[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 1.130 by root, Fri Nov 23 05:13:48 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	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	107	#include <time.h>
50		108
		109	#include <signal.h>
		110
		111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
		114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
		120	# endif
		121	#endif
		122
51	/**/	123	/**/
52		124
53	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
55	#endif	131	#endif
56		132
57	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
59	#endif	135	#endif
60		136
61	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
63	#endif	143	#endif
64		144
65	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
67	#endif	147	#endif
68		148
69	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
71	#endif	151	#endif
72		152
73	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
74	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
75	#endif	155	#endif
76		156
77	/**/	157	/**/
78		158
79	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
84	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
85	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
86	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
87	#endif	167	#endif
88		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
89	/**/	173	/**/
90		174
91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
94	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
95		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
96	#include "ev.h"	183	# include "ev.h"
		184	#endif
97		185
98	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	188	# define inline static inline
101	#else	189	#else
102	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
103	# define inline static	191	# define inline static
104	#endif	192	#endif
105		193
…		…
107	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
108		196
109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
111		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
112	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
115		206
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		208
		209	#ifdef _WIN32
		210	# include "ev_win32.c"
		211	#endif
		212
		213	/*****************************************************************************/
		214
		215	static void (syserr_cb)(const char msg);
		216
		217	void ev_set_syserr_cb (void (cb)(const char msg))
		218	{
		219	syserr_cb = cb;
		220	}
		221
		222	static void
		223	syserr (const char *msg)
		224	{
		225	if (!msg)
		226	msg = "(libev) system error";
		227
		228	if (syserr_cb)
		229	syserr_cb (msg);
		230	else
		231	{
		232	perror (msg);
		233	abort ();
		234	}
		235	}
		236
		237	static void (alloc)(void *ptr, long size);
		238
		239	void ev_set_allocator (void (cb)(void *ptr, long size))
		240	{
		241	alloc = cb;
		242	}
		243
		244	static void *
		245	ev_realloc (void *ptr, long size)
		246	{
		247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		248
		249	if (!ptr && size)
		250	{
		251	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		252	abort ();
		253	}
		254
		255	return ptr;
		256	}
		257
		258	#define ev_malloc(size) ev_realloc (0, (size))
		259	#define ev_free(ptr) ev_realloc ((ptr), 0)
		260
		261	/*****************************************************************************/
		262
		263	typedef struct
		264	{
		265	WL head;
		266	unsigned char events;
		267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
		271	} ANFD;
		272
		273	typedef struct
		274	{
		275	W w;
		276	int events;
		277	} ANPENDING;
		278
		279	#if EV_MULTIPLICITY
		280
		281	struct ev_loop
		282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
		285	#define VAR(name,decl) decl;
		286	#include "ev_vars.h"
		287	#undef VAR
		288	};
		289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
		293
		294	#else
		295
117	ev_tstamp ev_now;	296	ev_tstamp ev_rt_now;
118	int ev_method;	297	#define VAR(name,decl) static decl;
		298	#include "ev_vars.h"
		299	#undef VAR
119		300
120	static int have_monotonic; /* runtime */	301	static int ev_default_loop_ptr;
121		302
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	303	#endif
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		304
126	/*****************************************************************************/	305	/*****************************************************************************/
127		306
128	ev_tstamp	307	ev_tstamp
129	ev_time (void)	308	ev_time (void)
…		…
137	gettimeofday (&tv, 0);	316	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	317	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	318	#endif
140	}	319	}
141		320
142	static ev_tstamp	321	inline ev_tstamp
143	get_clock (void)	322	get_clock (void)
144	{	323	{
145	#if EV_USE_MONOTONIC	324	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	325	if (expect_true (have_monotonic))
147	{	326	{
…		…
152	#endif	331	#endif
153		332
154	return ev_time ();	333	return ev_time ();
155	}	334	}
156		335
		336	#if EV_MULTIPLICITY
		337	ev_tstamp
		338	ev_now (EV_P)
		339	{
		340	return ev_rt_now;
		341	}
		342	#endif
		343
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
158		345
159	#define array_needsize(base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
160	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
161	{ \	348	{ \
162	int newcnt = cur; \	349	int newcnt = cur; \
163	do \	350	do \
164	{ \	351	{ \
165	newcnt = array_roundsize (base, newcnt << 1); \	352	newcnt = array_roundsize (type, newcnt << 1); \
166	} \	353	} \
167	while ((cnt) > newcnt); \	354	while ((cnt) > newcnt); \
168	\	355	\
169	base = realloc (base, sizeof (base) (newcnt)); \	356	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
170	init (base + cur, newcnt - cur); \	357	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	358	cur = newcnt; \
172	}	359	}
		360
		361	#define array_slim(type,stem) \
		362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		363	{ \
		364	stem ## max = array_roundsize (stem ## cnt >> 1); \
		365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		367	}
		368
		369	#define array_free(stem, idx) \
		370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
173		371
174	/*****************************************************************************/	372	/*****************************************************************************/
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		373
186	static void	374	static void
187	anfds_init (ANFD *base, int count)	375	anfds_init (ANFD *base, int count)
188	{	376	{
189	while (count--)	377	while (count--)
…		…
194		382
195	++base;	383	++base;
196	}	384	}
197	}	385	}
198		386
199	typedef struct	387	void
		388	ev_feed_event (EV_P_ void *w, int revents)
200	{	389	{
201	W w;	390	W w_ = (W)w;
202	int events;
203	} ANPENDING;
204		391
205	static ANPENDING *pendings [NUMPRI];	392	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	{	393	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
214	return;	395	return;
215	}	396	}
216		397
217	w->pending = ++pendingcnt [ABSPRI (w)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
221	}	402	}
222		403
223	static void	404	static void
224	queue_events (W *events, int eventcnt, int type)	405	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	406	{
226	int i;	407	int i;
227		408
228	for (i = 0; i < eventcnt; ++i)	409	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	410	ev_feed_event (EV_A_ events [i], type);
230	}	411	}
231		412
232	static void	413	inline void
233	fd_event (int fd, int events)	414	fd_event (EV_P_ int fd, int revents)
234	{	415	{
235	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	417	struct ev_io *w;
237		418
238	for (w = anfd->head; w; w = w->next)	419	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	420	{
240	int ev = w->events & events;	421	int ev = w->events & revents;
241		422
242	if (ev)	423	if (ev)
243	event ((W)w, ev);	424	ev_feed_event (EV_A_ (W)w, ev);
244	}	425	}
		426	}
		427
		428	void
		429	ev_feed_fd_event (EV_P_ int fd, int revents)
		430	{
		431	fd_event (EV_A_ fd, revents);
245	}	432	}
246		433
247	/*****************************************************************************/	434	/*****************************************************************************/
248		435
249	static int *fdchanges;	436	inline void
250	static int fdchangemax, fdchangecnt;	437	fd_reify (EV_P)
251
252	static void
253	fd_reify (void)
254	{	438	{
255	int i;	439	int i;
256		440
257	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
258	{	442	{
…		…
260	ANFD *anfd = anfds + fd;	444	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	445	struct ev_io *w;
262		446
263	int events = 0;	447	int events = 0;
264		448
265	for (w = anfd->head; w; w = w->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	450	events \|= w->events;
267		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
268	anfd->reify = 0;	461	anfd->reify = 0;
269		462
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	464	anfd->events = events;
274	}
275	}	465	}
276		466
277	fdchangecnt = 0;	467	fdchangecnt = 0;
278	}	468	}
279		469
280	static void	470	static void
281	fd_change (int fd)	471	fd_change (EV_P_ int fd)
282	{	472	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	473	if (expect_false (anfds [fd].reify))
284	return;	474	return;
285		475
286	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
287		477
288	++fdchangecnt;	478	++fdchangecnt;
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
290	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
291	}	481	}
292		482
293	static void	483	static void
294	fd_kill (int fd)	484	fd_kill (EV_P_ int fd)
295	{	485	{
296	struct ev_io *w;	486	struct ev_io *w;
297		487
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	488	while ((w = (struct ev_io *)anfds [fd].head))
300	{	489	{
301	ev_io_stop (w);	490	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	492	}
		493	}
		494
		495	inline int
		496	fd_valid (int fd)
		497	{
		498	#ifdef _WIN32
		499	return _get_osfhandle (fd) != -1;
		500	#else
		501	return fcntl (fd, F_GETFD) != -1;
		502	#endif
304	}	503	}
305		504
306	/* called on EBADF to verify fds */	505	/* called on EBADF to verify fds */
307	static void	506	static void
308	fd_ebadf (void)	507	fd_ebadf (EV_P)
309	{	508	{
310	int fd;	509	int fd;
311		510
312	for (fd = 0; fd < anfdmax; ++fd)	511	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	512	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	513	if (!fd_valid (fd) == -1 && errno == EBADF)
315	fd_kill (fd);	514	fd_kill (EV_A_ fd);
316	}	515	}
317		516
318	/* called on ENOMEM in select/poll to kill some fds and retry */	517	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	518	static void
320	fd_enomem (void)	519	fd_enomem (EV_P)
321	{	520	{
322	int fd = anfdmax;	521	int fd;
323		522
324	while (fd--)	523	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	524	if (anfds [fd].events)
326	{	525	{
327	close (fd);
328	fd_kill (fd);	526	fd_kill (EV_A_ fd);
329	return;	527	return;
330	}	528	}
331	}	529	}
332		530
		531	/* usually called after fork if backend needs to re-arm all fds from scratch */
		532	static void
		533	fd_rearm_all (EV_P)
		534	{
		535	int fd;
		536
		537	/* this should be highly optimised to not do anything but set a flag */
		538	for (fd = 0; fd < anfdmax; ++fd)
		539	if (anfds [fd].events)
		540	{
		541	anfds [fd].events = 0;
		542	fd_change (EV_A_ fd);
		543	}
		544	}
		545
333	/*****************************************************************************/	546	/*****************************************************************************/
334		547
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	548	static void
342	upheap (WT *timers, int k)	549	upheap (WT *heap, int k)
343	{	550	{
344	WT w = timers [k];	551	WT w = heap [k];
345		552
346	while (k && timers [k >> 1]->at > w->at)	553	while (k && heap [k >> 1]->at > w->at)
347	{	554	{
348	timers [k] = timers [k >> 1];	555	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	556	((W)heap [k])->active = k + 1;
350	k >>= 1;	557	k >>= 1;
351	}	558	}
352		559
353	timers [k] = w;	560	heap [k] = w;
354	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
355		562
356	}	563	}
357		564
358	static void	565	static void
359	downheap (WT *timers, int N, int k)	566	downheap (WT *heap, int N, int k)
360	{	567	{
361	WT w = timers [k];	568	WT w = heap [k];
362		569
363	while (k < (N >> 1))	570	while (k < (N >> 1))
364	{	571	{
365	int j = k << 1;	572	int j = k << 1;
366		573
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	575	++j;
369		576
370	if (w->at <= timers [j]->at)	577	if (w->at <= heap [j]->at)
371	break;	578	break;
372		579
373	timers [k] = timers [j];	580	heap [k] = heap [j];
374	timers [k]->active = k + 1;	581	((W)heap [k])->active = k + 1;
375	k = j;	582	k = j;
376	}	583	}
377		584
378	timers [k] = w;	585	heap [k] = w;
379	timers [k]->active = k + 1;	586	((W)heap [k])->active = k + 1;
		587	}
		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
380	}	594	}
381		595
382	/*****************************************************************************/	596	/*****************************************************************************/
383		597
384	typedef struct	598	typedef struct
385	{	599	{
386	struct ev_signal *head;	600	WL head;
387	sig_atomic_t volatile gotsig;	601	sig_atomic_t volatile gotsig;
388	} ANSIG;	602	} ANSIG;
389		603
390	static ANSIG *signals;	604	static ANSIG *signals;
391	static int signalmax;	605	static int signalmax;
…		…
407	}	621	}
408		622
409	static void	623	static void
410	sighandler (int signum)	624	sighandler (int signum)
411	{	625	{
		626	#if _WIN32
		627	signal (signum, sighandler);
		628	#endif
		629
412	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
413		631
414	if (!gotsig)	632	if (!gotsig)
415	{	633	{
		634	int old_errno = errno;
416	gotsig = 1;	635	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
		637	errno = old_errno;
418	}	638	}
419	}	639	}
420		640
		641	void
		642	ev_feed_signal_event (EV_P_ int signum)
		643	{
		644	WL w;
		645
		646	#if EV_MULTIPLICITY
		647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		648	#endif
		649
		650	--signum;
		651
		652	if (signum < 0 \|\| signum >= signalmax)
		653	return;
		654
		655	signals [signum].gotsig = 0;
		656
		657	for (w = signals [signum].head; w; w = w->next)
		658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		659	}
		660
421	static void	661	static void
422	sigcb (struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	663	{
424	struct ev_signal *w;
425	int signum;	664	int signum;
426		665
427	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	667	gotsig = 0;
429		668
430	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
431	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
432	{	671	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	}	672	}
439		673
440	static void	674	static void
441	siginit (void)	675	fd_intern (int fd)
442	{	676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	681	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);	682	fcntl (fd, F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	683	#endif
		684	}
		685
		686	static void
		687	siginit (EV_P)
		688	{
		689	fd_intern (sigpipe [0]);
		690	fd_intern (sigpipe [1]);
449		691
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	693	ev_io_start (EV_A_ &sigev);
		694	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	695	}
453		696
454	/*****************************************************************************/	697	/*****************************************************************************/
455		698
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];	699	static struct ev_child *childs [PID_HASHSIZE];
		700
		701	#ifndef _WIN32
		702
468	static struct ev_signal childev;	703	static struct ev_signal childev;
469		704
470	#ifndef WCONTINUED	705	#ifndef WCONTINUED
471	# define WCONTINUED 0	706	# define WCONTINUED 0
472	#endif	707	#endif
473		708
474	static void	709	static void
475	childcb (struct ev_signal *sw, int revents)	710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	711	{
477	struct ev_child *w;	712	struct ev_child *w;
		713
		714	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		715	if (w->pid == pid \|\| !w->pid)
		716	{
		717	ev_priority (w) = ev_priority (sw); /* need to do it now */
		718	w->rpid = pid;
		719	w->rstatus = status;
		720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		721	}
		722	}
		723
		724	static void
		725	childcb (EV_P_ struct ev_signal *sw, int revents)
		726	{
478	int pid, status;	727	int pid, status;
479		728
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	730	{
482	if (w->pid == pid \|\| !w->pid)	731	/* make sure we are called again until all childs have been reaped */
483	{	732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	733
485	event ((W)w, EV_CHILD);	734	child_reap (EV_A_ sw, pid, pid, status);
486	}	735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		736	}
487	}	737	}
		738
		739	#endif
488		740
489	/*****************************************************************************/	741	/*****************************************************************************/
490		742
		743	#if EV_USE_PORT
		744	# include "ev_port.c"
		745	#endif
491	#if EV_USE_KQUEUE	746	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	747	# include "ev_kqueue.c"
493	#endif	748	#endif
494	#if EV_USE_EPOLL	749	#if EV_USE_EPOLL
495	# include "ev_epoll.c"	750	# include "ev_epoll.c"
…		…
511	ev_version_minor (void)	766	ev_version_minor (void)
512	{	767	{
513	return EV_VERSION_MINOR;	768	return EV_VERSION_MINOR;
514	}	769	}
515		770
516	/* return true if we are running with elevated privileges and ignore env variables */	771	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	772	static int
518	enable_secure ()	773	enable_secure (void)
519	{	774	{
		775	#ifdef _WIN32
		776	return 0;
		777	#else
520	return getuid () != geteuid ()	778	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	779	\|\| getgid () != getegid ();
		780	#endif
522	}	781	}
523		782
524	int ev_init (int methods)	783	unsigned int
		784	ev_supported_backends (void)
525	{	785	{
526	if (!ev_method)	786	unsigned int flags = 0;
		787
		788	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		789	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		790	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		791	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		792	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		793
		794	return flags;
		795	}
		796
		797	unsigned int
		798	ev_recommended_backends (void)
		799	{
		800	unsigned int flags = ev_recommended_backends ();
		801
		802	#ifndef __NetBSD__
		803	/* kqueue is borked on everything but netbsd apparently */
		804	/* it usually doesn't work correctly on anything but sockets and pipes */
		805	flags &= ~EVBACKEND_KQUEUE;
		806	#endif
		807	#ifdef __APPLE__
		808	// flags &= ~EVBACKEND_KQUEUE; for documentation
		809	flags &= ~EVBACKEND_POLL;
		810	#endif
		811
		812	return flags;
		813	}
		814
		815	unsigned int
		816	ev_backend (EV_P)
		817	{
		818	return backend;
		819	}
		820
		821	static void
		822	loop_init (EV_P_ unsigned int flags)
		823	{
		824	if (!backend)
527	{	825	{
528	#if EV_USE_MONOTONIC	826	#if EV_USE_MONOTONIC
529	{	827	{
530	struct timespec ts;	828	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	829	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	830	have_monotonic = 1;
533	}	831	}
534	#endif	832	#endif
535		833
536	ev_now = ev_time ();	834	ev_rt_now = ev_time ();
537	now = get_clock ();	835	mn_now = get_clock ();
538	now_floor = now;	836	now_floor = mn_now;
539	diff = ev_now - now;	837	rtmn_diff = ev_rt_now - mn_now;
540		838
541	if (pipe (sigpipe))	839	if (!(flags & EVFLAG_NOENV)
542	return 0;	840	&& !enable_secure ()
543		841	&& getenv ("LIBEV_FLAGS"))
544	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	842	flags = atoi (getenv ("LIBEV_FLAGS"));
547	else
548	methods = EVMETHOD_ANY;
549		843
550	ev_method = 0;	844	if (!(flags & 0x0000ffffUL))
		845	flags \|= ev_recommended_backends ();
		846
		847	backend = 0;
		848	#if EV_USE_PORT
		849	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		850	#endif
551	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	852	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
553	#endif	853	#endif
554	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	855	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
556	#endif	856	#endif
557	#if EV_USE_POLL	857	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	858	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
559	#endif	859	#endif
560	#if EV_USE_SELECT	860	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	861	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
562	#endif	862	#endif
563		863
564	if (ev_method)	864	ev_init (&sigev, sigcb);
		865	ev_set_priority (&sigev, EV_MAXPRI);
		866	}
		867	}
		868
		869	static void
		870	loop_destroy (EV_P)
		871	{
		872	int i;
		873
		874	#if EV_USE_PORT
		875	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		876	#endif
		877	#if EV_USE_KQUEUE
		878	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		879	#endif
		880	#if EV_USE_EPOLL
		881	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		882	#endif
		883	#if EV_USE_POLL
		884	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		885	#endif
		886	#if EV_USE_SELECT
		887	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		888	#endif
		889
		890	for (i = NUMPRI; i--; )
		891	array_free (pending, [i]);
		892
		893	/* have to use the microsoft-never-gets-it-right macro */
		894	array_free (fdchange, EMPTY0);
		895	array_free (timer, EMPTY0);
		896	#if EV_PERIODICS
		897	array_free (periodic, EMPTY0);
		898	#endif
		899	array_free (idle, EMPTY0);
		900	array_free (prepare, EMPTY0);
		901	array_free (check, EMPTY0);
		902
		903	backend = 0;
		904	}
		905
		906	static void
		907	loop_fork (EV_P)
		908	{
		909	#if EV_USE_PORT
		910	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		911	#endif
		912	#if EV_USE_KQUEUE
		913	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		914	#endif
		915	#if EV_USE_EPOLL
		916	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		917	#endif
		918
		919	if (ev_is_active (&sigev))
		920	{
		921	/* default loop */
		922
		923	ev_ref (EV_A);
		924	ev_io_stop (EV_A_ &sigev);
		925	close (sigpipe [0]);
		926	close (sigpipe [1]);
		927
		928	while (pipe (sigpipe))
		929	syserr ("(libev) error creating pipe");
		930
		931	siginit (EV_A);
		932	}
		933
		934	postfork = 0;
		935	}
		936
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *
		939	ev_loop_new (unsigned int flags)
		940	{
		941	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		942
		943	memset (loop, 0, sizeof (struct ev_loop));
		944
		945	loop_init (EV_A_ flags);
		946
		947	if (ev_backend (EV_A))
		948	return loop;
		949
		950	return 0;
		951	}
		952
		953	void
		954	ev_loop_destroy (EV_P)
		955	{
		956	loop_destroy (EV_A);
		957	ev_free (loop);
		958	}
		959
		960	void
		961	ev_loop_fork (EV_P)
		962	{
		963	postfork = 1;
		964	}
		965
		966	#endif
		967
		968	#if EV_MULTIPLICITY
		969	struct ev_loop *
		970	ev_default_loop_init (unsigned int flags)
		971	#else
		972	int
		973	ev_default_loop (unsigned int flags)
		974	#endif
		975	{
		976	if (sigpipe [0] == sigpipe [1])
		977	if (pipe (sigpipe))
		978	return 0;
		979
		980	if (!ev_default_loop_ptr)
		981	{
		982	#if EV_MULTIPLICITY
		983	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		984	#else
		985	ev_default_loop_ptr = 1;
		986	#endif
		987
		988	loop_init (EV_A_ flags);
		989
		990	if (ev_backend (EV_A))
565	{	991	{
566	ev_watcher_init (&sigev, sigcb);
567	siginit ();	992	siginit (EV_A);
568		993
		994	#ifndef _WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	995	ev_signal_init (&childev, childcb, SIGCHLD);
		996	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	997	ev_signal_start (EV_A_ &childev);
		998	ev_unref (EV_A); /* child watcher should not keep loop alive */
		999	#endif
571	}	1000	}
		1001	else
		1002	ev_default_loop_ptr = 0;
572	}	1003	}
573		1004
574	return ev_method;	1005	return ev_default_loop_ptr;
		1006	}
		1007
		1008	void
		1009	ev_default_destroy (void)
		1010	{
		1011	#if EV_MULTIPLICITY
		1012	struct ev_loop *loop = ev_default_loop_ptr;
		1013	#endif
		1014
		1015	#ifndef _WIN32
		1016	ev_ref (EV_A); /* child watcher */
		1017	ev_signal_stop (EV_A_ &childev);
		1018	#endif
		1019
		1020	ev_ref (EV_A); /* signal watcher */
		1021	ev_io_stop (EV_A_ &sigev);
		1022
		1023	close (sigpipe [0]); sigpipe [0] = 0;
		1024	close (sigpipe [1]); sigpipe [1] = 0;
		1025
		1026	loop_destroy (EV_A);
		1027	}
		1028
		1029	void
		1030	ev_default_fork (void)
		1031	{
		1032	#if EV_MULTIPLICITY
		1033	struct ev_loop *loop = ev_default_loop_ptr;
		1034	#endif
		1035
		1036	if (backend)
		1037	postfork = 1;
575	}	1038	}
576		1039
577	/*****************************************************************************/	1040	/*****************************************************************************/
578		1041
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	1042	static int
		1043	any_pending (EV_P)
		1044	{
		1045	int pri;
		1046
		1047	for (pri = NUMPRI; pri--; )
		1048	if (pendingcnt [pri])
		1049	return 1;
		1050
		1051	return 0;
		1052	}
		1053
		1054	inline void
609	call_pending (void)	1055	call_pending (EV_P)
610	{	1056	{
611	int pri;	1057	int pri;
612		1058
613	for (pri = NUMPRI; pri--; )	1059	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	1060	while (pendingcnt [pri])
615	{	1061	{
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1062	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		1063
618	if (p->w)	1064	if (expect_true (p->w))
619	{	1065	{
620	p->w->pending = 0;	1066	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	1067	EV_CB_INVOKE (p->w, p->events);
622	}	1068	}
623	}	1069	}
624	}	1070	}
625		1071
626	static void	1072	inline void
627	timers_reify (void)	1073	timers_reify (EV_P)
628	{	1074	{
629	while (timercnt && timers [0]->at <= now)	1075	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	1076	{
631	struct ev_timer *w = timers [0];	1077	struct ev_timer *w = timers [0];
		1078
		1079	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		1080
633	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
634	if (w->repeat)	1082	if (w->repeat)
635	{	1083	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1084	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1085
637	w->at = now + w->repeat;	1086	((WT)w)->at += w->repeat;
		1087	if (((WT)w)->at < mn_now)
		1088	((WT)w)->at = mn_now;
		1089
638	downheap ((WT *)timers, timercnt, 0);	1090	downheap ((WT *)timers, timercnt, 0);
639	}	1091	}
640	else	1092	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	1093	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		1094
643	event ((W)w, EV_TIMEOUT);	1095	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
644	}	1096	}
645	}	1097	}
646		1098
647	static void	1099	#if EV_PERIODICS
		1100	inline void
648	periodics_reify (void)	1101	periodics_reify (EV_P)
649	{	1102	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	1103	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
651	{	1104	{
652	struct ev_periodic *w = periodics [0];	1105	struct ev_periodic *w = periodics [0];
653		1106
		1107	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1108
654	/* first reschedule or stop timer */	1109	/* first reschedule or stop timer */
655	if (w->interval)	1110	if (w->reschedule_cb)
656	{	1111	{
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1113	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1114	downheap ((WT *)periodics, periodiccnt, 0);
		1115	}
		1116	else if (w->interval)
		1117	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1118	((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));	1119	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);	1120	downheap ((WT *)periodics, periodiccnt, 0);
660	}	1121	}
661	else	1122	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	1123	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		1124
664	event ((W)w, EV_PERIODIC);	1125	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
665	}	1126	}
666	}	1127	}
667		1128
668	static void	1129	static void
669	periodics_reschedule (ev_tstamp diff)	1130	periodics_reschedule (EV_P)
670	{	1131	{
671	int i;	1132	int i;
672		1133
673	/* adjust periodics after time jump */	1134	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	1135	for (i = 0; i < periodiccnt; ++i)
675	{	1136	{
676	struct ev_periodic *w = periodics [i];	1137	struct ev_periodic *w = periodics [i];
677		1138
		1139	if (w->reschedule_cb)
		1140	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
678	if (w->interval)	1141	else if (w->interval)
679	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1142	((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	}	1143	}
691	}
692		1144
693	static int	1145	/* now rebuild the heap */
		1146	for (i = periodiccnt >> 1; i--; )
		1147	downheap ((WT *)periodics, periodiccnt, i);
		1148	}
		1149	#endif
		1150
		1151	inline int
694	time_update_monotonic (void)	1152	time_update_monotonic (EV_P)
695	{	1153	{
696	now = get_clock ();	1154	mn_now = get_clock ();
697		1155
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1156	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	1157	{
700	ev_now = now + diff;	1158	ev_rt_now = rtmn_diff + mn_now;
701	return 0;	1159	return 0;
702	}	1160	}
703	else	1161	else
704	{	1162	{
705	now_floor = now;	1163	now_floor = mn_now;
706	ev_now = ev_time ();	1164	ev_rt_now = ev_time ();
707	return 1;	1165	return 1;
708	}	1166	}
709	}	1167	}
710		1168
711	static void	1169	inline void
712	time_update (void)	1170	time_update (EV_P)
713	{	1171	{
714	int i;	1172	int i;
715		1173
716	#if EV_USE_MONOTONIC	1174	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1175	if (expect_true (have_monotonic))
718	{	1176	{
719	if (time_update_monotonic ())	1177	if (time_update_monotonic (EV_A))
720	{	1178	{
721	ev_tstamp odiff = diff;	1179	ev_tstamp odiff = rtmn_diff;
722		1180
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1181	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	1182	{
725	diff = ev_now - now;	1183	rtmn_diff = ev_rt_now - mn_now;
726		1184
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1185	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	1186	return; /* all is well */
729		1187
730	ev_now = ev_time ();	1188	ev_rt_now = ev_time ();
731	now = get_clock ();	1189	mn_now = get_clock ();
732	now_floor = now;	1190	now_floor = mn_now;
733	}	1191	}
734		1192
		1193	# if EV_PERIODICS
735	periodics_reschedule (diff - odiff);	1194	periodics_reschedule (EV_A);
		1195	# endif
736	/* no timer adjustment, as the monotonic clock doesn't jump */	1196	/* no timer adjustment, as the monotonic clock doesn't jump */
		1197	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	1198	}
738	}	1199	}
739	else	1200	else
740	#endif	1201	#endif
741	{	1202	{
742	ev_now = ev_time ();	1203	ev_rt_now = ev_time ();
743		1204
744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1205	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	1206	{
		1207	#if EV_PERIODICS
746	periodics_reschedule (ev_now - now);	1208	periodics_reschedule (EV_A);
		1209	#endif
747		1210
748	/* adjust timers. this is easy, as the offset is the same for all */	1211	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	1212	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	1213	((WT)timers [i])->at += ev_rt_now - mn_now;
751	}	1214	}
752		1215
753	now = ev_now;	1216	mn_now = ev_rt_now;
754	}	1217	}
755	}	1218	}
756		1219
757	int ev_loop_done;	1220	void
		1221	ev_ref (EV_P)
		1222	{
		1223	++activecnt;
		1224	}
758		1225
		1226	void
		1227	ev_unref (EV_P)
		1228	{
		1229	--activecnt;
		1230	}
		1231
		1232	static int loop_done;
		1233
		1234	void
759	void ev_loop (int flags)	1235	ev_loop (EV_P_ int flags)
760	{	1236	{
761	double block;	1237	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1238	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		1239
764	do	1240	while (activecnt)
765	{	1241	{
766	/* queue check watchers (and execute them) */	1242	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	1243	if (expect_false (preparecnt))
768	{	1244	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1245	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	1246	call_pending (EV_A);
771	}	1247	}
772		1248
		1249	/* we might have forked, so reify kernel state if necessary */
		1250	if (expect_false (postfork))
		1251	loop_fork (EV_A);
		1252
773	/* update fd-related kernel structures */	1253	/* update fd-related kernel structures */
774	fd_reify ();	1254	fd_reify (EV_A);
775		1255
776	/* calculate blocking time */	1256	/* calculate blocking time */
777		1257
778	/* we only need this for !monotonic clockor timers, but as we basically	1258	/* we only need this for !monotonic clock or timers, but as we basically
779	always have timers, we just calculate it always */	1259	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1261	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1262	time_update_monotonic (EV_A);
783	else	1263	else
784	#endif	1264	#endif
785	{	1265	{
786	ev_now = ev_time ();	1266	ev_rt_now = ev_time ();
787	now = ev_now;	1267	mn_now = ev_rt_now;
788	}	1268	}
789		1269
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1270	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1271	block = 0.;
792	else	1272	else
793	{	1273	{
794	block = MAX_BLOCKTIME;	1274	block = MAX_BLOCKTIME;
795		1275
796	if (timercnt)	1276	if (timercnt)
797	{	1277	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1278	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
799	if (block > to) block = to;	1279	if (block > to) block = to;
800	}	1280	}
801		1281
		1282	#if EV_PERIODICS
802	if (periodiccnt)	1283	if (periodiccnt)
803	{	1284	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1285	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
805	if (block > to) block = to;	1286	if (block > to) block = to;
806	}	1287	}
		1288	#endif
807		1289
808	if (block < 0.) block = 0.;	1290	if (expect_false (block < 0.)) block = 0.;
809	}	1291	}
810		1292
811	method_poll (block);	1293	backend_poll (EV_A_ block);
812		1294
813	/* update ev_now, do magic */	1295	/* update ev_rt_now, do magic */
814	time_update ();	1296	time_update (EV_A);
815		1297
816	/* queue pending timers and reschedule them */	1298	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1299	timers_reify (EV_A); /* relative timers called last */
		1300	#if EV_PERIODICS
818	periodics_reify (); /* absolute timers called first */	1301	periodics_reify (EV_A); /* absolute timers called first */
		1302	#endif
819		1303
820	/* queue idle watchers unless io or timers are pending */	1304	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1305	if (idlecnt && !any_pending (EV_A))
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1306	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1307
824	/* queue check watchers, to be executed first */	1308	/* queue check watchers, to be executed first */
825	if (checkcnt)	1309	if (expect_false (checkcnt))
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1310	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1311
828	call_pending ();	1312	call_pending (EV_A);
829	}
830	while (!ev_loop_done);
831		1313
		1314	if (expect_false (loop_done))
		1315	break;
		1316	}
		1317
832	if (ev_loop_done != 2)	1318	if (loop_done != 2)
833	ev_loop_done = 0;	1319	loop_done = 0;
		1320	}
		1321
		1322	void
		1323	ev_unloop (EV_P_ int how)
		1324	{
		1325	loop_done = how;
834	}	1326	}
835		1327
836	/*****************************************************************************/	1328	/*****************************************************************************/
837		1329
838	static void	1330	inline void
839	wlist_add (WL *head, WL elem)	1331	wlist_add (WL *head, WL elem)
840	{	1332	{
841	elem->next = *head;	1333	elem->next = *head;
842	*head = elem;	1334	*head = elem;
843	}	1335	}
844		1336
845	static void	1337	inline void
846	wlist_del (WL *head, WL elem)	1338	wlist_del (WL *head, WL elem)
847	{	1339	{
848	while (*head)	1340	while (*head)
849	{	1341	{
850	if (*head == elem)	1342	if (*head == elem)
…		…
855		1347
856	head = &(*head)->next;	1348	head = &(*head)->next;
857	}	1349	}
858	}	1350	}
859		1351
860	static void	1352	inline void
861	ev_clear_pending (W w)	1353	ev_clear_pending (EV_P_ W w)
862	{	1354	{
863	if (w->pending)	1355	if (w->pending)
864	{	1356	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1357	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1358	w->pending = 0;
867	}	1359	}
868	}	1360	}
869		1361
870	static void	1362	inline void
871	ev_start (W w, int active)	1363	ev_start (EV_P_ W w, int active)
872	{	1364	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1365	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1366	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1367
876	w->active = active;	1368	w->active = active;
		1369	ev_ref (EV_A);
877	}	1370	}
878		1371
879	static void	1372	inline void
880	ev_stop (W w)	1373	ev_stop (EV_P_ W w)
881	{	1374	{
		1375	ev_unref (EV_A);
882	w->active = 0;	1376	w->active = 0;
883	}	1377	}
884		1378
885	/*****************************************************************************/	1379	/*****************************************************************************/
886		1380
887	void	1381	void
888	ev_io_start (struct ev_io *w)	1382	ev_io_start (EV_P_ struct ev_io *w)
889	{	1383	{
890	int fd = w->fd;	1384	int fd = w->fd;
891		1385
892	if (ev_is_active (w))	1386	if (expect_false (ev_is_active (w)))
893	return;	1387	return;
894		1388
895	assert (("ev_io_start called with negative fd", fd >= 0));	1389	assert (("ev_io_start called with negative fd", fd >= 0));
896		1390
897	ev_start ((W)w, 1);	1391	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1392	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1393	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1394
901	fd_change (fd);	1395	fd_change (EV_A_ fd);
902	}	1396	}
903		1397
904	void	1398	void
905	ev_io_stop (struct ev_io *w)	1399	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1400	{
907	ev_clear_pending ((W)w);	1401	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1402	if (expect_false (!ev_is_active (w)))
909	return;	1403	return;
910		1404
		1405	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1406
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1407	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1408	ev_stop (EV_A_ (W)w);
913		1409
914	fd_change (w->fd);	1410	fd_change (EV_A_ w->fd);
915	}	1411	}
916		1412
917	void	1413	void
918	ev_timer_start (struct ev_timer *w)	1414	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1415	{
920	if (ev_is_active (w))	1416	if (expect_false (ev_is_active (w)))
921	return;	1417	return;
922		1418
923	w->at += now;	1419	((WT)w)->at += mn_now;
924		1420
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1421	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1422
927	ev_start ((W)w, ++timercnt);	1423	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1424	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
929	timers [timercnt - 1] = w;	1425	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1426	upheap ((WT *)timers, timercnt - 1);
931	}
932		1427
		1428	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1429	}
		1430
933	void	1431	void
934	ev_timer_stop (struct ev_timer *w)	1432	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1433	{
936	ev_clear_pending ((W)w);	1434	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1435	if (expect_false (!ev_is_active (w)))
938	return;	1436	return;
939		1437
		1438	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1439
940	if (w->active < timercnt--)	1440	if (expect_true (((W)w)->active < timercnt--))
941	{	1441	{
942	timers [w->active - 1] = timers [timercnt];	1442	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1443	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1444	}
945		1445
946	w->at = w->repeat;	1446	((WT)w)->at -= mn_now;
947		1447
948	ev_stop ((W)w);	1448	ev_stop (EV_A_ (W)w);
949	}	1449	}
950		1450
951	void	1451	void
952	ev_timer_again (struct ev_timer *w)	1452	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1453	{
954	if (ev_is_active (w))	1454	if (ev_is_active (w))
955	{	1455	{
956	if (w->repeat)	1456	if (w->repeat)
957	{	1457	{
958	w->at = now + w->repeat;	1458	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1460	}
961	else	1461	else
962	ev_timer_stop (w);	1462	ev_timer_stop (EV_A_ w);
963	}	1463	}
964	else if (w->repeat)	1464	else if (w->repeat)
		1465	{
		1466	w->at = w->repeat;
965	ev_timer_start (w);	1467	ev_timer_start (EV_A_ w);
		1468	}
966	}	1469	}
967		1470
		1471	#if EV_PERIODICS
968	void	1472	void
969	ev_periodic_start (struct ev_periodic *w)	1473	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1474	{
971	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
972	return;	1476	return;
973		1477
		1478	if (w->reschedule_cb)
		1479	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1480	else if (w->interval)
		1481	{
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1482	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 */	1483	/* 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;	1484	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1485	}
979		1486
980	ev_start ((W)w, ++periodiccnt);	1487	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1488	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
982	periodics [periodiccnt - 1] = w;	1489	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1490	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1491
		1492	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1493	}
		1494
986	void	1495	void
987	ev_periodic_stop (struct ev_periodic *w)	1496	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1497	{
989	ev_clear_pending ((W)w);	1498	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1499	if (expect_false (!ev_is_active (w)))
991	return;	1500	return;
992		1501
		1502	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1503
993	if (w->active < periodiccnt--)	1504	if (expect_true (((W)w)->active < periodiccnt--))
994	{	1505	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1506	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1507	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1508	}
998		1509
999	ev_stop ((W)w);	1510	ev_stop (EV_A_ (W)w);
1000	}	1511	}
1001		1512
1002	void	1513	void
		1514	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1515	{
		1516	/* TODO: use adjustheap and recalculation */
		1517	ev_periodic_stop (EV_A_ w);
		1518	ev_periodic_start (EV_A_ w);
		1519	}
		1520	#endif
		1521
		1522	void
1003	ev_signal_start (struct ev_signal *w)	1523	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1524	{
1005	if (ev_is_active (w))	1525	if (expect_false (ev_is_active (w)))
1006	return;	1526	return;
1007		1527
		1528	ev_start (EV_A_ (W)w, ++idlecnt);
		1529	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1530	idles [idlecnt - 1] = w;
		1531	}
		1532
		1533	void
		1534	ev_idle_stop (EV_P_ struct ev_idle *w)
		1535	{
		1536	ev_clear_pending (EV_A_ (W)w);
		1537	if (expect_false (!ev_is_active (w)))
		1538	return;
		1539
		1540	idles [((W)w)->active - 1] = idles [--idlecnt];
		1541	ev_stop (EV_A_ (W)w);
		1542	}
		1543
		1544	void
		1545	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1546	{
		1547	if (expect_false (ev_is_active (w)))
		1548	return;
		1549
		1550	ev_start (EV_A_ (W)w, ++preparecnt);
		1551	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1552	prepares [preparecnt - 1] = w;
		1553	}
		1554
		1555	void
		1556	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1557	{
		1558	ev_clear_pending (EV_A_ (W)w);
		1559	if (expect_false (!ev_is_active (w)))
		1560	return;
		1561
		1562	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1563	ev_stop (EV_A_ (W)w);
		1564	}
		1565
		1566	void
		1567	ev_check_start (EV_P_ struct ev_check *w)
		1568	{
		1569	if (expect_false (ev_is_active (w)))
		1570	return;
		1571
		1572	ev_start (EV_A_ (W)w, ++checkcnt);
		1573	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1574	checks [checkcnt - 1] = w;
		1575	}
		1576
		1577	void
		1578	ev_check_stop (EV_P_ struct ev_check *w)
		1579	{
		1580	ev_clear_pending (EV_A_ (W)w);
		1581	if (expect_false (!ev_is_active (w)))
		1582	return;
		1583
		1584	checks [((W)w)->active - 1] = checks [--checkcnt];
		1585	ev_stop (EV_A_ (W)w);
		1586	}
		1587
		1588	#ifndef SA_RESTART
		1589	# define SA_RESTART 0
		1590	#endif
		1591
		1592	void
		1593	ev_signal_start (EV_P_ struct ev_signal *w)
		1594	{
		1595	#if EV_MULTIPLICITY
		1596	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1597	#endif
		1598	if (expect_false (ev_is_active (w)))
		1599	return;
		1600
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1601	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1602
1010	ev_start ((W)w, 1);	1603	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1604	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1605	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1606
1014	if (!w->next)	1607	if (!((WL)w)->next)
1015	{	1608	{
		1609	#if _WIN32
		1610	signal (w->signum, sighandler);
		1611	#else
1016	struct sigaction sa;	1612	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1613	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1614	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1615	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1616	sigaction (w->signum, &sa, 0);
		1617	#endif
1021	}	1618	}
1022	}	1619	}
1023		1620
1024	void	1621	void
1025	ev_signal_stop (struct ev_signal *w)	1622	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1623	{
1027	ev_clear_pending ((W)w);	1624	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1625	if (expect_false (!ev_is_active (w)))
1029	return;	1626	return;
1030		1627
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1628	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1629	ev_stop (EV_A_ (W)w);
1033		1630
1034	if (!signals [w->signum - 1].head)	1631	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1632	signal (w->signum, SIG_DFL);
1036	}	1633	}
1037		1634
1038	void	1635	void
1039	ev_idle_start (struct ev_idle *w)	1636	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1637	{
		1638	#if EV_MULTIPLICITY
		1639	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1640	#endif
1041	if (ev_is_active (w))	1641	if (expect_false (ev_is_active (w)))
1042	return;	1642	return;
1043		1643
1044	ev_start ((W)w, ++idlecnt);	1644	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1645	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1646	}
1048		1647
1049	void	1648	void
1050	ev_idle_stop (struct ev_idle *w)	1649	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1650	{
1052	ev_clear_pending ((W)w);	1651	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1652	if (expect_false (!ev_is_active (w)))
1054	return;	1653	return;
1055		1654
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);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1655	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1656	ev_stop (EV_A_ (W)w);
1123	}	1657	}
1124		1658
1125	/*****************************************************************************/	1659	/*****************************************************************************/
1126		1660
1127	struct ev_once	1661	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1665	void (cb)(int revents, void arg);
1132	void *arg;	1666	void *arg;
1133	};	1667	};
1134		1668
1135	static void	1669	static void
1136	once_cb (struct ev_once *once, int revents)	1670	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1671	{
1138	void (cb)(int revents, void arg) = once->cb;	1672	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1673	void *arg = once->arg;
1140		1674
1141	ev_io_stop (&once->io);	1675	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1676	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1677	ev_free (once);
1144		1678
1145	cb (revents, arg);	1679	cb (revents, arg);
1146	}	1680	}
1147		1681
1148	static void	1682	static void
1149	once_cb_io (struct ev_io *w, int revents)	1683	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1684	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1685	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1686	}
1153		1687
1154	static void	1688	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1689	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1690	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1691	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1692	}
1159		1693
1160	void	1694	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1695	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1696	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1697	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1164		1698
1165	if (!once)	1699	if (expect_false (!once))
		1700	{
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1701	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1167	else	1702	return;
1168	{	1703	}
		1704
1169	once->cb = cb;	1705	once->cb = cb;
1170	once->arg = arg;	1706	once->arg = arg;
1171		1707
1172	ev_watcher_init (&once->io, once_cb_io);	1708	ev_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1709	if (fd >= 0)
1174	{	1710	{
1175	ev_io_set (&once->io, fd, events);	1711	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1712	ev_io_start (EV_A_ &once->io);
1177	}	1713	}
1178		1714
1179	ev_watcher_init (&once->to, once_cb_to);	1715	ev_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1716	if (timeout >= 0.)
1181	{	1717	{
1182	ev_timer_set (&once->to, timeout, 0.);	1718	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1719	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	{	1720	}
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	}	1721	}
1265		1722
		1723	#ifdef __cplusplus
		1724	}
1266	#endif	1725	#endif
1267		1726
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 1.130 by root, Fri Nov 23 05:13:48 2007 UTC

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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 1.130 by root, Fri Nov 23 05:13:48 2007 UTC