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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 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_USEV_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USEV_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, mn_now, diff; /* monotonic clock */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		208
122	static int have_monotonic; /* runtime */	209	#ifdef _WIN32
123		210	# include "ev_win32.c"
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128	static int activecnt; /* number of active events */
129
130	#if EV_USE_SELECT
131	static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132	static int vec_max;
133	#endif
134
135	#if EV_USEV_POLL
136	static struct pollfd *polls;
137	static int pollmax, pollcnt;
138	static int *pollidxs; /* maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141
142	#if EV_USE_EPOLL
143	static int epoll_fd = -1;
144
145	static struct epoll_event *events;
146	static int eventmax;
147	#endif
148
149	#if EV_USE_KQUEUE
150	static int kqueue_fd;
151	static struct kevent *kqueue_changes;
152	static int kqueue_changemax, kqueue_changecnt;
153	static struct kevent *kqueue_events;
154	static int kqueue_eventmax;
155	#endif	211	#endif
156		212
157	/*****************************************************************************/	213	/*****************************************************************************/
158		214
159	inline ev_tstamp	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
		296	ev_tstamp ev_rt_now;
		297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
		300
		301	static int ev_default_loop_ptr;
		302
		303	#endif
		304
		305	/*****************************************************************************/
		306
		307	ev_tstamp
160	ev_time (void)	308	ev_time (void)
161	{	309	{
162	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
163	struct timespec ts;	311	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
183	#endif	331	#endif
184		332
185	return ev_time ();	333	return ev_time ();
186	}	334	}
187		335
		336	#if EV_MULTIPLICITY
188	ev_tstamp	337	ev_tstamp
189	ev_now (EV_P)	338	ev_now (EV_P)
190	{	339	{
191	return rt_now;	340	return ev_rt_now;
192	}	341	}
		342	#endif
193		343
194	#define array_roundsize(base,n) ((n) | 4 & ~3)	344	#define array_roundsize(type,n) (((n) | 4) & ~3)
195		345
196	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
198	{ \	348	{ \
199	int newcnt = cur; \	349	int newcnt = cur; \
200	do \	350	do \
201	{ \	351	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	353	} \
204	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
205	\	355	\
206	base = realloc (base, sizeof (*base) * (newcnt)); \	356	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	358	cur = newcnt; \
209	}	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;
210		371
211	/*****************************************************************************/	372	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		373
223	static void	374	static void
224	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
225	{	376	{
226	while (count--)	377	while (count--)
…		…
231		382
232	++base;	383	++base;
233	}	384	}
234	}	385	}
235		386
236	typedef struct	387	void
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)	388	ev_feed_event (EV_P_ void *w, int revents)
247	{	389	{
248	if (w->pending)	390	W w_ = (W)w;
		391
		392	if (expect_false (w_->pending))
249	{	393	{
250	pendings [ABSPRI (w)][w->pending - 1].events |= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251	return;	395	return;
252	}	396	}
253		397
254	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	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);
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	402	}
259		403
260	static void	404	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	406	{
263	int i;	407	int i;
264		408
265	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
267	}	411	}
268		412
269	static void	413	inline void
270	fd_event (EV_P_ int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
271	{	415	{
272	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	417	struct ev_io *w;
274		418
275	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)
276	{	420	{
277	int ev = w->events & events;	421	int ev = w->events & revents;
278		422
279	if (ev)	423	if (ev)
280	event (EV_A_ (W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
281	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
282	}	432	}
283		433
284	/*****************************************************************************/	434	/*****************************************************************************/
285		435
286	static int *fdchanges;	436	inline void
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	437	fd_reify (EV_P)
291	{	438	{
292	int i;	439	int i;
293		440
294	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
300	int events = 0;	447	int events = 0;
301		448
302	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)
303	events |= w->events;	450	events |= w->events;
304		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
305	anfd->reify = 0;	461	anfd->reify = 0;
306		462
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	464	anfd->events = events;
311	}
312	}	465	}
313		466
314	fdchangecnt = 0;	467	fdchangecnt = 0;
315	}	468	}
316		469
317	static void	470	static void
318	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
319	{	472	{
320	if (anfds [fd].reify || fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
321	return;	474	return;
322		475
323	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
324		477
325	++fdchangecnt;	478	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
328	}	481	}
329		482
330	static void	483	static void
331	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	486	struct ev_io *w;
334		487
335	while ((w = (struct ev_io *)anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
336	{	489	{
337	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	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
340	}	503	}
341		504
342	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
343	static void	506	static void
344	fd_ebadf (EV_P)	507	fd_ebadf (EV_P)
345	{	508	{
346	int fd;	509	int fd;
347		510
348	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	512	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	514	fd_kill (EV_A_ fd);
352	}	515	}
353		516
354	/* 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 */
355	static void	518	static void
356	fd_enomem (EV_P)	519	fd_enomem (EV_P)
357	{	520	{
358	int fd = anfdmax;	521	int fd;
359		522
360	while (fd--)	523	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	524	if (anfds [fd].events)
362	{	525	{
363	close (fd);
364	fd_kill (EV_A_ fd);	526	fd_kill (EV_A_ fd);
365	return;	527	return;
366	}	528	}
367	}	529	}
368		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
369	/*****************************************************************************/	546	/*****************************************************************************/
370		547
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	548	static void
378	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
379	{	550	{
380	WT w = timers [k];	551	WT w = heap [k];
381		552
382	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
383	{	554	{
384	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
386	k >>= 1;	557	k >>= 1;
387	}	558	}
388		559
389	timers [k] = w;	560	heap [k] = w;
390	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
391		562
392	}	563	}
393		564
394	static void	565	static void
395	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
396	{	567	{
397	WT w = timers [k];	568	WT w = heap [k];
398		569
399	while (k < (N >> 1))	570	while (k < (N >> 1))
400	{	571	{
401	int j = k << 1;	572	int j = k << 1;
402		573
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	575	++j;
405		576
406	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
407	break;	578	break;
408		579
409	timers [k] = timers [j];	580	heap [k] = heap [j];
410	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
411	k = j;	582	k = j;
412	}	583	}
413		584
414	timers [k] = w;	585	heap [k] = w;
415	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);
416	}	594	}
417		595
418	/*****************************************************************************/	596	/*****************************************************************************/
419		597
420	typedef struct	598	typedef struct
421	{	599	{
422	struct ev_watcher_list *head;	600	WL head;
423	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
424	} ANSIG;	602	} ANSIG;
425		603
426	static ANSIG *signals;	604	static ANSIG *signals;
427	static int signalmax;	605	static int signalmax;
…		…
443	}	621	}
444		622
445	static void	623	static void
446	sighandler (int signum)	624	sighandler (int signum)
447	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
448	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
449		631
450	if (!gotsig)	632	if (!gotsig)
451	{	633	{
452	int old_errno = errno;	634	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	637	errno = old_errno;
456	}	638	}
457	}	639	}
458		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
459	static void	661	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	663	{
462	struct ev_watcher_list *w;
463	int signum;	664	int signum;
464		665
465	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	667	gotsig = 0;
467		668
468	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
470	{	671	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;	672	}
472		673
473	for (w = signals [signum].head; w; w = w->next)	674	static void
474	event (EV_A_ (W)w, EV_SIGNAL);	675	fd_intern (int fd)
475	}	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
		681	fcntl (fd, F_SETFD, FD_CLOEXEC);
		682	fcntl (fd, F_SETFL, O_NONBLOCK);
		683	#endif
476	}	684	}
477		685
478	static void	686	static void
479	siginit (EV_P)	687	siginit (EV_P)
480	{	688	{
481	#ifndef WIN32	689	fd_intern (sigpipe [0]);
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	fd_intern (sigpipe [1]);
483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485	/* rather than sort out wether we really need nb, set it */
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif
489		691
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	695	}
494		696
495	/*****************************************************************************/	697	/*****************************************************************************/
496		698
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
509	static struct ev_signal childev;	703	static struct ev_signal childev;
510
511	#ifndef WIN32
512		704
513	#ifndef WCONTINUED	705	#ifndef WCONTINUED
514	# define WCONTINUED 0	706	# define WCONTINUED 0
515	#endif	707	#endif
516		708
…		…
520	struct ev_child *w;	712	struct ev_child *w;
521		713
522	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)
523	if (w->pid == pid || !w->pid)	715	if (w->pid == pid || !w->pid)
524	{	716	{
525	w->priority = sw->priority; /* need to do it *now* */	717	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
526	w->rpid = pid;	718	w->rpid = pid;
527	w->rstatus = status;	719	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	721	}
530	}	722	}
531		723
532	static void	724	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	725	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	727	int pid, status;
536		728
537	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538	{	730	{
539	/* 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 */
540	event (EV_A_ (W)sw, EV_SIGNAL);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		734
542	child_reap (EV_A_ sw, pid, pid, status);	735	child_reap (EV_A_ sw, pid, pid, status);
543	child_reap (EV_A_ 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 */
544	}	737	}
545	}	738	}
546		739
547	#endif	740	#endif
548		741
549	/*****************************************************************************/	742	/*****************************************************************************/
550		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
551	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
553	#endif	749	#endif
554	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	751	# include "ev_epoll.c"
556	#endif	752	#endif
557	#if EV_USEV_POLL	753	#if EV_USE_POLL
558	# include "ev_poll.c"	754	# include "ev_poll.c"
559	#endif	755	#endif
560	#if EV_USE_SELECT	756	#if EV_USE_SELECT
561	# include "ev_select.c"	757	# include "ev_select.c"
562	#endif	758	#endif
…		…
575		771
576	/* 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 */
577	static int	773	static int
578	enable_secure (void)	774	enable_secure (void)
579	{	775	{
580	#ifdef WIN32	776	#ifdef _WIN32
581	return 0;	777	return 0;
582	#else	778	#else
583	return getuid () != geteuid ()	779	return getuid () != geteuid ()
584	|| getgid () != getegid ();	780	|| getgid () != getegid ();
585	#endif	781	#endif
586	}	782	}
587		783
588	int	784	unsigned int
589	ev_method (EV_P)	785	ev_supported_backends (void)
590	{	786	{
591	return method;	787	unsigned int flags = 0;
592	}
593		788
594	int	789	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
595	ev_init (EV_P_ int methods)	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)
596	{	800	{
597	if (!method)	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)
598	{	826	{
599	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
600	{	828	{
601	struct timespec ts;	829	struct timespec ts;
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	831	have_monotonic = 1;
604	}	832	}
605	#endif	833	#endif
606		834
607	rt_now = ev_time ();	835	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	836	mn_now = get_clock ();
609	now_floor = mn_now;	837	now_floor = mn_now;
610	diff = rt_now - mn_now;	838	rtmn_diff = ev_rt_now - mn_now;
611		839
612	if (pipe (sigpipe))	840	if (!(flags & EVFLAG_NOENV)
613	return 0;	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
		843	flags = atoi (getenv ("LIBEV_FLAGS"));
614		844
615	if (methods == EVMETHOD_AUTO)	845	if (!(flags & 0x0000ffffUL))
616	if (!enable_secure () && getenv ("LIBmethodS"))	846	flags |= ev_recommended_backends ();
617	methods = atoi (getenv ("LIBmethodS"));
618	else
619	methods = EVMETHOD_ANY;
620		847
621	method = 0;	848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		851	#endif
622	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624	#endif	854	#endif
625	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627	#endif	857	#endif
628	#if EV_USEV_POLL	858	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630	#endif	860	#endif
631	#if EV_USE_SELECT	861	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633	#endif	863	#endif
634		864
635	if (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))
636	{	992	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	993	siginit (EV_A);
640		994
641	#ifndef WIN32	995	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	998	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	999	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	1000	#endif
647	}	1001	}
		1002	else
		1003	ev_default_loop_ptr = 0;
648	}	1004	}
649		1005
650	return 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;
651	}	1039	}
652		1040
653	/*****************************************************************************/	1041	/*****************************************************************************/
654		1042
655	void
656	ev_fork_prepare (void)
657	{
658	/* nop */
659	}
660
661	void
662	ev_fork_parent (void)
663	{
664	/* nop */
665	}
666
667	void
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}
681
682	/*****************************************************************************/
683
684	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
685	call_pending (EV_P)	1056	call_pending (EV_P)
686	{	1057	{
687	int pri;	1058	int pri;
688		1059
689	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
691	{	1062	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1064
694	if (p->w)	1065	if (expect_true (p->w))
695	{	1066	{
696	p->w->pending = 0;	1067	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
698	}	1069	}
699	}	1070	}
700	}	1071	}
701		1072
702	static void	1073	inline void
703	timers_reify (EV_P)	1074	timers_reify (EV_P)
704	{	1075	{
705	while (timercnt && timers [0]->at <= mn_now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1077	{
707	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)));
708		1081
709	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
710	if (w->repeat)	1083	if (w->repeat)
711	{	1084	{
712	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
713	w->at = mn_now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
714	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
715	}	1092	}
716	else	1093	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1095
719	event ((W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1097	}
721	}	1098	}
722		1099
723	static void	1100	#if EV_PERIODICS
		1101	inline void
724	periodics_reify (EV_P)	1102	periodics_reify (EV_P)
725	{	1103	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1105	{
728	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
729		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
730	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
731	if (w->interval)	1111	if (w->reschedule_cb)
732	{	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	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1122	}
737	else	1123	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1125
740	event (EV_A_ (W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1127	}
742	}	1128	}
743		1129
744	static void	1130	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1131	periodics_reschedule (EV_P)
746	{	1132	{
747	int i;	1133	int i;
748		1134
749	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
751	{	1137	{
752	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
753		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1142	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1144	}
		1145
		1146	/* now rebuild the heap */
		1147	for (i = periodiccnt >> 1; i--; )
		1148	downheap ((WT *)periodics, periodiccnt, i);
767	}	1149	}
		1150	#endif
768		1151
769	inline int	1152	inline int
770	time_update_monotonic (EV_P)	1153	time_update_monotonic (EV_P)
771	{	1154	{
772	mn_now = get_clock ();	1155	mn_now = get_clock ();
773		1156
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1158	{
776	rt_now = mn_now + diff;	1159	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1160	return 0;
778	}	1161	}
779	else	1162	else
780	{	1163	{
781	now_floor = mn_now;	1164	now_floor = mn_now;
782	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
783	return 1;	1166	return 1;
784	}	1167	}
785	}	1168	}
786		1169
787	static void	1170	inline void
788	time_update (EV_P)	1171	time_update (EV_P)
789	{	1172	{
790	int i;	1173	int i;
791		1174
792	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1176	if (expect_true (have_monotonic))
794	{	1177	{
795	if (time_update_monotonic (EV_A))	1178	if (time_update_monotonic (EV_A))
796	{	1179	{
797	ev_tstamp odiff = diff;	1180	ev_tstamp odiff = rtmn_diff;
798		1181
799	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 */
800	{	1183	{
801	diff = rt_now - mn_now;	1184	rtmn_diff = ev_rt_now - mn_now;
802		1185
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1187	return; /* all is well */
805		1188
806	rt_now = ev_time ();	1189	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1190	mn_now = get_clock ();
808	now_floor = mn_now;	1191	now_floor = mn_now;
809	}	1192	}
810		1193
		1194	# if EV_PERIODICS
811	periodics_reschedule (EV_A_ diff - odiff);	1195	periodics_reschedule (EV_A);
		1196	# endif
812	/* 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) */
813	}	1199	}
814	}	1200	}
815	else	1201	else
816	#endif	1202	#endif
817	{	1203	{
818	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
819		1205
820	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1207	{
		1208	#if EV_PERIODICS
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1209	periodics_reschedule (EV_A);
		1210	#endif
823		1211
824	/* 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 */
825	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1215	}
828		1216
829	mn_now = rt_now;	1217	mn_now = ev_rt_now;
830	}	1218	}
831	}	1219	}
832		1220
833	void	1221	void
834	ev_ref (EV_P)	1222	ev_ref (EV_P)
…		…
848	ev_loop (EV_P_ int flags)	1236	ev_loop (EV_P_ int flags)
849	{	1237	{
850	double block;	1238	double block;
851	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
852		1240
853	do	1241	while (activecnt)
854	{	1242	{
855	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
856	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
857	{	1245	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1247	call_pending (EV_A);
860	}	1248	}
861		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
862	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1255	fd_reify (EV_A);
864		1256
865	/* calculate blocking time */	1257	/* calculate blocking time */
866		1258
867	/* 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
868	always have timers, we just calculate it always */	1260	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1261	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1262	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1263	time_update_monotonic (EV_A);
872	else	1264	else
873	#endif	1265	#endif
874	{	1266	{
875	rt_now = ev_time ();	1267	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1268	mn_now = ev_rt_now;
877	}	1269	}
878		1270
879	if (flags & EVLOOP_NONBLOCK || idlecnt)	1271	if (flags & EVLOOP_NONBLOCK || idlecnt)
880	block = 0.;	1272	block = 0.;
881	else	1273	else
882	{	1274	{
883	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
884		1276
885	if (timercnt)	1277	if (timercnt)
886	{	1278	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888	if (block > to) block = to;	1280	if (block > to) block = to;
889	}	1281	}
890		1282
		1283	#if EV_PERIODICS
891	if (periodiccnt)	1284	if (periodiccnt)
892	{	1285	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894	if (block > to) block = to;	1287	if (block > to) block = to;
895	}	1288	}
		1289	#endif
896		1290
897	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
898	}	1292	}
899		1293
900	method_poll (EV_A_ block);	1294	backend_poll (EV_A_ block);
901		1295
902	/* update rt_now, do magic */	1296	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1297	time_update (EV_A);
904		1298
905	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
907	periodics_reify (EV_A); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
908		1304
909	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1308
913	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
914	if (checkcnt)	1310	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1312
917	call_pending (EV_A);	1313	call_pending (EV_A);
		1314
		1315	if (expect_false (loop_done))
		1316	break;
918	}	1317	}
919	while (activecnt && !loop_done);
920		1318
921	if (loop_done != 2)	1319	if (loop_done != 2)
922	loop_done = 0;	1320	loop_done = 0;
923	}	1321	}
924		1322
…		…
984	void	1382	void
985	ev_io_start (EV_P_ struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
986	{	1384	{
987	int fd = w->fd;	1385	int fd = w->fd;
988		1386
989	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
990	return;	1388	return;
991		1389
992	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
993		1391
994	ev_start (EV_A_ (W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1395
998	fd_change (EV_A_ fd);	1396	fd_change (EV_A_ fd);
999	}	1397	}
1000		1398
1001	void	1399	void
1002	ev_io_stop (EV_P_ struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
1003	{	1401	{
1004	ev_clear_pending (EV_A_ (W)w);	1402	ev_clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
1006	return;	1404	return;
		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1007		1407
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1409	ev_stop (EV_A_ (W)w);
1010		1410
1011	fd_change (EV_A_ w->fd);	1411	fd_change (EV_A_ w->fd);
1012	}	1412	}
1013		1413
1014	void	1414	void
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1416	{
1017	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
1018	return;	1418	return;
1019		1419
1020	w->at += mn_now;	1420	((WT)w)->at += mn_now;
1021		1421
1022	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.));
1023		1423
1024	ev_start (EV_A_ (W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1430	}
1029		1431
1030	void	1432	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1434	{
1033	ev_clear_pending (EV_A_ (W)w);	1435	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
1035	return;	1437	return;
1036		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
1037	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
1038	{	1442	{
1039	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1445	}
1042		1446
1043	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
1044		1448
1045	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1046	}	1450	}
1047		1451
1048	void	1452	void
…		…
1050	{	1454	{
1051	if (ev_is_active (w))	1455	if (ev_is_active (w))
1052	{	1456	{
1053	if (w->repeat)	1457	if (w->repeat)
1054	{	1458	{
1055	w->at = mn_now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1461	}
1058	else	1462	else
1059	ev_timer_stop (EV_A_ w);	1463	ev_timer_stop (EV_A_ w);
1060	}	1464	}
1061	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1468	ev_timer_start (EV_A_ w);
		1469	}
1063	}	1470	}
1064		1471
		1472	#if EV_PERIODICS
1065	void	1473	void
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1475	{
1068	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1069	return;	1477	return;
1070		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
1071	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.));
1072
1073	/* 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 */
1074	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1486	}
1076		1487
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1494	}
1082		1495
1083	void	1496	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1498	{
1086	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1088	return;	1501	return;
1089		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
1090	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1091	{	1506	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1509	}
1095		1510
		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];
1096	ev_stop (EV_A_ (W)w);	1586	ev_stop (EV_A_ (W)w);
1097	}	1587	}
1098		1588
1099	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1590	# define SA_RESTART 0
1101	#endif	1591	#endif
1102		1592
1103	void	1593	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1595	{
		1596	#if EV_MULTIPLICITY
		1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1598	#endif
1106	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1107	return;	1600	return;
1108		1601
1109	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));
1110		1603
1111	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1607
1115	if (!w->next)	1608	if (!((WL)w)->next)
1116	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
1117	struct sigaction sa;	1613	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
1120	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 */
1121	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
1122	}	1619	}
1123	}	1620	}
1124		1621
1125	void	1622	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1127	{	1624	{
1128	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1130	return;	1627	return;
1131		1628
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1134		1631
1135	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1137	}	1634	}
1138		1635
1139	void	1636	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1638	{
		1639	#if EV_MULTIPLICITY
		1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1641	#endif
1208	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1209	return;	1643	return;
1210		1644
1211	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	1647	}
1214		1648
1215	void	1649	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1217	{	1651	{
1218	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1220	return;	1654	return;
1221		1655
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1224	}	1658	}
…		…
1239	void (*cb)(int revents, void *arg) = once->cb;	1673	void (*cb)(int revents, void *arg) = once->cb;
1240	void *arg = once->arg;	1674	void *arg = once->arg;
1241		1675
1242	ev_io_stop (EV_A_ &once->io);	1676	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1678	ev_free (once);
1245		1679
1246	cb (revents, arg);	1680	cb (revents, arg);
1247	}	1681	}
1248		1682
1249	static void	1683	static void
…		…
1259	}	1693	}
1260		1694
1261	void	1695	void
1262	ev_once (EV_P_ 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)
1263	{	1697	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265		1699
1266	if (!once)	1700	if (expect_false (!once))
		1701	{
1267	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1702	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268	else	1703	return;
1269	{	1704	}
		1705
1270	once->cb = cb;	1706	once->cb = cb;
1271	once->arg = arg;	1707	once->arg = arg;
1272		1708
1273	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1710	if (fd >= 0)
1275	{	1711	{
1276	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1713	ev_io_start (EV_A_ &once->io);
1278	}	1714	}
1279		1715
1280	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1717	if (timeout >= 0.)
1282	{	1718	{
1283	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1720	ev_timer_start (EV_A_ &once->to);
1285	}
1286	}
1287	}
1288
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{	1721	}
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}	1722	}
1366		1723
		1724	#ifdef __cplusplus
		1725	}
1367	#endif	1726	#endif
1368		1727
1369
1370
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