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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 1.150 by root, Tue Nov 27 19:41:52 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
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
64	#include <assert.h>	108	#include <assert.h>
65	#include <errno.h>	109	#include <errno.h>
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#ifndef PERL
70	# include <signal.h>	113	#include <signal.h>
71	#endif
72		114
73	#ifndef WIN32	115	#ifndef _WIN32
74	# include <unistd.h>
75	# include <sys/time.h>	116	# include <sys/time.h>
76	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
77	#endif	124	# endif
		125	#endif
		126
78	/**/	127	/**/
79		128
80	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
82	#endif	135	#endif
83		136
84	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
85	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
86	#endif	139	#endif
87		140
88	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
89	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
90	#endif	147	#endif
91		148
92	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
93	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
94	#endif	151	#endif
95		152
96	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
97	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
98	#endif	155	#endif
99		156
100	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
101	# ifdef WIN32
102	# define EV_USE_WIN32 0 /* it does not exist, use select */
103	# undef EV_USE_SELECT
104	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
105	# else	164	# else
106	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
107	# endif	166	# endif
108	#endif
109
110	#ifndef EV_USE_REALTIME
111	# define EV_USE_REALTIME 1
112	#endif	167	#endif
113		168
114	/**/	169	/**/
115		170
116	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
121	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
124	#endif	179	#endif
125		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
126	/**/	185	/**/
127		186
128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#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) */	188	#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 */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
132		190
		191	#ifdef EV_H
		192	# include EV_H
		193	#else
133	#include "ev.h"	194	# include "ev.h"
		195	#endif
134		196
135	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
136	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
137	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
138	#else	207	#else
139	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
140	# define inline static	210	# define inline_size static
		211	# define noinline
141	#endif	212	#endif
142		213
143	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
144	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
145		216
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
148		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
149	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
152		226
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		228
155	#if WIN32	229	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	230	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	231	#endif
160		232
161	/*****************************************************************************/	233	/*****************************************************************************/
162		234
163	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
164		236
		237	void
165	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
166	{	239	{
167	syserr_cb = cb;	240	syserr_cb = cb;
168	}	241	}
169		242
170	static void	243	static void noinline
171	syserr (const char *msg)	244	syserr (const char *msg)
172	{	245	{
173	if (!msg)	246	if (!msg)
174	msg = "(libev) system error";	247	msg = "(libev) system error";
175		248
…		…
180	perror (msg);	253	perror (msg);
181	abort ();	254	abort ();
182	}	255	}
183	}	256	}
184		257
185	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
186		259
		260	void
187	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
188	{	262	{
189	alloc = cb;	263	alloc = cb;
190	}	264	}
191		265
192	static void *	266	inline_speed void *
193	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
194	{	268	{
195	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
196		270
197	if (!ptr && size)	271	if (!ptr && size)
198	{	272	{
199	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
200	abort ();	274	abort ();
201	}	275	}
202		276
203	return ptr;	277	return ptr;
204	}	278	}
…		…
211	typedef struct	285	typedef struct
212	{	286	{
213	WL head;	287	WL head;
214	unsigned char events;	288	unsigned char events;
215	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
216	} ANFD;	293	} ANFD;
217		294
218	typedef struct	295	typedef struct
219	{	296	{
220	W w;	297	W w;
221	int events;	298	int events;
222	} ANPENDING;	299	} ANPENDING;
223		300
224	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
225		302
226	struct ev_loop	303	struct ev_loop
227	{	304	{
		305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	308	#include "ev_vars.h"
230	};
231	# undef VAR	309	#undef VAR
		310	};
232	# include "ev_wrap.h"	311	#include "ev_wrap.h"
		312
		313	static struct ev_loop default_loop_struct;
		314	struct ev_loop *ev_default_loop_ptr;
233		315
234	#else	316	#else
235		317
		318	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	320	#include "ev_vars.h"
238	# undef VAR	321	#undef VAR
		322
		323	static int ev_default_loop_ptr;
239		324
240	#endif	325	#endif
241		326
242	/*****************************************************************************/	327	/*****************************************************************************/
243		328
244	inline ev_tstamp	329	ev_tstamp
245	ev_time (void)	330	ev_time (void)
246	{	331	{
247	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
248	struct timespec ts;	333	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
253	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
254	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
255	#endif	340	#endif
256	}	341	}
257		342
258	inline ev_tstamp	343	ev_tstamp inline_size
259	get_clock (void)	344	get_clock (void)
260	{	345	{
261	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
262	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
263	{	348	{
…		…
268	#endif	353	#endif
269		354
270	return ev_time ();	355	return ev_time ();
271	}	356	}
272		357
		358	#if EV_MULTIPLICITY
273	ev_tstamp	359	ev_tstamp
274	ev_now (EV_P)	360	ev_now (EV_P)
275	{	361	{
276	return rt_now;	362	return ev_rt_now;
277	}	363	}
		364	#endif
278		365
279	#define array_roundsize(base,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
280		367
281	#define array_needsize(base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
283	{ \	370	{ \
284	int newcnt = cur; \	371	int newcnt = cur; \
285	do \	372	do \
286	{ \	373	{ \
287	newcnt = array_roundsize (base, newcnt << 1); \	374	newcnt = array_roundsize (type, newcnt << 1); \
288	} \	375	} \
289	while ((cnt) > newcnt); \	376	while ((cnt) > newcnt); \
290	\	377	\
291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	378	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
292	init (base + cur, newcnt - cur); \	379	init (base + cur, newcnt - cur); \
293	cur = newcnt; \	380	cur = newcnt; \
294	}	381	}
295		382
296	#define array_slim(stem) \	383	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	385	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302	}	389	}
303
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		390
309	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
310	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
311		393
312	/*****************************************************************************/	394	/*****************************************************************************/
313		395
314	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
315	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
316	{	426	{
317	while (count--)	427	while (count--)
318	{	428	{
319	base->head = 0;	429	base->head = 0;
…		…
322		432
323	++base;	433	++base;
324	}	434	}
325	}	435	}
326		436
327	static void	437	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)	438	fd_event (EV_P_ int fd, int revents)
353	{	439	{
354	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	441	ev_io *w;
356		442
357	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	443	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
358	{	444	{
359	int ev = w->events & events;	445	int ev = w->events & revents;
360		446
361	if (ev)	447	if (ev)
362	event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
363	}	449	}
364	}	450	}
365		451
366	/*****************************************************************************/	452	void
		453	ev_feed_fd_event (EV_P_ int fd, int revents)
		454	{
		455	fd_event (EV_A_ fd, revents);
		456	}
367		457
368	static void	458	void inline_size
369	fd_reify (EV_P)	459	fd_reify (EV_P)
370	{	460	{
371	int i;	461	int i;
372		462
373	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
374	{	464	{
375	int fd = fdchanges [i];	465	int fd = fdchanges [i];
376	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
377	struct ev_io *w;	467	ev_io *w;
378		468
379	int events = 0;	469	int events = 0;
380		470
381	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
382	events |= w->events;	472	events |= w->events;
383		473
		474	#if EV_SELECT_IS_WINSOCKET
		475	if (events)
		476	{
		477	unsigned long argp;
		478	anfd->handle = _get_osfhandle (fd);
		479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		480	}
		481	#endif
		482
384	anfd->reify = 0;	483	anfd->reify = 0;
385		484
386	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	486	anfd->events = events;
388	}	487	}
389		488
390	fdchangecnt = 0;	489	fdchangecnt = 0;
391	}	490	}
392		491
393	static void	492	void inline_size
394	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
395	{	494	{
396	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
397	return;	496	return;
398		497
399	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
400		499
401	++fdchangecnt;	500	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
404	}	503	}
405		504
406	static void	505	void inline_speed
407	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
408	{	507	{
409	struct ev_io *w;	508	ev_io *w;
410		509
411	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
412	{	511	{
413	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
414	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
415	}	514	}
416	}	515	}
417		516
418	static int	517	int inline_size
419	fd_valid (int fd)	518	fd_valid (int fd)
420	{	519	{
421	#ifdef WIN32	520	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
423	#else	522	#else
424	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
425	#endif	524	#endif
426	}	525	}
427		526
428	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
429	static void	528	static void noinline
430	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
431	{	530	{
432	int fd;	531	int fd;
433		532
434	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
436	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
437	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
438	}	537	}
439		538
440	/* called on ENOMEM in select/poll to kill some fds and retry */	539	/* called on ENOMEM in select/poll to kill some fds and retry */
441	static void	540	static void noinline
442	fd_enomem (EV_P)	541	fd_enomem (EV_P)
443	{	542	{
444	int fd;	543	int fd;
445		544
446	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
449	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
450	return;	549	return;
451	}	550	}
452	}	551	}
453		552
454	/* usually called after fork if method needs to re-arm all fds from scratch */	553	/* usually called after fork if backend needs to re-arm all fds from scratch */
455	static void	554	static void noinline
456	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
457	{	556	{
458	int fd;	557	int fd;
459		558
460	/* this should be highly optimised to not do anything but set a flag */	559	/* this should be highly optimised to not do anything but set a flag */
…		…
466	}	565	}
467	}	566	}
468		567
469	/*****************************************************************************/	568	/*****************************************************************************/
470		569
471	static void	570	void inline_speed
472	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
473	{	572	{
474	WT w = heap [k];	573	WT w = heap [k];
475		574
476	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
483	heap [k] = w;	582	heap [k] = w;
484	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
485		584
486	}	585	}
487		586
488	static void	587	void inline_speed
489	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
490	{	589	{
491	WT w = heap [k];	590	WT w = heap [k];
492		591
493	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
507		606
508	heap [k] = w;	607	heap [k] = w;
509	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
510	}	609	}
511		610
		611	void inline_size
		612	adjustheap (WT *heap, int N, int k)
		613	{
		614	upheap (heap, k);
		615	downheap (heap, N, k);
		616	}
		617
512	/*****************************************************************************/	618	/*****************************************************************************/
513		619
514	typedef struct	620	typedef struct
515	{	621	{
516	WL head;	622	WL head;
…		…
520	static ANSIG *signals;	626	static ANSIG *signals;
521	static int signalmax;	627	static int signalmax;
522		628
523	static int sigpipe [2];	629	static int sigpipe [2];
524	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
525	static struct ev_io sigev;	631	static ev_io sigev;
526		632
527	static void	633	void inline_size
528	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
529	{	635	{
530	while (count--)	636	while (count--)
531	{	637	{
532	base->head = 0;	638	base->head = 0;
…		…
537	}	643	}
538		644
539	static void	645	static void
540	sighandler (int signum)	646	sighandler (int signum)
541	{	647	{
542	#if WIN32	648	#if _WIN32
543	signal (signum, sighandler);	649	signal (signum, sighandler);
544	#endif	650	#endif
545		651
546	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
547		653
…		…
552	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	659	errno = old_errno;
554	}	660	}
555	}	661	}
556		662
		663	void noinline
		664	ev_feed_signal_event (EV_P_ int signum)
		665	{
		666	WL w;
		667
		668	#if EV_MULTIPLICITY
		669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		670	#endif
		671
		672	--signum;
		673
		674	if (signum < 0 || signum >= signalmax)
		675	return;
		676
		677	signals [signum].gotsig = 0;
		678
		679	for (w = signals [signum].head; w; w = w->next)
		680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		681	}
		682
557	static void	683	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
559	{	685	{
560	WL w;
561	int signum;	686	int signum;
562		687
563	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	689	gotsig = 0;
565		690
566	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
568	{	693	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	}	694	}
575		695
576	static void	696	void inline_size
		697	fd_intern (int fd)
		698	{
		699	#ifdef _WIN32
		700	int arg = 1;
		701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		702	#else
		703	fcntl (fd, F_SETFD, FD_CLOEXEC);
		704	fcntl (fd, F_SETFL, O_NONBLOCK);
		705	#endif
		706	}
		707
		708	static void noinline
577	siginit (EV_P)	709	siginit (EV_P)
578	{	710	{
579	#ifndef WIN32	711	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	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		713
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	717	}
592		718
593	/*****************************************************************************/	719	/*****************************************************************************/
594		720
595	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
596		722
597	#ifndef WIN32	723	#ifndef _WIN32
598		724
599	static struct ev_signal childev;	725	static ev_signal childev;
600		726
601	#ifndef WCONTINUED	727	void inline_speed
602	# define WCONTINUED 0
603	#endif
604
605	static void
606	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
607	{	729	{
608	struct ev_child *w;	730	ev_child *w;
609		731
610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
611	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
612	{	734	{
613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614	w->rpid = pid;	736	w->rpid = pid;
615	w->rstatus = status;	737	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
617	}	739	}
618	}	740	}
619		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
620	static void	746	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
622	{	748	{
623	int pid, status;	749	int pid, status;
624		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
627	/* make sure we are called again until all childs have been reaped */	758	/* make sure we are called again until all childs have been reaped */
		759	/* we need to do it this way so that the callback gets called before we continue */
628	event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		761
630	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	764	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
632	}
633	}	765	}
634		766
635	#endif	767	#endif
636		768
637	/*****************************************************************************/	769	/*****************************************************************************/
638		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
639	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
641	#endif	776	#endif
642	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
660	{	795	{
661	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
662	}	797	}
663		798
664	/* return true if we are running with elevated privileges and should ignore env variables */	799	/* return true if we are running with elevated privileges and should ignore env variables */
665	static int	800	int inline_size
666	enable_secure (void)	801	enable_secure (void)
667	{	802	{
668	#ifdef WIN32	803	#ifdef _WIN32
669	return 0;	804	return 0;
670	#else	805	#else
671	return getuid () != geteuid ()	806	return getuid () != geteuid ()
672	|| getgid () != getegid ();	807	|| getgid () != getegid ();
673	#endif	808	#endif
674	}	809	}
675		810
676	int	811	unsigned int
677	ev_method (EV_P)	812	ev_supported_backends (void)
678	{	813	{
679	return method;	814	unsigned int flags = 0;
		815
		816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		817	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		818	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		819	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		820	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		821
		822	return flags;
		823	}
		824
		825	unsigned int
		826	ev_recommended_backends (void)
		827	{
		828	unsigned int flags = ev_supported_backends ();
		829
		830	#ifndef __NetBSD__
		831	/* kqueue is borked on everything but netbsd apparently */
		832	/* it usually doesn't work correctly on anything but sockets and pipes */
		833	flags &= ~EVBACKEND_KQUEUE;
		834	#endif
		835	#ifdef __APPLE__
		836	// flags &= ~EVBACKEND_KQUEUE; for documentation
		837	flags &= ~EVBACKEND_POLL;
		838	#endif
		839
		840	return flags;
		841	}
		842
		843	unsigned int
		844	ev_embeddable_backends (void)
		845	{
		846	return EVBACKEND_EPOLL
		847	| EVBACKEND_KQUEUE
		848	| EVBACKEND_PORT;
		849	}
		850
		851	unsigned int
		852	ev_backend (EV_P)
		853	{
		854	return backend;
680	}	855	}
681		856
682	static void	857	static void
683	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
684	{	859	{
685	if (!method)	860	if (!backend)
686	{	861	{
687	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
688	{	863	{
689	struct timespec ts;	864	struct timespec ts;
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	866	have_monotonic = 1;
692	}	867	}
693	#endif	868	#endif
694		869
695	rt_now = ev_time ();	870	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	871	mn_now = get_clock ();
697	now_floor = mn_now;	872	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
699		874
700	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
701	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else
704	methods = EVMETHOD_ANY;
705		879
706	method = 0;	880	if (!(flags & 0x0000ffffUL))
707	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
709	#endif	886	#endif
710	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712	#endif	889	#endif
713	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715	#endif	892	#endif
716	#if EV_USE_POLL	893	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718	#endif	895	#endif
719	#if EV_USE_SELECT	896	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721	#endif	898	#endif
722		899
723	ev_watcher_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
725	}	902	}
726	}	903	}
727		904
728	void	905	static void
729	loop_destroy (EV_P)	906	loop_destroy (EV_P)
730	{	907	{
731	int i;	908	int i;
732		909
733	#if EV_USE_WIN32	910	#if EV_USE_PORT
734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
735	#endif	912	#endif
736	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738	#endif	915	#endif
739	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741	#endif	918	#endif
742	#if EV_USE_POLL	919	#if EV_USE_POLL
743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744	#endif	921	#endif
745	#if EV_USE_SELECT	922	#if EV_USE_SELECT
746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747	#endif	924	#endif
748		925
749	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
750	array_free (pending, [i]);	927	array_free (pending, [i]);
751		928
752	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
754	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
755	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
756	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
757	array_free_microshit (prepare);	934	#endif
758	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
759		938
760	method = 0;	939	backend = 0;
761	}	940	}
762		941
763	static void	942	static void
764	loop_fork (EV_P)	943	loop_fork (EV_P)
765	{	944	{
		945	#if EV_USE_PORT
		946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		947	#endif
		948	#if EV_USE_KQUEUE
		949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		950	#endif
766	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768	#endif
769	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
771	#endif	953	#endif
772		954
773	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
774	{	956	{
775	/* default loop */	957	/* default loop */
…		…
788	postfork = 0;	970	postfork = 0;
789	}	971	}
790		972
791	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
792	struct ev_loop *	974	struct ev_loop *
793	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
794	{	976	{
795	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	977	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796		978
797	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
798		980
799	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
800		982
801	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
802	return loop;	984	return loop;
803		985
804	return 0;	986	return 0;
805	}	987	}
806		988
…		…
818	}	1000	}
819		1001
820	#endif	1002	#endif
821		1003
822	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
827	#else	1007	#else
828	static int default_loop;
829
830	int	1008	int
		1009	ev_default_loop (unsigned int flags)
831	#endif	1010	#endif
832	ev_default_loop (int methods)
833	{	1011	{
834	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
836	return 0;	1014	return 0;
837		1015
838	if (!default_loop)	1016	if (!ev_default_loop_ptr)
839	{	1017	{
840	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	1020	#else
843	default_loop = 1;	1021	ev_default_loop_ptr = 1;
844	#endif	1022	#endif
845		1023
846	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
847		1025
848	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
849	{	1027	{
850	siginit (EV_A);	1028	siginit (EV_A);
851		1029
852	#ifndef WIN32	1030	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	1035	#endif
858	}	1036	}
859	else	1037	else
860	default_loop = 0;	1038	ev_default_loop_ptr = 0;
861	}	1039	}
862		1040
863	return default_loop;	1041	return ev_default_loop_ptr;
864	}	1042	}
865		1043
866	void	1044	void
867	ev_default_destroy (void)	1045	ev_default_destroy (void)
868	{	1046	{
869	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	1049	#endif
872		1050
873	#ifndef WIN32	1051	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
876	#endif	1054	#endif
877		1055
878	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
886		1064
887	void	1065	void
888	ev_default_fork (void)	1066	ev_default_fork (void)
889	{	1067	{
890	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	1070	#endif
893		1071
894	if (method)	1072	if (backend)
895	postfork = 1;	1073	postfork = 1;
896	}	1074	}
897		1075
898	/*****************************************************************************/	1076	/*****************************************************************************/
899		1077
900	static void	1078	int inline_size
		1079	any_pending (EV_P)
		1080	{
		1081	int pri;
		1082
		1083	for (pri = NUMPRI; pri--; )
		1084	if (pendingcnt [pri])
		1085	return 1;
		1086
		1087	return 0;
		1088	}
		1089
		1090	void inline_speed
901	call_pending (EV_P)	1091	call_pending (EV_P)
902	{	1092	{
903	int pri;	1093	int pri;
904		1094
905	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
907	{	1097	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1099
910	if (p->w)	1100	if (expect_true (p->w))
911	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
912	p->w->pending = 0;	1104	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
914	}	1106	}
915	}	1107	}
916	}	1108	}
917		1109
918	static void	1110	void inline_size
919	timers_reify (EV_P)	1111	timers_reify (EV_P)
920	{	1112	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1114	{
923	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
924		1116
925	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
926		1118
927	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
928	if (w->repeat)	1120	if (w->repeat)
929	{	1121	{
930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1123
931	((WT)w)->at = mn_now + w->repeat;	1124	((WT)w)->at += w->repeat;
		1125	if (((WT)w)->at < mn_now)
		1126	((WT)w)->at = mn_now;
		1127
932	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
933	}	1129	}
934	else	1130	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1132
937	event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1134	}
939	}	1135	}
940		1136
941	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
942	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
943	{	1140	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1142	{
946	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
947		1144
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
949		1146
950	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
951	if (w->interval)	1148	if (w->reschedule_cb)
952	{	1149	{
		1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1152	downheap ((WT *)periodics, periodiccnt, 0);
		1153	}
		1154	else if (w->interval)
		1155	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1157	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);	1158	downheap ((WT *)periodics, periodiccnt, 0);
956	}	1159	}
957	else	1160	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1162
960	event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1164	}
962	}	1165	}
963		1166
964	static void	1167	static void noinline
965	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
966	{	1169	{
967	int i;	1170	int i;
968		1171
969	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
971	{	1174	{
972	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
973		1176
		1177	if (w->reschedule_cb)
		1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1179	else if (w->interval)
975	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
977
978	if (fabs (diff) >= 1e-4)
979	{
980	ev_periodic_stop (EV_A_ w);
981	ev_periodic_start (EV_A_ w);
982
983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
984	}
985	}
986	}	1181	}
987	}
988		1182
989	inline int	1183	/* now rebuild the heap */
		1184	for (i = periodiccnt >> 1; i--; )
		1185	downheap ((WT *)periodics, periodiccnt, i);
		1186	}
		1187	#endif
		1188
		1189	int inline_size
990	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
991	{	1191	{
992	mn_now = get_clock ();	1192	mn_now = get_clock ();
993		1193
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{	1195	{
996	rt_now = rtmn_diff + mn_now;	1196	ev_rt_now = rtmn_diff + mn_now;
997	return 0;	1197	return 0;
998	}	1198	}
999	else	1199	else
1000	{	1200	{
1001	now_floor = mn_now;	1201	now_floor = mn_now;
1002	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1003	return 1;	1203	return 1;
1004	}	1204	}
1005	}	1205	}
1006		1206
1007	static void	1207	void inline_size
1008	time_update (EV_P)	1208	time_update (EV_P)
1009	{	1209	{
1010	int i;	1210	int i;
1011		1211
1012	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1014	{	1214	{
1015	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1016	{	1216	{
1017	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1018		1218
1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1219	/* loop a few times, before making important decisions.
		1220	* on the choice of "4": one iteration isn't enough,
		1221	* in case we get preempted during the calls to
		1222	* ev_time and get_clock. a second call is almost guarenteed
		1223	* to succeed in that case, though. and looping a few more times
		1224	* doesn't hurt either as we only do this on time-jumps or
		1225	* in the unlikely event of getting preempted here.
		1226	*/
		1227	for (i = 4; --i; )
1020	{	1228	{
1021	rtmn_diff = rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1022		1230
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1232	return; /* all is well */
1025		1233
1026	rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1235	mn_now = get_clock ();
1028	now_floor = mn_now;	1236	now_floor = mn_now;
1029	}	1237	}
1030		1238
		1239	# if EV_PERIODIC_ENABLE
1031	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034	}	1244	}
1035	}	1245	}
1036	else	1246	else
1037	#endif	1247	#endif
1038	{	1248	{
1039	rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1040		1250
1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1043	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1044		1256
1045	/* adjust timers. this is easy, as the offset is the same for all */	1257	/* adjust timers. this is easy, as the offset is the same for all */
1046	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1048	}	1260	}
1049		1261
1050	mn_now = rt_now;	1262	mn_now = ev_rt_now;
1051	}	1263	}
1052	}	1264	}
1053		1265
1054	void	1266	void
1055	ev_ref (EV_P)	1267	ev_ref (EV_P)
…		…
1066	static int loop_done;	1278	static int loop_done;
1067		1279
1068	void	1280	void
1069	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1070	{	1282	{
1071	double block;
1072	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1073		1286
1074	do	1287	while (activecnt)
1075	{	1288	{
		1289	/* we might have forked, so reify kernel state if necessary */
		1290	#if EV_FORK_ENABLE
		1291	if (expect_false (postfork))
		1292	if (forkcnt)
		1293	{
		1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1295	call_pending (EV_A);
		1296	}
		1297	#endif
		1298
1076	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1077	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1078	{	1301	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1086		1309
1087	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1311	fd_reify (EV_A);
1089		1312
1090	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1091		1316
1092	/* we only need this for !monotonic clockor timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1093	always have timers, we just calculate it always */	1318	block = 0.; /* do not block at all */
		1319	else
		1320	{
		1321	/* update time to cancel out callback processing overhead */
1094	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1097	else	1325	else
1098	#endif	1326	#endif
1099	{	1327	{
1100	rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1101	mn_now = rt_now;	1329	mn_now = ev_rt_now;
1102	}	1330	}
1103		1331
1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
1105	block = 0.;
1106	else
1107	{
1108	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1109		1333
1110	if (timercnt)	1334	if (timercnt)
1111	{	1335	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113	if (block > to) block = to;	1337	if (block > to) block = to;
1114	}	1338	}
1115		1339
		1340	#if EV_PERIODIC_ENABLE
1116	if (periodiccnt)	1341	if (periodiccnt)
1117	{	1342	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119	if (block > to) block = to;	1344	if (block > to) block = to;
1120	}	1345	}
		1346	#endif
1121		1347
1122	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1123	}	1349	}
1124		1350
1125	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1126		1353
1127	/* update rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1355	time_update (EV_A);
1129		1356
1130	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1132	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1133		1362
1134	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1135	if (!pendingcnt)	1364	if (idlecnt && !any_pending (EV_A))
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1137		1366
1138	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1368	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1370
1142	call_pending (EV_A);	1371	call_pending (EV_A);
1143	}
1144	while (activecnt && !loop_done);
1145		1372
1146	if (loop_done != 2)	1373	if (expect_false (loop_done))
1147	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1148	}	1379	}
1149		1380
1150	void	1381	void
1151	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1152	{	1383	{
1153	loop_done = how;	1384	loop_done = how;
1154	}	1385	}
1155		1386
1156	/*****************************************************************************/	1387	/*****************************************************************************/
1157		1388
1158	inline void	1389	void inline_size
1159	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1160	{	1391	{
1161	elem->next = *head;	1392	elem->next = *head;
1162	*head = elem;	1393	*head = elem;
1163	}	1394	}
1164		1395
1165	inline void	1396	void inline_size
1166	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1167	{	1398	{
1168	while (*head)	1399	while (*head)
1169	{	1400	{
1170	if (*head == elem)	1401	if (*head == elem)
…		…
1175		1406
1176	head = &(*head)->next;	1407	head = &(*head)->next;
1177	}	1408	}
1178	}	1409	}
1179		1410
1180	inline void	1411	void inline_speed
1181	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1182	{	1413	{
1183	if (w->pending)	1414	if (w->pending)
1184	{	1415	{
1185	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186	w->pending = 0;	1417	w->pending = 0;
1187	}	1418	}
1188	}	1419	}
1189		1420
1190	inline void	1421	void inline_speed
1191	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1192	{	1423	{
1193	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1194	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195		1426
1196	w->active = active;	1427	w->active = active;
1197	ev_ref (EV_A);	1428	ev_ref (EV_A);
1198	}	1429	}
1199		1430
1200	inline void	1431	void inline_size
1201	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1202	{	1433	{
1203	ev_unref (EV_A);	1434	ev_unref (EV_A);
1204	w->active = 0;	1435	w->active = 0;
1205	}	1436	}
1206		1437
1207	/*****************************************************************************/	1438	/*****************************************************************************/
1208		1439
1209	void	1440	void
1210	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1211	{	1442	{
1212	int fd = w->fd;	1443	int fd = w->fd;
1213		1444
1214	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1215	return;	1446	return;
1216		1447
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1449
1219	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222		1453
1223	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1224	}	1455	}
1225		1456
1226	void	1457	void
1227	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1228	{	1459	{
1229	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1231	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232		1465
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1235		1468
1236	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1237	}	1470	}
1238		1471
1239	void	1472	void
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1241	{	1474	{
1242	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1243	return;	1476	return;
1244		1477
1245	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1246		1479
1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248		1481
1249	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1252	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1253		1486
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255	}	1488	}
1256		1489
1257	void	1490	void
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1259	{	1492	{
1260	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1262	return;	1495	return;
1263		1496
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265		1498
1266	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1267	{	1500	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1270	}	1503	}
1271		1504
1272	((WT)w)->at = w->repeat;	1505	((WT)w)->at -= mn_now;
1273		1506
1274	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1275	}	1508	}
1276		1509
1277	void	1510	void
1278	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1279	{	1512	{
1280	if (ev_is_active (w))	1513	if (ev_is_active (w))
1281	{	1514	{
1282	if (w->repeat)	1515	if (w->repeat)
1283	{	1516	{
1284	((WT)w)->at = mn_now + w->repeat;	1517	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286	}	1519	}
1287	else	1520	else
1288	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1289	}	1522	}
1290	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1292	}	1528	}
1293		1529
		1530	#if EV_PERIODIC_ENABLE
1294	void	1531	void
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1296	{	1533	{
1297	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1298	return;	1535	return;
1299		1536
		1537	if (w->reschedule_cb)
		1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1539	else if (w->interval)
		1540	{
1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1541	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 */	1542	/* 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;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1544	}
1305		1545
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1310		1550
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312	}	1552	}
1313		1553
1314	void	1554	void
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1316	{	1556	{
1317	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1319	return;	1559	return;
1320		1560
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322		1562
1323	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1324	{	1564	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1327	}	1567	}
1328		1568
1329	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1330	}	1570	}
1331		1571
1332	void	1572	void
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1334	{	1574	{
1335	if (ev_is_active (w))	1575	/* 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);	1576	ev_periodic_stop (EV_A_ w);
		1577	ev_periodic_start (EV_A_ w);
1352	}	1578	}
1353		1579	#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		1580
1398	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1399	# define SA_RESTART 0	1582	# define SA_RESTART 0
1400	#endif	1583	#endif
1401		1584
1402	void	1585	void
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1404	{	1587	{
1405	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407	#endif	1590	#endif
1408	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1409	return;	1592	return;
1410		1593
1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412		1595
1413	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416		1599
1417	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1418	{	1601	{
1419	#if WIN32	1602	#if _WIN32
1420	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1421	#else	1604	#else
1422	struct sigaction sa;	1605	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1427	#endif	1610	#endif
1428	}	1611	}
1429	}	1612	}
1430		1613
1431	void	1614	void
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1433	{	1616	{
1434	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1436	return;	1619	return;
1437		1620
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1440		1623
1441	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1442	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1443	}	1626	}
1444		1627
1445	void	1628	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1447	{	1630	{
1448	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1449	assert (("child watchers are only supported in the default loop", loop == default_loop));	1632	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450	#endif	1633	#endif
1451	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1452	return;	1635	return;
1453		1636
1454	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456	}	1639	}
1457		1640
1458	void	1641	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1460	{	1643	{
1461	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1463	return;	1646	return;
1464		1647
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1467	}	1650	}
1468		1651
		1652	#if EV_STAT_ENABLE
		1653
		1654	# ifdef _WIN32
		1655	# undef lstat
		1656	# define lstat(a,b) _stati64 (a,b)
		1657	# endif
		1658
		1659	#define DEF_STAT_INTERVAL 5.0074891
		1660	#define MIN_STAT_INTERVAL 0.1074891
		1661
		1662	void
		1663	ev_stat_stat (EV_P_ ev_stat *w)
		1664	{
		1665	if (lstat (w->path, &w->attr) < 0)
		1666	w->attr.st_nlink = 0;
		1667	else if (!w->attr.st_nlink)
		1668	w->attr.st_nlink = 1;
		1669	}
		1670
		1671	static void
		1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1673	{
		1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1675
		1676	/* we copy this here each the time so that */
		1677	/* prev has the old value when the callback gets invoked */
		1678	w->prev = w->attr;
		1679	ev_stat_stat (EV_A_ w);
		1680
		1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1682	ev_feed_event (EV_A_ w, EV_STAT);
		1683	}
		1684
		1685	void
		1686	ev_stat_start (EV_P_ ev_stat *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	/* since we use memcmp, we need to clear any padding data etc. */
		1692	memset (&w->prev, 0, sizeof (ev_statdata));
		1693	memset (&w->attr, 0, sizeof (ev_statdata));
		1694
		1695	ev_stat_stat (EV_A_ w);
		1696
		1697	if (w->interval < MIN_STAT_INTERVAL)
		1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1699
		1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1701	ev_set_priority (&w->timer, ev_priority (w));
		1702	ev_timer_start (EV_A_ &w->timer);
		1703
		1704	ev_start (EV_A_ (W)w, 1);
		1705	}
		1706
		1707	void
		1708	ev_stat_stop (EV_P_ ev_stat *w)
		1709	{
		1710	ev_clear_pending (EV_A_ (W)w);
		1711	if (expect_false (!ev_is_active (w)))
		1712	return;
		1713
		1714	ev_timer_stop (EV_A_ &w->timer);
		1715
		1716	ev_stop (EV_A_ (W)w);
		1717	}
		1718	#endif
		1719
		1720	void
		1721	ev_idle_start (EV_P_ ev_idle *w)
		1722	{
		1723	if (expect_false (ev_is_active (w)))
		1724	return;
		1725
		1726	ev_start (EV_A_ (W)w, ++idlecnt);
		1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1728	idles [idlecnt - 1] = w;
		1729	}
		1730
		1731	void
		1732	ev_idle_stop (EV_P_ ev_idle *w)
		1733	{
		1734	ev_clear_pending (EV_A_ (W)w);
		1735	if (expect_false (!ev_is_active (w)))
		1736	return;
		1737
		1738	{
		1739	int active = ((W)w)->active;
		1740	idles [active - 1] = idles [--idlecnt];
		1741	((W)idles [active - 1])->active = active;
		1742	}
		1743
		1744	ev_stop (EV_A_ (W)w);
		1745	}
		1746
		1747	void
		1748	ev_prepare_start (EV_P_ ev_prepare *w)
		1749	{
		1750	if (expect_false (ev_is_active (w)))
		1751	return;
		1752
		1753	ev_start (EV_A_ (W)w, ++preparecnt);
		1754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1755	prepares [preparecnt - 1] = w;
		1756	}
		1757
		1758	void
		1759	ev_prepare_stop (EV_P_ ev_prepare *w)
		1760	{
		1761	ev_clear_pending (EV_A_ (W)w);
		1762	if (expect_false (!ev_is_active (w)))
		1763	return;
		1764
		1765	{
		1766	int active = ((W)w)->active;
		1767	prepares [active - 1] = prepares [--preparecnt];
		1768	((W)prepares [active - 1])->active = active;
		1769	}
		1770
		1771	ev_stop (EV_A_ (W)w);
		1772	}
		1773
		1774	void
		1775	ev_check_start (EV_P_ ev_check *w)
		1776	{
		1777	if (expect_false (ev_is_active (w)))
		1778	return;
		1779
		1780	ev_start (EV_A_ (W)w, ++checkcnt);
		1781	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1782	checks [checkcnt - 1] = w;
		1783	}
		1784
		1785	void
		1786	ev_check_stop (EV_P_ ev_check *w)
		1787	{
		1788	ev_clear_pending (EV_A_ (W)w);
		1789	if (expect_false (!ev_is_active (w)))
		1790	return;
		1791
		1792	{
		1793	int active = ((W)w)->active;
		1794	checks [active - 1] = checks [--checkcnt];
		1795	((W)checks [active - 1])->active = active;
		1796	}
		1797
		1798	ev_stop (EV_A_ (W)w);
		1799	}
		1800
		1801	#if EV_EMBED_ENABLE
		1802	void noinline
		1803	ev_embed_sweep (EV_P_ ev_embed *w)
		1804	{
		1805	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1806	}
		1807
		1808	static void
		1809	embed_cb (EV_P_ ev_io *io, int revents)
		1810	{
		1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1812
		1813	if (ev_cb (w))
		1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1815	else
		1816	ev_embed_sweep (loop, w);
		1817	}
		1818
		1819	void
		1820	ev_embed_start (EV_P_ ev_embed *w)
		1821	{
		1822	if (expect_false (ev_is_active (w)))
		1823	return;
		1824
		1825	{
		1826	struct ev_loop *loop = w->loop;
		1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1829	}
		1830
		1831	ev_set_priority (&w->io, ev_priority (w));
		1832	ev_io_start (EV_A_ &w->io);
		1833
		1834	ev_start (EV_A_ (W)w, 1);
		1835	}
		1836
		1837	void
		1838	ev_embed_stop (EV_P_ ev_embed *w)
		1839	{
		1840	ev_clear_pending (EV_A_ (W)w);
		1841	if (expect_false (!ev_is_active (w)))
		1842	return;
		1843
		1844	ev_io_stop (EV_A_ &w->io);
		1845
		1846	ev_stop (EV_A_ (W)w);
		1847	}
		1848	#endif
		1849
		1850	#if EV_FORK_ENABLE
		1851	void
		1852	ev_fork_start (EV_P_ ev_fork *w)
		1853	{
		1854	if (expect_false (ev_is_active (w)))
		1855	return;
		1856
		1857	ev_start (EV_A_ (W)w, ++forkcnt);
		1858	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1859	forks [forkcnt - 1] = w;
		1860	}
		1861
		1862	void
		1863	ev_fork_stop (EV_P_ ev_fork *w)
		1864	{
		1865	ev_clear_pending (EV_A_ (W)w);
		1866	if (expect_false (!ev_is_active (w)))
		1867	return;
		1868
		1869	{
		1870	int active = ((W)w)->active;
		1871	forks [active - 1] = forks [--forkcnt];
		1872	((W)forks [active - 1])->active = active;
		1873	}
		1874
		1875	ev_stop (EV_A_ (W)w);
		1876	}
		1877	#endif
		1878
1469	/*****************************************************************************/	1879	/*****************************************************************************/
1470		1880
1471	struct ev_once	1881	struct ev_once
1472	{	1882	{
1473	struct ev_io io;	1883	ev_io io;
1474	struct ev_timer to;	1884	ev_timer to;
1475	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1476	void *arg;	1886	void *arg;
1477	};	1887	};
1478		1888
1479	static void	1889	static void
…		…
1488		1898
1489	cb (revents, arg);	1899	cb (revents, arg);
1490	}	1900	}
1491		1901
1492	static void	1902	static void
1493	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1494	{	1904	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1905	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496	}	1906	}
1497		1907
1498	static void	1908	static void
1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1500	{	1910	{
1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1911	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502	}	1912	}
1503		1913
1504	void	1914	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1915	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506	{	1916	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508		1918
1509	if (!once)	1919	if (expect_false (!once))
		1920	{
1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511	else	1922	return;
1512	{	1923	}
		1924
1513	once->cb = cb;	1925	once->cb = cb;
1514	once->arg = arg;	1926	once->arg = arg;
1515		1927
1516	ev_watcher_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	1929	if (fd >= 0)
1518	{	1930	{
1519	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1521	}	1933	}
1522		1934
1523	ev_watcher_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	1936	if (timeout >= 0.)
1525	{	1937	{
1526	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	1940	}
1530	}	1941	}
1531		1942
		1943	#ifdef __cplusplus
		1944	}
		1945	#endif
		1946

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