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Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.158 by root, Thu Nov 29 17:28:13 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
71	#ifndef WIN32
72	# include <unistd.h>
73	# include <sys/time.h>
74	# include <sys/wait.h>
75	#endif
76	/**/
77
78	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1
80	#endif
81
82	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1
84	#endif
85
86	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88	#endif
89
90	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0
92	#endif
93
94	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0
96	#endif
97
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif
111
112	/**/
113
114	#ifndef CLOCK_MONOTONIC
115	# undef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0
117	#endif
118
119	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0
122	#endif
123
124	/**/
125
126	#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) */
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 */
130
131	#ifdef EV_H	123	#ifdef EV_H
132	# include EV_H	124	# include EV_H
133	#else	125	#else
134	# include "ev.h"	126	# include "ev.h"
135	#endif	127	#endif
136		128
		129	#ifndef _WIN32
		130	# include <sys/time.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
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		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
		219	/**/
		220
		221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
		224
137	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
138	# 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
139	# 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
140	#else	235	#else
141	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
142	# define inline static	238	# define inline_size static
		239	# define noinline
143	#endif	240	#endif
144		241
145	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
147		244
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
151	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
154		254
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		256
		257	#ifdef _WIN32
157	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
158		260
159	/*****************************************************************************/	261	/*****************************************************************************/
160		262
161	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
162		264
		265	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	267	{
165	syserr_cb = cb;	268	syserr_cb = cb;
166	}	269	}
167		270
168	static void	271	static void noinline
169	syserr (const char *msg)	272	syserr (const char *msg)
170	{	273	{
171	if (!msg)	274	if (!msg)
172	msg = "(libev) system error";	275	msg = "(libev) system error";
173		276
…		…
180	}	283	}
181	}	284	}
182		285
183	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
184		287
		288	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	290	{
187	alloc = cb;	291	alloc = cb;
188	}	292	}
189		293
190	static void *	294	inline_speed void *
191	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
192	{	296	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		298
195	if (!ptr && size)	299	if (!ptr && size)
…		…
209	typedef struct	313	typedef struct
210	{	314	{
211	WL head;	315	WL head;
212	unsigned char events;	316	unsigned char events;
213	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
214	} ANFD;	321	} ANFD;
215		322
216	typedef struct	323	typedef struct
217	{	324	{
218	W w;	325	W w;
219	int events;	326	int events;
220	} ANPENDING;	327	} ANPENDING;
221		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
222	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
223		337
224	struct ev_loop	338	struct ev_loop
225	{	339	{
226	ev_tstamp ev_rt_now;	340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
227	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
228	#include "ev_vars.h"	343	#include "ev_vars.h"
229	#undef VAR	344	#undef VAR
230	};	345	};
231	#include "ev_wrap.h"	346	#include "ev_wrap.h"
232		347
233	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
234	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
235		350
236	#else	351	#else
237		352
238	ev_tstamp ev_rt_now;	353	ev_tstamp ev_rt_now;
239	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
240	#include "ev_vars.h"	355	#include "ev_vars.h"
241	#undef VAR	356	#undef VAR
242		357
243	static int default_loop;	358	static int ev_default_loop_ptr;
244		359
245	#endif	360	#endif
246		361
247	/*****************************************************************************/	362	/*****************************************************************************/
248		363
249	inline ev_tstamp	364	ev_tstamp
250	ev_time (void)	365	ev_time (void)
251	{	366	{
252	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
253	struct timespec ts;	368	struct timespec ts;
254	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
258	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
259	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
260	#endif	375	#endif
261	}	376	}
262		377
263	inline ev_tstamp	378	ev_tstamp inline_size
264	get_clock (void)	379	get_clock (void)
265	{	380	{
266	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
267	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
268	{	383	{
…		…
281	{	396	{
282	return ev_rt_now;	397	return ev_rt_now;
283	}	398	}
284	#endif	399	#endif
285		400
286	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
287		402
288	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
289	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
290	{ \	405	{ \
291	int newcnt = cur; \	406	int newcnt = cur; \
…		…
306	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
307	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
309	}	424	}
310		425
311	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
312	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
313	#define array_free_microshit(stem) \
314	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
315
316	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
317	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;
318		428
319	/*****************************************************************************/	429	/*****************************************************************************/
320		430
321	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
322	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
323	{	461	{
324	while (count--)	462	while (count--)
325	{	463	{
326	base->head = 0;	464	base->head = 0;
…		…
329		467
330	++base;	468	++base;
331	}	469	}
332	}	470	}
333		471
334	void	472	void inline_speed
335	ev_feed_event (EV_P_ void *w, int revents)
336	{
337	W w_ = (W)w;
338
339	if (w_->pending)
340	{
341	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
342	return;
343	}
344
345	w_->pending = ++pendingcnt [ABSPRI (w_)];
346	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349	}
350
351	static void
352	queue_events (EV_P_ W *events, int eventcnt, int type)
353	{
354	int i;
355
356	for (i = 0; i < eventcnt; ++i)
357	ev_feed_event (EV_A_ events [i], type);
358	}
359
360	inline void
361	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
362	{	474	{
363	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	476	ev_io *w;
365		477
366	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)
367	{	479	{
368	int ev = w->events & revents;	480	int ev = w->events & revents;
369		481
370	if (ev)	482	if (ev)
371	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
376	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
377	{	489	{
378	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
379	}	491	}
380		492
381	/*****************************************************************************/	493	void inline_size
382
383	static void
384	fd_reify (EV_P)	494	fd_reify (EV_P)
385	{	495	{
386	int i;	496	int i;
387		497
388	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
389	{	499	{
390	int fd = fdchanges [i];	500	int fd = fdchanges [i];
391	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
392	struct ev_io *w;	502	ev_io *w;
393		503
394	int events = 0;	504	int events = 0;
395		505
396	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)
397	events |= w->events;	507	events |= w->events;
398		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
399	anfd->reify = 0;	518	anfd->reify = 0;
400		519
401	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
402	anfd->events = events;	521	anfd->events = events;
403	}	522	}
404		523
405	fdchangecnt = 0;	524	fdchangecnt = 0;
406	}	525	}
407		526
408	static void	527	void inline_size
409	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
410	{	529	{
411	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
412	return;	531	return;
413		532
414	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
415		534
416	++fdchangecnt;	535	++fdchangecnt;
417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
419	}	538	}
420		539
421	static void	540	void inline_speed
422	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
423	{	542	{
424	struct ev_io *w;	543	ev_io *w;
425		544
426	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
427	{	546	{
428	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
429	ev_feed_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);
430	}	549	}
431	}	550	}
432		551
433	static int	552	int inline_size
434	fd_valid (int fd)	553	fd_valid (int fd)
435	{	554	{
436	#ifdef WIN32	555	#ifdef _WIN32
437	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
438	#else	557	#else
439	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
440	#endif	559	#endif
441	}	560	}
442		561
443	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
444	static void	563	static void noinline
445	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
446	{	565	{
447	int fd;	566	int fd;
448		567
449	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
451	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
452	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
453	}	572	}
454		573
455	/* 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 */
456	static void	575	static void noinline
457	fd_enomem (EV_P)	576	fd_enomem (EV_P)
458	{	577	{
459	int fd;	578	int fd;
460		579
461	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
464	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
465	return;	584	return;
466	}	585	}
467	}	586	}
468		587
469	/* 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 */
470	static void	589	static void noinline
471	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
472	{	591	{
473	int fd;	592	int fd;
474		593
475	/* this should be highly optimised to not do anything but set a flag */
476	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
477	if (anfds [fd].events)	595	if (anfds [fd].events)
478	{	596	{
479	anfds [fd].events = 0;	597	anfds [fd].events = 0;
480	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
481	}	599	}
482	}	600	}
483		601
484	/*****************************************************************************/	602	/*****************************************************************************/
485		603
486	static void	604	void inline_speed
487	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
488	{	606	{
489	WT w = heap [k];	607	WT w = heap [k];
490		608
491	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
498	heap [k] = w;	616	heap [k] = w;
499	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
500		618
501	}	619	}
502		620
503	static void	621	void inline_speed
504	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
505	{	623	{
506	WT w = heap [k];	624	WT w = heap [k];
507		625
508	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
522		640
523	heap [k] = w;	641	heap [k] = w;
524	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
525	}	643	}
526		644
527	inline void	645	void inline_size
528	adjustheap (WT *heap, int N, int k, ev_tstamp at)	646	adjustheap (WT *heap, int N, int k)
529	{	647	{
530	ev_tstamp old_at = heap [k]->at;	648	upheap (heap, k);
531	heap [k]->at = at;
532
533	if (old_at < at)
534	downheap (heap, N, k);	649	downheap (heap, N, k);
535	else
536	upheap (heap, k);
537	}	650	}
538		651
539	/*****************************************************************************/	652	/*****************************************************************************/
540		653
541	typedef struct	654	typedef struct
…		…
547	static ANSIG *signals;	660	static ANSIG *signals;
548	static int signalmax;	661	static int signalmax;
549		662
550	static int sigpipe [2];	663	static int sigpipe [2];
551	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
552	static struct ev_io sigev;	665	static ev_io sigev;
553		666
554	static void	667	void inline_size
555	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
556	{	669	{
557	while (count--)	670	while (count--)
558	{	671	{
559	base->head = 0;	672	base->head = 0;
…		…
564	}	677	}
565		678
566	static void	679	static void
567	sighandler (int signum)	680	sighandler (int signum)
568	{	681	{
569	#if WIN32	682	#if _WIN32
570	signal (signum, sighandler);	683	signal (signum, sighandler);
571	#endif	684	#endif
572		685
573	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
574		687
575	if (!gotsig)	688	if (!gotsig)
576	{	689	{
577	int old_errno = errno;	690	int old_errno = errno;
578	gotsig = 1;	691	gotsig = 1;
579	#ifdef WIN32
580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581	#else
582	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
583	#endif
584	errno = old_errno;	693	errno = old_errno;
585	}	694	}
586	}	695	}
587		696
588	void	697	void noinline
589	ev_feed_signal_event (EV_P_ int signum)	698	ev_feed_signal_event (EV_P_ int signum)
590	{	699	{
591	WL w;	700	WL w;
592		701
593	#if EV_MULTIPLICITY	702	#if EV_MULTIPLICITY
594	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
595	#endif	704	#endif
596		705
597	--signum;	706	--signum;
598		707
599	if (signum < 0 || signum >= signalmax)	708	if (signum < 0 || signum >= signalmax)
…		…
604	for (w = signals [signum].head; w; w = w->next)	713	for (w = signals [signum].head; w; w = w->next)
605	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
606	}	715	}
607		716
608	static void	717	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
610	{	719	{
611	int signum;	720	int signum;
612		721
613	#ifdef WIN32
614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615	#else
616	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
617	#endif
618	gotsig = 0;	723	gotsig = 0;
619		724
620	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
621	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
622	ev_feed_signal_event (EV_A_ signum + 1);	727	ev_feed_signal_event (EV_A_ signum + 1);
623	}	728	}
624		729
625	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
626	siginit (EV_P)	743	siginit (EV_P)
627	{	744	{
628	#ifndef WIN32	745	fd_intern (sigpipe [0]);
629	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
630	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
631
632	/* rather than sort out wether we really need nb, set it */
633	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
634	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
635	#endif
636		747
637	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
638	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
639	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
640	}	751	}
641		752
642	/*****************************************************************************/	753	/*****************************************************************************/
643		754
644	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
645		756
646	#ifndef WIN32	757	#ifndef _WIN32
647		758
648	static struct ev_signal childev;	759	static ev_signal childev;
649		760
650	#ifndef WCONTINUED	761	void inline_speed
651	# define WCONTINUED 0
652	#endif
653
654	static void
655	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)
656	{	763	{
657	struct ev_child *w;	764	ev_child *w;
658		765
659	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)
660	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
661	{	768	{
662	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
663	w->rpid = pid;	770	w->rpid = pid;
664	w->rstatus = status;	771	w->rstatus = status;
665	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
666	}	773	}
667	}	774	}
668		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
669	static void	780	static void
670	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
671	{	782	{
672	int pid, status;	783	int pid, status;
673		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
674	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
675	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
676	/* 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 */
677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678		795
679	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
680	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 */
681	}
682	}	799	}
683		800
684	#endif	801	#endif
685		802
686	/*****************************************************************************/	803	/*****************************************************************************/
687		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
688	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
689	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
690	#endif	810	#endif
691	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
692	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
709	{	829	{
710	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
711	}	831	}
712		832
713	/* 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 */
714	static int	834	int inline_size
715	enable_secure (void)	835	enable_secure (void)
716	{	836	{
717	#ifdef WIN32	837	#ifdef _WIN32
718	return 0;	838	return 0;
719	#else	839	#else
720	return getuid () != geteuid ()	840	return getuid () != geteuid ()
721	|| getgid () != getegid ();	841	|| getgid () != getegid ();
722	#endif	842	#endif
723	}	843	}
724		844
725	int	845	unsigned int
726	ev_method (EV_P)	846	ev_supported_backends (void)
727	{	847	{
728	return method;	848	unsigned int flags = 0;
729	}
730		849
731	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
732	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)
733	{	861	{
734	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)
735	{	895	{
736	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
737	{	897	{
738	struct timespec ts;	898	struct timespec ts;
739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
744	ev_rt_now = ev_time ();	904	ev_rt_now = ev_time ();
745	mn_now = get_clock ();	905	mn_now = get_clock ();
746	now_floor = mn_now;	906	now_floor = mn_now;
747	rtmn_diff = ev_rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
748		908
749	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
750	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"))
751	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
752	else
753	methods = EVMETHOD_ANY;
754		919
755	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
756	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
757	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);
758	#endif	931	#endif
759	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761	#endif	934	#endif
762	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764	#endif	937	#endif
765	#if EV_USE_POLL	938	#if EV_USE_POLL
766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767	#endif	940	#endif
768	#if EV_USE_SELECT	941	#if EV_USE_SELECT
769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770	#endif	943	#endif
771		944
772	ev_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
773	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
774	}	947	}
775	}	948	}
776		949
777	void	950	static void noinline
778	loop_destroy (EV_P)	951	loop_destroy (EV_P)
779	{	952	{
780	int i;	953	int i;
781		954
782	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
783	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);
784	#endif	965	#endif
785	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787	#endif	968	#endif
788	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790	#endif	971	#endif
791	#if EV_USE_POLL	972	#if EV_USE_POLL
792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793	#endif	974	#endif
794	#if EV_USE_SELECT	975	#if EV_USE_SELECT
795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796	#endif	977	#endif
797		978
798	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
799	array_free (pending, [i]);	980	array_free (pending, [i]);
800		981
801	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
802	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
803	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
804	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
805	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
806	array_free_microshit (prepare);	987	#endif
807	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
808		991
809	method = 0;	992	backend = 0;
810	}	993	}
811		994
812	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
813	loop_fork (EV_P)	998	loop_fork (EV_P)
814	{	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
815	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
817	#endif	1008	#endif
818	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
819	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
820	#endif	1011	#endif
821		1012
822	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
823	{	1014	{
824	/* default loop */	1015	/* default loop */
…		…
837	postfork = 0;	1028	postfork = 0;
838	}	1029	}
839		1030
840	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
841	struct ev_loop *	1032	struct ev_loop *
842	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
843	{	1034	{
844	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));
845		1036
846	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
847		1038
848	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
849		1040
850	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
851	return loop;	1042	return loop;
852		1043
853	return 0;	1044	return 0;
854	}	1045	}
855		1046
…		…
868		1059
869	#endif	1060	#endif
870		1061
871	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
872	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
873	#else	1065	#else
874	int	1066	int
		1067	ev_default_loop (unsigned int flags)
875	#endif	1068	#endif
876	ev_default_loop (int methods)
877	{	1069	{
878	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
879	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
880	return 0;	1072	return 0;
881		1073
882	if (!default_loop)	1074	if (!ev_default_loop_ptr)
883	{	1075	{
884	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886	#else	1078	#else
887	default_loop = 1;	1079	ev_default_loop_ptr = 1;
888	#endif	1080	#endif
889		1081
890	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
891		1083
892	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
893	{	1085	{
894	siginit (EV_A);	1086	siginit (EV_A);
895		1087
896	#ifndef WIN32	1088	#ifndef _WIN32
897	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
898	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
899	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
900	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
901	#endif	1093	#endif
902	}	1094	}
903	else	1095	else
904	default_loop = 0;	1096	ev_default_loop_ptr = 0;
905	}	1097	}
906		1098
907	return default_loop;	1099	return ev_default_loop_ptr;
908	}	1100	}
909		1101
910	void	1102	void
911	ev_default_destroy (void)	1103	ev_default_destroy (void)
912	{	1104	{
913	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1107	#endif
916		1108
917	#ifndef WIN32	1109	#ifndef _WIN32
918	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
919	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
920	#endif	1112	#endif
921		1113
922	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
930		1122
931	void	1123	void
932	ev_default_fork (void)	1124	ev_default_fork (void)
933	{	1125	{
934	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
935	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
936	#endif	1128	#endif
937		1129
938	if (method)	1130	if (backend)
939	postfork = 1;	1131	postfork = 1;
940	}	1132	}
941		1133
942	/*****************************************************************************/	1134	/*****************************************************************************/
943		1135
944	static int	1136	int inline_size
945	any_pending (EV_P)	1137	any_pending (EV_P)
946	{	1138	{
947	int pri;	1139	int pri;
948		1140
949	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
951	return 1;	1143	return 1;
952		1144
953	return 0;	1145	return 0;
954	}	1146	}
955		1147
956	static void	1148	void inline_speed
957	call_pending (EV_P)	1149	call_pending (EV_P)
958	{	1150	{
959	int pri;	1151	int pri;
960		1152
961	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
962	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
963	{	1155	{
964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965		1157
966	if (p->w)	1158	if (expect_true (p->w))
967	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
968	p->w->pending = 0;	1162	p->w->pending = 0;
969	EV_CB_INVOKE (p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
970	}	1164	}
971	}	1165	}
972	}	1166	}
973		1167
974	static void	1168	void inline_size
975	timers_reify (EV_P)	1169	timers_reify (EV_P)
976	{	1170	{
977	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
978	{	1172	{
979	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
980		1174
981	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
982		1176
983	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
984	if (w->repeat)	1178	if (w->repeat)
985	{	1179	{
986	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
987	((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
988	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
989	}	1187	}
990	else	1188	else
991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992		1190
993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994	}	1192	}
995	}	1193	}
996		1194
997	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
998	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
999	{	1198	{
1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001	{	1200	{
1002	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
1003		1202
1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1005		1204
1006	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
1007	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
1008	{	1207	{
1009	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1010
1011	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1012	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
1013	}	1211	}
1014	else if (w->interval)	1212	else if (w->interval)
1015	{	1213	{
…		…
1022		1220
1023	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1024	}	1222	}
1025	}	1223	}
1026		1224
1027	static void	1225	static void noinline
1028	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
1029	{	1227	{
1030	int i;	1228	int i;
1031		1229
1032	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
1033	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
1034	{	1232	{
1035	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
1036		1234
1037	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1039	else if (w->interval)	1237	else if (w->interval)
1040	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1042		1240
1043	/* now rebuild the heap */	1241	/* now rebuild the heap */
1044	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1045	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1046	}	1244	}
		1245	#endif
1047		1246
1048	inline int	1247	int inline_size
1049	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1050	{	1249	{
1051	mn_now = get_clock ();	1250	mn_now = get_clock ();
1052		1251
1053	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1061	ev_rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1062	return 1;	1261	return 1;
1063	}	1262	}
1064	}	1263	}
1065		1264
1066	static void	1265	void inline_size
1067	time_update (EV_P)	1266	time_update (EV_P)
1068	{	1267	{
1069	int i;	1268	int i;
1070		1269
1071	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1073	{	1272	{
1074	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1075	{	1274	{
1076	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1077		1276
1078	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; )
1079	{	1286	{
1080	rtmn_diff = ev_rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1081		1288
1082	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1083	return; /* all is well */	1290	return; /* all is well */
…		…
1085	ev_rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();	1293	mn_now = get_clock ();
1087	now_floor = mn_now;	1294	now_floor = mn_now;
1088	}	1295	}
1089		1296
		1297	# if EV_PERIODIC_ENABLE
1090	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1091	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1092	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093	}	1302	}
1094	}	1303	}
1095	else	1304	else
…		…
1097	{	1306	{
1098	ev_rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1099		1308
1100	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1101	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1102	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1103		1314
1104	/* 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 */
1105	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1106	((WT)timers [i])->at += ev_rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1107	}	1318	}
1108		1319
1109	mn_now = ev_rt_now;	1320	mn_now = ev_rt_now;
…		…
1125	static int loop_done;	1336	static int loop_done;
1126		1337
1127	void	1338	void
1128	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1129	{	1340	{
1130	double block;
1131	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1132		1344
1133	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (activecnt)
1134	{	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
1135	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1136	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1137	{	1370	{
1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1139	call_pending (EV_A);	1372	call_pending (EV_A);
…		…
1145		1378
1146	/* update fd-related kernel structures */	1379	/* update fd-related kernel structures */
1147	fd_reify (EV_A);	1380	fd_reify (EV_A);
1148		1381
1149	/* calculate blocking time */	1382	/* calculate blocking time */
		1383	{
		1384	ev_tstamp block;
1150		1385
1151	/* we only need this for !monotonic clock or timers, but as we basically	1386	if (flags & EVLOOP_NONBLOCK || idlecnt)
1152	always have timers, we just calculate it always */	1387	block = 0.; /* do not block at all */
		1388	else
		1389	{
		1390	/* update time to cancel out callback processing overhead */
1153	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
1154	if (expect_true (have_monotonic))	1392	if (expect_true (have_monotonic))
1155	time_update_monotonic (EV_A);	1393	time_update_monotonic (EV_A);
1156	else	1394	else
1157	#endif	1395	#endif
1158	{	1396	{
1159	ev_rt_now = ev_time ();	1397	ev_rt_now = ev_time ();
1160	mn_now = ev_rt_now;	1398	mn_now = ev_rt_now;
1161	}	1399	}
1162		1400
1163	if (flags & EVLOOP_NONBLOCK || idlecnt)
1164	block = 0.;
1165	else
1166	{
1167	block = MAX_BLOCKTIME;	1401	block = MAX_BLOCKTIME;
1168		1402
1169	if (timercnt)	1403	if (timercnt)
1170	{	1404	{
1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172	if (block > to) block = to;	1406	if (block > to) block = to;
1173	}	1407	}
1174		1408
		1409	#if EV_PERIODIC_ENABLE
1175	if (periodiccnt)	1410	if (periodiccnt)
1176	{	1411	{
1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178	if (block > to) block = to;	1413	if (block > to) block = to;
1179	}	1414	}
		1415	#endif
1180		1416
1181	if (block < 0.) block = 0.;	1417	if (expect_false (block < 0.)) block = 0.;
1182	}	1418	}
1183		1419
1184	method_poll (EV_A_ block);	1420	backend_poll (EV_A_ block);
		1421	}
1185		1422
1186	/* update ev_rt_now, do magic */	1423	/* update ev_rt_now, do magic */
1187	time_update (EV_A);	1424	time_update (EV_A);
1188		1425
1189	/* queue pending timers and reschedule them */	1426	/* queue pending timers and reschedule them */
1190	timers_reify (EV_A); /* relative timers called last */	1427	timers_reify (EV_A); /* relative timers called last */
		1428	#if EV_PERIODIC_ENABLE
1191	periodics_reify (EV_A); /* absolute timers called first */	1429	periodics_reify (EV_A); /* absolute timers called first */
		1430	#endif
1192		1431
1193	/* queue idle watchers unless io or timers are pending */	1432	/* queue idle watchers unless other events are pending */
1194	if (idlecnt && !any_pending (EV_A))	1433	if (idlecnt && !any_pending (EV_A))
1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1196		1435
1197	/* queue check watchers, to be executed first */	1436	/* queue check watchers, to be executed first */
1198	if (checkcnt)	1437	if (expect_false (checkcnt))
1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200		1439
1201	call_pending (EV_A);	1440	call_pending (EV_A);
1202	}
1203	while (activecnt && !loop_done);
1204		1441
1205	if (loop_done != 2)	1442	if (expect_false (loop_done))
1206	loop_done = 0;	1443	break;
		1444	}
		1445
		1446	if (loop_done == EVUNLOOP_ONE)
		1447	loop_done = EVUNLOOP_CANCEL;
1207	}	1448	}
1208		1449
1209	void	1450	void
1210	ev_unloop (EV_P_ int how)	1451	ev_unloop (EV_P_ int how)
1211	{	1452	{
1212	loop_done = how;	1453	loop_done = how;
1213	}	1454	}
1214		1455
1215	/*****************************************************************************/	1456	/*****************************************************************************/
1216		1457
1217	inline void	1458	void inline_size
1218	wlist_add (WL *head, WL elem)	1459	wlist_add (WL *head, WL elem)
1219	{	1460	{
1220	elem->next = *head;	1461	elem->next = *head;
1221	*head = elem;	1462	*head = elem;
1222	}	1463	}
1223		1464
1224	inline void	1465	void inline_size
1225	wlist_del (WL *head, WL elem)	1466	wlist_del (WL *head, WL elem)
1226	{	1467	{
1227	while (*head)	1468	while (*head)
1228	{	1469	{
1229	if (*head == elem)	1470	if (*head == elem)
…		…
1234		1475
1235	head = &(*head)->next;	1476	head = &(*head)->next;
1236	}	1477	}
1237	}	1478	}
1238		1479
1239	inline void	1480	void inline_speed
1240	ev_clear_pending (EV_P_ W w)	1481	ev_clear_pending (EV_P_ W w)
1241	{	1482	{
1242	if (w->pending)	1483	if (w->pending)
1243	{	1484	{
1244	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1245	w->pending = 0;	1486	w->pending = 0;
1246	}	1487	}
1247	}	1488	}
1248		1489
1249	inline void	1490	void inline_speed
1250	ev_start (EV_P_ W w, int active)	1491	ev_start (EV_P_ W w, int active)
1251	{	1492	{
1252	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1253	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1254		1495
1255	w->active = active;	1496	w->active = active;
1256	ev_ref (EV_A);	1497	ev_ref (EV_A);
1257	}	1498	}
1258		1499
1259	inline void	1500	void inline_size
1260	ev_stop (EV_P_ W w)	1501	ev_stop (EV_P_ W w)
1261	{	1502	{
1262	ev_unref (EV_A);	1503	ev_unref (EV_A);
1263	w->active = 0;	1504	w->active = 0;
1264	}	1505	}
1265		1506
1266	/*****************************************************************************/	1507	/*****************************************************************************/
1267		1508
1268	void	1509	void
1269	ev_io_start (EV_P_ struct ev_io *w)	1510	ev_io_start (EV_P_ ev_io *w)
1270	{	1511	{
1271	int fd = w->fd;	1512	int fd = w->fd;
1272		1513
1273	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1274	return;	1515	return;
1275		1516
1276	assert (("ev_io_start called with negative fd", fd >= 0));	1517	assert (("ev_io_start called with negative fd", fd >= 0));
1277		1518
1278	ev_start (EV_A_ (W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
…		…
1281		1522
1282	fd_change (EV_A_ fd);	1523	fd_change (EV_A_ fd);
1283	}	1524	}
1284		1525
1285	void	1526	void
1286	ev_io_stop (EV_P_ struct ev_io *w)	1527	ev_io_stop (EV_P_ ev_io *w)
1287	{	1528	{
1288	ev_clear_pending (EV_A_ (W)w);	1529	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1530	if (expect_false (!ev_is_active (w)))
1290	return;	1531	return;
		1532
		1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1291		1534
1292	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1294		1537
1295	fd_change (EV_A_ w->fd);	1538	fd_change (EV_A_ w->fd);
1296	}	1539	}
1297		1540
1298	void	1541	void
1299	ev_timer_start (EV_P_ struct ev_timer *w)	1542	ev_timer_start (EV_P_ ev_timer *w)
1300	{	1543	{
1301	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1302	return;	1545	return;
1303		1546
1304	((WT)w)->at += mn_now;	1547	((WT)w)->at += mn_now;
1305		1548
1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1549	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307		1550
1308	ev_start (EV_A_ (W)w, ++timercnt);	1551	ev_start (EV_A_ (W)w, ++timercnt);
1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1310	timers [timercnt - 1] = w;	1553	timers [timercnt - 1] = w;
1311	upheap ((WT *)timers, timercnt - 1);	1554	upheap ((WT *)timers, timercnt - 1);
1312		1555
		1556	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1557	}
		1558
		1559	void
		1560	ev_timer_stop (EV_P_ ev_timer *w)
		1561	{
		1562	ev_clear_pending (EV_A_ (W)w);
		1563	if (expect_false (!ev_is_active (w)))
		1564	return;
		1565
1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314	}
1315		1567
1316	void	1568	{
1317	ev_timer_stop (EV_P_ struct ev_timer *w)	1569	int active = ((W)w)->active;
1318	{
1319	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))
1321	return;
1322		1570
1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1571	if (expect_true (--active < --timercnt))
1324
1325	if (((W)w)->active < timercnt--)
1326	{	1572	{
1327	timers [((W)w)->active - 1] = timers [timercnt];	1573	timers [active] = timers [timercnt];
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, active);
1329	}	1575	}
		1576	}
1330		1577
1331	((WT)w)->at = w->repeat;	1578	((WT)w)->at -= mn_now;
1332		1579
1333	ev_stop (EV_A_ (W)w);	1580	ev_stop (EV_A_ (W)w);
1334	}	1581	}
1335		1582
1336	void	1583	void
1337	ev_timer_again (EV_P_ struct ev_timer *w)	1584	ev_timer_again (EV_P_ ev_timer *w)
1338	{	1585	{
1339	if (ev_is_active (w))	1586	if (ev_is_active (w))
1340	{	1587	{
1341	if (w->repeat)	1588	if (w->repeat)
		1589	{
		1590	((WT)w)->at = mn_now + w->repeat;
1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1592	}
1343	else	1593	else
1344	ev_timer_stop (EV_A_ w);	1594	ev_timer_stop (EV_A_ w);
1345	}	1595	}
1346	else if (w->repeat)	1596	else if (w->repeat)
		1597	{
		1598	w->at = w->repeat;
1347	ev_timer_start (EV_A_ w);	1599	ev_timer_start (EV_A_ w);
		1600	}
1348	}	1601	}
1349		1602
		1603	#if EV_PERIODIC_ENABLE
1350	void	1604	void
1351	ev_periodic_start (EV_P_ struct ev_periodic *w)	1605	ev_periodic_start (EV_P_ ev_periodic *w)
1352	{	1606	{
1353	if (ev_is_active (w))	1607	if (expect_false (ev_is_active (w)))
1354	return;	1608	return;
1355		1609
1356	if (w->reschedule_cb)	1610	if (w->reschedule_cb)
1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358	else if (w->interval)	1612	else if (w->interval)
…		…
1361	/* this formula differs from the one in periodic_reify because we do not always round up */	1615	/* this formula differs from the one in periodic_reify because we do not always round up */
1362	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1363	}	1617	}
1364		1618
1365	ev_start (EV_A_ (W)w, ++periodiccnt);	1619	ev_start (EV_A_ (W)w, ++periodiccnt);
1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1367	periodics [periodiccnt - 1] = w;	1621	periodics [periodiccnt - 1] = w;
1368	upheap ((WT *)periodics, periodiccnt - 1);	1622	upheap ((WT *)periodics, periodiccnt - 1);
1369		1623
		1624	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1625	}
		1626
		1627	void
		1628	ev_periodic_stop (EV_P_ ev_periodic *w)
		1629	{
		1630	ev_clear_pending (EV_A_ (W)w);
		1631	if (expect_false (!ev_is_active (w)))
		1632	return;
		1633
1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1371	}
1372		1635
1373	void	1636	{
1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1637	int active = ((W)w)->active;
1375	{
1376	ev_clear_pending (EV_A_ (W)w);
1377	if (!ev_is_active (w))
1378	return;
1379		1638
1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1639	if (expect_true (--active < --periodiccnt))
1381
1382	if (((W)w)->active < periodiccnt--)
1383	{	1640	{
1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1641	periodics [active] = periodics [periodiccnt];
1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1642	adjustheap ((WT *)periodics, periodiccnt, active);
1386	}	1643	}
		1644	}
1387		1645
1388	ev_stop (EV_A_ (W)w);	1646	ev_stop (EV_A_ (W)w);
1389	}	1647	}
1390		1648
1391	void	1649	void
1392	ev_periodic_again (EV_P_ struct ev_periodic *w)	1650	ev_periodic_again (EV_P_ ev_periodic *w)
1393	{	1651	{
1394	/* TODO: use adjustheap and recalculation */	1652	/* TODO: use adjustheap and recalculation */
1395	ev_periodic_stop (EV_A_ w);	1653	ev_periodic_stop (EV_A_ w);
1396	ev_periodic_start (EV_A_ w);	1654	ev_periodic_start (EV_A_ w);
1397	}	1655	}
1398		1656	#endif
1399	void
1400	ev_idle_start (EV_P_ struct ev_idle *w)
1401	{
1402	if (ev_is_active (w))
1403	return;
1404
1405	ev_start (EV_A_ (W)w, ++idlecnt);
1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1407	idles [idlecnt - 1] = w;
1408	}
1409
1410	void
1411	ev_idle_stop (EV_P_ struct ev_idle *w)
1412	{
1413	ev_clear_pending (EV_A_ (W)w);
1414	if (ev_is_active (w))
1415	return;
1416
1417	idles [((W)w)->active - 1] = idles [--idlecnt];
1418	ev_stop (EV_A_ (W)w);
1419	}
1420
1421	void
1422	ev_prepare_start (EV_P_ struct ev_prepare *w)
1423	{
1424	if (ev_is_active (w))
1425	return;
1426
1427	ev_start (EV_A_ (W)w, ++preparecnt);
1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1429	prepares [preparecnt - 1] = w;
1430	}
1431
1432	void
1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434	{
1435	ev_clear_pending (EV_A_ (W)w);
1436	if (ev_is_active (w))
1437	return;
1438
1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440	ev_stop (EV_A_ (W)w);
1441	}
1442
1443	void
1444	ev_check_start (EV_P_ struct ev_check *w)
1445	{
1446	if (ev_is_active (w))
1447	return;
1448
1449	ev_start (EV_A_ (W)w, ++checkcnt);
1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1451	checks [checkcnt - 1] = w;
1452	}
1453
1454	void
1455	ev_check_stop (EV_P_ struct ev_check *w)
1456	{
1457	ev_clear_pending (EV_A_ (W)w);
1458	if (ev_is_active (w))
1459	return;
1460
1461	checks [((W)w)->active - 1] = checks [--checkcnt];
1462	ev_stop (EV_A_ (W)w);
1463	}
1464		1657
1465	#ifndef SA_RESTART	1658	#ifndef SA_RESTART
1466	# define SA_RESTART 0	1659	# define SA_RESTART 0
1467	#endif	1660	#endif
1468		1661
1469	void	1662	void
1470	ev_signal_start (EV_P_ struct ev_signal *w)	1663	ev_signal_start (EV_P_ ev_signal *w)
1471	{	1664	{
1472	#if EV_MULTIPLICITY	1665	#if EV_MULTIPLICITY
1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1666	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474	#endif	1667	#endif
1475	if (ev_is_active (w))	1668	if (expect_false (ev_is_active (w)))
1476	return;	1669	return;
1477		1670
1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1671	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479		1672
1480	ev_start (EV_A_ (W)w, 1);	1673	ev_start (EV_A_ (W)w, 1);
1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1483		1676
1484	if (!((WL)w)->next)	1677	if (!((WL)w)->next)
1485	{	1678	{
1486	#if WIN32	1679	#if _WIN32
1487	signal (w->signum, sighandler);	1680	signal (w->signum, sighandler);
1488	#else	1681	#else
1489	struct sigaction sa;	1682	struct sigaction sa;
1490	sa.sa_handler = sighandler;	1683	sa.sa_handler = sighandler;
1491	sigfillset (&sa.sa_mask);	1684	sigfillset (&sa.sa_mask);
…		…
1494	#endif	1687	#endif
1495	}	1688	}
1496	}	1689	}
1497		1690
1498	void	1691	void
1499	ev_signal_stop (EV_P_ struct ev_signal *w)	1692	ev_signal_stop (EV_P_ ev_signal *w)
1500	{	1693	{
1501	ev_clear_pending (EV_A_ (W)w);	1694	ev_clear_pending (EV_A_ (W)w);
1502	if (!ev_is_active (w))	1695	if (expect_false (!ev_is_active (w)))
1503	return;	1696	return;
1504		1697
1505	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1506	ev_stop (EV_A_ (W)w);	1699	ev_stop (EV_A_ (W)w);
1507		1700
1508	if (!signals [w->signum - 1].head)	1701	if (!signals [w->signum - 1].head)
1509	signal (w->signum, SIG_DFL);	1702	signal (w->signum, SIG_DFL);
1510	}	1703	}
1511		1704
1512	void	1705	void
1513	ev_child_start (EV_P_ struct ev_child *w)	1706	ev_child_start (EV_P_ ev_child *w)
1514	{	1707	{
1515	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1516	assert (("child watchers are only supported in the default loop", loop == default_loop));	1709	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1710	#endif
1518	if (ev_is_active (w))	1711	if (expect_false (ev_is_active (w)))
1519	return;	1712	return;
1520		1713
1521	ev_start (EV_A_ (W)w, 1);	1714	ev_start (EV_A_ (W)w, 1);
1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1523	}	1716	}
1524		1717
1525	void	1718	void
1526	ev_child_stop (EV_P_ struct ev_child *w)	1719	ev_child_stop (EV_P_ ev_child *w)
1527	{	1720	{
1528	ev_clear_pending (EV_A_ (W)w);	1721	ev_clear_pending (EV_A_ (W)w);
1529	if (ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1530	return;	1723	return;
1531		1724
1532	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1533	ev_stop (EV_A_ (W)w);	1726	ev_stop (EV_A_ (W)w);
1534	}	1727	}
1535		1728
		1729	#if EV_STAT_ENABLE
		1730
		1731	# ifdef _WIN32
		1732	# undef lstat
		1733	# define lstat(a,b) _stati64 (a,b)
		1734	# endif
		1735
		1736	#define DEF_STAT_INTERVAL 5.0074891
		1737	#define MIN_STAT_INTERVAL 0.1074891
		1738
		1739	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1740
		1741	#if EV_USE_INOTIFY
		1742	# define EV_INOTIFY_BUFSIZE 8192
		1743
		1744	static void noinline
		1745	infy_add (EV_P_ ev_stat *w)
		1746	{
		1747	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);
		1748
		1749	if (w->wd < 0)
		1750	{
		1751	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1752
		1753	/* monitor some parent directory for speedup hints */
		1754	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1755	{
		1756	char path [4096];
		1757	strcpy (path, w->path);
		1758
		1759	do
		1760	{
		1761	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1762	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1763
		1764	char *pend = strrchr (path, '/');
		1765
		1766	if (!pend)
		1767	break; /* whoops, no '/', complain to your admin */
		1768
		1769	*pend = 0;
		1770	w->wd = inotify_add_watch (fs_fd, path, mask);
		1771	}
		1772	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1773	}
		1774	}
		1775	else
		1776	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1777
		1778	if (w->wd >= 0)
		1779	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1780	}
		1781
		1782	static void noinline
		1783	infy_del (EV_P_ ev_stat *w)
		1784	{
		1785	int slot;
		1786	int wd = w->wd;
		1787
		1788	if (wd < 0)
		1789	return;
		1790
		1791	w->wd = -2;
		1792	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1793	wlist_del (&fs_hash [slot].head, (WL)w);
		1794
		1795	/* remove this watcher, if others are watching it, they will rearm */
		1796	inotify_rm_watch (fs_fd, wd);
		1797	}
		1798
		1799	static void noinline
		1800	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1801	{
		1802	if (slot < 0)
		1803	/* overflow, need to check for all hahs slots */
		1804	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1805	infy_wd (EV_A_ slot, wd, ev);
		1806	else
		1807	{
		1808	WL w_;
		1809
		1810	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1811	{
		1812	ev_stat *w = (ev_stat *)w_;
		1813	w_ = w_->next; /* lets us remove this watcher and all before it */
		1814
		1815	if (w->wd == wd || wd == -1)
		1816	{
		1817	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1818	{
		1819	w->wd = -1;
		1820	infy_add (EV_A_ w); /* re-add, no matter what */
		1821	}
		1822
		1823	stat_timer_cb (EV_A_ &w->timer, 0);
		1824	}
		1825	}
		1826	}
		1827	}
		1828
		1829	static void
		1830	infy_cb (EV_P_ ev_io *w, int revents)
		1831	{
		1832	char buf [EV_INOTIFY_BUFSIZE];
		1833	struct inotify_event *ev = (struct inotify_event *)buf;
		1834	int ofs;
		1835	int len = read (fs_fd, buf, sizeof (buf));
		1836
		1837	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1838	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1839	}
		1840
		1841	void inline_size
		1842	infy_init (EV_P)
		1843	{
		1844	if (fs_fd != -2)
		1845	return;
		1846
		1847	fs_fd = inotify_init ();
		1848
		1849	if (fs_fd >= 0)
		1850	{
		1851	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1852	ev_set_priority (&fs_w, EV_MAXPRI);
		1853	ev_io_start (EV_A_ &fs_w);
		1854	}
		1855	}
		1856
		1857	void inline_size
		1858	infy_fork (EV_P)
		1859	{
		1860	int slot;
		1861
		1862	if (fs_fd < 0)
		1863	return;
		1864
		1865	close (fs_fd);
		1866	fs_fd = inotify_init ();
		1867
		1868	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1869	{
		1870	WL w_ = fs_hash [slot].head;
		1871	fs_hash [slot].head = 0;
		1872
		1873	while (w_)
		1874	{
		1875	ev_stat *w = (ev_stat *)w_;
		1876	w_ = w_->next; /* lets us add this watcher */
		1877
		1878	w->wd = -1;
		1879
		1880	if (fs_fd >= 0)
		1881	infy_add (EV_A_ w); /* re-add, no matter what */
		1882	else
		1883	ev_timer_start (EV_A_ &w->timer);
		1884	}
		1885
		1886	}
		1887	}
		1888
		1889	#endif
		1890
		1891	void
		1892	ev_stat_stat (EV_P_ ev_stat *w)
		1893	{
		1894	if (lstat (w->path, &w->attr) < 0)
		1895	w->attr.st_nlink = 0;
		1896	else if (!w->attr.st_nlink)
		1897	w->attr.st_nlink = 1;
		1898	}
		1899
		1900	static void noinline
		1901	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1902	{
		1903	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1904
		1905	/* we copy this here each the time so that */
		1906	/* prev has the old value when the callback gets invoked */
		1907	w->prev = w->attr;
		1908	ev_stat_stat (EV_A_ w);
		1909
		1910	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1911	if (
		1912	w->prev.st_dev != w->attr.st_dev
		1913	|| w->prev.st_ino != w->attr.st_ino
		1914	|| w->prev.st_mode != w->attr.st_mode
		1915	|| w->prev.st_nlink != w->attr.st_nlink
		1916	|| w->prev.st_uid != w->attr.st_uid
		1917	|| w->prev.st_gid != w->attr.st_gid
		1918	|| w->prev.st_rdev != w->attr.st_rdev
		1919	|| w->prev.st_size != w->attr.st_size
		1920	|| w->prev.st_atime != w->attr.st_atime
		1921	|| w->prev.st_mtime != w->attr.st_mtime
		1922	|| w->prev.st_ctime != w->attr.st_ctime
		1923	) {
		1924	#if EV_USE_INOTIFY
		1925	infy_del (EV_A_ w);
		1926	infy_add (EV_A_ w);
		1927	ev_stat_stat (EV_A_ w); /* avoid race... */
		1928	#endif
		1929
		1930	ev_feed_event (EV_A_ w, EV_STAT);
		1931	}
		1932	}
		1933
		1934	void
		1935	ev_stat_start (EV_P_ ev_stat *w)
		1936	{
		1937	if (expect_false (ev_is_active (w)))
		1938	return;
		1939
		1940	/* since we use memcmp, we need to clear any padding data etc. */
		1941	memset (&w->prev, 0, sizeof (ev_statdata));
		1942	memset (&w->attr, 0, sizeof (ev_statdata));
		1943
		1944	ev_stat_stat (EV_A_ w);
		1945
		1946	if (w->interval < MIN_STAT_INTERVAL)
		1947	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1948
		1949	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1950	ev_set_priority (&w->timer, ev_priority (w));
		1951
		1952	#if EV_USE_INOTIFY
		1953	infy_init (EV_A);
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w);
		1957	else
		1958	#endif
		1959	ev_timer_start (EV_A_ &w->timer);
		1960
		1961	ev_start (EV_A_ (W)w, 1);
		1962	}
		1963
		1964	void
		1965	ev_stat_stop (EV_P_ ev_stat *w)
		1966	{
		1967	ev_clear_pending (EV_A_ (W)w);
		1968	if (expect_false (!ev_is_active (w)))
		1969	return;
		1970
		1971	#if EV_USE_INOTIFY
		1972	infy_del (EV_A_ w);
		1973	#endif
		1974	ev_timer_stop (EV_A_ &w->timer);
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978	#endif
		1979
		1980	void
		1981	ev_idle_start (EV_P_ ev_idle *w)
		1982	{
		1983	if (expect_false (ev_is_active (w)))
		1984	return;
		1985
		1986	ev_start (EV_A_ (W)w, ++idlecnt);
		1987	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1988	idles [idlecnt - 1] = w;
		1989	}
		1990
		1991	void
		1992	ev_idle_stop (EV_P_ ev_idle *w)
		1993	{
		1994	ev_clear_pending (EV_A_ (W)w);
		1995	if (expect_false (!ev_is_active (w)))
		1996	return;
		1997
		1998	{
		1999	int active = ((W)w)->active;
		2000	idles [active - 1] = idles [--idlecnt];
		2001	((W)idles [active - 1])->active = active;
		2002	}
		2003
		2004	ev_stop (EV_A_ (W)w);
		2005	}
		2006
		2007	void
		2008	ev_prepare_start (EV_P_ ev_prepare *w)
		2009	{
		2010	if (expect_false (ev_is_active (w)))
		2011	return;
		2012
		2013	ev_start (EV_A_ (W)w, ++preparecnt);
		2014	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2015	prepares [preparecnt - 1] = w;
		2016	}
		2017
		2018	void
		2019	ev_prepare_stop (EV_P_ ev_prepare *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	{
		2026	int active = ((W)w)->active;
		2027	prepares [active - 1] = prepares [--preparecnt];
		2028	((W)prepares [active - 1])->active = active;
		2029	}
		2030
		2031	ev_stop (EV_A_ (W)w);
		2032	}
		2033
		2034	void
		2035	ev_check_start (EV_P_ ev_check *w)
		2036	{
		2037	if (expect_false (ev_is_active (w)))
		2038	return;
		2039
		2040	ev_start (EV_A_ (W)w, ++checkcnt);
		2041	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2042	checks [checkcnt - 1] = w;
		2043	}
		2044
		2045	void
		2046	ev_check_stop (EV_P_ ev_check *w)
		2047	{
		2048	ev_clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	{
		2053	int active = ((W)w)->active;
		2054	checks [active - 1] = checks [--checkcnt];
		2055	((W)checks [active - 1])->active = active;
		2056	}
		2057
		2058	ev_stop (EV_A_ (W)w);
		2059	}
		2060
		2061	#if EV_EMBED_ENABLE
		2062	void noinline
		2063	ev_embed_sweep (EV_P_ ev_embed *w)
		2064	{
		2065	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2066	}
		2067
		2068	static void
		2069	embed_cb (EV_P_ ev_io *io, int revents)
		2070	{
		2071	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2072
		2073	if (ev_cb (w))
		2074	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2075	else
		2076	ev_embed_sweep (loop, w);
		2077	}
		2078
		2079	void
		2080	ev_embed_start (EV_P_ ev_embed *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	struct ev_loop *loop = w->loop;
		2087	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2088	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2089	}
		2090
		2091	ev_set_priority (&w->io, ev_priority (w));
		2092	ev_io_start (EV_A_ &w->io);
		2093
		2094	ev_start (EV_A_ (W)w, 1);
		2095	}
		2096
		2097	void
		2098	ev_embed_stop (EV_P_ ev_embed *w)
		2099	{
		2100	ev_clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	ev_io_stop (EV_A_ &w->io);
		2105
		2106	ev_stop (EV_A_ (W)w);
		2107	}
		2108	#endif
		2109
		2110	#if EV_FORK_ENABLE
		2111	void
		2112	ev_fork_start (EV_P_ ev_fork *w)
		2113	{
		2114	if (expect_false (ev_is_active (w)))
		2115	return;
		2116
		2117	ev_start (EV_A_ (W)w, ++forkcnt);
		2118	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2119	forks [forkcnt - 1] = w;
		2120	}
		2121
		2122	void
		2123	ev_fork_stop (EV_P_ ev_fork *w)
		2124	{
		2125	ev_clear_pending (EV_A_ (W)w);
		2126	if (expect_false (!ev_is_active (w)))
		2127	return;
		2128
		2129	{
		2130	int active = ((W)w)->active;
		2131	forks [active - 1] = forks [--forkcnt];
		2132	((W)forks [active - 1])->active = active;
		2133	}
		2134
		2135	ev_stop (EV_A_ (W)w);
		2136	}
		2137	#endif
		2138
1536	/*****************************************************************************/	2139	/*****************************************************************************/
1537		2140
1538	struct ev_once	2141	struct ev_once
1539	{	2142	{
1540	struct ev_io io;	2143	ev_io io;
1541	struct ev_timer to;	2144	ev_timer to;
1542	void (*cb)(int revents, void *arg);	2145	void (*cb)(int revents, void *arg);
1543	void *arg;	2146	void *arg;
1544	};	2147	};
1545		2148
1546	static void	2149	static void
…		…
1555		2158
1556	cb (revents, arg);	2159	cb (revents, arg);
1557	}	2160	}
1558		2161
1559	static void	2162	static void
1560	once_cb_io (EV_P_ struct ev_io *w, int revents)	2163	once_cb_io (EV_P_ ev_io *w, int revents)
1561	{	2164	{
1562	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2165	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1563	}	2166	}
1564		2167
1565	static void	2168	static void
1566	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2169	once_cb_to (EV_P_ ev_timer *w, int revents)
1567	{	2170	{
1568	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2171	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1569	}	2172	}
1570		2173
1571	void	2174	void
1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2175	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1573	{	2176	{
1574	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2177	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1575		2178
1576	if (!once)	2179	if (expect_false (!once))
		2180	{
1577	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2181	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1578	else	2182	return;
1579	{	2183	}
		2184
1580	once->cb = cb;	2185	once->cb = cb;
1581	once->arg = arg;	2186	once->arg = arg;
1582		2187
1583	ev_init (&once->io, once_cb_io);	2188	ev_init (&once->io, once_cb_io);
1584	if (fd >= 0)	2189	if (fd >= 0)
1585	{	2190	{
1586	ev_io_set (&once->io, fd, events);	2191	ev_io_set (&once->io, fd, events);
1587	ev_io_start (EV_A_ &once->io);	2192	ev_io_start (EV_A_ &once->io);
1588	}	2193	}
1589		2194
1590	ev_init (&once->to, once_cb_to);	2195	ev_init (&once->to, once_cb_to);
1591	if (timeout >= 0.)	2196	if (timeout >= 0.)
1592	{	2197	{
1593	ev_timer_set (&once->to, timeout, 0.);	2198	ev_timer_set (&once->to, timeout, 0.);
1594	ev_timer_start (EV_A_ &once->to);	2199	ev_timer_start (EV_A_ &once->to);
1595	}
1596	}	2200	}
1597	}	2201	}
1598		2202
		2203	#ifdef __cplusplus
		2204	}
		2205	#endif
		2206

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