111		320
112	static ev_tstamp	321	inline ev_tstamp
113	get_clock (void)	322	get_clock (void)
114	{	323	{
115	#if EV_USE_MONOTONIC	324	#if EV_USE_MONOTONIC
116	if (have_monotonic)	325	if (expect_true (have_monotonic))
117	{	326	{
118	struct timespec ts;	327	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	328	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	329	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	330	}
122	#endif	331	#endif
123		332
124	return ev_time ();	333	return ev_time ();
125	}	334	}
126		335
		336	#if EV_MULTIPLICITY
		337	ev_tstamp
		338	ev_now (EV_P)
		339	{
		340	return ev_rt_now;
		341	}
		342	#endif
		343
127	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
128		345
129	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
130	if ((cnt) > cur) \	347	if (expect_false ((cnt) > cur)) \
131	{ \	348	{ \
132	int newcnt = cur; \	349	int newcnt = cur; \
133	do \	350	do \
134	{ \	351	{ \
135	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
136	} \	353	} \
137	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
138	\	355	\
139	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
140	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
141	cur = newcnt; \	358	cur = newcnt; \
142	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
143		371
144	/*****************************************************************************/	372	/*****************************************************************************/
145
146	typedef struct
147	{
148	struct ev_io *head;
149	unsigned char events;
150	unsigned char reify;
151	} ANFD;
152
153	static ANFD *anfds;
154	static int anfdmax;
155		373
156	static void	374	static void
157	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
158	{	376	{
159	while (count--)	377	while (count--)
…		…
164		382
165	++base;	383	++base;
166	}	384	}
167	}	385	}
168		386
169	typedef struct	387	void
		388	ev_feed_event (EV_P_ void *w, int revents)
170	{	389	{
171	W w;	390	W w_ = (W)w;
172	int events;
173	} ANPENDING;
174		391
175	static ANPENDING *pendings;	392	if (expect_false (w_->pending))
176	static int pendingmax, pendingcnt;
177
178	static void
179	event (W w, int events)
180	{
181	if (w->pending)
182	{	393	{
183	pendings [w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
184	return;	395	return;
185	}	396	}
186		397
187	w->pending = ++pendingcnt;	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
188	array_needsize (pendings, pendingmax, pendingcnt, );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
189	pendings [pendingcnt - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
190	pendings [pendingcnt - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
191	}	402	}
192		403
193	static void	404	static void
194	queue_events (W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
195	{	406	{
196	int i;	407	int i;
197		408
198	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
200	}	411	}
201		412
202	static void	413	inline void
203	fd_event (int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
204	{	415	{
205	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	417	struct ev_io *w;
207		418
208	for (w = anfd->head; w; w = w->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
209	{	420	{
210	int ev = w->events & events;	421	int ev = w->events & revents;
211		422
212	if (ev)	423	if (ev)
213	event ((W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
214	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
215	}	432	}
216		433
217	/*****************************************************************************/	434	/*****************************************************************************/
218		435
219	static int *fdchanges;	436	inline void
220	static int fdchangemax, fdchangecnt;	437	fd_reify (EV_P)
221
222	static void
223	fd_reify (void)
224	{	438	{
225	int i;	439	int i;
226		440
227	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
228	{	442	{
…		…
230	ANFD *anfd = anfds + fd;	444	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	445	struct ev_io *w;
232		446
233	int events = 0;	447	int events = 0;
234		448
235	for (w = anfd->head; w; w = w->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
236	events \|= w->events;	450	events \|= w->events;
237		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
238	anfd->reify = 0;	461	anfd->reify = 0;
239		462
240	if (anfd->events != events)
241	{
242	method_modify (fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	464	anfd->events = events;
244	}
245	}	465	}
246		466
247	fdchangecnt = 0;	467	fdchangecnt = 0;
248	}	468	}
249		469
250	static void	470	static void
251	fd_change (int fd)	471	fd_change (EV_P_ int fd)
252	{	472	{
253	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
254	return;	474	return;
255		475
256	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
257		477
258	++fdchangecnt;	478	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
260	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
261	}	481	}
262		482
		483	static void
		484	fd_kill (EV_P_ int fd)
		485	{
		486	struct ev_io *w;
		487
		488	while ((w = (struct ev_io *)anfds [fd].head))
		489	{
		490	ev_io_stop (EV_A_ w);
		491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
		503	}
		504
263	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
264	static void	506	static void
265	fd_recheck (void)	507	fd_ebadf (EV_P)
266	{	508	{
267	int fd;	509	int fd;
268		510
269	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	512	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
272	while (anfds [fd].head)	514	fd_kill (EV_A_ fd);
		515	}
		516
		517	/* called on ENOMEM in select/poll to kill some fds and retry */
		518	static void
		519	fd_enomem (EV_P)
		520	{
		521	int fd;
		522
		523	for (fd = anfdmax; fd--; )
		524	if (anfds [fd].events)
273	{	525	{
274	ev_io_stop (anfds [fd].head);	526	fd_kill (EV_A_ fd);
275	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	527	return;
276	}	528	}
		529	}
		530
		531	/* usually called after fork if backend needs to re-arm all fds from scratch */
		532	static void
		533	fd_rearm_all (EV_P)
		534	{
		535	int fd;
		536
		537	/* this should be highly optimised to not do anything but set a flag */
		538	for (fd = 0; fd < anfdmax; ++fd)
		539	if (anfds [fd].events)
		540	{
		541	anfds [fd].events = 0;
		542	fd_change (EV_A_ fd);
		543	}
277	}	544	}
278		545
279	/*****************************************************************************/	546	/*****************************************************************************/
280		547
281	static struct ev_timer **timers;
282	static int timermax, timercnt;
283
284	static struct ev_periodic **periodics;
285	static int periodicmax, periodiccnt;
286
287	static void	548	static void
288	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
289	{	550	{
290	WT w = timers [k];	551	WT w = heap [k];
291		552
292	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
293	{	554	{
294	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
295	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
296	k >>= 1;	557	k >>= 1;
297	}	558	}
298		559
299	timers [k] = w;	560	heap [k] = w;
300	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
301		562
302	}	563	}
303		564
304	static void	565	static void
305	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
306	{	567	{
307	WT w = timers [k];	568	WT w = heap [k];
308		569
309	while (k < (N >> 1))	570	while (k < (N >> 1))
310	{	571	{
311	int j = k << 1;	572	int j = k << 1;
312		573
313	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
314	++j;	575	++j;
315		576
316	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
317	break;	578	break;
318		579
319	timers [k] = timers [j];	580	heap [k] = heap [j];
320	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
321	k = j;	582	k = j;
322	}	583	}
323		584
324	timers [k] = w;	585	heap [k] = w;
325	timers [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
326	}	594	}
327		595
328	/*****************************************************************************/	596	/*****************************************************************************/
329		597
330	typedef struct	598	typedef struct
331	{	599	{
332	struct ev_signal *head;	600	WL head;
333	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
334	} ANSIG;	602	} ANSIG;
335		603
336	static ANSIG *signals;	604	static ANSIG *signals;
337	static int signalmax;	605	static int signalmax;
…		…
353	}	621	}
354		622
355	static void	623	static void
356	sighandler (int signum)	624	sighandler (int signum)
357	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
358	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
359		631
360	if (!gotsig)	632	if (!gotsig)
361	{	633	{
		634	int old_errno = errno;
362	gotsig = 1;	635	gotsig = 1;
363	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
		637	errno = old_errno;
364	}	638	}
365	}	639	}
366		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
367	static void	661	static void
368	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
369	{	663	{
370	struct ev_signal *w;
371	int signum;	664	int signum;
372		665
373	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
374	gotsig = 0;	667	gotsig = 0;
375		668
376	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
377	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
378	{	671	ev_feed_signal_event (EV_A_ signum + 1);
379	signals [signum].gotsig = 0;
380
381	for (w = signals [signum].head; w; w = w->next)
382	event ((W)w, EV_SIGNAL);
383	}
384	}	672	}
385		673
386	static void	674	static void
387	siginit (void)	675	fd_intern (int fd)
388	{	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	fcntl (fd, F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391
392	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	683	#endif
		684	}
		685
		686	static void
		687	siginit (EV_P)
		688	{
		689	fd_intern (sigpipe [0]);
		690	fd_intern (sigpipe [1]);
395		691
396	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
398	}	695	}
399		696
400	/*****************************************************************************/	697	/*****************************************************************************/
401		698
402	static struct ev_idle **idles;
403	static int idlemax, idlecnt;
404
405	static struct ev_prepare **prepares;
406	static int preparemax, preparecnt;
407
408	static struct ev_check **checks;
409	static int checkmax, checkcnt;
410
411	/*****************************************************************************/
412
413	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
414	static struct ev_signal childev;	703	static struct ev_signal childev;
415		704
416	#ifndef WCONTINUED	705	#ifndef WCONTINUED
417	# define WCONTINUED 0	706	# define WCONTINUED 0
418	#endif	707	#endif
419		708
420	static void	709	static void
421	childcb (struct ev_signal *sw, int revents)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
422	{	711	{
423	struct ev_child *w;	712	struct ev_child *w;
		713
		714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		715	if (w->pid == pid \|\| !w->pid)
		716	{
		717	ev_priority (w) = ev_priority (sw); /* need to do it now */
		718	w->rpid = pid;
		719	w->rstatus = status;
		720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		721	}
		722	}
		723
		724	static void
		725	childcb (EV_P_ struct ev_signal *sw, int revents)
		726	{
424	int pid, status;	727	int pid, status;
425		728
426	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	730	{
428	if (w->pid == pid \|\| !w->pid)	731	/* make sure we are called again until all childs have been reaped */
429	{	732	/* we need to do it this way so that the callback gets called before we continue */
430	w->status = status;	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
431	event ((W)w, EV_CHILD);	734
432	}	735	child_reap (EV_A_ sw, pid, pid, status);
		736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
		737	}
433	}	738	}
		739
		740	#endif
434		741
435	/*****************************************************************************/	742	/*****************************************************************************/
436		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
		747	#if EV_USE_KQUEUE
		748	# include "ev_kqueue.c"
		749	#endif
437	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	751	# include "ev_epoll.c"
439	#endif	752	#endif
		753	#if EV_USE_POLL
		754	# include "ev_poll.c"
		755	#endif
440	#if EV_USE_SELECT	756	#if EV_USE_SELECT
441	# include "ev_select.c"	757	# include "ev_select.c"
442	#endif	758	#endif
443		759
444	int	760	int
…		…
451	ev_version_minor (void)	767	ev_version_minor (void)
452	{	768	{
453	return EV_VERSION_MINOR;	769	return EV_VERSION_MINOR;
454	}	770	}
455		771
456	int ev_init (int flags)	772	/* return true if we are running with elevated privileges and should ignore env variables */
		773	static int
		774	enable_secure (void)
457	{	775	{
458	if (!ev_method)	776	#ifdef _WIN32
		777	return 0;
		778	#else
		779	return getuid () != geteuid ()
		780	\|\| getgid () != getegid ();
		781	#endif
		782	}
		783
		784	unsigned int
		785	ev_supported_backends (void)
		786	{
		787	unsigned int flags = 0;
		788
		789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
		800	{
		801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
459	{	826	{
460	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
461	{	828	{
462	struct timespec ts;	829	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	831	have_monotonic = 1;
465	}	832	}
466	#endif	833	#endif
467		834
468	ev_now = ev_time ();	835	ev_rt_now = ev_time ();
469	now = get_clock ();	836	mn_now = get_clock ();
		837	now_floor = mn_now;
470	diff = ev_now - now;	838	rtmn_diff = ev_rt_now - mn_now;
471		839
472	if (pipe (sigpipe))	840	if (!(flags & EVFLAG_NOENV)
473	return 0;	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
		843	flags = atoi (getenv ("LIBEV_FLAGS"));
474		844
475	ev_method = EVMETHOD_NONE;	845	if (!(flags & 0x0000ffffUL))
		846	flags \|= ev_recommended_backends ();
		847
		848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		851	#endif
		852	#if EV_USE_KQUEUE
		853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		854	#endif
476	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		857	#endif
		858	#if EV_USE_POLL
		859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
478	#endif	860	#endif
479	#if EV_USE_SELECT	861	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
481	#endif	863	#endif
482		864
483	if (ev_method)	865	ev_init (&sigev, sigcb);
		866	ev_set_priority (&sigev, EV_MAXPRI);
		867	}
		868	}
		869
		870	static void
		871	loop_destroy (EV_P)
		872	{
		873	int i;
		874
		875	#if EV_USE_PORT
		876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		877	#endif
		878	#if EV_USE_KQUEUE
		879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		880	#endif
		881	#if EV_USE_EPOLL
		882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		883	#endif
		884	#if EV_USE_POLL
		885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		886	#endif
		887	#if EV_USE_SELECT
		888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		889	#endif
		890
		891	for (i = NUMPRI; i--; )
		892	array_free (pending, [i]);
		893
		894	/* have to use the microsoft-never-gets-it-right macro */
		895	array_free (fdchange, EMPTY0);
		896	array_free (timer, EMPTY0);
		897	#if EV_PERIODICS
		898	array_free (periodic, EMPTY0);
		899	#endif
		900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
		903
		904	backend = 0;
		905	}
		906
		907	static void
		908	loop_fork (EV_P)
		909	{
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
		916	#if EV_USE_EPOLL
		917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		918	#endif
		919
		920	if (ev_is_active (&sigev))
		921	{
		922	/* default loop */
		923
		924	ev_ref (EV_A);
		925	ev_io_stop (EV_A_ &sigev);
		926	close (sigpipe [0]);
		927	close (sigpipe [1]);
		928
		929	while (pipe (sigpipe))
		930	syserr ("(libev) error creating pipe");
		931
		932	siginit (EV_A);
		933	}
		934
		935	postfork = 0;
		936	}
		937
		938	#if EV_MULTIPLICITY
		939	struct ev_loop *
		940	ev_loop_new (unsigned int flags)
		941	{
		942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		943
		944	memset (loop, 0, sizeof (struct ev_loop));
		945
		946	loop_init (EV_A_ flags);
		947
		948	if (ev_backend (EV_A))
		949	return loop;
		950
		951	return 0;
		952	}
		953
		954	void
		955	ev_loop_destroy (EV_P)
		956	{
		957	loop_destroy (EV_A);
		958	ev_free (loop);
		959	}
		960
		961	void
		962	ev_loop_fork (EV_P)
		963	{
		964	postfork = 1;
		965	}
		966
		967	#endif
		968
		969	#if EV_MULTIPLICITY
		970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
		972	#else
		973	int
		974	ev_default_loop (unsigned int flags)
		975	#endif
		976	{
		977	if (sigpipe [0] == sigpipe [1])
		978	if (pipe (sigpipe))
		979	return 0;
		980
		981	if (!ev_default_loop_ptr)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		985	#else
		986	ev_default_loop_ptr = 1;
		987	#endif
		988
		989	loop_init (EV_A_ flags);
		990
		991	if (ev_backend (EV_A))
484	{	992	{
485	ev_watcher_init (&sigev, sigcb);
486	siginit ();	993	siginit (EV_A);
487		994
		995	#ifndef _WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
		997	ev_set_priority (&childev, EV_MAXPRI);
489	ev_signal_start (&childev);	998	ev_signal_start (EV_A_ &childev);
		999	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1000	#endif
490	}	1001	}
		1002	else
		1003	ev_default_loop_ptr = 0;
491	}	1004	}
492		1005
493	return ev_method;	1006	return ev_default_loop_ptr;
		1007	}
		1008
		1009	void
		1010	ev_default_destroy (void)
		1011	{
		1012	#if EV_MULTIPLICITY
		1013	struct ev_loop *loop = ev_default_loop_ptr;
		1014	#endif
		1015
		1016	#ifndef _WIN32
		1017	ev_ref (EV_A); /* child watcher */
		1018	ev_signal_stop (EV_A_ &childev);
		1019	#endif
		1020
		1021	ev_ref (EV_A); /* signal watcher */
		1022	ev_io_stop (EV_A_ &sigev);
		1023
		1024	close (sigpipe [0]); sigpipe [0] = 0;
		1025	close (sigpipe [1]); sigpipe [1] = 0;
		1026
		1027	loop_destroy (EV_A);
		1028	}
		1029
		1030	void
		1031	ev_default_fork (void)
		1032	{
		1033	#if EV_MULTIPLICITY
		1034	struct ev_loop *loop = ev_default_loop_ptr;
		1035	#endif
		1036
		1037	if (backend)
		1038	postfork = 1;
494	}	1039	}
495		1040
496	/*****************************************************************************/	1041	/*****************************************************************************/
497		1042
498	void
499	ev_fork_prepare (void)
500	{
501	/* nop */
502	}
503
504	void
505	ev_fork_parent (void)
506	{
507	/* nop */
508	}
509
510	void
511	ev_fork_child (void)
512	{
513	#if EV_USE_EPOLL
514	if (ev_method == EVMETHOD_EPOLL)
515	epoll_postfork_child ();
516	#endif
517
518	ev_io_stop (&sigev);
519	close (sigpipe [0]);
520	close (sigpipe [1]);
521	pipe (sigpipe);
522	siginit ();
523	}
524
525	/*****************************************************************************/
526
527	static void	1043	static int
		1044	any_pending (EV_P)
		1045	{
		1046	int pri;
		1047
		1048	for (pri = NUMPRI; pri--; )
		1049	if (pendingcnt [pri])
		1050	return 1;
		1051
		1052	return 0;
		1053	}
		1054
		1055	inline void
528	call_pending (void)	1056	call_pending (EV_P)
529	{	1057	{
		1058	int pri;
		1059
		1060	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	1061	while (pendingcnt [pri])
531	{	1062	{
532	ANPENDING *p = pendings + --pendingcnt;	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		1064
534	if (p->w)	1065	if (expect_true (p->w))
535	{	1066	{
536	p->w->pending = 0;	1067	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
538	}	1069	}
539	}	1070	}
540	}	1071	}
541		1072
542	static void	1073	inline void
543	timers_reify (void)	1074	timers_reify (EV_P)
544	{	1075	{
545	while (timercnt && timers [0]->at <= now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
546	{	1077	{
547	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
		1079
		1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));
548		1081
549	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
550	if (w->repeat)	1083	if (w->repeat)
551	{	1084	{
552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
553	w->at = now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
554	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
555	}	1092	}
556	else	1093	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1095
559	event ((W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
560	}	1097	}
561	}	1098	}
562		1099
563	static void	1100	#if EV_PERIODICS
		1101	inline void
564	periodics_reify (void)	1102	periodics_reify (EV_P)
565	{	1103	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
567	{	1105	{
568	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
569		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
570	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
571	if (w->interval)	1111	if (w->reschedule_cb)
572	{	1112	{
		1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1115	downheap ((WT *)periodics, periodiccnt, 0);
		1116	}
		1117	else if (w->interval)
		1118	{
573	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
575	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
576	}	1122	}
577	else	1123	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		1125
580	event ((W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
581	}	1127	}
582	}	1128	}
583		1129
584	static void	1130	static void
585	periodics_reschedule (ev_tstamp diff)	1131	periodics_reschedule (EV_P)
586	{	1132	{
587	int i;	1133	int i;
588		1134
589	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
591	{	1137	{
592	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
593		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
594	if (w->interval)	1142	else if (w->interval)
		1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1144	}
		1145
		1146	/* now rebuild the heap */
		1147	for (i = periodiccnt >> 1; i--; )
		1148	downheap ((WT *)periodics, periodiccnt, i);
		1149	}
		1150	#endif
		1151
		1152	inline int
		1153	time_update_monotonic (EV_P)
		1154	{
		1155	mn_now = get_clock ();
		1156
		1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1158	{
		1159	ev_rt_now = rtmn_diff + mn_now;
		1160	return 0;
		1161	}
		1162	else
		1163	{
		1164	now_floor = mn_now;
		1165	ev_rt_now = ev_time ();
		1166	return 1;
		1167	}
		1168	}
		1169
		1170	inline void
		1171	time_update (EV_P)
		1172	{
		1173	int i;
		1174
		1175	#if EV_USE_MONOTONIC
		1176	if (expect_true (have_monotonic))
		1177	{
		1178	if (time_update_monotonic (EV_A))
595	{	1179	{
596	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1180	ev_tstamp odiff = rtmn_diff;
597		1181
598	if (fabs (diff) >= 1e-4)	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
599	{	1183	{
600	ev_periodic_stop (w);	1184	rtmn_diff = ev_rt_now - mn_now;
601	ev_periodic_start (w);
602		1185
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1187	return; /* all is well */
		1188
		1189	ev_rt_now = ev_time ();
		1190	mn_now = get_clock ();
		1191	now_floor = mn_now;
604	}	1192	}
		1193
		1194	# if EV_PERIODICS
		1195	periodics_reschedule (EV_A);
		1196	# endif
		1197	/* no timer adjustment, as the monotonic clock doesn't jump */
		1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
605	}	1199	}
606	}	1200	}
607	}	1201	else
608		1202	#endif
609	static void	1203	{
610	time_update (void)
611	{
612	int i;
613
614	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
615		1205
616	if (have_monotonic)	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
617	{
618	ev_tstamp odiff = diff;
619
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
621	{	1207	{
622	now = get_clock ();	1208	#if EV_PERIODICS
623	diff = ev_now - now;
624
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)
626	return; /* all is well */
627
628	ev_now = ev_time ();
629	}
630
631	periodics_reschedule (diff - odiff);
632	/* no timer adjustment, as the monotonic clock doesn't jump */
633	}
634	else
635	{
636	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
637	{
638	periodics_reschedule (ev_now - now);	1209	periodics_reschedule (EV_A);
		1210	#endif
639		1211
640	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
641	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
643	}	1215	}
644		1216
645	now = ev_now;	1217	mn_now = ev_rt_now;
646	}	1218	}
647	}	1219	}
648		1220
649	int ev_loop_done;	1221	void
		1222	ev_ref (EV_P)
		1223	{
		1224	++activecnt;
		1225	}
650		1226
		1227	void
		1228	ev_unref (EV_P)
		1229	{
		1230	--activecnt;
		1231	}
		1232
		1233	static int loop_done;
		1234
		1235	void
651	void ev_loop (int flags)	1236	ev_loop (EV_P_ int flags)
652	{	1237	{
653	double block;	1238	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
655		1240
656	do	1241	while (activecnt)
657	{	1242	{
658	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
659	if (preparecnt)	1244	if (expect_false (preparecnt))
660	{	1245	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	1247	call_pending (EV_A);
663	}	1248	}
664		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
665	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
666	fd_reify ();	1255	fd_reify (EV_A);
667		1256
668	/* calculate blocking time */	1257	/* calculate blocking time */
669		1258
670	/* we only need this for !monotonic clockor timers, but as we basically	1259	/* we only need this for !monotonic clock or timers, but as we basically
671	always have timers, we just calculate it always */	1260	always have timers, we just calculate it always */
		1261	#if EV_USE_MONOTONIC
		1262	if (expect_true (have_monotonic))
		1263	time_update_monotonic (EV_A);
		1264	else
		1265	#endif
		1266	{
672	ev_now = ev_time ();	1267	ev_rt_now = ev_time ();
		1268	mn_now = ev_rt_now;
		1269	}
673		1270
674	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
675	block = 0.;	1272	block = 0.;
676	else	1273	else
677	{	1274	{
678	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
679		1276
680	if (timercnt)	1277	if (timercnt)
681	{	1278	{
682	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
683	if (block > to) block = to;	1280	if (block > to) block = to;
684	}	1281	}
685		1282
		1283	#if EV_PERIODICS
686	if (periodiccnt)	1284	if (periodiccnt)
687	{	1285	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
689	if (block > to) block = to;	1287	if (block > to) block = to;
690	}	1288	}
		1289	#endif
691		1290
692	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
693	}	1292	}
694		1293
695	method_poll (block);	1294	backend_poll (EV_A_ block);
696		1295
697	/* update ev_now, do magic */	1296	/* update ev_rt_now, do magic */
698	time_update ();	1297	time_update (EV_A);
699		1298
700	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
702	periodics_reify (); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
703		1304
704	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
705	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
707		1308
708	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
709	if (checkcnt)	1310	if (expect_false (checkcnt))
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		1312
712	call_pending ();	1313	call_pending (EV_A);
713	}
714	while (!ev_loop_done);
715		1314
		1315	if (expect_false (loop_done))
		1316	break;
		1317	}
		1318
716	if (ev_loop_done != 2)	1319	if (loop_done != 2)
717	ev_loop_done = 0;	1320	loop_done = 0;
		1321	}
		1322
		1323	void
		1324	ev_unloop (EV_P_ int how)
		1325	{
		1326	loop_done = how;
718	}	1327	}
719		1328
720	/*****************************************************************************/	1329	/*****************************************************************************/
721		1330
722	static void	1331	inline void
723	wlist_add (WL *head, WL elem)	1332	wlist_add (WL *head, WL elem)
724	{	1333	{
725	elem->next = *head;	1334	elem->next = *head;
726	*head = elem;	1335	*head = elem;
727	}	1336	}
728		1337
729	static void	1338	inline void
730	wlist_del (WL *head, WL elem)	1339	wlist_del (WL *head, WL elem)
731	{	1340	{
732	while (*head)	1341	while (*head)
733	{	1342	{
734	if (*head == elem)	1343	if (*head == elem)
…		…
739		1348
740	head = &(*head)->next;	1349	head = &(*head)->next;
741	}	1350	}
742	}	1351	}
743		1352
744	static void	1353	inline void
745	ev_clear_pending (W w)	1354	ev_clear_pending (EV_P_ W w)
746	{	1355	{
747	if (w->pending)	1356	if (w->pending)
748	{	1357	{
749	pendings [w->pending - 1].w = 0;	1358	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	1359	w->pending = 0;
751	}	1360	}
752	}	1361	}
753		1362
754	static void	1363	inline void
755	ev_start (W w, int active)	1364	ev_start (EV_P_ W w, int active)
756	{	1365	{
		1366	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1367	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1368
757	w->active = active;	1369	w->active = active;
		1370	ev_ref (EV_A);
758	}	1371	}
759		1372
760	static void	1373	inline void
761	ev_stop (W w)	1374	ev_stop (EV_P_ W w)
762	{	1375	{
		1376	ev_unref (EV_A);
763	w->active = 0;	1377	w->active = 0;
764	}	1378	}
765		1379
766	/*****************************************************************************/	1380	/*****************************************************************************/
767		1381
768	void	1382	void
769	ev_io_start (struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
770	{	1384	{
771	int fd = w->fd;	1385	int fd = w->fd;
772		1386
773	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
774	return;	1388	return;
775		1389
776	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
777		1391
778	ev_start ((W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		1395
782	fd_change (fd);	1396	fd_change (EV_A_ fd);
783	}	1397	}
784		1398
785	void	1399	void
786	ev_io_stop (struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
787	{	1401	{
788	ev_clear_pending ((W)w);	1402	ev_clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
790	return;	1404	return;
791		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1407
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	1409	ev_stop (EV_A_ (W)w);
794		1410
795	fd_change (w->fd);	1411	fd_change (EV_A_ w->fd);
796	}	1412	}
797		1413
798	void	1414	void
799	ev_timer_start (struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
800	{	1416	{
801	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
802	return;	1418	return;
803		1419
804	w->at += now;	1420	((WT)w)->at += mn_now;
805		1421
806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
807		1423
808	ev_start ((W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
810	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
812	}
813		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1430	}
		1431
814	void	1432	void
815	ev_timer_stop (struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
816	{	1434	{
817	ev_clear_pending ((W)w);	1435	ev_clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
819	return;	1437	return;
820		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
821	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
822	{	1442	{
823	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
824	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
825	}	1445	}
826		1446
827	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
828		1448
829	ev_stop ((W)w);	1449	ev_stop (EV_A_ (W)w);
830	}	1450	}
831		1451
832	void	1452	void
833	ev_timer_again (struct ev_timer *w)	1453	ev_timer_again (EV_P_ struct ev_timer *w)
834	{	1454	{
835	if (ev_is_active (w))	1455	if (ev_is_active (w))
836	{	1456	{
837	if (w->repeat)	1457	if (w->repeat)
838	{	1458	{
839	w->at = now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
841	}	1461	}
842	else	1462	else
843	ev_timer_stop (w);	1463	ev_timer_stop (EV_A_ w);
844	}	1464	}
845	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
846	ev_timer_start (w);	1468	ev_timer_start (EV_A_ w);
		1469	}
847	}	1470	}
848		1471
		1472	#if EV_PERIODICS
849	void	1473	void
850	ev_periodic_start (struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
851	{	1475	{
852	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
853	return;	1477	return;
854		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
856
857	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* this formula differs from the one in periodic_reify because we do not always round up */
858	if (w->interval)
859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1486	}
860		1487
861	ev_start ((W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
863	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
865	}
866		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1494	}
		1495
867	void	1496	void
868	ev_periodic_stop (struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
869	{	1498	{
870	ev_clear_pending ((W)w);	1499	ev_clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
872	return;	1501	return;
873		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
874	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
875	{	1506	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
878	}	1509	}
879		1510
880	ev_stop ((W)w);	1511	ev_stop (EV_A_ (W)w);
881	}	1512	}
882		1513
883	void	1514	void
		1515	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1516	{
		1517	/* TODO: use adjustheap and recalculation */
		1518	ev_periodic_stop (EV_A_ w);
		1519	ev_periodic_start (EV_A_ w);
		1520	}
		1521	#endif
		1522
		1523	void
884	ev_signal_start (struct ev_signal *w)	1524	ev_idle_start (EV_P_ struct ev_idle *w)
885	{	1525	{
886	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
887	return;	1527	return;
888		1528
		1529	ev_start (EV_A_ (W)w, ++idlecnt);
		1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1531	idles [idlecnt - 1] = w;
		1532	}
		1533
		1534	void
		1535	ev_idle_stop (EV_P_ struct ev_idle *w)
		1536	{
		1537	ev_clear_pending (EV_A_ (W)w);
		1538	if (expect_false (!ev_is_active (w)))
		1539	return;
		1540
		1541	idles [((W)w)->active - 1] = idles [--idlecnt];
		1542	ev_stop (EV_A_ (W)w);
		1543	}
		1544
		1545	void
		1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1547	{
		1548	if (expect_false (ev_is_active (w)))
		1549	return;
		1550
		1551	ev_start (EV_A_ (W)w, ++preparecnt);
		1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1553	prepares [preparecnt - 1] = w;
		1554	}
		1555
		1556	void
		1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1558	{
		1559	ev_clear_pending (EV_A_ (W)w);
		1560	if (expect_false (!ev_is_active (w)))
		1561	return;
		1562
		1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1564	ev_stop (EV_A_ (W)w);
		1565	}
		1566
		1567	void
		1568	ev_check_start (EV_P_ struct ev_check *w)
		1569	{
		1570	if (expect_false (ev_is_active (w)))
		1571	return;
		1572
		1573	ev_start (EV_A_ (W)w, ++checkcnt);
		1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1575	checks [checkcnt - 1] = w;
		1576	}
		1577
		1578	void
		1579	ev_check_stop (EV_P_ struct ev_check *w)
		1580	{
		1581	ev_clear_pending (EV_A_ (W)w);
		1582	if (expect_false (!ev_is_active (w)))
		1583	return;
		1584
		1585	checks [((W)w)->active - 1] = checks [--checkcnt];
		1586	ev_stop (EV_A_ (W)w);
		1587	}
		1588
		1589	#ifndef SA_RESTART
		1590	# define SA_RESTART 0
		1591	#endif
		1592
		1593	void
		1594	ev_signal_start (EV_P_ struct ev_signal *w)
		1595	{
		1596	#if EV_MULTIPLICITY
		1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1598	#endif
		1599	if (expect_false (ev_is_active (w)))
		1600	return;
		1601
889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
890		1603
891	ev_start ((W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
892	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1607
895	if (!w->next)	1608	if (!((WL)w)->next)
896	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
897	struct sigaction sa;	1613	struct sigaction sa;
898	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1616	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
902	}	1619	}
903	}	1620	}
904		1621
905	void	1622	void
906	ev_signal_stop (struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
907	{	1624	{
908	ev_clear_pending ((W)w);	1625	ev_clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
910	return;	1627	return;
911		1628
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1630	ev_stop (EV_A_ (W)w);
914		1631
915	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
917	}	1634	}
918		1635
919	void	1636	void
920	ev_idle_start (struct ev_idle *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
921	{	1638	{
		1639	#if EV_MULTIPLICITY
		1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1641	#endif
922	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
923	return;	1643	return;
924		1644
925	ev_start ((W)w, ++idlecnt);	1645	ev_start (EV_A_ (W)w, 1);
926	array_needsize (idles, idlemax, idlecnt, );	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
927	idles [idlecnt - 1] = w;
928	}	1647	}
929		1648
930	void	1649	void
931	ev_idle_stop (struct ev_idle *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
932	{	1651	{
933	ev_clear_pending ((W)w);	1652	ev_clear_pending (EV_A_ (W)w);
934	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
935	return;	1654	return;
936		1655
937	idles [w->active - 1] = idles [--idlecnt];
938	ev_stop ((W)w);
939	}
940
941	void
942	ev_prepare_start (struct ev_prepare *w)
943	{
944	if (ev_is_active (w))
945	return;
946
947	ev_start ((W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );
949	prepares [preparecnt - 1] = w;
950	}
951
952	void
953	ev_prepare_stop (struct ev_prepare *w)
954	{
955	ev_clear_pending ((W)w);
956	if (ev_is_active (w))
957	return;
958
959	prepares [w->active - 1] = prepares [--preparecnt];
960	ev_stop ((W)w);
961	}
962
963	void
964	ev_check_start (struct ev_check *w)
965	{
966	if (ev_is_active (w))
967	return;
968
969	ev_start ((W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );
971	checks [checkcnt - 1] = w;
972	}
973
974	void
975	ev_check_stop (struct ev_check *w)
976	{
977	ev_clear_pending ((W)w);
978	if (ev_is_active (w))
979	return;
980
981	checks [w->active - 1] = checks [--checkcnt];
982	ev_stop ((W)w);
983	}
984
985	void
986	ev_child_start (struct ev_child *w)
987	{
988	if (ev_is_active (w))
989	return;
990
991	ev_start ((W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}
994
995	void
996	ev_child_stop (struct ev_child *w)
997	{
998	ev_clear_pending ((W)w);
999	if (ev_is_active (w))
1000	return;
1001
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1003	ev_stop ((W)w);	1657	ev_stop (EV_A_ (W)w);
1004	}	1658	}
1005		1659
1006	/*****************************************************************************/	1660	/*****************************************************************************/
1007		1661
1008	struct ev_once	1662	struct ev_once
…		…
1012	void (cb)(int revents, void arg);	1666	void (cb)(int revents, void arg);
1013	void *arg;	1667	void *arg;
1014	};	1668	};
1015		1669
1016	static void	1670	static void
1017	once_cb (struct ev_once *once, int revents)	1671	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	1672	{
1019	void (cb)(int revents, void arg) = once->cb;	1673	void (cb)(int revents, void arg) = once->cb;
1020	void *arg = once->arg;	1674	void *arg = once->arg;
1021		1675
1022	ev_io_stop (&once->io);	1676	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	1678	ev_free (once);
1025		1679
1026	cb (revents, arg);	1680	cb (revents, arg);
1027	}	1681	}
1028		1682
1029	static void	1683	static void
1030	once_cb_io (struct ev_io *w, int revents)	1684	once_cb_io (EV_P_ struct ev_io *w, int revents)
1031	{	1685	{
1032	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1686	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1033	}	1687	}
1034		1688
1035	static void	1689	static void
1036	once_cb_to (struct ev_timer *w, int revents)	1690	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1037	{	1691	{
1038	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1692	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1039	}	1693	}
1040		1694
1041	void	1695	void
1042	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1043	{	1697	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1045		1699
1046	if (!once)	1700	if (expect_false (!once))
		1701	{
1047	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1048	else	1703	return;
1049	{	1704	}
		1705
1050	once->cb = cb;	1706	once->cb = cb;
1051	once->arg = arg;	1707	once->arg = arg;
1052		1708
1053	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1054	if (fd >= 0)	1710	if (fd >= 0)
1055	{	1711	{
1056	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	1713	ev_io_start (EV_A_ &once->io);
1058	}	1714	}
1059		1715
1060	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	1717	if (timeout >= 0.)
1062	{	1718	{
1063	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	1720	ev_timer_start (EV_A_ &once->to);
1065	}
1066	}
1067	}
1068
1069	/*****************************************************************************/
1070
1071	#if 0
1072
1073	struct ev_io wio;
1074
1075	static void
1076	sin_cb (struct ev_io *w, int revents)
1077	{
1078	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1079	}
1080
1081	static void
1082	ocb (struct ev_timer *w, int revents)
1083	{
1084	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1085	ev_timer_stop (w);
1086	ev_timer_start (w);
1087	}
1088
1089	static void
1090	scb (struct ev_signal *w, int revents)
1091	{
1092	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1093	ev_io_stop (&wio);
1094	ev_io_start (&wio);
1095	}
1096
1097	static void
1098	gcb (struct ev_signal *w, int revents)
1099	{
1100	fprintf (stderr, "generic %x\n", revents);
1101
1102	}
1103
1104	int main (void)
1105	{
1106	ev_init (0);
1107
1108	ev_io_init (&wio, sin_cb, 0, EV_READ);
1109	ev_io_start (&wio);
1110
1111	struct ev_timer t[10000];
1112
1113	#if 0
1114	int i;
1115	for (i = 0; i < 10000; ++i)
1116	{	1721	}
1117	struct ev_timer *w = t + i;
1118	ev_watcher_init (w, ocb, i);
1119	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1120	ev_timer_start (w);
1121	if (drand48 () < 0.5)
1122	ev_timer_stop (w);
1123	}
1124	#endif
1125
1126	struct ev_timer t1;
1127	ev_timer_init (&t1, ocb, 5, 10);
1128	ev_timer_start (&t1);
1129
1130	struct ev_signal sig;
1131	ev_signal_init (&sig, scb, SIGQUIT);
1132	ev_signal_start (&sig);
1133
1134	struct ev_check cw;
1135	ev_check_init (&cw, gcb);
1136	ev_check_start (&cw);
1137
1138	struct ev_idle iw;
1139	ev_idle_init (&iw, gcb);
1140	ev_idle_start (&iw);
1141
1142	ev_loop (0);
1143
1144	return 0;
1145	}	1722	}
1146		1723
		1724	#ifdef __cplusplus
		1725	}
1147	#endif	1726	#endif
1148		1727
1149
1150
1151

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.39 by root, Thu Nov 1 17:17:32 2007 UTC vs. Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.39 by root, Thu Nov 1 17:17:32 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC