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Comparing libev/ev.c (file contents):
Revision 1.74 by root, Tue Nov 6 16:51:20 2007 UTC vs.
Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
135	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
136	#else	200	#else
137	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
138	# define inline static	203	# define inline_size static
		204	# define noinline
139	#endif	205	#endif
140		206
141	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
143		209
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
147	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
150		219
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		221
		222	#ifdef _WIN32
153	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
154		225
155	/*****************************************************************************/	226	/*****************************************************************************/
156		227
157	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
158		229
		230	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	232	{
161	syserr_cb = cb;	233	syserr_cb = cb;
162	}	234	}
163		235
164	static void	236	static void noinline
165	syserr (const char *msg)	237	syserr (const char *msg)
166	{	238	{
167	if (!msg)	239	if (!msg)
168	msg = "(libev) system error";	240	msg = "(libev) system error";
169		241
…		…
176	}	248	}
177	}	249	}
178		250
179	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
180		252
		253	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	255	{
183	alloc = cb;	256	alloc = cb;
184	}	257	}
185		258
186	static void *	259	static void *
…		…
205	typedef struct	278	typedef struct
206	{	279	{
207	WL head;	280	WL head;
208	unsigned char events;	281	unsigned char events;
209	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
210	} ANFD;	286	} ANFD;
211		287
212	typedef struct	288	typedef struct
213	{	289	{
214	W w;	290	W w;
215	int events;	291	int events;
216	} ANPENDING;	292	} ANPENDING;
217		293
218	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
219		295
220	struct ev_loop	296	struct ev_loop
221	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	301	#include "ev_vars.h"
224	};
225	# undef VAR	302	#undef VAR
		303	};
226	# include "ev_wrap.h"	304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
227		308
228	#else	309	#else
229		310
		311	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	313	#include "ev_vars.h"
232	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
233		317
234	#endif	318	#endif
235		319
236	/*****************************************************************************/	320	/*****************************************************************************/
237		321
238	inline ev_tstamp	322	ev_tstamp
239	ev_time (void)	323	ev_time (void)
240	{	324	{
241	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
242	struct timespec ts;	326	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	333	#endif
250	}	334	}
251		335
252	inline ev_tstamp	336	ev_tstamp inline_size
253	get_clock (void)	337	get_clock (void)
254	{	338	{
255	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
257	{	341	{
…		…
262	#endif	346	#endif
263		347
264	return ev_time ();	348	return ev_time ();
265	}	349	}
266		350
		351	#if EV_MULTIPLICITY
267	ev_tstamp	352	ev_tstamp
268	ev_now (EV_P)	353	ev_now (EV_P)
269	{	354	{
270	return rt_now;	355	return ev_rt_now;
271	}	356	}
		357	#endif
272		358
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		360
275	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
277	{ \	363	{ \
278	int newcnt = cur; \	364	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	382	}
297		383
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		386
306	/*****************************************************************************/	387	/*****************************************************************************/
307		388
308	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
309	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
310	{	419	{
311	while (count--)	420	while (count--)
312	{	421	{
313	base->head = 0;	422	base->head = 0;
…		…
316		425
317	++base;	426	++base;
318	}	427	}
319	}	428	}
320		429
321	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
…		…
546	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
547	errno = old_errno;	652	errno = old_errno;
548	}	653	}
549	}	654	}
550		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
551	static void	676	static void
552	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
553	{	678	{
554	WL w;
555	int signum;	679	int signum;
556		680
557	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
558	gotsig = 0;	682	gotsig = 0;
559		683
560	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
561	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
562	{	686	ev_feed_signal_event (EV_A_ signum + 1);
563	signals [signum].gotsig = 0;
564
565	for (w = signals [signum].head; w; w = w->next)
566	event (EV_A_ (W)w, EV_SIGNAL);
567	}
568	}	687	}
569		688
570	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
571	siginit (EV_P)	702	siginit (EV_P)
572	{	703	{
573	#ifndef WIN32	704	fd_intern (sigpipe [0]);
574	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
575	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
576
577	/* rather than sort out wether we really need nb, set it */
578	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
579	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
580	#endif
581		706
582	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
583	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
584	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
