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Comparing libev/ev.c (file contents):
Revision 1.60 by root, Sun Nov 4 18:29:44 2007 UTC vs.
Revision 1.177 by root, Tue Dec 11 15:06:50 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
97	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	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
99	#endif	193	#endif
100		194
101	/**/	195	/**/
102		196
103	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
111	#endif	205	#endif
112		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
113	/**/	219	/**/
114		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
115	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
116	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
117	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
118	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
119
120	#include "ev.h"
121		234
122	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
123	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
124	# define inline inline	237	# define noinline __attribute__ ((noinline))
125	#else	238	#else
126	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
127	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
128	#endif	244	#endif
129		245
130	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
132		255
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
135		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
136	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
139		265
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		267
		268	#ifdef _WIN32
		269	# include "ev_win32.c"
		270	#endif
		271
142	/*****************************************************************************/	272	/*****************************************************************************/
143		273
		274	static void (*syserr_cb)(const char *msg);
		275
		276	void
		277	ev_set_syserr_cb (void (*cb)(const char *msg))
		278	{
		279	syserr_cb = cb;
		280	}
		281
		282	static void noinline
		283	syserr (const char *msg)
		284	{
		285	if (!msg)
		286	msg = "(libev) system error";
		287
		288	if (syserr_cb)
		289	syserr_cb (msg);
		290	else
		291	{
		292	perror (msg);
		293	abort ();
		294	}
		295	}
		296
		297	static void *(*alloc)(void *ptr, long size);
		298
		299	void
		300	ev_set_allocator (void *(*cb)(void *ptr, long size))
		301	{
		302	alloc = cb;
		303	}
		304
		305	inline_speed void *
		306	ev_realloc (void *ptr, long size)
		307	{
		308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		309
		310	if (!ptr && size)
		311	{
		312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		313	abort ();
		314	}
		315
		316	return ptr;
		317	}
		318
		319	#define ev_malloc(size) ev_realloc (0, (size))
		320	#define ev_free(ptr) ev_realloc ((ptr), 0)
		321
		322	/*****************************************************************************/
		323
144	typedef struct	324	typedef struct
145	{	325	{
146	struct ev_watcher_list *head;	326	WL head;
147	unsigned char events;	327	unsigned char events;
148	unsigned char reify;	328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
149	} ANFD;	332	} ANFD;
150		333
151	typedef struct	334	typedef struct
152	{	335	{
153	W w;	336	W w;
154	int events;	337	int events;
155	} ANPENDING;	338	} ANPENDING;
156		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
157	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
158		348
159	struct ev_loop	349	struct ev_loop
160	{	350	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	354	#include "ev_vars.h"
163	};
164	# undef VAR	355	#undef VAR
		356	};
165	# include "ev_wrap.h"	357	#include "ev_wrap.h"
		358
		359	static struct ev_loop default_loop_struct;
		360	struct ev_loop *ev_default_loop_ptr;
166		361
167	#else	362	#else
168		363
		364	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	366	#include "ev_vars.h"
171	# undef VAR	367	#undef VAR
		368
		369	static int ev_default_loop_ptr;
172		370
173	#endif	371	#endif
174		372
175	/*****************************************************************************/	373	/*****************************************************************************/
176		374
177	inline ev_tstamp	375	ev_tstamp
178	ev_time (void)	376	ev_time (void)
179	{	377	{
180	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
181	struct timespec ts;	379	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	386	#endif
189	}	387	}
190		388
191	inline ev_tstamp	389	ev_tstamp inline_size
192	get_clock (void)	390	get_clock (void)
193	{	391	{
194	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
196	{	394	{
…		…
201	#endif	399	#endif
202		400
203	return ev_time ();	401	return ev_time ();
204	}	402	}
205		403
		404	#if EV_MULTIPLICITY
206	ev_tstamp	405	ev_tstamp
207	ev_now (EV_P)	406	ev_now (EV_P)
208	{	407	{
209	return rt_now;	408	return ev_rt_now;
210	}	409	}
		410	#endif
211		411
212	#define array_roundsize(base,n) ((n) | 4 & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
213		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
		439
214	#define array_needsize(base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
216	{ \	442	{ \
217	int newcnt = cur; \	443	int ocur_ = (cur); \
218	do \	444	(base) = (type *)array_realloc \
219	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
220	newcnt = array_roundsize (base, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
221	} \	447	}
222	while ((cnt) > newcnt); \	448
		449	#if 0
		450	#define array_slim(type,stem) \
		451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
223	\	452	{ \
224	base = realloc (base, sizeof (*base) * (newcnt)); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
225	init (base + cur, newcnt - cur); \	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
226	cur = newcnt; \	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
227	}	456	}
		457	#endif
		458
		459	#define array_free(stem, idx) \
		460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
228		461
229	/*****************************************************************************/	462	/*****************************************************************************/
230		463
231	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_size
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
232	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
233	{	494	{
234	while (count--)	495	while (count--)
235	{	496	{
236	base->head = 0;	497	base->head = 0;
…		…
239		500
240	++base;	501	++base;
241	}	502	}
242	}	503	}
243		504
244	static void	505	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	506	fd_event (EV_P_ int fd, int revents)
270	{	507	{
271	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	509	ev_io *w;
273		510
274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
275	{	512	{
276	int ev = w->events & events;	513	int ev = w->events & revents;
277		514
278	if (ev)	515	if (ev)
279	event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
280	}	517	}
281	}	518	}
282		519
283	/*****************************************************************************/	520	void
		521	ev_feed_fd_event (EV_P_ int fd, int revents)
		522	{
		523	if (fd >= 0 && fd < anfdmax)
		524	fd_event (EV_A_ fd, revents);
		525	}
284		526
285	static void	527	void inline_size
286	fd_reify (EV_P)	528	fd_reify (EV_P)
287	{	529	{
288	int i;	530	int i;
289		531
290	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
291	{	533	{
292	int fd = fdchanges [i];	534	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	536	ev_io *w;
295		537
296	int events = 0;	538	int events = 0;
297		539
298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
299	events |= w->events;	541	events |= w->events;
300		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
301	anfd->reify = 0;	552	anfd->reify = 0;
302		553
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	555	anfd->events = events;
307	}
308	}	556	}
309		557
310	fdchangecnt = 0;	558	fdchangecnt = 0;
311	}	559	}
312		560
313	static void	561	void inline_size
314	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
315	{	563	{
316	if (anfds [fd].reify || fdchangecnt < 0)	564	if (expect_false (anfds [fd].reify))
317	return;	565	return;
318		566
319	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
320		568
321	++fdchangecnt;	569	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
324	}	572	}
325		573
326	static void	574	void inline_speed
327	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
328	{	576	{
329	struct ev_io *w;	577	ev_io *w;
330		578
331	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
332	{	580	{
333	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
335	}	583	}
		584	}
		585
		586	int inline_size
		587	fd_valid (int fd)
		588	{
		589	#ifdef _WIN32
		590	return _get_osfhandle (fd) != -1;
		591	#else
		592	return fcntl (fd, F_GETFD) != -1;
		593	#endif
336	}	594	}
337		595
338	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
339	static void	597	static void noinline
340	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
341	{	599	{
342	int fd;	600	int fd;
343		601
344	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	603	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
348	}	606	}
349		607
350	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
351	static void	609	static void noinline
352	fd_enomem (EV_P)	610	fd_enomem (EV_P)
353	{	611	{
354	int fd = anfdmax;	612	int fd;
355		613
356	while (fd--)	614	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	615	if (anfds [fd].events)
358	{	616	{
359	close (fd);
360	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
361	return;	618	return;
362	}	619	}
363	}	620	}
364		621
365	/* susually called after fork if method needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
366	static void	623	static void noinline
367	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
368	{	625	{
369	int fd;	626	int fd;
370		627
371	/* this should be highly optimised to not do anything but set a flag */
372	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
373	if (anfds [fd].events)	629	if (anfds [fd].events)
374	{	630	{
375	anfds [fd].events = 0;	631	anfds [fd].events = 0;
376	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
377	}	633	}
378	}	634	}
379		635
380	/*****************************************************************************/	636	/*****************************************************************************/
381		637
382	static void	638	void inline_speed
383	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
384	{	640	{
385	WT w = heap [k];	641	WT w = heap [k];
386		642
387	while (k && heap [k >> 1]->at > w->at)	643	while (k && heap [k >> 1]->at > w->at)
388	{	644	{
389	heap [k] = heap [k >> 1];	645	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	646	((W)heap [k])->active = k + 1;
391	k >>= 1;	647	k >>= 1;
392	}	648	}
393		649
394	heap [k] = w;	650	heap [k] = w;
395	heap [k]->active = k + 1;	651	((W)heap [k])->active = k + 1;
396		652
397	}	653	}
398		654
399	static void	655	void inline_speed
400	downheap (WT *heap, int N, int k)	656	downheap (WT *heap, int N, int k)
401	{	657	{
402	WT w = heap [k];	658	WT w = heap [k];
403		659
404	while (k < (N >> 1))	660	while (k < (N >> 1))
…		…
410		666
411	if (w->at <= heap [j]->at)	667	if (w->at <= heap [j]->at)
412	break;	668	break;
413		669
414	heap [k] = heap [j];	670	heap [k] = heap [j];
415	heap [k]->active = k + 1;	671	((W)heap [k])->active = k + 1;
416	k = j;	672	k = j;
417	}	673	}
418		674
419	heap [k] = w;	675	heap [k] = w;
420	heap [k]->active = k + 1;	676	((W)heap [k])->active = k + 1;
		677	}
		678
		679	void inline_size
		680	adjustheap (WT *heap, int N, int k)
		681	{
		682	upheap (heap, k);
		683	downheap (heap, N, k);
421	}	684	}
422		685
423	/*****************************************************************************/	686	/*****************************************************************************/
424		687
425	typedef struct	688	typedef struct
426	{	689	{
427	struct ev_watcher_list *head;	690	WL head;
428	sig_atomic_t volatile gotsig;	691	sig_atomic_t volatile gotsig;
429	} ANSIG;	692	} ANSIG;
430		693
431	static ANSIG *signals;	694	static ANSIG *signals;
432	static int signalmax;	695	static int signalmax;
433		696
434	static int sigpipe [2];	697	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	698	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	699	static ev_io sigev;
437		700
438	static void	701	void inline_size
439	signals_init (ANSIG *base, int count)	702	signals_init (ANSIG *base, int count)
440	{	703	{
441	while (count--)	704	while (count--)
442	{	705	{
443	base->head = 0;	706	base->head = 0;
…		…
448	}	711	}
449		712
450	static void	713	static void
451	sighandler (int signum)	714	sighandler (int signum)
452	{	715	{
		716	#if _WIN32
		717	signal (signum, sighandler);
		718	#endif
		719
453	signals [signum - 1].gotsig = 1;	720	signals [signum - 1].gotsig = 1;
454		721
455	if (!gotsig)	722	if (!gotsig)
456	{	723	{
457	int old_errno = errno;	724	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	726	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	727	errno = old_errno;
461	}	728	}
462	}	729	}
463		730
		731	void noinline
		732	ev_feed_signal_event (EV_P_ int signum)
		733	{
		734	WL w;
		735
		736	#if EV_MULTIPLICITY
		737	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		738	#endif
		739
		740	--signum;
		741
		742	if (signum < 0 || signum >= signalmax)
		743	return;
		744
		745	signals [signum].gotsig = 0;
		746
		747	for (w = signals [signum].head; w; w = w->next)
		748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		749	}
		750
464	static void	751	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	752	sigcb (EV_P_ ev_io *iow, int revents)
466	{	753	{
467	struct ev_watcher_list *w;
468	int signum;	754	int signum;
469		755
470	read (sigpipe [0], &revents, 1);	756	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	757	gotsig = 0;
472		758
473	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
475	{	761	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	762	}
482		763
483	static void	764	void inline_speed
		765	fd_intern (int fd)
		766	{
		767	#ifdef _WIN32
		768	int arg = 1;
		769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		770	#else
		771	fcntl (fd, F_SETFD, FD_CLOEXEC);
		772	fcntl (fd, F_SETFL, O_NONBLOCK);
		773	#endif
		774	}
		775
		776	static void noinline
484	siginit (EV_P)	777	siginit (EV_P)
485	{	778	{
486	#ifndef WIN32	779	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	780	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		781
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	782	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	783	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	785	}
499		786
500	/*****************************************************************************/	787	/*****************************************************************************/
501		788
		789	static ev_child *childs [EV_PID_HASHSIZE];
		790
502	#ifndef WIN32	791	#ifndef _WIN32
503		792
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	793	static ev_signal childev;
		794
		795	void inline_speed
		796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		797	{
		798	ev_child *w;
		799
		800	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		801	if (w->pid == pid || !w->pid)
		802	{
		803	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		804	w->rpid = pid;
		805	w->rstatus = status;
		806	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		807	}
		808	}
506		809
507	#ifndef WCONTINUED	810	#ifndef WCONTINUED
508	# define WCONTINUED 0	811	# define WCONTINUED 0
509	#endif	812	#endif
510		813
511	static void	814	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
517	if (w->pid == pid || !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it *now* */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	815	childcb (EV_P_ ev_signal *sw, int revents)
528	{	816	{
529	int pid, status;	817	int pid, status;
530		818
		819	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	820	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
532	{	821	if (!WCONTINUED
		822	|| errno != EINVAL
		823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		824	return;
		825
533	/* make sure we are called again until all childs have been reaped */	826	/* make sure we are called again until all childs have been reaped */
		827	/* we need to do it this way so that the callback gets called before we continue */
534	event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		829
536	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
538	}
539	}	833	}
540		834
541	#endif	835	#endif
542		836
543	/*****************************************************************************/	837	/*****************************************************************************/
544		838
		839	#if EV_USE_PORT
		840	# include "ev_port.c"
		841	#endif
545	#if EV_USE_KQUEUE	842	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	843	# include "ev_kqueue.c"
547	#endif	844	#endif
548	#if EV_USE_EPOLL	845	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	846	# include "ev_epoll.c"
…		…
566	{	863	{
567	return EV_VERSION_MINOR;	864	return EV_VERSION_MINOR;
568	}	865	}
569		866
570	/* return true if we are running with elevated privileges and should ignore env variables */	867	/* return true if we are running with elevated privileges and should ignore env variables */
571	static int	868	int inline_size
572	enable_secure (void)	869	enable_secure (void)
573	{	870	{
574	#ifdef WIN32	871	#ifdef _WIN32
575	return 0;	872	return 0;
576	#else	873	#else
577	return getuid () != geteuid ()	874	return getuid () != geteuid ()
578	|| getgid () != getegid ();	875	|| getgid () != getegid ();
579	#endif	876	#endif
580	}	877	}
581		878
582	int	879	unsigned int
583	ev_method (EV_P)	880	ev_supported_backends (void)
584	{	881	{
585	return method;	882	unsigned int flags = 0;
586	}
587		883
588	static void	884	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
589	loop_init (EV_P_ int methods)	885	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		886	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		887	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		888	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		889
		890	return flags;
		891	}
		892
		893	unsigned int
		894	ev_recommended_backends (void)
590	{	895	{
591	if (!method)	896	unsigned int flags = ev_supported_backends ();
		897
		898	#ifndef __NetBSD__
		899	/* kqueue is borked on everything but netbsd apparently */
		900	/* it usually doesn't work correctly on anything but sockets and pipes */
		901	flags &= ~EVBACKEND_KQUEUE;
		902	#endif
		903	#ifdef __APPLE__
		904	// flags &= ~EVBACKEND_KQUEUE; for documentation
		905	flags &= ~EVBACKEND_POLL;
		906	#endif
		907
		908	return flags;
		909	}
		910
		911	unsigned int
		912	ev_embeddable_backends (void)
		913	{
		914	return EVBACKEND_EPOLL
		915	| EVBACKEND_KQUEUE
		916	| EVBACKEND_PORT;
		917	}
		918
		919	unsigned int
		920	ev_backend (EV_P)
		921	{
		922	return backend;
		923	}
		924
		925	unsigned int
		926	ev_loop_count (EV_P)
		927	{
		928	return loop_count;
		929	}
		930
		931	static void noinline
		932	loop_init (EV_P_ unsigned int flags)
		933	{
		934	if (!backend)
592	{	935	{
593	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
594	{	937	{
595	struct timespec ts;	938	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	940	have_monotonic = 1;
598	}	941	}
599	#endif	942	#endif
600		943
601	rt_now = ev_time ();	944	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	945	mn_now = get_clock ();
603	now_floor = mn_now;	946	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
605		948
606	if (methods == EVMETHOD_AUTO)	949	/* pid check not overridable via env */
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
		955	if (!(flags & EVFLAG_NOENV)
		956	&& !enable_secure ()
		957	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		959
612	method = 0;	960	if (!(flags & 0x0000ffffUL))
		961	flags |= ev_recommended_backends ();
		962
		963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
		969	#if EV_USE_PORT
		970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		971	#endif
613	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	974	#endif
616	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	976	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	977	#endif
619	#if EV_USE_POLL	978	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	979	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	980	#endif
622	#if EV_USE_SELECT	981	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	983	#endif
625	}
626	}
627		984
628	void	985	ev_init (&sigev, sigcb);
		986	ev_set_priority (&sigev, EV_MAXPRI);
		987	}
		988	}
		989
		990	static void noinline
629	loop_destroy (EV_P)	991	loop_destroy (EV_P)
630	{	992	{
		993	int i;
		994
		995	#if EV_USE_INOTIFY
		996	if (fs_fd >= 0)
		997	close (fs_fd);
		998	#endif
		999
		1000	if (backend_fd >= 0)
		1001	close (backend_fd);
		1002
		1003	#if EV_USE_PORT
		1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1005	#endif
631	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1007	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	1008	#endif
634	#if EV_USE_EPOLL	1009	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1010	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	1011	#endif
637	#if EV_USE_POLL	1012	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1013	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	1014	#endif
640	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	1017	#endif
643		1018
644	method = 0;	1019	for (i = NUMPRI; i--; )
645	/*TODO*/	1020	{
646	}	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
647		1026
648	void	1027	/* have to use the microsoft-never-gets-it-right macro */
		1028	array_free (fdchange, EMPTY);
		1029	array_free (timer, EMPTY);
		1030	#if EV_PERIODIC_ENABLE
		1031	array_free (periodic, EMPTY);
		1032	#endif
		1033	array_free (prepare, EMPTY);
		1034	array_free (check, EMPTY);
		1035
		1036	backend = 0;
		1037	}
		1038
		1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
649	loop_fork (EV_P)	1042	loop_fork (EV_P)
650	{	1043	{
651	/*TODO*/	1044	#if EV_USE_PORT
		1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1046	#endif
		1047	#if EV_USE_KQUEUE
		1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1049	#endif
652	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1051	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	1052	#endif
655	#if EV_USE_KQUEUE	1053	#if EV_USE_INOTIFY
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1054	infy_fork (EV_A);
657	#endif	1055	#endif
		1056
		1057	if (ev_is_active (&sigev))
		1058	{
		1059	/* default loop */
		1060
		1061	ev_ref (EV_A);
		1062	ev_io_stop (EV_A_ &sigev);
		1063	close (sigpipe [0]);
		1064	close (sigpipe [1]);
		1065
		1066	while (pipe (sigpipe))
		1067	syserr ("(libev) error creating pipe");
		1068
		1069	siginit (EV_A);
		1070	}
		1071
		1072	postfork = 0;
658	}	1073	}
659		1074
660	#if EV_MULTIPLICITY	1075	#if EV_MULTIPLICITY
661	struct ev_loop *	1076	struct ev_loop *
662	ev_loop_new (int methods)	1077	ev_loop_new (unsigned int flags)
663	{	1078	{
664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1079	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
665		1080
		1081	memset (loop, 0, sizeof (struct ev_loop));
		1082
666	loop_init (EV_A_ methods);	1083	loop_init (EV_A_ flags);
667		1084
668	if (ev_method (EV_A))	1085	if (ev_backend (EV_A))
669	return loop;	1086	return loop;
670		1087
671	return 0;	1088	return 0;
672	}	1089	}
673		1090
674	void	1091	void
675	ev_loop_destroy (EV_P)	1092	ev_loop_destroy (EV_P)
676	{	1093	{
677	loop_destroy (EV_A);	1094	loop_destroy (EV_A);
678	free (loop);	1095	ev_free (loop);
679	}	1096	}
680		1097
681	void	1098	void
682	ev_loop_fork (EV_P)	1099	ev_loop_fork (EV_P)
683	{	1100	{
684	loop_fork (EV_A);	1101	postfork = 1;
685	}	1102	}
686		1103
687	#endif	1104	#endif
688		1105
689	#if EV_MULTIPLICITY	1106	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	1107	struct ev_loop *
		1108	ev_default_loop_init (unsigned int flags)
694	#else	1109	#else
695	static int default_loop;
696
697	int	1110	int
		1111	ev_default_loop (unsigned int flags)
698	#endif	1112	#endif
699	ev_default_loop (int methods)
700	{	1113	{
701	if (sigpipe [0] == sigpipe [1])	1114	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1115	if (pipe (sigpipe))
703	return 0;	1116	return 0;
704		1117
705	if (!default_loop)	1118	if (!ev_default_loop_ptr)
706	{	1119	{
707	#if EV_MULTIPLICITY	1120	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1121	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1122	#else
710	default_loop = 1;	1123	ev_default_loop_ptr = 1;
711	#endif	1124	#endif
712		1125
713	loop_init (EV_A_ methods);	1126	loop_init (EV_A_ flags);
714		1127
715	if (ev_method (EV_A))	1128	if (ev_backend (EV_A))
716	{	1129	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1130	siginit (EV_A);
720		1131
721	#ifndef WIN32	1132	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1133	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1134	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1135	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1136	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1137	#endif
727	}	1138	}
728	else	1139	else
729	default_loop = 0;	1140	ev_default_loop_ptr = 0;
730	}	1141	}
731		1142
732	return default_loop;	1143	return ev_default_loop_ptr;
733	}	1144	}
734		1145
735	void	1146	void
736	ev_default_destroy (void)	1147	ev_default_destroy (void)
737	{	1148	{
738	#if EV_MULTIPLICITY	1149	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1150	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1151	#endif
741		1152
		1153	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1154	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1155	ev_signal_stop (EV_A_ &childev);
		1156	#endif
744		1157
745	ev_ref (EV_A); /* signal watcher */	1158	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1159	ev_io_stop (EV_A_ &sigev);
747		1160
748	close (sigpipe [0]); sigpipe [0] = 0;	1161	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1166
754	void	1167	void
755	ev_default_fork (void)	1168	ev_default_fork (void)
756	{	1169	{
757	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1171	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1172	#endif
760		1173
761	loop_fork (EV_A);	1174	if (backend)
762		1175	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1176	}
771		1177
772	/*****************************************************************************/	1178	/*****************************************************************************/
773		1179
774	static void	1180	void
		1181	ev_invoke (EV_P_ void *w, int revents)
		1182	{
		1183	EV_CB_INVOKE ((W)w, revents);
		1184	}
		1185
		1186	void inline_speed
775	call_pending (EV_P)	1187	call_pending (EV_P)
776	{	1188	{
777	int pri;	1189	int pri;
778		1190
779	for (pri = NUMPRI; pri--; )	1191	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1192	while (pendingcnt [pri])
781	{	1193	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1195
784	if (p->w)	1196	if (expect_true (p->w))
785	{	1197	{
		1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1199
786	p->w->pending = 0;	1200	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
788	}	1202	}
789	}	1203	}
790	}	1204	}
791		1205
792	static void	1206	void inline_size
793	timers_reify (EV_P)	1207	timers_reify (EV_P)
794	{	1208	{
795	while (timercnt && timers [0]->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1210	{
797	struct ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
		1212
		1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
798		1214
799	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
800	if (w->repeat)	1216	if (w->repeat)
801	{	1217	{
802	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1219
803	w->at = mn_now + w->repeat;	1220	((WT)w)->at += w->repeat;
		1221	if (((WT)w)->at < mn_now)
		1222	((WT)w)->at = mn_now;
		1223
804	downheap ((WT *)timers, timercnt, 0);	1224	downheap ((WT *)timers, timercnt, 0);
805	}	1225	}
806	else	1226	else
807	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1227	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
808		1228
809	event (EV_A_ (W)w, EV_TIMEOUT);	1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
810	}	1230	}
811	}	1231	}
812		1232
813	static void	1233	#if EV_PERIODIC_ENABLE
		1234	void inline_size
814	periodics_reify (EV_P)	1235	periodics_reify (EV_P)
815	{	1236	{
816	while (periodiccnt && periodics [0]->at <= rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
817	{	1238	{
818	struct ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
		1240
		1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
819		1242
820	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
821	if (w->interval)	1244	if (w->reschedule_cb)
822	{	1245	{
		1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1248	downheap ((WT *)periodics, periodiccnt, 0);
		1249	}
		1250	else if (w->interval)
		1251	{
823	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
824	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
825	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
826	}	1256	}
827	else	1257	else
828	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
829		1259
830	event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
831	}	1261	}
832	}	1262	}
833		1263
834	static void	1264	static void noinline
835	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
836	{	1266	{
837	int i;	1267	int i;
838		1268
839	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
840	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
841	{	1271	{
842	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
843		1273
		1274	if (w->reschedule_cb)
		1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
844	if (w->interval)	1276	else if (w->interval)
		1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1278	}
		1279
		1280	/* now rebuild the heap */
		1281	for (i = periodiccnt >> 1; i--; )
		1282	downheap ((WT *)periodics, periodiccnt, i);
		1283	}
		1284	#endif
		1285
		1286	#if EV_IDLE_ENABLE
		1287	void inline_size
		1288	idle_reify (EV_P)
		1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
845	{	1295	{
846	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1296	if (pendingcnt [pri])
		1297	break;
847		1298
848	if (fabs (diff) >= 1e-4)	1299	if (idlecnt [pri])
849	{	1300	{
850	ev_periodic_stop (EV_A_ w);	1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
851	ev_periodic_start (EV_A_ w);	1302	break;
852
853	i = 0; /* restart loop, inefficient, but time jumps should be rare */
854	}	1303	}
855	}	1304	}
856	}	1305	}
857	}	1306	}
		1307	#endif
858		1308
859	inline int	1309	int inline_size
860	time_update_monotonic (EV_P)	1310	time_update_monotonic (EV_P)
861	{	1311	{
862	mn_now = get_clock ();	1312	mn_now = get_clock ();
863		1313
864	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1314	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
865	{	1315	{
866	rt_now = rtmn_diff + mn_now;	1316	ev_rt_now = rtmn_diff + mn_now;
867	return 0;	1317	return 0;
868	}	1318	}
869	else	1319	else
870	{	1320	{
871	now_floor = mn_now;	1321	now_floor = mn_now;
872	rt_now = ev_time ();	1322	ev_rt_now = ev_time ();
873	return 1;	1323	return 1;
874	}	1324	}
875	}	1325	}
876		1326
877	static void	1327	void inline_size
878	time_update (EV_P)	1328	time_update (EV_P)
879	{	1329	{
880	int i;	1330	int i;
881		1331
882	#if EV_USE_MONOTONIC	1332	#if EV_USE_MONOTONIC
…		…
884	{	1334	{
885	if (time_update_monotonic (EV_A))	1335	if (time_update_monotonic (EV_A))
886	{	1336	{
887	ev_tstamp odiff = rtmn_diff;	1337	ev_tstamp odiff = rtmn_diff;
888		1338
889	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1339	/* loop a few times, before making important decisions.
		1340	* on the choice of "4": one iteration isn't enough,
		1341	* in case we get preempted during the calls to
		1342	* ev_time and get_clock. a second call is almost guaranteed
		1343	* to succeed in that case, though. and looping a few more times
		1344	* doesn't hurt either as we only do this on time-jumps or
		1345	* in the unlikely event of having been preempted here.
		1346	*/
		1347	for (i = 4; --i; )
890	{	1348	{
891	rtmn_diff = rt_now - mn_now;	1349	rtmn_diff = ev_rt_now - mn_now;
892		1350
893	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1351	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
894	return; /* all is well */	1352	return; /* all is well */
895		1353
896	rt_now = ev_time ();	1354	ev_rt_now = ev_time ();
897	mn_now = get_clock ();	1355	mn_now = get_clock ();
898	now_floor = mn_now;	1356	now_floor = mn_now;
899	}	1357	}
900		1358
		1359	# if EV_PERIODIC_ENABLE
901	periodics_reschedule (EV_A);	1360	periodics_reschedule (EV_A);
		1361	# endif
902	/* no timer adjustment, as the monotonic clock doesn't jump */	1362	/* no timer adjustment, as the monotonic clock doesn't jump */
903	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1363	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
904	}	1364	}
905	}	1365	}
906	else	1366	else
907	#endif	1367	#endif
908	{	1368	{
909	rt_now = ev_time ();	1369	ev_rt_now = ev_time ();
910		1370
911	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1371	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
912	{	1372	{
		1373	#if EV_PERIODIC_ENABLE
913	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
914		1375	#endif
915	/* adjust timers. this is easy, as the offset is the same for all */	1376	/* adjust timers. this is easy, as the offset is the same for all of them */
916	for (i = 0; i < timercnt; ++i)	1377	for (i = 0; i < timercnt; ++i)
917	timers [i]->at += rt_now - mn_now;	1378	((WT)timers [i])->at += ev_rt_now - mn_now;
918	}	1379	}
919		1380
920	mn_now = rt_now;	1381	mn_now = ev_rt_now;
921	}	1382	}
922	}	1383	}
923		1384
924	void	1385	void
925	ev_ref (EV_P)	1386	ev_ref (EV_P)
…		…
936	static int loop_done;	1397	static int loop_done;
937		1398
938	void	1399	void
939	ev_loop (EV_P_ int flags)	1400	ev_loop (EV_P_ int flags)
940	{	1401	{
941	double block;
942	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1402	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1403	? EVUNLOOP_ONE
		1404	: EVUNLOOP_CANCEL;
		1405
		1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
943		1407
944	do	1408	do
945	{	1409	{
		1410	#ifndef _WIN32
		1411	if (expect_false (curpid)) /* penalise the forking check even more */
		1412	if (expect_false (getpid () != curpid))
		1413	{
		1414	curpid = getpid ();
		1415	postfork = 1;
		1416	}
		1417	#endif
		1418
		1419	#if EV_FORK_ENABLE
		1420	/* we might have forked, so queue fork handlers */
		1421	if (expect_false (postfork))
		1422	if (forkcnt)
		1423	{
		1424	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1425	call_pending (EV_A);
		1426	}
		1427	#endif
		1428
946	/* queue check watchers (and execute them) */	1429	/* queue prepare watchers (and execute them) */
947	if (expect_false (preparecnt))	1430	if (expect_false (preparecnt))
948	{	1431	{
949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1432	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
950	call_pending (EV_A);	1433	call_pending (EV_A);
951	}	1434	}
952		1435
		1436	if (expect_false (!activecnt))
		1437	break;
		1438
		1439	/* we might have forked, so reify kernel state if necessary */
		1440	if (expect_false (postfork))
		1441	loop_fork (EV_A);
		1442
953	/* update fd-related kernel structures */	1443	/* update fd-related kernel structures */
954	fd_reify (EV_A);	1444	fd_reify (EV_A);
955		1445
956	/* calculate blocking time */	1446	/* calculate blocking time */
		1447	{
		1448	ev_tstamp block;
957		1449
958	/* we only need this for !monotonic clockor timers, but as we basically	1450	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
959	always have timers, we just calculate it always */	1451	block = 0.; /* do not block at all */
		1452	else
		1453	{
		1454	/* update time to cancel out callback processing overhead */
960	#if EV_USE_MONOTONIC	1455	#if EV_USE_MONOTONIC
961	if (expect_true (have_monotonic))	1456	if (expect_true (have_monotonic))
962	time_update_monotonic (EV_A);	1457	time_update_monotonic (EV_A);
963	else	1458	else
964	#endif	1459	#endif
965	{	1460	{
966	rt_now = ev_time ();	1461	ev_rt_now = ev_time ();
967	mn_now = rt_now;	1462	mn_now = ev_rt_now;
968	}	1463	}
969		1464
970	if (flags & EVLOOP_NONBLOCK || idlecnt)
971	block = 0.;
972	else
973	{
974	block = MAX_BLOCKTIME;	1465	block = MAX_BLOCKTIME;
975		1466
976	if (timercnt)	1467	if (timercnt)
977	{	1468	{
978	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
979	if (block > to) block = to;	1470	if (block > to) block = to;
980	}	1471	}
981		1472
		1473	#if EV_PERIODIC_ENABLE
982	if (periodiccnt)	1474	if (periodiccnt)
983	{	1475	{
984	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
985	if (block > to) block = to;	1477	if (block > to) block = to;
986	}	1478	}
		1479	#endif
987		1480
988	if (block < 0.) block = 0.;	1481	if (expect_false (block < 0.)) block = 0.;
989	}	1482	}
990		1483
		1484	++loop_count;
991	method_poll (EV_A_ block);	1485	backend_poll (EV_A_ block);
		1486	}
992		1487
993	/* update rt_now, do magic */	1488	/* update ev_rt_now, do magic */
994	time_update (EV_A);	1489	time_update (EV_A);
995		1490
996	/* queue pending timers and reschedule them */	1491	/* queue pending timers and reschedule them */
997	timers_reify (EV_A); /* relative timers called last */	1492	timers_reify (EV_A); /* relative timers called last */
		1493	#if EV_PERIODIC_ENABLE
998	periodics_reify (EV_A); /* absolute timers called first */	1494	periodics_reify (EV_A); /* absolute timers called first */
		1495	#endif
999		1496
		1497	#if EV_IDLE_ENABLE
1000	/* queue idle watchers unless io or timers are pending */	1498	/* queue idle watchers unless other events are pending */
1001	if (!pendingcnt)	1499	idle_reify (EV_A);
1002	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1500	#endif
1003		1501
1004	/* queue check watchers, to be executed first */	1502	/* queue check watchers, to be executed first */
1005	if (checkcnt)	1503	if (expect_false (checkcnt))
1006	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1007		1505
1008	call_pending (EV_A);	1506	call_pending (EV_A);
		1507
1009	}	1508	}
1010	while (activecnt && !loop_done);	1509	while (expect_true (activecnt && !loop_done));
1011		1510
1012	if (loop_done != 2)	1511	if (loop_done == EVUNLOOP_ONE)
1013	loop_done = 0;	1512	loop_done = EVUNLOOP_CANCEL;
1014	}	1513	}
1015		1514
1016	void	1515	void
1017	ev_unloop (EV_P_ int how)	1516	ev_unloop (EV_P_ int how)
1018	{	1517	{
1019	loop_done = how;	1518	loop_done = how;
1020	}	1519	}
1021		1520
1022	/*****************************************************************************/	1521	/*****************************************************************************/
1023		1522
1024	inline void	1523	void inline_size
1025	wlist_add (WL *head, WL elem)	1524	wlist_add (WL *head, WL elem)
1026	{	1525	{
1027	elem->next = *head;	1526	elem->next = *head;
1028	*head = elem;	1527	*head = elem;
1029	}	1528	}
1030		1529
1031	inline void	1530	void inline_size
1032	wlist_del (WL *head, WL elem)	1531	wlist_del (WL *head, WL elem)
1033	{	1532	{
1034	while (*head)	1533	while (*head)
1035	{	1534	{
1036	if (*head == elem)	1535	if (*head == elem)
…		…
1041		1540
1042	head = &(*head)->next;	1541	head = &(*head)->next;
1043	}	1542	}
1044	}	1543	}
1045		1544
1046	inline void	1545	void inline_speed
1047	ev_clear_pending (EV_P_ W w)	1546	clear_pending (EV_P_ W w)
1048	{	1547	{
1049	if (w->pending)	1548	if (w->pending)
1050	{	1549	{
1051	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1052	w->pending = 0;	1551	w->pending = 0;
1053	}	1552	}
1054	}	1553	}
1055		1554
1056	inline void	1555	int
		1556	ev_clear_pending (EV_P_ void *w)
		1557	{
		1558	W w_ = (W)w;
		1559	int pending = w_->pending;
		1560
		1561	if (expect_true (pending))
		1562	{
		1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1564	w_->pending = 0;
		1565	p->w = 0;
		1566	return p->events;
		1567	}
		1568	else
		1569	return 0;
		1570	}
		1571
		1572	void inline_size
		1573	pri_adjust (EV_P_ W w)
		1574	{
		1575	int pri = w->priority;
		1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1578	w->priority = pri;
		1579	}
		1580
		1581	void inline_speed
1057	ev_start (EV_P_ W w, int active)	1582	ev_start (EV_P_ W w, int active)
1058	{	1583	{
1059	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1584	pri_adjust (EV_A_ w);
1060	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1061
1062	w->active = active;	1585	w->active = active;
1063	ev_ref (EV_A);	1586	ev_ref (EV_A);
1064	}	1587	}
1065		1588
1066	inline void	1589	void inline_size
1067	ev_stop (EV_P_ W w)	1590	ev_stop (EV_P_ W w)
1068	{	1591	{
1069	ev_unref (EV_A);	1592	ev_unref (EV_A);
1070	w->active = 0;	1593	w->active = 0;
1071	}	1594	}
1072		1595
1073	/*****************************************************************************/	1596	/*****************************************************************************/
1074		1597
1075	void	1598	void noinline
1076	ev_io_start (EV_P_ struct ev_io *w)	1599	ev_io_start (EV_P_ ev_io *w)
1077	{	1600	{
1078	int fd = w->fd;	1601	int fd = w->fd;
1079		1602
1080	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1081	return;	1604	return;
1082		1605
1083	assert (("ev_io_start called with negative fd", fd >= 0));	1606	assert (("ev_io_start called with negative fd", fd >= 0));
1084		1607
1085	ev_start (EV_A_ (W)w, 1);	1608	ev_start (EV_A_ (W)w, 1);
1086	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1087	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1610	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1088		1611
1089	fd_change (EV_A_ fd);	1612	fd_change (EV_A_ fd);
1090	}	1613	}
1091		1614
1092	void	1615	void noinline
1093	ev_io_stop (EV_P_ struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1094	{	1617	{
1095	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1096	if (!ev_is_active (w))	1619	if (expect_false (!ev_is_active (w)))
1097	return;	1620	return;
		1621
		1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1098		1623
1099	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1100	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1101		1626
1102	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd);
1103	}	1628	}
1104		1629
1105	void	1630	void noinline
1106	ev_timer_start (EV_P_ struct ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
1107	{	1632	{
1108	if (ev_is_active (w))	1633	if (expect_false (ev_is_active (w)))
1109	return;	1634	return;
1110		1635
1111	w->at += mn_now;	1636	((WT)w)->at += mn_now;
1112		1637
1113	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1114		1639
1115	ev_start (EV_A_ (W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
1116	array_needsize (timers, timermax, timercnt, );	1641	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1117	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = w;
1118	upheap ((WT *)timers, timercnt - 1);	1643	upheap ((WT *)timers, timercnt - 1);
1119	}
1120		1644
1121	void	1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1646	}
		1647
		1648	void noinline
1122	ev_timer_stop (EV_P_ struct ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
1123	{	1650	{
1124	ev_clear_pending (EV_A_ (W)w);	1651	clear_pending (EV_A_ (W)w);
1125	if (!ev_is_active (w))	1652	if (expect_false (!ev_is_active (w)))
1126	return;	1653	return;
1127		1654
1128	if (w->active < timercnt--)	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
		1660	if (expect_true (--active < --timercnt))
1129	{	1661	{
1130	timers [w->active - 1] = timers [timercnt];	1662	timers [active] = timers [timercnt];
1131	downheap ((WT *)timers, timercnt, w->active - 1);	1663	adjustheap ((WT *)timers, timercnt, active);
1132	}	1664	}
		1665	}
1133		1666
1134	w->at = w->repeat;	1667	((WT)w)->at -= mn_now;
1135		1668
1136	ev_stop (EV_A_ (W)w);	1669	ev_stop (EV_A_ (W)w);
1137	}	1670	}
1138		1671
1139	void	1672	void noinline
1140	ev_timer_again (EV_P_ struct ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
1141	{	1674	{
1142	if (ev_is_active (w))	1675	if (ev_is_active (w))
1143	{	1676	{
1144	if (w->repeat)	1677	if (w->repeat)
1145	{	1678	{
1146	w->at = mn_now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
1147	downheap ((WT *)timers, timercnt, w->active - 1);	1680	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1148	}	1681	}
1149	else	1682	else
1150	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1151	}	1684	}
1152	else if (w->repeat)	1685	else if (w->repeat)
		1686	{
		1687	w->at = w->repeat;
1153	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
		1689	}
1154	}	1690	}
1155		1691
1156	void	1692	#if EV_PERIODIC_ENABLE
		1693	void noinline
1157	ev_periodic_start (EV_P_ struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1158	{	1695	{
1159	if (ev_is_active (w))	1696	if (expect_false (ev_is_active (w)))
1160	return;	1697	return;
1161		1698
		1699	if (w->reschedule_cb)
		1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1701	else if (w->interval)
		1702	{
1162	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1163
1164	/* this formula differs from the one in periodic_reify because we do not always round up */	1704	/* this formula differs from the one in periodic_reify because we do not always round up */
1165	if (w->interval)
1166	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1167		1709
1168	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1169	array_needsize (periodics, periodicmax, periodiccnt, );	1711	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1170	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = w;
1171	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap ((WT *)periodics, periodiccnt - 1);
1172	}
1173		1714
1174	void	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1716	}
		1717
		1718	void noinline
1175	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1176	{	1720	{
1177	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1178	if (!ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1179	return;	1723	return;
1180		1724
1181	if (w->active < periodiccnt--)	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1726
		1727	{
		1728	int active = ((W)w)->active;
		1729
		1730	if (expect_true (--active < --periodiccnt))
1182	{	1731	{
1183	periodics [w->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1184	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1733	adjustheap ((WT *)periodics, periodiccnt, active);
1185	}	1734	}
		1735	}
1186		1736
1187	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1188	}	1738	}
1189		1739
1190	void	1740	void noinline
1191	ev_idle_start (EV_P_ struct ev_idle *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1192	{	1742	{
1193	if (ev_is_active (w))	1743	/* TODO: use adjustheap and recalculation */
1194	return;
1195
1196	ev_start (EV_A_ (W)w, ++idlecnt);
1197	array_needsize (idles, idlemax, idlecnt, );
1198	idles [idlecnt - 1] = w;
1199	}
1200
1201	void
1202	ev_idle_stop (EV_P_ struct ev_idle *w)
1203	{
1204	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))
1206	return;
1207
1208	idles [w->active - 1] = idles [--idlecnt];
1209	ev_stop (EV_A_ (W)w);	1744	ev_periodic_stop (EV_A_ w);
		1745	ev_periodic_start (EV_A_ w);
1210	}	1746	}
1211		1747	#endif
1212	void
1213	ev_prepare_start (EV_P_ struct ev_prepare *w)
1214	{
1215	if (ev_is_active (w))
1216	return;
1217
1218	ev_start (EV_A_ (W)w, ++preparecnt);
1219	array_needsize (prepares, preparemax, preparecnt, );
1220	prepares [preparecnt - 1] = w;
1221	}
1222
1223	void
1224	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1225	{
1226	ev_clear_pending (EV_A_ (W)w);
1227	if (ev_is_active (w))
1228	return;
1229
1230	prepares [w->active - 1] = prepares [--preparecnt];
1231	ev_stop (EV_A_ (W)w);
1232	}
1233
1234	void
1235	ev_check_start (EV_P_ struct ev_check *w)
1236	{
1237	if (ev_is_active (w))
1238	return;
1239
1240	ev_start (EV_A_ (W)w, ++checkcnt);
1241	array_needsize (checks, checkmax, checkcnt, );
1242	checks [checkcnt - 1] = w;
1243	}
1244
1245	void
1246	ev_check_stop (EV_P_ struct ev_check *w)
1247	{
1248	ev_clear_pending (EV_A_ (W)w);
1249	if (ev_is_active (w))
1250	return;
1251
1252	checks [w->active - 1] = checks [--checkcnt];
1253	ev_stop (EV_A_ (W)w);
1254	}
1255		1748
1256	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1257	# define SA_RESTART 0	1750	# define SA_RESTART 0
1258	#endif	1751	#endif
1259		1752
1260	void	1753	void noinline
1261	ev_signal_start (EV_P_ struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1262	{	1755	{
1263	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1264	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1265	#endif	1758	#endif
1266	if (ev_is_active (w))	1759	if (expect_false (ev_is_active (w)))
1267	return;	1760	return;
1268		1761
1269	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1270		1763
1271	ev_start (EV_A_ (W)w, 1);	1764	ev_start (EV_A_ (W)w, 1);
1272	array_needsize (signals, signalmax, w->signum, signals_init);	1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1273	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1766	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1274		1767
1275	if (!w->next)	1768	if (!((WL)w)->next)
1276	{	1769	{
		1770	#if _WIN32
		1771	signal (w->signum, sighandler);
		1772	#else
1277	struct sigaction sa;	1773	struct sigaction sa;
1278	sa.sa_handler = sighandler;	1774	sa.sa_handler = sighandler;
1279	sigfillset (&sa.sa_mask);	1775	sigfillset (&sa.sa_mask);
1280	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1776	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1281	sigaction (w->signum, &sa, 0);	1777	sigaction (w->signum, &sa, 0);
		1778	#endif
1282	}	1779	}
1283	}	1780	}
1284		1781
1285	void	1782	void noinline
1286	ev_signal_stop (EV_P_ struct ev_signal *w)	1783	ev_signal_stop (EV_P_ ev_signal *w)
1287	{	1784	{
1288	ev_clear_pending (EV_A_ (W)w);	1785	clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1786	if (expect_false (!ev_is_active (w)))
1290	return;	1787	return;
1291		1788
1292	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1789	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1790	ev_stop (EV_A_ (W)w);
1294		1791
1295	if (!signals [w->signum - 1].head)	1792	if (!signals [w->signum - 1].head)
1296	signal (w->signum, SIG_DFL);	1793	signal (w->signum, SIG_DFL);
1297	}	1794	}
1298		1795
1299	void	1796	void
1300	ev_child_start (EV_P_ struct ev_child *w)	1797	ev_child_start (EV_P_ ev_child *w)
1301	{	1798	{
1302	#if EV_MULTIPLICITY	1799	#if EV_MULTIPLICITY
1303	assert (("child watchers are only supported in the default loop", loop == default_loop));	1800	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304	#endif	1801	#endif
1305	if (ev_is_active (w))	1802	if (expect_false (ev_is_active (w)))
1306	return;	1803	return;
1307		1804
1308	ev_start (EV_A_ (W)w, 1);	1805	ev_start (EV_A_ (W)w, 1);
1309	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1806	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1310	}	1807	}
1311		1808
1312	void	1809	void
1313	ev_child_stop (EV_P_ struct ev_child *w)	1810	ev_child_stop (EV_P_ ev_child *w)
1314	{	1811	{
1315	ev_clear_pending (EV_A_ (W)w);	1812	clear_pending (EV_A_ (W)w);
1316	if (ev_is_active (w))	1813	if (expect_false (!ev_is_active (w)))
1317	return;	1814	return;
1318		1815
1319	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1816	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1320	ev_stop (EV_A_ (W)w);	1817	ev_stop (EV_A_ (W)w);
1321	}	1818	}
1322		1819
		1820	#if EV_STAT_ENABLE
		1821
		1822	# ifdef _WIN32
		1823	# undef lstat
		1824	# define lstat(a,b) _stati64 (a,b)
		1825	# endif
		1826
		1827	#define DEF_STAT_INTERVAL 5.0074891
		1828	#define MIN_STAT_INTERVAL 0.1074891
		1829
		1830	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1831
		1832	#if EV_USE_INOTIFY
		1833	# define EV_INOTIFY_BUFSIZE 8192
		1834
		1835	static void noinline
		1836	infy_add (EV_P_ ev_stat *w)
		1837	{
		1838	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);
		1839
		1840	if (w->wd < 0)
		1841	{
		1842	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1843
		1844	/* monitor some parent directory for speedup hints */
		1845	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1846	{
		1847	char path [4096];
		1848	strcpy (path, w->path);
		1849
		1850	do
		1851	{
		1852	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1853	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1854
		1855	char *pend = strrchr (path, '/');
		1856
		1857	if (!pend)
		1858	break; /* whoops, no '/', complain to your admin */
		1859
		1860	*pend = 0;
		1861	w->wd = inotify_add_watch (fs_fd, path, mask);
		1862	}
		1863	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1864	}
		1865	}
		1866	else
		1867	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1868
		1869	if (w->wd >= 0)
		1870	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1871	}
		1872
		1873	static void noinline
		1874	infy_del (EV_P_ ev_stat *w)
		1875	{
		1876	int slot;
		1877	int wd = w->wd;
		1878
		1879	if (wd < 0)
		1880	return;
		1881
		1882	w->wd = -2;
		1883	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1884	wlist_del (&fs_hash [slot].head, (WL)w);
		1885
		1886	/* remove this watcher, if others are watching it, they will rearm */
		1887	inotify_rm_watch (fs_fd, wd);
		1888	}
		1889
		1890	static void noinline
		1891	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1892	{
		1893	if (slot < 0)
		1894	/* overflow, need to check for all hahs slots */
		1895	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1896	infy_wd (EV_A_ slot, wd, ev);
		1897	else
		1898	{
		1899	WL w_;
		1900
		1901	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1902	{
		1903	ev_stat *w = (ev_stat *)w_;
		1904	w_ = w_->next; /* lets us remove this watcher and all before it */
		1905
		1906	if (w->wd == wd || wd == -1)
		1907	{
		1908	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1909	{
		1910	w->wd = -1;
		1911	infy_add (EV_A_ w); /* re-add, no matter what */
		1912	}
		1913
		1914	stat_timer_cb (EV_A_ &w->timer, 0);
		1915	}
		1916	}
		1917	}
		1918	}
		1919
		1920	static void
		1921	infy_cb (EV_P_ ev_io *w, int revents)
		1922	{
		1923	char buf [EV_INOTIFY_BUFSIZE];
		1924	struct inotify_event *ev = (struct inotify_event *)buf;
		1925	int ofs;
		1926	int len = read (fs_fd, buf, sizeof (buf));
		1927
		1928	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1929	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1930	}
		1931
		1932	void inline_size
		1933	infy_init (EV_P)
		1934	{
		1935	if (fs_fd != -2)
		1936	return;
		1937
		1938	fs_fd = inotify_init ();
		1939
		1940	if (fs_fd >= 0)
		1941	{
		1942	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1943	ev_set_priority (&fs_w, EV_MAXPRI);
		1944	ev_io_start (EV_A_ &fs_w);
		1945	}
		1946	}
		1947
		1948	void inline_size
		1949	infy_fork (EV_P)
		1950	{
		1951	int slot;
		1952
		1953	if (fs_fd < 0)
		1954	return;
		1955
		1956	close (fs_fd);
		1957	fs_fd = inotify_init ();
		1958
		1959	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1960	{
		1961	WL w_ = fs_hash [slot].head;
		1962	fs_hash [slot].head = 0;
		1963
		1964	while (w_)
		1965	{
		1966	ev_stat *w = (ev_stat *)w_;
		1967	w_ = w_->next; /* lets us add this watcher */
		1968
		1969	w->wd = -1;
		1970
		1971	if (fs_fd >= 0)
		1972	infy_add (EV_A_ w); /* re-add, no matter what */
		1973	else
		1974	ev_timer_start (EV_A_ &w->timer);
		1975	}
		1976
		1977	}
		1978	}
		1979
		1980	#endif
		1981
		1982	void
		1983	ev_stat_stat (EV_P_ ev_stat *w)
		1984	{
		1985	if (lstat (w->path, &w->attr) < 0)
		1986	w->attr.st_nlink = 0;
		1987	else if (!w->attr.st_nlink)
		1988	w->attr.st_nlink = 1;
		1989	}
		1990
		1991	static void noinline
		1992	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1993	{
		1994	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1995
		1996	/* we copy this here each the time so that */
		1997	/* prev has the old value when the callback gets invoked */
		1998	w->prev = w->attr;
		1999	ev_stat_stat (EV_A_ w);
		2000
		2001	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2002	if (
		2003	w->prev.st_dev != w->attr.st_dev
		2004	|| w->prev.st_ino != w->attr.st_ino
		2005	|| w->prev.st_mode != w->attr.st_mode
		2006	|| w->prev.st_nlink != w->attr.st_nlink
		2007	|| w->prev.st_uid != w->attr.st_uid
		2008	|| w->prev.st_gid != w->attr.st_gid
		2009	|| w->prev.st_rdev != w->attr.st_rdev
		2010	|| w->prev.st_size != w->attr.st_size
		2011	|| w->prev.st_atime != w->attr.st_atime
		2012	|| w->prev.st_mtime != w->attr.st_mtime
		2013	|| w->prev.st_ctime != w->attr.st_ctime
		2014	) {
		2015	#if EV_USE_INOTIFY
		2016	infy_del (EV_A_ w);
		2017	infy_add (EV_A_ w);
		2018	ev_stat_stat (EV_A_ w); /* avoid race... */
		2019	#endif
		2020
		2021	ev_feed_event (EV_A_ w, EV_STAT);
		2022	}
		2023	}
		2024
		2025	void
		2026	ev_stat_start (EV_P_ ev_stat *w)
		2027	{
		2028	if (expect_false (ev_is_active (w)))
		2029	return;
		2030
		2031	/* since we use memcmp, we need to clear any padding data etc. */
		2032	memset (&w->prev, 0, sizeof (ev_statdata));
		2033	memset (&w->attr, 0, sizeof (ev_statdata));
		2034
		2035	ev_stat_stat (EV_A_ w);
		2036
		2037	if (w->interval < MIN_STAT_INTERVAL)
		2038	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2039
		2040	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2041	ev_set_priority (&w->timer, ev_priority (w));
		2042
		2043	#if EV_USE_INOTIFY
		2044	infy_init (EV_A);
		2045
		2046	if (fs_fd >= 0)
		2047	infy_add (EV_A_ w);
		2048	else
		2049	#endif
		2050	ev_timer_start (EV_A_ &w->timer);
		2051
		2052	ev_start (EV_A_ (W)w, 1);
		2053	}
		2054
		2055	void
		2056	ev_stat_stop (EV_P_ ev_stat *w)
		2057	{
		2058	clear_pending (EV_A_ (W)w);
		2059	if (expect_false (!ev_is_active (w)))
		2060	return;
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_del (EV_A_ w);
		2064	#endif
		2065	ev_timer_stop (EV_A_ &w->timer);
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	}
		2069	#endif
		2070
		2071	#if EV_IDLE_ENABLE
		2072	void
		2073	ev_idle_start (EV_P_ ev_idle *w)
		2074	{
		2075	if (expect_false (ev_is_active (w)))
		2076	return;
		2077
		2078	pri_adjust (EV_A_ (W)w);
		2079
		2080	{
		2081	int active = ++idlecnt [ABSPRI (w)];
		2082
		2083	++idleall;
		2084	ev_start (EV_A_ (W)w, active);
		2085
		2086	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2087	idles [ABSPRI (w)][active - 1] = w;
		2088	}
		2089	}
		2090
		2091	void
		2092	ev_idle_stop (EV_P_ ev_idle *w)
		2093	{
		2094	clear_pending (EV_A_ (W)w);
		2095	if (expect_false (!ev_is_active (w)))
		2096	return;
		2097
		2098	{
		2099	int active = ((W)w)->active;
		2100
		2101	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2102	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2103
		2104	ev_stop (EV_A_ (W)w);
		2105	--idleall;
		2106	}
		2107	}
		2108	#endif
		2109
		2110	void
		2111	ev_prepare_start (EV_P_ ev_prepare *w)
		2112	{
		2113	if (expect_false (ev_is_active (w)))
		2114	return;
		2115
		2116	ev_start (EV_A_ (W)w, ++preparecnt);
		2117	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2118	prepares [preparecnt - 1] = w;
		2119	}
		2120
		2121	void
		2122	ev_prepare_stop (EV_P_ ev_prepare *w)
		2123	{
		2124	clear_pending (EV_A_ (W)w);
		2125	if (expect_false (!ev_is_active (w)))
		2126	return;
		2127
		2128	{
		2129	int active = ((W)w)->active;
		2130	prepares [active - 1] = prepares [--preparecnt];
		2131	((W)prepares [active - 1])->active = active;
		2132	}
		2133
		2134	ev_stop (EV_A_ (W)w);
		2135	}
		2136
		2137	void
		2138	ev_check_start (EV_P_ ev_check *w)
		2139	{
		2140	if (expect_false (ev_is_active (w)))
		2141	return;
		2142
		2143	ev_start (EV_A_ (W)w, ++checkcnt);
		2144	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2145	checks [checkcnt - 1] = w;
		2146	}
		2147
		2148	void
		2149	ev_check_stop (EV_P_ ev_check *w)
		2150	{
		2151	clear_pending (EV_A_ (W)w);
		2152	if (expect_false (!ev_is_active (w)))
		2153	return;
		2154
		2155	{
		2156	int active = ((W)w)->active;
		2157	checks [active - 1] = checks [--checkcnt];
		2158	((W)checks [active - 1])->active = active;
		2159	}
		2160
		2161	ev_stop (EV_A_ (W)w);
		2162	}
		2163
		2164	#if EV_EMBED_ENABLE
		2165	void noinline
		2166	ev_embed_sweep (EV_P_ ev_embed *w)
		2167	{
		2168	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2169	}
		2170
		2171	static void
		2172	embed_cb (EV_P_ ev_io *io, int revents)
		2173	{
		2174	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2175
		2176	if (ev_cb (w))
		2177	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2178	else
		2179	ev_embed_sweep (loop, w);
		2180	}
		2181
		2182	void
		2183	ev_embed_start (EV_P_ ev_embed *w)
		2184	{
		2185	if (expect_false (ev_is_active (w)))
		2186	return;
		2187
		2188	{
		2189	struct ev_loop *loop = w->loop;
		2190	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2191	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2192	}
		2193
		2194	ev_set_priority (&w->io, ev_priority (w));
		2195	ev_io_start (EV_A_ &w->io);
		2196
		2197	ev_start (EV_A_ (W)w, 1);
		2198	}
		2199
		2200	void
		2201	ev_embed_stop (EV_P_ ev_embed *w)
		2202	{
		2203	clear_pending (EV_A_ (W)w);
		2204	if (expect_false (!ev_is_active (w)))
		2205	return;
		2206
		2207	ev_io_stop (EV_A_ &w->io);
		2208
		2209	ev_stop (EV_A_ (W)w);
		2210	}
		2211	#endif
		2212
		2213	#if EV_FORK_ENABLE
		2214	void
		2215	ev_fork_start (EV_P_ ev_fork *w)
		2216	{
		2217	if (expect_false (ev_is_active (w)))
		2218	return;
		2219
		2220	ev_start (EV_A_ (W)w, ++forkcnt);
		2221	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2222	forks [forkcnt - 1] = w;
		2223	}
		2224
		2225	void
		2226	ev_fork_stop (EV_P_ ev_fork *w)
		2227	{
		2228	clear_pending (EV_A_ (W)w);
		2229	if (expect_false (!ev_is_active (w)))
		2230	return;
		2231
		2232	{
		2233	int active = ((W)w)->active;
		2234	forks [active - 1] = forks [--forkcnt];
		2235	((W)forks [active - 1])->active = active;
		2236	}
		2237
		2238	ev_stop (EV_A_ (W)w);
		2239	}
		2240	#endif
		2241
1323	/*****************************************************************************/	2242	/*****************************************************************************/
1324		2243
1325	struct ev_once	2244	struct ev_once
1326	{	2245	{
1327	struct ev_io io;	2246	ev_io io;
1328	struct ev_timer to;	2247	ev_timer to;
1329	void (*cb)(int revents, void *arg);	2248	void (*cb)(int revents, void *arg);
1330	void *arg;	2249	void *arg;
1331	};	2250	};
1332		2251
1333	static void	2252	static void
…		…
1336	void (*cb)(int revents, void *arg) = once->cb;	2255	void (*cb)(int revents, void *arg) = once->cb;
1337	void *arg = once->arg;	2256	void *arg = once->arg;
1338		2257
1339	ev_io_stop (EV_A_ &once->io);	2258	ev_io_stop (EV_A_ &once->io);
1340	ev_timer_stop (EV_A_ &once->to);	2259	ev_timer_stop (EV_A_ &once->to);
1341	free (once);	2260	ev_free (once);
1342		2261
1343	cb (revents, arg);	2262	cb (revents, arg);
1344	}	2263	}
1345		2264
1346	static void	2265	static void
1347	once_cb_io (EV_P_ struct ev_io *w, int revents)	2266	once_cb_io (EV_P_ ev_io *w, int revents)
1348	{	2267	{
1349	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2268	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1350	}	2269	}
1351		2270
1352	static void	2271	static void
1353	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2272	once_cb_to (EV_P_ ev_timer *w, int revents)
1354	{	2273	{
1355	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1356	}	2275	}
1357		2276
1358	void	2277	void
1359	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2278	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1360	{	2279	{
1361	struct ev_once *once = malloc (sizeof (struct ev_once));	2280	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1362		2281
1363	if (!once)	2282	if (expect_false (!once))
		2283	{
1364	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2284	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1365	else	2285	return;
1366	{	2286	}
		2287
1367	once->cb = cb;	2288	once->cb = cb;
1368	once->arg = arg;	2289	once->arg = arg;
1369		2290
1370	ev_watcher_init (&once->io, once_cb_io);	2291	ev_init (&once->io, once_cb_io);
1371	if (fd >= 0)	2292	if (fd >= 0)
1372	{	2293	{
1373	ev_io_set (&once->io, fd, events);	2294	ev_io_set (&once->io, fd, events);
1374	ev_io_start (EV_A_ &once->io);	2295	ev_io_start (EV_A_ &once->io);
1375	}	2296	}
1376		2297
1377	ev_watcher_init (&once->to, once_cb_to);	2298	ev_init (&once->to, once_cb_to);
1378	if (timeout >= 0.)	2299	if (timeout >= 0.)
1379	{	2300	{
1380	ev_timer_set (&once->to, timeout, 0.);	2301	ev_timer_set (&once->to, timeout, 0.);
1381	ev_timer_start (EV_A_ &once->to);	2302	ev_timer_start (EV_A_ &once->to);
1382	}
1383	}	2303	}
1384	}	2304	}
1385		2305
		2306	#ifdef __cplusplus
		2307	}
		2308	#endif
		2309

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