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

Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	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_watcher_list *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 = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)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	{
…		…
265	int events = 0;	447	int events = 0;
266		448
267	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)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	backend_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	while ((w = (struct ev_io *)anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
301	{	489	{
302	ev_io_stop (w);	490	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
304	}	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
305	}	503	}
306		504
307	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
308	static void	506	static void
309	fd_ebadf (void)	507	fd_ebadf (EV_P)
310	{	508	{
311	int fd;	509	int fd;
312		510
313	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	512	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
316	fd_kill (fd);	514	fd_kill (EV_A_ fd);
317	}	515	}
318		516
319	/* 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 */
320	static void	518	static void
321	fd_enomem (void)	519	fd_enomem (EV_P)
322	{	520	{
323	int fd = anfdmax;	521	int fd;
324		522
325	while (fd--)	523	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	524	if (anfds [fd].events)
327	{	525	{
328	close (fd);
329	fd_kill (fd);	526	fd_kill (EV_A_ fd);
330	return;	527	return;
331	}	528	}
332	}	529	}
333		530
		531	/* usually called after fork if backend 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
334	/*****************************************************************************/	546	/*****************************************************************************/
335		547
336	static struct ev_timer **timers;
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void	548	static void
343	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
344	{	550	{
345	WT w = timers [k];	551	WT w = heap [k];
346		552
347	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
348	{	554	{
349	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
351	k >>= 1;	557	k >>= 1;
352	}	558	}
353		559
354	timers [k] = w;	560	heap [k] = w;
355	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
356		562
357	}	563	}
358		564
359	static void	565	static void
360	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
361	{	567	{
362	WT w = timers [k];	568	WT w = heap [k];
363		569
364	while (k < (N >> 1))	570	while (k < (N >> 1))
365	{	571	{
366	int j = k << 1;	572	int j = k << 1;
367		573
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	575	++j;
370		576
371	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
372	break;	578	break;
373		579
374	timers [k] = timers [j];	580	heap [k] = heap [j];
375	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
376	k = j;	582	k = j;
377	}	583	}
378		584
379	timers [k] = w;	585	heap [k] = w;
380	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);
381	}	594	}
382		595
383	/*****************************************************************************/	596	/*****************************************************************************/
384		597
385	typedef struct	598	typedef struct
386	{	599	{
387	struct ev_watcher_list *head;	600	WL head;
388	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
389	} ANSIG;	602	} ANSIG;
390		603
391	static ANSIG *signals;	604	static ANSIG *signals;
392	static int signalmax;	605	static int signalmax;
…		…
408	}	621	}
409		622
410	static void	623	static void
411	sighandler (int signum)	624	sighandler (int signum)
412	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
413	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
414		631
415	if (!gotsig)	632	if (!gotsig)
416	{	633	{
417	int old_errno = errno;	634	int old_errno = errno;
…		…
419	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
420	errno = old_errno;	637	errno = old_errno;
421	}	638	}
422	}	639	}
423		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
424	static void	661	static void
425	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
426	{	663	{
427	struct ev_watcher_list *w;
428	int signum;	664	int signum;
429		665
430	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
431	gotsig = 0;	667	gotsig = 0;
432		668
433	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
434	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
435	{	671	ev_feed_signal_event (EV_A_ signum + 1);
436	signals [signum].gotsig = 0;
437
438	for (w = signals [signum].head; w; w = w->next)
439	event ((W)w, EV_SIGNAL);
440	}
441	}	672	}
442		673
443	static void	674	static void
444	siginit (void)	675	fd_intern (int fd)
445	{	676	{
446	#ifndef WIN32	677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	fcntl (fd, F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449
450	/* rather than sort out wether we really need nb, set it */
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif	683	#endif
		684	}
		685
		686	static void
		687	siginit (EV_P)
		688	{
		689	fd_intern (sigpipe [0]);
		690	fd_intern (sigpipe [1]);
454		691
455	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
457	}	695	}
458		696
459	/*****************************************************************************/	697	/*****************************************************************************/
460		698
461	static struct ev_idle **idles;
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471
472	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
473	static struct ev_signal childev;	703	static struct ev_signal childev;
474
475	#ifndef WIN32
476		704
477	#ifndef WCONTINUED	705	#ifndef WCONTINUED
478	# define WCONTINUED 0	706	# define WCONTINUED 0
479	#endif	707	#endif
480		708
481	static void	709	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483	{	711	{
484	struct ev_child *w;	712	struct ev_child *w;
485		713
486	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
487	if (w->pid == pid \|\| !w->pid)	715	if (w->pid == pid \|\| !w->pid)
488	{	716	{
489	w->priority = sw->priority; /* need to do it now */	717	ev_priority (w) = ev_priority (sw); /* need to do it now */
490	w->rpid = pid;	718	w->rpid = pid;
491	w->rstatus = status;	719	w->rstatus = status;
492	event ((W)w, EV_CHILD);	720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
493	}	721	}
494	}	722	}
495		723
496	static void	724	static void
497	childcb (struct ev_signal *sw, int revents)	725	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	726	{
499	int pid, status;	727	int pid, status;
500		728
501	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
502	{	730	{
503	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
		732	/* we need to do it this way so that the callback gets called before we continue */
504	event ((W)sw, EV_SIGNAL);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
505		734
506	child_reap (sw, pid, pid, status);	735	child_reap (EV_A_ sw, pid, pid, status);
507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
508	}	737	}
509	}	738	}
510		739
511	#endif	740	#endif
512		741
513	/*****************************************************************************/	742	/*****************************************************************************/
514		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
515	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
516	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
517	#endif	749	#endif
518	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
519	# include "ev_epoll.c"	751	# include "ev_epoll.c"
…		…
537	return EV_VERSION_MINOR;	769	return EV_VERSION_MINOR;
538	}	770	}
539		771
540	/* return true if we are running with elevated privileges and should ignore env variables */	772	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	773	static int
542	enable_secure ()	774	enable_secure (void)
543	{	775	{
544	#ifdef WIN32	776	#ifdef _WIN32
545	return 0;	777	return 0;
546	#else	778	#else
547	return getuid () != geteuid ()	779	return getuid () != geteuid ()
548	\|\| getgid () != getegid ();	780	\|\| getgid () != getegid ();
549	#endif	781	#endif
550	}	782	}
551		783
552	int ev_init (int methods)	784	unsigned int
		785	ev_supported_backends (void)
553	{	786	{
554	if (!ev_method)	787	unsigned int flags = 0;
		788
		789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
		800	{
		801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
555	{	826	{
556	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
557	{	828	{
558	struct timespec ts;	829	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	831	have_monotonic = 1;
561	}	832	}
562	#endif	833	#endif
563		834
564	ev_now = ev_time ();	835	ev_rt_now = ev_time ();
565	now = get_clock ();	836	mn_now = get_clock ();
566	now_floor = now;	837	now_floor = mn_now;
567	diff = ev_now - now;	838	rtmn_diff = ev_rt_now - mn_now;
568		839
569	if (pipe (sigpipe))	840	if (!(flags & EVFLAG_NOENV)
570	return 0;	841	&& !enable_secure ()
571		842	&& getenv ("LIBEV_FLAGS"))
572	if (methods == EVMETHOD_AUTO)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	843	flags = atoi (getenv ("LIBEV_FLAGS"));
575	else
576	methods = EVMETHOD_ANY;
577		844
578	ev_method = 0;	845	if (!(flags & 0x0000ffffUL))
		846	flags \|= ev_recommended_backends ();
		847
		848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		851	#endif
579	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
581	#endif	854	#endif
582	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
584	#endif	857	#endif
585	#if EV_USE_POLL	858	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
587	#endif	860	#endif
588	#if EV_USE_SELECT	861	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
590	#endif	863	#endif
591		864
592	if (ev_method)	865	ev_init (&sigev, sigcb);
		866	ev_set_priority (&sigev, EV_MAXPRI);
		867	}
		868	}
		869
		870	static void
		871	loop_destroy (EV_P)
		872	{
		873	int i;
		874
		875	#if EV_USE_PORT
		876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		877	#endif
		878	#if EV_USE_KQUEUE
		879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		880	#endif
		881	#if EV_USE_EPOLL
		882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		883	#endif
		884	#if EV_USE_POLL
		885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		886	#endif
		887	#if EV_USE_SELECT
		888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		889	#endif
		890
		891	for (i = NUMPRI; i--; )
		892	array_free (pending, [i]);
		893
		894	/* have to use the microsoft-never-gets-it-right macro */
		895	array_free (fdchange, EMPTY0);
		896	array_free (timer, EMPTY0);
		897	#if EV_PERIODICS
		898	array_free (periodic, EMPTY0);
		899	#endif
		900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
		903
		904	backend = 0;
		905	}
		906
		907	static void
		908	loop_fork (EV_P)
		909	{
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
		916	#if EV_USE_EPOLL
		917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		918	#endif
		919
		920	if (ev_is_active (&sigev))
		921	{
		922	/* default loop */
		923
		924	ev_ref (EV_A);
		925	ev_io_stop (EV_A_ &sigev);
		926	close (sigpipe [0]);
		927	close (sigpipe [1]);
		928
		929	while (pipe (sigpipe))
		930	syserr ("(libev) error creating pipe");
		931
		932	siginit (EV_A);
		933	}
		934
		935	postfork = 0;
		936	}
		937
		938	#if EV_MULTIPLICITY
		939	struct ev_loop *
		940	ev_loop_new (unsigned int flags)
		941	{
		942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		943
		944	memset (loop, 0, sizeof (struct ev_loop));
		945
		946	loop_init (EV_A_ flags);
		947
		948	if (ev_backend (EV_A))
		949	return loop;
		950
		951	return 0;
		952	}
		953
		954	void
		955	ev_loop_destroy (EV_P)
		956	{
		957	loop_destroy (EV_A);
		958	ev_free (loop);
		959	}
		960
		961	void
		962	ev_loop_fork (EV_P)
		963	{
		964	postfork = 1;
		965	}
		966
		967	#endif
		968
		969	#if EV_MULTIPLICITY
		970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
		972	#else
		973	int
		974	ev_default_loop (unsigned int flags)
		975	#endif
		976	{
		977	if (sigpipe [0] == sigpipe [1])
		978	if (pipe (sigpipe))
		979	return 0;
		980
		981	if (!ev_default_loop_ptr)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		985	#else
		986	ev_default_loop_ptr = 1;
		987	#endif
		988
		989	loop_init (EV_A_ flags);
		990
		991	if (ev_backend (EV_A))
593	{	992	{
594	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	993	siginit (EV_A);
597		994
598	#ifndef WIN32	995	#ifndef _WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	998	ev_signal_start (EV_A_ &childev);
		999	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	1000	#endif
603	}	1001	}
		1002	else
		1003	ev_default_loop_ptr = 0;
604	}	1004	}
605		1005
606	return ev_method;	1006	return ev_default_loop_ptr;
		1007	}
		1008
		1009	void
		1010	ev_default_destroy (void)
		1011	{
		1012	#if EV_MULTIPLICITY
		1013	struct ev_loop *loop = ev_default_loop_ptr;
		1014	#endif
		1015
		1016	#ifndef _WIN32
		1017	ev_ref (EV_A); /* child watcher */
		1018	ev_signal_stop (EV_A_ &childev);
		1019	#endif
		1020
		1021	ev_ref (EV_A); /* signal watcher */
		1022	ev_io_stop (EV_A_ &sigev);
		1023
		1024	close (sigpipe [0]); sigpipe [0] = 0;
		1025	close (sigpipe [1]); sigpipe [1] = 0;
		1026
		1027	loop_destroy (EV_A);
		1028	}
		1029
		1030	void
		1031	ev_default_fork (void)
		1032	{
		1033	#if EV_MULTIPLICITY
		1034	struct ev_loop *loop = ev_default_loop_ptr;
		1035	#endif
		1036
		1037	if (backend)
		1038	postfork = 1;
607	}	1039	}
608		1040
609	/*****************************************************************************/	1041	/*****************************************************************************/
610		1042
611	void
612	ev_fork_prepare (void)
613	{
614	/* nop */
615	}
616
617	void
618	ev_fork_parent (void)
619	{
620	/* nop */
621	}
622
623	void
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif
630
631	ev_io_stop (&sigev);
632	close (sigpipe [0]);
633	close (sigpipe [1]);
634	pipe (sigpipe);
635	siginit ();
636	}
637
638	/*****************************************************************************/
639
640	static void	1043	static int
		1044	any_pending (EV_P)
		1045	{
		1046	int pri;
		1047
		1048	for (pri = NUMPRI; pri--; )
		1049	if (pendingcnt [pri])
		1050	return 1;
		1051
		1052	return 0;
		1053	}
		1054
		1055	inline void
641	call_pending (void)	1056	call_pending (EV_P)
642	{	1057	{
643	int pri;	1058	int pri;
644		1059
645	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
647	{	1062	{
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		1064
650	if (p->w)	1065	if (expect_true (p->w))
651	{	1066	{
652	p->w->pending = 0;	1067	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
654	}	1069	}
655	}	1070	}
656	}	1071	}
657		1072
658	static void	1073	inline void
659	timers_reify (void)	1074	timers_reify (EV_P)
660	{	1075	{
661	while (timercnt && timers [0]->at <= now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	1077	{
663	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
		1079
		1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));
664		1081
665	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
666	if (w->repeat)	1083	if (w->repeat)
667	{	1084	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
669	w->at = now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
670	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
671	}	1092	}
672	else	1093	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1095
675	event ((W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
676	}	1097	}
677	}	1098	}
678		1099
679	static void	1100	#if EV_PERIODICS
		1101	inline void
680	periodics_reify (void)	1102	periodics_reify (EV_P)
681	{	1103	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
683	{	1105	{
684	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
685		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
686	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
687	if (w->interval)	1111	if (w->reschedule_cb)
688	{	1112	{
		1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1115	downheap ((WT *)periodics, periodiccnt, 0);
		1116	}
		1117	else if (w->interval)
		1118	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
692	}	1122	}
693	else	1123	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		1125
696	event ((W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
697	}	1127	}
698	}	1128	}
699		1129
700	static void	1130	static void
701	periodics_reschedule (ev_tstamp diff)	1131	periodics_reschedule (EV_P)
702	{	1132	{
703	int i;	1133	int i;
704		1134
705	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
707	{	1137	{
708	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
709		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
710	if (w->interval)	1142	else if (w->interval)
711	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
713
714	if (fabs (diff) >= 1e-4)
715	{
716	ev_periodic_stop (w);
717	ev_periodic_start (w);
718
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}
721	}
722	}	1144	}
723	}
724		1145
725	static int	1146	/* now rebuild the heap */
		1147	for (i = periodiccnt >> 1; i--; )
		1148	downheap ((WT *)periodics, periodiccnt, i);
		1149	}
		1150	#endif
		1151
		1152	inline int
726	time_update_monotonic (void)	1153	time_update_monotonic (EV_P)
727	{	1154	{
728	now = get_clock ();	1155	mn_now = get_clock ();
729		1156
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	1158	{
732	ev_now = now + diff;	1159	ev_rt_now = rtmn_diff + mn_now;
733	return 0;	1160	return 0;
734	}	1161	}
735	else	1162	else
736	{	1163	{
737	now_floor = now;	1164	now_floor = mn_now;
738	ev_now = ev_time ();	1165	ev_rt_now = ev_time ();
739	return 1;	1166	return 1;
740	}	1167	}
741	}	1168	}
742		1169
743	static void	1170	inline void
744	time_update (void)	1171	time_update (EV_P)
745	{	1172	{
746	int i;	1173	int i;
747		1174
748	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	1176	if (expect_true (have_monotonic))
750	{	1177	{
751	if (time_update_monotonic ())	1178	if (time_update_monotonic (EV_A))
752	{	1179	{
753	ev_tstamp odiff = diff;	1180	ev_tstamp odiff = rtmn_diff;
754		1181
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
756	{	1183	{
757	diff = ev_now - now;	1184	rtmn_diff = ev_rt_now - mn_now;
758		1185
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	1187	return; /* all is well */
761		1188
762	ev_now = ev_time ();	1189	ev_rt_now = ev_time ();
763	now = get_clock ();	1190	mn_now = get_clock ();
764	now_floor = now;	1191	now_floor = mn_now;
765	}	1192	}
766		1193
		1194	# if EV_PERIODICS
767	periodics_reschedule (diff - odiff);	1195	periodics_reschedule (EV_A);
		1196	# endif
768	/* no timer adjustment, as the monotonic clock doesn't jump */	1197	/* no timer adjustment, as the monotonic clock doesn't jump */
		1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	1199	}
770	}	1200	}
771	else	1201	else
772	#endif	1202	#endif
773	{	1203	{
774	ev_now = ev_time ();	1204	ev_rt_now = ev_time ();
775		1205
776	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	1207	{
		1208	#if EV_PERIODICS
778	periodics_reschedule (ev_now - now);	1209	periodics_reschedule (EV_A);
		1210	#endif
779		1211
780	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
781	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
783	}	1215	}
784		1216
785	now = ev_now;	1217	mn_now = ev_rt_now;
786	}	1218	}
787	}	1219	}
788		1220
789	int ev_loop_done;	1221	void
		1222	ev_ref (EV_P)
		1223	{
		1224	++activecnt;
		1225	}
790		1226
		1227	void
		1228	ev_unref (EV_P)
		1229	{
		1230	--activecnt;
		1231	}
		1232
		1233	static int loop_done;
		1234
		1235	void
791	void ev_loop (int flags)	1236	ev_loop (EV_P_ int flags)
792	{	1237	{
793	double block;	1238	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
795		1240
796	do	1241	while (activecnt)
797	{	1242	{
798	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
800	{	1245	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	1247	call_pending (EV_A);
803	}	1248	}
804		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
805	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
806	fd_reify ();	1255	fd_reify (EV_A);
807		1256
808	/* calculate blocking time */	1257	/* calculate blocking time */
809		1258
810	/* we only need this for !monotonic clockor timers, but as we basically	1259	/* we only need this for !monotonic clock or timers, but as we basically
811	always have timers, we just calculate it always */	1260	always have timers, we just calculate it always */
812	#if EV_USE_MONOTONIC	1261	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	1262	if (expect_true (have_monotonic))
814	time_update_monotonic ();	1263	time_update_monotonic (EV_A);
815	else	1264	else
816	#endif	1265	#endif
817	{	1266	{
818	ev_now = ev_time ();	1267	ev_rt_now = ev_time ();
819	now = ev_now;	1268	mn_now = ev_rt_now;
820	}	1269	}
821		1270
822	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
823	block = 0.;	1272	block = 0.;
824	else	1273	else
825	{	1274	{
826	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
827		1276
828	if (timercnt)	1277	if (timercnt)
829	{	1278	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
831	if (block > to) block = to;	1280	if (block > to) block = to;
832	}	1281	}
833		1282
		1283	#if EV_PERIODICS
834	if (periodiccnt)	1284	if (periodiccnt)
835	{	1285	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
837	if (block > to) block = to;	1287	if (block > to) block = to;
838	}	1288	}
		1289	#endif
839		1290
840	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
841	}	1292	}
842		1293
843	method_poll (block);	1294	backend_poll (EV_A_ block);
844		1295
845	/* update ev_now, do magic */	1296	/* update ev_rt_now, do magic */
846	time_update ();	1297	time_update (EV_A);
847		1298
848	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
850	periodics_reify (); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
851		1304
852	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
853	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1308
856	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
857	if (checkcnt)	1310	if (expect_false (checkcnt))
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1312
860	call_pending ();	1313	call_pending (EV_A);
861	}
862	while (!ev_loop_done);
863		1314
		1315	if (expect_false (loop_done))
		1316	break;
		1317	}
		1318
864	if (ev_loop_done != 2)	1319	if (loop_done != 2)
865	ev_loop_done = 0;	1320	loop_done = 0;
		1321	}
		1322
		1323	void
		1324	ev_unloop (EV_P_ int how)
		1325	{
		1326	loop_done = how;
866	}	1327	}
867		1328
868	/*****************************************************************************/	1329	/*****************************************************************************/
869		1330
870	static void	1331	inline void
871	wlist_add (WL *head, WL elem)	1332	wlist_add (WL *head, WL elem)
872	{	1333	{
873	elem->next = *head;	1334	elem->next = *head;
874	*head = elem;	1335	*head = elem;
875	}	1336	}
876		1337
877	static void	1338	inline void
878	wlist_del (WL *head, WL elem)	1339	wlist_del (WL *head, WL elem)
879	{	1340	{
880	while (*head)	1341	while (*head)
881	{	1342	{
882	if (*head == elem)	1343	if (*head == elem)
…		…
887		1348
888	head = &(*head)->next;	1349	head = &(*head)->next;
889	}	1350	}
890	}	1351	}
891		1352
892	static void	1353	inline void
893	ev_clear_pending (W w)	1354	ev_clear_pending (EV_P_ W w)
894	{	1355	{
895	if (w->pending)	1356	if (w->pending)
896	{	1357	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1358	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1359	w->pending = 0;
899	}	1360	}
900	}	1361	}
901		1362
902	static void	1363	inline void
903	ev_start (W w, int active)	1364	ev_start (EV_P_ W w, int active)
904	{	1365	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1366	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1367	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1368
908	w->active = active;	1369	w->active = active;
		1370	ev_ref (EV_A);
909	}	1371	}
910		1372
911	static void	1373	inline void
912	ev_stop (W w)	1374	ev_stop (EV_P_ W w)
913	{	1375	{
		1376	ev_unref (EV_A);
914	w->active = 0;	1377	w->active = 0;
915	}	1378	}
916		1379
917	/*****************************************************************************/	1380	/*****************************************************************************/
918		1381
919	void	1382	void
920	ev_io_start (struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
921	{	1384	{
922	int fd = w->fd;	1385	int fd = w->fd;
923		1386
924	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
925	return;	1388	return;
926		1389
927	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
928		1391
929	ev_start ((W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1395
933	fd_change (fd);	1396	fd_change (EV_A_ fd);
934	}	1397	}
935		1398
936	void	1399	void
937	ev_io_stop (struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
938	{	1401	{
939	ev_clear_pending ((W)w);	1402	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
941	return;	1404	return;
942		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1407
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1409	ev_stop (EV_A_ (W)w);
945		1410
946	fd_change (w->fd);	1411	fd_change (EV_A_ w->fd);
947	}	1412	}
948		1413
949	void	1414	void
950	ev_timer_start (struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
951	{	1416	{
952	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
953	return;	1418	return;
954		1419
955	w->at += now;	1420	((WT)w)->at += mn_now;
956		1421
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1423
959	ev_start ((W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
961	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
963	}
964		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1430	}
		1431
965	void	1432	void
966	ev_timer_stop (struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
967	{	1434	{
968	ev_clear_pending ((W)w);	1435	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
970	return;	1437	return;
971		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
972	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
973	{	1442	{
974	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976	}	1445	}
977		1446
978	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
979		1448
980	ev_stop ((W)w);	1449	ev_stop (EV_A_ (W)w);
981	}	1450	}
982		1451
983	void	1452	void
984	ev_timer_again (struct ev_timer *w)	1453	ev_timer_again (EV_P_ struct ev_timer *w)
985	{	1454	{
986	if (ev_is_active (w))	1455	if (ev_is_active (w))
987	{	1456	{
988	if (w->repeat)	1457	if (w->repeat)
989	{	1458	{
990	w->at = now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1461	}
993	else	1462	else
994	ev_timer_stop (w);	1463	ev_timer_stop (EV_A_ w);
995	}	1464	}
996	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
997	ev_timer_start (w);	1468	ev_timer_start (EV_A_ w);
		1469	}
998	}	1470	}
999		1471
		1472	#if EV_PERIODICS
1000	void	1473	void
1001	ev_periodic_start (struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1002	{	1475	{
1003	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1004	return;	1477	return;
1005		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1486	}
1011		1487
1012	ev_start ((W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1014	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1494	}
		1495
1018	void	1496	void
1019	ev_periodic_stop (struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020	{	1498	{
1021	ev_clear_pending ((W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1023	return;	1501	return;
1024		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
1025	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1026	{	1506	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029	}	1509	}
1030		1510
1031	ev_stop ((W)w);	1511	ev_stop (EV_A_ (W)w);
		1512	}
		1513
		1514	void
		1515	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1516	{
		1517	/* TODO: use adjustheap and recalculation */
		1518	ev_periodic_stop (EV_A_ w);
		1519	ev_periodic_start (EV_A_ w);
		1520	}
		1521	#endif
		1522
		1523	void
		1524	ev_idle_start (EV_P_ struct ev_idle *w)
		1525	{
		1526	if (expect_false (ev_is_active (w)))
		1527	return;
		1528
		1529	ev_start (EV_A_ (W)w, ++idlecnt);
		1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1531	idles [idlecnt - 1] = w;
		1532	}
		1533
		1534	void
		1535	ev_idle_stop (EV_P_ struct ev_idle *w)
		1536	{
		1537	ev_clear_pending (EV_A_ (W)w);
		1538	if (expect_false (!ev_is_active (w)))
		1539	return;
		1540
		1541	idles [((W)w)->active - 1] = idles [--idlecnt];
		1542	ev_stop (EV_A_ (W)w);
		1543	}
		1544
		1545	void
		1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1547	{
		1548	if (expect_false (ev_is_active (w)))
		1549	return;
		1550
		1551	ev_start (EV_A_ (W)w, ++preparecnt);
		1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1553	prepares [preparecnt - 1] = w;
		1554	}
		1555
		1556	void
		1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1558	{
		1559	ev_clear_pending (EV_A_ (W)w);
		1560	if (expect_false (!ev_is_active (w)))
		1561	return;
		1562
		1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1564	ev_stop (EV_A_ (W)w);
		1565	}
		1566
		1567	void
		1568	ev_check_start (EV_P_ struct ev_check *w)
		1569	{
		1570	if (expect_false (ev_is_active (w)))
		1571	return;
		1572
		1573	ev_start (EV_A_ (W)w, ++checkcnt);
		1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1575	checks [checkcnt - 1] = w;
		1576	}
		1577
		1578	void
		1579	ev_check_stop (EV_P_ struct ev_check *w)
		1580	{
		1581	ev_clear_pending (EV_A_ (W)w);
		1582	if (expect_false (!ev_is_active (w)))
		1583	return;
		1584
		1585	checks [((W)w)->active - 1] = checks [--checkcnt];
		1586	ev_stop (EV_A_ (W)w);
1032	}	1587	}
1033		1588
1034	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1590	# define SA_RESTART 0
1036	#endif	1591	#endif
1037		1592
1038	void	1593	void
1039	ev_signal_start (struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1040	{	1595	{
		1596	#if EV_MULTIPLICITY
		1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1598	#endif
1041	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1042	return;	1600	return;
1043		1601
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1603
1046	ev_start ((W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1607
1050	if (!w->next)	1608	if (!((WL)w)->next)
1051	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
1052	struct sigaction sa;	1613	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1616	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
1057	}	1619	}
1058	}	1620	}
1059		1621
1060	void	1622	void
1061	ev_signal_stop (struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1062	{	1624	{
1063	ev_clear_pending ((W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1065	return;	1627	return;
1066		1628
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1630	ev_stop (EV_A_ (W)w);
1069		1631
1070	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1072	}	1634	}
1073		1635
1074	void	1636	void
1075	ev_idle_start (struct ev_idle *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1076	{	1638	{
		1639	#if EV_MULTIPLICITY
		1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1641	#endif
1077	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1078	return;	1643	return;
1079		1644
1080	ev_start ((W)w, ++idlecnt);	1645	ev_start (EV_A_ (W)w, 1);
1081	array_needsize (idles, idlemax, idlecnt, );	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082	idles [idlecnt - 1] = w;
1083	}	1647	}
1084		1648
1085	void	1649	void
1086	ev_idle_stop (struct ev_idle *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1087	{	1651	{
1088	ev_clear_pending ((W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1090	return;	1654	return;
1091		1655
1092	idles [w->active - 1] = idles [--idlecnt];
1093	ev_stop ((W)w);
1094	}
1095
1096	void
1097	ev_prepare_start (struct ev_prepare *w)
1098	{
1099	if (ev_is_active (w))
1100	return;
1101
1102	ev_start ((W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );
1104	prepares [preparecnt - 1] = w;
1105	}
1106
1107	void
1108	ev_prepare_stop (struct ev_prepare *w)
1109	{
1110	ev_clear_pending ((W)w);
1111	if (ev_is_active (w))
1112	return;
1113
1114	prepares [w->active - 1] = prepares [--preparecnt];
1115	ev_stop ((W)w);
1116	}
1117
1118	void
1119	ev_check_start (struct ev_check *w)
1120	{
1121	if (ev_is_active (w))
1122	return;
1123
1124	ev_start ((W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );
1126	checks [checkcnt - 1] = w;
1127	}
1128
1129	void
1130	ev_check_stop (struct ev_check *w)
1131	{
1132	ev_clear_pending ((W)w);
1133	if (ev_is_active (w))
1134	return;
1135
1136	checks [w->active - 1] = checks [--checkcnt];
1137	ev_stop ((W)w);
1138	}
1139
1140	void
1141	ev_child_start (struct ev_child *w)
1142	{
1143	if (ev_is_active (w))
1144	return;
1145
1146	ev_start ((W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}
1149
1150	void
1151	ev_child_stop (struct ev_child *w)
1152	{
1153	ev_clear_pending ((W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop ((W)w);	1657	ev_stop (EV_A_ (W)w);
1159	}	1658	}
1160		1659
1161	/*****************************************************************************/	1660	/*****************************************************************************/
1162		1661
1163	struct ev_once	1662	struct ev_once
…		…
1167	void (cb)(int revents, void arg);	1666	void (cb)(int revents, void arg);
1168	void *arg;	1667	void *arg;
1169	};	1668	};
1170		1669
1171	static void	1670	static void
1172	once_cb (struct ev_once *once, int revents)	1671	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	1672	{
1174	void (cb)(int revents, void arg) = once->cb;	1673	void (cb)(int revents, void arg) = once->cb;
1175	void *arg = once->arg;	1674	void *arg = once->arg;
1176		1675
1177	ev_io_stop (&once->io);	1676	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	1678	ev_free (once);
1180		1679
1181	cb (revents, arg);	1680	cb (revents, arg);
1182	}	1681	}
1183		1682
1184	static void	1683	static void
1185	once_cb_io (struct ev_io *w, int revents)	1684	once_cb_io (EV_P_ struct ev_io *w, int revents)
1186	{	1685	{
1187	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1686	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1188	}	1687	}
1189		1688
1190	static void	1689	static void
1191	once_cb_to (struct ev_timer *w, int revents)	1690	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192	{	1691	{
1193	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1692	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1194	}	1693	}
1195		1694
1196	void	1695	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1198	{	1697	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1200		1699
1201	if (!once)	1700	if (expect_false (!once))
		1701	{
1202	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1203	else	1703	return;
1204	{	1704	}
		1705
1205	once->cb = cb;	1706	once->cb = cb;
1206	once->arg = arg;	1707	once->arg = arg;
1207		1708
1208	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1209	if (fd >= 0)	1710	if (fd >= 0)
1210	{	1711	{
1211	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	1713	ev_io_start (EV_A_ &once->io);
1213	}	1714	}
1214		1715
1215	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	1717	if (timeout >= 0.)
1217	{	1718	{
1218	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	1720	ev_timer_start (EV_A_ &once->to);
1220	}
1221	}
1222	}
1223
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{	1721	}
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}	1722	}
1301		1723
		1724	#ifdef __cplusplus
		1725	}
1302	#endif	1726	#endif
1303		1727
1304
1305
1306

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Comparing libev/ev.c (file contents): Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs. Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC