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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.190 by root, Fri Dec 21 01:26:04 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# 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
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# 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
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
		216	#if EV_SELECT_IS_WINSOCKET
		217	# include <winsock.h>
		218	#endif
		219
124	/**/	220	/**/
125		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130		235
131	#include "ev.h"
132
133	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
134	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
135	# define inline inline	238	# define noinline __attribute__ ((noinline))
136	#else	239	#else
137	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
138	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
139	#endif	245	#endif
140		246
141	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
143		256
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
147	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
150		266
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		268
		269	#ifdef _WIN32
153	#include "ev_win32.c"	270	# include "ev_win32.c"
		271	#endif
154		272
155	/*****************************************************************************/	273	/*****************************************************************************/
156		274
157	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
158		276
		277	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	279	{
161	syserr_cb = cb;	280	syserr_cb = cb;
162	}	281	}
163		282
164	static void	283	static void noinline
165	syserr (const char *msg)	284	syserr (const char *msg)
166	{	285	{
167	if (!msg)	286	if (!msg)
168	msg = "(libev) system error";	287	msg = "(libev) system error";
169		288
…		…
176	}	295	}
177	}	296	}
178		297
179	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
180		299
		300	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	302	{
183	alloc = cb;	303	alloc = cb;
184	}	304	}
185		305
186	static void *	306	inline_speed void *
187	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
188	{	308	{
189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190		310
191	if (!ptr && size)	311	if (!ptr && size)
…		…
205	typedef struct	325	typedef struct
206	{	326	{
207	WL head;	327	WL head;
208	unsigned char events;	328	unsigned char events;
209	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
210	} ANFD;	333	} ANFD;
211		334
212	typedef struct	335	typedef struct
213	{	336	{
214	W w;	337	W w;
215	int events;	338	int events;
216	} ANPENDING;	339	} ANPENDING;
217		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
218	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
219		349
220	struct ev_loop	350	struct ev_loop
221	{	351	{
		352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	355	#include "ev_vars.h"
224	};
225	# undef VAR	356	#undef VAR
		357	};
226	# include "ev_wrap.h"	358	#include "ev_wrap.h"
		359
		360	static struct ev_loop default_loop_struct;
		361	struct ev_loop *ev_default_loop_ptr;
227		362
228	#else	363	#else
229		364
		365	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	367	#include "ev_vars.h"
232	# undef VAR	368	#undef VAR
		369
		370	static int ev_default_loop_ptr;
233		371
234	#endif	372	#endif
235		373
236	/*****************************************************************************/	374	/*****************************************************************************/
237		375
238	inline ev_tstamp	376	ev_tstamp
239	ev_time (void)	377	ev_time (void)
240	{	378	{
241	#if EV_USE_REALTIME	379	#if EV_USE_REALTIME
242	struct timespec ts;	380	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	381	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	387	#endif
250	}	388	}
251		389
252	inline ev_tstamp	390	ev_tstamp inline_size
253	get_clock (void)	391	get_clock (void)
254	{	392	{
255	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
257	{	395	{
…		…
262	#endif	400	#endif
263		401
264	return ev_time ();	402	return ev_time ();
265	}	403	}
266		404
		405	#if EV_MULTIPLICITY
267	ev_tstamp	406	ev_tstamp
268	ev_now (EV_P)	407	ev_now (EV_P)
269	{	408	{
270	return rt_now;	409	return ev_rt_now;
271	}	410	}
		411	#endif
272		412
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
274		440
275	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
277	{ \	443	{ \
278	int newcnt = cur; \	444	int ocur_ = (cur); \
279	do \	445	(base) = (type *)array_realloc \
280	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
281	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
282	} \
283	while ((cnt) > newcnt); \
284	\
285	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286	init (base + cur, newcnt - cur); \
287	cur = newcnt; \
288	}	448	}
289		449
		450	#if 0
290	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292	{ \	453	{ \
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	457	}
297		458	#endif
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302		459
303	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		462
306	/*****************************************************************************/	463	/*****************************************************************************/
307		464
308	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
309	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
310	{	495	{
311	while (count--)	496	while (count--)
312	{	497	{
313	base->head = 0;	498	base->head = 0;
…		…
316		501
317	++base;	502	++base;
318	}	503	}
319	}	504	}
320		505
321	void	506	void inline_speed
322	ev_feed_event (EV_P_ void *w, int revents)
323	{
324	W w_ = (W)w;
325
326	if (w_->pending)
327	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;
330	}
331
332	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}
337
338	static void
339	queue_events (EV_P_ W *events, int eventcnt, int type)
340	{
341	int i;
342
343	for (i = 0; i < eventcnt; ++i)
344	ev_feed_event (EV_A_ events [i], type);
345	}
346
347	inline void
348	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
349	{	508	{
350	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	510	ev_io *w;
352		511
353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
354	{	513	{
355	int ev = w->events & revents;	514	int ev = w->events & revents;
356		515
357	if (ev)	516	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
360	}	519	}
361		520
362	void	521	void
363	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
364	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
365	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
366	}	526	}
367		527
368	/*****************************************************************************/	528	void inline_size
369
370	static void
371	fd_reify (EV_P)	529	fd_reify (EV_P)
372	{	530	{
373	int i;	531	int i;
374		532
375	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
376	{	534	{
377	int fd = fdchanges [i];	535	int fd = fdchanges [i];
378	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
379	struct ev_io *w;	537	ev_io *w;
380		538
381	int events = 0;	539	unsigned char events = 0;
382		540
383	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
384	events |= w->events;	542	events |= (unsigned char)w->events;
385		543
		544	#if EV_SELECT_IS_WINSOCKET
		545	if (events)
		546	{
		547	unsigned long argp;
		548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		550	}
		551	#endif
		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
386	anfd->reify = 0;	557	anfd->reify = 0;
387
388	method_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
390	}	563	}
391		564
392	fdchangecnt = 0;	565	fdchangecnt = 0;
393	}	566	}
394		567
395	static void	568	void inline_size
396	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
397	{	570	{
398	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
399	return;
400
401	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
402		573
		574	if (expect_true (!reify))
		575	{
403	++fdchangecnt;	576	++fdchangecnt;
404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
406	}	580	}
407		581
408	static void	582	void inline_speed
409	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
410	{	584	{
411	struct ev_io *w;	585	ev_io *w;
412		586
413	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
414	{	588	{
415	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
416	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
417	}	591	}
418	}	592	}
419		593
420	static int	594	int inline_size
421	fd_valid (int fd)	595	fd_valid (int fd)
422	{	596	{
423	#ifdef WIN32	597	#ifdef _WIN32
424	return !!win32_get_osfhandle (fd);	598	return _get_osfhandle (fd) != -1;
425	#else	599	#else
426	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
427	#endif	601	#endif
428	}	602	}
429		603
430	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
431	static void	605	static void noinline
432	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
433	{	607	{
434	int fd;	608	int fd;
435		609
436	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
438	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
439	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
440	}	614	}
441		615
442	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
443	static void	617	static void noinline
444	fd_enomem (EV_P)	618	fd_enomem (EV_P)
445	{	619	{
446	int fd;	620	int fd;
447		621
448	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
451	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
452	return;	626	return;
453	}	627	}
454	}	628	}
455		629
456	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
457	static void	631	static void noinline
458	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
459	{	633	{
460	int fd;	634	int fd;
461		635
462	/* this should be highly optimised to not do anything but set a flag */
463	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
464	if (anfds [fd].events)	637	if (anfds [fd].events)
465	{	638	{
466	anfds [fd].events = 0;	639	anfds [fd].events = 0;
467	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
468	}	641	}
469	}	642	}
470		643
471	/*****************************************************************************/	644	/*****************************************************************************/
472		645
473	static void	646	void inline_speed
474	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
475	{	648	{
476	WT w = heap [k];	649	WT w = heap [k];
477		650
478	while (k && heap [k >> 1]->at > w->at)	651	while (k)
479	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
480	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
481	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
482	k >>= 1;	660	k = p;
483	}	661	}
484		662
485	heap [k] = w;	663	heap [k] = w;
486	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
487
488	}	665	}
489		666
490	static void	667	void inline_speed
491	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
492	{	669	{
493	WT w = heap [k];	670	WT w = heap [k];
494		671
495	while (k < (N >> 1))	672	for (;;)
496	{	673	{
497	int j = k << 1;	674	int c = (k << 1) + 1;
498		675
499	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
500	++j;
501
502	if (w->at <= heap [j]->at)
503	break;	677	break;
504		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
505	heap [k] = heap [j];	685	heap [k] = heap [c];
506	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
507	k = j;	688	k = c;
508	}	689	}
509		690
510	heap [k] = w;	691	heap [k] = w;
511	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
		693	}
		694
		695	void inline_size
		696	adjustheap (WT *heap, int N, int k)
		697	{
		698	upheap (heap, k);
		699	downheap (heap, N, k);
512	}	700	}
513		701
514	/*****************************************************************************/	702	/*****************************************************************************/
515		703
516	typedef struct	704	typedef struct
…		…
522	static ANSIG *signals;	710	static ANSIG *signals;
523	static int signalmax;	711	static int signalmax;
524		712
525	static int sigpipe [2];	713	static int sigpipe [2];
526	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
527	static struct ev_io sigev;	715	static ev_io sigev;
528		716
529	static void	717	void inline_size
530	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
531	{	719	{
532	while (count--)	720	while (count--)
533	{	721	{
534	base->head = 0;	722	base->head = 0;
…		…
539	}	727	}
540		728
541	static void	729	static void
542	sighandler (int signum)	730	sighandler (int signum)
543	{	731	{
544	#if WIN32	732	#if _WIN32
545	signal (signum, sighandler);	733	signal (signum, sighandler);
546	#endif	734	#endif
547		735
548	signals [signum - 1].gotsig = 1;	736	signals [signum - 1].gotsig = 1;
549		737
550	if (!gotsig)	738	if (!gotsig)
551	{	739	{
552	int old_errno = errno;	740	int old_errno = errno;
553	gotsig = 1;	741	gotsig = 1;
554	#ifdef WIN32
555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556	#else
557	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
558	#endif
559	errno = old_errno;	743	errno = old_errno;
560	}	744	}
561	}	745	}
562		746
563	void	747	void noinline
564	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
565	{	749	{
		750	WL w;
		751
566	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568	#endif	754	#endif
569		755
570	--signum;	756	--signum;
571		757
572	if (signum < 0 || signum >= signalmax)	758	if (signum < 0 || signum >= signalmax)
…		…
577	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
578	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579	}	765	}
580		766
581	static void	767	static void
582	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
583	{	769	{
584	WL w;
585	int signum;	770	int signum;
586		771
587	#ifdef WIN32
588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589	#else
590	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
591	#endif
592	gotsig = 0;	773	gotsig = 0;
593		774
594	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
595	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
596	sigevent (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
597	}	778	}
598		779
599	static void	780	void inline_speed
		781	fd_intern (int fd)
		782	{
		783	#ifdef _WIN32
		784	int arg = 1;
		785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		786	#else
		787	fcntl (fd, F_SETFD, FD_CLOEXEC);
		788	fcntl (fd, F_SETFL, O_NONBLOCK);
		789	#endif
		790	}
		791
		792	static void noinline
600	siginit (EV_P)	793	siginit (EV_P)
601	{	794	{
602	#ifndef WIN32	795	fd_intern (sigpipe [0]);
603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	796	fd_intern (sigpipe [1]);
604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606	/* rather than sort out wether we really need nb, set it */
607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609	#endif
610		797
611	ev_io_set (&sigev, sigpipe [0], EV_READ);	798	ev_io_set (&sigev, sigpipe [0], EV_READ);
612	ev_io_start (EV_A_ &sigev);	799	ev_io_start (EV_A_ &sigev);
613	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
614	}	801	}
615		802
616	/*****************************************************************************/	803	/*****************************************************************************/
617		804
618	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
619		806
620	#ifndef WIN32	807	#ifndef _WIN32
621		808
622	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
623		825
624	#ifndef WCONTINUED	826	#ifndef WCONTINUED
625	# define WCONTINUED 0	827	# define WCONTINUED 0
626	#endif	828	#endif
627		829
628	static void	830	static void
629	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
630	{
631	struct ev_child *w;
632
633	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
634	if (w->pid == pid || !w->pid)
635	{
636	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637	w->rpid = pid;
638	w->rstatus = status;
639	ev_feed_event (EV_A_ (W)w, EV_CHILD);
640	}
641	}
642
643	static void
644	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
645	{	832	{
646	int pid, status;	833	int pid, status;
647		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
650	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652		845
653	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655	}
656	}	849	}
657		850
658	#endif	851	#endif
659		852
660	/*****************************************************************************/	853	/*****************************************************************************/
661		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
662	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
664	#endif	860	#endif
665	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	862	# include "ev_epoll.c"
…		…
683	{	879	{
684	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
685	}	881	}
686		882
687	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
688	static int	884	int inline_size
689	enable_secure (void)	885	enable_secure (void)
690	{	886	{
691	#ifdef WIN32	887	#ifdef _WIN32
692	return 0;	888	return 0;
693	#else	889	#else
694	return getuid () != geteuid ()	890	return getuid () != geteuid ()
695	|| getgid () != getegid ();	891	|| getgid () != getegid ();
696	#endif	892	#endif
697	}	893	}
698		894
699	int	895	unsigned int
700	ev_method (EV_P)	896	ev_supported_backends (void)
701	{	897	{
702	return method;	898	unsigned int flags = 0;
703	}
704		899
705	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
706	loop_init (EV_P_ int methods)	901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
707	{	911	{
708	if (!method)	912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
		948	loop_init (EV_P_ unsigned int flags)
		949	{
		950	if (!backend)
709	{	951	{
710	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
711	{	953	{
712	struct timespec ts;	954	struct timespec ts;
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	956	have_monotonic = 1;
715	}	957	}
716	#endif	958	#endif
717		959
718	rt_now = ev_time ();	960	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	961	mn_now = get_clock ();
720	now_floor = mn_now;	962	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
722		964
723	if (methods == EVMETHOD_AUTO)	965	/* pid check not overridable via env */
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else
727	methods = EVMETHOD_ANY;
728		975
729	method = 0;	976	if (!(flags & 0x0000ffffUL))
		977	flags |= ev_recommended_backends ();
		978
		979	backend = 0;
		980	backend_fd = -1;
730	#if EV_USE_WIN32	981	#if EV_USE_INOTIFY
731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732	#endif	987	#endif
733	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735	#endif	990	#endif
736	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738	#endif	993	#endif
739	#if EV_USE_POLL	994	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741	#endif	996	#endif
742	#if EV_USE_SELECT	997	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744	#endif	999	#endif
745		1000
746	ev_watcher_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
748	}	1003	}
749	}	1004	}
750		1005
751	void	1006	static void noinline
752	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
753	{	1008	{
754	int i;	1009	int i;
755		1010
756	#if EV_USE_WIN32	1011	#if EV_USE_INOTIFY
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	1021	#endif
759	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	1024	#endif
762	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	1027	#endif
765	#if EV_USE_POLL	1028	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	1030	#endif
768	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	1033	#endif
771		1034
772	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
773	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
774		1044
775	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	1046	array_free (fdchange, EMPTY);
777	array_free_microshit (timer);	1047	array_free (timer, EMPTY);
778	array_free_microshit (periodic);	1048	#if EV_PERIODIC_ENABLE
779	array_free_microshit (idle);	1049	array_free (periodic, EMPTY);
780	array_free_microshit (prepare);	1050	#endif
781	array_free_microshit (check);	1051	#if EV_FORK_ENABLE
		1052	array_free (fork, EMPTY);
		1053	#endif
		1054	array_free (prepare, EMPTY);
		1055	array_free (check, EMPTY);
782		1056
783	method = 0;	1057	backend = 0;
784	}	1058	}
785		1059
786	static void	1060	void inline_size infy_fork (EV_P);
		1061
		1062	void inline_size
787	loop_fork (EV_P)	1063	loop_fork (EV_P)
788	{	1064	{
		1065	#if EV_USE_PORT
		1066	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_KQUEUE
		1069	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1070	#endif
789	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1072	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif	1073	#endif
792	#if EV_USE_KQUEUE	1074	#if EV_USE_INOTIFY
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1075	infy_fork (EV_A);
794	#endif	1076	#endif
795		1077
796	if (ev_is_active (&sigev))	1078	if (ev_is_active (&sigev))
797	{	1079	{
798	/* default loop */	1080	/* default loop */
…		…
811	postfork = 0;	1093	postfork = 0;
812	}	1094	}
813		1095
814	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
815	struct ev_loop *	1097	struct ev_loop *
816	ev_loop_new (int methods)	1098	ev_loop_new (unsigned int flags)
817	{	1099	{
818	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1100	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819		1101
820	memset (loop, 0, sizeof (struct ev_loop));	1102	memset (loop, 0, sizeof (struct ev_loop));
821		1103
822	loop_init (EV_A_ methods);	1104	loop_init (EV_A_ flags);
823		1105
824	if (ev_method (EV_A))	1106	if (ev_backend (EV_A))
825	return loop;	1107	return loop;
826		1108
827	return 0;	1109	return 0;
828	}	1110	}
829		1111
…		…
841	}	1123	}
842		1124
843	#endif	1125	#endif
844		1126
845	#if EV_MULTIPLICITY	1127	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	1128	struct ev_loop *
		1129	ev_default_loop_init (unsigned int flags)
850	#else	1130	#else
851	static int default_loop;
852
853	int	1131	int
		1132	ev_default_loop (unsigned int flags)
854	#endif	1133	#endif
855	ev_default_loop (int methods)
856	{	1134	{
857	if (sigpipe [0] == sigpipe [1])	1135	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	1136	if (pipe (sigpipe))
859	return 0;	1137	return 0;
860		1138
861	if (!default_loop)	1139	if (!ev_default_loop_ptr)
862	{	1140	{
863	#if EV_MULTIPLICITY	1141	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	1143	#else
866	default_loop = 1;	1144	ev_default_loop_ptr = 1;
867	#endif	1145	#endif
868		1146
869	loop_init (EV_A_ methods);	1147	loop_init (EV_A_ flags);
870		1148
871	if (ev_method (EV_A))	1149	if (ev_backend (EV_A))
872	{	1150	{
873	siginit (EV_A);	1151	siginit (EV_A);
874		1152
875	#ifndef WIN32	1153	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	1154	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	1155	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	1156	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	1157	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	1158	#endif
881	}	1159	}
882	else	1160	else
883	default_loop = 0;	1161	ev_default_loop_ptr = 0;
884	}	1162	}
885		1163
886	return default_loop;	1164	return ev_default_loop_ptr;
887	}	1165	}
888		1166
889	void	1167	void
890	ev_default_destroy (void)	1168	ev_default_destroy (void)
891	{	1169	{
892	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1171	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1172	#endif
895		1173
896	#ifndef WIN32	1174	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1175	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1176	ev_signal_stop (EV_A_ &childev);
899	#endif	1177	#endif
900		1178
901	ev_ref (EV_A); /* signal watcher */	1179	ev_ref (EV_A); /* signal watcher */
…		…
909		1187
910	void	1188	void
911	ev_default_fork (void)	1189	ev_default_fork (void)
912	{	1190	{
913	#if EV_MULTIPLICITY	1191	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1192	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1193	#endif
916		1194
917	if (method)	1195	if (backend)
918	postfork = 1;	1196	postfork = 1;
919	}	1197	}
920		1198
921	/*****************************************************************************/	1199	/*****************************************************************************/
922		1200
923	static int	1201	void
924	any_pending (EV_P)	1202	ev_invoke (EV_P_ void *w, int revents)
925	{	1203	{
926	int pri;	1204	EV_CB_INVOKE ((W)w, revents);
927
928	for (pri = NUMPRI; pri--; )
929	if (pendingcnt [pri])
930	return 1;
931
932	return 0;
933	}	1205	}
934		1206
935	static void	1207	void inline_speed
936	call_pending (EV_P)	1208	call_pending (EV_P)
937	{	1209	{
938	int pri;	1210	int pri;
939		1211
940	for (pri = NUMPRI; pri--; )	1212	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1213	while (pendingcnt [pri])
942	{	1214	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1215	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1216
945	if (p->w)	1217	if (expect_true (p->w))
946	{	1218	{
		1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1220
947	p->w->pending = 0;	1221	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1222	EV_CB_INVOKE (p->w, p->events);
949	}	1223	}
950	}	1224	}
951	}	1225	}
952		1226
953	static void	1227	void inline_size
954	timers_reify (EV_P)	1228	timers_reify (EV_P)
955	{	1229	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1231	{
958	struct ev_timer *w = timers [0];	1232	ev_timer *w = (ev_timer *)timers [0];
959		1233
960	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
961		1235
962	/* first reschedule or stop timer */	1236	/* first reschedule or stop timer */
963	if (w->repeat)	1237	if (w->repeat)
964	{	1238	{
965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1240
966	((WT)w)->at = mn_now + w->repeat;	1241	((WT)w)->at += w->repeat;
		1242	if (((WT)w)->at < mn_now)
		1243	((WT)w)->at = mn_now;
		1244
967	downheap ((WT *)timers, timercnt, 0);	1245	downheap (timers, timercnt, 0);
968	}	1246	}
969	else	1247	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1249
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1251	}
974	}	1252	}
975		1253
976	static void	1254	#if EV_PERIODIC_ENABLE
		1255	void inline_size
977	periodics_reify (EV_P)	1256	periodics_reify (EV_P)
978	{	1257	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1259	{
981	struct ev_periodic *w = periodics [0];	1260	ev_periodic *w = (ev_periodic *)periodics [0];
982		1261
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
984		1263
985	/* first reschedule or stop timer */	1264	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1265	if (w->reschedule_cb)
987	{	1266	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
989
990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1269	downheap (periodics, periodiccnt, 0);
992	}	1270	}
993	else if (w->interval)	1271	else if (w->interval)
994	{	1272	{
995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
996	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997	downheap ((WT *)periodics, periodiccnt, 0);	1276	downheap (periodics, periodiccnt, 0);
998	}	1277	}
999	else	1278	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1280
1002	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1003	}	1282	}
1004	}	1283	}
1005		1284
1006	static void	1285	static void noinline
1007	periodics_reschedule (EV_P)	1286	periodics_reschedule (EV_P)
1008	{	1287	{
1009	int i;	1288	int i;
1010		1289
1011	/* adjust periodics after time jump */	1290	/* adjust periodics after time jump */
1012	for (i = 0; i < periodiccnt; ++i)	1291	for (i = 0; i < periodiccnt; ++i)
1013	{	1292	{
1014	struct ev_periodic *w = periodics [i];	1293	ev_periodic *w = (ev_periodic *)periodics [i];
1015		1294
1016	if (w->reschedule_cb)	1295	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1297	else if (w->interval)
1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1020	}	1299	}
1021		1300
1022	/* now rebuild the heap */	1301	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1302	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1303	downheap (periodics, periodiccnt, i);
1025	}	1304	}
		1305	#endif
1026		1306
1027	inline int	1307	#if EV_IDLE_ENABLE
1028	time_update_monotonic (EV_P)	1308	void inline_size
		1309	idle_reify (EV_P)
1029	{	1310	{
1030	mn_now = get_clock ();	1311	if (expect_false (idleall))
1031
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{
1034	rt_now = rtmn_diff + mn_now;
1035	return 0;
1036	}	1312	{
1037	else	1313	int pri;
		1314
		1315	for (pri = NUMPRI; pri--; )
		1316	{
		1317	if (pendingcnt [pri])
		1318	break;
		1319
		1320	if (idlecnt [pri])
		1321	{
		1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1323	break;
		1324	}
		1325	}
1038	{	1326	}
1039	now_floor = mn_now;
1040	rt_now = ev_time ();
1041	return 1;
1042	}
1043	}	1327	}
		1328	#endif
1044		1329
1045	static void	1330	void inline_speed
1046	time_update (EV_P)	1331	time_update (EV_P_ ev_tstamp max_block)
1047	{	1332	{
1048	int i;	1333	int i;
1049		1334
1050	#if EV_USE_MONOTONIC	1335	#if EV_USE_MONOTONIC
1051	if (expect_true (have_monotonic))	1336	if (expect_true (have_monotonic))
1052	{	1337	{
1053	if (time_update_monotonic (EV_A))	1338	ev_tstamp odiff = rtmn_diff;
		1339
		1340	mn_now = get_clock ();
		1341
		1342	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1343	/* interpolate in the meantime */
		1344	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1054	{	1345	{
1055	ev_tstamp odiff = rtmn_diff;	1346	ev_rt_now = rtmn_diff + mn_now;
		1347	return;
		1348	}
1056		1349
		1350	now_floor = mn_now;
		1351	ev_rt_now = ev_time ();
		1352
1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1353	/* loop a few times, before making important decisions.
		1354	* on the choice of "4": one iteration isn't enough,
		1355	* in case we get preempted during the calls to
		1356	* ev_time and get_clock. a second call is almost guaranteed
		1357	* to succeed in that case, though. and looping a few more times
		1358	* doesn't hurt either as we only do this on time-jumps or
		1359	* in the unlikely event of having been preempted here.
		1360	*/
		1361	for (i = 4; --i; )
1058	{	1362	{
1059	rtmn_diff = rt_now - mn_now;	1363	rtmn_diff = ev_rt_now - mn_now;
1060		1364
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1366	return; /* all is well */
1063		1367
1064	rt_now = ev_time ();	1368	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1369	mn_now = get_clock ();
1066	now_floor = mn_now;	1370	now_floor = mn_now;
1067	}	1371	}
1068		1372
		1373	# if EV_PERIODIC_ENABLE
		1374	periodics_reschedule (EV_A);
		1375	# endif
		1376	/* no timer adjustment, as the monotonic clock doesn't jump */
		1377	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1378	}
		1379	else
		1380	#endif
		1381	{
		1382	ev_rt_now = ev_time ();
		1383
		1384	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1385	{
		1386	#if EV_PERIODIC_ENABLE
1069	periodics_reschedule (EV_A);	1387	periodics_reschedule (EV_A);
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1388	#endif
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1389	/* adjust timers. this is easy, as the offset is the same for all of them */
		1390	for (i = 0; i < timercnt; ++i)
		1391	((WT)timers [i])->at += ev_rt_now - mn_now;
1072	}	1392	}
1073	}
1074	else
1075	#endif
1076	{
1077	rt_now = ev_time ();
1078		1393
1079	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080	{
1081	periodics_reschedule (EV_A);
1082
1083	/* adjust timers. this is easy, as the offset is the same for all */
1084	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;
1086	}
1087
1088	mn_now = rt_now;	1394	mn_now = ev_rt_now;
1089	}	1395	}
1090	}	1396	}
1091		1397
1092	void	1398	void
1093	ev_ref (EV_P)	1399	ev_ref (EV_P)
…		…
1104	static int loop_done;	1410	static int loop_done;
1105		1411
1106	void	1412	void
1107	ev_loop (EV_P_ int flags)	1413	ev_loop (EV_P_ int flags)
1108	{	1414	{
1109	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1416	? EVUNLOOP_ONE
		1417	: EVUNLOOP_CANCEL;
		1418
		1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1111		1420
1112	do	1421	do
1113	{	1422	{
		1423	#ifndef _WIN32
		1424	if (expect_false (curpid)) /* penalise the forking check even more */
		1425	if (expect_false (getpid () != curpid))
		1426	{
		1427	curpid = getpid ();
		1428	postfork = 1;
		1429	}
		1430	#endif
		1431
		1432	#if EV_FORK_ENABLE
		1433	/* we might have forked, so queue fork handlers */
		1434	if (expect_false (postfork))
		1435	if (forkcnt)
		1436	{
		1437	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1438	call_pending (EV_A);
		1439	}
		1440	#endif
		1441
1114	/* queue check watchers (and execute them) */	1442	/* queue prepare watchers (and execute them) */
1115	if (expect_false (preparecnt))	1443	if (expect_false (preparecnt))
1116	{	1444	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1445	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1118	call_pending (EV_A);	1446	call_pending (EV_A);
1119	}	1447	}
1120		1448
		1449	if (expect_false (!activecnt))
		1450	break;
		1451
1121	/* we might have forked, so reify kernel state if necessary */	1452	/* we might have forked, so reify kernel state if necessary */
1122	if (expect_false (postfork))	1453	if (expect_false (postfork))
1123	loop_fork (EV_A);	1454	loop_fork (EV_A);
1124		1455
1125	/* update fd-related kernel structures */	1456	/* update fd-related kernel structures */
1126	fd_reify (EV_A);	1457	fd_reify (EV_A);
1127		1458
1128	/* calculate blocking time */	1459	/* calculate blocking time */
		1460	{
		1461	ev_tstamp block;
1129		1462
1130	/* we only need this for !monotonic clock or timers, but as we basically	1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1131	always have timers, we just calculate it always */	1464	block = 0.; /* do not block at all */
1132	#if EV_USE_MONOTONIC
1133	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);
1135	else	1465	else
1136	#endif
1137	{	1466	{
1138	rt_now = ev_time ();	1467	/* update time to cancel out callback processing overhead */
1139	mn_now = rt_now;	1468	time_update (EV_A_ 1e100);
1140	}
1141		1469
1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
1143	block = 0.;
1144	else
1145	{
1146	block = MAX_BLOCKTIME;	1470	block = MAX_BLOCKTIME;
1147		1471
1148	if (timercnt)	1472	if (timercnt)
1149	{	1473	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151	if (block > to) block = to;	1475	if (block > to) block = to;
1152	}	1476	}
1153		1477
		1478	#if EV_PERIODIC_ENABLE
1154	if (periodiccnt)	1479	if (periodiccnt)
1155	{	1480	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157	if (block > to) block = to;	1482	if (block > to) block = to;
1158	}	1483	}
		1484	#endif
1159		1485
1160	if (block < 0.) block = 0.;	1486	if (expect_false (block < 0.)) block = 0.;
1161	}	1487	}
1162		1488
		1489	++loop_count;
1163	method_poll (EV_A_ block);	1490	backend_poll (EV_A_ block);
1164		1491
1165	/* update rt_now, do magic */	1492	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1493	time_update (EV_A_ block);
		1494	}
1167		1495
1168	/* queue pending timers and reschedule them */	1496	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1497	timers_reify (EV_A); /* relative timers called last */
		1498	#if EV_PERIODIC_ENABLE
1170	periodics_reify (EV_A); /* absolute timers called first */	1499	periodics_reify (EV_A); /* absolute timers called first */
		1500	#endif
1171		1501
		1502	#if EV_IDLE_ENABLE
1172	/* queue idle watchers unless io or timers are pending */	1503	/* queue idle watchers unless other events are pending */
1173	if (idlecnt && !any_pending (EV_A))	1504	idle_reify (EV_A);
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1505	#endif
1175		1506
1176	/* queue check watchers, to be executed first */	1507	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1508	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1510
1180	call_pending (EV_A);	1511	call_pending (EV_A);
		1512
1181	}	1513	}
1182	while (activecnt && !loop_done);	1514	while (expect_true (activecnt && !loop_done));
1183		1515
1184	if (loop_done != 2)	1516	if (loop_done == EVUNLOOP_ONE)
1185	loop_done = 0;	1517	loop_done = EVUNLOOP_CANCEL;
1186	}	1518	}
1187		1519
1188	void	1520	void
1189	ev_unloop (EV_P_ int how)	1521	ev_unloop (EV_P_ int how)
1190	{	1522	{
1191	loop_done = how;	1523	loop_done = how;
1192	}	1524	}
1193		1525
1194	/*****************************************************************************/	1526	/*****************************************************************************/
1195		1527
1196	inline void	1528	void inline_size
1197	wlist_add (WL *head, WL elem)	1529	wlist_add (WL *head, WL elem)
1198	{	1530	{
1199	elem->next = *head;	1531	elem->next = *head;
1200	*head = elem;	1532	*head = elem;
1201	}	1533	}
1202		1534
1203	inline void	1535	void inline_size
1204	wlist_del (WL *head, WL elem)	1536	wlist_del (WL *head, WL elem)
1205	{	1537	{
1206	while (*head)	1538	while (*head)
1207	{	1539	{
1208	if (*head == elem)	1540	if (*head == elem)
…		…
1213		1545
1214	head = &(*head)->next;	1546	head = &(*head)->next;
1215	}	1547	}
1216	}	1548	}
1217		1549
1218	inline void	1550	void inline_speed
1219	ev_clear_pending (EV_P_ W w)	1551	clear_pending (EV_P_ W w)
1220	{	1552	{
1221	if (w->pending)	1553	if (w->pending)
1222	{	1554	{
1223	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1555	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1224	w->pending = 0;	1556	w->pending = 0;
1225	}	1557	}
1226	}	1558	}
1227		1559
1228	inline void	1560	int
		1561	ev_clear_pending (EV_P_ void *w)
		1562	{
		1563	W w_ = (W)w;
		1564	int pending = w_->pending;
		1565
		1566	if (expect_true (pending))
		1567	{
		1568	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1569	w_->pending = 0;
		1570	p->w = 0;
		1571	return p->events;
		1572	}
		1573	else
		1574	return 0;
		1575	}
		1576
		1577	void inline_size
		1578	pri_adjust (EV_P_ W w)
		1579	{
		1580	int pri = w->priority;
		1581	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1582	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1583	w->priority = pri;
		1584	}
		1585
		1586	void inline_speed
1229	ev_start (EV_P_ W w, int active)	1587	ev_start (EV_P_ W w, int active)
1230	{	1588	{
1231	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1589	pri_adjust (EV_A_ w);
1232	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1233
1234	w->active = active;	1590	w->active = active;
1235	ev_ref (EV_A);	1591	ev_ref (EV_A);
1236	}	1592	}
1237		1593
1238	inline void	1594	void inline_size
1239	ev_stop (EV_P_ W w)	1595	ev_stop (EV_P_ W w)
1240	{	1596	{
1241	ev_unref (EV_A);	1597	ev_unref (EV_A);
1242	w->active = 0;	1598	w->active = 0;
1243	}	1599	}
1244		1600
1245	/*****************************************************************************/	1601	/*****************************************************************************/
1246		1602
1247	void	1603	void noinline
1248	ev_io_start (EV_P_ struct ev_io *w)	1604	ev_io_start (EV_P_ ev_io *w)
1249	{	1605	{
1250	int fd = w->fd;	1606	int fd = w->fd;
1251		1607
1252	if (ev_is_active (w))	1608	if (expect_false (ev_is_active (w)))
1253	return;	1609	return;
1254		1610
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1611	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1612
1257	ev_start (EV_A_ (W)w, 1);	1613	ev_start (EV_A_ (W)w, 1);
1258	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1259	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1615	wlist_add (&anfds[fd].head, (WL)w);
1260		1616
1261	fd_change (EV_A_ fd);	1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1618	w->events &= ~EV_IOFDSET;
1262	}	1619	}
1263		1620
1264	void	1621	void noinline
1265	ev_io_stop (EV_P_ struct ev_io *w)	1622	ev_io_stop (EV_P_ ev_io *w)
1266	{	1623	{
1267	ev_clear_pending (EV_A_ (W)w);	1624	clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1625	if (expect_false (!ev_is_active (w)))
1269	return;	1626	return;
1270		1627
		1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1629
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1630	wlist_del (&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1273		1632
1274	fd_change (EV_A_ w->fd);	1633	fd_change (EV_A_ w->fd, 1);
1275	}	1634	}
1276		1635
1277	void	1636	void noinline
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1637	ev_timer_start (EV_P_ ev_timer *w)
1279	{	1638	{
1280	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1281	return;	1640	return;
1282		1641
1283	((WT)w)->at += mn_now;	1642	((WT)w)->at += mn_now;
1284		1643
1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286		1645
1287	ev_start (EV_A_ (W)w, ++timercnt);	1646	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1648	timers [timercnt - 1] = (WT)w;
1290	upheap ((WT *)timers, timercnt - 1);	1649	upheap (timers, timercnt - 1);
1291		1650
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1293	}	1652	}
1294		1653
1295	void	1654	void noinline
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1655	ev_timer_stop (EV_P_ ev_timer *w)
1297	{	1656	{
1298	ev_clear_pending (EV_A_ (W)w);	1657	clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1658	if (expect_false (!ev_is_active (w)))
1300	return;	1659	return;
1301		1660
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1303		1662
1304	if (((W)w)->active < timercnt--)	1663	{
		1664	int active = ((W)w)->active;
		1665
		1666	if (expect_true (--active < --timercnt))
1305	{	1667	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1668	timers [active] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1669	adjustheap (timers, timercnt, active);
1308	}	1670	}
		1671	}
1309		1672
1310	((WT)w)->at = w->repeat;	1673	((WT)w)->at -= mn_now;
1311		1674
1312	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1313	}	1676	}
1314		1677
1315	void	1678	void noinline
1316	ev_timer_again (EV_P_ struct ev_timer *w)	1679	ev_timer_again (EV_P_ ev_timer *w)
1317	{	1680	{
1318	if (ev_is_active (w))	1681	if (ev_is_active (w))
1319	{	1682	{
1320	if (w->repeat)	1683	if (w->repeat)
1321	{	1684	{
1322	((WT)w)->at = mn_now + w->repeat;	1685	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1686	adjustheap (timers, timercnt, ((W)w)->active - 1);
1324	}	1687	}
1325	else	1688	else
1326	ev_timer_stop (EV_A_ w);	1689	ev_timer_stop (EV_A_ w);
1327	}	1690	}
1328	else if (w->repeat)	1691	else if (w->repeat)
		1692	{
		1693	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1694	ev_timer_start (EV_A_ w);
		1695	}
1330	}	1696	}
1331		1697
1332	void	1698	#if EV_PERIODIC_ENABLE
		1699	void noinline
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1700	ev_periodic_start (EV_P_ ev_periodic *w)
1334	{	1701	{
1335	if (ev_is_active (w))	1702	if (expect_false (ev_is_active (w)))
1336	return;	1703	return;
1337		1704
1338	if (w->reschedule_cb)	1705	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1707	else if (w->interval)
1341	{	1708	{
1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343	/* this formula differs from the one in periodic_reify because we do not always round up */	1710	/* this formula differs from the one in periodic_reify because we do not always round up */
1344	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1345	}	1712	}
		1713	else
		1714	((WT)w)->at = w->offset;
1346		1715
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1716	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1718	periodics [periodiccnt - 1] = (WT)w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1719	upheap (periodics, periodiccnt - 1);
1351		1720
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1353	}	1722	}
1354		1723
1355	void	1724	void noinline
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1725	ev_periodic_stop (EV_P_ ev_periodic *w)
1357	{	1726	{
1358	ev_clear_pending (EV_A_ (W)w);	1727	clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1728	if (expect_false (!ev_is_active (w)))
1360	return;	1729	return;
1361		1730
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1363		1732
1364	if (((W)w)->active < periodiccnt--)	1733	{
		1734	int active = ((W)w)->active;
		1735
		1736	if (expect_true (--active < --periodiccnt))
1365	{	1737	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1738	periodics [active] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1739	adjustheap (periodics, periodiccnt, active);
1368	}	1740	}
		1741	}
1369		1742
1370	ev_stop (EV_A_ (W)w);	1743	ev_stop (EV_A_ (W)w);
1371	}	1744	}
1372		1745
1373	void	1746	void noinline
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1747	ev_periodic_again (EV_P_ ev_periodic *w)
1375	{	1748	{
		1749	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1750	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1751	ev_periodic_start (EV_A_ w);
1378	}	1752	}
1379		1753	#endif
1380	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)
1382	{
1383	if (ev_is_active (w))
1384	return;
1385
1386	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388	idles [idlecnt - 1] = w;
1389	}
1390
1391	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)
1393	{
1394	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))
1396	return;
1397
1398	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);
1400	}
1401
1402	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)
1404	{
1405	if (ev_is_active (w))
1406	return;
1407
1408	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410	prepares [preparecnt - 1] = w;
1411	}
1412
1413	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415	{
1416	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))
1418	return;
1419
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);
1422	}
1423
1424	void
1425	ev_check_start (EV_P_ struct ev_check *w)
1426	{
1427	if (ev_is_active (w))
1428	return;
1429
1430	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432	checks [checkcnt - 1] = w;
1433	}
1434
1435	void
1436	ev_check_stop (EV_P_ struct ev_check *w)
1437	{
1438	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))
1440	return;
1441
1442	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);
1444	}
1445		1754
1446	#ifndef SA_RESTART	1755	#ifndef SA_RESTART
1447	# define SA_RESTART 0	1756	# define SA_RESTART 0
1448	#endif	1757	#endif
1449		1758
1450	void	1759	void noinline
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1760	ev_signal_start (EV_P_ ev_signal *w)
1452	{	1761	{
1453	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1763	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1764	#endif
1456	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1457	return;	1766	return;
1458		1767
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1769
		1770	{
		1771	#ifndef _WIN32
		1772	sigset_t full, prev;
		1773	sigfillset (&full);
		1774	sigprocmask (SIG_SETMASK, &full, &prev);
		1775	#endif
		1776
		1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1778
		1779	#ifndef _WIN32
		1780	sigprocmask (SIG_SETMASK, &prev, 0);
		1781	#endif
		1782	}
		1783
1461	ev_start (EV_A_ (W)w, 1);	1784	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1785	wlist_add (&signals [w->signum - 1].head, (WL)w);
1464		1786
1465	if (!((WL)w)->next)	1787	if (!((WL)w)->next)
1466	{	1788	{
1467	#if WIN32	1789	#if _WIN32
1468	signal (w->signum, sighandler);	1790	signal (w->signum, sighandler);
1469	#else	1791	#else
1470	struct sigaction sa;	1792	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1793	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1794	sigfillset (&sa.sa_mask);
…		…
1474	sigaction (w->signum, &sa, 0);	1796	sigaction (w->signum, &sa, 0);
1475	#endif	1797	#endif
1476	}	1798	}
1477	}	1799	}
1478		1800
1479	void	1801	void noinline
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1802	ev_signal_stop (EV_P_ ev_signal *w)
1481	{	1803	{
1482	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1805	if (expect_false (!ev_is_active (w)))
1484	return;	1806	return;
1485		1807
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1808	wlist_del (&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1809	ev_stop (EV_A_ (W)w);
1488		1810
1489	if (!signals [w->signum - 1].head)	1811	if (!signals [w->signum - 1].head)
1490	signal (w->signum, SIG_DFL);	1812	signal (w->signum, SIG_DFL);
1491	}	1813	}
1492		1814
1493	void	1815	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1816	ev_child_start (EV_P_ ev_child *w)
1495	{	1817	{
1496	#if EV_MULTIPLICITY	1818	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1820	#endif
1499	if (ev_is_active (w))	1821	if (expect_false (ev_is_active (w)))
1500	return;	1822	return;
1501		1823
1502	ev_start (EV_A_ (W)w, 1);	1824	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1504	}	1826	}
1505		1827
1506	void	1828	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1829	ev_child_stop (EV_P_ ev_child *w)
1508	{	1830	{
1509	ev_clear_pending (EV_A_ (W)w);	1831	clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1832	if (expect_false (!ev_is_active (w)))
1511	return;	1833	return;
1512		1834
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1836	ev_stop (EV_A_ (W)w);
1515	}	1837	}
1516		1838
		1839	#if EV_STAT_ENABLE
		1840
		1841	# ifdef _WIN32
		1842	# undef lstat
		1843	# define lstat(a,b) _stati64 (a,b)
		1844	# endif
		1845
		1846	#define DEF_STAT_INTERVAL 5.0074891
		1847	#define MIN_STAT_INTERVAL 0.1074891
		1848
		1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1850
		1851	#if EV_USE_INOTIFY
		1852	# define EV_INOTIFY_BUFSIZE 8192
		1853
		1854	static void noinline
		1855	infy_add (EV_P_ ev_stat *w)
		1856	{
		1857	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);
		1858
		1859	if (w->wd < 0)
		1860	{
		1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1862
		1863	/* monitor some parent directory for speedup hints */
		1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1865	{
		1866	char path [4096];
		1867	strcpy (path, w->path);
		1868
		1869	do
		1870	{
		1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1873
		1874	char *pend = strrchr (path, '/');
		1875
		1876	if (!pend)
		1877	break; /* whoops, no '/', complain to your admin */
		1878
		1879	*pend = 0;
		1880	w->wd = inotify_add_watch (fs_fd, path, mask);
		1881	}
		1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1883	}
		1884	}
		1885	else
		1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1887
		1888	if (w->wd >= 0)
		1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1890	}
		1891
		1892	static void noinline
		1893	infy_del (EV_P_ ev_stat *w)
		1894	{
		1895	int slot;
		1896	int wd = w->wd;
		1897
		1898	if (wd < 0)
		1899	return;
		1900
		1901	w->wd = -2;
		1902	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1903	wlist_del (&fs_hash [slot].head, (WL)w);
		1904
		1905	/* remove this watcher, if others are watching it, they will rearm */
		1906	inotify_rm_watch (fs_fd, wd);
		1907	}
		1908
		1909	static void noinline
		1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1911	{
		1912	if (slot < 0)
		1913	/* overflow, need to check for all hahs slots */
		1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1915	infy_wd (EV_A_ slot, wd, ev);
		1916	else
		1917	{
		1918	WL w_;
		1919
		1920	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1921	{
		1922	ev_stat *w = (ev_stat *)w_;
		1923	w_ = w_->next; /* lets us remove this watcher and all before it */
		1924
		1925	if (w->wd == wd || wd == -1)
		1926	{
		1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1928	{
		1929	w->wd = -1;
		1930	infy_add (EV_A_ w); /* re-add, no matter what */
		1931	}
		1932
		1933	stat_timer_cb (EV_A_ &w->timer, 0);
		1934	}
		1935	}
		1936	}
		1937	}
		1938
		1939	static void
		1940	infy_cb (EV_P_ ev_io *w, int revents)
		1941	{
		1942	char buf [EV_INOTIFY_BUFSIZE];
		1943	struct inotify_event *ev = (struct inotify_event *)buf;
		1944	int ofs;
		1945	int len = read (fs_fd, buf, sizeof (buf));
		1946
		1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1949	}
		1950
		1951	void inline_size
		1952	infy_init (EV_P)
		1953	{
		1954	if (fs_fd != -2)
		1955	return;
		1956
		1957	fs_fd = inotify_init ();
		1958
		1959	if (fs_fd >= 0)
		1960	{
		1961	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1962	ev_set_priority (&fs_w, EV_MAXPRI);
		1963	ev_io_start (EV_A_ &fs_w);
		1964	}
		1965	}
		1966
		1967	void inline_size
		1968	infy_fork (EV_P)
		1969	{
		1970	int slot;
		1971
		1972	if (fs_fd < 0)
		1973	return;
		1974
		1975	close (fs_fd);
		1976	fs_fd = inotify_init ();
		1977
		1978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1979	{
		1980	WL w_ = fs_hash [slot].head;
		1981	fs_hash [slot].head = 0;
		1982
		1983	while (w_)
		1984	{
		1985	ev_stat *w = (ev_stat *)w_;
		1986	w_ = w_->next; /* lets us add this watcher */
		1987
		1988	w->wd = -1;
		1989
		1990	if (fs_fd >= 0)
		1991	infy_add (EV_A_ w); /* re-add, no matter what */
		1992	else
		1993	ev_timer_start (EV_A_ &w->timer);
		1994	}
		1995
		1996	}
		1997	}
		1998
		1999	#endif
		2000
		2001	void
		2002	ev_stat_stat (EV_P_ ev_stat *w)
		2003	{
		2004	if (lstat (w->path, &w->attr) < 0)
		2005	w->attr.st_nlink = 0;
		2006	else if (!w->attr.st_nlink)
		2007	w->attr.st_nlink = 1;
		2008	}
		2009
		2010	static void noinline
		2011	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2012	{
		2013	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2014
		2015	/* we copy this here each the time so that */
		2016	/* prev has the old value when the callback gets invoked */
		2017	w->prev = w->attr;
		2018	ev_stat_stat (EV_A_ w);
		2019
		2020	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2021	if (
		2022	w->prev.st_dev != w->attr.st_dev
		2023	|| w->prev.st_ino != w->attr.st_ino
		2024	|| w->prev.st_mode != w->attr.st_mode
		2025	|| w->prev.st_nlink != w->attr.st_nlink
		2026	|| w->prev.st_uid != w->attr.st_uid
		2027	|| w->prev.st_gid != w->attr.st_gid
		2028	|| w->prev.st_rdev != w->attr.st_rdev
		2029	|| w->prev.st_size != w->attr.st_size
		2030	|| w->prev.st_atime != w->attr.st_atime
		2031	|| w->prev.st_mtime != w->attr.st_mtime
		2032	|| w->prev.st_ctime != w->attr.st_ctime
		2033	) {
		2034	#if EV_USE_INOTIFY
		2035	infy_del (EV_A_ w);
		2036	infy_add (EV_A_ w);
		2037	ev_stat_stat (EV_A_ w); /* avoid race... */
		2038	#endif
		2039
		2040	ev_feed_event (EV_A_ w, EV_STAT);
		2041	}
		2042	}
		2043
		2044	void
		2045	ev_stat_start (EV_P_ ev_stat *w)
		2046	{
		2047	if (expect_false (ev_is_active (w)))
		2048	return;
		2049
		2050	/* since we use memcmp, we need to clear any padding data etc. */
		2051	memset (&w->prev, 0, sizeof (ev_statdata));
		2052	memset (&w->attr, 0, sizeof (ev_statdata));
		2053
		2054	ev_stat_stat (EV_A_ w);
		2055
		2056	if (w->interval < MIN_STAT_INTERVAL)
		2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2058
		2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2060	ev_set_priority (&w->timer, ev_priority (w));
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_init (EV_A);
		2064
		2065	if (fs_fd >= 0)
		2066	infy_add (EV_A_ w);
		2067	else
		2068	#endif
		2069	ev_timer_start (EV_A_ &w->timer);
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	}
		2073
		2074	void
		2075	ev_stat_stop (EV_P_ ev_stat *w)
		2076	{
		2077	clear_pending (EV_A_ (W)w);
		2078	if (expect_false (!ev_is_active (w)))
		2079	return;
		2080
		2081	#if EV_USE_INOTIFY
		2082	infy_del (EV_A_ w);
		2083	#endif
		2084	ev_timer_stop (EV_A_ &w->timer);
		2085
		2086	ev_stop (EV_A_ (W)w);
		2087	}
		2088	#endif
		2089
		2090	#if EV_IDLE_ENABLE
		2091	void
		2092	ev_idle_start (EV_P_ ev_idle *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	pri_adjust (EV_A_ (W)w);
		2098
		2099	{
		2100	int active = ++idlecnt [ABSPRI (w)];
		2101
		2102	++idleall;
		2103	ev_start (EV_A_ (W)w, active);
		2104
		2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2106	idles [ABSPRI (w)][active - 1] = w;
		2107	}
		2108	}
		2109
		2110	void
		2111	ev_idle_stop (EV_P_ ev_idle *w)
		2112	{
		2113	clear_pending (EV_A_ (W)w);
		2114	if (expect_false (!ev_is_active (w)))
		2115	return;
		2116
		2117	{
		2118	int active = ((W)w)->active;
		2119
		2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2121	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2122
		2123	ev_stop (EV_A_ (W)w);
		2124	--idleall;
		2125	}
		2126	}
		2127	#endif
		2128
		2129	void
		2130	ev_prepare_start (EV_P_ ev_prepare *w)
		2131	{
		2132	if (expect_false (ev_is_active (w)))
		2133	return;
		2134
		2135	ev_start (EV_A_ (W)w, ++preparecnt);
		2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2137	prepares [preparecnt - 1] = w;
		2138	}
		2139
		2140	void
		2141	ev_prepare_stop (EV_P_ ev_prepare *w)
		2142	{
		2143	clear_pending (EV_A_ (W)w);
		2144	if (expect_false (!ev_is_active (w)))
		2145	return;
		2146
		2147	{
		2148	int active = ((W)w)->active;
		2149	prepares [active - 1] = prepares [--preparecnt];
		2150	((W)prepares [active - 1])->active = active;
		2151	}
		2152
		2153	ev_stop (EV_A_ (W)w);
		2154	}
		2155
		2156	void
		2157	ev_check_start (EV_P_ ev_check *w)
		2158	{
		2159	if (expect_false (ev_is_active (w)))
		2160	return;
		2161
		2162	ev_start (EV_A_ (W)w, ++checkcnt);
		2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2164	checks [checkcnt - 1] = w;
		2165	}
		2166
		2167	void
		2168	ev_check_stop (EV_P_ ev_check *w)
		2169	{
		2170	clear_pending (EV_A_ (W)w);
		2171	if (expect_false (!ev_is_active (w)))
		2172	return;
		2173
		2174	{
		2175	int active = ((W)w)->active;
		2176	checks [active - 1] = checks [--checkcnt];
		2177	((W)checks [active - 1])->active = active;
		2178	}
		2179
		2180	ev_stop (EV_A_ (W)w);
		2181	}
		2182
		2183	#if EV_EMBED_ENABLE
		2184	void noinline
		2185	ev_embed_sweep (EV_P_ ev_embed *w)
		2186	{
		2187	ev_loop (w->other, EVLOOP_NONBLOCK);
		2188	}
		2189
		2190	static void
		2191	embed_io_cb (EV_P_ ev_io *io, int revents)
		2192	{
		2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2194
		2195	if (ev_cb (w))
		2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2197	else
		2198	ev_embed_sweep (loop, w);
		2199	}
		2200
		2201	static void
		2202	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2203	{
		2204	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2205
		2206	fd_reify (w->other);
		2207	}
		2208
		2209	void
		2210	ev_embed_start (EV_P_ ev_embed *w)
		2211	{
		2212	if (expect_false (ev_is_active (w)))
		2213	return;
		2214
		2215	{
		2216	struct ev_loop *loop = w->other;
		2217	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2218	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE);
		2219	}
		2220
		2221	ev_set_priority (&w->io, ev_priority (w));
		2222	ev_io_start (EV_A_ &w->io);
		2223
		2224	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2225	ev_set_priority (&w->prepare, EV_MINPRI);
		2226	ev_prepare_start (EV_A_ &w->prepare);
		2227
		2228	ev_start (EV_A_ (W)w, 1);
		2229	}
		2230
		2231	void
		2232	ev_embed_stop (EV_P_ ev_embed *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	ev_io_stop (EV_A_ &w->io);
		2239	ev_prepare_stop (EV_A_ &w->prepare);
		2240
		2241	ev_stop (EV_A_ (W)w);
		2242	}
		2243	#endif
		2244
		2245	#if EV_FORK_ENABLE
		2246	void
		2247	ev_fork_start (EV_P_ ev_fork *w)
		2248	{
		2249	if (expect_false (ev_is_active (w)))
		2250	return;
		2251
		2252	ev_start (EV_A_ (W)w, ++forkcnt);
		2253	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2254	forks [forkcnt - 1] = w;
		2255	}
		2256
		2257	void
		2258	ev_fork_stop (EV_P_ ev_fork *w)
		2259	{
		2260	clear_pending (EV_A_ (W)w);
		2261	if (expect_false (!ev_is_active (w)))
		2262	return;
		2263
		2264	{
		2265	int active = ((W)w)->active;
		2266	forks [active - 1] = forks [--forkcnt];
		2267	((W)forks [active - 1])->active = active;
		2268	}
		2269
		2270	ev_stop (EV_A_ (W)w);
		2271	}
		2272	#endif
		2273
1517	/*****************************************************************************/	2274	/*****************************************************************************/
1518		2275
1519	struct ev_once	2276	struct ev_once
1520	{	2277	{
1521	struct ev_io io;	2278	ev_io io;
1522	struct ev_timer to;	2279	ev_timer to;
1523	void (*cb)(int revents, void *arg);	2280	void (*cb)(int revents, void *arg);
1524	void *arg;	2281	void *arg;
1525	};	2282	};
1526		2283
1527	static void	2284	static void
…		…
1536		2293
1537	cb (revents, arg);	2294	cb (revents, arg);
1538	}	2295	}
1539		2296
1540	static void	2297	static void
1541	once_cb_io (EV_P_ struct ev_io *w, int revents)	2298	once_cb_io (EV_P_ ev_io *w, int revents)
1542	{	2299	{
1543	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2300	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544	}	2301	}
1545		2302
1546	static void	2303	static void
1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2304	once_cb_to (EV_P_ ev_timer *w, int revents)
1548	{	2305	{
1549	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2306	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550	}	2307	}
1551		2308
1552	void	2309	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2310	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554	{	2311	{
1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2312	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556		2313
1557	if (!once)	2314	if (expect_false (!once))
		2315	{
1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2316	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559	else	2317	return;
1560	{	2318	}
		2319
1561	once->cb = cb;	2320	once->cb = cb;
1562	once->arg = arg;	2321	once->arg = arg;
1563		2322
1564	ev_watcher_init (&once->io, once_cb_io);	2323	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	2324	if (fd >= 0)
1566	{	2325	{
1567	ev_io_set (&once->io, fd, events);	2326	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	2327	ev_io_start (EV_A_ &once->io);
1569	}	2328	}
1570		2329
1571	ev_watcher_init (&once->to, once_cb_to);	2330	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	2331	if (timeout >= 0.)
1573	{	2332	{
1574	ev_timer_set (&once->to, timeout, 0.);	2333	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	2334	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	2335	}
1578	}	2336	}
1579		2337
		2338	#if EV_MULTIPLICITY
		2339	#include "ev_wrap.h"
		2340	#endif
		2341
		2342	#ifdef __cplusplus
		2343	}
		2344	#endif
		2345

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