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Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.163 by root, Wed Dec 5 13:54:36 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	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	343	#include "ev_vars.h"
228	#undef VAR	344	#undef VAR
229	};	345	};
230	#include "ev_wrap.h"	346	#include "ev_wrap.h"
231		347
232	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
234		350
235	#else	351	#else
236		352
		353	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	355	#include "ev_vars.h"
239	#undef VAR	356	#undef VAR
240		357
241	static int default_loop;	358	static int ev_default_loop_ptr;
242		359
243	#endif	360	#endif
244		361
245	/*****************************************************************************/	362	/*****************************************************************************/
246		363
247	inline ev_tstamp	364	ev_tstamp
248	ev_time (void)	365	ev_time (void)
249	{	366	{
250	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
251	struct timespec ts;	368	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	375	#endif
259	}	376	}
260		377
261	inline ev_tstamp	378	ev_tstamp inline_size
262	get_clock (void)	379	get_clock (void)
263	{	380	{
264	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
266	{	383	{
…		…
279	{	396	{
280	return ev_rt_now;	397	return ev_rt_now;
281	}	398	}
282	#endif	399	#endif
283		400
284	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
285		428
286	#define array_needsize(type,base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
287	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
288	{ \	431	{ \
289	int newcnt = cur; \	432	int ocur_ = (cur); \
290	do \	433	(base) = (type *)array_realloc \
291	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
292	newcnt = array_roundsize (type, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
293	} \
294	while ((cnt) > newcnt); \
295	\
296	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
297	init (base + cur, newcnt - cur); \
298	cur = newcnt; \
299	}	436	}
300		437
		438	#if 0
301	#define array_slim(type,stem) \	439	#define array_slim(type,stem) \
302	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
303	{ \	441	{ \
304	stem ## max = array_roundsize (stem ## cnt >> 1); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
305	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
307	}	445	}
308		446	#endif
309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311	#define array_free_microshit(stem) \
312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313		447
314	#define array_free(stem, idx) \	448	#define array_free(stem, idx) \
315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
316		450
317	/*****************************************************************************/	451	/*****************************************************************************/
318		452
319	static void	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
		455	{
		456	W w_ = (W)w;
		457
		458	if (expect_false (w_->pending))
		459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
		463
		464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
320	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
321	{	483	{
322	while (count--)	484	while (count--)
323	{	485	{
324	base->head = 0;	486	base->head = 0;
…		…
327		489
328	++base;	490	++base;
329	}	491	}
330	}	492	}
331		493
332	void	494	void inline_speed
333	ev_feed_event (EV_P_ void *w, int revents)
334	{
335	W w_ = (W)w;
336
337	if (w_->pending)
338	{
339	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
340	return;
341	}
342
343	w_->pending = ++pendingcnt [ABSPRI (w_)];
344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347	}
348
349	static void
350	queue_events (EV_P_ W *events, int eventcnt, int type)
351	{
352	int i;
353
354	for (i = 0; i < eventcnt; ++i)
355	ev_feed_event (EV_A_ events [i], type);
356	}
357
358	inline void
359	fd_event (EV_P_ int fd, int revents)	495	fd_event (EV_P_ int fd, int revents)
360	{	496	{
361	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
362	struct ev_io *w;	498	ev_io *w;
363		499
364	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
365	{	501	{
366	int ev = w->events & revents;	502	int ev = w->events & revents;
367		503
368	if (ev)	504	if (ev)
369	ev_feed_event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
…		…
374	ev_feed_fd_event (EV_P_ int fd, int revents)	510	ev_feed_fd_event (EV_P_ int fd, int revents)
375	{	511	{
376	fd_event (EV_A_ fd, revents);	512	fd_event (EV_A_ fd, revents);
377	}	513	}
378		514
379	/*****************************************************************************/	515	void inline_size
380
381	static void
382	fd_reify (EV_P)	516	fd_reify (EV_P)
383	{	517	{
384	int i;	518	int i;
385		519
386	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
387	{	521	{
388	int fd = fdchanges [i];	522	int fd = fdchanges [i];
389	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
390	struct ev_io *w;	524	ev_io *w;
391		525
392	int events = 0;	526	int events = 0;
393		527
394	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
395	events |= w->events;	529	events |= w->events;
396		530
		531	#if EV_SELECT_IS_WINSOCKET
		532	if (events)
		533	{
		534	unsigned long argp;
		535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		537	}
		538	#endif
		539
397	anfd->reify = 0;	540	anfd->reify = 0;
398		541
399	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
400	anfd->events = events;	543	anfd->events = events;
401	}	544	}
402		545
403	fdchangecnt = 0;	546	fdchangecnt = 0;
404	}	547	}
405		548
406	static void	549	void inline_size
407	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
408	{	551	{
409	if (anfds [fd].reify)	552	if (expect_false (anfds [fd].reify))
410	return;	553	return;
411		554
412	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
413		556
414	++fdchangecnt;	557	++fdchangecnt;
415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
417	}	560	}
418		561
419	static void	562	void inline_speed
420	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
421	{	564	{
422	struct ev_io *w;	565	ev_io *w;
423		566
424	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
425	{	568	{
426	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
427	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
428	}	571	}
429	}	572	}
430		573
431	static int	574	int inline_size
432	fd_valid (int fd)	575	fd_valid (int fd)
433	{	576	{
434	#ifdef WIN32	577	#ifdef _WIN32
435	return !!win32_get_osfhandle (fd);	578	return _get_osfhandle (fd) != -1;
436	#else	579	#else
437	return fcntl (fd, F_GETFD) != -1;	580	return fcntl (fd, F_GETFD) != -1;
438	#endif	581	#endif
439	}	582	}
440		583
441	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
442	static void	585	static void noinline
443	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
444	{	587	{
445	int fd;	588	int fd;
446		589
447	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
…		…
449	if (!fd_valid (fd) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
450	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
451	}	594	}
452		595
453	/* called on ENOMEM in select/poll to kill some fds and retry */	596	/* called on ENOMEM in select/poll to kill some fds and retry */
454	static void	597	static void noinline
455	fd_enomem (EV_P)	598	fd_enomem (EV_P)
456	{	599	{
457	int fd;	600	int fd;
458		601
459	for (fd = anfdmax; fd--; )	602	for (fd = anfdmax; fd--; )
…		…
462	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
463	return;	606	return;
464	}	607	}
465	}	608	}
466		609
467	/* usually called after fork if method needs to re-arm all fds from scratch */	610	/* usually called after fork if backend needs to re-arm all fds from scratch */
468	static void	611	static void noinline
469	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
470	{	613	{
471	int fd;	614	int fd;
472		615
473	/* this should be highly optimised to not do anything but set a flag */
474	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
475	if (anfds [fd].events)	617	if (anfds [fd].events)
476	{	618	{
477	anfds [fd].events = 0;	619	anfds [fd].events = 0;
478	fd_change (EV_A_ fd);	620	fd_change (EV_A_ fd);
479	}	621	}
480	}	622	}
481		623
482	/*****************************************************************************/	624	/*****************************************************************************/
483		625
484	static void	626	void inline_speed
485	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
486	{	628	{
487	WT w = heap [k];	629	WT w = heap [k];
488		630
489	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
…		…
496	heap [k] = w;	638	heap [k] = w;
497	((W)heap [k])->active = k + 1;	639	((W)heap [k])->active = k + 1;
498		640
499	}	641	}
500		642
501	static void	643	void inline_speed
502	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
503	{	645	{
504	WT w = heap [k];	646	WT w = heap [k];
505		647
506	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
520		662
521	heap [k] = w;	663	heap [k] = w;
522	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
523	}	665	}
524		666
525	inline void	667	void inline_size
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	668	adjustheap (WT *heap, int N, int k)
527	{	669	{
528	ev_tstamp old_at = heap [k]->at;	670	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	671	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	672	}
536		673
537	/*****************************************************************************/	674	/*****************************************************************************/
538		675
539	typedef struct	676	typedef struct
…		…
545	static ANSIG *signals;	682	static ANSIG *signals;
546	static int signalmax;	683	static int signalmax;
547		684
548	static int sigpipe [2];	685	static int sigpipe [2];
549	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
550	static struct ev_io sigev;	687	static ev_io sigev;
551		688
552	static void	689	void inline_size
553	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
554	{	691	{
555	while (count--)	692	while (count--)
556	{	693	{
557	base->head = 0;	694	base->head = 0;
…		…
562	}	699	}
563		700
564	static void	701	static void
565	sighandler (int signum)	702	sighandler (int signum)
566	{	703	{
567	#if WIN32	704	#if _WIN32
568	signal (signum, sighandler);	705	signal (signum, sighandler);
569	#endif	706	#endif
570		707
571	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
572		709
573	if (!gotsig)	710	if (!gotsig)
574	{	711	{
575	int old_errno = errno;	712	int old_errno = errno;
576	gotsig = 1;	713	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	715	errno = old_errno;
583	}	716	}
584	}	717	}
585		718
586	void	719	void noinline
587	ev_feed_signal_event (EV_P_ int signum)	720	ev_feed_signal_event (EV_P_ int signum)
588	{	721	{
589	WL w;	722	WL w;
590		723
591	#if EV_MULTIPLICITY	724	#if EV_MULTIPLICITY
592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593	#endif	726	#endif
594		727
595	--signum;	728	--signum;
596		729
597	if (signum < 0 || signum >= signalmax)	730	if (signum < 0 || signum >= signalmax)
…		…
602	for (w = signals [signum].head; w; w = w->next)	735	for (w = signals [signum].head; w; w = w->next)
603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604	}	737	}
605		738
606	static void	739	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
608	{	741	{
609	int signum;	742	int signum;
610		743
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	745	gotsig = 0;
617		746
618	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	749	ev_feed_signal_event (EV_A_ signum + 1);
621	}	750	}
622		751
623	static void	752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
624	siginit (EV_P)	765	siginit (EV_P)
625	{	766	{
626	#ifndef WIN32	767	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630	/* rather than sort out wether we really need nb, set it */
631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633	#endif
634		769
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	773	}
639		774
640	/*****************************************************************************/	775	/*****************************************************************************/
641		776
642	static struct ev_child *childs [PID_HASHSIZE];	777	static ev_child *childs [EV_PID_HASHSIZE];
643		778
644	#ifndef WIN32	779	#ifndef _WIN32
645		780
646	static struct ev_signal childev;	781	static ev_signal childev;
647		782
648	#ifndef WCONTINUED	783	void inline_speed
649	# define WCONTINUED 0
650	#endif
651
652	static void
653	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
654	{	785	{
655	struct ev_child *w;	786	ev_child *w;
656		787
657	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
658	if (w->pid == pid || !w->pid)	789	if (w->pid == pid || !w->pid)
659	{	790	{
660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	791	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661	w->rpid = pid;	792	w->rpid = pid;
662	w->rstatus = status;	793	w->rstatus = status;
663	ev_feed_event (EV_A_ (W)w, EV_CHILD);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
664	}	795	}
665	}	796	}
666		797
		798	#ifndef WCONTINUED
		799	# define WCONTINUED 0
		800	#endif
		801
667	static void	802	static void
668	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
669	{	804	{
670	int pid, status;	805	int pid, status;
671		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
674	/* make sure we are called again until all childs have been reaped */	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		817
677	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
679	}
680	}	821	}
681		822
682	#endif	823	#endif
683		824
684	/*****************************************************************************/	825	/*****************************************************************************/
685		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
686	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
688	#endif	832	#endif
689	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
707	{	851	{
708	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
709	}	853	}
710		854
711	/* return true if we are running with elevated privileges and should ignore env variables */	855	/* return true if we are running with elevated privileges and should ignore env variables */
712	static int	856	int inline_size
713	enable_secure (void)	857	enable_secure (void)
714	{	858	{
715	#ifdef WIN32	859	#ifdef _WIN32
716	return 0;	860	return 0;
717	#else	861	#else
718	return getuid () != geteuid ()	862	return getuid () != geteuid ()
719	|| getgid () != getegid ();	863	|| getgid () != getegid ();
720	#endif	864	#endif
721	}	865	}
722		866
723	int	867	unsigned int
724	ev_method (EV_P)	868	ev_supported_backends (void)
725	{	869	{
726	return method;	870	unsigned int flags = 0;
727	}
728		871
729	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730	loop_init (EV_P_ int methods)	873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
731	{	883	{
732	if (!method)	884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
733	{	923	{
734	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
735	{	925	{
736	struct timespec ts;	926	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	932	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	933	mn_now = get_clock ();
744	now_floor = mn_now;	934	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
746		936
747	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
748	if (!enable_secure () && getenv ("LIBEV_METHODS"))	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
		942
		943	if (!(flags & EVFLAG_NOENV)
		944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		947
753	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
754	#if EV_USE_WIN32	953	#if EV_USE_INOTIFY
755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756	#endif	959	#endif
757	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	962	#endif
760	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	965	#endif
763	#if EV_USE_POLL	966	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	968	#endif
766	#if EV_USE_SELECT	969	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	971	#endif
769		972
770	ev_init (&sigev, sigcb);	973	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	974	ev_set_priority (&sigev, EV_MAXPRI);
772	}	975	}
773	}	976	}
774		977
775	void	978	static void noinline
776	loop_destroy (EV_P)	979	loop_destroy (EV_P)
777	{	980	{
778	int i;	981	int i;
779		982
780	#if EV_USE_WIN32	983	#if EV_USE_INOTIFY
781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782	#endif	993	#endif
783	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	996	#endif
786	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	999	#endif
789	#if EV_USE_POLL	1000	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	1002	#endif
792	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	1005	#endif
795		1006
796	for (i = NUMPRI; i--; )	1007	for (i = NUMPRI; i--; )
797	array_free (pending, [i]);	1008	array_free (pending, [i]);
798		1009
799	/* have to use the microsoft-never-gets-it-right macro */	1010	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	1011	array_free (fdchange, EMPTY0);
801	array_free_microshit (timer);	1012	array_free (timer, EMPTY0);
802	array_free_microshit (periodic);	1013	#if EV_PERIODIC_ENABLE
803	array_free_microshit (idle);	1014	array_free (periodic, EMPTY0);
804	array_free_microshit (prepare);	1015	#endif
805	array_free_microshit (check);	1016	array_free (idle, EMPTY0);
		1017	array_free (prepare, EMPTY0);
		1018	array_free (check, EMPTY0);
806		1019
807	method = 0;	1020	backend = 0;
808	}	1021	}
809		1022
810	static void	1023	void inline_size infy_fork (EV_P);
		1024
		1025	void inline_size
811	loop_fork (EV_P)	1026	loop_fork (EV_P)
812	{	1027	{
		1028	#if EV_USE_PORT
		1029	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1030	#endif
		1031	#if EV_USE_KQUEUE
		1032	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1033	#endif
813	#if EV_USE_EPOLL	1034	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1035	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif	1036	#endif
816	#if EV_USE_KQUEUE	1037	#if EV_USE_INOTIFY
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1038	infy_fork (EV_A);
818	#endif	1039	#endif
819		1040
820	if (ev_is_active (&sigev))	1041	if (ev_is_active (&sigev))
821	{	1042	{
822	/* default loop */	1043	/* default loop */
…		…
835	postfork = 0;	1056	postfork = 0;
836	}	1057	}
837		1058
838	#if EV_MULTIPLICITY	1059	#if EV_MULTIPLICITY
839	struct ev_loop *	1060	struct ev_loop *
840	ev_loop_new (int methods)	1061	ev_loop_new (unsigned int flags)
841	{	1062	{
842	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1063	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
843		1064
844	memset (loop, 0, sizeof (struct ev_loop));	1065	memset (loop, 0, sizeof (struct ev_loop));
845		1066
846	loop_init (EV_A_ methods);	1067	loop_init (EV_A_ flags);
847		1068
848	if (ev_method (EV_A))	1069	if (ev_backend (EV_A))
849	return loop;	1070	return loop;
850		1071
851	return 0;	1072	return 0;
852	}	1073	}
853		1074
…		…
866		1087
867	#endif	1088	#endif
868		1089
869	#if EV_MULTIPLICITY	1090	#if EV_MULTIPLICITY
870	struct ev_loop *	1091	struct ev_loop *
		1092	ev_default_loop_init (unsigned int flags)
871	#else	1093	#else
872	int	1094	int
		1095	ev_default_loop (unsigned int flags)
873	#endif	1096	#endif
874	ev_default_loop (int methods)
875	{	1097	{
876	if (sigpipe [0] == sigpipe [1])	1098	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	1099	if (pipe (sigpipe))
878	return 0;	1100	return 0;
879		1101
880	if (!default_loop)	1102	if (!ev_default_loop_ptr)
881	{	1103	{
882	#if EV_MULTIPLICITY	1104	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	1105	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	1106	#else
885	default_loop = 1;	1107	ev_default_loop_ptr = 1;
886	#endif	1108	#endif
887		1109
888	loop_init (EV_A_ methods);	1110	loop_init (EV_A_ flags);
889		1111
890	if (ev_method (EV_A))	1112	if (ev_backend (EV_A))
891	{	1113	{
892	siginit (EV_A);	1114	siginit (EV_A);
893		1115
894	#ifndef WIN32	1116	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1117	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1118	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1119	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1120	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1121	#endif
900	}	1122	}
901	else	1123	else
902	default_loop = 0;	1124	ev_default_loop_ptr = 0;
903	}	1125	}
904		1126
905	return default_loop;	1127	return ev_default_loop_ptr;
906	}	1128	}
907		1129
908	void	1130	void
909	ev_default_destroy (void)	1131	ev_default_destroy (void)
910	{	1132	{
911	#if EV_MULTIPLICITY	1133	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1134	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1135	#endif
914		1136
915	#ifndef WIN32	1137	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1138	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1139	ev_signal_stop (EV_A_ &childev);
918	#endif	1140	#endif
919		1141
920	ev_ref (EV_A); /* signal watcher */	1142	ev_ref (EV_A); /* signal watcher */
…		…
928		1150
929	void	1151	void
930	ev_default_fork (void)	1152	ev_default_fork (void)
931	{	1153	{
932	#if EV_MULTIPLICITY	1154	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1155	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1156	#endif
935		1157
936	if (method)	1158	if (backend)
937	postfork = 1;	1159	postfork = 1;
938	}	1160	}
939		1161
940	/*****************************************************************************/	1162	/*****************************************************************************/
941		1163
942	static int	1164	int inline_size
943	any_pending (EV_P)	1165	any_pending (EV_P)
944	{	1166	{
945	int pri;	1167	int pri;
946		1168
947	for (pri = NUMPRI; pri--; )	1169	for (pri = NUMPRI; pri--; )
…		…
949	return 1;	1171	return 1;
950		1172
951	return 0;	1173	return 0;
952	}	1174	}
953		1175
954	static void	1176	void inline_speed
955	call_pending (EV_P)	1177	call_pending (EV_P)
956	{	1178	{
957	int pri;	1179	int pri;
958		1180
959	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
961	{	1183	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1185
964	if (p->w)	1186	if (expect_true (p->w))
965	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
966	p->w->pending = 0;	1190	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
968	}	1192	}
969	}	1193	}
970	}	1194	}
971		1195
972	static void	1196	void inline_size
973	timers_reify (EV_P)	1197	timers_reify (EV_P)
974	{	1198	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1200	{
977	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
978		1202
979	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980		1204
981	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
982	if (w->repeat)	1206	if (w->repeat)
983	{	1207	{
984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1209
985	((WT)w)->at = mn_now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
986	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
987	}	1215	}
988	else	1216	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1218
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1220	}
993	}	1221	}
994		1222
995	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
996	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
997	{	1226	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1228	{
1000	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
1001		1230
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003		1232
1004	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1234	if (w->reschedule_cb)
1006	{	1235	{
1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1008
1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1238	downheap ((WT *)periodics, periodiccnt, 0);
1011	}	1239	}
1012	else if (w->interval)	1240	else if (w->interval)
1013	{	1241	{
…		…
1020		1248
1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022	}	1250	}
1023	}	1251	}
1024		1252
1025	static void	1253	static void noinline
1026	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
1027	{	1255	{
1028	int i;	1256	int i;
1029		1257
1030	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
1031	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
1032	{	1260	{
1033	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
1034		1262
1035	if (w->reschedule_cb)	1263	if (w->reschedule_cb)
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037	else if (w->interval)	1265	else if (w->interval)
1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1040		1268
1041	/* now rebuild the heap */	1269	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1270	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1271	downheap ((WT *)periodics, periodiccnt, i);
1044	}	1272	}
		1273	#endif
1045		1274
1046	inline int	1275	int inline_size
1047	time_update_monotonic (EV_P)	1276	time_update_monotonic (EV_P)
1048	{	1277	{
1049	mn_now = get_clock ();	1278	mn_now = get_clock ();
1050		1279
1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1280	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1059	ev_rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
1060	return 1;	1289	return 1;
1061	}	1290	}
1062	}	1291	}
1063		1292
1064	static void	1293	void inline_size
1065	time_update (EV_P)	1294	time_update (EV_P)
1066	{	1295	{
1067	int i;	1296	int i;
1068		1297
1069	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
…		…
1071	{	1300	{
1072	if (time_update_monotonic (EV_A))	1301	if (time_update_monotonic (EV_A))
1073	{	1302	{
1074	ev_tstamp odiff = rtmn_diff;	1303	ev_tstamp odiff = rtmn_diff;
1075		1304
1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1305	/* loop a few times, before making important decisions.
		1306	* on the choice of "4": one iteration isn't enough,
		1307	* in case we get preempted during the calls to
		1308	* ev_time and get_clock. a second call is almost guaranteed
		1309	* to succeed in that case, though. and looping a few more times
		1310	* doesn't hurt either as we only do this on time-jumps or
		1311	* in the unlikely event of having been preempted here.
		1312	*/
		1313	for (i = 4; --i; )
1077	{	1314	{
1078	rtmn_diff = ev_rt_now - mn_now;	1315	rtmn_diff = ev_rt_now - mn_now;
1079		1316
1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1317	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081	return; /* all is well */	1318	return; /* all is well */
…		…
1083	ev_rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1321	mn_now = get_clock ();
1085	now_floor = mn_now;	1322	now_floor = mn_now;
1086	}	1323	}
1087		1324
		1325	# if EV_PERIODIC_ENABLE
1088	periodics_reschedule (EV_A);	1326	periodics_reschedule (EV_A);
		1327	# endif
1089	/* no timer adjustment, as the monotonic clock doesn't jump */	1328	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1329	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}	1330	}
1092	}	1331	}
1093	else	1332	else
…		…
1095	{	1334	{
1096	ev_rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
1097		1336
1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1337	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{	1338	{
		1339	#if EV_PERIODIC_ENABLE
1100	periodics_reschedule (EV_A);	1340	periodics_reschedule (EV_A);
		1341	#endif
1101		1342
1102	/* adjust timers. this is easy, as the offset is the same for all */	1343	/* adjust timers. this is easy, as the offset is the same for all of them */
1103	for (i = 0; i < timercnt; ++i)	1344	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1345	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1346	}
1106		1347
1107	mn_now = ev_rt_now;	1348	mn_now = ev_rt_now;
…		…
1123	static int loop_done;	1364	static int loop_done;
1124		1365
1125	void	1366	void
1126	ev_loop (EV_P_ int flags)	1367	ev_loop (EV_P_ int flags)
1127	{	1368	{
1128	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1369	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1370	? EVUNLOOP_ONE
		1371	: EVUNLOOP_CANCEL;
		1372
		1373	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1130		1374
1131	do	1375	do
1132	{	1376	{
		1377	#ifndef _WIN32
		1378	if (expect_false (curpid)) /* penalise the forking check even more */
		1379	if (expect_false (getpid () != curpid))
		1380	{
		1381	curpid = getpid ();
		1382	postfork = 1;
		1383	}
		1384	#endif
		1385
		1386	#if EV_FORK_ENABLE
		1387	/* we might have forked, so queue fork handlers */
		1388	if (expect_false (postfork))
		1389	if (forkcnt)
		1390	{
		1391	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1392	call_pending (EV_A);
		1393	}
		1394	#endif
		1395
1133	/* queue check watchers (and execute them) */	1396	/* queue check watchers (and execute them) */
1134	if (expect_false (preparecnt))	1397	if (expect_false (preparecnt))
1135	{	1398	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1399	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137	call_pending (EV_A);	1400	call_pending (EV_A);
1138	}	1401	}
1139		1402
		1403	if (expect_false (!activecnt))
		1404	break;
		1405
1140	/* we might have forked, so reify kernel state if necessary */	1406	/* we might have forked, so reify kernel state if necessary */
1141	if (expect_false (postfork))	1407	if (expect_false (postfork))
1142	loop_fork (EV_A);	1408	loop_fork (EV_A);
1143		1409
1144	/* update fd-related kernel structures */	1410	/* update fd-related kernel structures */
1145	fd_reify (EV_A);	1411	fd_reify (EV_A);
1146		1412
1147	/* calculate blocking time */	1413	/* calculate blocking time */
		1414	{
		1415	ev_tstamp block;
1148		1416
1149	/* we only need this for !monotonic clock or timers, but as we basically	1417	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1150	always have timers, we just calculate it always */	1418	block = 0.; /* do not block at all */
		1419	else
		1420	{
		1421	/* update time to cancel out callback processing overhead */
1151	#if EV_USE_MONOTONIC	1422	#if EV_USE_MONOTONIC
1152	if (expect_true (have_monotonic))	1423	if (expect_true (have_monotonic))
1153	time_update_monotonic (EV_A);	1424	time_update_monotonic (EV_A);
1154	else	1425	else
1155	#endif	1426	#endif
1156	{	1427	{
1157	ev_rt_now = ev_time ();	1428	ev_rt_now = ev_time ();
1158	mn_now = ev_rt_now;	1429	mn_now = ev_rt_now;
1159	}	1430	}
1160		1431
1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
1162	block = 0.;
1163	else
1164	{
1165	block = MAX_BLOCKTIME;	1432	block = MAX_BLOCKTIME;
1166		1433
1167	if (timercnt)	1434	if (timercnt)
1168	{	1435	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1436	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1437	if (block > to) block = to;
1171	}	1438	}
1172		1439
		1440	#if EV_PERIODIC_ENABLE
1173	if (periodiccnt)	1441	if (periodiccnt)
1174	{	1442	{
1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1443	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176	if (block > to) block = to;	1444	if (block > to) block = to;
1177	}	1445	}
		1446	#endif
1178		1447
1179	if (block < 0.) block = 0.;	1448	if (expect_false (block < 0.)) block = 0.;
1180	}	1449	}
1181		1450
		1451	++loop_count;
1182	method_poll (EV_A_ block);	1452	backend_poll (EV_A_ block);
		1453	}
1183		1454
1184	/* update ev_rt_now, do magic */	1455	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1456	time_update (EV_A);
1186		1457
1187	/* queue pending timers and reschedule them */	1458	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1459	timers_reify (EV_A); /* relative timers called last */
		1460	#if EV_PERIODIC_ENABLE
1189	periodics_reify (EV_A); /* absolute timers called first */	1461	periodics_reify (EV_A); /* absolute timers called first */
		1462	#endif
1190		1463
1191	/* queue idle watchers unless io or timers are pending */	1464	/* queue idle watchers unless other events are pending */
1192	if (idlecnt && !any_pending (EV_A))	1465	if (idlecnt && !any_pending (EV_A))
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1466	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1194		1467
1195	/* queue check watchers, to be executed first */	1468	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1469	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1470	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1471
1199	call_pending (EV_A);	1472	call_pending (EV_A);
		1473
1200	}	1474	}
1201	while (activecnt && !loop_done);	1475	while (expect_true (activecnt && !loop_done));
1202		1476
1203	if (loop_done != 2)	1477	if (loop_done == EVUNLOOP_ONE)
1204	loop_done = 0;	1478	loop_done = EVUNLOOP_CANCEL;
1205	}	1479	}
1206		1480
1207	void	1481	void
1208	ev_unloop (EV_P_ int how)	1482	ev_unloop (EV_P_ int how)
1209	{	1483	{
1210	loop_done = how;	1484	loop_done = how;
1211	}	1485	}
1212		1486
1213	/*****************************************************************************/	1487	/*****************************************************************************/
1214		1488
1215	inline void	1489	void inline_size
1216	wlist_add (WL *head, WL elem)	1490	wlist_add (WL *head, WL elem)
1217	{	1491	{
1218	elem->next = *head;	1492	elem->next = *head;
1219	*head = elem;	1493	*head = elem;
1220	}	1494	}
1221		1495
1222	inline void	1496	void inline_size
1223	wlist_del (WL *head, WL elem)	1497	wlist_del (WL *head, WL elem)
1224	{	1498	{
1225	while (*head)	1499	while (*head)
1226	{	1500	{
1227	if (*head == elem)	1501	if (*head == elem)
…		…
1232		1506
1233	head = &(*head)->next;	1507	head = &(*head)->next;
1234	}	1508	}
1235	}	1509	}
1236		1510
1237	inline void	1511	void inline_speed
1238	ev_clear_pending (EV_P_ W w)	1512	ev_clear_pending (EV_P_ W w)
1239	{	1513	{
1240	if (w->pending)	1514	if (w->pending)
1241	{	1515	{
1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1516	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243	w->pending = 0;	1517	w->pending = 0;
1244	}	1518	}
1245	}	1519	}
1246		1520
1247	inline void	1521	void inline_speed
1248	ev_start (EV_P_ W w, int active)	1522	ev_start (EV_P_ W w, int active)
1249	{	1523	{
1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1524	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1525	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252		1526
1253	w->active = active;	1527	w->active = active;
1254	ev_ref (EV_A);	1528	ev_ref (EV_A);
1255	}	1529	}
1256		1530
1257	inline void	1531	void inline_size
1258	ev_stop (EV_P_ W w)	1532	ev_stop (EV_P_ W w)
1259	{	1533	{
1260	ev_unref (EV_A);	1534	ev_unref (EV_A);
1261	w->active = 0;	1535	w->active = 0;
1262	}	1536	}
1263		1537
1264	/*****************************************************************************/	1538	/*****************************************************************************/
1265		1539
1266	void	1540	void
1267	ev_io_start (EV_P_ struct ev_io *w)	1541	ev_io_start (EV_P_ ev_io *w)
1268	{	1542	{
1269	int fd = w->fd;	1543	int fd = w->fd;
1270		1544
1271	if (ev_is_active (w))	1545	if (expect_false (ev_is_active (w)))
1272	return;	1546	return;
1273		1547
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1548	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1549
1276	ev_start (EV_A_ (W)w, 1);	1550	ev_start (EV_A_ (W)w, 1);
…		…
1279		1553
1280	fd_change (EV_A_ fd);	1554	fd_change (EV_A_ fd);
1281	}	1555	}
1282		1556
1283	void	1557	void
1284	ev_io_stop (EV_P_ struct ev_io *w)	1558	ev_io_stop (EV_P_ ev_io *w)
1285	{	1559	{
1286	ev_clear_pending (EV_A_ (W)w);	1560	ev_clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1561	if (expect_false (!ev_is_active (w)))
1288	return;	1562	return;
		1563
		1564	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1289		1565
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1566	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1567	ev_stop (EV_A_ (W)w);
1292		1568
1293	fd_change (EV_A_ w->fd);	1569	fd_change (EV_A_ w->fd);
1294	}	1570	}
1295		1571
1296	void	1572	void
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1573	ev_timer_start (EV_P_ ev_timer *w)
1298	{	1574	{
1299	if (ev_is_active (w))	1575	if (expect_false (ev_is_active (w)))
1300	return;	1576	return;
1301		1577
1302	((WT)w)->at += mn_now;	1578	((WT)w)->at += mn_now;
1303		1579
1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1580	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305		1581
1306	ev_start (EV_A_ (W)w, ++timercnt);	1582	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1583	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1308	timers [timercnt - 1] = w;	1584	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);	1585	upheap ((WT *)timers, timercnt - 1);
1310		1586
		1587	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1588	}
		1589
		1590	void
		1591	ev_timer_stop (EV_P_ ev_timer *w)
		1592	{
		1593	ev_clear_pending (EV_A_ (W)w);
		1594	if (expect_false (!ev_is_active (w)))
		1595	return;
		1596
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1597	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}
1313		1598
1314	void	1599	{
1315	ev_timer_stop (EV_P_ struct ev_timer *w)	1600	int active = ((W)w)->active;
1316	{
1317	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))
1319	return;
1320		1601
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1602	if (expect_true (--active < --timercnt))
1322
1323	if (((W)w)->active < timercnt--)
1324	{	1603	{
1325	timers [((W)w)->active - 1] = timers [timercnt];	1604	timers [active] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1605	adjustheap ((WT *)timers, timercnt, active);
1327	}	1606	}
		1607	}
1328		1608
1329	((WT)w)->at = w->repeat;	1609	((WT)w)->at -= mn_now;
1330		1610
1331	ev_stop (EV_A_ (W)w);	1611	ev_stop (EV_A_ (W)w);
1332	}	1612	}
1333		1613
1334	void	1614	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)	1615	ev_timer_again (EV_P_ ev_timer *w)
1336	{	1616	{
1337	if (ev_is_active (w))	1617	if (ev_is_active (w))
1338	{	1618	{
1339	if (w->repeat)	1619	if (w->repeat)
		1620	{
		1621	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1622	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1623	}
1341	else	1624	else
1342	ev_timer_stop (EV_A_ w);	1625	ev_timer_stop (EV_A_ w);
1343	}	1626	}
1344	else if (w->repeat)	1627	else if (w->repeat)
		1628	{
		1629	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1630	ev_timer_start (EV_A_ w);
		1631	}
1346	}	1632	}
1347		1633
		1634	#if EV_PERIODIC_ENABLE
1348	void	1635	void
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1636	ev_periodic_start (EV_P_ ev_periodic *w)
1350	{	1637	{
1351	if (ev_is_active (w))	1638	if (expect_false (ev_is_active (w)))
1352	return;	1639	return;
1353		1640
1354	if (w->reschedule_cb)	1641	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1642	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1643	else if (w->interval)
…		…
1359	/* this formula differs from the one in periodic_reify because we do not always round up */	1646	/* this formula differs from the one in periodic_reify because we do not always round up */
1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1647	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1361	}	1648	}
1362		1649
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1650	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1651	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1652	periodics [periodiccnt - 1] = w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1653	upheap ((WT *)periodics, periodiccnt - 1);
1367		1654
		1655	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1656	}
		1657
		1658	void
		1659	ev_periodic_stop (EV_P_ ev_periodic *w)
		1660	{
		1661	ev_clear_pending (EV_A_ (W)w);
		1662	if (expect_false (!ev_is_active (w)))
		1663	return;
		1664
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1665	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1369	}
1370		1666
1371	void	1667	{
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1668	int active = ((W)w)->active;
1373	{
1374	ev_clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))
1376	return;
1377		1669
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1670	if (expect_true (--active < --periodiccnt))
1379
1380	if (((W)w)->active < periodiccnt--)
1381	{	1671	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1672	periodics [active] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1673	adjustheap ((WT *)periodics, periodiccnt, active);
1384	}	1674	}
		1675	}
1385		1676
1386	ev_stop (EV_A_ (W)w);	1677	ev_stop (EV_A_ (W)w);
1387	}	1678	}
1388		1679
1389	void	1680	void
1390	ev_periodic_again (EV_P_ struct ev_periodic *w)	1681	ev_periodic_again (EV_P_ ev_periodic *w)
1391	{	1682	{
1392	/* TODO: use adjustheap and recalculation */	1683	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1684	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1685	ev_periodic_start (EV_A_ w);
1395	}	1686	}
1396		1687	#endif
1397	void
1398	ev_idle_start (EV_P_ struct ev_idle *w)
1399	{
1400	if (ev_is_active (w))
1401	return;
1402
1403	ev_start (EV_A_ (W)w, ++idlecnt);
1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1405	idles [idlecnt - 1] = w;
1406	}
1407
1408	void
1409	ev_idle_stop (EV_P_ struct ev_idle *w)
1410	{
1411	ev_clear_pending (EV_A_ (W)w);
1412	if (ev_is_active (w))
1413	return;
1414
1415	idles [((W)w)->active - 1] = idles [--idlecnt];
1416	ev_stop (EV_A_ (W)w);
1417	}
1418
1419	void
1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
1421	{
1422	if (ev_is_active (w))
1423	return;
1424
1425	ev_start (EV_A_ (W)w, ++preparecnt);
1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1427	prepares [preparecnt - 1] = w;
1428	}
1429
1430	void
1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432	{
1433	ev_clear_pending (EV_A_ (W)w);
1434	if (ev_is_active (w))
1435	return;
1436
1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438	ev_stop (EV_A_ (W)w);
1439	}
1440
1441	void
1442	ev_check_start (EV_P_ struct ev_check *w)
1443	{
1444	if (ev_is_active (w))
1445	return;
1446
1447	ev_start (EV_A_ (W)w, ++checkcnt);
1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1449	checks [checkcnt - 1] = w;
1450	}
1451
1452	void
1453	ev_check_stop (EV_P_ struct ev_check *w)
1454	{
1455	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))
1457	return;
1458
1459	checks [((W)w)->active - 1] = checks [--checkcnt];
1460	ev_stop (EV_A_ (W)w);
1461	}
1462		1688
1463	#ifndef SA_RESTART	1689	#ifndef SA_RESTART
1464	# define SA_RESTART 0	1690	# define SA_RESTART 0
1465	#endif	1691	#endif
1466		1692
1467	void	1693	void
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1694	ev_signal_start (EV_P_ ev_signal *w)
1469	{	1695	{
1470	#if EV_MULTIPLICITY	1696	#if EV_MULTIPLICITY
1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1697	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472	#endif	1698	#endif
1473	if (ev_is_active (w))	1699	if (expect_false (ev_is_active (w)))
1474	return;	1700	return;
1475		1701
1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1702	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477		1703
1478	ev_start (EV_A_ (W)w, 1);	1704	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1705	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1706	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1481		1707
1482	if (!((WL)w)->next)	1708	if (!((WL)w)->next)
1483	{	1709	{
1484	#if WIN32	1710	#if _WIN32
1485	signal (w->signum, sighandler);	1711	signal (w->signum, sighandler);
1486	#else	1712	#else
1487	struct sigaction sa;	1713	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1714	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1715	sigfillset (&sa.sa_mask);
…		…
1492	#endif	1718	#endif
1493	}	1719	}
1494	}	1720	}
1495		1721
1496	void	1722	void
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1723	ev_signal_stop (EV_P_ ev_signal *w)
1498	{	1724	{
1499	ev_clear_pending (EV_A_ (W)w);	1725	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1726	if (expect_false (!ev_is_active (w)))
1501	return;	1727	return;
1502		1728
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1505		1731
1506	if (!signals [w->signum - 1].head)	1732	if (!signals [w->signum - 1].head)
1507	signal (w->signum, SIG_DFL);	1733	signal (w->signum, SIG_DFL);
1508	}	1734	}
1509		1735
1510	void	1736	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1737	ev_child_start (EV_P_ ev_child *w)
1512	{	1738	{
1513	#if EV_MULTIPLICITY	1739	#if EV_MULTIPLICITY
1514	assert (("child watchers are only supported in the default loop", loop == default_loop));	1740	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515	#endif	1741	#endif
1516	if (ev_is_active (w))	1742	if (expect_false (ev_is_active (w)))
1517	return;	1743	return;
1518		1744
1519	ev_start (EV_A_ (W)w, 1);	1745	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1746	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521	}	1747	}
1522		1748
1523	void	1749	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1750	ev_child_stop (EV_P_ ev_child *w)
1525	{	1751	{
1526	ev_clear_pending (EV_A_ (W)w);	1752	ev_clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1753	if (expect_false (!ev_is_active (w)))
1528	return;	1754	return;
1529		1755
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1756	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1757	ev_stop (EV_A_ (W)w);
1532	}	1758	}
1533		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# undef lstat
		1764	# define lstat(a,b) _stati64 (a,b)
		1765	# endif
		1766
		1767	#define DEF_STAT_INTERVAL 5.0074891
		1768	#define MIN_STAT_INTERVAL 0.1074891
		1769
		1770	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1771
		1772	#if EV_USE_INOTIFY
		1773	# define EV_INOTIFY_BUFSIZE 8192
		1774
		1775	static void noinline
		1776	infy_add (EV_P_ ev_stat *w)
		1777	{
		1778	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);
		1779
		1780	if (w->wd < 0)
		1781	{
		1782	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1783
		1784	/* monitor some parent directory for speedup hints */
		1785	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1786	{
		1787	char path [4096];
		1788	strcpy (path, w->path);
		1789
		1790	do
		1791	{
		1792	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1793	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1794
		1795	char *pend = strrchr (path, '/');
		1796
		1797	if (!pend)
		1798	break; /* whoops, no '/', complain to your admin */
		1799
		1800	*pend = 0;
		1801	w->wd = inotify_add_watch (fs_fd, path, mask);
		1802	}
		1803	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1804	}
		1805	}
		1806	else
		1807	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1808
		1809	if (w->wd >= 0)
		1810	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1811	}
		1812
		1813	static void noinline
		1814	infy_del (EV_P_ ev_stat *w)
		1815	{
		1816	int slot;
		1817	int wd = w->wd;
		1818
		1819	if (wd < 0)
		1820	return;
		1821
		1822	w->wd = -2;
		1823	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1824	wlist_del (&fs_hash [slot].head, (WL)w);
		1825
		1826	/* remove this watcher, if others are watching it, they will rearm */
		1827	inotify_rm_watch (fs_fd, wd);
		1828	}
		1829
		1830	static void noinline
		1831	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1832	{
		1833	if (slot < 0)
		1834	/* overflow, need to check for all hahs slots */
		1835	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1836	infy_wd (EV_A_ slot, wd, ev);
		1837	else
		1838	{
		1839	WL w_;
		1840
		1841	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1842	{
		1843	ev_stat *w = (ev_stat *)w_;
		1844	w_ = w_->next; /* lets us remove this watcher and all before it */
		1845
		1846	if (w->wd == wd || wd == -1)
		1847	{
		1848	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1849	{
		1850	w->wd = -1;
		1851	infy_add (EV_A_ w); /* re-add, no matter what */
		1852	}
		1853
		1854	stat_timer_cb (EV_A_ &w->timer, 0);
		1855	}
		1856	}
		1857	}
		1858	}
		1859
		1860	static void
		1861	infy_cb (EV_P_ ev_io *w, int revents)
		1862	{
		1863	char buf [EV_INOTIFY_BUFSIZE];
		1864	struct inotify_event *ev = (struct inotify_event *)buf;
		1865	int ofs;
		1866	int len = read (fs_fd, buf, sizeof (buf));
		1867
		1868	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1869	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1870	}
		1871
		1872	void inline_size
		1873	infy_init (EV_P)
		1874	{
		1875	if (fs_fd != -2)
		1876	return;
		1877
		1878	fs_fd = inotify_init ();
		1879
		1880	if (fs_fd >= 0)
		1881	{
		1882	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1883	ev_set_priority (&fs_w, EV_MAXPRI);
		1884	ev_io_start (EV_A_ &fs_w);
		1885	}
		1886	}
		1887
		1888	void inline_size
		1889	infy_fork (EV_P)
		1890	{
		1891	int slot;
		1892
		1893	if (fs_fd < 0)
		1894	return;
		1895
		1896	close (fs_fd);
		1897	fs_fd = inotify_init ();
		1898
		1899	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1900	{
		1901	WL w_ = fs_hash [slot].head;
		1902	fs_hash [slot].head = 0;
		1903
		1904	while (w_)
		1905	{
		1906	ev_stat *w = (ev_stat *)w_;
		1907	w_ = w_->next; /* lets us add this watcher */
		1908
		1909	w->wd = -1;
		1910
		1911	if (fs_fd >= 0)
		1912	infy_add (EV_A_ w); /* re-add, no matter what */
		1913	else
		1914	ev_timer_start (EV_A_ &w->timer);
		1915	}
		1916
		1917	}
		1918	}
		1919
		1920	#endif
		1921
		1922	void
		1923	ev_stat_stat (EV_P_ ev_stat *w)
		1924	{
		1925	if (lstat (w->path, &w->attr) < 0)
		1926	w->attr.st_nlink = 0;
		1927	else if (!w->attr.st_nlink)
		1928	w->attr.st_nlink = 1;
		1929	}
		1930
		1931	static void noinline
		1932	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1933	{
		1934	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1935
		1936	/* we copy this here each the time so that */
		1937	/* prev has the old value when the callback gets invoked */
		1938	w->prev = w->attr;
		1939	ev_stat_stat (EV_A_ w);
		1940
		1941	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1942	if (
		1943	w->prev.st_dev != w->attr.st_dev
		1944	|| w->prev.st_ino != w->attr.st_ino
		1945	|| w->prev.st_mode != w->attr.st_mode
		1946	|| w->prev.st_nlink != w->attr.st_nlink
		1947	|| w->prev.st_uid != w->attr.st_uid
		1948	|| w->prev.st_gid != w->attr.st_gid
		1949	|| w->prev.st_rdev != w->attr.st_rdev
		1950	|| w->prev.st_size != w->attr.st_size
		1951	|| w->prev.st_atime != w->attr.st_atime
		1952	|| w->prev.st_mtime != w->attr.st_mtime
		1953	|| w->prev.st_ctime != w->attr.st_ctime
		1954	) {
		1955	#if EV_USE_INOTIFY
		1956	infy_del (EV_A_ w);
		1957	infy_add (EV_A_ w);
		1958	ev_stat_stat (EV_A_ w); /* avoid race... */
		1959	#endif
		1960
		1961	ev_feed_event (EV_A_ w, EV_STAT);
		1962	}
		1963	}
		1964
		1965	void
		1966	ev_stat_start (EV_P_ ev_stat *w)
		1967	{
		1968	if (expect_false (ev_is_active (w)))
		1969	return;
		1970
		1971	/* since we use memcmp, we need to clear any padding data etc. */
		1972	memset (&w->prev, 0, sizeof (ev_statdata));
		1973	memset (&w->attr, 0, sizeof (ev_statdata));
		1974
		1975	ev_stat_stat (EV_A_ w);
		1976
		1977	if (w->interval < MIN_STAT_INTERVAL)
		1978	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1979
		1980	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1981	ev_set_priority (&w->timer, ev_priority (w));
		1982
		1983	#if EV_USE_INOTIFY
		1984	infy_init (EV_A);
		1985
		1986	if (fs_fd >= 0)
		1987	infy_add (EV_A_ w);
		1988	else
		1989	#endif
		1990	ev_timer_start (EV_A_ &w->timer);
		1991
		1992	ev_start (EV_A_ (W)w, 1);
		1993	}
		1994
		1995	void
		1996	ev_stat_stop (EV_P_ ev_stat *w)
		1997	{
		1998	ev_clear_pending (EV_A_ (W)w);
		1999	if (expect_false (!ev_is_active (w)))
		2000	return;
		2001
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	#endif
		2005	ev_timer_stop (EV_A_ &w->timer);
		2006
		2007	ev_stop (EV_A_ (W)w);
		2008	}
		2009	#endif
		2010
		2011	void
		2012	ev_idle_start (EV_P_ ev_idle *w)
		2013	{
		2014	if (expect_false (ev_is_active (w)))
		2015	return;
		2016
		2017	ev_start (EV_A_ (W)w, ++idlecnt);
		2018	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		2019	idles [idlecnt - 1] = w;
		2020	}
		2021
		2022	void
		2023	ev_idle_stop (EV_P_ ev_idle *w)
		2024	{
		2025	ev_clear_pending (EV_A_ (W)w);
		2026	if (expect_false (!ev_is_active (w)))
		2027	return;
		2028
		2029	{
		2030	int active = ((W)w)->active;
		2031	idles [active - 1] = idles [--idlecnt];
		2032	((W)idles [active - 1])->active = active;
		2033	}
		2034
		2035	ev_stop (EV_A_ (W)w);
		2036	}
		2037
		2038	void
		2039	ev_prepare_start (EV_P_ ev_prepare *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	ev_start (EV_A_ (W)w, ++preparecnt);
		2045	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2046	prepares [preparecnt - 1] = w;
		2047	}
		2048
		2049	void
		2050	ev_prepare_stop (EV_P_ ev_prepare *w)
		2051	{
		2052	ev_clear_pending (EV_A_ (W)w);
		2053	if (expect_false (!ev_is_active (w)))
		2054	return;
		2055
		2056	{
		2057	int active = ((W)w)->active;
		2058	prepares [active - 1] = prepares [--preparecnt];
		2059	((W)prepares [active - 1])->active = active;
		2060	}
		2061
		2062	ev_stop (EV_A_ (W)w);
		2063	}
		2064
		2065	void
		2066	ev_check_start (EV_P_ ev_check *w)
		2067	{
		2068	if (expect_false (ev_is_active (w)))
		2069	return;
		2070
		2071	ev_start (EV_A_ (W)w, ++checkcnt);
		2072	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2073	checks [checkcnt - 1] = w;
		2074	}
		2075
		2076	void
		2077	ev_check_stop (EV_P_ ev_check *w)
		2078	{
		2079	ev_clear_pending (EV_A_ (W)w);
		2080	if (expect_false (!ev_is_active (w)))
		2081	return;
		2082
		2083	{
		2084	int active = ((W)w)->active;
		2085	checks [active - 1] = checks [--checkcnt];
		2086	((W)checks [active - 1])->active = active;
		2087	}
		2088
		2089	ev_stop (EV_A_ (W)w);
		2090	}
		2091
		2092	#if EV_EMBED_ENABLE
		2093	void noinline
		2094	ev_embed_sweep (EV_P_ ev_embed *w)
		2095	{
		2096	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2097	}
		2098
		2099	static void
		2100	embed_cb (EV_P_ ev_io *io, int revents)
		2101	{
		2102	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2103
		2104	if (ev_cb (w))
		2105	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2106	else
		2107	ev_embed_sweep (loop, w);
		2108	}
		2109
		2110	void
		2111	ev_embed_start (EV_P_ ev_embed *w)
		2112	{
		2113	if (expect_false (ev_is_active (w)))
		2114	return;
		2115
		2116	{
		2117	struct ev_loop *loop = w->loop;
		2118	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2119	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2120	}
		2121
		2122	ev_set_priority (&w->io, ev_priority (w));
		2123	ev_io_start (EV_A_ &w->io);
		2124
		2125	ev_start (EV_A_ (W)w, 1);
		2126	}
		2127
		2128	void
		2129	ev_embed_stop (EV_P_ ev_embed *w)
		2130	{
		2131	ev_clear_pending (EV_A_ (W)w);
		2132	if (expect_false (!ev_is_active (w)))
		2133	return;
		2134
		2135	ev_io_stop (EV_A_ &w->io);
		2136
		2137	ev_stop (EV_A_ (W)w);
		2138	}
		2139	#endif
		2140
		2141	#if EV_FORK_ENABLE
		2142	void
		2143	ev_fork_start (EV_P_ ev_fork *w)
		2144	{
		2145	if (expect_false (ev_is_active (w)))
		2146	return;
		2147
		2148	ev_start (EV_A_ (W)w, ++forkcnt);
		2149	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2150	forks [forkcnt - 1] = w;
		2151	}
		2152
		2153	void
		2154	ev_fork_stop (EV_P_ ev_fork *w)
		2155	{
		2156	ev_clear_pending (EV_A_ (W)w);
		2157	if (expect_false (!ev_is_active (w)))
		2158	return;
		2159
		2160	{
		2161	int active = ((W)w)->active;
		2162	forks [active - 1] = forks [--forkcnt];
		2163	((W)forks [active - 1])->active = active;
		2164	}
		2165
		2166	ev_stop (EV_A_ (W)w);
		2167	}
		2168	#endif
		2169
1534	/*****************************************************************************/	2170	/*****************************************************************************/
1535		2171
1536	struct ev_once	2172	struct ev_once
1537	{	2173	{
1538	struct ev_io io;	2174	ev_io io;
1539	struct ev_timer to;	2175	ev_timer to;
1540	void (*cb)(int revents, void *arg);	2176	void (*cb)(int revents, void *arg);
1541	void *arg;	2177	void *arg;
1542	};	2178	};
1543		2179
1544	static void	2180	static void
…		…
1553		2189
1554	cb (revents, arg);	2190	cb (revents, arg);
1555	}	2191	}
1556		2192
1557	static void	2193	static void
1558	once_cb_io (EV_P_ struct ev_io *w, int revents)	2194	once_cb_io (EV_P_ ev_io *w, int revents)
1559	{	2195	{
1560	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2196	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1561	}	2197	}
1562		2198
1563	static void	2199	static void
1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2200	once_cb_to (EV_P_ ev_timer *w, int revents)
1565	{	2201	{
1566	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2202	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1567	}	2203	}
1568		2204
1569	void	2205	void
1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2206	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1571	{	2207	{
1572	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2208	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1573		2209
1574	if (!once)	2210	if (expect_false (!once))
		2211	{
1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2212	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576	else	2213	return;
1577	{	2214	}
		2215
1578	once->cb = cb;	2216	once->cb = cb;
1579	once->arg = arg;	2217	once->arg = arg;
1580		2218
1581	ev_init (&once->io, once_cb_io);	2219	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	2220	if (fd >= 0)
1583	{	2221	{
1584	ev_io_set (&once->io, fd, events);	2222	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	2223	ev_io_start (EV_A_ &once->io);
1586	}	2224	}
1587		2225
1588	ev_init (&once->to, once_cb_to);	2226	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	2227	if (timeout >= 0.)
1590	{	2228	{
1591	ev_timer_set (&once->to, timeout, 0.);	2229	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	2230	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	2231	}
1595	}	2232	}
1596		2233
		2234	#ifdef __cplusplus
		2235	}
		2236	#endif
		2237

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