[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 1.135 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	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		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_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
97		183
98	#ifndef EV_EMBED	184	#ifdef EV_H
		185	# include EV_H
		186	#else
99	# include "ev.h"	187	# include "ev.h"
100	#endif	188	#endif
101		189
102	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
104	# define inline inline	192	# define inline static inline
105	#else	193	#else
106	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
107	# define inline static	195	# define inline static
108	#endif	196	#endif
109		197
…		…
111	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
112		200
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
116	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
119		210
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
		216
122	/*****************************************************************************/	217	/*****************************************************************************/
123		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
124	typedef struct	267	typedef struct
125	{	268	{
126	struct ev_watcher_list *head;	269	WL head;
127	unsigned char events;	270	unsigned char events;
128	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
129	} ANFD;	275	} ANFD;
130		276
131	typedef struct	277	typedef struct
132	{	278	{
133	W w;	279	W w;
134	int events;	280	int events;
135	} ANPENDING;	281	} ANPENDING;
136		282
137	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
138		284
139	struct ev_loop	285	struct ev_loop
140	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	290	#include "ev_vars.h"
143	};
144	# undef VAR	291	#undef VAR
		292	};
145	# 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;
146		297
147	#else	298	#else
148		299
		300	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	302	#include "ev_vars.h"
151	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
152		306
153	#endif	307	#endif
154		308
155	/*****************************************************************************/	309	/*****************************************************************************/
156		310
157	inline ev_tstamp	311	ev_tstamp
158	ev_time (void)	312	ev_time (void)
159	{	313	{
160	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
161	struct timespec ts;	315	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
181	#endif	335	#endif
182		336
183	return ev_time ();	337	return ev_time ();
184	}	338	}
185		339
		340	#if EV_MULTIPLICITY
186	ev_tstamp	341	ev_tstamp
187	ev_now (EV_P)	342	ev_now (EV_P)
188	{	343	{
189	return rt_now;	344	return ev_rt_now;
190	}	345	}
		346	#endif
191		347
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
193		349
194	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
196	{ \	352	{ \
197	int newcnt = cur; \	353	int newcnt = cur; \
198	do \	354	do \
199	{ \	355	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	357	} \
202	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
203	\	359	\
204	base = realloc (base, sizeof (base) (newcnt)); \	360	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	362	cur = newcnt; \
207	}	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;
208		375
209	/*****************************************************************************/	376	/*****************************************************************************/
210		377
211	static void	378	static void
212	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
219		386
220	++base;	387	++base;
221	}	388	}
222	}	389	}
223		390
224	static void	391	void
225	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
226	{	393	{
227	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
228	{	397	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
230	return;	399	return;
231	}	400	}
232		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
233	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
234	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);
235	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
237	}	409	}
238		410
239	static void	411	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{	413	{
242	int i;	414	int i;
243		415
244	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
246	}	418	}
247		419
248	static void	420	inline void
249	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
250	{	422	{
251	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	424	struct ev_io *w;
253		425
254	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)
255	{	427	{
256	int ev = w->events & events;	428	int ev = w->events & revents;
257		429
258	if (ev)	430	if (ev)
259	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
260	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
261	}	439	}
262		440
263	/*****************************************************************************/	441	/*****************************************************************************/
264		442
265	static void	443	inline void
266	fd_reify (EV_P)	444	fd_reify (EV_P)
267	{	445	{
268	int i;	446	int i;
269		447
270	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
276	int events = 0;	454	int events = 0;
277		455
278	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)
279	events \|= w->events;	457	events \|= w->events;
280		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
281	anfd->reify = 0;	468	anfd->reify = 0;
282		469
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	471	anfd->events = events;
287	}
288	}	472	}
289		473
290	fdchangecnt = 0;	474	fdchangecnt = 0;
291	}	475	}
292		476
293	static void	477	static void
294	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
295	{	479	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	480	if (expect_false (anfds [fd].reify))
297	return;	481	return;
298		482
299	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
300		484
301	++fdchangecnt;	485	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
304	}	488	}
305		489
306	static void	490	static void
307	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
309	struct ev_io *w;	493	struct ev_io *w;
310		494
311	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
312	{	496	{
313	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
314	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);
315	}	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
316	}	510	}
317		511
318	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
319	static void	513	static void
320	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
321	{	515	{
322	int fd;	516	int fd;
323		517
324	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	519	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
328	}	522	}
329		523
330	/* 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 */
331	static void	525	static void
332	fd_enomem (EV_P)	526	fd_enomem (EV_P)
333	{	527	{
334	int fd = anfdmax;	528	int fd;
335		529
336	while (fd--)	530	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	531	if (anfds [fd].events)
338	{	532	{
339	close (fd);
340	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
341	return;	534	return;
342	}	535	}
343	}	536	}
344		537
345	/* 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 */
346	static void	539	static void
347	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
348	{	541	{
349	int fd;	542	int fd;
350		543
351	/* 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 */
352	for (fd = 0; fd < anfdmax; ++fd)	545	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	546	if (anfds [fd].events)
354	{	547	{
355	anfds [fd].events = 0;	548	anfds [fd].events = 0;
356	fd_change (fd);	549	fd_change (EV_A_ fd);
357	}	550	}
358	}	551	}
359		552
360	/*****************************************************************************/	553	/*****************************************************************************/
361		554
…		…
365	WT w = heap [k];	558	WT w = heap [k];
366		559
367	while (k && heap [k >> 1]->at > w->at)	560	while (k && heap [k >> 1]->at > w->at)
368	{	561	{
369	heap [k] = heap [k >> 1];	562	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	563	((W)heap [k])->active = k + 1;
371	k >>= 1;	564	k >>= 1;
372	}	565	}
373		566
374	heap [k] = w;	567	heap [k] = w;
375	heap [k]->active = k + 1;	568	((W)heap [k])->active = k + 1;
376		569
377	}	570	}
378		571
379	static void	572	static void
380	downheap (WT *heap, int N, int k)	573	downheap (WT *heap, int N, int k)
…		…
390		583
391	if (w->at <= heap [j]->at)	584	if (w->at <= heap [j]->at)
392	break;	585	break;
393		586
394	heap [k] = heap [j];	587	heap [k] = heap [j];
395	heap [k]->active = k + 1;	588	((W)heap [k])->active = k + 1;
396	k = j;	589	k = j;
397	}	590	}
398		591
399	heap [k] = w;	592	heap [k] = w;
400	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);
401	}	601	}
402		602
403	/*****************************************************************************/	603	/*****************************************************************************/
404		604
405	typedef struct	605	typedef struct
406	{	606	{
407	struct ev_watcher_list *head;	607	WL head;
408	sig_atomic_t volatile gotsig;	608	sig_atomic_t volatile gotsig;
409	} ANSIG;	609	} ANSIG;
410		610
411	static ANSIG *signals;	611	static ANSIG *signals;
412	static int signalmax;	612	static int signalmax;
413		613
414	static int sigpipe [2];	614	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	615	static sig_atomic_t volatile gotsig;
		616	static struct ev_io sigev;
416		617
417	static void	618	static void
418	signals_init (ANSIG *base, int count)	619	signals_init (ANSIG *base, int count)
419	{	620	{
420	while (count--)	621	while (count--)
…		…
427	}	628	}
428		629
429	static void	630	static void
430	sighandler (int signum)	631	sighandler (int signum)
431	{	632	{
		633	#if _WIN32
		634	signal (signum, sighandler);
		635	#endif
		636
432	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
433		638
434	if (!gotsig)	639	if (!gotsig)
435	{	640	{
436	int old_errno = errno;	641	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	644	errno = old_errno;
440	}	645	}
441	}	646	}
442		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
443	static void	668	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
445	{	670	{
446	struct ev_watcher_list *w;
447	int signum;	671	int signum;
448		672
449	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	674	gotsig = 0;
451		675
452	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
454	{	678	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;	679	}
456		680
457	for (w = signals [signum].head; w; w = w->next)	681	static void
458	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
459	}	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
460	}	691	}
461		692
462	static void	693	static void
463	siginit (EV_P)	694	siginit (EV_P)
464	{	695	{
465	#ifndef WIN32	696	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	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		698
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	702	}
478		703
479	/*****************************************************************************/	704	/*****************************************************************************/
480		705
		706	static struct ev_child *childs [PID_HASHSIZE];
		707
481	#ifndef WIN32	708	#ifndef _WIN32
		709
		710	static struct ev_signal childev;
482		711
483	#ifndef WCONTINUED	712	#ifndef WCONTINUED
484	# define WCONTINUED 0	713	# define WCONTINUED 0
485	#endif	714	#endif
486		715
…		…
490	struct ev_child *w;	719	struct ev_child *w;
491		720
492	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)
493	if (w->pid == pid \|\| !w->pid)	722	if (w->pid == pid \|\| !w->pid)
494	{	723	{
495	w->priority = sw->priority; /* need to do it now */	724	ev_priority (w) = ev_priority (sw); /* need to do it now */
496	w->rpid = pid;	725	w->rpid = pid;
497	w->rstatus = status;	726	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
499	}	728	}
500	}	729	}
501		730
502	static void	731	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
505	int pid, status;	734	int pid, status;
506		735
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	737	{
509	/* 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 */
510	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		741
512	child_reap (EV_A_ sw, pid, pid, status);	742	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 */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
514	}	744	}
515	}	745	}
516		746
517	#endif	747	#endif
518		748
519	/*****************************************************************************/	749	/*****************************************************************************/
520		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
521	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
522	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
523	#endif	756	#endif
524	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	758	# include "ev_epoll.c"
526	#endif	759	#endif
527	#if EV_USEV_POLL	760	#if EV_USE_POLL
528	# include "ev_poll.c"	761	# include "ev_poll.c"
529	#endif	762	#endif
530	#if EV_USE_SELECT	763	#if EV_USE_SELECT
531	# include "ev_select.c"	764	# include "ev_select.c"
532	#endif	765	#endif
…		…
545		778
546	/* 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 */
547	static int	780	static int
548	enable_secure (void)	781	enable_secure (void)
549	{	782	{
550	#ifdef WIN32	783	#ifdef _WIN32
551	return 0;	784	return 0;
552	#else	785	#else
553	return getuid () != geteuid ()	786	return getuid () != geteuid ()
554	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
555	#endif	788	#endif
556	}	789	}
557		790
558	int	791	unsigned int
559	ev_method (EV_P)	792	ev_supported_backends (void)
560	{	793	{
561	return method;	794	unsigned int flags = 0;
562	}
563		795
564	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
565	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)
566	{	807	{
567	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)
568	{	841	{
569	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
570	{	843	{
571	struct timespec ts;	844	struct timespec ts;
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	846	have_monotonic = 1;
574	}	847	}
575	#endif	848	#endif
576		849
577	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	851	mn_now = get_clock ();
579	now_floor = mn_now;	852	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
581		854
582	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else
586	methods = EVMETHOD_ANY;
587		859
588	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
589	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591	#endif	869	#endif
592	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594	#endif	872	#endif
595	#if EV_USEV_POLL	873	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597	#endif	875	#endif
598	#if EV_USE_SELECT	876	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600	#endif	878	#endif
601	}
602	}
603		879
604	void	880	ev_init (&sigev, sigcb);
		881	ev_set_priority (&sigev, EV_MAXPRI);
		882	}
		883	}
		884
		885	static void
605	loop_destroy (EV_P)	886	loop_destroy (EV_P)
606	{	887	{
		888	int i;
		889
		890	#if EV_USE_PORT
		891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		892	#endif
607	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609	#endif	895	#endif
610	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612	#endif	898	#endif
613	#if EV_USEV_POLL	899	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615	#endif	901	#endif
616	#if EV_USE_SELECT	902	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618	#endif	904	#endif
619		905
620	method = 0;	906	for (i = NUMPRI; i--; )
621	/TODO/	907	array_free (pending, [i]);
622	}
623		908
624	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
625	loop_fork (EV_P)	923	loop_fork (EV_P)
626	{	924	{
627	/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
628	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630	#endif	933	#endif
631	#if EV_USE_KQUEUE	934
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	935	if (ev_is_active (&sigev))
633	#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;
634	}	951	}
635		952
636	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
637	struct ev_loop *	954	struct ev_loop *
638	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
639	{	956	{
640	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));
641		958
		959	memset (loop, 0, sizeof (struct ev_loop));
		960
642	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
643		962
644	if (ev_methods (EV_A))	963	if (ev_backend (EV_A))
645	return loop;	964	return loop;
646		965
647	return 0;	966	return 0;
648	}	967	}
649		968
650	void	969	void
651	ev_loop_destroy (EV_P)	970	ev_loop_destroy (EV_P)
652	{	971	{
653	loop_destroy (EV_A);	972	loop_destroy (EV_A);
654	free (loop);	973	ev_free (loop);
655	}	974	}
656		975
657	void	976	void
658	ev_loop_fork (EV_P)	977	ev_loop_fork (EV_P)
659	{	978	{
660	loop_fork (EV_A);	979	postfork = 1;
661	}	980	}
662		981
663	#endif	982	#endif
664		983
665	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
670	#else	987	#else
671	static int default_loop;
672
673	int	988	int
		989	ev_default_loop (unsigned int flags)
674	#endif	990	#endif
675	ev_default_loop (int methods)
676	{	991	{
677	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	993	if (pipe (sigpipe))
679	return 0;	994	return 0;
680		995
681	if (!default_loop)	996	if (!ev_default_loop_ptr)
682	{	997	{
683	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
684	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685	#else	1000	#else
686	default_loop = 1;	1001	ev_default_loop_ptr = 1;
687	#endif	1002	#endif
688		1003
689	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
690		1005
691	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
692	{	1007	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	1008	siginit (EV_A);
696		1009
697	#ifndef WIN32	1010	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	1015	#endif
703	}	1016	}
704	else	1017	else
705	default_loop = 0;	1018	ev_default_loop_ptr = 0;
706	}	1019	}
707		1020
708	return default_loop;	1021	return ev_default_loop_ptr;
709	}	1022	}
710		1023
711	void	1024	void
712	ev_default_destroy (void)	1025	ev_default_destroy (void)
713	{	1026	{
714	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
716	#endif	1029	#endif
717		1030
		1031	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
720		1035
721	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	1037	ev_io_stop (EV_A_ &sigev);
723		1038
724	close (sigpipe [0]); sigpipe [0] = 0;	1039	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		1041
727	loop_destroy (EV_A);	1042	loop_destroy (EV_A);
728	}	1043	}
729		1044
730	void	1045	void
731	ev_default_fork (EV_P)	1046	ev_default_fork (void)
732	{	1047	{
733	loop_fork (EV_A);	1048	#if EV_MULTIPLICITY
		1049	struct ev_loop *loop = ev_default_loop_ptr;
		1050	#endif
734		1051
735	ev_io_stop (EV_A_ &sigev);	1052	if (backend)
736	close (sigpipe [0]);	1053	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	1054	}
743		1055
744	/*****************************************************************************/	1056	/*****************************************************************************/
745		1057
746	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
747	call_pending (EV_P)	1071	call_pending (EV_P)
748	{	1072	{
749	int pri;	1073	int pri;
750		1074
751	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
752	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
753	{	1077	{
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		1079
756	if (p->w)	1080	if (expect_true (p->w))
757	{	1081	{
758	p->w->pending = 0;	1082	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
760	}	1084	}
761	}	1085	}
762	}	1086	}
763		1087
764	static void	1088	inline void
765	timers_reify (EV_P)	1089	timers_reify (EV_P)
766	{	1090	{
767	while (timercnt && timers [0]->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1092	{
769	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)));
770		1096
771	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
772	if (w->repeat)	1098	if (w->repeat)
773	{	1099	{
774	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
775	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
776	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
777	}	1107	}
778	else	1108	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1110
781	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1112	}
783	}	1113	}
784		1114
785	static void	1115	#if EV_PERIODICS
		1116	inline void
786	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
787	{	1118	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1120	{
790	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
791		1122
		1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1124
792	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
793	if (w->interval)	1126	if (w->reschedule_cb)
794	{	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	{
795	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;
796	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));
797	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1137	}
799	else	1138	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1140
802	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1142	}
804	}	1143	}
805		1144
806	static void	1145	static void
807	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
811	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
813	{	1152	{
814	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
815		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1157	else if (w->interval)
817	{
818	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;
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	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
829	}	1164	}
		1165	#endif
830		1166
831	inline int	1167	inline int
832	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
833	{	1169	{
834	mn_now = get_clock ();	1170	mn_now = get_clock ();
835		1171
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1173	{
838	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1175	return 0;
840	}	1176	}
841	else	1177	else
842	{	1178	{
843	now_floor = mn_now;	1179	now_floor = mn_now;
844	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
845	return 1;	1181	return 1;
846	}	1182	}
847	}	1183	}
848		1184
849	static void	1185	inline void
850	time_update (EV_P)	1186	time_update (EV_P)
851	{	1187	{
852	int i;	1188	int i;
853		1189
854	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
858	{	1194	{
859	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
860		1196
861	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 */
862	{	1198	{
863	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
864		1200
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1202	return; /* all is well */
867		1203
868	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1205	mn_now = get_clock ();
870	now_floor = mn_now;	1206	now_floor = mn_now;
871	}	1207	}
872		1208
		1209	# if EV_PERIODICS
873	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1214	}
877	}	1215	}
878	else	1216	else
879	#endif	1217	#endif
880	{	1218	{
881	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
882		1220
883	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))
884	{	1222	{
		1223	#if EV_PERIODICS
885	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
886		1226
887	/* 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 */
888	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1230	}
891		1231
892	mn_now = rt_now;	1232	mn_now = ev_rt_now;
893	}	1233	}
894	}	1234	}
895		1235
896	void	1236	void
897	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
908	static int loop_done;	1248	static int loop_done;
909		1249
910	void	1250	void
911	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
912	{	1252	{
913	double block;
914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
915		1256
916	do	1257	while (activecnt)
917	{	1258	{
918	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
919	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
920	{	1261	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1263	call_pending (EV_A);
923	}	1264	}
924		1265
		1266	/* we might have forked, so reify kernel state if necessary */
		1267	if (expect_false (postfork))
		1268	loop_fork (EV_A);
		1269
925	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1271	fd_reify (EV_A);
927		1272
928	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
929		1276
930	/* we only need this for !monotonic clockor timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
931	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 */
932	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
935	else	1285	else
936	#endif	1286	#endif
937	{	1287	{
938	rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1289	mn_now = ev_rt_now;
940	}	1290	}
941		1291
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;
944	else
945	{
946	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
947		1293
948	if (timercnt)	1294	if (timercnt)
949	{	1295	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951	if (block > to) block = to;	1297	if (block > to) block = to;
952	}	1298	}
953		1299
		1300	#if EV_PERIODICS
954	if (periodiccnt)	1301	if (periodiccnt)
955	{	1302	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957	if (block > to) block = to;	1304	if (block > to) block = to;
958	}	1305	}
		1306	#endif
959		1307
960	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
961	}	1309	}
962		1310
963	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
964		1313
965	/* update rt_now, do magic */	1314	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1315	time_update (EV_A);
967		1316
968	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
970	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
971		1322
972	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
973	if (!pendingcnt)	1324	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1326
976	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
977	if (checkcnt)	1328	if (expect_false (checkcnt))
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1330
980	call_pending (EV_A);	1331	call_pending (EV_A);
981	}
982	while (activecnt && !loop_done);
983		1332
984	if (loop_done != 2)	1333	if (expect_false (loop_done))
985	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
986	}	1339	}
987		1340
988	void	1341	void
989	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
990	{	1343	{
…		…
1047	void	1400	void
1048	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
1049	{	1402	{
1050	int fd = w->fd;	1403	int fd = w->fd;
1051		1404
1052	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
1053	return;	1406	return;
1054		1407
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1409
1057	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1413
1061	fd_change (EV_A_ fd);	1414	fd_change (EV_A_ fd);
1062	}	1415	}
1063		1416
1064	void	1417	void
1065	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
1066	{	1419	{
1067	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
1069	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1070		1425
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
1073		1428
1074	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
1075	}	1430	}
1076		1431
1077	void	1432	void
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1079	{	1434	{
1080	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1081	return;	1436	return;
1082		1437
1083	w->at += mn_now;	1438	((WT)w)->at += mn_now;
1084		1439
1085	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.));
1086		1441
1087	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
		1446
		1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1091	}	1448	}
1092		1449
1093	void	1450	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1095	{	1452	{
1096	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1098	return;	1455	return;
1099		1456
		1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1458
1100	if (w->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1101	{	1460	{
1102	timers [w->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1463	}
1105		1464
1106	w->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1107		1466
1108	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1109	}	1468	}
1110		1469
1111	void	1470	void
…		…
1113	{	1472	{
1114	if (ev_is_active (w))	1473	if (ev_is_active (w))
1115	{	1474	{
1116	if (w->repeat)	1475	if (w->repeat)
1117	{	1476	{
1118	w->at = mn_now + w->repeat;	1477	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1479	}
1121	else	1480	else
1122	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1123	}	1482	}
1124	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1126	}	1488	}
1127		1489
		1490	#if EV_PERIODICS
1128	void	1491	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1130	{	1493	{
1131	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1132	return;	1495	return;
1133		1496
		1497	if (w->reschedule_cb)
		1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1499	else if (w->interval)
		1500	{
1134	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.));
1135
1136	/* 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 */
1137	if (w->interval)
1138	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	}
1139		1505
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
		1510
		1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1144	}	1512	}
1145		1513
1146	void	1514	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1148	{	1516	{
1149	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1151	return;	1519	return;
1152		1520
		1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1522
1153	if (w->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1154	{	1524	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1527	}
1158		1528
1159	ev_stop (EV_A_ (W)w);	1529	ev_stop (EV_A_ (W)w);
1160	}	1530	}
1161		1531
1162	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
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1542	ev_idle_start (EV_P_ struct ev_idle *w)
1164	{	1543	{
1165	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1166	return;	1545	return;
1167		1546
1168	ev_start (EV_A_ (W)w, ++idlecnt);	1547	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );	1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1170	idles [idlecnt - 1] = w;	1549	idles [idlecnt - 1] = w;
1171	}	1550	}
1172		1551
1173	void	1552	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)	1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{	1554	{
1176	ev_clear_pending (EV_A_ (W)w);	1555	ev_clear_pending (EV_A_ (W)w);
1177	if (ev_is_active (w))	1556	if (expect_false (!ev_is_active (w)))
1178	return;	1557	return;
1179		1558
1180	idles [w->active - 1] = idles [--idlecnt];	1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1181	ev_stop (EV_A_ (W)w);	1560	ev_stop (EV_A_ (W)w);
1182	}	1561	}
1183		1562
1184	void	1563	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)	1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1186	{	1565	{
1187	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1188	return;	1567	return;
1189		1568
1190	ev_start (EV_A_ (W)w, ++preparecnt);	1569	ev_start (EV_A_ (W)w, ++preparecnt);
1191	array_needsize (prepares, preparemax, preparecnt, );	1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1192	prepares [preparecnt - 1] = w;	1571	prepares [preparecnt - 1] = w;
1193	}	1572	}
1194		1573
1195	void	1574	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197	{	1576	{
1198	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1200	return;	1579	return;
1201		1580
1202	prepares [w->active - 1] = prepares [--preparecnt];	1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1204	}	1583	}
1205		1584
1206	void	1585	void
1207	ev_check_start (EV_P_ struct ev_check *w)	1586	ev_check_start (EV_P_ struct ev_check *w)
1208	{	1587	{
1209	if (ev_is_active (w))	1588	if (expect_false (ev_is_active (w)))
1210	return;	1589	return;
1211		1590
1212	ev_start (EV_A_ (W)w, ++checkcnt);	1591	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );	1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1214	checks [checkcnt - 1] = w;	1593	checks [checkcnt - 1] = w;
1215	}	1594	}
1216		1595
1217	void	1596	void
1218	ev_check_stop (EV_P_ struct ev_check *w)	1597	ev_check_stop (EV_P_ struct ev_check *w)
1219	{	1598	{
1220	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1222	return;	1601	return;
1223		1602
1224	checks [w->active - 1] = checks [--checkcnt];	1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1226	}	1605	}
1227		1606
1228	#ifndef SA_RESTART	1607	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1608	# define SA_RESTART 0
…		…
1231		1610
1232	void	1611	void
1233	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1234	{	1613	{
1235	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1236	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));
1237	#endif	1616	#endif
1238	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1239	return;	1618	return;
1240		1619
1241	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));
1242		1621
1243	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1625
1247	if (!w->next)	1626	if (!((WL)w)->next)
1248	{	1627	{
		1628	#if _WIN32
		1629	signal (w->signum, sighandler);
		1630	#else
1249	struct sigaction sa;	1631	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
1252	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 */
1253	sigaction (w->signum, &sa, 0);	1635	sigaction (w->signum, &sa, 0);
		1636	#endif
1254	}	1637	}
1255	}	1638	}
1256		1639
1257	void	1640	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1259	{	1642	{
1260	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1262	return;	1645	return;
1263		1646
1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1265	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1266		1649
…		…
1270		1653
1271	void	1654	void
1272	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1273	{	1656	{
1274	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1275	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));
1276	#endif	1659	#endif
1277	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1278	return;	1661	return;
1279		1662
1280	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1282	}	1665	}
1283		1666
1284	void	1667	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1286	{	1669	{
1287	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1289	return;	1672	return;
1290		1673
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1293	}	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
1294		1715
1295	/*****************************************************************************/	1716	/*****************************************************************************/
1296		1717
1297	struct ev_once	1718	struct ev_once
1298	{	1719	{
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1729	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1730	void *arg = once->arg;
1310		1731
1311	ev_io_stop (EV_A_ &once->io);	1732	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1733	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1734	ev_free (once);
1314		1735
1315	cb (revents, arg);	1736	cb (revents, arg);
1316	}	1737	}
1317		1738
1318	static void	1739	static void
…		…
1328	}	1749	}
1329		1750
1330	void	1751	void
1331	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)
1332	{	1753	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1755
1335	if (!once)	1756	if (expect_false (!once))
		1757	{
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1759	return;
1338	{	1760	}
		1761
1339	once->cb = cb;	1762	once->cb = cb;
1340	once->arg = arg;	1763	once->arg = arg;
1341		1764
1342	ev_watcher_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1766	if (fd >= 0)
1344	{	1767	{
1345	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1347	}	1770	}
1348		1771
1349	ev_watcher_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1773	if (timeout >= 0.)
1351	{	1774	{
1352	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1354	}
1355	}	1777	}
1356	}	1778	}
1357		1779
		1780	#ifdef __cplusplus
		1781	}
		1782	#endif
		1783

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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 1.135 by root, Sat Nov 24 06:23:27 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 1.135 by root, Sat Nov 24 06:23:27 2007 UTC