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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		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)
		202	# define inline_speed static
105	# define inline static	203	# define inline_size static
		204	# define noinline
106	#endif	205	#endif
107		206
108	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
110		209
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
114	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
117		219
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		221
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
120	/*****************************************************************************/	226	/*****************************************************************************/
121		227
		228	static void (syserr_cb)(const char msg);
		229
		230	void
		231	ev_set_syserr_cb (void (cb)(const char msg))
		232	{
		233	syserr_cb = cb;
		234	}
		235
		236	static void noinline
		237	syserr (const char *msg)
		238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
		242	if (syserr_cb)
		243	syserr_cb (msg);
		244	else
		245	{
		246	perror (msg);
		247	abort ();
		248	}
		249	}
		250
		251	static void (alloc)(void *ptr, long size);
		252
		253	void
		254	ev_set_allocator (void (cb)(void *ptr, long size))
		255	{
		256	alloc = cb;
		257	}
		258
		259	static void *
		260	ev_realloc (void *ptr, long size)
		261	{
		262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		263
		264	if (!ptr && size)
		265	{
		266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		267	abort ();
		268	}
		269
		270	return ptr;
		271	}
		272
		273	#define ev_malloc(size) ev_realloc (0, (size))
		274	#define ev_free(ptr) ev_realloc ((ptr), 0)
		275
		276	/*****************************************************************************/
		277
122	typedef struct	278	typedef struct
123	{	279	{
124	struct ev_watcher_list *head;	280	WL head;
125	unsigned char events;	281	unsigned char events;
126	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
127	} ANFD;	286	} ANFD;
128		287
129	typedef struct	288	typedef struct
130	{	289	{
131	W w;	290	W w;
132	int events;	291	int events;
133	} ANPENDING;	292	} ANPENDING;
134		293
135	#ifdef EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
136		295
137	struct ev_loop	296	struct ev_loop
138	{	297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	301	#include "ev_vars.h"
141	};
142	# undef VAR	302	#undef VAR
		303	};
143	# include "ev_wrap.h"	304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
144		308
145	#else	309	#else
146		310
		311	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	313	#include "ev_vars.h"
149	# undef VAR	314	#undef VAR
		315
		316	static int ev_default_loop_ptr;
150		317
151	#endif	318	#endif
152		319
153	/*****************************************************************************/	320	/*****************************************************************************/
154		321
155	inline ev_tstamp	322	ev_tstamp
156	ev_time (void)	323	ev_time (void)
157	{	324	{
158	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
159	struct timespec ts;	326	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	333	#endif
167	}	334	}
168		335
169	inline ev_tstamp	336	ev_tstamp inline_size
170	get_clock (void)	337	get_clock (void)
171	{	338	{
172	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
174	{	341	{
…		…
179	#endif	346	#endif
180		347
181	return ev_time ();	348	return ev_time ();
182	}	349	}
183		350
		351	#if EV_MULTIPLICITY
184	ev_tstamp	352	ev_tstamp
185	ev_now (EV_P)	353	ev_now (EV_P)
186	{	354	{
187	return rt_now;	355	return ev_rt_now;
188	}	356	}
		357	#endif
189		358
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	359	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		360
192	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
194	{ \	363	{ \
195	int newcnt = cur; \	364	int newcnt = cur; \
196	do \	365	do \
197	{ \	366	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	367	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	368	} \
200	while ((cnt) > newcnt); \	369	while ((cnt) > newcnt); \
201	\	370	\
202	base = realloc (base, sizeof (base) (newcnt)); \	371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	373	cur = newcnt; \
205	}	374	}
		375
		376	#define array_slim(type,stem) \
		377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		378	{ \
		379	stem ## max = array_roundsize (stem ## cnt >> 1); \
		380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		382	}
		383
		384	#define array_free(stem, idx) \
		385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		386
207	/*****************************************************************************/	387	/*****************************************************************************/
208		388
209	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
210	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
211	{	419	{
212	while (count--)	420	while (count--)
213	{	421	{
214	base->head = 0;	422	base->head = 0;
…		…
217		425
218	++base;	426	++base;
219	}	427	}
220	}	428	}
221		429
222	static void	430	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	431	fd_event (EV_P_ int fd, int revents)
248	{	432	{
249	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	434	ev_io *w;
251		435
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	436	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
253	{	437	{
254	int ev = w->events & events;	438	int ev = w->events & revents;
255		439
256	if (ev)	440	if (ev)
257	event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
258	}	442	}
259	}	443	}
260		444
261	/*****************************************************************************/	445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
262		450
263	static void	451	void inline_size
264	fd_reify (EV_P)	452	fd_reify (EV_P)
265	{	453	{
266	int i;	454	int i;
267		455
268	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
269	{	457	{
270	int fd = fdchanges [i];	458	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	460	ev_io *w;
273		461
274	int events = 0;	462	int events = 0;
275		463
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	464	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
277	events \|= w->events;	465	events \|= w->events;
278		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
279	anfd->reify = 0;	476	anfd->reify = 0;
280		477
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	479	anfd->events = events;
285	}
286	}	480	}
287		481
288	fdchangecnt = 0;	482	fdchangecnt = 0;
289	}	483	}
290		484
291	static void	485	void inline_size
292	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
293	{	487	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	488	if (expect_false (anfds [fd].reify))
295	return;	489	return;
296		490
297	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
298		492
299	++fdchangecnt;	493	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
302	}	496	}
303		497
304	static void	498	void inline_speed
305	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
306	{	500	{
307	struct ev_io *w;	501	ev_io *w;
308		502
309	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
310	{	504	{
311	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	507	}
		508	}
		509
		510	int inline_size
		511	fd_valid (int fd)
		512	{
		513	#ifdef _WIN32
		514	return _get_osfhandle (fd) != -1;
		515	#else
		516	return fcntl (fd, F_GETFD) != -1;
		517	#endif
314	}	518	}
315		519
316	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
317	static void	521	static void noinline
318	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
319	{	523	{
320	int fd;	524	int fd;
321		525
322	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	527	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
326	}	530	}
327		531
328	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	533	static void noinline
330	fd_enomem (EV_P)	534	fd_enomem (EV_P)
331	{	535	{
332	int fd = anfdmax;	536	int fd;
333		537
334	while (fd--)	538	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	539	if (anfds [fd].events)
336	{	540	{
337	close (fd);
338	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
339	return;	542	return;
340	}	543	}
341	}	544	}
342		545
		546	/* usually called after fork if backend needs to re-arm all fds from scratch */
		547	static void noinline
		548	fd_rearm_all (EV_P)
		549	{
		550	int fd;
		551
		552	/* this should be highly optimised to not do anything but set a flag */
		553	for (fd = 0; fd < anfdmax; ++fd)
		554	if (anfds [fd].events)
		555	{
		556	anfds [fd].events = 0;
		557	fd_change (EV_A_ fd);
		558	}
		559	}
		560
343	/*****************************************************************************/	561	/*****************************************************************************/
344		562
345	static void	563	void inline_speed
346	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
347	{	565	{
348	WT w = heap [k];	566	WT w = heap [k];
349		567
350	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
351	{	569	{
352	heap [k] = heap [k >> 1];	570	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	571	((W)heap [k])->active = k + 1;
354	k >>= 1;	572	k >>= 1;
355	}	573	}
356		574
357	heap [k] = w;	575	heap [k] = w;
358	heap [k]->active = k + 1;	576	((W)heap [k])->active = k + 1;
359		577
360	}	578	}
361		579
362	static void	580	void inline_speed
363	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
364	{	582	{
365	WT w = heap [k];	583	WT w = heap [k];
366		584
367	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
373		591
374	if (w->at <= heap [j]->at)	592	if (w->at <= heap [j]->at)
375	break;	593	break;
376		594
377	heap [k] = heap [j];	595	heap [k] = heap [j];
378	heap [k]->active = k + 1;	596	((W)heap [k])->active = k + 1;
379	k = j;	597	k = j;
380	}	598	}
381		599
382	heap [k] = w;	600	heap [k] = w;
383	heap [k]->active = k + 1;	601	((W)heap [k])->active = k + 1;
		602	}
		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
384	}	609	}
385		610
386	/*****************************************************************************/	611	/*****************************************************************************/
387		612
388	typedef struct	613	typedef struct
389	{	614	{
390	struct ev_watcher_list *head;	615	WL head;
391	sig_atomic_t volatile gotsig;	616	sig_atomic_t volatile gotsig;
392	} ANSIG;	617	} ANSIG;
393		618
394	static ANSIG *signals;	619	static ANSIG *signals;
395	static int signalmax;	620	static int signalmax;
396		621
397	static int sigpipe [2];	622	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
		624	static ev_io sigev;
399		625
400	static void	626	void inline_size
401	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
402	{	628	{
403	while (count--)	629	while (count--)
404	{	630	{
405	base->head = 0;	631	base->head = 0;
…		…
410	}	636	}
411		637
412	static void	638	static void
413	sighandler (int signum)	639	sighandler (int signum)
414	{	640	{
		641	#if _WIN32
		642	signal (signum, sighandler);
		643	#endif
		644
415	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
416		646
417	if (!gotsig)	647	if (!gotsig)
418	{	648	{
419	int old_errno = errno;	649	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	652	errno = old_errno;
423	}	653	}
424	}	654	}
425		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
426	static void	676	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
428	{	678	{
429	struct ev_watcher_list *w;
430	int signum;	679	int signum;
431		680
432	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	682	gotsig = 0;
434		683
435	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
437	{	686	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	687	}
444		688
445	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
446	siginit (EV_P)	702	siginit (EV_P)
447	{	703	{
448	#ifndef WIN32	704	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		706
