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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 1.141 by root, Mon Nov 26 20:33:58 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	#ifndef WCONTINUED
604	# define WCONTINUED 0	721	# define WCONTINUED 0
605	#endif	722	#endif
606		723
607	static void	724	void inline_speed
608	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
609	{	726	{
610	struct ev_child *w;	727	ev_child *w;
611		728
612	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	729	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
613	if (w->pid == pid || !w->pid)	730	if (w->pid == pid || !w->pid)
614	{	731	{
615	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	732	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616	w->rpid = pid;	733	w->rpid = pid;
617	w->rstatus = status;	734	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	736	}
620	}	737	}
621		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
627	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	744	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628	{	745	{
629	/* make sure we are called again until all childs have been reaped */	746	/* make sure we are called again until all childs have been reaped */
		747	/* we need to do it this way so that the callback gets called before we continue */
630	event (EV_A_ (W)sw, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		749
632	child_reap (EV_A_ sw, pid, pid, status);	750	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 */	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634	}	752	}
635	}	753	}
636		754
637	#endif	755	#endif
638		756
639	/*****************************************************************************/	757	/*****************************************************************************/
640		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
641	#if EV_USE_KQUEUE	762	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	763	# include "ev_kqueue.c"
643	#endif	764	#endif
644	#if EV_USE_EPOLL	765	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	766	# include "ev_epoll.c"
…		…
662	{	783	{
663	return EV_VERSION_MINOR;	784	return EV_VERSION_MINOR;
664	}	785	}
665		786
666	/* return true if we are running with elevated privileges and should ignore env variables */	787	/* return true if we are running with elevated privileges and should ignore env variables */
667	static int	788	int inline_size
668	enable_secure (void)	789	enable_secure (void)
669	{	790	{
670	#ifdef WIN32	791	#ifdef _WIN32
671	return 0;	792	return 0;
672	#else	793	#else
673	return getuid () != geteuid ()	794	return getuid () != geteuid ()
674	|| getgid () != getegid ();	795	|| getgid () != getegid ();
675	#endif	796	#endif
676	}	797	}
677		798
678	int	799	unsigned int
679	ev_method (EV_P)	800	ev_supported_backends (void)
680	{	801	{
681	return method;	802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	| EVBACKEND_KQUEUE
		836	| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
682	}	843	}
683		844
684	static void	845	static void
685	loop_init (EV_P_ int methods)	846	loop_init (EV_P_ unsigned int flags)
686	{	847	{
687	if (!method)	848	if (!backend)
688	{	849	{
689	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
690	{	851	{
691	struct timespec ts;	852	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	854	have_monotonic = 1;
694	}	855	}
695	#endif	856	#endif
696		857
697	rt_now = ev_time ();	858	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	859	mn_now = get_clock ();
699	now_floor = mn_now;	860	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	861	rtmn_diff = ev_rt_now - mn_now;
701		862
702	if (methods == EVMETHOD_AUTO)	863	if (!(flags & EVFLAG_NOENV)
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	866	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		867
708	method = 0;	868	if (!(flags & 0x0000ffffUL))
709	#if EV_USE_WIN32	869	flags |= ev_recommended_backends ();
710	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711	#endif	874	#endif
712	#if EV_USE_KQUEUE	875	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	877	#endif
715	#if EV_USE_EPOLL	878	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	880	#endif
718	#if EV_USE_POLL	881	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	883	#endif
721	#if EV_USE_SELECT	884	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	886	#endif
724		887
725	ev_watcher_init (&sigev, sigcb);	888	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	889	ev_set_priority (&sigev, EV_MAXPRI);
727	}	890	}
728	}	891	}
729		892
730	void	893	static void
731	loop_destroy (EV_P)	894	loop_destroy (EV_P)
732	{	895	{
733	int i;	896	int i;
734		897
735	#if EV_USE_WIN32	898	#if EV_USE_PORT
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	900	#endif
738	#if EV_USE_KQUEUE	901	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	903	#endif
741	#if EV_USE_EPOLL	904	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	906	#endif
744	#if EV_USE_POLL	907	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	909	#endif
747	#if EV_USE_SELECT	910	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	912	#endif
750		913
751	for (i = NUMPRI; i--; )	914	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	915	array_free (pending, [i]);
753		916
754	/* have to use the microsoft-never-gets-it-right macro */	917	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	918	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	919	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	920	#if EV_PERIODIC_ENABLE
758	array_free_microshit (idle);	921	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	922	#endif
760	array_free_microshit (check);	923	array_free (idle, EMPTY0);
		924	array_free (prepare, EMPTY0);
		925	array_free (check, EMPTY0);
761		926
762	method = 0;	927	backend = 0;
763	}	928	}
764		929
765	static void	930	static void
766	loop_fork (EV_P)	931	loop_fork (EV_P)
767	{	932	{
		933	#if EV_USE_PORT
		934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		935	#endif
		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
768	#if EV_USE_EPOLL	939	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	940	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	941	#endif
774		942
775	if (ev_is_active (&sigev))	943	if (ev_is_active (&sigev))
776	{	944	{
777	/* default loop */	945	/* default loop */
…		…
790	postfork = 0;	958	postfork = 0;
791	}	959	}
792		960
793	#if EV_MULTIPLICITY	961	#if EV_MULTIPLICITY
794	struct ev_loop *	962	struct ev_loop *
795	ev_loop_new (int methods)	963	ev_loop_new (unsigned int flags)
796	{	964	{
797	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	965	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798		966
799	memset (loop, 0, sizeof (struct ev_loop));	967	memset (loop, 0, sizeof (struct ev_loop));
800		968
801	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
802		970
803	if (ev_method (EV_A))	971	if (ev_backend (EV_A))
804	return loop;	972	return loop;
805		973
806	return 0;	974	return 0;
807	}	975	}
808		976
…		…
820	}	988	}
821		989
822	#endif	990	#endif
823		991
824	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
829	#else	995	#else
830	static int default_loop;
831
832	int	996	int
		997	ev_default_loop (unsigned int flags)
833	#endif	998	#endif
834	ev_default_loop (int methods)
835	{	999	{
836	if (sigpipe [0] == sigpipe [1])	1000	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	1001	if (pipe (sigpipe))
838	return 0;	1002	return 0;
839		1003
840	if (!default_loop)	1004	if (!ev_default_loop_ptr)
841	{	1005	{
842	#if EV_MULTIPLICITY	1006	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	1008	#else
845	default_loop = 1;	1009	ev_default_loop_ptr = 1;
846	#endif	1010	#endif
847		1011
848	loop_init (EV_A_ methods);	1012	loop_init (EV_A_ flags);
849		1013
850	if (ev_method (EV_A))	1014	if (ev_backend (EV_A))
851	{	1015	{
852	siginit (EV_A);	1016	siginit (EV_A);
853		1017
854	#ifndef WIN32	1018	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1019	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1020	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1021	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1023	#endif
860	}	1024	}
861	else	1025	else
862	default_loop = 0;	1026	ev_default_loop_ptr = 0;
863	}	1027	}
864		1028
865	return default_loop;	1029	return ev_default_loop_ptr;
866	}	1030	}
867		1031
868	void	1032	void
869	ev_default_destroy (void)	1033	ev_default_destroy (void)
870	{	1034	{
871	#if EV_MULTIPLICITY	1035	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1036	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1037	#endif
874		1038
875	#ifndef WIN32	1039	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1040	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1041	ev_signal_stop (EV_A_ &childev);
878	#endif	1042	#endif
879		1043
880	ev_ref (EV_A); /* signal watcher */	1044	ev_ref (EV_A); /* signal watcher */
…		…
888		1052
889	void	1053	void
890	ev_default_fork (void)	1054	ev_default_fork (void)
891	{	1055	{
892	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1057	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1058	#endif
895		1059
896	if (method)	1060	if (backend)
897	postfork = 1;	1061	postfork = 1;
898	}	1062	}
899		1063
