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

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 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	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		56	# define EV_USE_SELECT 1
		57	# else
		58	# define EV_USE_SELECT 0
		59	# endif
		60
		61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		62	# define EV_USE_POLL 1
		63	# else
		64	# define EV_USE_POLL 0
		65	# endif
		66
		67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		68	# define EV_USE_EPOLL 1
		69	# else
		70	# define EV_USE_EPOLL 0
		71	# endif
		72
		73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		74	# define EV_USE_KQUEUE 1
		75	# else
		76	# define EV_USE_KQUEUE 0
		77	# endif
		78
		79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		80	# define EV_USE_PORT 1
		81	# else
		82	# define EV_USE_PORT 0
		83	# endif
		84
33	#endif	85	#endif
34		86
35	#include <math.h>	87	#include <math.h>
36	#include <stdlib.h>	88	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	89	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	90	#include <stddef.h>
41		91
42	#include <stdio.h>	92	#include <stdio.h>
43		93
44	#include <assert.h>	94	#include <assert.h>
45	#include <errno.h>	95	#include <errno.h>
46	#include <sys/types.h>	96	#include <sys/types.h>
		97	#include <time.h>
		98
		99	#include <signal.h>
		100
47	#ifndef WIN32	101	#ifndef _WIN32
		102	# include <unistd.h>
		103	# include <sys/time.h>
48	# include <sys/wait.h>	104	# include <sys/wait.h>
		105	#else
		106	# define WIN32_LEAN_AND_MEAN
		107	# include <windows.h>
		108	# ifndef EV_SELECT_IS_WINSOCKET
		109	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	110	# endif
50	#include <sys/time.h>	111	#endif
51	#include <time.h>
52		112
53	/**/	113	/**/
54		114
55	#ifndef EV_USE_MONOTONIC	115	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 0
57	#endif	121	#endif
58		122
59	#ifndef EV_USE_SELECT	123	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	124	# define EV_USE_SELECT 1
61	#endif	125	#endif
62		126
63	#ifndef EV_USEV_POLL	127	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	128	# ifdef _WIN32
		129	# define EV_USE_POLL 0
		130	# else
		131	# define EV_USE_POLL 1
		132	# endif
65	#endif	133	#endif
66		134
67	#ifndef EV_USE_EPOLL	135	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	136	# define EV_USE_EPOLL 0
69	#endif	137	#endif
70		138
71	#ifndef EV_USE_KQUEUE	139	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	140	# define EV_USE_KQUEUE 0
73	#endif	141	#endif
74		142
75	#ifndef EV_USE_REALTIME	143	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	144	# define EV_USE_PORT 0
77	#endif	145	#endif
78		146
79	/**/	147	/**/
		148
		149	/* darwin simply cannot be helped */
		150	#ifdef __APPLE__
		151	# undef EV_USE_POLL
		152	# undef EV_USE_KQUEUE
		153	#endif
80		154
81	#ifndef CLOCK_MONOTONIC	155	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	156	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	157	# define EV_USE_MONOTONIC 0
84	#endif	158	#endif
…		…
86	#ifndef CLOCK_REALTIME	160	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	161	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	162	# define EV_USE_REALTIME 0
89	#endif	163	#endif
90		164
		165	#if EV_SELECT_IS_WINSOCKET
		166	# include <winsock.h>
		167	#endif
		168
91	/**/	169	/**/
92		170
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	171	#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) */	172	#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 */	173	#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 */	174	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		175
		176	#ifdef EV_H
		177	# include EV_H
		178	#else
98	#include "ev.h"	179	# include "ev.h"
		180	#endif
99		181
100	#if __GNUC__ >= 3	182	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	183	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	184	# define inline static inline
103	#else	185	#else
104	# define expect(expr,value) (expr)	186	# define expect(expr,value) (expr)
105	# define inline static	187	# define inline static
106	#endif	188	#endif
107		189
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	191	#define expect_true(expr) expect ((expr) != 0, 1)
110		192
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		195
		196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		197	#define EMPTY2(a,b) /* used to suppress some warnings */
		198
114	typedef struct ev_watcher *W;	199	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	200	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	201	typedef struct ev_watcher_time *WT;
117		202
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		204
122	static int have_monotonic; /* runtime */	205	#ifdef _WIN32
123		206	# 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	207	#endif
156		208
157	/*****************************************************************************/	209	/*****************************************************************************/
158		210
159	inline ev_tstamp	211	static void (syserr_cb)(const char msg);
		212
		213	void ev_set_syserr_cb (void (cb)(const char msg))
		214	{
		215	syserr_cb = cb;
		216	}
		217
		218	static void
		219	syserr (const char *msg)
		220	{
		221	if (!msg)
		222	msg = "(libev) system error";
		223
		224	if (syserr_cb)
		225	syserr_cb (msg);
		226	else
		227	{
		228	perror (msg);
		229	abort ();
		230	}
		231	}
		232
		233	static void (alloc)(void *ptr, long size);
		234
		235	void ev_set_allocator (void (cb)(void *ptr, long size))
		236	{
		237	alloc = cb;
		238	}
		239
		240	static void *
		241	ev_realloc (void *ptr, long size)
		242	{
		243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		244
		245	if (!ptr && size)
		246	{
		247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		248	abort ();
		249	}
		250
		251	return ptr;
		252	}
		253
		254	#define ev_malloc(size) ev_realloc (0, (size))
		255	#define ev_free(ptr) ev_realloc ((ptr), 0)
		256
		257	/*****************************************************************************/
		258
		259	typedef struct
		260	{
		261	WL head;
		262	unsigned char events;
		263	unsigned char reify;
		264	#if EV_SELECT_IS_WINSOCKET
		265	SOCKET handle;
		266	#endif
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	ev_tstamp ev_rt_now;
		280	#define ev_rt_now ((loop)->ev_rt_now)
		281	#define VAR(name,decl) decl;
		282	#include "ev_vars.h"
		283	#undef VAR
		284	};
		285	#include "ev_wrap.h"
		286
		287	static struct ev_loop default_loop_struct;
		288	struct ev_loop *ev_default_loop_ptr;
		289
		290	#else
		291
		292	ev_tstamp ev_rt_now;
		293	#define VAR(name,decl) static decl;
		294	#include "ev_vars.h"
		295	#undef VAR
		296
		297	static int ev_default_loop_ptr;
		298
		299	#endif
		300
		301	/*****************************************************************************/
		302
		303	ev_tstamp
160	ev_time (void)	304	ev_time (void)
161	{	305	{
162	#if EV_USE_REALTIME	306	#if EV_USE_REALTIME
163	struct timespec ts;	307	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	308	clock_gettime (CLOCK_REALTIME, &ts);
…		…
183	#endif	327	#endif
184		328
185	return ev_time ();	329	return ev_time ();
186	}	330	}
187		331
		332	#if EV_MULTIPLICITY
188	ev_tstamp	333	ev_tstamp
189	ev_now (EV_P)	334	ev_now (EV_P)
190	{	335	{
191	return rt_now;	336	return ev_rt_now;
192	}	337	}
		338	#endif
193		339
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	340	#define array_roundsize(type,n) (((n) \| 4) & ~3)
195		341
196	#define array_needsize(base,cur,cnt,init) \	342	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	343	if (expect_false ((cnt) > cur)) \
198	{ \	344	{ \
199	int newcnt = cur; \	345	int newcnt = cur; \
200	do \	346	do \
201	{ \	347	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	348	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	349	} \
204	while ((cnt) > newcnt); \	350	while ((cnt) > newcnt); \
205	\	351	\
206	base = realloc (base, sizeof (base) (newcnt)); \	352	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	353	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	354	cur = newcnt; \
209	}	355	}
		356
		357	#define array_slim(type,stem) \
		358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		359	{ \
		360	stem ## max = array_roundsize (stem ## cnt >> 1); \
		361	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		363	}
		364
		365	#define array_free(stem, idx) \
		366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		367
211	/*****************************************************************************/	368	/*****************************************************************************/
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		369
223	static void	370	static void
224	anfds_init (ANFD *base, int count)	371	anfds_init (ANFD *base, int count)
225	{	372	{
226	while (count--)	373	while (count--)
…		…
231		378
232	++base;	379	++base;
233	}	380	}
234	}	381	}
235		382
236	typedef struct	383	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)	384	ev_feed_event (EV_P_ void *w, int revents)
247	{	385	{
248	if (w->pending)	386	W w_ = (W)w;
		387
		388	if (expect_false (w_->pending))
249	{	389	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	390	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
251	return;	391	return;
252	}	392	}
253		393
254	w->pending = ++pendingcnt [ABSPRI (w)];	394	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	398	}
259		399
260	static void	400	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	401	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	402	{
263	int i;	403	int i;
264		404
265	for (i = 0; i < eventcnt; ++i)	405	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	406	ev_feed_event (EV_A_ events [i], type);
267	}	407	}
268		408
269	static void	409	inline void
270	fd_event (EV_P_ int fd, int events)	410	fd_event (EV_P_ int fd, int revents)
271	{	411	{
272	ANFD *anfd = anfds + fd;	412	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	413	struct ev_io *w;
274		414
275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	415	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
276	{	416	{
277	int ev = w->events & events;	417	int ev = w->events & revents;
278		418
279	if (ev)	419	if (ev)
280	event (EV_A_ (W)w, ev);	420	ev_feed_event (EV_A_ (W)w, ev);
281	}	421	}
		422	}
		423
		424	void
		425	ev_feed_fd_event (EV_P_ int fd, int revents)
		426	{
		427	fd_event (EV_A_ fd, revents);
282	}	428	}
283		429
284	/*****************************************************************************/	430	/*****************************************************************************/
285		431
286	static int *fdchanges;	432	inline void
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	433	fd_reify (EV_P)
291	{	434	{
292	int i;	435	int i;
293		436
294	for (i = 0; i < fdchangecnt; ++i)	437	for (i = 0; i < fdchangecnt; ++i)
…		…
300	int events = 0;	443	int events = 0;
301		444
302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	445	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
303	events \|= w->events;	446	events \|= w->events;
304		447
		448	#if EV_SELECT_IS_WINSOCKET
		449	if (events)
		450	{
		451	unsigned long argp;
		452	anfd->handle = _get_osfhandle (fd);
		453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		454	}
		455	#endif
		456
305	anfd->reify = 0;	457	anfd->reify = 0;
306		458
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	459	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	460	anfd->events = events;
311	}
312	}	461	}
313		462
314	fdchangecnt = 0;	463	fdchangecnt = 0;
315	}	464	}
316		465
317	static void	466	static void
318	fd_change (EV_P_ int fd)	467	fd_change (EV_P_ int fd)
319	{	468	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	469	if (expect_false (anfds [fd].reify))
321	return;	470	return;
322		471
323	anfds [fd].reify = 1;	472	anfds [fd].reify = 1;
324		473
325	++fdchangecnt;	474	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	476	fdchanges [fdchangecnt - 1] = fd;
328	}	477	}
329		478
330	static void	479	static void
331	fd_kill (EV_P_ int fd)	480	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	482	struct ev_io *w;
334		483
335	while ((w = (struct ev_io *)anfds [fd].head))	484	while ((w = (struct ev_io *)anfds [fd].head))
336	{	485	{
337	ev_io_stop (EV_A_ w);	486	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	487	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
339	}	488	}
		489	}
		490
		491	inline int
		492	fd_valid (int fd)
		493	{
		494	#ifdef _WIN32
		495	return _get_osfhandle (fd) != -1;
		496	#else
		497	return fcntl (fd, F_GETFD) != -1;
		498	#endif
340	}	499	}
341		500
342	/* called on EBADF to verify fds */	501	/* called on EBADF to verify fds */
343	static void	502	static void
344	fd_ebadf (EV_P)	503	fd_ebadf (EV_P)
345	{	504	{
346	int fd;	505	int fd;
347		506
348	for (fd = 0; fd < anfdmax; ++fd)	507	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	508	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	509	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	510	fd_kill (EV_A_ fd);
352	}	511	}
353		512
354	/* called on ENOMEM in select/poll to kill some fds and retry */	513	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	514	static void
356	fd_enomem (EV_P)	515	fd_enomem (EV_P)
357	{	516	{
358	int fd = anfdmax;	517	int fd;
359		518
360	while (fd--)	519	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	520	if (anfds [fd].events)
362	{	521	{
363	close (fd);
364	fd_kill (EV_A_ fd);	522	fd_kill (EV_A_ fd);
365	return;	523	return;
366	}	524	}
367	}	525	}
368		526
		527	/* usually called after fork if method needs to re-arm all fds from scratch */
		528	static void
		529	fd_rearm_all (EV_P)
		530	{
		531	int fd;
		532
		533	/* this should be highly optimised to not do anything but set a flag */
		534	for (fd = 0; fd < anfdmax; ++fd)
		535	if (anfds [fd].events)
		536	{
		537	anfds [fd].events = 0;
		538	fd_change (EV_A_ fd);
		539	}
		540	}
		541
369	/*****************************************************************************/	542	/*****************************************************************************/
370		543
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	544	static void
378	upheap (WT *timers, int k)	545	upheap (WT *heap, int k)
379	{	546	{
380	WT w = timers [k];	547	WT w = heap [k];
381		548
382	while (k && timers [k >> 1]->at > w->at)	549	while (k && heap [k >> 1]->at > w->at)
383	{	550	{
384	timers [k] = timers [k >> 1];	551	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
386	k >>= 1;	553	k >>= 1;
387	}	554	}
388		555
389	timers [k] = w;	556	heap [k] = w;
390	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
391		558
392	}	559	}
393		560
394	static void	561	static void
395	downheap (WT *timers, int N, int k)	562	downheap (WT *heap, int N, int k)
396	{	563	{
397	WT w = timers [k];	564	WT w = heap [k];
398		565
399	while (k < (N >> 1))	566	while (k < (N >> 1))
400	{	567	{
401	int j = k << 1;	568	int j = k << 1;
402		569
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	571	++j;
405		572
406	if (w->at <= timers [j]->at)	573	if (w->at <= heap [j]->at)
407	break;	574	break;
408		575
409	timers [k] = timers [j];	576	heap [k] = heap [j];
410	timers [k]->active = k + 1;	577	((W)heap [k])->active = k + 1;
411	k = j;	578	k = j;
412	}	579	}
413		580
414	timers [k] = w;	581	heap [k] = w;
415	timers [k]->active = k + 1;	582	((W)heap [k])->active = k + 1;
		583	}
		584
		585	inline void
		586	adjustheap (WT *heap, int N, int k)
		587	{
		588	upheap (heap, k);
		589	downheap (heap, N, k);
416	}	590	}
417		591
418	/*****************************************************************************/	592	/*****************************************************************************/
419		593
420	typedef struct	594	typedef struct
421	{	595	{
422	struct ev_watcher_list *head;	596	WL head;
423	sig_atomic_t volatile gotsig;	597	sig_atomic_t volatile gotsig;
424	} ANSIG;	598	} ANSIG;
425		599
426	static ANSIG *signals;	600	static ANSIG *signals;
427	static int signalmax;	601	static int signalmax;
…		…
443	}	617	}
444		618
445	static void	619	static void
446	sighandler (int signum)	620	sighandler (int signum)
447	{	621	{
		622	#if _WIN32
		623	signal (signum, sighandler);
		624	#endif
		625
448	signals [signum - 1].gotsig = 1;	626	signals [signum - 1].gotsig = 1;
449		627
450	if (!gotsig)	628	if (!gotsig)
451	{	629	{
452	int old_errno = errno;	630	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	633	errno = old_errno;
456	}	634	}
457	}	635	}
458		636
		637	void
		638	ev_feed_signal_event (EV_P_ int signum)
		639	{
		640	WL w;
		641
		642	#if EV_MULTIPLICITY
		643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		644	#endif
		645
		646	--signum;
		647
		648	if (signum < 0 \|\| signum >= signalmax)
		649	return;
		650
		651	signals [signum].gotsig = 0;
		652
		653	for (w = signals [signum].head; w; w = w->next)
		654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		655	}
		656
459	static void	657	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	659	{
462	struct ev_watcher_list *w;
463	int signum;	660	int signum;
464		661
465	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	663	gotsig = 0;
467		664
468	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
470	{	667	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;	668	}
472		669
473	for (w = signals [signum].head; w; w = w->next)	670	static void
474	event (EV_A_ (W)w, EV_SIGNAL);	671	fd_intern (int fd)
475	}	672	{
		673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
		677	fcntl (fd, F_SETFD, FD_CLOEXEC);
		678	fcntl (fd, F_SETFL, O_NONBLOCK);
		679	#endif
476	}	680	}
477		681
478	static void	682	static void
479	siginit (EV_P)	683	siginit (EV_P)
480	{	684	{
481	#ifndef WIN32	685	fd_intern (sigpipe [0]);
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	686	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		687
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	690	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	691	}
494		692
495	/*****************************************************************************/	693	/*****************************************************************************/
496		694
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];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
509	static struct ev_signal childev;	699	static struct ev_signal childev;
510
511	#ifndef WIN32
512		700
513	#ifndef WCONTINUED	701	#ifndef WCONTINUED
514	# define WCONTINUED 0	702	# define WCONTINUED 0
515	#endif	703	#endif
516		704
…		…
520	struct ev_child *w;	708	struct ev_child *w;
521		709
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	710	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)	711	if (w->pid == pid \|\| !w->pid)
524	{	712	{
525	w->priority = sw->priority; /* need to do it now */	713	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	714	w->rpid = pid;
527	w->rstatus = status;	715	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	717	}
530	}	718	}
531		719
532	static void	720	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	721	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	723	int pid, status;
536		724
537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	725	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
538	{	726	{
539	/* make sure we are called again until all childs have been reaped */	727	/* make sure we are called again until all childs have been reaped */
540	event (EV_A_ (W)sw, EV_SIGNAL);	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		729
542	child_reap (EV_A_ sw, pid, pid, status);	730	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 */	731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544	}	732	}
545	}	733	}
546		734
547	#endif	735	#endif
548		736
549	/*****************************************************************************/	737	/*****************************************************************************/
550		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
551	#if EV_USE_KQUEUE	742	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	743	# include "ev_kqueue.c"
553	#endif	744	#endif
554	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	746	# include "ev_epoll.c"
556	#endif	747	#endif
557	#if EV_USEV_POLL	748	#if EV_USE_POLL
558	# include "ev_poll.c"	749	# include "ev_poll.c"
559	#endif	750	#endif
560	#if EV_USE_SELECT	751	#if EV_USE_SELECT
561	# include "ev_select.c"	752	# include "ev_select.c"
562	#endif	753	#endif
…		…
575		766
576	/* return true if we are running with elevated privileges and should ignore env variables */	767	/* return true if we are running with elevated privileges and should ignore env variables */
577	static int	768	static int
578	enable_secure (void)	769	enable_secure (void)
579	{	770	{
580	#ifdef WIN32	771	#ifdef _WIN32
581	return 0;	772	return 0;
582	#else	773	#else
583	return getuid () != geteuid ()	774	return getuid () != geteuid ()
584	\|\| getgid () != getegid ();	775	\|\| getgid () != getegid ();
585	#endif	776	#endif
586	}	777	}
587		778
588	int	779	unsigned int
589	ev_method (EV_P)	780	ev_method (EV_P)
590	{	781	{
591	return method;	782	return method;
592	}	783	}
593		784
594	int	785	static void
595	ev_init (EV_P_ int methods)	786	loop_init (EV_P_ unsigned int flags)
596	{	787	{
597	if (!method)	788	if (!method)
598	{	789	{
599	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
600	{	791	{
…		…
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	794	have_monotonic = 1;
604	}	795	}
605	#endif	796	#endif
606		797
607	rt_now = ev_time ();	798	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	799	mn_now = get_clock ();
609	now_floor = mn_now;	800	now_floor = mn_now;
610	diff = rt_now - mn_now;	801	rtmn_diff = ev_rt_now - mn_now;
611		802
612	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
613	return 0;	804	flags = atoi (getenv ("LIBEV_FLAGS"));
614		805
615	if (methods == EVMETHOD_AUTO)	806	if (!(flags & 0x0000ffff))
616	if (!enable_secure () && getenv ("LIBmethodS"))	807	flags \|= 0x0000ffff;
617	methods = atoi (getenv ("LIBmethodS"));
618	else
619	methods = EVMETHOD_ANY;
620		808
621	method = 0;	809	method = 0;
		810	#if EV_USE_PORT
		811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		812	#endif
622	#if EV_USE_KQUEUE	813	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
624	#endif	815	#endif
625	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
627	#endif	818	#endif
628	#if EV_USEV_POLL	819	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
630	#endif	821	#endif
631	#if EV_USE_SELECT	822	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
633	#endif	824	#endif
634		825
		826	ev_init (&sigev, sigcb);
		827	ev_set_priority (&sigev, EV_MAXPRI);
		828	}
		829	}
		830
		831	static void
		832	loop_destroy (EV_P)
		833	{
		834	int i;
		835
		836	#if EV_USE_PORT
		837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		838	#endif
		839	#if EV_USE_KQUEUE
		840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		841	#endif
		842	#if EV_USE_EPOLL
		843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		844	#endif
		845	#if EV_USE_POLL
		846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		847	#endif
		848	#if EV_USE_SELECT
		849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		850	#endif
		851
		852	for (i = NUMPRI; i--; )
		853	array_free (pending, [i]);
		854
		855	/* have to use the microsoft-never-gets-it-right macro */
		856	array_free (fdchange, EMPTY0);
		857	array_free (timer, EMPTY0);
		858	#if EV_PERIODICS
		859	array_free (periodic, EMPTY0);
		860	#endif
		861	array_free (idle, EMPTY0);
		862	array_free (prepare, EMPTY0);
		863	array_free (check, EMPTY0);
		864
		865	method = 0;
		866	}
		867
		868	static void
		869	loop_fork (EV_P)
		870	{
		871	#if EV_USE_PORT
		872	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		873	#endif
		874	#if EV_USE_KQUEUE
		875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		876	#endif
		877	#if EV_USE_EPOLL
		878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		879	#endif
		880
		881	if (ev_is_active (&sigev))
		882	{
		883	/* default loop */
		884
		885	ev_ref (EV_A);
		886	ev_io_stop (EV_A_ &sigev);
		887	close (sigpipe [0]);
		888	close (sigpipe [1]);
		889
		890	while (pipe (sigpipe))
		891	syserr ("(libev) error creating pipe");
		892
		893	siginit (EV_A);
		894	}
		895
		896	postfork = 0;
		897	}
		898
		899	#if EV_MULTIPLICITY
		900	struct ev_loop *
		901	ev_loop_new (unsigned int flags)
		902	{
		903	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		904
		905	memset (loop, 0, sizeof (struct ev_loop));
		906
		907	loop_init (EV_A_ flags);
		908
		909	if (ev_method (EV_A))
		910	return loop;
		911
		912	return 0;
		913	}
		914
		915	void
		916	ev_loop_destroy (EV_P)
		917	{
		918	loop_destroy (EV_A);
		919	ev_free (loop);
		920	}
		921
		922	void
		923	ev_loop_fork (EV_P)
		924	{
		925	postfork = 1;
		926	}
		927
		928	#endif
		929
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *
		932	ev_default_loop_init (unsigned int flags)
		933	#else
		934	int
		935	ev_default_loop (unsigned int flags)
		936	#endif
		937	{
		938	if (sigpipe [0] == sigpipe [1])
		939	if (pipe (sigpipe))
		940	return 0;
		941
		942	if (!ev_default_loop_ptr)
		943	{
		944	#if EV_MULTIPLICITY
		945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		946	#else
		947	ev_default_loop_ptr = 1;
		948	#endif
		949
		950	loop_init (EV_A_ flags);
		951
635	if (method)	952	if (ev_method (EV_A))
636	{	953	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	954	siginit (EV_A);
640		955
641	#ifndef WIN32	956	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	958	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	959	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	960	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	961	#endif
647	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
648	}	965	}
649		966
650	return method;	967	return ev_default_loop_ptr;
		968	}
		969
		970	void
		971	ev_default_destroy (void)
		972	{
		973	#if EV_MULTIPLICITY
		974	struct ev_loop *loop = ev_default_loop_ptr;
		975	#endif
		976
		977	#ifndef _WIN32
		978	ev_ref (EV_A); /* child watcher */
		979	ev_signal_stop (EV_A_ &childev);
		980	#endif
		981
		982	ev_ref (EV_A); /* signal watcher */
		983	ev_io_stop (EV_A_ &sigev);
		984
		985	close (sigpipe [0]); sigpipe [0] = 0;
		986	close (sigpipe [1]); sigpipe [1] = 0;
		987
		988	loop_destroy (EV_A);
		989	}
		990
		991	void
		992	ev_default_fork (void)
		993	{
		994	#if EV_MULTIPLICITY
		995	struct ev_loop *loop = ev_default_loop_ptr;
		996	#endif
		997
		998	if (method)
		999	postfork = 1;
651	}	1000	}
652		1001
653	/*****************************************************************************/	1002	/*****************************************************************************/
654		1003
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	1004	static int
		1005	any_pending (EV_P)
		1006	{
		1007	int pri;
		1008
		1009	for (pri = NUMPRI; pri--; )
		1010	if (pendingcnt [pri])
		1011	return 1;
		1012
		1013	return 0;
		1014	}
		1015
		1016	inline void
685	call_pending (EV_P)	1017	call_pending (EV_P)
686	{	1018	{
687	int pri;	1019	int pri;
688		1020
689	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
691	{	1023	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1025
694	if (p->w)	1026	if (expect_true (p->w))
695	{	1027	{
696	p->w->pending = 0;	1028	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
698	}	1030	}
699	}	1031	}
700	}	1032	}
701		1033
702	static void	1034	inline void
703	timers_reify (EV_P)	1035	timers_reify (EV_P)
704	{	1036	{
705	while (timercnt && timers [0]->at <= mn_now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1038	{
707	struct ev_timer *w = timers [0];	1039	struct ev_timer *w = timers [0];
		1040
		1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		1042
709	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
710	if (w->repeat)	1044	if (w->repeat)
711	{	1045	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1047
713	w->at = mn_now + w->repeat;	1048	((WT)w)->at += w->repeat;
		1049	if (((WT)w)->at < mn_now)
		1050	((WT)w)->at = mn_now;
		1051
714	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
715	}	1053	}
716	else	1054	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1056
719	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1058	}
721	}	1059	}
722		1060
723	static void	1061	#if EV_PERIODICS
		1062	inline void
724	periodics_reify (EV_P)	1063	periodics_reify (EV_P)
725	{	1064	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1066	{
728	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
729		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
730	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
731	if (w->interval)	1072	if (w->reschedule_cb)
732	{	1073	{
		1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1076	downheap ((WT *)periodics, periodiccnt, 0);
		1077	}
		1078	else if (w->interval)
		1079	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1080	((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));	1081	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);	1082	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1083	}
737	else	1084	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1086
740	event (EV_A_ (W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1088	}
742	}	1089	}
743		1090
744	static void	1091	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1092	periodics_reschedule (EV_P)
746	{	1093	{
747	int i;	1094	int i;
748		1095
749	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
751	{	1098	{
752	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
753		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1103	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1104	((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	}	1105	}
		1106
		1107	/* now rebuild the heap */
		1108	for (i = periodiccnt >> 1; i--; )
		1109	downheap ((WT *)periodics, periodiccnt, i);
767	}	1110	}
		1111	#endif
768		1112
769	inline int	1113	inline int
770	time_update_monotonic (EV_P)	1114	time_update_monotonic (EV_P)
771	{	1115	{
772	mn_now = get_clock ();	1116	mn_now = get_clock ();
773		1117
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1119	{
776	rt_now = mn_now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1121	return 0;
778	}	1122	}
779	else	1123	else
780	{	1124	{
781	now_floor = mn_now;	1125	now_floor = mn_now;
782	rt_now = ev_time ();	1126	ev_rt_now = ev_time ();
783	return 1;	1127	return 1;
784	}	1128	}
785	}	1129	}
786		1130
787	static void	1131	inline void
788	time_update (EV_P)	1132	time_update (EV_P)
789	{	1133	{
790	int i;	1134	int i;
791		1135
792	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
794	{	1138	{
795	if (time_update_monotonic (EV_A))	1139	if (time_update_monotonic (EV_A))
796	{	1140	{
797	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
798		1142
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1144	{
801	diff = rt_now - mn_now;	1145	rtmn_diff = ev_rt_now - mn_now;
802		1146
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1148	return; /* all is well */
805		1149
806	rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1151	mn_now = get_clock ();
808	now_floor = mn_now;	1152	now_floor = mn_now;
809	}	1153	}
810		1154
		1155	# if EV_PERIODICS
811	periodics_reschedule (EV_A_ diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1158	/* no timer adjustment, as the monotonic clock doesn't jump */
		1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1160	}
814	}	1161	}
815	else	1162	else
816	#endif	1163	#endif
817	{	1164	{
818	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
819		1166
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1167	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1168	{
		1169	#if EV_PERIODICS
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1170	periodics_reschedule (EV_A);
		1171	#endif
823		1172
824	/* adjust timers. this is easy, as the offset is the same for all */	1173	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1176	}
828		1177
829	mn_now = rt_now;	1178	mn_now = ev_rt_now;
830	}	1179	}
831	}	1180	}
832		1181
833	void	1182	void
834	ev_ref (EV_P)	1183	ev_ref (EV_P)
…		…
848	ev_loop (EV_P_ int flags)	1197	ev_loop (EV_P_ int flags)
849	{	1198	{
850	double block;	1199	double block;
851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
852		1201
853	do	1202	while (activecnt)
854	{	1203	{
855	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
856	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
857	{	1206	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1208	call_pending (EV_A);
860	}	1209	}
861		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
862	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1216	fd_reify (EV_A);
864		1217
865	/* calculate blocking time */	1218	/* calculate blocking time */
866		1219
867	/* we only need this for !monotonic clockor timers, but as we basically	1220	/* we only need this for !monotonic clock or timers, but as we basically
868	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1224	time_update_monotonic (EV_A);
872	else	1225	else
873	#endif	1226	#endif
874	{	1227	{
875	rt_now = ev_time ();	1228	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1229	mn_now = ev_rt_now;
877	}	1230	}
878		1231
879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1232	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
880	block = 0.;	1233	block = 0.;
881	else	1234	else
882	{	1235	{
883	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
884		1237
885	if (timercnt)	1238	if (timercnt)
886	{	1239	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1241	if (block > to) block = to;
889	}	1242	}
890		1243
		1244	#if EV_PERIODICS
891	if (periodiccnt)	1245	if (periodiccnt)
892	{	1246	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
894	if (block > to) block = to;	1248	if (block > to) block = to;
895	}	1249	}
		1250	#endif
896		1251
897	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
898	}	1253	}
899		1254
900	method_poll (EV_A_ block);	1255	method_poll (EV_A_ block);
901		1256
902	/* update rt_now, do magic */	1257	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1258	time_update (EV_A);
904		1259
905	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
907	periodics_reify (EV_A); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
908		1265
909	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1269
913	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
914	if (checkcnt)	1271	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1273
917	call_pending (EV_A);	1274	call_pending (EV_A);
		1275
		1276	if (expect_false (loop_done))
		1277	break;
918	}	1278	}
919	while (activecnt && !loop_done);
920		1279
921	if (loop_done != 2)	1280	if (loop_done != 2)
922	loop_done = 0;	1281	loop_done = 0;
923	}	1282	}
924		1283
…		…
984	void	1343	void
985	ev_io_start (EV_P_ struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
986	{	1345	{
987	int fd = w->fd;	1346	int fd = w->fd;
988		1347
989	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
990	return;	1349	return;
991		1350
992	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
993		1352
994	ev_start (EV_A_ (W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1356
998	fd_change (EV_A_ fd);	1357	fd_change (EV_A_ fd);
999	}	1358	}
1000		1359
1001	void	1360	void
1002	ev_io_stop (EV_P_ struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
1003	{	1362	{
1004	ev_clear_pending (EV_A_ (W)w);	1363	ev_clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
1006	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1007		1368
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1010		1371
1011	fd_change (EV_A_ w->fd);	1372	fd_change (EV_A_ w->fd);
1012	}	1373	}
1013		1374
1014	void	1375	void
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1377	{
1017	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
1018	return;	1379	return;
1019		1380
1020	w->at += mn_now;	1381	((WT)w)->at += mn_now;
1021		1382
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1384
1024	ev_start (EV_A_ (W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1391	}
1029		1392
1030	void	1393	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1395	{
1033	ev_clear_pending (EV_A_ (W)w);	1396	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
1035	return;	1398	return;
1036		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
1037	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
1038	{	1403	{
1039	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1406	}
1042		1407
1043	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
1044		1409
1045	ev_stop (EV_A_ (W)w);	1410	ev_stop (EV_A_ (W)w);
1046	}	1411	}
1047		1412
1048	void	1413	void
…		…
1050	{	1415	{
1051	if (ev_is_active (w))	1416	if (ev_is_active (w))
1052	{	1417	{
1053	if (w->repeat)	1418	if (w->repeat)
1054	{	1419	{
1055	w->at = mn_now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1422	}
1058	else	1423	else
1059	ev_timer_stop (EV_A_ w);	1424	ev_timer_stop (EV_A_ w);
1060	}	1425	}
1061	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1429	ev_timer_start (EV_A_ w);
		1430	}
1063	}	1431	}
1064		1432
		1433	#if EV_PERIODICS
1065	void	1434	void
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1436	{
1068	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1069	return;	1438	return;
1070		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1444	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 */	1445	/* 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;	1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1447	}
1076		1448
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1455	}
1082		1456
1083	void	1457	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1459	{
1086	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1088	return;	1462	return;
1089		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
1090	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
1091	{	1467	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1470	}
1095		1471
		1472	ev_stop (EV_A_ (W)w);
		1473	}
		1474
		1475	void
		1476	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1477	{
		1478	/* TODO: use adjustheap and recalculation */
		1479	ev_periodic_stop (EV_A_ w);
		1480	ev_periodic_start (EV_A_ w);
		1481	}
		1482	#endif
		1483
		1484	void
		1485	ev_idle_start (EV_P_ struct ev_idle *w)
		1486	{
		1487	if (expect_false (ev_is_active (w)))
		1488	return;
		1489
		1490	ev_start (EV_A_ (W)w, ++idlecnt);
		1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1492	idles [idlecnt - 1] = w;
		1493	}
		1494
		1495	void
		1496	ev_idle_stop (EV_P_ struct ev_idle *w)
		1497	{
		1498	ev_clear_pending (EV_A_ (W)w);
		1499	if (expect_false (!ev_is_active (w)))
		1500	return;
		1501
		1502	idles [((W)w)->active - 1] = idles [--idlecnt];
		1503	ev_stop (EV_A_ (W)w);
		1504	}
		1505
		1506	void
		1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1508	{
		1509	if (expect_false (ev_is_active (w)))
		1510	return;
		1511
		1512	ev_start (EV_A_ (W)w, ++preparecnt);
		1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1514	prepares [preparecnt - 1] = w;
		1515	}
		1516
		1517	void
		1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1519	{
		1520	ev_clear_pending (EV_A_ (W)w);
		1521	if (expect_false (!ev_is_active (w)))
		1522	return;
		1523
		1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1525	ev_stop (EV_A_ (W)w);
		1526	}
		1527
		1528	void
		1529	ev_check_start (EV_P_ struct ev_check *w)
		1530	{
		1531	if (expect_false (ev_is_active (w)))
		1532	return;
		1533
		1534	ev_start (EV_A_ (W)w, ++checkcnt);
		1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1536	checks [checkcnt - 1] = w;
		1537	}
		1538
		1539	void
		1540	ev_check_stop (EV_P_ struct ev_check *w)
		1541	{
		1542	ev_clear_pending (EV_A_ (W)w);
		1543	if (expect_false (!ev_is_active (w)))
		1544	return;
		1545
		1546	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1097	}	1548	}
1098		1549
1099	#ifndef SA_RESTART	1550	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1551	# define SA_RESTART 0
1101	#endif	1552	#endif
1102		1553
1103	void	1554	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
1106	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1107	return;	1561	return;
1108		1562
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1564
1111	ev_start (EV_A_ (W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1568
1115	if (!w->next)	1569	if (!((WL)w)->next)
1116	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1117	struct sigaction sa;	1574	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1122	}	1580	}
1123	}	1581	}
1124		1582
1125	void	1583	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1127	{	1585	{
1128	ev_clear_pending (EV_A_ (W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1130	return;	1588	return;
1131		1589
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1591	ev_stop (EV_A_ (W)w);
1134		1592
1135	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1137	}	1595	}
1138		1596
1139	void	1597	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)	1598	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1208	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1209	return;	1604	return;
1210		1605
1211	ev_start (EV_A_ (W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	1608	}
1214		1609
1215	void	1610	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1217	{	1612	{
1218	ev_clear_pending (EV_A_ (W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1220	return;	1615	return;
1221		1616
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1224	}	1619	}
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1634	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1635	void *arg = once->arg;
1241		1636
1242	ev_io_stop (EV_A_ &once->io);	1637	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1639	ev_free (once);
1245		1640
1246	cb (revents, arg);	1641	cb (revents, arg);
1247	}	1642	}
1248		1643
1249	static void	1644	static void
…		…
1259	}	1654	}
1260		1655
1261	void	1656	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1657	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1658	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1660
1266	if (!once)	1661	if (expect_false (!once))
		1662	{
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1663	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1664	return;
1269	{	1665	}
		1666
1270	once->cb = cb;	1667	once->cb = cb;
1271	once->arg = arg;	1668	once->arg = arg;
1272		1669
1273	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1671	if (fd >= 0)
1275	{	1672	{
1276	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1674	ev_io_start (EV_A_ &once->io);
1278	}	1675	}
1279		1676
1280	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1678	if (timeout >= 0.)
1282	{	1679	{
1283	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1681	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	{	1682	}
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	}	1683	}
1366		1684
		1685	#ifdef __cplusplus
		1686	}
1367	#endif	1687	#endif
1368		1688
1369
1370
1371

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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 1.126 by root, Sun Nov 18 01:25:23 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC