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

Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 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_REALTIME	157	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
99	#endif	159	#endif
100		160
101	/**/	161	/**/
102		162
103	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
111	#endif	171	#endif
112		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
113	/**/	177	/**/
114		178
115	#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) */
116	#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) */
117	#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 */
118	/#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 */
119		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
120	#include "ev.h"	187	# include "ev.h"
		188	#endif
121		189
122	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
123	# 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
124	# 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
125	#else	200	#else
126	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
127	# define inline static	203	# define inline_size static
		204	# define noinline
128	#endif	205	#endif
129		206
130	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
132		209
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
135		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
136	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
139		219
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		221
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
142	/*****************************************************************************/	226	/*****************************************************************************/
143		227
		228	static void (syserr_cb)(const char msg);
		229
		230	void
		231	ev_set_syserr_cb (void (cb)(const char msg))
		232	{
		233	syserr_cb = cb;
		234	}
		235
		236	static void noinline
		237	syserr (const char *msg)
		238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
		242	if (syserr_cb)
		243	syserr_cb (msg);
		244	else
		245	{
		246	perror (msg);
		247	abort ();
		248	}
		249	}
		250
		251	static void (alloc)(void *ptr, long size);
		252
		253	void
		254	ev_set_allocator (void (cb)(void *ptr, long size))
		255	{
		256	alloc = cb;
		257	}
		258
		259	static void *
		260	ev_realloc (void *ptr, long size)
		261	{
		262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		263
		264	if (!ptr && size)
		265	{
		266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		267	abort ();
		268	}
		269
		270	return ptr;
		271	}
		272
		273	#define ev_malloc(size) ev_realloc (0, (size))
		274	#define ev_free(ptr) ev_realloc ((ptr), 0)
		275
		276	/*****************************************************************************/
		277
144	typedef struct	278	typedef struct
145	{	279	{
146	struct ev_watcher_list *head;	280	WL head;
147	unsigned char events;	281	unsigned char events;
148	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
149	} ANFD;	286	} ANFD;
150		287
151	typedef struct	288	typedef struct
152	{	289	{
153	W w;	290	W w;
154	int events;	291	int events;
155	} ANPENDING;	292	} ANPENDING;
156		293
157	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
158		295
159	struct ev_loop	296	struct ev_loop
160	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	301	#include "ev_vars.h"
163	};
164	# undef VAR	302	#undef VAR
		303	};
165	# 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;
166		308
167	#else	309	#else
168		310
		311	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	313	#include "ev_vars.h"
171	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
172		317
173	#endif	318	#endif
174		319
175	/*****************************************************************************/	320	/*****************************************************************************/
176		321
177	inline ev_tstamp	322	ev_tstamp
178	ev_time (void)	323	ev_time (void)
179	{	324	{
180	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
181	struct timespec ts;	326	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	333	#endif
189	}	334	}
190		335
191	inline ev_tstamp	336	ev_tstamp inline_size
192	get_clock (void)	337	get_clock (void)
193	{	338	{
194	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
196	{	341	{
…		…
201	#endif	346	#endif
202		347
203	return ev_time ();	348	return ev_time ();
204	}	349	}
205		350
		351	#if EV_MULTIPLICITY
206	ev_tstamp	352	ev_tstamp
207	ev_now (EV_P)	353	ev_now (EV_P)
208	{	354	{
209	return rt_now;	355	return ev_rt_now;
210	}	356	}
		357	#endif
211		358
212	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
213		360
214	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
216	{ \	363	{ \
217	int newcnt = cur; \	364	int newcnt = cur; \
218	do \	365	do \
219	{ \	366	{ \
220	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
221	} \	368	} \
222	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
223	\	370	\
224	base = realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
225	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
226	cur = newcnt; \	373	cur = newcnt; \
227	}	374	}
		375
		376	#define array_slim(type,stem) \
		377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		378	{ \
		379	stem ## max = array_roundsize (stem ## cnt >> 1); \
		380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		382	}
		383
		384	#define array_free(stem, idx) \
		385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
228		386
229	/*****************************************************************************/	387	/*****************************************************************************/
230		388
231	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
232	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
233	{	419	{
234	while (count--)	420	while (count--)
235	{	421	{
236	base->head = 0;	422	base->head = 0;
…		…
239		425
240	++base;	426	++base;
241	}	427	}
242	}	428	}
243		429
244	static void	430	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
270	{	432	{
271	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	434	ev_io *w;
273		435
274	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)
275	{	437	{
276	int ev = w->events & events;	438	int ev = w->events & revents;
277		439
278	if (ev)	440	if (ev)
279	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
280	}	442	}
281	}	443	}
282		444
283	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
284		450
285	static void	451	void inline_size
286	fd_reify (EV_P)	452	fd_reify (EV_P)
287	{	453	{
288	int i;	454	int i;
289		455
290	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
291	{	457	{
292	int fd = fdchanges [i];	458	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	460	ev_io *w;
295		461
296	int events = 0;	462	int events = 0;
297		463
298	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)
299	events \|= w->events;	465	events \|= w->events;
300		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
301	anfd->reify = 0;	476	anfd->reify = 0;
302		477
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	479	anfd->events = events;
307	}
308	}	480	}
309		481
310	fdchangecnt = 0;	482	fdchangecnt = 0;
311	}	483	}
312		484
313	static void	485	void inline_size
314	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
315	{	487	{
316	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
317	return;	489	return;
318		490
319	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
320		492
321	++fdchangecnt;	493	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
324	}	496	}
325		497
326	static void	498	void inline_speed
327	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
328	{	500	{
329	struct ev_io *w;	501	ev_io *w;
330		502
331	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
332	{	504	{
333	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
334	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);
335	}	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
336	}	518	}
337		519
338	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
339	static void	521	static void noinline
340	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
341	{	523	{
342	int fd;	524	int fd;
343		525
344	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	527	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
348	}	530	}
349		531
350	/* 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 */
351	static void	533	static void noinline
352	fd_enomem (EV_P)	534	fd_enomem (EV_P)
353	{	535	{
354	int fd = anfdmax;	536	int fd;
355		537
356	while (fd--)	538	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	539	if (anfds [fd].events)
358	{	540	{
359	close (fd);
360	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
361	return;	542	return;
362	}	543	}
363	}	544	}
364		545
365	/* 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 */
366	static void	547	static void noinline
367	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
368	{	549	{
369	int fd;	550	int fd;
370		551
371	/* 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 */
…		…
377	}	558	}
378	}	559	}
379		560
380	/*****************************************************************************/	561	/*****************************************************************************/
381		562
382	static void	563	void inline_speed
383	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
384	{	565	{
385	WT w = heap [k];	566	WT w = heap [k];
386		567
387	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
388	{	569	{
389	heap [k] = heap [k >> 1];	570	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	571	((W)heap [k])->active = k + 1;
391	k >>= 1;	572	k >>= 1;
392	}	573	}
393		574
394	heap [k] = w;	575	heap [k] = w;
395	heap [k]->active = k + 1;	576	((W)heap [k])->active = k + 1;
396		577
397	}	578	}
398		579
399	static void	580	void inline_speed
400	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
401	{	582	{
402	WT w = heap [k];	583	WT w = heap [k];
403		584
404	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
410		591
411	if (w->at <= heap [j]->at)	592	if (w->at <= heap [j]->at)
412	break;	593	break;
413		594
414	heap [k] = heap [j];	595	heap [k] = heap [j];
415	heap [k]->active = k + 1;	596	((W)heap [k])->active = k + 1;
416	k = j;	597	k = j;
417	}	598	}
418		599
419	heap [k] = w;	600	heap [k] = w;
420	heap [k]->active = k + 1;	601	((W)heap [k])->active = k + 1;
		602	}
		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
421	}	609	}
422		610
423	/*****************************************************************************/	611	/*****************************************************************************/
424		612
425	typedef struct	613	typedef struct
426	{	614	{
427	struct ev_watcher_list *head;	615	WL head;
428	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
429	} ANSIG;	617	} ANSIG;
430		618
431	static ANSIG *signals;	619	static ANSIG *signals;
432	static int signalmax;	620	static int signalmax;
433		621
434	static int sigpipe [2];	622	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	624	static ev_io sigev;
437		625
438	static void	626	void inline_size
439	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
440	{	628	{
441	while (count--)	629	while (count--)
442	{	630	{
443	base->head = 0;	631	base->head = 0;
…		…
448	}	636	}
449		637
450	static void	638	static void
451	sighandler (int signum)	639	sighandler (int signum)
452	{	640	{
		641	#if _WIN32
		642	signal (signum, sighandler);
		643	#endif
		644
453	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
454		646
455	if (!gotsig)	647	if (!gotsig)
456	{	648	{
457	int old_errno = errno;	649	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	652	errno = old_errno;
461	}	653	}
462	}	654	}
463		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
464	static void	676	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
466	{	678	{
467	struct ev_watcher_list *w;
468	int signum;	679	int signum;
469		680
470	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	682	gotsig = 0;
472		683
473	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
475	{	686	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	687	}
482		688
483	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
484	siginit (EV_P)	702	siginit (EV_P)
485	{	703	{
486	#ifndef WIN32	704	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		706
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	710	}
499		711
500	/*****************************************************************************/	712	/*****************************************************************************/
501		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
502	#ifndef WIN32	716	#ifndef _WIN32
503		717
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	718	static ev_signal childev;
		719
		720	void inline_speed
		721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		722	{
		723	ev_child *w;
		724
		725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		726	if (w->pid == pid \|\| !w->pid)
		727	{
		728	ev_priority (w) = ev_priority (sw); /* need to do it now */
		729	w->rpid = pid;
		730	w->rstatus = status;
		731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		732	}
		733	}
506		734
507	#ifndef WCONTINUED	735	#ifndef WCONTINUED
508	# define WCONTINUED 0	736	# define WCONTINUED 0
509	#endif	737	#endif
510		738
511	static void	739	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
517	if (w->pid == pid \|\| !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it now */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
528	{	741	{
529	int pid, status;	742	int pid, status;
530		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
532	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
533	/* 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 */
534	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		754
536	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
537	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 */
538	}
539	}	757	}
540		758
541	#endif	759	#endif
542		760
543	/*****************************************************************************/	761	/*****************************************************************************/
544		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
545	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
547	#endif	768	#endif
548	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
566	{	787	{
567	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
568	}	789	}
569		790
570	/* 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 */
571	static int	792	int inline_size
572	enable_secure (void)	793	enable_secure (void)
573	{	794	{
574	#ifdef WIN32	795	#ifdef _WIN32
575	return 0;	796	return 0;
576	#else	797	#else
577	return getuid () != geteuid ()	798	return getuid () != geteuid ()
578	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
579	#endif	800	#endif
580	}	801	}
581		802
582	int	803	unsigned int
583	ev_method (EV_P)	804	ev_supported_backends (void)
584	{	805	{
585	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;
586	}	847	}
587		848
588	static void	849	static void
589	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
590	{	851	{
591	if (!method)	852	if (!backend)
592	{	853	{
593	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
594	{	855	{
595	struct timespec ts;	856	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	858	have_monotonic = 1;
598	}	859	}
599	#endif	860	#endif
600		861
601	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	863	mn_now = get_clock ();
603	now_floor = mn_now;	864	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
605		866
606	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		871
612	method = 0;	872	if (!(flags & 0x0000ffffUL))
		873	flags \|= ev_recommended_backends ();
		874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		878	#endif
613	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	881	#endif
616	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	884	#endif
619	#if EV_USE_POLL	885	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	887	#endif
622	#if EV_USE_SELECT	888	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	890	#endif
625	}
626	}
627		891
628	void	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
629	loop_destroy (EV_P)	898	loop_destroy (EV_P)
630	{	899	{
		900	int i;
		901
		902	#if EV_USE_PORT
		903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		904	#endif
631	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	907	#endif
634	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	910	#endif
637	#if EV_USE_POLL	911	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	913	#endif
640	#if EV_USE_SELECT	914	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	916	#endif
643		917
644	method = 0;	918	for (i = NUMPRI; i--; )
645	/TODO/	919	array_free (pending, [i]);
646	}
647		920
648	void	921	/* have to use the microsoft-never-gets-it-right macro */
		922	array_free (fdchange, EMPTY0);
		923	array_free (timer, EMPTY0);
		924	#if EV_PERIODIC_ENABLE
		925	array_free (periodic, EMPTY0);
		926	#endif
		927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
		930
		931	backend = 0;
		932	}
		933
		934	static void
649	loop_fork (EV_P)	935	loop_fork (EV_P)
650	{	936	{
651	/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
652	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	945	#endif
655	#if EV_USE_KQUEUE	946
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	947	if (ev_is_active (&sigev))
657	#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;
658	}	963	}
659		964
660	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
661	struct ev_loop *	966	struct ev_loop *
662	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
663	{	968	{
664	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	969	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
665		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
666	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
667		974
668	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
669	return loop;	976	return loop;
670		977
671	return 0;	978	return 0;
672	}	979	}
673		980
674	void	981	void
675	ev_loop_destroy (EV_P)	982	ev_loop_destroy (EV_P)
676	{	983	{
677	loop_destroy (EV_A);	984	loop_destroy (EV_A);
678	free (loop);	985	ev_free (loop);
679	}	986	}
680		987
681	void	988	void
682	ev_loop_fork (EV_P)	989	ev_loop_fork (EV_P)
683	{	990	{
684	loop_fork (EV_A);	991	postfork = 1;
685	}	992	}
686		993
687	#endif	994	#endif
688		995
689	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
694	#else	999	#else
695	static int default_loop;
696
697	int	1000	int
		1001	ev_default_loop (unsigned int flags)
698	#endif	1002	#endif
699	ev_default_loop (int methods)
700	{	1003	{
701	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
703	return 0;	1006	return 0;
704		1007
705	if (!default_loop)	1008	if (!ev_default_loop_ptr)
706	{	1009	{
707	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1012	#else
710	default_loop = 1;	1013	ev_default_loop_ptr = 1;
711	#endif	1014	#endif
712		1015
713	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
714		1017
715	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
716	{	1019	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1020	siginit (EV_A);
720		1021
721	#ifndef WIN32	1022	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1027	#endif
727	}	1028	}
728	else	1029	else
729	default_loop = 0;	1030	ev_default_loop_ptr = 0;
730	}	1031	}
731		1032
732	return default_loop;	1033	return ev_default_loop_ptr;
733	}	1034	}
734		1035
735	void	1036	void
736	ev_default_destroy (void)	1037	ev_default_destroy (void)
737	{	1038	{
738	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1041	#endif
741		1042
		1043	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
744		1047
745	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1049	ev_io_stop (EV_A_ &sigev);
747		1050
748	close (sigpipe [0]); sigpipe [0] = 0;	1051	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1056
754	void	1057	void
755	ev_default_fork (void)	1058	ev_default_fork (void)
756	{	1059	{
757	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1062	#endif
760		1063
761	loop_fork (EV_A);	1064	if (backend)
762		1065	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1066	}
771		1067
772	/*****************************************************************************/	1068	/*****************************************************************************/
773		1069
774	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
775	call_pending (EV_P)	1083	call_pending (EV_P)
776	{	1084	{
777	int pri;	1085	int pri;
778		1086
779	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
781	{	1089	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1091
784	if (p->w)	1092	if (expect_true (p->w))
785	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
786	p->w->pending = 0;	1096	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
788	}	1098	}
789	}	1099	}
790	}	1100	}
791		1101
792	static void	1102	void inline_size
793	timers_reify (EV_P)	1103	timers_reify (EV_P)
794	{	1104	{
795	while (timercnt && timers [0]->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1106	{
797	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
798		1108
799	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
800		1110
801	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
802	if (w->repeat)	1112	if (w->repeat)
803	{	1113	{
804	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
805	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
806	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
807	}	1121	}
808	else	1122	else
809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
810		1124
811	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
812	}	1126	}
813	}	1127	}
814		1128
815	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
816	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
817	{	1132	{
818	while (periodiccnt && periodics [0]->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
819	{	1134	{
820	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
821		1136
822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
823		1138
824	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
825	if (w->interval)	1140	if (w->reschedule_cb)
826	{	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	{
827	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
829	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
830	}	1151	}
831	else	1152	else
832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
833		1154
834	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
835	}	1156	}
836	}	1157	}
837		1158
838	static void	1159	static void noinline
839	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
840	{	1161	{
841	int i;	1162	int i;
842		1163
843	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
844	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
845	{	1166	{
846	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
847		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
848	if (w->interval)	1171	else if (w->interval)
849	{
850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
851
852	if (fabs (diff) >= 1e-4)
853	{
854	ev_periodic_stop (EV_A_ w);
855	ev_periodic_start (EV_A_ w);
856
857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
858	}
859	}
860	}	1173	}
861	}
862		1174
863	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
864	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
865	{	1183	{
866	mn_now = get_clock ();	1184	mn_now = get_clock ();
867		1185
868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
869	{	1187	{
870	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
871	return 0;	1189	return 0;
872	}	1190	}
873	else	1191	else
874	{	1192	{
875	now_floor = mn_now;	1193	now_floor = mn_now;
876	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
877	return 1;	1195	return 1;
878	}	1196	}
879	}	1197	}
880		1198
881	static void	1199	void inline_size
882	time_update (EV_P)	1200	time_update (EV_P)
883	{	1201	{
884	int i;	1202	int i;
885		1203
886	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
888	{	1206	{
889	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
890	{	1208	{
891	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
892		1210
893	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; )
894	{	1220	{
895	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
896		1222
897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
898	return; /* all is well */	1224	return; /* all is well */
899		1225
900	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
901	mn_now = get_clock ();	1227	mn_now = get_clock ();
902	now_floor = mn_now;	1228	now_floor = mn_now;
903	}	1229	}
904		1230
		1231	# if EV_PERIODIC_ENABLE
905	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
906	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
908	}	1236	}
909	}	1237	}
910	else	1238	else
911	#endif	1239	#endif
912	{	1240	{
913	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
914		1242
915	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))
916	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
918		1248
919	/* 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 */
920	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
921	timers [i]->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
922	}	1252	}
923		1253
924	mn_now = rt_now;	1254	mn_now = ev_rt_now;
925	}	1255	}
926	}	1256	}
927		1257
928	void	1258	void
929	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
940	static int loop_done;	1270	static int loop_done;
941		1271
942	void	1272	void
943	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
944	{	1274	{
945	double block;
946	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
947		1278
948	do	1279	while (activecnt)
949	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	#if EV_FORK_ENABLE
		1283	if (expect_false (postfork))
		1284	if (forkcnt)
		1285	{
		1286	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1287	call_pending (EV_A);
		1288	}
		1289	#endif
		1290
950	/* queue check watchers (and execute them) */	1291	/* queue check watchers (and execute them) */
951	if (expect_false (preparecnt))	1292	if (expect_false (preparecnt))
952	{	1293	{
953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1294	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
954	call_pending (EV_A);	1295	call_pending (EV_A);
955	}	1296	}
956		1297
		1298	/* we might have forked, so reify kernel state if necessary */
		1299	if (expect_false (postfork))
		1300	loop_fork (EV_A);
		1301
957	/* update fd-related kernel structures */	1302	/* update fd-related kernel structures */
958	fd_reify (EV_A);	1303	fd_reify (EV_A);
959		1304
960	/* calculate blocking time */	1305	/* calculate blocking time */
		1306	{
		1307	double block;
961		1308
962	/* we only need this for !monotonic clockor timers, but as we basically	1309	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
963	always have timers, we just calculate it always */	1310	block = 0.; /* do not block at all */
		1311	else
		1312	{
		1313	/* update time to cancel out callback processing overhead */
964	#if EV_USE_MONOTONIC	1314	#if EV_USE_MONOTONIC
965	if (expect_true (have_monotonic))	1315	if (expect_true (have_monotonic))
966	time_update_monotonic (EV_A);	1316	time_update_monotonic (EV_A);
967	else	1317	else
968	#endif	1318	#endif
969	{	1319	{
970	rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
971	mn_now = rt_now;	1321	mn_now = ev_rt_now;
972	}	1322	}
973		1323
974	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
975	block = 0.;
976	else
977	{
978	block = MAX_BLOCKTIME;	1324	block = MAX_BLOCKTIME;
979		1325
980	if (timercnt)	1326	if (timercnt)
981	{	1327	{
982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1328	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
983	if (block > to) block = to;	1329	if (block > to) block = to;
984	}	1330	}
985		1331
		1332	#if EV_PERIODIC_ENABLE
986	if (periodiccnt)	1333	if (periodiccnt)
987	{	1334	{
988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1335	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
989	if (block > to) block = to;	1336	if (block > to) block = to;
990	}	1337	}
		1338	#endif
991		1339
992	if (block < 0.) block = 0.;	1340	if (expect_false (block < 0.)) block = 0.;
993	}	1341	}
994		1342
995	method_poll (EV_A_ block);	1343	backend_poll (EV_A_ block);
		1344	}
996		1345
997	/* update rt_now, do magic */	1346	/* update ev_rt_now, do magic */
998	time_update (EV_A);	1347	time_update (EV_A);
999		1348
1000	/* queue pending timers and reschedule them */	1349	/* queue pending timers and reschedule them */
1001	timers_reify (EV_A); /* relative timers called last */	1350	timers_reify (EV_A); /* relative timers called last */
		1351	#if EV_PERIODIC_ENABLE
1002	periodics_reify (EV_A); /* absolute timers called first */	1352	periodics_reify (EV_A); /* absolute timers called first */
		1353	#endif
1003		1354
1004	/* queue idle watchers unless io or timers are pending */	1355	/* queue idle watchers unless other events are pending */
1005	if (!pendingcnt)	1356	if (idlecnt && !any_pending (EV_A))
1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1357	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1007		1358
1008	/* queue check watchers, to be executed first */	1359	/* queue check watchers, to be executed first */
1009	if (checkcnt)	1360	if (expect_false (checkcnt))
1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1011		1362
1012	call_pending (EV_A);	1363	call_pending (EV_A);
1013	}
1014	while (activecnt && !loop_done);
1015		1364
1016	if (loop_done != 2)	1365	if (expect_false (loop_done))
1017	loop_done = 0;	1366	break;
		1367	}
		1368
		1369	if (loop_done == EVUNLOOP_ONE)
		1370	loop_done = EVUNLOOP_CANCEL;
1018	}	1371	}
1019		1372
1020	void	1373	void
1021	ev_unloop (EV_P_ int how)	1374	ev_unloop (EV_P_ int how)
1022	{	1375	{
1023	loop_done = how;	1376	loop_done = how;
1024	}	1377	}
1025		1378
1026	/*****************************************************************************/	1379	/*****************************************************************************/
1027		1380
1028	inline void	1381	void inline_size
1029	wlist_add (WL *head, WL elem)	1382	wlist_add (WL *head, WL elem)
1030	{	1383	{
1031	elem->next = *head;	1384	elem->next = *head;
1032	*head = elem;	1385	*head = elem;
1033	}	1386	}
1034		1387
1035	inline void	1388	void inline_size
1036	wlist_del (WL *head, WL elem)	1389	wlist_del (WL *head, WL elem)
1037	{	1390	{
1038	while (*head)	1391	while (*head)
1039	{	1392	{
1040	if (*head == elem)	1393	if (*head == elem)
…		…
1045		1398
1046	head = &(*head)->next;	1399	head = &(*head)->next;
1047	}	1400	}
1048	}	1401	}
1049		1402
1050	inline void	1403	void inline_speed
1051	ev_clear_pending (EV_P_ W w)	1404	ev_clear_pending (EV_P_ W w)
1052	{	1405	{
1053	if (w->pending)	1406	if (w->pending)
1054	{	1407	{
1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1408	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1056	w->pending = 0;	1409	w->pending = 0;
1057	}	1410	}
1058	}	1411	}
1059		1412
1060	inline void	1413	void inline_speed
1061	ev_start (EV_P_ W w, int active)	1414	ev_start (EV_P_ W w, int active)
1062	{	1415	{
1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1416	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1417	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1065		1418
1066	w->active = active;	1419	w->active = active;
1067	ev_ref (EV_A);	1420	ev_ref (EV_A);
1068	}	1421	}
1069		1422
1070	inline void	1423	void inline_size
1071	ev_stop (EV_P_ W w)	1424	ev_stop (EV_P_ W w)
1072	{	1425	{
1073	ev_unref (EV_A);	1426	ev_unref (EV_A);
1074	w->active = 0;	1427	w->active = 0;
1075	}	1428	}
1076		1429
1077	/*****************************************************************************/	1430	/*****************************************************************************/
1078		1431
1079	void	1432	void
1080	ev_io_start (EV_P_ struct ev_io *w)	1433	ev_io_start (EV_P_ ev_io *w)
1081	{	1434	{
1082	int fd = w->fd;	1435	int fd = w->fd;
1083		1436
1084	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1085	return;	1438	return;
1086		1439
1087	assert (("ev_io_start called with negative fd", fd >= 0));	1440	assert (("ev_io_start called with negative fd", fd >= 0));
1088		1441
1089	ev_start (EV_A_ (W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1443	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1444	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1092		1445
1093	fd_change (EV_A_ fd);	1446	fd_change (EV_A_ fd);
1094	}	1447	}
1095		1448
1096	void	1449	void
1097	ev_io_stop (EV_P_ struct ev_io *w)	1450	ev_io_stop (EV_P_ ev_io *w)
1098	{	1451	{
1099	ev_clear_pending (EV_A_ (W)w);	1452	ev_clear_pending (EV_A_ (W)w);
1100	if (!ev_is_active (w))	1453	if (expect_false (!ev_is_active (w)))
1101	return;	1454	return;
		1455
		1456	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1102		1457
1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1458	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1104	ev_stop (EV_A_ (W)w);	1459	ev_stop (EV_A_ (W)w);
1105		1460
1106	fd_change (EV_A_ w->fd);	1461	fd_change (EV_A_ w->fd);
1107	}	1462	}
1108		1463
1109	void	1464	void
1110	ev_timer_start (EV_P_ struct ev_timer *w)	1465	ev_timer_start (EV_P_ ev_timer *w)
1111	{	1466	{
1112	if (ev_is_active (w))	1467	if (expect_false (ev_is_active (w)))
1113	return;	1468	return;
1114		1469
1115	w->at += mn_now;	1470	((WT)w)->at += mn_now;
1116		1471
1117	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1472	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1118		1473
1119	ev_start (EV_A_ (W)w, ++timercnt);	1474	ev_start (EV_A_ (W)w, ++timercnt);
1120	array_needsize (timers, timermax, timercnt, );	1475	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1121	timers [timercnt - 1] = w;	1476	timers [timercnt - 1] = w;
1122	upheap ((WT *)timers, timercnt - 1);	1477	upheap ((WT *)timers, timercnt - 1);
1123	}
1124		1478
		1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1480	}
		1481
1125	void	1482	void
1126	ev_timer_stop (EV_P_ struct ev_timer *w)	1483	ev_timer_stop (EV_P_ ev_timer *w)
1127	{	1484	{
1128	ev_clear_pending (EV_A_ (W)w);	1485	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1486	if (expect_false (!ev_is_active (w)))
1130	return;	1487	return;
1131		1488
		1489	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1490
1132	if (w->active < timercnt--)	1491	if (expect_true (((W)w)->active < timercnt--))
1133	{	1492	{
1134	timers [w->active - 1] = timers [timercnt];	1493	timers [((W)w)->active - 1] = timers [timercnt];
1135	downheap ((WT *)timers, timercnt, w->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1136	}	1495	}
1137		1496
1138	w->at = w->repeat;	1497	((WT)w)->at -= mn_now;
1139		1498
1140	ev_stop (EV_A_ (W)w);	1499	ev_stop (EV_A_ (W)w);
1141	}	1500	}
1142		1501
1143	void	1502	void
1144	ev_timer_again (EV_P_ struct ev_timer *w)	1503	ev_timer_again (EV_P_ ev_timer *w)
1145	{	1504	{
1146	if (ev_is_active (w))	1505	if (ev_is_active (w))
1147	{	1506	{
1148	if (w->repeat)	1507	if (w->repeat)
1149	{	1508	{
1150	w->at = mn_now + w->repeat;	1509	((WT)w)->at = mn_now + w->repeat;
1151	downheap ((WT *)timers, timercnt, w->active - 1);	1510	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1511	}
1153	else	1512	else
1154	ev_timer_stop (EV_A_ w);	1513	ev_timer_stop (EV_A_ w);
1155	}	1514	}
1156	else if (w->repeat)	1515	else if (w->repeat)
		1516	{
		1517	w->at = w->repeat;
1157	ev_timer_start (EV_A_ w);	1518	ev_timer_start (EV_A_ w);
		1519	}
1158	}	1520	}
1159		1521
		1522	#if EV_PERIODIC_ENABLE
1160	void	1523	void
1161	ev_periodic_start (EV_P_ struct ev_periodic *w)	1524	ev_periodic_start (EV_P_ ev_periodic *w)
1162	{	1525	{
1163	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1164	return;	1527	return;
1165		1528
		1529	if (w->reschedule_cb)
		1530	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1531	else if (w->interval)
		1532	{
1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1533	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1167
1168	/* this formula differs from the one in periodic_reify because we do not always round up */	1534	/* this formula differs from the one in periodic_reify because we do not always round up */
1169	if (w->interval)
1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1535	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1536	}
1171		1537
1172	ev_start (EV_A_ (W)w, ++periodiccnt);	1538	ev_start (EV_A_ (W)w, ++periodiccnt);
1173	array_needsize (periodics, periodicmax, periodiccnt, );	1539	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1174	periodics [periodiccnt - 1] = w;	1540	periodics [periodiccnt - 1] = w;
1175	upheap ((WT *)periodics, periodiccnt - 1);	1541	upheap ((WT *)periodics, periodiccnt - 1);
1176	}
1177		1542
		1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1544	}
		1545
1178	void	1546	void
1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1547	ev_periodic_stop (EV_P_ ev_periodic *w)
1180	{	1548	{
1181	ev_clear_pending (EV_A_ (W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1182	if (!ev_is_active (w))	1550	if (expect_false (!ev_is_active (w)))
1183	return;	1551	return;
1184		1552
		1553	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1554
1185	if (w->active < periodiccnt--)	1555	if (expect_true (((W)w)->active < periodiccnt--))
1186	{	1556	{
1187	periodics [w->active - 1] = periodics [periodiccnt];	1557	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1558	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1189	}	1559	}
1190		1560
1191	ev_stop (EV_A_ (W)w);	1561	ev_stop (EV_A_ (W)w);
1192	}	1562	}
1193		1563
1194	void	1564	void
1195	ev_idle_start (EV_P_ struct ev_idle *w)	1565	ev_periodic_again (EV_P_ ev_periodic *w)
1196	{	1566	{
1197	if (ev_is_active (w))	1567	/* TODO: use adjustheap and recalculation */
1198	return;
1199
1200	ev_start (EV_A_ (W)w, ++idlecnt);
1201	array_needsize (idles, idlemax, idlecnt, );
1202	idles [idlecnt - 1] = w;
1203	}
1204
1205	void
1206	ev_idle_stop (EV_P_ struct ev_idle *w)
1207	{
1208	ev_clear_pending (EV_A_ (W)w);
1209	if (ev_is_active (w))
1210	return;
1211
1212	idles [w->active - 1] = idles [--idlecnt];
1213	ev_stop (EV_A_ (W)w);	1568	ev_periodic_stop (EV_A_ w);
		1569	ev_periodic_start (EV_A_ w);
1214	}	1570	}
1215		1571	#endif
1216	void
1217	ev_prepare_start (EV_P_ struct ev_prepare *w)
1218	{
1219	if (ev_is_active (w))
1220	return;
1221
1222	ev_start (EV_A_ (W)w, ++preparecnt);
1223	array_needsize (prepares, preparemax, preparecnt, );
1224	prepares [preparecnt - 1] = w;
1225	}
1226
1227	void
1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1229	{
1230	ev_clear_pending (EV_A_ (W)w);
1231	if (ev_is_active (w))
1232	return;
1233
1234	prepares [w->active - 1] = prepares [--preparecnt];
1235	ev_stop (EV_A_ (W)w);
1236	}
1237
1238	void
1239	ev_check_start (EV_P_ struct ev_check *w)
1240	{
1241	if (ev_is_active (w))
1242	return;
1243
1244	ev_start (EV_A_ (W)w, ++checkcnt);
1245	array_needsize (checks, checkmax, checkcnt, );
1246	checks [checkcnt - 1] = w;
1247	}
1248
1249	void
1250	ev_check_stop (EV_P_ struct ev_check *w)
1251	{
1252	ev_clear_pending (EV_A_ (W)w);
1253	if (ev_is_active (w))
1254	return;
1255
1256	checks [w->active - 1] = checks [--checkcnt];
1257	ev_stop (EV_A_ (W)w);
1258	}
1259		1572
1260	#ifndef SA_RESTART	1573	#ifndef SA_RESTART
1261	# define SA_RESTART 0	1574	# define SA_RESTART 0
1262	#endif	1575	#endif
1263		1576
1264	void	1577	void
1265	ev_signal_start (EV_P_ struct ev_signal *w)	1578	ev_signal_start (EV_P_ ev_signal *w)
1266	{	1579	{
1267	#if EV_MULTIPLICITY	1580	#if EV_MULTIPLICITY
1268	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1581	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1269	#endif	1582	#endif
1270	if (ev_is_active (w))	1583	if (expect_false (ev_is_active (w)))
1271	return;	1584	return;
1272		1585
1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1586	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1274		1587
1275	ev_start (EV_A_ (W)w, 1);	1588	ev_start (EV_A_ (W)w, 1);
1276	array_needsize (signals, signalmax, w->signum, signals_init);	1589	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1278		1591
1279	if (!w->next)	1592	if (!((WL)w)->next)
1280	{	1593	{
		1594	#if _WIN32
		1595	signal (w->signum, sighandler);
		1596	#else
1281	struct sigaction sa;	1597	struct sigaction sa;
1282	sa.sa_handler = sighandler;	1598	sa.sa_handler = sighandler;
1283	sigfillset (&sa.sa_mask);	1599	sigfillset (&sa.sa_mask);
1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1600	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1285	sigaction (w->signum, &sa, 0);	1601	sigaction (w->signum, &sa, 0);
		1602	#endif
1286	}	1603	}
1287	}	1604	}
1288		1605
1289	void	1606	void
1290	ev_signal_stop (EV_P_ struct ev_signal *w)	1607	ev_signal_stop (EV_P_ ev_signal *w)
1291	{	1608	{
1292	ev_clear_pending (EV_A_ (W)w);	1609	ev_clear_pending (EV_A_ (W)w);
1293	if (!ev_is_active (w))	1610	if (expect_false (!ev_is_active (w)))
1294	return;	1611	return;
1295		1612
1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1613	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1297	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1298		1615
1299	if (!signals [w->signum - 1].head)	1616	if (!signals [w->signum - 1].head)
1300	signal (w->signum, SIG_DFL);	1617	signal (w->signum, SIG_DFL);
1301	}	1618	}
1302		1619
1303	void	1620	void
1304	ev_child_start (EV_P_ struct ev_child *w)	1621	ev_child_start (EV_P_ ev_child *w)
1305	{	1622	{
1306	#if EV_MULTIPLICITY	1623	#if EV_MULTIPLICITY
1307	assert (("child watchers are only supported in the default loop", loop == default_loop));	1624	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1308	#endif	1625	#endif
1309	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1310	return;	1627	return;
1311		1628
1312	ev_start (EV_A_ (W)w, 1);	1629	ev_start (EV_A_ (W)w, 1);
1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1314	}	1631	}
1315		1632
1316	void	1633	void
1317	ev_child_stop (EV_P_ struct ev_child *w)	1634	ev_child_stop (EV_P_ ev_child *w)
1318	{	1635	{
1319	ev_clear_pending (EV_A_ (W)w);	1636	ev_clear_pending (EV_A_ (W)w);
1320	if (ev_is_active (w))	1637	if (expect_false (!ev_is_active (w)))
1321	return;	1638	return;
1322		1639
1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1640	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1324	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1325	}	1642	}
1326		1643
		1644	#if EV_STAT_ENABLE
		1645
		1646	# ifdef _WIN32
		1647	# undef lstat
		1648	# define lstat(a,b) _stati64 (a,b)
		1649	# endif
		1650
		1651	#define DEF_STAT_INTERVAL 5.0074891
		1652	#define MIN_STAT_INTERVAL 0.1074891
		1653
		1654	void
		1655	ev_stat_stat (EV_P_ ev_stat *w)
		1656	{
		1657	if (lstat (w->path, &w->attr) < 0)
		1658	w->attr.st_nlink = 0;
		1659	else if (!w->attr.st_nlink)
		1660	w->attr.st_nlink = 1;
		1661	}
		1662
		1663	static void
		1664	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1665	{
		1666	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1667
		1668	/* we copy this here each the time so that */
		1669	/* prev has the old value when the callback gets invoked */
		1670	w->prev = w->attr;
		1671	ev_stat_stat (EV_A_ w);
		1672
		1673	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1674	ev_feed_event (EV_A_ w, EV_STAT);
		1675	}
		1676
		1677	void
		1678	ev_stat_start (EV_P_ ev_stat *w)
		1679	{
		1680	if (expect_false (ev_is_active (w)))
		1681	return;
		1682
		1683	/* since we use memcmp, we need to clear any padding data etc. */
		1684	memset (&w->prev, 0, sizeof (ev_statdata));
		1685	memset (&w->attr, 0, sizeof (ev_statdata));
		1686
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (w->interval < MIN_STAT_INTERVAL)
		1690	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1691
		1692	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1693	ev_set_priority (&w->timer, ev_priority (w));
		1694	ev_timer_start (EV_A_ &w->timer);
		1695
		1696	ev_start (EV_A_ (W)w, 1);
		1697	}
		1698
		1699	void
		1700	ev_stat_stop (EV_P_ ev_stat *w)
		1701	{
		1702	ev_clear_pending (EV_A_ (W)w);
		1703	if (expect_false (!ev_is_active (w)))
		1704	return;
		1705
		1706	ev_timer_stop (EV_A_ &w->timer);
		1707
		1708	ev_stop (EV_A_ (W)w);
		1709	}
		1710	#endif
		1711
		1712	void
		1713	ev_idle_start (EV_P_ ev_idle *w)
		1714	{
		1715	if (expect_false (ev_is_active (w)))
		1716	return;
		1717
		1718	ev_start (EV_A_ (W)w, ++idlecnt);
		1719	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1720	idles [idlecnt - 1] = w;
		1721	}
		1722
		1723	void
		1724	ev_idle_stop (EV_P_ ev_idle *w)
		1725	{
		1726	ev_clear_pending (EV_A_ (W)w);
		1727	if (expect_false (!ev_is_active (w)))
		1728	return;
		1729
		1730	{
		1731	int active = ((W)w)->active;
		1732	idles [active - 1] = idles [--idlecnt];
		1733	((W)idles [active - 1])->active = active;
		1734	}
		1735
		1736	ev_stop (EV_A_ (W)w);
		1737	}
		1738
		1739	void
		1740	ev_prepare_start (EV_P_ ev_prepare *w)
		1741	{
		1742	if (expect_false (ev_is_active (w)))
		1743	return;
		1744
		1745	ev_start (EV_A_ (W)w, ++preparecnt);
		1746	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1747	prepares [preparecnt - 1] = w;
		1748	}
		1749
		1750	void
		1751	ev_prepare_stop (EV_P_ ev_prepare *w)
		1752	{
		1753	ev_clear_pending (EV_A_ (W)w);
		1754	if (expect_false (!ev_is_active (w)))
		1755	return;
		1756
		1757	{
		1758	int active = ((W)w)->active;
		1759	prepares [active - 1] = prepares [--preparecnt];
		1760	((W)prepares [active - 1])->active = active;
		1761	}
		1762
		1763	ev_stop (EV_A_ (W)w);
		1764	}
		1765
		1766	void
		1767	ev_check_start (EV_P_ ev_check *w)
		1768	{
		1769	if (expect_false (ev_is_active (w)))
		1770	return;
		1771
		1772	ev_start (EV_A_ (W)w, ++checkcnt);
		1773	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1774	checks [checkcnt - 1] = w;
		1775	}
		1776
		1777	void
		1778	ev_check_stop (EV_P_ ev_check *w)
		1779	{
		1780	ev_clear_pending (EV_A_ (W)w);
		1781	if (expect_false (!ev_is_active (w)))
		1782	return;
		1783
		1784	{
		1785	int active = ((W)w)->active;
		1786	checks [active - 1] = checks [--checkcnt];
		1787	((W)checks [active - 1])->active = active;
		1788	}
		1789
		1790	ev_stop (EV_A_ (W)w);
		1791	}
		1792
		1793	#if EV_EMBED_ENABLE
		1794	void noinline
		1795	ev_embed_sweep (EV_P_ ev_embed *w)
		1796	{
		1797	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1798	}
		1799
		1800	static void
		1801	embed_cb (EV_P_ ev_io *io, int revents)
		1802	{
		1803	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1804
		1805	if (ev_cb (w))
		1806	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1807	else
		1808	ev_embed_sweep (loop, w);
		1809	}
		1810
		1811	void
		1812	ev_embed_start (EV_P_ ev_embed *w)
		1813	{
		1814	if (expect_false (ev_is_active (w)))
		1815	return;
		1816
		1817	{
		1818	struct ev_loop *loop = w->loop;
		1819	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1820	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1821	}
		1822
		1823	ev_set_priority (&w->io, ev_priority (w));
		1824	ev_io_start (EV_A_ &w->io);
		1825
		1826	ev_start (EV_A_ (W)w, 1);
		1827	}
		1828
		1829	void
		1830	ev_embed_stop (EV_P_ ev_embed *w)
		1831	{
		1832	ev_clear_pending (EV_A_ (W)w);
		1833	if (expect_false (!ev_is_active (w)))
		1834	return;
		1835
		1836	ev_io_stop (EV_A_ &w->io);
		1837
		1838	ev_stop (EV_A_ (W)w);
		1839	}
		1840	#endif
		1841
		1842	#if EV_FORK_ENABLE
		1843	void
		1844	ev_fork_start (EV_P_ ev_fork *w)
		1845	{
		1846	if (expect_false (ev_is_active (w)))
		1847	return;
		1848
		1849	ev_start (EV_A_ (W)w, ++forkcnt);
		1850	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1851	forks [forkcnt - 1] = w;
		1852	}
		1853
		1854	void
		1855	ev_fork_stop (EV_P_ ev_fork *w)
		1856	{
		1857	ev_clear_pending (EV_A_ (W)w);
		1858	if (expect_false (!ev_is_active (w)))
		1859	return;
		1860
		1861	{
		1862	int active = ((W)w)->active;
		1863	forks [active - 1] = forks [--forkcnt];
		1864	((W)forks [active - 1])->active = active;
		1865	}
		1866
		1867	ev_stop (EV_A_ (W)w);
		1868	}
		1869	#endif
		1870
1327	/*****************************************************************************/	1871	/*****************************************************************************/
1328		1872
1329	struct ev_once	1873	struct ev_once
1330	{	1874	{
1331	struct ev_io io;	1875	ev_io io;
1332	struct ev_timer to;	1876	ev_timer to;
1333	void (cb)(int revents, void arg);	1877	void (cb)(int revents, void arg);
1334	void *arg;	1878	void *arg;
1335	};	1879	};
1336		1880
1337	static void	1881	static void
…		…
1340	void (cb)(int revents, void arg) = once->cb;	1884	void (cb)(int revents, void arg) = once->cb;
1341	void *arg = once->arg;	1885	void *arg = once->arg;
1342		1886
1343	ev_io_stop (EV_A_ &once->io);	1887	ev_io_stop (EV_A_ &once->io);
1344	ev_timer_stop (EV_A_ &once->to);	1888	ev_timer_stop (EV_A_ &once->to);
1345	free (once);	1889	ev_free (once);
1346		1890
1347	cb (revents, arg);	1891	cb (revents, arg);
1348	}	1892	}
1349		1893
1350	static void	1894	static void
1351	once_cb_io (EV_P_ struct ev_io *w, int revents)	1895	once_cb_io (EV_P_ ev_io *w, int revents)
1352	{	1896	{
1353	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1897	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1354	}	1898	}
1355		1899
1356	static void	1900	static void
1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1901	once_cb_to (EV_P_ ev_timer *w, int revents)
1358	{	1902	{
1359	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1903	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1360	}	1904	}
1361		1905
1362	void	1906	void
1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1907	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1364	{	1908	{
1365	struct ev_once *once = malloc (sizeof (struct ev_once));	1909	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1366		1910
1367	if (!once)	1911	if (expect_false (!once))
		1912	{
1368	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1913	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1369	else	1914	return;
1370	{	1915	}
		1916
1371	once->cb = cb;	1917	once->cb = cb;
1372	once->arg = arg;	1918	once->arg = arg;
1373		1919
1374	ev_watcher_init (&once->io, once_cb_io);	1920	ev_init (&once->io, once_cb_io);
1375	if (fd >= 0)	1921	if (fd >= 0)
1376	{	1922	{
1377	ev_io_set (&once->io, fd, events);	1923	ev_io_set (&once->io, fd, events);
1378	ev_io_start (EV_A_ &once->io);	1924	ev_io_start (EV_A_ &once->io);
1379	}	1925	}
1380		1926
1381	ev_watcher_init (&once->to, once_cb_to);	1927	ev_init (&once->to, once_cb_to);
1382	if (timeout >= 0.)	1928	if (timeout >= 0.)
1383	{	1929	{
1384	ev_timer_set (&once->to, timeout, 0.);	1930	ev_timer_set (&once->to, timeout, 0.);
1385	ev_timer_start (EV_A_ &once->to);	1931	ev_timer_start (EV_A_ &once->to);
1386	}
1387	}	1932	}
1388	}	1933	}
1389		1934
		1935	#ifdef __cplusplus
		1936	}
		1937	#endif
		1938

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Comparing libev/ev.c (file contents): Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs. Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC