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Comparing libev/ev.c (file contents):
Revision 1.77 by root, Thu Nov 8 00:44:17 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>
…		…
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)
138	# define inline static	202	# define inline_speed static
		203	# define inline_minimal 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	static void	430	void inline_speed
322	event (EV_P_ W w, int events)
323	{
324	if (w->pending)
325	{
326	pendings [ABSPRI (w)][w->pending - 1].events |= events;
327	return;
328	}
329
330	w->pending = ++pendingcnt [ABSPRI (w)];
331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332	pendings [ABSPRI (w)][w->pending - 1].w = w;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;
334	}
335
336	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{
339	int i;
340
341	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);
343	}
344
345	static void
346	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
347	{	432	{
348	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	434	ev_io *w;
350		435
351	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)
352	{	437	{
353	int ev = w->events & events;	438	int ev = w->events & revents;
354		439
355	if (ev)	440	if (ev)
356	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
357	}	442	}
358	}	443	}
359		444
360	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
361		450
362	static void	451	void inline_size
363	fd_reify (EV_P)	452	fd_reify (EV_P)
364	{	453	{
365	int i;	454	int i;
366		455
367	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
368	{	457	{
369	int fd = fdchanges [i];	458	int fd = fdchanges [i];
370	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
371	struct ev_io *w;	460	ev_io *w;
372		461
373	int events = 0;	462	int events = 0;
374		463
375	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)
376	events |= w->events;	465	events |= w->events;
377		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
378	anfd->reify = 0;	476	anfd->reify = 0;
379		477
380	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	479	anfd->events = events;
382	}	480	}
383		481
384	fdchangecnt = 0;	482	fdchangecnt = 0;
385	}	483	}
386		484
387	static void	485	void inline_size
388	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
389	{	487	{
390	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
391	return;	489	return;
392		490
393	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
394		492
395	++fdchangecnt;	493	++fdchangecnt;
396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
398	}	496	}
399		497
400	static void	498	void inline_speed
401	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
402	{	500	{
403	struct ev_io *w;	501	ev_io *w;
404		502
405	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
406	{	504	{
407	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
408	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);
409	}	507	}
410	}	508	}
411		509
412	static int	510	int inline_size
413	fd_valid (int fd)	511	fd_valid (int fd)
414	{	512	{
415	#ifdef WIN32	513	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
417	#else	515	#else
418	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
419	#endif	517	#endif
420	}	518	}
421		519
422	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
423	static void	521	static void noinline
424	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
425	{	523	{
426	int fd;	524	int fd;
427		525
428	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
430	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
431	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
432	}	530	}
433		531
434	/* 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 */
435	static void	533	static void noinline
436	fd_enomem (EV_P)	534	fd_enomem (EV_P)
437	{	535	{
438	int fd;	536	int fd;
439		537
440	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
443	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
444	return;	542	return;
445	}	543	}
446	}	544	}
447		545
448	/* 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 */
449	static void	547	static void noinline
450	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
451	{	549	{
452	int fd;	550	int fd;
453		551
454	/* 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 */
…		…
460	}	558	}
461	}	559	}
462		560
463	/*****************************************************************************/	561	/*****************************************************************************/
464		562
465	static void	563	void inline_speed
466	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
467	{	565	{
468	WT w = heap [k];	566	WT w = heap [k];
469		567
470	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
477	heap [k] = w;	575	heap [k] = w;
478	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
479		577
480	}	578	}
481		579
