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

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	116	# include <sys/time.h>
74	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
135	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
136	#else	200	#else
137	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
138	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
139	#endif	205	#endif
140		206
141	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
143		209
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
147	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
150		219
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		221
153	#if WIN32	222	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	223	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	224	#endif
211		225
212	/*****************************************************************************/	226	/*****************************************************************************/
213		227
214	static void (syserr_cb)(const char msg);	228	static void (syserr_cb)(const char msg);
…		…
262	typedef struct	276	typedef struct
263	{	277	{
264	WL head;	278	WL head;
265	unsigned char events;	279	unsigned char events;
266	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
267	} ANFD;	284	} ANFD;
268		285
269	typedef struct	286	typedef struct
270	{	287	{
271	W w;	288	W w;
272	int events;	289	int events;
273	} ANPENDING;	290	} ANPENDING;
274		291
275	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
276		293
277	struct ev_loop	294	struct ev_loop
278	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	299	#include "ev_vars.h"
281	};
282	# undef VAR	300	#undef VAR
		301	};
283	# include "ev_wrap.h"	302	#include "ev_wrap.h"
		303
		304	static struct ev_loop default_loop_struct;
		305	struct ev_loop *ev_default_loop_ptr;
284		306
285	#else	307	#else
286		308
		309	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	311	#include "ev_vars.h"
289	# undef VAR	312	#undef VAR
		313
		314	static int ev_default_loop_ptr;
290		315
291	#endif	316	#endif
292		317
293	/*****************************************************************************/	318	/*****************************************************************************/
294		319
295	inline ev_tstamp	320	ev_tstamp noinline
296	ev_time (void)	321	ev_time (void)
297	{	322	{
298	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
299	struct timespec ts;	324	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
304	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
305	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
306	#endif	331	#endif
307	}	332	}
308		333
309	inline ev_tstamp	334	ev_tstamp inline_size
310	get_clock (void)	335	get_clock (void)
311	{	336	{
312	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
313	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
314	{	339	{
…		…
319	#endif	344	#endif
320		345
321	return ev_time ();	346	return ev_time ();
322	}	347	}
323		348
		349	#if EV_MULTIPLICITY
324	ev_tstamp	350	ev_tstamp
325	ev_now (EV_P)	351	ev_now (EV_P)
326	{	352	{
327	return rt_now;	353	return ev_rt_now;
328	}	354	}
		355	#endif
329		356
330	#define array_roundsize(base,n) ((n) \| 4 & ~3)	357	#define array_roundsize(type,n) (((n) \| 4) & ~3)
331		358
332	#define array_needsize(base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
334	{ \	361	{ \
335	int newcnt = cur; \	362	int newcnt = cur; \
336	do \	363	do \
337	{ \	364	{ \
338	newcnt = array_roundsize (base, newcnt << 1); \	365	newcnt = array_roundsize (type, newcnt << 1); \
339	} \	366	} \
340	while ((cnt) > newcnt); \	367	while ((cnt) > newcnt); \
341	\	368	\
342	base = ev_realloc (base, sizeof (base) (newcnt)); \	369	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
343	init (base + cur, newcnt - cur); \	370	init (base + cur, newcnt - cur); \
344	cur = newcnt; \	371	cur = newcnt; \
345	}	372	}
346		373
347	#define array_slim(stem) \	374	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	376	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (base) (stem ## max)); \	378	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
353	}	380	}
354
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		381
360	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
362		384
363	/*****************************************************************************/	385	/*****************************************************************************/
364		386
365	static void	387	void inline_size
366	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
367	{	389	{
368	while (count--)	390	while (count--)
369	{	391	{
370	base->head = 0;	392	base->head = 0;
…		…
373		395
374	++base;	396	++base;
375	}	397	}
376	}	398	}
377		399
378	static void	400	void noinline
379	event (EV_P_ W w, int events)	401	ev_feed_event (EV_P_ void *w, int revents)
380	{	402	{
381	if (w->pending)	403	W w_ = (W)w;
		404
		405	if (expect_false (w_->pending))
382	{	406	{
383	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
384	return;	408	return;
385	}	409	}
386		410
387	w->pending = ++pendingcnt [ABSPRI (w)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
389	pendings [ABSPRI (w)][w->pending - 1].w = w;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
391	}	415	}
392		416
393	static void	417	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)	418	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{	419	{
396	int i;	420	int i;
397		421
398	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
400	}	424	}
401		425
402	static void	426	void inline_speed
403	fd_event (EV_P_ int fd, int events)	427	fd_event (EV_P_ int fd, int revents)
404	{	428	{
405	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	430	ev_io *w;
407		431
408	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	432	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
409	{	433	{
410	int ev = w->events & events;	434	int ev = w->events & revents;
411		435
412	if (ev)	436	if (ev)
413	event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
414	}	438	}
		439	}
		440
		441	void
		442	ev_feed_fd_event (EV_P_ int fd, int revents)
		443	{
		444	fd_event (EV_A_ fd, revents);
415	}	445	}
416		446
417	/*****************************************************************************/	447	/*****************************************************************************/
418		448
419	static void	449	void inline_size
420	fd_reify (EV_P)	450	fd_reify (EV_P)
421	{	451	{
422	int i;	452	int i;
423		453
424	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
425	{	455	{
426	int fd = fdchanges [i];	456	int fd = fdchanges [i];
427	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
428	struct ev_io *w;	458	ev_io *w;
429		459
430	int events = 0;	460	int events = 0;
431		461
432	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	462	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
433	events \|= w->events;	463	events \|= w->events;
434		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
435	anfd->reify = 0;	474	anfd->reify = 0;
436		475
437	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	477	anfd->events = events;
439	}	478	}
440		479
441	fdchangecnt = 0;	480	fdchangecnt = 0;
442	}	481	}
443		482
444	static void	483	void inline_size
445	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
446	{	485	{
447	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
448	return;	487	return;
449		488
450	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
451		490
452	++fdchangecnt;	491	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
455	}	494	}
456		495
457	static void	496	void inline_speed
458	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
459	{	498	{
460	struct ev_io *w;	499	ev_io *w;
461		500
462	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
463	{	502	{
464	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
465	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
466	}	505	}
467	}	506	}
468		507
469	static int	508	int inline_size
470	fd_valid (int fd)	509	fd_valid (int fd)
471	{	510	{
472	#ifdef WIN32	511	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
474	#else	513	#else
475	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
476	#endif	515	#endif
477	}	516	}
478		517
479	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
480	static void	519	static void noinline
481	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
482	{	521	{
483	int fd;	522	int fd;
484		523
485	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
487	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
488	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
489	}	528	}
490		529
491	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
492	static void	531	static void noinline
493	fd_enomem (EV_P)	532	fd_enomem (EV_P)
494	{	533	{
495	int fd;	534	int fd;
496		535
497	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
500	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
501	return;	540	return;
502	}	541	}
503	}	542	}
504		543
505	/* usually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
506	static void	545	static void noinline
507	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
508	{	547	{
509	int fd;	548	int fd;
510		549
511	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
517	}	556	}
518	}	557	}
519		558
520	/*****************************************************************************/	559	/*****************************************************************************/
521		560
522	static void	561	void inline_speed
523	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
524	{	563	{
525	WT w = heap [k];	564	WT w = heap [k];
526		565
527	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
534	heap [k] = w;	573	heap [k] = w;
535	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
536		575
537	}	576	}
538		577
539	static void	578	void inline_speed
540	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
541	{	580	{
542	WT w = heap [k];	581	WT w = heap [k];
543		582
544	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
558		597
559	heap [k] = w;	598	heap [k] = w;
560	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
561	}	600	}
562		601
		602	void inline_size
		603	adjustheap (WT *heap, int N, int k)
		604	{
		605	upheap (heap, k);
		606	downheap (heap, N, k);
		607	}
		608
563	/*****************************************************************************/	609	/*****************************************************************************/
564		610
565	typedef struct	611	typedef struct
566	{	612	{
567	WL head;	613	WL head;
…		…
571	static ANSIG *signals;	617	static ANSIG *signals;
572	static int signalmax;	618	static int signalmax;
573		619
574	static int sigpipe [2];	620	static int sigpipe [2];
575	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
576	static struct ev_io sigev;	622	static ev_io sigev;
577		623
578	static void	624	void inline_size
579	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
580	{	626	{
581	while (count--)	627	while (count--)
582	{	628	{
583	base->head = 0;	629	base->head = 0;
…		…
588	}	634	}
589		635
590	static void	636	static void
591	sighandler (int signum)	637	sighandler (int signum)
592	{	638	{
593	#if WIN32	639	#if _WIN32
594	signal (signum, sighandler);	640	signal (signum, sighandler);
595	#endif	641	#endif
596		642
597	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
598		644
…		…
603	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	650	errno = old_errno;
605	}	651	}
606	}	652	}
607		653
		654	void noinline
		655	ev_feed_signal_event (EV_P_ int signum)
		656	{
		657	WL w;
		658
		659	#if EV_MULTIPLICITY
		660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		661	#endif
		662
		663	--signum;
		664
		665	if (signum < 0 \|\| signum >= signalmax)
		666	return;
		667
		668	signals [signum].gotsig = 0;
		669
		670	for (w = signals [signum].head; w; w = w->next)
		671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		672	}
		673
608	static void	674	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
610	{	676	{
611	WL w;
612	int signum;	677	int signum;
613		678
614	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	680	gotsig = 0;
616		681
617	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
619	{	684	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;
621
622	for (w = signals [signum].head; w; w = w->next)
623	event (EV_A_ (W)w, EV_SIGNAL);
624	}
625	}	685	}
626		686
627	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
628	siginit (EV_P)	700	siginit (EV_P)
629	{	701	{
630	#ifndef WIN32	702	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		704
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	708	}
643		709
644	/*****************************************************************************/	710	/*****************************************************************************/
645		711
646	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
647		713
648	#ifndef WIN32	714	#ifndef _WIN32
649		715
650	static struct ev_signal childev;	716	static ev_signal childev;
651		717
652	#ifndef WCONTINUED	718	#ifndef WCONTINUED
653	# define WCONTINUED 0	719	# define WCONTINUED 0
654	#endif	720	#endif
655		721
656	static void	722	void inline_speed
657	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658	{	724	{
659	struct ev_child *w;	725	ev_child *w;
660		726
661	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	727	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
662	if (w->pid == pid \|\| !w->pid)	728	if (w->pid == pid \|\| !w->pid)
663	{	729	{
664	ev_priority (w) = ev_priority (sw); /* need to do it now */	730	ev_priority (w) = ev_priority (sw); /* need to do it now */
665	w->rpid = pid;	731	w->rpid = pid;
666	w->rstatus = status;	732	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	734	}
669	}	735	}
670		736
671	static void	737	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
673	{	739	{
674	int pid, status;	740	int pid, status;
675		741
676	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
677	{	743	{
678	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		747
681	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}	750	}
684	}	751	}
685		752
686	#endif	753	#endif
687		754
688	/*****************************************************************************/	755	/*****************************************************************************/
689		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
690	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
692	#endif	762	#endif
693	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
711	{	781	{
712	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
713	}	783	}
714		784
715	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	786	int inline_size
717	enable_secure (void)	787	enable_secure (void)
718	{	788	{
719	#ifdef WIN32	789	#ifdef _WIN32
720	return 0;	790	return 0;
721	#else	791	#else
722	return getuid () != geteuid ()	792	return getuid () != geteuid ()
723	\|\| getgid () != getegid ();	793	\|\| getgid () != getegid ();
724	#endif	794	#endif
725	}	795	}
726		796
727	int	797	unsigned int
728	ev_method (EV_P)	798	ev_supported_backends (void)
729	{	799	{
730	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	\| EVBACKEND_KQUEUE
		834	\| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
731	}	841	}
732		842
733	static void	843	static void
734	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
735	{	845	{
736	if (!method)	846	if (!backend)
737	{	847	{
738	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
739	{	849	{
740	struct timespec ts;	850	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	852	have_monotonic = 1;
743	}	853	}
744	#endif	854	#endif
745		855
746	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	857	mn_now = get_clock ();
748	now_floor = mn_now;	858	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
750		860
751	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		865
757	method = 0;	866	if (!(flags & 0x0000ffffUL))
758	#if EV_USE_WIN32	867	flags \|= ev_recommended_backends ();
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	872	#endif
761	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	875	#endif
764	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	878	#endif
767	#if EV_USE_POLL	879	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	881	#endif
770	#if EV_USE_SELECT	882	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	884	#endif
773		885
774	ev_watcher_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
776	}	888	}
777	}	889	}
778		890
779	void	891	static void
780	loop_destroy (EV_P)	892	loop_destroy (EV_P)
781	{	893	{
782	int i;	894	int i;
783		895
784	#if EV_USE_WIN32	896	#if EV_USE_PORT
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	898	#endif
787	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	901	#endif
790	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	904	#endif
793	#if EV_USE_POLL	905	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	907	#endif
796	#if EV_USE_SELECT	908	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	910	#endif
799		911
800	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	913	array_free (pending, [i]);
802		914
803	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	918	#if EV_PERIODIC_ENABLE
807	array_free_microshit (idle);	919	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	920	#endif
809	array_free_microshit (check);	921	array_free (idle, EMPTY0);
		922	array_free (prepare, EMPTY0);
		923	array_free (check, EMPTY0);
810		924
811	method = 0;	925	backend = 0;
812	}	926	}
813		927
814	static void	928	static void
815	loop_fork (EV_P)	929	loop_fork (EV_P)
816	{	930	{
		931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
817	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif
820	#if EV_USE_KQUEUE
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
822	#endif	939	#endif
823		940
824	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
825	{	942	{
826	/* default loop */	943	/* default loop */
…		…
828	ev_ref (EV_A);	945	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	946	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	947	close (sigpipe [0]);
831	close (sigpipe [1]);	948	close (sigpipe [1]);
832		949
833	while (ev_pipe (sigpipe))	950	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	951	syserr ("(libev) error creating pipe");
835		952
836	siginit (EV_A);	953	siginit (EV_A);
837	}	954	}
838		955
839	postfork = 0;	956	postfork = 0;
840	}	957	}
841		958
842	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
843	struct ev_loop *	960	struct ev_loop *
844	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
845	{	962	{
846	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	963	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
847		964
848	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
849		966
850	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
851		968
852	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
853	return loop;	970	return loop;
854		971
855	return 0;	972	return 0;
856	}	973	}
857		974
…		…
869	}	986	}
870		987
871	#endif	988	#endif
872		989
873	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
878	#else	993	#else
879	static int default_loop;
880
881	int	994	int
		995	ev_default_loop (unsigned int flags)
882	#endif	996	#endif
883	ev_default_loop (int methods)
884	{	997	{
885	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	999	if (pipe (sigpipe))
887	return 0;	1000	return 0;
888		1001
889	if (!default_loop)	1002	if (!ev_default_loop_ptr)
890	{	1003	{
891	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1006	#else
894	default_loop = 1;	1007	ev_default_loop_ptr = 1;
895	#endif	1008	#endif
896		1009
897	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
898		1011
899	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
900	{	1013	{
901	siginit (EV_A);	1014	siginit (EV_A);
902		1015
903	#ifndef WIN32	1016	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1021	#endif
909	}	1022	}
910	else	1023	else
911	default_loop = 0;	1024	ev_default_loop_ptr = 0;
912	}	1025	}
913		1026
914	return default_loop;	1027	return ev_default_loop_ptr;
915	}	1028	}
916		1029
917	void	1030	void
918	ev_default_destroy (void)	1031	ev_default_destroy (void)
919	{	1032	{
920	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1035	#endif
923		1036
924	#ifndef WIN32	1037	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
927	#endif	1040	#endif
928		1041
929	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
937		1050
938	void	1051	void
939	ev_default_fork (void)	1052	ev_default_fork (void)
940	{	1053	{
941	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1056	#endif
944		1057
945	if (method)	1058	if (backend)
946	postfork = 1;	1059	postfork = 1;
947	}	1060	}
948		1061
949	/*****************************************************************************/	1062	/*****************************************************************************/
950		1063
951	static void	1064	int inline_size
		1065	any_pending (EV_P)
		1066	{
		1067	int pri;
		1068
		1069	for (pri = NUMPRI; pri--; )
		1070	if (pendingcnt [pri])
		1071	return 1;
		1072
		1073	return 0;
		1074	}
		1075
		1076	void inline_speed
952	call_pending (EV_P)	1077	call_pending (EV_P)
953	{	1078	{
954	int pri;	1079	int pri;
955		1080
956	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
958	{	1083	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1085
961	if (p->w)	1086	if (expect_true (p->w))
962	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
963	p->w->pending = 0;	1090	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
965	}	1092	}
966	}	1093	}
967	}	1094	}
968		1095
969	static void	1096	void inline_size
970	timers_reify (EV_P)	1097	timers_reify (EV_P)
971	{	1098	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1100	{
974	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
975		1102
976	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
977		1104
978	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
979	if (w->repeat)	1106	if (w->repeat)
980	{	1107	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
982	((WT)w)->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
983	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
984	}	1115	}
985	else	1116	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1118
988	event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1120	}
990	}	1121	}
991		1122
992	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
993	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
994	{	1126	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1128	{
997	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
998		1130
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1000		1132
1001	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
1002	if (w->interval)	1134	if (w->reschedule_cb)
1003	{	1135	{
		1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1138	downheap ((WT *)periodics, periodiccnt, 0);
		1139	}
		1140	else if (w->interval)
		1141	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1145	}
1008	else	1146	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1148
1011	event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1150	}
1013	}	1151	}
1014		1152
1015	static void	1153	static void noinline
1016	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
1017	{	1155	{
1018	int i;	1156	int i;
1019		1157
1020	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
1022	{	1160	{
1023	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
1024		1162
		1163	if (w->reschedule_cb)
		1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1165	else if (w->interval)
1026	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1028
1029	if (fabs (diff) >= 1e-4)
1030	{
1031	ev_periodic_stop (EV_A_ w);
1032	ev_periodic_start (EV_A_ w);
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}
1036	}
1037	}	1167	}
1038	}
1039		1168
1040	inline int	1169	/* now rebuild the heap */
		1170	for (i = periodiccnt >> 1; i--; )
		1171	downheap ((WT *)periodics, periodiccnt, i);
		1172	}
		1173	#endif
		1174
		1175	int inline_size
1041	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
1042	{	1177	{
1043	mn_now = get_clock ();	1178	mn_now = get_clock ();
1044		1179
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1181	{
1047	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1183	return 0;
1049	}	1184	}
1050	else	1185	else
1051	{	1186	{
1052	now_floor = mn_now;	1187	now_floor = mn_now;
1053	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
1054	return 1;	1189	return 1;
1055	}	1190	}
1056	}	1191	}
1057		1192
1058	static void	1193	void inline_size
1059	time_update (EV_P)	1194	time_update (EV_P)
1060	{	1195	{
1061	int i;	1196	int i;
1062		1197
1063	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1065	{	1200	{
1066	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1067	{	1202	{
1068	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1069		1204
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
1071	{	1214	{
1072	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1073		1216
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1218	return; /* all is well */
1076		1219
1077	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1221	mn_now = get_clock ();
1079	now_floor = mn_now;	1222	now_floor = mn_now;
1080	}	1223	}
1081		1224
		1225	# if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1230	}
1086	}	1231	}
1087	else	1232	else
1088	#endif	1233	#endif
1089	{	1234	{
1090	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1091		1236
1092	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
1094	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
1095		1242
1096	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1246	}
1100		1247
1101	mn_now = rt_now;	1248	mn_now = ev_rt_now;
1102	}	1249	}
1103	}	1250	}
1104		1251
1105	void	1252	void
1106	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
1117	static int loop_done;	1264	static int loop_done;
1118		1265
1119	void	1266	void
1120	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1121	{	1268	{
1122	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1124		1272
1125	do	1273	while (activecnt)
1126	{	1274	{
1127	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1129	{	1277	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1137		1285
1138	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1287	fd_reify (EV_A);
1140		1288
1141	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1142		1292
1143	/* we only need this for !monotonic clockor timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1144	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
1145	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1148	else	1301	else
1149	#endif	1302	#endif
1150	{	1303	{
1151	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1305	mn_now = ev_rt_now;
1153	}	1306	}
1154		1307
1155	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1156	block = 0.;
1157	else
1158	{
1159	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1160		1309
1161	if (timercnt)	1310	if (timercnt)
1162	{	1311	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1313	if (block > to) block = to;
1165	}	1314	}
1166		1315
		1316	#if EV_PERIODIC_ENABLE
1167	if (periodiccnt)	1317	if (periodiccnt)
1168	{	1318	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1320	if (block > to) block = to;
1171	}	1321	}
		1322	#endif
1172		1323
1173	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1174	}	1325	}
1175		1326
1176	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1177		1329
1178	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1331	time_update (EV_A);
1180		1332
1181	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1183	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1184		1338
1185	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1186	if (!pendingcnt)	1340	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1342
1189	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1344	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1346
1193	call_pending (EV_A);	1347	call_pending (EV_A);
1194	}
1195	while (activecnt && !loop_done);
1196		1348
1197	if (loop_done != 2)	1349	if (expect_false (loop_done))
1198	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1199	}	1355	}
1200		1356
1201	void	1357	void
1202	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1203	{	1359	{
1204	loop_done = how;	1360	loop_done = how;
1205	}	1361	}
1206		1362
1207	/*****************************************************************************/	1363	/*****************************************************************************/
1208		1364
1209	inline void	1365	void inline_size
1210	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1211	{	1367	{
1212	elem->next = *head;	1368	elem->next = *head;
1213	*head = elem;	1369	*head = elem;
1214	}	1370	}
1215		1371
1216	inline void	1372	void inline_size
1217	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1218	{	1374	{
1219	while (*head)	1375	while (*head)
1220	{	1376	{
1221	if (*head == elem)	1377	if (*head == elem)
…		…
1226		1382
1227	head = &(*head)->next;	1383	head = &(*head)->next;
1228	}	1384	}
1229	}	1385	}
1230		1386
1231	inline void	1387	void inline_speed
1232	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1233	{	1389	{
1234	if (w->pending)	1390	if (w->pending)
1235	{	1391	{
1236	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237	w->pending = 0;	1393	w->pending = 0;
1238	}	1394	}
1239	}	1395	}
1240		1396
1241	inline void	1397	void inline_speed
1242	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1243	{	1399	{
1244	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246		1402
1247	w->active = active;	1403	w->active = active;
1248	ev_ref (EV_A);	1404	ev_ref (EV_A);
1249	}	1405	}
1250		1406
1251	inline void	1407	void inline_size
1252	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1253	{	1409	{
1254	ev_unref (EV_A);	1410	ev_unref (EV_A);
1255	w->active = 0;	1411	w->active = 0;
1256	}	1412	}
1257		1413
1258	/*****************************************************************************/	1414	/*****************************************************************************/
1259		1415
1260	void	1416	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1262	{	1418	{
1263	int fd = w->fd;	1419	int fd = w->fd;
1264		1420
1265	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1266	return;	1422	return;
1267		1423
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1425
1270	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1429
1274	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1275	}	1431	}
1276		1432
1277	void	1433	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1279	{	1435	{
1280	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1282	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1441
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1286		1444
1287	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1288	}	1446	}
1289		1447
1290	void	1448	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1292	{	1450	{
1293	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1294	return;	1452	return;
1295		1453
1296	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1297		1455
1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299		1457
1300	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1304		1462
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}	1464	}
1307		1465
1308	void	1466	void
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1310	{	1468	{
1311	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1313	return;	1471	return;
1314		1472
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1316		1474
1317	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1318	{	1476	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1321	}	1479	}
1322		1480
1323	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1324		1482
1325	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1326	}	1484	}
1327		1485
1328	void	1486	void
1329	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1330	{	1488	{
1331	if (ev_is_active (w))	1489	if (ev_is_active (w))
1332	{	1490	{
1333	if (w->repeat)	1491	if (w->repeat)
1334	{	1492	{
1335	((WT)w)->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1495	}
1338	else	1496	else
1339	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1340	}	1498	}
1341	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1343	}	1504	}
1344		1505
		1506	#if EV_PERIODIC_ENABLE
1345	void	1507	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1347	{	1509	{
1348	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1349	return;	1511	return;
1350		1512
		1513	if (w->reschedule_cb)
		1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1515	else if (w->interval)
		1516	{
1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1354	if (w->interval)
1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1520	}
1356		1521
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1361		1526
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}	1528	}
1364		1529
1365	void	1530	void
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1367	{	1532	{
1368	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1370	return;	1535	return;
1371		1536
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1373		1538
1374	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1375	{	1540	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1378	}	1543	}
1379		1544
1380	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1381	}	1546	}
1382		1547
1383	void	1548	void
		1549	ev_periodic_again (EV_P_ ev_periodic *w)
		1550	{
		1551	/* TODO: use adjustheap and recalculation */
		1552	ev_periodic_stop (EV_A_ w);
		1553	ev_periodic_start (EV_A_ w);
		1554	}
		1555	#endif
		1556
		1557	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1385	{	1559	{
1386	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1387	return;	1561	return;
1388		1562
1389	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1391	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1392	}	1566	}
1393		1567
1394	void	1568	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1396	{	1570	{
1397	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1399	return;	1573	return;
1400		1574
		1575	{
		1576	int active = ((W)w)->active;
1401	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1402	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1403	}	1582	}
1404		1583
1405	void	1584	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1407	{	1586	{
1408	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1409	return;	1588	return;
1410		1589
1411	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1413	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1414	}	1593	}
1415		1594
1416	void	1595	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1418	{	1597	{
1419	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1421	return;	1600	return;
1422		1601
		1602	{
		1603	int active = ((W)w)->active;
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1424	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1425	}	1609	}
1426		1610
1427	void	1611	void
1428	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1429	{	1613	{
1430	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1431	return;	1615	return;
1432		1616
1433	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1435	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1436	}	1620	}
1437		1621
1438	void	1622	void
1439	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1440	{	1624	{
1441	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1443	return;	1627	return;
1444		1628
		1629	{
		1630	int active = ((W)w)->active;
1445	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1446	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1447	}	1636	}
1448		1637
1449	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1450	# define SA_RESTART 0	1639	# define SA_RESTART 0
1451	#endif	1640	#endif
1452		1641
1453	void	1642	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1455	{	1644	{
1456	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458	#endif	1647	#endif
1459	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1460	return;	1649	return;
1461		1650
1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463		1652
1464	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1656
1468	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1469	{	1658	{
1470	#if WIN32	1659	#if _WIN32
1471	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1472	#else	1661	#else
1473	struct sigaction sa;	1662	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1478	#endif	1667	#endif
1479	}	1668	}
1480	}	1669	}
1481		1670
1482	void	1671	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1484	{	1673	{
1485	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1487	return;	1676	return;
1488		1677
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1491		1680
1492	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1493	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1494	}	1683	}
1495		1684
1496	void	1685	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1498	{	1687	{
1499	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1500	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501	#endif	1690	#endif
1502	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1503	return;	1692	return;
1504		1693
1505	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1507	}	1696	}
1508		1697
1509	void	1698	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1511	{	1700	{
1512	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1514	return;	1703	return;
1515		1704
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1518	}	1707	}
1519		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1520	/*****************************************************************************/	1819	/*****************************************************************************/
1521		1820
1522	struct ev_once	1821	struct ev_once
1523	{	1822	{
1524	struct ev_io io;	1823	ev_io io;
1525	struct ev_timer to;	1824	ev_timer to;
1526	void (cb)(int revents, void arg);	1825	void (cb)(int revents, void arg);
1527	void *arg;	1826	void *arg;
1528	};	1827	};
1529		1828
1530	static void	1829	static void
…		…
1539		1838
1540	cb (revents, arg);	1839	cb (revents, arg);
1541	}	1840	}
1542		1841
1543	static void	1842	static void
1544	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1545	{	1844	{
1546	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1547	}	1846	}
1548		1847
1549	static void	1848	static void
1550	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1551	{	1850	{
1552	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1553	}	1852	}
1554		1853
1555	void	1854	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1557	{	1856	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1857	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1559		1858
1560	if (!once)	1859	if (expect_false (!once))
		1860	{
1561	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1861	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1562	else	1862	return;
1563	{	1863	}
		1864
1564	once->cb = cb;	1865	once->cb = cb;
1565	once->arg = arg;	1866	once->arg = arg;
1566		1867
1567	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	1869	if (fd >= 0)
1569	{	1870	{
1570	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1572	}	1873	}
1573		1874
1574	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	1876	if (timeout >= 0.)
1576	{	1877	{
1577	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	1880	}
1581	}	1881	}
1582		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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Comparing libev/ev.c (file contents): Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs. Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC