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Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.144 by root, Tue Nov 27 08:11:52 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
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		97	# endif
		98
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
48	# 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
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_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
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#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) */
94	#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) */
95	#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 */
96	/*#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 */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# 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
102	# 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
103	#else	200	#else
104	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
105	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
106	#endif	205	#endif
107		206
108	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
110		209
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
114	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
117		219
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		221
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
120	/*****************************************************************************/	226	/*****************************************************************************/
121		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
122	typedef struct	278	typedef struct
123	{	279	{
124	struct ev_watcher_list *head;	280	WL head;
125	unsigned char events;	281	unsigned char events;
126	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
127	} ANFD;	286	} ANFD;
128		287
129	typedef struct	288	typedef struct
130	{	289	{
131	W w;	290	W w;
132	int events;	291	int events;
133	} ANPENDING;	292	} ANPENDING;
134		293
135	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
136		295
137	struct ev_loop	296	struct ev_loop
138	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	301	#include "ev_vars.h"
141	};
142	# undef VAR	302	#undef VAR
		303	};
143	# 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;
144		308
145	#else	309	#else
146		310
		311	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	313	#include "ev_vars.h"
149	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
150		317
151	#endif	318	#endif
152		319
153	/*****************************************************************************/	320	/*****************************************************************************/
154		321
155	inline ev_tstamp	322	ev_tstamp
156	ev_time (void)	323	ev_time (void)
157	{	324	{
158	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
159	struct timespec ts;	326	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	333	#endif
167	}	334	}
168		335
169	inline ev_tstamp	336	ev_tstamp inline_size
170	get_clock (void)	337	get_clock (void)
171	{	338	{
172	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
174	{	341	{
…		…
179	#endif	346	#endif
180		347
181	return ev_time ();	348	return ev_time ();
182	}	349	}
183		350
		351	#if EV_MULTIPLICITY
184	ev_tstamp	352	ev_tstamp
185	ev_now (EV_P)	353	ev_now (EV_P)
186	{	354	{
187	return rt_now;	355	return ev_rt_now;
188	}	356	}
		357	#endif
189		358
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
191		360
192	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
194	{ \	363	{ \
195	int newcnt = cur; \	364	int newcnt = cur; \
196	do \	365	do \
197	{ \	366	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	368	} \
200	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
201	\	370	\
202	base = realloc (base, sizeof (*base) * (newcnt)); \	371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
203	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	373	cur = newcnt; \
205	}	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;
206		386
207	/*****************************************************************************/	387	/*****************************************************************************/
208		388
209	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
210	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
211	{	419	{
212	while (count--)	420	while (count--)
213	{	421	{
214	base->head = 0;	422	base->head = 0;
…		…
217		425
218	++base;	426	++base;
219	}	427	}
220	}	428	}
221		429
222	static void	430	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
248	{	432	{
249	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	434	ev_io *w;
251		435
252	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)
253	{	437	{
254	int ev = w->events & events;	438	int ev = w->events & revents;
255		439
256	if (ev)	440	if (ev)
257	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
258	}	442	}
259	}	443	}
260		444
261	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
262		450
263	static void	451	void inline_size
264	fd_reify (EV_P)	452	fd_reify (EV_P)
265	{	453	{
266	int i;	454	int i;
267		455
268	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
269	{	457	{
270	int fd = fdchanges [i];	458	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	460	ev_io *w;
273		461
274	int events = 0;	462	int events = 0;
275		463
276	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)
277	events |= w->events;	465	events |= w->events;
278		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
279	anfd->reify = 0;	476	anfd->reify = 0;
280		477
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	479	anfd->events = events;
285	}
286	}	480	}
287		481
288	fdchangecnt = 0;	482	fdchangecnt = 0;
289	}	483	}
290		484
291	static void	485	void inline_size
292	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
293	{	487	{
294	if (anfds [fd].reify || fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
295	return;	489	return;
296		490
297	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
298		492
299	++fdchangecnt;	493	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
302	}	496	}
303		497
304	static void	498	void inline_speed
305	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
306	{	500	{
307	struct ev_io *w;	501	ev_io *w;
308		502
309	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
310	{	504	{
311	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
312	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);
313	}	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
314	}	518	}
315		519
316	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
317	static void	521	static void noinline
318	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
319	{	523	{
320	int fd;	524	int fd;
321		525
322	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	527	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
326	}	530	}
327		531
328	/* 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 */
329	static void	533	static void noinline
330	fd_enomem (EV_P)	534	fd_enomem (EV_P)
331	{	535	{
332	int fd = anfdmax;	536	int fd;
333		537
334	while (fd--)	538	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	539	if (anfds [fd].events)
336	{	540	{
337	close (fd);
338	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
339	return;	542	return;
340	}	543	}
341	}	544	}
342		545
343	/* 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 */
344	static void	547	static void noinline
345	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
346	{	549	{
347	int fd;	550	int fd;
348		551
349	/* 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 */
350	for (fd = 0; fd < anfdmax; ++fd)	553	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	554	if (anfds [fd].events)
352	{	555	{
353	anfds [fd].events = 0;	556	anfds [fd].events = 0;
354	fd_change (fd);	557	fd_change (EV_A_ fd);
355	}	558	}
356	}	559	}
357		560
358	/*****************************************************************************/	561	/*****************************************************************************/
359		562
360	static void	563	void inline_speed
361	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
362	{	565	{
363	WT w = heap [k];	566	WT w = heap [k];
364		567
365	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
366	{	569	{
367	heap [k] = heap [k >> 1];	570	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	571	((W)heap [k])->active = k + 1;
369	k >>= 1;	572	k >>= 1;
370	}	573	}
371		574
372	heap [k] = w;	575	heap [k] = w;
373	heap [k]->active = k + 1;	576	((W)heap [k])->active = k + 1;
374		577
375	}	578	}
376		579
377	static void	580	void inline_speed
378	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
379	{	582	{
380	WT w = heap [k];	583	WT w = heap [k];
381		584
382	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
388		591
389	if (w->at <= heap [j]->at)	592	if (w->at <= heap [j]->at)
390	break;	593	break;
391		594
392	heap [k] = heap [j];	595	heap [k] = heap [j];
393	heap [k]->active = k + 1;	596	((W)heap [k])->active = k + 1;
394	k = j;	597	k = j;
395	}	598	}
396		599
397	heap [k] = w;	600	heap [k] = w;
398	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);
399	}	609	}
400		610
401	/*****************************************************************************/	611	/*****************************************************************************/
402		612
403	typedef struct	613	typedef struct
404	{	614	{
405	struct ev_watcher_list *head;	615	WL head;
406	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
407	} ANSIG;	617	} ANSIG;
408		618
409	static ANSIG *signals;	619	static ANSIG *signals;
410	static int signalmax;	620	static int signalmax;
411		621
412	static int sigpipe [2];	622	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
		624	static ev_io sigev;
414		625
415	static void	626	void inline_size
416	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
417	{	628	{
418	while (count--)	629	while (count--)
419	{	630	{
420	base->head = 0;	631	base->head = 0;
…		…
425	}	636	}
426		637
427	static void	638	static void
428	sighandler (int signum)	639	sighandler (int signum)
429	{	640	{
		641	#if _WIN32
		642	signal (signum, sighandler);
		643	#endif
		644
430	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
431		646
432	if (!gotsig)	647	if (!gotsig)
433	{	648	{
434	int old_errno = errno;	649	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	652	errno = old_errno;
438	}	653	}
439	}	654	}
440		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
441	static void	676	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
443	{	678	{
444	struct ev_watcher_list *w;
445	int signum;	679	int signum;
446		680
447	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	682	gotsig = 0;
449		683
450	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
452	{	686	ev_feed_signal_event (EV_A_ signum + 1);
453	signals [signum].gotsig = 0;
454
455	for (w = signals [signum].head; w; w = w->next)
456	event (EV_A_ (W)w, EV_SIGNAL);
457	}
458	}	687	}
459		688
460	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
461	siginit (EV_P)	702	siginit (EV_P)
462	{	703	{
463	#ifndef WIN32	704	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467	/* rather than sort out wether we really need nb, set it */
468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470	#endif
471		706
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	710	}
476		711
477	/*****************************************************************************/	712	/*****************************************************************************/
478		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
479	#ifndef WIN32	716	#ifndef _WIN32
		717
		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	}
480		734
481	#ifndef WCONTINUED	735	#ifndef WCONTINUED
482	# define WCONTINUED 0	736	# define WCONTINUED 0
483	#endif	737	#endif
484		738
485	static void	739	static void
486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
487	{
488	struct ev_child *w;
489
490	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
491	if (w->pid == pid || !w->pid)
492	{
493	w->priority = sw->priority; /* need to do it *now* */
494	w->rpid = pid;
495	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);
497	}
498	}
499
500	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
502	{	741	{
503	int pid, status;	742	int pid, status;
504		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
507	/* 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 */
508	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		754
510	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
511	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 */
512	}
513	}	757	}
514		758
515	#endif	759	#endif
516		760
517	/*****************************************************************************/	761	/*****************************************************************************/
518		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
519	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
520	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
521	#endif	768	#endif
522	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	770	# include "ev_epoll.c"
524	#endif	771	#endif
525	#if EV_USEV_POLL	772	#if EV_USE_POLL
526	# include "ev_poll.c"	773	# include "ev_poll.c"
527	#endif	774	#endif
528	#if EV_USE_SELECT	775	#if EV_USE_SELECT
529	# include "ev_select.c"	776	# include "ev_select.c"
530	#endif	777	#endif
…		…
540	{	787	{
541	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
542	}	789	}
543		790
544	/* 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 */
545	static int	792	int inline_size
546	enable_secure (void)	793	enable_secure (void)
547	{	794	{
548	#ifdef WIN32	795	#ifdef _WIN32
549	return 0;	796	return 0;
550	#else	797	#else
551	return getuid () != geteuid ()	798	return getuid () != geteuid ()
552	|| getgid () != getegid ();	799	|| getgid () != getegid ();
553	#endif	800	#endif
554	}	801	}
555		802
556	int	803	unsigned int
557	ev_method (EV_P)	804	ev_supported_backends (void)
558	{	805	{
559	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;
560	}	847	}
561		848
562	static void	849	static void
563	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
564	{	851	{
565	if (!method)	852	if (!backend)
566	{	853	{
567	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
568	{	855	{
569	struct timespec ts;	856	struct timespec ts;
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	858	have_monotonic = 1;
572	}	859	}
573	#endif	860	#endif
574		861
575	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	863	mn_now = get_clock ();
577	now_floor = mn_now;	864	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
579		866
580	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else
584	methods = EVMETHOD_ANY;
585		871
586	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
587	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589	#endif	881	#endif
590	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592	#endif	884	#endif
593	#if EV_USEV_POLL	885	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595	#endif	887	#endif
596	#if EV_USE_SELECT	888	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598	#endif	890	#endif
599	}
600	}
601		891
602	void	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
603	loop_destroy (EV_P)	898	loop_destroy (EV_P)
604	{	899	{
		900	int i;
		901
		902	#if EV_USE_PORT
		903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		904	#endif
605	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607	#endif	907	#endif
608	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610	#endif	910	#endif
611	#if EV_USEV_POLL	911	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613	#endif	913	#endif
614	#if EV_USE_SELECT	914	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616	#endif	916	#endif
617		917
618	method = 0;	918	for (i = NUMPRI; i--; )
619	/*TODO*/	919	array_free (pending, [i]);
620	}
621		920
622	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
623	loop_fork (EV_P)	935	loop_fork (EV_P)
624	{	936	{
625	/*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
626	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628	#endif	945	#endif
629	#if EV_USE_KQUEUE	946
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	947	if (ev_is_active (&sigev))
631	#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;
632	}	963	}
633		964
634	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
635	struct ev_loop *	966	struct ev_loop *
636	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
637	{	968	{
638	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));
639		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
640	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
641		974
642	if (ev_methods (EV_A))	975	if (ev_backend (EV_A))
643	return loop;	976	return loop;
644		977
645	return 0;	978	return 0;
646	}	979	}
647		980
648	void	981	void
649	ev_loop_destroy (EV_P)	982	ev_loop_destroy (EV_P)
650	{	983	{
651	loop_destroy (EV_A);	984	loop_destroy (EV_A);
652	free (loop);	985	ev_free (loop);
653	}	986	}
654		987
655	void	988	void
656	ev_loop_fork (EV_P)	989	ev_loop_fork (EV_P)
657	{	990	{
658	loop_fork (EV_A);	991	postfork = 1;
659	}	992	}
660		993
661	#endif	994	#endif
662		995
663	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
668	#else	999	#else
669	static int default_loop;
670
671	int	1000	int
		1001	ev_default_loop (unsigned int flags)
672	#endif	1002	#endif
673	ev_default_loop (int methods)
674	{	1003	{
675	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
677	return 0;	1006	return 0;
678		1007
679	if (!default_loop)	1008	if (!ev_default_loop_ptr)
680	{	1009	{
681	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
682	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683	#else	1012	#else
684	default_loop = 1;	1013	ev_default_loop_ptr = 1;
685	#endif	1014	#endif
686		1015
687	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
688		1017
689	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
690	{	1019	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	1020	siginit (EV_A);
694		1021
695	#ifndef WIN32	1022	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	1027	#endif
701	}	1028	}
702	else	1029	else
703	default_loop = 0;	1030	ev_default_loop_ptr = 0;
704	}	1031	}
705		1032
706	return default_loop;	1033	return ev_default_loop_ptr;
707	}	1034	}
708		1035
709	void	1036	void
710	ev_default_destroy (void)	1037	ev_default_destroy (void)
711	{	1038	{
		1039	#if EV_MULTIPLICITY
712	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
		1041	#endif
713		1042
		1043	#ifndef _WIN32
714	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
715	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
716		1047
717	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
718	ev_io_stop (EV_A_ &sigev);	1049	ev_io_stop (EV_A_ &sigev);
719		1050
720	close (sigpipe [0]); sigpipe [0] = 0;	1051	close (sigpipe [0]); sigpipe [0] = 0;
…		…
722		1053
723	loop_destroy (EV_A);	1054	loop_destroy (EV_A);
724	}	1055	}
725		1056
726	void	1057	void
727	ev_default_fork (EV_P)	1058	ev_default_fork (void)
728	{	1059	{
729	loop_fork (EV_A);	1060	#if EV_MULTIPLICITY
		1061	struct ev_loop *loop = ev_default_loop_ptr;
		1062	#endif
730		1063
731	ev_io_stop (EV_A_ &sigev);	1064	if (backend)
732	close (sigpipe [0]);	1065	postfork = 1;
733	close (sigpipe [1]);
734	pipe (sigpipe);
735
736	ev_ref (EV_A); /* signal watcher */
737	siginit (EV_A);
738	}	1066	}
739		1067
740	/*****************************************************************************/	1068	/*****************************************************************************/
741		1069
742	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
743	call_pending (EV_P)	1083	call_pending (EV_P)
744	{	1084	{
745	int pri;	1085	int pri;
746		1086
747	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
748	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
749	{	1089	{
750	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
751		1091
752	if (p->w)	1092	if (expect_true (p->w))
753	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
754	p->w->pending = 0;	1096	p->w->pending = 0;
755	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
756	}	1098	}
757	}	1099	}
758	}	1100	}
759		1101
760	static void	1102	void inline_size
761	timers_reify (EV_P)	1103	timers_reify (EV_P)
762	{	1104	{
763	while (timercnt && timers [0]->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
764	{	1106	{
765	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
		1108
		1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
766		1110
767	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
768	if (w->repeat)	1112	if (w->repeat)
769	{	1113	{
770	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
771	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
772	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
773	}	1121	}
774	else	1122	else
775	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
776		1124
777	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
778	}	1126	}
779	}	1127	}
780		1128
781	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
782	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
783	{	1132	{
784	while (periodiccnt && periodics [0]->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
785	{	1134	{
786	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
		1136
		1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
787		1138
788	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
789	if (w->interval)	1140	if (w->reschedule_cb)
790	{	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	{
791	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;
792	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));
793	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
794	}	1151	}
795	else	1152	else
796	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
797		1154
798	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
799	}	1156	}
800	}	1157	}
801		1158
802	static void	1159	static void noinline
803	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
804	{	1161	{
805	int i;	1162	int i;
806		1163
807	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
808	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
809	{	1166	{
810	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
811		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
812	if (w->interval)	1171	else if (w->interval)
813	{
814	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;
815
816	if (fabs (diff) >= 1e-4)
817	{
818	ev_periodic_stop (EV_A_ w);
819	ev_periodic_start (EV_A_ w);
820
821	i = 0; /* restart loop, inefficient, but time jumps should be rare */
822	}
823	}
824	}	1173	}
825	}
826		1174
827	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
828	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
829	{	1183	{
830	mn_now = get_clock ();	1184	mn_now = get_clock ();
831		1185
832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
833	{	1187	{
834	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
835	return 0;	1189	return 0;
836	}	1190	}
837	else	1191	else
838	{	1192	{
839	now_floor = mn_now;	1193	now_floor = mn_now;
840	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
841	return 1;	1195	return 1;
842	}	1196	}
843	}	1197	}
844		1198
845	static void	1199	void inline_size
846	time_update (EV_P)	1200	time_update (EV_P)
847	{	1201	{
848	int i;	1202	int i;
849		1203
850	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
852	{	1206	{
853	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
854	{	1208	{
855	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
856		1210
857	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; )
858	{	1220	{
859	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
860		1222
861	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
862	return; /* all is well */	1224	return; /* all is well */
863		1225
864	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
865	mn_now = get_clock ();	1227	mn_now = get_clock ();
866	now_floor = mn_now;	1228	now_floor = mn_now;
867	}	1229	}
868		1230
		1231	# if EV_PERIODIC_ENABLE
869	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
870	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
871	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
872	}	1236	}
873	}	1237	}
874	else	1238	else
875	#endif	1239	#endif
876	{	1240	{
877	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
878		1242
879	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))
880	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
881	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
882		1248
883	/* 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 */
884	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
885	timers [i]->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
886	}	1252	}
887		1253
888	mn_now = rt_now;	1254	mn_now = ev_rt_now;
889	}	1255	}
890	}	1256	}
891		1257
892	void	1258	void
893	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
904	static int loop_done;	1270	static int loop_done;
905		1271
906	void	1272	void
907	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
908	{	1274	{
909	double block;
910	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
911		1278
912	do	1279	while (activecnt)
913	{	1280	{
914	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
915	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
916	{	1283	{
917	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
918	call_pending (EV_A);	1285	call_pending (EV_A);
919	}	1286	}
920		1287
		1288	/* we might have forked, so reify kernel state if necessary */
		1289	if (expect_false (postfork))
		1290	loop_fork (EV_A);
		1291
921	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
922	fd_reify (EV_A);	1293	fd_reify (EV_A);
923		1294
924	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
925		1298
926	/* we only need this for !monotonic clockor timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
927	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
928	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
929	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
930	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
931	else	1307	else
932	#endif	1308	#endif
933	{	1309	{
934	rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
935	mn_now = rt_now;	1311	mn_now = ev_rt_now;
936	}	1312	}
937		1313
938	if (flags & EVLOOP_NONBLOCK || idlecnt)
939	block = 0.;
940	else
941	{
942	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
943		1315
944	if (timercnt)	1316	if (timercnt)
945	{	1317	{
946	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
947	if (block > to) block = to;	1319	if (block > to) block = to;
948	}	1320	}
949		1321
		1322	#if EV_PERIODIC_ENABLE
950	if (periodiccnt)	1323	if (periodiccnt)
951	{	1324	{
952	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
953	if (block > to) block = to;	1326	if (block > to) block = to;
954	}	1327	}
		1328	#endif
955		1329
956	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
957	}	1331	}
958		1332
959	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
960		1335
961	/* update rt_now, do magic */	1336	/* update ev_rt_now, do magic */
962	time_update (EV_A);	1337	time_update (EV_A);
963		1338
964	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
965	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
		1341	#if EV_PERIODIC_ENABLE
966	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
		1343	#endif
967		1344
968	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
969	if (!pendingcnt)	1346	if (idlecnt && !any_pending (EV_A))
970	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
971		1348
972	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
973	if (checkcnt)	1350	if (expect_false (checkcnt))
974	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
975		1352
976	call_pending (EV_A);	1353	call_pending (EV_A);
977	}
978	while (activecnt && !loop_done);
979		1354
980	if (loop_done != 2)	1355	if (expect_false (loop_done))
981	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
982	}	1361	}
983		1362
984	void	1363	void
985	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
986	{	1365	{
987	loop_done = how;	1366	loop_done = how;
988	}	1367	}
989		1368
990	/*****************************************************************************/	1369	/*****************************************************************************/
991		1370
992	inline void	1371	void inline_size
993	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
994	{	1373	{
995	elem->next = *head;	1374	elem->next = *head;
996	*head = elem;	1375	*head = elem;
997	}	1376	}
998		1377
999	inline void	1378	void inline_size
1000	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1001	{	1380	{
1002	while (*head)	1381	while (*head)
1003	{	1382	{
1004	if (*head == elem)	1383	if (*head == elem)
…		…
1009		1388
1010	head = &(*head)->next;	1389	head = &(*head)->next;
1011	}	1390	}
1012	}	1391	}
1013		1392
1014	inline void	1393	void inline_speed
1015	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1016	{	1395	{
1017	if (w->pending)	1396	if (w->pending)
1018	{	1397	{
1019	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1020	w->pending = 0;	1399	w->pending = 0;
1021	}	1400	}
1022	}	1401	}
1023		1402
1024	inline void	1403	void inline_speed
1025	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1026	{	1405	{
1027	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1028	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1029		1408
1030	w->active = active;	1409	w->active = active;
1031	ev_ref (EV_A);	1410	ev_ref (EV_A);
1032	}	1411	}
1033		1412
1034	inline void	1413	void inline_size
1035	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1036	{	1415	{
1037	ev_unref (EV_A);	1416	ev_unref (EV_A);
1038	w->active = 0;	1417	w->active = 0;
1039	}	1418	}
1040		1419
1041	/*****************************************************************************/	1420	/*****************************************************************************/
1042		1421
1043	void	1422	void
1044	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1045	{	1424	{
1046	int fd = w->fd;	1425	int fd = w->fd;
1047		1426
1048	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1049	return;	1428	return;
1050		1429
1051	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1052		1431
1053	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
1054	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1055	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1056		1435
1057	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1058	}	1437	}
1059		1438
1060	void	1439	void
1061	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1062	{	1441	{
1063	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1065	return;	1444	return;
		1445
		1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1066		1447
1067	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1068	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1069		1450
1070	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1071	}	1452	}
1072		1453
1073	void	1454	void
1074	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1075	{	1456	{
1076	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1077	return;	1458	return;
1078		1459
1079	w->at += mn_now;	1460	((WT)w)->at += mn_now;
1080		1461
1081	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1082		1463
1083	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1084	array_needsize (timers, timermax, timercnt, );	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1085	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1086	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1087	}
1088		1468
		1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1470	}
		1471
1089	void	1472	void
1090	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1091	{	1474	{
1092	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1093	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1094	return;	1477	return;
1095		1478
		1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1480
1096	if (w->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1097	{	1482	{
1098	timers [w->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1099	downheap ((WT *)timers, timercnt, w->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1100	}	1485	}
1101		1486
1102	w->at = w->repeat;	1487	((WT)w)->at -= mn_now;
1103		1488
1104	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1105	}	1490	}
1106		1491
1107	void	1492	void
1108	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1109	{	1494	{
1110	if (ev_is_active (w))	1495	if (ev_is_active (w))
1111	{	1496	{
1112	if (w->repeat)	1497	if (w->repeat)
1113	{	1498	{
1114	w->at = mn_now + w->repeat;	1499	((WT)w)->at = mn_now + w->repeat;
1115	downheap ((WT *)timers, timercnt, w->active - 1);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1116	}	1501	}
1117	else	1502	else
1118	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1119	}	1504	}
1120	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1121	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1122	}	1510	}
1123		1511
		1512	#if EV_PERIODIC_ENABLE
1124	void	1513	void
1125	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1126	{	1515	{
1127	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1128	return;	1517	return;
1129		1518
		1519	if (w->reschedule_cb)
		1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1521	else if (w->interval)
		1522	{
1130	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1131
1132	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1133	if (w->interval)
1134	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1526	}
1135		1527
1136	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1137	array_needsize (periodics, periodicmax, periodiccnt, );	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1138	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1139	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1140	}
1141		1532
		1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1534	}
		1535
1142	void	1536	void
1143	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1144	{	1538	{
1145	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1147	return;	1541	return;
1148		1542
		1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1544
1149	if (w->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1150	{	1546	{
1151	periodics [w->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1152	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1153	}	1549	}
1154		1550
1155	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1156	}	1552	}
1157		1553
1158	void	1554	void
1159	ev_idle_start (EV_P_ struct ev_idle *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1160	{	1556	{
1161	if (ev_is_active (w))	1557	/* TODO: use adjustheap and recalculation */
1162	return;
1163
1164	ev_start (EV_A_ (W)w, ++idlecnt);
1165	array_needsize (idles, idlemax, idlecnt, );
1166	idles [idlecnt - 1] = w;
1167	}
1168
1169	void
1170	ev_idle_stop (EV_P_ struct ev_idle *w)
1171	{
1172	ev_clear_pending (EV_A_ (W)w);
1173	if (ev_is_active (w))
1174	return;
1175
1176	idles [w->active - 1] = idles [--idlecnt];
1177	ev_stop (EV_A_ (W)w);	1558	ev_periodic_stop (EV_A_ w);
		1559	ev_periodic_start (EV_A_ w);
1178	}	1560	}
1179		1561	#endif
1180	void
1181	ev_prepare_start (EV_P_ struct ev_prepare *w)
1182	{
1183	if (ev_is_active (w))
1184	return;
1185
1186	ev_start (EV_A_ (W)w, ++preparecnt);
1187	array_needsize (prepares, preparemax, preparecnt, );
1188	prepares [preparecnt - 1] = w;
1189	}
1190
1191	void
1192	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1193	{
1194	ev_clear_pending (EV_A_ (W)w);
1195	if (ev_is_active (w))
1196	return;
1197
1198	prepares [w->active - 1] = prepares [--preparecnt];
1199	ev_stop (EV_A_ (W)w);
1200	}
1201
1202	void
1203	ev_check_start (EV_P_ struct ev_check *w)
1204	{
1205	if (ev_is_active (w))
1206	return;
1207
1208	ev_start (EV_A_ (W)w, ++checkcnt);
1209	array_needsize (checks, checkmax, checkcnt, );
1210	checks [checkcnt - 1] = w;
1211	}
1212
1213	void
1214	ev_check_stop (EV_P_ struct ev_check *w)
1215	{
1216	ev_clear_pending (EV_A_ (W)w);
1217	if (ev_is_active (w))
1218	return;
1219
1220	checks [w->active - 1] = checks [--checkcnt];
1221	ev_stop (EV_A_ (W)w);
1222	}
1223		1562
1224	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1225	# define SA_RESTART 0	1564	# define SA_RESTART 0
1226	#endif	1565	#endif
1227		1566
1228	void	1567	void
1229	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1230	{	1569	{
1231	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
1232	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1233	#endif	1572	#endif
1234	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1235	return;	1574	return;
1236		1575
1237	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1238		1577
1239	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1240	array_needsize (signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1241	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1242		1581
1243	if (!w->next)	1582	if (!((WL)w)->next)
1244	{	1583	{
		1584	#if _WIN32
		1585	signal (w->signum, sighandler);
		1586	#else
1245	struct sigaction sa;	1587	struct sigaction sa;
1246	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1247	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
1248	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1590	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1249	sigaction (w->signum, &sa, 0);	1591	sigaction (w->signum, &sa, 0);
		1592	#endif
1250	}	1593	}
1251	}	1594	}
1252		1595
1253	void	1596	void
1254	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1255	{	1598	{
1256	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1257	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1258	return;	1601	return;
1259		1602
1260	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1261	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1262		1605
1263	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1264	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1265	}	1608	}
1266		1609
1267	void	1610	void
1268	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1269	{	1612	{
1270	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1271	assert (("child watchers are only supported in the default loop", loop == default_loop));	1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1272	#endif	1615	#endif
1273	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1274	return;	1617	return;
1275		1618
1276	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1277	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1278	}	1621	}
1279		1622
1280	void	1623	void
1281	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1282	{	1625	{
1283	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1284	if (ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1285	return;	1628	return;
1286		1629
1287	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1288	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1289	}	1632	}
1290		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# define lstat(a,b) stat(a,b)
		1638	# endif
		1639
		1640	#define DEF_STAT_INTERVAL 5.0074891
		1641	#define MIN_STAT_INTERVAL 0.1074891
		1642
		1643	void
		1644	ev_stat_stat (EV_P_ ev_stat *w)
		1645	{
		1646	if (lstat (w->path, &w->attr) < 0)
		1647	w->attr.st_nlink = 0;
		1648	else if (!w->attr.st_nlink)
		1649	w->attr.st_nlink = 1;
		1650	}
		1651
		1652	static void
		1653	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1654	{
		1655	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1656
		1657	/* we copy this here each the time so that */
		1658	/* prev has the old value when the callback gets invoked */
		1659	w->prev = w->attr;
		1660	ev_stat_stat (EV_A_ w);
		1661
		1662	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1663	ev_feed_event (EV_A_ w, EV_STAT);
		1664	}
		1665
		1666	void
		1667	ev_stat_start (EV_P_ ev_stat *w)
		1668	{
		1669	if (expect_false (ev_is_active (w)))
		1670	return;
		1671
		1672	/* since we use memcmp, we need to clear any padding data etc. */
		1673	memset (&w->prev, 0, sizeof (ev_statdata));
		1674	memset (&w->attr, 0, sizeof (ev_statdata));
		1675
		1676	ev_stat_stat (EV_A_ w);
		1677
		1678	if (w->interval < MIN_STAT_INTERVAL)
		1679	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1680
		1681	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1682	ev_set_priority (&w->timer, ev_priority (w));
		1683	ev_timer_start (EV_A_ &w->timer);
		1684
		1685	ev_start (EV_A_ (W)w, 1);
		1686	}
		1687
		1688	void
		1689	ev_stat_stop (EV_P_ ev_stat *w)
		1690	{
		1691	ev_clear_pending (EV_A_ (W)w);
		1692	if (expect_false (!ev_is_active (w)))
		1693	return;
		1694
		1695	ev_timer_stop (EV_A_ &w->timer);
		1696
		1697	ev_stop (EV_A_ (W)w);
		1698	}
		1699	#endif
		1700
		1701	void
		1702	ev_idle_start (EV_P_ ev_idle *w)
		1703	{
		1704	if (expect_false (ev_is_active (w)))
		1705	return;
		1706
		1707	ev_start (EV_A_ (W)w, ++idlecnt);
		1708	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1709	idles [idlecnt - 1] = w;
		1710	}
		1711
		1712	void
		1713	ev_idle_stop (EV_P_ ev_idle *w)
		1714	{
		1715	ev_clear_pending (EV_A_ (W)w);
		1716	if (expect_false (!ev_is_active (w)))
		1717	return;
		1718
		1719	{
		1720	int active = ((W)w)->active;
		1721	idles [active - 1] = idles [--idlecnt];
		1722	((W)idles [active - 1])->active = active;
		1723	}
		1724
		1725	ev_stop (EV_A_ (W)w);
		1726	}
		1727
		1728	void
		1729	ev_prepare_start (EV_P_ ev_prepare *w)
		1730	{
		1731	if (expect_false (ev_is_active (w)))
		1732	return;
		1733
		1734	ev_start (EV_A_ (W)w, ++preparecnt);
		1735	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1736	prepares [preparecnt - 1] = w;
		1737	}
		1738
		1739	void
		1740	ev_prepare_stop (EV_P_ ev_prepare *w)
		1741	{
		1742	ev_clear_pending (EV_A_ (W)w);
		1743	if (expect_false (!ev_is_active (w)))
		1744	return;
		1745
		1746	{
		1747	int active = ((W)w)->active;
		1748	prepares [active - 1] = prepares [--preparecnt];
		1749	((W)prepares [active - 1])->active = active;
		1750	}
		1751
		1752	ev_stop (EV_A_ (W)w);
		1753	}
		1754
		1755	void
		1756	ev_check_start (EV_P_ ev_check *w)
		1757	{
		1758	if (expect_false (ev_is_active (w)))
		1759	return;
		1760
		1761	ev_start (EV_A_ (W)w, ++checkcnt);
		1762	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1763	checks [checkcnt - 1] = w;
		1764	}
		1765
		1766	void
		1767	ev_check_stop (EV_P_ ev_check *w)
		1768	{
		1769	ev_clear_pending (EV_A_ (W)w);
		1770	if (expect_false (!ev_is_active (w)))
		1771	return;
		1772
		1773	{
		1774	int active = ((W)w)->active;
		1775	checks [active - 1] = checks [--checkcnt];
		1776	((W)checks [active - 1])->active = active;
		1777	}
		1778
		1779	ev_stop (EV_A_ (W)w);
		1780	}
		1781
		1782	#if EV_EMBED_ENABLE
		1783	void noinline
		1784	ev_embed_sweep (EV_P_ ev_embed *w)
		1785	{
		1786	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1787	}
		1788
		1789	static void
		1790	embed_cb (EV_P_ ev_io *io, int revents)
		1791	{
		1792	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1793
		1794	if (ev_cb (w))
		1795	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1796	else
		1797	ev_embed_sweep (loop, w);
		1798	}
		1799
		1800	void
		1801	ev_embed_start (EV_P_ ev_embed *w)
		1802	{
		1803	if (expect_false (ev_is_active (w)))
		1804	return;
		1805
		1806	{
		1807	struct ev_loop *loop = w->loop;
		1808	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1809	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1810	}
		1811
		1812	ev_set_priority (&w->io, ev_priority (w));
		1813	ev_io_start (EV_A_ &w->io);
		1814
		1815	ev_start (EV_A_ (W)w, 1);
		1816	}
		1817
		1818	void
		1819	ev_embed_stop (EV_P_ ev_embed *w)
		1820	{
		1821	ev_clear_pending (EV_A_ (W)w);
		1822	if (expect_false (!ev_is_active (w)))
		1823	return;
		1824
		1825	ev_io_stop (EV_A_ &w->io);
		1826
		1827	ev_stop (EV_A_ (W)w);
		1828	}
		1829	#endif
		1830
1291	/*****************************************************************************/	1831	/*****************************************************************************/
1292		1832
1293	struct ev_once	1833	struct ev_once
1294	{	1834	{
1295	struct ev_io io;	1835	ev_io io;
1296	struct ev_timer to;	1836	ev_timer to;
1297	void (*cb)(int revents, void *arg);	1837	void (*cb)(int revents, void *arg);
1298	void *arg;	1838	void *arg;
1299	};	1839	};
1300		1840
1301	static void	1841	static void
…		…
1304	void (*cb)(int revents, void *arg) = once->cb;	1844	void (*cb)(int revents, void *arg) = once->cb;
1305	void *arg = once->arg;	1845	void *arg = once->arg;
1306		1846
1307	ev_io_stop (EV_A_ &once->io);	1847	ev_io_stop (EV_A_ &once->io);
1308	ev_timer_stop (EV_A_ &once->to);	1848	ev_timer_stop (EV_A_ &once->to);
1309	free (once);	1849	ev_free (once);
1310		1850
1311	cb (revents, arg);	1851	cb (revents, arg);
1312	}	1852	}
1313		1853
1314	static void	1854	static void
1315	once_cb_io (EV_P_ struct ev_io *w, int revents)	1855	once_cb_io (EV_P_ ev_io *w, int revents)
1316	{	1856	{
1317	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1857	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1318	}	1858	}
1319		1859
1320	static void	1860	static void
1321	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1861	once_cb_to (EV_P_ ev_timer *w, int revents)
1322	{	1862	{
1323	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1863	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1324	}	1864	}
1325		1865
1326	void	1866	void
1327	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1867	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1328	{	1868	{
1329	struct ev_once *once = malloc (sizeof (struct ev_once));	1869	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1330		1870
1331	if (!once)	1871	if (expect_false (!once))
		1872	{
1332	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1873	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1333	else	1874	return;
1334	{	1875	}
		1876
1335	once->cb = cb;	1877	once->cb = cb;
1336	once->arg = arg;	1878	once->arg = arg;
1337		1879
1338	ev_watcher_init (&once->io, once_cb_io);	1880	ev_init (&once->io, once_cb_io);
1339	if (fd >= 0)	1881	if (fd >= 0)
1340	{	1882	{
1341	ev_io_set (&once->io, fd, events);	1883	ev_io_set (&once->io, fd, events);
1342	ev_io_start (EV_A_ &once->io);	1884	ev_io_start (EV_A_ &once->io);
1343	}	1885	}
1344		1886
1345	ev_watcher_init (&once->to, once_cb_to);	1887	ev_init (&once->to, once_cb_to);
1346	if (timeout >= 0.)	1888	if (timeout >= 0.)
1347	{	1889	{
1348	ev_timer_set (&once->to, timeout, 0.);	1890	ev_timer_set (&once->to, timeout, 0.);
1349	ev_timer_start (EV_A_ &once->to);	1891	ev_timer_start (EV_A_ &once->to);
1350	}
1351	}	1892	}
1352	}	1893	}
1353		1894
		1895	#ifdef __cplusplus
		1896	}
		1897	#endif
		1898

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