585	}	710	}
586		711
587	/*****************************************************************************/	712	/*****************************************************************************/
588		713
589	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
590		715
591	#ifndef WIN32	716	#ifndef _WIN32
592		717
593	static struct ev_signal childev;	718	static ev_signal childev;
594		719
595	#ifndef WCONTINUED	720	void inline_speed
596	# define WCONTINUED 0
597	#endif
598
599	static void
600	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)
601	{	722	{
602	struct ev_child *w;	723	ev_child *w;
603		724
604	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)
605	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
606	{	727	{
607	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
608	w->rpid = pid;	729	w->rpid = pid;
609	w->rstatus = status;	730	w->rstatus = status;
610	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
611	}	732	}
612	}	733	}
613		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
614	static void	739	static void
615	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
616	{	741	{
617	int pid, status;	742	int pid, status;
618		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
619	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
620	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
621	/* 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 */
622	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
623		754
624	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
625	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 */
626	}
627	}	757	}
628		758
629	#endif	759	#endif
630		760
631	/*****************************************************************************/	761	/*****************************************************************************/
632		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
633	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
634	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
635	#endif	768	#endif
636	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
637	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
654	{	787	{
655	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
656	}	789	}
657		790
658	/* 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 */
659	static int	792	int inline_size
660	enable_secure (void)	793	enable_secure (void)
661	{	794	{
662	#ifdef WIN32	795	#ifdef _WIN32
663	return 0;	796	return 0;
664	#else	797	#else
665	return getuid () != geteuid ()	798	return getuid () != geteuid ()
666	|| getgid () != getegid ();	799	|| getgid () != getegid ();
667	#endif	800	#endif
668	}	801	}
669		802
670	int	803	unsigned int
671	ev_method (EV_P)	804	ev_supported_backends (void)
672	{	805	{
673	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;
674	}	847	}
675		848
676	static void	849	static void
677	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
678	{	851	{
679	if (!method)	852	if (!backend)
680	{	853	{
681	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
682	{	855	{
683	struct timespec ts;	856	struct timespec ts;
684	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
685	have_monotonic = 1;	858	have_monotonic = 1;
686	}	859	}
687	#endif	860	#endif
688		861
689	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
690	mn_now = get_clock ();	863	mn_now = get_clock ();
691	now_floor = mn_now;	864	now_floor = mn_now;
692	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
693		866
694	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
695	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
696	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
697	else
698	methods = EVMETHOD_ANY;
699		871
700	method = 0;	872	if (!(flags & 0x0000ffffUL))
701	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
702	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);
703	#endif	878	#endif
704	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
705	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
706	#endif	881	#endif
707	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
708	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
709	#endif	884	#endif
710	#if EV_USE_POLL	885	#if EV_USE_POLL
711	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
712	#endif	887	#endif
713	#if EV_USE_SELECT	888	#if EV_USE_SELECT
714	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
715	#endif	890	#endif
716		891
717	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
719	}	894	}
720	}	895	}
721		896
722	void	897	static void
723	loop_destroy (EV_P)	898	loop_destroy (EV_P)
724	{	899	{
725	int i;	900	int i;
726		901
727	#if EV_USE_WIN32	902	#if EV_USE_PORT
728	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
729	#endif	904	#endif
730	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
731	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
732	#endif	907	#endif
733	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
734	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
735	#endif	910	#endif
736	#if EV_USE_POLL	911	#if EV_USE_POLL
737	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
738	#endif	913	#endif
739	#if EV_USE_SELECT	914	#if EV_USE_SELECT
740	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
741	#endif	916	#endif
742		917
743	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
744	array_free (pending, [i]);	919	array_free (pending, [i]);
745		920
746	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
747	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
748	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
749	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
750	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
751	array_free_microshit (prepare);	926	#endif
752	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
753		930
754	method = 0;	931	backend = 0;
755	}	932	}
756		933
757	static void	934	static void
758	loop_fork (EV_P)	935	loop_fork (EV_P)
759	{	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
760	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
761	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
762	#endif
763	#if EV_USE_KQUEUE
764	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
765	#endif	945	#endif
766		946
767	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
768	{	948	{
769	/* default loop */	949	/* default loop */
…		…
782	postfork = 0;	962	postfork = 0;
783	}	963	}
784		964
785	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
786	struct ev_loop *	966	struct ev_loop *
787	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
788	{	968	{
789	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));
790		970
791	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
792		972
793	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
794		974
795	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
796	return loop;	976	return loop;
797		977
798	return 0;	978	return 0;
799	}	979	}
800		980
…		…
812	}	992	}
813		993
814	#endif	994	#endif
815		995
816	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
817	struct ev_loop default_loop_struct;
818	static struct ev_loop *default_loop;
819
820	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
821	#else	999	#else
822	static int default_loop;
823
824	int	1000	int
		1001	ev_default_loop (unsigned int flags)
825	#endif	1002	#endif
826	ev_default_loop (int methods)
827	{	1003	{
828	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
829	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
830	return 0;	1006	return 0;
831		1007
832	if (!default_loop)	1008	if (!ev_default_loop_ptr)
833	{	1009	{
834	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
835	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
836	#else	1012	#else
837	default_loop = 1;	1013	ev_default_loop_ptr = 1;
838	#endif	1014	#endif
839		1015
840	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
841		1017
842	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
843	{	1019	{
844	siginit (EV_A);	1020	siginit (EV_A);
845		1021
846	#ifndef WIN32	1022	#ifndef _WIN32
847	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
848	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
849	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
850	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
851	#endif	1027	#endif
852	}	1028	}
853	else	1029	else
854	default_loop = 0;	1030	ev_default_loop_ptr = 0;
855	}	1031	}
856		1032
857	return default_loop;	1033	return ev_default_loop_ptr;
858	}	1034	}
859		1035
860	void	1036	void
861	ev_default_destroy (void)	1037	ev_default_destroy (void)
862	{	1038	{
863	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
865	#endif	1041	#endif
866		1042
867	#ifndef WIN32	1043	#ifndef _WIN32
868	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
869	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
870	#endif	1046	#endif
871		1047
872	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
880		1056
881	void	1057	void
882	ev_default_fork (void)	1058	ev_default_fork (void)
883	{	1059	{
884	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
886	#endif	1062	#endif
887		1063
888	if (method)	1064	if (backend)
889	postfork = 1;	1065	postfork = 1;
890	}	1066	}
891		1067
892	/*****************************************************************************/	1068	/*****************************************************************************/
893		1069
894	static void	1070	int inline_size
		1071	any_pending (EV_P)
		1072	{
		1073	int pri;
		1074
		1075	for (pri = NUMPRI; pri--; )
		1076	if (pendingcnt [pri])
		1077	return 1;
		1078
		1079	return 0;
		1080	}
		1081
		1082	void inline_speed
895	call_pending (EV_P)	1083	call_pending (EV_P)
896	{	1084	{
897	int pri;	1085	int pri;
898		1086
899	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
900	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
901	{	1089	{
902	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
903		1091
904	if (p->w)	1092	if (expect_true (p->w))
905	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
906	p->w->pending = 0;	1096	p->w->pending = 0;
907	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
908	}	1098	}
909	}	1099	}
910	}	1100	}
911		1101
912	static void	1102	void inline_size
913	timers_reify (EV_P)	1103	timers_reify (EV_P)
914	{	1104	{
915	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
916	{	1106	{
917	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
918		1108
919	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
920		1110
921	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
922	if (w->repeat)	1112	if (w->repeat)
923	{	1113	{
924	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
925	((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
926	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
927	}	1121	}
928	else	1122	else
929	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
930		1124
931	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
932	}	1126	}
933	}	1127	}
934		1128
935	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
936	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
937	{	1132	{
938	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
939	{	1134	{
940	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
941		1136
942	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
943		1138
944	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
945	if (w->interval)	1140	if (w->reschedule_cb)
946	{	1141	{
		1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1144	downheap ((WT *)periodics, periodiccnt, 0);
		1145	}
		1146	else if (w->interval)
		1147	{
947	((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;
948	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));
949	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
950	}	1151	}
951	else	1152	else
952	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
953		1154
954	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
955	}	1156	}
956	}	1157	}
957		1158
958	static void	1159	static void noinline
959	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
960	{	1161	{
961	int i;	1162	int i;
962		1163
963	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
964	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
965	{	1166	{
966	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
967		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
968	if (w->interval)	1171	else if (w->interval)
969	{
970	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
971
972	if (fabs (diff) >= 1e-4)
973	{
974	ev_periodic_stop (EV_A_ w);
975	ev_periodic_start (EV_A_ w);
976
977	i = 0; /* restart loop, inefficient, but time jumps should be rare */
978	}
979	}
980	}	1173	}
981	}
982		1174
983	inline int	1175	/* now rebuild the heap */
		1176	for (i = periodiccnt >> 1; i--; )
		1177	downheap ((WT *)periodics, periodiccnt, i);
		1178	}
		1179	#endif
		1180
		1181	int inline_size
984	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
985	{	1183	{
986	mn_now = get_clock ();	1184	mn_now = get_clock ();
987		1185
988	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
989	{	1187	{
990	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
991	return 0;	1189	return 0;
992	}	1190	}
993	else	1191	else
994	{	1192	{
995	now_floor = mn_now;	1193	now_floor = mn_now;
996	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
997	return 1;	1195	return 1;
998	}	1196	}
999	}	1197	}
1000		1198
1001	static void	1199	void inline_size
1002	time_update (EV_P)	1200	time_update (EV_P)
1003	{	1201	{
1004	int i;	1202	int i;
1005		1203
1006	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1008	{	1206	{
1009	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1010	{	1208	{
1011	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1012		1210
1013	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; )
1014	{	1220	{
1015	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1016		1222
1017	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1018	return; /* all is well */	1224	return; /* all is well */
1019		1225
1020	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1021	mn_now = get_clock ();	1227	mn_now = get_clock ();
1022	now_floor = mn_now;	1228	now_floor = mn_now;
1023	}	1229	}
1024		1230
		1231	# if EV_PERIODIC_ENABLE
1025	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1026	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1027	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1028	}	1236	}
1029	}	1237	}
1030	else	1238	else
1031	#endif	1239	#endif
1032	{	1240	{
1033	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1034		1242
1035	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))
1036	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1037	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1038		1248
1039	/* 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 */
1040	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1041	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1042	}	1252	}
1043		1253
1044	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1045	}	1255	}
1046	}	1256	}
1047		1257
1048	void	1258	void
1049	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1060	static int loop_done;	1270	static int loop_done;
1061		1271
1062	void	1272	void
1063	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1064	{	1274	{
1065	double block;
1066	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1067		1278
1068	do	1279	while (activecnt)
1069	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	if (expect_false (postfork))
		1283	if (forkcnt)
		1284	{
		1285	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1286	call_pending (EV_A);
		1287	}
		1288
1070	/* queue check watchers (and execute them) */	1289	/* queue check watchers (and execute them) */
1071	if (expect_false (preparecnt))	1290	if (expect_false (preparecnt))
1072	{	1291	{
1073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1074	call_pending (EV_A);	1293	call_pending (EV_A);
…		…
1080		1299
1081	/* update fd-related kernel structures */	1300	/* update fd-related kernel structures */
1082	fd_reify (EV_A);	1301	fd_reify (EV_A);
1083		1302
1084	/* calculate blocking time */	1303	/* calculate blocking time */
		1304	{
		1305	double block;
1085		1306
1086	/* we only need this for !monotonic clockor timers, but as we basically	1307	if (flags & EVLOOP_NONBLOCK || idlecnt)
1087	always have timers, we just calculate it always */	1308	block = 0.; /* do not block at all */
		1309	else
		1310	{
		1311	/* update time to cancel out callback processing overhead */
1088	#if EV_USE_MONOTONIC	1312	#if EV_USE_MONOTONIC
1089	if (expect_true (have_monotonic))	1313	if (expect_true (have_monotonic))
1090	time_update_monotonic (EV_A);	1314	time_update_monotonic (EV_A);
1091	else	1315	else
1092	#endif	1316	#endif
1093	{	1317	{
1094	rt_now = ev_time ();	1318	ev_rt_now = ev_time ();
1095	mn_now = rt_now;	1319	mn_now = ev_rt_now;
1096	}	1320	}
1097		1321
1098	if (flags & EVLOOP_NONBLOCK || idlecnt)
1099	block = 0.;
1100	else
1101	{
1102	block = MAX_BLOCKTIME;	1322	block = MAX_BLOCKTIME;
1103		1323
1104	if (timercnt)	1324	if (timercnt)
1105	{	1325	{
1106	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1326	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1107	if (block > to) block = to;	1327	if (block > to) block = to;
1108	}	1328	}
1109		1329
		1330	#if EV_PERIODIC_ENABLE
1110	if (periodiccnt)	1331	if (periodiccnt)
1111	{	1332	{
1112	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1333	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1113	if (block > to) block = to;	1334	if (block > to) block = to;
1114	}	1335	}
		1336	#endif
1115		1337
1116	if (block < 0.) block = 0.;	1338	if (expect_false (block < 0.)) block = 0.;
1117	}	1339	}
1118		1340
1119	method_poll (EV_A_ block);	1341	backend_poll (EV_A_ block);
		1342	}
1120		1343
1121	/* update rt_now, do magic */	1344	/* update ev_rt_now, do magic */
1122	time_update (EV_A);	1345	time_update (EV_A);
1123		1346
1124	/* queue pending timers and reschedule them */	1347	/* queue pending timers and reschedule them */
1125	timers_reify (EV_A); /* relative timers called last */	1348	timers_reify (EV_A); /* relative timers called last */
		1349	#if EV_PERIODIC_ENABLE
1126	periodics_reify (EV_A); /* absolute timers called first */	1350	periodics_reify (EV_A); /* absolute timers called first */
		1351	#endif
1127		1352
1128	/* queue idle watchers unless io or timers are pending */	1353	/* queue idle watchers unless other events are pending */
1129	if (!pendingcnt)	1354	if (idlecnt && !any_pending (EV_A))
1130	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1131		1356
1132	/* queue check watchers, to be executed first */	1357	/* queue check watchers, to be executed first */
1133	if (checkcnt)	1358	if (expect_false (checkcnt))
1134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1135		1360
1136	call_pending (EV_A);	1361	call_pending (EV_A);
1137	}
1138	while (activecnt && !loop_done);
1139		1362
1140	if (loop_done != 2)	1363	if (expect_false (loop_done))
1141	loop_done = 0;	1364	break;
		1365	}
		1366
		1367	if (loop_done == EVUNLOOP_ONE)
		1368	loop_done = EVUNLOOP_CANCEL;
1142	}	1369	}
1143		1370
1144	void	1371	void
1145	ev_unloop (EV_P_ int how)	1372	ev_unloop (EV_P_ int how)
1146	{	1373	{
1147	loop_done = how;	1374	loop_done = how;
1148	}	1375	}
1149		1376
1150	/*****************************************************************************/	1377	/*****************************************************************************/
1151		1378
1152	inline void	1379	void inline_size
1153	wlist_add (WL *head, WL elem)	1380	wlist_add (WL *head, WL elem)
1154	{	1381	{
1155	elem->next = *head;	1382	elem->next = *head;
1156	*head = elem;	1383	*head = elem;
1157	}	1384	}
1158		1385
1159	inline void	1386	void inline_size
1160	wlist_del (WL *head, WL elem)	1387	wlist_del (WL *head, WL elem)
1161	{	1388	{
1162	while (*head)	1389	while (*head)
1163	{	1390	{
1164	if (*head == elem)	1391	if (*head == elem)
…		…
1169		1396
1170	head = &(*head)->next;	1397	head = &(*head)->next;
1171	}	1398	}
1172	}	1399	}
1173		1400
1174	inline void	1401	void inline_speed
1175	ev_clear_pending (EV_P_ W w)	1402	ev_clear_pending (EV_P_ W w)
1176	{	1403	{
1177	if (w->pending)	1404	if (w->pending)
1178	{	1405	{
1179	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1180	w->pending = 0;	1407	w->pending = 0;
1181	}	1408	}
1182	}	1409	}
1183		1410
1184	inline void	1411	void inline_speed
1185	ev_start (EV_P_ W w, int active)	1412	ev_start (EV_P_ W w, int active)
1186	{	1413	{
1187	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1188	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1189		1416
1190	w->active = active;	1417	w->active = active;
1191	ev_ref (EV_A);	1418	ev_ref (EV_A);
1192	}	1419	}
1193		1420
1194	inline void	1421	void inline_size
1195	ev_stop (EV_P_ W w)	1422	ev_stop (EV_P_ W w)
1196	{	1423	{
1197	ev_unref (EV_A);	1424	ev_unref (EV_A);
1198	w->active = 0;	1425	w->active = 0;
1199	}	1426	}
1200		1427
1201	/*****************************************************************************/	1428	/*****************************************************************************/
1202		1429
1203	void	1430	void
1204	ev_io_start (EV_P_ struct ev_io *w)	1431	ev_io_start (EV_P_ ev_io *w)
1205	{	1432	{
1206	int fd = w->fd;	1433	int fd = w->fd;
1207		1434
1208	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1209	return;	1436	return;
1210		1437
1211	assert (("ev_io_start called with negative fd", fd >= 0));	1438	assert (("ev_io_start called with negative fd", fd >= 0));
1212		1439
1213	ev_start (EV_A_ (W)w, 1);	1440	ev_start (EV_A_ (W)w, 1);
…		…
1216		1443
1217	fd_change (EV_A_ fd);	1444	fd_change (EV_A_ fd);
1218	}	1445	}
1219		1446
1220	void	1447	void
1221	ev_io_stop (EV_P_ struct ev_io *w)	1448	ev_io_stop (EV_P_ ev_io *w)
1222	{	1449	{
1223	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1224	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1225	return;	1452	return;
		1453
		1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1226		1455
1227	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1456	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1228	ev_stop (EV_A_ (W)w);	1457	ev_stop (EV_A_ (W)w);
1229		1458
1230	fd_change (EV_A_ w->fd);	1459	fd_change (EV_A_ w->fd);
1231	}	1460	}
1232		1461
1233	void	1462	void
1234	ev_timer_start (EV_P_ struct ev_timer *w)	1463	ev_timer_start (EV_P_ ev_timer *w)
1235	{	1464	{
1236	if (ev_is_active (w))	1465	if (expect_false (ev_is_active (w)))
1237	return;	1466	return;
1238		1467
1239	((WT)w)->at += mn_now;	1468	((WT)w)->at += mn_now;
1240		1469
1241	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1470	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1242		1471
1243	ev_start (EV_A_ (W)w, ++timercnt);	1472	ev_start (EV_A_ (W)w, ++timercnt);
1244	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1245	timers [timercnt - 1] = w;	1474	timers [timercnt - 1] = w;
1246	upheap ((WT *)timers, timercnt - 1);	1475	upheap ((WT *)timers, timercnt - 1);
1247		1476
1248	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1249	}	1478	}
1250		1479
1251	void	1480	void
1252	ev_timer_stop (EV_P_ struct ev_timer *w)	1481	ev_timer_stop (EV_P_ ev_timer *w)
1253	{	1482	{
1254	ev_clear_pending (EV_A_ (W)w);	1483	ev_clear_pending (EV_A_ (W)w);
1255	if (!ev_is_active (w))	1484	if (expect_false (!ev_is_active (w)))
1256	return;	1485	return;
1257		1486
1258	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1259		1488
1260	if (((W)w)->active < timercnt--)	1489	if (expect_true (((W)w)->active < timercnt--))
1261	{	1490	{
1262	timers [((W)w)->active - 1] = timers [timercnt];	1491	timers [((W)w)->active - 1] = timers [timercnt];
1263	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1264	}	1493	}
1265		1494
1266	((WT)w)->at = w->repeat;	1495	((WT)w)->at -= mn_now;
1267		1496
1268	ev_stop (EV_A_ (W)w);	1497	ev_stop (EV_A_ (W)w);
1269	}	1498	}
1270		1499
1271	void	1500	void
1272	ev_timer_again (EV_P_ struct ev_timer *w)	1501	ev_timer_again (EV_P_ ev_timer *w)
1273	{	1502	{
1274	if (ev_is_active (w))	1503	if (ev_is_active (w))
1275	{	1504	{
1276	if (w->repeat)	1505	if (w->repeat)
1277	{	1506	{
1278	((WT)w)->at = mn_now + w->repeat;	1507	((WT)w)->at = mn_now + w->repeat;
1279	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1280	}	1509	}
1281	else	1510	else
1282	ev_timer_stop (EV_A_ w);	1511	ev_timer_stop (EV_A_ w);
1283	}	1512	}
1284	else if (w->repeat)	1513	else if (w->repeat)
		1514	{
		1515	w->at = w->repeat;
1285	ev_timer_start (EV_A_ w);	1516	ev_timer_start (EV_A_ w);
		1517	}
1286	}	1518	}
1287		1519
		1520	#if EV_PERIODIC_ENABLE
1288	void	1521	void
1289	ev_periodic_start (EV_P_ struct ev_periodic *w)	1522	ev_periodic_start (EV_P_ ev_periodic *w)
1290	{	1523	{
1291	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1292	return;	1525	return;
1293		1526
		1527	if (w->reschedule_cb)
		1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1529	else if (w->interval)
		1530	{
1294	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1531	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1295
1296	/* this formula differs from the one in periodic_reify because we do not always round up */	1532	/* this formula differs from the one in periodic_reify because we do not always round up */
1297	if (w->interval)
1298	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1533	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1534	}
1299		1535
1300	ev_start (EV_A_ (W)w, ++periodiccnt);	1536	ev_start (EV_A_ (W)w, ++periodiccnt);
1301	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1302	periodics [periodiccnt - 1] = w;	1538	periodics [periodiccnt - 1] = w;
1303	upheap ((WT *)periodics, periodiccnt - 1);	1539	upheap ((WT *)periodics, periodiccnt - 1);
1304		1540
1305	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1306	}	1542	}
1307		1543
1308	void	1544	void
1309	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1545	ev_periodic_stop (EV_P_ ev_periodic *w)
1310	{	1546	{
1311	ev_clear_pending (EV_A_ (W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1548	if (expect_false (!ev_is_active (w)))
1313	return;	1549	return;
1314		1550
1315	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1316		1552
1317	if (((W)w)->active < periodiccnt--)	1553	if (expect_true (((W)w)->active < periodiccnt--))
1318	{	1554	{
1319	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1320	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1321	}	1557	}
1322		1558
1323	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1324	}	1560	}
1325		1561
1326	void	1562	void
1327	ev_idle_start (EV_P_ struct ev_idle *w)	1563	ev_periodic_again (EV_P_ ev_periodic *w)
1328	{	1564	{
1329	if (ev_is_active (w))	1565	/* TODO: use adjustheap and recalculation */
1330	return;
1331
1332	ev_start (EV_A_ (W)w, ++idlecnt);
1333	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1334	idles [idlecnt - 1] = w;
1335	}
1336
1337	void
1338	ev_idle_stop (EV_P_ struct ev_idle *w)
1339	{
1340	ev_clear_pending (EV_A_ (W)w);
1341	if (ev_is_active (w))
1342	return;
1343
1344	idles [((W)w)->active - 1] = idles [--idlecnt];
1345	ev_stop (EV_A_ (W)w);	1566	ev_periodic_stop (EV_A_ w);
		1567	ev_periodic_start (EV_A_ w);
1346	}	1568	}
1347		1569	#endif
1348	void
1349	ev_prepare_start (EV_P_ struct ev_prepare *w)
1350	{
1351	if (ev_is_active (w))
1352	return;
1353
1354	ev_start (EV_A_ (W)w, ++preparecnt);
1355	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1356	prepares [preparecnt - 1] = w;
1357	}
1358
1359	void
1360	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1361	{
1362	ev_clear_pending (EV_A_ (W)w);
1363	if (ev_is_active (w))
1364	return;
1365
1366	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1367	ev_stop (EV_A_ (W)w);
1368	}
1369
1370	void
1371	ev_check_start (EV_P_ struct ev_check *w)
1372	{
1373	if (ev_is_active (w))
1374	return;
1375
1376	ev_start (EV_A_ (W)w, ++checkcnt);
1377	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1378	checks [checkcnt - 1] = w;
1379	}
1380
1381	void
1382	ev_check_stop (EV_P_ struct ev_check *w)
1383	{
1384	ev_clear_pending (EV_A_ (W)w);
1385	if (ev_is_active (w))
1386	return;
1387
1388	checks [((W)w)->active - 1] = checks [--checkcnt];
1389	ev_stop (EV_A_ (W)w);
1390	}
1391		1570
1392	#ifndef SA_RESTART	1571	#ifndef SA_RESTART
1393	# define SA_RESTART 0	1572	# define SA_RESTART 0
1394	#endif	1573	#endif
1395		1574
1396	void	1575	void
1397	ev_signal_start (EV_P_ struct ev_signal *w)	1576	ev_signal_start (EV_P_ ev_signal *w)
1398	{	1577	{
1399	#if EV_MULTIPLICITY	1578	#if EV_MULTIPLICITY
1400	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1579	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1401	#endif	1580	#endif
1402	if (ev_is_active (w))	1581	if (expect_false (ev_is_active (w)))
1403	return;	1582	return;
1404		1583
1405	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1584	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1406		1585
1407	ev_start (EV_A_ (W)w, 1);	1586	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1587	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1409	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1588	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1410		1589
1411	if (!((WL)w)->next)	1590	if (!((WL)w)->next)
1412	{	1591	{
1413	#if WIN32	1592	#if _WIN32
1414	signal (w->signum, sighandler);	1593	signal (w->signum, sighandler);
1415	#else	1594	#else
1416	struct sigaction sa;	1595	struct sigaction sa;
1417	sa.sa_handler = sighandler;	1596	sa.sa_handler = sighandler;
1418	sigfillset (&sa.sa_mask);	1597	sigfillset (&sa.sa_mask);
…		…
1421	#endif	1600	#endif
1422	}	1601	}
1423	}	1602	}
1424		1603
1425	void	1604	void
1426	ev_signal_stop (EV_P_ struct ev_signal *w)	1605	ev_signal_stop (EV_P_ ev_signal *w)
1427	{	1606	{
1428	ev_clear_pending (EV_A_ (W)w);	1607	ev_clear_pending (EV_A_ (W)w);
1429	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1430	return;	1609	return;
1431		1610
1432	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1433	ev_stop (EV_A_ (W)w);	1612	ev_stop (EV_A_ (W)w);
1434		1613
1435	if (!signals [w->signum - 1].head)	1614	if (!signals [w->signum - 1].head)
1436	signal (w->signum, SIG_DFL);	1615	signal (w->signum, SIG_DFL);
1437	}	1616	}
1438		1617
1439	void	1618	void
1440	ev_child_start (EV_P_ struct ev_child *w)	1619	ev_child_start (EV_P_ ev_child *w)
1441	{	1620	{
1442	#if EV_MULTIPLICITY	1621	#if EV_MULTIPLICITY
1443	assert (("child watchers are only supported in the default loop", loop == default_loop));	1622	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1444	#endif	1623	#endif
1445	if (ev_is_active (w))	1624	if (expect_false (ev_is_active (w)))
1446	return;	1625	return;
1447		1626
1448	ev_start (EV_A_ (W)w, 1);	1627	ev_start (EV_A_ (W)w, 1);
1449	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1450	}	1629	}
1451		1630
1452	void	1631	void
1453	ev_child_stop (EV_P_ struct ev_child *w)	1632	ev_child_stop (EV_P_ ev_child *w)
1454	{	1633	{
1455	ev_clear_pending (EV_A_ (W)w);	1634	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1457	return;	1636	return;
1458		1637
1459	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1460	ev_stop (EV_A_ (W)w);	1639	ev_stop (EV_A_ (W)w);
1461	}	1640	}
1462		1641
		1642	#if EV_STAT_ENABLE
		1643
		1644	# ifdef _WIN32
		1645	# undef lstat
		1646	# define lstat(a,b) _stati64 (a,b)
		1647	# endif
		1648
		1649	#define DEF_STAT_INTERVAL 5.0074891
		1650	#define MIN_STAT_INTERVAL 0.1074891
		1651
		1652	void
		1653	ev_stat_stat (EV_P_ ev_stat *w)
		1654	{
		1655	if (lstat (w->path, &w->attr) < 0)
		1656	w->attr.st_nlink = 0;
		1657	else if (!w->attr.st_nlink)
		1658	w->attr.st_nlink = 1;
		1659	}
		1660
		1661	static void
		1662	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1663	{
		1664	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1665
		1666	/* we copy this here each the time so that */
		1667	/* prev has the old value when the callback gets invoked */
		1668	w->prev = w->attr;
		1669	ev_stat_stat (EV_A_ w);
		1670
		1671	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1672	ev_feed_event (EV_A_ w, EV_STAT);
		1673	}
		1674
		1675	void
		1676	ev_stat_start (EV_P_ ev_stat *w)
		1677	{
		1678	if (expect_false (ev_is_active (w)))
		1679	return;
		1680
		1681	/* since we use memcmp, we need to clear any padding data etc. */
		1682	memset (&w->prev, 0, sizeof (ev_statdata));
		1683	memset (&w->attr, 0, sizeof (ev_statdata));
		1684
		1685	ev_stat_stat (EV_A_ w);
		1686
		1687	if (w->interval < MIN_STAT_INTERVAL)
		1688	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1689
		1690	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1691	ev_set_priority (&w->timer, ev_priority (w));
		1692	ev_timer_start (EV_A_ &w->timer);
		1693
		1694	ev_start (EV_A_ (W)w, 1);
		1695	}
		1696
		1697	void
		1698	ev_stat_stop (EV_P_ ev_stat *w)
		1699	{
		1700	ev_clear_pending (EV_A_ (W)w);
		1701	if (expect_false (!ev_is_active (w)))
		1702	return;
		1703
		1704	ev_timer_stop (EV_A_ &w->timer);
		1705
		1706	ev_stop (EV_A_ (W)w);
		1707	}
		1708	#endif
		1709
		1710	void
		1711	ev_idle_start (EV_P_ ev_idle *w)
		1712	{
		1713	if (expect_false (ev_is_active (w)))
		1714	return;
		1715
		1716	ev_start (EV_A_ (W)w, ++idlecnt);
		1717	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1718	idles [idlecnt - 1] = w;
		1719	}
		1720
		1721	void
		1722	ev_idle_stop (EV_P_ ev_idle *w)
		1723	{
		1724	ev_clear_pending (EV_A_ (W)w);
		1725	if (expect_false (!ev_is_active (w)))
		1726	return;
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730	idles [active - 1] = idles [--idlecnt];
		1731	((W)idles [active - 1])->active = active;
		1732	}
		1733
		1734	ev_stop (EV_A_ (W)w);
		1735	}
		1736
		1737	void
		1738	ev_prepare_start (EV_P_ ev_prepare *w)
		1739	{
		1740	if (expect_false (ev_is_active (w)))
		1741	return;
		1742
		1743	ev_start (EV_A_ (W)w, ++preparecnt);
		1744	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1745	prepares [preparecnt - 1] = w;
		1746	}
		1747
		1748	void
		1749	ev_prepare_stop (EV_P_ ev_prepare *w)
		1750	{
		1751	ev_clear_pending (EV_A_ (W)w);
		1752	if (expect_false (!ev_is_active (w)))
		1753	return;
		1754
		1755	{
		1756	int active = ((W)w)->active;
		1757	prepares [active - 1] = prepares [--preparecnt];
		1758	((W)prepares [active - 1])->active = active;
		1759	}
		1760
		1761	ev_stop (EV_A_ (W)w);
		1762	}
		1763
		1764	void
		1765	ev_check_start (EV_P_ ev_check *w)
		1766	{
		1767	if (expect_false (ev_is_active (w)))
		1768	return;
		1769
		1770	ev_start (EV_A_ (W)w, ++checkcnt);
		1771	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1772	checks [checkcnt - 1] = w;
		1773	}
		1774
		1775	void
		1776	ev_check_stop (EV_P_ ev_check *w)
		1777	{
		1778	ev_clear_pending (EV_A_ (W)w);
		1779	if (expect_false (!ev_is_active (w)))
		1780	return;
		1781
		1782	{
		1783	int active = ((W)w)->active;
		1784	checks [active - 1] = checks [--checkcnt];
		1785	((W)checks [active - 1])->active = active;
		1786	}
		1787
		1788	ev_stop (EV_A_ (W)w);
		1789	}
		1790
		1791	#if EV_EMBED_ENABLE
		1792	void noinline
		1793	ev_embed_sweep (EV_P_ ev_embed *w)
		1794	{
		1795	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1796	}
		1797
		1798	static void
		1799	embed_cb (EV_P_ ev_io *io, int revents)
		1800	{
		1801	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1802
		1803	if (ev_cb (w))
		1804	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1805	else
		1806	ev_embed_sweep (loop, w);
		1807	}
		1808
		1809	void
		1810	ev_embed_start (EV_P_ ev_embed *w)
		1811	{
		1812	if (expect_false (ev_is_active (w)))
		1813	return;
		1814
		1815	{
		1816	struct ev_loop *loop = w->loop;
		1817	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1818	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1819	}
		1820
		1821	ev_set_priority (&w->io, ev_priority (w));
		1822	ev_io_start (EV_A_ &w->io);
		1823
		1824	ev_start (EV_A_ (W)w, 1);
		1825	}
		1826
		1827	void
		1828	ev_embed_stop (EV_P_ ev_embed *w)
		1829	{
		1830	ev_clear_pending (EV_A_ (W)w);
		1831	if (expect_false (!ev_is_active (w)))
		1832	return;
		1833
		1834	ev_io_stop (EV_A_ &w->io);
		1835
		1836	ev_stop (EV_A_ (W)w);
		1837	}
		1838	#endif
		1839
		1840	#if EV_FORK_ENABLE
		1841	void
		1842	ev_fork_start (EV_P_ ev_fork *w)
		1843	{
		1844	if (expect_false (ev_is_active (w)))
		1845	return;
		1846
		1847	ev_start (EV_A_ (W)w, ++forkcnt);
		1848	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1849	forks [forkcnt - 1] = w;
		1850	}
		1851
		1852	void
		1853	ev_fork_stop (EV_P_ ev_fork *w)
		1854	{
		1855	ev_clear_pending (EV_A_ (W)w);
		1856	if (expect_false (!ev_is_active (w)))
		1857	return;
		1858
		1859	{
		1860	int active = ((W)w)->active;
		1861	forks [active - 1] = forks [--forkcnt];
		1862	((W)forks [active - 1])->active = active;
		1863	}
		1864
		1865	ev_stop (EV_A_ (W)w);
		1866	}
		1867	#endif
		1868
1463	/*****************************************************************************/	1869	/*****************************************************************************/
1464		1870
1465	struct ev_once	1871	struct ev_once
1466	{	1872	{
1467	struct ev_io io;	1873	ev_io io;
1468	struct ev_timer to;	1874	ev_timer to;
1469	void (*cb)(int revents, void *arg);	1875	void (*cb)(int revents, void *arg);
1470	void *arg;	1876	void *arg;
1471	};	1877	};
1472		1878
1473	static void	1879	static void
…		…
1482		1888
1483	cb (revents, arg);	1889	cb (revents, arg);
1484	}	1890	}
1485		1891
1486	static void	1892	static void
1487	once_cb_io (EV_P_ struct ev_io *w, int revents)	1893	once_cb_io (EV_P_ ev_io *w, int revents)
1488	{	1894	{
1489	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1895	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1490	}	1896	}
1491		1897
1492	static void	1898	static void
1493	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1899	once_cb_to (EV_P_ ev_timer *w, int revents)
1494	{	1900	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1901	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1496	}	1902	}
1497		1903
1498	void	1904	void
1499	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1905	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1500	{	1906	{
1501	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1907	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1502		1908
1503	if (!once)	1909	if (expect_false (!once))
		1910	{
1504	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1911	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1505	else	1912	return;
1506	{	1913	}
		1914
1507	once->cb = cb;	1915	once->cb = cb;
1508	once->arg = arg;	1916	once->arg = arg;
1509		1917
1510	ev_watcher_init (&once->io, once_cb_io);	1918	ev_init (&once->io, once_cb_io);
1511	if (fd >= 0)	1919	if (fd >= 0)
1512	{	1920	{
1513	ev_io_set (&once->io, fd, events);	1921	ev_io_set (&once->io, fd, events);
1514	ev_io_start (EV_A_ &once->io);	1922	ev_io_start (EV_A_ &once->io);
1515	}	1923	}
1516		1924
1517	ev_watcher_init (&once->to, once_cb_to);	1925	ev_init (&once->to, once_cb_to);
1518	if (timeout >= 0.)	1926	if (timeout >= 0.)
1519	{	1927	{
1520	ev_timer_set (&once->to, timeout, 0.);	1928	ev_timer_set (&once->to, timeout, 0.);
1521	ev_timer_start (EV_A_ &once->to);	1929	ev_timer_start (EV_A_ &once->to);
1522	}
1523	}	1930	}
1524	}	1931	}
1525		1932
		1933	#ifdef __cplusplus
		1934	}
		1935	#endif
		1936

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