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

Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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 <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.h>	118	# include <sys/wait.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_USE_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
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))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
117		210
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
120	/*****************************************************************************/	217	/*****************************************************************************/
121		218
		219	static void (syserr_cb)(const char msg);
		220
		221	void ev_set_syserr_cb (void (cb)(const char msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void (alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void (cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
122	typedef struct	267	typedef struct
123	{	268	{
124	struct ev_watcher_list *head;	269	WL head;
125	unsigned char events;	270	unsigned char events;
126	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
127	} ANFD;	275	} ANFD;
128		276
129	typedef struct	277	typedef struct
130	{	278	{
131	W w;	279	W w;
132	int events;	280	int events;
133	} ANPENDING;	281	} ANPENDING;
134		282
135	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
136		284
137	struct ev_loop	285	struct ev_loop
138	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	290	#include "ev_vars.h"
141	};
142	# undef VAR	291	#undef VAR
		292	};
143	# include "ev_wrap.h"	293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
144		297
145	#else	298	#else
146		299
		300	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	302	#include "ev_vars.h"
149	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
150		306
151	#endif	307	#endif
152		308
153	/*****************************************************************************/	309	/*****************************************************************************/
154		310
155	inline ev_tstamp	311	ev_tstamp
156	ev_time (void)	312	ev_time (void)
157	{	313	{
158	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
159	struct timespec ts;	315	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	335	#endif
180		336
181	return ev_time ();	337	return ev_time ();
182	}	338	}
183		339
		340	#if EV_MULTIPLICITY
184	ev_tstamp	341	ev_tstamp
185	ev_now (EV_P)	342	ev_now (EV_P)
186	{	343	{
187	return rt_now;	344	return ev_rt_now;
188	}	345	}
		346	#endif
189		347
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
191		349
192	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
194	{ \	352	{ \
195	int newcnt = cur; \	353	int newcnt = cur; \
196	do \	354	do \
197	{ \	355	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	357	} \
200	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
201	\	359	\
202	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	362	cur = newcnt; \
205	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		375
207	/*****************************************************************************/	376	/*****************************************************************************/
208		377
209	static void	378	static void
210	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
217		386
218	++base;	387	++base;
219	}	388	}
220	}	389	}
221		390
222	static void	391	void
223	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
224	{	393	{
225	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
226	{	397	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	399	return;
229	}	400	}
230		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
231	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	409	}
236		410
237	static void	411	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	413	{
240	int i;	414	int i;
241		415
242	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
244	}	418	}
245		419
246	static void	420	inline void
247	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
248	{	422	{
249	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	424	struct ev_io *w;
251		425
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	426	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	427	{
254	int ev = w->events & events;	428	int ev = w->events & revents;
255		429
256	if (ev)	430	if (ev)
257	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
258	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
259	}	439	}
260		440
261	/*****************************************************************************/	441	/*****************************************************************************/
262		442
263	static void	443	inline void
264	fd_reify (EV_P)	444	fd_reify (EV_P)
265	{	445	{
266	int i;	446	int i;
267		447
268	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
274	int events = 0;	454	int events = 0;
275		455
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	457	events \|= w->events;
278		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
279	anfd->reify = 0;	468	anfd->reify = 0;
280		469
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	471	anfd->events = events;
285	}
286	}	472	}
287		473
288	fdchangecnt = 0;	474	fdchangecnt = 0;
289	}	475	}
290		476
291	static void	477	static void
292	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
293	{	479	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
295	return;	481	return;
296		482
297	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
298		484
299	++fdchangecnt;	485	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
302	}	488	}
303		489
304	static void	490	static void
305	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	493	struct ev_io *w;
308		494
309	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
310	{	496	{
311	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	499	}
		500	}
		501
		502	inline int
		503	fd_valid (int fd)
		504	{
		505	#ifdef _WIN32
		506	return _get_osfhandle (fd) != -1;
		507	#else
		508	return fcntl (fd, F_GETFD) != -1;
		509	#endif
314	}	510	}
315		511
316	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
317	static void	513	static void
318	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
319	{	515	{
320	int fd;	516	int fd;
321		517
322	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	519	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
326	}	522	}
327		523
328	/* called on ENOMEM in select/poll to kill some fds and retry */	524	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	525	static void
330	fd_enomem (EV_P)	526	fd_enomem (EV_P)
331	{	527	{
332	int fd = anfdmax;	528	int fd;
333		529
334	while (fd--)	530	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	531	if (anfds [fd].events)
336	{	532	{
337	close (fd);
338	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
339	return;	534	return;
340	}	535	}
341	}	536	}
342		537
343	/* susually called after fork if method needs to re-arm all fds from scratch */	538	/* usually called after fork if backend needs to re-arm all fds from scratch */
344	static void	539	static void
345	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
346	{	541	{
347	int fd;	542	int fd;
348		543
349	/* this should be highly optimised to not do anything but set a flag */	544	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	545	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	546	if (anfds [fd].events)
352	{	547	{
353	anfds [fd].events = 0;	548	anfds [fd].events = 0;
354	fd_change (fd);	549	fd_change (EV_A_ fd);
355	}	550	}
356	}	551	}
357		552
358	/*****************************************************************************/	553	/*****************************************************************************/
359		554
…		…
363	WT w = heap [k];	558	WT w = heap [k];
364		559
365	while (k && heap [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
366	{	561	{
367	heap [k] = heap [k >> 1];	562	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
369	k >>= 1;	564	k >>= 1;
370	}	565	}
371		566
372	heap [k] = w;	567	heap [k] = w;
373	heap [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
374		569
375	}	570	}
376		571
377	static void	572	static void
378	downheap (WT *heap, int N, int k)	573	downheap (WT *heap, int N, int k)
…		…
388		583
389	if (w->at <= heap [j]->at)	584	if (w->at <= heap [j]->at)
390	break;	585	break;
391		586
392	heap [k] = heap [j];	587	heap [k] = heap [j];
393	heap [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
394	k = j;	589	k = j;
395	}	590	}
396		591
397	heap [k] = w;	592	heap [k] = w;
398	heap [k]->active = k + 1;	593	((W)heap [k])->active = k + 1;
		594	}
		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
399	}	601	}
400		602
401	/*****************************************************************************/	603	/*****************************************************************************/
402		604
403	typedef struct	605	typedef struct
404	{	606	{
405	struct ev_watcher_list *head;	607	WL head;
406	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
407	} ANSIG;	609	} ANSIG;
408		610
409	static ANSIG *signals;	611	static ANSIG *signals;
410	static int signalmax;	612	static int signalmax;
…		…
426	}	628	}
427		629
428	static void	630	static void
429	sighandler (int signum)	631	sighandler (int signum)
430	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
431	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
432		638
433	if (!gotsig)	639	if (!gotsig)
434	{	640	{
435	int old_errno = errno;	641	int old_errno = errno;
…		…
437	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
438	errno = old_errno;	644	errno = old_errno;
439	}	645	}
440	}	646	}
441		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 \|\| signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
442	static void	668	static void
443	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
444	{	670	{
445	struct ev_watcher_list *w;
446	int signum;	671	int signum;
447		672
448	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
449	gotsig = 0;	674	gotsig = 0;
450		675
451	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
452	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
453	{	678	ev_feed_signal_event (EV_A_ signum + 1);
454	signals [signum].gotsig = 0;	679	}
455		680
456	for (w = signals [signum].head; w; w = w->next)	681	static void
457	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
458	}	683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
		688	fcntl (fd, F_SETFD, FD_CLOEXEC);
		689	fcntl (fd, F_SETFL, O_NONBLOCK);
		690	#endif
459	}	691	}
460		692
461	static void	693	static void
462	siginit (EV_P)	694	siginit (EV_P)
463	{	695	{
464	#ifndef WIN32	696	fd_intern (sigpipe [0]);
465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
467
468	/* rather than sort out wether we really need nb, set it */
469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
471	#endif
472		698
473	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
474	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
475	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
476	}	702	}
477		703
478	/*****************************************************************************/	704	/*****************************************************************************/
479		705
480	#ifndef WIN32
481
482	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
483	static struct ev_signal childev;	710	static struct ev_signal childev;
484		711
485	#ifndef WCONTINUED	712	#ifndef WCONTINUED
486	# define WCONTINUED 0	713	# define WCONTINUED 0
487	#endif	714	#endif
…		…
492	struct ev_child *w;	719	struct ev_child *w;
493		720
494	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	721	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
495	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
496	{	723	{
497	w->priority = sw->priority; /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
498	w->rpid = pid;	725	w->rpid = pid;
499	w->rstatus = status;	726	w->rstatus = status;
500	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
501	}	728	}
502	}	729	}
503		730
504	static void	731	static void
505	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
507	int pid, status;	734	int pid, status;
508		735
509	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
510	{	737	{
511	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
512	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
513		741
514	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
516	}	744	}
517	}	745	}
518		746
519	#endif	747	#endif
520		748
521	/*****************************************************************************/	749	/*****************************************************************************/
522		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
523	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
524	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
525	#endif	756	#endif
526	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
527	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
547		778
548	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
549	static int	780	static int
550	enable_secure (void)	781	enable_secure (void)
551	{	782	{
552	#ifdef WIN32	783	#ifdef _WIN32
553	return 0;	784	return 0;
554	#else	785	#else
555	return getuid () != geteuid ()	786	return getuid () != geteuid ()
556	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
557	#endif	788	#endif
558	}	789	}
559		790
560	int	791	unsigned int
561	ev_method (EV_P)	792	ev_supported_backends (void)
562	{	793	{
563	return method;	794	unsigned int flags = 0;
564	}
565		795
566	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
567	loop_init (EV_P_ int methods)	797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
568	{	807	{
569	if (!method)	808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
570	{	841	{
571	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
572	{	843	{
573	struct timespec ts;	844	struct timespec ts;
574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
575	have_monotonic = 1;	846	have_monotonic = 1;
576	}	847	}
577	#endif	848	#endif
578		849
579	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
580	mn_now = get_clock ();	851	mn_now = get_clock ();
581	now_floor = mn_now;	852	now_floor = mn_now;
582	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
583		854
584	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
585	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
586	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
587	else
588	methods = EVMETHOD_ANY;
589		859
590	method = 0;	860	if (!(flags & 0x0000ffffUL))
		861	flags \|= ev_recommended_backends ();
		862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		866	#endif
591	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
593	#endif	869	#endif
594	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
596	#endif	872	#endif
597	#if EV_USE_POLL	873	#if EV_USE_POLL
598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
599	#endif	875	#endif
600	#if EV_USE_SELECT	876	#if EV_USE_SELECT
601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
602	#endif	878	#endif
603	}
604	}
605		879
606	void	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
607	loop_destroy (EV_P)	886	loop_destroy (EV_P)
608	{	887	{
		888	int i;
		889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		892	#endif
609	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
610	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
611	#endif	895	#endif
612	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
613	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
614	#endif	898	#endif
615	#if EV_USE_POLL	899	#if EV_USE_POLL
616	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
617	#endif	901	#endif
618	#if EV_USE_SELECT	902	#if EV_USE_SELECT
619	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
620	#endif	904	#endif
621		905
622	method = 0;	906	for (i = NUMPRI; i--; )
623	/TODO/	907	array_free (pending, [i]);
624	}
625		908
626	void	909	/* have to use the microsoft-never-gets-it-right macro */
		910	array_free (fdchange, EMPTY0);
		911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
		913	array_free (periodic, EMPTY0);
		914	#endif
		915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
		918
		919	backend = 0;
		920	}
		921
		922	static void
627	loop_fork (EV_P)	923	loop_fork (EV_P)
628	{	924	{
629	/TODO/	925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
630	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
631	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
632	#endif	933	#endif
633	#if EV_USE_KQUEUE	934
634	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	935	if (ev_is_active (&sigev))
635	#endif	936	{
		937	/* default loop */
		938
		939	ev_ref (EV_A);
		940	ev_io_stop (EV_A_ &sigev);
		941	close (sigpipe [0]);
		942	close (sigpipe [1]);
		943
		944	while (pipe (sigpipe))
		945	syserr ("(libev) error creating pipe");
		946
		947	siginit (EV_A);
		948	}
		949
		950	postfork = 0;
636	}	951	}
637		952
638	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
639	struct ev_loop *	954	struct ev_loop *
640	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
641	{	956	{
642	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
643		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
644	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
645		962
646	if (ev_methods (EV_A))	963	if (ev_backend (EV_A))
647	return loop;	964	return loop;
648		965
649	return 0;	966	return 0;
650	}	967	}
651		968
652	void	969	void
653	ev_loop_destroy (EV_P)	970	ev_loop_destroy (EV_P)
654	{	971	{
655	loop_destroy (EV_A);	972	loop_destroy (EV_A);
656	free (loop);	973	ev_free (loop);
657	}	974	}
658		975
659	void	976	void
660	ev_loop_fork (EV_P)	977	ev_loop_fork (EV_P)
661	{	978	{
662	loop_fork (EV_A);	979	postfork = 1;
663	}	980	}
664		981
665	#endif	982	#endif
666		983
667	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
668	struct ev_loop default_loop_struct;
669	static struct ev_loop *default_loop;
670
671	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
672	#else	987	#else
673	static int default_loop;
674
675	int	988	int
		989	ev_default_loop (unsigned int flags)
676	#endif	990	#endif
677	ev_default_loop (int methods)
678	{	991	{
679	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
680	if (pipe (sigpipe))	993	if (pipe (sigpipe))
681	return 0;	994	return 0;
682		995
683	if (!default_loop)	996	if (!ev_default_loop_ptr)
684	{	997	{
685	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
686	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
687	#else	1000	#else
688	default_loop = 1;	1001	ev_default_loop_ptr = 1;
689	#endif	1002	#endif
690		1003
691	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
692		1005
693	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
694	{	1007	{
695	ev_watcher_init (&sigev, sigcb);
696	ev_set_priority (&sigev, EV_MAXPRI);
697	siginit (EV_A);	1008	siginit (EV_A);
698		1009
699	#ifndef WIN32	1010	#ifndef _WIN32
700	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
701	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
702	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
703	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
704	#endif	1015	#endif
705	}	1016	}
706	else	1017	else
707	default_loop = 0;	1018	ev_default_loop_ptr = 0;
708	}	1019	}
709		1020
710	return default_loop;	1021	return ev_default_loop_ptr;
711	}	1022	}
712		1023
713	void	1024	void
714	ev_default_destroy (void)	1025	ev_default_destroy (void)
715	{	1026	{
716	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
717	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
718	#endif	1029	#endif
719		1030
		1031	#ifndef _WIN32
720	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
721	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
722		1035
723	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
724	ev_io_stop (EV_A_ &sigev);	1037	ev_io_stop (EV_A_ &sigev);
725		1038
726	close (sigpipe [0]); sigpipe [0] = 0;	1039	close (sigpipe [0]); sigpipe [0] = 0;
…		…
728		1041
729	loop_destroy (EV_A);	1042	loop_destroy (EV_A);
730	}	1043	}
731		1044
732	void	1045	void
733	ev_default_fork (EV_P)	1046	ev_default_fork (void)
734	{	1047	{
735	loop_fork (EV_A);	1048	#if EV_MULTIPLICITY
		1049	struct ev_loop *loop = ev_default_loop_ptr;
		1050	#endif
736		1051
737	ev_io_stop (EV_A_ &sigev);	1052	if (backend)
738	close (sigpipe [0]);	1053	postfork = 1;
739	close (sigpipe [1]);
740	pipe (sigpipe);
741
742	ev_ref (EV_A); /* signal watcher */
743	siginit (EV_A);
744	}	1054	}
745		1055
746	/*****************************************************************************/	1056	/*****************************************************************************/
747		1057
748	static void	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
749	call_pending (EV_P)	1071	call_pending (EV_P)
750	{	1072	{
751	int pri;	1073	int pri;
752		1074
753	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
754	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
755	{	1077	{
756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
757		1079
758	if (p->w)	1080	if (expect_true (p->w))
759	{	1081	{
760	p->w->pending = 0;	1082	p->w->pending = 0;
761	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
762	}	1084	}
763	}	1085	}
764	}	1086	}
765		1087
766	static void	1088	inline void
767	timers_reify (EV_P)	1089	timers_reify (EV_P)
768	{	1090	{
769	while (timercnt && timers [0]->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
770	{	1092	{
771	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
		1094
		1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));
772		1096
773	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
774	if (w->repeat)	1098	if (w->repeat)
775	{	1099	{
776	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
777	w->at = mn_now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
778	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
779	}	1107	}
780	else	1108	else
781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
782		1110
783	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
784	}	1112	}
785	}	1113	}
786		1114
787	static void	1115	#if EV_PERIODICS
		1116	inline void
788	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
789	{	1118	{
790	while (periodiccnt && periodics [0]->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
791	{	1120	{
792	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
793		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
794	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
795	if (w->interval)	1126	if (w->reschedule_cb)
796	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
797	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
798	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
799	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
800	}	1137	}
801	else	1138	else
802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
803		1140
804	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
805	}	1142	}
806	}	1143	}
807		1144
808	static void	1145	static void
809	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
813	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
814	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
815	{	1152	{
816	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
817		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
818	if (w->interval)	1157	else if (w->interval)
819	{
820	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
821
822	if (fabs (diff) >= 1e-4)
823	{
824	ev_periodic_stop (EV_A_ w);
825	ev_periodic_start (EV_A_ w);
826
827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
828	}
829	}
830	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
831	}	1164	}
		1165	#endif
832		1166
833	inline int	1167	inline int
834	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
835	{	1169	{
836	mn_now = get_clock ();	1170	mn_now = get_clock ();
837		1171
838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
839	{	1173	{
840	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
841	return 0;	1175	return 0;
842	}	1176	}
843	else	1177	else
844	{	1178	{
845	now_floor = mn_now;	1179	now_floor = mn_now;
846	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
847	return 1;	1181	return 1;
848	}	1182	}
849	}	1183	}
850		1184
851	static void	1185	inline void
852	time_update (EV_P)	1186	time_update (EV_P)
853	{	1187	{
854	int i;	1188	int i;
855		1189
856	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
860	{	1194	{
861	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
862		1196
863	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
864	{	1198	{
865	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
866		1200
867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
868	return; /* all is well */	1202	return; /* all is well */
869		1203
870	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1205	mn_now = get_clock ();
872	now_floor = mn_now;	1206	now_floor = mn_now;
873	}	1207	}
874		1208
		1209	# if EV_PERIODICS
875	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
876	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
878	}	1214	}
879	}	1215	}
880	else	1216	else
881	#endif	1217	#endif
882	{	1218	{
883	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
884		1220
885	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
886	{	1222	{
		1223	#if EV_PERIODICS
887	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
888		1226
889	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
890	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
891	timers [i]->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
892	}	1230	}
893		1231
894	mn_now = rt_now;	1232	mn_now = ev_rt_now;
895	}	1233	}
896	}	1234	}
897		1235
898	void	1236	void
899	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
910	static int loop_done;	1248	static int loop_done;
911		1249
912	void	1250	void
913	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
914	{	1252	{
915	double block;
916	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
917		1256
918	do	1257	while (activecnt)
919	{	1258	{
920	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
921	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
922	{	1261	{
923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
924	call_pending (EV_A);	1263	call_pending (EV_A);
925	}	1264	}
926		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
927	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
928	fd_reify (EV_A);	1271	fd_reify (EV_A);
929		1272
930	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
931		1276
932	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
933	always have timers, we just calculate it always */	1278	block = 0.; /* do not block at all */
		1279	else
		1280	{
		1281	/* update time to cancel out callback processing overhead */
934	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
935	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
936	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
937	else	1285	else
938	#endif	1286	#endif
939	{	1287	{
940	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
941	mn_now = rt_now;	1289	mn_now = ev_rt_now;
942	}	1290	}
943		1291
944	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
945	block = 0.;
946	else
947	{
948	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
949		1293
950	if (timercnt)	1294	if (timercnt)
951	{	1295	{
952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
953	if (block > to) block = to;	1297	if (block > to) block = to;
954	}	1298	}
955		1299
		1300	#if EV_PERIODICS
956	if (periodiccnt)	1301	if (periodiccnt)
957	{	1302	{
958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
959	if (block > to) block = to;	1304	if (block > to) block = to;
960	}	1305	}
		1306	#endif
961		1307
962	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
963	}	1309	}
964		1310
965	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
966		1313
967	/* update rt_now, do magic */	1314	/* update ev_rt_now, do magic */
968	time_update (EV_A);	1315	time_update (EV_A);
969		1316
970	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
971	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
972	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
973		1322
974	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
975	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
977		1326
978	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
979	if (checkcnt)	1328	if (expect_false (checkcnt))
980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
981		1330
982	call_pending (EV_A);	1331	call_pending (EV_A);
983	}
984	while (activecnt && !loop_done);
985		1332
986	if (loop_done != 2)	1333	if (expect_false (loop_done))
987	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
988	}	1339	}
989		1340
990	void	1341	void
991	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
992	{	1343	{
…		…
1049	void	1400	void
1050	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
1051	{	1402	{
1052	int fd = w->fd;	1403	int fd = w->fd;
1053		1404
1054	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
1055	return;	1406	return;
1056		1407
1057	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
1058		1409
1059	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1062		1413
1063	fd_change (EV_A_ fd);	1414	fd_change (EV_A_ fd);
1064	}	1415	}
1065		1416
1066	void	1417	void
1067	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
1068	{	1419	{
1069	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1070	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
1071	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1072		1425
1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1074	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
1075		1428
1076	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
1077	}	1430	}
1078		1431
1079	void	1432	void
1080	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1081	{	1434	{
1082	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1083	return;	1436	return;
1084		1437
1085	w->at += mn_now;	1438	((WT)w)->at += mn_now;
1086		1439
1087	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1088		1441
1089	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1090	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1091	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1092	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1093	}	1448	}
1094		1449
1095	void	1450	void
1096	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1097	{	1452	{
1098	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1099	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1100	return;	1455	return;
1101		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
1102	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1103	{	1460	{
1104	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1105	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1106	}	1463	}
1107		1464
1108	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1109		1466
1110	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1111	}	1468	}
1112		1469
1113	void	1470	void
…		…
1115	{	1472	{
1116	if (ev_is_active (w))	1473	if (ev_is_active (w))
1117	{	1474	{
1118	if (w->repeat)	1475	if (w->repeat)
1119	{	1476	{
1120	w->at = mn_now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
1121	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1122	}	1479	}
1123	else	1480	else
1124	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1125	}	1482	}
1126	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1127	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1128	}	1488	}
1129		1489
		1490	#if EV_PERIODICS
1130	void	1491	void
1131	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1132	{	1493	{
1133	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1134	return;	1495	return;
1135		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1136	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1137
1138	/* this formula differs from the one in periodic_reify because we do not always round up */	1502	/* this formula differs from the one in periodic_reify because we do not always round up */
1139	if (w->interval)
1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1504	}
1141		1505
1142	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1143	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1144	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1145	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1146	}	1512	}
1147		1513
1148	void	1514	void
1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1150	{	1516	{
1151	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1152	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1153	return;	1519	return;
1154		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
1155	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1156	{	1524	{
1157	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1159	}	1527	}
1160		1528
1161	ev_stop (EV_A_ (W)w);	1529	ev_stop (EV_A_ (W)w);
1162	}	1530	}
1163		1531
1164	void	1532	void
		1533	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1534	{
		1535	/* TODO: use adjustheap and recalculation */
		1536	ev_periodic_stop (EV_A_ w);
		1537	ev_periodic_start (EV_A_ w);
		1538	}
		1539	#endif
		1540
		1541	void
1165	ev_idle_start (EV_P_ struct ev_idle *w)	1542	ev_idle_start (EV_P_ struct ev_idle *w)
1166	{	1543	{
1167	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1168	return;	1545	return;
1169		1546
1170	ev_start (EV_A_ (W)w, ++idlecnt);	1547	ev_start (EV_A_ (W)w, ++idlecnt);
1171	array_needsize (idles, idlemax, idlecnt, );	1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1172	idles [idlecnt - 1] = w;	1549	idles [idlecnt - 1] = w;
1173	}	1550	}
1174		1551
1175	void	1552	void
1176	ev_idle_stop (EV_P_ struct ev_idle *w)	1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1177	{	1554	{
1178	ev_clear_pending (EV_A_ (W)w);	1555	ev_clear_pending (EV_A_ (W)w);
1179	if (ev_is_active (w))	1556	if (expect_false (!ev_is_active (w)))
1180	return;	1557	return;
1181		1558
1182	idles [w->active - 1] = idles [--idlecnt];	1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1183	ev_stop (EV_A_ (W)w);	1560	ev_stop (EV_A_ (W)w);
1184	}	1561	}
1185		1562
1186	void	1563	void
1187	ev_prepare_start (EV_P_ struct ev_prepare *w)	1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1188	{	1565	{
1189	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1190	return;	1567	return;
1191		1568
1192	ev_start (EV_A_ (W)w, ++preparecnt);	1569	ev_start (EV_A_ (W)w, ++preparecnt);
1193	array_needsize (prepares, preparemax, preparecnt, );	1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1194	prepares [preparecnt - 1] = w;	1571	prepares [preparecnt - 1] = w;
1195	}	1572	}
1196		1573
1197	void	1574	void
1198	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1199	{	1576	{
1200	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1201	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1202	return;	1579	return;
1203		1580
1204	prepares [w->active - 1] = prepares [--preparecnt];	1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1205	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1206	}	1583	}
1207		1584
1208	void	1585	void
1209	ev_check_start (EV_P_ struct ev_check *w)	1586	ev_check_start (EV_P_ struct ev_check *w)
1210	{	1587	{
1211	if (ev_is_active (w))	1588	if (expect_false (ev_is_active (w)))
1212	return;	1589	return;
1213		1590
1214	ev_start (EV_A_ (W)w, ++checkcnt);	1591	ev_start (EV_A_ (W)w, ++checkcnt);
1215	array_needsize (checks, checkmax, checkcnt, );	1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1216	checks [checkcnt - 1] = w;	1593	checks [checkcnt - 1] = w;
1217	}	1594	}
1218		1595
1219	void	1596	void
1220	ev_check_stop (EV_P_ struct ev_check *w)	1597	ev_check_stop (EV_P_ struct ev_check *w)
1221	{	1598	{
1222	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1223	if (ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1224	return;	1601	return;
1225		1602
1226	checks [w->active - 1] = checks [--checkcnt];	1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1227	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1228	}	1605	}
1229		1606
1230	#ifndef SA_RESTART	1607	#ifndef SA_RESTART
1231	# define SA_RESTART 0	1608	# define SA_RESTART 0
…		…
1233		1610
1234	void	1611	void
1235	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1236	{	1613	{
1237	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1238	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1239	#endif	1616	#endif
1240	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1241	return;	1618	return;
1242		1619
1243	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1244		1621
1245	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1246	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1248		1625
1249	if (!w->next)	1626	if (!((WL)w)->next)
1250	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1251	struct sigaction sa;	1631	struct sigaction sa;
1252	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1253	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1255	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1256	}	1637	}
1257	}	1638	}
1258		1639
1259	void	1640	void
1260	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1261	{	1642	{
1262	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1263	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1264	return;	1645	return;
1265		1646
1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1267	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1268		1649
…		…
1272		1653
1273	void	1654	void
1274	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1275	{	1656	{
1276	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1277	assert (("child watchers are only supported in the default loop", loop == default_loop));	1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1278	#endif	1659	#endif
1279	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1280	return;	1661	return;
1281		1662
1282	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1284	}	1665	}
1285		1666
1286	void	1667	void
1287	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1288	{	1669	{
1289	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1290	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1291	return;	1672	return;
1292		1673
1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1294	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1295	}	1676	}
		1677
		1678	#if EV_MULTIPLICITY
		1679	static void
		1680	embed_cb (EV_P_ struct ev_io *io, int revents)
		1681	{
		1682	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1683
		1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1685	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1686	}
		1687
		1688	void
		1689	ev_embed_start (EV_P_ struct ev_embed *w)
		1690	{
		1691	if (expect_false (ev_is_active (w)))
		1692	return;
		1693
		1694	{
		1695	struct ev_loop *loop = w->loop;
		1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1698	}
		1699
		1700	ev_io_start (EV_A_ &w->io);
		1701	ev_start (EV_A_ (W)w, 1);
		1702	}
		1703
		1704	void
		1705	ev_embed_stop (EV_P_ struct ev_embed *w)
		1706	{
		1707	ev_clear_pending (EV_A_ (W)w);
		1708	if (expect_false (!ev_is_active (w)))
		1709	return;
		1710
		1711	ev_io_stop (EV_A_ &w->io);
		1712	ev_stop (EV_A_ (W)w);
		1713	}
		1714	#endif
1296		1715
1297	/*****************************************************************************/	1716	/*****************************************************************************/
1298		1717
1299	struct ev_once	1718	struct ev_once
1300	{	1719	{
…		…
1310	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1311	void *arg = once->arg;	1730	void *arg = once->arg;
1312		1731
1313	ev_io_stop (EV_A_ &once->io);	1732	ev_io_stop (EV_A_ &once->io);
1314	ev_timer_stop (EV_A_ &once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1315	free (once);	1734	ev_free (once);
1316		1735
1317	cb (revents, arg);	1736	cb (revents, arg);
1318	}	1737	}
1319		1738
1320	static void	1739	static void
…		…
1330	}	1749	}
1331		1750
1332	void	1751	void
1333	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1752	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1334	{	1753	{
1335	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1336		1755
1337	if (!once)	1756	if (expect_false (!once))
		1757	{
1338	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1339	else	1759	return;
1340	{	1760	}
		1761
1341	once->cb = cb;	1762	once->cb = cb;
1342	once->arg = arg;	1763	once->arg = arg;
1343		1764
1344	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1345	if (fd >= 0)	1766	if (fd >= 0)
1346	{	1767	{
1347	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1348	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1349	}	1770	}
1350		1771
1351	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1352	if (timeout >= 0.)	1773	if (timeout >= 0.)
1353	{	1774	{
1354	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1355	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1356	}
1357	}	1777	}
1358	}	1778	}
1359		1779
		1780	#ifdef __cplusplus
		1781	}
		1782	#endif
		1783

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Comparing libev/ev.c (file contents): Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs. Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC