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

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 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	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		56	# define EV_USE_SELECT 1
		57	# else
		58	# define EV_USE_SELECT 0
		59	# endif
		60
		61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		62	# define EV_USE_POLL 1
		63	# else
		64	# define EV_USE_POLL 0
		65	# endif
		66
		67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		68	# define EV_USE_EPOLL 1
		69	# else
		70	# define EV_USE_EPOLL 0
		71	# endif
		72
		73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		74	# define EV_USE_KQUEUE 1
		75	# else
		76	# define EV_USE_KQUEUE 0
		77	# endif
		78
		79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		80	# define EV_USE_PORT 1
		81	# else
		82	# define EV_USE_PORT 0
		83	# endif
		84
33	#endif	85	#endif
34		86
35	#include <math.h>	87	#include <math.h>
36	#include <stdlib.h>	88	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	89	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	90	#include <stddef.h>
41		91
42	#include <stdio.h>	92	#include <stdio.h>
43		93
44	#include <assert.h>	94	#include <assert.h>
45	#include <errno.h>	95	#include <errno.h>
46	#include <sys/types.h>	96	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	97	#include <time.h>
50		98
		99	#include <signal.h>
		100
		101	#ifndef _WIN32
		102	# include <unistd.h>
		103	# include <sys/time.h>
		104	# include <sys/wait.h>
		105	#else
		106	# define WIN32_LEAN_AND_MEAN
		107	# include <windows.h>
		108	# ifndef EV_SELECT_IS_WINSOCKET
		109	# define EV_SELECT_IS_WINSOCKET 1
		110	# endif
		111	#endif
		112
51	/**/	113	/**/
52		114
53	#ifndef EV_USE_MONOTONIC	115	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 0
55	#endif	121	#endif
56		122
57	#ifndef EV_USE_SELECT	123	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	124	# define EV_USE_SELECT 1
59	#endif	125	#endif
60		126
61	#ifndef EV_USE_POLL	127	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	128	# ifdef _WIN32
		129	# define EV_USE_POLL 0
		130	# else
		131	# define EV_USE_POLL 1
		132	# endif
63	#endif	133	#endif
64		134
65	#ifndef EV_USE_EPOLL	135	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	136	# define EV_USE_EPOLL 0
67	#endif	137	#endif
68		138
69	#ifndef EV_USE_KQUEUE	139	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	140	# define EV_USE_KQUEUE 0
71	#endif	141	#endif
72		142
73	#ifndef EV_USE_REALTIME	143	#ifndef EV_USE_PORT
74	# define EV_USE_REALTIME 1	144	# define EV_USE_PORT 0
75	#endif	145	#endif
76		146
77	/**/	147	/**/
		148
		149	/* darwin simply cannot be helped */
		150	#ifdef __APPLE__
		151	# undef EV_USE_POLL
		152	# undef EV_USE_KQUEUE
		153	#endif
78		154
79	#ifndef CLOCK_MONOTONIC	155	#ifndef CLOCK_MONOTONIC
80	# undef EV_USE_MONOTONIC	156	# undef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 0	157	# define EV_USE_MONOTONIC 0
82	#endif	158	#endif
…		…
84	#ifndef CLOCK_REALTIME	160	#ifndef CLOCK_REALTIME
85	# undef EV_USE_REALTIME	161	# undef EV_USE_REALTIME
86	# define EV_USE_REALTIME 0	162	# define EV_USE_REALTIME 0
87	#endif	163	#endif
88		164
		165	#if EV_SELECT_IS_WINSOCKET
		166	# include <winsock.h>
		167	#endif
		168
89	/**/	169	/**/
90		170
91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	171	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	172	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	173	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
94	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	174	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
95		175
		176	#ifdef EV_H
		177	# include EV_H
		178	#else
96	#include "ev.h"	179	# include "ev.h"
		180	#endif
97		181
98	#if __GNUC__ >= 3	182	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	183	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	184	# define inline static inline
101	#else	185	#else
102	# define expect(expr,value) (expr)	186	# define expect(expr,value) (expr)
103	# define inline static	187	# define inline static
104	#endif	188	#endif
105		189
…		…
107	#define expect_true(expr) expect ((expr) != 0, 1)	191	#define expect_true(expr) expect ((expr) != 0, 1)
108		192
109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
111		195
		196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		197	#define EMPTY2(a,b) /* used to suppress some warnings */
		198
112	typedef struct ev_watcher *W;	199	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	200	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	201	typedef struct ev_watcher_time *WT;
115		202
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		204
		205	#ifdef _WIN32
		206	# include "ev_win32.c"
		207	#endif
		208
		209	/*****************************************************************************/
		210
		211	static void (syserr_cb)(const char msg);
		212
		213	void ev_set_syserr_cb (void (cb)(const char msg))
		214	{
		215	syserr_cb = cb;
		216	}
		217
		218	static void
		219	syserr (const char *msg)
		220	{
		221	if (!msg)
		222	msg = "(libev) system error";
		223
		224	if (syserr_cb)
		225	syserr_cb (msg);
		226	else
		227	{
		228	perror (msg);
		229	abort ();
		230	}
		231	}
		232
		233	static void (alloc)(void *ptr, long size);
		234
		235	void ev_set_allocator (void (cb)(void *ptr, long size))
		236	{
		237	alloc = cb;
		238	}
		239
		240	static void *
		241	ev_realloc (void *ptr, long size)
		242	{
		243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		244
		245	if (!ptr && size)
		246	{
		247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		248	abort ();
		249	}
		250
		251	return ptr;
		252	}
		253
		254	#define ev_malloc(size) ev_realloc (0, (size))
		255	#define ev_free(ptr) ev_realloc ((ptr), 0)
		256
		257	/*****************************************************************************/
		258
		259	typedef struct
		260	{
		261	WL head;
		262	unsigned char events;
		263	unsigned char reify;
		264	#if EV_SELECT_IS_WINSOCKET
		265	SOCKET handle;
		266	#endif
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	ev_tstamp ev_rt_now;
		280	#define ev_rt_now ((loop)->ev_rt_now)
		281	#define VAR(name,decl) decl;
		282	#include "ev_vars.h"
		283	#undef VAR
		284	};
		285	#include "ev_wrap.h"
		286
		287	static struct ev_loop default_loop_struct;
		288	struct ev_loop *ev_default_loop_ptr;
		289
		290	#else
		291
117	ev_tstamp ev_now;	292	ev_tstamp ev_rt_now;
118	int ev_method;	293	#define VAR(name,decl) static decl;
		294	#include "ev_vars.h"
		295	#undef VAR
119		296
120	static int have_monotonic; /* runtime */	297	static int ev_default_loop_ptr;
121		298
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	299	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		300
126	/*****************************************************************************/	301	/*****************************************************************************/
127		302
128	ev_tstamp	303	ev_tstamp
129	ev_time (void)	304	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	312	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	313	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	314	#endif
140	}	315	}
141		316
142	static ev_tstamp	317	inline ev_tstamp
143	get_clock (void)	318	get_clock (void)
144	{	319	{
145	#if EV_USE_MONOTONIC	320	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	321	if (expect_true (have_monotonic))
147	{	322	{
…		…
152	#endif	327	#endif
153		328
154	return ev_time ();	329	return ev_time ();
155	}	330	}
156		331
		332	#if EV_MULTIPLICITY
		333	ev_tstamp
		334	ev_now (EV_P)
		335	{
		336	return ev_rt_now;
		337	}
		338	#endif
		339
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	340	#define array_roundsize(type,n) (((n) \| 4) & ~3)
158		341
159	#define array_needsize(base,cur,cnt,init) \	342	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	343	if (expect_false ((cnt) > cur)) \
161	{ \	344	{ \
162	int newcnt = cur; \	345	int newcnt = cur; \
163	do \	346	do \
164	{ \	347	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	348	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	349	} \
167	while ((cnt) > newcnt); \	350	while ((cnt) > newcnt); \
168	\	351	\
169	base = realloc (base, sizeof (base) (newcnt)); \	352	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
170	init (base + cur, newcnt - cur); \	353	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	354	cur = newcnt; \
172	}	355	}
		356
		357	#define array_slim(type,stem) \
		358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		359	{ \
		360	stem ## max = array_roundsize (stem ## cnt >> 1); \
		361	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		363	}
		364
		365	#define array_free(stem, idx) \
		366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
173		367
174	/*****************************************************************************/	368	/*****************************************************************************/
175
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185		369
186	static void	370	static void
187	anfds_init (ANFD *base, int count)	371	anfds_init (ANFD *base, int count)
188	{	372	{
189	while (count--)	373	while (count--)
…		…
194		378
195	++base;	379	++base;
196	}	380	}
197	}	381	}
198		382
199	typedef struct	383	void
		384	ev_feed_event (EV_P_ void *w, int revents)
200	{	385	{
201	W w;	386	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		387
205	static ANPENDING *pendings [NUMPRI];	388	if (expect_false (w_->pending))
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void
209	event (W w, int events)
210	{
211	if (w->pending)
212	{	389	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	390	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
214	return;	391	return;
215	}	392	}
216		393
217	w->pending = ++pendingcnt [ABSPRI (w)];	394	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	398	}
222		399
223	static void	400	static void
224	queue_events (W *events, int eventcnt, int type)	401	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	402	{
226	int i;	403	int i;
227		404
228	for (i = 0; i < eventcnt; ++i)	405	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	406	ev_feed_event (EV_A_ events [i], type);
230	}	407	}
231		408
232	static void	409	inline void
233	fd_event (int fd, int events)	410	fd_event (EV_P_ int fd, int revents)
234	{	411	{
235	ANFD *anfd = anfds + fd;	412	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	413	struct ev_io *w;
237		414
238	for (w = anfd->head; w; w = w->next)	415	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	416	{
240	int ev = w->events & events;	417	int ev = w->events & revents;
241		418
242	if (ev)	419	if (ev)
243	event ((W)w, ev);	420	ev_feed_event (EV_A_ (W)w, ev);
244	}	421	}
		422	}
		423
		424	void
		425	ev_feed_fd_event (EV_P_ int fd, int revents)
		426	{
		427	fd_event (EV_A_ fd, revents);
245	}	428	}
246		429
247	/*****************************************************************************/	430	/*****************************************************************************/
248		431
249	static int *fdchanges;	432	inline void
250	static int fdchangemax, fdchangecnt;	433	fd_reify (EV_P)
251
252	static void
253	fd_reify (void)
254	{	434	{
255	int i;	435	int i;
256		436
257	for (i = 0; i < fdchangecnt; ++i)	437	for (i = 0; i < fdchangecnt; ++i)
258	{	438	{
…		…
260	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	441	struct ev_io *w;
262		442
263	int events = 0;	443	int events = 0;
264		444
265	for (w = anfd->head; w; w = w->next)	445	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	446	events \|= w->events;
267		447
		448	#if EV_SELECT_IS_WINSOCKET
		449	if (events)
		450	{
		451	unsigned long argp;
		452	anfd->handle = _get_osfhandle (fd);
		453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		454	}
		455	#endif
		456
268	anfd->reify = 0;	457	anfd->reify = 0;
269		458
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	459	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	460	anfd->events = events;
274	}
275	}	461	}
276		462
277	fdchangecnt = 0;	463	fdchangecnt = 0;
278	}	464	}
279		465
280	static void	466	static void
281	fd_change (int fd)	467	fd_change (EV_P_ int fd)
282	{	468	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	469	if (expect_false (anfds [fd].reify))
284	return;	470	return;
285		471
286	anfds [fd].reify = 1;	472	anfds [fd].reify = 1;
287		473
288	++fdchangecnt;	474	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
290	fdchanges [fdchangecnt - 1] = fd;	476	fdchanges [fdchangecnt - 1] = fd;
291	}	477	}
292		478
293	static void	479	static void
294	fd_kill (int fd)	480	fd_kill (EV_P_ int fd)
295	{	481	{
296	struct ev_io *w;	482	struct ev_io *w;
297		483
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	484	while ((w = (struct ev_io *)anfds [fd].head))
300	{	485	{
301	ev_io_stop (w);	486	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	487	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	488	}
		489	}
		490
		491	inline int
		492	fd_valid (int fd)
		493	{
		494	#ifdef _WIN32
		495	return _get_osfhandle (fd) != -1;
		496	#else
		497	return fcntl (fd, F_GETFD) != -1;
		498	#endif
304	}	499	}
305		500
306	/* called on EBADF to verify fds */	501	/* called on EBADF to verify fds */
307	static void	502	static void
308	fd_ebadf (void)	503	fd_ebadf (EV_P)
309	{	504	{
310	int fd;	505	int fd;
311		506
312	for (fd = 0; fd < anfdmax; ++fd)	507	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	508	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	509	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	510	fd_kill (EV_A_ fd);
316	}	511	}
317		512
318	/* called on ENOMEM in select/poll to kill some fds and retry */	513	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	514	static void
320	fd_enomem (void)	515	fd_enomem (EV_P)
321	{	516	{
322	int fd = anfdmax;	517	int fd;
323		518
324	while (fd--)	519	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	520	if (anfds [fd].events)
326	{	521	{
327	close (fd);
328	fd_kill (fd);	522	fd_kill (EV_A_ fd);
329	return;	523	return;
330	}	524	}
331	}	525	}
332		526
		527	/* usually called after fork if method needs to re-arm all fds from scratch */
		528	static void
		529	fd_rearm_all (EV_P)
		530	{
		531	int fd;
		532
		533	/* this should be highly optimised to not do anything but set a flag */
		534	for (fd = 0; fd < anfdmax; ++fd)
		535	if (anfds [fd].events)
		536	{
		537	anfds [fd].events = 0;
		538	fd_change (EV_A_ fd);
		539	}
		540	}
		541
333	/*****************************************************************************/	542	/*****************************************************************************/
334		543
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	544	static void
342	upheap (WT *timers, int k)	545	upheap (WT *heap, int k)
343	{	546	{
344	WT w = timers [k];	547	WT w = heap [k];
345		548
346	while (k && timers [k >> 1]->at > w->at)	549	while (k && heap [k >> 1]->at > w->at)
347	{	550	{
348	timers [k] = timers [k >> 1];	551	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
350	k >>= 1;	553	k >>= 1;
351	}	554	}
352		555
353	timers [k] = w;	556	heap [k] = w;
354	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
355		558
356	}	559	}
357		560
358	static void	561	static void
359	downheap (WT *timers, int N, int k)	562	downheap (WT *heap, int N, int k)
360	{	563	{
361	WT w = timers [k];	564	WT w = heap [k];
362		565
363	while (k < (N >> 1))	566	while (k < (N >> 1))
364	{	567	{
365	int j = k << 1;	568	int j = k << 1;
366		569
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	571	++j;
369		572
370	if (w->at <= timers [j]->at)	573	if (w->at <= heap [j]->at)
371	break;	574	break;
372		575
373	timers [k] = timers [j];	576	heap [k] = heap [j];
374	timers [k]->active = k + 1;	577	((W)heap [k])->active = k + 1;
375	k = j;	578	k = j;
376	}	579	}
377		580
378	timers [k] = w;	581	heap [k] = w;
379	timers [k]->active = k + 1;	582	((W)heap [k])->active = k + 1;
		583	}
		584
		585	inline void
		586	adjustheap (WT *heap, int N, int k)
		587	{
		588	upheap (heap, k);
		589	downheap (heap, N, k);
380	}	590	}
381		591
382	/*****************************************************************************/	592	/*****************************************************************************/
383		593
384	typedef struct	594	typedef struct
385	{	595	{
386	struct ev_signal *head;	596	WL head;
387	sig_atomic_t volatile gotsig;	597	sig_atomic_t volatile gotsig;
388	} ANSIG;	598	} ANSIG;
389		599
390	static ANSIG *signals;	600	static ANSIG *signals;
391	static int signalmax;	601	static int signalmax;
…		…
407	}	617	}
408		618
409	static void	619	static void
410	sighandler (int signum)	620	sighandler (int signum)
411	{	621	{
		622	#if _WIN32
		623	signal (signum, sighandler);
		624	#endif
		625
412	signals [signum - 1].gotsig = 1;	626	signals [signum - 1].gotsig = 1;
413		627
414	if (!gotsig)	628	if (!gotsig)
415	{	629	{
		630	int old_errno = errno;
416	gotsig = 1;	631	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	632	write (sigpipe [1], &signum, 1);
		633	errno = old_errno;
418	}	634	}
419	}	635	}
420		636
		637	void
		638	ev_feed_signal_event (EV_P_ int signum)
		639	{
		640	WL w;
		641
		642	#if EV_MULTIPLICITY
		643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		644	#endif
		645
		646	--signum;
		647
		648	if (signum < 0 \|\| signum >= signalmax)
		649	return;
		650
		651	signals [signum].gotsig = 0;
		652
		653	for (w = signals [signum].head; w; w = w->next)
		654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		655	}
		656
421	static void	657	static void
422	sigcb (struct ev_io *iow, int revents)	658	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	659	{
424	struct ev_signal *w;
425	int signum;	660	int signum;
426		661
427	read (sigpipe [0], &revents, 1);	662	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	663	gotsig = 0;
429		664
430	for (signum = signalmax; signum--; )	665	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	666	if (signals [signum].gotsig)
432	{	667	ev_feed_signal_event (EV_A_ signum + 1);
433	signals [signum].gotsig = 0;
434
435	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);
437	}
438	}	668	}
439		669
440	static void	670	static void
441	siginit (void)	671	fd_intern (int fd)
442	{	672	{
		673	#ifdef _WIN32
		674	int arg = 1;
		675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		676	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	677	fcntl (fd, F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445
446	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	678	fcntl (fd, F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	679	#endif
		680	}
		681
		682	static void
		683	siginit (EV_P)
		684	{
		685	fd_intern (sigpipe [0]);
		686	fd_intern (sigpipe [1]);
449		687
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	688	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	689	ev_io_start (EV_A_ &sigev);
		690	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	691	}
453		692
454	/*****************************************************************************/	693	/*****************************************************************************/
455		694
456	static struct ev_idle **idles;
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466
467	static struct ev_child *childs [PID_HASHSIZE];	695	static struct ev_child *childs [PID_HASHSIZE];
		696
		697	#ifndef _WIN32
		698
468	static struct ev_signal childev;	699	static struct ev_signal childev;
469		700
470	#ifndef WCONTINUED	701	#ifndef WCONTINUED
471	# define WCONTINUED 0	702	# define WCONTINUED 0
472	#endif	703	#endif
473		704
474	static void	705	static void
475	childcb (struct ev_signal *sw, int revents)	706	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	707	{
477	struct ev_child *w;	708	struct ev_child *w;
		709
		710	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		711	if (w->pid == pid \|\| !w->pid)
		712	{
		713	ev_priority (w) = ev_priority (sw); /* need to do it now */
		714	w->rpid = pid;
		715	w->rstatus = status;
		716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		717	}
		718	}
		719
		720	static void
		721	childcb (EV_P_ struct ev_signal *sw, int revents)
		722	{
478	int pid, status;	723	int pid, status;
479		724
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	725	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	726	{
482	if (w->pid == pid \|\| !w->pid)	727	/* make sure we are called again until all childs have been reaped */
483	{	728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	729
485	event ((W)w, EV_CHILD);	730	child_reap (EV_A_ sw, pid, pid, status);
486	}	731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		732	}
487	}	733	}
		734
		735	#endif
488		736
489	/*****************************************************************************/	737	/*****************************************************************************/
490		738
		739	#if EV_USE_PORT
		740	# include "ev_port.c"
		741	#endif
491	#if EV_USE_KQUEUE	742	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	743	# include "ev_kqueue.c"
493	#endif	744	#endif
494	#if EV_USE_EPOLL	745	#if EV_USE_EPOLL
495	# include "ev_epoll.c"	746	# include "ev_epoll.c"
…		…
511	ev_version_minor (void)	762	ev_version_minor (void)
512	{	763	{
513	return EV_VERSION_MINOR;	764	return EV_VERSION_MINOR;
514	}	765	}
515		766
516	/* return true if we are running with elevated privileges and ignore env variables */	767	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	768	static int
518	enable_secure ()	769	enable_secure (void)
519	{	770	{
		771	#ifdef _WIN32
		772	return 0;
		773	#else
520	return getuid () != geteuid ()	774	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	775	\|\| getgid () != getegid ();
		776	#endif
522	}	777	}
523		778
524	int ev_init (int methods)	779	unsigned int
		780	ev_method (EV_P)
525	{	781	{
		782	return method;
		783	}
		784
		785	static void
		786	loop_init (EV_P_ unsigned int flags)
		787	{
526	if (!ev_method)	788	if (!method)
527	{	789	{
528	#if EV_USE_MONOTONIC	790	#if EV_USE_MONOTONIC
529	{	791	{
530	struct timespec ts;	792	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	794	have_monotonic = 1;
533	}	795	}
534	#endif	796	#endif
535		797
536	ev_now = ev_time ();	798	ev_rt_now = ev_time ();
537	now = get_clock ();	799	mn_now = get_clock ();
538	now_floor = now;	800	now_floor = mn_now;
539	diff = ev_now - now;	801	rtmn_diff = ev_rt_now - mn_now;
540		802
541	if (pipe (sigpipe))	803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
542	return 0;
543
544	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	804	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		805
		806	if (!(flags & 0x0000ffff))
		807	flags \|= 0x0000ffff;
		808
550	ev_method = 0;	809	method = 0;
		810	#if EV_USE_PORT
		811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		812	#endif
551	#if EV_USE_KQUEUE	813	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
553	#endif	815	#endif
554	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
556	#endif	818	#endif
557	#if EV_USE_POLL	819	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
559	#endif	821	#endif
560	#if EV_USE_SELECT	822	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
562	#endif	824	#endif
563		825
		826	ev_init (&sigev, sigcb);
		827	ev_set_priority (&sigev, EV_MAXPRI);
		828	}
		829	}
		830
		831	static void
		832	loop_destroy (EV_P)
		833	{
		834	int i;
		835
		836	#if EV_USE_PORT
		837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		838	#endif
		839	#if EV_USE_KQUEUE
		840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		841	#endif
		842	#if EV_USE_EPOLL
		843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		844	#endif
		845	#if EV_USE_POLL
		846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		847	#endif
		848	#if EV_USE_SELECT
		849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		850	#endif
		851
		852	for (i = NUMPRI; i--; )
		853	array_free (pending, [i]);
		854
		855	/* have to use the microsoft-never-gets-it-right macro */
		856	array_free (fdchange, EMPTY0);
		857	array_free (timer, EMPTY0);
		858	#if EV_PERIODICS
		859	array_free (periodic, EMPTY0);
		860	#endif
		861	array_free (idle, EMPTY0);
		862	array_free (prepare, EMPTY0);
		863	array_free (check, EMPTY0);
		864
		865	method = 0;
		866	}
		867
		868	static void
		869	loop_fork (EV_P)
		870	{
		871	#if EV_USE_PORT
		872	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		873	#endif
		874	#if EV_USE_KQUEUE
		875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		876	#endif
		877	#if EV_USE_EPOLL
		878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		879	#endif
		880
		881	if (ev_is_active (&sigev))
		882	{
		883	/* default loop */
		884
		885	ev_ref (EV_A);
		886	ev_io_stop (EV_A_ &sigev);
		887	close (sigpipe [0]);
		888	close (sigpipe [1]);
		889
		890	while (pipe (sigpipe))
		891	syserr ("(libev) error creating pipe");
		892
		893	siginit (EV_A);
		894	}
		895
		896	postfork = 0;
		897	}
		898
		899	#if EV_MULTIPLICITY
		900	struct ev_loop *
		901	ev_loop_new (unsigned int flags)
		902	{
		903	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		904
		905	memset (loop, 0, sizeof (struct ev_loop));
		906
		907	loop_init (EV_A_ flags);
		908
		909	if (ev_method (EV_A))
		910	return loop;
		911
		912	return 0;
		913	}
		914
		915	void
		916	ev_loop_destroy (EV_P)
		917	{
		918	loop_destroy (EV_A);
		919	ev_free (loop);
		920	}
		921
		922	void
		923	ev_loop_fork (EV_P)
		924	{
		925	postfork = 1;
		926	}
		927
		928	#endif
		929
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *
		932	ev_default_loop_init (unsigned int flags)
		933	#else
		934	int
		935	ev_default_loop (unsigned int flags)
		936	#endif
		937	{
		938	if (sigpipe [0] == sigpipe [1])
		939	if (pipe (sigpipe))
		940	return 0;
		941
		942	if (!ev_default_loop_ptr)
		943	{
		944	#if EV_MULTIPLICITY
		945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		946	#else
		947	ev_default_loop_ptr = 1;
		948	#endif
		949
		950	loop_init (EV_A_ flags);
		951
564	if (ev_method)	952	if (ev_method (EV_A))
565	{	953	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	954	siginit (EV_A);
568		955
		956	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	957	ev_signal_init (&childev, childcb, SIGCHLD);
		958	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	959	ev_signal_start (EV_A_ &childev);
		960	ev_unref (EV_A); /* child watcher should not keep loop alive */
		961	#endif
571	}	962	}
		963	else
		964	ev_default_loop_ptr = 0;
572	}	965	}
573		966
574	return ev_method;	967	return ev_default_loop_ptr;
		968	}
		969
		970	void
		971	ev_default_destroy (void)
		972	{
		973	#if EV_MULTIPLICITY
		974	struct ev_loop *loop = ev_default_loop_ptr;
		975	#endif
		976
		977	#ifndef _WIN32
		978	ev_ref (EV_A); /* child watcher */
		979	ev_signal_stop (EV_A_ &childev);
		980	#endif
		981
		982	ev_ref (EV_A); /* signal watcher */
		983	ev_io_stop (EV_A_ &sigev);
		984
		985	close (sigpipe [0]); sigpipe [0] = 0;
		986	close (sigpipe [1]); sigpipe [1] = 0;
		987
		988	loop_destroy (EV_A);
		989	}
		990
		991	void
		992	ev_default_fork (void)
		993	{
		994	#if EV_MULTIPLICITY
		995	struct ev_loop *loop = ev_default_loop_ptr;
		996	#endif
		997
		998	if (method)
		999	postfork = 1;
575	}	1000	}
576		1001
577	/*****************************************************************************/	1002	/*****************************************************************************/
578		1003
579	void
580	ev_fork_prepare (void)
581	{
582	/* nop */
583	}
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif
598
599	ev_io_stop (&sigev);
600	close (sigpipe [0]);
601	close (sigpipe [1]);
602	pipe (sigpipe);
603	siginit ();
604	}
605
606	/*****************************************************************************/
607
608	static void	1004	static int
		1005	any_pending (EV_P)
		1006	{
		1007	int pri;
		1008
		1009	for (pri = NUMPRI; pri--; )
		1010	if (pendingcnt [pri])
		1011	return 1;
		1012
		1013	return 0;
		1014	}
		1015
		1016	inline void
609	call_pending (void)	1017	call_pending (EV_P)
610	{	1018	{
611	int pri;	1019	int pri;
612		1020
613	for (pri = NUMPRI; pri--; )	1021	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	1022	while (pendingcnt [pri])
615	{	1023	{
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		1025
618	if (p->w)	1026	if (expect_true (p->w))
619	{	1027	{
620	p->w->pending = 0;	1028	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	1029	EV_CB_INVOKE (p->w, p->events);
622	}	1030	}
623	}	1031	}
624	}	1032	}
625		1033
626	static void	1034	inline void
627	timers_reify (void)	1035	timers_reify (EV_P)
628	{	1036	{
629	while (timercnt && timers [0]->at <= now)	1037	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1038	{
631	struct ev_timer *w = timers [0];	1039	struct ev_timer *w = timers [0];
		1040
		1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		1042
633	/* first reschedule or stop timer */	1043	/* first reschedule or stop timer */
634	if (w->repeat)	1044	if (w->repeat)
635	{	1045	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1047
637	w->at = now + w->repeat;	1048	((WT)w)->at += w->repeat;
		1049	if (((WT)w)->at < mn_now)
		1050	((WT)w)->at = mn_now;
		1051
638	downheap ((WT *)timers, timercnt, 0);	1052	downheap ((WT *)timers, timercnt, 0);
639	}	1053	}
640	else	1054	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1056
643	event ((W)w, EV_TIMEOUT);	1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1058	}
645	}	1059	}
646		1060
647	static void	1061	#if EV_PERIODICS
		1062	inline void
648	periodics_reify (void)	1063	periodics_reify (EV_P)
649	{	1064	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1066	{
652	struct ev_periodic *w = periodics [0];	1067	struct ev_periodic *w = periodics [0];
653		1068
		1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1070
654	/* first reschedule or stop timer */	1071	/* first reschedule or stop timer */
655	if (w->interval)	1072	if (w->reschedule_cb)
656	{	1073	{
		1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1076	downheap ((WT *)periodics, periodiccnt, 0);
		1077	}
		1078	else if (w->interval)
		1079	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	1082	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1083	}
661	else	1084	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1086
664	event ((W)w, EV_PERIODIC);	1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1088	}
666	}	1089	}
667		1090
668	static void	1091	static void
669	periodics_reschedule (ev_tstamp diff)	1092	periodics_reschedule (EV_P)
670	{	1093	{
671	int i;	1094	int i;
672		1095
673	/* adjust periodics after time jump */	1096	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1097	for (i = 0; i < periodiccnt; ++i)
675	{	1098	{
676	struct ev_periodic *w = periodics [i];	1099	struct ev_periodic *w = periodics [i];
677		1100
		1101	if (w->reschedule_cb)
		1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1103	else if (w->interval)
679	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
681
682	if (fabs (diff) >= 1e-4)
683	{
684	ev_periodic_stop (w);
685	ev_periodic_start (w);
686
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}
689	}
690	}	1105	}
691	}
692		1106
693	static int	1107	/* now rebuild the heap */
		1108	for (i = periodiccnt >> 1; i--; )
		1109	downheap ((WT *)periodics, periodiccnt, i);
		1110	}
		1111	#endif
		1112
		1113	inline int
694	time_update_monotonic (void)	1114	time_update_monotonic (EV_P)
695	{	1115	{
696	now = get_clock ();	1116	mn_now = get_clock ();
697		1117
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1119	{
700	ev_now = now + diff;	1120	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1121	return 0;
702	}	1122	}
703	else	1123	else
704	{	1124	{
705	now_floor = now;	1125	now_floor = mn_now;
706	ev_now = ev_time ();	1126	ev_rt_now = ev_time ();
707	return 1;	1127	return 1;
708	}	1128	}
709	}	1129	}
710		1130
711	static void	1131	inline void
712	time_update (void)	1132	time_update (EV_P)
713	{	1133	{
714	int i;	1134	int i;
715		1135
716	#if EV_USE_MONOTONIC	1136	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1137	if (expect_true (have_monotonic))
718	{	1138	{
719	if (time_update_monotonic ())	1139	if (time_update_monotonic (EV_A))
720	{	1140	{
721	ev_tstamp odiff = diff;	1141	ev_tstamp odiff = rtmn_diff;
722		1142
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	1144	{
725	diff = ev_now - now;	1145	rtmn_diff = ev_rt_now - mn_now;
726		1146
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1148	return; /* all is well */
729		1149
730	ev_now = ev_time ();	1150	ev_rt_now = ev_time ();
731	now = get_clock ();	1151	mn_now = get_clock ();
732	now_floor = now;	1152	now_floor = mn_now;
733	}	1153	}
734		1154
		1155	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1156	periodics_reschedule (EV_A);
		1157	# endif
736	/* no timer adjustment, as the monotonic clock doesn't jump */	1158	/* no timer adjustment, as the monotonic clock doesn't jump */
		1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	1160	}
738	}	1161	}
739	else	1162	else
740	#endif	1163	#endif
741	{	1164	{
742	ev_now = ev_time ();	1165	ev_rt_now = ev_time ();
743		1166
744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1167	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	1168	{
		1169	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1170	periodics_reschedule (EV_A);
		1171	#endif
747		1172
748	/* adjust timers. this is easy, as the offset is the same for all */	1173	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	1174	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1175	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1176	}
752		1177
753	now = ev_now;	1178	mn_now = ev_rt_now;
754	}	1179	}
755	}	1180	}
756		1181
757	int ev_loop_done;	1182	void
		1183	ev_ref (EV_P)
		1184	{
		1185	++activecnt;
		1186	}
758		1187
		1188	void
		1189	ev_unref (EV_P)
		1190	{
		1191	--activecnt;
		1192	}
		1193
		1194	static int loop_done;
		1195
		1196	void
759	void ev_loop (int flags)	1197	ev_loop (EV_P_ int flags)
760	{	1198	{
761	double block;	1199	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1200	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		1201
764	do	1202	while (activecnt)
765	{	1203	{
766	/* queue check watchers (and execute them) */	1204	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1205	if (expect_false (preparecnt))
768	{	1206	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1208	call_pending (EV_A);
771	}	1209	}
772		1210
		1211	/* we might have forked, so reify kernel state if necessary */
		1212	if (expect_false (postfork))
		1213	loop_fork (EV_A);
		1214
773	/* update fd-related kernel structures */	1215	/* update fd-related kernel structures */
774	fd_reify ();	1216	fd_reify (EV_A);
775		1217
776	/* calculate blocking time */	1218	/* calculate blocking time */
777		1219
778	/* we only need this for !monotonic clockor timers, but as we basically	1220	/* we only need this for !monotonic clock or timers, but as we basically
779	always have timers, we just calculate it always */	1221	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1222	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1223	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1224	time_update_monotonic (EV_A);
783	else	1225	else
784	#endif	1226	#endif
785	{	1227	{
786	ev_now = ev_time ();	1228	ev_rt_now = ev_time ();
787	now = ev_now;	1229	mn_now = ev_rt_now;
788	}	1230	}
789		1231
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1232	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1233	block = 0.;
792	else	1234	else
793	{	1235	{
794	block = MAX_BLOCKTIME;	1236	block = MAX_BLOCKTIME;
795		1237
796	if (timercnt)	1238	if (timercnt)
797	{	1239	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1241	if (block > to) block = to;
800	}	1242	}
801		1243
		1244	#if EV_PERIODICS
802	if (periodiccnt)	1245	if (periodiccnt)
803	{	1246	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
805	if (block > to) block = to;	1248	if (block > to) block = to;
806	}	1249	}
		1250	#endif
807		1251
808	if (block < 0.) block = 0.;	1252	if (expect_false (block < 0.)) block = 0.;
809	}	1253	}
810		1254
811	method_poll (block);	1255	method_poll (EV_A_ block);
812		1256
813	/* update ev_now, do magic */	1257	/* update ev_rt_now, do magic */
814	time_update ();	1258	time_update (EV_A);
815		1259
816	/* queue pending timers and reschedule them */	1260	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1261	timers_reify (EV_A); /* relative timers called last */
		1262	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1263	periodics_reify (EV_A); /* absolute timers called first */
		1264	#endif
819		1265
820	/* queue idle watchers unless io or timers are pending */	1266	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1267	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1269
824	/* queue check watchers, to be executed first */	1270	/* queue check watchers, to be executed first */
825	if (checkcnt)	1271	if (expect_false (checkcnt))
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1273
828	call_pending ();	1274	call_pending (EV_A);
829	}
830	while (!ev_loop_done);
831		1275
		1276	if (expect_false (loop_done))
		1277	break;
		1278	}
		1279
832	if (ev_loop_done != 2)	1280	if (loop_done != 2)
833	ev_loop_done = 0;	1281	loop_done = 0;
		1282	}
		1283
		1284	void
		1285	ev_unloop (EV_P_ int how)
		1286	{
		1287	loop_done = how;
834	}	1288	}
835		1289
836	/*****************************************************************************/	1290	/*****************************************************************************/
837		1291
838	static void	1292	inline void
839	wlist_add (WL *head, WL elem)	1293	wlist_add (WL *head, WL elem)
840	{	1294	{
841	elem->next = *head;	1295	elem->next = *head;
842	*head = elem;	1296	*head = elem;
843	}	1297	}
844		1298
845	static void	1299	inline void
846	wlist_del (WL *head, WL elem)	1300	wlist_del (WL *head, WL elem)
847	{	1301	{
848	while (*head)	1302	while (*head)
849	{	1303	{
850	if (*head == elem)	1304	if (*head == elem)
…		…
855		1309
856	head = &(*head)->next;	1310	head = &(*head)->next;
857	}	1311	}
858	}	1312	}
859		1313
860	static void	1314	inline void
861	ev_clear_pending (W w)	1315	ev_clear_pending (EV_P_ W w)
862	{	1316	{
863	if (w->pending)	1317	if (w->pending)
864	{	1318	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1320	w->pending = 0;
867	}	1321	}
868	}	1322	}
869		1323
870	static void	1324	inline void
871	ev_start (W w, int active)	1325	ev_start (EV_P_ W w, int active)
872	{	1326	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1329
876	w->active = active;	1330	w->active = active;
		1331	ev_ref (EV_A);
877	}	1332	}
878		1333
879	static void	1334	inline void
880	ev_stop (W w)	1335	ev_stop (EV_P_ W w)
881	{	1336	{
		1337	ev_unref (EV_A);
882	w->active = 0;	1338	w->active = 0;
883	}	1339	}
884		1340
885	/*****************************************************************************/	1341	/*****************************************************************************/
886		1342
887	void	1343	void
888	ev_io_start (struct ev_io *w)	1344	ev_io_start (EV_P_ struct ev_io *w)
889	{	1345	{
890	int fd = w->fd;	1346	int fd = w->fd;
891		1347
892	if (ev_is_active (w))	1348	if (expect_false (ev_is_active (w)))
893	return;	1349	return;
894		1350
895	assert (("ev_io_start called with negative fd", fd >= 0));	1351	assert (("ev_io_start called with negative fd", fd >= 0));
896		1352
897	ev_start ((W)w, 1);	1353	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1356
901	fd_change (fd);	1357	fd_change (EV_A_ fd);
902	}	1358	}
903		1359
904	void	1360	void
905	ev_io_stop (struct ev_io *w)	1361	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1362	{
907	ev_clear_pending ((W)w);	1363	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1364	if (expect_false (!ev_is_active (w)))
909	return;	1365	return;
		1366
		1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
910		1368
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
913		1371
914	fd_change (w->fd);	1372	fd_change (EV_A_ w->fd);
915	}	1373	}
916		1374
917	void	1375	void
918	ev_timer_start (struct ev_timer *w)	1376	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1377	{
920	if (ev_is_active (w))	1378	if (expect_false (ev_is_active (w)))
921	return;	1379	return;
922		1380
923	w->at += now;	1381	((WT)w)->at += mn_now;
924		1382
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1384
927	ev_start ((W)w, ++timercnt);	1385	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
929	timers [timercnt - 1] = w;	1387	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1388	upheap ((WT *)timers, timercnt - 1);
931	}
932		1389
		1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1391	}
		1392
933	void	1393	void
934	ev_timer_stop (struct ev_timer *w)	1394	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1395	{
936	ev_clear_pending ((W)w);	1396	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1397	if (expect_false (!ev_is_active (w)))
938	return;	1398	return;
939		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401
940	if (w->active < timercnt--)	1402	if (expect_true (((W)w)->active < timercnt--))
941	{	1403	{
942	timers [w->active - 1] = timers [timercnt];	1404	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1406	}
945		1407
946	w->at = w->repeat;	1408	((WT)w)->at -= mn_now;
947		1409
948	ev_stop ((W)w);	1410	ev_stop (EV_A_ (W)w);
949	}	1411	}
950		1412
951	void	1413	void
952	ev_timer_again (struct ev_timer *w)	1414	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1415	{
954	if (ev_is_active (w))	1416	if (ev_is_active (w))
955	{	1417	{
956	if (w->repeat)	1418	if (w->repeat)
957	{	1419	{
958	w->at = now + w->repeat;	1420	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1422	}
961	else	1423	else
962	ev_timer_stop (w);	1424	ev_timer_stop (EV_A_ w);
963	}	1425	}
964	else if (w->repeat)	1426	else if (w->repeat)
		1427	{
		1428	w->at = w->repeat;
965	ev_timer_start (w);	1429	ev_timer_start (EV_A_ w);
		1430	}
966	}	1431	}
967		1432
		1433	#if EV_PERIODICS
968	void	1434	void
969	ev_periodic_start (struct ev_periodic *w)	1435	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1436	{
971	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
972	return;	1438	return;
973		1439
		1440	if (w->reschedule_cb)
		1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1442	else if (w->interval)
		1443	{
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1445	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1447	}
979		1448
980	ev_start ((W)w, ++periodiccnt);	1449	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
982	periodics [periodiccnt - 1] = w;	1451	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1452	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1453
		1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1455	}
		1456
986	void	1457	void
987	ev_periodic_stop (struct ev_periodic *w)	1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1459	{
989	ev_clear_pending ((W)w);	1460	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
991	return;	1462	return;
992		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465
993	if (w->active < periodiccnt--)	1466	if (expect_true (((W)w)->active < periodiccnt--))
994	{	1467	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1470	}
998		1471
999	ev_stop ((W)w);	1472	ev_stop (EV_A_ (W)w);
1000	}	1473	}
1001		1474
1002	void	1475	void
		1476	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1477	{
		1478	/* TODO: use adjustheap and recalculation */
		1479	ev_periodic_stop (EV_A_ w);
		1480	ev_periodic_start (EV_A_ w);
		1481	}
		1482	#endif
		1483
		1484	void
		1485	ev_idle_start (EV_P_ struct ev_idle *w)
		1486	{
		1487	if (expect_false (ev_is_active (w)))
		1488	return;
		1489
		1490	ev_start (EV_A_ (W)w, ++idlecnt);
		1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1492	idles [idlecnt - 1] = w;
		1493	}
		1494
		1495	void
		1496	ev_idle_stop (EV_P_ struct ev_idle *w)
		1497	{
		1498	ev_clear_pending (EV_A_ (W)w);
		1499	if (expect_false (!ev_is_active (w)))
		1500	return;
		1501
		1502	idles [((W)w)->active - 1] = idles [--idlecnt];
		1503	ev_stop (EV_A_ (W)w);
		1504	}
		1505
		1506	void
		1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1508	{
		1509	if (expect_false (ev_is_active (w)))
		1510	return;
		1511
		1512	ev_start (EV_A_ (W)w, ++preparecnt);
		1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1514	prepares [preparecnt - 1] = w;
		1515	}
		1516
		1517	void
		1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1519	{
		1520	ev_clear_pending (EV_A_ (W)w);
		1521	if (expect_false (!ev_is_active (w)))
		1522	return;
		1523
		1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1525	ev_stop (EV_A_ (W)w);
		1526	}
		1527
		1528	void
		1529	ev_check_start (EV_P_ struct ev_check *w)
		1530	{
		1531	if (expect_false (ev_is_active (w)))
		1532	return;
		1533
		1534	ev_start (EV_A_ (W)w, ++checkcnt);
		1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1536	checks [checkcnt - 1] = w;
		1537	}
		1538
		1539	void
		1540	ev_check_stop (EV_P_ struct ev_check *w)
		1541	{
		1542	ev_clear_pending (EV_A_ (W)w);
		1543	if (expect_false (!ev_is_active (w)))
		1544	return;
		1545
		1546	checks [((W)w)->active - 1] = checks [--checkcnt];
		1547	ev_stop (EV_A_ (W)w);
		1548	}
		1549
		1550	#ifndef SA_RESTART
		1551	# define SA_RESTART 0
		1552	#endif
		1553
		1554	void
1003	ev_signal_start (struct ev_signal *w)	1555	ev_signal_start (EV_P_ struct ev_signal *w)
1004	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1559	#endif
1005	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1006	return;	1561	return;
1007		1562
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1564
1010	ev_start ((W)w, 1);	1565	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1568
1014	if (!w->next)	1569	if (!((WL)w)->next)
1015	{	1570	{
		1571	#if _WIN32
		1572	signal (w->signum, sighandler);
		1573	#else
1016	struct sigaction sa;	1574	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1575	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1576	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1578	sigaction (w->signum, &sa, 0);
		1579	#endif
1021	}	1580	}
1022	}	1581	}
1023		1582
1024	void	1583	void
1025	ev_signal_stop (struct ev_signal *w)	1584	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1585	{
1027	ev_clear_pending ((W)w);	1586	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1587	if (expect_false (!ev_is_active (w)))
1029	return;	1588	return;
1030		1589
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1591	ev_stop (EV_A_ (W)w);
1033		1592
1034	if (!signals [w->signum - 1].head)	1593	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1594	signal (w->signum, SIG_DFL);
1036	}	1595	}
1037		1596
1038	void	1597	void
1039	ev_idle_start (struct ev_idle *w)
1040	{
1041	if (ev_is_active (w))
1042	return;
1043
1044	ev_start ((W)w, ++idlecnt);
1045	array_needsize (idles, idlemax, idlecnt, );
1046	idles [idlecnt - 1] = w;
1047	}
1048
1049	void
1050	ev_idle_stop (struct ev_idle *w)
1051	{
1052	ev_clear_pending ((W)w);
1053	if (ev_is_active (w))
1054	return;
1055
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)	1598	ev_child_start (EV_P_ struct ev_child *w)
1106	{	1599	{
		1600	#if EV_MULTIPLICITY
		1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1602	#endif
1107	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1108	return;	1604	return;
1109		1605
1110	ev_start ((W)w, 1);	1606	ev_start (EV_A_ (W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}	1608	}
1113		1609
1114	void	1610	void
1115	ev_child_stop (struct ev_child *w)	1611	ev_child_stop (EV_P_ struct ev_child *w)
1116	{	1612	{
1117	ev_clear_pending ((W)w);	1613	ev_clear_pending (EV_A_ (W)w);
1118	if (ev_is_active (w))	1614	if (expect_false (!ev_is_active (w)))
1119	return;	1615	return;
1120		1616
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1618	ev_stop (EV_A_ (W)w);
1123	}	1619	}
1124		1620
1125	/*****************************************************************************/	1621	/*****************************************************************************/
1126		1622
1127	struct ev_once	1623	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1627	void (cb)(int revents, void arg);
1132	void *arg;	1628	void *arg;
1133	};	1629	};
1134		1630
1135	static void	1631	static void
1136	once_cb (struct ev_once *once, int revents)	1632	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1633	{
1138	void (cb)(int revents, void arg) = once->cb;	1634	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1635	void *arg = once->arg;
1140		1636
1141	ev_io_stop (&once->io);	1637	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1638	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1639	ev_free (once);
1144		1640
1145	cb (revents, arg);	1641	cb (revents, arg);
1146	}	1642	}
1147		1643
1148	static void	1644	static void
1149	once_cb_io (struct ev_io *w, int revents)	1645	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1646	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1647	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1648	}
1153		1649
1154	static void	1650	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1652	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1653	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1654	}
1159		1655
1160	void	1656	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1657	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1658	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1659	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1164		1660
1165	if (!once)	1661	if (expect_false (!once))
		1662	{
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1663	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1167	else	1664	return;
1168	{	1665	}
		1666
1169	once->cb = cb;	1667	once->cb = cb;
1170	once->arg = arg;	1668	once->arg = arg;
1171		1669
1172	ev_watcher_init (&once->io, once_cb_io);	1670	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1671	if (fd >= 0)
1174	{	1672	{
1175	ev_io_set (&once->io, fd, events);	1673	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1674	ev_io_start (EV_A_ &once->io);
1177	}	1675	}
1178		1676
1179	ev_watcher_init (&once->to, once_cb_to);	1677	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1678	if (timeout >= 0.)
1181	{	1679	{
1182	ev_timer_set (&once->to, timeout, 0.);	1680	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1681	ev_timer_start (EV_A_ &once->to);
1184	}
1185	}
1186	}
1187
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{	1682	}
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}	1683	}
1265		1684
		1685	#ifdef __cplusplus
		1686	}
1266	#endif	1687	#endif
1267		1688
1268
1269
1270

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Comparing libev/ev.c (file contents): Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs. Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC