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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.146 by root, Tue Nov 27 09:17:51 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>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# 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
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# 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
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#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) */
127	#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) */
128	#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 */
129	/*#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 */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# 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
135	# 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
136	#else	200	#else
137	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
138	# define inline static	203	# define inline_size static
		204	# define noinline
139	#endif	205	#endif
140		206
141	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
143		209
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
147	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
150		219
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		221
		222	#ifdef _WIN32
153	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
154		225
155	/*****************************************************************************/	226	/*****************************************************************************/
156		227
157	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
158		229
		230	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	232	{
161	syserr_cb = cb;	233	syserr_cb = cb;
162	}	234	}
163		235
164	static void	236	static void noinline
165	syserr (const char *msg)	237	syserr (const char *msg)
166	{	238	{
167	if (!msg)	239	if (!msg)
168	msg = "(libev) system error";	240	msg = "(libev) system error";
169		241
…		…
176	}	248	}
177	}	249	}
178		250
179	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
180		252
		253	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	255	{
183	alloc = cb;	256	alloc = cb;
184	}	257	}
185		258
186	static void *	259	static void *
…		…
205	typedef struct	278	typedef struct
206	{	279	{
207	WL head;	280	WL head;
208	unsigned char events;	281	unsigned char events;
209	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
210	} ANFD;	286	} ANFD;
211		287
212	typedef struct	288	typedef struct
213	{	289	{
214	W w;	290	W w;
215	int events;	291	int events;
216	} ANPENDING;	292	} ANPENDING;
217		293
218	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
219		295
220	struct ev_loop	296	struct ev_loop
221	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	301	#include "ev_vars.h"
224	};
225	# undef VAR	302	#undef VAR
		303	};
226	# 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;
227		308
228	#else	309	#else
229		310
		311	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	313	#include "ev_vars.h"
232	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
233		317
234	#endif	318	#endif
235		319
236	/*****************************************************************************/	320	/*****************************************************************************/
237		321
238	inline ev_tstamp	322	ev_tstamp
239	ev_time (void)	323	ev_time (void)
240	{	324	{
241	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
242	struct timespec ts;	326	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	333	#endif
250	}	334	}
251		335
252	inline ev_tstamp	336	ev_tstamp inline_size
253	get_clock (void)	337	get_clock (void)
254	{	338	{
255	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
257	{	341	{
…		…
262	#endif	346	#endif
263		347
264	return ev_time ();	348	return ev_time ();
265	}	349	}
266		350
		351	#if EV_MULTIPLICITY
267	ev_tstamp	352	ev_tstamp
268	ev_now (EV_P)	353	ev_now (EV_P)
269	{	354	{
270	return rt_now;	355	return ev_rt_now;
271	}	356	}
		357	#endif
272		358
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		360
275	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
277	{ \	363	{ \
278	int newcnt = cur; \	364	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	382	}
297		383
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
304	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;
305		386
306	/*****************************************************************************/	387	/*****************************************************************************/
307		388
308	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
309	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
310	{	419	{
311	while (count--)	420	while (count--)
312	{	421	{
313	base->head = 0;	422	base->head = 0;
…		…
316		425
317	++base;	426	++base;
318	}	427	}
319	}	428	}
320		429
321	void	430	void inline_speed
322	ev_feed_event (EV_P_ void *w, int revents)
323	{
324	W w_ = (W)w;
325
326	if (w_->pending)
327	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;
330	}
331
332	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}
337
338	static void
339	queue_events (EV_P_ W *events, int eventcnt, int type)
340	{
341	int i;
342
343	for (i = 0; i < eventcnt; ++i)
344	ev_feed_event (EV_A_ events [i], type);
345	}
346
347	inline void
348	fd_event (EV_P_ int fd, int revents)	431	fd_event (EV_P_ int fd, int revents)
349	{	432	{
350	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	434	ev_io *w;
352		435
353	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)
354	{	437	{
355	int ev = w->events & revents;	438	int ev = w->events & revents;
356		439
357	if (ev)	440	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
363	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
364	{	447	{
365	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
366	}	449	}
367		450
368	/*****************************************************************************/	451	void inline_size
369
370	static void
371	fd_reify (EV_P)	452	fd_reify (EV_P)
372	{	453	{
373	int i;	454	int i;
374		455
375	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
376	{	457	{
377	int fd = fdchanges [i];	458	int fd = fdchanges [i];
378	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
379	struct ev_io *w;	460	ev_io *w;
380		461
381	int events = 0;	462	int events = 0;
382		463
383	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)
384	events |= w->events;	465	events |= w->events;
385		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
386	anfd->reify = 0;	476	anfd->reify = 0;
387		477
388	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	479	anfd->events = events;
390	}	480	}
391		481
392	fdchangecnt = 0;	482	fdchangecnt = 0;
393	}	483	}
394		484
395	static void	485	void inline_size
396	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
397	{	487	{
398	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
399	return;	489	return;
400		490
401	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
402		492
403	++fdchangecnt;	493	++fdchangecnt;
404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
406	}	496	}
407		497
408	static void	498	void inline_speed
409	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
410	{	500	{
411	struct ev_io *w;	501	ev_io *w;
412		502
413	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
414	{	504	{
415	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
416	ev_feed_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);
417	}	507	}
418	}	508	}
419		509
420	static int	510	int inline_size
421	fd_valid (int fd)	511	fd_valid (int fd)
422	{	512	{
423	#ifdef WIN32	513	#ifdef _WIN32
424	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
425	#else	515	#else
426	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
427	#endif	517	#endif
428	}	518	}
429		519
430	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
431	static void	521	static void noinline
432	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
433	{	523	{
434	int fd;	524	int fd;
435		525
436	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
438	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
439	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
440	}	530	}
441		531
442	/* 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 */
443	static void	533	static void noinline
444	fd_enomem (EV_P)	534	fd_enomem (EV_P)
445	{	535	{
446	int fd;	536	int fd;
447		537
448	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
451	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
452	return;	542	return;
453	}	543	}
454	}	544	}
455		545
456	/* 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 */
457	static void	547	static void noinline
458	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
459	{	549	{
460	int fd;	550	int fd;
461		551
462	/* 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 */
…		…
468	}	558	}
469	}	559	}
470		560
471	/*****************************************************************************/	561	/*****************************************************************************/
472		562
473	static void	563	void inline_speed
474	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
475	{	565	{
476	WT w = heap [k];	566	WT w = heap [k];
477		567
478	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
485	heap [k] = w;	575	heap [k] = w;
486	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
487		577
488	}	578	}
489		579
490	static void	580	void inline_speed
491	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
492	{	582	{
493	WT w = heap [k];	583	WT w = heap [k];
494		584
495	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
509		599
510	heap [k] = w;	600	heap [k] = w;
511	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
512	}	602	}
513		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
514	/*****************************************************************************/	611	/*****************************************************************************/
515		612
516	typedef struct	613	typedef struct
517	{	614	{
518	WL head;	615	WL head;
…		…
522	static ANSIG *signals;	619	static ANSIG *signals;
523	static int signalmax;	620	static int signalmax;
524		621
525	static int sigpipe [2];	622	static int sigpipe [2];
526	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
527	static struct ev_io sigev;	624	static ev_io sigev;
528		625
529	static void	626	void inline_size
530	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
531	{	628	{
532	while (count--)	629	while (count--)
533	{	630	{
534	base->head = 0;	631	base->head = 0;
…		…
539	}	636	}
540		637
541	static void	638	static void
542	sighandler (int signum)	639	sighandler (int signum)
543	{	640	{
544	#if WIN32	641	#if _WIN32
545	signal (signum, sighandler);	642	signal (signum, sighandler);
546	#endif	643	#endif
547		644
548	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
549		646
550	if (!gotsig)	647	if (!gotsig)
551	{	648	{
552	int old_errno = errno;	649	int old_errno = errno;
553	gotsig = 1;	650	gotsig = 1;
554	#ifdef WIN32
555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556	#else
557	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
558	#endif
559	errno = old_errno;	652	errno = old_errno;
560	}	653	}
561	}	654	}
562		655
563	void	656	void noinline
564	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
565	{	658	{
		659	WL w;
		660
566	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568	#endif	663	#endif
569		664
570	--signum;	665	--signum;
571		666
572	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
577	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
578	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579	}	674	}
580		675
581	static void	676	static void
582	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
583	{	678	{
584	WL w;
585	int signum;	679	int signum;
586		680
587	#ifdef WIN32
588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589	#else
590	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
591	#endif
592	gotsig = 0;	682	gotsig = 0;
593		683
594	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
595	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
596	sigevent (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
597	}	687	}
598		688
599	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
600	siginit (EV_P)	702	siginit (EV_P)
601	{	703	{
602	#ifndef WIN32	704	fd_intern (sigpipe [0]);
603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606	/* rather than sort out wether we really need nb, set it */
607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609	#endif
610		706
611	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
612	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
613	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
614	}	710	}
615		711
616	/*****************************************************************************/	712	/*****************************************************************************/
617		713
618	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
619		715
620	#ifndef WIN32	716	#ifndef _WIN32
621		717
622	static struct ev_signal childev;	718	static ev_signal childev;
623		719
624	#ifndef WCONTINUED	720	void inline_speed
625	# define WCONTINUED 0
626	#endif
627
628	static void
629	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)
630	{	722	{
631	struct ev_child *w;	723	ev_child *w;
632		724
633	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)
634	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
635	{	727	{
636	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637	w->rpid = pid;	729	w->rpid = pid;
638	w->rstatus = status;	730	w->rstatus = status;
639	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
640	}	732	}
641	}	733	}
642		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
643	static void	739	static void
644	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
645	{	741	{
646	int pid, status;	742	int pid, status;
647		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
650	/* 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 */
651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652		754
653	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
654	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 */
655	}
656	}	757	}
657		758
658	#endif	759	#endif
659		760
660	/*****************************************************************************/	761	/*****************************************************************************/
661		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
662	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
664	#endif	768	#endif
665	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
683	{	787	{
684	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
685	}	789	}
686		790
687	/* 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 */
688	static int	792	int inline_size
689	enable_secure (void)	793	enable_secure (void)
690	{	794	{
691	#ifdef WIN32	795	#ifdef _WIN32
692	return 0;	796	return 0;
693	#else	797	#else
694	return getuid () != geteuid ()	798	return getuid () != geteuid ()
695	|| getgid () != getegid ();	799	|| getgid () != getegid ();
696	#endif	800	#endif
697	}	801	}
698		802
699	int	803	unsigned int
700	ev_method (EV_P)	804	ev_supported_backends (void)
701	{	805	{
702	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;
703	}	847	}
704		848
705	static void	849	static void
706	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
707	{	851	{
708	if (!method)	852	if (!backend)
709	{	853	{
710	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
711	{	855	{
712	struct timespec ts;	856	struct timespec ts;
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	858	have_monotonic = 1;
715	}	859	}
716	#endif	860	#endif
717		861
718	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	863	mn_now = get_clock ();
720	now_floor = mn_now;	864	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
722		866
723	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else
727	methods = EVMETHOD_ANY;
728		871
729	method = 0;	872	if (!(flags & 0x0000ffffUL))
730	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
731	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);
732	#endif	878	#endif
733	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735	#endif	881	#endif
736	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738	#endif	884	#endif
739	#if EV_USE_POLL	885	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741	#endif	887	#endif
742	#if EV_USE_SELECT	888	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744	#endif	890	#endif
745		891
746	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
748	}	894	}
749	}	895	}
750		896
751	void	897	static void
752	loop_destroy (EV_P)	898	loop_destroy (EV_P)
753	{	899	{
754	int i;	900	int i;
755		901
756	#if EV_USE_WIN32	902	#if EV_USE_PORT
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	904	#endif
759	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	907	#endif
762	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	910	#endif
765	#if EV_USE_POLL	911	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	913	#endif
768	#if EV_USE_SELECT	914	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	916	#endif
771		917
772	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
773	array_free (pending, [i]);	919	array_free (pending, [i]);
774		920
775	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
777	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
778	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
779	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
780	array_free_microshit (prepare);	926	#endif
781	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
782		930
783	method = 0;	931	backend = 0;
784	}	932	}
785		933
786	static void	934	static void
787	loop_fork (EV_P)	935	loop_fork (EV_P)
788	{	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
789	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif
792	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794	#endif	945	#endif
795		946
796	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
797	{	948	{
798	/* default loop */	949	/* default loop */
…		…
811	postfork = 0;	962	postfork = 0;
812	}	963	}
813		964
814	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
815	struct ev_loop *	966	struct ev_loop *
816	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
817	{	968	{
818	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));
819		970
820	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
821		972
822	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
823		974
824	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
825	return loop;	976	return loop;
826		977
827	return 0;	978	return 0;
828	}	979	}
829		980
…		…
841	}	992	}
842		993
843	#endif	994	#endif
844		995
845	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
850	#else	999	#else
851	static int default_loop;
852
853	int	1000	int
		1001	ev_default_loop (unsigned int flags)
854	#endif	1002	#endif
855	ev_default_loop (int methods)
856	{	1003	{
857	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
859	return 0;	1006	return 0;
860		1007
861	if (!default_loop)	1008	if (!ev_default_loop_ptr)
862	{	1009	{
863	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	1012	#else
866	default_loop = 1;	1013	ev_default_loop_ptr = 1;
867	#endif	1014	#endif
868		1015
869	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
870		1017
871	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
872	{	1019	{
873	siginit (EV_A);	1020	siginit (EV_A);
874		1021
875	#ifndef WIN32	1022	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	1027	#endif
881	}	1028	}
882	else	1029	else
883	default_loop = 0;	1030	ev_default_loop_ptr = 0;
884	}	1031	}
885		1032
886	return default_loop;	1033	return ev_default_loop_ptr;
887	}	1034	}
888		1035
889	void	1036	void
890	ev_default_destroy (void)	1037	ev_default_destroy (void)
891	{	1038	{
892	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1041	#endif
895		1042
896	#ifndef WIN32	1043	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
899	#endif	1046	#endif
900		1047
901	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
909		1056
910	void	1057	void
911	ev_default_fork (void)	1058	ev_default_fork (void)
912	{	1059	{
913	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1062	#endif
916		1063
917	if (method)	1064	if (backend)
918	postfork = 1;	1065	postfork = 1;
919	}	1066	}
920		1067
921	/*****************************************************************************/	1068	/*****************************************************************************/
922		1069
923	static int	1070	int inline_size
924	any_pending (EV_P)	1071	any_pending (EV_P)
925	{	1072	{
926	int pri;	1073	int pri;
927		1074
928	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
930	return 1;	1077	return 1;
931		1078
932	return 0;	1079	return 0;
933	}	1080	}
934		1081
935	static void	1082	void inline_speed
936	call_pending (EV_P)	1083	call_pending (EV_P)
937	{	1084	{
938	int pri;	1085	int pri;
939		1086
940	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
942	{	1089	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1091
945	if (p->w)	1092	if (expect_true (p->w))
946	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
947	p->w->pending = 0;	1096	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
949	}	1098	}
950	}	1099	}
951	}	1100	}
952		1101
953	static void	1102	void inline_size
954	timers_reify (EV_P)	1103	timers_reify (EV_P)
955	{	1104	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1106	{
958	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
959		1108
960	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
961		1110
962	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
963	if (w->repeat)	1112	if (w->repeat)
964	{	1113	{
965	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
966	((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
967	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
968	}	1121	}
969	else	1122	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1124
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1126	}
974	}	1127	}
975		1128
976	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
977	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
978	{	1132	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1134	{
981	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
982		1136
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984		1138
985	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
987	{	1141	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
989
990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
992	}	1145	}
993	else if (w->interval)	1146	else if (w->interval)
994	{	1147	{
995	((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;
996	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));
997	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
998	}	1151	}
999	else	1152	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1154
1002	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1003	}	1156	}
1004	}	1157	}
1005		1158
1006	static void	1159	static void noinline
1007	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1008	{	1161	{
1009	int i;	1162	int i;
1010		1163
1011	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1012	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1013	{	1166	{
1014	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1015		1168
1016	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1171	else if (w->interval)
1019	((WT)w)->at += 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;
1020	}	1173	}
1021		1174
1022	/* now rebuild the heap */	1175	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1025	}	1178	}
		1179	#endif
1026		1180
1027	inline int	1181	int inline_size
1028	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1029	{	1183	{
1030	mn_now = get_clock ();	1184	mn_now = get_clock ();
1031		1185
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{	1187	{
1034	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1035	return 0;	1189	return 0;
1036	}	1190	}
1037	else	1191	else
1038	{	1192	{
1039	now_floor = mn_now;	1193	now_floor = mn_now;
1040	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1041	return 1;	1195	return 1;
1042	}	1196	}
1043	}	1197	}
1044		1198
1045	static void	1199	void inline_size
1046	time_update (EV_P)	1200	time_update (EV_P)
1047	{	1201	{
1048	int i;	1202	int i;
1049		1203
1050	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1052	{	1206	{
1053	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1054	{	1208	{
1055	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1056		1210
1057	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; )
1058	{	1220	{
1059	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1060		1222
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1224	return; /* all is well */
1063		1225
1064	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1227	mn_now = get_clock ();
1066	now_floor = mn_now;	1228	now_floor = mn_now;
1067	}	1229	}
1068		1230
		1231	# if EV_PERIODIC_ENABLE
1069	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1072	}	1236	}
1073	}	1237	}
1074	else	1238	else
1075	#endif	1239	#endif
1076	{	1240	{
1077	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1078		1242
1079	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))
1080	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1081	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1082		1248
1083	/* 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 */
1084	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1086	}	1252	}
1087		1253
1088	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1089	}	1255	}
1090	}	1256	}
1091		1257
1092	void	1258	void
1093	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1104	static int loop_done;	1270	static int loop_done;
1105		1271
1106	void	1272	void
1107	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1108	{	1274	{
1109	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1111		1278
1112	do	1279	while (activecnt)
1113	{	1280	{
1114	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1115	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1116	{	1283	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1124		1291
1125	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1126	fd_reify (EV_A);	1293	fd_reify (EV_A);
1127		1294
1128	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1129		1298
1130	/* we only need this for !monotonic clock or timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1131	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 */
1132	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1133	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1135	else	1307	else
1136	#endif	1308	#endif
1137	{	1309	{
1138	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1139	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1140	}	1312	}
1141		1313
1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
1143	block = 0.;
1144	else
1145	{
1146	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1147		1315
1148	if (timercnt)	1316	if (timercnt)
1149	{	1317	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151	if (block > to) block = to;	1319	if (block > to) block = to;
1152	}	1320	}
1153		1321
		1322	#if EV_PERIODIC_ENABLE
1154	if (periodiccnt)	1323	if (periodiccnt)
1155	{	1324	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157	if (block > to) block = to;	1326	if (block > to) block = to;
1158	}	1327	}
		1328	#endif
1159		1329
1160	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1161	}	1331	}
1162		1332
1163	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1164		1335
1165	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1337	time_update (EV_A);
1167		1338
1168	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1170	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1171		1344
1172	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1173	if (idlecnt && !any_pending (EV_A))	1346	if (idlecnt && !any_pending (EV_A))
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1175		1348
1176	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1350	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1352
1180	call_pending (EV_A);	1353	call_pending (EV_A);
1181	}
1182	while (activecnt && !loop_done);
1183		1354
1184	if (loop_done != 2)	1355	if (expect_false (loop_done))
1185	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1186	}	1361	}
1187		1362
1188	void	1363	void
1189	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1190	{	1365	{
1191	loop_done = how;	1366	loop_done = how;
1192	}	1367	}
1193		1368
1194	/*****************************************************************************/	1369	/*****************************************************************************/
1195		1370
1196	inline void	1371	void inline_size
1197	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1198	{	1373	{
1199	elem->next = *head;	1374	elem->next = *head;
1200	*head = elem;	1375	*head = elem;
1201	}	1376	}
1202		1377
1203	inline void	1378	void inline_size
1204	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1205	{	1380	{
1206	while (*head)	1381	while (*head)
1207	{	1382	{
1208	if (*head == elem)	1383	if (*head == elem)
…		…
1213		1388
1214	head = &(*head)->next;	1389	head = &(*head)->next;
1215	}	1390	}
1216	}	1391	}
1217		1392
1218	inline void	1393	void inline_speed
1219	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1220	{	1395	{
1221	if (w->pending)	1396	if (w->pending)
1222	{	1397	{
1223	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1224	w->pending = 0;	1399	w->pending = 0;
1225	}	1400	}
1226	}	1401	}
1227		1402
1228	inline void	1403	void inline_speed
1229	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1230	{	1405	{
1231	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1232	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1233		1408
1234	w->active = active;	1409	w->active = active;
1235	ev_ref (EV_A);	1410	ev_ref (EV_A);
1236	}	1411	}
1237		1412
1238	inline void	1413	void inline_size
1239	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1240	{	1415	{
1241	ev_unref (EV_A);	1416	ev_unref (EV_A);
1242	w->active = 0;	1417	w->active = 0;
1243	}	1418	}
1244		1419
1245	/*****************************************************************************/	1420	/*****************************************************************************/
1246		1421
1247	void	1422	void
1248	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1249	{	1424	{
1250	int fd = w->fd;	1425	int fd = w->fd;
1251		1426
1252	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1253	return;	1428	return;
1254		1429
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1431
1257	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
…		…
1260		1435
1261	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1262	}	1437	}
1263		1438
1264	void	1439	void
1265	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1266	{	1441	{
1267	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1269	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270		1447
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1273		1450
1274	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1275	}	1452	}
1276		1453
1277	void	1454	void
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1279	{	1456	{
1280	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1281	return;	1458	return;
1282		1459
1283	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1284		1461
1285	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.));
1286		1463
1287	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1290	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1291		1468
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293	}	1470	}
1294		1471
1295	void	1472	void
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1297	{	1474	{
1298	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1300	return;	1477	return;
1301		1478
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303		1480
1304	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1305	{	1482	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1308	}	1485	}
1309		1486
1310	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1311		1488
1312	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1313	}	1490	}
1314		1491
1315	void	1492	void
1316	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1317	{	1494	{
1318	if (ev_is_active (w))	1495	if (ev_is_active (w))
1319	{	1496	{
1320	if (w->repeat)	1497	if (w->repeat)
1321	{	1498	{
1322	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324	}	1501	}
1325	else	1502	else
1326	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1327	}	1504	}
1328	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1330	}	1510	}
1331		1511
		1512	#if EV_PERIODIC_ENABLE
1332	void	1513	void
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1334	{	1515	{
1335	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1336	return;	1517	return;
1337		1518
1338	if (w->reschedule_cb)	1519	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1521	else if (w->interval)
1341	{	1522	{
1342	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.));
1343	/* 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 */
1344	((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;
1345	}	1526	}
1346		1527
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1351		1532
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353	}	1534	}
1354		1535
1355	void	1536	void
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1357	{	1538	{
1358	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1360	return;	1541	return;
1361		1542
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363		1544
1364	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1365	{	1546	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1368	}	1549	}
1369		1550
1370	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1371	}	1552	}
1372		1553
1373	void	1554	void
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1375	{	1556	{
		1557	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1558	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1559	ev_periodic_start (EV_A_ w);
1378	}	1560	}
1379		1561	#endif
1380	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)
1382	{
1383	if (ev_is_active (w))
1384	return;
1385
1386	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388	idles [idlecnt - 1] = w;
1389	}
1390
1391	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)
1393	{
1394	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))
1396	return;
1397
1398	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);
1400	}
1401
1402	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)
1404	{
1405	if (ev_is_active (w))
1406	return;
1407
1408	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410	prepares [preparecnt - 1] = w;
1411	}
1412
1413	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415	{
1416	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))
1418	return;
1419
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);
1422	}
1423
1424	void
1425	ev_check_start (EV_P_ struct ev_check *w)
1426	{
1427	if (ev_is_active (w))
1428	return;
1429
1430	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432	checks [checkcnt - 1] = w;
1433	}
1434
1435	void
1436	ev_check_stop (EV_P_ struct ev_check *w)
1437	{
1438	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))
1440	return;
1441
1442	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);
1444	}
1445		1562
1446	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1447	# define SA_RESTART 0	1564	# define SA_RESTART 0
1448	#endif	1565	#endif
1449		1566
1450	void	1567	void
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1452	{	1569	{
1453	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1572	#endif
1456	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1457	return;	1574	return;
1458		1575
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1577
1461	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464		1581
1465	if (!((WL)w)->next)	1582	if (!((WL)w)->next)
1466	{	1583	{
1467	#if WIN32	1584	#if _WIN32
1468	signal (w->signum, sighandler);	1585	signal (w->signum, sighandler);
1469	#else	1586	#else
1470	struct sigaction sa;	1587	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
…		…
1475	#endif	1592	#endif
1476	}	1593	}
1477	}	1594	}
1478		1595
1479	void	1596	void
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1481	{	1598	{
1482	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1484	return;	1601	return;
1485		1602
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1488		1605
1489	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1490	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1491	}	1608	}
1492		1609
1493	void	1610	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1495	{	1612	{
1496	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1615	#endif
1499	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1500	return;	1617	return;
1501		1618
1502	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1504	}	1621	}
1505		1622
1506	void	1623	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1508	{	1625	{
1509	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1511	return;	1628	return;
1512		1629
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1515	}	1632	}
1516		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# undef lstat
		1638	# define lstat(a,b) _stati64 (a,b)
		1639	# endif
		1640
		1641	#define DEF_STAT_INTERVAL 5.0074891
		1642	#define MIN_STAT_INTERVAL 0.1074891
		1643
		1644	void
		1645	ev_stat_stat (EV_P_ ev_stat *w)
		1646	{
		1647	if (lstat (w->path, &w->attr) < 0)
		1648	w->attr.st_nlink = 0;
		1649	else if (!w->attr.st_nlink)
		1650	w->attr.st_nlink = 1;
		1651	}
		1652
		1653	static void
		1654	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1655	{
		1656	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1657
		1658	/* we copy this here each the time so that */
		1659	/* prev has the old value when the callback gets invoked */
		1660	w->prev = w->attr;
		1661	ev_stat_stat (EV_A_ w);
		1662
		1663	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1664	ev_feed_event (EV_A_ w, EV_STAT);
		1665	}
		1666
		1667	void
		1668	ev_stat_start (EV_P_ ev_stat *w)
		1669	{
		1670	if (expect_false (ev_is_active (w)))
		1671	return;
		1672
		1673	/* since we use memcmp, we need to clear any padding data etc. */
		1674	memset (&w->prev, 0, sizeof (ev_statdata));
		1675	memset (&w->attr, 0, sizeof (ev_statdata));
		1676
		1677	ev_stat_stat (EV_A_ w);
		1678
		1679	if (w->interval < MIN_STAT_INTERVAL)
		1680	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1681
		1682	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1683	ev_set_priority (&w->timer, ev_priority (w));
		1684	ev_timer_start (EV_A_ &w->timer);
		1685
		1686	ev_start (EV_A_ (W)w, 1);
		1687	}
		1688
		1689	void
		1690	ev_stat_stop (EV_P_ ev_stat *w)
		1691	{
		1692	ev_clear_pending (EV_A_ (W)w);
		1693	if (expect_false (!ev_is_active (w)))
		1694	return;
		1695
		1696	ev_timer_stop (EV_A_ &w->timer);
		1697
		1698	ev_stop (EV_A_ (W)w);
		1699	}
		1700	#endif
		1701
		1702	void
		1703	ev_idle_start (EV_P_ ev_idle *w)
		1704	{
		1705	if (expect_false (ev_is_active (w)))
		1706	return;
		1707
		1708	ev_start (EV_A_ (W)w, ++idlecnt);
		1709	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1710	idles [idlecnt - 1] = w;
		1711	}
		1712
		1713	void
		1714	ev_idle_stop (EV_P_ ev_idle *w)
		1715	{
		1716	ev_clear_pending (EV_A_ (W)w);
		1717	if (expect_false (!ev_is_active (w)))
		1718	return;
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722	idles [active - 1] = idles [--idlecnt];
		1723	((W)idles [active - 1])->active = active;
		1724	}
		1725
		1726	ev_stop (EV_A_ (W)w);
		1727	}
		1728
		1729	void
		1730	ev_prepare_start (EV_P_ ev_prepare *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	ev_start (EV_A_ (W)w, ++preparecnt);
		1736	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1737	prepares [preparecnt - 1] = w;
		1738	}
		1739
		1740	void
		1741	ev_prepare_stop (EV_P_ ev_prepare *w)
		1742	{
		1743	ev_clear_pending (EV_A_ (W)w);
		1744	if (expect_false (!ev_is_active (w)))
		1745	return;
		1746
		1747	{
		1748	int active = ((W)w)->active;
		1749	prepares [active - 1] = prepares [--preparecnt];
		1750	((W)prepares [active - 1])->active = active;
		1751	}
		1752
		1753	ev_stop (EV_A_ (W)w);
		1754	}
		1755
		1756	void
		1757	ev_check_start (EV_P_ ev_check *w)
		1758	{
		1759	if (expect_false (ev_is_active (w)))
		1760	return;
		1761
		1762	ev_start (EV_A_ (W)w, ++checkcnt);
		1763	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1764	checks [checkcnt - 1] = w;
		1765	}
		1766
		1767	void
		1768	ev_check_stop (EV_P_ ev_check *w)
		1769	{
		1770	ev_clear_pending (EV_A_ (W)w);
		1771	if (expect_false (!ev_is_active (w)))
		1772	return;
		1773
		1774	{
		1775	int active = ((W)w)->active;
		1776	checks [active - 1] = checks [--checkcnt];
		1777	((W)checks [active - 1])->active = active;
		1778	}
		1779
		1780	ev_stop (EV_A_ (W)w);
		1781	}
		1782
		1783	#if EV_EMBED_ENABLE
		1784	void noinline
		1785	ev_embed_sweep (EV_P_ ev_embed *w)
		1786	{
		1787	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1788	}
		1789
		1790	static void
		1791	embed_cb (EV_P_ ev_io *io, int revents)
		1792	{
		1793	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1794
		1795	if (ev_cb (w))
		1796	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1797	else
		1798	ev_embed_sweep (loop, w);
		1799	}
		1800
		1801	void
		1802	ev_embed_start (EV_P_ ev_embed *w)
		1803	{
		1804	if (expect_false (ev_is_active (w)))
		1805	return;
		1806
		1807	{
		1808	struct ev_loop *loop = w->loop;
		1809	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1810	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1811	}
		1812
		1813	ev_set_priority (&w->io, ev_priority (w));
		1814	ev_io_start (EV_A_ &w->io);
		1815
		1816	ev_start (EV_A_ (W)w, 1);
		1817	}
		1818
		1819	void
		1820	ev_embed_stop (EV_P_ ev_embed *w)
		1821	{
		1822	ev_clear_pending (EV_A_ (W)w);
		1823	if (expect_false (!ev_is_active (w)))
		1824	return;
		1825
		1826	ev_io_stop (EV_A_ &w->io);
		1827
		1828	ev_stop (EV_A_ (W)w);
		1829	}
		1830	#endif
		1831
1517	/*****************************************************************************/	1832	/*****************************************************************************/
1518		1833
1519	struct ev_once	1834	struct ev_once
1520	{	1835	{
1521	struct ev_io io;	1836	ev_io io;
1522	struct ev_timer to;	1837	ev_timer to;
1523	void (*cb)(int revents, void *arg);	1838	void (*cb)(int revents, void *arg);
1524	void *arg;	1839	void *arg;
1525	};	1840	};
1526		1841
1527	static void	1842	static void
…		…
1536		1851
1537	cb (revents, arg);	1852	cb (revents, arg);
1538	}	1853	}
1539		1854
1540	static void	1855	static void
1541	once_cb_io (EV_P_ struct ev_io *w, int revents)	1856	once_cb_io (EV_P_ ev_io *w, int revents)
1542	{	1857	{
1543	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1858	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544	}	1859	}
1545		1860
1546	static void	1861	static void
1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1862	once_cb_to (EV_P_ ev_timer *w, int revents)
1548	{	1863	{
1549	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1864	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550	}	1865	}
1551		1866
1552	void	1867	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1868	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554	{	1869	{
1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1870	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556		1871
1557	if (!once)	1872	if (expect_false (!once))
		1873	{
1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1874	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559	else	1875	return;
1560	{	1876	}
		1877
1561	once->cb = cb;	1878	once->cb = cb;
1562	once->arg = arg;	1879	once->arg = arg;
1563		1880
1564	ev_watcher_init (&once->io, once_cb_io);	1881	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	1882	if (fd >= 0)
1566	{	1883	{
1567	ev_io_set (&once->io, fd, events);	1884	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	1885	ev_io_start (EV_A_ &once->io);
1569	}	1886	}
1570		1887
1571	ev_watcher_init (&once->to, once_cb_to);	1888	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	1889	if (timeout >= 0.)
1573	{	1890	{
1574	ev_timer_set (&once->to, timeout, 0.);	1891	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	1892	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	1893	}
1578	}	1894	}
1579		1895
		1896	#ifdef __cplusplus
		1897	}
		1898	#endif
		1899

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