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Comparing libev/ev.c (file contents):
Revision 1.77 by root, Thu Nov 8 00:44:17 2007 UTC vs.
Revision 1.161 by root, Sat Dec 1 23:43:45 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 */
455	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
456	if (anfds [fd].events)	595	if (anfds [fd].events)
457	{	596	{
458	anfds [fd].events = 0;	597	anfds [fd].events = 0;
459	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
460	}	599	}
461	}	600	}
462		601
463	/*****************************************************************************/	602	/*****************************************************************************/
464		603
465	static void	604	void inline_speed
466	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
467	{	606	{
468	WT w = heap [k];	607	WT w = heap [k];
469		608
470	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
477	heap [k] = w;	616	heap [k] = w;
478	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
479		618
480	}	619	}
481		620
482	static void	621	void inline_speed
483	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
484	{	623	{
485	WT w = heap [k];	624	WT w = heap [k];
486		625
487	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
501		640
502	heap [k] = w;	641	heap [k] = w;
503	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
504	}	643	}
505		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
		650	}
		651
506	/*****************************************************************************/	652	/*****************************************************************************/
507		653
508	typedef struct	654	typedef struct
509	{	655	{
510	WL head;	656	WL head;
…		…
514	static ANSIG *signals;	660	static ANSIG *signals;
515	static int signalmax;	661	static int signalmax;
516		662
517	static int sigpipe [2];	663	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	665	static ev_io sigev;
520		666
521	static void	667	void inline_size
522	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
523	{	669	{
524	while (count--)	670	while (count--)
525	{	671	{
526	base->head = 0;	672	base->head = 0;
…		…
531	}	677	}
532		678
533	static void	679	static void
534	sighandler (int signum)	680	sighandler (int signum)
535	{	681	{
536	#if WIN32	682	#if _WIN32
537	signal (signum, sighandler);	683	signal (signum, sighandler);
538	#endif	684	#endif
539		685
540	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
541		687
542	if (!gotsig)	688	if (!gotsig)
543	{	689	{
544	int old_errno = errno;	690	int old_errno = errno;
545	gotsig = 1;	691	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	693	errno = old_errno;
552	}	694	}
553	}	695	}
554		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
555	static void	717	static void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
557	{	719	{
558	WL w;
559	int signum;	720	int signum;
560		721
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	723	gotsig = 0;
567		724
568	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
570	{	727	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	}	728	}
577		729
578	static void	730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
579	siginit (EV_P)	743	siginit (EV_P)
580	{	744	{
581	#ifndef WIN32	745	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	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		747
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	751	}
594		752
595	/*****************************************************************************/	753	/*****************************************************************************/
596		754
597	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
598		756
599	#ifndef WIN32	757	#ifndef _WIN32
600		758
601	static struct ev_signal childev;	759	static ev_signal childev;
602		760
603	#ifndef WCONTINUED	761	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)	762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
609	{	763	{
610	struct ev_child *w;	764	ev_child *w;
611		765
612	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
613	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
614	{	768	{
615	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616	w->rpid = pid;	770	w->rpid = pid;
617	w->rstatus = status;	771	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	773	}
620	}	774	}
621		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
622	static void	780	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
624	{	782	{
625	int pid, status;	783	int pid, status;
626		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
629	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
630	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		795
632	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
633	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634	}
635	}	799	}
636		800
637	#endif	801	#endif
638		802
639	/*****************************************************************************/	803	/*****************************************************************************/
640		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
641	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
643	#endif	810	#endif
644	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
662	{	829	{
663	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
664	}	831	}
665		832
666	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
667	static int	834	int inline_size
668	enable_secure (void)	835	enable_secure (void)
669	{	836	{
670	#ifdef WIN32	837	#ifdef _WIN32
671	return 0;	838	return 0;
672	#else	839	#else
673	return getuid () != geteuid ()	840	return getuid () != geteuid ()
674	|| getgid () != getegid ();	841	|| getgid () != getegid ();
675	#endif	842	#endif
676	}	843	}
677		844
678	int	845	unsigned int
679	ev_method (EV_P)	846	ev_supported_backends (void)
680	{	847	{
681	return method;	848	unsigned int flags = 0;
682	}
683		849
684	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685	loop_init (EV_P_ int methods)	851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
686	{	861	{
687	if (!method)	862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
688	{	895	{
689	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
690	{	897	{
691	struct timespec ts;	898	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	900	have_monotonic = 1;
694	}	901	}
695	#endif	902	#endif
696		903
697	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	905	mn_now = get_clock ();
699	now_floor = mn_now;	906	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
701		908
702	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
		914
		915	if (!(flags & EVFLAG_NOENV)
		916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		919
708	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
709	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
710	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711	#endif	931	#endif
712	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	934	#endif
715	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	937	#endif
718	#if EV_USE_POLL	938	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	940	#endif
721	#if EV_USE_SELECT	941	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	943	#endif
724		944
725	ev_watcher_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
727	}	947	}
728	}	948	}
729		949
730	void	950	static void noinline
731	loop_destroy (EV_P)	951	loop_destroy (EV_P)
732	{	952	{
733	int i;	953	int i;
734		954
735	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	965	#endif
738	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	968	#endif
741	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	971	#endif
744	#if EV_USE_POLL	972	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	974	#endif
747	#if EV_USE_SELECT	975	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	977	#endif
750		978
751	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	980	array_free (pending, [i]);
753		981
754	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
758	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	987	#endif
760	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
761		991
762	method = 0;	992	backend = 0;
763	}	993	}
764		994
765	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
766	loop_fork (EV_P)	998	loop_fork (EV_P)
767	{	999	{
		1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
768	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770	#endif	1008	#endif
771	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
773	#endif	1011	#endif
774		1012
775	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
776	{	1014	{
777	/* default loop */	1015	/* default loop */
…		…
790	postfork = 0;	1028	postfork = 0;
791	}	1029	}
792		1030
793	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
794	struct ev_loop *	1032	struct ev_loop *
795	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
796	{	1034	{
797	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1035	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798		1036
799	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
800		1038
801	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
802		1040
803	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
804	return loop;	1042	return loop;
805		1043
806	return 0;	1044	return 0;
807	}	1045	}
808		1046
…		…
820	}	1058	}
821		1059
822	#endif	1060	#endif
823		1061
824	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
829	#else	1065	#else
830	static int default_loop;
831
832	int	1066	int
		1067	ev_default_loop (unsigned int flags)
833	#endif	1068	#endif
834	ev_default_loop (int methods)
835	{	1069	{
836	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
838	return 0;	1072	return 0;
839		1073
840	if (!default_loop)	1074	if (!ev_default_loop_ptr)
841	{	1075	{
842	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	1078	#else
845	default_loop = 1;	1079	ev_default_loop_ptr = 1;
846	#endif	1080	#endif
847		1081
848	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
849		1083
850	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
851	{	1085	{
852	siginit (EV_A);	1086	siginit (EV_A);
853		1087
854	#ifndef WIN32	1088	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1093	#endif
860	}	1094	}
861	else	1095	else
862	default_loop = 0;	1096	ev_default_loop_ptr = 0;
863	}	1097	}
864		1098
865	return default_loop;	1099	return ev_default_loop_ptr;
866	}	1100	}
867		1101
868	void	1102	void
869	ev_default_destroy (void)	1103	ev_default_destroy (void)
870	{	1104	{
871	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1107	#endif
874		1108
875	#ifndef WIN32	1109	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
878	#endif	1112	#endif
879		1113
880	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
888		1122
889	void	1123	void
890	ev_default_fork (void)	1124	ev_default_fork (void)
891	{	1125	{
892	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1128	#endif
895		1129
896	if (method)	1130	if (backend)
897	postfork = 1;	1131	postfork = 1;
898	}	1132	}
899		1133
900	/*****************************************************************************/	1134	/*****************************************************************************/
901		1135
902	static int	1136	int inline_size
903	any_pending (EV_P)	1137	any_pending (EV_P)
904	{	1138	{
905	int pri;	1139	int pri;
906		1140
907	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
909	return 1;	1143	return 1;
910		1144
911	return 0;	1145	return 0;
912	}	1146	}
913		1147
914	static void	1148	void inline_speed
915	call_pending (EV_P)	1149	call_pending (EV_P)
916	{	1150	{
917	int pri;	1151	int pri;
918		1152
919	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
920	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
921	{	1155	{
922	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923		1157
924	if (p->w)	1158	if (expect_true (p->w))
925	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
926	p->w->pending = 0;	1162	p->w->pending = 0;
927	p->w->cb (EV_A_ p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
928	}	1164	}
929	}	1165	}
930	}	1166	}
931		1167
932	static void	1168	void inline_size
933	timers_reify (EV_P)	1169	timers_reify (EV_P)
934	{	1170	{
935	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
936	{	1172	{
937	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
938		1174
939	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
940		1176
941	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
942	if (w->repeat)	1178	if (w->repeat)
943	{	1179	{
944	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
945	((WT)w)->at = mn_now + w->repeat;	1182	((WT)w)->at += w->repeat;
		1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
946	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
947	}	1187	}
948	else	1188	else
949	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950		1190
951	event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952	}	1192	}
953	}	1193	}
954		1194
955	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
956	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
957	{	1198	{
958	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959	{	1200	{
960	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
961		1202
962	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
963		1204
964	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
965	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
966	{	1207	{
967	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
968
969	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
970	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
971	}	1211	}
972	else if (w->interval)	1212	else if (w->interval)
973	{	1213	{
974	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
975	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
976	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
977	}	1217	}
978	else	1218	else
979	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
980		1220
981	event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
982	}	1222	}
983	}	1223	}
984		1224
985	static void	1225	static void noinline
986	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
987	{	1227	{
988	int i;	1228	int i;
989		1229
990	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
991	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
992	{	1232	{
993	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
994		1234
995	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
996	((WT)w)->at = w->reschedule_cb (w, rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
997	else if (w->interval)	1237	else if (w->interval)
998	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
999	}	1239	}
1000		1240
1001	/* now rebuild the heap */	1241	/* now rebuild the heap */
1002	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1003	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1004	}	1244	}
		1245	#endif
1005		1246
1006	inline int	1247	int inline_size
1007	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1008	{	1249	{
1009	mn_now = get_clock ();	1250	mn_now = get_clock ();
1010		1251
1011	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1012	{	1253	{
1013	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
1014	return 0;	1255	return 0;
1015	}	1256	}
1016	else	1257	else
1017	{	1258	{
1018	now_floor = mn_now;	1259	now_floor = mn_now;
1019	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1020	return 1;	1261	return 1;
1021	}	1262	}
1022	}	1263	}
1023		1264
1024	static void	1265	void inline_size
1025	time_update (EV_P)	1266	time_update (EV_P)
1026	{	1267	{
1027	int i;	1268	int i;
1028		1269
1029	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1031	{	1272	{
1032	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1033	{	1274	{
1034	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1035		1276
1036	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
1037	{	1286	{
1038	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1039		1288
1040	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1041	return; /* all is well */	1290	return; /* all is well */
1042		1291
1043	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1044	mn_now = get_clock ();	1293	mn_now = get_clock ();
1045	now_floor = mn_now;	1294	now_floor = mn_now;
1046	}	1295	}
1047		1296
		1297	# if EV_PERIODIC_ENABLE
1048	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1049	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1050	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1051	}	1302	}
1052	}	1303	}
1053	else	1304	else
1054	#endif	1305	#endif
1055	{	1306	{
1056	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1057		1308
1058	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1059	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1060	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1061		1314
1062	/* adjust timers. this is easy, as the offset is the same for all */	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
1063	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1064	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1065	}	1318	}
1066		1319
1067	mn_now = rt_now;	1320	mn_now = ev_rt_now;
1068	}	1321	}
1069	}	1322	}
1070		1323
1071	void	1324	void
1072	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
1083	static int loop_done;	1336	static int loop_done;
1084		1337
1085	void	1338	void
1086	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1087	{	1340	{
1088	double block;
1089	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
		1344
		1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1090		1346
1091	do	1347	do
1092	{	1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
1093	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1094	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1095	{	1370	{
1096	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1097	call_pending (EV_A);	1372	call_pending (EV_A);
1098	}	1373	}
1099		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
1100	/* we might have forked, so reify kernel state if necessary */	1378	/* we might have forked, so reify kernel state if necessary */
1101	if (expect_false (postfork))	1379	if (expect_false (postfork))
1102	loop_fork (EV_A);	1380	loop_fork (EV_A);
1103		1381
1104	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
1105	fd_reify (EV_A);	1383	fd_reify (EV_A);
1106		1384
1107	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
1108		1388
1109	/* we only need this for !monotonic clock or timers, but as we basically	1389	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1110	always have timers, we just calculate it always */	1390	block = 0.; /* do not block at all */
		1391	else
		1392	{
		1393	/* update time to cancel out callback processing overhead */
1111	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
1112	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
1113	time_update_monotonic (EV_A);	1396	time_update_monotonic (EV_A);
1114	else	1397	else
1115	#endif	1398	#endif
1116	{	1399	{
1117	rt_now = ev_time ();	1400	ev_rt_now = ev_time ();
1118	mn_now = rt_now;	1401	mn_now = ev_rt_now;
1119	}	1402	}
1120		1403
1121	if (flags & EVLOOP_NONBLOCK || idlecnt)
1122	block = 0.;
1123	else
1124	{
1125	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
1126		1405
1127	if (timercnt)	1406	if (timercnt)
1128	{	1407	{
1129	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1130	if (block > to) block = to;	1409	if (block > to) block = to;
1131	}	1410	}
1132		1411
		1412	#if EV_PERIODIC_ENABLE
1133	if (periodiccnt)	1413	if (periodiccnt)
1134	{	1414	{
1135	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1136	if (block > to) block = to;	1416	if (block > to) block = to;
1137	}	1417	}
		1418	#endif
1138		1419
1139	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
1140	}	1421	}
1141		1422
1142	method_poll (EV_A_ block);	1423	backend_poll (EV_A_ block);
		1424	}
1143		1425
1144	/* update rt_now, do magic */	1426	/* update ev_rt_now, do magic */
1145	time_update (EV_A);	1427	time_update (EV_A);
1146		1428
1147	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
1148	timers_reify (EV_A); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
1149	periodics_reify (EV_A); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
1150		1434
1151	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
1152	if (idlecnt && !any_pending (EV_A))	1436	if (idlecnt && !any_pending (EV_A))
1153	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1154		1438
1155	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
1156	if (checkcnt)	1440	if (expect_false (checkcnt))
1157	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1158		1442
1159	call_pending (EV_A);	1443	call_pending (EV_A);
		1444
1160	}	1445	}
1161	while (activecnt && !loop_done);	1446	while (expect_true (activecnt && !loop_done));
1162		1447
1163	if (loop_done != 2)	1448	if (loop_done == EVUNLOOP_ONE)
1164	loop_done = 0;	1449	loop_done = EVUNLOOP_CANCEL;
1165	}	1450	}
1166		1451
1167	void	1452	void
1168	ev_unloop (EV_P_ int how)	1453	ev_unloop (EV_P_ int how)
1169	{	1454	{
1170	loop_done = how;	1455	loop_done = how;
1171	}	1456	}
1172		1457
1173	/*****************************************************************************/	1458	/*****************************************************************************/
1174		1459
1175	inline void	1460	void inline_size
1176	wlist_add (WL *head, WL elem)	1461	wlist_add (WL *head, WL elem)
1177	{	1462	{
1178	elem->next = *head;	1463	elem->next = *head;
1179	*head = elem;	1464	*head = elem;
1180	}	1465	}
1181		1466
1182	inline void	1467	void inline_size
1183	wlist_del (WL *head, WL elem)	1468	wlist_del (WL *head, WL elem)
1184	{	1469	{
1185	while (*head)	1470	while (*head)
1186	{	1471	{
1187	if (*head == elem)	1472	if (*head == elem)
…		…
1192		1477
1193	head = &(*head)->next;	1478	head = &(*head)->next;
1194	}	1479	}
1195	}	1480	}
1196		1481
1197	inline void	1482	void inline_speed
1198	ev_clear_pending (EV_P_ W w)	1483	ev_clear_pending (EV_P_ W w)
1199	{	1484	{
1200	if (w->pending)	1485	if (w->pending)
1201	{	1486	{
1202	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1487	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1203	w->pending = 0;	1488	w->pending = 0;
1204	}	1489	}
1205	}	1490	}
1206		1491
1207	inline void	1492	void inline_speed
1208	ev_start (EV_P_ W w, int active)	1493	ev_start (EV_P_ W w, int active)
1209	{	1494	{
1210	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1495	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1211	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1496	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1212		1497
1213	w->active = active;	1498	w->active = active;
1214	ev_ref (EV_A);	1499	ev_ref (EV_A);
1215	}	1500	}
1216		1501
1217	inline void	1502	void inline_size
1218	ev_stop (EV_P_ W w)	1503	ev_stop (EV_P_ W w)
1219	{	1504	{
1220	ev_unref (EV_A);	1505	ev_unref (EV_A);
1221	w->active = 0;	1506	w->active = 0;
1222	}	1507	}
1223		1508
1224	/*****************************************************************************/	1509	/*****************************************************************************/
1225		1510
1226	void	1511	void
1227	ev_io_start (EV_P_ struct ev_io *w)	1512	ev_io_start (EV_P_ ev_io *w)
1228	{	1513	{
1229	int fd = w->fd;	1514	int fd = w->fd;
1230		1515
1231	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1232	return;	1517	return;
1233		1518
1234	assert (("ev_io_start called with negative fd", fd >= 0));	1519	assert (("ev_io_start called with negative fd", fd >= 0));
1235		1520
1236	ev_start (EV_A_ (W)w, 1);	1521	ev_start (EV_A_ (W)w, 1);
…		…
1239		1524
1240	fd_change (EV_A_ fd);	1525	fd_change (EV_A_ fd);
1241	}	1526	}
1242		1527
1243	void	1528	void
1244	ev_io_stop (EV_P_ struct ev_io *w)	1529	ev_io_stop (EV_P_ ev_io *w)
1245	{	1530	{
1246	ev_clear_pending (EV_A_ (W)w);	1531	ev_clear_pending (EV_A_ (W)w);
1247	if (!ev_is_active (w))	1532	if (expect_false (!ev_is_active (w)))
1248	return;	1533	return;
		1534
		1535	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1249		1536
1250	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1537	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1251	ev_stop (EV_A_ (W)w);	1538	ev_stop (EV_A_ (W)w);
1252		1539
1253	fd_change (EV_A_ w->fd);	1540	fd_change (EV_A_ w->fd);
1254	}	1541	}
1255		1542
1256	void	1543	void
1257	ev_timer_start (EV_P_ struct ev_timer *w)	1544	ev_timer_start (EV_P_ ev_timer *w)
1258	{	1545	{
1259	if (ev_is_active (w))	1546	if (expect_false (ev_is_active (w)))
1260	return;	1547	return;
1261		1548
1262	((WT)w)->at += mn_now;	1549	((WT)w)->at += mn_now;
1263		1550
1264	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1551	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1265		1552
1266	ev_start (EV_A_ (W)w, ++timercnt);	1553	ev_start (EV_A_ (W)w, ++timercnt);
1267	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1554	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1268	timers [timercnt - 1] = w;	1555	timers [timercnt - 1] = w;
1269	upheap ((WT *)timers, timercnt - 1);	1556	upheap ((WT *)timers, timercnt - 1);
1270		1557
		1558	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1559	}
		1560
		1561	void
		1562	ev_timer_stop (EV_P_ ev_timer *w)
		1563	{
		1564	ev_clear_pending (EV_A_ (W)w);
		1565	if (expect_false (!ev_is_active (w)))
		1566	return;
		1567
1271	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1568	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1272	}
1273		1569
1274	void	1570	{
1275	ev_timer_stop (EV_P_ struct ev_timer *w)	1571	int active = ((W)w)->active;
1276	{
1277	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))
1279	return;
1280		1572
1281	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1573	if (expect_true (--active < --timercnt))
1282
1283	if (((W)w)->active < timercnt--)
1284	{	1574	{
1285	timers [((W)w)->active - 1] = timers [timercnt];	1575	timers [active] = timers [timercnt];
1286	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1576	adjustheap ((WT *)timers, timercnt, active);
1287	}	1577	}
		1578	}
1288		1579
1289	((WT)w)->at = w->repeat;	1580	((WT)w)->at -= mn_now;
1290		1581
1291	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1292	}	1583	}
1293		1584
1294	void	1585	void
1295	ev_timer_again (EV_P_ struct ev_timer *w)	1586	ev_timer_again (EV_P_ ev_timer *w)
1296	{	1587	{
1297	if (ev_is_active (w))	1588	if (ev_is_active (w))
1298	{	1589	{
1299	if (w->repeat)	1590	if (w->repeat)
1300	{	1591	{
1301	((WT)w)->at = mn_now + w->repeat;	1592	((WT)w)->at = mn_now + w->repeat;
1302	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1593	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1303	}	1594	}
1304	else	1595	else
1305	ev_timer_stop (EV_A_ w);	1596	ev_timer_stop (EV_A_ w);
1306	}	1597	}
1307	else if (w->repeat)	1598	else if (w->repeat)
		1599	{
		1600	w->at = w->repeat;
1308	ev_timer_start (EV_A_ w);	1601	ev_timer_start (EV_A_ w);
		1602	}
1309	}	1603	}
1310		1604
		1605	#if EV_PERIODIC_ENABLE
1311	void	1606	void
1312	ev_periodic_start (EV_P_ struct ev_periodic *w)	1607	ev_periodic_start (EV_P_ ev_periodic *w)
1313	{	1608	{
1314	if (ev_is_active (w))	1609	if (expect_false (ev_is_active (w)))
1315	return;	1610	return;
1316		1611
1317	if (w->reschedule_cb)	1612	if (w->reschedule_cb)
1318	((WT)w)->at = w->reschedule_cb (w, rt_now);	1613	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1319	else if (w->interval)	1614	else if (w->interval)
1320	{	1615	{
1321	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1616	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1322	/* this formula differs from the one in periodic_reify because we do not always round up */	1617	/* this formula differs from the one in periodic_reify because we do not always round up */
1323	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1618	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1324	}	1619	}
1325		1620
1326	ev_start (EV_A_ (W)w, ++periodiccnt);	1621	ev_start (EV_A_ (W)w, ++periodiccnt);
1327	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1622	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1328	periodics [periodiccnt - 1] = w;	1623	periodics [periodiccnt - 1] = w;
1329	upheap ((WT *)periodics, periodiccnt - 1);	1624	upheap ((WT *)periodics, periodiccnt - 1);
1330		1625
		1626	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1627	}
		1628
		1629	void
		1630	ev_periodic_stop (EV_P_ ev_periodic *w)
		1631	{
		1632	ev_clear_pending (EV_A_ (W)w);
		1633	if (expect_false (!ev_is_active (w)))
		1634	return;
		1635
1331	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1636	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1332	}
1333		1637
1334	void	1638	{
1335	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1639	int active = ((W)w)->active;
1336	{
1337	ev_clear_pending (EV_A_ (W)w);
1338	if (!ev_is_active (w))
1339	return;
1340		1640
1341	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1641	if (expect_true (--active < --periodiccnt))
1342
1343	if (((W)w)->active < periodiccnt--)
1344	{	1642	{
1345	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1643	periodics [active] = periodics [periodiccnt];
1346	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1644	adjustheap ((WT *)periodics, periodiccnt, active);
1347	}	1645	}
		1646	}
1348		1647
1349	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1350	}	1649	}
1351		1650
1352	void	1651	void
1353	ev_periodic_again (EV_P_ struct ev_periodic *w)	1652	ev_periodic_again (EV_P_ ev_periodic *w)
1354	{	1653	{
		1654	/* TODO: use adjustheap and recalculation */
1355	ev_periodic_stop (EV_A_ w);	1655	ev_periodic_stop (EV_A_ w);
1356	ev_periodic_start (EV_A_ w);	1656	ev_periodic_start (EV_A_ w);
1357	}	1657	}
1358		1658	#endif
1359	void
1360	ev_idle_start (EV_P_ struct ev_idle *w)
1361	{
1362	if (ev_is_active (w))
1363	return;
1364
1365	ev_start (EV_A_ (W)w, ++idlecnt);
1366	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1367	idles [idlecnt - 1] = w;
1368	}
1369
1370	void
1371	ev_idle_stop (EV_P_ struct ev_idle *w)
1372	{
1373	ev_clear_pending (EV_A_ (W)w);
1374	if (ev_is_active (w))
1375	return;
1376
1377	idles [((W)w)->active - 1] = idles [--idlecnt];
1378	ev_stop (EV_A_ (W)w);
1379	}
1380
1381	void
1382	ev_prepare_start (EV_P_ struct ev_prepare *w)
1383	{
1384	if (ev_is_active (w))
1385	return;
1386
1387	ev_start (EV_A_ (W)w, ++preparecnt);
1388	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1389	prepares [preparecnt - 1] = w;
1390	}
1391
1392	void
1393	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1394	{
1395	ev_clear_pending (EV_A_ (W)w);
1396	if (ev_is_active (w))
1397	return;
1398
1399	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1400	ev_stop (EV_A_ (W)w);
1401	}
1402
1403	void
1404	ev_check_start (EV_P_ struct ev_check *w)
1405	{
1406	if (ev_is_active (w))
1407	return;
1408
1409	ev_start (EV_A_ (W)w, ++checkcnt);
1410	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1411	checks [checkcnt - 1] = w;
1412	}
1413
1414	void
1415	ev_check_stop (EV_P_ struct ev_check *w)
1416	{
1417	ev_clear_pending (EV_A_ (W)w);
1418	if (ev_is_active (w))
1419	return;
1420
1421	checks [((W)w)->active - 1] = checks [--checkcnt];
1422	ev_stop (EV_A_ (W)w);
1423	}
1424		1659
1425	#ifndef SA_RESTART	1660	#ifndef SA_RESTART
1426	# define SA_RESTART 0	1661	# define SA_RESTART 0
1427	#endif	1662	#endif
1428		1663
1429	void	1664	void
1430	ev_signal_start (EV_P_ struct ev_signal *w)	1665	ev_signal_start (EV_P_ ev_signal *w)
1431	{	1666	{
1432	#if EV_MULTIPLICITY	1667	#if EV_MULTIPLICITY
1433	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1668	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1434	#endif	1669	#endif
1435	if (ev_is_active (w))	1670	if (expect_false (ev_is_active (w)))
1436	return;	1671	return;
1437		1672
1438	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1673	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1439		1674
1440	ev_start (EV_A_ (W)w, 1);	1675	ev_start (EV_A_ (W)w, 1);
1441	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1676	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1442	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1443		1678
1444	if (!((WL)w)->next)	1679	if (!((WL)w)->next)
1445	{	1680	{
1446	#if WIN32	1681	#if _WIN32
1447	signal (w->signum, sighandler);	1682	signal (w->signum, sighandler);
1448	#else	1683	#else
1449	struct sigaction sa;	1684	struct sigaction sa;
1450	sa.sa_handler = sighandler;	1685	sa.sa_handler = sighandler;
1451	sigfillset (&sa.sa_mask);	1686	sigfillset (&sa.sa_mask);
…		…
1454	#endif	1689	#endif
1455	}	1690	}
1456	}	1691	}
1457		1692
1458	void	1693	void
1459	ev_signal_stop (EV_P_ struct ev_signal *w)	1694	ev_signal_stop (EV_P_ ev_signal *w)
1460	{	1695	{
1461	ev_clear_pending (EV_A_ (W)w);	1696	ev_clear_pending (EV_A_ (W)w);
1462	if (!ev_is_active (w))	1697	if (expect_false (!ev_is_active (w)))
1463	return;	1698	return;
1464		1699
1465	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1700	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1466	ev_stop (EV_A_ (W)w);	1701	ev_stop (EV_A_ (W)w);
1467		1702
1468	if (!signals [w->signum - 1].head)	1703	if (!signals [w->signum - 1].head)
1469	signal (w->signum, SIG_DFL);	1704	signal (w->signum, SIG_DFL);
1470	}	1705	}
1471		1706
1472	void	1707	void
1473	ev_child_start (EV_P_ struct ev_child *w)	1708	ev_child_start (EV_P_ ev_child *w)
1474	{	1709	{
1475	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1476	assert (("child watchers are only supported in the default loop", loop == default_loop));	1711	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1477	#endif	1712	#endif
1478	if (ev_is_active (w))	1713	if (expect_false (ev_is_active (w)))
1479	return;	1714	return;
1480		1715
1481	ev_start (EV_A_ (W)w, 1);	1716	ev_start (EV_A_ (W)w, 1);
1482	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1717	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1483	}	1718	}
1484		1719
1485	void	1720	void
1486	ev_child_stop (EV_P_ struct ev_child *w)	1721	ev_child_stop (EV_P_ ev_child *w)
1487	{	1722	{
1488	ev_clear_pending (EV_A_ (W)w);	1723	ev_clear_pending (EV_A_ (W)w);
1489	if (ev_is_active (w))	1724	if (expect_false (!ev_is_active (w)))
1490	return;	1725	return;
1491		1726
1492	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1727	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1493	ev_stop (EV_A_ (W)w);	1728	ev_stop (EV_A_ (W)w);
1494	}	1729	}
1495		1730
		1731	#if EV_STAT_ENABLE
		1732
		1733	# ifdef _WIN32
		1734	# undef lstat
		1735	# define lstat(a,b) _stati64 (a,b)
		1736	# endif
		1737
		1738	#define DEF_STAT_INTERVAL 5.0074891
		1739	#define MIN_STAT_INTERVAL 0.1074891
		1740
		1741	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1742
		1743	#if EV_USE_INOTIFY
		1744	# define EV_INOTIFY_BUFSIZE 8192
		1745
		1746	static void noinline
		1747	infy_add (EV_P_ ev_stat *w)
		1748	{
		1749	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);
		1750
		1751	if (w->wd < 0)
		1752	{
		1753	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1754
		1755	/* monitor some parent directory for speedup hints */
		1756	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1757	{
		1758	char path [4096];
		1759	strcpy (path, w->path);
		1760
		1761	do
		1762	{
		1763	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1764	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1765
		1766	char *pend = strrchr (path, '/');
		1767
		1768	if (!pend)
		1769	break; /* whoops, no '/', complain to your admin */
		1770
		1771	*pend = 0;
		1772	w->wd = inotify_add_watch (fs_fd, path, mask);
		1773	}
		1774	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1775	}
		1776	}
		1777	else
		1778	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1779
		1780	if (w->wd >= 0)
		1781	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1782	}
		1783
		1784	static void noinline
		1785	infy_del (EV_P_ ev_stat *w)
		1786	{
		1787	int slot;
		1788	int wd = w->wd;
		1789
		1790	if (wd < 0)
		1791	return;
		1792
		1793	w->wd = -2;
		1794	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1795	wlist_del (&fs_hash [slot].head, (WL)w);
		1796
		1797	/* remove this watcher, if others are watching it, they will rearm */
		1798	inotify_rm_watch (fs_fd, wd);
		1799	}
		1800
		1801	static void noinline
		1802	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1803	{
		1804	if (slot < 0)
		1805	/* overflow, need to check for all hahs slots */
		1806	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1807	infy_wd (EV_A_ slot, wd, ev);
		1808	else
		1809	{
		1810	WL w_;
		1811
		1812	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1813	{
		1814	ev_stat *w = (ev_stat *)w_;
		1815	w_ = w_->next; /* lets us remove this watcher and all before it */
		1816
		1817	if (w->wd == wd || wd == -1)
		1818	{
		1819	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1820	{
		1821	w->wd = -1;
		1822	infy_add (EV_A_ w); /* re-add, no matter what */
		1823	}
		1824
		1825	stat_timer_cb (EV_A_ &w->timer, 0);
		1826	}
		1827	}
		1828	}
		1829	}
		1830
		1831	static void
		1832	infy_cb (EV_P_ ev_io *w, int revents)
		1833	{
		1834	char buf [EV_INOTIFY_BUFSIZE];
		1835	struct inotify_event *ev = (struct inotify_event *)buf;
		1836	int ofs;
		1837	int len = read (fs_fd, buf, sizeof (buf));
		1838
		1839	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1840	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1841	}
		1842
		1843	void inline_size
		1844	infy_init (EV_P)
		1845	{
		1846	if (fs_fd != -2)
		1847	return;
		1848
		1849	fs_fd = inotify_init ();
		1850
		1851	if (fs_fd >= 0)
		1852	{
		1853	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1854	ev_set_priority (&fs_w, EV_MAXPRI);
		1855	ev_io_start (EV_A_ &fs_w);
		1856	}
		1857	}
		1858
		1859	void inline_size
		1860	infy_fork (EV_P)
		1861	{
		1862	int slot;
		1863
		1864	if (fs_fd < 0)
		1865	return;
		1866
		1867	close (fs_fd);
		1868	fs_fd = inotify_init ();
		1869
		1870	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1871	{
		1872	WL w_ = fs_hash [slot].head;
		1873	fs_hash [slot].head = 0;
		1874
		1875	while (w_)
		1876	{
		1877	ev_stat *w = (ev_stat *)w_;
		1878	w_ = w_->next; /* lets us add this watcher */
		1879
		1880	w->wd = -1;
		1881
		1882	if (fs_fd >= 0)
		1883	infy_add (EV_A_ w); /* re-add, no matter what */
		1884	else
		1885	ev_timer_start (EV_A_ &w->timer);
		1886	}
		1887
		1888	}
		1889	}
		1890
		1891	#endif
		1892
		1893	void
		1894	ev_stat_stat (EV_P_ ev_stat *w)
		1895	{
		1896	if (lstat (w->path, &w->attr) < 0)
		1897	w->attr.st_nlink = 0;
		1898	else if (!w->attr.st_nlink)
		1899	w->attr.st_nlink = 1;
		1900	}
		1901
		1902	static void noinline
		1903	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1904	{
		1905	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1906
		1907	/* we copy this here each the time so that */
		1908	/* prev has the old value when the callback gets invoked */
		1909	w->prev = w->attr;
		1910	ev_stat_stat (EV_A_ w);
		1911
		1912	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1913	if (
		1914	w->prev.st_dev != w->attr.st_dev
		1915	|| w->prev.st_ino != w->attr.st_ino
		1916	|| w->prev.st_mode != w->attr.st_mode
		1917	|| w->prev.st_nlink != w->attr.st_nlink
		1918	|| w->prev.st_uid != w->attr.st_uid
		1919	|| w->prev.st_gid != w->attr.st_gid
		1920	|| w->prev.st_rdev != w->attr.st_rdev
		1921	|| w->prev.st_size != w->attr.st_size
		1922	|| w->prev.st_atime != w->attr.st_atime
		1923	|| w->prev.st_mtime != w->attr.st_mtime
		1924	|| w->prev.st_ctime != w->attr.st_ctime
		1925	) {
		1926	#if EV_USE_INOTIFY
		1927	infy_del (EV_A_ w);
		1928	infy_add (EV_A_ w);
		1929	ev_stat_stat (EV_A_ w); /* avoid race... */
		1930	#endif
		1931
		1932	ev_feed_event (EV_A_ w, EV_STAT);
		1933	}
		1934	}
		1935
		1936	void
		1937	ev_stat_start (EV_P_ ev_stat *w)
		1938	{
		1939	if (expect_false (ev_is_active (w)))
		1940	return;
		1941
		1942	/* since we use memcmp, we need to clear any padding data etc. */
		1943	memset (&w->prev, 0, sizeof (ev_statdata));
		1944	memset (&w->attr, 0, sizeof (ev_statdata));
		1945
		1946	ev_stat_stat (EV_A_ w);
		1947
		1948	if (w->interval < MIN_STAT_INTERVAL)
		1949	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1950
		1951	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1952	ev_set_priority (&w->timer, ev_priority (w));
		1953
		1954	#if EV_USE_INOTIFY
		1955	infy_init (EV_A);
		1956
		1957	if (fs_fd >= 0)
		1958	infy_add (EV_A_ w);
		1959	else
		1960	#endif
		1961	ev_timer_start (EV_A_ &w->timer);
		1962
		1963	ev_start (EV_A_ (W)w, 1);
		1964	}
		1965
		1966	void
		1967	ev_stat_stop (EV_P_ ev_stat *w)
		1968	{
		1969	ev_clear_pending (EV_A_ (W)w);
		1970	if (expect_false (!ev_is_active (w)))
		1971	return;
		1972
		1973	#if EV_USE_INOTIFY
		1974	infy_del (EV_A_ w);
		1975	#endif
		1976	ev_timer_stop (EV_A_ &w->timer);
		1977
		1978	ev_stop (EV_A_ (W)w);
		1979	}
		1980	#endif
		1981
		1982	void
		1983	ev_idle_start (EV_P_ ev_idle *w)
		1984	{
		1985	if (expect_false (ev_is_active (w)))
		1986	return;
		1987
		1988	ev_start (EV_A_ (W)w, ++idlecnt);
		1989	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1990	idles [idlecnt - 1] = w;
		1991	}
		1992
		1993	void
		1994	ev_idle_stop (EV_P_ ev_idle *w)
		1995	{
		1996	ev_clear_pending (EV_A_ (W)w);
		1997	if (expect_false (!ev_is_active (w)))
		1998	return;
		1999
		2000	{
		2001	int active = ((W)w)->active;
		2002	idles [active - 1] = idles [--idlecnt];
		2003	((W)idles [active - 1])->active = active;
		2004	}
		2005
		2006	ev_stop (EV_A_ (W)w);
		2007	}
		2008
		2009	void
		2010	ev_prepare_start (EV_P_ ev_prepare *w)
		2011	{
		2012	if (expect_false (ev_is_active (w)))
		2013	return;
		2014
		2015	ev_start (EV_A_ (W)w, ++preparecnt);
		2016	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2017	prepares [preparecnt - 1] = w;
		2018	}
		2019
		2020	void
		2021	ev_prepare_stop (EV_P_ ev_prepare *w)
		2022	{
		2023	ev_clear_pending (EV_A_ (W)w);
		2024	if (expect_false (!ev_is_active (w)))
		2025	return;
		2026
		2027	{
		2028	int active = ((W)w)->active;
		2029	prepares [active - 1] = prepares [--preparecnt];
		2030	((W)prepares [active - 1])->active = active;
		2031	}
		2032
		2033	ev_stop (EV_A_ (W)w);
		2034	}
		2035
		2036	void
		2037	ev_check_start (EV_P_ ev_check *w)
		2038	{
		2039	if (expect_false (ev_is_active (w)))
		2040	return;
		2041
		2042	ev_start (EV_A_ (W)w, ++checkcnt);
		2043	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2044	checks [checkcnt - 1] = w;
		2045	}
		2046
		2047	void
		2048	ev_check_stop (EV_P_ ev_check *w)
		2049	{
		2050	ev_clear_pending (EV_A_ (W)w);
		2051	if (expect_false (!ev_is_active (w)))
		2052	return;
		2053
		2054	{
		2055	int active = ((W)w)->active;
		2056	checks [active - 1] = checks [--checkcnt];
		2057	((W)checks [active - 1])->active = active;
		2058	}
		2059
		2060	ev_stop (EV_A_ (W)w);
		2061	}
		2062
		2063	#if EV_EMBED_ENABLE
		2064	void noinline
		2065	ev_embed_sweep (EV_P_ ev_embed *w)
		2066	{
		2067	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2068	}
		2069
		2070	static void
		2071	embed_cb (EV_P_ ev_io *io, int revents)
		2072	{
		2073	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2074
		2075	if (ev_cb (w))
		2076	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2077	else
		2078	ev_embed_sweep (loop, w);
		2079	}
		2080
		2081	void
		2082	ev_embed_start (EV_P_ ev_embed *w)
		2083	{
		2084	if (expect_false (ev_is_active (w)))
		2085	return;
		2086
		2087	{
		2088	struct ev_loop *loop = w->loop;
		2089	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2090	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2091	}
		2092
		2093	ev_set_priority (&w->io, ev_priority (w));
		2094	ev_io_start (EV_A_ &w->io);
		2095
		2096	ev_start (EV_A_ (W)w, 1);
		2097	}
		2098
		2099	void
		2100	ev_embed_stop (EV_P_ ev_embed *w)
		2101	{
		2102	ev_clear_pending (EV_A_ (W)w);
		2103	if (expect_false (!ev_is_active (w)))
		2104	return;
		2105
		2106	ev_io_stop (EV_A_ &w->io);
		2107
		2108	ev_stop (EV_A_ (W)w);
		2109	}
		2110	#endif
		2111
		2112	#if EV_FORK_ENABLE
		2113	void
		2114	ev_fork_start (EV_P_ ev_fork *w)
		2115	{
		2116	if (expect_false (ev_is_active (w)))
		2117	return;
		2118
		2119	ev_start (EV_A_ (W)w, ++forkcnt);
		2120	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2121	forks [forkcnt - 1] = w;
		2122	}
		2123
		2124	void
		2125	ev_fork_stop (EV_P_ ev_fork *w)
		2126	{
		2127	ev_clear_pending (EV_A_ (W)w);
		2128	if (expect_false (!ev_is_active (w)))
		2129	return;
		2130
		2131	{
		2132	int active = ((W)w)->active;
		2133	forks [active - 1] = forks [--forkcnt];
		2134	((W)forks [active - 1])->active = active;
		2135	}
		2136
		2137	ev_stop (EV_A_ (W)w);
		2138	}
		2139	#endif
		2140
1496	/*****************************************************************************/	2141	/*****************************************************************************/
1497		2142
1498	struct ev_once	2143	struct ev_once
1499	{	2144	{
1500	struct ev_io io;	2145	ev_io io;
1501	struct ev_timer to;	2146	ev_timer to;
1502	void (*cb)(int revents, void *arg);	2147	void (*cb)(int revents, void *arg);
1503	void *arg;	2148	void *arg;
1504	};	2149	};
1505		2150
1506	static void	2151	static void
…		…
1515		2160
1516	cb (revents, arg);	2161	cb (revents, arg);
1517	}	2162	}
1518		2163
1519	static void	2164	static void
1520	once_cb_io (EV_P_ struct ev_io *w, int revents)	2165	once_cb_io (EV_P_ ev_io *w, int revents)
1521	{	2166	{
1522	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2167	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1523	}	2168	}
1524		2169
1525	static void	2170	static void
1526	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2171	once_cb_to (EV_P_ ev_timer *w, int revents)
1527	{	2172	{
1528	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2173	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1529	}	2174	}
1530		2175
1531	void	2176	void
1532	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2177	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1533	{	2178	{
1534	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2179	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1535		2180
1536	if (!once)	2181	if (expect_false (!once))
		2182	{
1537	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2183	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1538	else	2184	return;
1539	{	2185	}
		2186
1540	once->cb = cb;	2187	once->cb = cb;
1541	once->arg = arg;	2188	once->arg = arg;
1542		2189
1543	ev_watcher_init (&once->io, once_cb_io);	2190	ev_init (&once->io, once_cb_io);
1544	if (fd >= 0)	2191	if (fd >= 0)
1545	{	2192	{
1546	ev_io_set (&once->io, fd, events);	2193	ev_io_set (&once->io, fd, events);
1547	ev_io_start (EV_A_ &once->io);	2194	ev_io_start (EV_A_ &once->io);
1548	}	2195	}
1549		2196
1550	ev_watcher_init (&once->to, once_cb_to);	2197	ev_init (&once->to, once_cb_to);
1551	if (timeout >= 0.)	2198	if (timeout >= 0.)
1552	{	2199	{
1553	ev_timer_set (&once->to, timeout, 0.);	2200	ev_timer_set (&once->to, timeout, 0.);
1554	ev_timer_start (EV_A_ &once->to);	2201	ev_timer_start (EV_A_ &once->to);
1555	}
1556	}	2202	}
1557	}	2203	}
1558		2204
		2205	#ifdef __cplusplus
		2206	}
		2207	#endif
		2208

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