900	/*****************************************************************************/	1064	/*****************************************************************************/
901		1065
902	static int	1066	int inline_size
903	any_pending (EV_P)	1067	any_pending (EV_P)
904	{	1068	{
905	int pri;	1069	int pri;
906		1070
907	for (pri = NUMPRI; pri--; )	1071	for (pri = NUMPRI; pri--; )
…		…
909	return 1;	1073	return 1;
910		1074
911	return 0;	1075	return 0;
912	}	1076	}
913		1077
914	static void	1078	void inline_speed
915	call_pending (EV_P)	1079	call_pending (EV_P)
916	{	1080	{
917	int pri;	1081	int pri;
918		1082
919	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
920	while (pendingcnt [pri])	1084	while (pendingcnt [pri])
921	{	1085	{
922	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923		1087
924	if (p->w)	1088	if (expect_true (p->w))
925	{	1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
926	p->w->pending = 0;	1092	p->w->pending = 0;
927	p->w->cb (EV_A_ p->w, p->events);	1093	EV_CB_INVOKE (p->w, p->events);
928	}	1094	}
929	}	1095	}
930	}	1096	}
931		1097
932	static void	1098	void inline_size
933	timers_reify (EV_P)	1099	timers_reify (EV_P)
934	{	1100	{
935	while (timercnt && ((WT)timers [0])->at <= mn_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
936	{	1102	{
937	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
938		1104
939	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
940		1106
941	/* first reschedule or stop timer */	1107	/* first reschedule or stop timer */
942	if (w->repeat)	1108	if (w->repeat)
943	{	1109	{
944	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1110	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1111
945	((WT)w)->at = mn_now + w->repeat;	1112	((WT)w)->at += w->repeat;
		1113	if (((WT)w)->at < mn_now)
		1114	((WT)w)->at = mn_now;
		1115
946	downheap ((WT *)timers, timercnt, 0);	1116	downheap ((WT *)timers, timercnt, 0);
947	}	1117	}
948	else	1118	else
949	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1119	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950		1120
951	event (EV_A_ (W)w, EV_TIMEOUT);	1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952	}	1122	}
953	}	1123	}
954		1124
955	static void	1125	#if EV_PERIODIC_ENABLE
		1126	void inline_size
956	periodics_reify (EV_P)	1127	periodics_reify (EV_P)
957	{	1128	{
958	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959	{	1130	{
960	struct ev_periodic *w = periodics [0];	1131	ev_periodic *w = periodics [0];
961		1132
962	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
963		1134
964	/* first reschedule or stop timer */	1135	/* first reschedule or stop timer */
965	if (w->reschedule_cb)	1136	if (w->reschedule_cb)
966	{	1137	{
967	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1138	((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));	1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
970	downheap ((WT *)periodics, periodiccnt, 0);	1140	downheap ((WT *)periodics, periodiccnt, 0);
971	}	1141	}
972	else if (w->interval)	1142	else if (w->interval)
973	{	1143	{
974	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1144	((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));	1145	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);	1146	downheap ((WT *)periodics, periodiccnt, 0);
977	}	1147	}
978	else	1148	else
979	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1149	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
980		1150
981	event (EV_A_ (W)w, EV_PERIODIC);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
982	}	1152	}
983	}	1153	}
984		1154
985	static void	1155	static void noinline
986	periodics_reschedule (EV_P)	1156	periodics_reschedule (EV_P)
987	{	1157	{
988	int i;	1158	int i;
989		1159
990	/* adjust periodics after time jump */	1160	/* adjust periodics after time jump */
991	for (i = 0; i < periodiccnt; ++i)	1161	for (i = 0; i < periodiccnt; ++i)
992	{	1162	{
993	struct ev_periodic *w = periodics [i];	1163	ev_periodic *w = periodics [i];
994		1164
995	if (w->reschedule_cb)	1165	if (w->reschedule_cb)
996	((WT)w)->at = w->reschedule_cb (w, rt_now);	1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
997	else if (w->interval)	1167	else if (w->interval)
998	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
999	}	1169	}
1000		1170
1001	/* now rebuild the heap */	1171	/* now rebuild the heap */
1002	for (i = periodiccnt >> 1; i--; )	1172	for (i = periodiccnt >> 1; i--; )
1003	downheap ((WT *)periodics, periodiccnt, i);	1173	downheap ((WT *)periodics, periodiccnt, i);
1004	}	1174	}
		1175	#endif
1005		1176
1006	inline int	1177	int inline_size
1007	time_update_monotonic (EV_P)	1178	time_update_monotonic (EV_P)
1008	{	1179	{
1009	mn_now = get_clock ();	1180	mn_now = get_clock ();
1010		1181
1011	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1012	{	1183	{
1013	rt_now = rtmn_diff + mn_now;	1184	ev_rt_now = rtmn_diff + mn_now;
1014	return 0;	1185	return 0;
1015	}	1186	}
1016	else	1187	else
1017	{	1188	{
1018	now_floor = mn_now;	1189	now_floor = mn_now;
1019	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
1020	return 1;	1191	return 1;
1021	}	1192	}
1022	}	1193	}
1023		1194
1024	static void	1195	void inline_size
1025	time_update (EV_P)	1196	time_update (EV_P)
1026	{	1197	{
1027	int i;	1198	int i;
1028		1199
1029	#if EV_USE_MONOTONIC	1200	#if EV_USE_MONOTONIC
…		…
1031	{	1202	{
1032	if (time_update_monotonic (EV_A))	1203	if (time_update_monotonic (EV_A))
1033	{	1204	{
1034	ev_tstamp odiff = rtmn_diff;	1205	ev_tstamp odiff = rtmn_diff;
1035		1206
1036	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
1037	{	1216	{
1038	rtmn_diff = rt_now - mn_now;	1217	rtmn_diff = ev_rt_now - mn_now;
1039		1218
1040	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1041	return; /* all is well */	1220	return; /* all is well */
1042		1221
1043	rt_now = ev_time ();	1222	ev_rt_now = ev_time ();
1044	mn_now = get_clock ();	1223	mn_now = get_clock ();
1045	now_floor = mn_now;	1224	now_floor = mn_now;
1046	}	1225	}
1047		1226
		1227	# if EV_PERIODIC_ENABLE
1048	periodics_reschedule (EV_A);	1228	periodics_reschedule (EV_A);
		1229	# endif
1049	/* no timer adjustment, as the monotonic clock doesn't jump */	1230	/* no timer adjustment, as the monotonic clock doesn't jump */
1050	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1051	}	1232	}
1052	}	1233	}
1053	else	1234	else
1054	#endif	1235	#endif
1055	{	1236	{
1056	rt_now = ev_time ();	1237	ev_rt_now = ev_time ();
1057		1238
1058	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1239	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1059	{	1240	{
		1241	#if EV_PERIODIC_ENABLE
1060	periodics_reschedule (EV_A);	1242	periodics_reschedule (EV_A);
		1243	#endif
1061		1244
1062	/* adjust timers. this is easy, as the offset is the same for all */	1245	/* adjust timers. this is easy, as the offset is the same for all */
1063	for (i = 0; i < timercnt; ++i)	1246	for (i = 0; i < timercnt; ++i)
1064	((WT)timers [i])->at += rt_now - mn_now;	1247	((WT)timers [i])->at += ev_rt_now - mn_now;
1065	}	1248	}
1066		1249
1067	mn_now = rt_now;	1250	mn_now = ev_rt_now;
1068	}	1251	}
1069	}	1252	}
1070		1253
1071	void	1254	void
1072	ev_ref (EV_P)	1255	ev_ref (EV_P)
…		…
1083	static int loop_done;	1266	static int loop_done;
1084		1267
1085	void	1268	void
1086	ev_loop (EV_P_ int flags)	1269	ev_loop (EV_P_ int flags)
1087	{	1270	{
1088	double block;
1089	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1271	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
1090		1274
1091	do	1275	while (activecnt)
1092	{	1276	{
1093	/* queue check watchers (and execute them) */	1277	/* queue check watchers (and execute them) */
1094	if (expect_false (preparecnt))	1278	if (expect_false (preparecnt))
1095	{	1279	{
1096	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1103		1287
1104	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
1105	fd_reify (EV_A);	1289	fd_reify (EV_A);
1106		1290
1107	/* calculate blocking time */	1291	/* calculate blocking time */
		1292	{
		1293	double block;
1108		1294
1109	/* we only need this for !monotonic clock or timers, but as we basically	1295	if (flags & EVLOOP_NONBLOCK || idlecnt)
1110	always have timers, we just calculate it always */	1296	block = 0.; /* do not block at all */
		1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
1111	#if EV_USE_MONOTONIC	1300	#if EV_USE_MONOTONIC
1112	if (expect_true (have_monotonic))	1301	if (expect_true (have_monotonic))
1113	time_update_monotonic (EV_A);	1302	time_update_monotonic (EV_A);
1114	else	1303	else
1115	#endif	1304	#endif
1116	{	1305	{
1117	rt_now = ev_time ();	1306	ev_rt_now = ev_time ();
1118	mn_now = rt_now;	1307	mn_now = ev_rt_now;
1119	}	1308	}
1120		1309
1121	if (flags & EVLOOP_NONBLOCK || idlecnt)
1122	block = 0.;
1123	else
1124	{
1125	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
1126		1311
1127	if (timercnt)	1312	if (timercnt)
1128	{	1313	{
1129	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1130	if (block > to) block = to;	1315	if (block > to) block = to;
1131	}	1316	}
1132		1317
		1318	#if EV_PERIODIC_ENABLE
1133	if (periodiccnt)	1319	if (periodiccnt)
1134	{	1320	{
1135	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1136	if (block > to) block = to;	1322	if (block > to) block = to;
1137	}	1323	}
		1324	#endif
1138		1325
1139	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
1140	}	1327	}
1141		1328
1142	method_poll (EV_A_ block);	1329	backend_poll (EV_A_ block);
		1330	}
1143		1331
1144	/* update rt_now, do magic */	1332	/* update ev_rt_now, do magic */
1145	time_update (EV_A);	1333	time_update (EV_A);
1146		1334
1147	/* queue pending timers and reschedule them */	1335	/* queue pending timers and reschedule them */
1148	timers_reify (EV_A); /* relative timers called last */	1336	timers_reify (EV_A); /* relative timers called last */
		1337	#if EV_PERIODIC_ENABLE
1149	periodics_reify (EV_A); /* absolute timers called first */	1338	periodics_reify (EV_A); /* absolute timers called first */
		1339	#endif
1150		1340
1151	/* queue idle watchers unless io or timers are pending */	1341	/* queue idle watchers unless other events are pending */
1152	if (idlecnt && !any_pending (EV_A))	1342	if (idlecnt && !any_pending (EV_A))
1153	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1154		1344
1155	/* queue check watchers, to be executed first */	1345	/* queue check watchers, to be executed first */
1156	if (checkcnt)	1346	if (expect_false (checkcnt))
1157	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1158		1348
1159	call_pending (EV_A);	1349	call_pending (EV_A);
1160	}
1161	while (activecnt && !loop_done);
1162		1350
1163	if (loop_done != 2)	1351	if (expect_false (loop_done))
1164	loop_done = 0;	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
1165	}	1357	}
1166		1358
1167	void	1359	void
1168	ev_unloop (EV_P_ int how)	1360	ev_unloop (EV_P_ int how)
1169	{	1361	{
1170	loop_done = how;	1362	loop_done = how;
1171	}	1363	}
1172		1364
1173	/*****************************************************************************/	1365	/*****************************************************************************/
1174		1366
1175	inline void	1367	void inline_size
1176	wlist_add (WL *head, WL elem)	1368	wlist_add (WL *head, WL elem)
1177	{	1369	{
1178	elem->next = *head;	1370	elem->next = *head;
1179	*head = elem;	1371	*head = elem;
1180	}	1372	}
1181		1373
1182	inline void	1374	void inline_size
1183	wlist_del (WL *head, WL elem)	1375	wlist_del (WL *head, WL elem)
1184	{	1376	{
1185	while (*head)	1377	while (*head)
1186	{	1378	{
1187	if (*head == elem)	1379	if (*head == elem)
…		…
1192		1384
1193	head = &(*head)->next;	1385	head = &(*head)->next;
1194	}	1386	}
1195	}	1387	}
1196		1388
1197	inline void	1389	void inline_speed
1198	ev_clear_pending (EV_P_ W w)	1390	ev_clear_pending (EV_P_ W w)
1199	{	1391	{
1200	if (w->pending)	1392	if (w->pending)
1201	{	1393	{
1202	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1203	w->pending = 0;	1395	w->pending = 0;
1204	}	1396	}
1205	}	1397	}
1206		1398
1207	inline void	1399	void inline_speed
1208	ev_start (EV_P_ W w, int active)	1400	ev_start (EV_P_ W w, int active)
1209	{	1401	{
1210	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1211	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1212		1404
1213	w->active = active;	1405	w->active = active;
1214	ev_ref (EV_A);	1406	ev_ref (EV_A);
1215	}	1407	}
1216		1408
1217	inline void	1409	void inline_size
1218	ev_stop (EV_P_ W w)	1410	ev_stop (EV_P_ W w)
1219	{	1411	{
1220	ev_unref (EV_A);	1412	ev_unref (EV_A);
1221	w->active = 0;	1413	w->active = 0;
1222	}	1414	}
1223		1415
1224	/*****************************************************************************/	1416	/*****************************************************************************/
1225		1417
1226	void	1418	void
1227	ev_io_start (EV_P_ struct ev_io *w)	1419	ev_io_start (EV_P_ ev_io *w)
1228	{	1420	{
1229	int fd = w->fd;	1421	int fd = w->fd;
1230		1422
1231	if (ev_is_active (w))	1423	if (expect_false (ev_is_active (w)))
1232	return;	1424	return;
1233		1425
1234	assert (("ev_io_start called with negative fd", fd >= 0));	1426	assert (("ev_io_start called with negative fd", fd >= 0));
1235		1427
1236	ev_start (EV_A_ (W)w, 1);	1428	ev_start (EV_A_ (W)w, 1);
…		…
1239		1431
1240	fd_change (EV_A_ fd);	1432	fd_change (EV_A_ fd);
1241	}	1433	}
1242		1434
1243	void	1435	void
1244	ev_io_stop (EV_P_ struct ev_io *w)	1436	ev_io_stop (EV_P_ ev_io *w)
1245	{	1437	{
1246	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
1247	if (!ev_is_active (w))	1439	if (expect_false (!ev_is_active (w)))
1248	return;	1440	return;
		1441
		1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1249		1443
1250	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1251	ev_stop (EV_A_ (W)w);	1445	ev_stop (EV_A_ (W)w);
1252		1446
1253	fd_change (EV_A_ w->fd);	1447	fd_change (EV_A_ w->fd);
1254	}	1448	}
1255		1449
1256	void	1450	void
1257	ev_timer_start (EV_P_ struct ev_timer *w)	1451	ev_timer_start (EV_P_ ev_timer *w)
1258	{	1452	{
1259	if (ev_is_active (w))	1453	if (expect_false (ev_is_active (w)))
1260	return;	1454	return;
1261		1455
1262	((WT)w)->at += mn_now;	1456	((WT)w)->at += mn_now;
1263		1457
1264	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1265		1459
1266	ev_start (EV_A_ (W)w, ++timercnt);	1460	ev_start (EV_A_ (W)w, ++timercnt);
1267	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1268	timers [timercnt - 1] = w;	1462	timers [timercnt - 1] = w;
1269	upheap ((WT *)timers, timercnt - 1);	1463	upheap ((WT *)timers, timercnt - 1);
1270		1464
1271	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1272	}	1466	}
1273		1467
1274	void	1468	void
1275	ev_timer_stop (EV_P_ struct ev_timer *w)	1469	ev_timer_stop (EV_P_ ev_timer *w)
1276	{	1470	{
1277	ev_clear_pending (EV_A_ (W)w);	1471	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))	1472	if (expect_false (!ev_is_active (w)))
1279	return;	1473	return;
1280		1474
1281	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1282		1476
1283	if (((W)w)->active < timercnt--)	1477	if (expect_true (((W)w)->active < timercnt--))
1284	{	1478	{
1285	timers [((W)w)->active - 1] = timers [timercnt];	1479	timers [((W)w)->active - 1] = timers [timercnt];
1286	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1287	}	1481	}
1288		1482
1289	((WT)w)->at = w->repeat;	1483	((WT)w)->at -= mn_now;
1290		1484
1291	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1292	}	1486	}
1293		1487
1294	void	1488	void
1295	ev_timer_again (EV_P_ struct ev_timer *w)	1489	ev_timer_again (EV_P_ ev_timer *w)
1296	{	1490	{
1297	if (ev_is_active (w))	1491	if (ev_is_active (w))
1298	{	1492	{
1299	if (w->repeat)	1493	if (w->repeat)
1300	{	1494	{
1301	((WT)w)->at = mn_now + w->repeat;	1495	((WT)w)->at = mn_now + w->repeat;
1302	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1303	}	1497	}
1304	else	1498	else
1305	ev_timer_stop (EV_A_ w);	1499	ev_timer_stop (EV_A_ w);
1306	}	1500	}
1307	else if (w->repeat)	1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
1308	ev_timer_start (EV_A_ w);	1504	ev_timer_start (EV_A_ w);
		1505	}
1309	}	1506	}
1310		1507
		1508	#if EV_PERIODIC_ENABLE
1311	void	1509	void
1312	ev_periodic_start (EV_P_ struct ev_periodic *w)	1510	ev_periodic_start (EV_P_ ev_periodic *w)
1313	{	1511	{
1314	if (ev_is_active (w))	1512	if (expect_false (ev_is_active (w)))
1315	return;	1513	return;
1316		1514
1317	if (w->reschedule_cb)	1515	if (w->reschedule_cb)
1318	((WT)w)->at = w->reschedule_cb (w, rt_now);	1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1319	else if (w->interval)	1517	else if (w->interval)
1320	{	1518	{
1321	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1519	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 */	1520	/* 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;	1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1324	}	1522	}
1325		1523
1326	ev_start (EV_A_ (W)w, ++periodiccnt);	1524	ev_start (EV_A_ (W)w, ++periodiccnt);
1327	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1328	periodics [periodiccnt - 1] = w;	1526	periodics [periodiccnt - 1] = w;
1329	upheap ((WT *)periodics, periodiccnt - 1);	1527	upheap ((WT *)periodics, periodiccnt - 1);
1330		1528
1331	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1332	}	1530	}
1333		1531
1334	void	1532	void
1335	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1533	ev_periodic_stop (EV_P_ ev_periodic *w)
1336	{	1534	{
1337	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1338	if (!ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1339	return;	1537	return;
1340		1538
1341	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1342		1540
1343	if (((W)w)->active < periodiccnt--)	1541	if (expect_true (((W)w)->active < periodiccnt--))
1344	{	1542	{
1345	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1346	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1347	}	1545	}
1348		1546
1349	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1350	}	1548	}
1351		1549
1352	void	1550	void
1353	ev_periodic_again (EV_P_ struct ev_periodic *w)	1551	ev_periodic_again (EV_P_ ev_periodic *w)
1354	{	1552	{
		1553	/* TODO: use adjustheap and recalculation */
1355	ev_periodic_stop (EV_A_ w);	1554	ev_periodic_stop (EV_A_ w);
1356	ev_periodic_start (EV_A_ w);	1555	ev_periodic_start (EV_A_ w);
1357	}	1556	}
		1557	#endif
1358		1558
1359	void	1559	void
1360	ev_idle_start (EV_P_ struct ev_idle *w)	1560	ev_idle_start (EV_P_ ev_idle *w)
1361	{	1561	{
1362	if (ev_is_active (w))	1562	if (expect_false (ev_is_active (w)))
1363	return;	1563	return;
1364		1564
1365	ev_start (EV_A_ (W)w, ++idlecnt);	1565	ev_start (EV_A_ (W)w, ++idlecnt);
1366	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1367	idles [idlecnt - 1] = w;	1567	idles [idlecnt - 1] = w;
1368	}	1568	}
1369		1569
1370	void	1570	void
1371	ev_idle_stop (EV_P_ struct ev_idle *w)	1571	ev_idle_stop (EV_P_ ev_idle *w)
1372	{	1572	{
1373	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1374	if (ev_is_active (w))	1574	if (expect_false (!ev_is_active (w)))
1375	return;	1575	return;
1376		1576
		1577	{
		1578	int active = ((W)w)->active;
1377	idles [((W)w)->active - 1] = idles [--idlecnt];	1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
1378	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1379	}	1584	}
1380		1585
1381	void	1586	void
1382	ev_prepare_start (EV_P_ struct ev_prepare *w)	1587	ev_prepare_start (EV_P_ ev_prepare *w)
1383	{	1588	{
1384	if (ev_is_active (w))	1589	if (expect_false (ev_is_active (w)))
1385	return;	1590	return;
1386		1591
1387	ev_start (EV_A_ (W)w, ++preparecnt);	1592	ev_start (EV_A_ (W)w, ++preparecnt);
1388	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1389	prepares [preparecnt - 1] = w;	1594	prepares [preparecnt - 1] = w;
1390	}	1595	}
1391		1596
1392	void	1597	void
1393	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1394	{	1599	{
1395	ev_clear_pending (EV_A_ (W)w);	1600	ev_clear_pending (EV_A_ (W)w);
1396	if (ev_is_active (w))	1601	if (expect_false (!ev_is_active (w)))
1397	return;	1602	return;
1398		1603
		1604	{
		1605	int active = ((W)w)->active;
1399	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
1400	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1401	}	1611	}
1402		1612
1403	void	1613	void
1404	ev_check_start (EV_P_ struct ev_check *w)	1614	ev_check_start (EV_P_ ev_check *w)
1405	{	1615	{
1406	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1407	return;	1617	return;
1408		1618
1409	ev_start (EV_A_ (W)w, ++checkcnt);	1619	ev_start (EV_A_ (W)w, ++checkcnt);
1410	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1411	checks [checkcnt - 1] = w;	1621	checks [checkcnt - 1] = w;
1412	}	1622	}
1413		1623
1414	void	1624	void
1415	ev_check_stop (EV_P_ struct ev_check *w)	1625	ev_check_stop (EV_P_ ev_check *w)
1416	{	1626	{
1417	ev_clear_pending (EV_A_ (W)w);	1627	ev_clear_pending (EV_A_ (W)w);
1418	if (ev_is_active (w))	1628	if (expect_false (!ev_is_active (w)))
1419	return;	1629	return;
1420		1630
		1631	{
		1632	int active = ((W)w)->active;
1421	checks [((W)w)->active - 1] = checks [--checkcnt];	1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
1422	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1423	}	1638	}
1424		1639
1425	#ifndef SA_RESTART	1640	#ifndef SA_RESTART
1426	# define SA_RESTART 0	1641	# define SA_RESTART 0
1427	#endif	1642	#endif
1428		1643
1429	void	1644	void
1430	ev_signal_start (EV_P_ struct ev_signal *w)	1645	ev_signal_start (EV_P_ ev_signal *w)
1431	{	1646	{
1432	#if EV_MULTIPLICITY	1647	#if EV_MULTIPLICITY
1433	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1434	#endif	1649	#endif
1435	if (ev_is_active (w))	1650	if (expect_false (ev_is_active (w)))
1436	return;	1651	return;
1437		1652
1438	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1439		1654
1440	ev_start (EV_A_ (W)w, 1);	1655	ev_start (EV_A_ (W)w, 1);
1441	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1442	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1443		1658
1444	if (!((WL)w)->next)	1659	if (!((WL)w)->next)
1445	{	1660	{
1446	#if WIN32	1661	#if _WIN32
1447	signal (w->signum, sighandler);	1662	signal (w->signum, sighandler);
1448	#else	1663	#else
1449	struct sigaction sa;	1664	struct sigaction sa;
1450	sa.sa_handler = sighandler;	1665	sa.sa_handler = sighandler;
1451	sigfillset (&sa.sa_mask);	1666	sigfillset (&sa.sa_mask);
…		…
1454	#endif	1669	#endif
1455	}	1670	}
1456	}	1671	}
1457		1672
1458	void	1673	void
1459	ev_signal_stop (EV_P_ struct ev_signal *w)	1674	ev_signal_stop (EV_P_ ev_signal *w)
1460	{	1675	{
1461	ev_clear_pending (EV_A_ (W)w);	1676	ev_clear_pending (EV_A_ (W)w);
1462	if (!ev_is_active (w))	1677	if (expect_false (!ev_is_active (w)))
1463	return;	1678	return;
1464		1679
1465	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1466	ev_stop (EV_A_ (W)w);	1681	ev_stop (EV_A_ (W)w);
1467		1682
1468	if (!signals [w->signum - 1].head)	1683	if (!signals [w->signum - 1].head)
1469	signal (w->signum, SIG_DFL);	1684	signal (w->signum, SIG_DFL);
1470	}	1685	}
1471		1686
1472	void	1687	void
1473	ev_child_start (EV_P_ struct ev_child *w)	1688	ev_child_start (EV_P_ ev_child *w)
1474	{	1689	{
1475	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1476	assert (("child watchers are only supported in the default loop", loop == default_loop));	1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1477	#endif	1692	#endif
1478	if (ev_is_active (w))	1693	if (expect_false (ev_is_active (w)))
1479	return;	1694	return;
1480		1695
1481	ev_start (EV_A_ (W)w, 1);	1696	ev_start (EV_A_ (W)w, 1);
1482	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1483	}	1698	}
1484		1699
1485	void	1700	void
1486	ev_child_stop (EV_P_ struct ev_child *w)	1701	ev_child_stop (EV_P_ ev_child *w)
1487	{	1702	{
1488	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1489	if (ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1490	return;	1705	return;
1491		1706
1492	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1493	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1494	}	1709	}
1495		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
		1718	static void
		1719	embed_cb (EV_P_ ev_io *io, int revents)
		1720	{
		1721	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
		1773	}
		1774
		1775	static void
		1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1777	{
		1778	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1779
		1780	/* we copy this here each the time so that */
		1781	/* prev has the old value when the callback gets invoked */
		1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
		1789	void
		1790	ev_stat_start (EV_P_ ev_stat *w)
		1791	{
		1792	if (expect_false (ev_is_active (w)))
		1793	return;
		1794
		1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
		1798
		1799	ev_stat_stat (EV_A_ w);
		1800
		1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1802	ev_set_priority (&w->timer, ev_priority (w));
		1803	ev_timer_start (EV_A_ &w->timer);
		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
		1808	void
		1809	ev_stat_stop (EV_P_ ev_stat *w)
		1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
		1812	if (expect_false (!ev_is_active (w)))
		1813	return;
		1814
		1815	ev_timer_stop (EV_A_ &w->timer);
		1816
		1817	ev_stop (EV_A_ (W)w);
		1818	}
		1819	#endif
		1820
1496	/*****************************************************************************/	1821	/*****************************************************************************/
1497		1822
1498	struct ev_once	1823	struct ev_once
1499	{	1824	{
1500	struct ev_io io;	1825	ev_io io;
1501	struct ev_timer to;	1826	ev_timer to;
1502	void (*cb)(int revents, void *arg);	1827	void (*cb)(int revents, void *arg);
1503	void *arg;	1828	void *arg;
1504	};	1829	};
1505		1830
1506	static void	1831	static void
…		…
1515		1840
1516	cb (revents, arg);	1841	cb (revents, arg);
1517	}	1842	}
1518		1843
1519	static void	1844	static void
1520	once_cb_io (EV_P_ struct ev_io *w, int revents)	1845	once_cb_io (EV_P_ ev_io *w, int revents)
1521	{	1846	{
1522	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1847	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1523	}	1848	}
1524		1849
1525	static void	1850	static void
1526	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
1527	{	1852	{
1528	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1853	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1529	}	1854	}
1530		1855
1531	void	1856	void
1532	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1533	{	1858	{
1534	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1859	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1535		1860
1536	if (!once)	1861	if (expect_false (!once))
		1862	{
1537	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1863	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1538	else	1864	return;
1539	{	1865	}
		1866
1540	once->cb = cb;	1867	once->cb = cb;
1541	once->arg = arg;	1868	once->arg = arg;
1542		1869
1543	ev_watcher_init (&once->io, once_cb_io);	1870	ev_init (&once->io, once_cb_io);
1544	if (fd >= 0)	1871	if (fd >= 0)
1545	{	1872	{
1546	ev_io_set (&once->io, fd, events);	1873	ev_io_set (&once->io, fd, events);
1547	ev_io_start (EV_A_ &once->io);	1874	ev_io_start (EV_A_ &once->io);
1548	}	1875	}
1549		1876
1550	ev_watcher_init (&once->to, once_cb_to);	1877	ev_init (&once->to, once_cb_to);
1551	if (timeout >= 0.)	1878	if (timeout >= 0.)
1552	{	1879	{
1553	ev_timer_set (&once->to, timeout, 0.);	1880	ev_timer_set (&once->to, timeout, 0.);
1554	ev_timer_start (EV_A_ &once->to);	1881	ev_timer_start (EV_A_ &once->to);
1555	}
1556	}	1882	}
1557	}	1883	}
1558		1884
		1885	#ifdef __cplusplus
		1886	}
		1887	#endif
		1888

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