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Comparing libev/ev.c (file contents):
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC vs.
Revision 1.155 by root, Wed Nov 28 17:32:24 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
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
124	/**/	219	/**/
125		220
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130
131	#include "ev.h"
132		224
133	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
135	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
136	#else	235	#else
137	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
138	# define inline static	238	# define inline_size static
		239	# define noinline
139	#endif	240	#endif
140		241
141	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
143		244
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
147	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
150		254
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		256
		257	#ifdef _WIN32
153	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
154		260
155	/*****************************************************************************/	261	/*****************************************************************************/
156		262
157	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
158		264
		265	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	267	{
161	syserr_cb = cb;	268	syserr_cb = cb;
162	}	269	}
163		270
164	static void	271	static void noinline
165	syserr (const char *msg)	272	syserr (const char *msg)
166	{	273	{
167	if (!msg)	274	if (!msg)
168	msg = "(libev) system error";	275	msg = "(libev) system error";
169		276
…		…
176	}	283	}
177	}	284	}
178		285
179	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
180		287
		288	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	290	{
183	alloc = cb;	291	alloc = cb;
184	}	292	}
185		293
186	static void *	294	inline_speed void *
187	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
188	{	296	{
189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190		298
191	if (!ptr && size)	299	if (!ptr && size)
…		…
205	typedef struct	313	typedef struct
206	{	314	{
207	WL head;	315	WL head;
208	unsigned char events;	316	unsigned char events;
209	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
210	} ANFD;	321	} ANFD;
211		322
212	typedef struct	323	typedef struct
213	{	324	{
214	W w;	325	W w;
215	int events;	326	int events;
216	} ANPENDING;	327	} ANPENDING;
217		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
218	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
219		337
220	struct ev_loop	338	struct ev_loop
221	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	343	#include "ev_vars.h"
224	};
225	# undef VAR	344	#undef VAR
		345	};
226	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
227		350
228	#else	351	#else
229		352
		353	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	355	#include "ev_vars.h"
232	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
233		359
234	#endif	360	#endif
235		361
236	/*****************************************************************************/	362	/*****************************************************************************/
237		363
238	inline ev_tstamp	364	ev_tstamp
239	ev_time (void)	365	ev_time (void)
240	{	366	{
241	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
242	struct timespec ts;	368	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	375	#endif
250	}	376	}
251		377
252	inline ev_tstamp	378	ev_tstamp inline_size
253	get_clock (void)	379	get_clock (void)
254	{	380	{
255	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
257	{	383	{
…		…
262	#endif	388	#endif
263		389
264	return ev_time ();	390	return ev_time ();
265	}	391	}
266		392
		393	#if EV_MULTIPLICITY
267	ev_tstamp	394	ev_tstamp
268	ev_now (EV_P)	395	ev_now (EV_P)
269	{	396	{
270	return rt_now;	397	return ev_rt_now;
271	}	398	}
		399	#endif
272		400
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		402
275	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
277	{ \	405	{ \
278	int newcnt = cur; \	406	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	424	}
297		425
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		428
306	/*****************************************************************************/	429	/*****************************************************************************/
307		430
308	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
309	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
310	{	461	{
311	while (count--)	462	while (count--)
312	{	463	{
313	base->head = 0;	464	base->head = 0;
…		…
316		467
317	++base;	468	++base;
318	}	469	}
319	}	470	}
320		471
321	static void	472	void inline_speed
322	event (EV_P_ W w, int events)
323	{
324	if (w->pending)
325	{
326	pendings [ABSPRI (w)][w->pending - 1].events |= events;
327	return;
328	}
329
330	w->pending = ++pendingcnt [ABSPRI (w)];
331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332	pendings [ABSPRI (w)][w->pending - 1].w = w;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;
334	}
335
336	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{
339	int i;
340
341	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);
343	}
344
345	static void
346	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
347	{	474	{
348	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	476	ev_io *w;
350		477
351	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
352	{	479	{
353	int ev = w->events & events;	480	int ev = w->events & revents;
354		481
355	if (ev)	482	if (ev)
356	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
357	}	484	}
358	}	485	}
359		486
360	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
361		492
362	static void	493	void inline_size
363	fd_reify (EV_P)	494	fd_reify (EV_P)
364	{	495	{
365	int i;	496	int i;
366		497
367	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
368	{	499	{
369	int fd = fdchanges [i];	500	int fd = fdchanges [i];
370	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
371	struct ev_io *w;	502	ev_io *w;
372		503
373	int events = 0;	504	int events = 0;
374		505
375	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376	events |= w->events;	507	events |= w->events;
377		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
378	anfd->reify = 0;	518	anfd->reify = 0;
379		519
380	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	521	anfd->events = events;
382	}	522	}
383		523
384	fdchangecnt = 0;	524	fdchangecnt = 0;
385	}	525	}
386		526
387	static void	527	void inline_size
388	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
389	{	529	{
390	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
391	return;	531	return;
392		532
393	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
394		534
395	++fdchangecnt;	535	++fdchangecnt;
396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
398	}	538	}
399		539
400	static void	540	void inline_speed
401	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
402	{	542	{
403	struct ev_io *w;	543	ev_io *w;
404		544
405	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
406	{	546	{
407	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
408	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
409	}	549	}
410	}	550	}
411		551
412	static int	552	int inline_size
413	fd_valid (int fd)	553	fd_valid (int fd)
414	{	554	{
415	#ifdef WIN32	555	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
417	#else	557	#else
418	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
419	#endif	559	#endif
420	}	560	}
421		561
422	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
423	static void	563	static void noinline
424	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
425	{	565	{
426	int fd;	566	int fd;
427		567
428	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
430	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
431	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
432	}	572	}
433		573
434	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
435	static void	575	static void noinline
436	fd_enomem (EV_P)	576	fd_enomem (EV_P)
437	{	577	{
438	int fd;	578	int fd;
439		579
440	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
443	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
444	return;	584	return;
445	}	585	}
446	}	586	}
447		587
448	/* usually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
449	static void	589	static void noinline
450	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
451	{	591	{
452	int fd;	592	int fd;
453		593
454	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
460	}	600	}
461	}	601	}
462		602
463	/*****************************************************************************/	603	/*****************************************************************************/
464		604
465	static void	605	void inline_speed
466	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
467	{	607	{
468	WT w = heap [k];	608	WT w = heap [k];
469		609
470	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
477	heap [k] = w;	617	heap [k] = w;
478	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
479		619
480	}	620	}
481		621
482	static void	622	void inline_speed
483	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
484	{	624	{
485	WT w = heap [k];	625	WT w = heap [k];
486		626
487	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
501		641
502	heap [k] = w;	642	heap [k] = w;
503	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
504	}	644	}
505		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
		651	}
		652
506	/*****************************************************************************/	653	/*****************************************************************************/
507		654
508	typedef struct	655	typedef struct
509	{	656	{
510	WL head;	657	WL head;
…		…
514	static ANSIG *signals;	661	static ANSIG *signals;
515	static int signalmax;	662	static int signalmax;
516		663
517	static int sigpipe [2];	664	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	666	static ev_io sigev;
520		667
521	static void	668	void inline_size
522	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
523	{	670	{
524	while (count--)	671	while (count--)
525	{	672	{
526	base->head = 0;	673	base->head = 0;
…		…
531	}	678	}
532		679
533	static void	680	static void
534	sighandler (int signum)	681	sighandler (int signum)
535	{	682	{
536	#if WIN32	683	#if _WIN32
537	signal (signum, sighandler);	684	signal (signum, sighandler);
538	#endif	685	#endif
539		686
540	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
541		688
542	if (!gotsig)	689	if (!gotsig)
543	{	690	{
544	int old_errno = errno;	691	int old_errno = errno;
545	gotsig = 1;	692	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	694	errno = old_errno;
552	}	695	}
553	}	696	}
554		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 || signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
555	static void	718	static void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
557	{	720	{
558	WL w;
559	int signum;	721	int signum;
560		722
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	724	gotsig = 0;
567		725
568	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
570	{	728	ev_feed_signal_event (EV_A_ signum + 1);
571	signals [signum].gotsig = 0;
572
573	for (w = signals [signum].head; w; w = w->next)
574	event (EV_A_ (W)w, EV_SIGNAL);
575	}
576	}	729	}
577		730
578	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
579	siginit (EV_P)	744	siginit (EV_P)
580	{	745	{
581	#ifndef WIN32	746	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
583	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585	/* rather than sort out wether we really need nb, set it */
586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588	#endif
589		748
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	752	}
594		753
595	/*****************************************************************************/	754	/*****************************************************************************/
596		755
597	static struct ev_child *childs [PID_HASHSIZE];	756	static ev_child *childs [EV_PID_HASHSIZE];
598		757
599	#ifndef WIN32	758	#ifndef _WIN32
600		759
601	static struct ev_signal childev;	760	static ev_signal childev;
602		761
603	#ifndef WCONTINUED	762	void inline_speed
604	# define WCONTINUED 0
605	#endif
606
607	static void
608	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
609	{	764	{
610	struct ev_child *w;	765	ev_child *w;
611		766
612	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
613	if (w->pid == pid || !w->pid)	768	if (w->pid == pid || !w->pid)
614	{	769	{
615	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616	w->rpid = pid;	771	w->rpid = pid;
617	w->rstatus = status;	772	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	774	}
620	}	775	}
621		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
622	static void	781	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
624	{	783	{
625	int pid, status;	784	int pid, status;
626		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
629	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
630	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		796
632	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
633	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634	}
635	}	800	}
636		801
637	#endif	802	#endif
638		803
639	/*****************************************************************************/	804	/*****************************************************************************/
640		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
641	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
643	#endif	811	#endif
644	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
662	{	830	{
663	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
664	}	832	}
665		833
666	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
667	static int	835	int inline_size
668	enable_secure (void)	836	enable_secure (void)
669	{	837	{
670	#ifdef WIN32	838	#ifdef _WIN32
671	return 0;	839	return 0;
672	#else	840	#else
673	return getuid () != geteuid ()	841	return getuid () != geteuid ()
674	|| getgid () != getegid ();	842	|| getgid () != getegid ();
675	#endif	843	#endif
676	}	844	}
677		845
678	int	846	unsigned int
679	ev_method (EV_P)	847	ev_supported_backends (void)
680	{	848	{
681	return method;	849	unsigned int flags = 0;
682	}
683		850
684	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
686	{	862	{
687	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
688	{	896	{
689	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
690	{	898	{
691	struct timespec ts;	899	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	901	have_monotonic = 1;
694	}	902	}
695	#endif	903	#endif
696		904
697	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	906	mn_now = get_clock ();
699	now_floor = mn_now;	907	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
701		909
702	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		914
708	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
709	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
710	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711	#endif	926	#endif
712	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	929	#endif
715	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	932	#endif
718	#if EV_USE_POLL	933	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	935	#endif
721	#if EV_USE_SELECT	936	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	938	#endif
724		939
725	ev_watcher_init (&sigev, sigcb);	940	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	941	ev_set_priority (&sigev, EV_MAXPRI);
727	}	942	}
728	}	943	}
729		944
730	void	945	static void noinline
731	loop_destroy (EV_P)	946	loop_destroy (EV_P)
732	{	947	{
733	int i;	948	int i;
734		949
735	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	960	#endif
738	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	963	#endif
741	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	966	#endif
744	#if EV_USE_POLL	967	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	969	#endif
747	#if EV_USE_SELECT	970	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	972	#endif
750		973
751	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	975	array_free (pending, [i]);
753		976
754	/* have to use the microsoft-never-gets-it-right macro */	977	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	978	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	979	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	980	#if EV_PERIODIC_ENABLE
758	array_free_microshit (idle);	981	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	982	#endif
760	array_free_microshit (check);	983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
761		986
762	method = 0;	987	backend = 0;
763	}	988	}
764		989
765	static void	990	void inline_size infy_fork (EV_P);
		991
		992	void inline_size
766	loop_fork (EV_P)	993	loop_fork (EV_P)
767	{	994	{
		995	#if EV_USE_PORT
		996	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		997	#endif
		998	#if EV_USE_KQUEUE
		999	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1000	#endif
768	#if EV_USE_EPOLL	1001	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1002	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770	#endif	1003	#endif
771	#if EV_USE_KQUEUE	1004	#if EV_USE_INOTIFY
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1005	infy_fork (EV_A);
773	#endif	1006	#endif
774		1007
775	if (ev_is_active (&sigev))	1008	if (ev_is_active (&sigev))
776	{	1009	{
777	/* default loop */	1010	/* default loop */
…		…
790	postfork = 0;	1023	postfork = 0;
791	}	1024	}
792		1025
793	#if EV_MULTIPLICITY	1026	#if EV_MULTIPLICITY
794	struct ev_loop *	1027	struct ev_loop *
795	ev_loop_new (int methods)	1028	ev_loop_new (unsigned int flags)
796	{	1029	{
797	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1030	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798		1031
799	memset (loop, 0, sizeof (struct ev_loop));	1032	memset (loop, 0, sizeof (struct ev_loop));
800		1033
801	loop_init (EV_A_ methods);	1034	loop_init (EV_A_ flags);
802		1035
803	if (ev_method (EV_A))	1036	if (ev_backend (EV_A))
804	return loop;	1037	return loop;
805		1038
806	return 0;	1039	return 0;
807	}	1040	}
808		1041
…		…
820	}	1053	}
821		1054
822	#endif	1055	#endif
823		1056
824	#if EV_MULTIPLICITY	1057	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	1058	struct ev_loop *
		1059	ev_default_loop_init (unsigned int flags)
829	#else	1060	#else
830	static int default_loop;
831
832	int	1061	int
		1062	ev_default_loop (unsigned int flags)
833	#endif	1063	#endif
834	ev_default_loop (int methods)
835	{	1064	{
836	if (sigpipe [0] == sigpipe [1])	1065	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	1066	if (pipe (sigpipe))
838	return 0;	1067	return 0;
839		1068
840	if (!default_loop)	1069	if (!ev_default_loop_ptr)
841	{	1070	{
842	#if EV_MULTIPLICITY	1071	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	1073	#else
845	default_loop = 1;	1074	ev_default_loop_ptr = 1;
846	#endif	1075	#endif
847		1076
848	loop_init (EV_A_ methods);	1077	loop_init (EV_A_ flags);
849		1078
850	if (ev_method (EV_A))	1079	if (ev_backend (EV_A))
851	{	1080	{
852	siginit (EV_A);	1081	siginit (EV_A);
853		1082
854	#ifndef WIN32	1083	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1084	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1085	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1086	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1087	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1088	#endif
860	}	1089	}
861	else	1090	else
862	default_loop = 0;	1091	ev_default_loop_ptr = 0;
863	}	1092	}
864		1093
865	return default_loop;	1094	return ev_default_loop_ptr;
866	}	1095	}
867		1096
868	void	1097	void
869	ev_default_destroy (void)	1098	ev_default_destroy (void)
870	{	1099	{
871	#if EV_MULTIPLICITY	1100	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1101	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1102	#endif
874		1103
875	#ifndef WIN32	1104	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1105	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1106	ev_signal_stop (EV_A_ &childev);
878	#endif	1107	#endif
879		1108
880	ev_ref (EV_A); /* signal watcher */	1109	ev_ref (EV_A); /* signal watcher */
…		…
888		1117
889	void	1118	void
890	ev_default_fork (void)	1119	ev_default_fork (void)
891	{	1120	{
892	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1122	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1123	#endif
895		1124
896	if (method)	1125	if (backend)
897	postfork = 1;	1126	postfork = 1;
898	}	1127	}
899		1128
900	/*****************************************************************************/	1129	/*****************************************************************************/
901		1130
902	static void	1131	int inline_size
		1132	any_pending (EV_P)
		1133	{
		1134	int pri;
		1135
		1136	for (pri = NUMPRI; pri--; )
		1137	if (pendingcnt [pri])
		1138	return 1;
		1139
		1140	return 0;
		1141	}
		1142
		1143	void inline_speed
903	call_pending (EV_P)	1144	call_pending (EV_P)
904	{	1145	{
905	int pri;	1146	int pri;
906		1147
907	for (pri = NUMPRI; pri--; )	1148	for (pri = NUMPRI; pri--; )
908	while (pendingcnt [pri])	1149	while (pendingcnt [pri])
909	{	1150	{
910	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1151	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
911		1152
912	if (p->w)	1153	if (expect_true (p->w))
913	{	1154	{
		1155	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1156
914	p->w->pending = 0;	1157	p->w->pending = 0;
915	p->w->cb (EV_A_ p->w, p->events);	1158	EV_CB_INVOKE (p->w, p->events);
916	}	1159	}
917	}	1160	}
918	}	1161	}
919		1162
920	static void	1163	void inline_size
921	timers_reify (EV_P)	1164	timers_reify (EV_P)
922	{	1165	{
923	while (timercnt && ((WT)timers [0])->at <= mn_now)	1166	while (timercnt && ((WT)timers [0])->at <= mn_now)
924	{	1167	{
925	struct ev_timer *w = timers [0];	1168	ev_timer *w = timers [0];
926		1169
927	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1170	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
928		1171
929	/* first reschedule or stop timer */	1172	/* first reschedule or stop timer */
930	if (w->repeat)	1173	if (w->repeat)
931	{	1174	{
932	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1175	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1176
933	((WT)w)->at = mn_now + w->repeat;	1177	((WT)w)->at += w->repeat;
		1178	if (((WT)w)->at < mn_now)
		1179	((WT)w)->at = mn_now;
		1180
934	downheap ((WT *)timers, timercnt, 0);	1181	downheap ((WT *)timers, timercnt, 0);
935	}	1182	}
936	else	1183	else
937	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
938		1185
939	event (EV_A_ (W)w, EV_TIMEOUT);	1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
940	}	1187	}
941	}	1188	}
942		1189
943	static void	1190	#if EV_PERIODIC_ENABLE
		1191	void inline_size
944	periodics_reify (EV_P)	1192	periodics_reify (EV_P)
945	{	1193	{
946	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
947	{	1195	{
948	struct ev_periodic *w = periodics [0];	1196	ev_periodic *w = periodics [0];
949		1197
950	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1198	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
951		1199
952	/* first reschedule or stop timer */	1200	/* first reschedule or stop timer */
953	if (w->interval)	1201	if (w->reschedule_cb)
954	{	1202	{
		1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1205	downheap ((WT *)periodics, periodiccnt, 0);
		1206	}
		1207	else if (w->interval)
		1208	{
955	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
956	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
957	downheap ((WT *)periodics, periodiccnt, 0);	1211	downheap ((WT *)periodics, periodiccnt, 0);
958	}	1212	}
959	else	1213	else
960	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
961		1215
962	event (EV_A_ (W)w, EV_PERIODIC);	1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
963	}	1217	}
964	}	1218	}
965		1219
966	static void	1220	static void noinline
967	periodics_reschedule (EV_P)	1221	periodics_reschedule (EV_P)
968	{	1222	{
969	int i;	1223	int i;
970		1224
971	/* adjust periodics after time jump */	1225	/* adjust periodics after time jump */
972	for (i = 0; i < periodiccnt; ++i)	1226	for (i = 0; i < periodiccnt; ++i)
973	{	1227	{
974	struct ev_periodic *w = periodics [i];	1228	ev_periodic *w = periodics [i];
975		1229
		1230	if (w->reschedule_cb)
		1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
976	if (w->interval)	1232	else if (w->interval)
977	{
978	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
979
980	if (fabs (diff) >= 1e-4)
981	{
982	ev_periodic_stop (EV_A_ w);
983	ev_periodic_start (EV_A_ w);
984
985	i = 0; /* restart loop, inefficient, but time jumps should be rare */
986	}
987	}
988	}	1234	}
989	}
990		1235
991	inline int	1236	/* now rebuild the heap */
		1237	for (i = periodiccnt >> 1; i--; )
		1238	downheap ((WT *)periodics, periodiccnt, i);
		1239	}
		1240	#endif
		1241
		1242	int inline_size
992	time_update_monotonic (EV_P)	1243	time_update_monotonic (EV_P)
993	{	1244	{
994	mn_now = get_clock ();	1245	mn_now = get_clock ();
995		1246
996	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
997	{	1248	{
998	rt_now = rtmn_diff + mn_now;	1249	ev_rt_now = rtmn_diff + mn_now;
999	return 0;	1250	return 0;
1000	}	1251	}
1001	else	1252	else
1002	{	1253	{
1003	now_floor = mn_now;	1254	now_floor = mn_now;
1004	rt_now = ev_time ();	1255	ev_rt_now = ev_time ();
1005	return 1;	1256	return 1;
1006	}	1257	}
1007	}	1258	}
1008		1259
1009	static void	1260	void inline_size
1010	time_update (EV_P)	1261	time_update (EV_P)
1011	{	1262	{
1012	int i;	1263	int i;
1013		1264
1014	#if EV_USE_MONOTONIC	1265	#if EV_USE_MONOTONIC
…		…
1016	{	1267	{
1017	if (time_update_monotonic (EV_A))	1268	if (time_update_monotonic (EV_A))
1018	{	1269	{
1019	ev_tstamp odiff = rtmn_diff;	1270	ev_tstamp odiff = rtmn_diff;
1020		1271
1021	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1272	/* loop a few times, before making important decisions.
		1273	* on the choice of "4": one iteration isn't enough,
		1274	* in case we get preempted during the calls to
		1275	* ev_time and get_clock. a second call is almost guarenteed
		1276	* to succeed in that case, though. and looping a few more times
		1277	* doesn't hurt either as we only do this on time-jumps or
		1278	* in the unlikely event of getting preempted here.
		1279	*/
		1280	for (i = 4; --i; )
1022	{	1281	{
1023	rtmn_diff = rt_now - mn_now;	1282	rtmn_diff = ev_rt_now - mn_now;
1024		1283
1025	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1026	return; /* all is well */	1285	return; /* all is well */
1027		1286
1028	rt_now = ev_time ();	1287	ev_rt_now = ev_time ();
1029	mn_now = get_clock ();	1288	mn_now = get_clock ();
1030	now_floor = mn_now;	1289	now_floor = mn_now;
1031	}	1290	}
1032		1291
		1292	# if EV_PERIODIC_ENABLE
1033	periodics_reschedule (EV_A);	1293	periodics_reschedule (EV_A);
		1294	# endif
1034	/* no timer adjustment, as the monotonic clock doesn't jump */	1295	/* no timer adjustment, as the monotonic clock doesn't jump */
1035	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1036	}	1297	}
1037	}	1298	}
1038	else	1299	else
1039	#endif	1300	#endif
1040	{	1301	{
1041	rt_now = ev_time ();	1302	ev_rt_now = ev_time ();
1042		1303
1043	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1304	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1044	{	1305	{
		1306	#if EV_PERIODIC_ENABLE
1045	periodics_reschedule (EV_A);	1307	periodics_reschedule (EV_A);
		1308	#endif
1046		1309
1047	/* adjust timers. this is easy, as the offset is the same for all */	1310	/* adjust timers. this is easy, as the offset is the same for all */
1048	for (i = 0; i < timercnt; ++i)	1311	for (i = 0; i < timercnt; ++i)
1049	((WT)timers [i])->at += rt_now - mn_now;	1312	((WT)timers [i])->at += ev_rt_now - mn_now;
1050	}	1313	}
1051		1314
1052	mn_now = rt_now;	1315	mn_now = ev_rt_now;
1053	}	1316	}
1054	}	1317	}
1055		1318
1056	void	1319	void
1057	ev_ref (EV_P)	1320	ev_ref (EV_P)
…		…
1068	static int loop_done;	1331	static int loop_done;
1069		1332
1070	void	1333	void
1071	ev_loop (EV_P_ int flags)	1334	ev_loop (EV_P_ int flags)
1072	{	1335	{
1073	double block;
1074	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1336	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1337	? EVUNLOOP_ONE
		1338	: EVUNLOOP_CANCEL;
1075		1339
1076	do	1340	while (activecnt)
1077	{	1341	{
		1342	/* we might have forked, so reify kernel state if necessary */
		1343	#if EV_FORK_ENABLE
		1344	if (expect_false (postfork))
		1345	if (forkcnt)
		1346	{
		1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1348	call_pending (EV_A);
		1349	}
		1350	#endif
		1351
1078	/* queue check watchers (and execute them) */	1352	/* queue check watchers (and execute them) */
1079	if (expect_false (preparecnt))	1353	if (expect_false (preparecnt))
1080	{	1354	{
1081	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1082	call_pending (EV_A);	1356	call_pending (EV_A);
…		…
1088		1362
1089	/* update fd-related kernel structures */	1363	/* update fd-related kernel structures */
1090	fd_reify (EV_A);	1364	fd_reify (EV_A);
1091		1365
1092	/* calculate blocking time */	1366	/* calculate blocking time */
		1367	{
		1368	double block;
1093		1369
1094	/* we only need this for !monotonic clockor timers, but as we basically	1370	if (flags & EVLOOP_NONBLOCK || idlecnt)
1095	always have timers, we just calculate it always */	1371	block = 0.; /* do not block at all */
		1372	else
		1373	{
		1374	/* update time to cancel out callback processing overhead */
1096	#if EV_USE_MONOTONIC	1375	#if EV_USE_MONOTONIC
1097	if (expect_true (have_monotonic))	1376	if (expect_true (have_monotonic))
1098	time_update_monotonic (EV_A);	1377	time_update_monotonic (EV_A);
1099	else	1378	else
1100	#endif	1379	#endif
1101	{	1380	{
1102	rt_now = ev_time ();	1381	ev_rt_now = ev_time ();
1103	mn_now = rt_now;	1382	mn_now = ev_rt_now;
1104	}	1383	}
1105		1384
1106	if (flags & EVLOOP_NONBLOCK || idlecnt)
1107	block = 0.;
1108	else
1109	{
1110	block = MAX_BLOCKTIME;	1385	block = MAX_BLOCKTIME;
1111		1386
1112	if (timercnt)	1387	if (timercnt)
1113	{	1388	{
1114	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1115	if (block > to) block = to;	1390	if (block > to) block = to;
1116	}	1391	}
1117		1392
		1393	#if EV_PERIODIC_ENABLE
1118	if (periodiccnt)	1394	if (periodiccnt)
1119	{	1395	{
1120	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1121	if (block > to) block = to;	1397	if (block > to) block = to;
1122	}	1398	}
		1399	#endif
1123		1400
1124	if (block < 0.) block = 0.;	1401	if (expect_false (block < 0.)) block = 0.;
1125	}	1402	}
1126		1403
1127	method_poll (EV_A_ block);	1404	backend_poll (EV_A_ block);
		1405	}
1128		1406
1129	/* update rt_now, do magic */	1407	/* update ev_rt_now, do magic */
1130	time_update (EV_A);	1408	time_update (EV_A);
1131		1409
1132	/* queue pending timers and reschedule them */	1410	/* queue pending timers and reschedule them */
1133	timers_reify (EV_A); /* relative timers called last */	1411	timers_reify (EV_A); /* relative timers called last */
		1412	#if EV_PERIODIC_ENABLE
1134	periodics_reify (EV_A); /* absolute timers called first */	1413	periodics_reify (EV_A); /* absolute timers called first */
		1414	#endif
1135		1415
1136	/* queue idle watchers unless io or timers are pending */	1416	/* queue idle watchers unless other events are pending */
1137	if (!pendingcnt)	1417	if (idlecnt && !any_pending (EV_A))
1138	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1139		1419
1140	/* queue check watchers, to be executed first */	1420	/* queue check watchers, to be executed first */
1141	if (checkcnt)	1421	if (expect_false (checkcnt))
1142	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1143		1423
1144	call_pending (EV_A);	1424	call_pending (EV_A);
1145	}
1146	while (activecnt && !loop_done);
1147		1425
1148	if (loop_done != 2)	1426	if (expect_false (loop_done))
1149	loop_done = 0;	1427	break;
		1428	}
		1429
		1430	if (loop_done == EVUNLOOP_ONE)
		1431	loop_done = EVUNLOOP_CANCEL;
1150	}	1432	}
1151		1433
1152	void	1434	void
1153	ev_unloop (EV_P_ int how)	1435	ev_unloop (EV_P_ int how)
1154	{	1436	{
1155	loop_done = how;	1437	loop_done = how;
1156	}	1438	}
1157		1439
1158	/*****************************************************************************/	1440	/*****************************************************************************/
1159		1441
1160	inline void	1442	void inline_size
1161	wlist_add (WL *head, WL elem)	1443	wlist_add (WL *head, WL elem)
1162	{	1444	{
1163	elem->next = *head;	1445	elem->next = *head;
1164	*head = elem;	1446	*head = elem;
1165	}	1447	}
1166		1448
1167	inline void	1449	void inline_size
1168	wlist_del (WL *head, WL elem)	1450	wlist_del (WL *head, WL elem)
1169	{	1451	{
1170	while (*head)	1452	while (*head)
1171	{	1453	{
1172	if (*head == elem)	1454	if (*head == elem)
…		…
1177		1459
1178	head = &(*head)->next;	1460	head = &(*head)->next;
1179	}	1461	}
1180	}	1462	}
1181		1463
1182	inline void	1464	void inline_speed
1183	ev_clear_pending (EV_P_ W w)	1465	ev_clear_pending (EV_P_ W w)
1184	{	1466	{
1185	if (w->pending)	1467	if (w->pending)
1186	{	1468	{
1187	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1188	w->pending = 0;	1470	w->pending = 0;
1189	}	1471	}
1190	}	1472	}
1191		1473
1192	inline void	1474	void inline_speed
1193	ev_start (EV_P_ W w, int active)	1475	ev_start (EV_P_ W w, int active)
1194	{	1476	{
1195	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1196	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1197		1479
1198	w->active = active;	1480	w->active = active;
1199	ev_ref (EV_A);	1481	ev_ref (EV_A);
1200	}	1482	}
1201		1483
1202	inline void	1484	void inline_size
1203	ev_stop (EV_P_ W w)	1485	ev_stop (EV_P_ W w)
1204	{	1486	{
1205	ev_unref (EV_A);	1487	ev_unref (EV_A);
1206	w->active = 0;	1488	w->active = 0;
1207	}	1489	}
1208		1490
1209	/*****************************************************************************/	1491	/*****************************************************************************/
1210		1492
1211	void	1493	void
1212	ev_io_start (EV_P_ struct ev_io *w)	1494	ev_io_start (EV_P_ ev_io *w)
1213	{	1495	{
1214	int fd = w->fd;	1496	int fd = w->fd;
1215		1497
1216	if (ev_is_active (w))	1498	if (expect_false (ev_is_active (w)))
1217	return;	1499	return;
1218		1500
1219	assert (("ev_io_start called with negative fd", fd >= 0));	1501	assert (("ev_io_start called with negative fd", fd >= 0));
1220		1502
1221	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
…		…
1224		1506
1225	fd_change (EV_A_ fd);	1507	fd_change (EV_A_ fd);
1226	}	1508	}
1227		1509
1228	void	1510	void
1229	ev_io_stop (EV_P_ struct ev_io *w)	1511	ev_io_stop (EV_P_ ev_io *w)
1230	{	1512	{
1231	ev_clear_pending (EV_A_ (W)w);	1513	ev_clear_pending (EV_A_ (W)w);
1232	if (!ev_is_active (w))	1514	if (expect_false (!ev_is_active (w)))
1233	return;	1515	return;
		1516
		1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1234		1518
1235	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1236	ev_stop (EV_A_ (W)w);	1520	ev_stop (EV_A_ (W)w);
1237		1521
1238	fd_change (EV_A_ w->fd);	1522	fd_change (EV_A_ w->fd);
1239	}	1523	}
1240		1524
1241	void	1525	void
1242	ev_timer_start (EV_P_ struct ev_timer *w)	1526	ev_timer_start (EV_P_ ev_timer *w)
1243	{	1527	{
1244	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1245	return;	1529	return;
1246		1530
1247	((WT)w)->at += mn_now;	1531	((WT)w)->at += mn_now;
1248		1532
1249	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1250		1534
1251	ev_start (EV_A_ (W)w, ++timercnt);	1535	ev_start (EV_A_ (W)w, ++timercnt);
1252	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1253	timers [timercnt - 1] = w;	1537	timers [timercnt - 1] = w;
1254	upheap ((WT *)timers, timercnt - 1);	1538	upheap ((WT *)timers, timercnt - 1);
1255		1539
		1540	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1541	}
		1542
		1543	void
		1544	ev_timer_stop (EV_P_ ev_timer *w)
		1545	{
		1546	ev_clear_pending (EV_A_ (W)w);
		1547	if (expect_false (!ev_is_active (w)))
		1548	return;
		1549
1256	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1257	}
1258		1551
1259	void	1552	{
1260	ev_timer_stop (EV_P_ struct ev_timer *w)	1553	int active = ((W)w)->active;
1261	{
1262	ev_clear_pending (EV_A_ (W)w);
1263	if (!ev_is_active (w))
1264	return;
1265		1554
1266	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1555	if (expect_true (--active < --timercnt))
1267
1268	if (((W)w)->active < timercnt--)
1269	{	1556	{
1270	timers [((W)w)->active - 1] = timers [timercnt];	1557	timers [active] = timers [timercnt];
1271	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)timers, timercnt, active);
1272	}	1559	}
		1560	}
1273		1561
1274	((WT)w)->at = w->repeat;	1562	((WT)w)->at -= mn_now;
1275		1563
1276	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1277	}	1565	}
1278		1566
1279	void	1567	void
1280	ev_timer_again (EV_P_ struct ev_timer *w)	1568	ev_timer_again (EV_P_ ev_timer *w)
1281	{	1569	{
1282	if (ev_is_active (w))	1570	if (ev_is_active (w))
1283	{	1571	{
1284	if (w->repeat)	1572	if (w->repeat)
1285	{	1573	{
1286	((WT)w)->at = mn_now + w->repeat;	1574	((WT)w)->at = mn_now + w->repeat;
1287	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1288	}	1576	}
1289	else	1577	else
1290	ev_timer_stop (EV_A_ w);	1578	ev_timer_stop (EV_A_ w);
1291	}	1579	}
1292	else if (w->repeat)	1580	else if (w->repeat)
		1581	{
		1582	w->at = w->repeat;
1293	ev_timer_start (EV_A_ w);	1583	ev_timer_start (EV_A_ w);
		1584	}
1294	}	1585	}
1295		1586
		1587	#if EV_PERIODIC_ENABLE
1296	void	1588	void
1297	ev_periodic_start (EV_P_ struct ev_periodic *w)	1589	ev_periodic_start (EV_P_ ev_periodic *w)
1298	{	1590	{
1299	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1300	return;	1592	return;
1301		1593
		1594	if (w->reschedule_cb)
		1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1596	else if (w->interval)
		1597	{
1302	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1303
1304	/* this formula differs from the one in periodic_reify because we do not always round up */	1599	/* this formula differs from the one in periodic_reify because we do not always round up */
1305	if (w->interval)
1306	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1601	}
1307		1602
1308	ev_start (EV_A_ (W)w, ++periodiccnt);	1603	ev_start (EV_A_ (W)w, ++periodiccnt);
1309	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1310	periodics [periodiccnt - 1] = w;	1605	periodics [periodiccnt - 1] = w;
1311	upheap ((WT *)periodics, periodiccnt - 1);	1606	upheap ((WT *)periodics, periodiccnt - 1);
1312		1607
		1608	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1609	}
		1610
		1611	void
		1612	ev_periodic_stop (EV_P_ ev_periodic *w)
		1613	{
		1614	ev_clear_pending (EV_A_ (W)w);
		1615	if (expect_false (!ev_is_active (w)))
		1616	return;
		1617
1313	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1314	}
1315		1619
1316	void	1620	{
1317	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1621	int active = ((W)w)->active;
1318	{
1319	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))
1321	return;
1322		1622
1323	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1623	if (expect_true (--active < --periodiccnt))
1324
1325	if (((W)w)->active < periodiccnt--)
1326	{	1624	{
1327	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1625	periodics [active] = periodics [periodiccnt];
1328	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1626	adjustheap ((WT *)periodics, periodiccnt, active);
1329	}	1627	}
		1628	}
1330		1629
1331	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1332	}	1631	}
1333		1632
1334	void	1633	void
1335	ev_idle_start (EV_P_ struct ev_idle *w)	1634	ev_periodic_again (EV_P_ ev_periodic *w)
1336	{	1635	{
1337	if (ev_is_active (w))	1636	/* TODO: use adjustheap and recalculation */
1338	return;
1339
1340	ev_start (EV_A_ (W)w, ++idlecnt);
1341	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1342	idles [idlecnt - 1] = w;
1343	}
1344
1345	void
1346	ev_idle_stop (EV_P_ struct ev_idle *w)
1347	{
1348	ev_clear_pending (EV_A_ (W)w);
1349	if (ev_is_active (w))
1350	return;
1351
1352	idles [((W)w)->active - 1] = idles [--idlecnt];
1353	ev_stop (EV_A_ (W)w);	1637	ev_periodic_stop (EV_A_ w);
		1638	ev_periodic_start (EV_A_ w);
1354	}	1639	}
1355		1640	#endif
1356	void
1357	ev_prepare_start (EV_P_ struct ev_prepare *w)
1358	{
1359	if (ev_is_active (w))
1360	return;
1361
1362	ev_start (EV_A_ (W)w, ++preparecnt);
1363	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1364	prepares [preparecnt - 1] = w;
1365	}
1366
1367	void
1368	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1369	{
1370	ev_clear_pending (EV_A_ (W)w);
1371	if (ev_is_active (w))
1372	return;
1373
1374	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1375	ev_stop (EV_A_ (W)w);
1376	}
1377
1378	void
1379	ev_check_start (EV_P_ struct ev_check *w)
1380	{
1381	if (ev_is_active (w))
1382	return;
1383
1384	ev_start (EV_A_ (W)w, ++checkcnt);
1385	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1386	checks [checkcnt - 1] = w;
1387	}
1388
1389	void
1390	ev_check_stop (EV_P_ struct ev_check *w)
1391	{
1392	ev_clear_pending (EV_A_ (W)w);
1393	if (ev_is_active (w))
1394	return;
1395
1396	checks [((W)w)->active - 1] = checks [--checkcnt];
1397	ev_stop (EV_A_ (W)w);
1398	}
1399		1641
1400	#ifndef SA_RESTART	1642	#ifndef SA_RESTART
1401	# define SA_RESTART 0	1643	# define SA_RESTART 0
1402	#endif	1644	#endif
1403		1645
1404	void	1646	void
1405	ev_signal_start (EV_P_ struct ev_signal *w)	1647	ev_signal_start (EV_P_ ev_signal *w)
1406	{	1648	{
1407	#if EV_MULTIPLICITY	1649	#if EV_MULTIPLICITY
1408	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1409	#endif	1651	#endif
1410	if (ev_is_active (w))	1652	if (expect_false (ev_is_active (w)))
1411	return;	1653	return;
1412		1654
1413	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1414		1656
1415	ev_start (EV_A_ (W)w, 1);	1657	ev_start (EV_A_ (W)w, 1);
1416	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1417	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1418		1660
1419	if (!((WL)w)->next)	1661	if (!((WL)w)->next)
1420	{	1662	{
1421	#if WIN32	1663	#if _WIN32
1422	signal (w->signum, sighandler);	1664	signal (w->signum, sighandler);
1423	#else	1665	#else
1424	struct sigaction sa;	1666	struct sigaction sa;
1425	sa.sa_handler = sighandler;	1667	sa.sa_handler = sighandler;
1426	sigfillset (&sa.sa_mask);	1668	sigfillset (&sa.sa_mask);
…		…
1429	#endif	1671	#endif
1430	}	1672	}
1431	}	1673	}
1432		1674
1433	void	1675	void
1434	ev_signal_stop (EV_P_ struct ev_signal *w)	1676	ev_signal_stop (EV_P_ ev_signal *w)
1435	{	1677	{
1436	ev_clear_pending (EV_A_ (W)w);	1678	ev_clear_pending (EV_A_ (W)w);
1437	if (!ev_is_active (w))	1679	if (expect_false (!ev_is_active (w)))
1438	return;	1680	return;
1439		1681
1440	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1441	ev_stop (EV_A_ (W)w);	1683	ev_stop (EV_A_ (W)w);
1442		1684
1443	if (!signals [w->signum - 1].head)	1685	if (!signals [w->signum - 1].head)
1444	signal (w->signum, SIG_DFL);	1686	signal (w->signum, SIG_DFL);
1445	}	1687	}
1446		1688
1447	void	1689	void
1448	ev_child_start (EV_P_ struct ev_child *w)	1690	ev_child_start (EV_P_ ev_child *w)
1449	{	1691	{
1450	#if EV_MULTIPLICITY	1692	#if EV_MULTIPLICITY
1451	assert (("child watchers are only supported in the default loop", loop == default_loop));	1693	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1452	#endif	1694	#endif
1453	if (ev_is_active (w))	1695	if (expect_false (ev_is_active (w)))
1454	return;	1696	return;
1455		1697
1456	ev_start (EV_A_ (W)w, 1);	1698	ev_start (EV_A_ (W)w, 1);
1457	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1458	}	1700	}
1459		1701
1460	void	1702	void
1461	ev_child_stop (EV_P_ struct ev_child *w)	1703	ev_child_stop (EV_P_ ev_child *w)
1462	{	1704	{
1463	ev_clear_pending (EV_A_ (W)w);	1705	ev_clear_pending (EV_A_ (W)w);
1464	if (ev_is_active (w))	1706	if (expect_false (!ev_is_active (w)))
1465	return;	1707	return;
1466		1708
1467	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1468	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1469	}	1711	}
1470		1712
		1713	#if EV_STAT_ENABLE
		1714
		1715	# ifdef _WIN32
		1716	# undef lstat
		1717	# define lstat(a,b) _stati64 (a,b)
		1718	# endif
		1719
		1720	#define DEF_STAT_INTERVAL 5.0074891
		1721	#define MIN_STAT_INTERVAL 0.1074891
		1722
		1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1724
		1725	#if EV_USE_INOTIFY
		1726	# define EV_INOTIFY_BUFSIZE 8192
		1727
		1728	static void noinline
		1729	infy_add (EV_P_ ev_stat *w)
		1730	{
		1731	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1732
		1733	if (w->wd < 0)
		1734	{
		1735	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1736
		1737	/* monitor some parent directory for speedup hints */
		1738	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1739	{
		1740	char path [4096];
		1741	strcpy (path, w->path);
		1742
		1743	do
		1744	{
		1745	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1746	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1747
		1748	char *pend = strrchr (path, '/');
		1749
		1750	if (!pend)
		1751	break; /* whoops, no '/', complain to your admin */
		1752
		1753	*pend = 0;
		1754	w->wd = inotify_add_watch (fs_fd, path, mask);
		1755	}
		1756	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1757	}
		1758	}
		1759	else
		1760	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1761
		1762	if (w->wd >= 0)
		1763	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1764	}
		1765
		1766	static void noinline
		1767	infy_del (EV_P_ ev_stat *w)
		1768	{
		1769	int slot;
		1770	int wd = w->wd;
		1771
		1772	if (wd < 0)
		1773	return;
		1774
		1775	w->wd = -2;
		1776	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1777	wlist_del (&fs_hash [slot].head, (WL)w);
		1778
		1779	/* remove this watcher, if others are watching it, they will rearm */
		1780	inotify_rm_watch (fs_fd, wd);
		1781	}
		1782
		1783	static void noinline
		1784	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1785	{
		1786	if (slot < 0)
		1787	/* overflow, need to check for all hahs slots */
		1788	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1789	infy_wd (EV_A_ slot, wd, ev);
		1790	else
		1791	{
		1792	WL w_;
		1793
		1794	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1795	{
		1796	ev_stat *w = (ev_stat *)w_;
		1797	w_ = w_->next; /* lets us remove this watcher and all before it */
		1798
		1799	if (w->wd == wd || wd == -1)
		1800	{
		1801	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1802	{
		1803	w->wd = -1;
		1804	infy_add (EV_A_ w); /* re-add, no matter what */
		1805	}
		1806
		1807	stat_timer_cb (EV_A_ &w->timer, 0);
		1808	}
		1809	}
		1810	}
		1811	}
		1812
		1813	static void
		1814	infy_cb (EV_P_ ev_io *w, int revents)
		1815	{
		1816	char buf [EV_INOTIFY_BUFSIZE];
		1817	struct inotify_event *ev = (struct inotify_event *)buf;
		1818	int ofs;
		1819	int len = read (fs_fd, buf, sizeof (buf));
		1820
		1821	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1822	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1823	}
		1824
		1825	void inline_size
		1826	infy_init (EV_P)
		1827	{
		1828	if (fs_fd != -2)
		1829	return;
		1830
		1831	fs_fd = inotify_init ();
		1832
		1833	if (fs_fd >= 0)
		1834	{
		1835	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1836	ev_set_priority (&fs_w, EV_MAXPRI);
		1837	ev_io_start (EV_A_ &fs_w);
		1838	}
		1839	}
		1840
		1841	void inline_size
		1842	infy_fork (EV_P)
		1843	{
		1844	int slot;
		1845
		1846	if (fs_fd < 0)
		1847	return;
		1848
		1849	close (fs_fd);
		1850	fs_fd = inotify_init ();
		1851
		1852	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1853	{
		1854	WL w_ = fs_hash [slot].head;
		1855	fs_hash [slot].head = 0;
		1856
		1857	while (w_)
		1858	{
		1859	ev_stat *w = (ev_stat *)w_;
		1860	w_ = w_->next; /* lets us add this watcher */
		1861
		1862	w->wd = -1;
		1863
		1864	if (fs_fd >= 0)
		1865	infy_add (EV_A_ w); /* re-add, no matter what */
		1866	else
		1867	ev_timer_start (EV_A_ &w->timer);
		1868	}
		1869
		1870	}
		1871	}
		1872
		1873	#endif
		1874
		1875	void
		1876	ev_stat_stat (EV_P_ ev_stat *w)
		1877	{
		1878	if (lstat (w->path, &w->attr) < 0)
		1879	w->attr.st_nlink = 0;
		1880	else if (!w->attr.st_nlink)
		1881	w->attr.st_nlink = 1;
		1882	}
		1883
		1884	void noinline
		1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1886	{
		1887	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1888
		1889	/* we copy this here each the time so that */
		1890	/* prev has the old value when the callback gets invoked */
		1891	w->prev = w->attr;
		1892	ev_stat_stat (EV_A_ w);
		1893
		1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1895	{
		1896	#if EV_USE_INOTIFY
		1897	infy_del (EV_A_ w);
		1898	infy_add (EV_A_ w);
		1899	ev_stat_stat (EV_A_ w); /* avoid race... */
		1900	#endif
		1901
		1902	ev_feed_event (EV_A_ w, EV_STAT);
		1903	}
		1904	}
		1905
		1906	void
		1907	ev_stat_start (EV_P_ ev_stat *w)
		1908	{
		1909	if (expect_false (ev_is_active (w)))
		1910	return;
		1911
		1912	/* since we use memcmp, we need to clear any padding data etc. */
		1913	memset (&w->prev, 0, sizeof (ev_statdata));
		1914	memset (&w->attr, 0, sizeof (ev_statdata));
		1915
		1916	ev_stat_stat (EV_A_ w);
		1917
		1918	if (w->interval < MIN_STAT_INTERVAL)
		1919	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1920
		1921	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1922	ev_set_priority (&w->timer, ev_priority (w));
		1923
		1924	#if EV_USE_INOTIFY
		1925	infy_init (EV_A);
		1926
		1927	if (fs_fd >= 0)
		1928	infy_add (EV_A_ w);
		1929	else
		1930	#endif
		1931	ev_timer_start (EV_A_ &w->timer);
		1932
		1933	ev_start (EV_A_ (W)w, 1);
		1934	}
		1935
		1936	void
		1937	ev_stat_stop (EV_P_ ev_stat *w)
		1938	{
		1939	ev_clear_pending (EV_A_ (W)w);
		1940	if (expect_false (!ev_is_active (w)))
		1941	return;
		1942
		1943	#if EV_USE_INOTIFY
		1944	infy_del (EV_A_ w);
		1945	#endif
		1946	ev_timer_stop (EV_A_ &w->timer);
		1947
		1948	ev_stop (EV_A_ (W)w);
		1949	}
		1950	#endif
		1951
		1952	void
		1953	ev_idle_start (EV_P_ ev_idle *w)
		1954	{
		1955	if (expect_false (ev_is_active (w)))
		1956	return;
		1957
		1958	ev_start (EV_A_ (W)w, ++idlecnt);
		1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1960	idles [idlecnt - 1] = w;
		1961	}
		1962
		1963	void
		1964	ev_idle_stop (EV_P_ ev_idle *w)
		1965	{
		1966	ev_clear_pending (EV_A_ (W)w);
		1967	if (expect_false (!ev_is_active (w)))
		1968	return;
		1969
		1970	{
		1971	int active = ((W)w)->active;
		1972	idles [active - 1] = idles [--idlecnt];
		1973	((W)idles [active - 1])->active = active;
		1974	}
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978
		1979	void
		1980	ev_prepare_start (EV_P_ ev_prepare *w)
		1981	{
		1982	if (expect_false (ev_is_active (w)))
		1983	return;
		1984
		1985	ev_start (EV_A_ (W)w, ++preparecnt);
		1986	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1987	prepares [preparecnt - 1] = w;
		1988	}
		1989
		1990	void
		1991	ev_prepare_stop (EV_P_ ev_prepare *w)
		1992	{
		1993	ev_clear_pending (EV_A_ (W)w);
		1994	if (expect_false (!ev_is_active (w)))
		1995	return;
		1996
		1997	{
		1998	int active = ((W)w)->active;
		1999	prepares [active - 1] = prepares [--preparecnt];
		2000	((W)prepares [active - 1])->active = active;
		2001	}
		2002
		2003	ev_stop (EV_A_ (W)w);
		2004	}
		2005
		2006	void
		2007	ev_check_start (EV_P_ ev_check *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	ev_start (EV_A_ (W)w, ++checkcnt);
		2013	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2014	checks [checkcnt - 1] = w;
		2015	}
		2016
		2017	void
		2018	ev_check_stop (EV_P_ ev_check *w)
		2019	{
		2020	ev_clear_pending (EV_A_ (W)w);
		2021	if (expect_false (!ev_is_active (w)))
		2022	return;
		2023
		2024	{
		2025	int active = ((W)w)->active;
		2026	checks [active - 1] = checks [--checkcnt];
		2027	((W)checks [active - 1])->active = active;
		2028	}
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032
		2033	#if EV_EMBED_ENABLE
		2034	void noinline
		2035	ev_embed_sweep (EV_P_ ev_embed *w)
		2036	{
		2037	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2038	}
		2039
		2040	static void
		2041	embed_cb (EV_P_ ev_io *io, int revents)
		2042	{
		2043	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2044
		2045	if (ev_cb (w))
		2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2047	else
		2048	ev_embed_sweep (loop, w);
		2049	}
		2050
		2051	void
		2052	ev_embed_start (EV_P_ ev_embed *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
		2055	return;
		2056
		2057	{
		2058	struct ev_loop *loop = w->loop;
		2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2061	}
		2062
		2063	ev_set_priority (&w->io, ev_priority (w));
		2064	ev_io_start (EV_A_ &w->io);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_embed_stop (EV_P_ ev_embed *w)
		2071	{
		2072	ev_clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	ev_io_stop (EV_A_ &w->io);
		2077
		2078	ev_stop (EV_A_ (W)w);
		2079	}
		2080	#endif
		2081
		2082	#if EV_FORK_ENABLE
		2083	void
		2084	ev_fork_start (EV_P_ ev_fork *w)
		2085	{
		2086	if (expect_false (ev_is_active (w)))
		2087	return;
		2088
		2089	ev_start (EV_A_ (W)w, ++forkcnt);
		2090	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2091	forks [forkcnt - 1] = w;
		2092	}
		2093
		2094	void
		2095	ev_fork_stop (EV_P_ ev_fork *w)
		2096	{
		2097	ev_clear_pending (EV_A_ (W)w);
		2098	if (expect_false (!ev_is_active (w)))
		2099	return;
		2100
		2101	{
		2102	int active = ((W)w)->active;
		2103	forks [active - 1] = forks [--forkcnt];
		2104	((W)forks [active - 1])->active = active;
		2105	}
		2106
		2107	ev_stop (EV_A_ (W)w);
		2108	}
		2109	#endif
		2110
1471	/*****************************************************************************/	2111	/*****************************************************************************/
1472		2112
1473	struct ev_once	2113	struct ev_once
1474	{	2114	{
1475	struct ev_io io;	2115	ev_io io;
1476	struct ev_timer to;	2116	ev_timer to;
1477	void (*cb)(int revents, void *arg);	2117	void (*cb)(int revents, void *arg);
1478	void *arg;	2118	void *arg;
1479	};	2119	};
1480		2120
1481	static void	2121	static void
…		…
1490		2130
1491	cb (revents, arg);	2131	cb (revents, arg);
1492	}	2132	}
1493		2133
1494	static void	2134	static void
1495	once_cb_io (EV_P_ struct ev_io *w, int revents)	2135	once_cb_io (EV_P_ ev_io *w, int revents)
1496	{	2136	{
1497	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2137	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1498	}	2138	}
1499		2139
1500	static void	2140	static void
1501	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2141	once_cb_to (EV_P_ ev_timer *w, int revents)
1502	{	2142	{
1503	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2143	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1504	}	2144	}
1505		2145
1506	void	2146	void
1507	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2147	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1508	{	2148	{
1509	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2149	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1510		2150
1511	if (!once)	2151	if (expect_false (!once))
		2152	{
1512	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1513	else	2154	return;
1514	{	2155	}
		2156
1515	once->cb = cb;	2157	once->cb = cb;
1516	once->arg = arg;	2158	once->arg = arg;
1517		2159
1518	ev_watcher_init (&once->io, once_cb_io);	2160	ev_init (&once->io, once_cb_io);
1519	if (fd >= 0)	2161	if (fd >= 0)
1520	{	2162	{
1521	ev_io_set (&once->io, fd, events);	2163	ev_io_set (&once->io, fd, events);
1522	ev_io_start (EV_A_ &once->io);	2164	ev_io_start (EV_A_ &once->io);
1523	}	2165	}
1524		2166
1525	ev_watcher_init (&once->to, once_cb_to);	2167	ev_init (&once->to, once_cb_to);
1526	if (timeout >= 0.)	2168	if (timeout >= 0.)
1527	{	2169	{
1528	ev_timer_set (&once->to, timeout, 0.);	2170	ev_timer_set (&once->to, timeout, 0.);
1529	ev_timer_start (EV_A_ &once->to);	2171	ev_timer_start (EV_A_ &once->to);
1530	}
1531	}	2172	}
1532	}	2173	}
1533		2174
		2175	#ifdef __cplusplus
		2176	}
		2177	#endif
		2178

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