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

Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	76	#include <time.h>
		77
		78	#include <signal.h>
		79
		80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
		89	# endif
		90	#endif
50		91
51	/**/	92	/**/
52		93
53	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
55	#endif	96	#endif
56		97
57	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
		101	#endif
		102
		103	#ifndef EV_USE_POLL
		104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
59	#endif	109	#endif
60		110
61	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
62	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
63	#endif	113	#endif
64		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
65	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
66	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
67	#endif	121	#endif
68		122
69	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
70		130
71	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
72	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
73	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
74	#endif	134	#endif
75		135
76	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
77	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
78	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
79	#endif	143	#endif
80		144
81	/**/	145	/**/
82		146
83	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
84	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
85	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
86	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
87		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
88	#include "ev.h"	155	# include "ev.h"
		156	#endif
89		157
90	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
91	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
92	# define inline inline	160	# define inline inline
93	#else	161	#else
…		…
96	#endif	164	#endif
97		165
98	#define expect_false(expr) expect ((expr) != 0, 0)	166	#define expect_false(expr) expect ((expr) != 0, 0)
99	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
100		168
		169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
101	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
102	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
103	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
104		178
105	static ev_tstamp now_floor, now, diff; /* monotonic clock */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
		185	/*****************************************************************************/
		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
		235	typedef struct
		236	{
		237	WL head;
		238	unsigned char events;
		239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
		243	} ANFD;
		244
		245	typedef struct
		246	{
		247	W w;
		248	int events;
		249	} ANPENDING;
		250
		251	#if EV_MULTIPLICITY
		252
		253	struct ev_loop
		254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
		257	#define VAR(name,decl) decl;
		258	#include "ev_vars.h"
		259	#undef VAR
		260	};
		261	#include "ev_wrap.h"
		262
		263	struct ev_loop default_loop_struct;
		264	static struct ev_loop *default_loop;
		265
		266	#else
		267
106	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
107	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
108		272
109	static int have_monotonic; /* runtime */	273	static int default_loop;
110		274
111	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
112	static void (*method_modify)(int fd, int oev, int nev);
113	static void (*method_poll)(ev_tstamp timeout);
114		276
115	/*****************************************************************************/	277	/*****************************************************************************/
116		278
117	ev_tstamp	279	ev_tstamp
118	ev_time (void)	280	ev_time (void)
…		…
126	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
127	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
128	#endif	290	#endif
129	}	291	}
130		292
131	static ev_tstamp	293	inline ev_tstamp
132	get_clock (void)	294	get_clock (void)
133	{	295	{
134	#if EV_USE_MONOTONIC	296	#if EV_USE_MONOTONIC
135	if (expect_true (have_monotonic))	297	if (expect_true (have_monotonic))
136	{	298	{
…		…
141	#endif	303	#endif
142		304
143	return ev_time ();	305	return ev_time ();
144	}	306	}
145		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
146	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
147		317
148	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
149	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
150	{ \	320	{ \
151	int newcnt = cur; \	321	int newcnt = cur; \
152	do \	322	do \
153	{ \	323	{ \
154	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
155	} \	325	} \
156	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
157	\	327	\
158	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
159	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
160	cur = newcnt; \	330	cur = newcnt; \
161	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
162		343
163	/*****************************************************************************/	344	/*****************************************************************************/
164
165	typedef struct
166	{
167	struct ev_io *head;
168	unsigned char events;
169	unsigned char reify;
170	} ANFD;
171
172	static ANFD *anfds;
173	static int anfdmax;
174		345
175	static void	346	static void
176	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
177	{	348	{
178	while (count--)	349	while (count--)
…		…
183		354
184	++base;	355	++base;
185	}	356	}
186	}	357	}
187		358
188	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
189	{	361	{
190	W w;	362	W w_ = (W)w;
191	int events;
192	} ANPENDING;
193		363
194	static ANPENDING *pendings;
195	static int pendingmax, pendingcnt;
196
197	static void
198	event (W w, int events)
199	{
200	if (w->pending)	364	if (w_->pending)
201	{	365	{
202	pendings [w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
203	return;	367	return;
204	}	368	}
205		369
206	w->pending = ++pendingcnt;	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
207	array_needsize (pendings, pendingmax, pendingcnt, );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
208	pendings [pendingcnt - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
209	pendings [pendingcnt - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
210	}	374	}
211		375
212	static void	376	static void
213	queue_events (W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
214	{	378	{
215	int i;	379	int i;
216		380
217	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
218	event (events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
219	}	383	}
220		384
221	static void	385	inline void
222	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
223	{	387	{
224	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
225	struct ev_io *w;	389	struct ev_io *w;
226		390
227	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	{	392	{
229	int ev = w->events & events;	393	int ev = w->events & revents;
230		394
231	if (ev)	395	if (ev)
232	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
233	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
234	}	404	}
235		405
236	/*****************************************************************************/	406	/*****************************************************************************/
237		407
238	static int *fdchanges;
239	static int fdchangemax, fdchangecnt;
240
241	static void	408	static void
242	fd_reify (void)	409	fd_reify (EV_P)
243	{	410	{
244	int i;	411	int i;
245		412
246	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
247	{	414	{
…		…
249	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	417	struct ev_io *w;
251		418
252	int events = 0;	419	int events = 0;
253		420
254	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	events \|= w->events;	422	events \|= w->events;
256		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
257	anfd->reify = 0;	433	anfd->reify = 0;
258		434
259	if (anfd->events != events)
260	{
261	method_modify (fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
262	anfd->events = events;	436	anfd->events = events;
263	}
264	}	437	}
265		438
266	fdchangecnt = 0;	439	fdchangecnt = 0;
267	}	440	}
268		441
269	static void	442	static void
270	fd_change (int fd)	443	fd_change (EV_P_ int fd)
271	{	444	{
272	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
273	return;	446	return;
274		447
275	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
276		449
277	++fdchangecnt;	450	++fdchangecnt;
278	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
279	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
280	}	453	}
281		454
		455	static void
		456	fd_kill (EV_P_ int fd)
		457	{
		458	struct ev_io *w;
		459
		460	while ((w = (struct ev_io *)anfds [fd].head))
		461	{
		462	ev_io_stop (EV_A_ w);
		463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
		475	}
		476
282	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
283	static void	478	static void
284	fd_recheck (void)	479	fd_ebadf (EV_P)
285	{	480	{
286	int fd;	481	int fd;
287		482
288	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
289	if (anfds [fd].events)	484	if (anfds [fd].events)
290	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
291	while (anfds [fd].head)	486	fd_kill (EV_A_ fd);
		487	}
		488
		489	/* called on ENOMEM in select/poll to kill some fds and retry */
		490	static void
		491	fd_enomem (EV_P)
		492	{
		493	int fd;
		494
		495	for (fd = anfdmax; fd--; )
		496	if (anfds [fd].events)
292	{	497	{
293	ev_io_stop (anfds [fd].head);	498	fd_kill (EV_A_ fd);
294	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	499	return;
295	}	500	}
		501	}
		502
		503	/* usually called after fork if method needs to re-arm all fds from scratch */
		504	static void
		505	fd_rearm_all (EV_P)
		506	{
		507	int fd;
		508
		509	/* this should be highly optimised to not do anything but set a flag */
		510	for (fd = 0; fd < anfdmax; ++fd)
		511	if (anfds [fd].events)
		512	{
		513	anfds [fd].events = 0;
		514	fd_change (EV_A_ fd);
		515	}
296	}	516	}
297		517
298	/*****************************************************************************/	518	/*****************************************************************************/
299		519
300	static struct ev_timer **timers;
301	static int timermax, timercnt;
302
303	static struct ev_periodic **periodics;
304	static int periodicmax, periodiccnt;
305
306	static void	520	static void
307	upheap (WT *timers, int k)	521	upheap (WT *heap, int k)
308	{	522	{
309	WT w = timers [k];	523	WT w = heap [k];
310		524
311	while (k && timers [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
312	{	526	{
313	timers [k] = timers [k >> 1];	527	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
315	k >>= 1;	529	k >>= 1;
316	}	530	}
317		531
318	timers [k] = w;	532	heap [k] = w;
319	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
320		534
321	}	535	}
322		536
323	static void	537	static void
324	downheap (WT *timers, int N, int k)	538	downheap (WT *heap, int N, int k)
325	{	539	{
326	WT w = timers [k];	540	WT w = heap [k];
327		541
328	while (k < (N >> 1))	542	while (k < (N >> 1))
329	{	543	{
330	int j = k << 1;	544	int j = k << 1;
331		545
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	547	++j;
334		548
335	if (w->at <= timers [j]->at)	549	if (w->at <= heap [j]->at)
336	break;	550	break;
337		551
338	timers [k] = timers [j];	552	heap [k] = heap [j];
339	timers [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
340	k = j;	554	k = j;
341	}	555	}
342		556
343	timers [k] = w;	557	heap [k] = w;
344	timers [k]->active = k + 1;	558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
345	}	566	}
346		567
347	/*****************************************************************************/	568	/*****************************************************************************/
348		569
349	typedef struct	570	typedef struct
350	{	571	{
351	struct ev_signal *head;	572	WL head;
352	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
353	} ANSIG;	574	} ANSIG;
354		575
355	static ANSIG *signals;	576	static ANSIG *signals;
356	static int signalmax;	577	static int signalmax;
…		…
372	}	593	}
373		594
374	static void	595	static void
375	sighandler (int signum)	596	sighandler (int signum)
376	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
377	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
378		603
379	if (!gotsig)	604	if (!gotsig)
380	{	605	{
		606	int old_errno = errno;
381	gotsig = 1;	607	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
383	}	610	}
384	}	611	}
385		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
386	static void	633	static void
387	sigcb (struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	635	{
389	struct ev_signal *w;
390	int signum;	636	int signum;
391		637
392	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	639	gotsig = 0;
394		640
395	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
396	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
397	{	643	ev_feed_signal_event (EV_A_ signum + 1);
398	signals [signum].gotsig = 0;
399
400	for (w = signals [signum].head; w; w = w->next)
401	event ((W)w, EV_SIGNAL);
402	}
403	}	644	}
404		645
405	static void	646	inline void
406	siginit (void)	647	fd_intern (int fd)
407	{	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	653	fcntl (fd, F_SETFD, FD_CLOEXEC);
409	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410
411	/* rather than sort out wether we really need nb, set it */
412	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	654	fcntl (fd, F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	655	#endif
		656	}
		657
		658	static void
		659	siginit (EV_P)
		660	{
		661	fd_intern (sigpipe [0]);
		662	fd_intern (sigpipe [1]);
414		663
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	667	}
418		668
419	/*****************************************************************************/	669	/*****************************************************************************/
420		670
421	static struct ev_idle **idles;
422	static int idlemax, idlecnt;
423
424	static struct ev_prepare **prepares;
425	static int preparemax, preparecnt;
426
427	static struct ev_check **checks;
428	static int checkmax, checkcnt;
429
430	/*****************************************************************************/
431
432	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
433	static struct ev_signal childev;	675	static struct ev_signal childev;
434		676
435	#ifndef WCONTINUED	677	#ifndef WCONTINUED
436	# define WCONTINUED 0	678	# define WCONTINUED 0
437	#endif	679	#endif
438		680
439	static void	681	static void
440	childcb (struct ev_signal *sw, int revents)	682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	683	{
442	struct ev_child *w;	684	struct ev_child *w;
		685
		686	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		687	if (w->pid == pid \|\| !w->pid)
		688	{
		689	ev_priority (w) = ev_priority (sw); /* need to do it now */
		690	w->rpid = pid;
		691	w->rstatus = status;
		692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		693	}
		694	}
		695
		696	static void
		697	childcb (EV_P_ struct ev_signal *sw, int revents)
		698	{
443	int pid, status;	699	int pid, status;
444		700
445	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	702	{
447	if (w->pid == pid \|\| !w->pid)	703	/* make sure we are called again until all childs have been reaped */
448	{	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	705
450	event ((W)w, EV_CHILD);	706	child_reap (EV_A_ sw, pid, pid, status);
451	}	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
452	}	709	}
		710
		711	#endif
453		712
454	/*****************************************************************************/	713	/*****************************************************************************/
455		714
		715	#if EV_USE_KQUEUE
		716	# include "ev_kqueue.c"
		717	#endif
456	#if EV_USE_EPOLL	718	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	719	# include "ev_epoll.c"
458	#endif	720	#endif
		721	#if EV_USE_POLL
		722	# include "ev_poll.c"
		723	#endif
459	#if EV_USE_SELECT	724	#if EV_USE_SELECT
460	# include "ev_select.c"	725	# include "ev_select.c"
461	#endif	726	#endif
462		727
463	int	728	int
…		…
470	ev_version_minor (void)	735	ev_version_minor (void)
471	{	736	{
472	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
473	}	738	}
474		739
475	int ev_init (int flags)	740	/* return true if we are running with elevated privileges and should ignore env variables */
		741	static int
		742	enable_secure (void)
476	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
		747	return getuid () != geteuid ()
		748	\|\| getgid () != getegid ();
		749	#endif
		750	}
		751
		752	unsigned int
		753	ev_method (EV_P)
		754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
477	if (!ev_method)	761	if (!method)
478	{	762	{
479	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
480	{	764	{
481	struct timespec ts;	765	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	767	have_monotonic = 1;
484	}	768	}
485	#endif	769	#endif
486		770
487	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
488	now = get_clock ();	772	mn_now = get_clock ();
489	now_floor = now;	773	now_floor = mn_now;
490	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
491		775
492	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
493	return 0;	777	flags = atoi (getenv ("LIBEV_FLAGS"));
494		778
495	ev_method = EVMETHOD_NONE;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
		782	method = 0;
		783	#if EV_USE_KQUEUE
		784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		785	#endif
496	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		788	#endif
		789	#if EV_USE_POLL
		790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
498	#endif	791	#endif
499	#if EV_USE_SELECT	792	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
501	#endif	794	#endif
502		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
		798	}
		799	}
		800
		801	void
		802	loop_destroy (EV_P)
		803	{
		804	int i;
		805
		806	#if EV_USE_KQUEUE
		807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		808	#endif
		809	#if EV_USE_EPOLL
		810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		811	#endif
		812	#if EV_USE_POLL
		813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		814	#endif
		815	#if EV_USE_SELECT
		816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		817	#endif
		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
		832	method = 0;
		833	}
		834
		835	static void
		836	loop_fork (EV_P)
		837	{
		838	#if EV_USE_EPOLL
		839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		840	#endif
		841	#if EV_USE_KQUEUE
		842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
		861	}
		862
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *
		865	ev_loop_new (unsigned int flags)
		866	{
		867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
		871	loop_init (EV_A_ flags);
		872
		873	if (ev_method (EV_A))
		874	return loop;
		875
		876	return 0;
		877	}
		878
		879	void
		880	ev_loop_destroy (EV_P)
		881	{
		882	loop_destroy (EV_A);
		883	ev_free (loop);
		884	}
		885
		886	void
		887	ev_loop_fork (EV_P)
		888	{
		889	postfork = 1;
		890	}
		891
		892	#endif
		893
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *
		896	#else
		897	int
		898	#endif
		899	ev_default_loop (unsigned int flags)
		900	{
		901	if (sigpipe [0] == sigpipe [1])
		902	if (pipe (sigpipe))
		903	return 0;
		904
		905	if (!default_loop)
		906	{
		907	#if EV_MULTIPLICITY
		908	struct ev_loop *loop = default_loop = &default_loop_struct;
		909	#else
		910	default_loop = 1;
		911	#endif
		912
		913	loop_init (EV_A_ flags);
		914
503	if (ev_method)	915	if (ev_method (EV_A))
504	{	916	{
505	ev_watcher_init (&sigev, sigcb);
506	siginit ();	917	siginit (EV_A);
507		918
		919	#ifndef _WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
		921	ev_set_priority (&childev, EV_MAXPRI);
509	ev_signal_start (&childev);	922	ev_signal_start (EV_A_ &childev);
		923	ev_unref (EV_A); /* child watcher should not keep loop alive */
		924	#endif
510	}	925	}
		926	else
		927	default_loop = 0;
511	}	928	}
512		929
513	return ev_method;	930	return default_loop;
		931	}
		932
		933	void
		934	ev_default_destroy (void)
		935	{
		936	#if EV_MULTIPLICITY
		937	struct ev_loop *loop = default_loop;
		938	#endif
		939
		940	#ifndef _WIN32
		941	ev_ref (EV_A); /* child watcher */
		942	ev_signal_stop (EV_A_ &childev);
		943	#endif
		944
		945	ev_ref (EV_A); /* signal watcher */
		946	ev_io_stop (EV_A_ &sigev);
		947
		948	close (sigpipe [0]); sigpipe [0] = 0;
		949	close (sigpipe [1]); sigpipe [1] = 0;
		950
		951	loop_destroy (EV_A);
		952	}
		953
		954	void
		955	ev_default_fork (void)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = default_loop;
		959	#endif
		960
		961	if (method)
		962	postfork = 1;
514	}	963	}
515		964
516	/*****************************************************************************/	965	/*****************************************************************************/
517		966
518	void
519	ev_fork_prepare (void)
520	{
521	/* nop */
522	}
523
524	void
525	ev_fork_parent (void)
526	{
527	/* nop */
528	}
529
530	void
531	ev_fork_child (void)
532	{
533	#if EV_USE_EPOLL
534	if (ev_method == EVMETHOD_EPOLL)
535	epoll_postfork_child ();
536	#endif
537
538	ev_io_stop (&sigev);
539	close (sigpipe [0]);
540	close (sigpipe [1]);
541	pipe (sigpipe);
542	siginit ();
543	}
544
545	/*****************************************************************************/
546
547	static void	967	static int
		968	any_pending (EV_P)
		969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
		973	if (pendingcnt [pri])
		974	return 1;
		975
		976	return 0;
		977	}
		978
		979	static void
548	call_pending (void)	980	call_pending (EV_P)
549	{	981	{
		982	int pri;
		983
		984	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	985	while (pendingcnt [pri])
551	{	986	{
552	ANPENDING *p = pendings + --pendingcnt;	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		988
554	if (p->w)	989	if (p->w)
555	{	990	{
556	p->w->pending = 0;	991	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
558	}	993	}
559	}	994	}
560	}	995	}
561		996
562	static void	997	static void
563	timers_reify (void)	998	timers_reify (EV_P)
564	{	999	{
565	while (timercnt && timers [0]->at <= now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
566	{	1001	{
567	struct ev_timer *w = timers [0];	1002	struct ev_timer *w = timers [0];
		1003
		1004	assert (("inactive timer on timer heap detected", ev_is_active (w)));
568		1005
569	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
570	if (w->repeat)	1007	if (w->repeat)
571	{	1008	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1010
573	w->at = now + w->repeat;	1011	((WT)w)->at += w->repeat;
		1012	if (((WT)w)->at < mn_now)
		1013	((WT)w)->at = mn_now;
		1014
574	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
575	}	1016	}
576	else	1017	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		1019
579	event ((W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
580	}	1021	}
581	}	1022	}
582		1023
		1024	#if EV_PERIODICS
583	static void	1025	static void
584	periodics_reify (void)	1026	periodics_reify (EV_P)
585	{	1027	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
587	{	1029	{
588	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
589		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
590	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
591	if (w->interval)	1035	if (w->reschedule_cb)
592	{	1036	{
		1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
594	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
595	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
596	}	1046	}
597	else	1047	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		1049
600	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
601	}	1051	}
602	}	1052	}
603		1053
604	static void	1054	static void
605	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
606	{	1056	{
607	int i;	1057	int i;
608		1058
609	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
611	{	1061	{
612	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
613		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
614	if (w->interval)	1066	else if (w->interval)
615	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
617
618	if (fabs (diff) >= 1e-4)
619	{
620	ev_periodic_stop (w);
621	ev_periodic_start (w);
622
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}
625	}
626	}	1068	}
627	}
628		1069
629	static int	1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
		1073	}
		1074	#endif
		1075
		1076	inline int
630	time_update_monotonic (void)	1077	time_update_monotonic (EV_P)
631	{	1078	{
632	now = get_clock ();	1079	mn_now = get_clock ();
633		1080
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	1082	{
636	ev_now = now + diff;	1083	ev_rt_now = rtmn_diff + mn_now;
637	return 0;	1084	return 0;
638	}	1085	}
639	else	1086	else
640	{	1087	{
641	now_floor = now;	1088	now_floor = mn_now;
642	ev_now = ev_time ();	1089	ev_rt_now = ev_time ();
643	return 1;	1090	return 1;
644	}	1091	}
645	}	1092	}
646		1093
647	static void	1094	static void
648	time_update (void)	1095	time_update (EV_P)
649	{	1096	{
650	int i;	1097	int i;
651		1098
652	#if EV_USE_MONOTONIC	1099	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	1100	if (expect_true (have_monotonic))
654	{	1101	{
655	if (time_update_monotonic ())	1102	if (time_update_monotonic (EV_A))
656	{	1103	{
657	ev_tstamp odiff = diff;	1104	ev_tstamp odiff = rtmn_diff;
658		1105
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	1107	{
661	diff = ev_now - now;	1108	rtmn_diff = ev_rt_now - mn_now;
662		1109
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	1111	return; /* all is well */
665		1112
666	ev_now = ev_time ();	1113	ev_rt_now = ev_time ();
667	now = get_clock ();	1114	mn_now = get_clock ();
668	now_floor = now;	1115	now_floor = mn_now;
669	}	1116	}
670		1117
		1118	# if EV_PERIODICS
671	periodics_reschedule (diff - odiff);	1119	periodics_reschedule (EV_A);
		1120	# endif
672	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
		1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	1123	}
674	}	1124	}
675	else	1125	else
676	#endif	1126	#endif
677	{	1127	{
678	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
679		1129
680	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	1131	{
		1132	#if EV_PERIODICS
682	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
683		1135
684	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
687	}	1139	}
688		1140
689	now = ev_now;	1141	mn_now = ev_rt_now;
690	}	1142	}
691	}	1143	}
692		1144
693	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
694		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
695	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
696	{	1161	{
697	double block;	1162	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
699		1164
700	do	1165	do
701	{	1166	{
702	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
704	{	1169	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	1171	call_pending (EV_A);
707	}	1172	}
708		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
709	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
710	fd_reify ();	1179	fd_reify (EV_A);
711		1180
712	/* calculate blocking time */	1181	/* calculate blocking time */
713		1182
714	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
715	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
718	time_update_monotonic ();	1187	time_update_monotonic (EV_A);
719	else	1188	else
720	#endif	1189	#endif
721	{	1190	{
722	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
723	now = ev_now;	1192	mn_now = ev_rt_now;
724	}	1193	}
725		1194
726	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
727	block = 0.;	1196	block = 0.;
728	else	1197	else
729	{	1198	{
730	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
731		1200
732	if (timercnt)	1201	if (timercnt)
733	{	1202	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
735	if (block > to) block = to;	1204	if (block > to) block = to;
736	}	1205	}
737		1206
		1207	#if EV_PERIODICS
738	if (periodiccnt)	1208	if (periodiccnt)
739	{	1209	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
741	if (block > to) block = to;	1211	if (block > to) block = to;
742	}	1212	}
		1213	#endif
743		1214
744	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
745	}	1216	}
746		1217
747	method_poll (block);	1218	method_poll (EV_A_ block);
748		1219
749	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
750	time_update ();	1221	time_update (EV_A);
751		1222
752	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
754	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
755		1228
756	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		1232
760	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
761	if (checkcnt)	1234	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		1236
764	call_pending ();	1237	call_pending (EV_A);
765	}	1238	}
766	while (!ev_loop_done);	1239	while (activecnt && !loop_done);
767		1240
768	if (ev_loop_done != 2)	1241	if (loop_done != 2)
769	ev_loop_done = 0;	1242	loop_done = 0;
		1243	}
		1244
		1245	void
		1246	ev_unloop (EV_P_ int how)
		1247	{
		1248	loop_done = how;
770	}	1249	}
771		1250
772	/*****************************************************************************/	1251	/*****************************************************************************/
773		1252
774	static void	1253	inline void
775	wlist_add (WL *head, WL elem)	1254	wlist_add (WL *head, WL elem)
776	{	1255	{
777	elem->next = *head;	1256	elem->next = *head;
778	*head = elem;	1257	*head = elem;
779	}	1258	}
780		1259
781	static void	1260	inline void
782	wlist_del (WL *head, WL elem)	1261	wlist_del (WL *head, WL elem)
783	{	1262	{
784	while (*head)	1263	while (*head)
785	{	1264	{
786	if (*head == elem)	1265	if (*head == elem)
…		…
791		1270
792	head = &(*head)->next;	1271	head = &(*head)->next;
793	}	1272	}
794	}	1273	}
795		1274
796	static void	1275	inline void
797	ev_clear_pending (W w)	1276	ev_clear_pending (EV_P_ W w)
798	{	1277	{
799	if (w->pending)	1278	if (w->pending)
800	{	1279	{
801	pendings [w->pending - 1].w = 0;	1280	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1281	w->pending = 0;
803	}	1282	}
804	}	1283	}
805		1284
806	static void	1285	inline void
807	ev_start (W w, int active)	1286	ev_start (EV_P_ W w, int active)
808	{	1287	{
		1288	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1289	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1290
809	w->active = active;	1291	w->active = active;
		1292	ev_ref (EV_A);
810	}	1293	}
811		1294
812	static void	1295	inline void
813	ev_stop (W w)	1296	ev_stop (EV_P_ W w)
814	{	1297	{
		1298	ev_unref (EV_A);
815	w->active = 0;	1299	w->active = 0;
816	}	1300	}
817		1301
818	/*****************************************************************************/	1302	/*****************************************************************************/
819		1303
820	void	1304	void
821	ev_io_start (struct ev_io *w)	1305	ev_io_start (EV_P_ struct ev_io *w)
822	{	1306	{
823	int fd = w->fd;	1307	int fd = w->fd;
824		1308
825	if (ev_is_active (w))	1309	if (ev_is_active (w))
826	return;	1310	return;
827		1311
828	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
829		1313
830	ev_start ((W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1317
834	fd_change (fd);	1318	fd_change (EV_A_ fd);
835	}	1319	}
836		1320
837	void	1321	void
838	ev_io_stop (struct ev_io *w)	1322	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1323	{
840	ev_clear_pending ((W)w);	1324	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
842	return;	1326	return;
843		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
846		1332
847	fd_change (w->fd);	1333	fd_change (EV_A_ w->fd);
848	}	1334	}
849		1335
850	void	1336	void
851	ev_timer_start (struct ev_timer *w)	1337	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1338	{
853	if (ev_is_active (w))	1339	if (ev_is_active (w))
854	return;	1340	return;
855		1341
856	w->at += now;	1342	((WT)w)->at += mn_now;
857		1343
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1345
860	ev_start ((W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
862	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
864	}
865		1350
		1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1352	}
		1353
866	void	1354	void
867	ev_timer_stop (struct ev_timer *w)	1355	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1356	{
869	ev_clear_pending ((W)w);	1357	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1358	if (!ev_is_active (w))
871	return;	1359	return;
872		1360
		1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1362
873	if (w->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
874	{	1364	{
875	timers [w->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
876	downheap ((WT *)timers, timercnt, w->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
877	}	1367	}
878		1368
879	w->at = w->repeat;	1369	((WT)w)->at -= mn_now;
880		1370
881	ev_stop ((W)w);	1371	ev_stop (EV_A_ (W)w);
882	}	1372	}
883		1373
884	void	1374	void
885	ev_timer_again (struct ev_timer *w)	1375	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1376	{
887	if (ev_is_active (w))	1377	if (ev_is_active (w))
888	{	1378	{
889	if (w->repeat)	1379	if (w->repeat)
890	{	1380	{
891	w->at = now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
893	}	1383	}
894	else	1384	else
895	ev_timer_stop (w);	1385	ev_timer_stop (EV_A_ w);
896	}	1386	}
897	else if (w->repeat)	1387	else if (w->repeat)
		1388	{
		1389	w->at = w->repeat;
898	ev_timer_start (w);	1390	ev_timer_start (EV_A_ w);
		1391	}
899	}	1392	}
900		1393
		1394	#if EV_PERIODICS
901	void	1395	void
902	ev_periodic_start (struct ev_periodic *w)	1396	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1397	{
904	if (ev_is_active (w))	1398	if (ev_is_active (w))
905	return;	1399	return;
906		1400
		1401	if (w->reschedule_cb)
		1402	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1403	else if (w->interval)
		1404	{
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1405	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908
909	/* this formula differs from the one in periodic_reify because we do not always round up */	1406	/* this formula differs from the one in periodic_reify because we do not always round up */
910	if (w->interval)
911	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1407	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1408	}
912		1409
913	ev_start ((W)w, ++periodiccnt);	1410	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1411	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
915	periodics [periodiccnt - 1] = w;	1412	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1413	upheap ((WT *)periodics, periodiccnt - 1);
917	}
918		1414
		1415	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1416	}
		1417
919	void	1418	void
920	ev_periodic_stop (struct ev_periodic *w)	1419	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1420	{
922	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1422	if (!ev_is_active (w))
924	return;	1423	return;
925		1424
		1425	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1426
926	if (w->active < periodiccnt--)	1427	if (((W)w)->active < periodiccnt--)
927	{	1428	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1429	periodics [((W)w)->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1430	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
930	}	1431	}
931		1432
932	ev_stop ((W)w);	1433	ev_stop (EV_A_ (W)w);
933	}	1434	}
934		1435
935	void	1436	void
		1437	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1438	{
		1439	/* TODO: use adjustheap and recalculation */
		1440	ev_periodic_stop (EV_A_ w);
		1441	ev_periodic_start (EV_A_ w);
		1442	}
		1443	#endif
		1444
		1445	void
936	ev_signal_start (struct ev_signal *w)	1446	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1447	{
938	if (ev_is_active (w))	1448	if (ev_is_active (w))
939	return;	1449	return;
940		1450
		1451	ev_start (EV_A_ (W)w, ++idlecnt);
		1452	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1453	idles [idlecnt - 1] = w;
		1454	}
		1455
		1456	void
		1457	ev_idle_stop (EV_P_ struct ev_idle *w)
		1458	{
		1459	ev_clear_pending (EV_A_ (W)w);
		1460	if (!ev_is_active (w))
		1461	return;
		1462
		1463	idles [((W)w)->active - 1] = idles [--idlecnt];
		1464	ev_stop (EV_A_ (W)w);
		1465	}
		1466
		1467	void
		1468	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1469	{
		1470	if (ev_is_active (w))
		1471	return;
		1472
		1473	ev_start (EV_A_ (W)w, ++preparecnt);
		1474	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1475	prepares [preparecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (!ev_is_active (w))
		1483	return;
		1484
		1485	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1486	ev_stop (EV_A_ (W)w);
		1487	}
		1488
		1489	void
		1490	ev_check_start (EV_P_ struct ev_check *w)
		1491	{
		1492	if (ev_is_active (w))
		1493	return;
		1494
		1495	ev_start (EV_A_ (W)w, ++checkcnt);
		1496	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1497	checks [checkcnt - 1] = w;
		1498	}
		1499
		1500	void
		1501	ev_check_stop (EV_P_ struct ev_check *w)
		1502	{
		1503	ev_clear_pending (EV_A_ (W)w);
		1504	if (!ev_is_active (w))
		1505	return;
		1506
		1507	checks [((W)w)->active - 1] = checks [--checkcnt];
		1508	ev_stop (EV_A_ (W)w);
		1509	}
		1510
		1511	#ifndef SA_RESTART
		1512	# define SA_RESTART 0
		1513	#endif
		1514
		1515	void
		1516	ev_signal_start (EV_P_ struct ev_signal *w)
		1517	{
		1518	#if EV_MULTIPLICITY
		1519	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1520	#endif
		1521	if (ev_is_active (w))
		1522	return;
		1523
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1524	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1525
943	ev_start ((W)w, 1);	1526	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1527	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1528	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1529
947	if (!w->next)	1530	if (!((WL)w)->next)
948	{	1531	{
		1532	#if _WIN32
		1533	signal (w->signum, sighandler);
		1534	#else
949	struct sigaction sa;	1535	struct sigaction sa;
950	sa.sa_handler = sighandler;	1536	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1537	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1538	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1539	sigaction (w->signum, &sa, 0);
		1540	#endif
954	}	1541	}
955	}	1542	}
956		1543
957	void	1544	void
958	ev_signal_stop (struct ev_signal *w)	1545	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1546	{
960	ev_clear_pending ((W)w);	1547	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1548	if (!ev_is_active (w))
962	return;	1549	return;
963		1550
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1552	ev_stop (EV_A_ (W)w);
966		1553
967	if (!signals [w->signum - 1].head)	1554	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1555	signal (w->signum, SIG_DFL);
969	}	1556	}
970		1557
971	void	1558	void
972	ev_idle_start (struct ev_idle *w)	1559	ev_child_start (EV_P_ struct ev_child *w)
973	{	1560	{
		1561	#if EV_MULTIPLICITY
		1562	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1563	#endif
974	if (ev_is_active (w))	1564	if (ev_is_active (w))
975	return;	1565	return;
976		1566
977	ev_start ((W)w, ++idlecnt);
978	array_needsize (idles, idlemax, idlecnt, );
979	idles [idlecnt - 1] = w;
980	}
981
982	void
983	ev_idle_stop (struct ev_idle *w)
984	{
985	ev_clear_pending ((W)w);
986	if (ev_is_active (w))
987	return;
988
989	idles [w->active - 1] = idles [--idlecnt];
990	ev_stop ((W)w);
991	}
992
993	void
994	ev_prepare_start (struct ev_prepare *w)
995	{
996	if (ev_is_active (w))
997	return;
998
999	ev_start ((W)w, ++preparecnt);
1000	array_needsize (prepares, preparemax, preparecnt, );
1001	prepares [preparecnt - 1] = w;
1002	}
1003
1004	void
1005	ev_prepare_stop (struct ev_prepare *w)
1006	{
1007	ev_clear_pending ((W)w);
1008	if (ev_is_active (w))
1009	return;
1010
1011	prepares [w->active - 1] = prepares [--preparecnt];
1012	ev_stop ((W)w);
1013	}
1014
1015	void
1016	ev_check_start (struct ev_check *w)
1017	{
1018	if (ev_is_active (w))
1019	return;
1020
1021	ev_start ((W)w, ++checkcnt);
1022	array_needsize (checks, checkmax, checkcnt, );
1023	checks [checkcnt - 1] = w;
1024	}
1025
1026	void
1027	ev_check_stop (struct ev_check *w)
1028	{
1029	ev_clear_pending ((W)w);
1030	if (ev_is_active (w))
1031	return;
1032
1033	checks [w->active - 1] = checks [--checkcnt];
1034	ev_stop ((W)w);
1035	}
1036
1037	void
1038	ev_child_start (struct ev_child *w)
1039	{
1040	if (ev_is_active (w))
1041	return;
1042
1043	ev_start ((W)w, 1);	1567	ev_start (EV_A_ (W)w, 1);
1044	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1568	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045	}	1569	}
1046		1570
1047	void	1571	void
1048	ev_child_stop (struct ev_child *w)	1572	ev_child_stop (EV_P_ struct ev_child *w)
1049	{	1573	{
1050	ev_clear_pending ((W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1051	if (ev_is_active (w))	1575	if (!ev_is_active (w))
1052	return;	1576	return;
1053		1577
1054	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1578	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1579	ev_stop (EV_A_ (W)w);
1056	}	1580	}
1057		1581
1058	/*****************************************************************************/	1582	/*****************************************************************************/
1059		1583
1060	struct ev_once	1584	struct ev_once
…		…
1064	void (cb)(int revents, void arg);	1588	void (cb)(int revents, void arg);
1065	void *arg;	1589	void *arg;
1066	};	1590	};
1067		1591
1068	static void	1592	static void
1069	once_cb (struct ev_once *once, int revents)	1593	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1594	{
1071	void (cb)(int revents, void arg) = once->cb;	1595	void (cb)(int revents, void arg) = once->cb;
1072	void *arg = once->arg;	1596	void *arg = once->arg;
1073		1597
1074	ev_io_stop (&once->io);	1598	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1599	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1600	ev_free (once);
1077		1601
1078	cb (revents, arg);	1602	cb (revents, arg);
1079	}	1603	}
1080		1604
1081	static void	1605	static void
1082	once_cb_io (struct ev_io *w, int revents)	1606	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1607	{
1084	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1608	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1085	}	1609	}
1086		1610
1087	static void	1611	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1612	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1613	{
1090	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1614	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1091	}	1615	}
1092		1616
1093	void	1617	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1618	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1095	{	1619	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1620	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1097		1621
1098	if (!once)	1622	if (!once)
1099	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1623	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1100	else	1624	else
1101	{	1625	{
1102	once->cb = cb;	1626	once->cb = cb;
1103	once->arg = arg;	1627	once->arg = arg;
1104		1628
1105	ev_watcher_init (&once->io, once_cb_io);	1629	ev_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1630	if (fd >= 0)
1107	{	1631	{
1108	ev_io_set (&once->io, fd, events);	1632	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1633	ev_io_start (EV_A_ &once->io);
1110	}	1634	}
1111		1635
1112	ev_watcher_init (&once->to, once_cb_to);	1636	ev_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1637	if (timeout >= 0.)
1114	{	1638	{
1115	ev_timer_set (&once->to, timeout, 0.);	1639	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1640	ev_timer_start (EV_A_ &once->to);
1117	}	1641	}
1118	}	1642	}
1119	}	1643	}
1120		1644
1121	/*****************************************************************************/	1645	#ifdef __cplusplus
1122
1123	#if 0
1124
1125	struct ev_io wio;
1126
1127	static void
1128	sin_cb (struct ev_io *w, int revents)
1129	{
1130	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1131	}	1646	}
1132
1133	static void
1134	ocb (struct ev_timer *w, int revents)
1135	{
1136	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1137	ev_timer_stop (w);
1138	ev_timer_start (w);
1139	}
1140
1141	static void
1142	scb (struct ev_signal *w, int revents)
1143	{
1144	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1145	ev_io_stop (&wio);
1146	ev_io_start (&wio);
1147	}
1148
1149	static void
1150	gcb (struct ev_signal *w, int revents)
1151	{
1152	fprintf (stderr, "generic %x\n", revents);
1153
1154	}
1155
1156	int main (void)
1157	{
1158	ev_init (0);
1159
1160	ev_io_init (&wio, sin_cb, 0, EV_READ);
1161	ev_io_start (&wio);
1162
1163	struct ev_timer t[10000];
1164
1165	#if 0
1166	int i;
1167	for (i = 0; i < 10000; ++i)
1168	{
1169	struct ev_timer *w = t + i;
1170	ev_watcher_init (w, ocb, i);
1171	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1172	ev_timer_start (w);
1173	if (drand48 () < 0.5)
1174	ev_timer_stop (w);
1175	}
1176	#endif	1647	#endif
1177		1648
1178	struct ev_timer t1;
1179	ev_timer_init (&t1, ocb, 5, 10);
1180	ev_timer_start (&t1);
1181
1182	struct ev_signal sig;
1183	ev_signal_init (&sig, scb, SIGQUIT);
1184	ev_signal_start (&sig);
1185
1186	struct ev_check cw;
1187	ev_check_init (&cw, gcb);
1188	ev_check_start (&cw);
1189
1190	struct ev_idle iw;
1191	ev_idle_init (&iw, gcb);
1192	ev_idle_start (&iw);
1193
1194	ev_loop (0);
1195
1196	return 0;
1197	}
1198
1199	#endif
1200
1201
1202
1203

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Comparing libev/ev.c (file contents): Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs. Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC