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

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 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
59	#endif	101	#endif
60		102
61	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
63	#endif	109	#endif
64		110
65	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
67	#endif	113	#endif
…		…
73	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
74	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
75	#endif	121	#endif
76		122
77	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
78		130
79	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
80	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
82	#endif	134	#endif
83		135
84	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
85	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
86	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
87	#endif	143	#endif
88		144
89	/**/	145	/**/
90		146
91	#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) */
92	#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) */
93	#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 */
94	/#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 */
95		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
96	#include "ev.h"	155	# include "ev.h"
		156	#endif
97		157
98	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	160	# define inline inline
101	#else	161	#else
…		…
107	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
108		168
109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
111		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
112	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
115		178
116	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
117	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
118	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
119		272
120	static int have_monotonic; /* runtime */	273	static int default_loop;
121		274
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		276
126	/*****************************************************************************/	277	/*****************************************************************************/
127		278
128	ev_tstamp	279	ev_tstamp
129	ev_time (void)	280	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	290	#endif
140	}	291	}
141		292
142	static ev_tstamp	293	inline ev_tstamp
143	get_clock (void)	294	get_clock (void)
144	{	295	{
145	#if EV_USE_MONOTONIC	296	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	297	if (expect_true (have_monotonic))
147	{	298	{
…		…
152	#endif	303	#endif
153		304
154	return ev_time ();	305	return ev_time ();
155	}	306	}
156		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
158		317
159	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
161	{ \	320	{ \
162	int newcnt = cur; \	321	int newcnt = cur; \
163	do \	322	do \
164	{ \	323	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	325	} \
167	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
168	\	327	\
169	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
170	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	330	cur = newcnt; \
172	}	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;
173		343
174	/*****************************************************************************/	344	/*****************************************************************************/
175
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185		345
186	static void	346	static void
187	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
188	{	348	{
189	while (count--)	349	while (count--)
…		…
194		354
195	++base;	355	++base;
196	}	356	}
197	}	357	}
198		358
199	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
200	{	361	{
201	W w;	362	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		363
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void
209	event (W w, int events)
210	{
211	if (w->pending)	364	if (w_->pending)
212	{	365	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
214	return;	367	return;
215	}	368	}
216		369
217	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	374	}
222		375
223	static void	376	static void
224	queue_events (W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	378	{
226	int i;	379	int i;
227		380
228	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
230	}	383	}
231		384
232	static void	385	inline void
233	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
234	{	387	{
235	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	389	struct ev_io *w;
237		390
238	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	392	{
240	int ev = w->events & events;	393	int ev = w->events & revents;
241		394
242	if (ev)	395	if (ev)
243	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
244	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
245	}	404	}
246		405
247	/*****************************************************************************/	406	/*****************************************************************************/
248		407
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	408	static void
253	fd_reify (void)	409	fd_reify (EV_P)
254	{	410	{
255	int i;	411	int i;
256		412
257	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
258	{	414	{
…		…
260	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	417	struct ev_io *w;
262		418
263	int events = 0;	419	int events = 0;
264		420
265	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	422	events \|= w->events;
267		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
268	anfd->reify = 0;	433	anfd->reify = 0;
269		434
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	436	anfd->events = events;
274	}
275	}	437	}
276		438
277	fdchangecnt = 0;	439	fdchangecnt = 0;
278	}	440	}
279		441
280	static void	442	static void
281	fd_change (int fd)	443	fd_change (EV_P_ int fd)
282	{	444	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
284	return;	446	return;
285		447
286	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
287		449
288	++fdchangecnt;	450	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
290	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
291	}	453	}
292		454
293	static void	455	static void
294	fd_kill (int fd)	456	fd_kill (EV_P_ int fd)
295	{	457	{
296	struct ev_io *w;	458	struct ev_io *w;
297		459
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
300	{	461	{
301	ev_io_stop (w);	462	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	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
304	}	475	}
305		476
306	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
307	static void	478	static void
308	fd_ebadf (void)	479	fd_ebadf (EV_P)
309	{	480	{
310	int fd;	481	int fd;
311		482
312	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	484	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	486	fd_kill (EV_A_ fd);
316	}	487	}
317		488
318	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	490	static void
320	fd_enomem (void)	491	fd_enomem (EV_P)
321	{	492	{
322	int fd = anfdmax;	493	int fd;
323		494
324	while (fd--)	495	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	496	if (anfds [fd].events)
326	{	497	{
327	close (fd);
328	fd_kill (fd);	498	fd_kill (EV_A_ fd);
329	return;	499	return;
330	}	500	}
331	}	501	}
332		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	}
		516	}
		517
333	/*****************************************************************************/	518	/*****************************************************************************/
334		519
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	520	static void
342	upheap (WT *timers, int k)	521	upheap (WT *heap, int k)
343	{	522	{
344	WT w = timers [k];	523	WT w = heap [k];
345		524
346	while (k && timers [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
347	{	526	{
348	timers [k] = timers [k >> 1];	527	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
350	k >>= 1;	529	k >>= 1;
351	}	530	}
352		531
353	timers [k] = w;	532	heap [k] = w;
354	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
355		534
356	}	535	}
357		536
358	static void	537	static void
359	downheap (WT *timers, int N, int k)	538	downheap (WT *heap, int N, int k)
360	{	539	{
361	WT w = timers [k];	540	WT w = heap [k];
362		541
363	while (k < (N >> 1))	542	while (k < (N >> 1))
364	{	543	{
365	int j = k << 1;	544	int j = k << 1;
366		545
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	547	++j;
369		548
370	if (w->at <= timers [j]->at)	549	if (w->at <= heap [j]->at)
371	break;	550	break;
372		551
373	timers [k] = timers [j];	552	heap [k] = heap [j];
374	timers [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
375	k = j;	554	k = j;
376	}	555	}
377		556
378	timers [k] = w;	557	heap [k] = w;
379	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);
380	}	566	}
381		567
382	/*****************************************************************************/	568	/*****************************************************************************/
383		569
384	typedef struct	570	typedef struct
385	{	571	{
386	struct ev_signal *head;	572	WL head;
387	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
388	} ANSIG;	574	} ANSIG;
389		575
390	static ANSIG *signals;	576	static ANSIG *signals;
391	static int signalmax;	577	static int signalmax;
…		…
407	}	593	}
408		594
409	static void	595	static void
410	sighandler (int signum)	596	sighandler (int signum)
411	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
412	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
413		603
414	if (!gotsig)	604	if (!gotsig)
415	{	605	{
		606	int old_errno = errno;
416	gotsig = 1;	607	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
418	}	610	}
419	}	611	}
420		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
421	static void	633	static void
422	sigcb (struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	635	{
424	struct ev_signal *w;
425	int signum;	636	int signum;
426		637
427	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	639	gotsig = 0;
429		640
430	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
432	{	643	ev_feed_signal_event (EV_A_ signum + 1);
433	signals [signum].gotsig = 0;
434
435	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);
437	}
438	}	644	}
439		645
440	static void	646	inline void
441	siginit (void)	647	fd_intern (int fd)
442	{	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	653	fcntl (fd, F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445
446	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	654	fcntl (fd, F_SETFL, O_NONBLOCK);
448	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]);
449		663
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	667	}
453		668
454	/*****************************************************************************/	669	/*****************************************************************************/
455		670
456	static struct ev_idle **idles;
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466
467	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
468	static struct ev_signal childev;	675	static struct ev_signal childev;
469		676
470	#ifndef WCONTINUED	677	#ifndef WCONTINUED
471	# define WCONTINUED 0	678	# define WCONTINUED 0
472	#endif	679	#endif
473		680
474	static void	681	static void
475	childcb (struct ev_signal *sw, int revents)	682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	683	{
477	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	{
478	int pid, status;	699	int pid, status;
479		700
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	702	{
482	if (w->pid == pid \|\| !w->pid)	703	/* make sure we are called again until all childs have been reaped */
483	{	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	705
485	event ((W)w, EV_CHILD);	706	child_reap (EV_A_ sw, pid, pid, status);
486	}	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
487	}	709	}
		710
		711	#endif
488		712
489	/*****************************************************************************/	713	/*****************************************************************************/
490		714
491	#if EV_USE_KQUEUE	715	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	716	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	735	ev_version_minor (void)
512	{	736	{
513	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
514	}	738	}
515		739
516	/* return true if we are running with elevated privileges and ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	741	static int
518	enable_secure ()	742	enable_secure (void)
519	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
520	return getuid () != geteuid ()	747	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
		749	#endif
522	}	750	}
523		751
524	int ev_init (int methods)	752	unsigned int
		753	ev_method (EV_P)
525	{	754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
526	if (!ev_method)	761	if (!method)
527	{	762	{
528	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
529	{	764	{
530	struct timespec ts;	765	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	767	have_monotonic = 1;
533	}	768	}
534	#endif	769	#endif
535		770
536	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
537	now = get_clock ();	772	mn_now = get_clock ();
538	now_floor = now;	773	now_floor = mn_now;
539	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
540		775
541	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
542	return 0;
543
544	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		778
		779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
550	ev_method = 0;	782	method = 0;
551	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
553	#endif	785	#endif
554	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
556	#endif	788	#endif
557	#if EV_USE_POLL	789	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
559	#endif	791	#endif
560	#if EV_USE_SELECT	792	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
562	#endif	794	#endif
563		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
564	if (ev_method)	915	if (ev_method (EV_A))
565	{	916	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	917	siginit (EV_A);
568		918
		919	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
		921	ev_set_priority (&childev, EV_MAXPRI);
570	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
571	}	925	}
		926	else
		927	default_loop = 0;
572	}	928	}
573		929
574	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;
575	}	963	}
576		964
577	/*****************************************************************************/	965	/*****************************************************************************/
578		966
579	void
580	ev_fork_prepare (void)
581	{
582	/* nop */
583	}
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif
598
599	ev_io_stop (&sigev);
600	close (sigpipe [0]);
601	close (sigpipe [1]);
602	pipe (sigpipe);
603	siginit ();
604	}
605
606	/*****************************************************************************/
607
608	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
609	call_pending (void)	980	call_pending (EV_P)
610	{	981	{
611	int pri;	982	int pri;
612		983
613	for (pri = NUMPRI; pri--; )	984	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	985	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		988
618	if (p->w)	989	if (p->w)
619	{	990	{
620	p->w->pending = 0;	991	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
622	}	993	}
623	}	994	}
624	}	995	}
625		996
626	static void	997	static void
627	timers_reify (void)	998	timers_reify (EV_P)
628	{	999	{
629	while (timercnt && timers [0]->at <= now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1001	{
631	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)));
632		1005
633	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
634	if (w->repeat)	1007	if (w->repeat)
635	{	1008	{
636	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
637	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
638	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
639	}	1016	}
640	else	1017	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1019
643	event ((W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1021	}
645	}	1022	}
646		1023
		1024	#if EV_PERIODICS
647	static void	1025	static void
648	periodics_reify (void)	1026	periodics_reify (EV_P)
649	{	1027	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1029	{
652	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
653		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
654	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
655	if (w->interval)	1035	if (w->reschedule_cb)
656	{	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	{
657	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;
658	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));
659	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1046	}
661	else	1047	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1049
664	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1051	}
666	}	1052	}
667		1053
668	static void	1054	static void
669	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
670	{	1056	{
671	int i;	1057	int i;
672		1058
673	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
675	{	1061	{
676	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
677		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1066	else if (w->interval)
679	{
680	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;
681
682	if (fabs (diff) >= 1e-4)
683	{
684	ev_periodic_stop (w);
685	ev_periodic_start (w);
686
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}
689	}
690	}	1068	}
691	}
692		1069
693	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
694	time_update_monotonic (void)	1077	time_update_monotonic (EV_P)
695	{	1078	{
696	now = get_clock ();	1079	mn_now = get_clock ();
697		1080
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1082	{
700	ev_now = now + diff;	1083	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1084	return 0;
702	}	1085	}
703	else	1086	else
704	{	1087	{
705	now_floor = now;	1088	now_floor = mn_now;
706	ev_now = ev_time ();	1089	ev_rt_now = ev_time ();
707	return 1;	1090	return 1;
708	}	1091	}
709	}	1092	}
710		1093
711	static void	1094	static void
712	time_update (void)	1095	time_update (EV_P)
713	{	1096	{
714	int i;	1097	int i;
715		1098
716	#if EV_USE_MONOTONIC	1099	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1100	if (expect_true (have_monotonic))
718	{	1101	{
719	if (time_update_monotonic ())	1102	if (time_update_monotonic (EV_A))
720	{	1103	{
721	ev_tstamp odiff = diff;	1104	ev_tstamp odiff = rtmn_diff;
722		1105
723	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 */
724	{	1107	{
725	diff = ev_now - now;	1108	rtmn_diff = ev_rt_now - mn_now;
726		1109
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1111	return; /* all is well */
729		1112
730	ev_now = ev_time ();	1113	ev_rt_now = ev_time ();
731	now = get_clock ();	1114	mn_now = get_clock ();
732	now_floor = now;	1115	now_floor = mn_now;
733	}	1116	}
734		1117
		1118	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1119	periodics_reschedule (EV_A);
		1120	# endif
736	/* 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) */
737	}	1123	}
738	}	1124	}
739	else	1125	else
740	#endif	1126	#endif
741	{	1127	{
742	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
743		1129
744	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))
745	{	1131	{
		1132	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
747		1135
748	/* 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 */
749	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1139	}
752		1140
753	now = ev_now;	1141	mn_now = ev_rt_now;
754	}	1142	}
755	}	1143	}
756		1144
757	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
758		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
759	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
760	{	1161	{
761	double block;	1162	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		1164
764	do	1165	do
765	{	1166	{
766	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
768	{	1169	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1171	call_pending (EV_A);
771	}	1172	}
772		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
773	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
774	fd_reify ();	1179	fd_reify (EV_A);
775		1180
776	/* calculate blocking time */	1181	/* calculate blocking time */
777		1182
778	/* 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
779	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1187	time_update_monotonic (EV_A);
783	else	1188	else
784	#endif	1189	#endif
785	{	1190	{
786	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
787	now = ev_now;	1192	mn_now = ev_rt_now;
788	}	1193	}
789		1194
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1196	block = 0.;
792	else	1197	else
793	{	1198	{
794	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
795		1200
796	if (timercnt)	1201	if (timercnt)
797	{	1202	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1204	if (block > to) block = to;
800	}	1205	}
801		1206
		1207	#if EV_PERIODICS
802	if (periodiccnt)	1208	if (periodiccnt)
803	{	1209	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
805	if (block > to) block = to;	1211	if (block > to) block = to;
806	}	1212	}
		1213	#endif
807		1214
808	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
809	}	1216	}
810		1217
811	method_poll (block);	1218	method_poll (EV_A_ block);
812		1219
813	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
814	time_update ();	1221	time_update (EV_A);
815		1222
816	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
819		1228
820	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1232
824	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
825	if (checkcnt)	1234	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1236
828	call_pending ();	1237	call_pending (EV_A);
829	}	1238	}
830	while (!ev_loop_done);	1239	while (activecnt && !loop_done);
831		1240
832	if (ev_loop_done != 2)	1241	if (loop_done != 2)
833	ev_loop_done = 0;	1242	loop_done = 0;
		1243	}
		1244
		1245	void
		1246	ev_unloop (EV_P_ int how)
		1247	{
		1248	loop_done = how;
834	}	1249	}
835		1250
836	/*****************************************************************************/	1251	/*****************************************************************************/
837		1252
838	static void	1253	inline void
839	wlist_add (WL *head, WL elem)	1254	wlist_add (WL *head, WL elem)
840	{	1255	{
841	elem->next = *head;	1256	elem->next = *head;
842	*head = elem;	1257	*head = elem;
843	}	1258	}
844		1259
845	static void	1260	inline void
846	wlist_del (WL *head, WL elem)	1261	wlist_del (WL *head, WL elem)
847	{	1262	{
848	while (*head)	1263	while (*head)
849	{	1264	{
850	if (*head == elem)	1265	if (*head == elem)
…		…
855		1270
856	head = &(*head)->next;	1271	head = &(*head)->next;
857	}	1272	}
858	}	1273	}
859		1274
860	static void	1275	inline void
861	ev_clear_pending (W w)	1276	ev_clear_pending (EV_P_ W w)
862	{	1277	{
863	if (w->pending)	1278	if (w->pending)
864	{	1279	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1280	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1281	w->pending = 0;
867	}	1282	}
868	}	1283	}
869		1284
870	static void	1285	inline void
871	ev_start (W w, int active)	1286	ev_start (EV_P_ W w, int active)
872	{	1287	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1288	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1289	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1290
876	w->active = active;	1291	w->active = active;
		1292	ev_ref (EV_A);
877	}	1293	}
878		1294
879	static void	1295	inline void
880	ev_stop (W w)	1296	ev_stop (EV_P_ W w)
881	{	1297	{
		1298	ev_unref (EV_A);
882	w->active = 0;	1299	w->active = 0;
883	}	1300	}
884		1301
885	/*****************************************************************************/	1302	/*****************************************************************************/
886		1303
887	void	1304	void
888	ev_io_start (struct ev_io *w)	1305	ev_io_start (EV_P_ struct ev_io *w)
889	{	1306	{
890	int fd = w->fd;	1307	int fd = w->fd;
891		1308
892	if (ev_is_active (w))	1309	if (ev_is_active (w))
893	return;	1310	return;
894		1311
895	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
896		1313
897	ev_start ((W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1317
901	fd_change (fd);	1318	fd_change (EV_A_ fd);
902	}	1319	}
903		1320
904	void	1321	void
905	ev_io_stop (struct ev_io *w)	1322	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1323	{
907	ev_clear_pending ((W)w);	1324	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
909	return;	1326	return;
910		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
913		1332
914	fd_change (w->fd);	1333	fd_change (EV_A_ w->fd);
915	}	1334	}
916		1335
917	void	1336	void
918	ev_timer_start (struct ev_timer *w)	1337	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1338	{
920	if (ev_is_active (w))	1339	if (ev_is_active (w))
921	return;	1340	return;
922		1341
923	w->at += now;	1342	((WT)w)->at += mn_now;
924		1343
925	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.));
926		1345
927	ev_start ((W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
929	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
931	}
932		1350
		1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1352	}
		1353
933	void	1354	void
934	ev_timer_stop (struct ev_timer *w)	1355	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1356	{
936	ev_clear_pending ((W)w);	1357	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1358	if (!ev_is_active (w))
938	return;	1359	return;
939		1360
		1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1362
940	if (w->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
941	{	1364	{
942	timers [w->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1367	}
945		1368
946	w->at = w->repeat;	1369	((WT)w)->at -= mn_now;
947		1370
948	ev_stop ((W)w);	1371	ev_stop (EV_A_ (W)w);
949	}	1372	}
950		1373
951	void	1374	void
952	ev_timer_again (struct ev_timer *w)	1375	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1376	{
954	if (ev_is_active (w))	1377	if (ev_is_active (w))
955	{	1378	{
956	if (w->repeat)	1379	if (w->repeat)
957	{	1380	{
958	w->at = now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1383	}
961	else	1384	else
962	ev_timer_stop (w);	1385	ev_timer_stop (EV_A_ w);
963	}	1386	}
964	else if (w->repeat)	1387	else if (w->repeat)
		1388	{
		1389	w->at = w->repeat;
965	ev_timer_start (w);	1390	ev_timer_start (EV_A_ w);
		1391	}
966	}	1392	}
967		1393
		1394	#if EV_PERIODICS
968	void	1395	void
969	ev_periodic_start (struct ev_periodic *w)	1396	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1397	{
971	if (ev_is_active (w))	1398	if (ev_is_active (w))
972	return;	1399	return;
973		1400
		1401	if (w->reschedule_cb)
		1402	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1403	else if (w->interval)
		1404	{
974	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.));
975
976	/* 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 */
977	if (w->interval)
978	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	}
979		1409
980	ev_start ((W)w, ++periodiccnt);	1410	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1411	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
982	periodics [periodiccnt - 1] = w;	1412	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1413	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1414
		1415	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1416	}
		1417
986	void	1418	void
987	ev_periodic_stop (struct ev_periodic *w)	1419	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1420	{
989	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1422	if (!ev_is_active (w))
991	return;	1423	return;
992		1424
		1425	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1426
993	if (w->active < periodiccnt--)	1427	if (((W)w)->active < periodiccnt--)
994	{	1428	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1429	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1430	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1431	}
998		1432
999	ev_stop ((W)w);	1433	ev_stop (EV_A_ (W)w);
1000	}	1434	}
1001		1435
1002	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
1003	ev_signal_start (struct ev_signal *w)	1446	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1447	{
1005	if (ev_is_active (w))	1448	if (ev_is_active (w))
1006	return;	1449	return;
1007		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
1008	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));
1009		1525
1010	ev_start ((W)w, 1);	1526	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1527	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1528	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1529
1014	if (!w->next)	1530	if (!((WL)w)->next)
1015	{	1531	{
		1532	#if _WIN32
		1533	signal (w->signum, sighandler);
		1534	#else
1016	struct sigaction sa;	1535	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1536	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1537	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1538	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1539	sigaction (w->signum, &sa, 0);
		1540	#endif
1021	}	1541	}
1022	}	1542	}
1023		1543
1024	void	1544	void
1025	ev_signal_stop (struct ev_signal *w)	1545	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1546	{
1027	ev_clear_pending ((W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1548	if (!ev_is_active (w))
1029	return;	1549	return;
1030		1550
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1552	ev_stop (EV_A_ (W)w);
1033		1553
1034	if (!signals [w->signum - 1].head)	1554	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1555	signal (w->signum, SIG_DFL);
1036	}	1556	}
1037		1557
1038	void	1558	void
1039	ev_idle_start (struct ev_idle *w)	1559	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1560	{
		1561	#if EV_MULTIPLICITY
		1562	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1563	#endif
1041	if (ev_is_active (w))	1564	if (ev_is_active (w))
1042	return;	1565	return;
1043		1566
1044	ev_start ((W)w, ++idlecnt);
1045	array_needsize (idles, idlemax, idlecnt, );
1046	idles [idlecnt - 1] = w;
1047	}
1048
1049	void
1050	ev_idle_stop (struct ev_idle *w)
1051	{
1052	ev_clear_pending ((W)w);
1053	if (ev_is_active (w))
1054	return;
1055
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);	1567	ev_start (EV_A_ (W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1568	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}	1569	}
1113		1570
1114	void	1571	void
1115	ev_child_stop (struct ev_child *w)	1572	ev_child_stop (EV_P_ struct ev_child *w)
1116	{	1573	{
1117	ev_clear_pending ((W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1118	if (ev_is_active (w))	1575	if (!ev_is_active (w))
1119	return;	1576	return;
1120		1577
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1578	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1579	ev_stop (EV_A_ (W)w);
1123	}	1580	}
1124		1581
1125	/*****************************************************************************/	1582	/*****************************************************************************/
1126		1583
1127	struct ev_once	1584	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1588	void (cb)(int revents, void arg);
1132	void *arg;	1589	void *arg;
1133	};	1590	};
1134		1591
1135	static void	1592	static void
1136	once_cb (struct ev_once *once, int revents)	1593	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1594	{
1138	void (cb)(int revents, void arg) = once->cb;	1595	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1596	void *arg = once->arg;
1140		1597
1141	ev_io_stop (&once->io);	1598	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1599	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1600	ev_free (once);
1144		1601
1145	cb (revents, arg);	1602	cb (revents, arg);
1146	}	1603	}
1147		1604
1148	static void	1605	static void
1149	once_cb_io (struct ev_io *w, int revents)	1606	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1607	{
1151	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);
1152	}	1609	}
1153		1610
1154	static void	1611	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1612	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1613	{
1157	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);
1158	}	1615	}
1159		1616
1160	void	1617	void
1161	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)
1162	{	1619	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1620	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1164		1621
1165	if (!once)	1622	if (!once)
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1623	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1167	else	1624	else
1168	{	1625	{
1169	once->cb = cb;	1626	once->cb = cb;
1170	once->arg = arg;	1627	once->arg = arg;
1171		1628
1172	ev_watcher_init (&once->io, once_cb_io);	1629	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1630	if (fd >= 0)
1174	{	1631	{
1175	ev_io_set (&once->io, fd, events);	1632	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1633	ev_io_start (EV_A_ &once->io);
1177	}	1634	}
1178		1635
1179	ev_watcher_init (&once->to, once_cb_to);	1636	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1637	if (timeout >= 0.)
1181	{	1638	{
1182	ev_timer_set (&once->to, timeout, 0.);	1639	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1640	ev_timer_start (EV_A_ &once->to);
1184	}	1641	}
1185	}	1642	}
1186	}	1643	}
1187		1644
1188	/*****************************************************************************/	1645	#ifdef __cplusplus
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}	1646	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif	1647	#endif
1244		1648
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}
1265
1266	#endif
1267
1268
1269
1270

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Comparing libev/ev.c (file contents): Revision 1.44 by root, Fri Nov 2 20:59:14 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 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC