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Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.167 by root, Sat Dec 8 04:02:31 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>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		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
121	/**/	219	/**/
122		220
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
150	#if WIN32	257	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	258	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	259	#endif
155		260
156	/*****************************************************************************/	261	/*****************************************************************************/
157		262
158	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
159		264
		265	void
160	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
161	{	267	{
162	syserr_cb = cb;	268	syserr_cb = cb;
163	}	269	}
164		270
165	static void	271	static void noinline
166	syserr (const char *msg)	272	syserr (const char *msg)
167	{	273	{
168	if (!msg)	274	if (!msg)
169	msg = "(libev) system error";	275	msg = "(libev) system error";
170		276
…		…
177	}	283	}
178	}	284	}
179		285
180	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
181		287
		288	void
182	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
183	{	290	{
184	alloc = cb;	291	alloc = cb;
185	}	292	}
186		293
187	static void *	294	inline_speed void *
188	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
189	{	296	{
190	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
191		298
192	if (!ptr && size)	299	if (!ptr && size)
…		…
206	typedef struct	313	typedef struct
207	{	314	{
208	WL head;	315	WL head;
209	unsigned char events;	316	unsigned char events;
210	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
211	} ANFD;	321	} ANFD;
212		322
213	typedef struct	323	typedef struct
214	{	324	{
215	W w;	325	W w;
216	int events;	326	int events;
217	} ANPENDING;	327	} ANPENDING;
218		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
219	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
220		337
221	struct ev_loop	338	struct ev_loop
222	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	343	#include "ev_vars.h"
225	};
226	# undef VAR	344	#undef VAR
		345	};
227	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
228		350
229	#else	351	#else
230		352
		353	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	355	#include "ev_vars.h"
233	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
234		359
235	#endif	360	#endif
236		361
237	/*****************************************************************************/	362	/*****************************************************************************/
238		363
239	inline ev_tstamp	364	ev_tstamp
240	ev_time (void)	365	ev_time (void)
241	{	366	{
242	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
243	struct timespec ts;	368	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
248	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
249	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
250	#endif	375	#endif
251	}	376	}
252		377
253	inline ev_tstamp	378	ev_tstamp inline_size
254	get_clock (void)	379	get_clock (void)
255	{	380	{
256	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
257	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
258	{	383	{
…		…
263	#endif	388	#endif
264		389
265	return ev_time ();	390	return ev_time ();
266	}	391	}
267		392
		393	#if EV_MULTIPLICITY
268	ev_tstamp	394	ev_tstamp
269	ev_now (EV_P)	395	ev_now (EV_P)
270	{	396	{
271	return rt_now;	397	return ev_rt_now;
272	}	398	}
		399	#endif
273		400
274	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
275		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	}
		428
276	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
278	{ \	431	{ \
279	int newcnt = cur; \	432	int ocur_ = (cur); \
280	do \	433	(base) = (type *)array_realloc \
281	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
282	newcnt = array_roundsize (base, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
283	} \
284	while ((cnt) > newcnt); \
285	\
286	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
287	init (base + cur, newcnt - cur); \
288	cur = newcnt; \
289	}	436	}
290		437
		438	#if 0
291	#define array_slim(stem) \	439	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	441	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
297	}	445	}
		446	#endif
298		447
299	#define array_free(stem, idx) \	448	#define array_free(stem, idx) \
300	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;
301		450
302	/*****************************************************************************/	451	/*****************************************************************************/
303		452
304	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
305	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
306	{	483	{
307	while (count--)	484	while (count--)
308	{	485	{
309	base->head = 0;	486	base->head = 0;
…		…
312		489
313	++base;	490	++base;
314	}	491	}
315	}	492	}
316		493
317	static void	494	void inline_speed
318	event (EV_P_ W w, int events)
319	{
320	if (w->pending)
321	{
322	pendings [ABSPRI (w)][w->pending - 1].events |= events;
323	return;
324	}
325
326	w->pending = ++pendingcnt [ABSPRI (w)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
328	pendings [ABSPRI (w)][w->pending - 1].w = w;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;
330	}
331
332	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{
335	int i;
336
337	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);
339	}
340
341	static void
342	fd_event (EV_P_ int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
343	{	496	{
344	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	498	ev_io *w;
346		499
347	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)
348	{	501	{
349	int ev = w->events & events;	502	int ev = w->events & revents;
350		503
351	if (ev)	504	if (ev)
352	event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
353	}	506	}
354	}	507	}
355		508
356	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
357		514
358	static void	515	void inline_size
359	fd_reify (EV_P)	516	fd_reify (EV_P)
360	{	517	{
361	int i;	518	int i;
362		519
363	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
364	{	521	{
365	int fd = fdchanges [i];	522	int fd = fdchanges [i];
366	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
367	struct ev_io *w;	524	ev_io *w;
368		525
369	int events = 0;	526	int events = 0;
370		527
371	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)
372	events |= w->events;	529	events |= w->events;
373		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
374	anfd->reify = 0;	540	anfd->reify = 0;
375		541
376	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	543	anfd->events = events;
378	}	544	}
379		545
380	fdchangecnt = 0;	546	fdchangecnt = 0;
381	}	547	}
382		548
383	static void	549	void inline_size
384	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
385	{	551	{
386	if (anfds [fd].reify)	552	if (expect_false (anfds [fd].reify))
387	return;	553	return;
388		554
389	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
390		556
391	++fdchangecnt;	557	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
394	}	560	}
395		561
396	static void	562	void inline_speed
397	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
398	{	564	{
399	struct ev_io *w;	565	ev_io *w;
400		566
401	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
402	{	568	{
403	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
404	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);
405	}	571	}
		572	}
		573
		574	int inline_size
		575	fd_valid (int fd)
		576	{
		577	#ifdef _WIN32
		578	return _get_osfhandle (fd) != -1;
		579	#else
		580	return fcntl (fd, F_GETFD) != -1;
		581	#endif
406	}	582	}
407		583
408	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
409	static void	585	static void noinline
410	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
411	{	587	{
412	int fd;	588	int fd;
413		589
414	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	591	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
418	}	594	}
419		595
420	/* 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 */
421	static void	597	static void noinline
422	fd_enomem (EV_P)	598	fd_enomem (EV_P)
423	{	599	{
424	int fd;	600	int fd;
425		601
426	for (fd = anfdmax; fd--; )	602	for (fd = anfdmax; fd--; )
…		…
429	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
430	return;	606	return;
431	}	607	}
432	}	608	}
433		609
434	/* 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 */
435	static void	611	static void noinline
436	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
437	{	613	{
438	int fd;	614	int fd;
439		615
440	/* this should be highly optimised to not do anything but set a flag */
441	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
442	if (anfds [fd].events)	617	if (anfds [fd].events)
443	{	618	{
444	anfds [fd].events = 0;	619	anfds [fd].events = 0;
445	fd_change (EV_A_ fd);	620	fd_change (EV_A_ fd);
446	}	621	}
447	}	622	}
448		623
449	/*****************************************************************************/	624	/*****************************************************************************/
450		625
451	static void	626	void inline_speed
452	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
453	{	628	{
454	WT w = heap [k];	629	WT w = heap [k];
455		630
456	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
…		…
463	heap [k] = w;	638	heap [k] = w;
464	((W)heap [k])->active = k + 1;	639	((W)heap [k])->active = k + 1;
465		640
466	}	641	}
467		642
468	static void	643	void inline_speed
469	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
470	{	645	{
471	WT w = heap [k];	646	WT w = heap [k];
472		647
473	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
487		662
488	heap [k] = w;	663	heap [k] = w;
489	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
490	}	665	}
491		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
		672	}
		673
492	/*****************************************************************************/	674	/*****************************************************************************/
493		675
494	typedef struct	676	typedef struct
495	{	677	{
496	WL head;	678	WL head;
…		…
500	static ANSIG *signals;	682	static ANSIG *signals;
501	static int signalmax;	683	static int signalmax;
502		684
503	static int sigpipe [2];	685	static int sigpipe [2];
504	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
505	static struct ev_io sigev;	687	static ev_io sigev;
506		688
507	static void	689	void inline_size
508	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
509	{	691	{
510	while (count--)	692	while (count--)
511	{	693	{
512	base->head = 0;	694	base->head = 0;
…		…
517	}	699	}
518		700
519	static void	701	static void
520	sighandler (int signum)	702	sighandler (int signum)
521	{	703	{
522	#if WIN32	704	#if _WIN32
523	signal (signum, sighandler);	705	signal (signum, sighandler);
524	#endif	706	#endif
525		707
526	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
527		709
…		…
532	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	715	errno = old_errno;
534	}	716	}
535	}	717	}
536		718
		719	void noinline
		720	ev_feed_signal_event (EV_P_ int signum)
		721	{
		722	WL w;
		723
		724	#if EV_MULTIPLICITY
		725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		726	#endif
		727
		728	--signum;
		729
		730	if (signum < 0 || signum >= signalmax)
		731	return;
		732
		733	signals [signum].gotsig = 0;
		734
		735	for (w = signals [signum].head; w; w = w->next)
		736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		737	}
		738
537	static void	739	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
539	{	741	{
540	WL w;
541	int signum;	742	int signum;
542		743
543	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	745	gotsig = 0;
545		746
546	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
548	{	749	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;
550
551	for (w = signals [signum].head; w; w = w->next)
552	event (EV_A_ (W)w, EV_SIGNAL);
553	}
554	}	750	}
555		751
556	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
557	siginit (EV_P)	765	siginit (EV_P)
558	{	766	{
559	#ifndef WIN32	767	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		769
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	773	}
572		774
573	/*****************************************************************************/	775	/*****************************************************************************/
574		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
575	#ifndef WIN32	779	#ifndef _WIN32
576		780
577	static struct ev_child *childs [PID_HASHSIZE];
578	static struct ev_signal childev;	781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
		790	{
		791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		792	w->rpid = pid;
		793	w->rstatus = status;
		794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		795	}
		796	}
579		797
580	#ifndef WCONTINUED	798	#ifndef WCONTINUED
581	# define WCONTINUED 0	799	# define WCONTINUED 0
582	#endif	800	#endif
583		801
584	static void	802	static void
585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
586	{
587	struct ev_child *w;
588
589	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
590	if (w->pid == pid || !w->pid)
591	{
592	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
593	w->rpid = pid;
594	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);
596	}
597	}
598
599	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
601	{	804	{
602	int pid, status;	805	int pid, status;
603		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
604	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
605	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
606	/* 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 */
607	event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		817
609	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
610	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 */
611	}
612	}	821	}
613		822
614	#endif	823	#endif
615		824
616	/*****************************************************************************/	825	/*****************************************************************************/
617		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
618	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
619	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
620	#endif	832	#endif
621	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
622	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
639	{	851	{
640	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
641	}	853	}
642		854
643	/* 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 */
644	static int	856	int inline_size
645	enable_secure (void)	857	enable_secure (void)
646	{	858	{
647	#ifdef WIN32	859	#ifdef _WIN32
648	return 0;	860	return 0;
649	#else	861	#else
650	return getuid () != geteuid ()	862	return getuid () != geteuid ()
651	|| getgid () != getegid ();	863	|| getgid () != getegid ();
652	#endif	864	#endif
653	}	865	}
654		866
655	int	867	unsigned int
656	ev_method (EV_P)	868	ev_supported_backends (void)
657	{	869	{
658	return method;	870	unsigned int flags = 0;
659	}
660		871
661	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
662	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)
663	{	883	{
664	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)
665	{	923	{
666	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
667	{	925	{
668	struct timespec ts;	926	struct timespec ts;
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	928	have_monotonic = 1;
671	}	929	}
672	#endif	930	#endif
673		931
674	rt_now = ev_time ();	932	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	933	mn_now = get_clock ();
676	now_floor = mn_now;	934	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
678		936
679	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
680	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"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else
683	methods = EVMETHOD_ANY;
684		947
685	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
686	#if EV_USE_WIN32	953	#if EV_USE_INOTIFY
687	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);
688	#endif	959	#endif
689	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
691	#endif	962	#endif
692	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
694	#endif	965	#endif
695	#if EV_USE_POLL	966	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
697	#endif	968	#endif
698	#if EV_USE_SELECT	969	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
700	#endif	971	#endif
701		972
702	ev_watcher_init (&sigev, sigcb);	973	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	974	ev_set_priority (&sigev, EV_MAXPRI);
704	}	975	}
705	}	976	}
706		977
707	void	978	static void noinline
708	loop_destroy (EV_P)	979	loop_destroy (EV_P)
709	{	980	{
710	int i;	981	int i;
711		982
712	#if EV_USE_WIN32	983	#if EV_USE_INOTIFY
713	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);
714	#endif	993	#endif
715	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
717	#endif	996	#endif
718	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
720	#endif	999	#endif
721	#if EV_USE_POLL	1000	#if EV_USE_POLL
722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
723	#endif	1002	#endif
724	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
726	#endif	1005	#endif
727		1006
728	for (i = NUMPRI; i--; )	1007	for (i = NUMPRI; i--; )
		1008	{
729	array_free (pending, [i]);	1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
730		1014
		1015	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	1016	array_free (fdchange, EMPTY);
732	array_free (timer, );	1017	array_free (timer, EMPTY);
		1018	#if EV_PERIODIC_ENABLE
733	array_free (periodic, );	1019	array_free (periodic, EMPTY);
734	array_free (idle, );	1020	#endif
735	array_free (prepare, );	1021	array_free (prepare, EMPTY);
736	array_free (check, );	1022	array_free (check, EMPTY);
737		1023
738	method = 0;	1024	backend = 0;
739	}	1025	}
740		1026
741	static void	1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
742	loop_fork (EV_P)	1030	loop_fork (EV_P)
743	{	1031	{
		1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
744	#if EV_USE_EPOLL	1038	#if EV_USE_EPOLL
745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
746	#endif	1040	#endif
747	#if EV_USE_KQUEUE	1041	#if EV_USE_INOTIFY
748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1042	infy_fork (EV_A);
749	#endif	1043	#endif
750		1044
751	if (ev_is_active (&sigev))	1045	if (ev_is_active (&sigev))
752	{	1046	{
753	/* default loop */	1047	/* default loop */
…		…
766	postfork = 0;	1060	postfork = 0;
767	}	1061	}
768		1062
769	#if EV_MULTIPLICITY	1063	#if EV_MULTIPLICITY
770	struct ev_loop *	1064	struct ev_loop *
771	ev_loop_new (int methods)	1065	ev_loop_new (unsigned int flags)
772	{	1066	{
773	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
774		1068
775	memset (loop, 0, sizeof (struct ev_loop));	1069	memset (loop, 0, sizeof (struct ev_loop));
776		1070
777	loop_init (EV_A_ methods);	1071	loop_init (EV_A_ flags);
778		1072
779	if (ev_method (EV_A))	1073	if (ev_backend (EV_A))
780	return loop;	1074	return loop;
781		1075
782	return 0;	1076	return 0;
783	}	1077	}
784		1078
…		…
796	}	1090	}
797		1091
798	#endif	1092	#endif
799		1093
800	#if EV_MULTIPLICITY	1094	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
805	#else	1097	#else
806	static int default_loop;
807
808	int	1098	int
		1099	ev_default_loop (unsigned int flags)
809	#endif	1100	#endif
810	ev_default_loop (int methods)
811	{	1101	{
812	if (sigpipe [0] == sigpipe [1])	1102	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	1103	if (pipe (sigpipe))
814	return 0;	1104	return 0;
815		1105
816	if (!default_loop)	1106	if (!ev_default_loop_ptr)
817	{	1107	{
818	#if EV_MULTIPLICITY	1108	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	1110	#else
821	default_loop = 1;	1111	ev_default_loop_ptr = 1;
822	#endif	1112	#endif
823		1113
824	loop_init (EV_A_ methods);	1114	loop_init (EV_A_ flags);
825		1115
826	if (ev_method (EV_A))	1116	if (ev_backend (EV_A))
827	{	1117	{
828	siginit (EV_A);	1118	siginit (EV_A);
829		1119
830	#ifndef WIN32	1120	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	1123	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	1125	#endif
836	}	1126	}
837	else	1127	else
838	default_loop = 0;	1128	ev_default_loop_ptr = 0;
839	}	1129	}
840		1130
841	return default_loop;	1131	return ev_default_loop_ptr;
842	}	1132	}
843		1133
844	void	1134	void
845	ev_default_destroy (void)	1135	ev_default_destroy (void)
846	{	1136	{
847	#if EV_MULTIPLICITY	1137	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1138	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1139	#endif
850		1140
		1141	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	1142	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	1143	ev_signal_stop (EV_A_ &childev);
		1144	#endif
853		1145
854	ev_ref (EV_A); /* signal watcher */	1146	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	1147	ev_io_stop (EV_A_ &sigev);
856		1148
857	close (sigpipe [0]); sigpipe [0] = 0;	1149	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		1154
863	void	1155	void
864	ev_default_fork (void)	1156	ev_default_fork (void)
865	{	1157	{
866	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	1160	#endif
869		1161
870	if (method)	1162	if (backend)
871	postfork = 1;	1163	postfork = 1;
872	}	1164	}
873		1165
874	/*****************************************************************************/	1166	/*****************************************************************************/
875		1167
876	static void	1168	void inline_speed
877	call_pending (EV_P)	1169	call_pending (EV_P)
878	{	1170	{
879	int pri;	1171	int pri;
880		1172
881	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
882	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
883	{	1175	{
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		1177
886	if (p->w)	1178	if (expect_true (p->w))
887	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
888	p->w->pending = 0;	1182	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
890	}	1184	}
891	}	1185	}
892	}	1186	}
893		1187
894	static void	1188	void inline_size
895	timers_reify (EV_P)	1189	timers_reify (EV_P)
896	{	1190	{
897	while (timercnt && ((WT)timers [0])->at <= mn_now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
898	{	1192	{
899	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
900		1194
901	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
902		1196
903	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
904	if (w->repeat)	1198	if (w->repeat)
905	{	1199	{
906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1201
907	((WT)w)->at = mn_now + w->repeat;	1202	((WT)w)->at += w->repeat;
		1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
908	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
909	}	1207	}
910	else	1208	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1210
913	event (EV_A_ (W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1212	}
915	}	1213	}
916		1214
917	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
918	periodics_reify (EV_P)	1217	periodics_reify (EV_P)
919	{	1218	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1220	{
922	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
923		1222
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
925		1224
926	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
927	if (w->interval)	1226	if (w->reschedule_cb)
928	{	1227	{
		1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1230	downheap ((WT *)periodics, periodiccnt, 0);
		1231	}
		1232	else if (w->interval)
		1233	{
929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
931	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1237	}
933	else	1238	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1240
936	event (EV_A_ (W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1242	}
938	}	1243	}
939		1244
940	static void	1245	static void noinline
941	periodics_reschedule (EV_P)	1246	periodics_reschedule (EV_P)
942	{	1247	{
943	int i;	1248	int i;
944		1249
945	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
947	{	1252	{
948	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
949		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1257	else if (w->interval)
		1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1259	}
		1260
		1261	/* now rebuild the heap */
		1262	for (i = periodiccnt >> 1; i--; )
		1263	downheap ((WT *)periodics, periodiccnt, i);
		1264	}
		1265	#endif
		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
951	{	1276	{
952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
953		1279
954	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
955	{	1281	{
956	ev_periodic_stop (EV_A_ w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
957	ev_periodic_start (EV_A_ w);	1283	break;
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}	1284	}
961	}	1285	}
962	}	1286	}
963	}	1287	}
		1288	#endif
964		1289
965	inline int	1290	int inline_size
966	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
967	{	1292	{
968	mn_now = get_clock ();	1293	mn_now = get_clock ();
969		1294
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1296	{
972	rt_now = rtmn_diff + mn_now;	1297	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1298	return 0;
974	}	1299	}
975	else	1300	else
976	{	1301	{
977	now_floor = mn_now;	1302	now_floor = mn_now;
978	rt_now = ev_time ();	1303	ev_rt_now = ev_time ();
979	return 1;	1304	return 1;
980	}	1305	}
981	}	1306	}
982		1307
983	static void	1308	void inline_size
984	time_update (EV_P)	1309	time_update (EV_P)
985	{	1310	{
986	int i;	1311	int i;
987		1312
988	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
…		…
990	{	1315	{
991	if (time_update_monotonic (EV_A))	1316	if (time_update_monotonic (EV_A))
992	{	1317	{
993	ev_tstamp odiff = rtmn_diff;	1318	ev_tstamp odiff = rtmn_diff;
994		1319
995	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
996	{	1329	{
997	rtmn_diff = rt_now - mn_now;	1330	rtmn_diff = ev_rt_now - mn_now;
998		1331
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1333	return; /* all is well */
1001		1334
1002	rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1336	mn_now = get_clock ();
1004	now_floor = mn_now;	1337	now_floor = mn_now;
1005	}	1338	}
1006		1339
		1340	# if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1341	periodics_reschedule (EV_A);
		1342	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1345	}
1011	}	1346	}
1012	else	1347	else
1013	#endif	1348	#endif
1014	{	1349	{
1015	rt_now = ev_time ();	1350	ev_rt_now = ev_time ();
1016		1351
1017	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1018	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
1019	periodics_reschedule (EV_A);	1355	periodics_reschedule (EV_A);
		1356	#endif
1020		1357
1021	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
1022	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1361	}
1025		1362
1026	mn_now = rt_now;	1363	mn_now = ev_rt_now;
1027	}	1364	}
1028	}	1365	}
1029		1366
1030	void	1367	void
1031	ev_ref (EV_P)	1368	ev_ref (EV_P)
…		…
1042	static int loop_done;	1379	static int loop_done;
1043		1380
1044	void	1381	void
1045	ev_loop (EV_P_ int flags)	1382	ev_loop (EV_P_ int flags)
1046	{	1383	{
1047	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1049		1389
1050	do	1390	do
1051	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
1052	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
1054	{	1413	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1056	call_pending (EV_A);	1415	call_pending (EV_A);
1057	}	1416	}
1058		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
1059	/* we might have forked, so reify kernel state if necessary */	1421	/* we might have forked, so reify kernel state if necessary */
1060	if (expect_false (postfork))	1422	if (expect_false (postfork))
1061	loop_fork (EV_A);	1423	loop_fork (EV_A);
1062		1424
1063	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1426	fd_reify (EV_A);
1065		1427
1066	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
1067		1431
1068	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1069	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
		1434	else
		1435	{
		1436	/* update time to cancel out callback processing overhead */
1070	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1439	time_update_monotonic (EV_A);
1073	else	1440	else
1074	#endif	1441	#endif
1075	{	1442	{
1076	rt_now = ev_time ();	1443	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1444	mn_now = ev_rt_now;
1078	}	1445	}
1079		1446
1080	if (flags & EVLOOP_NONBLOCK || idlecnt)
1081	block = 0.;
1082	else
1083	{
1084	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
1085		1448
1086	if (timercnt)	1449	if (timercnt)
1087	{	1450	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1089	if (block > to) block = to;	1452	if (block > to) block = to;
1090	}	1453	}
1091		1454
		1455	#if EV_PERIODIC_ENABLE
1092	if (periodiccnt)	1456	if (periodiccnt)
1093	{	1457	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1095	if (block > to) block = to;	1459	if (block > to) block = to;
1096	}	1460	}
		1461	#endif
1097		1462
1098	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
1099	}	1464	}
1100		1465
		1466	++loop_count;
1101	method_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
		1468	}
1102		1469
1103	/* update rt_now, do magic */	1470	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1471	time_update (EV_A);
1105		1472
1106	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
1108	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
1109		1478
		1479	#if EV_IDLE_ENABLE
1110	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
1111	if (!pendingcnt)	1481	idle_reify (EV_A);
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
1113		1483
1114	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1485	if (expect_false (checkcnt))
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1487
1118	call_pending (EV_A);	1488	call_pending (EV_A);
		1489
1119	}	1490	}
1120	while (activecnt && !loop_done);	1491	while (expect_true (activecnt && !loop_done));
1121		1492
1122	if (loop_done != 2)	1493	if (loop_done == EVUNLOOP_ONE)
1123	loop_done = 0;	1494	loop_done = EVUNLOOP_CANCEL;
1124	}	1495	}
1125		1496
1126	void	1497	void
1127	ev_unloop (EV_P_ int how)	1498	ev_unloop (EV_P_ int how)
1128	{	1499	{
1129	loop_done = how;	1500	loop_done = how;
1130	}	1501	}
1131		1502
1132	/*****************************************************************************/	1503	/*****************************************************************************/
1133		1504
1134	inline void	1505	void inline_size
1135	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
1136	{	1507	{
1137	elem->next = *head;	1508	elem->next = *head;
1138	*head = elem;	1509	*head = elem;
1139	}	1510	}
1140		1511
1141	inline void	1512	void inline_size
1142	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
1143	{	1514	{
1144	while (*head)	1515	while (*head)
1145	{	1516	{
1146	if (*head == elem)	1517	if (*head == elem)
…		…
1151		1522
1152	head = &(*head)->next;	1523	head = &(*head)->next;
1153	}	1524	}
1154	}	1525	}
1155		1526
1156	inline void	1527	void inline_speed
1157	ev_clear_pending (EV_P_ W w)	1528	clear_pending (EV_P_ W w)
1158	{	1529	{
1159	if (w->pending)	1530	if (w->pending)
1160	{	1531	{
1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1162	w->pending = 0;	1533	w->pending = 0;
1163	}	1534	}
1164	}	1535	}
1165		1536
1166	inline void	1537	int
		1538	ev_clear_pending (EV_P_ void *w)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (!pending)
		1544	return 0;
		1545
		1546	w_->pending = 0;
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	p->w = 0;
		1549
		1550	return p->events;
		1551	}
		1552
		1553	void inline_size
		1554	pri_adjust (EV_P_ W w)
		1555	{
		1556	int pri = w->priority;
		1557	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1558	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1559	w->priority = pri;
		1560	}
		1561
		1562	void inline_speed
1167	ev_start (EV_P_ W w, int active)	1563	ev_start (EV_P_ W w, int active)
1168	{	1564	{
1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1565	pri_adjust (EV_A_ w);
1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1171
1172	w->active = active;	1566	w->active = active;
1173	ev_ref (EV_A);	1567	ev_ref (EV_A);
1174	}	1568	}
1175		1569
1176	inline void	1570	void inline_size
1177	ev_stop (EV_P_ W w)	1571	ev_stop (EV_P_ W w)
1178	{	1572	{
1179	ev_unref (EV_A);	1573	ev_unref (EV_A);
1180	w->active = 0;	1574	w->active = 0;
1181	}	1575	}
1182		1576
1183	/*****************************************************************************/	1577	/*****************************************************************************/
1184		1578
1185	void	1579	void
1186	ev_io_start (EV_P_ struct ev_io *w)	1580	ev_io_start (EV_P_ ev_io *w)
1187	{	1581	{
1188	int fd = w->fd;	1582	int fd = w->fd;
1189		1583
1190	if (ev_is_active (w))	1584	if (expect_false (ev_is_active (w)))
1191	return;	1585	return;
1192		1586
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1587	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1588
1195	ev_start (EV_A_ (W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1590	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1591	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1592
1199	fd_change (EV_A_ fd);	1593	fd_change (EV_A_ fd);
1200	}	1594	}
1201		1595
1202	void	1596	void
1203	ev_io_stop (EV_P_ struct ev_io *w)	1597	ev_io_stop (EV_P_ ev_io *w)
1204	{	1598	{
1205	ev_clear_pending (EV_A_ (W)w);	1599	clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1207	return;	1601	return;
		1602
		1603	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1208		1604
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1605	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1606	ev_stop (EV_A_ (W)w);
1211		1607
1212	fd_change (EV_A_ w->fd);	1608	fd_change (EV_A_ w->fd);
1213	}	1609	}
1214		1610
1215	void	1611	void
1216	ev_timer_start (EV_P_ struct ev_timer *w)	1612	ev_timer_start (EV_P_ ev_timer *w)
1217	{	1613	{
1218	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1219	return;	1615	return;
1220		1616
1221	((WT)w)->at += mn_now;	1617	((WT)w)->at += mn_now;
1222		1618
1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1619	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1224		1620
1225	ev_start (EV_A_ (W)w, ++timercnt);	1621	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1622	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1623	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1624	upheap ((WT *)timers, timercnt - 1);
1229		1625
		1626	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1627	}
		1628
		1629	void
		1630	ev_timer_stop (EV_P_ ev_timer *w)
		1631	{
		1632	clear_pending (EV_A_ (W)w);
		1633	if (expect_false (!ev_is_active (w)))
		1634	return;
		1635
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1636	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}
1232		1637
1233	void	1638	{
1234	ev_timer_stop (EV_P_ struct ev_timer *w)	1639	int active = ((W)w)->active;
1235	{
1236	ev_clear_pending (EV_A_ (W)w);
1237	if (!ev_is_active (w))
1238	return;
1239		1640
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1641	if (expect_true (--active < --timercnt))
1241
1242	if (((W)w)->active < timercnt--)
1243	{	1642	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1643	timers [active] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1644	adjustheap ((WT *)timers, timercnt, active);
1246	}	1645	}
		1646	}
1247		1647
1248	((WT)w)->at = w->repeat;	1648	((WT)w)->at -= mn_now;
1249		1649
1250	ev_stop (EV_A_ (W)w);	1650	ev_stop (EV_A_ (W)w);
1251	}	1651	}
1252		1652
1253	void	1653	void
1254	ev_timer_again (EV_P_ struct ev_timer *w)	1654	ev_timer_again (EV_P_ ev_timer *w)
1255	{	1655	{
1256	if (ev_is_active (w))	1656	if (ev_is_active (w))
1257	{	1657	{
1258	if (w->repeat)	1658	if (w->repeat)
1259	{	1659	{
1260	((WT)w)->at = mn_now + w->repeat;	1660	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1661	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1662	}
1263	else	1663	else
1264	ev_timer_stop (EV_A_ w);	1664	ev_timer_stop (EV_A_ w);
1265	}	1665	}
1266	else if (w->repeat)	1666	else if (w->repeat)
		1667	{
		1668	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1669	ev_timer_start (EV_A_ w);
		1670	}
1268	}	1671	}
1269		1672
		1673	#if EV_PERIODIC_ENABLE
1270	void	1674	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1675	ev_periodic_start (EV_P_ ev_periodic *w)
1272	{	1676	{
1273	if (ev_is_active (w))	1677	if (expect_false (ev_is_active (w)))
1274	return;	1678	return;
1275		1679
		1680	if (w->reschedule_cb)
		1681	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1682	else if (w->interval)
		1683	{
1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1684	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1277
1278	/* this formula differs from the one in periodic_reify because we do not always round up */	1685	/* this formula differs from the one in periodic_reify because we do not always round up */
1279	if (w->interval)
1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1686	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1687	}
1281		1688
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1689	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1690	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1691	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1692	upheap ((WT *)periodics, periodiccnt - 1);
1286		1693
		1694	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1695	}
		1696
		1697	void
		1698	ev_periodic_stop (EV_P_ ev_periodic *w)
		1699	{
		1700	clear_pending (EV_A_ (W)w);
		1701	if (expect_false (!ev_is_active (w)))
		1702	return;
		1703
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1704	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}
1289		1705
1290	void	1706	{
1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1707	int active = ((W)w)->active;
1292	{
1293	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))
1295	return;
1296		1708
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	if (expect_true (--active < --periodiccnt))
1298
1299	if (((W)w)->active < periodiccnt--)
1300	{	1710	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1711	periodics [active] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1712	adjustheap ((WT *)periodics, periodiccnt, active);
1303	}	1713	}
		1714	}
1304		1715
1305	ev_stop (EV_A_ (W)w);	1716	ev_stop (EV_A_ (W)w);
1306	}	1717	}
1307		1718
1308	void	1719	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1720	ev_periodic_again (EV_P_ ev_periodic *w)
1310	{	1721	{
1311	if (ev_is_active (w))	1722	/* TODO: use adjustheap and recalculation */
1312	return;
1313
1314	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );
1316	idles [idlecnt - 1] = w;
1317	}
1318
1319	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)
1321	{
1322	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))
1324	return;
1325
1326	idles [((W)w)->active - 1] = idles [--idlecnt];
1327	ev_stop (EV_A_ (W)w);	1723	ev_periodic_stop (EV_A_ w);
		1724	ev_periodic_start (EV_A_ w);
1328	}	1725	}
1329		1726	#endif
1330	void
1331	ev_prepare_start (EV_P_ struct ev_prepare *w)
1332	{
1333	if (ev_is_active (w))
1334	return;
1335
1336	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );
1338	prepares [preparecnt - 1] = w;
1339	}
1340
1341	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1343	{
1344	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))
1346	return;
1347
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1349	ev_stop (EV_A_ (W)w);
1350	}
1351
1352	void
1353	ev_check_start (EV_P_ struct ev_check *w)
1354	{
1355	if (ev_is_active (w))
1356	return;
1357
1358	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );
1360	checks [checkcnt - 1] = w;
1361	}
1362
1363	void
1364	ev_check_stop (EV_P_ struct ev_check *w)
1365	{
1366	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))
1368	return;
1369
1370	checks [((W)w)->active - 1] = checks [--checkcnt];
1371	ev_stop (EV_A_ (W)w);
1372	}
1373		1727
1374	#ifndef SA_RESTART	1728	#ifndef SA_RESTART
1375	# define SA_RESTART 0	1729	# define SA_RESTART 0
1376	#endif	1730	#endif
1377		1731
1378	void	1732	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1733	ev_signal_start (EV_P_ ev_signal *w)
1380	{	1734	{
1381	#if EV_MULTIPLICITY	1735	#if EV_MULTIPLICITY
1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1736	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1383	#endif	1737	#endif
1384	if (ev_is_active (w))	1738	if (expect_false (ev_is_active (w)))
1385	return;	1739	return;
1386		1740
1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1741	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1388		1742
1389	ev_start (EV_A_ (W)w, 1);	1743	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1744	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1745	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1746
1393	if (!((WL)w)->next)	1747	if (!((WL)w)->next)
1394	{	1748	{
1395	#if WIN32	1749	#if _WIN32
1396	signal (w->signum, sighandler);	1750	signal (w->signum, sighandler);
1397	#else	1751	#else
1398	struct sigaction sa;	1752	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1753	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1754	sigfillset (&sa.sa_mask);
…		…
1403	#endif	1757	#endif
1404	}	1758	}
1405	}	1759	}
1406		1760
1407	void	1761	void
1408	ev_signal_stop (EV_P_ struct ev_signal *w)	1762	ev_signal_stop (EV_P_ ev_signal *w)
1409	{	1763	{
1410	ev_clear_pending (EV_A_ (W)w);	1764	clear_pending (EV_A_ (W)w);
1411	if (!ev_is_active (w))	1765	if (expect_false (!ev_is_active (w)))
1412	return;	1766	return;
1413		1767
1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1768	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1415	ev_stop (EV_A_ (W)w);	1769	ev_stop (EV_A_ (W)w);
1416		1770
1417	if (!signals [w->signum - 1].head)	1771	if (!signals [w->signum - 1].head)
1418	signal (w->signum, SIG_DFL);	1772	signal (w->signum, SIG_DFL);
1419	}	1773	}
1420		1774
1421	void	1775	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1776	ev_child_start (EV_P_ ev_child *w)
1423	{	1777	{
1424	#if EV_MULTIPLICITY	1778	#if EV_MULTIPLICITY
1425	assert (("child watchers are only supported in the default loop", loop == default_loop));	1779	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1426	#endif	1780	#endif
1427	if (ev_is_active (w))	1781	if (expect_false (ev_is_active (w)))
1428	return;	1782	return;
1429		1783
1430	ev_start (EV_A_ (W)w, 1);	1784	ev_start (EV_A_ (W)w, 1);
1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1785	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1432	}	1786	}
1433		1787
1434	void	1788	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1789	ev_child_stop (EV_P_ ev_child *w)
1436	{	1790	{
1437	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1792	if (expect_false (!ev_is_active (w)))
1439	return;	1793	return;
1440		1794
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1795	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
1443	}	1797	}
1444		1798
		1799	#if EV_STAT_ENABLE
		1800
		1801	# ifdef _WIN32
		1802	# undef lstat
		1803	# define lstat(a,b) _stati64 (a,b)
		1804	# endif
		1805
		1806	#define DEF_STAT_INTERVAL 5.0074891
		1807	#define MIN_STAT_INTERVAL 0.1074891
		1808
		1809	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1810
		1811	#if EV_USE_INOTIFY
		1812	# define EV_INOTIFY_BUFSIZE 8192
		1813
		1814	static void noinline
		1815	infy_add (EV_P_ ev_stat *w)
		1816	{
		1817	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);
		1818
		1819	if (w->wd < 0)
		1820	{
		1821	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1822
		1823	/* monitor some parent directory for speedup hints */
		1824	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1825	{
		1826	char path [4096];
		1827	strcpy (path, w->path);
		1828
		1829	do
		1830	{
		1831	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1832	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1833
		1834	char *pend = strrchr (path, '/');
		1835
		1836	if (!pend)
		1837	break; /* whoops, no '/', complain to your admin */
		1838
		1839	*pend = 0;
		1840	w->wd = inotify_add_watch (fs_fd, path, mask);
		1841	}
		1842	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1843	}
		1844	}
		1845	else
		1846	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1847
		1848	if (w->wd >= 0)
		1849	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1850	}
		1851
		1852	static void noinline
		1853	infy_del (EV_P_ ev_stat *w)
		1854	{
		1855	int slot;
		1856	int wd = w->wd;
		1857
		1858	if (wd < 0)
		1859	return;
		1860
		1861	w->wd = -2;
		1862	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1863	wlist_del (&fs_hash [slot].head, (WL)w);
		1864
		1865	/* remove this watcher, if others are watching it, they will rearm */
		1866	inotify_rm_watch (fs_fd, wd);
		1867	}
		1868
		1869	static void noinline
		1870	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1871	{
		1872	if (slot < 0)
		1873	/* overflow, need to check for all hahs slots */
		1874	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1875	infy_wd (EV_A_ slot, wd, ev);
		1876	else
		1877	{
		1878	WL w_;
		1879
		1880	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1881	{
		1882	ev_stat *w = (ev_stat *)w_;
		1883	w_ = w_->next; /* lets us remove this watcher and all before it */
		1884
		1885	if (w->wd == wd || wd == -1)
		1886	{
		1887	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1888	{
		1889	w->wd = -1;
		1890	infy_add (EV_A_ w); /* re-add, no matter what */
		1891	}
		1892
		1893	stat_timer_cb (EV_A_ &w->timer, 0);
		1894	}
		1895	}
		1896	}
		1897	}
		1898
		1899	static void
		1900	infy_cb (EV_P_ ev_io *w, int revents)
		1901	{
		1902	char buf [EV_INOTIFY_BUFSIZE];
		1903	struct inotify_event *ev = (struct inotify_event *)buf;
		1904	int ofs;
		1905	int len = read (fs_fd, buf, sizeof (buf));
		1906
		1907	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1908	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1909	}
		1910
		1911	void inline_size
		1912	infy_init (EV_P)
		1913	{
		1914	if (fs_fd != -2)
		1915	return;
		1916
		1917	fs_fd = inotify_init ();
		1918
		1919	if (fs_fd >= 0)
		1920	{
		1921	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1922	ev_set_priority (&fs_w, EV_MAXPRI);
		1923	ev_io_start (EV_A_ &fs_w);
		1924	}
		1925	}
		1926
		1927	void inline_size
		1928	infy_fork (EV_P)
		1929	{
		1930	int slot;
		1931
		1932	if (fs_fd < 0)
		1933	return;
		1934
		1935	close (fs_fd);
		1936	fs_fd = inotify_init ();
		1937
		1938	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1939	{
		1940	WL w_ = fs_hash [slot].head;
		1941	fs_hash [slot].head = 0;
		1942
		1943	while (w_)
		1944	{
		1945	ev_stat *w = (ev_stat *)w_;
		1946	w_ = w_->next; /* lets us add this watcher */
		1947
		1948	w->wd = -1;
		1949
		1950	if (fs_fd >= 0)
		1951	infy_add (EV_A_ w); /* re-add, no matter what */
		1952	else
		1953	ev_timer_start (EV_A_ &w->timer);
		1954	}
		1955
		1956	}
		1957	}
		1958
		1959	#endif
		1960
		1961	void
		1962	ev_stat_stat (EV_P_ ev_stat *w)
		1963	{
		1964	if (lstat (w->path, &w->attr) < 0)
		1965	w->attr.st_nlink = 0;
		1966	else if (!w->attr.st_nlink)
		1967	w->attr.st_nlink = 1;
		1968	}
		1969
		1970	static void noinline
		1971	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1972	{
		1973	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1974
		1975	/* we copy this here each the time so that */
		1976	/* prev has the old value when the callback gets invoked */
		1977	w->prev = w->attr;
		1978	ev_stat_stat (EV_A_ w);
		1979
		1980	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1981	if (
		1982	w->prev.st_dev != w->attr.st_dev
		1983	|| w->prev.st_ino != w->attr.st_ino
		1984	|| w->prev.st_mode != w->attr.st_mode
		1985	|| w->prev.st_nlink != w->attr.st_nlink
		1986	|| w->prev.st_uid != w->attr.st_uid
		1987	|| w->prev.st_gid != w->attr.st_gid
		1988	|| w->prev.st_rdev != w->attr.st_rdev
		1989	|| w->prev.st_size != w->attr.st_size
		1990	|| w->prev.st_atime != w->attr.st_atime
		1991	|| w->prev.st_mtime != w->attr.st_mtime
		1992	|| w->prev.st_ctime != w->attr.st_ctime
		1993	) {
		1994	#if EV_USE_INOTIFY
		1995	infy_del (EV_A_ w);
		1996	infy_add (EV_A_ w);
		1997	ev_stat_stat (EV_A_ w); /* avoid race... */
		1998	#endif
		1999
		2000	ev_feed_event (EV_A_ w, EV_STAT);
		2001	}
		2002	}
		2003
		2004	void
		2005	ev_stat_start (EV_P_ ev_stat *w)
		2006	{
		2007	if (expect_false (ev_is_active (w)))
		2008	return;
		2009
		2010	/* since we use memcmp, we need to clear any padding data etc. */
		2011	memset (&w->prev, 0, sizeof (ev_statdata));
		2012	memset (&w->attr, 0, sizeof (ev_statdata));
		2013
		2014	ev_stat_stat (EV_A_ w);
		2015
		2016	if (w->interval < MIN_STAT_INTERVAL)
		2017	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2018
		2019	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2020	ev_set_priority (&w->timer, ev_priority (w));
		2021
		2022	#if EV_USE_INOTIFY
		2023	infy_init (EV_A);
		2024
		2025	if (fs_fd >= 0)
		2026	infy_add (EV_A_ w);
		2027	else
		2028	#endif
		2029	ev_timer_start (EV_A_ &w->timer);
		2030
		2031	ev_start (EV_A_ (W)w, 1);
		2032	}
		2033
		2034	void
		2035	ev_stat_stop (EV_P_ ev_stat *w)
		2036	{
		2037	clear_pending (EV_A_ (W)w);
		2038	if (expect_false (!ev_is_active (w)))
		2039	return;
		2040
		2041	#if EV_USE_INOTIFY
		2042	infy_del (EV_A_ w);
		2043	#endif
		2044	ev_timer_stop (EV_A_ &w->timer);
		2045
		2046	ev_stop (EV_A_ (W)w);
		2047	}
		2048	#endif
		2049
		2050	#if EV_IDLE_ENABLE
		2051	void
		2052	ev_idle_start (EV_P_ ev_idle *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
		2055	return;
		2056
		2057	pri_adjust (EV_A_ (W)w);
		2058
		2059	{
		2060	int active = ++idlecnt [ABSPRI (w)];
		2061
		2062	++idleall;
		2063	ev_start (EV_A_ (W)w, active);
		2064
		2065	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2066	idles [ABSPRI (w)][active - 1] = w;
		2067	}
		2068	}
		2069
		2070	void
		2071	ev_idle_stop (EV_P_ ev_idle *w)
		2072	{
		2073	clear_pending (EV_A_ (W)w);
		2074	if (expect_false (!ev_is_active (w)))
		2075	return;
		2076
		2077	{
		2078	int active = ((W)w)->active;
		2079
		2080	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2081	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2082
		2083	ev_stop (EV_A_ (W)w);
		2084	--idleall;
		2085	}
		2086	}
		2087	#endif
		2088
		2089	void
		2090	ev_prepare_start (EV_P_ ev_prepare *w)
		2091	{
		2092	if (expect_false (ev_is_active (w)))
		2093	return;
		2094
		2095	ev_start (EV_A_ (W)w, ++preparecnt);
		2096	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2097	prepares [preparecnt - 1] = w;
		2098	}
		2099
		2100	void
		2101	ev_prepare_stop (EV_P_ ev_prepare *w)
		2102	{
		2103	clear_pending (EV_A_ (W)w);
		2104	if (expect_false (!ev_is_active (w)))
		2105	return;
		2106
		2107	{
		2108	int active = ((W)w)->active;
		2109	prepares [active - 1] = prepares [--preparecnt];
		2110	((W)prepares [active - 1])->active = active;
		2111	}
		2112
		2113	ev_stop (EV_A_ (W)w);
		2114	}
		2115
		2116	void
		2117	ev_check_start (EV_P_ ev_check *w)
		2118	{
		2119	if (expect_false (ev_is_active (w)))
		2120	return;
		2121
		2122	ev_start (EV_A_ (W)w, ++checkcnt);
		2123	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2124	checks [checkcnt - 1] = w;
		2125	}
		2126
		2127	void
		2128	ev_check_stop (EV_P_ ev_check *w)
		2129	{
		2130	clear_pending (EV_A_ (W)w);
		2131	if (expect_false (!ev_is_active (w)))
		2132	return;
		2133
		2134	{
		2135	int active = ((W)w)->active;
		2136	checks [active - 1] = checks [--checkcnt];
		2137	((W)checks [active - 1])->active = active;
		2138	}
		2139
		2140	ev_stop (EV_A_ (W)w);
		2141	}
		2142
		2143	#if EV_EMBED_ENABLE
		2144	void noinline
		2145	ev_embed_sweep (EV_P_ ev_embed *w)
		2146	{
		2147	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2148	}
		2149
		2150	static void
		2151	embed_cb (EV_P_ ev_io *io, int revents)
		2152	{
		2153	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2154
		2155	if (ev_cb (w))
		2156	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2157	else
		2158	ev_embed_sweep (loop, w);
		2159	}
		2160
		2161	void
		2162	ev_embed_start (EV_P_ ev_embed *w)
		2163	{
		2164	if (expect_false (ev_is_active (w)))
		2165	return;
		2166
		2167	{
		2168	struct ev_loop *loop = w->loop;
		2169	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2170	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2171	}
		2172
		2173	ev_set_priority (&w->io, ev_priority (w));
		2174	ev_io_start (EV_A_ &w->io);
		2175
		2176	ev_start (EV_A_ (W)w, 1);
		2177	}
		2178
		2179	void
		2180	ev_embed_stop (EV_P_ ev_embed *w)
		2181	{
		2182	clear_pending (EV_A_ (W)w);
		2183	if (expect_false (!ev_is_active (w)))
		2184	return;
		2185
		2186	ev_io_stop (EV_A_ &w->io);
		2187
		2188	ev_stop (EV_A_ (W)w);
		2189	}
		2190	#endif
		2191
		2192	#if EV_FORK_ENABLE
		2193	void
		2194	ev_fork_start (EV_P_ ev_fork *w)
		2195	{
		2196	if (expect_false (ev_is_active (w)))
		2197	return;
		2198
		2199	ev_start (EV_A_ (W)w, ++forkcnt);
		2200	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2201	forks [forkcnt - 1] = w;
		2202	}
		2203
		2204	void
		2205	ev_fork_stop (EV_P_ ev_fork *w)
		2206	{
		2207	clear_pending (EV_A_ (W)w);
		2208	if (expect_false (!ev_is_active (w)))
		2209	return;
		2210
		2211	{
		2212	int active = ((W)w)->active;
		2213	forks [active - 1] = forks [--forkcnt];
		2214	((W)forks [active - 1])->active = active;
		2215	}
		2216
		2217	ev_stop (EV_A_ (W)w);
		2218	}
		2219	#endif
		2220
1445	/*****************************************************************************/	2221	/*****************************************************************************/
1446		2222
1447	struct ev_once	2223	struct ev_once
1448	{	2224	{
1449	struct ev_io io;	2225	ev_io io;
1450	struct ev_timer to;	2226	ev_timer to;
1451	void (*cb)(int revents, void *arg);	2227	void (*cb)(int revents, void *arg);
1452	void *arg;	2228	void *arg;
1453	};	2229	};
1454		2230
1455	static void	2231	static void
…		…
1464		2240
1465	cb (revents, arg);	2241	cb (revents, arg);
1466	}	2242	}
1467		2243
1468	static void	2244	static void
1469	once_cb_io (EV_P_ struct ev_io *w, int revents)	2245	once_cb_io (EV_P_ ev_io *w, int revents)
1470	{	2246	{
1471	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2247	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1472	}	2248	}
1473		2249
1474	static void	2250	static void
1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2251	once_cb_to (EV_P_ ev_timer *w, int revents)
1476	{	2252	{
1477	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2253	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1478	}	2254	}
1479		2255
1480	void	2256	void
1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2257	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1482	{	2258	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2259	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1484		2260
1485	if (!once)	2261	if (expect_false (!once))
		2262	{
1486	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2263	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1487	else	2264	return;
1488	{	2265	}
		2266
1489	once->cb = cb;	2267	once->cb = cb;
1490	once->arg = arg;	2268	once->arg = arg;
1491		2269
1492	ev_watcher_init (&once->io, once_cb_io);	2270	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	2271	if (fd >= 0)
1494	{	2272	{
1495	ev_io_set (&once->io, fd, events);	2273	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	2274	ev_io_start (EV_A_ &once->io);
1497	}	2275	}
1498		2276
1499	ev_watcher_init (&once->to, once_cb_to);	2277	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	2278	if (timeout >= 0.)
1501	{	2279	{
1502	ev_timer_set (&once->to, timeout, 0.);	2280	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	2281	ev_timer_start (EV_A_ &once->to);
1504	}
1505	}	2282	}
1506	}	2283	}
1507		2284
		2285	#ifdef __cplusplus
		2286	}
		2287	#endif
		2288

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