[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 1.122 by root, Sat Nov 17 02:00:48 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	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
33	#endif	68	#endif
34		69
35	#include <math.h>	70	#include <math.h>
36	#include <stdlib.h>	71	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	72	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	73	#include <stddef.h>
41		74
42	#include <stdio.h>	75	#include <stdio.h>
43		76
44	#include <assert.h>	77	#include <assert.h>
45	#include <errno.h>	78	#include <errno.h>
46	#include <sys/types.h>	79	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	80	#include <time.h>
50		81
		82	#include <signal.h>
		83
		84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
		87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
		93	# endif
		94	#endif
		95
51	/**/	96	/**/
52		97
53	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
55	#endif	104	#endif
56		105
57	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
59	#endif	108	#endif
60		109
61	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
63	#endif	116	#endif
64		117
65	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
67	#endif	120	#endif
68		121
69	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
71	#endif	124	#endif
72		125
73	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
74	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
75	#endif	128	#endif
76		129
77	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
78		137
79	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
80	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
82	#endif	141	#endif
…		…
84	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
85	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
86	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
87	#endif	146	#endif
88		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
89	/**/	152	/**/
90		153
91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#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) */	155	#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 */	156	#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 */	157	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
95		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
96	#include "ev.h"	162	# include "ev.h"
		163	#endif
97		164
98	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	167	# define inline inline
101	#else	168	#else
…		…
107	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
108		175
109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
111		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
112	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
115		185
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		187
		188	#ifdef _WIN32
		189	# include "ev_win32.c"
		190	#endif
		191
		192	/*****************************************************************************/
		193
		194	static void (syserr_cb)(const char msg);
		195
		196	void ev_set_syserr_cb (void (cb)(const char msg))
		197	{
		198	syserr_cb = cb;
		199	}
		200
		201	static void
		202	syserr (const char *msg)
		203	{
		204	if (!msg)
		205	msg = "(libev) system error";
		206
		207	if (syserr_cb)
		208	syserr_cb (msg);
		209	else
		210	{
		211	perror (msg);
		212	abort ();
		213	}
		214	}
		215
		216	static void (alloc)(void *ptr, long size);
		217
		218	void ev_set_allocator (void (cb)(void *ptr, long size))
		219	{
		220	alloc = cb;
		221	}
		222
		223	static void *
		224	ev_realloc (void *ptr, long size)
		225	{
		226	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		227
		228	if (!ptr && size)
		229	{
		230	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		231	abort ();
		232	}
		233
		234	return ptr;
		235	}
		236
		237	#define ev_malloc(size) ev_realloc (0, (size))
		238	#define ev_free(ptr) ev_realloc ((ptr), 0)
		239
		240	/*****************************************************************************/
		241
		242	typedef struct
		243	{
		244	WL head;
		245	unsigned char events;
		246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
		250	} ANFD;
		251
		252	typedef struct
		253	{
		254	W w;
		255	int events;
		256	} ANPENDING;
		257
		258	#if EV_MULTIPLICITY
		259
		260	struct ev_loop
		261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
		264	#define VAR(name,decl) decl;
		265	#include "ev_vars.h"
		266	#undef VAR
		267	};
		268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
		272
		273	#else
		274
117	ev_tstamp ev_now;	275	ev_tstamp ev_rt_now;
118	int ev_method;	276	#define VAR(name,decl) static decl;
		277	#include "ev_vars.h"
		278	#undef VAR
119		279
120	static int have_monotonic; /* runtime */	280	static int ev_default_loop_ptr;
121		281
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	282	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		283
126	/*****************************************************************************/	284	/*****************************************************************************/
127		285
128	ev_tstamp	286	ev_tstamp
129	ev_time (void)	287	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	295	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	296	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	297	#endif
140	}	298	}
141		299
142	static ev_tstamp	300	inline ev_tstamp
143	get_clock (void)	301	get_clock (void)
144	{	302	{
145	#if EV_USE_MONOTONIC	303	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	304	if (expect_true (have_monotonic))
147	{	305	{
…		…
152	#endif	310	#endif
153		311
154	return ev_time ();	312	return ev_time ();
155	}	313	}
156		314
		315	#if EV_MULTIPLICITY
		316	ev_tstamp
		317	ev_now (EV_P)
		318	{
		319	return ev_rt_now;
		320	}
		321	#endif
		322
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
158		324
159	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
161	{ \	327	{ \
162	int newcnt = cur; \	328	int newcnt = cur; \
163	do \	329	do \
164	{ \	330	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	332	} \
167	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
168	\	334	\
169	base = realloc (base, sizeof (base) (newcnt)); \	335	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
170	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	337	cur = newcnt; \
172	}	338	}
		339
		340	#define array_slim(type,stem) \
		341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		342	{ \
		343	stem ## max = array_roundsize (stem ## cnt >> 1); \
		344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		346	}
		347
		348	#define array_free(stem, idx) \
		349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
173		350
174	/*****************************************************************************/	351	/*****************************************************************************/
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		352
186	static void	353	static void
187	anfds_init (ANFD *base, int count)	354	anfds_init (ANFD *base, int count)
188	{	355	{
189	while (count--)	356	while (count--)
…		…
194		361
195	++base;	362	++base;
196	}	363	}
197	}	364	}
198		365
199	typedef struct	366	void
		367	ev_feed_event (EV_P_ void *w, int revents)
200	{	368	{
201	W w;	369	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		370
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void
209	event (W w, int events)
210	{
211	if (w->pending)	371	if (w_->pending)
212	{	372	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
214	return;	374	return;
215	}	375	}
216		376
217	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	381	}
222		382
223	static void	383	static void
224	queue_events (W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	385	{
226	int i;	386	int i;
227		387
228	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
230	}	390	}
231		391
232	static void	392	inline void
233	fd_event (int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
234	{	394	{
235	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	396	struct ev_io *w;
237		397
238	for (w = anfd->head; w; w = w->next)	398	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	399	{
240	int ev = w->events & events;	400	int ev = w->events & revents;
241		401
242	if (ev)	402	if (ev)
243	event ((W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
244	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
245	}	411	}
246		412
247	/*****************************************************************************/	413	/*****************************************************************************/
248		414
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	415	static void
253	fd_reify (void)	416	fd_reify (EV_P)
254	{	417	{
255	int i;	418	int i;
256		419
257	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
258	{	421	{
…		…
260	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	424	struct ev_io *w;
262		425
263	int events = 0;	426	int events = 0;
264		427
265	for (w = anfd->head; w; w = w->next)	428	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	429	events \|= w->events;
267		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
268	anfd->reify = 0;	440	anfd->reify = 0;
269		441
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	443	anfd->events = events;
274	}
275	}	444	}
276		445
277	fdchangecnt = 0;	446	fdchangecnt = 0;
278	}	447	}
279		448
280	static void	449	static void
281	fd_change (int fd)	450	fd_change (EV_P_ int fd)
282	{	451	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	452	if (anfds [fd].reify)
284	return;	453	return;
285		454
286	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
287		456
288	++fdchangecnt;	457	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
290	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
291	}	460	}
292		461
293	static void	462	static void
294	fd_kill (int fd)	463	fd_kill (EV_P_ int fd)
295	{	464	{
296	struct ev_io *w;	465	struct ev_io *w;
297		466
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
300	{	468	{
301	ev_io_stop (w);	469	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	470	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	471	}
		472	}
		473
		474	static int
		475	fd_valid (int fd)
		476	{
		477	#ifdef _WIN32
		478	return _get_osfhandle (fd) != -1;
		479	#else
		480	return fcntl (fd, F_GETFD) != -1;
		481	#endif
304	}	482	}
305		483
306	/* called on EBADF to verify fds */	484	/* called on EBADF to verify fds */
307	static void	485	static void
308	fd_ebadf (void)	486	fd_ebadf (EV_P)
309	{	487	{
310	int fd;	488	int fd;
311		489
312	for (fd = 0; fd < anfdmax; ++fd)	490	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	491	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	492	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	493	fd_kill (EV_A_ fd);
316	}	494	}
317		495
318	/* called on ENOMEM in select/poll to kill some fds and retry */	496	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	497	static void
320	fd_enomem (void)	498	fd_enomem (EV_P)
321	{	499	{
322	int fd = anfdmax;	500	int fd;
323		501
324	while (fd--)	502	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	503	if (anfds [fd].events)
326	{	504	{
327	close (fd);
328	fd_kill (fd);	505	fd_kill (EV_A_ fd);
329	return;	506	return;
330	}	507	}
331	}	508	}
332		509
		510	/* usually called after fork if method needs to re-arm all fds from scratch */
		511	static void
		512	fd_rearm_all (EV_P)
		513	{
		514	int fd;
		515
		516	/* this should be highly optimised to not do anything but set a flag */
		517	for (fd = 0; fd < anfdmax; ++fd)
		518	if (anfds [fd].events)
		519	{
		520	anfds [fd].events = 0;
		521	fd_change (EV_A_ fd);
		522	}
		523	}
		524
333	/*****************************************************************************/	525	/*****************************************************************************/
334		526
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	527	static void
342	upheap (WT *timers, int k)	528	upheap (WT *heap, int k)
343	{	529	{
344	WT w = timers [k];	530	WT w = heap [k];
345		531
346	while (k && timers [k >> 1]->at > w->at)	532	while (k && heap [k >> 1]->at > w->at)
347	{	533	{
348	timers [k] = timers [k >> 1];	534	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
350	k >>= 1;	536	k >>= 1;
351	}	537	}
352		538
353	timers [k] = w;	539	heap [k] = w;
354	timers [k]->active = k + 1;	540	((W)heap [k])->active = k + 1;
355		541
356	}	542	}
357		543
358	static void	544	static void
359	downheap (WT *timers, int N, int k)	545	downheap (WT *heap, int N, int k)
360	{	546	{
361	WT w = timers [k];	547	WT w = heap [k];
362		548
363	while (k < (N >> 1))	549	while (k < (N >> 1))
364	{	550	{
365	int j = k << 1;	551	int j = k << 1;
366		552
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	553	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	554	++j;
369		555
370	if (w->at <= timers [j]->at)	556	if (w->at <= heap [j]->at)
371	break;	557	break;
372		558
373	timers [k] = timers [j];	559	heap [k] = heap [j];
374	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
375	k = j;	561	k = j;
376	}	562	}
377		563
378	timers [k] = w;	564	heap [k] = w;
379	timers [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
		566	}
		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
380	}	573	}
381		574
382	/*****************************************************************************/	575	/*****************************************************************************/
383		576
384	typedef struct	577	typedef struct
385	{	578	{
386	struct ev_signal *head;	579	WL head;
387	sig_atomic_t volatile gotsig;	580	sig_atomic_t volatile gotsig;
388	} ANSIG;	581	} ANSIG;
389		582
390	static ANSIG *signals;	583	static ANSIG *signals;
391	static int signalmax;	584	static int signalmax;
…		…
407	}	600	}
408		601
409	static void	602	static void
410	sighandler (int signum)	603	sighandler (int signum)
411	{	604	{
		605	#if _WIN32
		606	signal (signum, sighandler);
		607	#endif
		608
412	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
413		610
414	if (!gotsig)	611	if (!gotsig)
415	{	612	{
		613	int old_errno = errno;
416	gotsig = 1;	614	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
		616	errno = old_errno;
418	}	617	}
419	}	618	}
420		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 \|\| signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
421	static void	640	static void
422	sigcb (struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	642	{
424	struct ev_signal *w;
425	int signum;	643	int signum;
426		644
427	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	646	gotsig = 0;
429		647
430	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
432	{	650	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	}	651	}
439		652
440	static void	653	inline void
441	siginit (void)	654	fd_intern (int fd)
442	{	655	{
		656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	660	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);	661	fcntl (fd, F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	662	#endif
		663	}
		664
		665	static void
		666	siginit (EV_P)
		667	{
		668	fd_intern (sigpipe [0]);
		669	fd_intern (sigpipe [1]);
449		670
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	672	ev_io_start (EV_A_ &sigev);
		673	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	674	}
453		675
454	/*****************************************************************************/	676	/*****************************************************************************/
455		677
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];	678	static struct ev_child *childs [PID_HASHSIZE];
		679
		680	#ifndef _WIN32
		681
468	static struct ev_signal childev;	682	static struct ev_signal childev;
469		683
470	#ifndef WCONTINUED	684	#ifndef WCONTINUED
471	# define WCONTINUED 0	685	# define WCONTINUED 0
472	#endif	686	#endif
473		687
474	static void	688	static void
475	childcb (struct ev_signal *sw, int revents)	689	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	690	{
477	struct ev_child *w;	691	struct ev_child *w;
		692
		693	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		694	if (w->pid == pid \|\| !w->pid)
		695	{
		696	ev_priority (w) = ev_priority (sw); /* need to do it now */
		697	w->rpid = pid;
		698	w->rstatus = status;
		699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		700	}
		701	}
		702
		703	static void
		704	childcb (EV_P_ struct ev_signal *sw, int revents)
		705	{
478	int pid, status;	706	int pid, status;
479		707
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	709	{
482	if (w->pid == pid \|\| !w->pid)	710	/* make sure we are called again until all childs have been reaped */
483	{	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	712
485	event ((W)w, EV_CHILD);	713	child_reap (EV_A_ sw, pid, pid, status);
486	}	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		715	}
487	}	716	}
		717
		718	#endif
488		719
489	/*****************************************************************************/	720	/*****************************************************************************/
490		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
491	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
493	#endif	727	#endif
494	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
495	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
511	ev_version_minor (void)	745	ev_version_minor (void)
512	{	746	{
513	return EV_VERSION_MINOR;	747	return EV_VERSION_MINOR;
514	}	748	}
515		749
516	/* return true if we are running with elevated privileges and ignore env variables */	750	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	751	static int
518	enable_secure ()	752	enable_secure (void)
519	{	753	{
		754	#ifdef _WIN32
		755	return 0;
		756	#else
520	return getuid () != geteuid ()	757	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	758	\|\| getgid () != getegid ();
		759	#endif
522	}	760	}
523		761
524	int ev_init (int methods)	762	unsigned int
		763	ev_method (EV_P)
525	{	764	{
		765	return method;
		766	}
		767
		768	static void
		769	loop_init (EV_P_ unsigned int flags)
		770	{
526	if (!ev_method)	771	if (!method)
527	{	772	{
528	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
529	{	774	{
530	struct timespec ts;	775	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	777	have_monotonic = 1;
533	}	778	}
534	#endif	779	#endif
535		780
536	ev_now = ev_time ();	781	ev_rt_now = ev_time ();
537	now = get_clock ();	782	mn_now = get_clock ();
538	now_floor = now;	783	now_floor = mn_now;
539	diff = ev_now - now;	784	rtmn_diff = ev_rt_now - mn_now;
540		785
541	if (pipe (sigpipe))	786	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"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		788
		789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
		791
550	ev_method = 0;	792	method = 0;
		793	#if EV_USE_PORT
		794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		795	#endif
551	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
553	#endif	798	#endif
554	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
556	#endif	801	#endif
557	#if EV_USE_POLL	802	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
559	#endif	804	#endif
560	#if EV_USE_SELECT	805	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
562	#endif	807	#endif
563		808
		809	ev_init (&sigev, sigcb);
		810	ev_set_priority (&sigev, EV_MAXPRI);
		811	}
		812	}
		813
		814	void
		815	loop_destroy (EV_P)
		816	{
		817	int i;
		818
		819	#if EV_USE_PORT
		820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		821	#endif
		822	#if EV_USE_KQUEUE
		823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		824	#endif
		825	#if EV_USE_EPOLL
		826	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		827	#endif
		828	#if EV_USE_POLL
		829	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		830	#endif
		831	#if EV_USE_SELECT
		832	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		833	#endif
		834
		835	for (i = NUMPRI; i--; )
		836	array_free (pending, [i]);
		837
		838	/* have to use the microsoft-never-gets-it-right macro */
		839	array_free (fdchange, EMPTY0);
		840	array_free (timer, EMPTY0);
		841	#if EV_PERIODICS
		842	array_free (periodic, EMPTY0);
		843	#endif
		844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
		847
		848	method = 0;
		849	}
		850
		851	static void
		852	loop_fork (EV_P)
		853	{
		854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
		860	#if EV_USE_EPOLL
		861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		862	#endif
		863
		864	if (ev_is_active (&sigev))
		865	{
		866	/* default loop */
		867
		868	ev_ref (EV_A);
		869	ev_io_stop (EV_A_ &sigev);
		870	close (sigpipe [0]);
		871	close (sigpipe [1]);
		872
		873	while (pipe (sigpipe))
		874	syserr ("(libev) error creating pipe");
		875
		876	siginit (EV_A);
		877	}
		878
		879	postfork = 0;
		880	}
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	ev_loop_new (unsigned int flags)
		885	{
		886	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		887
		888	memset (loop, 0, sizeof (struct ev_loop));
		889
		890	loop_init (EV_A_ flags);
		891
		892	if (ev_method (EV_A))
		893	return loop;
		894
		895	return 0;
		896	}
		897
		898	void
		899	ev_loop_destroy (EV_P)
		900	{
		901	loop_destroy (EV_A);
		902	ev_free (loop);
		903	}
		904
		905	void
		906	ev_loop_fork (EV_P)
		907	{
		908	postfork = 1;
		909	}
		910
		911	#endif
		912
		913	#if EV_MULTIPLICITY
		914	struct ev_loop *
		915	ev_default_loop_ (unsigned int flags)
		916	#else
		917	int
		918	ev_default_loop (unsigned int flags)
		919	#endif
		920	{
		921	if (sigpipe [0] == sigpipe [1])
		922	if (pipe (sigpipe))
		923	return 0;
		924
		925	if (!ev_default_loop_ptr)
		926	{
		927	#if EV_MULTIPLICITY
		928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		929	#else
		930	ev_default_loop_ptr = 1;
		931	#endif
		932
		933	loop_init (EV_A_ flags);
		934
564	if (ev_method)	935	if (ev_method (EV_A))
565	{	936	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	937	siginit (EV_A);
568		938
		939	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
		941	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	942	ev_signal_start (EV_A_ &childev);
		943	ev_unref (EV_A); /* child watcher should not keep loop alive */
		944	#endif
571	}	945	}
		946	else
		947	ev_default_loop_ptr = 0;
572	}	948	}
573		949
574	return ev_method;	950	return ev_default_loop_ptr;
		951	}
		952
		953	void
		954	ev_default_destroy (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = ev_default_loop_ptr;
		958	#endif
		959
		960	#ifndef _WIN32
		961	ev_ref (EV_A); /* child watcher */
		962	ev_signal_stop (EV_A_ &childev);
		963	#endif
		964
		965	ev_ref (EV_A); /* signal watcher */
		966	ev_io_stop (EV_A_ &sigev);
		967
		968	close (sigpipe [0]); sigpipe [0] = 0;
		969	close (sigpipe [1]); sigpipe [1] = 0;
		970
		971	loop_destroy (EV_A);
		972	}
		973
		974	void
		975	ev_default_fork (void)
		976	{
		977	#if EV_MULTIPLICITY
		978	struct ev_loop *loop = ev_default_loop_ptr;
		979	#endif
		980
		981	if (method)
		982	postfork = 1;
575	}	983	}
576		984
577	/*****************************************************************************/	985	/*****************************************************************************/
578		986
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	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
609	call_pending (void)	1000	call_pending (EV_P)
610	{	1001	{
611	int pri;	1002	int pri;
612		1003
613	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
615	{	1006	{
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		1008
618	if (p->w)	1009	if (expect_true (p->w))
619	{	1010	{
620	p->w->pending = 0;	1011	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
622	}	1013	}
623	}	1014	}
624	}	1015	}
625		1016
626	static void	1017	static void
627	timers_reify (void)	1018	timers_reify (EV_P)
628	{	1019	{
629	while (timercnt && timers [0]->at <= now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1021	{
631	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
		1023
		1024	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		1025
633	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
634	if (w->repeat)	1027	if (w->repeat)
635	{	1028	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
637	w->at = now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
638	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
639	}	1036	}
640	else	1037	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1039
643	event ((W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1041	}
645	}	1042	}
646		1043
		1044	#if EV_PERIODICS
647	static void	1045	static void
648	periodics_reify (void)	1046	periodics_reify (EV_P)
649	{	1047	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1049	{
652	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
653		1051
		1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1053
654	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
655	if (w->interval)	1055	if (w->reschedule_cb)
656	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1063	((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));	1064	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);	1065	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1066	}
661	else	1067	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1069
664	event ((W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1071	}
666	}	1072	}
667		1073
668	static void	1074	static void
669	periodics_reschedule (ev_tstamp diff)	1075	periodics_reschedule (EV_P)
670	{	1076	{
671	int i;	1077	int i;
672		1078
673	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
675	{	1081	{
676	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
677		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1086	else if (w->interval)
679	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1087	((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	}	1088	}
691	}
692		1089
693	static int	1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
		1093	}
		1094	#endif
		1095
		1096	inline int
694	time_update_monotonic (void)	1097	time_update_monotonic (EV_P)
695	{	1098	{
696	now = get_clock ();	1099	mn_now = get_clock ();
697		1100
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1102	{
700	ev_now = now + diff;	1103	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1104	return 0;
702	}	1105	}
703	else	1106	else
704	{	1107	{
705	now_floor = now;	1108	now_floor = mn_now;
706	ev_now = ev_time ();	1109	ev_rt_now = ev_time ();
707	return 1;	1110	return 1;
708	}	1111	}
709	}	1112	}
710		1113
711	static void	1114	static void
712	time_update (void)	1115	time_update (EV_P)
713	{	1116	{
714	int i;	1117	int i;
715		1118
716	#if EV_USE_MONOTONIC	1119	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1120	if (expect_true (have_monotonic))
718	{	1121	{
719	if (time_update_monotonic ())	1122	if (time_update_monotonic (EV_A))
720	{	1123	{
721	ev_tstamp odiff = diff;	1124	ev_tstamp odiff = rtmn_diff;
722		1125
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	1127	{
725	diff = ev_now - now;	1128	rtmn_diff = ev_rt_now - mn_now;
726		1129
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1131	return; /* all is well */
729		1132
730	ev_now = ev_time ();	1133	ev_rt_now = ev_time ();
731	now = get_clock ();	1134	mn_now = get_clock ();
732	now_floor = now;	1135	now_floor = mn_now;
733	}	1136	}
734		1137
		1138	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1139	periodics_reschedule (EV_A);
		1140	# endif
736	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
		1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	1143	}
738	}	1144	}
739	else	1145	else
740	#endif	1146	#endif
741	{	1147	{
742	ev_now = ev_time ();	1148	ev_rt_now = ev_time ();
743		1149
744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1150	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	1151	{
		1152	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1153	periodics_reschedule (EV_A);
		1154	#endif
747		1155
748	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1159	}
752		1160
753	now = ev_now;	1161	mn_now = ev_rt_now;
754	}	1162	}
755	}	1163	}
756		1164
757	int ev_loop_done;	1165	void
		1166	ev_ref (EV_P)
		1167	{
		1168	++activecnt;
		1169	}
758		1170
		1171	void
		1172	ev_unref (EV_P)
		1173	{
		1174	--activecnt;
		1175	}
		1176
		1177	static int loop_done;
		1178
		1179	void
759	void ev_loop (int flags)	1180	ev_loop (EV_P_ int flags)
760	{	1181	{
761	double block;	1182	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		1184
764	do	1185	while (activecnt)
765	{	1186	{
766	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
768	{	1189	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1191	call_pending (EV_A);
771	}	1192	}
772		1193
		1194	/* we might have forked, so reify kernel state if necessary */
		1195	if (expect_false (postfork))
		1196	loop_fork (EV_A);
		1197
773	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
774	fd_reify ();	1199	fd_reify (EV_A);
775		1200
776	/* calculate blocking time */	1201	/* calculate blocking time */
777		1202
778	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
779	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1207	time_update_monotonic (EV_A);
783	else	1208	else
784	#endif	1209	#endif
785	{	1210	{
786	ev_now = ev_time ();	1211	ev_rt_now = ev_time ();
787	now = ev_now;	1212	mn_now = ev_rt_now;
788	}	1213	}
789		1214
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1216	block = 0.;
792	else	1217	else
793	{	1218	{
794	block = MAX_BLOCKTIME;	1219	block = MAX_BLOCKTIME;
795		1220
796	if (timercnt)	1221	if (timercnt)
797	{	1222	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1224	if (block > to) block = to;
800	}	1225	}
801		1226
		1227	#if EV_PERIODICS
802	if (periodiccnt)	1228	if (periodiccnt)
803	{	1229	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
805	if (block > to) block = to;	1231	if (block > to) block = to;
806	}	1232	}
		1233	#endif
807		1234
808	if (block < 0.) block = 0.;	1235	if (block < 0.) block = 0.;
809	}	1236	}
810		1237
811	method_poll (block);	1238	method_poll (EV_A_ block);
812		1239
813	/* update ev_now, do magic */	1240	/* update ev_rt_now, do magic */
814	time_update ();	1241	time_update (EV_A);
815		1242
816	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
819		1248
820	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1252
824	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
825	if (checkcnt)	1254	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1256
828	call_pending ();	1257	call_pending (EV_A);
829	}
830	while (!ev_loop_done);
831		1258
		1259	if (loop_done)
		1260	break;
		1261	}
		1262
832	if (ev_loop_done != 2)	1263	if (loop_done != 2)
833	ev_loop_done = 0;	1264	loop_done = 0;
		1265	}
		1266
		1267	void
		1268	ev_unloop (EV_P_ int how)
		1269	{
		1270	loop_done = how;
834	}	1271	}
835		1272
836	/*****************************************************************************/	1273	/*****************************************************************************/
837		1274
838	static void	1275	inline void
839	wlist_add (WL *head, WL elem)	1276	wlist_add (WL *head, WL elem)
840	{	1277	{
841	elem->next = *head;	1278	elem->next = *head;
842	*head = elem;	1279	*head = elem;
843	}	1280	}
844		1281
845	static void	1282	inline void
846	wlist_del (WL *head, WL elem)	1283	wlist_del (WL *head, WL elem)
847	{	1284	{
848	while (*head)	1285	while (*head)
849	{	1286	{
850	if (*head == elem)	1287	if (*head == elem)
…		…
855		1292
856	head = &(*head)->next;	1293	head = &(*head)->next;
857	}	1294	}
858	}	1295	}
859		1296
860	static void	1297	inline void
861	ev_clear_pending (W w)	1298	ev_clear_pending (EV_P_ W w)
862	{	1299	{
863	if (w->pending)	1300	if (w->pending)
864	{	1301	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1302	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1303	w->pending = 0;
867	}	1304	}
868	}	1305	}
869		1306
870	static void	1307	inline void
871	ev_start (W w, int active)	1308	ev_start (EV_P_ W w, int active)
872	{	1309	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1310	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1311	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1312
876	w->active = active;	1313	w->active = active;
		1314	ev_ref (EV_A);
877	}	1315	}
878		1316
879	static void	1317	inline void
880	ev_stop (W w)	1318	ev_stop (EV_P_ W w)
881	{	1319	{
		1320	ev_unref (EV_A);
882	w->active = 0;	1321	w->active = 0;
883	}	1322	}
884		1323
885	/*****************************************************************************/	1324	/*****************************************************************************/
886		1325
887	void	1326	void
888	ev_io_start (struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
889	{	1328	{
890	int fd = w->fd;	1329	int fd = w->fd;
891		1330
892	if (ev_is_active (w))	1331	if (ev_is_active (w))
893	return;	1332	return;
894		1333
895	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
896		1335
897	ev_start ((W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1339
901	fd_change (fd);	1340	fd_change (EV_A_ fd);
902	}	1341	}
903		1342
904	void	1343	void
905	ev_io_stop (struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1345	{
907	ev_clear_pending ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
909	return;	1348	return;
910		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1351
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
913		1354
914	fd_change (w->fd);	1355	fd_change (EV_A_ w->fd);
915	}	1356	}
916		1357
917	void	1358	void
918	ev_timer_start (struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1360	{
920	if (ev_is_active (w))	1361	if (ev_is_active (w))
921	return;	1362	return;
922		1363
923	w->at += now;	1364	((WT)w)->at += mn_now;
924		1365
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1367
927	ev_start ((W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
929	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
931	}
932		1372
		1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1374	}
		1375
933	void	1376	void
934	ev_timer_stop (struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1378	{
936	ev_clear_pending ((W)w);	1379	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1380	if (!ev_is_active (w))
938	return;	1381	return;
939		1382
		1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1384
940	if (w->active < timercnt--)	1385	if (((W)w)->active < timercnt--)
941	{	1386	{
942	timers [w->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1389	}
945		1390
946	w->at = w->repeat;	1391	((WT)w)->at -= mn_now;
947		1392
948	ev_stop ((W)w);	1393	ev_stop (EV_A_ (W)w);
949	}	1394	}
950		1395
951	void	1396	void
952	ev_timer_again (struct ev_timer *w)	1397	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1398	{
954	if (ev_is_active (w))	1399	if (ev_is_active (w))
955	{	1400	{
956	if (w->repeat)	1401	if (w->repeat)
957	{	1402	{
958	w->at = now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1405	}
961	else	1406	else
962	ev_timer_stop (w);	1407	ev_timer_stop (EV_A_ w);
963	}	1408	}
964	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
965	ev_timer_start (w);	1412	ev_timer_start (EV_A_ w);
		1413	}
966	}	1414	}
967		1415
		1416	#if EV_PERIODICS
968	void	1417	void
969	ev_periodic_start (struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1419	{
971	if (ev_is_active (w))	1420	if (ev_is_active (w))
972	return;	1421	return;
973		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	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 */	1428	/* 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;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
979		1431
980	ev_start ((W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
982	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1436
		1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1438	}
		1439
986	void	1440	void
987	ev_periodic_stop (struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1442	{
989	ev_clear_pending ((W)w);	1443	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1444	if (!ev_is_active (w))
991	return;	1445	return;
992		1446
		1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1448
993	if (w->active < periodiccnt--)	1449	if (((W)w)->active < periodiccnt--)
994	{	1450	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1453	}
998		1454
999	ev_stop ((W)w);	1455	ev_stop (EV_A_ (W)w);
1000	}	1456	}
1001		1457
1002	void	1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
1003	ev_signal_start (struct ev_signal *w)	1468	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1469	{
1005	if (ev_is_active (w))	1470	if (ev_is_active (w))
1006	return;	1471	return;
1007		1472
		1473	ev_start (EV_A_ (W)w, ++idlecnt);
		1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1475	idles [idlecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_idle_stop (EV_P_ struct ev_idle *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (!ev_is_active (w))
		1483	return;
		1484
		1485	idles [((W)w)->active - 1] = idles [--idlecnt];
		1486	ev_stop (EV_A_ (W)w);
		1487	}
		1488
		1489	void
		1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1491	{
		1492	if (ev_is_active (w))
		1493	return;
		1494
		1495	ev_start (EV_A_ (W)w, ++preparecnt);
		1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1497	prepares [preparecnt - 1] = w;
		1498	}
		1499
		1500	void
		1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1502	{
		1503	ev_clear_pending (EV_A_ (W)w);
		1504	if (!ev_is_active (w))
		1505	return;
		1506
		1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1508	ev_stop (EV_A_ (W)w);
		1509	}
		1510
		1511	void
		1512	ev_check_start (EV_P_ struct ev_check *w)
		1513	{
		1514	if (ev_is_active (w))
		1515	return;
		1516
		1517	ev_start (EV_A_ (W)w, ++checkcnt);
		1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1519	checks [checkcnt - 1] = w;
		1520	}
		1521
		1522	void
		1523	ev_check_stop (EV_P_ struct ev_check *w)
		1524	{
		1525	ev_clear_pending (EV_A_ (W)w);
		1526	if (!ev_is_active (w))
		1527	return;
		1528
		1529	checks [((W)w)->active - 1] = checks [--checkcnt];
		1530	ev_stop (EV_A_ (W)w);
		1531	}
		1532
		1533	#ifndef SA_RESTART
		1534	# define SA_RESTART 0
		1535	#endif
		1536
		1537	void
		1538	ev_signal_start (EV_P_ struct ev_signal *w)
		1539	{
		1540	#if EV_MULTIPLICITY
		1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1542	#endif
		1543	if (ev_is_active (w))
		1544	return;
		1545
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1547
1010	ev_start ((W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1551
1014	if (!w->next)	1552	if (!((WL)w)->next)
1015	{	1553	{
		1554	#if _WIN32
		1555	signal (w->signum, sighandler);
		1556	#else
1016	struct sigaction sa;	1557	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1560	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1561	sigaction (w->signum, &sa, 0);
		1562	#endif
1021	}	1563	}
1022	}	1564	}
1023		1565
1024	void	1566	void
1025	ev_signal_stop (struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1568	{
1027	ev_clear_pending ((W)w);	1569	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1570	if (!ev_is_active (w))
1029	return;	1571	return;
1030		1572
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1574	ev_stop (EV_A_ (W)w);
1033		1575
1034	if (!signals [w->signum - 1].head)	1576	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1577	signal (w->signum, SIG_DFL);
1036	}	1578	}
1037		1579
1038	void	1580	void
1039	ev_idle_start (struct ev_idle *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1582	{
		1583	#if EV_MULTIPLICITY
		1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1585	#endif
1041	if (ev_is_active (w))	1586	if (ev_is_active (w))
1042	return;	1587	return;
1043		1588
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)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}	1591	}
1113		1592
1114	void	1593	void
1115	ev_child_stop (struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1116	{	1595	{
1117	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1118	if (ev_is_active (w))	1597	if (!ev_is_active (w))
1119	return;	1598	return;
1120		1599
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
1123	}	1602	}
1124		1603
1125	/*****************************************************************************/	1604	/*****************************************************************************/
1126		1605
1127	struct ev_once	1606	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1610	void (cb)(int revents, void arg);
1132	void *arg;	1611	void *arg;
1133	};	1612	};
1134		1613
1135	static void	1614	static void
1136	once_cb (struct ev_once *once, int revents)	1615	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1616	{
1138	void (cb)(int revents, void arg) = once->cb;	1617	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1618	void *arg = once->arg;
1140		1619
1141	ev_io_stop (&once->io);	1620	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1621	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1622	ev_free (once);
1144		1623
1145	cb (revents, arg);	1624	cb (revents, arg);
1146	}	1625	}
1147		1626
1148	static void	1627	static void
1149	once_cb_io (struct ev_io *w, int revents)	1628	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1629	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1630	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1631	}
1153		1632
1154	static void	1633	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1634	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1635	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1636	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1637	}
1159		1638
1160	void	1639	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1641	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1164		1643
1165	if (!once)	1644	if (!once)
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1645	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1167	else	1646	else
1168	{	1647	{
1169	once->cb = cb;	1648	once->cb = cb;
1170	once->arg = arg;	1649	once->arg = arg;
1171		1650
1172	ev_watcher_init (&once->io, once_cb_io);	1651	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1652	if (fd >= 0)
1174	{	1653	{
1175	ev_io_set (&once->io, fd, events);	1654	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1655	ev_io_start (EV_A_ &once->io);
1177	}	1656	}
1178		1657
1179	ev_watcher_init (&once->to, once_cb_to);	1658	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1659	if (timeout >= 0.)
1181	{	1660	{
1182	ev_timer_set (&once->to, timeout, 0.);	1661	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1662	ev_timer_start (EV_A_ &once->to);
1184	}	1663	}
1185	}	1664	}
1186	}	1665	}
1187		1666
1188	/*****************************************************************************/	1667	#ifdef __cplusplus
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	}	1668	}
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	{
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	1669	#endif
1244		1670
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	}
1265
1266	#endif
1267
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 1.122 by root, Sat Nov 17 02:00:48 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 1.122 by root, Sat Nov 17 02:00:48 2007 UTC