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Comparing libev/ev.c (file contents):
Revision 1.78 by root, Thu Nov 8 21:08:56 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	void	430	void inline_speed
322	ev_feed_event (EV_P_ void *w, int revents)
323	{
324	W w_ = (W)w;
325
326	if (w_->pending)
327	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;
330	}
331
332	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}
337
338	static void
339	queue_events (EV_P_ W *events, int eventcnt, int type)
340	{
341	int i;
342
343	for (i = 0; i < eventcnt; ++i)
344	ev_feed_event (EV_A_ events [i], type);
345	}
346
347	static void
348	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
349	{	432	{
350	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	434	ev_io *w;
352		435
353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
354	{	437	{
355	int ev = w->events & events;	438	int ev = w->events & revents;
356		439
357	if (ev)	440	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
359	}	442	}
360	}	443	}
361		444
362	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
363		450
364	static void	451	void inline_size
365	fd_reify (EV_P)	452	fd_reify (EV_P)
366	{	453	{
367	int i;	454	int i;
368		455
369	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
370	{	457	{
371	int fd = fdchanges [i];	458	int fd = fdchanges [i];
372	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
373	struct ev_io *w;	460	ev_io *w;
374		461
375	int events = 0;	462	int events = 0;
376		463
377	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)
378	events |= w->events;	465	events |= w->events;
379		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
380	anfd->reify = 0;	476	anfd->reify = 0;
381		477
382	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
383	anfd->events = events;	479	anfd->events = events;
384	}	480	}
385		481
386	fdchangecnt = 0;	482	fdchangecnt = 0;
387	}	483	}
388		484
389	static void	485	void inline_size
390	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
391	{	487	{
392	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
393	return;	489	return;
394		490
395	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
396		492
397	++fdchangecnt;	493	++fdchangecnt;
398	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
399	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
400	}	496	}
401		497
402	static void	498	void inline_speed
403	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
404	{	500	{
405	struct ev_io *w;	501	ev_io *w;
406		502
407	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
408	{	504	{
409	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
410	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
411	}	507	}
412	}	508	}
413		509
414	static int	510	int inline_size
415	fd_valid (int fd)	511	fd_valid (int fd)
416	{	512	{
417	#ifdef WIN32	513	#ifdef _WIN32
418	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
419	#else	515	#else
420	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
421	#endif	517	#endif
422	}	518	}
423		519
424	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
425	static void	521	static void noinline
426	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
427	{	523	{
428	int fd;	524	int fd;
429		525
430	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
432	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
433	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
434	}	530	}
435		531
436	/* 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 */
437	static void	533	static void noinline
438	fd_enomem (EV_P)	534	fd_enomem (EV_P)
439	{	535	{
440	int fd;	536	int fd;
441		537
442	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
445	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
446	return;	542	return;
447	}	543	}
448	}	544	}
449		545
450	/* 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 */
451	static void	547	static void noinline
452	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
453	{	549	{
454	int fd;	550	int fd;
455		551
456	/* 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 */
…		…
462	}	558	}
463	}	559	}
464		560
465	/*****************************************************************************/	561	/*****************************************************************************/
466		562
467	static void	563	void inline_speed
468	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
469	{	565	{
470	WT w = heap [k];	566	WT w = heap [k];
471		567
472	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
479	heap [k] = w;	575	heap [k] = w;
480	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
481		577
482	}	578	}
483		579
484	static void	580	void inline_speed
485	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
486	{	582	{
487	WT w = heap [k];	583	WT w = heap [k];
488		584
489	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
503		599
504	heap [k] = w;	600	heap [k] = w;
505	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
506	}	602	}
507		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
508	/*****************************************************************************/	611	/*****************************************************************************/
509		612
510	typedef struct	613	typedef struct
511	{	614	{
512	WL head;	615	WL head;
…		…
516	static ANSIG *signals;	619	static ANSIG *signals;
517	static int signalmax;	620	static int signalmax;
518		621
519	static int sigpipe [2];	622	static int sigpipe [2];
520	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
521	static struct ev_io sigev;	624	static ev_io sigev;
522		625
523	static void	626	void inline_size
524	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
525	{	628	{
526	while (count--)	629	while (count--)
527	{	630	{
528	base->head = 0;	631	base->head = 0;
…		…
533	}	636	}
534		637
535	static void	638	static void
536	sighandler (int signum)	639	sighandler (int signum)
537	{	640	{
538	#if WIN32	641	#if _WIN32
539	signal (signum, sighandler);	642	signal (signum, sighandler);
540	#endif	643	#endif
541		644
542	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
543		646
544	if (!gotsig)	647	if (!gotsig)
545	{	648	{
546	int old_errno = errno;	649	int old_errno = errno;
547	gotsig = 1;	650	gotsig = 1;
548	#ifdef WIN32
549	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
550	#else
551	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
552	#endif
553	errno = old_errno;	652	errno = old_errno;
554	}	653	}
555	}	654	}
556		655
		656	void noinline
		657	ev_feed_signal_event (EV_P_ int signum)
		658	{
		659	WL w;
		660
		661	#if EV_MULTIPLICITY
		662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		663	#endif
		664
		665	--signum;
		666
		667	if (signum < 0 || signum >= signalmax)
		668	return;
		669
		670	signals [signum].gotsig = 0;
		671
		672	for (w = signals [signum].head; w; w = w->next)
		673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		674	}
		675
557	static void	676	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
559	{	678	{
560	WL w;
561	int signum;	679	int signum;
562		680
563	#ifdef WIN32
564	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
565	#else
566	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
567	#endif
568	gotsig = 0;	682	gotsig = 0;
569		683
570	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
571	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
572	{	686	ev_feed_signal_event (EV_A_ signum + 1);
573	signals [signum].gotsig = 0;
574
575	for (w = signals [signum].head; w; w = w->next)
576	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
577	}
578	}	687	}
579		688
580	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
581	siginit (EV_P)	702	siginit (EV_P)
582	{	703	{
583	#ifndef WIN32	704	fd_intern (sigpipe [0]);
584	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
585	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
586
587	/* rather than sort out wether we really need nb, set it */
588	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
589	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
590	#endif
591		706
592	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
593	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
594	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
595	}	710	}
596		711
597	/*****************************************************************************/	712	/*****************************************************************************/
598		713
599	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
600		715
601	#ifndef WIN32	716	#ifndef _WIN32
602		717
603	static struct ev_signal childev;	718	static ev_signal childev;
604		719
605	#ifndef WCONTINUED	720	void inline_speed
606	# define WCONTINUED 0
607	#endif
608
609	static void
610	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)
611	{	722	{
612	struct ev_child *w;	723	ev_child *w;
613		724
614	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)
615	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
616	{	727	{
617	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
618	w->rpid = pid;	729	w->rpid = pid;
619	w->rstatus = status;	730	w->rstatus = status;
620	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
621	}	732	}
622	}	733	}
623		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
624	static void	739	static void
625	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
626	{	741	{
627	int pid, status;	742	int pid, status;
628		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
629	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
630	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
631	/* 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 */
632	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
633		754
634	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
635	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 */
636	}
637	}	757	}
638		758
639	#endif	759	#endif
640		760
641	/*****************************************************************************/	761	/*****************************************************************************/
642		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
643	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
644	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
645	#endif	768	#endif
646	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
647	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
664	{	787	{
665	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
666	}	789	}
667		790
668	/* 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 */
669	static int	792	int inline_size
670	enable_secure (void)	793	enable_secure (void)
671	{	794	{
672	#ifdef WIN32	795	#ifdef _WIN32
673	return 0;	796	return 0;
674	#else	797	#else
675	return getuid () != geteuid ()	798	return getuid () != geteuid ()
676	|| getgid () != getegid ();	799	|| getgid () != getegid ();
677	#endif	800	#endif
678	}	801	}
679		802
680	int	803	unsigned int
681	ev_method (EV_P)	804	ev_supported_backends (void)
682	{	805	{
683	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;
684	}	847	}
685		848
686	static void	849	static void
687	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
688	{	851	{
689	if (!method)	852	if (!backend)
690	{	853	{
691	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
692	{	855	{
693	struct timespec ts;	856	struct timespec ts;
694	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
695	have_monotonic = 1;	858	have_monotonic = 1;
696	}	859	}
697	#endif	860	#endif
698		861
699	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
700	mn_now = get_clock ();	863	mn_now = get_clock ();
701	now_floor = mn_now;	864	now_floor = mn_now;
702	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
703		866
704	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
705	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
706	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
707	else
708	methods = EVMETHOD_ANY;
709		871
710	method = 0;	872	if (!(flags & 0x0000ffffUL))
711	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
712	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);
713	#endif	878	#endif
714	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
715	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
716	#endif	881	#endif
717	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
718	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
719	#endif	884	#endif
720	#if EV_USE_POLL	885	#if EV_USE_POLL
721	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
722	#endif	887	#endif
723	#if EV_USE_SELECT	888	#if EV_USE_SELECT
724	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
725	#endif	890	#endif
726		891
727	ev_watcher_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
728	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
729	}	894	}
730	}	895	}
731		896
732	void	897	static void
733	loop_destroy (EV_P)	898	loop_destroy (EV_P)
734	{	899	{
735	int i;	900	int i;
736		901
737	#if EV_USE_WIN32	902	#if EV_USE_PORT
738	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
739	#endif	904	#endif
740	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
741	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
742	#endif	907	#endif
743	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
744	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
745	#endif	910	#endif
746	#if EV_USE_POLL	911	#if EV_USE_POLL
747	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
748	#endif	913	#endif
749	#if EV_USE_SELECT	914	#if EV_USE_SELECT
750	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
751	#endif	916	#endif
752		917
753	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
754	array_free (pending, [i]);	919	array_free (pending, [i]);
755		920
756	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
757	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
758	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
759	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
760	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
761	array_free_microshit (prepare);	926	#endif
762	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
763		930
764	method = 0;	931	backend = 0;
765	}	932	}
766		933
767	static void	934	static void
768	loop_fork (EV_P)	935	loop_fork (EV_P)
769	{	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
770	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
771	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
772	#endif
773	#if EV_USE_KQUEUE
774	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
775	#endif	945	#endif
776		946
777	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
778	{	948	{
779	/* default loop */	949	/* default loop */
…		…
792	postfork = 0;	962	postfork = 0;
793	}	963	}
794		964
795	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
796	struct ev_loop *	966	struct ev_loop *
797	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
798	{	968	{
799	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));
800		970
801	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
802		972
803	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
804		974
805	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
806	return loop;	976	return loop;
807		977
808	return 0;	978	return 0;
809	}	979	}
810		980
…		…
822	}	992	}
823		993
824	#endif	994	#endif
825		995
826	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
827	struct ev_loop default_loop_struct;
828	static struct ev_loop *default_loop;
829
830	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
831	#else	999	#else
832	static int default_loop;
833
834	int	1000	int
		1001	ev_default_loop (unsigned int flags)
835	#endif	1002	#endif
836	ev_default_loop (int methods)
837	{	1003	{
838	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
839	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
840	return 0;	1006	return 0;
841		1007
842	if (!default_loop)	1008	if (!ev_default_loop_ptr)
843	{	1009	{
844	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
845	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
846	#else	1012	#else
847	default_loop = 1;	1013	ev_default_loop_ptr = 1;
848	#endif	1014	#endif
849		1015
850	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
851		1017
852	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
853	{	1019	{
854	siginit (EV_A);	1020	siginit (EV_A);
855		1021
856	#ifndef WIN32	1022	#ifndef _WIN32
857	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
858	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
859	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
860	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
861	#endif	1027	#endif
862	}	1028	}
863	else	1029	else
864	default_loop = 0;	1030	ev_default_loop_ptr = 0;
865	}	1031	}
866		1032
867	return default_loop;	1033	return ev_default_loop_ptr;
868	}	1034	}
869		1035
870	void	1036	void
871	ev_default_destroy (void)	1037	ev_default_destroy (void)
872	{	1038	{
873	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
874	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
875	#endif	1041	#endif
876		1042
877	#ifndef WIN32	1043	#ifndef _WIN32
878	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
879	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
880	#endif	1046	#endif
881		1047
882	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
890		1056
891	void	1057	void
892	ev_default_fork (void)	1058	ev_default_fork (void)
893	{	1059	{
894	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
895	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
896	#endif	1062	#endif
897		1063
898	if (method)	1064	if (backend)
899	postfork = 1;	1065	postfork = 1;
900	}	1066	}
901		1067
902	/*****************************************************************************/	1068	/*****************************************************************************/
903		1069
904	static int	1070	int inline_size
905	any_pending (EV_P)	1071	any_pending (EV_P)
906	{	1072	{
907	int pri;	1073	int pri;
908		1074
909	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
911	return 1;	1077	return 1;
912		1078
913	return 0;	1079	return 0;
914	}	1080	}
915		1081
916	static void	1082	void inline_speed
917	call_pending (EV_P)	1083	call_pending (EV_P)
918	{	1084	{
919	int pri;	1085	int pri;
920		1086
921	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
922	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
923	{	1089	{
924	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
925		1091
926	if (p->w)	1092	if (expect_true (p->w))
927	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
928	p->w->pending = 0;	1096	p->w->pending = 0;
929	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
930	}	1098	}
931	}	1099	}
932	}	1100	}
933		1101
934	static void	1102	void inline_size
935	timers_reify (EV_P)	1103	timers_reify (EV_P)
936	{	1104	{
937	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
938	{	1106	{
939	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
940		1108
941	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
942		1110
943	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
944	if (w->repeat)	1112	if (w->repeat)
945	{	1113	{
946	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
947	((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
948	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
949	}	1121	}
950	else	1122	else
951	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
952		1124
953	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
954	}	1126	}
955	}	1127	}
956		1128
957	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
958	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
959	{	1132	{
960	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
961	{	1134	{
962	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
963		1136
964	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
965		1138
966	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
967	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
968	{	1141	{
969	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
970
971	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
972	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
973	}	1145	}
974	else if (w->interval)	1146	else if (w->interval)
975	{	1147	{
976	((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;
977	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));
978	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
979	}	1151	}
980	else	1152	else
981	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
982		1154
983	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
984	}	1156	}
985	}	1157	}
986		1158
987	static void	1159	static void noinline
988	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
989	{	1161	{
990	int i;	1162	int i;
991		1163
992	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
993	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
994	{	1166	{
995	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
996		1168
997	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
998	((WT)w)->at = w->reschedule_cb (w, rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
999	else if (w->interval)	1171	else if (w->interval)
1000	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1001	}	1173	}
1002		1174
1003	/* now rebuild the heap */	1175	/* now rebuild the heap */
1004	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1005	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1006	}	1178	}
		1179	#endif
1007		1180
1008	inline int	1181	int inline_size
1009	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1010	{	1183	{
1011	mn_now = get_clock ();	1184	mn_now = get_clock ();
1012		1185
1013	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1014	{	1187	{
1015	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
1016	return 0;	1189	return 0;
1017	}	1190	}
1018	else	1191	else
1019	{	1192	{
1020	now_floor = mn_now;	1193	now_floor = mn_now;
1021	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1022	return 1;	1195	return 1;
1023	}	1196	}
1024	}	1197	}
1025		1198
1026	static void	1199	void inline_size
1027	time_update (EV_P)	1200	time_update (EV_P)
1028	{	1201	{
1029	int i;	1202	int i;
1030		1203
1031	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1033	{	1206	{
1034	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1035	{	1208	{
1036	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1037		1210
1038	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; )
1039	{	1220	{
1040	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1041		1222
1042	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1043	return; /* all is well */	1224	return; /* all is well */
1044		1225
1045	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1046	mn_now = get_clock ();	1227	mn_now = get_clock ();
1047	now_floor = mn_now;	1228	now_floor = mn_now;
1048	}	1229	}
1049		1230
		1231	# if EV_PERIODIC_ENABLE
1050	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1051	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1053	}	1236	}
1054	}	1237	}
1055	else	1238	else
1056	#endif	1239	#endif
1057	{	1240	{
1058	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1059		1242
1060	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))
1061	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1062	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1063		1248
1064	/* 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 */
1065	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1066	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1067	}	1252	}
1068		1253
1069	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1070	}	1255	}
1071	}	1256	}
1072		1257
1073	void	1258	void
1074	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1085	static int loop_done;	1270	static int loop_done;
1086		1271
1087	void	1272	void
1088	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1089	{	1274	{
1090	double block;
1091	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1092		1278
1093	do	1279	while (activecnt)
1094	{	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
1095	/* queue check watchers (and execute them) */	1289	/* queue check watchers (and execute them) */
1096	if (expect_false (preparecnt))	1290	if (expect_false (preparecnt))
1097	{	1291	{
1098	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1099	call_pending (EV_A);	1293	call_pending (EV_A);
…		…
1105		1299
1106	/* update fd-related kernel structures */	1300	/* update fd-related kernel structures */
1107	fd_reify (EV_A);	1301	fd_reify (EV_A);
1108		1302
1109	/* calculate blocking time */	1303	/* calculate blocking time */
		1304	{
		1305	double block;
1110		1306
1111	/* we only need this for !monotonic clock or timers, but as we basically	1307	if (flags & EVLOOP_NONBLOCK || idlecnt)
1112	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 */
1113	#if EV_USE_MONOTONIC	1312	#if EV_USE_MONOTONIC
1114	if (expect_true (have_monotonic))	1313	if (expect_true (have_monotonic))
1115	time_update_monotonic (EV_A);	1314	time_update_monotonic (EV_A);
1116	else	1315	else
1117	#endif	1316	#endif
1118	{	1317	{
1119	rt_now = ev_time ();	1318	ev_rt_now = ev_time ();
1120	mn_now = rt_now;	1319	mn_now = ev_rt_now;
1121	}	1320	}
1122		1321
1123	if (flags & EVLOOP_NONBLOCK || idlecnt)
1124	block = 0.;
1125	else
1126	{
1127	block = MAX_BLOCKTIME;	1322	block = MAX_BLOCKTIME;
1128		1323
1129	if (timercnt)	1324	if (timercnt)
1130	{	1325	{
1131	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1326	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1132	if (block > to) block = to;	1327	if (block > to) block = to;
1133	}	1328	}
1134		1329
		1330	#if EV_PERIODIC_ENABLE
1135	if (periodiccnt)	1331	if (periodiccnt)
1136	{	1332	{
1137	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1333	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1138	if (block > to) block = to;	1334	if (block > to) block = to;
1139	}	1335	}
		1336	#endif
1140		1337
1141	if (block < 0.) block = 0.;	1338	if (expect_false (block < 0.)) block = 0.;
1142	}	1339	}
1143		1340
1144	method_poll (EV_A_ block);	1341	backend_poll (EV_A_ block);
		1342	}
1145		1343
1146	/* update rt_now, do magic */	1344	/* update ev_rt_now, do magic */
1147	time_update (EV_A);	1345	time_update (EV_A);
1148		1346
1149	/* queue pending timers and reschedule them */	1347	/* queue pending timers and reschedule them */
1150	timers_reify (EV_A); /* relative timers called last */	1348	timers_reify (EV_A); /* relative timers called last */
		1349	#if EV_PERIODIC_ENABLE
1151	periodics_reify (EV_A); /* absolute timers called first */	1350	periodics_reify (EV_A); /* absolute timers called first */
		1351	#endif
1152		1352
1153	/* queue idle watchers unless io or timers are pending */	1353	/* queue idle watchers unless other events are pending */
1154	if (idlecnt && !any_pending (EV_A))	1354	if (idlecnt && !any_pending (EV_A))
1155	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1156		1356
1157	/* queue check watchers, to be executed first */	1357	/* queue check watchers, to be executed first */
1158	if (checkcnt)	1358	if (expect_false (checkcnt))
1159	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1160		1360
1161	call_pending (EV_A);	1361	call_pending (EV_A);
1162	}
1163	while (activecnt && !loop_done);
1164		1362
1165	if (loop_done != 2)	1363	if (expect_false (loop_done))
1166	loop_done = 0;	1364	break;
		1365	}
		1366
		1367	if (loop_done == EVUNLOOP_ONE)
		1368	loop_done = EVUNLOOP_CANCEL;
1167	}	1369	}
1168		1370
1169	void	1371	void
1170	ev_unloop (EV_P_ int how)	1372	ev_unloop (EV_P_ int how)
1171	{	1373	{
1172	loop_done = how;	1374	loop_done = how;
1173	}	1375	}
1174		1376
1175	/*****************************************************************************/	1377	/*****************************************************************************/
1176		1378
1177	inline void	1379	void inline_size
1178	wlist_add (WL *head, WL elem)	1380	wlist_add (WL *head, WL elem)
1179	{	1381	{
1180	elem->next = *head;	1382	elem->next = *head;
1181	*head = elem;	1383	*head = elem;
1182	}	1384	}
1183		1385
1184	inline void	1386	void inline_size
1185	wlist_del (WL *head, WL elem)	1387	wlist_del (WL *head, WL elem)
1186	{	1388	{
1187	while (*head)	1389	while (*head)
1188	{	1390	{
1189	if (*head == elem)	1391	if (*head == elem)
…		…
1194		1396
1195	head = &(*head)->next;	1397	head = &(*head)->next;
1196	}	1398	}
1197	}	1399	}
1198		1400
1199	inline void	1401	void inline_speed
1200	ev_clear_pending (EV_P_ W w)	1402	ev_clear_pending (EV_P_ W w)
1201	{	1403	{
1202	if (w->pending)	1404	if (w->pending)
1203	{	1405	{
1204	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1205	w->pending = 0;	1407	w->pending = 0;
1206	}	1408	}
1207	}	1409	}
1208		1410
1209	inline void	1411	void inline_speed
1210	ev_start (EV_P_ W w, int active)	1412	ev_start (EV_P_ W w, int active)
1211	{	1413	{
1212	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1213	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1214		1416
1215	w->active = active;	1417	w->active = active;
1216	ev_ref (EV_A);	1418	ev_ref (EV_A);
1217	}	1419	}
1218		1420
1219	inline void	1421	void inline_size
1220	ev_stop (EV_P_ W w)	1422	ev_stop (EV_P_ W w)
1221	{	1423	{
1222	ev_unref (EV_A);	1424	ev_unref (EV_A);
1223	w->active = 0;	1425	w->active = 0;
1224	}	1426	}
1225		1427
1226	/*****************************************************************************/	1428	/*****************************************************************************/
1227		1429
1228	void	1430	void
1229	ev_io_start (EV_P_ struct ev_io *w)	1431	ev_io_start (EV_P_ ev_io *w)
1230	{	1432	{
1231	int fd = w->fd;	1433	int fd = w->fd;
1232		1434
1233	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1234	return;	1436	return;
1235		1437
1236	assert (("ev_io_start called with negative fd", fd >= 0));	1438	assert (("ev_io_start called with negative fd", fd >= 0));
1237		1439
1238	ev_start (EV_A_ (W)w, 1);	1440	ev_start (EV_A_ (W)w, 1);
…		…
1241		1443
1242	fd_change (EV_A_ fd);	1444	fd_change (EV_A_ fd);
1243	}	1445	}
1244		1446
1245	void	1447	void
1246	ev_io_stop (EV_P_ struct ev_io *w)	1448	ev_io_stop (EV_P_ ev_io *w)
1247	{	1449	{
1248	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1249	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1250	return;	1452	return;
		1453
		1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1251		1455
1252	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1456	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1253	ev_stop (EV_A_ (W)w);	1457	ev_stop (EV_A_ (W)w);
1254		1458
1255	fd_change (EV_A_ w->fd);	1459	fd_change (EV_A_ w->fd);
1256	}	1460	}
1257		1461
1258	void	1462	void
1259	ev_timer_start (EV_P_ struct ev_timer *w)	1463	ev_timer_start (EV_P_ ev_timer *w)
1260	{	1464	{
1261	if (ev_is_active (w))	1465	if (expect_false (ev_is_active (w)))
1262	return;	1466	return;
1263		1467
1264	((WT)w)->at += mn_now;	1468	((WT)w)->at += mn_now;
1265		1469
1266	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.));
1267		1471
1268	ev_start (EV_A_ (W)w, ++timercnt);	1472	ev_start (EV_A_ (W)w, ++timercnt);
1269	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1270	timers [timercnt - 1] = w;	1474	timers [timercnt - 1] = w;
1271	upheap ((WT *)timers, timercnt - 1);	1475	upheap ((WT *)timers, timercnt - 1);
1272		1476
1273	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1274	}	1478	}
1275		1479
1276	void	1480	void
1277	ev_timer_stop (EV_P_ struct ev_timer *w)	1481	ev_timer_stop (EV_P_ ev_timer *w)
1278	{	1482	{
1279	ev_clear_pending (EV_A_ (W)w);	1483	ev_clear_pending (EV_A_ (W)w);
1280	if (!ev_is_active (w))	1484	if (expect_false (!ev_is_active (w)))
1281	return;	1485	return;
1282		1486
1283	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1284		1488
1285	if (((W)w)->active < timercnt--)	1489	if (expect_true (((W)w)->active < timercnt--))
1286	{	1490	{
1287	timers [((W)w)->active - 1] = timers [timercnt];	1491	timers [((W)w)->active - 1] = timers [timercnt];
1288	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1289	}	1493	}
1290		1494
1291	((WT)w)->at = w->repeat;	1495	((WT)w)->at -= mn_now;
1292		1496
1293	ev_stop (EV_A_ (W)w);	1497	ev_stop (EV_A_ (W)w);
1294	}	1498	}
1295		1499
1296	void	1500	void
1297	ev_timer_again (EV_P_ struct ev_timer *w)	1501	ev_timer_again (EV_P_ ev_timer *w)
1298	{	1502	{
1299	if (ev_is_active (w))	1503	if (ev_is_active (w))
1300	{	1504	{
1301	if (w->repeat)	1505	if (w->repeat)
1302	{	1506	{
1303	((WT)w)->at = mn_now + w->repeat;	1507	((WT)w)->at = mn_now + w->repeat;
1304	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1305	}	1509	}
1306	else	1510	else
1307	ev_timer_stop (EV_A_ w);	1511	ev_timer_stop (EV_A_ w);
1308	}	1512	}
1309	else if (w->repeat)	1513	else if (w->repeat)
		1514	{
		1515	w->at = w->repeat;
1310	ev_timer_start (EV_A_ w);	1516	ev_timer_start (EV_A_ w);
		1517	}
1311	}	1518	}
1312		1519
		1520	#if EV_PERIODIC_ENABLE
1313	void	1521	void
1314	ev_periodic_start (EV_P_ struct ev_periodic *w)	1522	ev_periodic_start (EV_P_ ev_periodic *w)
1315	{	1523	{
1316	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1317	return;	1525	return;
1318		1526
1319	if (w->reschedule_cb)	1527	if (w->reschedule_cb)
1320	((WT)w)->at = w->reschedule_cb (w, rt_now);	1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1321	else if (w->interval)	1529	else if (w->interval)
1322	{	1530	{
1323	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.));
1324	/* 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 */
1325	((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;
1326	}	1534	}
1327		1535
1328	ev_start (EV_A_ (W)w, ++periodiccnt);	1536	ev_start (EV_A_ (W)w, ++periodiccnt);
1329	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1330	periodics [periodiccnt - 1] = w;	1538	periodics [periodiccnt - 1] = w;
1331	upheap ((WT *)periodics, periodiccnt - 1);	1539	upheap ((WT *)periodics, periodiccnt - 1);
1332		1540
1333	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1334	}	1542	}
1335		1543
1336	void	1544	void
1337	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1545	ev_periodic_stop (EV_P_ ev_periodic *w)
1338	{	1546	{
1339	ev_clear_pending (EV_A_ (W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1340	if (!ev_is_active (w))	1548	if (expect_false (!ev_is_active (w)))
1341	return;	1549	return;
1342		1550
1343	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1344		1552
1345	if (((W)w)->active < periodiccnt--)	1553	if (expect_true (((W)w)->active < periodiccnt--))
1346	{	1554	{
1347	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1348	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1349	}	1557	}
1350		1558
1351	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1352	}	1560	}
1353		1561
1354	void	1562	void
1355	ev_periodic_again (EV_P_ struct ev_periodic *w)	1563	ev_periodic_again (EV_P_ ev_periodic *w)
1356	{	1564	{
		1565	/* TODO: use adjustheap and recalculation */
1357	ev_periodic_stop (EV_A_ w);	1566	ev_periodic_stop (EV_A_ w);
1358	ev_periodic_start (EV_A_ w);	1567	ev_periodic_start (EV_A_ w);
1359	}	1568	}
1360		1569	#endif
1361	void
1362	ev_idle_start (EV_P_ struct ev_idle *w)
1363	{
1364	if (ev_is_active (w))
1365	return;
1366
1367	ev_start (EV_A_ (W)w, ++idlecnt);
1368	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1369	idles [idlecnt - 1] = w;
1370	}
1371
1372	void
1373	ev_idle_stop (EV_P_ struct ev_idle *w)
1374	{
1375	ev_clear_pending (EV_A_ (W)w);
1376	if (ev_is_active (w))
1377	return;
1378
1379	idles [((W)w)->active - 1] = idles [--idlecnt];
1380	ev_stop (EV_A_ (W)w);
1381	}
1382
1383	void
1384	ev_prepare_start (EV_P_ struct ev_prepare *w)
1385	{
1386	if (ev_is_active (w))
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++preparecnt);
1390	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1391	prepares [preparecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1402	ev_stop (EV_A_ (W)w);
1403	}
1404
1405	void
1406	ev_check_start (EV_P_ struct ev_check *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++checkcnt);
1412	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1413	checks [checkcnt - 1] = w;
1414	}
1415
1416	void
1417	ev_check_stop (EV_P_ struct ev_check *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	checks [((W)w)->active - 1] = checks [--checkcnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426		1570
1427	#ifndef SA_RESTART	1571	#ifndef SA_RESTART
1428	# define SA_RESTART 0	1572	# define SA_RESTART 0
1429	#endif	1573	#endif
1430		1574
1431	void	1575	void
1432	ev_signal_start (EV_P_ struct ev_signal *w)	1576	ev_signal_start (EV_P_ ev_signal *w)
1433	{	1577	{
1434	#if EV_MULTIPLICITY	1578	#if EV_MULTIPLICITY
1435	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));
1436	#endif	1580	#endif
1437	if (ev_is_active (w))	1581	if (expect_false (ev_is_active (w)))
1438	return;	1582	return;
1439		1583
1440	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));
1441		1585
1442	ev_start (EV_A_ (W)w, 1);	1586	ev_start (EV_A_ (W)w, 1);
1443	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1587	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1444	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1588	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1445		1589
1446	if (!((WL)w)->next)	1590	if (!((WL)w)->next)
1447	{	1591	{
1448	#if WIN32	1592	#if _WIN32
1449	signal (w->signum, sighandler);	1593	signal (w->signum, sighandler);
1450	#else	1594	#else
1451	struct sigaction sa;	1595	struct sigaction sa;
1452	sa.sa_handler = sighandler;	1596	sa.sa_handler = sighandler;
1453	sigfillset (&sa.sa_mask);	1597	sigfillset (&sa.sa_mask);
…		…
1456	#endif	1600	#endif
1457	}	1601	}
1458	}	1602	}
1459		1603
1460	void	1604	void
1461	ev_signal_stop (EV_P_ struct ev_signal *w)	1605	ev_signal_stop (EV_P_ ev_signal *w)
1462	{	1606	{
1463	ev_clear_pending (EV_A_ (W)w);	1607	ev_clear_pending (EV_A_ (W)w);
1464	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1465	return;	1609	return;
1466		1610
1467	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1468	ev_stop (EV_A_ (W)w);	1612	ev_stop (EV_A_ (W)w);
1469		1613
1470	if (!signals [w->signum - 1].head)	1614	if (!signals [w->signum - 1].head)
1471	signal (w->signum, SIG_DFL);	1615	signal (w->signum, SIG_DFL);
1472	}	1616	}
1473		1617
1474	void	1618	void
1475	ev_child_start (EV_P_ struct ev_child *w)	1619	ev_child_start (EV_P_ ev_child *w)
1476	{	1620	{
1477	#if EV_MULTIPLICITY	1621	#if EV_MULTIPLICITY
1478	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));
1479	#endif	1623	#endif
1480	if (ev_is_active (w))	1624	if (expect_false (ev_is_active (w)))
1481	return;	1625	return;
1482		1626
1483	ev_start (EV_A_ (W)w, 1);	1627	ev_start (EV_A_ (W)w, 1);
1484	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1485	}	1629	}
1486		1630
1487	void	1631	void
1488	ev_child_stop (EV_P_ struct ev_child *w)	1632	ev_child_stop (EV_P_ ev_child *w)
1489	{	1633	{
1490	ev_clear_pending (EV_A_ (W)w);	1634	ev_clear_pending (EV_A_ (W)w);
1491	if (ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1492	return;	1636	return;
1493		1637
1494	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1495	ev_stop (EV_A_ (W)w);	1639	ev_stop (EV_A_ (W)w);
1496	}	1640	}
1497		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
1498	/*****************************************************************************/	1869	/*****************************************************************************/
1499		1870
1500	struct ev_once	1871	struct ev_once
1501	{	1872	{
1502	struct ev_io io;	1873	ev_io io;
1503	struct ev_timer to;	1874	ev_timer to;
1504	void (*cb)(int revents, void *arg);	1875	void (*cb)(int revents, void *arg);
1505	void *arg;	1876	void *arg;
1506	};	1877	};
1507		1878
1508	static void	1879	static void
…		…
1517		1888
1518	cb (revents, arg);	1889	cb (revents, arg);
1519	}	1890	}
1520		1891
1521	static void	1892	static void
1522	once_cb_io (EV_P_ struct ev_io *w, int revents)	1893	once_cb_io (EV_P_ ev_io *w, int revents)
1523	{	1894	{
1524	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);
1525	}	1896	}
1526		1897
1527	static void	1898	static void
1528	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1899	once_cb_to (EV_P_ ev_timer *w, int revents)
1529	{	1900	{
1530	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);
1531	}	1902	}
1532		1903
1533	void	1904	void
1534	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)
1535	{	1906	{
1536	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));
1537		1908
1538	if (!once)	1909	if (expect_false (!once))
		1910	{
1539	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1911	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1540	else	1912	return;
1541	{	1913	}
		1914
1542	once->cb = cb;	1915	once->cb = cb;
1543	once->arg = arg;	1916	once->arg = arg;
1544		1917
1545	ev_watcher_init (&once->io, once_cb_io);	1918	ev_init (&once->io, once_cb_io);
1546	if (fd >= 0)	1919	if (fd >= 0)
1547	{	1920	{
1548	ev_io_set (&once->io, fd, events);	1921	ev_io_set (&once->io, fd, events);
1549	ev_io_start (EV_A_ &once->io);	1922	ev_io_start (EV_A_ &once->io);
1550	}	1923	}
1551		1924
1552	ev_watcher_init (&once->to, once_cb_to);	1925	ev_init (&once->to, once_cb_to);
1553	if (timeout >= 0.)	1926	if (timeout >= 0.)
1554	{	1927	{
1555	ev_timer_set (&once->to, timeout, 0.);	1928	ev_timer_set (&once->to, timeout, 0.);
1556	ev_timer_start (EV_A_ &once->to);	1929	ev_timer_start (EV_A_ &once->to);
1557	}
1558	}	1930	}
1559	}	1931	}
1560		1932
		1933	#ifdef __cplusplus
		1934	}
		1935	#endif
		1936

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