482	static void	580	void inline_speed
483	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
484	{	582	{
485	WT w = heap [k];	583	WT w = heap [k];
486		584
487	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
501		599
502	heap [k] = w;	600	heap [k] = w;
503	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
504	}	602	}
505		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
506	/*****************************************************************************/	611	/*****************************************************************************/
507		612
508	typedef struct	613	typedef struct
509	{	614	{
510	WL head;	615	WL head;
…		…
514	static ANSIG *signals;	619	static ANSIG *signals;
515	static int signalmax;	620	static int signalmax;
516		621
517	static int sigpipe [2];	622	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	624	static ev_io sigev;
520		625
521	static void	626	void inline_size
522	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
523	{	628	{
524	while (count--)	629	while (count--)
525	{	630	{
526	base->head = 0;	631	base->head = 0;
…		…
531	}	636	}
532		637
533	static void	638	static void
534	sighandler (int signum)	639	sighandler (int signum)
535	{	640	{
536	#if WIN32	641	#if _WIN32
537	signal (signum, sighandler);	642	signal (signum, sighandler);
538	#endif	643	#endif
539		644
540	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
541		646
542	if (!gotsig)	647	if (!gotsig)
543	{	648	{
544	int old_errno = errno;	649	int old_errno = errno;
545	gotsig = 1;	650	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	652	errno = old_errno;
552	}	653	}
553	}	654	}
554		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
555	static void	676	static void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
557	{	678	{
558	WL w;
559	int signum;	679	int signum;
560		680
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	682	gotsig = 0;
567		683
568	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
570	{	686	ev_feed_signal_event (EV_A_ signum + 1);
571	signals [signum].gotsig = 0;
572
573	for (w = signals [signum].head; w; w = w->next)
574	event (EV_A_ (W)w, EV_SIGNAL);
575	}
576	}	687	}
577		688
578	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
579	siginit (EV_P)	702	siginit (EV_P)
580	{	703	{
581	#ifndef WIN32	704	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
583	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585	/* rather than sort out wether we really need nb, set it */
586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588	#endif
589		706
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	710	}
594		711
595	/*****************************************************************************/	712	/*****************************************************************************/
596		713
597	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
598		715
599	#ifndef WIN32	716	#ifndef _WIN32
600		717
601	static struct ev_signal childev;	718	static ev_signal childev;
602		719
603	#ifndef WCONTINUED	720	void inline_speed
604	# define WCONTINUED 0
605	#endif
606
607	static void
608	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)
609	{	722	{
610	struct ev_child *w;	723	ev_child *w;
611		724
612	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)
613	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
614	{	727	{
615	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616	w->rpid = pid;	729	w->rpid = pid;
617	w->rstatus = status;	730	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	732	}
620	}	733	}
621		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
622	static void	739	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
624	{	741	{
625	int pid, status;	742	int pid, status;
626		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
629	/* 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 */
630	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		754
632	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
633	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 */
634	}
635	}	757	}
636		758
637	#endif	759	#endif
638		760
639	/*****************************************************************************/	761	/*****************************************************************************/
640		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
641	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
643	#endif	768	#endif
644	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
662	{	787	{
663	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
664	}	789	}
665		790
666	/* 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 */
667	static int	792	int inline_size
668	enable_secure (void)	793	enable_secure (void)
669	{	794	{
670	#ifdef WIN32	795	#ifdef _WIN32
671	return 0;	796	return 0;
672	#else	797	#else
673	return getuid () != geteuid ()	798	return getuid () != geteuid ()
674	|| getgid () != getegid ();	799	|| getgid () != getegid ();
675	#endif	800	#endif
676	}	801	}
677		802
678	int	803	unsigned int
679	ev_method (EV_P)	804	ev_supported_backends (void)
680	{	805	{
681	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;
682	}	847	}
683		848
684	static void	849	static void
685	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
686	{	851	{
687	if (!method)	852	if (!backend)
688	{	853	{
689	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
690	{	855	{
691	struct timespec ts;	856	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	858	have_monotonic = 1;
694	}	859	}
695	#endif	860	#endif
696		861
697	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	863	mn_now = get_clock ();
699	now_floor = mn_now;	864	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
701		866
702	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		871
708	method = 0;	872	if (!(flags & 0x0000ffffUL))
709	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
710	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);
711	#endif	878	#endif
712	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	881	#endif
715	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	884	#endif
718	#if EV_USE_POLL	885	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	887	#endif
721	#if EV_USE_SELECT	888	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	890	#endif
724		891
725	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
727	}	894	}
728	}	895	}
729		896
730	void	897	static void
731	loop_destroy (EV_P)	898	loop_destroy (EV_P)
732	{	899	{
733	int i;	900	int i;
734		901
735	#if EV_USE_WIN32	902	#if EV_USE_PORT
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	904	#endif
738	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	907	#endif
741	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	910	#endif
744	#if EV_USE_POLL	911	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	913	#endif
747	#if EV_USE_SELECT	914	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	916	#endif
750		917
751	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	919	array_free (pending, [i]);
753		920
754	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
758	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	926	#endif
760	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
761		930
762	method = 0;	931	backend = 0;
763	}	932	}
764		933
765	static void	934	static void
766	loop_fork (EV_P)	935	loop_fork (EV_P)
767	{	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
768	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770	#endif
771	#if EV_USE_KQUEUE
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
773	#endif	945	#endif
774		946
775	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
776	{	948	{
777	/* default loop */	949	/* default loop */
…		…
790	postfork = 0;	962	postfork = 0;
791	}	963	}
792		964
793	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
794	struct ev_loop *	966	struct ev_loop *
795	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
796	{	968	{
797	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));
798		970
799	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
800		972
801	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
802		974
803	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
804	return loop;	976	return loop;
805		977
806	return 0;	978	return 0;
807	}	979	}
808		980
…		…
820	}	992	}
821		993
822	#endif	994	#endif
823		995
824	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
829	#else	999	#else
830	static int default_loop;
831
832	int	1000	int
		1001	ev_default_loop (unsigned int flags)
833	#endif	1002	#endif
834	ev_default_loop (int methods)
835	{	1003	{
836	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
838	return 0;	1006	return 0;
839		1007
840	if (!default_loop)	1008	if (!ev_default_loop_ptr)
841	{	1009	{
842	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	1012	#else
845	default_loop = 1;	1013	ev_default_loop_ptr = 1;
846	#endif	1014	#endif
847		1015
848	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
849		1017
850	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
851	{	1019	{
852	siginit (EV_A);	1020	siginit (EV_A);
853		1021
854	#ifndef WIN32	1022	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1027	#endif
860	}	1028	}
861	else	1029	else
862	default_loop = 0;	1030	ev_default_loop_ptr = 0;
863	}	1031	}
864		1032
865	return default_loop;	1033	return ev_default_loop_ptr;
866	}	1034	}
867		1035
868	void	1036	void
869	ev_default_destroy (void)	1037	ev_default_destroy (void)
870	{	1038	{
871	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1041	#endif
874		1042
875	#ifndef WIN32	1043	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
878	#endif	1046	#endif
879		1047
880	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
888		1056
889	void	1057	void
890	ev_default_fork (void)	1058	ev_default_fork (void)
891	{	1059	{
892	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1062	#endif
895		1063
896	if (method)	1064	if (backend)
897	postfork = 1;	1065	postfork = 1;
898	}	1066	}
899		1067
900	/*****************************************************************************/	1068	/*****************************************************************************/
901		1069
902	static int	1070	int inline_size
903	any_pending (EV_P)	1071	any_pending (EV_P)
904	{	1072	{
905	int pri;	1073	int pri;
906		1074
907	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
909	return 1;	1077	return 1;
910		1078
911	return 0;	1079	return 0;
912	}	1080	}
913		1081
914	static void	1082	void inline_speed
915	call_pending (EV_P)	1083	call_pending (EV_P)
916	{	1084	{
917	int pri;	1085	int pri;
918		1086
919	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
920	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
921	{	1089	{
922	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923		1091
924	if (p->w)	1092	if (expect_true (p->w))
925	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
926	p->w->pending = 0;	1096	p->w->pending = 0;
927	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
928	}	1098	}
929	}	1099	}
930	}	1100	}
931		1101
932	static void	1102	void inline_size
933	timers_reify (EV_P)	1103	timers_reify (EV_P)
934	{	1104	{
935	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
936	{	1106	{
937	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
938		1108
939	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
940		1110
941	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
942	if (w->repeat)	1112	if (w->repeat)
943	{	1113	{
944	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
945	((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
946	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
947	}	1121	}
948	else	1122	else
949	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950		1124
951	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952	}	1126	}
953	}	1127	}
954		1128
955	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
956	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
957	{	1132	{
958	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959	{	1134	{
960	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
961		1136
962	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
963		1138
964	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
965	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
966	{	1141	{
967	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);
968
969	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));
970	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
971	}	1145	}
972	else if (w->interval)	1146	else if (w->interval)
973	{	1147	{
974	((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;
975	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));
976	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
977	}	1151	}
978	else	1152	else
979	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
980		1154
981	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
982	}	1156	}
983	}	1157	}
984		1158
985	static void	1159	static void noinline
986	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
987	{	1161	{
988	int i;	1162	int i;
989		1163
990	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
991	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
992	{	1166	{
993	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
994		1168
995	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
996	((WT)w)->at = w->reschedule_cb (w, rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
997	else if (w->interval)	1171	else if (w->interval)
998	((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;
999	}	1173	}
1000		1174
1001	/* now rebuild the heap */	1175	/* now rebuild the heap */
1002	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1003	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1004	}	1178	}
		1179	#endif
1005		1180
1006	inline int	1181	int inline_size
1007	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1008	{	1183	{
1009	mn_now = get_clock ();	1184	mn_now = get_clock ();
1010		1185
1011	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1012	{	1187	{
1013	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1014	return 0;	1189	return 0;
1015	}	1190	}
1016	else	1191	else
1017	{	1192	{
1018	now_floor = mn_now;	1193	now_floor = mn_now;
1019	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1020	return 1;	1195	return 1;
1021	}	1196	}
1022	}	1197	}
1023		1198
1024	static void	1199	void inline_size
1025	time_update (EV_P)	1200	time_update (EV_P)
1026	{	1201	{
1027	int i;	1202	int i;
1028		1203
1029	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1031	{	1206	{
1032	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1033	{	1208	{
1034	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1035		1210
1036	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; )
1037	{	1220	{
1038	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1039		1222
1040	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1041	return; /* all is well */	1224	return; /* all is well */
1042		1225
1043	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1044	mn_now = get_clock ();	1227	mn_now = get_clock ();
1045	now_floor = mn_now;	1228	now_floor = mn_now;
1046	}	1229	}
1047		1230
		1231	# if EV_PERIODIC_ENABLE
1048	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1049	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1050	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1051	}	1236	}
1052	}	1237	}
1053	else	1238	else
1054	#endif	1239	#endif
1055	{	1240	{
1056	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1057		1242
1058	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))
1059	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1060	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1061		1248
1062	/* 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 */
1063	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1064	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1065	}	1252	}
1066		1253
1067	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1068	}	1255	}
1069	}	1256	}
1070		1257
1071	void	1258	void
1072	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1083	static int loop_done;	1270	static int loop_done;
1084		1271
1085	void	1272	void
1086	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1087	{	1274	{
1088	double block;
1089	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1090		1278
1091	do	1279	while (activecnt)
1092	{	1280	{
1093	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1094	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1095	{	1283	{
1096	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1103		1291
1104	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1105	fd_reify (EV_A);	1293	fd_reify (EV_A);
1106		1294
1107	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1108		1298
1109	/* we only need this for !monotonic clock or timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1110	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 */
1111	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1112	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1113	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1114	else	1307	else
1115	#endif	1308	#endif
1116	{	1309	{
1117	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1118	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1119	}	1312	}
1120		1313
1121	if (flags & EVLOOP_NONBLOCK || idlecnt)
1122	block = 0.;
1123	else
1124	{
1125	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1126		1315
1127	if (timercnt)	1316	if (timercnt)
1128	{	1317	{
1129	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1130	if (block > to) block = to;	1319	if (block > to) block = to;
1131	}	1320	}
1132		1321
		1322	#if EV_PERIODIC_ENABLE
1133	if (periodiccnt)	1323	if (periodiccnt)
1134	{	1324	{
1135	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1136	if (block > to) block = to;	1326	if (block > to) block = to;
1137	}	1327	}
		1328	#endif
1138		1329
1139	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1140	}	1331	}
1141		1332
1142	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1143		1335
1144	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1145	time_update (EV_A);	1337	time_update (EV_A);
1146		1338
1147	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1148	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1149	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1150		1344
1151	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1152	if (idlecnt && !any_pending (EV_A))	1346	if (idlecnt && !any_pending (EV_A))
1153	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1154		1348
1155	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1156	if (checkcnt)	1350	if (expect_false (checkcnt))
1157	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1158		1352
1159	call_pending (EV_A);	1353	call_pending (EV_A);
1160	}
1161	while (activecnt && !loop_done);
1162		1354
1163	if (loop_done != 2)	1355	if (expect_false (loop_done))
1164	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1165	}	1361	}
1166		1362
1167	void	1363	void
1168	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1169	{	1365	{
1170	loop_done = how;	1366	loop_done = how;
1171	}	1367	}
1172		1368
1173	/*****************************************************************************/	1369	/*****************************************************************************/
1174		1370
1175	inline void	1371	void inline_size
1176	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1177	{	1373	{
1178	elem->next = *head;	1374	elem->next = *head;
1179	*head = elem;	1375	*head = elem;
1180	}	1376	}
1181		1377
1182	inline void	1378	void inline_size
1183	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1184	{	1380	{
1185	while (*head)	1381	while (*head)
1186	{	1382	{
1187	if (*head == elem)	1383	if (*head == elem)
…		…
1192		1388
1193	head = &(*head)->next;	1389	head = &(*head)->next;
1194	}	1390	}
1195	}	1391	}
1196		1392
1197	inline void	1393	void inline_speed
1198	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1199	{	1395	{
1200	if (w->pending)	1396	if (w->pending)
1201	{	1397	{
1202	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1203	w->pending = 0;	1399	w->pending = 0;
1204	}	1400	}
1205	}	1401	}
1206		1402
1207	inline void	1403	void inline_speed
1208	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1209	{	1405	{
1210	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1211	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1212		1408
1213	w->active = active;	1409	w->active = active;
1214	ev_ref (EV_A);	1410	ev_ref (EV_A);
1215	}	1411	}
1216		1412
1217	inline void	1413	void inline_size
1218	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1219	{	1415	{
1220	ev_unref (EV_A);	1416	ev_unref (EV_A);
1221	w->active = 0;	1417	w->active = 0;
1222	}	1418	}
1223		1419
1224	/*****************************************************************************/	1420	/*****************************************************************************/
1225		1421
1226	void	1422	void
1227	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1228	{	1424	{
1229	int fd = w->fd;	1425	int fd = w->fd;
1230		1426
1231	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1232	return;	1428	return;
1233		1429
1234	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1235		1431
1236	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
…		…
1239		1435
1240	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1241	}	1437	}
1242		1438
1243	void	1439	void
1244	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1245	{	1441	{
1246	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1247	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1248	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1249		1447
1250	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1251	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1252		1450
1253	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1254	}	1452	}
1255		1453
1256	void	1454	void
1257	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1258	{	1456	{
1259	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1260	return;	1458	return;
1261		1459
1262	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1263		1461
1264	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.));
1265		1463
1266	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1267	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1268	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1269	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1270		1468
1271	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1272	}	1470	}
1273		1471
1274	void	1472	void
1275	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1276	{	1474	{
1277	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1279	return;	1477	return;
1280		1478
1281	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1282		1480
1283	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1284	{	1482	{
1285	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1286	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1287	}	1485	}
1288		1486
1289	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1290		1488
1291	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1292	}	1490	}
1293		1491
1294	void	1492	void
1295	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1296	{	1494	{
1297	if (ev_is_active (w))	1495	if (ev_is_active (w))
1298	{	1496	{
1299	if (w->repeat)	1497	if (w->repeat)
1300	{	1498	{
1301	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1302	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1303	}	1501	}
1304	else	1502	else
1305	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1306	}	1504	}
1307	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1308	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1309	}	1510	}
1310		1511
		1512	#if EV_PERIODIC_ENABLE
1311	void	1513	void
1312	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1313	{	1515	{
1314	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1315	return;	1517	return;
1316		1518
1317	if (w->reschedule_cb)	1519	if (w->reschedule_cb)
1318	((WT)w)->at = w->reschedule_cb (w, rt_now);	1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1319	else if (w->interval)	1521	else if (w->interval)
1320	{	1522	{
1321	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.));
1322	/* 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 */
1323	((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;
1324	}	1526	}
1325		1527
1326	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1327	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1328	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1329	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1330		1532
1331	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1332	}	1534	}
1333		1535
1334	void	1536	void
1335	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1336	{	1538	{
1337	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1338	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1339	return;	1541	return;
1340		1542
1341	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1342		1544
1343	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1344	{	1546	{
1345	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1346	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1347	}	1549	}
1348		1550
1349	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1350	}	1552	}
1351		1553
1352	void	1554	void
1353	ev_periodic_again (EV_P_ struct ev_periodic *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1354	{	1556	{
		1557	/* TODO: use adjustheap and recalculation */
1355	ev_periodic_stop (EV_A_ w);	1558	ev_periodic_stop (EV_A_ w);
1356	ev_periodic_start (EV_A_ w);	1559	ev_periodic_start (EV_A_ w);
1357	}	1560	}
		1561	#endif
1358		1562
1359	void	1563	void
1360	ev_idle_start (EV_P_ struct ev_idle *w)	1564	ev_idle_start (EV_P_ ev_idle *w)
1361	{	1565	{
1362	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1363	return;	1567	return;
1364		1568
1365	ev_start (EV_A_ (W)w, ++idlecnt);	1569	ev_start (EV_A_ (W)w, ++idlecnt);
1366	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1367	idles [idlecnt - 1] = w;	1571	idles [idlecnt - 1] = w;
1368	}	1572	}
1369		1573
1370	void	1574	void
1371	ev_idle_stop (EV_P_ struct ev_idle *w)	1575	ev_idle_stop (EV_P_ ev_idle *w)
1372	{	1576	{
1373	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1374	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1375	return;	1579	return;
1376		1580
		1581	{
		1582	int active = ((W)w)->active;
1377	idles [((W)w)->active - 1] = idles [--idlecnt];	1583	idles [active - 1] = idles [--idlecnt];
		1584	((W)idles [active - 1])->active = active;
		1585	}
		1586
1378	ev_stop (EV_A_ (W)w);	1587	ev_stop (EV_A_ (W)w);
1379	}	1588	}
1380		1589
1381	void	1590	void
1382	ev_prepare_start (EV_P_ struct ev_prepare *w)	1591	ev_prepare_start (EV_P_ ev_prepare *w)
1383	{	1592	{
1384	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1385	return;	1594	return;
1386		1595
1387	ev_start (EV_A_ (W)w, ++preparecnt);	1596	ev_start (EV_A_ (W)w, ++preparecnt);
1388	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1389	prepares [preparecnt - 1] = w;	1598	prepares [preparecnt - 1] = w;
1390	}	1599	}
1391		1600
1392	void	1601	void
1393	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1394	{	1603	{
1395	ev_clear_pending (EV_A_ (W)w);	1604	ev_clear_pending (EV_A_ (W)w);
1396	if (ev_is_active (w))	1605	if (expect_false (!ev_is_active (w)))
1397	return;	1606	return;
1398		1607
		1608	{
		1609	int active = ((W)w)->active;
1399	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1610	prepares [active - 1] = prepares [--preparecnt];
		1611	((W)prepares [active - 1])->active = active;
		1612	}
		1613
1400	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1401	}	1615	}
1402		1616
1403	void	1617	void
1404	ev_check_start (EV_P_ struct ev_check *w)	1618	ev_check_start (EV_P_ ev_check *w)
1405	{	1619	{
1406	if (ev_is_active (w))	1620	if (expect_false (ev_is_active (w)))
1407	return;	1621	return;
1408		1622
1409	ev_start (EV_A_ (W)w, ++checkcnt);	1623	ev_start (EV_A_ (W)w, ++checkcnt);
1410	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1411	checks [checkcnt - 1] = w;	1625	checks [checkcnt - 1] = w;
1412	}	1626	}
1413		1627
1414	void	1628	void
1415	ev_check_stop (EV_P_ struct ev_check *w)	1629	ev_check_stop (EV_P_ ev_check *w)
1416	{	1630	{
1417	ev_clear_pending (EV_A_ (W)w);	1631	ev_clear_pending (EV_A_ (W)w);
1418	if (ev_is_active (w))	1632	if (expect_false (!ev_is_active (w)))
1419	return;	1633	return;
1420		1634
		1635	{
		1636	int active = ((W)w)->active;
1421	checks [((W)w)->active - 1] = checks [--checkcnt];	1637	checks [active - 1] = checks [--checkcnt];
		1638	((W)checks [active - 1])->active = active;
		1639	}
		1640
1422	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1423	}	1642	}
1424		1643
1425	#ifndef SA_RESTART	1644	#ifndef SA_RESTART
1426	# define SA_RESTART 0	1645	# define SA_RESTART 0
1427	#endif	1646	#endif
1428		1647
1429	void	1648	void
1430	ev_signal_start (EV_P_ struct ev_signal *w)	1649	ev_signal_start (EV_P_ ev_signal *w)
1431	{	1650	{
1432	#if EV_MULTIPLICITY	1651	#if EV_MULTIPLICITY