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	710	}
461		711
462	/*****************************************************************************/	712	/*****************************************************************************/
463		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
464	#ifndef WIN32	716	#ifndef _WIN32
		717
		718	static ev_signal childev;
		719
		720	void inline_speed
		721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		722	{
		723	ev_child *w;
		724
		725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		726	if (w->pid == pid \|\| !w->pid)
		727	{
		728	ev_priority (w) = ev_priority (sw); /* need to do it now */
		729	w->rpid = pid;
		730	w->rstatus = status;
		731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		732	}
		733	}
465		734
466	#ifndef WCONTINUED	735	#ifndef WCONTINUED
467	# define WCONTINUED 0	736	# define WCONTINUED 0
468	#endif	737	#endif
469		738
470	static void	739	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it now */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
487	{	741	{
488	int pid, status;	742	int pid, status;
489		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	746	if (!WCONTINUED
		747	\|\| errno != EINVAL
		748	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
		749	return;
		750
492	/* 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 */
493	event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		754
495	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
496	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 */
497	}
498	}	757	}
499		758
500	#endif	759	#endif
501		760
502	/*****************************************************************************/	761	/*****************************************************************************/
503		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
504	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
506	#endif	768	#endif
507	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	770	# include "ev_epoll.c"
509	#endif	771	#endif
510	#if EV_USEV_POLL	772	#if EV_USE_POLL
511	# include "ev_poll.c"	773	# include "ev_poll.c"
512	#endif	774	#endif
513	#if EV_USE_SELECT	775	#if EV_USE_SELECT
514	# include "ev_select.c"	776	# include "ev_select.c"
515	#endif	777	#endif
…		…
525	{	787	{
526	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
527	}	789	}
528		790
529	/* 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 */
530	static int	792	int inline_size
531	enable_secure (void)	793	enable_secure (void)
532	{	794	{
533	#ifdef WIN32	795	#ifdef _WIN32
534	return 0;	796	return 0;
535	#else	797	#else
536	return getuid () != geteuid ()	798	return getuid () != geteuid ()
537	\|\| getgid () != getegid ();	799	\|\| getgid () != getegid ();
538	#endif	800	#endif
539	}	801	}
540		802
541	int	803	unsigned int
542	ev_method (EV_P)	804	ev_supported_backends (void)
543	{	805	{
544	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;
545	}	847	}
546		848
547	static void	849	static void
548	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
549	{	851	{
550	if (!method)	852	if (!backend)
551	{	853	{
552	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
553	{	855	{
554	struct timespec ts;	856	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	858	have_monotonic = 1;
557	}	859	}
558	#endif	860	#endif
559		861
560	rt_now = ev_time ();	862	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	863	mn_now = get_clock ();
562	now_floor = mn_now;	864	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
564		866
565	if (pipe (sigpipe))	867	if (!(flags & EVFLAG_NOENV)
566	return 0;	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
		870	flags = atoi (getenv ("LIBEV_FLAGS"));
567		871
568	if (methods == EVMETHOD_AUTO)	872	if (!(flags & 0x0000ffffUL))
569	if (!enable_secure () && getenv ("LIBmethodS"))	873	flags \|= ev_recommended_backends ();
570	methods = atoi (getenv ("LIBmethodS"));
571	else
572	methods = EVMETHOD_ANY;
573		874
574	method = 0;	875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		878	#endif
575	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	881	#endif
578	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	884	#endif
581	#if EV_USEV_POLL	885	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	887	#endif
584	#if EV_USE_SELECT	888	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	890	#endif
587		891
588	if (method)	892	ev_init (&sigev, sigcb);
		893	ev_set_priority (&sigev, EV_MAXPRI);
		894	}
		895	}
		896
		897	static void
		898	loop_destroy (EV_P)
		899	{
		900	int i;
		901
		902	#if EV_USE_PORT
		903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		904	#endif
		905	#if EV_USE_KQUEUE
		906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		907	#endif
		908	#if EV_USE_EPOLL
		909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		910	#endif
		911	#if EV_USE_POLL
		912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		913	#endif
		914	#if EV_USE_SELECT
		915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		916	#endif
		917
		918	for (i = NUMPRI; i--; )
		919	array_free (pending, [i]);
		920
		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
		935	loop_fork (EV_P)
		936	{
		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
		943	#if EV_USE_EPOLL
		944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		945	#endif
		946
		947	if (ev_is_active (&sigev))
		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;
		963	}
		964
		965	#if EV_MULTIPLICITY
		966	struct ev_loop *
		967	ev_loop_new (unsigned int flags)
		968	{
		969	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		970
		971	memset (loop, 0, sizeof (struct ev_loop));
		972
		973	loop_init (EV_A_ flags);
		974
		975	if (ev_backend (EV_A))
		976	return loop;
		977
		978	return 0;
		979	}
		980
		981	void
		982	ev_loop_destroy (EV_P)
		983	{
		984	loop_destroy (EV_A);
		985	ev_free (loop);
		986	}
		987
		988	void
		989	ev_loop_fork (EV_P)
		990	{
		991	postfork = 1;
		992	}
		993
		994	#endif
		995
		996	#if EV_MULTIPLICITY
		997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
		999	#else
		1000	int
		1001	ev_default_loop (unsigned int flags)
		1002	#endif
		1003	{
		1004	if (sigpipe [0] == sigpipe [1])
		1005	if (pipe (sigpipe))
		1006	return 0;
		1007
		1008	if (!ev_default_loop_ptr)
		1009	{
		1010	#if EV_MULTIPLICITY
		1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1012	#else
		1013	ev_default_loop_ptr = 1;
		1014	#endif
		1015
		1016	loop_init (EV_A_ flags);
		1017
		1018	if (ev_backend (EV_A))
589	{	1019	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1020	siginit (EV_A);
593		1021
594	#ifndef WIN32	1022	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1027	#endif
600	}	1028	}
		1029	else
		1030	ev_default_loop_ptr = 0;
601	}	1031	}
602		1032
603	return method;	1033	return ev_default_loop_ptr;
604	}	1034	}
605		1035
		1036	void
		1037	ev_default_destroy (void)
		1038	{
606	#ifdef EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
607		1040	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	1041	#endif
		1042
		1043	#ifndef _WIN32
		1044	ev_ref (EV_A); /* child watcher */
		1045	ev_signal_stop (EV_A_ &childev);
		1046	#endif
		1047
		1048	ev_ref (EV_A); /* signal watcher */
		1049	ev_io_stop (EV_A_ &sigev);
		1050
		1051	close (sigpipe [0]); sigpipe [0] = 0;
		1052	close (sigpipe [1]); sigpipe [1] = 0;
		1053
		1054	loop_destroy (EV_A);
		1055	}
		1056
		1057	void
		1058	ev_default_fork (void)
		1059	{
		1060	#if EV_MULTIPLICITY
		1061	struct ev_loop *loop = ev_default_loop_ptr;
		1062	#endif
		1063
		1064	if (backend)
		1065	postfork = 1;
		1066	}
634		1067
635	/*****************************************************************************/	1068	/*****************************************************************************/
636		1069
637	void	1070	int inline_size
638	ev_fork_prepare (void)	1071	any_pending (EV_P)
639	{	1072	{
640	/* nop */	1073	int pri;
641	}
642		1074
643	void	1075	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	1076	if (pendingcnt [pri])
645	{	1077	return 1;
646	/* nop */
647	}
648		1078
649	void	1079	return 0;
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}	1080	}
666		1081
667	/*****************************************************************************/	1082	void inline_speed
668
669	static void
670	call_pending (EV_P)	1083	call_pending (EV_P)
671	{	1084	{
672	int pri;	1085	int pri;
673		1086
674	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
676	{	1089	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1091
679	if (p->w)	1092	if (expect_true (p->w))
680	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
681	p->w->pending = 0;	1096	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
683	}	1098	}
684	}	1099	}
685	}	1100	}
686		1101
687	static void	1102	void inline_size
688	timers_reify (EV_P)	1103	timers_reify (EV_P)
689	{	1104	{
690	while (timercnt && timers [0]->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	1106	{
692	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
		1108
		1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		1110
694	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
695	if (w->repeat)	1112	if (w->repeat)
696	{	1113	{
697	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
698	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
699	downheap ((WT *)timers, timercnt, 0);	1120	downheap ((WT *)timers, timercnt, 0);
700	}	1121	}
701	else	1122	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1124
704	event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1126	}
706	}	1127	}
707		1128
708	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
709	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
710	{	1132	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1134	{
713	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
		1136
		1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
714		1138
715	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
716	if (w->interval)	1140	if (w->reschedule_cb)
717	{	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	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1150	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1151	}
722	else	1152	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1154
725	event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1156	}
727	}	1157	}
728		1158
729	static void	1159	static void noinline
730	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
731	{	1161	{
732	int i;	1162	int i;
733		1163
734	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
736	{	1166	{
737	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
738		1168
		1169	if (w->reschedule_cb)
		1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1171	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1173	}
752	}
753		1174
754	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
755	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
756	{	1183	{
757	mn_now = get_clock ();	1184	mn_now = get_clock ();
758		1185
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1187	{
761	rt_now = rtmn_diff + mn_now;	1188	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1189	return 0;
763	}	1190	}
764	else	1191	else
765	{	1192	{
766	now_floor = mn_now;	1193	now_floor = mn_now;
767	rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
768	return 1;	1195	return 1;
769	}	1196	}
770	}	1197	}
771		1198
772	static void	1199	void inline_size
773	time_update (EV_P)	1200	time_update (EV_P)
774	{	1201	{
775	int i;	1202	int i;
776		1203
777	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
779	{	1206	{
780	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
781	{	1208	{
782	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
783		1210
784	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; )
785	{	1220	{
786	rtmn_diff = rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
787		1222
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1224	return; /* all is well */
790		1225
791	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1227	mn_now = get_clock ();
793	now_floor = mn_now;	1228	now_floor = mn_now;
794	}	1229	}
795		1230
		1231	# if EV_PERIODIC_ENABLE
796	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1236	}
800	}	1237	}
801	else	1238	else
802	#endif	1239	#endif
803	{	1240	{
804	rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
805		1242
806	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))
807	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
808	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
809		1248
810	/* 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 */
811	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1252	}
814		1253
815	mn_now = rt_now;	1254	mn_now = ev_rt_now;
816	}	1255	}
817	}	1256	}
818		1257
819	void	1258	void
820	ev_ref (EV_P)	1259	ev_ref (EV_P)
…		…
831	static int loop_done;	1270	static int loop_done;
832		1271
833	void	1272	void
834	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
835	{	1274	{
836	double block;
837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
838		1278
839	do	1279	while (activecnt)
840	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	#if EV_FORK_ENABLE
		1283	if (expect_false (postfork))
		1284	if (forkcnt)
		1285	{
		1286	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1287	call_pending (EV_A);
		1288	}
		1289	#endif
		1290
841	/* queue check watchers (and execute them) */	1291	/* queue check watchers (and execute them) */
842	if (expect_false (preparecnt))	1292	if (expect_false (preparecnt))
843	{	1293	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1294	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1295	call_pending (EV_A);
846	}	1296	}
847		1297
		1298	/* we might have forked, so reify kernel state if necessary */
		1299	if (expect_false (postfork))
		1300	loop_fork (EV_A);
		1301
848	/* update fd-related kernel structures */	1302	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1303	fd_reify (EV_A);
850		1304
851	/* calculate blocking time */	1305	/* calculate blocking time */
		1306	{
		1307	double block;
852		1308
853	/* we only need this for !monotonic clockor timers, but as we basically	1309	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
854	always have timers, we just calculate it always */	1310	block = 0.; /* do not block at all */
		1311	else
		1312	{
		1313	/* update time to cancel out callback processing overhead */
855	#if EV_USE_MONOTONIC	1314	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1315	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1316	time_update_monotonic (EV_A);
858	else	1317	else
859	#endif	1318	#endif
860	{	1319	{
861	rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1321	mn_now = ev_rt_now;
863	}	1322	}
864		1323
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;
867	else
868	{
869	block = MAX_BLOCKTIME;	1324	block = MAX_BLOCKTIME;
870		1325
871	if (timercnt)	1326	if (timercnt)
872	{	1327	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1328	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
874	if (block > to) block = to;	1329	if (block > to) block = to;
875	}	1330	}
876		1331
		1332	#if EV_PERIODIC_ENABLE
877	if (periodiccnt)	1333	if (periodiccnt)
878	{	1334	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1335	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	1336	if (block > to) block = to;
881	}	1337	}
		1338	#endif
882		1339
883	if (block < 0.) block = 0.;	1340	if (expect_false (block < 0.)) block = 0.;
884	}	1341	}
885		1342
886	method_poll (EV_A_ block);	1343	backend_poll (EV_A_ block);
		1344	}
887		1345
888	/* update rt_now, do magic */	1346	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1347	time_update (EV_A);
890		1348
891	/* queue pending timers and reschedule them */	1349	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1350	timers_reify (EV_A); /* relative timers called last */
		1351	#if EV_PERIODIC_ENABLE
893	periodics_reify (EV_A); /* absolute timers called first */	1352	periodics_reify (EV_A); /* absolute timers called first */
		1353	#endif
894		1354
895	/* queue idle watchers unless io or timers are pending */	1355	/* queue idle watchers unless other events are pending */
896	if (!pendingcnt)	1356	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1357	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1358
899	/* queue check watchers, to be executed first */	1359	/* queue check watchers, to be executed first */
900	if (checkcnt)	1360	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		1362
903	call_pending (EV_A);	1363	call_pending (EV_A);
904	}
905	while (activecnt && !loop_done);
906		1364
907	if (loop_done != 2)	1365	if (expect_false (loop_done))
908	loop_done = 0;	1366	break;
		1367	}
		1368
		1369	if (loop_done == EVUNLOOP_ONE)
		1370	loop_done = EVUNLOOP_CANCEL;
909	}	1371	}
910		1372
911	void	1373	void
912	ev_unloop (EV_P_ int how)	1374	ev_unloop (EV_P_ int how)
913	{	1375	{
914	loop_done = how;	1376	loop_done = how;
915	}	1377	}
916		1378
917	/*****************************************************************************/	1379	/*****************************************************************************/
918		1380
919	inline void	1381	void inline_size
920	wlist_add (WL *head, WL elem)	1382	wlist_add (WL *head, WL elem)
921	{	1383	{
922	elem->next = *head;	1384	elem->next = *head;
923	*head = elem;	1385	*head = elem;
924	}	1386	}
925		1387
926	inline void	1388	void inline_size
927	wlist_del (WL *head, WL elem)	1389	wlist_del (WL *head, WL elem)
928	{	1390	{
929	while (*head)	1391	while (*head)
930	{	1392	{
931	if (*head == elem)	1393	if (*head == elem)
…		…
936		1398
937	head = &(*head)->next;	1399	head = &(*head)->next;
938	}	1400	}
939	}	1401	}
940		1402
941	inline void	1403	void inline_speed
942	ev_clear_pending (EV_P_ W w)	1404	ev_clear_pending (EV_P_ W w)
943	{	1405	{
944	if (w->pending)	1406	if (w->pending)
945	{	1407	{
946	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1408	pendings [ABSPRI (w)][w->pending - 1].w = 0;
947	w->pending = 0;	1409	w->pending = 0;
948	}	1410	}
949	}	1411	}
950		1412
951	inline void	1413	void inline_speed
952	ev_start (EV_P_ W w, int active)	1414	ev_start (EV_P_ W w, int active)
953	{	1415	{
954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1416	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1417	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
956		1418
957	w->active = active;	1419	w->active = active;
958	ev_ref (EV_A);	1420	ev_ref (EV_A);
959	}	1421	}
960		1422
961	inline void	1423	void inline_size
962	ev_stop (EV_P_ W w)	1424	ev_stop (EV_P_ W w)
963	{	1425	{
964	ev_unref (EV_A);	1426	ev_unref (EV_A);
965	w->active = 0;	1427	w->active = 0;
966	}	1428	}
967		1429
968	/*****************************************************************************/	1430	/*****************************************************************************/
969		1431
970	void	1432	void
971	ev_io_start (EV_P_ struct ev_io *w)	1433	ev_io_start (EV_P_ ev_io *w)
972	{	1434	{
973	int fd = w->fd;	1435	int fd = w->fd;
974		1436
975	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
976	return;	1438	return;
977		1439
978	assert (("ev_io_start called with negative fd", fd >= 0));	1440	assert (("ev_io_start called with negative fd", fd >= 0));
979		1441
980	ev_start (EV_A_ (W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1443	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1444	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1445
984	fd_change (EV_A_ fd);	1446	fd_change (EV_A_ fd);
985	}	1447	}
986		1448
987	void	1449	void
988	ev_io_stop (EV_P_ struct ev_io *w)	1450	ev_io_stop (EV_P_ ev_io *w)
989	{	1451	{
990	ev_clear_pending (EV_A_ (W)w);	1452	ev_clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1453	if (expect_false (!ev_is_active (w)))
992	return;	1454	return;
		1455
		1456	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
993		1457
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1458	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1459	ev_stop (EV_A_ (W)w);
996		1460
997	fd_change (EV_A_ w->fd);	1461	fd_change (EV_A_ w->fd);
998	}	1462	}
999		1463
1000	void	1464	void
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1465	ev_timer_start (EV_P_ ev_timer *w)
1002	{	1466	{
1003	if (ev_is_active (w))	1467	if (expect_false (ev_is_active (w)))
1004	return;	1468	return;
1005		1469
1006	w->at += mn_now;	1470	((WT)w)->at += mn_now;
1007		1471
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1472	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1473
1010	ev_start (EV_A_ (W)w, ++timercnt);	1474	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1475	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1012	timers [timercnt - 1] = w;	1476	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1477	upheap ((WT *)timers, timercnt - 1);
1014	}
1015		1478
		1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1480	}
		1481
1016	void	1482	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1483	ev_timer_stop (EV_P_ ev_timer *w)
1018	{	1484	{
1019	ev_clear_pending (EV_A_ (W)w);	1485	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1486	if (expect_false (!ev_is_active (w)))
1021	return;	1487	return;
1022		1488
		1489	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1490
1023	if (w->active < timercnt--)	1491	if (expect_true (((W)w)->active < timercnt--))
1024	{	1492	{
1025	timers [w->active - 1] = timers [timercnt];	1493	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1495	}
1028		1496
1029	w->at = w->repeat;	1497	((WT)w)->at -= mn_now;
1030		1498
1031	ev_stop (EV_A_ (W)w);	1499	ev_stop (EV_A_ (W)w);
1032	}	1500	}
1033		1501
1034	void	1502	void
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1503	ev_timer_again (EV_P_ ev_timer *w)
1036	{	1504	{
1037	if (ev_is_active (w))	1505	if (ev_is_active (w))
1038	{	1506	{
1039	if (w->repeat)	1507	if (w->repeat)
1040	{	1508	{
1041	w->at = mn_now + w->repeat;	1509	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1510	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1511	}
1044	else	1512	else
1045	ev_timer_stop (EV_A_ w);	1513	ev_timer_stop (EV_A_ w);
1046	}	1514	}
1047	else if (w->repeat)	1515	else if (w->repeat)
		1516	{
		1517	w->at = w->repeat;
1048	ev_timer_start (EV_A_ w);	1518	ev_timer_start (EV_A_ w);
		1519	}
1049	}	1520	}
1050		1521
		1522	#if EV_PERIODIC_ENABLE
1051	void	1523	void
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1524	ev_periodic_start (EV_P_ ev_periodic *w)
1053	{	1525	{
1054	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1055	return;	1527	return;
1056		1528
		1529	if (w->reschedule_cb)
		1530	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1531	else if (w->interval)
		1532	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1533	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1534	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1535	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1536	}
1062		1537
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1538	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1539	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	1540	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1541	upheap ((WT *)periodics, periodiccnt - 1);
1067	}
1068		1542
		1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1544	}
		1545
1069	void	1546	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1547	ev_periodic_stop (EV_P_ ev_periodic *w)
1071	{	1548	{
1072	ev_clear_pending (EV_A_ (W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1550	if (expect_false (!ev_is_active (w)))
1074	return;	1551	return;
1075		1552
		1553	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1554
