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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 1.143 by root, Tue Nov 27 07:27:10 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
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
105	# else
106	# define EV_USE_WIN32 0
107	# endif
108	#endif
109
110	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
111	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
112	#endif	159	#endif
113		160
114	/**/	161	/**/
115		162
116	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
121	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
124	#endif	171	#endif
125		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
126	/**/	177	/**/
127		178
128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#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) */	180	#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 */	181	#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 */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
132		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
133	#include "ev.h"	187	# include "ev.h"
		188	#endif
134		189
135	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
136	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
137	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
138	#else	200	#else
139	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
140	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
141	#endif	205	#endif
142		206
143	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
144	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
145		209
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
148		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
149	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
152		219
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		221
155	#if WIN32	222	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	224	#endif
160		225
161	/*****************************************************************************/	226	/*****************************************************************************/
162		227
163	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
164		229
		230	void
165	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
166	{	232	{
167	syserr_cb = cb;	233	syserr_cb = cb;
168	}	234	}
169		235
170	static void	236	static void noinline
171	syserr (const char *msg)	237	syserr (const char *msg)
172	{	238	{
173	if (!msg)	239	if (!msg)
174	msg = "(libev) system error";	240	msg = "(libev) system error";
175		241
…		…
182	}	248	}
183	}	249	}
184		250
185	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
186		252
		253	void
187	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
188	{	255	{
189	alloc = cb;	256	alloc = cb;
190	}	257	}
191		258
192	static void *	259	static void *
…		…
211	typedef struct	278	typedef struct
212	{	279	{
213	WL head;	280	WL head;
214	unsigned char events;	281	unsigned char events;
215	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
216	} ANFD;	286	} ANFD;
217		287
218	typedef struct	288	typedef struct
219	{	289	{
220	W w;	290	W w;
221	int events;	291	int events;
222	} ANPENDING;	292	} ANPENDING;
223		293
224	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
225		295
226	struct ev_loop	296	struct ev_loop
227	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	301	#include "ev_vars.h"
230	};
231	# undef VAR	302	#undef VAR
		303	};
232	# include "ev_wrap.h"	304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
233		308
234	#else	309	#else
235		310
		311	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	313	#include "ev_vars.h"
238	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
239		317
240	#endif	318	#endif
241		319
242	/*****************************************************************************/	320	/*****************************************************************************/
243		321
244	inline ev_tstamp	322	ev_tstamp
245	ev_time (void)	323	ev_time (void)
246	{	324	{
247	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
248	struct timespec ts;	326	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
253	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
254	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
255	#endif	333	#endif
256	}	334	}
257		335
258	inline ev_tstamp	336	ev_tstamp inline_size
259	get_clock (void)	337	get_clock (void)
260	{	338	{
261	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
262	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
263	{	341	{
…		…
268	#endif	346	#endif
269		347
270	return ev_time ();	348	return ev_time ();
271	}	349	}
272		350
		351	#if EV_MULTIPLICITY
273	ev_tstamp	352	ev_tstamp
274	ev_now (EV_P)	353	ev_now (EV_P)
275	{	354	{
276	return rt_now;	355	return ev_rt_now;
277	}	356	}
		357	#endif
278		358
279	#define array_roundsize(base,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
280		360
281	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
283	{ \	363	{ \
284	int newcnt = cur; \	364	int newcnt = cur; \
285	do \	365	do \
286	{ \	366	{ \
287	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
288	} \	368	} \
289	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
290	\	370	\
291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
292	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
293	cur = newcnt; \	373	cur = newcnt; \
294	}	374	}
295		375
296	#define array_slim(stem) \	376	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	378	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302	}	382	}
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		383
309	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
310	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
311		386
312	/*****************************************************************************/	387	/*****************************************************************************/
313		388
314	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
315	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
316	{	419	{
317	while (count--)	420	while (count--)
318	{	421	{
319	base->head = 0;	422	base->head = 0;
…		…
322		425
323	++base;	426	++base;
324	}	427	}
325	}	428	}
326		429
327	static void	430	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)	431	fd_event (EV_P_ int fd, int revents)
353	{	432	{
354	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	434	ev_io *w;
356		435
357	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
358	{	437	{
359	int ev = w->events & events;	438	int ev = w->events & revents;
360		439
361	if (ev)	440	if (ev)
362	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
363	}	442	}
364	}	443	}
365		444
366	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
367		450
368	static void	451	void inline_size
369	fd_reify (EV_P)	452	fd_reify (EV_P)
370	{	453	{
371	int i;	454	int i;
372		455
373	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
374	{	457	{
375	int fd = fdchanges [i];	458	int fd = fdchanges [i];
376	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
377	struct ev_io *w;	460	ev_io *w;
378		461
379	int events = 0;	462	int events = 0;
380		463
381	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
382	events |= w->events;	465	events |= w->events;
383		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
384	anfd->reify = 0;	476	anfd->reify = 0;
385		477
386	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	479	anfd->events = events;
388	}	480	}
389		481
390	fdchangecnt = 0;	482	fdchangecnt = 0;
391	}	483	}
392		484
393	static void	485	void inline_size
394	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
395	{	487	{
396	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
397	return;	489	return;
398		490
399	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
400		492
401	++fdchangecnt;	493	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
404	}	496	}
405		497
406	static void	498	void inline_speed
407	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
408	{	500	{
409	struct ev_io *w;	501	ev_io *w;
410		502
411	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
412	{	504	{
413	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
414	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
415	}	507	}
416	}	508	}
417		509
418	static int	510	int inline_size
419	fd_valid (int fd)	511	fd_valid (int fd)
420	{	512	{
421	#ifdef WIN32	513	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
423	#else	515	#else
424	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
425	#endif	517	#endif
426	}	518	}
427		519
428	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
429	static void	521	static void noinline
430	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
431	{	523	{
432	int fd;	524	int fd;
433		525
434	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
436	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
437	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
438	}	530	}
439		531
440	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
441	static void	533	static void noinline
442	fd_enomem (EV_P)	534	fd_enomem (EV_P)
443	{	535	{
444	int fd;	536	int fd;
445		537
446	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
449	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
450	return;	542	return;
451	}	543	}
452	}	544	}
453		545
454	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
455	static void	547	static void noinline
456	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
457	{	549	{
458	int fd;	550	int fd;
459		551
460	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
466	}	558	}
467	}	559	}
468		560
469	/*****************************************************************************/	561	/*****************************************************************************/
470		562
471	static void	563	void inline_speed
472	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
473	{	565	{
474	WT w = heap [k];	566	WT w = heap [k];
475		567
476	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
483	heap [k] = w;	575	heap [k] = w;
484	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
485		577
486	}	578	}
487		579
488	static void	580	void inline_speed
489	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
490	{	582	{
491	WT w = heap [k];	583	WT w = heap [k];
492		584
493	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
507		599
508	heap [k] = w;	600	heap [k] = w;
509	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
510	}	602	}
511		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
		609	}
		610
512	/*****************************************************************************/	611	/*****************************************************************************/
513		612
514	typedef struct	613	typedef struct
515	{	614	{
516	WL head;	615	WL head;
…		…
520	static ANSIG *signals;	619	static ANSIG *signals;
521	static int signalmax;	620	static int signalmax;
522		621
523	static int sigpipe [2];	622	static int sigpipe [2];
524	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
525	static struct ev_io sigev;	624	static ev_io sigev;
526		625
527	static void	626	void inline_size
528	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
529	{	628	{
530	while (count--)	629	while (count--)
531	{	630	{
532	base->head = 0;	631	base->head = 0;
…		…
537	}	636	}
538		637
539	static void	638	static void
540	sighandler (int signum)	639	sighandler (int signum)
541	{	640	{
542	#if WIN32	641	#if _WIN32
543	signal (signum, sighandler);	642	signal (signum, sighandler);
544	#endif	643	#endif
545		644
546	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
547		646
…		…
552	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	652	errno = old_errno;
554	}	653	}
555	}	654	}
556		655
		656	void noinline
		657	ev_feed_signal_event (EV_P_ int signum)
		658	{
		659	WL w;
		660
		661	#if EV_MULTIPLICITY
		662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		663	#endif
		664
		665	--signum;
		666
		667	if (signum < 0 || signum >= signalmax)
		668	return;
		669
		670	signals [signum].gotsig = 0;
		671
		672	for (w = signals [signum].head; w; w = w->next)
		673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		674	}
		675
557	static void	676	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
559	{	678	{
560	WL w;
561	int signum;	679	int signum;
562		680
563	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	682	gotsig = 0;
565		683
566	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
568	{	686	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	}	687	}
575		688
576	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
577	siginit (EV_P)	702	siginit (EV_P)
578	{	703	{
579	#ifndef WIN32	704	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	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		706
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	710	}
592		711
593	/*****************************************************************************/	712	/*****************************************************************************/
594		713
595	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
596		715
597	#ifndef WIN32	716	#ifndef _WIN32
598		717
599	static struct ev_signal childev;	718	static ev_signal childev;
600		719
601	#ifndef WCONTINUED	720	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)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
607	{	722	{
608	struct ev_child *w;	723	ev_child *w;
609		724
610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
611	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
612	{	727	{
613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614	w->rpid = pid;	729	w->rpid = pid;
615	w->rstatus = status;	730	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
617	}	732	}
618	}	733	}
619		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
620	static void	739	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
622	{	741	{
623	int pid, status;	742	int pid, status;
624		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
627	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* we need to do it this way so that the callback gets called before we continue */
628	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		754
630	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
632	}
633	}	757	}
634		758
635	#endif	759	#endif
636		760
637	/*****************************************************************************/	761	/*****************************************************************************/
638		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
639	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
641	#endif	768	#endif
642	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
660	{	787	{
661	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
662	}	789	}
663		790
664	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
665	static int	792	int inline_size
666	enable_secure (void)	793	enable_secure (void)
667	{	794	{
668	#ifdef WIN32	795	#ifdef _WIN32
669	return 0;	796	return 0;
670	#else	797	#else
671	return getuid () != geteuid ()	798	return getuid () != geteuid ()
672	|| getgid () != getegid ();	799	|| getgid () != getegid ();
673	#endif	800	#endif
674	}	801	}
675		802
676	int	803	unsigned int
677	ev_method (EV_P)	804	ev_supported_backends (void)
678	{	805	{
679	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	| EVBACKEND_KQUEUE
		840	| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
680	}	847	}
681		848
682	static void	849	static void
683	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
684	{	851	{
685	if (!method)	852	if (!backend)
686	{	853	{
687	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
688	{	855	{
689	struct timespec ts;	856	struct timespec ts;
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	858	have_monotonic = 1;
692	}	859	}
693	#endif	860	#endif
694		861
695	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	863	mn_now = get_clock ();
697	now_floor = mn_now;	864	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
699		866
700	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
701	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else
704	methods = EVMETHOD_ANY;
705		871
706	method = 0;	872	if (!(flags & 0x0000ffffUL))
707	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
709	#endif	878	#endif
710	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712	#endif	881	#endif
713	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715	#endif	884	#endif
716	#if EV_USE_POLL	885	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718	#endif	887	#endif
719	#if EV_USE_SELECT	888	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721	#endif	890	#endif
722		891
723	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
725	}	894	}
726	}	895	}
727		896
728	void	897	static void
729	loop_destroy (EV_P)	898	loop_destroy (EV_P)
730	{	899	{
731	int i;	900	int i;
732		901
733	#if EV_USE_WIN32	902	#if EV_USE_PORT
734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
735	#endif	904	#endif
736	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738	#endif	907	#endif
739	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741	#endif	910	#endif
742	#if EV_USE_POLL	911	#if EV_USE_POLL
743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744	#endif	913	#endif
745	#if EV_USE_SELECT	914	#if EV_USE_SELECT
746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747	#endif	916	#endif
748		917
749	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
750	array_free (pending, [i]);	919	array_free (pending, [i]);
751		920
752	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
754	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
755	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
756	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
757	array_free_microshit (prepare);	926	#endif
758	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
759		930
760	method = 0;	931	backend = 0;
761	}	932	}
762		933
763	static void	934	static void
764	loop_fork (EV_P)	935	loop_fork (EV_P)
765	{	936	{
		937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
766	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	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	945	#endif
772		946
773	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
774	{	948	{
775	/* default loop */	949	/* default loop */
…		…
788	postfork = 0;	962	postfork = 0;
789	}	963	}
790		964
791	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
792	struct ev_loop *	966	struct ev_loop *
793	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
794	{	968	{
795	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796		970
797	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
798		972
799	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
800		974
801	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
802	return loop;	976	return loop;
803		977
804	return 0;	978	return 0;
805	}	979	}
806		980
…		…
818	}	992	}
819		993
820	#endif	994	#endif
821		995
822	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
827	#else	999	#else
828	static int default_loop;
829
830	int	1000	int
		1001	ev_default_loop (unsigned int flags)
831	#endif	1002	#endif
832	ev_default_loop (int methods)
833	{	1003	{
834	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
836	return 0;	1006	return 0;
837		1007
838	if (!default_loop)	1008	if (!ev_default_loop_ptr)
839	{	1009	{
840	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	1012	#else
843	default_loop = 1;	1013	ev_default_loop_ptr = 1;
844	#endif	1014	#endif
845		1015
846	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
847		1017
848	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
849	{	1019	{
850	siginit (EV_A);	1020	siginit (EV_A);
851		1021
852	#ifndef WIN32	1022	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	1027	#endif
858	}	1028	}
859	else	1029	else
860	default_loop = 0;	1030	ev_default_loop_ptr = 0;
861	}	1031	}
862		1032
863	return default_loop;	1033	return ev_default_loop_ptr;
864	}	1034	}
865		1035
866	void	1036	void
867	ev_default_destroy (void)	1037	ev_default_destroy (void)
868	{	1038	{
869	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	1041	#endif
872		1042
873	#ifndef WIN32	1043	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
876	#endif	1046	#endif
877		1047
878	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
886		1056
887	void	1057	void
888	ev_default_fork (void)	1058	ev_default_fork (void)
889	{	1059	{
890	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	1062	#endif
893		1063
894	if (method)	1064	if (backend)
895	postfork = 1;	1065	postfork = 1;
896	}	1066	}
897		1067
898	/*****************************************************************************/	1068	/*****************************************************************************/
899		1069
900	static void	1070	int inline_size
		1071	any_pending (EV_P)
		1072	{
		1073	int pri;
		1074
		1075	for (pri = NUMPRI; pri--; )
		1076	if (pendingcnt [pri])
		1077	return 1;
		1078
		1079	return 0;
		1080	}
		1081
		1082	void inline_speed
901	call_pending (EV_P)	1083	call_pending (EV_P)
902	{	1084	{
903	int pri;	1085	int pri;
904		1086
905	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
907	{	1089	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1091
910	if (p->w)	1092	if (expect_true (p->w))
911	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
912	p->w->pending = 0;	1096	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
914	}	1098	}
915	}	1099	}
916	}	1100	}
917		1101
918	static void	1102	void inline_size
919	timers_reify (EV_P)	1103	timers_reify (EV_P)
920	{	1104	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1106	{
923	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
924		1108
925	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
926		1110
927	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
928	if (w->repeat)	1112	if (w->repeat)
929	{	1113	{
930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1115
931	((WT)w)->at = mn_now + w->repeat;	1116	((WT)w)->at += w->repeat;
		1117	if (((WT)w)->at < mn_now)
		1118	((WT)w)->at = mn_now;
		1119
932	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
933	}	1121	}
934	else	1122	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1124
937	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1126	}
939	}	1127	}
940		1128
941	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
942	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
943	{	1132	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1134	{
946	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
947		1136
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
949		1138
950	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
951	if (w->interval)	1140	if (w->reschedule_cb)
952	{	1141	{
		1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1144	downheap ((WT *)periodics, periodiccnt, 0);
		1145	}
		1146	else if (w->interval)
		1147	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1148	((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));	1149	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);	1150	downheap ((WT *)periodics, periodiccnt, 0);
956	}	1151	}
957	else	1152	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1154
960	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1156	}
962	}	1157	}
963		1158
964	static void	1159	static void noinline
965	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
966	{	1161	{
967	int i;	1162	int i;
968		1163
969	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
971	{	1166	{
972	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
973		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1171	else if (w->interval)
975	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((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	}	1173	}
987	}
988		1174
989	inline int	1175	/* now rebuild the heap */
		1176	for (i = periodiccnt >> 1; i--; )
		1177	downheap ((WT *)periodics, periodiccnt, i);
		1178	}
		1179	#endif
		1180
		1181	int inline_size
990	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
991	{	1183	{
992	mn_now = get_clock ();	1184	mn_now = get_clock ();
993		1185
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{	1187	{
996	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
997	return 0;	1189	return 0;
998	}	1190	}
999	else	1191	else
1000	{	1192	{
1001	now_floor = mn_now;	1193	now_floor = mn_now;
1002	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1003	return 1;	1195	return 1;
1004	}	1196	}
1005	}	1197	}
1006		1198
1007	static void	1199	void inline_size
1008	time_update (EV_P)	1200	time_update (EV_P)
1009	{	1201	{
1010	int i;	1202	int i;
1011		1203
1012	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1014	{	1206	{
1015	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1016	{	1208	{
1017	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1018		1210
1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
1020	{	1220	{
1021	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1022		1222
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1224	return; /* all is well */
1025		1225
1026	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1227	mn_now = get_clock ();
1028	now_floor = mn_now;	1228	now_floor = mn_now;
1029	}	1229	}
1030		1230
		1231	# if EV_PERIODIC_ENABLE
1031	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034	}	1236	}
1035	}	1237	}
1036	else	1238	else
1037	#endif	1239	#endif
1038	{	1240	{
1039	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1040		1242
1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1043	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1044		1248
1045	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
1046	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1048	}	1252	}
1049		1253
1050	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1051	}	1255	}
1052	}	1256	}
1053		1257
1054	void	1258	void
1055	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1066	static int loop_done;	1270	static int loop_done;
1067		1271
1068	void	1272	void
1069	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1070	{	1274	{
1071	double block;
1072	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1073		1278
1074	do	1279	while (activecnt)
1075	{	1280	{
1076	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1077	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1078	{	1283	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1086		1291
1087	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1293	fd_reify (EV_A);
1089		1294
1090	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1091		1298
1092	/* we only need this for !monotonic clockor timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1093	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1094	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1097	else	1307	else
1098	#endif	1308	#endif
1099	{	1309	{
1100	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1101	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1102	}	1312	}
1103		1313
1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
1105	block = 0.;
1106	else
1107	{
1108	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1109		1315
1110	if (timercnt)	1316	if (timercnt)
1111	{	1317	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113	if (block > to) block = to;	1319	if (block > to) block = to;
1114	}	1320	}
1115		1321
		1322	#if EV_PERIODIC_ENABLE
1116	if (periodiccnt)	1323	if (periodiccnt)
1117	{	1324	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119	if (block > to) block = to;	1326	if (block > to) block = to;
1120	}	1327	}
		1328	#endif
1121		1329
1122	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1123	}	1331	}
1124		1332
1125	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1126		1335
1127	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1337	time_update (EV_A);
1129		1338
1130	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1132	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1133		1344
1134	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1135	if (!pendingcnt)	1346	if (idlecnt && !any_pending (EV_A))
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1137		1348
1138	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1350	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1352
1142	call_pending (EV_A);	1353	call_pending (EV_A);
1143	}
1144	while (activecnt && !loop_done);
1145		1354
1146	if (loop_done != 2)	1355	if (expect_false (loop_done))
1147	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1148	}	1361	}
1149		1362
1150	void	1363	void
1151	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1152	{	1365	{
1153	loop_done = how;	1366	loop_done = how;
1154	}	1367	}
1155		1368
1156	/*****************************************************************************/	1369	/*****************************************************************************/
1157		1370
1158	inline void	1371	void inline_size
1159	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1160	{	1373	{
1161	elem->next = *head;	1374	elem->next = *head;
1162	*head = elem;	1375	*head = elem;
1163	}	1376	}
1164		1377
1165	inline void	1378	void inline_size
1166	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1167	{	1380	{
1168	while (*head)	1381	while (*head)
1169	{	1382	{
1170	if (*head == elem)	1383	if (*head == elem)
…		…
1175		1388
1176	head = &(*head)->next;	1389	head = &(*head)->next;
1177	}	1390	}
1178	}	1391	}
1179		1392
1180	inline void	1393	void inline_speed
1181	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1182	{	1395	{
1183	if (w->pending)	1396	if (w->pending)
1184	{	1397	{
1185	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186	w->pending = 0;	1399	w->pending = 0;
1187	}	1400	}
1188	}	1401	}
1189		1402
1190	inline void	1403	void inline_speed
1191	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1192	{	1405	{
1193	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1194	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195		1408
1196	w->active = active;	1409	w->active = active;
1197	ev_ref (EV_A);	1410	ev_ref (EV_A);
1198	}	1411	}
1199		1412
1200	inline void	1413	void inline_size
1201	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1202	{	1415	{
1203	ev_unref (EV_A);	1416	ev_unref (EV_A);
1204	w->active = 0;	1417	w->active = 0;
1205	}	1418	}
1206		1419
1207	/*****************************************************************************/	1420	/*****************************************************************************/
1208		1421
1209	void	1422	void
1210	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1211	{	1424	{
1212	int fd = w->fd;	1425	int fd = w->fd;
1213		1426
1214	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1215	return;	1428	return;
1216		1429
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1431
1219	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222		1435
1223	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1224	}	1437	}
1225		1438
1226	void	1439	void
1227	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1228	{	1441	{
1229	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1231	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232		1447
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1235		1450
1236	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1237	}	1452	}
1238		1453
1239	void	1454	void
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1241	{	1456	{
1242	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1243	return;	1458	return;
1244		1459
1245	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1246		1461
1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248		1463
1249	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1252	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1253		1468
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255	}	1470	}
1256		1471
1257	void	1472	void
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1259	{	1474	{
1260	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1262	return;	1477	return;
1263		1478
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265		1480
1266	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1267	{	1482	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1270	}	1485	}
1271		1486
1272	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1273		1488
1274	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1275	}	1490	}
1276		1491
1277	void	1492	void
1278	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1279	{	1494	{
1280	if (ev_is_active (w))	1495	if (ev_is_active (w))
1281	{	1496	{
1282	if (w->repeat)	1497	if (w->repeat)
1283	{	1498	{
1284	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286	}	1501	}
1287	else	1502	else
1288	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1289	}	1504	}
1290	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1292	}	1510	}
1293		1511
		1512	#if EV_PERIODIC_ENABLE
1294	void	1513	void
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1296	{	1515	{
1297	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1298	return;	1517	return;
1299		1518
		1519	if (w->reschedule_cb)
		1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1521	else if (w->interval)
		1522	{
1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	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 */	1524	/* 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;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1526	}
1305		1527
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1310		1532
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312	}	1534	}
1313		1535
1314	void	1536	void
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1316	{	1538	{
1317	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1319	return;	1541	return;
1320		1542
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322		1544
1323	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1324	{	1546	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1327	}	1549	}
1328		1550
1329	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1330	}	1552	}
1331		1553
1332	void	1554	void
		1555	ev_periodic_again (EV_P_ ev_periodic *w)
		1556	{
		1557	/* TODO: use adjustheap and recalculation */
		1558	ev_periodic_stop (EV_A_ w);
		1559	ev_periodic_start (EV_A_ w);
		1560	}
		1561	#endif
		1562
		1563	void
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1564	ev_idle_start (EV_P_ ev_idle *w)
1334	{	1565	{
1335	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1336	return;	1567	return;
1337		1568
1338	ev_start (EV_A_ (W)w, ++idlecnt);	1569	ev_start (EV_A_ (W)w, ++idlecnt);
1339	array_needsize (idles, idlemax, idlecnt, (void));	1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1340	idles [idlecnt - 1] = w;	1571	idles [idlecnt - 1] = w;
1341	}	1572	}
1342		1573
1343	void	1574	void
1344	ev_idle_stop (EV_P_ struct ev_idle *w)	1575	ev_idle_stop (EV_P_ ev_idle *w)
1345	{	1576	{
1346	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1347	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1348	return;	1579	return;
1349		1580
		1581	{
		1582	int active = ((W)w)->active;
1350	idles [((W)w)->active - 1] = idles [--idlecnt];	1583	idles [active - 1] = idles [--idlecnt];
		1584	((W)idles [active - 1])->active = active;
		1585	}
		1586
1351	ev_stop (EV_A_ (W)w);	1587	ev_stop (EV_A_ (W)w);
1352	}	1588	}
1353		1589
1354	void	1590	void
1355	ev_prepare_start (EV_P_ struct ev_prepare *w)	1591	ev_prepare_start (EV_P_ ev_prepare *w)
1356	{	1592	{
1357	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1358	return;	1594	return;
1359		1595
1360	ev_start (EV_A_ (W)w, ++preparecnt);	1596	ev_start (EV_A_ (W)w, ++preparecnt);
1361	array_needsize (prepares, preparemax, preparecnt, (void));	1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1362	prepares [preparecnt - 1] = w;	1598	prepares [preparecnt - 1] = w;
1363	}	1599	}
1364		1600
1365	void	1601	void
1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1367	{	1603	{
1368	ev_clear_pending (EV_A_ (W)w);	1604	ev_clear_pending (EV_A_ (W)w);
1369	if (ev_is_active (w))	1605	if (expect_false (!ev_is_active (w)))
1370	return;	1606	return;
1371		1607
		1608	{
		1609	int active = ((W)w)->active;
1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1610	prepares [active - 1] = prepares [--preparecnt];
		1611	((W)prepares [active - 1])->active = active;
		1612	}
		1613
1373	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1374	}	1615	}
1375		1616
1376	void	1617	void
1377	ev_check_start (EV_P_ struct ev_check *w)	1618	ev_check_start (EV_P_ ev_check *w)
1378	{	1619	{
1379	if (ev_is_active (w))	1620	if (expect_false (ev_is_active (w)))
1380	return;	1621	return;
1381		1622
1382	ev_start (EV_A_ (W)w, ++checkcnt);	1623	ev_start (EV_A_ (W)w, ++checkcnt);
1383	array_needsize (checks, checkmax, checkcnt, (void));	1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1384	checks [checkcnt - 1] = w;	1625	checks [checkcnt - 1] = w;
1385	}	1626	}
1386		1627
1387	void	1628	void
1388	ev_check_stop (EV_P_ struct ev_check *w)	1629	ev_check_stop (EV_P_ ev_check *w)
1389	{	1630	{
1390	ev_clear_pending (EV_A_ (W)w);	1631	ev_clear_pending (EV_A_ (W)w);
1391	if (ev_is_active (w))	1632	if (expect_false (!ev_is_active (w)))
1392	return;	1633	return;
1393		1634
		1635	{
		1636	int active = ((W)w)->active;
1394	checks [((W)w)->active - 1] = checks [--checkcnt];	1637	checks [active - 1] = checks [--checkcnt];
		1638	((W)checks [active - 1])->active = active;
		1639	}
		1640
1395	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1396	}	1642	}
1397		1643
1398	#ifndef SA_RESTART	1644	#ifndef SA_RESTART
1399	# define SA_RESTART 0	1645	# define SA_RESTART 0
1400	#endif	1646	#endif
1401		1647
1402	void	1648	void
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1649	ev_signal_start (EV_P_ ev_signal *w)
1404	{	1650	{
1405	#if EV_MULTIPLICITY	1651	#if EV_MULTIPLICITY
1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407	#endif	1653	#endif
1408	if (ev_is_active (w))	1654	if (expect_false (ev_is_active (w)))
1409	return;	1655	return;
1410		1656
1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412		1658
1413	ev_start (EV_A_ (W)w, 1);	1659	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);	1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416		1662
1417	if (!((WL)w)->next)	1663	if (!((WL)w)->next)
1418	{	1664	{
1419	#if WIN32	1665	#if _WIN32
1420	signal (w->signum, sighandler);	1666	signal (w->signum, sighandler);
1421	#else	1667	#else
1422	struct sigaction sa;	1668	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1669	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1670	sigfillset (&sa.sa_mask);
…		…
1427	#endif	1673	#endif
1428	}	1674	}
1429	}	1675	}
1430		1676
1431	void	1677	void
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1678	ev_signal_stop (EV_P_ ev_signal *w)
1433	{	1679	{
1434	ev_clear_pending (EV_A_ (W)w);	1680	ev_clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1681	if (expect_false (!ev_is_active (w)))
1436	return;	1682	return;
1437		1683
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1685	ev_stop (EV_A_ (W)w);
1440		1686
1441	if (!signals [w->signum - 1].head)	1687	if (!signals [w->signum - 1].head)
1442	signal (w->signum, SIG_DFL);	1688	signal (w->signum, SIG_DFL);
1443	}	1689	}
1444		1690
1445	void	1691	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1692	ev_child_start (EV_P_ ev_child *w)
1447	{	1693	{
1448	#if EV_MULTIPLICITY	1694	#if EV_MULTIPLICITY
1449	assert (("child watchers are only supported in the default loop", loop == default_loop));	1695	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450	#endif	1696	#endif
1451	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1452	return;	1698	return;
1453		1699
1454	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1456	}	1702	}
1457		1703
1458	void	1704	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1705	ev_child_stop (EV_P_ ev_child *w)
1460	{	1706	{
1461	ev_clear_pending (EV_A_ (W)w);	1707	ev_clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1708	if (expect_false (!ev_is_active (w)))
1463	return;	1709	return;
1464		1710
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1712	ev_stop (EV_A_ (W)w);
1467	}	1713	}
1468		1714
		1715	#if EV_EMBED_ENABLE
		1716	void noinline
		1717	ev_embed_sweep (EV_P_ ev_embed *w)
		1718	{
		1719	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1720	}
		1721
		1722	static void
		1723	embed_cb (EV_P_ ev_io *io, int revents)
		1724	{
		1725	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1726
		1727	if (ev_cb (w))
		1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1729	else
		1730	ev_embed_sweep (loop, w);
		1731	}
		1732
		1733	void
		1734	ev_embed_start (EV_P_ ev_embed *w)
		1735	{
		1736	if (expect_false (ev_is_active (w)))
		1737	return;
		1738
		1739	{
		1740	struct ev_loop *loop = w->loop;
		1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1743	}
		1744
		1745	ev_set_priority (&w->io, ev_priority (w));
		1746	ev_io_start (EV_A_ &w->io);
		1747
		1748	ev_start (EV_A_ (W)w, 1);
		1749	}
		1750
		1751	void
		1752	ev_embed_stop (EV_P_ ev_embed *w)
		1753	{
		1754	ev_clear_pending (EV_A_ (W)w);
		1755	if (expect_false (!ev_is_active (w)))
		1756	return;
		1757
		1758	ev_io_stop (EV_A_ &w->io);
		1759
		1760	ev_stop (EV_A_ (W)w);
		1761	}
		1762	#endif
		1763
		1764	#if EV_STAT_ENABLE
		1765
		1766	# ifdef _WIN32
		1767	# define lstat(a,b) stat(a,b)
		1768	# endif
		1769
		1770	#define DEF_STAT_INTERVAL 5.0074891
		1771	#define MIN_STAT_INTERVAL 0.1074891
		1772
		1773	void
		1774	ev_stat_stat (EV_P_ ev_stat *w)
		1775	{
		1776	if (lstat (w->path, &w->attr) < 0)
		1777	w->attr.st_nlink = 0;
		1778	else if (!w->attr.st_nlink)
		1779	w->attr.st_nlink = 1;
		1780	}
		1781
		1782	static void
		1783	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1784	{
		1785	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1786
		1787	/* we copy this here each the time so that */
		1788	/* prev has the old value when the callback gets invoked */
		1789	w->prev = w->attr;
		1790	ev_stat_stat (EV_A_ w);
		1791
		1792	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1793	ev_feed_event (EV_A_ w, EV_STAT);
		1794	}
		1795
		1796	void
		1797	ev_stat_start (EV_P_ ev_stat *w)
		1798	{
		1799	if (expect_false (ev_is_active (w)))
		1800	return;
		1801
		1802	/* since we use memcmp, we need to clear any padding data etc. */
		1803	memset (&w->prev, 0, sizeof (ev_statdata));
		1804	memset (&w->attr, 0, sizeof (ev_statdata));
		1805
		1806	ev_stat_stat (EV_A_ w);
		1807
		1808	if (w->interval < MIN_STAT_INTERVAL)
		1809	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1810
		1811	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1812	ev_set_priority (&w->timer, ev_priority (w));
		1813	ev_timer_start (EV_A_ &w->timer);
		1814
		1815	ev_start (EV_A_ (W)w, 1);
		1816	}
		1817
		1818	void
		1819	ev_stat_stop (EV_P_ ev_stat *w)
		1820	{
		1821	ev_clear_pending (EV_A_ (W)w);
		1822	if (expect_false (!ev_is_active (w)))
		1823	return;
		1824
		1825	ev_timer_stop (EV_A_ &w->timer);
		1826
		1827	ev_stop (EV_A_ (W)w);
		1828	}
		1829	#endif
		1830
1469	/*****************************************************************************/	1831	/*****************************************************************************/
1470		1832
1471	struct ev_once	1833	struct ev_once
1472	{	1834	{
1473	struct ev_io io;	1835	ev_io io;
1474	struct ev_timer to;	1836	ev_timer to;
1475	void (*cb)(int revents, void *arg);	1837	void (*cb)(int revents, void *arg);
1476	void *arg;	1838	void *arg;
1477	};	1839	};
1478		1840
1479	static void	1841	static void
…		…
1488		1850
1489	cb (revents, arg);	1851	cb (revents, arg);
1490	}	1852	}
1491		1853
1492	static void	1854	static void
1493	once_cb_io (EV_P_ struct ev_io *w, int revents)	1855	once_cb_io (EV_P_ ev_io *w, int revents)
1494	{	1856	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1857	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496	}	1858	}
1497		1859
1498	static void	1860	static void
1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1861	once_cb_to (EV_P_ ev_timer *w, int revents)
1500	{	1862	{
1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1863	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502	}	1864	}
1503		1865
1504	void	1866	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1867	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506	{	1868	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1869	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508		1870
1509	if (!once)	1871	if (expect_false (!once))
		1872	{
1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1873	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511	else	1874	return;
1512	{	1875	}
		1876
1513	once->cb = cb;	1877	once->cb = cb;
1514	once->arg = arg;	1878	once->arg = arg;
1515		1879
1516	ev_watcher_init (&once->io, once_cb_io);	1880	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	1881	if (fd >= 0)
1518	{	1882	{
1519	ev_io_set (&once->io, fd, events);	1883	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	1884	ev_io_start (EV_A_ &once->io);
1521	}	1885	}
1522		1886
1523	ev_watcher_init (&once->to, once_cb_to);	1887	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	1888	if (timeout >= 0.)
1525	{	1889	{
1526	ev_timer_set (&once->to, timeout, 0.);	1890	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	1891	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	1892	}
1530	}	1893	}
1531		1894
		1895	#ifdef __cplusplus
		1896	}
		1897	#endif
		1898

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