1433	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));
1434	#endif	1653	#endif
1435	if (ev_is_active (w))	1654	if (expect_false (ev_is_active (w)))
1436	return;	1655	return;
1437		1656
1438	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));
1439		1658
1440	ev_start (EV_A_ (W)w, 1);	1659	ev_start (EV_A_ (W)w, 1);
1441	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1442	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1443		1662
1444	if (!((WL)w)->next)	1663	if (!((WL)w)->next)
1445	{	1664	{
1446	#if WIN32	1665	#if _WIN32
1447	signal (w->signum, sighandler);	1666	signal (w->signum, sighandler);
1448	#else	1667	#else
1449	struct sigaction sa;	1668	struct sigaction sa;
1450	sa.sa_handler = sighandler;	1669	sa.sa_handler = sighandler;
1451	sigfillset (&sa.sa_mask);	1670	sigfillset (&sa.sa_mask);
…		…
1454	#endif	1673	#endif
1455	}	1674	}
1456	}	1675	}
1457		1676
1458	void	1677	void
1459	ev_signal_stop (EV_P_ struct ev_signal *w)	1678	ev_signal_stop (EV_P_ ev_signal *w)
1460	{	1679	{
1461	ev_clear_pending (EV_A_ (W)w);	1680	ev_clear_pending (EV_A_ (W)w);
1462	if (!ev_is_active (w))	1681	if (expect_false (!ev_is_active (w)))
1463	return;	1682	return;
1464		1683
1465	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1466	ev_stop (EV_A_ (W)w);	1685	ev_stop (EV_A_ (W)w);
1467		1686
1468	if (!signals [w->signum - 1].head)	1687	if (!signals [w->signum - 1].head)
1469	signal (w->signum, SIG_DFL);	1688	signal (w->signum, SIG_DFL);
1470	}	1689	}
1471		1690
1472	void	1691	void
1473	ev_child_start (EV_P_ struct ev_child *w)	1692	ev_child_start (EV_P_ ev_child *w)
1474	{	1693	{
1475	#if EV_MULTIPLICITY	1694	#if EV_MULTIPLICITY
1476	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));
1477	#endif	1696	#endif
1478	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1479	return;	1698	return;
1480		1699
1481	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1482	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1483	}	1702	}
1484		1703
1485	void	1704	void
1486	ev_child_stop (EV_P_ struct ev_child *w)	1705	ev_child_stop (EV_P_ ev_child *w)
1487	{	1706	{
1488	ev_clear_pending (EV_A_ (W)w);	1707	ev_clear_pending (EV_A_ (W)w);
1489	if (ev_is_active (w))	1708	if (expect_false (!ev_is_active (w)))
1490	return;	1709	return;
1491		1710
1492	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1493	ev_stop (EV_A_ (W)w);	1712	ev_stop (EV_A_ (W)w);
1494	}	1713	}
1495		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
1496	/*****************************************************************************/	1831	/*****************************************************************************/
1497		1832
1498	struct ev_once	1833	struct ev_once
1499	{	1834	{
1500	struct ev_io io;	1835	ev_io io;
1501	struct ev_timer to;	1836	ev_timer to;
1502	void (*cb)(int revents, void *arg);	1837	void (*cb)(int revents, void *arg);
1503	void *arg;	1838	void *arg;
1504	};	1839	};
1505		1840
1506	static void	1841	static void
…		…
1515		1850
1516	cb (revents, arg);	1851	cb (revents, arg);
1517	}	1852	}
1518		1853
1519	static void	1854	static void
1520	once_cb_io (EV_P_ struct ev_io *w, int revents)	1855	once_cb_io (EV_P_ ev_io *w, int revents)
1521	{	1856	{
1522	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);
1523	}	1858	}
1524		1859
1525	static void	1860	static void
1526	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1861	once_cb_to (EV_P_ ev_timer *w, int revents)
1527	{	1862	{
1528	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);
1529	}	1864	}
1530		1865
1531	void	1866	void
1532	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)
1533	{	1868	{
1534	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1869	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1535		1870
1536	if (!once)	1871	if (expect_false (!once))
		1872	{
1537	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1873	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1538	else	1874	return;
1539	{	1875	}
		1876
1540	once->cb = cb;	1877	once->cb = cb;
1541	once->arg = arg;	1878	once->arg = arg;
1542		1879
1543	ev_watcher_init (&once->io, once_cb_io);	1880	ev_init (&once->io, once_cb_io);
1544	if (fd >= 0)	1881	if (fd >= 0)
1545	{	1882	{
1546	ev_io_set (&once->io, fd, events);	1883	ev_io_set (&once->io, fd, events);
1547	ev_io_start (EV_A_ &once->io);	1884	ev_io_start (EV_A_ &once->io);
1548	}	1885	}
1549		1886
1550	ev_watcher_init (&once->to, once_cb_to);	1887	ev_init (&once->to, once_cb_to);
1551	if (timeout >= 0.)	1888	if (timeout >= 0.)
1552	{	1889	{
1553	ev_timer_set (&once->to, timeout, 0.);	1890	ev_timer_set (&once->to, timeout, 0.);
1554	ev_timer_start (EV_A_ &once->to);	1891	ev_timer_start (EV_A_ &once->to);
1555	}
1556	}	1892	}
1557	}	1893	}
1558		1894
		1895	#ifdef __cplusplus
		1896	}
		1897	#endif
		1898

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