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

Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <sys/time.h>
70	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
132	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
133	#else	200	#else
134	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
135	# define inline static	203	# define inline_size static
		204	# define noinline
136	#endif	205	#endif
137		206
138	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
140		209
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
144	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
147		219
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		221
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
150	/*****************************************************************************/	226	/*****************************************************************************/
151		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
152	typedef struct	278	typedef struct
153	{	279	{
154	struct ev_watcher_list *head;	280	WL head;
155	unsigned char events;	281	unsigned char events;
156	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
157	} ANFD;	286	} ANFD;
158		287
159	typedef struct	288	typedef struct
160	{	289	{
161	W w;	290	W w;
162	int events;	291	int events;
163	} ANPENDING;	292	} ANPENDING;
164		293
165	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
166		295
167	struct ev_loop	296	struct ev_loop
168	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	301	#include "ev_vars.h"
171	};
172	# undef VAR	302	#undef VAR
		303	};
173	# 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;
174		308
175	#else	309	#else
176		310
		311	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	313	#include "ev_vars.h"
179	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
180		317
181	#endif	318	#endif
182		319
183	/*****************************************************************************/	320	/*****************************************************************************/
184		321
185	inline ev_tstamp	322	ev_tstamp
186	ev_time (void)	323	ev_time (void)
187	{	324	{
188	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
189	struct timespec ts;	326	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	333	#endif
197	}	334	}
198		335
199	inline ev_tstamp	336	ev_tstamp inline_size
200	get_clock (void)	337	get_clock (void)
201	{	338	{
202	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
204	{	341	{
…		…
209	#endif	346	#endif
210		347
211	return ev_time ();	348	return ev_time ();
212	}	349	}
213		350
		351	#if EV_MULTIPLICITY
214	ev_tstamp	352	ev_tstamp
215	ev_now (EV_P)	353	ev_now (EV_P)
216	{	354	{
217	return rt_now;	355	return ev_rt_now;
218	}	356	}
		357	#endif
219		358
220	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
221		360
222	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
224	{ \	363	{ \
225	int newcnt = cur; \	364	int newcnt = cur; \
226	do \	365	do \
227	{ \	366	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	368	} \
230	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
231	\	370	\
232	base = realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
233	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	373	cur = newcnt; \
235	}	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;
236		386
237	/*****************************************************************************/	387	/*****************************************************************************/
238		388
239	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
240	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
241	{	419	{
242	while (count--)	420	while (count--)
243	{	421	{
244	base->head = 0;	422	base->head = 0;
…		…
247		425
248	++base;	426	++base;
249	}	427	}
250	}	428	}
251		429
252	static void	430	void inline_speed
253	event (EV_P_ W w, int events)
254	{
255	if (w->pending)
256	{
257	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
258	return;
259	}
260
261	w->pending = ++pendingcnt [ABSPRI (w)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263	pendings [ABSPRI (w)][w->pending - 1].w = w;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;
265	}
266
267	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{
270	int i;
271
272	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);
274	}
275
276	static void
277	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
278	{	432	{
279	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	434	ev_io *w;
281		435
282	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)
283	{	437	{
284	int ev = w->events & events;	438	int ev = w->events & revents;
285		439
286	if (ev)	440	if (ev)
287	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
288	}	442	}
289	}	443	}
290		444
291	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
292		450
293	static void	451	void inline_size
294	fd_reify (EV_P)	452	fd_reify (EV_P)
295	{	453	{
296	int i;	454	int i;
297		455
298	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
299	{	457	{
300	int fd = fdchanges [i];	458	int fd = fdchanges [i];
301	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
302	struct ev_io *w;	460	ev_io *w;
303		461
304	int events = 0;	462	int events = 0;
305		463
306	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)
307	events \|= w->events;	465	events \|= w->events;
308		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
309	anfd->reify = 0;	476	anfd->reify = 0;
310		477
311	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
312	anfd->events = events;	479	anfd->events = events;
313	}	480	}
314		481
315	fdchangecnt = 0;	482	fdchangecnt = 0;
316	}	483	}
317		484
318	static void	485	void inline_size
319	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
320	{	487	{
321	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
322	return;	489	return;
323		490
324	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
325		492
326	++fdchangecnt;	493	++fdchangecnt;
327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
328	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
329	}	496	}
330		497
331	static void	498	void inline_speed
332	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
333	{	500	{
334	struct ev_io *w;	501	ev_io *w;
335		502
336	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
337	{	504	{
338	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
339	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);
340	}	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
341	}	518	}
342		519
343	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
344	static void	521	static void noinline
345	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
346	{	523	{
347	int fd;	524	int fd;
348		525
349	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
350	if (anfds [fd].events)	527	if (anfds [fd].events)
351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
352	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
353	}	530	}
354		531
355	/* 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 */
356	static void	533	static void noinline
357	fd_enomem (EV_P)	534	fd_enomem (EV_P)
358	{	535	{
359	int fd;	536	int fd;
360		537
361	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
362	if (anfds [fd].events)	539	if (anfds [fd].events)
363	{	540	{
364	close (fd);
365	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
366	return;	542	return;
367	}	543	}
368	}	544	}
369		545
370	/* 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 */
371	static void	547	static void noinline
372	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
373	{	549	{
374	int fd;	550	int fd;
375		551
376	/* 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 */
…		…
382	}	558	}
383	}	559	}
384		560
385	/*****************************************************************************/	561	/*****************************************************************************/
386		562
387	static void	563	void inline_speed
388	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
389	{	565	{
390	WT w = heap [k];	566	WT w = heap [k];
391		567
392	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
399	heap [k] = w;	575	heap [k] = w;
400	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
401		577
402	}	578	}
403		579
404	static void	580	void inline_speed
405	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
406	{	582	{
407	WT w = heap [k];	583	WT w = heap [k];
408		584
409	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
423		599
424	heap [k] = w;	600	heap [k] = w;
425	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
426	}	602	}
427		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
		609	}
		610
428	/*****************************************************************************/	611	/*****************************************************************************/
429		612
430	typedef struct	613	typedef struct
431	{	614	{
432	struct ev_watcher_list *head;	615	WL head;
433	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
434	} ANSIG;	617	} ANSIG;
435		618
436	static ANSIG *signals;	619	static ANSIG *signals;
437	static int signalmax;	620	static int signalmax;
438		621
439	static int sigpipe [2];	622	static int sigpipe [2];
440	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
441	static struct ev_io sigev;	624	static ev_io sigev;
442		625
443	static void	626	void inline_size
444	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
445	{	628	{
446	while (count--)	629	while (count--)
447	{	630	{
448	base->head = 0;	631	base->head = 0;
…		…
453	}	636	}
454		637
455	static void	638	static void
456	sighandler (int signum)	639	sighandler (int signum)
457	{	640	{
		641	#if _WIN32
		642	signal (signum, sighandler);
		643	#endif
		644
458	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
459		646
460	if (!gotsig)	647	if (!gotsig)
461	{	648	{
462	int old_errno = errno;	649	int old_errno = errno;
…		…
464	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
465	errno = old_errno;	652	errno = old_errno;
466	}	653	}
467	}	654	}
468		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
469	static void	676	static void
470	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
471	{	678	{
472	struct ev_watcher_list *w;
473	int signum;	679	int signum;
474		680
475	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
476	gotsig = 0;	682	gotsig = 0;
477		683
478	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
479	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
480	{	686	ev_feed_signal_event (EV_A_ signum + 1);
481	signals [signum].gotsig = 0;
482
483	for (w = signals [signum].head; w; w = w->next)
484	event (EV_A_ (W)w, EV_SIGNAL);
485	}
486	}	687	}
487		688
488	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
489	siginit (EV_P)	702	siginit (EV_P)
490	{	703	{
491	#ifndef WIN32	704	fd_intern (sigpipe [0]);
492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495	/* rather than sort out wether we really need nb, set it */
496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498	#endif
499		706
500	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
501	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
502	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
503	}	710	}
504		711
505	/*****************************************************************************/	712	/*****************************************************************************/
506		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
507	#ifndef WIN32	716	#ifndef _WIN32
508		717
509	static struct ev_child *childs [PID_HASHSIZE];
510	static struct ev_signal childev;	718	static ev_signal childev;
511		719
512	#ifndef WCONTINUED	720	void inline_speed
513	# define WCONTINUED 0
514	#endif
515
516	static void
517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
518	{	722	{
519	struct ev_child *w;	723	ev_child *w;
520		724
521	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
522	if (w->pid == pid \|\| !w->pid)	726	if (w->pid == pid \|\| !w->pid)
523	{	727	{
524	ev_priority (w) = ev_priority (sw); /* need to do it now */	728	ev_priority (w) = ev_priority (sw); /* need to do it now */
525	w->rpid = pid;	729	w->rpid = pid;
526	w->rstatus = status;	730	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	732	}
529	}	733	}
530		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
531	static void	739	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
533	{	741	{
534	int pid, status;	742	int pid, status;
535		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
537	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
538	/* 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 */
539	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		754
541	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
542	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 */
543	}
544	}	757	}
545		758
546	#endif	759	#endif
547		760
548	/*****************************************************************************/	761	/*****************************************************************************/
549		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
550	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
552	#endif	768	#endif
553	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
571	{	787	{
572	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
573	}	789	}
574		790
575	/* 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 */
576	static int	792	int inline_size
577	enable_secure (void)	793	enable_secure (void)
578	{	794	{
579	#ifdef WIN32	795	#ifdef _WIN32
580	return 0;	796	return 0;
581	#else	797	#else
582	return getuid () != geteuid ()	798	return getuid () != geteuid ()
583	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
584	#endif	800	#endif
585	}	801	}
586		802
587	int	803	unsigned int
588	ev_method (EV_P)	804	ev_supported_backends (void)
589	{	805	{
590	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;
591	}	847	}
592		848
593	static void	849	static void
594	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
595	{	851	{
596	if (!method)	852	if (!backend)
597	{	853	{
598	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
599	{	855	{
600	struct timespec ts;	856	struct timespec ts;
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	858	have_monotonic = 1;
603	}	859	}
604	#endif	860	#endif
605		861
606	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	863	mn_now = get_clock ();
608	now_floor = mn_now;	864	now_floor = mn_now;
609	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
610		866
611	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
612	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
613	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
614	else
615	methods = EVMETHOD_ANY;
616		871
617	method = 0;	872	if (!(flags & 0x0000ffffUL))
618	#if EV_USE_WIN32	873	flags \|= ev_recommended_backends ();
619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
620	#endif	878	#endif
621	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623	#endif	881	#endif
624	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626	#endif	884	#endif
627	#if EV_USE_POLL	885	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629	#endif	887	#endif
630	#if EV_USE_SELECT	888	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632	#endif	890	#endif
633	}
634	}
635		891
636	void	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
637	loop_destroy (EV_P)	898	loop_destroy (EV_P)
638	{	899	{
639	#if EV_USE_WIN32	900	int i;
640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	901
		902	#if EV_USE_PORT
		903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
641	#endif	904	#endif
642	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
644	#endif	907	#endif
645	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
647	#endif	910	#endif
648	#if EV_USE_POLL	911	#if EV_USE_POLL
649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
650	#endif	913	#endif
651	#if EV_USE_SELECT	914	#if EV_USE_SELECT
652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
653	#endif	916	#endif
654		917
655	method = 0;	918	for (i = NUMPRI; i--; )
656	/TODO/	919	array_free (pending, [i]);
657	}
658		920
659	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
660	loop_fork (EV_P)	935	loop_fork (EV_P)
661	{	936	{
662	/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
663	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
665	#endif	945	#endif
666	#if EV_USE_KQUEUE	946
667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	947	if (ev_is_active (&sigev))
668	#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;
669	}	963	}
670		964
671	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
672	struct ev_loop *	966	struct ev_loop *
673	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
674	{	968	{
675	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));
676		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
677	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
678		974
679	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
680	return loop;	976	return loop;
681		977
682	return 0;	978	return 0;
683	}	979	}
684		980
685	void	981	void
686	ev_loop_destroy (EV_P)	982	ev_loop_destroy (EV_P)
687	{	983	{
688	loop_destroy (EV_A);	984	loop_destroy (EV_A);
689	free (loop);	985	ev_free (loop);
690	}	986	}
691		987
692	void	988	void
693	ev_loop_fork (EV_P)	989	ev_loop_fork (EV_P)
694	{	990	{
695	loop_fork (EV_A);	991	postfork = 1;
696	}	992	}
697		993
698	#endif	994	#endif
699		995
700	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
701	struct ev_loop default_loop_struct;
702	static struct ev_loop *default_loop;
703
704	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
705	#else	999	#else
706	static int default_loop;
707
708	int	1000	int
		1001	ev_default_loop (unsigned int flags)
709	#endif	1002	#endif
710	ev_default_loop (int methods)
711	{	1003	{
712	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
713	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
714	return 0;	1006	return 0;
715		1007
716	if (!default_loop)	1008	if (!ev_default_loop_ptr)
717	{	1009	{
718	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
719	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
720	#else	1012	#else
721	default_loop = 1;	1013	ev_default_loop_ptr = 1;
722	#endif	1014	#endif
723		1015
724	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
725		1017
726	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
727	{	1019	{
728	ev_watcher_init (&sigev, sigcb);
729	ev_set_priority (&sigev, EV_MAXPRI);
730	siginit (EV_A);	1020	siginit (EV_A);
731		1021
732	#ifndef WIN32	1022	#ifndef _WIN32
733	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
734	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
735	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
736	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
737	#endif	1027	#endif
738	}	1028	}
739	else	1029	else
740	default_loop = 0;	1030	ev_default_loop_ptr = 0;
741	}	1031	}
742		1032
743	return default_loop;	1033	return ev_default_loop_ptr;
744	}	1034	}
745		1035
746	void	1036	void
747	ev_default_destroy (void)	1037	ev_default_destroy (void)
748	{	1038	{
749	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
750	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
751	#endif	1041	#endif
752		1042
		1043	#ifndef _WIN32
753	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
754	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
755		1047
756	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
757	ev_io_stop (EV_A_ &sigev);	1049	ev_io_stop (EV_A_ &sigev);
758		1050
759	close (sigpipe [0]); sigpipe [0] = 0;	1051	close (sigpipe [0]); sigpipe [0] = 0;
…		…
764		1056
765	void	1057	void
766	ev_default_fork (void)	1058	ev_default_fork (void)
767	{	1059	{
768	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
769	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
770	#endif	1062	#endif
771		1063
772	loop_fork (EV_A);	1064	if (backend)
773		1065	postfork = 1;
774	ev_io_stop (EV_A_ &sigev);
775	close (sigpipe [0]);
776	close (sigpipe [1]);
777	pipe (sigpipe);
778
779	ev_ref (EV_A); /* signal watcher */
780	siginit (EV_A);
781	}	1066	}
782		1067
783	/*****************************************************************************/	1068	/*****************************************************************************/
784		1069
785	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
786	call_pending (EV_P)	1083	call_pending (EV_P)
787	{	1084	{
788	int pri;	1085	int pri;
789		1086
790	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
791	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
792	{	1089	{
793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794		1091
795	if (p->w)	1092	if (expect_true (p->w))
796	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
797	p->w->pending = 0;	1096	p->w->pending = 0;
798		1097	EV_CB_INVOKE (p->w, p->events);
799	((void (*)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800	}	1098	}
801	}	1099	}
802	}	1100	}
803		1101
804	static void	1102	void inline_size
805	timers_reify (EV_P)	1103	timers_reify (EV_P)
806	{	1104	{
807	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
808	{	1106	{
809	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
810		1108
811	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
812		1110
813	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
814	if (w->repeat)	1112	if (w->repeat)
815	{	1113	{
816	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
817	((WT)w)->at = mn_now + w->repeat;	1116	((WT)w)->at += w->repeat;
		1117	if (((WT)w)->at < mn_now)
		1118	((WT)w)->at = mn_now;
		1119
818	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
819	}	1121	}
820	else	1122	else
821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822		1124
823	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824	}	1126	}
825	}	1127	}
826		1128
827	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
828	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
829	{	1132	{
830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
831	{	1134	{
832	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
833		1136
834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
835		1138
836	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
837	if (w->interval)	1140	if (w->reschedule_cb)
838	{	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	{
839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
841	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
842	}	1151	}
843	else	1152	else
844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845		1154
846	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847	}	1156	}
848	}	1157	}
849		1158
850	static void	1159	static void noinline
851	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
852	{	1161	{
853	int i;	1162	int i;
854		1163
855	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
856	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
857	{	1166	{
858	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
859		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
860	if (w->interval)	1171	else if (w->interval)
861	{
862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864	if (fabs (diff) >= 1e-4)
865	{
866	ev_periodic_stop (EV_A_ w);
867	ev_periodic_start (EV_A_ w);
868
869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
870	}
871	}
872	}	1173	}
873	}
874		1174
875	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
876	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
877	{	1183	{
878	mn_now = get_clock ();	1184	mn_now = get_clock ();
879		1185
880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881	{	1187	{
882	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
883	return 0;	1189	return 0;
884	}	1190	}
885	else	1191	else
886	{	1192	{
887	now_floor = mn_now;	1193	now_floor = mn_now;
888	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
889	return 1;	1195	return 1;
890	}	1196	}
891	}	1197	}
892		1198
893	static void	1199	void inline_size
894	time_update (EV_P)	1200	time_update (EV_P)
895	{	1201	{
896	int i;	1202	int i;
897		1203
898	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
900	{	1206	{
901	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
902	{	1208	{
903	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
904		1210
905	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; )
906	{	1220	{
907	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
908		1222
909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910	return; /* all is well */	1224	return; /* all is well */
911		1225
912	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
913	mn_now = get_clock ();	1227	mn_now = get_clock ();
914	now_floor = mn_now;	1228	now_floor = mn_now;
915	}	1229	}
916		1230
		1231	# if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
918	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920	}	1236	}
921	}	1237	}
922	else	1238	else
923	#endif	1239	#endif
924	{	1240	{
925	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
926		1242
927	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))
928	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
929	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
930		1248
931	/* 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 */
932	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
933	((WT)timers [i])->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
934	}	1252	}
935		1253
936	mn_now = rt_now;	1254	mn_now = ev_rt_now;
937	}	1255	}
938	}	1256	}
939		1257
940	void	1258	void
941	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
952	static int loop_done;	1270	static int loop_done;
953		1271
954	void	1272	void
955	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
956	{	1274	{
957	double block;
958	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
959		1278
960	do	1279	while (activecnt)
961	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	if (expect_false (postfork))
		1283	if (forkcnt)
		1284	{
		1285	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1286	call_pending (EV_A);
		1287	}
		1288
962	/* queue check watchers (and execute them) */	1289	/* queue check watchers (and execute them) */
963	if (expect_false (preparecnt))	1290	if (expect_false (preparecnt))
964	{	1291	{
965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966	call_pending (EV_A);	1293	call_pending (EV_A);
967	}	1294	}
968		1295
		1296	/* we might have forked, so reify kernel state if necessary */
		1297	if (expect_false (postfork))
		1298	loop_fork (EV_A);
		1299
969	/* update fd-related kernel structures */	1300	/* update fd-related kernel structures */
970	fd_reify (EV_A);	1301	fd_reify (EV_A);
971		1302
972	/* calculate blocking time */	1303	/* calculate blocking time */
		1304	{
		1305	double block;
973		1306
974	/* we only need this for !monotonic clockor timers, but as we basically	1307	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
975	always have timers, we just calculate it always */	1308	block = 0.; /* do not block at all */
		1309	else
		1310	{
		1311	/* update time to cancel out callback processing overhead */
976	#if EV_USE_MONOTONIC	1312	#if EV_USE_MONOTONIC
977	if (expect_true (have_monotonic))	1313	if (expect_true (have_monotonic))
978	time_update_monotonic (EV_A);	1314	time_update_monotonic (EV_A);
979	else	1315	else
980	#endif	1316	#endif
981	{	1317	{
982	rt_now = ev_time ();	1318	ev_rt_now = ev_time ();
983	mn_now = rt_now;	1319	mn_now = ev_rt_now;
984	}	1320	}
985		1321
986	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
987	block = 0.;
988	else
989	{
990	block = MAX_BLOCKTIME;	1322	block = MAX_BLOCKTIME;
991		1323
992	if (timercnt)	1324	if (timercnt)
993	{	1325	{
994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1326	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
995	if (block > to) block = to;	1327	if (block > to) block = to;
996	}	1328	}
997		1329
		1330	#if EV_PERIODIC_ENABLE
998	if (periodiccnt)	1331	if (periodiccnt)
999	{	1332	{
1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1333	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1001	if (block > to) block = to;	1334	if (block > to) block = to;
1002	}	1335	}
		1336	#endif
1003		1337
1004	if (block < 0.) block = 0.;	1338	if (expect_false (block < 0.)) block = 0.;
1005	}	1339	}
1006		1340
1007	method_poll (EV_A_ block);	1341	backend_poll (EV_A_ block);
		1342	}
1008		1343
1009	/* update rt_now, do magic */	1344	/* update ev_rt_now, do magic */
1010	time_update (EV_A);	1345	time_update (EV_A);
1011		1346
1012	/* queue pending timers and reschedule them */	1347	/* queue pending timers and reschedule them */
1013	timers_reify (EV_A); /* relative timers called last */	1348	timers_reify (EV_A); /* relative timers called last */
		1349	#if EV_PERIODIC_ENABLE
1014	periodics_reify (EV_A); /* absolute timers called first */	1350	periodics_reify (EV_A); /* absolute timers called first */
		1351	#endif
1015		1352
1016	/* queue idle watchers unless io or timers are pending */	1353	/* queue idle watchers unless other events are pending */
1017	if (!pendingcnt)	1354	if (idlecnt && !any_pending (EV_A))
1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019		1356
1020	/* queue check watchers, to be executed first */	1357	/* queue check watchers, to be executed first */
1021	if (checkcnt)	1358	if (expect_false (checkcnt))
1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1023		1360
1024	call_pending (EV_A);	1361	call_pending (EV_A);
1025	}
1026	while (activecnt && !loop_done);
1027		1362
1028	if (loop_done != 2)	1363	if (expect_false (loop_done))
1029	loop_done = 0;	1364	break;
		1365	}
		1366
		1367	if (loop_done == EVUNLOOP_ONE)
		1368	loop_done = EVUNLOOP_CANCEL;
1030	}	1369	}
1031		1370
1032	void	1371	void
1033	ev_unloop (EV_P_ int how)	1372	ev_unloop (EV_P_ int how)
1034	{	1373	{
1035	loop_done = how;	1374	loop_done = how;
1036	}	1375	}
1037		1376
1038	/*****************************************************************************/	1377	/*****************************************************************************/
1039		1378
1040	inline void	1379	void inline_size
1041	wlist_add (WL *head, WL elem)	1380	wlist_add (WL *head, WL elem)
1042	{	1381	{
1043	elem->next = *head;	1382	elem->next = *head;
1044	*head = elem;	1383	*head = elem;
1045	}	1384	}
1046		1385
1047	inline void	1386	void inline_size
1048	wlist_del (WL *head, WL elem)	1387	wlist_del (WL *head, WL elem)
1049	{	1388	{
1050	while (*head)	1389	while (*head)
1051	{	1390	{
1052	if (*head == elem)	1391	if (*head == elem)
…		…
1057		1396
1058	head = &(*head)->next;	1397	head = &(*head)->next;
1059	}	1398	}
1060	}	1399	}
1061		1400
1062	inline void	1401	void inline_speed
1063	ev_clear_pending (EV_P_ W w)	1402	ev_clear_pending (EV_P_ W w)
1064	{	1403	{
1065	if (w->pending)	1404	if (w->pending)
1066	{	1405	{
1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1068	w->pending = 0;	1407	w->pending = 0;
1069	}	1408	}
1070	}	1409	}
1071		1410
1072	inline void	1411	void inline_speed
1073	ev_start (EV_P_ W w, int active)	1412	ev_start (EV_P_ W w, int active)
1074	{	1413	{
1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1077		1416
1078	w->active = active;	1417	w->active = active;
1079	ev_ref (EV_A);	1418	ev_ref (EV_A);
1080	}	1419	}
1081		1420
1082	inline void	1421	void inline_size
1083	ev_stop (EV_P_ W w)	1422	ev_stop (EV_P_ W w)
1084	{	1423	{
1085	ev_unref (EV_A);	1424	ev_unref (EV_A);
1086	w->active = 0;	1425	w->active = 0;
1087	}	1426	}
1088		1427
1089	/*****************************************************************************/	1428	/*****************************************************************************/
1090		1429
1091	void	1430	void
1092	ev_io_start (EV_P_ struct ev_io *w)	1431	ev_io_start (EV_P_ ev_io *w)
1093	{	1432	{
1094	int fd = w->fd;	1433	int fd = w->fd;
1095		1434
1096	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1097	return;	1436	return;
1098		1437
1099	assert (("ev_io_start called with negative fd", fd >= 0));	1438	assert (("ev_io_start called with negative fd", fd >= 0));
1100		1439
1101	ev_start (EV_A_ (W)w, 1);	1440	ev_start (EV_A_ (W)w, 1);
1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1441	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1442	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104		1443
1105	fd_change (EV_A_ fd);	1444	fd_change (EV_A_ fd);
1106	}	1445	}
1107		1446
1108	void	1447	void
1109	ev_io_stop (EV_P_ struct ev_io *w)	1448	ev_io_stop (EV_P_ ev_io *w)
1110	{	1449	{
1111	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1112	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1113	return;	1452	return;
		1453
		1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1114		1455
1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1456	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1116	ev_stop (EV_A_ (W)w);	1457	ev_stop (EV_A_ (W)w);
1117		1458
1118	fd_change (EV_A_ w->fd);	1459	fd_change (EV_A_ w->fd);
1119	}	1460	}
1120		1461
1121	void	1462	void
1122	ev_timer_start (EV_P_ struct ev_timer *w)	1463	ev_timer_start (EV_P_ ev_timer *w)
1123	{	1464	{
1124	if (ev_is_active (w))	1465	if (expect_false (ev_is_active (w)))
1125	return;	1466	return;
1126		1467
1127	((WT)w)->at += mn_now;	1468	((WT)w)->at += mn_now;
1128		1469
1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1470	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130		1471
1131	ev_start (EV_A_ (W)w, ++timercnt);	1472	ev_start (EV_A_ (W)w, ++timercnt);
1132	array_needsize (timers, timermax, timercnt, );	1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1133	timers [timercnt - 1] = w;	1474	timers [timercnt - 1] = w;
1134	upheap ((WT *)timers, timercnt - 1);	1475	upheap ((WT *)timers, timercnt - 1);
1135		1476
1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137	}	1478	}
1138		1479
1139	void	1480	void
1140	ev_timer_stop (EV_P_ struct ev_timer *w)	1481	ev_timer_stop (EV_P_ ev_timer *w)
1141	{	1482	{
1142	ev_clear_pending (EV_A_ (W)w);	1483	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))	1484	if (expect_false (!ev_is_active (w)))
1144	return;	1485	return;
1145		1486
1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1147		1488
1148	if (((W)w)->active < timercnt--)	1489	if (expect_true (((W)w)->active < timercnt--))
1149	{	1490	{
1150	timers [((W)w)->active - 1] = timers [timercnt];	1491	timers [((W)w)->active - 1] = timers [timercnt];
1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1493	}
1153		1494
1154	((WT)w)->at = w->repeat;	1495	((WT)w)->at -= mn_now;
1155		1496
1156	ev_stop (EV_A_ (W)w);	1497	ev_stop (EV_A_ (W)w);
1157	}	1498	}
1158		1499
1159	void	1500	void
1160	ev_timer_again (EV_P_ struct ev_timer *w)	1501	ev_timer_again (EV_P_ ev_timer *w)
1161	{	1502	{
1162	if (ev_is_active (w))	1503	if (ev_is_active (w))
1163	{	1504	{
1164	if (w->repeat)	1505	if (w->repeat)
1165	{	1506	{
1166	((WT)w)->at = mn_now + w->repeat;	1507	((WT)w)->at = mn_now + w->repeat;
1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1168	}	1509	}
1169	else	1510	else
1170	ev_timer_stop (EV_A_ w);	1511	ev_timer_stop (EV_A_ w);
1171	}	1512	}
1172	else if (w->repeat)	1513	else if (w->repeat)
		1514	{
		1515	w->at = w->repeat;
1173	ev_timer_start (EV_A_ w);	1516	ev_timer_start (EV_A_ w);
		1517	}
1174	}	1518	}
1175		1519
		1520	#if EV_PERIODIC_ENABLE
1176	void	1521	void
1177	ev_periodic_start (EV_P_ struct ev_periodic *w)	1522	ev_periodic_start (EV_P_ ev_periodic *w)
1178	{	1523	{
1179	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1180	return;	1525	return;
1181		1526
		1527	if (w->reschedule_cb)
		1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1529	else if (w->interval)
		1530	{
1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1531	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184	/* this formula differs from the one in periodic_reify because we do not always round up */	1532	/* this formula differs from the one in periodic_reify because we do not always round up */
1185	if (w->interval)
1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1533	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1534	}
1187		1535
1188	ev_start (EV_A_ (W)w, ++periodiccnt);	1536	ev_start (EV_A_ (W)w, ++periodiccnt);
1189	array_needsize (periodics, periodicmax, periodiccnt, );	1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1190	periodics [periodiccnt - 1] = w;	1538	periodics [periodiccnt - 1] = w;
1191	upheap ((WT *)periodics, periodiccnt - 1);	1539	upheap ((WT *)periodics, periodiccnt - 1);
1192		1540
1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194	}	1542	}
1195		1543
1196	void	1544	void
1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1545	ev_periodic_stop (EV_P_ ev_periodic *w)
1198	{	1546	{
1199	ev_clear_pending (EV_A_ (W)w);	1547	ev_clear_pending (EV_A_ (W)w);
1200	if (!ev_is_active (w))	1548	if (expect_false (!ev_is_active (w)))
1201	return;	1549	return;
1202		1550
1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1204		1552
1205	if (((W)w)->active < periodiccnt--)	1553	if (expect_true (((W)w)->active < periodiccnt--))
1206	{	1554	{
1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1209	}	1557	}
1210		1558
1211	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1212	}	1560	}
1213		1561
1214	void	1562	void
1215	ev_idle_start (EV_P_ struct ev_idle *w)	1563	ev_periodic_again (EV_P_ ev_periodic *w)
1216	{	1564	{
1217	if (ev_is_active (w))	1565	/* TODO: use adjustheap and recalculation */
1218	return;
1219
1220	ev_start (EV_A_ (W)w, ++idlecnt);
1221	array_needsize (idles, idlemax, idlecnt, );
1222	idles [idlecnt - 1] = w;
1223	}
1224
1225	void
1226	ev_idle_stop (EV_P_ struct ev_idle *w)
1227	{
1228	ev_clear_pending (EV_A_ (W)w);
1229	if (ev_is_active (w))
1230	return;
1231
1232	idles [((W)w)->active - 1] = idles [--idlecnt];
1233	ev_stop (EV_A_ (W)w);	1566	ev_periodic_stop (EV_A_ w);
		1567	ev_periodic_start (EV_A_ w);
1234	}	1568	}
1235		1569	#endif
1236	void
1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
1238	{
1239	if (ev_is_active (w))
1240	return;
1241
1242	ev_start (EV_A_ (W)w, ++preparecnt);
1243	array_needsize (prepares, preparemax, preparecnt, );
1244	prepares [preparecnt - 1] = w;
1245	}
1246
1247	void
1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249	{
1250	ev_clear_pending (EV_A_ (W)w);
1251	if (ev_is_active (w))
1252	return;
1253
1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255	ev_stop (EV_A_ (W)w);
1256	}
1257
1258	void
1259	ev_check_start (EV_P_ struct ev_check *w)
1260	{
1261	if (ev_is_active (w))
1262	return;
1263
1264	ev_start (EV_A_ (W)w, ++checkcnt);
1265	array_needsize (checks, checkmax, checkcnt, );
1266	checks [checkcnt - 1] = w;
1267	}
1268
1269	void
1270	ev_check_stop (EV_P_ struct ev_check *w)
1271	{
1272	ev_clear_pending (EV_A_ (W)w);
1273	if (ev_is_active (w))
1274	return;
1275
1276	checks [((W)w)->active - 1] = checks [--checkcnt];
1277	ev_stop (EV_A_ (W)w);
1278	}
1279		1570
1280	#ifndef SA_RESTART	1571	#ifndef SA_RESTART
1281	# define SA_RESTART 0	1572	# define SA_RESTART 0
1282	#endif	1573	#endif
1283		1574
1284	void	1575	void
1285	ev_signal_start (EV_P_ struct ev_signal *w)	1576	ev_signal_start (EV_P_ ev_signal *w)
1286	{	1577	{
1287	#if EV_MULTIPLICITY	1578	#if EV_MULTIPLICITY
1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1579	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1289	#endif	1580	#endif
1290	if (ev_is_active (w))	1581	if (expect_false (ev_is_active (w)))
1291	return;	1582	return;
1292		1583
1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1584	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294		1585
1295	ev_start (EV_A_ (W)w, 1);	1586	ev_start (EV_A_ (W)w, 1);
1296	array_needsize (signals, signalmax, w->signum, signals_init);	1587	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1588	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298		1589
1299	if (!((WL)w)->next)	1590	if (!((WL)w)->next)
1300	{	1591	{
		1592	#if _WIN32
		1593	signal (w->signum, sighandler);
		1594	#else
1301	struct sigaction sa;	1595	struct sigaction sa;
1302	sa.sa_handler = sighandler;	1596	sa.sa_handler = sighandler;
1303	sigfillset (&sa.sa_mask);	1597	sigfillset (&sa.sa_mask);
1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1598	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305	sigaction (w->signum, &sa, 0);	1599	sigaction (w->signum, &sa, 0);
		1600	#endif
1306	}	1601	}
1307	}	1602	}
1308		1603
1309	void	1604	void
1310	ev_signal_stop (EV_P_ struct ev_signal *w)	1605	ev_signal_stop (EV_P_ ev_signal *w)
1311	{	1606	{
1312	ev_clear_pending (EV_A_ (W)w);	1607	ev_clear_pending (EV_A_ (W)w);
1313	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1314	return;	1609	return;
1315		1610
1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1317	ev_stop (EV_A_ (W)w);	1612	ev_stop (EV_A_ (W)w);
1318		1613
1319	if (!signals [w->signum - 1].head)	1614	if (!signals [w->signum - 1].head)
1320	signal (w->signum, SIG_DFL);	1615	signal (w->signum, SIG_DFL);
1321	}	1616	}
1322		1617
1323	void	1618	void
1324	ev_child_start (EV_P_ struct ev_child *w)	1619	ev_child_start (EV_P_ ev_child *w)
1325	{	1620	{
1326	#if EV_MULTIPLICITY	1621	#if EV_MULTIPLICITY
1327	assert (("child watchers are only supported in the default loop", loop == default_loop));	1622	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1328	#endif	1623	#endif
1329	if (ev_is_active (w))	1624	if (expect_false (ev_is_active (w)))
1330	return;	1625	return;
1331		1626
1332	ev_start (EV_A_ (W)w, 1);	1627	ev_start (EV_A_ (W)w, 1);
1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1334	}	1629	}
1335		1630
1336	void	1631	void
1337	ev_child_stop (EV_P_ struct ev_child *w)	1632	ev_child_stop (EV_P_ ev_child *w)
1338	{	1633	{
1339	ev_clear_pending (EV_A_ (W)w);	1634	ev_clear_pending (EV_A_ (W)w);
1340	if (ev_is_active (w))	1635	if (expect_false (!ev_is_active (w)))
1341	return;	1636	return;
1342		1637
1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1344	ev_stop (EV_A_ (W)w);	1639	ev_stop (EV_A_ (W)w);
1345	}	1640	}
1346		1641
		1642	#if EV_STAT_ENABLE
		1643
		1644	# ifdef _WIN32
		1645	# undef lstat
		1646	# define lstat(a,b) _stati64 (a,b)
		1647	# endif
		1648
		1649	#define DEF_STAT_INTERVAL 5.0074891
		1650	#define MIN_STAT_INTERVAL 0.1074891
		1651
		1652	void
		1653	ev_stat_stat (EV_P_ ev_stat *w)
		1654	{
		1655	if (lstat (w->path, &w->attr) < 0)
		1656	w->attr.st_nlink = 0;
		1657	else if (!w->attr.st_nlink)
		1658	w->attr.st_nlink = 1;
		1659	}
		1660
		1661	static void
		1662	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1663	{
		1664	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1665
		1666	/* we copy this here each the time so that */
		1667	/* prev has the old value when the callback gets invoked */
		1668	w->prev = w->attr;
		1669	ev_stat_stat (EV_A_ w);
		1670
		1671	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1672	ev_feed_event (EV_A_ w, EV_STAT);
		1673	}
		1674
		1675	void
		1676	ev_stat_start (EV_P_ ev_stat *w)
		1677	{
		1678	if (expect_false (ev_is_active (w)))
		1679	return;
		1680
		1681	/* since we use memcmp, we need to clear any padding data etc. */
		1682	memset (&w->prev, 0, sizeof (ev_statdata));
		1683	memset (&w->attr, 0, sizeof (ev_statdata));
		1684
		1685	ev_stat_stat (EV_A_ w);
		1686
		1687	if (w->interval < MIN_STAT_INTERVAL)
		1688	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1689
		1690	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1691	ev_set_priority (&w->timer, ev_priority (w));
		1692	ev_timer_start (EV_A_ &w->timer);
		1693
		1694	ev_start (EV_A_ (W)w, 1);
		1695	}
		1696
		1697	void
		1698	ev_stat_stop (EV_P_ ev_stat *w)
		1699	{
		1700	ev_clear_pending (EV_A_ (W)w);
		1701	if (expect_false (!ev_is_active (w)))
		1702	return;
		1703
		1704	ev_timer_stop (EV_A_ &w->timer);
		1705
		1706	ev_stop (EV_A_ (W)w);
		1707	}
		1708	#endif
		1709
		1710	void
		1711	ev_idle_start (EV_P_ ev_idle *w)
		1712	{
		1713	if (expect_false (ev_is_active (w)))
		1714	return;
		1715
		1716	ev_start (EV_A_ (W)w, ++idlecnt);
		1717	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1718	idles [idlecnt - 1] = w;
		1719	}
		1720
		1721	void
		1722	ev_idle_stop (EV_P_ ev_idle *w)
		1723	{
		1724	ev_clear_pending (EV_A_ (W)w);
		1725	if (expect_false (!ev_is_active (w)))
		1726	return;
		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730	idles [active - 1] = idles [--idlecnt];
		1731	((W)idles [active - 1])->active = active;
		1732	}
		1733
		1734	ev_stop (EV_A_ (W)w);
		1735	}
		1736
		1737	void
		1738	ev_prepare_start (EV_P_ ev_prepare *w)
		1739	{
		1740	if (expect_false (ev_is_active (w)))
		1741	return;
		1742
		1743	ev_start (EV_A_ (W)w, ++preparecnt);
		1744	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1745	prepares [preparecnt - 1] = w;
		1746	}
		1747
		1748	void
		1749	ev_prepare_stop (EV_P_ ev_prepare *w)
		1750	{
		1751	ev_clear_pending (EV_A_ (W)w);
		1752	if (expect_false (!ev_is_active (w)))
		1753	return;
		1754
		1755	{
		1756	int active = ((W)w)->active;
		1757	prepares [active - 1] = prepares [--preparecnt];
		1758	((W)prepares [active - 1])->active = active;
		1759	}
		1760
		1761	ev_stop (EV_A_ (W)w);
		1762	}
		1763
		1764	void
		1765	ev_check_start (EV_P_ ev_check *w)
		1766	{
		1767	if (expect_false (ev_is_active (w)))
		1768	return;
		1769
		1770	ev_start (EV_A_ (W)w, ++checkcnt);
		1771	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1772	checks [checkcnt - 1] = w;
		1773	}
		1774
		1775	void
		1776	ev_check_stop (EV_P_ ev_check *w)
		1777	{
		1778	ev_clear_pending (EV_A_ (W)w);
		1779	if (expect_false (!ev_is_active (w)))
		1780	return;
		1781
		1782	{
		1783	int active = ((W)w)->active;
		1784	checks [active - 1] = checks [--checkcnt];
		1785	((W)checks [active - 1])->active = active;
		1786	}
		1787
		1788	ev_stop (EV_A_ (W)w);
		1789	}
		1790
		1791	#if EV_EMBED_ENABLE
		1792	void noinline
		1793	ev_embed_sweep (EV_P_ ev_embed *w)
		1794	{
		1795	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1796	}
		1797
		1798	static void
		1799	embed_cb (EV_P_ ev_io *io, int revents)
		1800	{
		1801	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1802
		1803	if (ev_cb (w))
		1804	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1805	else
		1806	ev_embed_sweep (loop, w);
		1807	}
		1808
		1809	void
		1810	ev_embed_start (EV_P_ ev_embed *w)
		1811	{
		1812	if (expect_false (ev_is_active (w)))
		1813	return;
		1814
		1815	{
		1816	struct ev_loop *loop = w->loop;
		1817	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1818	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1819	}
		1820
		1821	ev_set_priority (&w->io, ev_priority (w));
		1822	ev_io_start (EV_A_ &w->io);
		1823
		1824	ev_start (EV_A_ (W)w, 1);
		1825	}
		1826
		1827	void
		1828	ev_embed_stop (EV_P_ ev_embed *w)
		1829	{
		1830	ev_clear_pending (EV_A_ (W)w);
		1831	if (expect_false (!ev_is_active (w)))
		1832	return;
		1833
		1834	ev_io_stop (EV_A_ &w->io);
		1835
		1836	ev_stop (EV_A_ (W)w);
		1837	}
		1838	#endif
		1839
		1840	#if EV_FORK_ENABLE
		1841	void
		1842	ev_fork_start (EV_P_ ev_fork *w)
		1843	{
		1844	if (expect_false (ev_is_active (w)))
		1845	return;
		1846
		1847	ev_start (EV_A_ (W)w, ++forkcnt);
		1848	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1849	forks [forkcnt - 1] = w;
		1850	}
		1851
		1852	void
		1853	ev_fork_stop (EV_P_ ev_fork *w)
		1854	{
		1855	ev_clear_pending (EV_A_ (W)w);
		1856	if (expect_false (!ev_is_active (w)))
		1857	return;
		1858
		1859	{
		1860	int active = ((W)w)->active;
		1861	forks [active - 1] = forks [--forkcnt];
		1862	((W)forks [active - 1])->active = active;
		1863	}
		1864
		1865	ev_stop (EV_A_ (W)w);
		1866	}
		1867	#endif
		1868
1347	/*****************************************************************************/	1869	/*****************************************************************************/
1348		1870
1349	struct ev_once	1871	struct ev_once
1350	{	1872	{
1351	struct ev_io io;	1873	ev_io io;
1352	struct ev_timer to;	1874	ev_timer to;
1353	void (cb)(int revents, void arg);	1875	void (cb)(int revents, void arg);
1354	void *arg;	1876	void *arg;
1355	};	1877	};
1356		1878
1357	static void	1879	static void
…		…
1360	void (cb)(int revents, void arg) = once->cb;	1882	void (cb)(int revents, void arg) = once->cb;
1361	void *arg = once->arg;	1883	void *arg = once->arg;
1362		1884
1363	ev_io_stop (EV_A_ &once->io);	1885	ev_io_stop (EV_A_ &once->io);
1364	ev_timer_stop (EV_A_ &once->to);	1886	ev_timer_stop (EV_A_ &once->to);
1365	free (once);	1887	ev_free (once);
1366		1888
1367	cb (revents, arg);	1889	cb (revents, arg);
1368	}	1890	}
1369		1891
1370	static void	1892	static void
1371	once_cb_io (EV_P_ struct ev_io *w, int revents)	1893	once_cb_io (EV_P_ ev_io *w, int revents)
1372	{	1894	{
1373	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1895	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1374	}	1896	}
1375		1897
1376	static void	1898	static void
1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1899	once_cb_to (EV_P_ ev_timer *w, int revents)
1378	{	1900	{
1379	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1901	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1380	}	1902	}
1381		1903
1382	void	1904	void
1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1905	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1384	{	1906	{
1385	struct ev_once *once = malloc (sizeof (struct ev_once));	1907	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1386		1908
1387	if (!once)	1909	if (expect_false (!once))
		1910	{
1388	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1911	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1389	else	1912	return;
1390	{	1913	}
		1914
1391	once->cb = cb;	1915	once->cb = cb;
1392	once->arg = arg;	1916	once->arg = arg;
1393		1917
1394	ev_watcher_init (&once->io, once_cb_io);	1918	ev_init (&once->io, once_cb_io);
1395	if (fd >= 0)	1919	if (fd >= 0)
1396	{	1920	{
1397	ev_io_set (&once->io, fd, events);	1921	ev_io_set (&once->io, fd, events);
1398	ev_io_start (EV_A_ &once->io);	1922	ev_io_start (EV_A_ &once->io);
1399	}	1923	}
1400		1924
1401	ev_watcher_init (&once->to, once_cb_to);	1925	ev_init (&once->to, once_cb_to);
1402	if (timeout >= 0.)	1926	if (timeout >= 0.)
1403	{	1927	{
1404	ev_timer_set (&once->to, timeout, 0.);	1928	ev_timer_set (&once->to, timeout, 0.);
1405	ev_timer_start (EV_A_ &once->to);	1929	ev_timer_start (EV_A_ &once->to);
1406	}
1407	}	1930	}
1408	}	1931	}
1409		1932
		1933	#ifdef __cplusplus
		1934	}
		1935	#endif
		1936

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Comparing libev/ev.c (file contents): Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs. Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC