ViewVC Help

View File | Revision Log | Show Annotations | Download File

/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 1.112 by root, Mon Nov 12 07:20:24 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 EMPTY /* required for microsofts broken pseudo-c compiler */
		173
101	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
102	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
103	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
104		177
105	static ev_tstamp now_floor, now, diff; /* monotonic clock */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
		184	/*****************************************************************************/
		185
		186	static void (*syserr_cb)(const char *msg);
		187
		188	void ev_set_syserr_cb (void (*cb)(const char *msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void *(*alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
		234	typedef struct
		235	{
		236	WL head;
		237	unsigned char events;
		238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
		242	} ANFD;
		243
		244	typedef struct
		245	{
		246	W w;
		247	int events;
		248	} ANPENDING;
		249
		250	#if EV_MULTIPLICITY
		251
		252	struct ev_loop
		253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
		256	#define VAR(name,decl) decl;
		257	#include "ev_vars.h"
		258	#undef VAR
		259	};
		260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
		264
		265	#else
		266
106	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
107	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
108		271
109	static int have_monotonic; /* runtime */	272	static int default_loop;
110		273
111	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
112	static void (*method_modify)(int fd, int oev, int nev);
113	static void (*method_poll)(ev_tstamp timeout);
114		275
115	/*****************************************************************************/	276	/*****************************************************************************/
116		277
117	ev_tstamp	278	ev_tstamp
118	ev_time (void)	279	ev_time (void)
…		…
126	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
127	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
128	#endif	289	#endif
129	}	290	}
130		291
131	static ev_tstamp	292	inline ev_tstamp
132	get_clock (void)	293	get_clock (void)
133	{	294	{
134	#if EV_USE_MONOTONIC	295	#if EV_USE_MONOTONIC
135	if (expect_true (have_monotonic))	296	if (expect_true (have_monotonic))
136	{	297	{
…		…
141	#endif	302	#endif
142		303
143	return ev_time ();	304	return ev_time ();
144	}	305	}
145		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
146	#define array_roundsize(base,n) ((n) | 4 & ~3)	315	#define array_roundsize(type,n) (((n) | 4) & ~3)
147		316
148	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
149	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
150	{ \	319	{ \
151	int newcnt = cur; \	320	int newcnt = cur; \
152	do \	321	do \
153	{ \	322	{ \
154	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
155	} \	324	} \
156	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
157	\	326	\
158	base = realloc (base, sizeof (*base) * (newcnt)); \	327	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
159	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
160	cur = newcnt; \	329	cur = newcnt; \
161	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
162		342
163	/*****************************************************************************/	343	/*****************************************************************************/
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		344
175	static void	345	static void
176	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
177	{	347	{
178	while (count--)	348	while (count--)
…		…
183		353
184	++base;	354	++base;
185	}	355	}
186	}	356	}
187		357
188	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
189	{	360	{
190	W w;	361	W w_ = (W)w;
191	int events;
192	} ANPENDING;
193		362
194	static ANPENDING *pendings;
195	static int pendingmax, pendingcnt;
196
197	static void
198	event (W w, int events)
199	{
200	if (w->pending)	363	if (w_->pending)
201	{	364	{
202	pendings [w->pending - 1].events |= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
203	return;	366	return;
204	}	367	}
205		368
206	w->pending = ++pendingcnt;	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
207	array_needsize (pendings, pendingmax, pendingcnt, );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
208	pendings [pendingcnt - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
209	pendings [pendingcnt - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
210	}	373	}
211		374
212	static void	375	static void
213	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
214	{	377	{
215	int i;	378	int i;
216		379
217	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
218	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
219	}	382	}
220		383
221	static void	384	inline void
222	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
223	{	386	{
224	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
225	struct ev_io *w;	388	struct ev_io *w;
226		389
227	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
228	{	391	{
229	int ev = w->events & events;	392	int ev = w->events & revents;
230		393
231	if (ev)	394	if (ev)
232	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
233	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
234	}	403	}
235		404
236	/*****************************************************************************/	405	/*****************************************************************************/
237		406
238	static int *fdchanges;
239	static int fdchangemax, fdchangecnt;
240
241	static void	407	static void
242	fd_reify (void)	408	fd_reify (EV_P)
243	{	409	{
244	int i;	410	int i;
245		411
246	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
247	{	413	{
…		…
249	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	416	struct ev_io *w;
251		417
252	int events = 0;	418	int events = 0;
253		419
254	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
255	events |= w->events;	421	events |= w->events;
256		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
257	anfd->reify = 0;	432	anfd->reify = 0;
258		433
259	if (anfd->events != events)
260	{
261	method_modify (fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
262	anfd->events = events;	435	anfd->events = events;
263	}
264	}	436	}
265		437
266	fdchangecnt = 0;	438	fdchangecnt = 0;
267	}	439	}
268		440
269	static void	441	static void
270	fd_change (int fd)	442	fd_change (EV_P_ int fd)
271	{	443	{
272	if (anfds [fd].reify || fdchangecnt < 0)	444	if (anfds [fd].reify)
273	return;	445	return;
274		446
275	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
276		448
277	++fdchangecnt;	449	++fdchangecnt;
278	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
279	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
280	}	452	}
281		453
		454	static void
		455	fd_kill (EV_P_ int fd)
		456	{
		457	struct ev_io *w;
		458
		459	while ((w = (struct ev_io *)anfds [fd].head))
		460	{
		461	ev_io_stop (EV_A_ w);
		462	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
		474	}
		475
282	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
283	static void	477	static void
284	fd_recheck (void)	478	fd_ebadf (EV_P)
285	{	479	{
286	int fd;	480	int fd;
287		481
288	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
289	if (anfds [fd].events)	483	if (anfds [fd].events)
290	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
291	while (anfds [fd].head)	485	fd_kill (EV_A_ fd);
		486	}
		487
		488	/* called on ENOMEM in select/poll to kill some fds and retry */
		489	static void
		490	fd_enomem (EV_P)
		491	{
		492	int fd;
		493
		494	for (fd = anfdmax; fd--; )
		495	if (anfds [fd].events)
292	{	496	{
293	ev_io_stop (anfds [fd].head);	497	fd_kill (EV_A_ fd);
294	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	498	return;
295	}	499	}
		500	}
		501
		502	/* usually called after fork if method needs to re-arm all fds from scratch */
		503	static void
		504	fd_rearm_all (EV_P)
		505	{
		506	int fd;
		507
		508	/* this should be highly optimised to not do anything but set a flag */
		509	for (fd = 0; fd < anfdmax; ++fd)
		510	if (anfds [fd].events)
		511	{
		512	anfds [fd].events = 0;
		513	fd_change (EV_A_ fd);
		514	}
296	}	515	}
297		516
298	/*****************************************************************************/	517	/*****************************************************************************/
299		518
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	519	static void
307	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
308	{	521	{
309	WT w = timers [k];	522	WT w = heap [k];
310		523
311	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
312	{	525	{
313	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
315	k >>= 1;	528	k >>= 1;
316	}	529	}
317		530
318	timers [k] = w;	531	heap [k] = w;
319	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
320		533
321	}	534	}
322		535
323	static void	536	static void
324	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
325	{	538	{
326	WT w = timers [k];	539	WT w = heap [k];
327		540
328	while (k < (N >> 1))	541	while (k < (N >> 1))
329	{	542	{
330	int j = k << 1;	543	int j = k << 1;
331		544
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	546	++j;
334		547
335	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
336	break;	549	break;
337		550
338	timers [k] = timers [j];	551	heap [k] = heap [j];
339	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
340	k = j;	553	k = j;
341	}	554	}
342		555
343	timers [k] = w;	556	heap [k] = w;
344	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
345	}	565	}
346		566
347	/*****************************************************************************/	567	/*****************************************************************************/
348		568
349	typedef struct	569	typedef struct
350	{	570	{
351	struct ev_signal *head;	571	WL head;
352	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
353	} ANSIG;	573	} ANSIG;
354		574
355	static ANSIG *signals;	575	static ANSIG *signals;
356	static int signalmax;	576	static int signalmax;
…		…
372	}	592	}
373		593
374	static void	594	static void
375	sighandler (int signum)	595	sighandler (int signum)
376	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
377	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
378		602
379	if (!gotsig)	603	if (!gotsig)
380	{	604	{
		605	int old_errno = errno;
381	gotsig = 1;	606	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
383	}	609	}
384	}	610	}
385		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 || signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
386	static void	632	static void
387	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	634	{
389	struct ev_signal *w;
390	int signum;	635	int signum;
391		636
392	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	638	gotsig = 0;
394		639
395	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
396	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
397	{	642	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	}	643	}
404		644
405	static void	645	inline void
406	siginit (void)	646	fd_intern (int fd)
407	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	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);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	654	#endif
		655	}
		656
		657	static void
		658	siginit (EV_P)
		659	{
		660	fd_intern (sigpipe [0]);
		661	fd_intern (sigpipe [1]);
414		662
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	666	}
418		667
419	/*****************************************************************************/	668	/*****************************************************************************/
420		669
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];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
433	static struct ev_signal childev;	674	static struct ev_signal childev;
434		675
435	#ifndef WCONTINUED	676	#ifndef WCONTINUED
436	# define WCONTINUED 0	677	# define WCONTINUED 0
437	#endif	678	#endif
438		679
439	static void	680	static void
440	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	682	{
442	struct ev_child *w;	683	struct ev_child *w;
		684
		685	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		686	if (w->pid == pid || !w->pid)
		687	{
		688	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		689	w->rpid = pid;
		690	w->rstatus = status;
		691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		692	}
		693	}
		694
		695	static void
		696	childcb (EV_P_ struct ev_signal *sw, int revents)
		697	{
443	int pid, status;	698	int pid, status;
444		699
445	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
447	if (w->pid == pid || !w->pid)	702	/* make sure we are called again until all childs have been reaped */
448	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	704
450	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
451	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
452	}	708	}
		709
		710	#endif
453		711
454	/*****************************************************************************/	712	/*****************************************************************************/
455		713
		714	#if EV_USE_KQUEUE
		715	# include "ev_kqueue.c"
		716	#endif
456	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	718	# include "ev_epoll.c"
458	#endif	719	#endif
		720	#if EV_USE_POLL
		721	# include "ev_poll.c"
		722	#endif
459	#if EV_USE_SELECT	723	#if EV_USE_SELECT
460	# include "ev_select.c"	724	# include "ev_select.c"
461	#endif	725	#endif
462		726
463	int	727	int
…		…
470	ev_version_minor (void)	734	ev_version_minor (void)
471	{	735	{
472	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
473	}	737	}
474		738
475	int ev_init (int flags)	739	/* return true if we are running with elevated privileges and should ignore env variables */
		740	static int
		741	enable_secure (void)
476	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
		746	return getuid () != geteuid ()
		747	|| getgid () != getegid ();
		748	#endif
		749	}
		750
		751	unsigned int
		752	ev_method (EV_P)
		753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ unsigned int flags)
		759	{
477	if (!ev_method)	760	if (!method)
478	{	761	{
479	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
480	{	763	{
481	struct timespec ts;	764	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	766	have_monotonic = 1;
484	}	767	}
485	#endif	768	#endif
486		769
487	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
488	now = get_clock ();	771	mn_now = get_clock ();
489	now_floor = now;	772	now_floor = mn_now;
490	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
491		774
492	if (pipe (sigpipe))	775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
493	return 0;	776	flags = atoi (getenv ("LIBEV_FLAGS"));
494		777
495	ev_method = EVMETHOD_NONE;	778	if (!(flags & 0x0000ffff))
		779	flags |= 0x0000ffff;
		780
		781	method = 0;
		782	#if EV_USE_KQUEUE
		783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		784	#endif
496	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		787	#endif
		788	#if EV_USE_POLL
		789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
498	#endif	790	#endif
499	#if EV_USE_SELECT	791	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
501	#endif	793	#endif
502		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
		797	}
		798	}
		799
		800	void
		801	loop_destroy (EV_P)
		802	{
		803	int i;
		804
		805	#if EV_USE_KQUEUE
		806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		807	#endif
		808	#if EV_USE_EPOLL
		809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		810	#endif
		811	#if EV_USE_POLL
		812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		813	#endif
		814	#if EV_USE_SELECT
		815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		816	#endif
		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
		831	method = 0;
		832	}
		833
		834	static void
		835	loop_fork (EV_P)
		836	{
		837	#if EV_USE_EPOLL
		838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		839	#endif
		840	#if EV_USE_KQUEUE
		841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
		860	}
		861
		862	#if EV_MULTIPLICITY
		863	struct ev_loop *
		864	ev_loop_new (unsigned int flags)
		865	{
		866	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
		870	loop_init (EV_A_ flags);
		871
		872	if (ev_method (EV_A))
		873	return loop;
		874
		875	return 0;
		876	}
		877
		878	void
		879	ev_loop_destroy (EV_P)
		880	{
		881	loop_destroy (EV_A);
		882	ev_free (loop);
		883	}
		884
		885	void
		886	ev_loop_fork (EV_P)
		887	{
		888	postfork = 1;
		889	}
		890
		891	#endif
		892
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *
		895	#else
		896	int
		897	#endif
		898	ev_default_loop (unsigned int flags)
		899	{
		900	if (sigpipe [0] == sigpipe [1])
		901	if (pipe (sigpipe))
		902	return 0;
		903
		904	if (!default_loop)
		905	{
		906	#if EV_MULTIPLICITY
		907	struct ev_loop *loop = default_loop = &default_loop_struct;
		908	#else
		909	default_loop = 1;
		910	#endif
		911
		912	loop_init (EV_A_ flags);
		913
503	if (ev_method)	914	if (ev_method (EV_A))
504	{	915	{
505	ev_watcher_init (&sigev, sigcb);
506	siginit ();	916	siginit (EV_A);
507		917
		918	#ifndef _WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
509	ev_signal_start (&childev);	921	ev_signal_start (EV_A_ &childev);
		922	ev_unref (EV_A); /* child watcher should not keep loop alive */
		923	#endif
510	}	924	}
		925	else
		926	default_loop = 0;
511	}	927	}
512		928
513	return ev_method;	929	return default_loop;
		930	}
		931
		932	void
		933	ev_default_destroy (void)
		934	{
		935	#if EV_MULTIPLICITY
		936	struct ev_loop *loop = default_loop;
		937	#endif
		938
		939	#ifndef _WIN32
		940	ev_ref (EV_A); /* child watcher */
		941	ev_signal_stop (EV_A_ &childev);
		942	#endif
		943
		944	ev_ref (EV_A); /* signal watcher */
		945	ev_io_stop (EV_A_ &sigev);
		946
		947	close (sigpipe [0]); sigpipe [0] = 0;
		948	close (sigpipe [1]); sigpipe [1] = 0;
		949
		950	loop_destroy (EV_A);
		951	}
		952
		953	void
		954	ev_default_fork (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
		959
		960	if (method)
		961	postfork = 1;
514	}	962	}
515		963
516	/*****************************************************************************/	964	/*****************************************************************************/
517		965
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	966	static int
		967	any_pending (EV_P)
		968	{
		969	int pri;
		970
		971	for (pri = NUMPRI; pri--; )
		972	if (pendingcnt [pri])
		973	return 1;
		974
		975	return 0;
		976	}
		977
		978	static void
548	call_pending (void)	979	call_pending (EV_P)
549	{	980	{
		981	int pri;
		982
		983	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	984	while (pendingcnt [pri])
551	{	985	{
552	ANPENDING *p = pendings + --pendingcnt;	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		987
554	if (p->w)	988	if (p->w)
555	{	989	{
556	p->w->pending = 0;	990	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
558	}	992	}
559	}	993	}
560	}	994	}
561		995
562	static void	996	static void
563	timers_reify (void)	997	timers_reify (EV_P)
564	{	998	{
565	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
566	{	1000	{
567	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
		1002
		1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
568		1004
569	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
570	if (w->repeat)	1006	if (w->repeat)
571	{	1007	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
573	w->at = now + w->repeat;	1010	((WT)w)->at += w->repeat;
		1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
574	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
575	}	1015	}
576	else	1016	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		1018
579	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
580	}	1020	}
581	}	1021	}
582		1022
		1023	#if EV_PERIODICS
583	static void	1024	static void
584	periodics_reify (void)	1025	periodics_reify (EV_P)
585	{	1026	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
587	{	1028	{
588	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
589		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
590	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
591	if (w->interval)	1034	if (w->reschedule_cb)
592	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1042	((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));	1043	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);	1044	downheap ((WT *)periodics, periodiccnt, 0);
596	}	1045	}
597	else	1046	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		1048
600	event ((W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
601	}	1050	}
602	}	1051	}
603		1052
604	static void	1053	static void
605	periodics_reschedule (ev_tstamp diff)	1054	periodics_reschedule (EV_P)
606	{	1055	{
607	int i;	1056	int i;
608		1057
609	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
611	{	1060	{
612	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
613		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
614	if (w->interval)	1065	else if (w->interval)
615	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1066	((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	}	1067	}
627	}
628		1068
629	static int	1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
		1072	}
		1073	#endif
		1074
		1075	inline int
630	time_update_monotonic (void)	1076	time_update_monotonic (EV_P)
631	{	1077	{
632	now = get_clock ();	1078	mn_now = get_clock ();
633		1079
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	1081	{
636	ev_now = now + diff;	1082	ev_rt_now = rtmn_diff + mn_now;
637	return 0;	1083	return 0;
638	}	1084	}
639	else	1085	else
640	{	1086	{
641	now_floor = now;	1087	now_floor = mn_now;
642	ev_now = ev_time ();	1088	ev_rt_now = ev_time ();
643	return 1;	1089	return 1;
644	}	1090	}
645	}	1091	}
646		1092
647	static void	1093	static void
648	time_update (void)	1094	time_update (EV_P)
649	{	1095	{
650	int i;	1096	int i;
651		1097
652	#if EV_USE_MONOTONIC	1098	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	1099	if (expect_true (have_monotonic))
654	{	1100	{
655	if (time_update_monotonic ())	1101	if (time_update_monotonic (EV_A))
656	{	1102	{
657	ev_tstamp odiff = diff;	1103	ev_tstamp odiff = rtmn_diff;
658		1104
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	1106	{
661	diff = ev_now - now;	1107	rtmn_diff = ev_rt_now - mn_now;
662		1108
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	1110	return; /* all is well */
665		1111
666	ev_now = ev_time ();	1112	ev_rt_now = ev_time ();
667	now = get_clock ();	1113	mn_now = get_clock ();
668	now_floor = now;	1114	now_floor = mn_now;
669	}	1115	}
670		1116
		1117	# if EV_PERIODICS
671	periodics_reschedule (diff - odiff);	1118	periodics_reschedule (EV_A);
		1119	# endif
672	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
		1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	1122	}
674	}	1123	}
675	else	1124	else
676	#endif	1125	#endif
677	{	1126	{
678	ev_now = ev_time ();	1127	ev_rt_now = ev_time ();
679		1128
680	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1129	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	1130	{
		1131	#if EV_PERIODICS
682	periodics_reschedule (ev_now - now);	1132	periodics_reschedule (EV_A);
		1133	#endif
683		1134
684	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
687	}	1138	}
688		1139
689	now = ev_now;	1140	mn_now = ev_rt_now;
690	}	1141	}
691	}	1142	}
692		1143
693	int ev_loop_done;	1144	void
		1145	ev_ref (EV_P)
		1146	{
		1147	++activecnt;
		1148	}
694		1149
		1150	void
		1151	ev_unref (EV_P)
		1152	{
		1153	--activecnt;
		1154	}
		1155
		1156	static int loop_done;
		1157
		1158	void
695	void ev_loop (int flags)	1159	ev_loop (EV_P_ int flags)
696	{	1160	{
697	double block;	1161	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1162	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
699		1163
700	do	1164	do
701	{	1165	{
702	/* queue check watchers (and execute them) */	1166	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	1167	if (expect_false (preparecnt))
704	{	1168	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	1170	call_pending (EV_A);
707	}	1171	}
708		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
709	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
710	fd_reify ();	1178	fd_reify (EV_A);
711		1179
712	/* calculate blocking time */	1180	/* calculate blocking time */
713		1181
714	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
715	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
718	time_update_monotonic ();	1186	time_update_monotonic (EV_A);
719	else	1187	else
720	#endif	1188	#endif
721	{	1189	{
722	ev_now = ev_time ();	1190	ev_rt_now = ev_time ();
723	now = ev_now;	1191	mn_now = ev_rt_now;
724	}	1192	}
725		1193
726	if (flags & EVLOOP_NONBLOCK || idlecnt)	1194	if (flags & EVLOOP_NONBLOCK || idlecnt)
727	block = 0.;	1195	block = 0.;
728	else	1196	else
729	{	1197	{
730	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
731		1199
732	if (timercnt)	1200	if (timercnt)
733	{	1201	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
735	if (block > to) block = to;	1203	if (block > to) block = to;
736	}	1204	}
737		1205
		1206	#if EV_PERIODICS
738	if (periodiccnt)	1207	if (periodiccnt)
739	{	1208	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
741	if (block > to) block = to;	1210	if (block > to) block = to;
742	}	1211	}
		1212	#endif
743		1213
744	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
745	}	1215	}
746		1216
747	method_poll (block);	1217	method_poll (EV_A_ block);
748		1218
749	/* update ev_now, do magic */	1219	/* update ev_rt_now, do magic */
750	time_update ();	1220	time_update (EV_A);
751		1221
752	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
754	periodics_reify (); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
755		1227
756	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		1231
760	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
761	if (checkcnt)	1233	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		1235
764	call_pending ();	1236	call_pending (EV_A);
765	}	1237	}
766	while (!ev_loop_done);	1238	while (activecnt && !loop_done);
767		1239
768	if (ev_loop_done != 2)	1240	if (loop_done != 2)
769	ev_loop_done = 0;	1241	loop_done = 0;
		1242	}
		1243
		1244	void
		1245	ev_unloop (EV_P_ int how)
		1246	{
		1247	loop_done = how;
770	}	1248	}
771		1249
772	/*****************************************************************************/	1250	/*****************************************************************************/
773		1251
774	static void	1252	inline void
775	wlist_add (WL *head, WL elem)	1253	wlist_add (WL *head, WL elem)
776	{	1254	{
777	elem->next = *head;	1255	elem->next = *head;
778	*head = elem;	1256	*head = elem;
779	}	1257	}
780		1258
781	static void	1259	inline void
782	wlist_del (WL *head, WL elem)	1260	wlist_del (WL *head, WL elem)
783	{	1261	{
784	while (*head)	1262	while (*head)
785	{	1263	{
786	if (*head == elem)	1264	if (*head == elem)
…		…
791		1269
792	head = &(*head)->next;	1270	head = &(*head)->next;
793	}	1271	}
794	}	1272	}
795		1273
796	static void	1274	inline void
797	ev_clear_pending (W w)	1275	ev_clear_pending (EV_P_ W w)
798	{	1276	{
799	if (w->pending)	1277	if (w->pending)
800	{	1278	{
801	pendings [w->pending - 1].w = 0;	1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1280	w->pending = 0;
803	}	1281	}
804	}	1282	}
805		1283
806	static void	1284	inline void
807	ev_start (W w, int active)	1285	ev_start (EV_P_ W w, int active)
808	{	1286	{
		1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1289
809	w->active = active;	1290	w->active = active;
		1291	ev_ref (EV_A);
810	}	1292	}
811		1293
812	static void	1294	inline void
813	ev_stop (W w)	1295	ev_stop (EV_P_ W w)
814	{	1296	{
		1297	ev_unref (EV_A);
815	w->active = 0;	1298	w->active = 0;
816	}	1299	}
817		1300
818	/*****************************************************************************/	1301	/*****************************************************************************/
819		1302
820	void	1303	void
821	ev_io_start (struct ev_io *w)	1304	ev_io_start (EV_P_ struct ev_io *w)
822	{	1305	{
823	int fd = w->fd;	1306	int fd = w->fd;
824		1307
825	if (ev_is_active (w))	1308	if (ev_is_active (w))
826	return;	1309	return;
827		1310
828	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
829		1312
830	ev_start ((W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1316
834	fd_change (fd);	1317	fd_change (EV_A_ fd);
835	}	1318	}
836		1319
837	void	1320	void
838	ev_io_stop (struct ev_io *w)	1321	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1322	{
840	ev_clear_pending ((W)w);	1323	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
842	return;	1325	return;
843		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1330	ev_stop (EV_A_ (W)w);
846		1331
847	fd_change (w->fd);	1332	fd_change (EV_A_ w->fd);
848	}	1333	}
849		1334
850	void	1335	void
851	ev_timer_start (struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1337	{
853	if (ev_is_active (w))	1338	if (ev_is_active (w))
854	return;	1339	return;
855		1340
856	w->at += now;	1341	((WT)w)->at += mn_now;
857		1342
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1344
860	ev_start ((W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
862	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
864	}
865		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351	}
		1352
866	void	1353	void
867	ev_timer_stop (struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1355	{
869	ev_clear_pending ((W)w);	1356	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
871	return;	1358	return;
872		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
873	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
874	{	1363	{
875	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
876	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
877	}	1366	}
878		1367
879	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
880		1369
881	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
882	}	1371	}
883		1372
884	void	1373	void
885	ev_timer_again (struct ev_timer *w)	1374	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1375	{
887	if (ev_is_active (w))	1376	if (ev_is_active (w))
888	{	1377	{
889	if (w->repeat)	1378	if (w->repeat)
890	{	1379	{
891	w->at = now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
893	}	1382	}
894	else	1383	else
895	ev_timer_stop (w);	1384	ev_timer_stop (EV_A_ w);
896	}	1385	}
897	else if (w->repeat)	1386	else if (w->repeat)
		1387	{
		1388	w->at = w->repeat;
898	ev_timer_start (w);	1389	ev_timer_start (EV_A_ w);
		1390	}
899	}	1391	}
900		1392
		1393	#if EV_PERIODICS
901	void	1394	void
902	ev_periodic_start (struct ev_periodic *w)	1395	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1396	{
904	if (ev_is_active (w))	1397	if (ev_is_active (w))
905	return;	1398	return;
906		1399
		1400	if (w->reschedule_cb)
		1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1402	else if (w->interval)
		1403	{
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1404	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 */	1405	/* 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;	1406	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1407	}
912		1408
913	ev_start ((W)w, ++periodiccnt);	1409	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1410	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
915	periodics [periodiccnt - 1] = w;	1411	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1412	upheap ((WT *)periodics, periodiccnt - 1);
917	}
918		1413
		1414	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1415	}
		1416
919	void	1417	void
920	ev_periodic_stop (struct ev_periodic *w)	1418	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1419	{
922	ev_clear_pending ((W)w);	1420	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1421	if (!ev_is_active (w))
924	return;	1422	return;
925		1423
		1424	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1425
926	if (w->active < periodiccnt--)	1426	if (((W)w)->active < periodiccnt--)
927	{	1427	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1428	periodics [((W)w)->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1429	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
930	}	1430	}
931		1431
932	ev_stop ((W)w);	1432	ev_stop (EV_A_ (W)w);
933	}	1433	}
934		1434
935	void	1435	void
		1436	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1437	{
		1438	/* TODO: use adjustheap and recalculation */
		1439	ev_periodic_stop (EV_A_ w);
		1440	ev_periodic_start (EV_A_ w);
		1441	}
		1442	#endif
		1443
		1444	void
936	ev_signal_start (struct ev_signal *w)	1445	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1446	{
938	if (ev_is_active (w))	1447	if (ev_is_active (w))
939	return;	1448	return;
940		1449
		1450	ev_start (EV_A_ (W)w, ++idlecnt);
		1451	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1452	idles [idlecnt - 1] = w;
		1453	}
		1454
		1455	void
		1456	ev_idle_stop (EV_P_ struct ev_idle *w)
		1457	{
		1458	ev_clear_pending (EV_A_ (W)w);
		1459	if (!ev_is_active (w))
		1460	return;
		1461
		1462	idles [((W)w)->active - 1] = idles [--idlecnt];
		1463	ev_stop (EV_A_ (W)w);
		1464	}
		1465
		1466	void
		1467	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1468	{
		1469	if (ev_is_active (w))
		1470	return;
		1471
		1472	ev_start (EV_A_ (W)w, ++preparecnt);
		1473	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1474	prepares [preparecnt - 1] = w;
		1475	}
		1476
		1477	void
		1478	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1479	{
		1480	ev_clear_pending (EV_A_ (W)w);
		1481	if (!ev_is_active (w))
		1482	return;
		1483
		1484	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1485	ev_stop (EV_A_ (W)w);
		1486	}
		1487
		1488	void
		1489	ev_check_start (EV_P_ struct ev_check *w)
		1490	{
		1491	if (ev_is_active (w))
		1492	return;
		1493
		1494	ev_start (EV_A_ (W)w, ++checkcnt);
		1495	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1496	checks [checkcnt - 1] = w;
		1497	}
		1498
		1499	void
		1500	ev_check_stop (EV_P_ struct ev_check *w)
		1501	{
		1502	ev_clear_pending (EV_A_ (W)w);
		1503	if (!ev_is_active (w))
		1504	return;
		1505
		1506	checks [((W)w)->active - 1] = checks [--checkcnt];
		1507	ev_stop (EV_A_ (W)w);
		1508	}
		1509
		1510	#ifndef SA_RESTART
		1511	# define SA_RESTART 0
		1512	#endif
		1513
		1514	void
		1515	ev_signal_start (EV_P_ struct ev_signal *w)
		1516	{
		1517	#if EV_MULTIPLICITY
		1518	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1519	#endif
		1520	if (ev_is_active (w))
		1521	return;
		1522
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1523	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1524
943	ev_start ((W)w, 1);	1525	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1526	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1527	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1528
947	if (!w->next)	1529	if (!((WL)w)->next)
948	{	1530	{
		1531	#if _WIN32
		1532	signal (w->signum, sighandler);
		1533	#else
949	struct sigaction sa;	1534	struct sigaction sa;
950	sa.sa_handler = sighandler;	1535	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1536	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1537	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1538	sigaction (w->signum, &sa, 0);
		1539	#endif
954	}	1540	}
955	}	1541	}
956		1542
957	void	1543	void
958	ev_signal_stop (struct ev_signal *w)	1544	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1545	{
960	ev_clear_pending ((W)w);	1546	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1547	if (!ev_is_active (w))
962	return;	1548	return;
963		1549
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1551	ev_stop (EV_A_ (W)w);
966		1552
967	if (!signals [w->signum - 1].head)	1553	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1554	signal (w->signum, SIG_DFL);
969	}	1555	}
970		1556
971	void	1557	void
972	ev_idle_start (struct ev_idle *w)	1558	ev_child_start (EV_P_ struct ev_child *w)
973	{	1559	{
		1560	#if EV_MULTIPLICITY
		1561	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1562	#endif
974	if (ev_is_active (w))	1563	if (ev_is_active (w))
975	return;	1564	return;
976		1565
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);	1566	ev_start (EV_A_ (W)w, 1);
1044	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1567	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045	}	1568	}
1046		1569
1047	void	1570	void
1048	ev_child_stop (struct ev_child *w)	1571	ev_child_stop (EV_P_ struct ev_child *w)
1049	{	1572	{
1050	ev_clear_pending ((W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1051	if (ev_is_active (w))	1574	if (!ev_is_active (w))
1052	return;	1575	return;
1053		1576
1054	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1577	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1578	ev_stop (EV_A_ (W)w);
1056	}	1579	}
1057		1580
1058	/*****************************************************************************/	1581	/*****************************************************************************/
1059		1582
1060	struct ev_once	1583	struct ev_once
…		…
1064	void (*cb)(int revents, void *arg);	1587	void (*cb)(int revents, void *arg);
1065	void *arg;	1588	void *arg;
1066	};	1589	};
1067		1590
1068	static void	1591	static void
1069	once_cb (struct ev_once *once, int revents)	1592	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1593	{
1071	void (*cb)(int revents, void *arg) = once->cb;	1594	void (*cb)(int revents, void *arg) = once->cb;
1072	void *arg = once->arg;	1595	void *arg = once->arg;
1073		1596
1074	ev_io_stop (&once->io);	1597	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1598	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1599	ev_free (once);
1077		1600
1078	cb (revents, arg);	1601	cb (revents, arg);
1079	}	1602	}
1080		1603
1081	static void	1604	static void
1082	once_cb_io (struct ev_io *w, int revents)	1605	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1606	{
1084	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1607	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085	}	1608	}
1086		1609
1087	static void	1610	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1611	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1612	{
1090	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1613	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091	}	1614	}
1092		1615
1093	void	1616	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1617	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095	{	1618	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1619	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1097		1620
1098	if (!once)	1621	if (!once)
1099	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1622	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1100	else	1623	else
1101	{	1624	{
1102	once->cb = cb;	1625	once->cb = cb;
1103	once->arg = arg;	1626	once->arg = arg;
1104		1627
1105	ev_watcher_init (&once->io, once_cb_io);	1628	ev_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1629	if (fd >= 0)
1107	{	1630	{
1108	ev_io_set (&once->io, fd, events);	1631	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1632	ev_io_start (EV_A_ &once->io);
1110	}	1633	}
1111		1634
1112	ev_watcher_init (&once->to, once_cb_to);	1635	ev_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1636	if (timeout >= 0.)
1114	{	1637	{
1115	ev_timer_set (&once->to, timeout, 0.);	1638	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1639	ev_timer_start (EV_A_ &once->to);
1117	}	1640	}
1118	}	1641	}
1119	}	1642	}
1120		1643
1121	/*****************************************************************************/	1644	#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	}	1645	}
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	1646	#endif
1177		1647
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

Diff Legend

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