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

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 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	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USEV_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
80		158
81	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
89	#endif	167	#endif
90		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
91	/**/	173	/**/
92		174
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#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) */	176	#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 */	177	#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 */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		179
98	#ifndef EV_EMBED	180	#ifdef EV_H
		181	# include EV_H
		182	#else
99	# include "ev.h"	183	# include "ev.h"
100	#endif	184	#endif
101		185
102	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
104	# define inline inline	188	# define inline static inline
105	#else	189	#else
106	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
107	# define inline static	191	# define inline static
108	#endif	192	#endif
109		193
…		…
111	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
112		196
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
116	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
119		206
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
122	/*****************************************************************************/	213	/*****************************************************************************/
123		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
124	typedef struct	263	typedef struct
125	{	264	{
126	struct ev_watcher_list *head;	265	WL head;
127	unsigned char events;	266	unsigned char events;
128	unsigned char reify;	267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
129	} ANFD;	271	} ANFD;
130		272
131	typedef struct	273	typedef struct
132	{	274	{
133	W w;	275	W w;
134	int events;	276	int events;
135	} ANPENDING;	277	} ANPENDING;
136		278
137	#if EV_MULTIPLICITY	279	#if EV_MULTIPLICITY
138		280
139	struct ev_loop	281	struct ev_loop
140	{	282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	285	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	286	#include "ev_vars.h"
143	};
144	# undef VAR	287	#undef VAR
		288	};
145	# include "ev_wrap.h"	289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
146		293
147	#else	294	#else
148		295
		296	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	297	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	298	#include "ev_vars.h"
151	# undef VAR	299	#undef VAR
		300
		301	static int ev_default_loop_ptr;
152		302
153	#endif	303	#endif
154		304
155	/*****************************************************************************/	305	/*****************************************************************************/
156		306
157	inline ev_tstamp	307	ev_tstamp
158	ev_time (void)	308	ev_time (void)
159	{	309	{
160	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
161	struct timespec ts;	311	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
181	#endif	331	#endif
182		332
183	return ev_time ();	333	return ev_time ();
184	}	334	}
185		335
		336	#if EV_MULTIPLICITY
186	ev_tstamp	337	ev_tstamp
187	ev_now (EV_P)	338	ev_now (EV_P)
188	{	339	{
189	return rt_now;	340	return ev_rt_now;
190	}	341	}
		342	#endif
191		343
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
193		345
194	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
196	{ \	348	{ \
197	int newcnt = cur; \	349	int newcnt = cur; \
198	do \	350	do \
199	{ \	351	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	353	} \
202	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
203	\	355	\
204	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	358	cur = newcnt; \
207	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
208		371
209	/*****************************************************************************/	372	/*****************************************************************************/
210		373
211	static void	374	static void
212	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
…		…
219		382
220	++base;	383	++base;
221	}	384	}
222	}	385	}
223		386
224	static void	387	void
225	event (EV_P_ W w, int events)	388	ev_feed_event (EV_P_ void *w, int revents)
226	{	389	{
227	if (w->pending)	390	W w_ = (W)w;
		391
		392	if (expect_false (w_->pending))
228	{	393	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
230	return;	395	return;
231	}	396	}
232		397
233	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
235	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
237	}	402	}
238		403
239	static void	404	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{	406	{
242	int i;	407	int i;
243		408
244	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
246	}	411	}
247		412
248	static void	413	inline void
249	fd_event (EV_P_ int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
250	{	415	{
251	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	417	struct ev_io *w;
253		418
254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	{	420	{
256	int ev = w->events & events;	421	int ev = w->events & revents;
257		422
258	if (ev)	423	if (ev)
259	event (EV_A_ (W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
260	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
261	}	432	}
262		433
263	/*****************************************************************************/	434	/*****************************************************************************/
264		435
265	static void	436	inline void
266	fd_reify (EV_P)	437	fd_reify (EV_P)
267	{	438	{
268	int i;	439	int i;
269		440
270	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
276	int events = 0;	447	int events = 0;
277		448
278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
279	events \|= w->events;	450	events \|= w->events;
280		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
281	anfd->reify = 0;	461	anfd->reify = 0;
282		462
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	464	anfd->events = events;
287	}
288	}	465	}
289		466
290	fdchangecnt = 0;	467	fdchangecnt = 0;
291	}	468	}
292		469
293	static void	470	static void
294	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
295	{	472	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
297	return;	474	return;
298		475
299	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
300		477
301	++fdchangecnt;	478	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
304	}	481	}
305		482
306	static void	483	static void
307	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
309	struct ev_io *w;	486	struct ev_io *w;
310		487
311	while ((w = (struct ev_io *)anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
312	{	489	{
313	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
315	}	492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
316	}	503	}
317		504
318	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
319	static void	506	static void
320	fd_ebadf (EV_P)	507	fd_ebadf (EV_P)
321	{	508	{
322	int fd;	509	int fd;
323		510
324	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	512	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	514	fd_kill (EV_A_ fd);
328	}	515	}
329		516
330	/* called on ENOMEM in select/poll to kill some fds and retry */	517	/* called on ENOMEM in select/poll to kill some fds and retry */
331	static void	518	static void
332	fd_enomem (EV_P)	519	fd_enomem (EV_P)
333	{	520	{
334	int fd = anfdmax;	521	int fd;
335		522
336	while (fd--)	523	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	524	if (anfds [fd].events)
338	{	525	{
339	close (fd);
340	fd_kill (EV_A_ fd);	526	fd_kill (EV_A_ fd);
341	return;	527	return;
342	}	528	}
343	}	529	}
344		530
345	/* susually called after fork if method needs to re-arm all fds from scratch */	531	/* usually called after fork if backend needs to re-arm all fds from scratch */
346	static void	532	static void
347	fd_rearm_all (EV_P)	533	fd_rearm_all (EV_P)
348	{	534	{
349	int fd;	535	int fd;
350		536
351	/* this should be highly optimised to not do anything but set a flag */	537	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	538	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	539	if (anfds [fd].events)
354	{	540	{
355	anfds [fd].events = 0;	541	anfds [fd].events = 0;
356	fd_change (fd);	542	fd_change (EV_A_ fd);
357	}	543	}
358	}	544	}
359		545
360	/*****************************************************************************/	546	/*****************************************************************************/
361		547
…		…
365	WT w = heap [k];	551	WT w = heap [k];
366		552
367	while (k && heap [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
368	{	554	{
369	heap [k] = heap [k >> 1];	555	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
371	k >>= 1;	557	k >>= 1;
372	}	558	}
373		559
374	heap [k] = w;	560	heap [k] = w;
375	heap [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
376		562
377	}	563	}
378		564
379	static void	565	static void
380	downheap (WT *heap, int N, int k)	566	downheap (WT *heap, int N, int k)
…		…
390		576
391	if (w->at <= heap [j]->at)	577	if (w->at <= heap [j]->at)
392	break;	578	break;
393		579
394	heap [k] = heap [j];	580	heap [k] = heap [j];
395	heap [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
396	k = j;	582	k = j;
397	}	583	}
398		584
399	heap [k] = w;	585	heap [k] = w;
400	heap [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
401	}	594	}
402		595
403	/*****************************************************************************/	596	/*****************************************************************************/
404		597
405	typedef struct	598	typedef struct
406	{	599	{
407	struct ev_watcher_list *head;	600	WL head;
408	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
409	} ANSIG;	602	} ANSIG;
410		603
411	static ANSIG *signals;	604	static ANSIG *signals;
412	static int signalmax;	605	static int signalmax;
413		606
414	static int sigpipe [2];	607	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	608	static sig_atomic_t volatile gotsig;
		609	static struct ev_io sigev;
416		610
417	static void	611	static void
418	signals_init (ANSIG *base, int count)	612	signals_init (ANSIG *base, int count)
419	{	613	{
420	while (count--)	614	while (count--)
…		…
427	}	621	}
428		622
429	static void	623	static void
430	sighandler (int signum)	624	sighandler (int signum)
431	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
432	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
433		631
434	if (!gotsig)	632	if (!gotsig)
435	{	633	{
436	int old_errno = errno;	634	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	637	errno = old_errno;
440	}	638	}
441	}	639	}
442		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
443	static void	661	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
445	{	663	{
446	struct ev_watcher_list *w;
447	int signum;	664	int signum;
448		665
449	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	667	gotsig = 0;
451		668
452	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
454	{	671	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;	672	}
456		673
457	for (w = signals [signum].head; w; w = w->next)	674	static void
458	event (EV_A_ (W)w, EV_SIGNAL);	675	fd_intern (int fd)
459	}	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
		681	fcntl (fd, F_SETFD, FD_CLOEXEC);
		682	fcntl (fd, F_SETFL, O_NONBLOCK);
		683	#endif
460	}	684	}
461		685
462	static void	686	static void
463	siginit (EV_P)	687	siginit (EV_P)
464	{	688	{
465	#ifndef WIN32	689	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		691
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	693	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	695	}
478		696
479	/*****************************************************************************/	697	/*****************************************************************************/
480		698
		699	static struct ev_child *childs [PID_HASHSIZE];
		700
481	#ifndef WIN32	701	#ifndef _WIN32
		702
		703	static struct ev_signal childev;
482		704
483	#ifndef WCONTINUED	705	#ifndef WCONTINUED
484	# define WCONTINUED 0	706	# define WCONTINUED 0
485	#endif	707	#endif
486		708
…		…
490	struct ev_child *w;	712	struct ev_child *w;
491		713
492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
493	if (w->pid == pid \|\| !w->pid)	715	if (w->pid == pid \|\| !w->pid)
494	{	716	{
495	w->priority = sw->priority; /* need to do it now */	717	ev_priority (w) = ev_priority (sw); /* need to do it now */
496	w->rpid = pid;	718	w->rpid = pid;
497	w->rstatus = status;	719	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);	720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
499	}	721	}
500	}	722	}
501		723
502	static void	724	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	725	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
505	int pid, status;	727	int pid, status;
506		728
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	730	{
509	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
		732	/* we need to do it this way so that the callback gets called before we continue */
510	event (EV_A_ (W)sw, EV_SIGNAL);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		734
512	child_reap (EV_A_ sw, pid, pid, status);	735	child_reap (EV_A_ sw, pid, pid, status);
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
514	}	737	}
515	}	738	}
516		739
517	#endif	740	#endif
518		741
519	/*****************************************************************************/	742	/*****************************************************************************/
520		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
521	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
522	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
523	#endif	749	#endif
524	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	751	# include "ev_epoll.c"
526	#endif	752	#endif
527	#if EV_USEV_POLL	753	#if EV_USE_POLL
528	# include "ev_poll.c"	754	# include "ev_poll.c"
529	#endif	755	#endif
530	#if EV_USE_SELECT	756	#if EV_USE_SELECT
531	# include "ev_select.c"	757	# include "ev_select.c"
532	#endif	758	#endif
…		…
545		771
546	/* return true if we are running with elevated privileges and should ignore env variables */	772	/* return true if we are running with elevated privileges and should ignore env variables */
547	static int	773	static int
548	enable_secure (void)	774	enable_secure (void)
549	{	775	{
550	#ifdef WIN32	776	#ifdef _WIN32
551	return 0;	777	return 0;
552	#else	778	#else
553	return getuid () != geteuid ()	779	return getuid () != geteuid ()
554	\|\| getgid () != getegid ();	780	\|\| getgid () != getegid ();
555	#endif	781	#endif
556	}	782	}
557		783
558	int	784	unsigned int
559	ev_method (EV_P)	785	ev_supported_backends (void)
560	{	786	{
561	return method;	787	unsigned int flags = 0;
562	}
563		788
564	static void	789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
565	loop_init (EV_P_ int methods)	790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
566	{	800	{
567	if (!method)	801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
568	{	826	{
569	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
570	{	828	{
571	struct timespec ts;	829	struct timespec ts;
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	831	have_monotonic = 1;
574	}	832	}
575	#endif	833	#endif
576		834
577	rt_now = ev_time ();	835	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	836	mn_now = get_clock ();
579	now_floor = mn_now;	837	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	838	rtmn_diff = ev_rt_now - mn_now;
581		839
582	if (methods == EVMETHOD_AUTO)	840	if (!(flags & EVFLAG_NOENV)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	843	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else
586	methods = EVMETHOD_ANY;
587		844
588	method = 0;	845	if (!(flags & 0x0000ffffUL))
		846	flags \|= ev_recommended_backends ();
		847
		848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		851	#endif
589	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591	#endif	854	#endif
592	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594	#endif	857	#endif
595	#if EV_USEV_POLL	858	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597	#endif	860	#endif
598	#if EV_USE_SELECT	861	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600	#endif	863	#endif
601	}
602	}
603		864
604	void	865	ev_init (&sigev, sigcb);
		866	ev_set_priority (&sigev, EV_MAXPRI);
		867	}
		868	}
		869
		870	static void
605	loop_destroy (EV_P)	871	loop_destroy (EV_P)
606	{	872	{
		873	int i;
		874
		875	#if EV_USE_PORT
		876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		877	#endif
607	#if EV_USE_KQUEUE	878	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609	#endif	880	#endif
610	#if EV_USE_EPOLL	881	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612	#endif	883	#endif
613	#if EV_USEV_POLL	884	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615	#endif	886	#endif
616	#if EV_USE_SELECT	887	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618	#endif	889	#endif
619		890
620	method = 0;	891	for (i = NUMPRI; i--; )
621	/TODO/	892	array_free (pending, [i]);
622	}
623		893
624	void	894	/* have to use the microsoft-never-gets-it-right macro */
		895	array_free (fdchange, EMPTY0);
		896	array_free (timer, EMPTY0);
		897	#if EV_PERIODICS
		898	array_free (periodic, EMPTY0);
		899	#endif
		900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
		903
		904	backend = 0;
		905	}
		906
		907	static void
625	loop_fork (EV_P)	908	loop_fork (EV_P)
626	{	909	{
627	/TODO/	910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
628	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630	#endif	918	#endif
631	#if EV_USE_KQUEUE	919
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	920	if (ev_is_active (&sigev))
633	#endif	921	{
		922	/* default loop */
		923
		924	ev_ref (EV_A);
		925	ev_io_stop (EV_A_ &sigev);
		926	close (sigpipe [0]);
		927	close (sigpipe [1]);
		928
		929	while (pipe (sigpipe))
		930	syserr ("(libev) error creating pipe");
		931
		932	siginit (EV_A);
		933	}
		934
		935	postfork = 0;
634	}	936	}
635		937
636	#if EV_MULTIPLICITY	938	#if EV_MULTIPLICITY
637	struct ev_loop *	939	struct ev_loop *
638	ev_loop_new (int methods)	940	ev_loop_new (unsigned int flags)
639	{	941	{
640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
641		943
		944	memset (loop, 0, sizeof (struct ev_loop));
		945
642	loop_init (EV_A_ methods);	946	loop_init (EV_A_ flags);
643		947
644	if (ev_methods (EV_A))	948	if (ev_backend (EV_A))
645	return loop;	949	return loop;
646		950
647	return 0;	951	return 0;
648	}	952	}
649		953
650	void	954	void
651	ev_loop_destroy (EV_P)	955	ev_loop_destroy (EV_P)
652	{	956	{
653	loop_destroy (EV_A);	957	loop_destroy (EV_A);
654	free (loop);	958	ev_free (loop);
655	}	959	}
656		960
657	void	961	void
658	ev_loop_fork (EV_P)	962	ev_loop_fork (EV_P)
659	{	963	{
660	loop_fork (EV_A);	964	postfork = 1;
661	}	965	}
662		966
663	#endif	967	#endif
664		968
665	#if EV_MULTIPLICITY	969	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
670	#else	972	#else
671	static int default_loop;
672
673	int	973	int
		974	ev_default_loop (unsigned int flags)
674	#endif	975	#endif
675	ev_default_loop (int methods)
676	{	976	{
677	if (sigpipe [0] == sigpipe [1])	977	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	978	if (pipe (sigpipe))
679	return 0;	979	return 0;
680		980
681	if (!default_loop)	981	if (!ev_default_loop_ptr)
682	{	982	{
683	#if EV_MULTIPLICITY	983	#if EV_MULTIPLICITY
684	struct ev_loop *loop = default_loop = &default_loop_struct;	984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685	#else	985	#else
686	default_loop = 1;	986	ev_default_loop_ptr = 1;
687	#endif	987	#endif
688		988
689	loop_init (EV_A_ methods);	989	loop_init (EV_A_ flags);
690		990
691	if (ev_method (EV_A))	991	if (ev_backend (EV_A))
692	{	992	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	993	siginit (EV_A);
696		994
697	#ifndef WIN32	995	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	998	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	999	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	1000	#endif
703	}	1001	}
704	else	1002	else
705	default_loop = 0;	1003	ev_default_loop_ptr = 0;
706	}	1004	}
707		1005
708	return default_loop;	1006	return ev_default_loop_ptr;
709	}	1007	}
710		1008
711	void	1009	void
712	ev_default_destroy (void)	1010	ev_default_destroy (void)
713	{	1011	{
714	#if EV_MULTIPLICITY	1012	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	1013	struct ev_loop *loop = ev_default_loop_ptr;
716	#endif	1014	#endif
717		1015
		1016	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	1017	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	1018	ev_signal_stop (EV_A_ &childev);
		1019	#endif
720		1020
721	ev_ref (EV_A); /* signal watcher */	1021	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	1022	ev_io_stop (EV_A_ &sigev);
723		1023
724	close (sigpipe [0]); sigpipe [0] = 0;	1024	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		1026
727	loop_destroy (EV_A);	1027	loop_destroy (EV_A);
728	}	1028	}
729		1029
730	void	1030	void
731	ev_default_fork (EV_P)	1031	ev_default_fork (void)
732	{	1032	{
733	loop_fork (EV_A);	1033	#if EV_MULTIPLICITY
		1034	struct ev_loop *loop = ev_default_loop_ptr;
		1035	#endif
734		1036
735	ev_io_stop (EV_A_ &sigev);	1037	if (backend)
736	close (sigpipe [0]);	1038	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	1039	}
743		1040
744	/*****************************************************************************/	1041	/*****************************************************************************/
745		1042
746	static void	1043	static int
		1044	any_pending (EV_P)
		1045	{
		1046	int pri;
		1047
		1048	for (pri = NUMPRI; pri--; )
		1049	if (pendingcnt [pri])
		1050	return 1;
		1051
		1052	return 0;
		1053	}
		1054
		1055	inline void
747	call_pending (EV_P)	1056	call_pending (EV_P)
748	{	1057	{
749	int pri;	1058	int pri;
750		1059
751	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
752	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
753	{	1062	{
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		1064
756	if (p->w)	1065	if (expect_true (p->w))
757	{	1066	{
758	p->w->pending = 0;	1067	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
760	}	1069	}
761	}	1070	}
762	}	1071	}
763		1072
764	static void	1073	inline void
765	timers_reify (EV_P)	1074	timers_reify (EV_P)
766	{	1075	{
767	while (timercnt && timers [0]->at <= mn_now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1077	{
769	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
		1079
		1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));
770		1081
771	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
772	if (w->repeat)	1083	if (w->repeat)
773	{	1084	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
775	w->at = mn_now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
776	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
777	}	1092	}
778	else	1093	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1095
781	event (EV_A_ (W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1097	}
783	}	1098	}
784		1099
785	static void	1100	#if EV_PERIODICS
		1101	inline void
786	periodics_reify (EV_P)	1102	periodics_reify (EV_P)
787	{	1103	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1105	{
790	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
791		1107
		1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1109
792	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
793	if (w->interval)	1111	if (w->reschedule_cb)
794	{	1112	{
		1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1115	downheap ((WT *)periodics, periodiccnt, 0);
		1116	}
		1117	else if (w->interval)
		1118	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1122	}
799	else	1123	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1125
802	event (EV_A_ (W)w, EV_PERIODIC);	1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1127	}
804	}	1128	}
805		1129
806	static void	1130	static void
807	periodics_reschedule (EV_P)	1131	periodics_reschedule (EV_P)
…		…
811	/* adjust periodics after time jump */	1135	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
813	{	1137	{
814	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
815		1139
		1140	if (w->reschedule_cb)
		1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1142	else if (w->interval)
817	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1144	}
		1145
		1146	/* now rebuild the heap */
		1147	for (i = periodiccnt >> 1; i--; )
		1148	downheap ((WT *)periodics, periodiccnt, i);
829	}	1149	}
		1150	#endif
830		1151
831	inline int	1152	inline int
832	time_update_monotonic (EV_P)	1153	time_update_monotonic (EV_P)
833	{	1154	{
834	mn_now = get_clock ();	1155	mn_now = get_clock ();
835		1156
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1158	{
838	rt_now = rtmn_diff + mn_now;	1159	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1160	return 0;
840	}	1161	}
841	else	1162	else
842	{	1163	{
843	now_floor = mn_now;	1164	now_floor = mn_now;
844	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
845	return 1;	1166	return 1;
846	}	1167	}
847	}	1168	}
848		1169
849	static void	1170	inline void
850	time_update (EV_P)	1171	time_update (EV_P)
851	{	1172	{
852	int i;	1173	int i;
853		1174
854	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
…		…
858	{	1179	{
859	ev_tstamp odiff = rtmn_diff;	1180	ev_tstamp odiff = rtmn_diff;
860		1181
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
862	{	1183	{
863	rtmn_diff = rt_now - mn_now;	1184	rtmn_diff = ev_rt_now - mn_now;
864		1185
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1187	return; /* all is well */
867		1188
868	rt_now = ev_time ();	1189	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1190	mn_now = get_clock ();
870	now_floor = mn_now;	1191	now_floor = mn_now;
871	}	1192	}
872		1193
		1194	# if EV_PERIODICS
873	periodics_reschedule (EV_A);	1195	periodics_reschedule (EV_A);
		1196	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1197	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1199	}
877	}	1200	}
878	else	1201	else
879	#endif	1202	#endif
880	{	1203	{
881	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
882		1205
883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1207	{
		1208	#if EV_PERIODICS
885	periodics_reschedule (EV_A);	1209	periodics_reschedule (EV_A);
		1210	#endif
886		1211
887	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
888	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1215	}
891		1216
892	mn_now = rt_now;	1217	mn_now = ev_rt_now;
893	}	1218	}
894	}	1219	}
895		1220
896	void	1221	void
897	ev_ref (EV_P)	1222	ev_ref (EV_P)
…		…
911	ev_loop (EV_P_ int flags)	1236	ev_loop (EV_P_ int flags)
912	{	1237	{
913	double block;	1238	double block;
914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
915		1240
916	do	1241	while (activecnt)
917	{	1242	{
918	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
919	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
920	{	1245	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1247	call_pending (EV_A);
923	}	1248	}
924		1249
		1250	/* we might have forked, so reify kernel state if necessary */
		1251	if (expect_false (postfork))
		1252	loop_fork (EV_A);
		1253
925	/* update fd-related kernel structures */	1254	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1255	fd_reify (EV_A);
927		1256
928	/* calculate blocking time */	1257	/* calculate blocking time */
929		1258
930	/* we only need this for !monotonic clockor timers, but as we basically	1259	/* we only need this for !monotonic clock or timers, but as we basically
931	always have timers, we just calculate it always */	1260	always have timers, we just calculate it always */
932	#if EV_USE_MONOTONIC	1261	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1262	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1263	time_update_monotonic (EV_A);
935	else	1264	else
936	#endif	1265	#endif
937	{	1266	{
938	rt_now = ev_time ();	1267	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1268	mn_now = ev_rt_now;
940	}	1269	}
941		1270
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;	1272	block = 0.;
944	else	1273	else
945	{	1274	{
946	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
947		1276
948	if (timercnt)	1277	if (timercnt)
949	{	1278	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951	if (block > to) block = to;	1280	if (block > to) block = to;
952	}	1281	}
953		1282
		1283	#if EV_PERIODICS
954	if (periodiccnt)	1284	if (periodiccnt)
955	{	1285	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957	if (block > to) block = to;	1287	if (block > to) block = to;
958	}	1288	}
		1289	#endif
959		1290
960	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
961	}	1292	}
962		1293
963	method_poll (EV_A_ block);	1294	backend_poll (EV_A_ block);
964		1295
965	/* update rt_now, do magic */	1296	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1297	time_update (EV_A);
967		1298
968	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
970	periodics_reify (EV_A); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
971		1304
972	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
973	if (!pendingcnt)	1306	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1308
976	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
977	if (checkcnt)	1310	if (expect_false (checkcnt))
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1312
980	call_pending (EV_A);	1313	call_pending (EV_A);
		1314
		1315	if (expect_false (loop_done))
		1316	break;
981	}	1317	}
982	while (activecnt && !loop_done);
983		1318
984	if (loop_done != 2)	1319	if (loop_done != 2)
985	loop_done = 0;	1320	loop_done = 0;
986	}	1321	}
987		1322
…		…
1047	void	1382	void
1048	ev_io_start (EV_P_ struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
1049	{	1384	{
1050	int fd = w->fd;	1385	int fd = w->fd;
1051		1386
1052	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
1053	return;	1388	return;
1054		1389
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1391
1057	ev_start (EV_A_ (W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1393	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1395
1061	fd_change (EV_A_ fd);	1396	fd_change (EV_A_ fd);
1062	}	1397	}
1063		1398
1064	void	1399	void
1065	ev_io_stop (EV_P_ struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
1066	{	1401	{
1067	ev_clear_pending (EV_A_ (W)w);	1402	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
1069	return;	1404	return;
		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1070		1407
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1409	ev_stop (EV_A_ (W)w);
1073		1410
1074	fd_change (EV_A_ w->fd);	1411	fd_change (EV_A_ w->fd);
1075	}	1412	}
1076		1413
1077	void	1414	void
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
1079	{	1416	{
1080	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
1081	return;	1418	return;
1082		1419
1083	w->at += mn_now;	1420	((WT)w)->at += mn_now;
1084		1421
1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086		1423
1087	ev_start (EV_A_ (W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
		1428
		1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1091	}	1430	}
1092		1431
1093	void	1432	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
1095	{	1434	{
1096	ev_clear_pending (EV_A_ (W)w);	1435	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
1098	return;	1437	return;
1099		1438
		1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1440
1100	if (w->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
1101	{	1442	{
1102	timers [w->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1445	}
1105		1446
1106	w->at = w->repeat;	1447	((WT)w)->at -= mn_now;
1107		1448
1108	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1109	}	1450	}
1110		1451
1111	void	1452	void
…		…
1113	{	1454	{
1114	if (ev_is_active (w))	1455	if (ev_is_active (w))
1115	{	1456	{
1116	if (w->repeat)	1457	if (w->repeat)
1117	{	1458	{
1118	w->at = mn_now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1461	}
1121	else	1462	else
1122	ev_timer_stop (EV_A_ w);	1463	ev_timer_stop (EV_A_ w);
1123	}	1464	}
1124	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1468	ev_timer_start (EV_A_ w);
		1469	}
1126	}	1470	}
1127		1471
		1472	#if EV_PERIODICS
1128	void	1473	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1130	{	1475	{
1131	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1132	return;	1477	return;
1133		1478
		1479	if (w->reschedule_cb)
		1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1481	else if (w->interval)
		1482	{
1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* this formula differs from the one in periodic_reify because we do not always round up */
1137	if (w->interval)
1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1486	}
1139		1487
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
		1492
		1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1144	}	1494	}
1145		1495
1146	void	1496	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1148	{	1498	{
1149	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1151	return;	1501	return;
1152		1502
		1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1504
1153	if (w->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1154	{	1506	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1509	}
1158		1510
1159	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1160	}	1512	}
1161		1513
1162	void	1514	void
		1515	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1516	{
		1517	/* TODO: use adjustheap and recalculation */
		1518	ev_periodic_stop (EV_A_ w);
		1519	ev_periodic_start (EV_A_ w);
		1520	}
		1521	#endif
		1522
		1523	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1524	ev_idle_start (EV_P_ struct ev_idle *w)
1164	{	1525	{
1165	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1166	return;	1527	return;
1167		1528
1168	ev_start (EV_A_ (W)w, ++idlecnt);	1529	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );	1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1170	idles [idlecnt - 1] = w;	1531	idles [idlecnt - 1] = w;
1171	}	1532	}
1172		1533
1173	void	1534	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)	1535	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{	1536	{
1176	ev_clear_pending (EV_A_ (W)w);	1537	ev_clear_pending (EV_A_ (W)w);
1177	if (ev_is_active (w))	1538	if (expect_false (!ev_is_active (w)))
1178	return;	1539	return;
1179		1540
1180	idles [w->active - 1] = idles [--idlecnt];	1541	idles [((W)w)->active - 1] = idles [--idlecnt];
1181	ev_stop (EV_A_ (W)w);	1542	ev_stop (EV_A_ (W)w);
1182	}	1543	}
1183		1544
1184	void	1545	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)	1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
1186	{	1547	{
1187	if (ev_is_active (w))	1548	if (expect_false (ev_is_active (w)))
1188	return;	1549	return;
1189		1550
1190	ev_start (EV_A_ (W)w, ++preparecnt);	1551	ev_start (EV_A_ (W)w, ++preparecnt);
1191	array_needsize (prepares, preparemax, preparecnt, );	1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1192	prepares [preparecnt - 1] = w;	1553	prepares [preparecnt - 1] = w;
1193	}	1554	}
1194		1555
1195	void	1556	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197	{	1558	{
1198	ev_clear_pending (EV_A_ (W)w);	1559	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))	1560	if (expect_false (!ev_is_active (w)))
1200	return;	1561	return;
1201		1562
1202	prepares [w->active - 1] = prepares [--preparecnt];	1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1204	}	1565	}
1205		1566
1206	void	1567	void
1207	ev_check_start (EV_P_ struct ev_check *w)	1568	ev_check_start (EV_P_ struct ev_check *w)
1208	{	1569	{
1209	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
1210	return;	1571	return;
1211		1572
1212	ev_start (EV_A_ (W)w, ++checkcnt);	1573	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );	1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1214	checks [checkcnt - 1] = w;	1575	checks [checkcnt - 1] = w;
1215	}	1576	}
1216		1577
1217	void	1578	void
1218	ev_check_stop (EV_P_ struct ev_check *w)	1579	ev_check_stop (EV_P_ struct ev_check *w)
1219	{	1580	{
1220	ev_clear_pending (EV_A_ (W)w);	1581	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))	1582	if (expect_false (!ev_is_active (w)))
1222	return;	1583	return;
1223		1584
1224	checks [w->active - 1] = checks [--checkcnt];	1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);	1586	ev_stop (EV_A_ (W)w);
1226	}	1587	}
1227		1588
1228	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1590	# define SA_RESTART 0
…		…
1231		1592
1232	void	1593	void
1233	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1234	{	1595	{
1235	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1237	#endif	1598	#endif
1238	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1239	return;	1600	return;
1240		1601
1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242		1603
1243	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1607
1247	if (!w->next)	1608	if (!((WL)w)->next)
1248	{	1609	{
		1610	#if _WIN32
		1611	signal (w->signum, sighandler);
		1612	#else
1249	struct sigaction sa;	1613	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1616	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1617	sigaction (w->signum, &sa, 0);
		1618	#endif
1254	}	1619	}
1255	}	1620	}
1256		1621
1257	void	1622	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1259	{	1624	{
1260	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1262	return;	1627	return;
1263		1628
1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1265	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1266		1631
…		…
1270		1635
1271	void	1636	void
1272	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1273	{	1638	{
1274	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1275	assert (("child watchers are only supported in the default loop", loop == default_loop));	1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1276	#endif	1641	#endif
1277	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1278	return;	1643	return;
1279		1644
1280	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1282	}	1647	}
1283		1648
1284	void	1649	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1286	{	1651	{
1287	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1289	return;	1654	return;
1290		1655
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1293	}	1658	}
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1673	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1674	void *arg = once->arg;
1310		1675
1311	ev_io_stop (EV_A_ &once->io);	1676	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1677	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1678	ev_free (once);
1314		1679
1315	cb (revents, arg);	1680	cb (revents, arg);
1316	}	1681	}
1317		1682
1318	static void	1683	static void
…		…
1328	}	1693	}
1329		1694
1330	void	1695	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1332	{	1697	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1699
1335	if (!once)	1700	if (expect_false (!once))
		1701	{
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1703	return;
1338	{	1704	}
		1705
1339	once->cb = cb;	1706	once->cb = cb;
1340	once->arg = arg;	1707	once->arg = arg;
1341		1708
1342	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1710	if (fd >= 0)
1344	{	1711	{
1345	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1713	ev_io_start (EV_A_ &once->io);
1347	}	1714	}
1348		1715
1349	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1717	if (timeout >= 0.)
1351	{	1718	{
1352	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1720	ev_timer_start (EV_A_ &once->to);
1354	}
1355	}	1721	}
1356	}	1722	}
1357		1723
		1724	#ifdef __cplusplus
		1725	}
		1726	#endif
		1727

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Comparing libev/ev.c (file contents): Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs. Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC