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

Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 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	# ifdef CLOCK_MONOTONIC
53	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
54	# endif	127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
55	#endif	131	#endif
56		132
57	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
59	#endif	135	#endif
60		136
		137	#ifndef EV_USE_POLL
		138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
		143	#endif
		144
61	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
62	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
63	#endif	147	#endif
64		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	/**/
		158
		159	#ifndef CLOCK_MONOTONIC
		160	# undef EV_USE_MONOTONIC
		161	# define EV_USE_MONOTONIC 0
		162	#endif
		163
65	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
		165	# undef EV_USE_REALTIME
66	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
67	#endif	167	#endif
68	#ifndef EV_USE_REALTIME	168
69	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
70	#endif	171	#endif
		172
		173	/**/
71		174
72	#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) */
73	#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) */
74	#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 */
75	#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 */
76		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
77	#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 */
78		202
79	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
80	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
81	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
82		206
83	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
84	ev_tstamp ev_now;	296	ev_tstamp ev_rt_now;
85	int ev_method;	297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
86		300
87	static int have_monotonic; /* runtime */	301	static int ev_default_loop_ptr;
88		302
89	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	303	#endif
90	static void (*method_modify)(int fd, int oev, int nev);
91	static void (*method_poll)(ev_tstamp timeout);
92		304
93	/*****************************************************************************/	305	/*****************************************************************************/
94		306
95	ev_tstamp	307	ev_tstamp
96	ev_time (void)	308	ev_time (void)
…		…
104	gettimeofday (&tv, 0);	316	gettimeofday (&tv, 0);
105	return tv.tv_sec + tv.tv_usec * 1e-6;	317	return tv.tv_sec + tv.tv_usec * 1e-6;
106	#endif	318	#endif
107	}	319	}
108		320
109	static ev_tstamp	321	inline ev_tstamp
110	get_clock (void)	322	get_clock (void)
111	{	323	{
112	#if EV_USE_MONOTONIC	324	#if EV_USE_MONOTONIC
113	if (have_monotonic)	325	if (expect_true (have_monotonic))
114	{	326	{
115	struct timespec ts;	327	struct timespec ts;
116	clock_gettime (CLOCK_MONOTONIC, &ts);	328	clock_gettime (CLOCK_MONOTONIC, &ts);
117	return ts.tv_sec + ts.tv_nsec * 1e-9;	329	return ts.tv_sec + ts.tv_nsec * 1e-9;
118	}	330	}
119	#endif	331	#endif
120		332
121	return ev_time ();	333	return ev_time ();
122	}	334	}
123		335
		336	#if EV_MULTIPLICITY
		337	ev_tstamp
		338	ev_now (EV_P)
		339	{
		340	return ev_rt_now;
		341	}
		342	#endif
		343
124	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
125		345
126	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
127	if ((cnt) > cur) \	347	if (expect_false ((cnt) > cur)) \
128	{ \	348	{ \
129	int newcnt = cur; \	349	int newcnt = cur; \
130	do \	350	do \
131	{ \	351	{ \
132	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
133	} \	353	} \
134	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
135	\	355	\
136	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
137	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
138	cur = newcnt; \	358	cur = newcnt; \
139	}	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;
140		371
141	/*****************************************************************************/	372	/*****************************************************************************/
142
143	typedef struct
144	{
145	struct ev_io *head;
146	unsigned char events;
147	unsigned char reify;
148	} ANFD;
149
150	static ANFD *anfds;
151	static int anfdmax;
152		373
153	static void	374	static void
154	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
155	{	376	{
156	while (count--)	377	while (count--)
…		…
161		382
162	++base;	383	++base;
163	}	384	}
164	}	385	}
165		386
166	typedef struct	387	void
		388	ev_feed_event (EV_P_ void *w, int revents)
167	{	389	{
168	W w;	390	W w_ = (W)w;
169	int events;
170	} ANPENDING;
171		391
172	static ANPENDING *pendings;	392	if (expect_false (w_->pending))
173	static int pendingmax, pendingcnt;
174
175	static void
176	event (W w, int events)
177	{
178	if (w->pending)
179	{	393	{
180	pendings [w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
181	return;	395	return;
182	}	396	}
183		397
184	w->pending = ++pendingcnt;	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
185	array_needsize (pendings, pendingmax, pendingcnt, );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
186	pendings [pendingcnt - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
187	pendings [pendingcnt - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
188	}	402	}
189		403
190	static void	404	static void
191	queue_events (W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
192	{	406	{
193	int i;	407	int i;
194		408
195	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
196	event (events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
197	}	411	}
198		412
199	static void	413	inline void
200	fd_event (int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
201	{	415	{
202	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
203	struct ev_io *w;	417	struct ev_io *w;
204		418
205	for (w = anfd->head; w; w = w->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
206	{	420	{
207	int ev = w->events & events;	421	int ev = w->events & revents;
208		422
209	if (ev)	423	if (ev)
210	event ((W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
211	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
212	}	432	}
213		433
214	/*****************************************************************************/	434	/*****************************************************************************/
215		435
216	static int *fdchanges;	436	inline void
217	static int fdchangemax, fdchangecnt;	437	fd_reify (EV_P)
218
219	static void
220	fd_reify (void)
221	{	438	{
222	int i;	439	int i;
223		440
224	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
225	{	442	{
…		…
227	ANFD *anfd = anfds + fd;	444	ANFD *anfd = anfds + fd;
228	struct ev_io *w;	445	struct ev_io *w;
229		446
230	int events = 0;	447	int events = 0;
231		448
232	for (w = anfd->head; w; w = w->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
233	events \|= w->events;	450	events \|= w->events;
234		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
235	anfd->reify = 0;	461	anfd->reify = 0;
236		462
237	if (anfd->events != events)
238	{
239	method_modify (fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
240	anfd->events = events;	464	anfd->events = events;
241	}
242	}	465	}
243		466
244	fdchangecnt = 0;	467	fdchangecnt = 0;
245	}	468	}
246		469
247	static void	470	static void
248	fd_change (int fd)	471	fd_change (EV_P_ int fd)
249	{	472	{
250	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
251	return;	474	return;
252		475
253	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
254		477
255	++fdchangecnt;	478	++fdchangecnt;
256	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
257	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
258	}	481	}
259		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
260	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
261	static void	506	static void
262	fd_recheck (void)	507	fd_ebadf (EV_P)
263	{	508	{
264	int fd;	509	int fd;
265		510
266	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
267	if (anfds [fd].events)	512	if (anfds [fd].events)
268	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
269	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)
270	{	525	{
271	ev_io_stop (anfds [fd].head);	526	fd_kill (EV_A_ fd);
272	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	527	return;
273	}	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	}
274	}	544	}
275		545
276	/*****************************************************************************/	546	/*****************************************************************************/
277		547
278	static struct ev_timer **timers;
279	static int timermax, timercnt;
280
281	static struct ev_periodic **periodics;
282	static int periodicmax, periodiccnt;
283
284	static void	548	static void
285	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
286	{	550	{
287	WT w = timers [k];	551	WT w = heap [k];
288		552
289	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
290	{	554	{
291	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
292	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
293	k >>= 1;	557	k >>= 1;
294	}	558	}
295		559
296	timers [k] = w;	560	heap [k] = w;
297	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
298		562
299	}	563	}
300		564
301	static void	565	static void
302	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
303	{	567	{
304	WT w = timers [k];	568	WT w = heap [k];
305		569
306	while (k < (N >> 1))	570	while (k < (N >> 1))
307	{	571	{
308	int j = k << 1;	572	int j = k << 1;
309		573
310	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
311	++j;	575	++j;
312		576
313	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
314	break;	578	break;
315		579
316	timers [k] = timers [j];	580	heap [k] = heap [j];
317	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
318	k = j;	582	k = j;
319	}	583	}
320		584
321	timers [k] = w;	585	heap [k] = w;
322	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);
323	}	594	}
324		595
325	/*****************************************************************************/	596	/*****************************************************************************/
326		597
327	typedef struct	598	typedef struct
328	{	599	{
329	struct ev_signal *head;	600	WL head;
330	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
331	} ANSIG;	602	} ANSIG;
332		603
333	static ANSIG *signals;	604	static ANSIG *signals;
334	static int signalmax;	605	static int signalmax;
…		…
350	}	621	}
351		622
352	static void	623	static void
353	sighandler (int signum)	624	sighandler (int signum)
354	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
355	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
356		631
357	if (!gotsig)	632	if (!gotsig)
358	{	633	{
		634	int old_errno = errno;
359	gotsig = 1;	635	gotsig = 1;
360	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
		637	errno = old_errno;
361	}	638	}
362	}	639	}
363		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
364	static void	661	static void
365	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
366	{	663	{
367	struct ev_signal *w;
368	int sig;	664	int signum;
369		665
370	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
371	gotsig = 0;	667	gotsig = 0;
372		668
373	for (sig = signalmax; sig--; )	669	for (signum = signalmax; signum--; )
374	if (signals [sig].gotsig)	670	if (signals [signum].gotsig)
375	{	671	ev_feed_signal_event (EV_A_ signum + 1);
376	signals [sig].gotsig = 0;
377
378	for (w = signals [sig].head; w; w = w->next)
379	event ((W)w, EV_SIGNAL);
380	}
381	}	672	}
382		673
383	static void	674	static void
384	siginit (void)	675	fd_intern (int fd)
385	{	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
386	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	fcntl (fd, F_SETFD, FD_CLOEXEC);
387	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
388
389	/* rather than sort out wether we really need nb, set it */
390	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
391	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]);
392		691
393	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
394	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
395	}	695	}
396		696
397	/*****************************************************************************/	697	/*****************************************************************************/
398		698
399	static struct ev_idle **idles;
400	static int idlemax, idlecnt;
401
402	static struct ev_prepare **prepares;
403	static int preparemax, preparecnt;
404
405	static struct ev_check **checks;
406	static int checkmax, checkcnt;
407
408	/*****************************************************************************/
409
410	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
411	static struct ev_signal childev;	703	static struct ev_signal childev;
412		704
413	#ifndef WCONTINUED	705	#ifndef WCONTINUED
414	# define WCONTINUED 0	706	# define WCONTINUED 0
415	#endif	707	#endif
416		708
417	static void	709	static void
418	childcb (struct ev_signal *sw, int revents)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
419	{	711	{
420	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	{
421	int pid, status;	727	int pid, status;
422		728
423	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
424	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	730	{
425	if (w->pid == pid \|\| w->pid == -1)	731	/* make sure we are called again until all childs have been reaped */
426	{	732	/* we need to do it this way so that the callback gets called before we continue */
427	w->status = status;	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
428	event ((W)w, EV_CHILD);	734
429	}	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	}
430	}	738	}
		739
		740	#endif
431		741
432	/*****************************************************************************/	742	/*****************************************************************************/
433		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
434	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
435	# include "ev_epoll.c"	751	# include "ev_epoll.c"
436	#endif	752	#endif
		753	#if EV_USE_POLL
		754	# include "ev_poll.c"
		755	#endif
437	#if EV_USE_SELECT	756	#if EV_USE_SELECT
438	# include "ev_select.c"	757	# include "ev_select.c"
439	#endif	758	#endif
440		759
441	int	760	int
…		…
448	ev_version_minor (void)	767	ev_version_minor (void)
449	{	768	{
450	return EV_VERSION_MINOR;	769	return EV_VERSION_MINOR;
451	}	770	}
452		771
453	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)
454	{	775	{
455	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)
456	{	826	{
457	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
458	{	828	{
459	struct timespec ts;	829	struct timespec ts;
460	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
461	have_monotonic = 1;	831	have_monotonic = 1;
462	}	832	}
463	#endif	833	#endif
464		834
465	ev_now = ev_time ();	835	ev_rt_now = ev_time ();
466	now = get_clock ();	836	mn_now = get_clock ();
		837	now_floor = mn_now;
467	diff = ev_now - now;	838	rtmn_diff = ev_rt_now - mn_now;
468		839
469	if (pipe (sigpipe))	840	if (!(flags & EVFLAG_NOENV)
470	return 0;	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
		843	flags = atoi (getenv ("LIBEV_FLAGS"));
471		844
472	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
473	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
474	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);
475	#endif	860	#endif
476	#if EV_USE_SELECT	861	#if EV_USE_SELECT
477	if (ev_method == EVMETHOD_NONE) select_init (flags);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
478	#endif	863	#endif
479		864
480	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))
481	{	992	{
482	ev_watcher_init (&sigev, sigcb);
483	siginit ();	993	siginit (EV_A);
484		994
		995	#ifndef _WIN32
485	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
		997	ev_set_priority (&childev, EV_MAXPRI);
486	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
487	}	1001	}
		1002	else
		1003	ev_default_loop_ptr = 0;
488	}	1004	}
489		1005
490	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;
491	}	1039	}
492		1040
493	/*****************************************************************************/	1041	/*****************************************************************************/
494		1042
495	void
496	ev_fork_prepare (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_fork_parent (void)
503	{
504	/* nop */
505	}
506
507	void
508	ev_fork_child (void)
509	{
510	#if EV_USE_EPOLL
511	if (ev_method == EVMETHOD_EPOLL)
512	epoll_postfork_child ();
513	#endif
514
515	ev_io_stop (&sigev);
516	close (sigpipe [0]);
517	close (sigpipe [1]);
518	pipe (sigpipe);
519	siginit ();
520	}
521
522	/*****************************************************************************/
523
524	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
525	call_pending (void)	1056	call_pending (EV_P)
526	{	1057	{
		1058	int pri;
		1059
		1060	for (pri = NUMPRI; pri--; )
527	while (pendingcnt)	1061	while (pendingcnt [pri])
528	{	1062	{
529	ANPENDING *p = pendings + --pendingcnt;	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
530		1064
531	if (p->w)	1065	if (expect_true (p->w))
532	{	1066	{
533	p->w->pending = 0;	1067	p->w->pending = 0;
534	p->w->cb (p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
535	}	1069	}
536	}	1070	}
537	}	1071	}
538		1072
539	static void	1073	inline void
540	timers_reify (void)	1074	timers_reify (EV_P)
541	{	1075	{
542	while (timercnt && timers [0]->at <= now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
543	{	1077	{
544	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)));
545		1081
546	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
547	if (w->repeat)	1083	if (w->repeat)
548	{	1084	{
549	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
550	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
551	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
552	}	1092	}
553	else	1093	else
554	ev_timer_stop (w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
555		1095
556	event ((W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
557	}	1097	}
558	}	1098	}
559		1099
560	static void	1100	#if EV_PERIODICS
		1101	inline void
561	periodics_reify (void)	1102	periodics_reify (EV_P)
562	{	1103	{
563	while (periodiccnt && periodics [0]->at <= ev_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
564	{	1105	{
565	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
566		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
567	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
568	if (w->interval)	1111	if (w->reschedule_cb)
569	{	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	{
570	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;
571	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));
572	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
573	}	1122	}
574	else	1123	else
575	ev_periodic_stop (w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
576		1125
577	event ((W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
578	}	1127	}
579	}	1128	}
580		1129
581	static void	1130	static void
582	periodics_reschedule (ev_tstamp diff)	1131	periodics_reschedule (EV_P)
583	{	1132	{
584	int i;	1133	int i;
585		1134
586	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
587	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
588	{	1137	{
589	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
590		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
591	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))
592	{	1179	{
593	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1180	ev_tstamp odiff = rtmn_diff;
594		1181
595	if (fabs (diff) >= 1e-4)	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
596	{	1183	{
597	ev_periodic_stop (w);	1184	rtmn_diff = ev_rt_now - mn_now;
598	ev_periodic_start (w);
599		1185
600	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;
601	}	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) */
602	}	1199	}
603	}	1200	}
604	}	1201	else
605		1202	#endif
606	static void	1203	{
607	time_update (void)
608	{
609	int i;
610
611	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
612		1205
613	if (have_monotonic)	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
614	{
615	ev_tstamp odiff = diff;
616
617	for (i = 4; --i; ) /* loop a few times, before making important decisions */
618	{	1207	{
619	now = get_clock ();	1208	#if EV_PERIODICS
620	diff = ev_now - now;
621
622	if (fabs (odiff - diff) < MIN_TIMEJUMP)
623	return; /* all is well */
624
625	ev_now = ev_time ();
626	}
627
628	periodics_reschedule (diff - odiff);
629	/* no timer adjustment, as the monotonic clock doesn't jump */
630	}
631	else
632	{
633	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
634	{
635	periodics_reschedule (ev_now - now);	1209	periodics_reschedule (EV_A);
		1210	#endif
636		1211
637	/* 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 */
638	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
639	timers [i]->at += diff;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
640	}	1215	}
641		1216
642	now = ev_now;	1217	mn_now = ev_rt_now;
643	}	1218	}
644	}	1219	}
645		1220
646	int ev_loop_done;	1221	void
		1222	ev_ref (EV_P)
		1223	{
		1224	++activecnt;
		1225	}
647		1226
		1227	void
		1228	ev_unref (EV_P)
		1229	{
		1230	--activecnt;
		1231	}
		1232
		1233	static int loop_done;
		1234
		1235	void
648	void ev_loop (int flags)	1236	ev_loop (EV_P_ int flags)
649	{	1237	{
650	double block;	1238	double block;
651	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
652		1240
653	do	1241	while (activecnt)
654	{	1242	{
655	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
656	if (preparecnt)	1244	if (expect_false (preparecnt))
657	{	1245	{
658	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
659	call_pending ();	1247	call_pending (EV_A);
660	}	1248	}
661		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
662	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
663	fd_reify ();	1255	fd_reify (EV_A);
664		1256
665	/* calculate blocking time */	1257	/* calculate blocking time */
666		1258
667	/* 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
668	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	{
669	ev_now = ev_time ();	1267	ev_rt_now = ev_time ();
		1268	mn_now = ev_rt_now;
		1269	}
670		1270
671	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
672	block = 0.;	1272	block = 0.;
673	else	1273	else
674	{	1274	{
675	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
676		1276
677	if (timercnt)	1277	if (timercnt)
678	{	1278	{
679	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;
680	if (block > to) block = to;	1280	if (block > to) block = to;
681	}	1281	}
682		1282
		1283	#if EV_PERIODICS
683	if (periodiccnt)	1284	if (periodiccnt)
684	{	1285	{
685	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
686	if (block > to) block = to;	1287	if (block > to) block = to;
687	}	1288	}
		1289	#endif
688		1290
689	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
690	}	1292	}
691		1293
692	method_poll (block);	1294	backend_poll (EV_A_ block);
693		1295
694	/* update ev_now, do magic */	1296	/* update ev_rt_now, do magic */
695	time_update ();	1297	time_update (EV_A);
696		1298
697	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
698	timers_reify (); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
699	periodics_reify (); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
700		1304
701	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
702	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
703	queue_events ((W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
704		1308
705	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
706	if (checkcnt)	1310	if (expect_false (checkcnt))
707	queue_events ((W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
708		1312
709	call_pending ();	1313	call_pending (EV_A);
710	}
711	while (!ev_loop_done);
712		1314
		1315	if (expect_false (loop_done))
		1316	break;
		1317	}
		1318
713	if (ev_loop_done != 2)	1319	if (loop_done != 2)
714	ev_loop_done = 0;	1320	loop_done = 0;
		1321	}
		1322
		1323	void
		1324	ev_unloop (EV_P_ int how)
		1325	{
		1326	loop_done = how;
715	}	1327	}
716		1328
717	/*****************************************************************************/	1329	/*****************************************************************************/
718		1330
719	static void	1331	inline void
720	wlist_add (WL *head, WL elem)	1332	wlist_add (WL *head, WL elem)
721	{	1333	{
722	elem->next = *head;	1334	elem->next = *head;
723	*head = elem;	1335	*head = elem;
724	}	1336	}
725		1337
726	static void	1338	inline void
727	wlist_del (WL *head, WL elem)	1339	wlist_del (WL *head, WL elem)
728	{	1340	{
729	while (*head)	1341	while (*head)
730	{	1342	{
731	if (*head == elem)	1343	if (*head == elem)
…		…
736		1348
737	head = &(*head)->next;	1349	head = &(*head)->next;
738	}	1350	}
739	}	1351	}
740		1352
741	static void	1353	inline void
742	ev_clear_pending (W w)	1354	ev_clear_pending (EV_P_ W w)
743	{	1355	{
744	if (w->pending)	1356	if (w->pending)
745	{	1357	{
746	pendings [w->pending - 1].w = 0;	1358	pendings [ABSPRI (w)][w->pending - 1].w = 0;
747	w->pending = 0;	1359	w->pending = 0;
748	}	1360	}
749	}	1361	}
750		1362
751	static void	1363	inline void
752	ev_start (W w, int active)	1364	ev_start (EV_P_ W w, int active)
753	{	1365	{
		1366	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1367	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1368
754	w->active = active;	1369	w->active = active;
		1370	ev_ref (EV_A);
755	}	1371	}
756		1372
757	static void	1373	inline void
758	ev_stop (W w)	1374	ev_stop (EV_P_ W w)
759	{	1375	{
		1376	ev_unref (EV_A);
760	w->active = 0;	1377	w->active = 0;
761	}	1378	}
762		1379
763	/*****************************************************************************/	1380	/*****************************************************************************/
764		1381
765	void	1382	void
766	ev_io_start (struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
767	{	1384	{
		1385	int fd = w->fd;
		1386
768	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
769	return;	1388	return;
770		1389
771	int fd = w->fd;
772
773	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
774		1391
775	ev_start ((W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
776	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
777	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
778		1395
779	fd_change (fd);	1396	fd_change (EV_A_ fd);
780	}	1397	}
781		1398
782	void	1399	void
783	ev_io_stop (struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
784	{	1401	{
785	ev_clear_pending ((W)w);	1402	ev_clear_pending (EV_A_ (W)w);
786	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
787	return;	1404	return;
788		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1407
789	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
790	ev_stop ((W)w);	1409	ev_stop (EV_A_ (W)w);
791		1410
792	fd_change (w->fd);	1411	fd_change (EV_A_ w->fd);
793	}	1412	}
794		1413
795	void	1414	void
796	ev_timer_start (struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
797	{	1416	{
798	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
799	return;	1418	return;
800		1419
801	w->at += now;	1420	((WT)w)->at += mn_now;
802		1421
803	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.));
804		1423
805	ev_start ((W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
806	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
807	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
808	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
809	}
810		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1430	}
		1431
811	void	1432	void
812	ev_timer_stop (struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
813	{	1434	{
814	ev_clear_pending ((W)w);	1435	ev_clear_pending (EV_A_ (W)w);
815	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
816	return;	1437	return;
817		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
818	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
819	{	1442	{
820	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
821	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
822	}	1445	}
823		1446
824	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
825		1448
826	ev_stop ((W)w);	1449	ev_stop (EV_A_ (W)w);
827	}	1450	}
828		1451
829	void	1452	void
830	ev_timer_again (struct ev_timer *w)	1453	ev_timer_again (EV_P_ struct ev_timer *w)
831	{	1454	{
832	if (ev_is_active (w))	1455	if (ev_is_active (w))
833	{	1456	{
834	if (w->repeat)	1457	if (w->repeat)
835	{	1458	{
836	w->at = now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
837	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
838	}	1461	}
839	else	1462	else
840	ev_timer_stop (w);	1463	ev_timer_stop (EV_A_ w);
841	}	1464	}
842	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
843	ev_timer_start (w);	1468	ev_timer_start (EV_A_ w);
		1469	}
844	}	1470	}
845		1471
		1472	#if EV_PERIODICS
846	void	1473	void
847	ev_periodic_start (struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
848	{	1475	{
849	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
850	return;	1477	return;
851		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
852	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.));
853
854	/* 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 */
855	if (w->interval)
856	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	}
857		1487
858	ev_start ((W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
859	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
860	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
861	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
862	}
863		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1494	}
		1495
864	void	1496	void
865	ev_periodic_stop (struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
866	{	1498	{
867	ev_clear_pending ((W)w);	1499	ev_clear_pending (EV_A_ (W)w);
868	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
869	return;	1501	return;
870		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
871	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
872	{	1506	{
873	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
874	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
875	}	1509	}
876		1510
877	ev_stop ((W)w);	1511	ev_stop (EV_A_ (W)w);
878	}	1512	}
879		1513
880	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
881	ev_signal_start (struct ev_signal *w)	1524	ev_idle_start (EV_P_ struct ev_idle *w)
882	{	1525	{
883	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
884	return;	1527	return;
885		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
886	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));
887		1603
888	ev_start ((W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
889	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
890	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
891		1607
892	if (!w->next)	1608	if (!((WL)w)->next)
893	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
894	struct sigaction sa;	1613	struct sigaction sa;
895	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
896	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
897	sa.sa_flags = 0;	1616	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
898	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
899	}	1619	}
900	}	1620	}
901		1621
902	void	1622	void
903	ev_signal_stop (struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
904	{	1624	{
905	ev_clear_pending ((W)w);	1625	ev_clear_pending (EV_A_ (W)w);
906	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
907	return;	1627	return;
908		1628
909	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
910	ev_stop ((W)w);	1630	ev_stop (EV_A_ (W)w);
911		1631
912	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
913	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
914	}	1634	}
915		1635
916	void	1636	void
917	ev_idle_start (struct ev_idle *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
918	{	1638	{
		1639	#if EV_MULTIPLICITY
		1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1641	#endif
919	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
920	return;	1643	return;
921		1644
922	ev_start ((W)w, ++idlecnt);	1645	ev_start (EV_A_ (W)w, 1);
923	array_needsize (idles, idlemax, idlecnt, );	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
924	idles [idlecnt - 1] = w;
925	}	1647	}
926		1648
927	void	1649	void
928	ev_idle_stop (struct ev_idle *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
929	{	1651	{
930	ev_clear_pending ((W)w);	1652	ev_clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
932	return;	1654	return;
933		1655
934	idles [w->active - 1] = idles [--idlecnt];
935	ev_stop ((W)w);
936	}
937
938	void
939	ev_prepare_start (struct ev_prepare *w)
940	{
941	if (ev_is_active (w))
942	return;
943
944	ev_start ((W)w, ++preparecnt);
945	array_needsize (prepares, preparemax, preparecnt, );
946	prepares [preparecnt - 1] = w;
947	}
948
949	void
950	ev_prepare_stop (struct ev_prepare *w)
951	{
952	ev_clear_pending ((W)w);
953	if (ev_is_active (w))
954	return;
955
956	prepares [w->active - 1] = prepares [--preparecnt];
957	ev_stop ((W)w);
958	}
959
960	void
961	ev_check_start (struct ev_check *w)
962	{
963	if (ev_is_active (w))
964	return;
965
966	ev_start ((W)w, ++checkcnt);
967	array_needsize (checks, checkmax, checkcnt, );
968	checks [checkcnt - 1] = w;
969	}
970
971	void
972	ev_check_stop (struct ev_check *w)
973	{
974	ev_clear_pending ((W)w);
975	if (ev_is_active (w))
976	return;
977
978	checks [w->active - 1] = checks [--checkcnt];
979	ev_stop ((W)w);
980	}
981
982	void
983	ev_child_start (struct ev_child *w)
984	{
985	if (ev_is_active (w))
986	return;
987
988	ev_start ((W)w, 1);
989	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	}
991
992	void
993	ev_child_stop (struct ev_child *w)
994	{
995	ev_clear_pending ((W)w);
996	if (ev_is_active (w))
997	return;
998
999	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1000	ev_stop ((W)w);	1657	ev_stop (EV_A_ (W)w);
1001	}	1658	}
1002		1659
1003	/*****************************************************************************/	1660	/*****************************************************************************/
1004		1661
1005	struct ev_once	1662	struct ev_once
…		…
1009	void (cb)(int revents, void arg);	1666	void (cb)(int revents, void arg);
1010	void *arg;	1667	void *arg;
1011	};	1668	};
1012		1669
1013	static void	1670	static void
1014	once_cb (struct ev_once *once, int revents)	1671	once_cb (EV_P_ struct ev_once *once, int revents)
1015	{	1672	{
1016	void (cb)(int revents, void arg) = once->cb;	1673	void (cb)(int revents, void arg) = once->cb;
1017	void *arg = once->arg;	1674	void *arg = once->arg;
1018		1675
1019	ev_io_stop (&once->io);	1676	ev_io_stop (EV_A_ &once->io);
1020	ev_timer_stop (&once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1021	free (once);	1678	ev_free (once);
1022		1679
1023	cb (revents, arg);	1680	cb (revents, arg);
1024	}	1681	}
1025		1682
1026	static void	1683	static void
1027	once_cb_io (struct ev_io *w, int revents)	1684	once_cb_io (EV_P_ struct ev_io *w, int revents)
1028	{	1685	{
1029	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);
1030	}	1687	}
1031		1688
1032	static void	1689	static void
1033	once_cb_to (struct ev_timer *w, int revents)	1690	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1034	{	1691	{
1035	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);
1036	}	1693	}
1037		1694
1038	void	1695	void
1039	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)
1040	{	1697	{
1041	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1042		1699
1043	if (!once)	1700	if (expect_false (!once))
		1701	{
1044	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1045	else	1703	return;
1046	{	1704	}
		1705
1047	once->cb = cb;	1706	once->cb = cb;
1048	once->arg = arg;	1707	once->arg = arg;
1049		1708
1050	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1051	if (fd >= 0)	1710	if (fd >= 0)
1052	{	1711	{
1053	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1054	ev_io_start (&once->io);	1713	ev_io_start (EV_A_ &once->io);
1055	}	1714	}
1056		1715
1057	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1058	if (timeout >= 0.)	1717	if (timeout >= 0.)
1059	{	1718	{
1060	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1061	ev_timer_start (&once->to);	1720	ev_timer_start (EV_A_ &once->to);
1062	}
1063	}
1064	}
1065
1066	/*****************************************************************************/
1067
1068	#if 0
1069
1070	struct ev_io wio;
1071
1072	static void
1073	sin_cb (struct ev_io *w, int revents)
1074	{
1075	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1076	}
1077
1078	static void
1079	ocb (struct ev_timer *w, int revents)
1080	{
1081	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1082	ev_timer_stop (w);
1083	ev_timer_start (w);
1084	}
1085
1086	static void
1087	scb (struct ev_signal *w, int revents)
1088	{
1089	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1090	ev_io_stop (&wio);
1091	ev_io_start (&wio);
1092	}
1093
1094	static void
1095	gcb (struct ev_signal *w, int revents)
1096	{
1097	fprintf (stderr, "generic %x\n", revents);
1098
1099	}
1100
1101	int main (void)
1102	{
1103	ev_init (0);
1104
1105	ev_io_init (&wio, sin_cb, 0, EV_READ);
1106	ev_io_start (&wio);
1107
1108	struct ev_timer t[10000];
1109
1110	#if 0
1111	int i;
1112	for (i = 0; i < 10000; ++i)
1113	{	1721	}
1114	struct ev_timer *w = t + i;
1115	ev_watcher_init (w, ocb, i);
1116	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1117	ev_timer_start (w);
1118	if (drand48 () < 0.5)
1119	ev_timer_stop (w);
1120	}
1121	#endif
1122
1123	struct ev_timer t1;
1124	ev_timer_init (&t1, ocb, 5, 10);
1125	ev_timer_start (&t1);
1126
1127	struct ev_signal sig;
1128	ev_signal_init (&sig, scb, SIGQUIT);
1129	ev_signal_start (&sig);
1130
1131	struct ev_check cw;
1132	ev_check_init (&cw, gcb);
1133	ev_check_start (&cw);
1134
1135	struct ev_idle iw;
1136	ev_idle_init (&iw, gcb);
1137	ev_idle_start (&iw);
1138
1139	ev_loop (0);
1140
1141	return 0;
1142	}	1722	}
1143		1723
		1724	#ifdef __cplusplus
		1725	}
1144	#endif	1726	#endif
1145		1727
1146
1147
1148

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Comparing libev/ev.c (file contents): Revision 1.36 by root, Thu Nov 1 13:11:11 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 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC