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

Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.129 by root, Fri Nov 23 05:00:44 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
80		158
81	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
89	#endif	167	#endif
90		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
91	/**/	173	/**/
92		174
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
98	#include "ev.h"	183	# include "ev.h"
		184	#endif
99		185
100	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	188	# define inline static inline
103	#else	189	#else
104	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
105	# define inline static	191	# define inline static
106	#endif	192	#endif
107		193
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
110		196
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
114	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
117		206
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
		213	/*****************************************************************************/
		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
		263	typedef struct
		264	{
		265	WL head;
		266	unsigned char events;
		267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
		271	} ANFD;
		272
		273	typedef struct
		274	{
		275	W w;
		276	int events;
		277	} ANPENDING;
		278
		279	#if EV_MULTIPLICITY
		280
		281	struct ev_loop
		282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
		285	#define VAR(name,decl) decl;
		286	#include "ev_vars.h"
		287	#undef VAR
		288	};
		289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
		293
		294	#else
		295
119	ev_tstamp ev_now;	296	ev_tstamp ev_rt_now;
120	int ev_method;	297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
121		300
122	static int have_monotonic; /* runtime */	301	static int ev_default_loop_ptr;
123		302
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	303	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		304
128	/*****************************************************************************/	305	/*****************************************************************************/
129		306
130	ev_tstamp	307	ev_tstamp
131	ev_time (void)	308	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	316	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	317	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	318	#endif
142	}	319	}
143		320
144	static ev_tstamp	321	inline ev_tstamp
145	get_clock (void)	322	get_clock (void)
146	{	323	{
147	#if EV_USE_MONOTONIC	324	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	325	if (expect_true (have_monotonic))
149	{	326	{
…		…
154	#endif	331	#endif
155		332
156	return ev_time ();	333	return ev_time ();
157	}	334	}
158		335
		336	#if EV_MULTIPLICITY
		337	ev_tstamp
		338	ev_now (EV_P)
		339	{
		340	return ev_rt_now;
		341	}
		342	#endif
		343
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
160		345
161	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
163	{ \	348	{ \
164	int newcnt = cur; \	349	int newcnt = cur; \
165	do \	350	do \
166	{ \	351	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	353	} \
169	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
170	\	355	\
171	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	358	cur = newcnt; \
174	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		371
176	/*****************************************************************************/	372	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		373
188	static void	374	static void
189	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
190	{	376	{
191	while (count--)	377	while (count--)
…		…
196		382
197	++base;	383	++base;
198	}	384	}
199	}	385	}
200		386
201	typedef struct	387	void
		388	ev_feed_event (EV_P_ void *w, int revents)
202	{	389	{
203	W w;	390	W w_ = (W)w;
204	int events;
205	} ANPENDING;
206		391
207	static ANPENDING *pendings [NUMPRI];	392	if (expect_false (w_->pending))
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{	393	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
216	return;	395	return;
217	}	396	}
218		397
219	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223	}	402	}
224		403
225	static void	404	static void
226	queue_events (W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	406	{
228	int i;	407	int i;
229		408
230	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
232	}	411	}
233		412
234	static void	413	inline void
235	fd_event (int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
236	{	415	{
237	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	417	struct ev_io *w;
239		418
240	for (w = anfd->head; w; w = w->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	420	{
242	int ev = w->events & events;	421	int ev = w->events & revents;
243		422
244	if (ev)	423	if (ev)
245	event ((W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
246	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
247	}	432	}
248		433
249	/*****************************************************************************/	434	/*****************************************************************************/
250		435
251	static int *fdchanges;	436	inline void
252	static int fdchangemax, fdchangecnt;	437	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	438	{
257	int i;	439	int i;
258		440
259	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
260	{	442	{
…		…
262	ANFD *anfd = anfds + fd;	444	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	445	struct ev_io *w;
264		446
265	int events = 0;	447	int events = 0;
266		448
267	for (w = anfd->head; w; w = w->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	450	events \|= w->events;
269		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
270	anfd->reify = 0;	461	anfd->reify = 0;
271		462
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	463	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	464	anfd->events = events;
276	}
277	}	465	}
278		466
279	fdchangecnt = 0;	467	fdchangecnt = 0;
280	}	468	}
281		469
282	static void	470	static void
283	fd_change (int fd)	471	fd_change (EV_P_ int fd)
284	{	472	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
286	return;	474	return;
287		475
288	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
289		477
290	++fdchangecnt;	478	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
293	}	481	}
294		482
295	static void	483	static void
296	fd_kill (int fd)	484	fd_kill (EV_P_ int fd)
297	{	485	{
298	struct ev_io *w;	486	struct ev_io *w;
299		487
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
302	{	489	{
303	ev_io_stop (w);	490	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
306	}	503	}
307		504
308	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
309	static void	506	static void
310	fd_ebadf (void)	507	fd_ebadf (EV_P)
311	{	508	{
312	int fd;	509	int fd;
313		510
314	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	512	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	514	fd_kill (EV_A_ fd);
318	}	515	}
319		516
320	/* called on ENOMEM in select/poll to kill some fds and retry */	517	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	518	static void
322	fd_enomem (void)	519	fd_enomem (EV_P)
323	{	520	{
324	int fd = anfdmax;	521	int fd;
325		522
326	while (fd--)	523	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	524	if (anfds [fd].events)
328	{	525	{
329	close (fd);
330	fd_kill (fd);	526	fd_kill (EV_A_ fd);
331	return;	527	return;
332	}	528	}
333	}	529	}
334		530
		531	/* usually called after fork if method needs to re-arm all fds from scratch */
		532	static void
		533	fd_rearm_all (EV_P)
		534	{
		535	int fd;
		536
		537	/* this should be highly optimised to not do anything but set a flag */
		538	for (fd = 0; fd < anfdmax; ++fd)
		539	if (anfds [fd].events)
		540	{
		541	anfds [fd].events = 0;
		542	fd_change (EV_A_ fd);
		543	}
		544	}
		545
335	/*****************************************************************************/	546	/*****************************************************************************/
336		547
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	548	static void
344	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
345	{	550	{
346	WT w = timers [k];	551	WT w = heap [k];
347		552
348	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
349	{	554	{
350	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
352	k >>= 1;	557	k >>= 1;
353	}	558	}
354		559
355	timers [k] = w;	560	heap [k] = w;
356	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
357		562
358	}	563	}
359		564
360	static void	565	static void
361	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
362	{	567	{
363	WT w = timers [k];	568	WT w = heap [k];
364		569
365	while (k < (N >> 1))	570	while (k < (N >> 1))
366	{	571	{
367	int j = k << 1;	572	int j = k << 1;
368		573
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	575	++j;
371		576
372	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
373	break;	578	break;
374		579
375	timers [k] = timers [j];	580	heap [k] = heap [j];
376	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
377	k = j;	582	k = j;
378	}	583	}
379		584
380	timers [k] = w;	585	heap [k] = w;
381	timers [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
382	}	594	}
383		595
384	/*****************************************************************************/	596	/*****************************************************************************/
385		597
386	typedef struct	598	typedef struct
387	{	599	{
388	struct ev_signal *head;	600	WL head;
389	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
390	} ANSIG;	602	} ANSIG;
391		603
392	static ANSIG *signals;	604	static ANSIG *signals;
393	static int signalmax;	605	static int signalmax;
…		…
409	}	621	}
410		622
411	static void	623	static void
412	sighandler (int signum)	624	sighandler (int signum)
413	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
414	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
415		631
416	if (!gotsig)	632	if (!gotsig)
417	{	633	{
		634	int old_errno = errno;
418	gotsig = 1;	635	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
		637	errno = old_errno;
420	}	638	}
421	}	639	}
422		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
423	static void	661	static void
424	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	663	{
426	struct ev_signal *w;
427	int signum;	664	int signum;
428		665
429	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	667	gotsig = 0;
431		668
432	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
433	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
434	{	671	ev_feed_signal_event (EV_A_ signum + 1);
435	signals [signum].gotsig = 0;
436
437	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);
439	}
440	}	672	}
441		673
442	static void	674	static void
443	siginit (void)	675	fd_intern (int fd)
444	{	676	{
445	#ifndef WIN32	677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	fcntl (fd, F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448
449	/* rather than sort out wether we really need nb, set it */
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	683	#endif
		684	}
		685
		686	static void
		687	siginit (EV_P)
		688	{
		689	fd_intern (sigpipe [0]);
		690	fd_intern (sigpipe [1]);
453		691
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	695	}
457		696
458	/*****************************************************************************/	697	/*****************************************************************************/
459		698
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
472	static struct ev_signal childev;	703	static struct ev_signal childev;
473
474	#ifndef WIN32
475		704
476	#ifndef WCONTINUED	705	#ifndef WCONTINUED
477	# define WCONTINUED 0	706	# define WCONTINUED 0
478	#endif	707	#endif
479		708
480	static void	709	static void
481	childcb (struct ev_signal *sw, int revents)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	711	{
483	struct ev_child *w;	712	struct ev_child *w;
		713
		714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		715	if (w->pid == pid \|\| !w->pid)
		716	{
		717	ev_priority (w) = ev_priority (sw); /* need to do it now */
		718	w->rpid = pid;
		719	w->rstatus = status;
		720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		721	}
		722	}
		723
		724	static void
		725	childcb (EV_P_ struct ev_signal *sw, int revents)
		726	{
484	int pid, status;	727	int pid, status;
485		728
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	730	{
488	if (w->pid == pid \|\| !w->pid)	731	/* make sure we are called again until all childs have been reaped */
489	{	732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	733
491	w->rstatus = status;	734	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	736	}
494	}	737	}
495		738
496	#endif	739	#endif
497		740
498	/*****************************************************************************/	741	/*****************************************************************************/
499		742
		743	#if EV_USE_PORT
		744	# include "ev_port.c"
		745	#endif
500	#if EV_USE_KQUEUE	746	#if EV_USE_KQUEUE
501	# include "ev_kqueue.c"	747	# include "ev_kqueue.c"
502	#endif	748	#endif
503	#if EV_USE_EPOLL	749	#if EV_USE_EPOLL
504	# include "ev_epoll.c"	750	# include "ev_epoll.c"
…		…
520	ev_version_minor (void)	766	ev_version_minor (void)
521	{	767	{
522	return EV_VERSION_MINOR;	768	return EV_VERSION_MINOR;
523	}	769	}
524		770
525	/* return true if we are running with elevated privileges and ignore env variables */	771	/* return true if we are running with elevated privileges and should ignore env variables */
526	static int	772	static int
527	enable_secure ()	773	enable_secure (void)
528	{	774	{
		775	#ifdef _WIN32
		776	return 0;
		777	#else
529	return getuid () != geteuid ()	778	return getuid () != geteuid ()
530	\|\| getgid () != getegid ();	779	\|\| getgid () != getegid ();
		780	#endif
531	}	781	}
532		782
533	int ev_init (int methods)	783	unsigned int
		784	ev_supported_backends (void)
534	{	785	{
		786	}
		787
		788	unsigned int
		789	ev_recommended_backends (void)
		790	{
		791	unsigned int flags;
		792
		793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		794	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_backend (EV_P)
		804	{
		805	unsigned int flags = ev_recommended_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	static void
		821	loop_init (EV_P_ unsigned int flags)
		822	{
535	if (!ev_method)	823	if (!method)
536	{	824	{
537	#if EV_USE_MONOTONIC	825	#if EV_USE_MONOTONIC
538	{	826	{
539	struct timespec ts;	827	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	828	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	829	have_monotonic = 1;
542	}	830	}
543	#endif	831	#endif
544		832
545	ev_now = ev_time ();	833	ev_rt_now = ev_time ();
546	now = get_clock ();	834	mn_now = get_clock ();
547	now_floor = now;	835	now_floor = mn_now;
548	diff = ev_now - now;	836	rtmn_diff = ev_rt_now - mn_now;
549		837
550	if (pipe (sigpipe))	838	if (!(flags & EVFLAG_NOENV)
551	return 0;	839	&& !enable_secure ()
552		840	&& getenv ("LIBEV_FLAGS"))
553	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	841	flags = atoi (getenv ("LIBEV_FLAGS"));
556	else
557	methods = EVMETHOD_ANY;
558		842
		843	if (!(flags & 0x0000ffffUL))
		844	flags \|= ev_recommended_backends ();
		845
559	ev_method = 0;	846	method = 0;
		847	#if EV_USE_PORT
		848	if (!method && (flags & EVBACKEND_PORT )) method = port_init (EV_A_ flags);
		849	#endif
560	#if EV_USE_KQUEUE	850	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	851	if (!method && (flags & EVBACKEND_KQUEUE)) method = kqueue_init (EV_A_ flags);
562	#endif	852	#endif
563	#if EV_USE_EPOLL	853	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	854	if (!method && (flags & EVBACKEND_EPOLL )) method = epoll_init (EV_A_ flags);
565	#endif	855	#endif
566	#if EV_USE_POLL	856	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	857	if (!method && (flags & EVBACKEND_POLL )) method = poll_init (EV_A_ flags);
568	#endif	858	#endif
569	#if EV_USE_SELECT	859	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	860	if (!method && (flags & EVBACKEND_SELECT)) method = select_init (EV_A_ flags);
571	#endif	861	#endif
572		862
		863	ev_init (&sigev, sigcb);
		864	ev_set_priority (&sigev, EV_MAXPRI);
		865	}
		866	}
		867
		868	static void
		869	loop_destroy (EV_P)
		870	{
		871	int i;
		872
		873	#if EV_USE_PORT
		874	if (method == EVBACKEND_PORT ) port_destroy (EV_A);
		875	#endif
		876	#if EV_USE_KQUEUE
		877	if (method == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		878	#endif
		879	#if EV_USE_EPOLL
		880	if (method == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		881	#endif
		882	#if EV_USE_POLL
		883	if (method == EVBACKEND_POLL ) poll_destroy (EV_A);
		884	#endif
		885	#if EV_USE_SELECT
		886	if (method == EVBACKEND_SELECT) select_destroy (EV_A);
		887	#endif
		888
		889	for (i = NUMPRI; i--; )
		890	array_free (pending, [i]);
		891
		892	/* have to use the microsoft-never-gets-it-right macro */
		893	array_free (fdchange, EMPTY0);
		894	array_free (timer, EMPTY0);
		895	#if EV_PERIODICS
		896	array_free (periodic, EMPTY0);
		897	#endif
		898	array_free (idle, EMPTY0);
		899	array_free (prepare, EMPTY0);
		900	array_free (check, EMPTY0);
		901
		902	method = 0;
		903	}
		904
		905	static void
		906	loop_fork (EV_P)
		907	{
		908	#if EV_USE_PORT
		909	if (method == EVBACKEND_PORT ) port_fork (EV_A);
		910	#endif
		911	#if EV_USE_KQUEUE
		912	if (method == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		913	#endif
		914	#if EV_USE_EPOLL
		915	if (method == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		916	#endif
		917
		918	if (ev_is_active (&sigev))
		919	{
		920	/* default loop */
		921
		922	ev_ref (EV_A);
		923	ev_io_stop (EV_A_ &sigev);
		924	close (sigpipe [0]);
		925	close (sigpipe [1]);
		926
		927	while (pipe (sigpipe))
		928	syserr ("(libev) error creating pipe");
		929
		930	siginit (EV_A);
		931	}
		932
		933	postfork = 0;
		934	}
		935
		936	#if EV_MULTIPLICITY
		937	struct ev_loop *
		938	ev_loop_new (unsigned int flags)
		939	{
		940	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		941
		942	memset (loop, 0, sizeof (struct ev_loop));
		943
		944	loop_init (EV_A_ flags);
		945
		946	if (ev_method (EV_A))
		947	return loop;
		948
		949	return 0;
		950	}
		951
		952	void
		953	ev_loop_destroy (EV_P)
		954	{
		955	loop_destroy (EV_A);
		956	ev_free (loop);
		957	}
		958
		959	void
		960	ev_loop_fork (EV_P)
		961	{
		962	postfork = 1;
		963	}
		964
		965	#endif
		966
		967	#if EV_MULTIPLICITY
		968	struct ev_loop *
		969	ev_default_loop_init (unsigned int flags)
		970	#else
		971	int
		972	ev_default_loop (unsigned int flags)
		973	#endif
		974	{
		975	if (sigpipe [0] == sigpipe [1])
		976	if (pipe (sigpipe))
		977	return 0;
		978
		979	if (!ev_default_loop_ptr)
		980	{
		981	#if EV_MULTIPLICITY
		982	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		983	#else
		984	ev_default_loop_ptr = 1;
		985	#endif
		986
		987	loop_init (EV_A_ flags);
		988
573	if (ev_method)	989	if (ev_method (EV_A))
574	{	990	{
575	ev_watcher_init (&sigev, sigcb);
576	siginit ();	991	siginit (EV_A);
577		992
578	#ifndef WIN32	993	#ifndef _WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	994	ev_signal_init (&childev, childcb, SIGCHLD);
		995	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	996	ev_signal_start (EV_A_ &childev);
		997	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	998	#endif
582	}	999	}
		1000	else
		1001	ev_default_loop_ptr = 0;
583	}	1002	}
584		1003
585	return ev_method;	1004	return ev_default_loop_ptr;
		1005	}
		1006
		1007	void
		1008	ev_default_destroy (void)
		1009	{
		1010	#if EV_MULTIPLICITY
		1011	struct ev_loop *loop = ev_default_loop_ptr;
		1012	#endif
		1013
		1014	#ifndef _WIN32
		1015	ev_ref (EV_A); /* child watcher */
		1016	ev_signal_stop (EV_A_ &childev);
		1017	#endif
		1018
		1019	ev_ref (EV_A); /* signal watcher */
		1020	ev_io_stop (EV_A_ &sigev);
		1021
		1022	close (sigpipe [0]); sigpipe [0] = 0;
		1023	close (sigpipe [1]); sigpipe [1] = 0;
		1024
		1025	loop_destroy (EV_A);
		1026	}
		1027
		1028	void
		1029	ev_default_fork (void)
		1030	{
		1031	#if EV_MULTIPLICITY
		1032	struct ev_loop *loop = ev_default_loop_ptr;
		1033	#endif
		1034
		1035	if (method)
		1036	postfork = 1;
586	}	1037	}
587		1038
588	/*****************************************************************************/	1039	/*****************************************************************************/
589		1040
590	void
591	ev_fork_prepare (void)
592	{
593	/* nop */
594	}
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif
609
610	ev_io_stop (&sigev);
611	close (sigpipe [0]);
612	close (sigpipe [1]);
613	pipe (sigpipe);
614	siginit ();
615	}
616
617	/*****************************************************************************/
618
619	static void	1041	static int
		1042	any_pending (EV_P)
		1043	{
		1044	int pri;
		1045
		1046	for (pri = NUMPRI; pri--; )
		1047	if (pendingcnt [pri])
		1048	return 1;
		1049
		1050	return 0;
		1051	}
		1052
		1053	inline void
620	call_pending (void)	1054	call_pending (EV_P)
621	{	1055	{
622	int pri;	1056	int pri;
623		1057
624	for (pri = NUMPRI; pri--; )	1058	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	1059	while (pendingcnt [pri])
626	{	1060	{
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1061	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		1062
629	if (p->w)	1063	if (expect_true (p->w))
630	{	1064	{
631	p->w->pending = 0;	1065	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	1066	EV_CB_INVOKE (p->w, p->events);
633	}	1067	}
634	}	1068	}
635	}	1069	}
636		1070
637	static void	1071	inline void
638	timers_reify (void)	1072	timers_reify (EV_P)
639	{	1073	{
640	while (timercnt && timers [0]->at <= now)	1074	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	1075	{
642	struct ev_timer *w = timers [0];	1076	struct ev_timer *w = timers [0];
		1077
		1078	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		1079
644	/* first reschedule or stop timer */	1080	/* first reschedule or stop timer */
645	if (w->repeat)	1081	if (w->repeat)
646	{	1082	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1083	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1084
648	w->at = now + w->repeat;	1085	((WT)w)->at += w->repeat;
		1086	if (((WT)w)->at < mn_now)
		1087	((WT)w)->at = mn_now;
		1088
649	downheap ((WT *)timers, timercnt, 0);	1089	downheap ((WT *)timers, timercnt, 0);
650	}	1090	}
651	else	1091	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	1092	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		1093
654	event ((W)w, EV_TIMEOUT);	1094	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
655	}	1095	}
656	}	1096	}
657		1097
658	static void	1098	#if EV_PERIODICS
		1099	inline void
659	periodics_reify (void)	1100	periodics_reify (EV_P)
660	{	1101	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	1102	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
662	{	1103	{
663	struct ev_periodic *w = periodics [0];	1104	struct ev_periodic *w = periodics [0];
664		1105
		1106	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1107
665	/* first reschedule or stop timer */	1108	/* first reschedule or stop timer */
666	if (w->interval)	1109	if (w->reschedule_cb)
667	{	1110	{
		1111	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1112	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1113	downheap ((WT *)periodics, periodiccnt, 0);
		1114	}
		1115	else if (w->interval)
		1116	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1117	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
669	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1118	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	1119	downheap ((WT *)periodics, periodiccnt, 0);
671	}	1120	}
672	else	1121	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	1122	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1123
675	event ((W)w, EV_PERIODIC);	1124	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
676	}	1125	}
677	}	1126	}
678		1127
679	static void	1128	static void
680	periodics_reschedule (ev_tstamp diff)	1129	periodics_reschedule (EV_P)
681	{	1130	{
682	int i;	1131	int i;
683		1132
684	/* adjust periodics after time jump */	1133	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	1134	for (i = 0; i < periodiccnt; ++i)
686	{	1135	{
687	struct ev_periodic *w = periodics [i];	1136	struct ev_periodic *w = periodics [i];
688		1137
		1138	if (w->reschedule_cb)
		1139	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
689	if (w->interval)	1140	else if (w->interval)
690	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1141	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
692
693	if (fabs (diff) >= 1e-4)
694	{
695	ev_periodic_stop (w);
696	ev_periodic_start (w);
697
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}
700	}
701	}	1142	}
702	}
703		1143
704	static int	1144	/* now rebuild the heap */
		1145	for (i = periodiccnt >> 1; i--; )
		1146	downheap ((WT *)periodics, periodiccnt, i);
		1147	}
		1148	#endif
		1149
		1150	inline int
705	time_update_monotonic (void)	1151	time_update_monotonic (EV_P)
706	{	1152	{
707	now = get_clock ();	1153	mn_now = get_clock ();
708		1154
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1155	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	1156	{
711	ev_now = now + diff;	1157	ev_rt_now = rtmn_diff + mn_now;
712	return 0;	1158	return 0;
713	}	1159	}
714	else	1160	else
715	{	1161	{
716	now_floor = now;	1162	now_floor = mn_now;
717	ev_now = ev_time ();	1163	ev_rt_now = ev_time ();
718	return 1;	1164	return 1;
719	}	1165	}
720	}	1166	}
721		1167
722	static void	1168	inline void
723	time_update (void)	1169	time_update (EV_P)
724	{	1170	{
725	int i;	1171	int i;
726		1172
727	#if EV_USE_MONOTONIC	1173	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	1174	if (expect_true (have_monotonic))
729	{	1175	{
730	if (time_update_monotonic ())	1176	if (time_update_monotonic (EV_A))
731	{	1177	{
732	ev_tstamp odiff = diff;	1178	ev_tstamp odiff = rtmn_diff;
733		1179
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1180	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	1181	{
736	diff = ev_now - now;	1182	rtmn_diff = ev_rt_now - mn_now;
737		1183
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1184	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	1185	return; /* all is well */
740		1186
741	ev_now = ev_time ();	1187	ev_rt_now = ev_time ();
742	now = get_clock ();	1188	mn_now = get_clock ();
743	now_floor = now;	1189	now_floor = mn_now;
744	}	1190	}
745		1191
		1192	# if EV_PERIODICS
746	periodics_reschedule (diff - odiff);	1193	periodics_reschedule (EV_A);
		1194	# endif
747	/* no timer adjustment, as the monotonic clock doesn't jump */	1195	/* no timer adjustment, as the monotonic clock doesn't jump */
		1196	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	1197	}
749	}	1198	}
750	else	1199	else
751	#endif	1200	#endif
752	{	1201	{
753	ev_now = ev_time ();	1202	ev_rt_now = ev_time ();
754		1203
755	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1204	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	1205	{
		1206	#if EV_PERIODICS
757	periodics_reschedule (ev_now - now);	1207	periodics_reschedule (EV_A);
		1208	#endif
758		1209
759	/* adjust timers. this is easy, as the offset is the same for all */	1210	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	1211	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	1212	((WT)timers [i])->at += ev_rt_now - mn_now;
762	}	1213	}
763		1214
764	now = ev_now;	1215	mn_now = ev_rt_now;
765	}	1216	}
766	}	1217	}
767		1218
768	int ev_loop_done;	1219	void
		1220	ev_ref (EV_P)
		1221	{
		1222	++activecnt;
		1223	}
769		1224
		1225	void
		1226	ev_unref (EV_P)
		1227	{
		1228	--activecnt;
		1229	}
		1230
		1231	static int loop_done;
		1232
		1233	void
770	void ev_loop (int flags)	1234	ev_loop (EV_P_ int flags)
771	{	1235	{
772	double block;	1236	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1237	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
774		1238
775	do	1239	while (activecnt)
776	{	1240	{
777	/* queue check watchers (and execute them) */	1241	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	1242	if (expect_false (preparecnt))
779	{	1243	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	1245	call_pending (EV_A);
782	}	1246	}
783		1247
		1248	/* we might have forked, so reify kernel state if necessary */
		1249	if (expect_false (postfork))
		1250	loop_fork (EV_A);
		1251
784	/* update fd-related kernel structures */	1252	/* update fd-related kernel structures */
785	fd_reify ();	1253	fd_reify (EV_A);
786		1254
787	/* calculate blocking time */	1255	/* calculate blocking time */
788		1256
789	/* we only need this for !monotonic clockor timers, but as we basically	1257	/* we only need this for !monotonic clock or timers, but as we basically
790	always have timers, we just calculate it always */	1258	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1259	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1260	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1261	time_update_monotonic (EV_A);
794	else	1262	else
795	#endif	1263	#endif
796	{	1264	{
797	ev_now = ev_time ();	1265	ev_rt_now = ev_time ();
798	now = ev_now;	1266	mn_now = ev_rt_now;
799	}	1267	}
800		1268
801	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1269	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
802	block = 0.;	1270	block = 0.;
803	else	1271	else
804	{	1272	{
805	block = MAX_BLOCKTIME;	1273	block = MAX_BLOCKTIME;
806		1274
807	if (timercnt)	1275	if (timercnt)
808	{	1276	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1277	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1278	if (block > to) block = to;
811	}	1279	}
812		1280
		1281	#if EV_PERIODICS
813	if (periodiccnt)	1282	if (periodiccnt)
814	{	1283	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1284	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
816	if (block > to) block = to;	1285	if (block > to) block = to;
817	}	1286	}
		1287	#endif
818		1288
819	if (block < 0.) block = 0.;	1289	if (expect_false (block < 0.)) block = 0.;
820	}	1290	}
821		1291
822	method_poll (block);	1292	method_poll (EV_A_ block);
823		1293
824	/* update ev_now, do magic */	1294	/* update ev_rt_now, do magic */
825	time_update ();	1295	time_update (EV_A);
826		1296
827	/* queue pending timers and reschedule them */	1297	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1298	timers_reify (EV_A); /* relative timers called last */
		1299	#if EV_PERIODICS
829	periodics_reify (); /* absolute timers called first */	1300	periodics_reify (EV_A); /* absolute timers called first */
		1301	#endif
830		1302
831	/* queue idle watchers unless io or timers are pending */	1303	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1304	if (idlecnt && !any_pending (EV_A))
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1305	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1306
835	/* queue check watchers, to be executed first */	1307	/* queue check watchers, to be executed first */
836	if (checkcnt)	1308	if (expect_false (checkcnt))
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1309	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1310
839	call_pending ();	1311	call_pending (EV_A);
840	}
841	while (!ev_loop_done);
842		1312
		1313	if (expect_false (loop_done))
		1314	break;
		1315	}
		1316
843	if (ev_loop_done != 2)	1317	if (loop_done != 2)
844	ev_loop_done = 0;	1318	loop_done = 0;
		1319	}
		1320
		1321	void
		1322	ev_unloop (EV_P_ int how)
		1323	{
		1324	loop_done = how;
845	}	1325	}
846		1326
847	/*****************************************************************************/	1327	/*****************************************************************************/
848		1328
849	static void	1329	inline void
850	wlist_add (WL *head, WL elem)	1330	wlist_add (WL *head, WL elem)
851	{	1331	{
852	elem->next = *head;	1332	elem->next = *head;
853	*head = elem;	1333	*head = elem;
854	}	1334	}
855		1335
856	static void	1336	inline void
857	wlist_del (WL *head, WL elem)	1337	wlist_del (WL *head, WL elem)
858	{	1338	{
859	while (*head)	1339	while (*head)
860	{	1340	{
861	if (*head == elem)	1341	if (*head == elem)
…		…
866		1346
867	head = &(*head)->next;	1347	head = &(*head)->next;
868	}	1348	}
869	}	1349	}
870		1350
871	static void	1351	inline void
872	ev_clear_pending (W w)	1352	ev_clear_pending (EV_P_ W w)
873	{	1353	{
874	if (w->pending)	1354	if (w->pending)
875	{	1355	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1356	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1357	w->pending = 0;
878	}	1358	}
879	}	1359	}
880		1360
881	static void	1361	inline void
882	ev_start (W w, int active)	1362	ev_start (EV_P_ W w, int active)
883	{	1363	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1364	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1365	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1366
887	w->active = active;	1367	w->active = active;
		1368	ev_ref (EV_A);
888	}	1369	}
889		1370
890	static void	1371	inline void
891	ev_stop (W w)	1372	ev_stop (EV_P_ W w)
892	{	1373	{
		1374	ev_unref (EV_A);
893	w->active = 0;	1375	w->active = 0;
894	}	1376	}
895		1377
896	/*****************************************************************************/	1378	/*****************************************************************************/
897		1379
898	void	1380	void
899	ev_io_start (struct ev_io *w)	1381	ev_io_start (EV_P_ struct ev_io *w)
900	{	1382	{
901	int fd = w->fd;	1383	int fd = w->fd;
902		1384
903	if (ev_is_active (w))	1385	if (expect_false (ev_is_active (w)))
904	return;	1386	return;
905		1387
906	assert (("ev_io_start called with negative fd", fd >= 0));	1388	assert (("ev_io_start called with negative fd", fd >= 0));
907		1389
908	ev_start ((W)w, 1);	1390	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1391	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1392	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1393
912	fd_change (fd);	1394	fd_change (EV_A_ fd);
913	}	1395	}
914		1396
915	void	1397	void
916	ev_io_stop (struct ev_io *w)	1398	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1399	{
918	ev_clear_pending ((W)w);	1400	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1401	if (expect_false (!ev_is_active (w)))
920	return;	1402	return;
921		1403
		1404	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1405
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1406	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1407	ev_stop (EV_A_ (W)w);
924		1408
925	fd_change (w->fd);	1409	fd_change (EV_A_ w->fd);
926	}	1410	}
927		1411
928	void	1412	void
929	ev_timer_start (struct ev_timer *w)	1413	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1414	{
931	if (ev_is_active (w))	1415	if (expect_false (ev_is_active (w)))
932	return;	1416	return;
933		1417
934	w->at += now;	1418	((WT)w)->at += mn_now;
935		1419
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1420	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1421
938	ev_start ((W)w, ++timercnt);	1422	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1423	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
940	timers [timercnt - 1] = w;	1424	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1425	upheap ((WT *)timers, timercnt - 1);
942	}
943		1426
		1427	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1428	}
		1429
944	void	1430	void
945	ev_timer_stop (struct ev_timer *w)	1431	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1432	{
947	ev_clear_pending ((W)w);	1433	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1434	if (expect_false (!ev_is_active (w)))
949	return;	1435	return;
950		1436
		1437	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1438
951	if (w->active < timercnt--)	1439	if (expect_true (((W)w)->active < timercnt--))
952	{	1440	{
953	timers [w->active - 1] = timers [timercnt];	1441	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1442	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1443	}
956		1444
957	w->at = w->repeat;	1445	((WT)w)->at -= mn_now;
958		1446
959	ev_stop ((W)w);	1447	ev_stop (EV_A_ (W)w);
960	}	1448	}
961		1449
962	void	1450	void
963	ev_timer_again (struct ev_timer *w)	1451	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1452	{
965	if (ev_is_active (w))	1453	if (ev_is_active (w))
966	{	1454	{
967	if (w->repeat)	1455	if (w->repeat)
968	{	1456	{
969	w->at = now + w->repeat;	1457	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1458	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1459	}
972	else	1460	else
973	ev_timer_stop (w);	1461	ev_timer_stop (EV_A_ w);
974	}	1462	}
975	else if (w->repeat)	1463	else if (w->repeat)
		1464	{
		1465	w->at = w->repeat;
976	ev_timer_start (w);	1466	ev_timer_start (EV_A_ w);
		1467	}
977	}	1468	}
978		1469
		1470	#if EV_PERIODICS
979	void	1471	void
980	ev_periodic_start (struct ev_periodic *w)	1472	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1473	{
982	if (ev_is_active (w))	1474	if (expect_false (ev_is_active (w)))
983	return;	1475	return;
984		1476
		1477	if (w->reschedule_cb)
		1478	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1479	else if (w->interval)
		1480	{
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1481	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1482	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1483	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1484	}
990		1485
991	ev_start ((W)w, ++periodiccnt);	1486	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1487	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
993	periodics [periodiccnt - 1] = w;	1488	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1489	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1490
		1491	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1492	}
		1493
997	void	1494	void
998	ev_periodic_stop (struct ev_periodic *w)	1495	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1496	{
1000	ev_clear_pending ((W)w);	1497	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1498	if (expect_false (!ev_is_active (w)))
1002	return;	1499	return;
1003		1500
		1501	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1502
1004	if (w->active < periodiccnt--)	1503	if (expect_true (((W)w)->active < periodiccnt--))
1005	{	1504	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1505	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1506	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1507	}
1009		1508
1010	ev_stop ((W)w);	1509	ev_stop (EV_A_ (W)w);
1011	}	1510	}
1012		1511
1013	void	1512	void
		1513	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1514	{
		1515	/* TODO: use adjustheap and recalculation */
		1516	ev_periodic_stop (EV_A_ w);
		1517	ev_periodic_start (EV_A_ w);
		1518	}
		1519	#endif
		1520
		1521	void
1014	ev_signal_start (struct ev_signal *w)	1522	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1523	{
1016	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1017	return;	1525	return;
1018		1526
		1527	ev_start (EV_A_ (W)w, ++idlecnt);
		1528	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1529	idles [idlecnt - 1] = w;
		1530	}
		1531
		1532	void
		1533	ev_idle_stop (EV_P_ struct ev_idle *w)
		1534	{
		1535	ev_clear_pending (EV_A_ (W)w);
		1536	if (expect_false (!ev_is_active (w)))
		1537	return;
		1538
		1539	idles [((W)w)->active - 1] = idles [--idlecnt];
		1540	ev_stop (EV_A_ (W)w);
		1541	}
		1542
		1543	void
		1544	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1545	{
		1546	if (expect_false (ev_is_active (w)))
		1547	return;
		1548
		1549	ev_start (EV_A_ (W)w, ++preparecnt);
		1550	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1551	prepares [preparecnt - 1] = w;
		1552	}
		1553
		1554	void
		1555	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1556	{
		1557	ev_clear_pending (EV_A_ (W)w);
		1558	if (expect_false (!ev_is_active (w)))
		1559	return;
		1560
		1561	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1562	ev_stop (EV_A_ (W)w);
		1563	}
		1564
		1565	void
		1566	ev_check_start (EV_P_ struct ev_check *w)
		1567	{
		1568	if (expect_false (ev_is_active (w)))
		1569	return;
		1570
		1571	ev_start (EV_A_ (W)w, ++checkcnt);
		1572	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1573	checks [checkcnt - 1] = w;
		1574	}
		1575
		1576	void
		1577	ev_check_stop (EV_P_ struct ev_check *w)
		1578	{
		1579	ev_clear_pending (EV_A_ (W)w);
		1580	if (expect_false (!ev_is_active (w)))
		1581	return;
		1582
		1583	checks [((W)w)->active - 1] = checks [--checkcnt];
		1584	ev_stop (EV_A_ (W)w);
		1585	}
		1586
		1587	#ifndef SA_RESTART
		1588	# define SA_RESTART 0
		1589	#endif
		1590
		1591	void
		1592	ev_signal_start (EV_P_ struct ev_signal *w)
		1593	{
		1594	#if EV_MULTIPLICITY
		1595	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1596	#endif
		1597	if (expect_false (ev_is_active (w)))
		1598	return;
		1599
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1600	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1601
1021	ev_start ((W)w, 1);	1602	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1603	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1604	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1605
1025	if (!w->next)	1606	if (!((WL)w)->next)
1026	{	1607	{
		1608	#if _WIN32
		1609	signal (w->signum, sighandler);
		1610	#else
1027	struct sigaction sa;	1611	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1612	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1613	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1614	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1615	sigaction (w->signum, &sa, 0);
		1616	#endif
1032	}	1617	}
1033	}	1618	}
1034		1619
1035	void	1620	void
1036	ev_signal_stop (struct ev_signal *w)	1621	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1622	{
1038	ev_clear_pending ((W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1040	return;	1625	return;
1041		1626
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1627	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1628	ev_stop (EV_A_ (W)w);
1044		1629
1045	if (!signals [w->signum - 1].head)	1630	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1631	signal (w->signum, SIG_DFL);
1047	}	1632	}
1048		1633
1049	void	1634	void
1050	ev_idle_start (struct ev_idle *w)	1635	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1636	{
		1637	#if EV_MULTIPLICITY
		1638	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1639	#endif
1052	if (ev_is_active (w))	1640	if (expect_false (ev_is_active (w)))
1053	return;	1641	return;
1054		1642
1055	ev_start ((W)w, ++idlecnt);	1643	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1644	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1645	}
1059		1646
1060	void	1647	void
1061	ev_idle_stop (struct ev_idle *w)	1648	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1649	{
1063	ev_clear_pending ((W)w);	1650	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1651	if (expect_false (!ev_is_active (w)))
1065	return;	1652	return;
1066		1653
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}
1124
1125	void
1126	ev_child_stop (struct ev_child *w)
1127	{
1128	ev_clear_pending ((W)w);
1129	if (ev_is_active (w))
1130	return;
1131
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1654	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1655	ev_stop (EV_A_ (W)w);
1134	}	1656	}
1135		1657
1136	/*****************************************************************************/	1658	/*****************************************************************************/
1137		1659
1138	struct ev_once	1660	struct ev_once
…		…
1142	void (cb)(int revents, void arg);	1664	void (cb)(int revents, void arg);
1143	void *arg;	1665	void *arg;
1144	};	1666	};
1145		1667
1146	static void	1668	static void
1147	once_cb (struct ev_once *once, int revents)	1669	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1670	{
1149	void (cb)(int revents, void arg) = once->cb;	1671	void (cb)(int revents, void arg) = once->cb;
1150	void *arg = once->arg;	1672	void *arg = once->arg;
1151		1673
1152	ev_io_stop (&once->io);	1674	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1675	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1676	ev_free (once);
1155		1677
1156	cb (revents, arg);	1678	cb (revents, arg);
1157	}	1679	}
1158		1680
1159	static void	1681	static void
1160	once_cb_io (struct ev_io *w, int revents)	1682	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1683	{
1162	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1684	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1163	}	1685	}
1164		1686
1165	static void	1687	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1688	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1689	{
1168	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1690	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1169	}	1691	}
1170		1692
1171	void	1693	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1694	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1173	{	1695	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1696	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1175		1697
1176	if (!once)	1698	if (expect_false (!once))
		1699	{
1177	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1700	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1178	else	1701	return;
1179	{	1702	}
		1703
1180	once->cb = cb;	1704	once->cb = cb;
1181	once->arg = arg;	1705	once->arg = arg;
1182		1706
1183	ev_watcher_init (&once->io, once_cb_io);	1707	ev_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1708	if (fd >= 0)
1185	{	1709	{
1186	ev_io_set (&once->io, fd, events);	1710	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1711	ev_io_start (EV_A_ &once->io);
1188	}	1712	}
1189		1713
1190	ev_watcher_init (&once->to, once_cb_to);	1714	ev_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1715	if (timeout >= 0.)
1192	{	1716	{
1193	ev_timer_set (&once->to, timeout, 0.);	1717	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1718	ev_timer_start (EV_A_ &once->to);
1195	}
1196	}
1197	}
1198
1199	/*****************************************************************************/
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{	1719	}
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif
1255
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}	1720	}
1276		1721
		1722	#ifdef __cplusplus
		1723	}
1277	#endif	1724	#endif
1278		1725
1279
1280
1281

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Comparing libev/ev.c (file contents): Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs. Revision 1.129 by root, Fri Nov 23 05:00:44 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.129 by root, Fri Nov 23 05:00:44 2007 UTC