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

Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		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 ev_set_syserr_cb (void (cb)(const char msg))
		231	{
		232	syserr_cb = cb;
		233	}
		234
		235	static void
		236	syserr (const char *msg)
		237	{
		238	if (!msg)
		239	msg = "(libev) system error";
		240
		241	if (syserr_cb)
		242	syserr_cb (msg);
		243	else
		244	{
		245	perror (msg);
		246	abort ();
		247	}
		248	}
		249
		250	static void (alloc)(void *ptr, long size);
		251
		252	void ev_set_allocator (void (cb)(void *ptr, long size))
		253	{
		254	alloc = cb;
		255	}
		256
		257	static void *
		258	ev_realloc (void *ptr, long size)
		259	{
		260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		261
		262	if (!ptr && size)
		263	{
		264	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		265	abort ();
		266	}
		267
		268	return ptr;
		269	}
		270
		271	#define ev_malloc(size) ev_realloc (0, (size))
		272	#define ev_free(ptr) ev_realloc ((ptr), 0)
		273
		274	/*****************************************************************************/
		275
122	typedef struct	276	typedef struct
123	{	277	{
124	struct ev_watcher_list *head;	278	WL head;
125	unsigned char events;	279	unsigned char events;
126	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
127	} ANFD;	284	} ANFD;
128		285
129	typedef struct	286	typedef struct
130	{	287	{
131	W w;	288	W w;
132	int events;	289	int events;
133	} ANPENDING;	290	} ANPENDING;
134		291
135	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
136		293
137	struct ev_loop	294	struct ev_loop
138	{	295	{
		296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	299	#include "ev_vars.h"
141	};
142	# undef VAR	300	#undef VAR
		301	};
143	# include "ev_wrap.h"	302	#include "ev_wrap.h"
		303
		304	static struct ev_loop default_loop_struct;
		305	struct ev_loop *ev_default_loop_ptr;
144		306
145	#else	307	#else
146		308
		309	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	311	#include "ev_vars.h"
149	# undef VAR	312	#undef VAR
		313
		314	static int ev_default_loop_ptr;
150		315
151	#endif	316	#endif
152		317
153	/*****************************************************************************/	318	/*****************************************************************************/
154		319
155	inline ev_tstamp	320	ev_tstamp noinline
156	ev_time (void)	321	ev_time (void)
157	{	322	{
158	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
159	struct timespec ts;	324	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	331	#endif
167	}	332	}
168		333
169	inline ev_tstamp	334	ev_tstamp inline_size
170	get_clock (void)	335	get_clock (void)
171	{	336	{
172	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
174	{	339	{
…		…
179	#endif	344	#endif
180		345
181	return ev_time ();	346	return ev_time ();
182	}	347	}
183		348
		349	#if EV_MULTIPLICITY
184	ev_tstamp	350	ev_tstamp
185	ev_now (EV_P)	351	ev_now (EV_P)
186	{	352	{
187	return rt_now;	353	return ev_rt_now;
188	}	354	}
		355	#endif
189		356
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	357	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		358
192	#define array_needsize(base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
194	{ \	361	{ \
195	int newcnt = cur; \	362	int newcnt = cur; \
196	do \	363	do \
197	{ \	364	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	365	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	366	} \
200	while ((cnt) > newcnt); \	367	while ((cnt) > newcnt); \
201	\	368	\
202	base = realloc (base, sizeof (base) (newcnt)); \	369	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	370	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	371	cur = newcnt; \
205	}	372	}
		373
		374	#define array_slim(type,stem) \
		375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		376	{ \
		377	stem ## max = array_roundsize (stem ## cnt >> 1); \
		378	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		380	}
		381
		382	#define array_free(stem, idx) \
		383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		384
207	/*****************************************************************************/	385	/*****************************************************************************/
208		386
209	static void	387	void inline_size
210	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
211	{	389	{
212	while (count--)	390	while (count--)
213	{	391	{
214	base->head = 0;	392	base->head = 0;
…		…
217		395
218	++base;	396	++base;
219	}	397	}
220	}	398	}
221		399
222	static void	400	void noinline
223	event (EV_P_ W w, int events)	401	ev_feed_event (EV_P_ void *w, int revents)
224	{	402	{
225	if (w->pending)	403	W w_ = (W)w;
		404
		405	if (expect_false (w_->pending))
226	{	406	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	408	return;
229	}	409	}
230		410
231	w->pending = ++pendingcnt [ABSPRI (w)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	415	}
236		416
237	static void	417	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	418	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	419	{
240	int i;	420	int i;
241		421
242	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
244	}	424	}
245		425
246	static void	426	void inline_speed
247	fd_event (EV_P_ int fd, int events)	427	fd_event (EV_P_ int fd, int revents)
248	{	428	{
249	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	430	ev_io *w;
251		431
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	432	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
253	{	433	{
254	int ev = w->events & events;	434	int ev = w->events & revents;
255		435
256	if (ev)	436	if (ev)
257	event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
258	}	438	}
		439	}
		440
		441	void
		442	ev_feed_fd_event (EV_P_ int fd, int revents)
		443	{
		444	fd_event (EV_A_ fd, revents);
259	}	445	}
260		446
261	/*****************************************************************************/	447	/*****************************************************************************/
262		448
263	static void	449	void inline_size
264	fd_reify (EV_P)	450	fd_reify (EV_P)
265	{	451	{
266	int i;	452	int i;
267		453
268	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
269	{	455	{
270	int fd = fdchanges [i];	456	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	458	ev_io *w;
273		459
274	int events = 0;	460	int events = 0;
275		461
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	462	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
277	events \|= w->events;	463	events \|= w->events;
278		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
279	anfd->reify = 0;	474	anfd->reify = 0;
280		475
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	477	anfd->events = events;
285	}
286	}	478	}
287		479
288	fdchangecnt = 0;	480	fdchangecnt = 0;
289	}	481	}
290		482
291	static void	483	void inline_size
292	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
293	{	485	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	486	if (expect_false (anfds [fd].reify))
295	return;	487	return;
296		488
297	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
298		490
299	++fdchangecnt;	491	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
302	}	494	}
303		495
304	static void	496	void inline_speed
305	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
306	{	498	{
307	struct ev_io *w;	499	ev_io *w;
308		500
309	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
310	{	502	{
311	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	505	}
		506	}
		507
		508	int inline_size
		509	fd_valid (int fd)
		510	{
		511	#ifdef _WIN32
		512	return _get_osfhandle (fd) != -1;
		513	#else
		514	return fcntl (fd, F_GETFD) != -1;
		515	#endif
314	}	516	}
315		517
316	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
317	static void	519	static void noinline
318	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
319	{	521	{
320	int fd;	522	int fd;
321		523
322	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	525	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
326	}	528	}
327		529
328	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	531	static void noinline
330	fd_enomem (EV_P)	532	fd_enomem (EV_P)
331	{	533	{
332	int fd = anfdmax;	534	int fd;
333		535
334	while (fd--)	536	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	537	if (anfds [fd].events)
336	{	538	{
337	close (fd);
338	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
339	return;	540	return;
340	}	541	}
341	}	542	}
342		543
343	/* susually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
344	static void	545	static void noinline
345	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
346	{	547	{
347	int fd;	548	int fd;
348		549
349	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	551	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	552	if (anfds [fd].events)
352	{	553	{
353	anfds [fd].events = 0;	554	anfds [fd].events = 0;
354	fd_change (fd);	555	fd_change (EV_A_ fd);
355	}	556	}
356	}	557	}
357		558
358	/*****************************************************************************/	559	/*****************************************************************************/
359		560
360	static void	561	void inline_speed
361	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
362	{	563	{
363	WT w = heap [k];	564	WT w = heap [k];
364		565
365	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
366	{	567	{
367	heap [k] = heap [k >> 1];	568	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	569	((W)heap [k])->active = k + 1;
369	k >>= 1;	570	k >>= 1;
370	}	571	}
371		572
372	heap [k] = w;	573	heap [k] = w;
373	heap [k]->active = k + 1;	574	((W)heap [k])->active = k + 1;
374		575
375	}	576	}
376		577
377	static void	578	void inline_speed
378	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
379	{	580	{
380	WT w = heap [k];	581	WT w = heap [k];
381		582
382	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
388		589
389	if (w->at <= heap [j]->at)	590	if (w->at <= heap [j]->at)
390	break;	591	break;
391		592
392	heap [k] = heap [j];	593	heap [k] = heap [j];
393	heap [k]->active = k + 1;	594	((W)heap [k])->active = k + 1;
394	k = j;	595	k = j;
395	}	596	}
396		597
397	heap [k] = w;	598	heap [k] = w;
398	heap [k]->active = k + 1;	599	((W)heap [k])->active = k + 1;
		600	}
		601
		602	void inline_size
		603	adjustheap (WT *heap, int N, int k)
		604	{
		605	upheap (heap, k);
		606	downheap (heap, N, k);
399	}	607	}
400		608
401	/*****************************************************************************/	609	/*****************************************************************************/
402		610
403	typedef struct	611	typedef struct
404	{	612	{
405	struct ev_watcher_list *head;	613	WL head;
406	sig_atomic_t volatile gotsig;	614	sig_atomic_t volatile gotsig;
407	} ANSIG;	615	} ANSIG;
408		616
409	static ANSIG *signals;	617	static ANSIG *signals;
410	static int signalmax;	618	static int signalmax;
411		619
412	static int sigpipe [2];	620	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
		622	static ev_io sigev;
414		623
415	static void	624	void inline_size
416	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
417	{	626	{
418	while (count--)	627	while (count--)
419	{	628	{
420	base->head = 0;	629	base->head = 0;
…		…
425	}	634	}
426		635
427	static void	636	static void
428	sighandler (int signum)	637	sighandler (int signum)
429	{	638	{
		639	#if _WIN32
		640	signal (signum, sighandler);
		641	#endif
		642
430	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
431		644
432	if (!gotsig)	645	if (!gotsig)
433	{	646	{
434	int old_errno = errno;	647	int old_errno = errno;
…		…
436	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
437	errno = old_errno;	650	errno = old_errno;
438	}	651	}
439	}	652	}
440		653
		654	void noinline
		655	ev_feed_signal_event (EV_P_ int signum)
		656	{
		657	WL w;
		658
		659	#if EV_MULTIPLICITY
		660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		661	#endif
		662
		663	--signum;
		664
		665	if (signum < 0 \|\| signum >= signalmax)
		666	return;
		667
		668	signals [signum].gotsig = 0;
		669
		670	for (w = signals [signum].head; w; w = w->next)
		671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		672	}
		673
441	static void	674	static void
442	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
443	{	676	{
444	struct ev_watcher_list *w;
445	int signum;	677	int signum;
446		678
447	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
448	gotsig = 0;	680	gotsig = 0;
449		681
450	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
451	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
452	{	684	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	}	685	}
459		686
460	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
461	siginit (EV_P)	700	siginit (EV_P)
462	{	701	{
463	#ifndef WIN32	702	fd_intern (sigpipe [0]);
464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	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		704
472	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
473	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
474	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
475	}	708	}
476		709
477	/*****************************************************************************/	710	/*****************************************************************************/
478		711
		712	static ev_child *childs [PID_HASHSIZE];
		713
479	#ifndef WIN32	714	#ifndef _WIN32
		715
		716	static ev_signal childev;
480		717
481	#ifndef WCONTINUED	718	#ifndef WCONTINUED
482	# define WCONTINUED 0	719	# define WCONTINUED 0
483	#endif	720	#endif
484		721
485	static void	722	void inline_speed
486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
487	{	724	{
488	struct ev_child *w;	725	ev_child *w;
489		726
490	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	727	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
491	if (w->pid == pid \|\| !w->pid)	728	if (w->pid == pid \|\| !w->pid)
492	{	729	{
493	w->priority = sw->priority; /* need to do it now */	730	ev_priority (w) = ev_priority (sw); /* need to do it now */
494	w->rpid = pid;	731	w->rpid = pid;
495	w->rstatus = status;	732	w->rstatus = status;
496	event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
497	}	734	}
498	}	735	}
499		736
500	static void	737	static void
501	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
502	{	739	{
503	int pid, status;	740	int pid, status;
504		741
505	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
506	{	743	{
507	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
508	event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509		747
510	child_reap (EV_A_ sw, pid, pid, status);	748	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 */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512	}	750	}
513	}	751	}
514		752
515	#endif	753	#endif
516		754
517	/*****************************************************************************/	755	/*****************************************************************************/
518		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
519	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
520	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
521	#endif	762	#endif
522	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
523	# include "ev_epoll.c"	764	# include "ev_epoll.c"
524	#endif	765	#endif
525	#if EV_USEV_POLL	766	#if EV_USE_POLL
526	# include "ev_poll.c"	767	# include "ev_poll.c"
527	#endif	768	#endif
528	#if EV_USE_SELECT	769	#if EV_USE_SELECT
529	# include "ev_select.c"	770	# include "ev_select.c"
530	#endif	771	#endif
…		…
540	{	781	{
541	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
542	}	783	}
543		784
544	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
545	static int	786	int inline_size
546	enable_secure (void)	787	enable_secure (void)
547	{	788	{
548	#ifdef WIN32	789	#ifdef _WIN32
549	return 0;	790	return 0;
550	#else	791	#else
551	return getuid () != geteuid ()	792	return getuid () != geteuid ()
552	\|\| getgid () != getegid ();	793	\|\| getgid () != getegid ();
553	#endif	794	#endif
554	}	795	}
555		796
556	int	797	unsigned int
557	ev_method (EV_P)	798	ev_supported_backends (void)
558	{	799	{
559	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	\| EVBACKEND_KQUEUE
		834	\| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
560	}	841	}
561		842
562	static void	843	static void
563	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
564	{	845	{
565	if (!method)	846	if (!backend)
566	{	847	{
567	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
568	{	849	{
569	struct timespec ts;	850	struct timespec ts;
570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571	have_monotonic = 1;	852	have_monotonic = 1;
572	}	853	}
573	#endif	854	#endif
574		855
575	rt_now = ev_time ();	856	ev_rt_now = ev_time ();
576	mn_now = get_clock ();	857	mn_now = get_clock ();
577	now_floor = mn_now;	858	now_floor = mn_now;
578	rtmn_diff = rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
579		860
580	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
581	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
582	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
583	else
584	methods = EVMETHOD_ANY;
585		865
586	method = 0;	866	if (!(flags & 0x0000ffffUL))
		867	flags \|= ev_recommended_backends ();
		868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		872	#endif
587	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589	#endif	875	#endif
590	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592	#endif	878	#endif
593	#if EV_USEV_POLL	879	#if EV_USE_POLL
594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595	#endif	881	#endif
596	#if EV_USE_SELECT	882	#if EV_USE_SELECT
597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598	#endif	884	#endif
599	}
600	}
601		885
602	void	886	ev_init (&sigev, sigcb);
		887	ev_set_priority (&sigev, EV_MAXPRI);
		888	}
		889	}
		890
		891	static void
603	loop_destroy (EV_P)	892	loop_destroy (EV_P)
604	{	893	{
		894	int i;
		895
		896	#if EV_USE_PORT
		897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		898	#endif
605	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607	#endif	901	#endif
608	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610	#endif	904	#endif
611	#if EV_USEV_POLL	905	#if EV_USE_POLL
612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613	#endif	907	#endif
614	#if EV_USE_SELECT	908	#if EV_USE_SELECT
615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616	#endif	910	#endif
617		911
618	method = 0;	912	for (i = NUMPRI; i--; )
619	/TODO/	913	array_free (pending, [i]);
620	}
621		914
622	void	915	/* have to use the microsoft-never-gets-it-right macro */
		916	array_free (fdchange, EMPTY0);
		917	array_free (timer, EMPTY0);
		918	#if EV_PERIODIC_ENABLE
		919	array_free (periodic, EMPTY0);
		920	#endif
		921	array_free (idle, EMPTY0);
		922	array_free (prepare, EMPTY0);
		923	array_free (check, EMPTY0);
		924
		925	backend = 0;
		926	}
		927
		928	static void
623	loop_fork (EV_P)	929	loop_fork (EV_P)
624	{	930	{
625	/TODO/	931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
626	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628	#endif	939	#endif
629	#if EV_USE_KQUEUE	940
630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	941	if (ev_is_active (&sigev))
631	#endif	942	{
		943	/* default loop */
		944
		945	ev_ref (EV_A);
		946	ev_io_stop (EV_A_ &sigev);
		947	close (sigpipe [0]);
		948	close (sigpipe [1]);
		949
		950	while (pipe (sigpipe))
		951	syserr ("(libev) error creating pipe");
		952
		953	siginit (EV_A);
		954	}
		955
		956	postfork = 0;
632	}	957	}
633		958
634	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
635	struct ev_loop *	960	struct ev_loop *
636	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
637	{	962	{
638	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	963	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
639		964
		965	memset (loop, 0, sizeof (struct ev_loop));
		966
640	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
641		968
642	if (ev_methods (EV_A))	969	if (ev_backend (EV_A))
643	return loop;	970	return loop;
644		971
645	return 0;	972	return 0;
646	}	973	}
647		974
648	void	975	void
649	ev_loop_destroy (EV_P)	976	ev_loop_destroy (EV_P)
650	{	977	{
651	loop_destroy (EV_A);	978	loop_destroy (EV_A);
652	free (loop);	979	ev_free (loop);
653	}	980	}
654		981
655	void	982	void
656	ev_loop_fork (EV_P)	983	ev_loop_fork (EV_P)
657	{	984	{
658	loop_fork (EV_A);	985	postfork = 1;
659	}	986	}
660		987
661	#endif	988	#endif
662		989
663	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
664	struct ev_loop default_loop_struct;
665	static struct ev_loop *default_loop;
666
667	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
668	#else	993	#else
669	static int default_loop;
670
671	int	994	int
		995	ev_default_loop (unsigned int flags)
672	#endif	996	#endif
673	ev_default_loop (int methods)
674	{	997	{
675	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
676	if (pipe (sigpipe))	999	if (pipe (sigpipe))
677	return 0;	1000	return 0;
678		1001
679	if (!default_loop)	1002	if (!ev_default_loop_ptr)
680	{	1003	{
681	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
682	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683	#else	1006	#else
684	default_loop = 1;	1007	ev_default_loop_ptr = 1;
685	#endif	1008	#endif
686		1009
687	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
688		1011
689	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
690	{	1013	{
691	ev_watcher_init (&sigev, sigcb);
692	ev_set_priority (&sigev, EV_MAXPRI);
693	siginit (EV_A);	1014	siginit (EV_A);
694		1015
695	#ifndef WIN32	1016	#ifndef _WIN32
696	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
697	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
698	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
699	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
700	#endif	1021	#endif
701	}	1022	}
702	else	1023	else
703	default_loop = 0;	1024	ev_default_loop_ptr = 0;
704	}	1025	}
705		1026
706	return default_loop;	1027	return ev_default_loop_ptr;
707	}	1028	}
708		1029
709	void	1030	void
710	ev_default_destroy (void)	1031	ev_default_destroy (void)
711	{	1032	{
		1033	#if EV_MULTIPLICITY
712	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
		1035	#endif
713		1036
		1037	#ifndef _WIN32
714	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
715	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
		1040	#endif
716		1041
717	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
718	ev_io_stop (EV_A_ &sigev);	1043	ev_io_stop (EV_A_ &sigev);
719		1044
720	close (sigpipe [0]); sigpipe [0] = 0;	1045	close (sigpipe [0]); sigpipe [0] = 0;
…		…
722		1047
723	loop_destroy (EV_A);	1048	loop_destroy (EV_A);
724	}	1049	}
725		1050
726	void	1051	void
727	ev_default_fork (EV_P)	1052	ev_default_fork (void)
728	{	1053	{
729	loop_fork (EV_A);	1054	#if EV_MULTIPLICITY
		1055	struct ev_loop *loop = ev_default_loop_ptr;
		1056	#endif
730		1057
731	ev_io_stop (EV_A_ &sigev);	1058	if (backend)
732	close (sigpipe [0]);	1059	postfork = 1;
733	close (sigpipe [1]);
734	pipe (sigpipe);
735
736	ev_ref (EV_A); /* signal watcher */
737	siginit (EV_A);
738	}	1060	}
739		1061
740	/*****************************************************************************/	1062	/*****************************************************************************/
741		1063
742	static void	1064	int inline_size
		1065	any_pending (EV_P)
		1066	{
		1067	int pri;
		1068
		1069	for (pri = NUMPRI; pri--; )
		1070	if (pendingcnt [pri])
		1071	return 1;
		1072
		1073	return 0;
		1074	}
		1075
		1076	void inline_speed
743	call_pending (EV_P)	1077	call_pending (EV_P)
744	{	1078	{
745	int pri;	1079	int pri;
746		1080
747	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
748	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
749	{	1083	{
750	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
751		1085
752	if (p->w)	1086	if (expect_true (p->w))
753	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
754	p->w->pending = 0;	1090	p->w->pending = 0;
755	p->w->cb (EV_A_ p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
756	}	1092	}
757	}	1093	}
758	}	1094	}
759		1095
760	static void	1096	void inline_size
761	timers_reify (EV_P)	1097	timers_reify (EV_P)
762	{	1098	{
763	while (timercnt && timers [0]->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
764	{	1100	{
765	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
		1102
		1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
766		1104
767	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
768	if (w->repeat)	1106	if (w->repeat)
769	{	1107	{
770	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
771	w->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
772	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
773	}	1115	}
774	else	1116	else
775	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
776		1118
777	event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
778	}	1120	}
779	}	1121	}
780		1122
781	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
782	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
783	{	1126	{
784	while (periodiccnt && periodics [0]->at <= rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
785	{	1128	{
786	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
		1130
		1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
787		1132
788	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
789	if (w->interval)	1134	if (w->reschedule_cb)
790	{	1135	{
		1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1138	downheap ((WT *)periodics, periodiccnt, 0);
		1139	}
		1140	else if (w->interval)
		1141	{
791	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1142	((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));	1143	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);	1144	downheap ((WT *)periodics, periodiccnt, 0);
794	}	1145	}
795	else	1146	else
796	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
797		1148
798	event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
799	}	1150	}
800	}	1151	}
801		1152
802	static void	1153	static void noinline
803	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
804	{	1155	{
805	int i;	1156	int i;
806		1157
807	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
808	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
809	{	1160	{
810	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
811		1162
		1163	if (w->reschedule_cb)
		1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
812	if (w->interval)	1165	else if (w->interval)
813	{
814	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1166	((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	}	1167	}
825	}
826		1168
827	inline int	1169	/* now rebuild the heap */
		1170	for (i = periodiccnt >> 1; i--; )
		1171	downheap ((WT *)periodics, periodiccnt, i);
		1172	}
		1173	#endif
		1174
		1175	int inline_size
828	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
829	{	1177	{
830	mn_now = get_clock ();	1178	mn_now = get_clock ();
831		1179
832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
833	{	1181	{
834	rt_now = rtmn_diff + mn_now;	1182	ev_rt_now = rtmn_diff + mn_now;
835	return 0;	1183	return 0;
836	}	1184	}
837	else	1185	else
838	{	1186	{
839	now_floor = mn_now;	1187	now_floor = mn_now;
840	rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
841	return 1;	1189	return 1;
842	}	1190	}
843	}	1191	}
844		1192
845	static void	1193	void inline_size
846	time_update (EV_P)	1194	time_update (EV_P)
847	{	1195	{
848	int i;	1196	int i;
849		1197
850	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
852	{	1200	{
853	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
854	{	1202	{
855	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
856		1204
857	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
858	{	1214	{
859	rtmn_diff = rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
860		1216
861	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
862	return; /* all is well */	1218	return; /* all is well */
863		1219
864	rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
865	mn_now = get_clock ();	1221	mn_now = get_clock ();
866	now_floor = mn_now;	1222	now_floor = mn_now;
867	}	1223	}
868		1224
		1225	# if EV_PERIODIC_ENABLE
869	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
870	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
871	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
872	}	1230	}
873	}	1231	}
874	else	1232	else
875	#endif	1233	#endif
876	{	1234	{
877	rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
878		1236
879	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
880	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
881	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
882		1242
883	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
884	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
885	timers [i]->at += rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
886	}	1246	}
887		1247
888	mn_now = rt_now;	1248	mn_now = ev_rt_now;
889	}	1249	}
890	}	1250	}
891		1251
892	void	1252	void
893	ev_ref (EV_P)	1253	ev_ref (EV_P)
…		…
904	static int loop_done;	1264	static int loop_done;
905		1265
906	void	1266	void
907	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
908	{	1268	{
909	double block;
910	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
911		1272
912	do	1273	while (activecnt)
913	{	1274	{
914	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
915	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
916	{	1277	{
917	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
918	call_pending (EV_A);	1279	call_pending (EV_A);
919	}	1280	}
920		1281
		1282	/* we might have forked, so reify kernel state if necessary */
		1283	if (expect_false (postfork))
		1284	loop_fork (EV_A);
		1285
921	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
922	fd_reify (EV_A);	1287	fd_reify (EV_A);
923		1288
924	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
925		1292
926	/* we only need this for !monotonic clockor timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
927	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
928	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
929	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
930	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
931	else	1301	else
932	#endif	1302	#endif
933	{	1303	{
934	rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
935	mn_now = rt_now;	1305	mn_now = ev_rt_now;
936	}	1306	}
937		1307
938	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
939	block = 0.;
940	else
941	{
942	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
943		1309
944	if (timercnt)	1310	if (timercnt)
945	{	1311	{
946	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
947	if (block > to) block = to;	1313	if (block > to) block = to;
948	}	1314	}
949		1315
		1316	#if EV_PERIODIC_ENABLE
950	if (periodiccnt)	1317	if (periodiccnt)
951	{	1318	{
952	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
953	if (block > to) block = to;	1320	if (block > to) block = to;
954	}	1321	}
		1322	#endif
955		1323
956	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
957	}	1325	}
958		1326
959	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
960		1329
961	/* update rt_now, do magic */	1330	/* update ev_rt_now, do magic */
962	time_update (EV_A);	1331	time_update (EV_A);
963		1332
964	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
965	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
966	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
967		1338
968	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
969	if (!pendingcnt)	1340	if (idlecnt && !any_pending (EV_A))
970	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
971		1342
972	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
973	if (checkcnt)	1344	if (expect_false (checkcnt))
974	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
975		1346
976	call_pending (EV_A);	1347	call_pending (EV_A);
977	}
978	while (activecnt && !loop_done);
979		1348
980	if (loop_done != 2)	1349	if (expect_false (loop_done))
981	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
982	}	1355	}
983		1356
984	void	1357	void
985	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
986	{	1359	{
987	loop_done = how;	1360	loop_done = how;
988	}	1361	}
989		1362
990	/*****************************************************************************/	1363	/*****************************************************************************/
991		1364
992	inline void	1365	void inline_size
993	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
994	{	1367	{
995	elem->next = *head;	1368	elem->next = *head;
996	*head = elem;	1369	*head = elem;
997	}	1370	}
998		1371
999	inline void	1372	void inline_size
1000	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1001	{	1374	{
1002	while (*head)	1375	while (*head)
1003	{	1376	{
1004	if (*head == elem)	1377	if (*head == elem)
…		…
1009		1382
1010	head = &(*head)->next;	1383	head = &(*head)->next;
1011	}	1384	}
1012	}	1385	}
1013		1386
1014	inline void	1387	void inline_speed
1015	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1016	{	1389	{
1017	if (w->pending)	1390	if (w->pending)
1018	{	1391	{
1019	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1020	w->pending = 0;	1393	w->pending = 0;
1021	}	1394	}
1022	}	1395	}
1023		1396
1024	inline void	1397	void inline_speed
1025	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1026	{	1399	{
1027	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1028	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1029		1402
1030	w->active = active;	1403	w->active = active;
1031	ev_ref (EV_A);	1404	ev_ref (EV_A);
1032	}	1405	}
1033		1406
1034	inline void	1407	void inline_size
1035	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1036	{	1409	{
1037	ev_unref (EV_A);	1410	ev_unref (EV_A);
1038	w->active = 0;	1411	w->active = 0;
1039	}	1412	}
1040		1413
1041	/*****************************************************************************/	1414	/*****************************************************************************/
1042		1415
1043	void	1416	void
1044	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1045	{	1418	{
1046	int fd = w->fd;	1419	int fd = w->fd;
1047		1420
1048	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1049	return;	1422	return;
1050		1423
1051	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1052		1425
1053	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
1054	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1055	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1056		1429
1057	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1058	}	1431	}
1059		1432
1060	void	1433	void
1061	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1062	{	1435	{
1063	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1065	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1066		1441
1067	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1068	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1069		1444
1070	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1071	}	1446	}
1072		1447
1073	void	1448	void
1074	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1075	{	1450	{
1076	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1077	return;	1452	return;
1078		1453
1079	w->at += mn_now;	1454	((WT)w)->at += mn_now;
1080		1455
1081	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1082		1457
1083	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1084	array_needsize (timers, timermax, timercnt, );	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1085	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1086	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1087	}
1088		1462
		1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1464	}
		1465
1089	void	1466	void
1090	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1091	{	1468	{
1092	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1093	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1094	return;	1471	return;
1095		1472
		1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1474
1096	if (w->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1097	{	1476	{
1098	timers [w->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1099	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1100	}	1479	}
1101		1480
1102	w->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1103		1482
1104	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1105	}	1484	}
1106		1485
1107	void	1486	void
1108	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1109	{	1488	{
1110	if (ev_is_active (w))	1489	if (ev_is_active (w))
1111	{	1490	{
1112	if (w->repeat)	1491	if (w->repeat)
1113	{	1492	{
1114	w->at = mn_now + w->repeat;	1493	((WT)w)->at = mn_now + w->repeat;
1115	downheap ((WT *)timers, timercnt, w->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1116	}	1495	}
1117	else	1496	else
1118	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1119	}	1498	}
1120	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1121	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1122	}	1504	}
1123		1505
		1506	#if EV_PERIODIC_ENABLE
1124	void	1507	void
1125	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1126	{	1509	{
1127	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1128	return;	1511	return;
1129		1512
		1513	if (w->reschedule_cb)
		1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1515	else if (w->interval)
		1516	{
1130	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1131
1132	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1133	if (w->interval)
1134	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1520	}
1135		1521
1136	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1137	array_needsize (periodics, periodicmax, periodiccnt, );	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1138	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1139	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1140	}
1141		1526
		1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1528	}
		1529
1142	void	1530	void
1143	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1144	{	1532	{
1145	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1147	return;	1535	return;
1148		1536
		1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1538
1149	if (w->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1150	{	1540	{
1151	periodics [w->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1152	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1153	}	1543	}
1154		1544
1155	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1156	}	1546	}
1157		1547
1158	void	1548	void
		1549	ev_periodic_again (EV_P_ ev_periodic *w)
		1550	{
		1551	/* TODO: use adjustheap and recalculation */
		1552	ev_periodic_stop (EV_A_ w);
		1553	ev_periodic_start (EV_A_ w);
		1554	}
		1555	#endif
		1556
		1557	void
1159	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1160	{	1559	{
1161	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1162	return;	1561	return;
1163		1562
1164	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1165	array_needsize (idles, idlemax, idlecnt, );	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1166	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1167	}	1566	}
1168		1567
1169	void	1568	void
1170	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1171	{	1570	{
1172	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1173	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1174	return;	1573	return;
1175		1574
		1575	{
		1576	int active = ((W)w)->active;
1176	idles [w->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1177	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1178	}	1582	}
1179		1583
1180	void	1584	void
1181	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1182	{	1586	{
1183	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1184	return;	1588	return;
1185		1589
1186	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1187	array_needsize (prepares, preparemax, preparecnt, );	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1188	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1189	}	1593	}
1190		1594
1191	void	1595	void
1192	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1193	{	1597	{
1194	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1195	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1196	return;	1600	return;
1197		1601
		1602	{
		1603	int active = ((W)w)->active;
1198	prepares [w->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1199	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1200	}	1609	}
1201		1610
1202	void	1611	void
1203	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1204	{	1613	{
1205	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1206	return;	1615	return;
1207		1616
1208	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1209	array_needsize (checks, checkmax, checkcnt, );	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1210	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1211	}	1620	}
1212		1621
1213	void	1622	void
1214	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1215	{	1624	{
1216	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1217	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1218	return;	1627	return;
1219		1628
		1629	{
		1630	int active = ((W)w)->active;
1220	checks [w->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1221	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1222	}	1636	}
1223		1637
1224	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1225	# define SA_RESTART 0	1639	# define SA_RESTART 0
1226	#endif	1640	#endif
1227		1641
1228	void	1642	void
1229	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1230	{	1644	{
1231	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1232	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1233	#endif	1647	#endif
1234	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1235	return;	1649	return;
1236		1650
1237	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1238		1652
1239	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1240	array_needsize (signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1241	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1242		1656
1243	if (!w->next)	1657	if (!((WL)w)->next)
1244	{	1658	{
		1659	#if _WIN32
		1660	signal (w->signum, sighandler);
		1661	#else
1245	struct sigaction sa;	1662	struct sigaction sa;
1246	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1247	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
1248	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1665	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1249	sigaction (w->signum, &sa, 0);	1666	sigaction (w->signum, &sa, 0);
		1667	#endif
1250	}	1668	}
1251	}	1669	}
1252		1670
1253	void	1671	void
1254	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1255	{	1673	{
1256	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1257	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1258	return;	1676	return;
1259		1677
1260	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1261	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1262		1680
1263	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1264	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1265	}	1683	}
1266		1684
1267	void	1685	void
1268	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1269	{	1687	{
1270	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1271	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1272	#endif	1690	#endif
1273	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1274	return;	1692	return;
1275		1693
1276	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1277	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1278	}	1696	}
1279		1697
1280	void	1698	void
1281	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1282	{	1700	{
1283	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1284	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1285	return;	1703	return;
1286		1704
1287	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1288	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1289	}	1707	}
1290		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1291	/*****************************************************************************/	1819	/*****************************************************************************/
1292		1820
1293	struct ev_once	1821	struct ev_once
1294	{	1822	{
1295	struct ev_io io;	1823	ev_io io;
1296	struct ev_timer to;	1824	ev_timer to;
1297	void (cb)(int revents, void arg);	1825	void (cb)(int revents, void arg);
1298	void *arg;	1826	void *arg;
1299	};	1827	};
1300		1828
1301	static void	1829	static void
…		…
1304	void (cb)(int revents, void arg) = once->cb;	1832	void (cb)(int revents, void arg) = once->cb;
1305	void *arg = once->arg;	1833	void *arg = once->arg;
1306		1834
1307	ev_io_stop (EV_A_ &once->io);	1835	ev_io_stop (EV_A_ &once->io);
1308	ev_timer_stop (EV_A_ &once->to);	1836	ev_timer_stop (EV_A_ &once->to);
1309	free (once);	1837	ev_free (once);
1310		1838
1311	cb (revents, arg);	1839	cb (revents, arg);
1312	}	1840	}
1313		1841
1314	static void	1842	static void
1315	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1316	{	1844	{
1317	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1318	}	1846	}
1319		1847
1320	static void	1848	static void
1321	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1322	{	1850	{
1323	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1324	}	1852	}
1325		1853
1326	void	1854	void
1327	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1328	{	1856	{
1329	struct ev_once *once = malloc (sizeof (struct ev_once));	1857	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1330		1858
1331	if (!once)	1859	if (expect_false (!once))
		1860	{
1332	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1861	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1333	else	1862	return;
1334	{	1863	}
		1864
1335	once->cb = cb;	1865	once->cb = cb;
1336	once->arg = arg;	1866	once->arg = arg;
1337		1867
1338	ev_watcher_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1339	if (fd >= 0)	1869	if (fd >= 0)
1340	{	1870	{
1341	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1342	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1343	}	1873	}
1344		1874
1345	ev_watcher_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1346	if (timeout >= 0.)	1876	if (timeout >= 0.)
1347	{	1877	{
1348	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1349	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1350	}
1351	}	1880	}
1352	}	1881	}
1353		1882
		1883	#ifdef __cplusplus
		1884	}
		1885	#endif
		1886

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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 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC