[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 1.108 by root, Mon Nov 12 05:40:55 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 EMPTY /* required for microsofts broken pseudo-c compiler */
		173
112	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
115		177
116	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
117	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
118	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
119		271
120	static int have_monotonic; /* runtime */	272	static int default_loop;
121		273
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		275
126	/*****************************************************************************/	276	/*****************************************************************************/
127		277
128	ev_tstamp	278	ev_tstamp
129	ev_time (void)	279	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	289	#endif
140	}	290	}
141		291
142	static ev_tstamp	292	inline ev_tstamp
143	get_clock (void)	293	get_clock (void)
144	{	294	{
145	#if EV_USE_MONOTONIC	295	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	296	if (expect_true (have_monotonic))
147	{	297	{
…		…
152	#endif	302	#endif
153		303
154	return ev_time ();	304	return ev_time ();
155	}	305	}
156		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
158		316
159	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
161	{ \	319	{ \
162	int newcnt = cur; \	320	int newcnt = cur; \
163	do \	321	do \
164	{ \	322	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	324	} \
167	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
168	\	326	\
169	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
170	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	329	cur = newcnt; \
172	}	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;
173		342
174	/*****************************************************************************/	343	/*****************************************************************************/
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		344
186	static void	345	static void
187	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
188	{	347	{
189	while (count--)	348	while (count--)
…		…
194		353
195	++base;	354	++base;
196	}	355	}
197	}	356	}
198		357
199	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
200	{	360	{
201	W w;	361	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		362
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)	363	if (w_->pending)
212	{	364	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
214	return;	366	return;
215	}	367	}
216		368
217	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	373	}
222		374
223	static void	375	static void
224	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	377	{
226	int i;	378	int i;
227		379
228	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
230	}	382	}
231		383
232	static void	384	inline void
233	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
234	{	386	{
235	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	388	struct ev_io *w;
237		389
238	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	391	{
240	int ev = w->events & events;	392	int ev = w->events & revents;
241		393
242	if (ev)	394	if (ev)
243	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
244	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
245	}	403	}
246		404
247	/*****************************************************************************/	405	/*****************************************************************************/
248		406
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	407	static void
253	fd_reify (void)	408	fd_reify (EV_P)
254	{	409	{
255	int i;	410	int i;
256		411
257	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
258	{	413	{
…		…
260	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	416	struct ev_io *w;
262		417
263	int events = 0;	418	int events = 0;
264		419
265	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	421	events \|= w->events;
267		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
268	anfd->reify = 0;	432	anfd->reify = 0;
269		433
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	435	anfd->events = events;
274	}
275	}	436	}
276		437
277	fdchangecnt = 0;	438	fdchangecnt = 0;
278	}	439	}
279		440
280	static void	441	static void
281	fd_change (int fd)	442	fd_change (EV_P_ int fd)
282	{	443	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
284	return;	445	return;
285		446
286	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
287		448
288	++fdchangecnt;	449	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
290	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
291	}	452	}
292		453
293	static void	454	static void
294	fd_kill (int fd)	455	fd_kill (EV_P_ int fd)
295	{	456	{
296	struct ev_io *w;	457	struct ev_io *w;
297		458
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
300	{	460	{
301	ev_io_stop (w);	461	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	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
304	}	474	}
305		475
306	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
307	static void	477	static void
308	fd_ebadf (void)	478	fd_ebadf (EV_P)
309	{	479	{
310	int fd;	480	int fd;
311		481
312	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	483	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	485	fd_kill (EV_A_ fd);
316	}	486	}
317		487
318	/* called on ENOMEM in select/poll to kill some fds and retry */	488	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	489	static void
320	fd_enomem (void)	490	fd_enomem (EV_P)
321	{	491	{
322	int fd = anfdmax;	492	int fd;
323		493
324	while (fd--)	494	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	495	if (anfds [fd].events)
326	{	496	{
327	close (fd);
328	fd_kill (fd);	497	fd_kill (EV_A_ fd);
329	return;	498	return;
330	}	499	}
331	}	500	}
332		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	}
		515	}
		516
333	/*****************************************************************************/	517	/*****************************************************************************/
334		518
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	519	static void
342	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
343	{	521	{
344	WT w = timers [k];	522	WT w = heap [k];
345		523
346	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
347	{	525	{
348	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
350	k >>= 1;	528	k >>= 1;
351	}	529	}
352		530
353	timers [k] = w;	531	heap [k] = w;
354	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
355		533
356	}	534	}
357		535
358	static void	536	static void
359	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
360	{	538	{
361	WT w = timers [k];	539	WT w = heap [k];
362		540
363	while (k < (N >> 1))	541	while (k < (N >> 1))
364	{	542	{
365	int j = k << 1;	543	int j = k << 1;
366		544
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	546	++j;
369		547
370	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
371	break;	549	break;
372		550
373	timers [k] = timers [j];	551	heap [k] = heap [j];
374	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
375	k = j;	553	k = j;
376	}	554	}
377		555
378	timers [k] = w;	556	heap [k] = w;
379	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);
380	}	565	}
381		566
382	/*****************************************************************************/	567	/*****************************************************************************/
383		568
384	typedef struct	569	typedef struct
385	{	570	{
386	struct ev_signal *head;	571	WL head;
387	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
388	} ANSIG;	573	} ANSIG;
389		574
390	static ANSIG *signals;	575	static ANSIG *signals;
391	static int signalmax;	576	static int signalmax;
…		…
407	}	592	}
408		593
409	static void	594	static void
410	sighandler (int signum)	595	sighandler (int signum)
411	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
412	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
413		602
414	if (!gotsig)	603	if (!gotsig)
415	{	604	{
		605	int old_errno = errno;
416	gotsig = 1;	606	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
418	}	609	}
419	}	610	}
420		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
421	static void	632	static void
422	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	634	{
424	struct ev_signal *w;
425	int signum;	635	int signum;
426		636
427	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	638	gotsig = 0;
429		639
430	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
432	{	642	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	}	643	}
439		644
440	static void	645	inline void
441	siginit (void)	646	fd_intern (int fd)
442	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	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);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
448	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]);
449		662
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	666	}
453		667
454	/*****************************************************************************/	668	/*****************************************************************************/
455		669
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];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
468	static struct ev_signal childev;	674	static struct ev_signal childev;
469		675
470	#ifndef WCONTINUED	676	#ifndef WCONTINUED
471	# define WCONTINUED 0	677	# define WCONTINUED 0
472	#endif	678	#endif
473		679
474	static void	680	static void
475	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	682	{
477	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	{
478	int pid, status;	698	int pid, status;
479		699
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
482	if (w->pid == pid \|\| !w->pid)	702	/* make sure we are called again until all childs have been reaped */
483	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	704
485	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
486	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
487	}	708	}
		709
		710	#endif
488		711
489	/*****************************************************************************/	712	/*****************************************************************************/
490		713
491	#if EV_USE_KQUEUE	714	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	715	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	734	ev_version_minor (void)
512	{	735	{
513	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
514	}	737	}
515		738
516	/* return true if we are running with elevated privileges and ignore env variables */	739	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	740	static int
518	enable_secure ()	741	enable_secure (void)
519	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
520	return getuid () != geteuid ()	746	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
		748	#endif
522	}	749	}
523		750
524	int ev_init (int methods)	751	int
		752	ev_method (EV_P)
525	{	753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ unsigned int flags)
		759	{
526	if (!ev_method)	760	if (!method)
527	{	761	{
528	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
529	{	763	{
530	struct timespec ts;	764	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	766	have_monotonic = 1;
533	}	767	}
534	#endif	768	#endif
535		769
536	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
537	now = get_clock ();	771	mn_now = get_clock ();
538	now_floor = now;	772	now_floor = mn_now;
539	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
540		774
541	if (pipe (sigpipe))	775	if (!(flags & EVMETHOD_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"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		777
		778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
		780
550	ev_method = 0;	781	method = 0;
551	#if EV_USE_KQUEUE	782	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
553	#endif	784	#endif
554	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
556	#endif	787	#endif
557	#if EV_USE_POLL	788	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
559	#endif	790	#endif
560	#if EV_USE_SELECT	791	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
562	#endif	793	#endif
563		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 methods)
		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_ methods);
		913
564	if (ev_method)	914	if (ev_method (EV_A))
565	{	915	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	916	siginit (EV_A);
568		917
		918	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
570	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
571	}	924	}
		925	else
		926	default_loop = 0;
572	}	927	}
573		928
574	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;
575	}	962	}
576		963
577	/*****************************************************************************/	964	/*****************************************************************************/
578		965
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	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
609	call_pending (void)	979	call_pending (EV_P)
610	{	980	{
611	int pri;	981	int pri;
612		982
613	for (pri = NUMPRI; pri--; )	983	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	984	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		987
618	if (p->w)	988	if (p->w)
619	{	989	{
620	p->w->pending = 0;	990	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
622	}	992	}
623	}	993	}
624	}	994	}
625		995
626	static void	996	static void
627	timers_reify (void)	997	timers_reify (EV_P)
628	{	998	{
629	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1000	{
631	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)));
632		1004
633	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
634	if (w->repeat)	1006	if (w->repeat)
635	{	1007	{
636	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
637	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
638	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
639	}	1015	}
640	else	1016	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1018
643	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1020	}
645	}	1021	}
646		1022
		1023	#if EV_PERIODICS
647	static void	1024	static void
648	periodics_reify (void)	1025	periodics_reify (EV_P)
649	{	1026	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1028	{
652	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
653		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
654	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
655	if (w->interval)	1034	if (w->reschedule_cb)
656	{	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	{
657	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;
658	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));
659	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1045	}
661	else	1046	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1048
664	event ((W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1050	}
666	}	1051	}
667		1052
668	static void	1053	static void
669	periodics_reschedule (ev_tstamp diff)	1054	periodics_reschedule (EV_P)
670	{	1055	{
671	int i;	1056	int i;
672		1057
673	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
675	{	1060	{
676	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
677		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1065	else if (w->interval)
679	{
680	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;
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	}	1067	}
691	}
692		1068
693	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
694	time_update_monotonic (void)	1076	time_update_monotonic (EV_P)
695	{	1077	{
696	now = get_clock ();	1078	mn_now = get_clock ();
697		1079
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1081	{
700	ev_now = now + diff;	1082	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1083	return 0;
702	}	1084	}
703	else	1085	else
704	{	1086	{
705	now_floor = now;	1087	now_floor = mn_now;
706	ev_now = ev_time ();	1088	ev_rt_now = ev_time ();
707	return 1;	1089	return 1;
708	}	1090	}
709	}	1091	}
710		1092
711	static void	1093	static void
712	time_update (void)	1094	time_update (EV_P)
713	{	1095	{
714	int i;	1096	int i;
715		1097
716	#if EV_USE_MONOTONIC	1098	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1099	if (expect_true (have_monotonic))
718	{	1100	{
719	if (time_update_monotonic ())	1101	if (time_update_monotonic (EV_A))
720	{	1102	{
721	ev_tstamp odiff = diff;	1103	ev_tstamp odiff = rtmn_diff;
722		1104
723	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 */
724	{	1106	{
725	diff = ev_now - now;	1107	rtmn_diff = ev_rt_now - mn_now;
726		1108
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1110	return; /* all is well */
729		1111
730	ev_now = ev_time ();	1112	ev_rt_now = ev_time ();
731	now = get_clock ();	1113	mn_now = get_clock ();
732	now_floor = now;	1114	now_floor = mn_now;
733	}	1115	}
734		1116
		1117	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1118	periodics_reschedule (EV_A);
		1119	# endif
736	/* 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) */
737	}	1122	}
738	}	1123	}
739	else	1124	else
740	#endif	1125	#endif
741	{	1126	{
742	ev_now = ev_time ();	1127	ev_rt_now = ev_time ();
743		1128
744	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))
745	{	1130	{
		1131	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1132	periodics_reschedule (EV_A);
		1133	#endif
747		1134
748	/* 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 */
749	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1138	}
752		1139
753	now = ev_now;	1140	mn_now = ev_rt_now;
754	}	1141	}
755	}	1142	}
756		1143
757	int ev_loop_done;	1144	void
		1145	ev_ref (EV_P)
		1146	{
		1147	++activecnt;
		1148	}
758		1149
		1150	void
		1151	ev_unref (EV_P)
		1152	{
		1153	--activecnt;
		1154	}
		1155
		1156	static int loop_done;
		1157
		1158	void
759	void ev_loop (int flags)	1159	ev_loop (EV_P_ int flags)
760	{	1160	{
761	double block;	1161	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1162	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		1163
764	do	1164	do
765	{	1165	{
766	/* queue check watchers (and execute them) */	1166	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1167	if (expect_false (preparecnt))
768	{	1168	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1170	call_pending (EV_A);
771	}	1171	}
772		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
773	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
774	fd_reify ();	1178	fd_reify (EV_A);
775		1179
776	/* calculate blocking time */	1180	/* calculate blocking time */
777		1181
778	/* 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
779	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1186	time_update_monotonic (EV_A);
783	else	1187	else
784	#endif	1188	#endif
785	{	1189	{
786	ev_now = ev_time ();	1190	ev_rt_now = ev_time ();
787	now = ev_now;	1191	mn_now = ev_rt_now;
788	}	1192	}
789		1193
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1195	block = 0.;
792	else	1196	else
793	{	1197	{
794	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
795		1199
796	if (timercnt)	1200	if (timercnt)
797	{	1201	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1203	if (block > to) block = to;
800	}	1204	}
801		1205
		1206	#if EV_PERIODICS
802	if (periodiccnt)	1207	if (periodiccnt)
803	{	1208	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
805	if (block > to) block = to;	1210	if (block > to) block = to;
806	}	1211	}
		1212	#endif
807		1213
808	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
809	}	1215	}
810		1216
811	method_poll (block);	1217	method_poll (EV_A_ block);
812		1218
813	/* update ev_now, do magic */	1219	/* update ev_rt_now, do magic */
814	time_update ();	1220	time_update (EV_A);
815		1221
816	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
819		1227
820	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1231
824	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
825	if (checkcnt)	1233	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1235
828	call_pending ();	1236	call_pending (EV_A);
829	}	1237	}
830	while (!ev_loop_done);	1238	while (activecnt && !loop_done);
831		1239
832	if (ev_loop_done != 2)	1240	if (loop_done != 2)
833	ev_loop_done = 0;	1241	loop_done = 0;
		1242	}
		1243
		1244	void
		1245	ev_unloop (EV_P_ int how)
		1246	{
		1247	loop_done = how;
834	}	1248	}
835		1249
836	/*****************************************************************************/	1250	/*****************************************************************************/
837		1251
838	static void	1252	inline void
839	wlist_add (WL *head, WL elem)	1253	wlist_add (WL *head, WL elem)
840	{	1254	{
841	elem->next = *head;	1255	elem->next = *head;
842	*head = elem;	1256	*head = elem;
843	}	1257	}
844		1258
845	static void	1259	inline void
846	wlist_del (WL *head, WL elem)	1260	wlist_del (WL *head, WL elem)
847	{	1261	{
848	while (*head)	1262	while (*head)
849	{	1263	{
850	if (*head == elem)	1264	if (*head == elem)
…		…
855		1269
856	head = &(*head)->next;	1270	head = &(*head)->next;
857	}	1271	}
858	}	1272	}
859		1273
860	static void	1274	inline void
861	ev_clear_pending (W w)	1275	ev_clear_pending (EV_P_ W w)
862	{	1276	{
863	if (w->pending)	1277	if (w->pending)
864	{	1278	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1280	w->pending = 0;
867	}	1281	}
868	}	1282	}
869		1283
870	static void	1284	inline void
871	ev_start (W w, int active)	1285	ev_start (EV_P_ W w, int active)
872	{	1286	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1289
876	w->active = active;	1290	w->active = active;
		1291	ev_ref (EV_A);
877	}	1292	}
878		1293
879	static void	1294	inline void
880	ev_stop (W w)	1295	ev_stop (EV_P_ W w)
881	{	1296	{
		1297	ev_unref (EV_A);
882	w->active = 0;	1298	w->active = 0;
883	}	1299	}
884		1300
885	/*****************************************************************************/	1301	/*****************************************************************************/
886		1302
887	void	1303	void
888	ev_io_start (struct ev_io *w)	1304	ev_io_start (EV_P_ struct ev_io *w)
889	{	1305	{
890	int fd = w->fd;	1306	int fd = w->fd;
891		1307
892	if (ev_is_active (w))	1308	if (ev_is_active (w))
893	return;	1309	return;
894		1310
895	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
896		1312
897	ev_start ((W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1316
901	fd_change (fd);	1317	fd_change (EV_A_ fd);
902	}	1318	}
903		1319
904	void	1320	void
905	ev_io_stop (struct ev_io *w)	1321	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1322	{
907	ev_clear_pending ((W)w);	1323	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
909	return;	1325	return;
910		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1330	ev_stop (EV_A_ (W)w);
913		1331
914	fd_change (w->fd);	1332	fd_change (EV_A_ w->fd);
915	}	1333	}
916		1334
917	void	1335	void
918	ev_timer_start (struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1337	{
920	if (ev_is_active (w))	1338	if (ev_is_active (w))
921	return;	1339	return;
922		1340
923	w->at += now;	1341	((WT)w)->at += mn_now;
924		1342
925	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.));
926		1344
927	ev_start ((W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
929	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
931	}
932		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351	}
		1352
933	void	1353	void
934	ev_timer_stop (struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1355	{
936	ev_clear_pending ((W)w);	1356	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
938	return;	1358	return;
939		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
940	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
941	{	1363	{
942	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1366	}
945		1367
946	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
947		1369
948	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
949	}	1371	}
950		1372
951	void	1373	void
952	ev_timer_again (struct ev_timer *w)	1374	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1375	{
954	if (ev_is_active (w))	1376	if (ev_is_active (w))
955	{	1377	{
956	if (w->repeat)	1378	if (w->repeat)
957	{	1379	{
958	w->at = now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1382	}
961	else	1383	else
962	ev_timer_stop (w);	1384	ev_timer_stop (EV_A_ w);
963	}	1385	}
964	else if (w->repeat)	1386	else if (w->repeat)
965	ev_timer_start (w);	1387	ev_timer_start (EV_A_ w);
966	}	1388	}
967		1389
		1390	#if EV_PERIODICS
968	void	1391	void
969	ev_periodic_start (struct ev_periodic *w)	1392	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1393	{
971	if (ev_is_active (w))	1394	if (ev_is_active (w))
972	return;	1395	return;
973		1396
		1397	if (w->reschedule_cb)
		1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1399	else if (w->interval)
		1400	{
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1401	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 */	1402	/* 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;	1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1404	}
979		1405
980	ev_start ((W)w, ++periodiccnt);	1406	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
982	periodics [periodiccnt - 1] = w;	1408	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1409	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1410
		1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1412	}
		1413
986	void	1414	void
987	ev_periodic_stop (struct ev_periodic *w)	1415	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1416	{
989	ev_clear_pending ((W)w);	1417	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1418	if (!ev_is_active (w))
991	return;	1419	return;
992		1420
		1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1422
993	if (w->active < periodiccnt--)	1423	if (((W)w)->active < periodiccnt--)
994	{	1424	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1427	}
998		1428
999	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
1000	}	1430	}
1001		1431
1002	void	1432	void
		1433	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1434	{
		1435	/* TODO: use adjustheap and recalculation */
		1436	ev_periodic_stop (EV_A_ w);
		1437	ev_periodic_start (EV_A_ w);
		1438	}
		1439	#endif
		1440
		1441	void
1003	ev_signal_start (struct ev_signal *w)	1442	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1443	{
1005	if (ev_is_active (w))	1444	if (ev_is_active (w))
1006	return;	1445	return;
1007		1446
		1447	ev_start (EV_A_ (W)w, ++idlecnt);
		1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1449	idles [idlecnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_idle_stop (EV_P_ struct ev_idle *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (!ev_is_active (w))
		1457	return;
		1458
		1459	idles [((W)w)->active - 1] = idles [--idlecnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	void
		1464	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1465	{
		1466	if (ev_is_active (w))
		1467	return;
		1468
		1469	ev_start (EV_A_ (W)w, ++preparecnt);
		1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1471	prepares [preparecnt - 1] = w;
		1472	}
		1473
		1474	void
		1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1476	{
		1477	ev_clear_pending (EV_A_ (W)w);
		1478	if (!ev_is_active (w))
		1479	return;
		1480
		1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1482	ev_stop (EV_A_ (W)w);
		1483	}
		1484
		1485	void
		1486	ev_check_start (EV_P_ struct ev_check *w)
		1487	{
		1488	if (ev_is_active (w))
		1489	return;
		1490
		1491	ev_start (EV_A_ (W)w, ++checkcnt);
		1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1493	checks [checkcnt - 1] = w;
		1494	}
		1495
		1496	void
		1497	ev_check_stop (EV_P_ struct ev_check *w)
		1498	{
		1499	ev_clear_pending (EV_A_ (W)w);
		1500	if (!ev_is_active (w))
		1501	return;
		1502
		1503	checks [((W)w)->active - 1] = checks [--checkcnt];
		1504	ev_stop (EV_A_ (W)w);
		1505	}
		1506
		1507	#ifndef SA_RESTART
		1508	# define SA_RESTART 0
		1509	#endif
		1510
		1511	void
		1512	ev_signal_start (EV_P_ struct ev_signal *w)
		1513	{
		1514	#if EV_MULTIPLICITY
		1515	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1516	#endif
		1517	if (ev_is_active (w))
		1518	return;
		1519
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1521
1010	ev_start ((W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1525
1014	if (!w->next)	1526	if (!((WL)w)->next)
1015	{	1527	{
		1528	#if _WIN32
		1529	signal (w->signum, sighandler);
		1530	#else
1016	struct sigaction sa;	1531	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1532	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1533	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1535	sigaction (w->signum, &sa, 0);
		1536	#endif
1021	}	1537	}
1022	}	1538	}
1023		1539
1024	void	1540	void
1025	ev_signal_stop (struct ev_signal *w)	1541	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1542	{
1027	ev_clear_pending ((W)w);	1543	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1544	if (!ev_is_active (w))
1029	return;	1545	return;
1030		1546
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1547	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1548	ev_stop (EV_A_ (W)w);
1033		1549
1034	if (!signals [w->signum - 1].head)	1550	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1551	signal (w->signum, SIG_DFL);
1036	}	1552	}
1037		1553
1038	void	1554	void
1039	ev_idle_start (struct ev_idle *w)	1555	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1559	#endif
1041	if (ev_is_active (w))	1560	if (ev_is_active (w))
1042	return;	1561	return;
1043		1562
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);	1563	ev_start (EV_A_ (W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1564	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}	1565	}
1113		1566
1114	void	1567	void
1115	ev_child_stop (struct ev_child *w)	1568	ev_child_stop (EV_P_ struct ev_child *w)
1116	{	1569	{
1117	ev_clear_pending ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
1118	if (ev_is_active (w))	1571	if (!ev_is_active (w))
1119	return;	1572	return;
1120		1573
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
1123	}	1576	}
1124		1577
1125	/*****************************************************************************/	1578	/*****************************************************************************/
1126		1579
1127	struct ev_once	1580	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1584	void (cb)(int revents, void arg);
1132	void *arg;	1585	void *arg;
1133	};	1586	};
1134		1587
1135	static void	1588	static void
1136	once_cb (struct ev_once *once, int revents)	1589	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1590	{
1138	void (cb)(int revents, void arg) = once->cb;	1591	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1592	void *arg = once->arg;
1140		1593
1141	ev_io_stop (&once->io);	1594	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1595	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1596	ev_free (once);
1144		1597
1145	cb (revents, arg);	1598	cb (revents, arg);
1146	}	1599	}
1147		1600
1148	static void	1601	static void
1149	once_cb_io (struct ev_io *w, int revents)	1602	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1603	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1604	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1605	}
1153		1606
1154	static void	1607	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1608	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1609	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1610	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1611	}
1159		1612
1160	void	1613	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1615	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1616	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1164		1617
1165	if (!once)	1618	if (!once)
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1619	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1167	else	1620	else
1168	{	1621	{
1169	once->cb = cb;	1622	once->cb = cb;
1170	once->arg = arg;	1623	once->arg = arg;
1171		1624
1172	ev_watcher_init (&once->io, once_cb_io);	1625	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1626	if (fd >= 0)
1174	{	1627	{
1175	ev_io_set (&once->io, fd, events);	1628	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1629	ev_io_start (EV_A_ &once->io);
1177	}	1630	}
1178		1631
1179	ev_watcher_init (&once->to, once_cb_to);	1632	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1633	if (timeout >= 0.)
1181	{	1634	{
1182	ev_timer_set (&once->to, timeout, 0.);	1635	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1636	ev_timer_start (EV_A_ &once->to);
1184	}	1637	}
1185	}	1638	}
1186	}	1639	}
1187		1640
1188	/*****************************************************************************/	1641	#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	}	1642	}
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	1643	#endif
1244		1644
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 1.108 by root, Mon Nov 12 05:40:55 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 1.108 by root, Mon Nov 12 05:40:55 2007 UTC