1076	if (w->active < periodiccnt--)	1555	if (expect_true (((W)w)->active < periodiccnt--))
1077	{	1556	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1557	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1558	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1559	}
1081		1560
1082	ev_stop (EV_A_ (W)w);	1561	ev_stop (EV_A_ (W)w);
1083	}	1562	}
		1563
		1564	void
		1565	ev_periodic_again (EV_P_ ev_periodic *w)
		1566	{
		1567	/* TODO: use adjustheap and recalculation */
		1568	ev_periodic_stop (EV_A_ w);
		1569	ev_periodic_start (EV_A_ w);
		1570	}
		1571	#endif
1084		1572
1085	#ifndef SA_RESTART	1573	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1574	# define SA_RESTART 0
1087	#endif	1575	#endif
1088		1576
1089	void	1577	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1578	ev_signal_start (EV_P_ ev_signal *w)
1091	{	1579	{
		1580	#if EV_MULTIPLICITY
		1581	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1582	#endif
1092	if (ev_is_active (w))	1583	if (expect_false (ev_is_active (w)))
1093	return;	1584	return;
1094		1585
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1586	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1587
1097	ev_start (EV_A_ (W)w, 1);	1588	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1589	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1591
1101	if (!w->next)	1592	if (!((WL)w)->next)
1102	{	1593	{
		1594	#if _WIN32
		1595	signal (w->signum, sighandler);
		1596	#else
1103	struct sigaction sa;	1597	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1598	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1599	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1600	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1601	sigaction (w->signum, &sa, 0);
		1602	#endif
1108	}	1603	}
1109	}	1604	}
1110		1605
1111	void	1606	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1607	ev_signal_stop (EV_P_ ev_signal *w)
1113	{	1608	{
1114	ev_clear_pending (EV_A_ (W)w);	1609	ev_clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1610	if (expect_false (!ev_is_active (w)))
1116	return;	1611	return;
1117		1612
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1613	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1120		1615
1121	if (!signals [w->signum - 1].head)	1616	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1617	signal (w->signum, SIG_DFL);
1123	}	1618	}
1124		1619
1125	void	1620	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1621	ev_child_start (EV_P_ ev_child *w)
1193	{	1622	{
		1623	#if EV_MULTIPLICITY
		1624	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1625	#endif
1194	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1195	return;	1627	return;
1196		1628
1197	ev_start (EV_A_ (W)w, 1);	1629	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}	1631	}
1200		1632
1201	void	1633	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	1634	ev_child_stop (EV_P_ ev_child *w)
1203	{	1635	{
1204	ev_clear_pending (EV_A_ (W)w);	1636	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	1637	if (expect_false (!ev_is_active (w)))
1206	return;	1638	return;
1207		1639
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1640	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1209	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1210	}	1642	}
1211		1643
		1644	#if EV_STAT_ENABLE
		1645
		1646	# ifdef _WIN32
		1647	# undef lstat
		1648	# define lstat(a,b) _stati64 (a,b)
		1649	# endif
		1650
		1651	#define DEF_STAT_INTERVAL 5.0074891
		1652	#define MIN_STAT_INTERVAL 0.1074891
		1653
		1654	void
		1655	ev_stat_stat (EV_P_ ev_stat *w)
		1656	{
		1657	if (lstat (w->path, &w->attr) < 0)
		1658	w->attr.st_nlink = 0;
		1659	else if (!w->attr.st_nlink)
		1660	w->attr.st_nlink = 1;
		1661	}
		1662
		1663	static void
		1664	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1665	{
		1666	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1667
		1668	/* we copy this here each the time so that */
		1669	/* prev has the old value when the callback gets invoked */
		1670	w->prev = w->attr;
		1671	ev_stat_stat (EV_A_ w);
		1672
		1673	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1674	ev_feed_event (EV_A_ w, EV_STAT);
		1675	}
		1676
		1677	void
		1678	ev_stat_start (EV_P_ ev_stat *w)
		1679	{
		1680	if (expect_false (ev_is_active (w)))
		1681	return;
		1682
		1683	/* since we use memcmp, we need to clear any padding data etc. */
		1684	memset (&w->prev, 0, sizeof (ev_statdata));
		1685	memset (&w->attr, 0, sizeof (ev_statdata));
		1686
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (w->interval < MIN_STAT_INTERVAL)
		1690	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1691
		1692	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1693	ev_set_priority (&w->timer, ev_priority (w));
		1694	ev_timer_start (EV_A_ &w->timer);
		1695
		1696	ev_start (EV_A_ (W)w, 1);
		1697	}
		1698
		1699	void
		1700	ev_stat_stop (EV_P_ ev_stat *w)
		1701	{
		1702	ev_clear_pending (EV_A_ (W)w);
		1703	if (expect_false (!ev_is_active (w)))
		1704	return;
		1705
		1706	ev_timer_stop (EV_A_ &w->timer);
		1707
		1708	ev_stop (EV_A_ (W)w);
		1709	}
		1710	#endif
		1711
		1712	void
		1713	ev_idle_start (EV_P_ ev_idle *w)
		1714	{
		1715	if (expect_false (ev_is_active (w)))
		1716	return;
		1717
		1718	ev_start (EV_A_ (W)w, ++idlecnt);
		1719	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1720	idles [idlecnt - 1] = w;
		1721	}
		1722
		1723	void
		1724	ev_idle_stop (EV_P_ ev_idle *w)
		1725	{
		1726	ev_clear_pending (EV_A_ (W)w);
		1727	if (expect_false (!ev_is_active (w)))
		1728	return;
		1729
		1730	{
		1731	int active = ((W)w)->active;
		1732	idles [active - 1] = idles [--idlecnt];
		1733	((W)idles [active - 1])->active = active;
		1734	}
		1735
		1736	ev_stop (EV_A_ (W)w);
		1737	}
		1738
		1739	void
		1740	ev_prepare_start (EV_P_ ev_prepare *w)
		1741	{
		1742	if (expect_false (ev_is_active (w)))
		1743	return;
		1744
		1745	ev_start (EV_A_ (W)w, ++preparecnt);
		1746	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1747	prepares [preparecnt - 1] = w;
		1748	}
		1749
		1750	void
		1751	ev_prepare_stop (EV_P_ ev_prepare *w)
		1752	{
		1753	ev_clear_pending (EV_A_ (W)w);
		1754	if (expect_false (!ev_is_active (w)))
		1755	return;
		1756
		1757	{
		1758	int active = ((W)w)->active;
		1759	prepares [active - 1] = prepares [--preparecnt];
		1760	((W)prepares [active - 1])->active = active;
		1761	}
		1762
		1763	ev_stop (EV_A_ (W)w);
		1764	}
		1765
		1766	void
		1767	ev_check_start (EV_P_ ev_check *w)
		1768	{
		1769	if (expect_false (ev_is_active (w)))
		1770	return;
		1771
		1772	ev_start (EV_A_ (W)w, ++checkcnt);
		1773	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1774	checks [checkcnt - 1] = w;
		1775	}
		1776
		1777	void
		1778	ev_check_stop (EV_P_ ev_check *w)
		1779	{
		1780	ev_clear_pending (EV_A_ (W)w);
		1781	if (expect_false (!ev_is_active (w)))
		1782	return;
		1783
		1784	{
		1785	int active = ((W)w)->active;
		1786	checks [active - 1] = checks [--checkcnt];
		1787	((W)checks [active - 1])->active = active;
		1788	}
		1789
		1790	ev_stop (EV_A_ (W)w);
		1791	}
		1792
		1793	#if EV_EMBED_ENABLE
		1794	void noinline
		1795	ev_embed_sweep (EV_P_ ev_embed *w)
		1796	{
		1797	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1798	}
		1799
		1800	static void
		1801	embed_cb (EV_P_ ev_io *io, int revents)
		1802	{
		1803	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1804
		1805	if (ev_cb (w))
		1806	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1807	else
		1808	ev_embed_sweep (loop, w);
		1809	}
		1810
		1811	void
		1812	ev_embed_start (EV_P_ ev_embed *w)
		1813	{
		1814	if (expect_false (ev_is_active (w)))
		1815	return;
		1816
		1817	{
		1818	struct ev_loop *loop = w->loop;
		1819	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1820	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1821	}
		1822
		1823	ev_set_priority (&w->io, ev_priority (w));
		1824	ev_io_start (EV_A_ &w->io);
		1825
		1826	ev_start (EV_A_ (W)w, 1);
		1827	}
		1828
		1829	void
		1830	ev_embed_stop (EV_P_ ev_embed *w)
		1831	{
		1832	ev_clear_pending (EV_A_ (W)w);
		1833	if (expect_false (!ev_is_active (w)))
		1834	return;
		1835
		1836	ev_io_stop (EV_A_ &w->io);
		1837
		1838	ev_stop (EV_A_ (W)w);
		1839	}
		1840	#endif
		1841
		1842	#if EV_FORK_ENABLE
		1843	void
		1844	ev_fork_start (EV_P_ ev_fork *w)
		1845	{
		1846	if (expect_false (ev_is_active (w)))
		1847	return;
		1848
		1849	ev_start (EV_A_ (W)w, ++forkcnt);
		1850	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1851	forks [forkcnt - 1] = w;
		1852	}
		1853
		1854	void
		1855	ev_fork_stop (EV_P_ ev_fork *w)
		1856	{
		1857	ev_clear_pending (EV_A_ (W)w);
		1858	if (expect_false (!ev_is_active (w)))
		1859	return;
		1860
		1861	{
		1862	int active = ((W)w)->active;
		1863	forks [active - 1] = forks [--forkcnt];
		1864	((W)forks [active - 1])->active = active;
		1865	}
		1866
		1867	ev_stop (EV_A_ (W)w);
		1868	}
		1869	#endif
		1870
1212	/*****************************************************************************/	1871	/*****************************************************************************/
1213		1872
1214	struct ev_once	1873	struct ev_once
1215	{	1874	{
1216	struct ev_io io;	1875	ev_io io;
1217	struct ev_timer to;	1876	ev_timer to;
1218	void (cb)(int revents, void arg);	1877	void (cb)(int revents, void arg);
1219	void *arg;	1878	void *arg;
1220	};	1879	};
1221		1880
1222	static void	1881	static void
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1884	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1885	void *arg = once->arg;
1227		1886
1228	ev_io_stop (EV_A_ &once->io);	1887	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1888	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1889	ev_free (once);
1231		1890
1232	cb (revents, arg);	1891	cb (revents, arg);
1233	}	1892	}
1234		1893
1235	static void	1894	static void
1236	once_cb_io (EV_P_ struct ev_io *w, int revents)	1895	once_cb_io (EV_P_ ev_io *w, int revents)
1237	{	1896	{
1238	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1897	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1239	}	1898	}
1240		1899
1241	static void	1900	static void
1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1901	once_cb_to (EV_P_ ev_timer *w, int revents)
1243	{	1902	{
1244	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1903	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1245	}	1904	}
1246		1905
1247	void	1906	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1907	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1908	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1909	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1910
1252	if (!once)	1911	if (expect_false (!once))
		1912	{
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1913	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1914	return;
1255	{	1915	}
		1916
1256	once->cb = cb;	1917	once->cb = cb;
1257	once->arg = arg;	1918	once->arg = arg;
1258		1919
1259	ev_watcher_init (&once->io, once_cb_io);	1920	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1921	if (fd >= 0)
1261	{	1922	{
1262	ev_io_set (&once->io, fd, events);	1923	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1924	ev_io_start (EV_A_ &once->io);
1264	}	1925	}
1265		1926
1266	ev_watcher_init (&once->to, once_cb_to);	1927	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1928	if (timeout >= 0.)
1268	{	1929	{
1269	ev_timer_set (&once->to, timeout, 0.);	1930	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1931	ev_timer_start (EV_A_ &once->to);
1271	}
1272	}
1273	}
1274
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{	1932	}
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	1933	}
1352		1934
		1935	#ifdef __cplusplus
		1936	}
1353	#endif	1937	#endif
1354		1938
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC