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Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 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
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
40	# define EV_USE_SELECT 1	61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
		64	# endif
41	# endif	65	# endif
42		66
43	# if HAVE_POLL && HAVE_POLL_H	67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
44	# define EV_USE_POLL 1	69	# define EV_USE_SELECT 1
		70	# else
		71	# define EV_USE_SELECT 0
		72	# endif
45	# endif	73	# endif
46		74
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_POLL 1
		78	# else
		79	# define EV_USE_POLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_EPOLL
		84	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		85	# define EV_USE_EPOLL 1
		86	# else
		87	# define EV_USE_EPOLL 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	93	# define EV_USE_KQUEUE 1
		94	# else
		95	# define EV_USE_KQUEUE 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_PORT
		100	# if HAVE_PORT_H && HAVE_PORT_CREATE
		101	# define EV_USE_PORT 1
		102	# else
		103	# define EV_USE_PORT 0
		104	# endif
		105	# endif
		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
53	# endif	113	# endif
54		114
55	#endif	115	#endif
56		116
57	#include <math.h>	117	#include <math.h>
…		…
64	#include <assert.h>	124	#include <assert.h>
65	#include <errno.h>	125	#include <errno.h>
66	#include <sys/types.h>	126	#include <sys/types.h>
67	#include <time.h>	127	#include <time.h>
68		128
69	#ifndef PERL
70	# include <signal.h>	129	#include <signal.h>
71	#endif
72		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
		136
73	#ifndef WIN32	137	#ifndef _WIN32
74	# include <unistd.h>
75	# include <sys/time.h>	138	# include <sys/time.h>
76	# include <sys/wait.h>	139	# include <sys/wait.h>
		140	# include <unistd.h>
		141	#else
		142	# define WIN32_LEAN_AND_MEAN
		143	# include <windows.h>
		144	# ifndef EV_SELECT_IS_WINSOCKET
		145	# define EV_SELECT_IS_WINSOCKET 1
77	#endif	146	# endif
		147	#endif
		148
78	/**/	149	/**/
79		150
80	#ifndef EV_USE_MONOTONIC	151	#ifndef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 1	152	# define EV_USE_MONOTONIC 0
		153	#endif
		154
		155	#ifndef EV_USE_REALTIME
		156	# define EV_USE_REALTIME 0
		157	#endif
		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
82	#endif	161	#endif
83		162
84	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
85	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
86	#endif	165	#endif
87		166
88	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
89	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	168	# ifdef _WIN32
		169	# define EV_USE_POLL 0
		170	# else
		171	# define EV_USE_POLL 1
		172	# endif
90	#endif	173	#endif
91		174
92	#ifndef EV_USE_EPOLL	175	#ifndef EV_USE_EPOLL
93	# define EV_USE_EPOLL 0	176	# define EV_USE_EPOLL 0
94	#endif	177	#endif
95		178
96	#ifndef EV_USE_KQUEUE	179	#ifndef EV_USE_KQUEUE
97	# define EV_USE_KQUEUE 0	180	# define EV_USE_KQUEUE 0
98	#endif	181	#endif
99		182
		183	#ifndef EV_USE_PORT
		184	# define EV_USE_PORT 0
		185	#endif
		186
100	#ifndef EV_USE_WIN32	187	#ifndef EV_USE_INOTIFY
101	# ifdef WIN32	188	# define EV_USE_INOTIFY 0
102	# define EV_USE_WIN32 0 /* it does not exist, use select */	189	#endif
103	# undef EV_USE_SELECT	190
104	# define EV_USE_SELECT 1	191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
105	# else	194	# else
106	# define EV_USE_WIN32 0	195	# define EV_PID_HASHSIZE 16
107	# endif	196	# endif
108	#endif	197	#endif
109		198
110	#ifndef EV_USE_REALTIME	199	#ifndef EV_INOTIFY_HASHSIZE
111	# define EV_USE_REALTIME 1	200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
112	#endif	205	#endif
113		206
114	/**/	207	/**/
115		208
116	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
…		…
121	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
124	#endif	217	#endif
125		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
		234	#if EV_SELECT_IS_WINSOCKET
		235	# include <winsock.h>
		236	#endif
		237
126	/**/	238	/**/
127		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
129	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
130	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
131	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
132		253
133	#include "ev.h"
134
135	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
136	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
137	# define inline inline	256	# define noinline __attribute__ ((noinline))
138	#else	257	#else
139	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
140	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
141	#endif	263	#endif
142		264
143	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
144	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
145		274
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
148		277
		278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
		280
149	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
152		284
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	285	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		286
155	#if WIN32	287	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	288	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	289	#endif
160		290
161	/*****************************************************************************/	291	/*****************************************************************************/
162		292
163	static void (*syserr_cb)(const char *msg);	293	static void (*syserr_cb)(const char *msg);
164		294
		295	void
165	void ev_set_syserr_cb (void (*cb)(const char *msg))	296	ev_set_syserr_cb (void (*cb)(const char *msg))
166	{	297	{
167	syserr_cb = cb;	298	syserr_cb = cb;
168	}	299	}
169		300
170	static void	301	static void noinline
171	syserr (const char *msg)	302	syserr (const char *msg)
172	{	303	{
173	if (!msg)	304	if (!msg)
174	msg = "(libev) system error";	305	msg = "(libev) system error";
175		306
…		…
182	}	313	}
183	}	314	}
184		315
185	static void *(*alloc)(void *ptr, long size);	316	static void *(*alloc)(void *ptr, long size);
186		317
		318	void
187	void ev_set_allocator (void *(*cb)(void *ptr, long size))	319	ev_set_allocator (void *(*cb)(void *ptr, long size))
188	{	320	{
189	alloc = cb;	321	alloc = cb;
190	}	322	}
191		323
192	static void *	324	inline_speed void *
193	ev_realloc (void *ptr, long size)	325	ev_realloc (void *ptr, long size)
194	{	326	{
195	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	327	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
196		328
197	if (!ptr && size)	329	if (!ptr && size)
…		…
211	typedef struct	343	typedef struct
212	{	344	{
213	WL head;	345	WL head;
214	unsigned char events;	346	unsigned char events;
215	unsigned char reify;	347	unsigned char reify;
		348	#if EV_SELECT_IS_WINSOCKET
		349	SOCKET handle;
		350	#endif
216	} ANFD;	351	} ANFD;
217		352
218	typedef struct	353	typedef struct
219	{	354	{
220	W w;	355	W w;
221	int events;	356	int events;
222	} ANPENDING;	357	} ANPENDING;
223		358
		359	#if EV_USE_INOTIFY
		360	typedef struct
		361	{
		362	WL head;
		363	} ANFS;
		364	#endif
		365
224	#if EV_MULTIPLICITY	366	#if EV_MULTIPLICITY
225		367
226	struct ev_loop	368	struct ev_loop
227	{	369	{
		370	ev_tstamp ev_rt_now;
		371	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	372	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	373	#include "ev_vars.h"
230	};
231	# undef VAR	374	#undef VAR
		375	};
232	# include "ev_wrap.h"	376	#include "ev_wrap.h"
		377
		378	static struct ev_loop default_loop_struct;
		379	struct ev_loop *ev_default_loop_ptr;
233		380
234	#else	381	#else
235		382
		383	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	384	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	385	#include "ev_vars.h"
238	# undef VAR	386	#undef VAR
		387
		388	static int ev_default_loop_ptr;
239		389
240	#endif	390	#endif
241		391
242	/*****************************************************************************/	392	/*****************************************************************************/
243		393
244	inline ev_tstamp	394	ev_tstamp
245	ev_time (void)	395	ev_time (void)
246	{	396	{
247	#if EV_USE_REALTIME	397	#if EV_USE_REALTIME
248	struct timespec ts;	398	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	399	clock_gettime (CLOCK_REALTIME, &ts);
…		…
253	gettimeofday (&tv, 0);	403	gettimeofday (&tv, 0);
254	return tv.tv_sec + tv.tv_usec * 1e-6;	404	return tv.tv_sec + tv.tv_usec * 1e-6;
255	#endif	405	#endif
256	}	406	}
257		407
258	inline ev_tstamp	408	ev_tstamp inline_size
259	get_clock (void)	409	get_clock (void)
260	{	410	{
261	#if EV_USE_MONOTONIC	411	#if EV_USE_MONOTONIC
262	if (expect_true (have_monotonic))	412	if (expect_true (have_monotonic))
263	{	413	{
…		…
268	#endif	418	#endif
269		419
270	return ev_time ();	420	return ev_time ();
271	}	421	}
272		422
		423	#if EV_MULTIPLICITY
273	ev_tstamp	424	ev_tstamp
274	ev_now (EV_P)	425	ev_now (EV_P)
275	{	426	{
276	return rt_now;	427	return ev_rt_now;
277	}	428	}
		429	#endif
278		430
279	#define array_roundsize(base,n) ((n) | 4 & ~3)	431	void
		432	ev_sleep (ev_tstamp delay)
		433	{
		434	if (delay > 0.)
		435	{
		436	#if EV_USE_NANOSLEEP
		437	struct timespec ts;
280		438
		439	ts.tv_sec = (time_t)delay;
		440	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		441
		442	nanosleep (&ts, 0);
		443	#elif defined(_WIN32)
		444	Sleep (delay * 1e3);
		445	#else
		446	struct timeval tv;
		447
		448	tv.tv_sec = (time_t)delay;
		449	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		450
		451	select (0, 0, 0, 0, &tv);
		452	#endif
		453	}
		454	}
		455
		456	/*****************************************************************************/
		457
		458	int inline_size
		459	array_nextsize (int elem, int cur, int cnt)
		460	{
		461	int ncur = cur + 1;
		462
		463	do
		464	ncur <<= 1;
		465	while (cnt > ncur);
		466
		467	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		468	if (elem * ncur > 4096)
		469	{
		470	ncur *= elem;
		471	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		472	ncur = ncur - sizeof (void *) * 4;
		473	ncur /= elem;
		474	}
		475
		476	return ncur;
		477	}
		478
		479	static noinline void *
		480	array_realloc (int elem, void *base, int *cur, int cnt)
		481	{
		482	*cur = array_nextsize (elem, *cur, cnt);
		483	return ev_realloc (base, elem * *cur);
		484	}
		485
281	#define array_needsize(base,cur,cnt,init) \	486	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	487	if (expect_false ((cnt) > (cur))) \
283	{ \	488	{ \
284	int newcnt = cur; \	489	int ocur_ = (cur); \
285	do \	490	(base) = (type *)array_realloc \
286	{ \	491	(sizeof (type), (base), &(cur), (cnt)); \
287	newcnt = array_roundsize (base, newcnt << 1); \	492	init ((base) + (ocur_), (cur) - ocur_); \
288	} \
289	while ((cnt) > newcnt); \
290	\
291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
292	init (base + cur, newcnt - cur); \
293	cur = newcnt; \
294	}	493	}
295		494
		495	#if 0
296	#define array_slim(stem) \	496	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	497	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	498	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	499	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	500	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	501	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302	}	502	}
303		503	#endif
304	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306	#define array_free_microshit(stem) \
307	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308		504
309	#define array_free(stem, idx) \	505	#define array_free(stem, idx) \
310	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	506	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
311		507
312	/*****************************************************************************/	508	/*****************************************************************************/
313		509
314	static void	510	void noinline
		511	ev_feed_event (EV_P_ void *w, int revents)
		512	{
		513	W w_ = (W)w;
		514	int pri = ABSPRI (w_);
		515
		516	if (expect_false (w_->pending))
		517	pendings [pri][w_->pending - 1].events |= revents;
		518	else
		519	{
		520	w_->pending = ++pendingcnt [pri];
		521	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		522	pendings [pri][w_->pending - 1].w = w_;
		523	pendings [pri][w_->pending - 1].events = revents;
		524	}
		525	}
		526
		527	void inline_speed
		528	queue_events (EV_P_ W *events, int eventcnt, int type)
		529	{
		530	int i;
		531
		532	for (i = 0; i < eventcnt; ++i)
		533	ev_feed_event (EV_A_ events [i], type);
		534	}
		535
		536	/*****************************************************************************/
		537
		538	void inline_size
315	anfds_init (ANFD *base, int count)	539	anfds_init (ANFD *base, int count)
316	{	540	{
317	while (count--)	541	while (count--)
318	{	542	{
319	base->head = 0;	543	base->head = 0;
…		…
322		546
323	++base;	547	++base;
324	}	548	}
325	}	549	}
326		550
327	static void	551	void inline_speed
328	event (EV_P_ W w, int events)
329	{
330	if (w->pending)
331	{
332	pendings [ABSPRI (w)][w->pending - 1].events |= events;
333	return;
334	}
335
336	w->pending = ++pendingcnt [ABSPRI (w)];
337	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
338	pendings [ABSPRI (w)][w->pending - 1].w = w;
339	pendings [ABSPRI (w)][w->pending - 1].events = events;
340	}
341
342	static void
343	queue_events (EV_P_ W *events, int eventcnt, int type)
344	{
345	int i;
346
347	for (i = 0; i < eventcnt; ++i)
348	event (EV_A_ events [i], type);
349	}
350
351	static void
352	fd_event (EV_P_ int fd, int events)	552	fd_event (EV_P_ int fd, int revents)
353	{	553	{
354	ANFD *anfd = anfds + fd;	554	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	555	ev_io *w;
356		556
357	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	557	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
358	{	558	{
359	int ev = w->events & events;	559	int ev = w->events & revents;
360		560
361	if (ev)	561	if (ev)
362	event (EV_A_ (W)w, ev);	562	ev_feed_event (EV_A_ (W)w, ev);
363	}	563	}
364	}	564	}
365		565
366	/*****************************************************************************/	566	void
		567	ev_feed_fd_event (EV_P_ int fd, int revents)
		568	{
		569	if (fd >= 0 && fd < anfdmax)
		570	fd_event (EV_A_ fd, revents);
		571	}
367		572
368	static void	573	void inline_size
369	fd_reify (EV_P)	574	fd_reify (EV_P)
370	{	575	{
371	int i;	576	int i;
372		577
373	for (i = 0; i < fdchangecnt; ++i)	578	for (i = 0; i < fdchangecnt; ++i)
374	{	579	{
375	int fd = fdchanges [i];	580	int fd = fdchanges [i];
376	ANFD *anfd = anfds + fd;	581	ANFD *anfd = anfds + fd;
377	struct ev_io *w;	582	ev_io *w;
378		583
379	int events = 0;	584	unsigned char events = 0;
380		585
381	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	586	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
382	events |= w->events;	587	events |= (unsigned char)w->events;
383		588
		589	#if EV_SELECT_IS_WINSOCKET
		590	if (events)
		591	{
		592	unsigned long argp;
		593	anfd->handle = _get_osfhandle (fd);
		594	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		595	}
		596	#endif
		597
		598	{
		599	unsigned char o_events = anfd->events;
		600	unsigned char o_reify = anfd->reify;
		601
384	anfd->reify = 0;	602	anfd->reify = 0;
385
386	method_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	603	anfd->events = events;
		604
		605	if (o_events != events || o_reify & EV_IOFDSET)
		606	backend_modify (EV_A_ fd, o_events, events);
		607	}
388	}	608	}
389		609
390	fdchangecnt = 0;	610	fdchangecnt = 0;
391	}	611	}
392		612
393	static void	613	void inline_size
394	fd_change (EV_P_ int fd)	614	fd_change (EV_P_ int fd, int flags)
395	{	615	{
396	if (anfds [fd].reify)	616	unsigned char reify = anfds [fd].reify;
397	return;
398
399	anfds [fd].reify = 1;	617	anfds [fd].reify |= flags;
400		618
		619	if (expect_true (!reify))
		620	{
401	++fdchangecnt;	621	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	622	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	623	fdchanges [fdchangecnt - 1] = fd;
		624	}
404	}	625	}
405		626
406	static void	627	void inline_speed
407	fd_kill (EV_P_ int fd)	628	fd_kill (EV_P_ int fd)
408	{	629	{
409	struct ev_io *w;	630	ev_io *w;
410		631
411	while ((w = (struct ev_io *)anfds [fd].head))	632	while ((w = (ev_io *)anfds [fd].head))
412	{	633	{
413	ev_io_stop (EV_A_ w);	634	ev_io_stop (EV_A_ w);
414	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	635	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
415	}	636	}
416	}	637	}
417		638
418	static int	639	int inline_size
419	fd_valid (int fd)	640	fd_valid (int fd)
420	{	641	{
421	#ifdef WIN32	642	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	643	return _get_osfhandle (fd) != -1;
423	#else	644	#else
424	return fcntl (fd, F_GETFD) != -1;	645	return fcntl (fd, F_GETFD) != -1;
425	#endif	646	#endif
426	}	647	}
427		648
428	/* called on EBADF to verify fds */	649	/* called on EBADF to verify fds */
429	static void	650	static void noinline
430	fd_ebadf (EV_P)	651	fd_ebadf (EV_P)
431	{	652	{
432	int fd;	653	int fd;
433		654
434	for (fd = 0; fd < anfdmax; ++fd)	655	for (fd = 0; fd < anfdmax; ++fd)
…		…
436	if (!fd_valid (fd) == -1 && errno == EBADF)	657	if (!fd_valid (fd) == -1 && errno == EBADF)
437	fd_kill (EV_A_ fd);	658	fd_kill (EV_A_ fd);
438	}	659	}
439		660
440	/* called on ENOMEM in select/poll to kill some fds and retry */	661	/* called on ENOMEM in select/poll to kill some fds and retry */
441	static void	662	static void noinline
442	fd_enomem (EV_P)	663	fd_enomem (EV_P)
443	{	664	{
444	int fd;	665	int fd;
445		666
446	for (fd = anfdmax; fd--; )	667	for (fd = anfdmax; fd--; )
…		…
449	fd_kill (EV_A_ fd);	670	fd_kill (EV_A_ fd);
450	return;	671	return;
451	}	672	}
452	}	673	}
453		674
454	/* usually called after fork if method needs to re-arm all fds from scratch */	675	/* usually called after fork if backend needs to re-arm all fds from scratch */
455	static void	676	static void noinline
456	fd_rearm_all (EV_P)	677	fd_rearm_all (EV_P)
457	{	678	{
458	int fd;	679	int fd;
459		680
460	/* this should be highly optimised to not do anything but set a flag */
461	for (fd = 0; fd < anfdmax; ++fd)	681	for (fd = 0; fd < anfdmax; ++fd)
462	if (anfds [fd].events)	682	if (anfds [fd].events)
463	{	683	{
464	anfds [fd].events = 0;	684	anfds [fd].events = 0;
465	fd_change (EV_A_ fd);	685	fd_change (EV_A_ fd, EV_IOFDSET | 1);
466	}	686	}
467	}	687	}
468		688
469	/*****************************************************************************/	689	/*****************************************************************************/
470		690
471	static void	691	void inline_speed
472	upheap (WT *heap, int k)	692	upheap (WT *heap, int k)
473	{	693	{
474	WT w = heap [k];	694	WT w = heap [k];
475		695
476	while (k && heap [k >> 1]->at > w->at)	696	while (k)
477	{	697	{
		698	int p = (k - 1) >> 1;
		699
		700	if (heap [p]->at <= w->at)
		701	break;
		702
478	heap [k] = heap [k >> 1];	703	heap [k] = heap [p];
479	((W)heap [k])->active = k + 1;	704	((W)heap [k])->active = k + 1;
480	k >>= 1;	705	k = p;
481	}	706	}
482		707
483	heap [k] = w;	708	heap [k] = w;
484	((W)heap [k])->active = k + 1;	709	((W)heap [k])->active = k + 1;
485
486	}	710	}
487		711
488	static void	712	void inline_speed
489	downheap (WT *heap, int N, int k)	713	downheap (WT *heap, int N, int k)
490	{	714	{
491	WT w = heap [k];	715	WT w = heap [k];
492		716
493	while (k < (N >> 1))	717	for (;;)
494	{	718	{
495	int j = k << 1;	719	int c = (k << 1) + 1;
496		720
497	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	721	if (c >= N)
498	++j;
499
500	if (w->at <= heap [j]->at)
501	break;	722	break;
502		723
		724	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		725	? 1 : 0;
		726
		727	if (w->at <= heap [c]->at)
		728	break;
		729
503	heap [k] = heap [j];	730	heap [k] = heap [c];
504	((W)heap [k])->active = k + 1;	731	((W)heap [k])->active = k + 1;
		732
505	k = j;	733	k = c;
506	}	734	}
507		735
508	heap [k] = w;	736	heap [k] = w;
509	((W)heap [k])->active = k + 1;	737	((W)heap [k])->active = k + 1;
		738	}
		739
		740	void inline_size
		741	adjustheap (WT *heap, int N, int k)
		742	{
		743	upheap (heap, k);
		744	downheap (heap, N, k);
510	}	745	}
511		746
512	/*****************************************************************************/	747	/*****************************************************************************/
513		748
514	typedef struct	749	typedef struct
…		…
520	static ANSIG *signals;	755	static ANSIG *signals;
521	static int signalmax;	756	static int signalmax;
522		757
523	static int sigpipe [2];	758	static int sigpipe [2];
524	static sig_atomic_t volatile gotsig;	759	static sig_atomic_t volatile gotsig;
525	static struct ev_io sigev;	760	static ev_io sigev;
526		761
527	static void	762	void inline_size
528	signals_init (ANSIG *base, int count)	763	signals_init (ANSIG *base, int count)
529	{	764	{
530	while (count--)	765	while (count--)
531	{	766	{
532	base->head = 0;	767	base->head = 0;
…		…
537	}	772	}
538		773
539	static void	774	static void
540	sighandler (int signum)	775	sighandler (int signum)
541	{	776	{
542	#if WIN32	777	#if _WIN32
543	signal (signum, sighandler);	778	signal (signum, sighandler);
544	#endif	779	#endif
545		780
546	signals [signum - 1].gotsig = 1;	781	signals [signum - 1].gotsig = 1;
547		782
…		…
552	write (sigpipe [1], &signum, 1);	787	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	788	errno = old_errno;
554	}	789	}
555	}	790	}
556		791
		792	void noinline
		793	ev_feed_signal_event (EV_P_ int signum)
		794	{
		795	WL w;
		796
		797	#if EV_MULTIPLICITY
		798	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		799	#endif
		800
		801	--signum;
		802
		803	if (signum < 0 || signum >= signalmax)
		804	return;
		805
		806	signals [signum].gotsig = 0;
		807
		808	for (w = signals [signum].head; w; w = w->next)
		809	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		810	}
		811
557	static void	812	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	813	sigcb (EV_P_ ev_io *iow, int revents)
559	{	814	{
560	WL w;
561	int signum;	815	int signum;
562		816
563	read (sigpipe [0], &revents, 1);	817	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	818	gotsig = 0;
565		819
566	for (signum = signalmax; signum--; )	820	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	821	if (signals [signum].gotsig)
568	{	822	ev_feed_signal_event (EV_A_ signum + 1);
569	signals [signum].gotsig = 0;
570
571	for (w = signals [signum].head; w; w = w->next)
572	event (EV_A_ (W)w, EV_SIGNAL);
573	}
574	}	823	}
575		824
576	static void	825	void inline_speed
		826	fd_intern (int fd)
		827	{
		828	#ifdef _WIN32
		829	int arg = 1;
		830	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		831	#else
		832	fcntl (fd, F_SETFD, FD_CLOEXEC);
		833	fcntl (fd, F_SETFL, O_NONBLOCK);
		834	#endif
		835	}
		836
		837	static void noinline
577	siginit (EV_P)	838	siginit (EV_P)
578	{	839	{
579	#ifndef WIN32	840	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	841	fd_intern (sigpipe [1]);
581	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583	/* rather than sort out wether we really need nb, set it */
584	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586	#endif
587		842
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	843	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	844	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	845	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	846	}
592		847
593	/*****************************************************************************/	848	/*****************************************************************************/
594		849
595	static struct ev_child *childs [PID_HASHSIZE];	850	static WL childs [EV_PID_HASHSIZE];
596		851
597	#ifndef WIN32	852	#ifndef _WIN32
598		853
599	static struct ev_signal childev;	854	static ev_signal childev;
		855
		856	void inline_speed
		857	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		858	{
		859	ev_child *w;
		860
		861	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		862	if (w->pid == pid || !w->pid)
		863	{
		864	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		865	w->rpid = pid;
		866	w->rstatus = status;
		867	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		868	}
		869	}
600		870
601	#ifndef WCONTINUED	871	#ifndef WCONTINUED
602	# define WCONTINUED 0	872	# define WCONTINUED 0
603	#endif	873	#endif
604		874
605	static void	875	static void
606	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
607	{
608	struct ev_child *w;
609
610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
611	if (w->pid == pid || !w->pid)
612	{
613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614	w->rpid = pid;
615	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);
617	}
618	}
619
620	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	876	childcb (EV_P_ ev_signal *sw, int revents)
622	{	877	{
623	int pid, status;	878	int pid, status;
624		879
		880	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	881	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626	{	882	if (!WCONTINUED
		883	|| errno != EINVAL
		884	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		885	return;
		886
627	/* make sure we are called again until all childs have been reaped */	887	/* make sure we are called again until all childs have been reaped */
		888	/* we need to do it this way so that the callback gets called before we continue */
628	event (EV_A_ (W)sw, EV_SIGNAL);	889	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		890
630	child_reap (EV_A_ sw, pid, pid, status);	891	child_reap (EV_A_ sw, pid, pid, status);
		892	if (EV_PID_HASHSIZE > 1)
631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	893	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
632	}
633	}	894	}
634		895
635	#endif	896	#endif
636		897
637	/*****************************************************************************/	898	/*****************************************************************************/
638		899
		900	#if EV_USE_PORT
		901	# include "ev_port.c"
		902	#endif
639	#if EV_USE_KQUEUE	903	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	904	# include "ev_kqueue.c"
641	#endif	905	#endif
642	#if EV_USE_EPOLL	906	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	907	# include "ev_epoll.c"
…		…
660	{	924	{
661	return EV_VERSION_MINOR;	925	return EV_VERSION_MINOR;
662	}	926	}
663		927
664	/* return true if we are running with elevated privileges and should ignore env variables */	928	/* return true if we are running with elevated privileges and should ignore env variables */
665	static int	929	int inline_size
666	enable_secure (void)	930	enable_secure (void)
667	{	931	{
668	#ifdef WIN32	932	#ifdef _WIN32
669	return 0;	933	return 0;
670	#else	934	#else
671	return getuid () != geteuid ()	935	return getuid () != geteuid ()
672	|| getgid () != getegid ();	936	|| getgid () != getegid ();
673	#endif	937	#endif
674	}	938	}
675		939
676	int	940	unsigned int
677	ev_method (EV_P)	941	ev_supported_backends (void)
678	{	942	{
679	return method;	943	unsigned int flags = 0;
680	}
681		944
682	static void	945	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683	loop_init (EV_P_ int methods)	946	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		947	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		948	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		949	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		950
		951	return flags;
		952	}
		953
		954	unsigned int
		955	ev_recommended_backends (void)
684	{	956	{
685	if (!method)	957	unsigned int flags = ev_supported_backends ();
		958
		959	#ifndef __NetBSD__
		960	/* kqueue is borked on everything but netbsd apparently */
		961	/* it usually doesn't work correctly on anything but sockets and pipes */
		962	flags &= ~EVBACKEND_KQUEUE;
		963	#endif
		964	#ifdef __APPLE__
		965	// flags &= ~EVBACKEND_KQUEUE; for documentation
		966	flags &= ~EVBACKEND_POLL;
		967	#endif
		968
		969	return flags;
		970	}
		971
		972	unsigned int
		973	ev_embeddable_backends (void)
		974	{
		975	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		976	return EVBACKEND_KQUEUE
		977	| EVBACKEND_PORT;
		978	}
		979
		980	unsigned int
		981	ev_backend (EV_P)
		982	{
		983	return backend;
		984	}
		985
		986	unsigned int
		987	ev_loop_count (EV_P)
		988	{
		989	return loop_count;
		990	}
		991
		992	void
		993	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		994	{
		995	io_blocktime = interval;
		996	}
		997
		998	void
		999	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	timeout_blocktime = interval;
		1002	}
		1003
		1004	static void noinline
		1005	loop_init (EV_P_ unsigned int flags)
		1006	{
		1007	if (!backend)
686	{	1008	{
687	#if EV_USE_MONOTONIC	1009	#if EV_USE_MONOTONIC
688	{	1010	{
689	struct timespec ts;	1011	struct timespec ts;
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1012	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	1013	have_monotonic = 1;
692	}	1014	}
693	#endif	1015	#endif
694		1016
695	rt_now = ev_time ();	1017	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	1018	mn_now = get_clock ();
697	now_floor = mn_now;	1019	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	1020	rtmn_diff = ev_rt_now - mn_now;
699		1021
700	if (methods == EVMETHOD_AUTO)	1022	io_blocktime = 0.;
701	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1023	timeout_blocktime = 0.;
		1024
		1025	/* pid check not overridable via env */
		1026	#ifndef _WIN32
		1027	if (flags & EVFLAG_FORKCHECK)
		1028	curpid = getpid ();
		1029	#endif
		1030
		1031	if (!(flags & EVFLAG_NOENV)
		1032	&& !enable_secure ()
		1033	&& getenv ("LIBEV_FLAGS"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	1034	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else
704	methods = EVMETHOD_ANY;
705		1035
706	method = 0;	1036	if (!(flags & 0x0000ffffUL))
		1037	flags |= ev_recommended_backends ();
		1038
		1039	backend = 0;
		1040	backend_fd = -1;
707	#if EV_USE_WIN32	1041	#if EV_USE_INOTIFY
708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1042	fs_fd = -2;
		1043	#endif
		1044
		1045	#if EV_USE_PORT
		1046	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
709	#endif	1047	#endif
710	#if EV_USE_KQUEUE	1048	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1049	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712	#endif	1050	#endif
713	#if EV_USE_EPOLL	1051	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1052	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715	#endif	1053	#endif
716	#if EV_USE_POLL	1054	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1055	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718	#endif	1056	#endif
719	#if EV_USE_SELECT	1057	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1058	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721	#endif	1059	#endif
722		1060
723	ev_watcher_init (&sigev, sigcb);	1061	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	1062	ev_set_priority (&sigev, EV_MAXPRI);
725	}	1063	}
726	}	1064	}
727		1065
728	void	1066	static void noinline
729	loop_destroy (EV_P)	1067	loop_destroy (EV_P)
730	{	1068	{
731	int i;	1069	int i;
732		1070
733	#if EV_USE_WIN32	1071	#if EV_USE_INOTIFY
734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1072	if (fs_fd >= 0)
		1073	close (fs_fd);
		1074	#endif
		1075
		1076	if (backend_fd >= 0)
		1077	close (backend_fd);
		1078
		1079	#if EV_USE_PORT
		1080	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
735	#endif	1081	#endif
736	#if EV_USE_KQUEUE	1082	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1083	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738	#endif	1084	#endif
739	#if EV_USE_EPOLL	1085	#if EV_USE_EPOLL
740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1086	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741	#endif	1087	#endif
742	#if EV_USE_POLL	1088	#if EV_USE_POLL
743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1089	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744	#endif	1090	#endif
745	#if EV_USE_SELECT	1091	#if EV_USE_SELECT
746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1092	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747	#endif	1093	#endif
748		1094
749	for (i = NUMPRI; i--; )	1095	for (i = NUMPRI; i--; )
		1096	{
750	array_free (pending, [i]);	1097	array_free (pending, [i]);
		1098	#if EV_IDLE_ENABLE
		1099	array_free (idle, [i]);
		1100	#endif
		1101	}
		1102
		1103	ev_free (anfds); anfdmax = 0;
751		1104
752	/* have to use the microsoft-never-gets-it-right macro */	1105	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	1106	array_free (fdchange, EMPTY);
754	array_free_microshit (timer);	1107	array_free (timer, EMPTY);
755	array_free_microshit (periodic);	1108	#if EV_PERIODIC_ENABLE
756	array_free_microshit (idle);	1109	array_free (periodic, EMPTY);
757	array_free_microshit (prepare);	1110	#endif
758	array_free_microshit (check);	1111	#if EV_FORK_ENABLE
		1112	array_free (fork, EMPTY);
		1113	#endif
		1114	array_free (prepare, EMPTY);
		1115	array_free (check, EMPTY);
759		1116
760	method = 0;	1117	backend = 0;
761	}	1118	}
762		1119
763	static void	1120	void inline_size infy_fork (EV_P);
		1121
		1122	void inline_size
764	loop_fork (EV_P)	1123	loop_fork (EV_P)
765	{	1124	{
		1125	#if EV_USE_PORT
		1126	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1127	#endif
		1128	#if EV_USE_KQUEUE
		1129	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1130	#endif
766	#if EV_USE_EPOLL	1131	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1132	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768	#endif	1133	#endif
769	#if EV_USE_KQUEUE	1134	#if EV_USE_INOTIFY
770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1135	infy_fork (EV_A);
771	#endif	1136	#endif
772		1137
773	if (ev_is_active (&sigev))	1138	if (ev_is_active (&sigev))
774	{	1139	{
775	/* default loop */	1140	/* default loop */
…		…
788	postfork = 0;	1153	postfork = 0;
789	}	1154	}
790		1155
791	#if EV_MULTIPLICITY	1156	#if EV_MULTIPLICITY
792	struct ev_loop *	1157	struct ev_loop *
793	ev_loop_new (int methods)	1158	ev_loop_new (unsigned int flags)
794	{	1159	{
795	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1160	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796		1161
797	memset (loop, 0, sizeof (struct ev_loop));	1162	memset (loop, 0, sizeof (struct ev_loop));
798		1163
799	loop_init (EV_A_ methods);	1164	loop_init (EV_A_ flags);
800		1165
801	if (ev_method (EV_A))	1166	if (ev_backend (EV_A))
802	return loop;	1167	return loop;
803		1168
804	return 0;	1169	return 0;
805	}	1170	}
806		1171
…		…
818	}	1183	}
819		1184
820	#endif	1185	#endif
821		1186
822	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	1188	struct ev_loop *
		1189	ev_default_loop_init (unsigned int flags)
827	#else	1190	#else
828	static int default_loop;
829
830	int	1191	int
		1192	ev_default_loop (unsigned int flags)
831	#endif	1193	#endif
832	ev_default_loop (int methods)
833	{	1194	{
834	if (sigpipe [0] == sigpipe [1])	1195	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	1196	if (pipe (sigpipe))
836	return 0;	1197	return 0;
837		1198
838	if (!default_loop)	1199	if (!ev_default_loop_ptr)
839	{	1200	{
840	#if EV_MULTIPLICITY	1201	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	1202	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	1203	#else
843	default_loop = 1;	1204	ev_default_loop_ptr = 1;
844	#endif	1205	#endif
845		1206
846	loop_init (EV_A_ methods);	1207	loop_init (EV_A_ flags);
847		1208
848	if (ev_method (EV_A))	1209	if (ev_backend (EV_A))
849	{	1210	{
850	siginit (EV_A);	1211	siginit (EV_A);
851		1212
852	#ifndef WIN32	1213	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	1214	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	1215	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	1216	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	1217	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	1218	#endif
858	}	1219	}
859	else	1220	else
860	default_loop = 0;	1221	ev_default_loop_ptr = 0;
861	}	1222	}
862		1223
863	return default_loop;	1224	return ev_default_loop_ptr;
864	}	1225	}
865		1226
866	void	1227	void
867	ev_default_destroy (void)	1228	ev_default_destroy (void)
868	{	1229	{
869	#if EV_MULTIPLICITY	1230	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	1231	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	1232	#endif
872		1233
873	#ifndef WIN32	1234	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	1235	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	1236	ev_signal_stop (EV_A_ &childev);
876	#endif	1237	#endif
877		1238
878	ev_ref (EV_A); /* signal watcher */	1239	ev_ref (EV_A); /* signal watcher */
…		…
886		1247
887	void	1248	void
888	ev_default_fork (void)	1249	ev_default_fork (void)
889	{	1250	{
890	#if EV_MULTIPLICITY	1251	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	1252	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	1253	#endif
893		1254
894	if (method)	1255	if (backend)
895	postfork = 1;	1256	postfork = 1;
896	}	1257	}
897		1258
898	/*****************************************************************************/	1259	/*****************************************************************************/
899		1260
900	static void	1261	void
		1262	ev_invoke (EV_P_ void *w, int revents)
		1263	{
		1264	EV_CB_INVOKE ((W)w, revents);
		1265	}
		1266
		1267	void inline_speed
901	call_pending (EV_P)	1268	call_pending (EV_P)
902	{	1269	{
903	int pri;	1270	int pri;
904		1271
905	for (pri = NUMPRI; pri--; )	1272	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1273	while (pendingcnt [pri])
907	{	1274	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1275	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1276
910	if (p->w)	1277	if (expect_true (p->w))
911	{	1278	{
		1279	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1280
912	p->w->pending = 0;	1281	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1282	EV_CB_INVOKE (p->w, p->events);
914	}	1283	}
915	}	1284	}
916	}	1285	}
917		1286
918	static void	1287	void inline_size
919	timers_reify (EV_P)	1288	timers_reify (EV_P)
920	{	1289	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1290	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1291	{
923	struct ev_timer *w = timers [0];	1292	ev_timer *w = (ev_timer *)timers [0];
924		1293
925	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1294	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
926		1295
927	/* first reschedule or stop timer */	1296	/* first reschedule or stop timer */
928	if (w->repeat)	1297	if (w->repeat)
929	{	1298	{
930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1299	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1300
931	((WT)w)->at = mn_now + w->repeat;	1301	((WT)w)->at += w->repeat;
		1302	if (((WT)w)->at < mn_now)
		1303	((WT)w)->at = mn_now;
		1304
932	downheap ((WT *)timers, timercnt, 0);	1305	downheap (timers, timercnt, 0);
933	}	1306	}
934	else	1307	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1308	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1309
937	event (EV_A_ (W)w, EV_TIMEOUT);	1310	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1311	}
939	}	1312	}
940		1313
941	static void	1314	#if EV_PERIODIC_ENABLE
		1315	void inline_size
942	periodics_reify (EV_P)	1316	periodics_reify (EV_P)
943	{	1317	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1318	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1319	{
946	struct ev_periodic *w = periodics [0];	1320	ev_periodic *w = (ev_periodic *)periodics [0];
947		1321
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1322	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
949		1323
950	/* first reschedule or stop timer */	1324	/* first reschedule or stop timer */
951	if (w->interval)	1325	if (w->reschedule_cb)
952	{	1326	{
		1327	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1328	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1329	downheap (periodics, periodiccnt, 0);
		1330	}
		1331	else if (w->interval)
		1332	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1333	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1334	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1335	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955	downheap ((WT *)periodics, periodiccnt, 0);	1336	downheap (periodics, periodiccnt, 0);
956	}	1337	}
957	else	1338	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1339	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1340
960	event (EV_A_ (W)w, EV_PERIODIC);	1341	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1342	}
962	}	1343	}
963		1344
964	static void	1345	static void noinline
965	periodics_reschedule (EV_P)	1346	periodics_reschedule (EV_P)
966	{	1347	{
967	int i;	1348	int i;
968		1349
969	/* adjust periodics after time jump */	1350	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1351	for (i = 0; i < periodiccnt; ++i)
971	{	1352	{
972	struct ev_periodic *w = periodics [i];	1353	ev_periodic *w = (ev_periodic *)periodics [i];
973		1354
		1355	if (w->reschedule_cb)
		1356	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1357	else if (w->interval)
		1358	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1359	}
		1360
		1361	/* now rebuild the heap */
		1362	for (i = periodiccnt >> 1; i--; )
		1363	downheap (periodics, periodiccnt, i);
		1364	}
		1365	#endif
		1366
		1367	#if EV_IDLE_ENABLE
		1368	void inline_size
		1369	idle_reify (EV_P)
		1370	{
		1371	if (expect_false (idleall))
		1372	{
		1373	int pri;
		1374
		1375	for (pri = NUMPRI; pri--; )
975	{	1376	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1377	if (pendingcnt [pri])
		1378	break;
977		1379
978	if (fabs (diff) >= 1e-4)	1380	if (idlecnt [pri])
979	{	1381	{
980	ev_periodic_stop (EV_A_ w);	1382	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
981	ev_periodic_start (EV_A_ w);	1383	break;
982
983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
984	}	1384	}
985	}	1385	}
986	}	1386	}
987	}	1387	}
		1388	#endif
988		1389
989	inline int	1390	void inline_speed
990	time_update_monotonic (EV_P)	1391	time_update (EV_P_ ev_tstamp max_block)
991	{
992	mn_now = get_clock ();
993
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{
996	rt_now = rtmn_diff + mn_now;
997	return 0;
998	}
999	else
1000	{
1001	now_floor = mn_now;
1002	rt_now = ev_time ();
1003	return 1;
1004	}
1005	}
1006
1007	static void
1008	time_update (EV_P)
1009	{	1392	{
1010	int i;	1393	int i;
1011		1394
1012	#if EV_USE_MONOTONIC	1395	#if EV_USE_MONOTONIC
1013	if (expect_true (have_monotonic))	1396	if (expect_true (have_monotonic))
1014	{	1397	{
1015	if (time_update_monotonic (EV_A))	1398	ev_tstamp odiff = rtmn_diff;
		1399
		1400	mn_now = get_clock ();
		1401
		1402	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1403	/* interpolate in the meantime */
		1404	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1016	{	1405	{
1017	ev_tstamp odiff = rtmn_diff;	1406	ev_rt_now = rtmn_diff + mn_now;
		1407	return;
		1408	}
1018		1409
		1410	now_floor = mn_now;
		1411	ev_rt_now = ev_time ();
		1412
1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1413	/* loop a few times, before making important decisions.
		1414	* on the choice of "4": one iteration isn't enough,
		1415	* in case we get preempted during the calls to
		1416	* ev_time and get_clock. a second call is almost guaranteed
		1417	* to succeed in that case, though. and looping a few more times
		1418	* doesn't hurt either as we only do this on time-jumps or
		1419	* in the unlikely event of having been preempted here.
		1420	*/
		1421	for (i = 4; --i; )
1020	{	1422	{
1021	rtmn_diff = rt_now - mn_now;	1423	rtmn_diff = ev_rt_now - mn_now;
1022		1424
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1425	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1426	return; /* all is well */
1025		1427
1026	rt_now = ev_time ();	1428	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1429	mn_now = get_clock ();
1028	now_floor = mn_now;	1430	now_floor = mn_now;
1029	}	1431	}
1030		1432
		1433	# if EV_PERIODIC_ENABLE
		1434	periodics_reschedule (EV_A);
		1435	# endif
		1436	/* no timer adjustment, as the monotonic clock doesn't jump */
		1437	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1438	}
		1439	else
		1440	#endif
		1441	{
		1442	ev_rt_now = ev_time ();
		1443
		1444	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1445	{
		1446	#if EV_PERIODIC_ENABLE
1031	periodics_reschedule (EV_A);	1447	periodics_reschedule (EV_A);
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1448	#endif
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1449	/* adjust timers. this is easy, as the offset is the same for all of them */
		1450	for (i = 0; i < timercnt; ++i)
		1451	((WT)timers [i])->at += ev_rt_now - mn_now;
1034	}	1452	}
1035	}
1036	else
1037	#endif
1038	{
1039	rt_now = ev_time ();
1040		1453
1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{
1043	periodics_reschedule (EV_A);
1044
1045	/* adjust timers. this is easy, as the offset is the same for all */
1046	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;
1048	}
1049
1050	mn_now = rt_now;	1454	mn_now = ev_rt_now;
1051	}	1455	}
1052	}	1456	}
1053		1457
1054	void	1458	void
1055	ev_ref (EV_P)	1459	ev_ref (EV_P)
…		…
1066	static int loop_done;	1470	static int loop_done;
1067		1471
1068	void	1472	void
1069	ev_loop (EV_P_ int flags)	1473	ev_loop (EV_P_ int flags)
1070	{	1474	{
1071	double block;
1072	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1475	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1476	? EVUNLOOP_ONE
		1477	: EVUNLOOP_CANCEL;
		1478
		1479	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1073		1480
1074	do	1481	do
1075	{	1482	{
		1483	#ifndef _WIN32
		1484	if (expect_false (curpid)) /* penalise the forking check even more */
		1485	if (expect_false (getpid () != curpid))
		1486	{
		1487	curpid = getpid ();
		1488	postfork = 1;
		1489	}
		1490	#endif
		1491
		1492	#if EV_FORK_ENABLE
		1493	/* we might have forked, so queue fork handlers */
		1494	if (expect_false (postfork))
		1495	if (forkcnt)
		1496	{
		1497	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1498	call_pending (EV_A);
		1499	}
		1500	#endif
		1501
1076	/* queue check watchers (and execute them) */	1502	/* queue prepare watchers (and execute them) */
1077	if (expect_false (preparecnt))	1503	if (expect_false (preparecnt))
1078	{	1504	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1505	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080	call_pending (EV_A);	1506	call_pending (EV_A);
1081	}	1507	}
1082		1508
		1509	if (expect_false (!activecnt))
		1510	break;
		1511
1083	/* we might have forked, so reify kernel state if necessary */	1512	/* we might have forked, so reify kernel state if necessary */
1084	if (expect_false (postfork))	1513	if (expect_false (postfork))
1085	loop_fork (EV_A);	1514	loop_fork (EV_A);
1086		1515
1087	/* update fd-related kernel structures */	1516	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1517	fd_reify (EV_A);
1089		1518
1090	/* calculate blocking time */	1519	/* calculate blocking time */
		1520	{
		1521	ev_tstamp waittime = 0.;
		1522	ev_tstamp sleeptime = 0.;
1091		1523
1092	/* we only need this for !monotonic clockor timers, but as we basically	1524	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1093	always have timers, we just calculate it always */
1094	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);
1097	else
1098	#endif
1099	{	1525	{
1100	rt_now = ev_time ();	1526	/* update time to cancel out callback processing overhead */
1101	mn_now = rt_now;	1527	time_update (EV_A_ 1e100);
1102	}
1103		1528
1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
1105	block = 0.;
1106	else
1107	{
1108	block = MAX_BLOCKTIME;	1529	waittime = MAX_BLOCKTIME;
1109		1530
1110	if (timercnt)	1531	if (timercnt)
1111	{	1532	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1533	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113	if (block > to) block = to;	1534	if (waittime > to) waittime = to;
1114	}	1535	}
1115		1536
		1537	#if EV_PERIODIC_ENABLE
1116	if (periodiccnt)	1538	if (periodiccnt)
1117	{	1539	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1540	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119	if (block > to) block = to;	1541	if (waittime > to) waittime = to;
1120	}	1542	}
		1543	#endif
1121		1544
1122	if (block < 0.) block = 0.;	1545	if (expect_false (waittime < timeout_blocktime))
		1546	waittime = timeout_blocktime;
		1547
		1548	sleeptime = waittime - backend_fudge;
		1549
		1550	if (expect_true (sleeptime > io_blocktime))
		1551	sleeptime = io_blocktime;
		1552
		1553	if (sleeptime)
		1554	{
		1555	ev_sleep (sleeptime);
		1556	waittime -= sleeptime;
		1557	}
1123	}	1558	}
1124		1559
1125	method_poll (EV_A_ block);	1560	++loop_count;
		1561	backend_poll (EV_A_ waittime);
1126		1562
1127	/* update rt_now, do magic */	1563	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1564	time_update (EV_A_ waittime + sleeptime);
		1565	}
1129		1566
1130	/* queue pending timers and reschedule them */	1567	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1568	timers_reify (EV_A); /* relative timers called last */
		1569	#if EV_PERIODIC_ENABLE
1132	periodics_reify (EV_A); /* absolute timers called first */	1570	periodics_reify (EV_A); /* absolute timers called first */
		1571	#endif
1133		1572
		1573	#if EV_IDLE_ENABLE
1134	/* queue idle watchers unless io or timers are pending */	1574	/* queue idle watchers unless other events are pending */
1135	if (!pendingcnt)	1575	idle_reify (EV_A);
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1576	#endif
1137		1577
1138	/* queue check watchers, to be executed first */	1578	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1579	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1580	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1581
1142	call_pending (EV_A);	1582	call_pending (EV_A);
		1583
1143	}	1584	}
1144	while (activecnt && !loop_done);	1585	while (expect_true (activecnt && !loop_done));
1145		1586
1146	if (loop_done != 2)	1587	if (loop_done == EVUNLOOP_ONE)
1147	loop_done = 0;	1588	loop_done = EVUNLOOP_CANCEL;
1148	}	1589	}
1149		1590
1150	void	1591	void
1151	ev_unloop (EV_P_ int how)	1592	ev_unloop (EV_P_ int how)
1152	{	1593	{
1153	loop_done = how;	1594	loop_done = how;
1154	}	1595	}
1155		1596
1156	/*****************************************************************************/	1597	/*****************************************************************************/
1157		1598
1158	inline void	1599	void inline_size
1159	wlist_add (WL *head, WL elem)	1600	wlist_add (WL *head, WL elem)
1160	{	1601	{
1161	elem->next = *head;	1602	elem->next = *head;
1162	*head = elem;	1603	*head = elem;
1163	}	1604	}
1164		1605
1165	inline void	1606	void inline_size
1166	wlist_del (WL *head, WL elem)	1607	wlist_del (WL *head, WL elem)
1167	{	1608	{
1168	while (*head)	1609	while (*head)
1169	{	1610	{
1170	if (*head == elem)	1611	if (*head == elem)
…		…
1175		1616
1176	head = &(*head)->next;	1617	head = &(*head)->next;
1177	}	1618	}
1178	}	1619	}
1179		1620
1180	inline void	1621	void inline_speed
1181	ev_clear_pending (EV_P_ W w)	1622	clear_pending (EV_P_ W w)
1182	{	1623	{
1183	if (w->pending)	1624	if (w->pending)
1184	{	1625	{
1185	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1626	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186	w->pending = 0;	1627	w->pending = 0;
1187	}	1628	}
1188	}	1629	}
1189		1630
1190	inline void	1631	int
		1632	ev_clear_pending (EV_P_ void *w)
		1633	{
		1634	W w_ = (W)w;
		1635	int pending = w_->pending;
		1636
		1637	if (expect_true (pending))
		1638	{
		1639	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1640	w_->pending = 0;
		1641	p->w = 0;
		1642	return p->events;
		1643	}
		1644	else
		1645	return 0;
		1646	}
		1647
		1648	void inline_size
		1649	pri_adjust (EV_P_ W w)
		1650	{
		1651	int pri = w->priority;
		1652	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1653	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1654	w->priority = pri;
		1655	}
		1656
		1657	void inline_speed
1191	ev_start (EV_P_ W w, int active)	1658	ev_start (EV_P_ W w, int active)
1192	{	1659	{
1193	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1660	pri_adjust (EV_A_ w);
1194	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195
1196	w->active = active;	1661	w->active = active;
1197	ev_ref (EV_A);	1662	ev_ref (EV_A);
1198	}	1663	}
1199		1664
1200	inline void	1665	void inline_size
1201	ev_stop (EV_P_ W w)	1666	ev_stop (EV_P_ W w)
1202	{	1667	{
1203	ev_unref (EV_A);	1668	ev_unref (EV_A);
1204	w->active = 0;	1669	w->active = 0;
1205	}	1670	}
1206		1671
1207	/*****************************************************************************/	1672	/*****************************************************************************/
1208		1673
1209	void	1674	void noinline
1210	ev_io_start (EV_P_ struct ev_io *w)	1675	ev_io_start (EV_P_ ev_io *w)
1211	{	1676	{
1212	int fd = w->fd;	1677	int fd = w->fd;
1213		1678
1214	if (ev_is_active (w))	1679	if (expect_false (ev_is_active (w)))
1215	return;	1680	return;
1216		1681
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1682	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1683
1219	ev_start (EV_A_ (W)w, 1);	1684	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1685	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1686	wlist_add (&anfds[fd].head, (WL)w);
1222		1687
1223	fd_change (EV_A_ fd);	1688	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1689	w->events &= ~EV_IOFDSET;
1224	}	1690	}
1225		1691
1226	void	1692	void noinline
1227	ev_io_stop (EV_P_ struct ev_io *w)	1693	ev_io_stop (EV_P_ ev_io *w)
1228	{	1694	{
1229	ev_clear_pending (EV_A_ (W)w);	1695	clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1696	if (expect_false (!ev_is_active (w)))
1231	return;	1697	return;
1232		1698
		1699	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1700
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1701	wlist_del (&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1235		1703
1236	fd_change (EV_A_ w->fd);	1704	fd_change (EV_A_ w->fd, 1);
1237	}	1705	}
1238		1706
1239	void	1707	void noinline
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1708	ev_timer_start (EV_P_ ev_timer *w)
1241	{	1709	{
1242	if (ev_is_active (w))	1710	if (expect_false (ev_is_active (w)))
1243	return;	1711	return;
1244		1712
1245	((WT)w)->at += mn_now;	1713	((WT)w)->at += mn_now;
1246		1714
1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1715	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248		1716
1249	ev_start (EV_A_ (W)w, ++timercnt);	1717	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1718	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1719	timers [timercnt - 1] = (WT)w;
1252	upheap ((WT *)timers, timercnt - 1);	1720	upheap (timers, timercnt - 1);
1253		1721
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1722	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1255	}	1723	}
1256		1724
1257	void	1725	void noinline
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1726	ev_timer_stop (EV_P_ ev_timer *w)
1259	{	1727	{
1260	ev_clear_pending (EV_A_ (W)w);	1728	clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1729	if (expect_false (!ev_is_active (w)))
1262	return;	1730	return;
1263		1731
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1732	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1265		1733
1266	if (((W)w)->active < timercnt--)	1734	{
		1735	int active = ((W)w)->active;
		1736
		1737	if (expect_true (--active < --timercnt))
1267	{	1738	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1739	timers [active] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1740	adjustheap (timers, timercnt, active);
1270	}	1741	}
		1742	}
1271		1743
1272	((WT)w)->at = w->repeat;	1744	((WT)w)->at -= mn_now;
1273		1745
1274	ev_stop (EV_A_ (W)w);	1746	ev_stop (EV_A_ (W)w);
1275	}	1747	}
1276		1748
1277	void	1749	void noinline
1278	ev_timer_again (EV_P_ struct ev_timer *w)	1750	ev_timer_again (EV_P_ ev_timer *w)
1279	{	1751	{
1280	if (ev_is_active (w))	1752	if (ev_is_active (w))
1281	{	1753	{
1282	if (w->repeat)	1754	if (w->repeat)
1283	{	1755	{
1284	((WT)w)->at = mn_now + w->repeat;	1756	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1757	adjustheap (timers, timercnt, ((W)w)->active - 1);
1286	}	1758	}
1287	else	1759	else
1288	ev_timer_stop (EV_A_ w);	1760	ev_timer_stop (EV_A_ w);
1289	}	1761	}
1290	else if (w->repeat)	1762	else if (w->repeat)
		1763	{
		1764	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1765	ev_timer_start (EV_A_ w);
		1766	}
1292	}	1767	}
1293		1768
1294	void	1769	#if EV_PERIODIC_ENABLE
		1770	void noinline
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1771	ev_periodic_start (EV_P_ ev_periodic *w)
1296	{	1772	{
1297	if (ev_is_active (w))	1773	if (expect_false (ev_is_active (w)))
1298	return;	1774	return;
1299		1775
		1776	if (w->reschedule_cb)
		1777	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1778	else if (w->interval)
		1779	{
1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1780	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1301
1302	/* this formula differs from the one in periodic_reify because we do not always round up */	1781	/* this formula differs from the one in periodic_reify because we do not always round up */
1303	if (w->interval)
1304	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1782	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1783	}
		1784	else
		1785	((WT)w)->at = w->offset;
1305		1786
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1787	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1788	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1789	periodics [periodiccnt - 1] = (WT)w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1790	upheap (periodics, periodiccnt - 1);
1310		1791
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1792	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1312	}	1793	}
1313		1794
1314	void	1795	void noinline
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1796	ev_periodic_stop (EV_P_ ev_periodic *w)
1316	{	1797	{
1317	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1799	if (expect_false (!ev_is_active (w)))
1319	return;	1800	return;
1320		1801
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1802	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1322		1803
1323	if (((W)w)->active < periodiccnt--)	1804	{
		1805	int active = ((W)w)->active;
		1806
		1807	if (expect_true (--active < --periodiccnt))
1324	{	1808	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1809	periodics [active] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1810	adjustheap (periodics, periodiccnt, active);
1327	}	1811	}
		1812	}
1328		1813
1329	ev_stop (EV_A_ (W)w);	1814	ev_stop (EV_A_ (W)w);
1330	}	1815	}
1331		1816
1332	void	1817	void noinline
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1818	ev_periodic_again (EV_P_ ev_periodic *w)
1334	{	1819	{
1335	if (ev_is_active (w))	1820	/* TODO: use adjustheap and recalculation */
1336	return;
1337
1338	ev_start (EV_A_ (W)w, ++idlecnt);
1339	array_needsize (idles, idlemax, idlecnt, (void));
1340	idles [idlecnt - 1] = w;
1341	}
1342
1343	void
1344	ev_idle_stop (EV_P_ struct ev_idle *w)
1345	{
1346	ev_clear_pending (EV_A_ (W)w);
1347	if (ev_is_active (w))
1348	return;
1349
1350	idles [((W)w)->active - 1] = idles [--idlecnt];
1351	ev_stop (EV_A_ (W)w);	1821	ev_periodic_stop (EV_A_ w);
		1822	ev_periodic_start (EV_A_ w);
1352	}	1823	}
1353		1824	#endif
1354	void
1355	ev_prepare_start (EV_P_ struct ev_prepare *w)
1356	{
1357	if (ev_is_active (w))
1358	return;
1359
1360	ev_start (EV_A_ (W)w, ++preparecnt);
1361	array_needsize (prepares, preparemax, preparecnt, (void));
1362	prepares [preparecnt - 1] = w;
1363	}
1364
1365	void
1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367	{
1368	ev_clear_pending (EV_A_ (W)w);
1369	if (ev_is_active (w))
1370	return;
1371
1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373	ev_stop (EV_A_ (W)w);
1374	}
1375
1376	void
1377	ev_check_start (EV_P_ struct ev_check *w)
1378	{
1379	if (ev_is_active (w))
1380	return;
1381
1382	ev_start (EV_A_ (W)w, ++checkcnt);
1383	array_needsize (checks, checkmax, checkcnt, (void));
1384	checks [checkcnt - 1] = w;
1385	}
1386
1387	void
1388	ev_check_stop (EV_P_ struct ev_check *w)
1389	{
1390	ev_clear_pending (EV_A_ (W)w);
1391	if (ev_is_active (w))
1392	return;
1393
1394	checks [((W)w)->active - 1] = checks [--checkcnt];
1395	ev_stop (EV_A_ (W)w);
1396	}
1397		1825
1398	#ifndef SA_RESTART	1826	#ifndef SA_RESTART
1399	# define SA_RESTART 0	1827	# define SA_RESTART 0
1400	#endif	1828	#endif
1401		1829
1402	void	1830	void noinline
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1831	ev_signal_start (EV_P_ ev_signal *w)
1404	{	1832	{
1405	#if EV_MULTIPLICITY	1833	#if EV_MULTIPLICITY
1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1834	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407	#endif	1835	#endif
1408	if (ev_is_active (w))	1836	if (expect_false (ev_is_active (w)))
1409	return;	1837	return;
1410		1838
1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1839	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412		1840
		1841	{
		1842	#ifndef _WIN32
		1843	sigset_t full, prev;
		1844	sigfillset (&full);
		1845	sigprocmask (SIG_SETMASK, &full, &prev);
		1846	#endif
		1847
		1848	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1849
		1850	#ifndef _WIN32
		1851	sigprocmask (SIG_SETMASK, &prev, 0);
		1852	#endif
		1853	}
		1854
1413	ev_start (EV_A_ (W)w, 1);	1855	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1856	wlist_add (&signals [w->signum - 1].head, (WL)w);
1416		1857
1417	if (!((WL)w)->next)	1858	if (!((WL)w)->next)
1418	{	1859	{
1419	#if WIN32	1860	#if _WIN32
1420	signal (w->signum, sighandler);	1861	signal (w->signum, sighandler);
1421	#else	1862	#else
1422	struct sigaction sa;	1863	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1864	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1865	sigfillset (&sa.sa_mask);
…		…
1426	sigaction (w->signum, &sa, 0);	1867	sigaction (w->signum, &sa, 0);
1427	#endif	1868	#endif
1428	}	1869	}
1429	}	1870	}
1430		1871
1431	void	1872	void noinline
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1873	ev_signal_stop (EV_P_ ev_signal *w)
1433	{	1874	{
1434	ev_clear_pending (EV_A_ (W)w);	1875	clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1876	if (expect_false (!ev_is_active (w)))
1436	return;	1877	return;
1437		1878
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1879	wlist_del (&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1880	ev_stop (EV_A_ (W)w);
1440		1881
1441	if (!signals [w->signum - 1].head)	1882	if (!signals [w->signum - 1].head)
1442	signal (w->signum, SIG_DFL);	1883	signal (w->signum, SIG_DFL);
1443	}	1884	}
1444		1885
1445	void	1886	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1887	ev_child_start (EV_P_ ev_child *w)
1447	{	1888	{
1448	#if EV_MULTIPLICITY	1889	#if EV_MULTIPLICITY
1449	assert (("child watchers are only supported in the default loop", loop == default_loop));	1890	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450	#endif	1891	#endif
1451	if (ev_is_active (w))	1892	if (expect_false (ev_is_active (w)))
1452	return;	1893	return;
1453		1894
1454	ev_start (EV_A_ (W)w, 1);	1895	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1896	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456	}	1897	}
1457		1898
1458	void	1899	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1900	ev_child_stop (EV_P_ ev_child *w)
1460	{	1901	{
1461	ev_clear_pending (EV_A_ (W)w);	1902	clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1903	if (expect_false (!ev_is_active (w)))
1463	return;	1904	return;
1464		1905
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1906	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1907	ev_stop (EV_A_ (W)w);
1467	}	1908	}
1468		1909
		1910	#if EV_STAT_ENABLE
		1911
		1912	# ifdef _WIN32
		1913	# undef lstat
		1914	# define lstat(a,b) _stati64 (a,b)
		1915	# endif
		1916
		1917	#define DEF_STAT_INTERVAL 5.0074891
		1918	#define MIN_STAT_INTERVAL 0.1074891
		1919
		1920	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1921
		1922	#if EV_USE_INOTIFY
		1923	# define EV_INOTIFY_BUFSIZE 8192
		1924
		1925	static void noinline
		1926	infy_add (EV_P_ ev_stat *w)
		1927	{
		1928	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);
		1929
		1930	if (w->wd < 0)
		1931	{
		1932	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1933
		1934	/* monitor some parent directory for speedup hints */
		1935	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1936	{
		1937	char path [4096];
		1938	strcpy (path, w->path);
		1939
		1940	do
		1941	{
		1942	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1943	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1944
		1945	char *pend = strrchr (path, '/');
		1946
		1947	if (!pend)
		1948	break; /* whoops, no '/', complain to your admin */
		1949
		1950	*pend = 0;
		1951	w->wd = inotify_add_watch (fs_fd, path, mask);
		1952	}
		1953	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1954	}
		1955	}
		1956	else
		1957	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1958
		1959	if (w->wd >= 0)
		1960	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1961	}
		1962
		1963	static void noinline
		1964	infy_del (EV_P_ ev_stat *w)
		1965	{
		1966	int slot;
		1967	int wd = w->wd;
		1968
		1969	if (wd < 0)
		1970	return;
		1971
		1972	w->wd = -2;
		1973	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1974	wlist_del (&fs_hash [slot].head, (WL)w);
		1975
		1976	/* remove this watcher, if others are watching it, they will rearm */
		1977	inotify_rm_watch (fs_fd, wd);
		1978	}
		1979
		1980	static void noinline
		1981	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1982	{
		1983	if (slot < 0)
		1984	/* overflow, need to check for all hahs slots */
		1985	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1986	infy_wd (EV_A_ slot, wd, ev);
		1987	else
		1988	{
		1989	WL w_;
		1990
		1991	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1992	{
		1993	ev_stat *w = (ev_stat *)w_;
		1994	w_ = w_->next; /* lets us remove this watcher and all before it */
		1995
		1996	if (w->wd == wd || wd == -1)
		1997	{
		1998	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1999	{
		2000	w->wd = -1;
		2001	infy_add (EV_A_ w); /* re-add, no matter what */
		2002	}
		2003
		2004	stat_timer_cb (EV_A_ &w->timer, 0);
		2005	}
		2006	}
		2007	}
		2008	}
		2009
		2010	static void
		2011	infy_cb (EV_P_ ev_io *w, int revents)
		2012	{
		2013	char buf [EV_INOTIFY_BUFSIZE];
		2014	struct inotify_event *ev = (struct inotify_event *)buf;
		2015	int ofs;
		2016	int len = read (fs_fd, buf, sizeof (buf));
		2017
		2018	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2019	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2020	}
		2021
		2022	void inline_size
		2023	infy_init (EV_P)
		2024	{
		2025	if (fs_fd != -2)
		2026	return;
		2027
		2028	fs_fd = inotify_init ();
		2029
		2030	if (fs_fd >= 0)
		2031	{
		2032	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2033	ev_set_priority (&fs_w, EV_MAXPRI);
		2034	ev_io_start (EV_A_ &fs_w);
		2035	}
		2036	}
		2037
		2038	void inline_size
		2039	infy_fork (EV_P)
		2040	{
		2041	int slot;
		2042
		2043	if (fs_fd < 0)
		2044	return;
		2045
		2046	close (fs_fd);
		2047	fs_fd = inotify_init ();
		2048
		2049	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2050	{
		2051	WL w_ = fs_hash [slot].head;
		2052	fs_hash [slot].head = 0;
		2053
		2054	while (w_)
		2055	{
		2056	ev_stat *w = (ev_stat *)w_;
		2057	w_ = w_->next; /* lets us add this watcher */
		2058
		2059	w->wd = -1;
		2060
		2061	if (fs_fd >= 0)
		2062	infy_add (EV_A_ w); /* re-add, no matter what */
		2063	else
		2064	ev_timer_start (EV_A_ &w->timer);
		2065	}
		2066
		2067	}
		2068	}
		2069
		2070	#endif
		2071
		2072	void
		2073	ev_stat_stat (EV_P_ ev_stat *w)
		2074	{
		2075	if (lstat (w->path, &w->attr) < 0)
		2076	w->attr.st_nlink = 0;
		2077	else if (!w->attr.st_nlink)
		2078	w->attr.st_nlink = 1;
		2079	}
		2080
		2081	static void noinline
		2082	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2083	{
		2084	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2085
		2086	/* we copy this here each the time so that */
		2087	/* prev has the old value when the callback gets invoked */
		2088	w->prev = w->attr;
		2089	ev_stat_stat (EV_A_ w);
		2090
		2091	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2092	if (
		2093	w->prev.st_dev != w->attr.st_dev
		2094	|| w->prev.st_ino != w->attr.st_ino
		2095	|| w->prev.st_mode != w->attr.st_mode
		2096	|| w->prev.st_nlink != w->attr.st_nlink
		2097	|| w->prev.st_uid != w->attr.st_uid
		2098	|| w->prev.st_gid != w->attr.st_gid
		2099	|| w->prev.st_rdev != w->attr.st_rdev
		2100	|| w->prev.st_size != w->attr.st_size
		2101	|| w->prev.st_atime != w->attr.st_atime
		2102	|| w->prev.st_mtime != w->attr.st_mtime
		2103	|| w->prev.st_ctime != w->attr.st_ctime
		2104	) {
		2105	#if EV_USE_INOTIFY
		2106	infy_del (EV_A_ w);
		2107	infy_add (EV_A_ w);
		2108	ev_stat_stat (EV_A_ w); /* avoid race... */
		2109	#endif
		2110
		2111	ev_feed_event (EV_A_ w, EV_STAT);
		2112	}
		2113	}
		2114
		2115	void
		2116	ev_stat_start (EV_P_ ev_stat *w)
		2117	{
		2118	if (expect_false (ev_is_active (w)))
		2119	return;
		2120
		2121	/* since we use memcmp, we need to clear any padding data etc. */
		2122	memset (&w->prev, 0, sizeof (ev_statdata));
		2123	memset (&w->attr, 0, sizeof (ev_statdata));
		2124
		2125	ev_stat_stat (EV_A_ w);
		2126
		2127	if (w->interval < MIN_STAT_INTERVAL)
		2128	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2129
		2130	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2131	ev_set_priority (&w->timer, ev_priority (w));
		2132
		2133	#if EV_USE_INOTIFY
		2134	infy_init (EV_A);
		2135
		2136	if (fs_fd >= 0)
		2137	infy_add (EV_A_ w);
		2138	else
		2139	#endif
		2140	ev_timer_start (EV_A_ &w->timer);
		2141
		2142	ev_start (EV_A_ (W)w, 1);
		2143	}
		2144
		2145	void
		2146	ev_stat_stop (EV_P_ ev_stat *w)
		2147	{
		2148	clear_pending (EV_A_ (W)w);
		2149	if (expect_false (!ev_is_active (w)))
		2150	return;
		2151
		2152	#if EV_USE_INOTIFY
		2153	infy_del (EV_A_ w);
		2154	#endif
		2155	ev_timer_stop (EV_A_ &w->timer);
		2156
		2157	ev_stop (EV_A_ (W)w);
		2158	}
		2159	#endif
		2160
		2161	#if EV_IDLE_ENABLE
		2162	void
		2163	ev_idle_start (EV_P_ ev_idle *w)
		2164	{
		2165	if (expect_false (ev_is_active (w)))
		2166	return;
		2167
		2168	pri_adjust (EV_A_ (W)w);
		2169
		2170	{
		2171	int active = ++idlecnt [ABSPRI (w)];
		2172
		2173	++idleall;
		2174	ev_start (EV_A_ (W)w, active);
		2175
		2176	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2177	idles [ABSPRI (w)][active - 1] = w;
		2178	}
		2179	}
		2180
		2181	void
		2182	ev_idle_stop (EV_P_ ev_idle *w)
		2183	{
		2184	clear_pending (EV_A_ (W)w);
		2185	if (expect_false (!ev_is_active (w)))
		2186	return;
		2187
		2188	{
		2189	int active = ((W)w)->active;
		2190
		2191	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2192	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2193
		2194	ev_stop (EV_A_ (W)w);
		2195	--idleall;
		2196	}
		2197	}
		2198	#endif
		2199
		2200	void
		2201	ev_prepare_start (EV_P_ ev_prepare *w)
		2202	{
		2203	if (expect_false (ev_is_active (w)))
		2204	return;
		2205
		2206	ev_start (EV_A_ (W)w, ++preparecnt);
		2207	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2208	prepares [preparecnt - 1] = w;
		2209	}
		2210
		2211	void
		2212	ev_prepare_stop (EV_P_ ev_prepare *w)
		2213	{
		2214	clear_pending (EV_A_ (W)w);
		2215	if (expect_false (!ev_is_active (w)))
		2216	return;
		2217
		2218	{
		2219	int active = ((W)w)->active;
		2220	prepares [active - 1] = prepares [--preparecnt];
		2221	((W)prepares [active - 1])->active = active;
		2222	}
		2223
		2224	ev_stop (EV_A_ (W)w);
		2225	}
		2226
		2227	void
		2228	ev_check_start (EV_P_ ev_check *w)
		2229	{
		2230	if (expect_false (ev_is_active (w)))
		2231	return;
		2232
		2233	ev_start (EV_A_ (W)w, ++checkcnt);
		2234	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2235	checks [checkcnt - 1] = w;
		2236	}
		2237
		2238	void
		2239	ev_check_stop (EV_P_ ev_check *w)
		2240	{
		2241	clear_pending (EV_A_ (W)w);
		2242	if (expect_false (!ev_is_active (w)))
		2243	return;
		2244
		2245	{
		2246	int active = ((W)w)->active;
		2247	checks [active - 1] = checks [--checkcnt];
		2248	((W)checks [active - 1])->active = active;
		2249	}
		2250
		2251	ev_stop (EV_A_ (W)w);
		2252	}
		2253
		2254	#if EV_EMBED_ENABLE
		2255	void noinline
		2256	ev_embed_sweep (EV_P_ ev_embed *w)
		2257	{
		2258	ev_loop (w->other, EVLOOP_NONBLOCK);
		2259	}
		2260
		2261	static void
		2262	embed_io_cb (EV_P_ ev_io *io, int revents)
		2263	{
		2264	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2265
		2266	if (ev_cb (w))
		2267	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2268	else
		2269	ev_embed_sweep (loop, w);
		2270	}
		2271
		2272	static void
		2273	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2274	{
		2275	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2276
		2277	fd_reify (w->other);
		2278	}
		2279
		2280	void
		2281	ev_embed_start (EV_P_ ev_embed *w)
		2282	{
		2283	if (expect_false (ev_is_active (w)))
		2284	return;
		2285
		2286	{
		2287	struct ev_loop *loop = w->other;
		2288	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2289	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2290	}
		2291
		2292	ev_set_priority (&w->io, ev_priority (w));
		2293	ev_io_start (EV_A_ &w->io);
		2294
		2295	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2296	ev_set_priority (&w->prepare, EV_MINPRI);
		2297	ev_prepare_start (EV_A_ &w->prepare);
		2298
		2299	ev_start (EV_A_ (W)w, 1);
		2300	}
		2301
		2302	void
		2303	ev_embed_stop (EV_P_ ev_embed *w)
		2304	{
		2305	clear_pending (EV_A_ (W)w);
		2306	if (expect_false (!ev_is_active (w)))
		2307	return;
		2308
		2309	ev_io_stop (EV_A_ &w->io);
		2310	ev_prepare_stop (EV_A_ &w->prepare);
		2311
		2312	ev_stop (EV_A_ (W)w);
		2313	}
		2314	#endif
		2315
		2316	#if EV_FORK_ENABLE
		2317	void
		2318	ev_fork_start (EV_P_ ev_fork *w)
		2319	{
		2320	if (expect_false (ev_is_active (w)))
		2321	return;
		2322
		2323	ev_start (EV_A_ (W)w, ++forkcnt);
		2324	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2325	forks [forkcnt - 1] = w;
		2326	}
		2327
		2328	void
		2329	ev_fork_stop (EV_P_ ev_fork *w)
		2330	{
		2331	clear_pending (EV_A_ (W)w);
		2332	if (expect_false (!ev_is_active (w)))
		2333	return;
		2334
		2335	{
		2336	int active = ((W)w)->active;
		2337	forks [active - 1] = forks [--forkcnt];
		2338	((W)forks [active - 1])->active = active;
		2339	}
		2340
		2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
1469	/*****************************************************************************/	2345	/*****************************************************************************/
1470		2346
1471	struct ev_once	2347	struct ev_once
1472	{	2348	{
1473	struct ev_io io;	2349	ev_io io;
1474	struct ev_timer to;	2350	ev_timer to;
1475	void (*cb)(int revents, void *arg);	2351	void (*cb)(int revents, void *arg);
1476	void *arg;	2352	void *arg;
1477	};	2353	};
1478		2354
1479	static void	2355	static void
…		…
1488		2364
1489	cb (revents, arg);	2365	cb (revents, arg);
1490	}	2366	}
1491		2367
1492	static void	2368	static void
1493	once_cb_io (EV_P_ struct ev_io *w, int revents)	2369	once_cb_io (EV_P_ ev_io *w, int revents)
1494	{	2370	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2371	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496	}	2372	}
1497		2373
1498	static void	2374	static void
1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2375	once_cb_to (EV_P_ ev_timer *w, int revents)
1500	{	2376	{
1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2377	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502	}	2378	}
1503		2379
1504	void	2380	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2381	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506	{	2382	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2383	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508		2384
1509	if (!once)	2385	if (expect_false (!once))
		2386	{
1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2387	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511	else	2388	return;
1512	{	2389	}
		2390
1513	once->cb = cb;	2391	once->cb = cb;
1514	once->arg = arg;	2392	once->arg = arg;
1515		2393
1516	ev_watcher_init (&once->io, once_cb_io);	2394	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	2395	if (fd >= 0)
1518	{	2396	{
1519	ev_io_set (&once->io, fd, events);	2397	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	2398	ev_io_start (EV_A_ &once->io);
1521	}	2399	}
1522		2400
1523	ev_watcher_init (&once->to, once_cb_to);	2401	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	2402	if (timeout >= 0.)
1525	{	2403	{
1526	ev_timer_set (&once->to, timeout, 0.);	2404	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	2405	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	2406	}
1530	}	2407	}
1531		2408
		2409	#if EV_MULTIPLICITY
		2410	#include "ev_wrap.h"
		2411	#endif
		2412
		2413	#ifdef __cplusplus
		2414	}
		2415	#endif
		2416

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