[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.142 by root, Tue Nov 27 06:19:08 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>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# 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
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# 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
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#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) */
124	#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) */
125	#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 */
126	/#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 */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	200	#else
134	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
135	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
136	#endif	205	#endif
137		206
138	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
140		209
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
144	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
147		219
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		221
150	#if WIN32	222	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	224	#endif
155		225
156	/*****************************************************************************/	226	/*****************************************************************************/
157		227
158	static void (*syserr_cb)(void);	228	static void (syserr_cb)(const char msg);
159		229
160	void ev_set_syserr_cb (void (*cb)(void))	230	void
		231	ev_set_syserr_cb (void (cb)(const char msg))
161	{	232	{
162	syserr_cb = cb;	233	syserr_cb = cb;
163	}	234	}
164		235
165	static void	236	static void noinline
166	syserr (void)	237	syserr (const char *msg)
167	{	238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
168	if (syserr_cb)	242	if (syserr_cb)
169	syserr_cb ();	243	syserr_cb (msg);
170	else	244	else
171	{	245	{
172	perror ("libev");	246	perror (msg);
173	abort ();	247	abort ();
174	}	248	}
175	}	249	}
176		250
177	static void (alloc)(void *ptr, long size);	251	static void (alloc)(void *ptr, long size);
178		252
		253	void
179	void ev_set_allocator (void (cb)(void *ptr, long size))	254	ev_set_allocator (void (cb)(void *ptr, long size))
180	{	255	{
181	alloc = cb;	256	alloc = cb;
182	}	257	}
183		258
184	static void *	259	static void *
…		…
203	typedef struct	278	typedef struct
204	{	279	{
205	WL head;	280	WL head;
206	unsigned char events;	281	unsigned char events;
207	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
208	} ANFD;	286	} ANFD;
209		287
210	typedef struct	288	typedef struct
211	{	289	{
212	W w;	290	W w;
213	int events;	291	int events;
214	} ANPENDING;	292	} ANPENDING;
215		293
216	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
217		295
218	struct ev_loop	296	struct ev_loop
219	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	301	#include "ev_vars.h"
222	};
223	# undef VAR	302	#undef VAR
		303	};
224	# 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;
225		308
226	#else	309	#else
227		310
		311	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	313	#include "ev_vars.h"
230	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
231		317
232	#endif	318	#endif
233		319
234	/*****************************************************************************/	320	/*****************************************************************************/
235		321
236	inline ev_tstamp	322	ev_tstamp
237	ev_time (void)	323	ev_time (void)
238	{	324	{
239	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
240	struct timespec ts;	326	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
245	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
246	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
247	#endif	333	#endif
248	}	334	}
249		335
250	inline ev_tstamp	336	ev_tstamp inline_size
251	get_clock (void)	337	get_clock (void)
252	{	338	{
253	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
254	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
255	{	341	{
…		…
260	#endif	346	#endif
261		347
262	return ev_time ();	348	return ev_time ();
263	}	349	}
264		350
		351	#if EV_MULTIPLICITY
265	ev_tstamp	352	ev_tstamp
266	ev_now (EV_P)	353	ev_now (EV_P)
267	{	354	{
268	return rt_now;	355	return ev_rt_now;
269	}	356	}
		357	#endif
270		358
271	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
272		360
273	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
275	{ \	363	{ \
276	int newcnt = cur; \	364	int newcnt = cur; \
277	do \	365	do \
278	{ \	366	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	368	} \
281	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
282	\	370	\
283	base = ev_realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
284	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	373	cur = newcnt; \
286	}	374	}
287		375
288	#define array_slim(stem) \	376	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	378	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (base) (stem ## max)); \	380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
294	}	382	}
295		383
296	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
297	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;
298		386
299	/*****************************************************************************/	387	/*****************************************************************************/
300		388
301	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
302	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
303	{	419	{
304	while (count--)	420	while (count--)
305	{	421	{
306	base->head = 0;	422	base->head = 0;
…		…
309		425
310	++base;	426	++base;
311	}	427	}
312	}	428	}
313		429
314	static void	430	void inline_speed
315	event (EV_P_ W w, int events)
316	{
317	if (w->pending)
318	{
319	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
320	return;
321	}
322
323	w->pending = ++pendingcnt [ABSPRI (w)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
325	pendings [ABSPRI (w)][w->pending - 1].w = w;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;
327	}
328
329	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{
332	int i;
333
334	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);
336	}
337
338	static void
339	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
340	{	432	{
341	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	434	ev_io *w;
343		435
344	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)
345	{	437	{
346	int ev = w->events & events;	438	int ev = w->events & revents;
347		439
348	if (ev)	440	if (ev)
349	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
350	}	442	}
351	}	443	}
352		444
353	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
354		450
355	static void	451	void inline_size
356	fd_reify (EV_P)	452	fd_reify (EV_P)
357	{	453	{
358	int i;	454	int i;
359		455
360	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
361	{	457	{
362	int fd = fdchanges [i];	458	int fd = fdchanges [i];
363	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	460	ev_io *w;
365		461
366	int events = 0;	462	int events = 0;
367		463
368	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)
369	events \|= w->events;	465	events \|= w->events;
370		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
371	anfd->reify = 0;	476	anfd->reify = 0;
372		477
373	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	479	anfd->events = events;
375	}	480	}
376		481
377	fdchangecnt = 0;	482	fdchangecnt = 0;
378	}	483	}
379		484
380	static void	485	void inline_size
381	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
382	{	487	{
383	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
384	return;	489	return;
385		490
386	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
387		492
388	++fdchangecnt;	493	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
391	}	496	}
392		497
393	static void	498	void inline_speed
394	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
395	{	500	{
396	struct ev_io *w;	501	ev_io *w;
397		502
398	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
399	{	504	{
400	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
401	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);
402	}	507	}
		508	}
		509
		510	int inline_size
		511	fd_valid (int fd)
		512	{
		513	#ifdef _WIN32
		514	return _get_osfhandle (fd) != -1;
		515	#else
		516	return fcntl (fd, F_GETFD) != -1;
		517	#endif
403	}	518	}
404		519
405	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
406	static void	521	static void noinline
407	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
408	{	523	{
409	int fd;	524	int fd;
410		525
411	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	527	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
415	}	530	}
416		531
417	/* 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 */
418	static void	533	static void noinline
419	fd_enomem (EV_P)	534	fd_enomem (EV_P)
420	{	535	{
421	int fd;	536	int fd;
422		537
423	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
426	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
427	return;	542	return;
428	}	543	}
429	}	544	}
430		545
431	/* susually 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 */
432	static void	547	static void noinline
433	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
434	{	549	{
435	int fd;	550	int fd;
436		551
437	/* 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 */
…		…
443	}	558	}
444	}	559	}
445		560
446	/*****************************************************************************/	561	/*****************************************************************************/
447		562
448	static void	563	void inline_speed
449	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
450	{	565	{
451	WT w = heap [k];	566	WT w = heap [k];
452		567
453	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
460	heap [k] = w;	575	heap [k] = w;
461	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
462		577
463	}	578	}
464		579
465	static void	580	void inline_speed
466	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
467	{	582	{
468	WT w = heap [k];	583	WT w = heap [k];
469		584
470	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
484		599
485	heap [k] = w;	600	heap [k] = w;
486	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
487	}	602	}
488		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
489	/*****************************************************************************/	611	/*****************************************************************************/
490		612
491	typedef struct	613	typedef struct
492	{	614	{
493	WL head;	615	WL head;
…		…
497	static ANSIG *signals;	619	static ANSIG *signals;
498	static int signalmax;	620	static int signalmax;
499		621
500	static int sigpipe [2];	622	static int sigpipe [2];
501	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
502	static struct ev_io sigev;	624	static ev_io sigev;
503		625
504	static void	626	void inline_size
505	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
506	{	628	{
507	while (count--)	629	while (count--)
508	{	630	{
509	base->head = 0;	631	base->head = 0;
…		…
514	}	636	}
515		637
516	static void	638	static void
517	sighandler (int signum)	639	sighandler (int signum)
518	{	640	{
519	#if WIN32	641	#if _WIN32
520	signal (signum, sighandler);	642	signal (signum, sighandler);
521	#endif	643	#endif
522		644
523	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
524		646
…		…
529	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	652	errno = old_errno;
531	}	653	}
532	}	654	}
533		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
534	static void	676	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
536	{	678	{
537	WL w;
538	int signum;	679	int signum;
539		680
540	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	682	gotsig = 0;
542		683
543	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
545	{	686	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;
547
548	for (w = signals [signum].head; w; w = w->next)
549	event (EV_A_ (W)w, EV_SIGNAL);
550	}
551	}	687	}
552		688
553	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
554	siginit (EV_P)	702	siginit (EV_P)
555	{	703	{
556	#ifndef WIN32	704	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		706
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	710	}
569		711
570	/*****************************************************************************/	712	/*****************************************************************************/
571		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
572	#ifndef WIN32	716	#ifndef _WIN32
573		717
574	static struct ev_child *childs [PID_HASHSIZE];
575	static struct ev_signal childev;	718	static ev_signal childev;
576		719
577	#ifndef WCONTINUED	720	void inline_speed
578	# define WCONTINUED 0
579	#endif
580
581	static void
582	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)
583	{	722	{
584	struct ev_child *w;	723	ev_child *w;
585		724
586	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)
587	if (w->pid == pid \|\| !w->pid)	726	if (w->pid == pid \|\| !w->pid)
588	{	727	{
589	ev_priority (w) = ev_priority (sw); /* need to do it now */	728	ev_priority (w) = ev_priority (sw); /* need to do it now */
590	w->rpid = pid;	729	w->rpid = pid;
591	w->rstatus = status;	730	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	732	}
594	}	733	}
595		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
596	static void	739	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
598	{	741	{
599	int pid, status;	742	int pid, status;
600		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
602	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
603	/* 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 */
604	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		754
606	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
607	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 */
608	}
609	}	757	}
610		758
611	#endif	759	#endif
612		760
613	/*****************************************************************************/	761	/*****************************************************************************/
614		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
615	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
617	#endif	768	#endif
618	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
636	{	787	{
637	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
638	}	789	}
639		790
640	/* 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 */
641	static int	792	int inline_size
642	enable_secure (void)	793	enable_secure (void)
643	{	794	{
644	#ifdef WIN32	795	#ifdef _WIN32
645	return 0;	796	return 0;
646	#else	797	#else
647	return getuid () != geteuid ()	798	return getuid () != geteuid ()
648	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
649	#endif	800	#endif
650	}	801	}
651		802
652	int	803	unsigned int
653	ev_method (EV_P)	804	ev_supported_backends (void)
654	{	805	{
655	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;
656	}	847	}
657		848
658	static void	849	static void
659	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
660	{	851	{
661	if (!method)	852	if (!backend)
662	{	853	{
663	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
664	{	855	{
665	struct timespec ts;	856	struct timespec ts;
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	858	have_monotonic = 1;
668	}	859	}
669	#endif	860	#endif
670		861
671	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	863	mn_now = get_clock ();
673	now_floor = mn_now;	864	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
675		866
676	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else
680	methods = EVMETHOD_ANY;
681		871
682	method = 0;	872	if (!(flags & 0x0000ffffUL))
683	#if EV_USE_WIN32	873	flags \|= ev_recommended_backends ();
684	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);
685	#endif	878	#endif
686	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688	#endif	881	#endif
689	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691	#endif	884	#endif
692	#if EV_USE_POLL	885	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694	#endif	887	#endif
695	#if EV_USE_SELECT	888	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697	#endif	890	#endif
698	}
699	}
700		891
701	void	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
702	loop_destroy (EV_P)	898	loop_destroy (EV_P)
703	{	899	{
704	int i;	900	int i;
705		901
706	#if EV_USE_WIN32	902	#if EV_USE_PORT
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
708	#endif	904	#endif
709	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711	#endif	907	#endif
712	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714	#endif	910	#endif
715	#if EV_USE_POLL	911	#if EV_USE_POLL
716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717	#endif	913	#endif
718	#if EV_USE_SELECT	914	#if EV_USE_SELECT
719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720	#endif	916	#endif
721		917
722	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	919	array_free (pending, [i]);
724		920
		921	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	922	array_free (fdchange, EMPTY0);
726	array_free (timer, );	923	array_free (timer, EMPTY0);
		924	#if EV_PERIODIC_ENABLE
727	array_free (periodic, );	925	array_free (periodic, EMPTY0);
		926	#endif
728	array_free (idle, );	927	array_free (idle, EMPTY0);
729	array_free (prepare, );	928	array_free (prepare, EMPTY0);
730	array_free (check, );	929	array_free (check, EMPTY0);
731		930
732	method = 0;	931	backend = 0;
733	/TODO/
734	}	932	}
735		933
736	void	934	static void
737	loop_fork (EV_P)	935	loop_fork (EV_P)
738	{	936	{
739	/TODO/	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
740	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742	#endif	945	#endif
743	#if EV_USE_KQUEUE	946
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	947	if (ev_is_active (&sigev))
745	#endif	948	{
		949	/* default loop */
		950
		951	ev_ref (EV_A);
		952	ev_io_stop (EV_A_ &sigev);
		953	close (sigpipe [0]);
		954	close (sigpipe [1]);
		955
		956	while (pipe (sigpipe))
		957	syserr ("(libev) error creating pipe");
		958
		959	siginit (EV_A);
		960	}
		961
		962	postfork = 0;
746	}	963	}
747		964
748	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
749	struct ev_loop *	966	struct ev_loop *
750	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
751	{	968	{
752	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));
753		970
754	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
755		972
756	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
757		974
758	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
759	return loop;	976	return loop;
760		977
761	return 0;	978	return 0;
762	}	979	}
763		980
…		…
769	}	986	}
770		987
771	void	988	void
772	ev_loop_fork (EV_P)	989	ev_loop_fork (EV_P)
773	{	990	{
774	loop_fork (EV_A);	991	postfork = 1;
775	}	992	}
776		993
777	#endif	994	#endif
778		995
779	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
784	#else	999	#else
785	static int default_loop;
786
787	int	1000	int
		1001	ev_default_loop (unsigned int flags)
788	#endif	1002	#endif
789	ev_default_loop (int methods)
790	{	1003	{
791	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
793	return 0;	1006	return 0;
794		1007
795	if (!default_loop)	1008	if (!ev_default_loop_ptr)
796	{	1009	{
797	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	1012	#else
800	default_loop = 1;	1013	ev_default_loop_ptr = 1;
801	#endif	1014	#endif
802		1015
803	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
804		1017
805	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
806	{	1019	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	1020	siginit (EV_A);
810		1021
811	#ifndef WIN32	1022	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	1027	#endif
817	}	1028	}
818	else	1029	else
819	default_loop = 0;	1030	ev_default_loop_ptr = 0;
820	}	1031	}
821		1032
822	return default_loop;	1033	return ev_default_loop_ptr;
823	}	1034	}
824		1035
825	void	1036	void
826	ev_default_destroy (void)	1037	ev_default_destroy (void)
827	{	1038	{
828	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	1041	#endif
831		1042
		1043	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
834		1047
835	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	1049	ev_io_stop (EV_A_ &sigev);
837		1050
838	close (sigpipe [0]); sigpipe [0] = 0;	1051	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		1056
844	void	1057	void
845	ev_default_fork (void)	1058	ev_default_fork (void)
846	{	1059	{
847	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1062	#endif
850		1063
851	loop_fork (EV_A);	1064	if (backend)
852		1065	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	1066	}
861		1067
862	/*****************************************************************************/	1068	/*****************************************************************************/
863		1069
864	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
865	call_pending (EV_P)	1083	call_pending (EV_P)
866	{	1084	{
867	int pri;	1085	int pri;
868		1086
869	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
871	{	1089	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1091
874	if (p->w)	1092	if (expect_true (p->w))
875	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
876	p->w->pending = 0;	1096	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
878	}	1098	}
879	}	1099	}
880	}	1100	}
881		1101
882	static void	1102	void inline_size
883	timers_reify (EV_P)	1103	timers_reify (EV_P)
884	{	1104	{
885	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
886	{	1106	{
887	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
888		1108
889	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
890		1110
891	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
892	if (w->repeat)	1112	if (w->repeat)
893	{	1113	{
894	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
895	((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
896	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
897	}	1121	}
898	else	1122	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1124
901	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1126	}
903	}	1127	}
904		1128
905	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
906	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
907	{	1132	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1134	{
910	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
911		1136
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1138
914	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
915	if (w->interval)	1140	if (w->reschedule_cb)
916	{	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	{
917	((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;
918	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));
919	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1151	}
921	else	1152	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1154
924	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1156	}
926	}	1157	}
927		1158
928	static void	1159	static void noinline
929	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
930	{	1161	{
931	int i;	1162	int i;
932		1163
933	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
935	{	1166	{
936	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
937		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1171	else if (w->interval)
939	{
940	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;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1173	}
951	}
952		1174
953	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
954	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
955	{	1183	{
956	mn_now = get_clock ();	1184	mn_now = get_clock ();
957		1185
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1187	{
960	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1189	return 0;
962	}	1190	}
963	else	1191	else
964	{	1192	{
965	now_floor = mn_now;	1193	now_floor = mn_now;
966	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
967	return 1;	1195	return 1;
968	}	1196	}
969	}	1197	}
970		1198
971	static void	1199	void inline_size
972	time_update (EV_P)	1200	time_update (EV_P)
973	{	1201	{
974	int i;	1202	int i;
975		1203
976	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
978	{	1206	{
979	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
980	{	1208	{
981	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
982		1210
983	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; )
984	{	1220	{
985	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
986		1222
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1224	return; /* all is well */
989		1225
990	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1227	mn_now = get_clock ();
992	now_floor = mn_now;	1228	now_floor = mn_now;
993	}	1229	}
994		1230
		1231	# if EV_PERIODIC_ENABLE
995	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1236	}
999	}	1237	}
1000	else	1238	else
1001	#endif	1239	#endif
1002	{	1240	{
1003	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1004		1242
1005	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))
1006	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1008		1248
1009	/* 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 */
1010	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1252	}
1013		1253
1014	mn_now = rt_now;	1254	mn_now = ev_rt_now;
1015	}	1255	}
1016	}	1256	}
1017		1257
1018	void	1258	void
1019	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
1030	static int loop_done;	1270	static int loop_done;
1031		1271
1032	void	1272	void
1033	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1034	{	1274	{
1035	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1037		1278
1038	do	1279	while (activecnt)
1039	{	1280	{
1040	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1042	{	1283	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1285	call_pending (EV_A);
1045	}	1286	}
1046		1287
		1288	/* we might have forked, so reify kernel state if necessary */
		1289	if (expect_false (postfork))
		1290	loop_fork (EV_A);
		1291
1047	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1293	fd_reify (EV_A);
1049		1294
1050	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1051		1298
1052	/* we only need this for !monotonic clockor timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1053	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1054	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1057	else	1307	else
1058	#endif	1308	#endif
1059	{	1309	{
1060	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1311	mn_now = ev_rt_now;
1062	}	1312	}
1063		1313
1064	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1065	block = 0.;
1066	else
1067	{
1068	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1069		1315
1070	if (timercnt)	1316	if (timercnt)
1071	{	1317	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073	if (block > to) block = to;	1319	if (block > to) block = to;
1074	}	1320	}
1075		1321
		1322	#if EV_PERIODIC_ENABLE
1076	if (periodiccnt)	1323	if (periodiccnt)
1077	{	1324	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079	if (block > to) block = to;	1326	if (block > to) block = to;
1080	}	1327	}
		1328	#endif
1081		1329
1082	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1083	}	1331	}
1084		1332
1085	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1086		1335
1087	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1337	time_update (EV_A);
1089		1338
1090	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
1092	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
1093		1344
1094	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1095	if (!pendingcnt)	1346	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1348
1098	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1350	if (expect_false (checkcnt))
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1352
1102	call_pending (EV_A);	1353	call_pending (EV_A);
1103	}
1104	while (activecnt && !loop_done);
1105		1354
1106	if (loop_done != 2)	1355	if (expect_false (loop_done))
1107	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1108	}	1361	}
1109		1362
1110	void	1363	void
1111	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1112	{	1365	{
1113	loop_done = how;	1366	loop_done = how;
1114	}	1367	}
1115		1368
1116	/*****************************************************************************/	1369	/*****************************************************************************/
1117		1370
1118	inline void	1371	void inline_size
1119	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1120	{	1373	{
1121	elem->next = *head;	1374	elem->next = *head;
1122	*head = elem;	1375	*head = elem;
1123	}	1376	}
1124		1377
1125	inline void	1378	void inline_size
1126	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1127	{	1380	{
1128	while (*head)	1381	while (*head)
1129	{	1382	{
1130	if (*head == elem)	1383	if (*head == elem)
…		…
1135		1388
1136	head = &(*head)->next;	1389	head = &(*head)->next;
1137	}	1390	}
1138	}	1391	}
1139		1392
1140	inline void	1393	void inline_speed
1141	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1142	{	1395	{
1143	if (w->pending)	1396	if (w->pending)
1144	{	1397	{
1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146	w->pending = 0;	1399	w->pending = 0;
1147	}	1400	}
1148	}	1401	}
1149		1402
1150	inline void	1403	void inline_speed
1151	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1152	{	1405	{
1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155		1408
1156	w->active = active;	1409	w->active = active;
1157	ev_ref (EV_A);	1410	ev_ref (EV_A);
1158	}	1411	}
1159		1412
1160	inline void	1413	void inline_size
1161	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1162	{	1415	{
1163	ev_unref (EV_A);	1416	ev_unref (EV_A);
1164	w->active = 0;	1417	w->active = 0;
1165	}	1418	}
1166		1419
1167	/*****************************************************************************/	1420	/*****************************************************************************/
1168		1421
1169	void	1422	void
1170	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1171	{	1424	{
1172	int fd = w->fd;	1425	int fd = w->fd;
1173		1426
1174	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1175	return;	1428	return;
1176		1429
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1431
1179	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1435
1183	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1184	}	1437	}
1185		1438
1186	void	1439	void
1187	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1188	{	1441	{
1189	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1191	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192		1447
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1195		1450
1196	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1197	}	1452	}
1198		1453
1199	void	1454	void
1200	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1201	{	1456	{
1202	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1203	return;	1458	return;
1204		1459
1205	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1206		1461
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1463
1209	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1213		1468
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1470	}
1216		1471
1217	void	1472	void
1218	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1219	{	1474	{
1220	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1221	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1222	return;	1477	return;
1223		1478
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1480
1226	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1227	{	1482	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1485	}
1231		1486
1232	((WT)w)->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1233		1488
1234	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1235	}	1490	}
1236		1491
1237	void	1492	void
1238	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1239	{	1494	{
1240	if (ev_is_active (w))	1495	if (ev_is_active (w))
1241	{	1496	{
1242	if (w->repeat)	1497	if (w->repeat)
1243	{	1498	{
1244	((WT)w)->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1501	}
1247	else	1502	else
1248	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1249	}	1504	}
1250	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1252	}	1510	}
1253		1511
		1512	#if EV_PERIODIC_ENABLE
1254	void	1513	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1256	{	1515	{
1257	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1258	return;	1517	return;
1259		1518
		1519	if (w->reschedule_cb)
		1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1521	else if (w->interval)
		1522	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1263	if (w->interval)
1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1526	}
1265		1527
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1270		1532
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1534	}
1273		1535
1274	void	1536	void
1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1276	{	1538	{
1277	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1279	return;	1541	return;
1280		1542
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1544
1283	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1284	{	1546	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1549	}
1288		1550
1289	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1290	}	1552	}
1291		1553
1292	void	1554	void
		1555	ev_periodic_again (EV_P_ ev_periodic *w)
		1556	{
		1557	/* TODO: use adjustheap and recalculation */
		1558	ev_periodic_stop (EV_A_ w);
		1559	ev_periodic_start (EV_A_ w);
		1560	}
		1561	#endif
		1562
		1563	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1564	ev_idle_start (EV_P_ ev_idle *w)
1294	{	1565	{
1295	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1296	return;	1567	return;
1297		1568
1298	ev_start (EV_A_ (W)w, ++idlecnt);	1569	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );	1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1300	idles [idlecnt - 1] = w;	1571	idles [idlecnt - 1] = w;
1301	}	1572	}
1302		1573
1303	void	1574	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)	1575	ev_idle_stop (EV_P_ ev_idle *w)
1305	{	1576	{
1306	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1308	return;	1579	return;
1309		1580
		1581	{
		1582	int active = ((W)w)->active;
1310	idles [((W)w)->active - 1] = idles [--idlecnt];	1583	idles [active - 1] = idles [--idlecnt];
		1584	((W)idles [active - 1])->active = active;
		1585	}
		1586
1311	ev_stop (EV_A_ (W)w);	1587	ev_stop (EV_A_ (W)w);
1312	}	1588	}
1313		1589
1314	void	1590	void
1315	ev_prepare_start (EV_P_ struct ev_prepare *w)	1591	ev_prepare_start (EV_P_ ev_prepare *w)
1316	{	1592	{
1317	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1318	return;	1594	return;
1319		1595
1320	ev_start (EV_A_ (W)w, ++preparecnt);	1596	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );	1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1322	prepares [preparecnt - 1] = w;	1598	prepares [preparecnt - 1] = w;
1323	}	1599	}
1324		1600
1325	void	1601	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1327	{	1603	{
1328	ev_clear_pending (EV_A_ (W)w);	1604	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))	1605	if (expect_false (!ev_is_active (w)))
1330	return;	1606	return;
1331		1607
		1608	{
		1609	int active = ((W)w)->active;
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1610	prepares [active - 1] = prepares [--preparecnt];
		1611	((W)prepares [active - 1])->active = active;
		1612	}
		1613
1333	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1334	}	1615	}
1335		1616
1336	void	1617	void
1337	ev_check_start (EV_P_ struct ev_check *w)	1618	ev_check_start (EV_P_ ev_check *w)
1338	{	1619	{
1339	if (ev_is_active (w))	1620	if (expect_false (ev_is_active (w)))
1340	return;	1621	return;
1341		1622
1342	ev_start (EV_A_ (W)w, ++checkcnt);	1623	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );	1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1344	checks [checkcnt - 1] = w;	1625	checks [checkcnt - 1] = w;
1345	}	1626	}
1346		1627
1347	void	1628	void
1348	ev_check_stop (EV_P_ struct ev_check *w)	1629	ev_check_stop (EV_P_ ev_check *w)
1349	{	1630	{
1350	ev_clear_pending (EV_A_ (W)w);	1631	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))	1632	if (expect_false (!ev_is_active (w)))
1352	return;	1633	return;
1353		1634
		1635	{
		1636	int active = ((W)w)->active;
1354	checks [((W)w)->active - 1] = checks [--checkcnt];	1637	checks [active - 1] = checks [--checkcnt];
		1638	((W)checks [active - 1])->active = active;
		1639	}
		1640
1355	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1356	}	1642	}
1357		1643
1358	#ifndef SA_RESTART	1644	#ifndef SA_RESTART
1359	# define SA_RESTART 0	1645	# define SA_RESTART 0
1360	#endif	1646	#endif
1361		1647
1362	void	1648	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1649	ev_signal_start (EV_P_ ev_signal *w)
1364	{	1650	{
1365	#if EV_MULTIPLICITY	1651	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1653	#endif
1368	if (ev_is_active (w))	1654	if (expect_false (ev_is_active (w)))
1369	return;	1655	return;
1370		1656
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1658
1373	ev_start (EV_A_ (W)w, 1);	1659	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1662
1377	if (!((WL)w)->next)	1663	if (!((WL)w)->next)
1378	{	1664	{
1379	#if WIN32	1665	#if _WIN32
1380	signal (w->signum, sighandler);	1666	signal (w->signum, sighandler);
1381	#else	1667	#else
1382	struct sigaction sa;	1668	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1669	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1670	sigfillset (&sa.sa_mask);
…		…
1387	#endif	1673	#endif
1388	}	1674	}
1389	}	1675	}
1390		1676
1391	void	1677	void
1392	ev_signal_stop (EV_P_ struct ev_signal *w)	1678	ev_signal_stop (EV_P_ ev_signal *w)
1393	{	1679	{
1394	ev_clear_pending (EV_A_ (W)w);	1680	ev_clear_pending (EV_A_ (W)w);
1395	if (!ev_is_active (w))	1681	if (expect_false (!ev_is_active (w)))
1396	return;	1682	return;
1397		1683
1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399	ev_stop (EV_A_ (W)w);	1685	ev_stop (EV_A_ (W)w);
1400		1686
1401	if (!signals [w->signum - 1].head)	1687	if (!signals [w->signum - 1].head)
1402	signal (w->signum, SIG_DFL);	1688	signal (w->signum, SIG_DFL);
1403	}	1689	}
1404		1690
1405	void	1691	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1692	ev_child_start (EV_P_ ev_child *w)
1407	{	1693	{
1408	#if EV_MULTIPLICITY	1694	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1695	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1696	#endif
1411	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1412	return;	1698	return;
1413		1699
1414	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1416	}	1702	}
1417		1703
1418	void	1704	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1705	ev_child_stop (EV_P_ ev_child *w)
1420	{	1706	{
1421	ev_clear_pending (EV_A_ (W)w);	1707	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1708	if (expect_false (!ev_is_active (w)))
1423	return;	1709	return;
1424		1710
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1712	ev_stop (EV_A_ (W)w);
1427	}	1713	}
1428		1714
		1715	#if EV_EMBED_ENABLE
		1716	void noinline
		1717	ev_embed_sweep (EV_P_ ev_embed *w)
		1718	{
		1719	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1720	}
		1721
		1722	static void
		1723	embed_cb (EV_P_ ev_io *io, int revents)
		1724	{
		1725	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1726
		1727	if (ev_cb (w))
		1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1729	else
		1730	ev_embed_sweep (loop, w);
		1731	}
		1732
		1733	void
		1734	ev_embed_start (EV_P_ ev_embed *w)
		1735	{
		1736	if (expect_false (ev_is_active (w)))
		1737	return;
		1738
		1739	{
		1740	struct ev_loop *loop = w->loop;
		1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1743	}
		1744
		1745	ev_set_priority (&w->io, ev_priority (w));
		1746	ev_io_start (EV_A_ &w->io);
		1747
		1748	ev_start (EV_A_ (W)w, 1);
		1749	}
		1750
		1751	void
		1752	ev_embed_stop (EV_P_ ev_embed *w)
		1753	{
		1754	ev_clear_pending (EV_A_ (W)w);
		1755	if (expect_false (!ev_is_active (w)))
		1756	return;
		1757
		1758	ev_io_stop (EV_A_ &w->io);
		1759
		1760	ev_stop (EV_A_ (W)w);
		1761	}
		1762	#endif
		1763
		1764	#if EV_STAT_ENABLE
		1765
		1766	# ifdef _WIN32
		1767	# define lstat(a,b) stat(a,b)
		1768	# endif
		1769
		1770	void
		1771	ev_stat_stat (EV_P_ ev_stat *w)
		1772	{
		1773	if (lstat (w->path, &w->attr) < 0)
		1774	w->attr.st_nlink = 0;
		1775	else if (!w->attr.st_nlink)
		1776	w->attr.st_nlink = 1;
		1777	}
		1778
		1779	static void
		1780	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1781	{
		1782	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1783
		1784	/* we copy this here each the time so that */
		1785	/* prev has the old value when the callback gets invoked */
		1786	w->prev = w->attr;
		1787	ev_stat_stat (EV_A_ w);
		1788
		1789	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1790	ev_feed_event (EV_A_ w, EV_STAT);
		1791	}
		1792
		1793	void
		1794	ev_stat_start (EV_P_ ev_stat *w)
		1795	{
		1796	if (expect_false (ev_is_active (w)))
		1797	return;
		1798
		1799	/* since we use memcmp, we need to clear any padding data etc. */
		1800	memset (&w->prev, 0, sizeof (ev_statdata));
		1801	memset (&w->attr, 0, sizeof (ev_statdata));
		1802
		1803	ev_stat_stat (EV_A_ w);
		1804
		1805	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1806	ev_set_priority (&w->timer, ev_priority (w));
		1807	ev_timer_start (EV_A_ &w->timer);
		1808
		1809	ev_start (EV_A_ (W)w, 1);
		1810	}
		1811
		1812	void
		1813	ev_stat_stop (EV_P_ ev_stat *w)
		1814	{
		1815	ev_clear_pending (EV_A_ (W)w);
		1816	if (expect_false (!ev_is_active (w)))
		1817	return;
		1818
		1819	ev_timer_stop (EV_A_ &w->timer);
		1820
		1821	ev_stop (EV_A_ (W)w);
		1822	}
		1823	#endif
		1824
1429	/*****************************************************************************/	1825	/*****************************************************************************/
1430		1826
1431	struct ev_once	1827	struct ev_once
1432	{	1828	{
1433	struct ev_io io;	1829	ev_io io;
1434	struct ev_timer to;	1830	ev_timer to;
1435	void (cb)(int revents, void arg);	1831	void (cb)(int revents, void arg);
1436	void *arg;	1832	void *arg;
1437	};	1833	};
1438		1834
1439	static void	1835	static void
…		…
1448		1844
1449	cb (revents, arg);	1845	cb (revents, arg);
1450	}	1846	}
1451		1847
1452	static void	1848	static void
1453	once_cb_io (EV_P_ struct ev_io *w, int revents)	1849	once_cb_io (EV_P_ ev_io *w, int revents)
1454	{	1850	{
1455	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1456	}	1852	}
1457		1853
1458	static void	1854	static void
1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1855	once_cb_to (EV_P_ ev_timer *w, int revents)
1460	{	1856	{
1461	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1857	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1462	}	1858	}
1463		1859
1464	void	1860	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1861	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1466	{	1862	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1863	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1468		1864
1469	if (!once)	1865	if (expect_false (!once))
		1866	{
1470	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1867	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1471	else	1868	return;
1472	{	1869	}
		1870
1473	once->cb = cb;	1871	once->cb = cb;
1474	once->arg = arg;	1872	once->arg = arg;
1475		1873
1476	ev_watcher_init (&once->io, once_cb_io);	1874	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1875	if (fd >= 0)
1478	{	1876	{
1479	ev_io_set (&once->io, fd, events);	1877	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1878	ev_io_start (EV_A_ &once->io);
1481	}	1879	}
1482		1880
1483	ev_watcher_init (&once->to, once_cb_to);	1881	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1882	if (timeout >= 0.)
1485	{	1883	{
1486	ev_timer_set (&once->to, timeout, 0.);	1884	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1885	ev_timer_start (EV_A_ &once->to);
1488	}
1489	}	1886	}
1490	}	1887	}
1491		1888
		1889	#ifdef __cplusplus
		1890	}
		1891	#endif
		1892

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Comparing libev/ev.c (file contents): Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs. Revision 1.142 by root, Tue Nov 27 06:19:08 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.142 by root, Tue Nov 27 06:19:08 2007 UTC