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Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.67 by root, Mon Nov 5 16:42:15 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	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
		95	#endif
		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
100	#endif	136	#endif
101		137
102	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
104		140
		141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		143
105	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
108		147
109	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
110	ev_tstamp ev_now;
111	int ev_method;
112		149
113	static int have_monotonic; /* runtime */	150	#if WIN32
114		151	/* note: the comment below could not be substantiated, but what would I care */
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
116	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
117	static void (*method_poll)(ev_tstamp timeout);	154	#endif
118		155
119	/*****************************************************************************/	156	/*****************************************************************************/
120		157
121	ev_tstamp	158	typedef struct
		159	{
		160	struct ev_watcher_list *head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
122	ev_time (void)	192	ev_time (void)
123	{	193	{
124	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
125	struct timespec ts;	195	struct timespec ts;
126	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
130	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	202	#endif
133	}	203	}
134		204
135	static ev_tstamp	205	inline ev_tstamp
136	get_clock (void)	206	get_clock (void)
137	{	207	{
138	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
140	{	210	{
…		…
143	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
144	}	214	}
145	#endif	215	#endif
146		216
147	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
148	}	224	}
149		225
150	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
151		227
152	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
162	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
163	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
164	cur = newcnt; \	240	cur = newcnt; \
165	}	241	}
166		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (*base) * (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
167	/*****************************************************************************/	254	/*****************************************************************************/
168
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178		255
179	static void	256	static void
180	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
181	{	258	{
182	while (count--)	259	while (count--)
…		…
187		264
188	++base;	265	++base;
189	}	266	}
190	}	267	}
191		268
192	typedef struct
193	{
194	W w;
195	int events;
196	} ANPENDING;
197
198	static ANPENDING *pendings;
199	static int pendingmax, pendingcnt;
200
201	static void	269	static void
202	event (W w, int events)	270	event (EV_P_ W w, int events)
203	{	271	{
204	if (w->pending)	272	if (w->pending)
205	{	273	{
206	pendings [w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
207	return;	275	return;
208	}	276	}
209		277
210	w->pending = ++pendingcnt;	278	w->pending = ++pendingcnt [ABSPRI (w)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
212	pendings [pendingcnt - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
213	pendings [pendingcnt - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
214	}	282	}
215		283
216	static void	284	static void
217	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	286	{
219	int i;	287	int i;
220		288
221	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	290	event (EV_A_ events [i], type);
223	}	291	}
224		292
225	static void	293	static void
226	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
227	{	295	{
228	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	297	struct ev_io *w;
230		298
231	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
232	{	300	{
233	int ev = w->events & events;	301	int ev = w->events & events;
234		302
235	if (ev)	303	if (ev)
236	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
237	}	305	}
238	}	306	}
239		307
240	/*****************************************************************************/	308	/*****************************************************************************/
241		309
242	static int *fdchanges;
243	static int fdchangemax, fdchangecnt;
244
245	static void	310	static void
246	fd_reify (void)	311	fd_reify (EV_P)
247	{	312	{
248	int i;	313	int i;
249		314
250	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
251	{	316	{
…		…
253	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	319	struct ev_io *w;
255		320
256	int events = 0;	321	int events = 0;
257		322
258	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
259	events |= w->events;	324	events |= w->events;
260		325
261	anfd->reify = 0;	326	anfd->reify = 0;
262		327
263	if (anfd->events != events)
264	{
265	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	329	anfd->events = events;
267	}
268	}	330	}
269		331
270	fdchangecnt = 0;	332	fdchangecnt = 0;
271	}	333	}
272		334
273	static void	335	static void
274	fd_change (int fd)	336	fd_change (EV_P_ int fd)
275	{	337	{
276	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
277	return;	339	return;
278		340
279	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
283	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
284	}	346	}
285		347
286	static void	348	static void
287	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
288	{	350	{
289	struct ev_io *w;	351	struct ev_io *w;
290		352
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
293	{	354	{
294	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
296	}	357	}
297	}	358	}
298		359
299	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
300	static void	361	static void
301	fd_ebadf (void)	362	fd_ebadf (EV_P)
302	{	363	{
303	int fd;	364	int fd;
304		365
305	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	367	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
308	fd_kill (fd);	369	fd_kill (EV_A_ fd);
309	}	370	}
310		371
311	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
312	static void	373	static void
313	fd_enomem (void)	374	fd_enomem (EV_P)
314	{	375	{
315	int fd = anfdmax;	376	int fd;
316		377
317	while (fd--)	378	for (fd = anfdmax; fd--; )
318	if (anfds [fd].events)	379	if (anfds [fd].events)
319	{	380	{
320	close (fd);	381	close (fd);
321	fd_kill (fd);	382	fd_kill (EV_A_ fd);
322	return;	383	return;
323	}	384	}
324	}	385	}
325		386
		387	/* susually called after fork if method needs to re-arm all fds from scratch */
		388	static void
		389	fd_rearm_all (EV_P)
		390	{
		391	int fd;
		392
		393	/* this should be highly optimised to not do anything but set a flag */
		394	for (fd = 0; fd < anfdmax; ++fd)
		395	if (anfds [fd].events)
		396	{
		397	anfds [fd].events = 0;
		398	fd_change (EV_A_ fd);
		399	}
		400	}
		401
326	/*****************************************************************************/	402	/*****************************************************************************/
327		403
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	404	static void
335	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
336	{	406	{
337	WT w = timers [k];	407	WT w = heap [k];
338		408
339	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
340	{	410	{
341	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
343	k >>= 1;	413	k >>= 1;
344	}	414	}
345		415
346	timers [k] = w;	416	heap [k] = w;
347	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
348		418
349	}	419	}
350		420
351	static void	421	static void
352	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
353	{	423	{
354	WT w = timers [k];	424	WT w = heap [k];
355		425
356	while (k < (N >> 1))	426	while (k < (N >> 1))
357	{	427	{
358	int j = k << 1;	428	int j = k << 1;
359		429
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	431	++j;
362		432
363	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
364	break;	434	break;
365		435
366	timers [k] = timers [j];	436	heap [k] = heap [j];
367	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
368	k = j;	438	k = j;
369	}	439	}
370		440
371	timers [k] = w;	441	heap [k] = w;
372	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
373	}	443	}
374		444
375	/*****************************************************************************/	445	/*****************************************************************************/
376		446
377	typedef struct	447	typedef struct
378	{	448	{
379	struct ev_signal *head;	449	struct ev_watcher_list *head;
380	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
381	} ANSIG;	451	} ANSIG;
382		452
383	static ANSIG *signals;	453	static ANSIG *signals;
384	static int signalmax;	454	static int signalmax;
…		…
400	}	470	}
401		471
402	static void	472	static void
403	sighandler (int signum)	473	sighandler (int signum)
404	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
405	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
406		480
407	if (!gotsig)	481	if (!gotsig)
408	{	482	{
		483	int old_errno = errno;
409	gotsig = 1;	484	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
411	}	487	}
412	}	488	}
413		489
414	static void	490	static void
415	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	492	{
417	struct ev_signal *w;	493	struct ev_watcher_list *w;
418	int signum;	494	int signum;
419		495
420	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	497	gotsig = 0;
422		498
…		…
424	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
425	{	501	{
426	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
427		503
428	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
430	}	506	}
431	}	507	}
432		508
433	static void	509	static void
434	siginit (void)	510	siginit (EV_P)
435	{	511	{
		512	#ifndef WIN32
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438		515
439	/* rather than sort out wether we really need nb, set it */	516	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		519	#endif
442		520
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	524	}
446		525
447	/*****************************************************************************/	526	/*****************************************************************************/
448		527
449	static struct ev_idle **idles;	528	#ifndef WIN32
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459		529
460	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
461	static struct ev_signal childev;	531	static struct ev_signal childev;
462		532
463	#ifndef WCONTINUED	533	#ifndef WCONTINUED
464	# define WCONTINUED 0	534	# define WCONTINUED 0
465	#endif	535	#endif
466		536
467	static void	537	static void
468	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	539	{
470	struct ev_child *w;	540	struct ev_child *w;
		541
		542	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		543	if (w->pid == pid || !w->pid)
		544	{
		545	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		546	w->rpid = pid;
		547	w->rstatus = status;
		548	event (EV_A_ (W)w, EV_CHILD);
		549	}
		550	}
		551
		552	static void
		553	childcb (EV_P_ struct ev_signal *sw, int revents)
		554	{
471	int pid, status;	555	int pid, status;
472		556
473	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
475	if (w->pid == pid || !w->pid)	559	/* make sure we are called again until all childs have been reaped */
476	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
477	w->status = status;	561
478	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, pid, pid, status);
479	}	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		564	}
480	}	565	}
		566
		567	#endif
481		568
482	/*****************************************************************************/	569	/*****************************************************************************/
483		570
		571	#if EV_USE_KQUEUE
		572	# include "ev_kqueue.c"
		573	#endif
484	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	575	# include "ev_epoll.c"
486	#endif	576	#endif
487	#if EV_USE_POLL	577	#if EV_USE_POLL
488	# include "ev_poll.c"	578	# include "ev_poll.c"
…		…
501	ev_version_minor (void)	591	ev_version_minor (void)
502	{	592	{
503	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
504	}	594	}
505		595
506	/* return true if we are running with elevated privileges and ignore env variables */	596	/* return true if we are running with elevated privileges and should ignore env variables */
507	static int	597	static int
508	enable_secure ()	598	enable_secure (void)
509	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
510	return getuid () != geteuid ()	603	return getuid () != geteuid ()
511	|| getgid () != getegid ();	604	|| getgid () != getegid ();
		605	#endif
512	}	606	}
513		607
514	int ev_init (int methods)	608	int
		609	ev_method (EV_P)
515	{	610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
516	if (!ev_method)	617	if (!method)
517	{	618	{
518	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
519	{	620	{
520	struct timespec ts;	621	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	623	have_monotonic = 1;
523	}	624	}
524	#endif	625	#endif
525		626
526	ev_now = ev_time ();	627	rt_now = ev_time ();
527	now = get_clock ();	628	mn_now = get_clock ();
528	now_floor = now;	629	now_floor = mn_now;
529	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
530
531	if (pipe (sigpipe))
532	return 0;
533		631
534	if (methods == EVMETHOD_AUTO)	632	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	634	methods = atoi (getenv ("LIBEV_METHODS"));
537	else	635	else
538	methods = EVMETHOD_ANY;	636	methods = EVMETHOD_ANY;
539		637
540	ev_method = 0;	638	method = 0;
		639	#if EV_USE_WIN32
		640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		641	#endif
		642	#if EV_USE_KQUEUE
		643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		644	#endif
541	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
543	#endif	647	#endif
544	#if EV_USE_POLL	648	#if EV_USE_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
546	#endif	650	#endif
547	#if EV_USE_SELECT	651	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
549	#endif	653	#endif
		654	}
		655	}
550		656
		657	void
		658	loop_destroy (EV_P)
		659	{
		660	int i;
		661
		662	#if EV_USE_WIN32
		663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		664	#endif
		665	#if EV_USE_KQUEUE
		666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		667	#endif
		668	#if EV_USE_EPOLL
		669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		670	#endif
		671	#if EV_USE_POLL
		672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		673	#endif
		674	#if EV_USE_SELECT
		675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		676	#endif
		677
		678	for (i = NUMPRI; i--; )
		679	array_free (pending, [i]);
		680
		681	array_free (fdchange, );
		682	array_free (timer, );
		683	array_free (periodic, );
		684	array_free (idle, );
		685	array_free (prepare, );
		686	array_free (check, );
		687
		688	method = 0;
		689	/*TODO*/
		690	}
		691
		692	void
		693	loop_fork (EV_P)
		694	{
		695	/*TODO*/
		696	#if EV_USE_EPOLL
		697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		698	#endif
		699	#if EV_USE_KQUEUE
		700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		701	#endif
		702	}
		703
		704	#if EV_MULTIPLICITY
		705	struct ev_loop *
		706	ev_loop_new (int methods)
		707	{
		708	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		709
		710	loop_init (EV_A_ methods);
		711
		712	if (ev_method (EV_A))
		713	return loop;
		714
		715	return 0;
		716	}
		717
		718	void
		719	ev_loop_destroy (EV_P)
		720	{
		721	loop_destroy (EV_A);
		722	free (loop);
		723	}
		724
		725	void
		726	ev_loop_fork (EV_P)
		727	{
		728	loop_fork (EV_A);
		729	}
		730
		731	#endif
		732
		733	#if EV_MULTIPLICITY
		734	struct ev_loop default_loop_struct;
		735	static struct ev_loop *default_loop;
		736
		737	struct ev_loop *
		738	#else
		739	static int default_loop;
		740
		741	int
		742	#endif
		743	ev_default_loop (int methods)
		744	{
		745	if (sigpipe [0] == sigpipe [1])
		746	if (pipe (sigpipe))
		747	return 0;
		748
		749	if (!default_loop)
		750	{
		751	#if EV_MULTIPLICITY
		752	struct ev_loop *loop = default_loop = &default_loop_struct;
		753	#else
		754	default_loop = 1;
		755	#endif
		756
		757	loop_init (EV_A_ methods);
		758
551	if (ev_method)	759	if (ev_method (EV_A))
552	{	760	{
553	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
554	siginit ();	763	siginit (EV_A);
555		764
		765	#ifndef WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	768	ev_signal_start (EV_A_ &childev);
		769	ev_unref (EV_A); /* child watcher should not keep loop alive */
		770	#endif
558	}	771	}
		772	else
		773	default_loop = 0;
559	}	774	}
560		775
561	return ev_method;	776	return default_loop;
562	}	777	}
563		778
564	/*****************************************************************************/
565
566	void	779	void
567	ev_fork_prepare (void)	780	ev_default_destroy (void)
568	{	781	{
569	/* nop */	782	#if EV_MULTIPLICITY
570	}	783	struct ev_loop *loop = default_loop;
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif	784	#endif
585		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
586	ev_io_stop (&sigev);	790	ev_io_stop (EV_A_ &sigev);
		791
		792	close (sigpipe [0]); sigpipe [0] = 0;
		793	close (sigpipe [1]); sigpipe [1] = 0;
		794
		795	loop_destroy (EV_A);
		796	}
		797
		798	void
		799	ev_default_fork (void)
		800	{
		801	#if EV_MULTIPLICITY
		802	struct ev_loop *loop = default_loop;
		803	#endif
		804
		805	loop_fork (EV_A);
		806
		807	ev_io_stop (EV_A_ &sigev);
587	close (sigpipe [0]);	808	close (sigpipe [0]);
588	close (sigpipe [1]);	809	close (sigpipe [1]);
589	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
590	siginit ();	813	siginit (EV_A);
591	}	814	}
592		815
593	/*****************************************************************************/	816	/*****************************************************************************/
594		817
595	static void	818	static void
596	call_pending (void)	819	call_pending (EV_P)
597	{	820	{
		821	int pri;
		822
		823	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	824	while (pendingcnt [pri])
599	{	825	{
600	ANPENDING *p = pendings + --pendingcnt;	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		827
602	if (p->w)	828	if (p->w)
603	{	829	{
604	p->w->pending = 0;	830	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
606	}	832	}
607	}	833	}
608	}	834	}
609		835
610	static void	836	static void
611	timers_reify (void)	837	timers_reify (EV_P)
612	{	838	{
613	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
614	{	840	{
615	struct ev_timer *w = timers [0];	841	struct ev_timer *w = timers [0];
		842
		843	assert (("inactive timer on timer heap detected", ev_is_active (w)));
616		844
617	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
618	if (w->repeat)	846	if (w->repeat)
619	{	847	{
620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
621	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
622	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
623	}	851	}
624	else	852	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		854
627	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
628	}	856	}
629	}	857	}
630		858
631	static void	859	static void
632	periodics_reify (void)	860	periodics_reify (EV_P)
633	{	861	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
635	{	863	{
636	struct ev_periodic *w = periodics [0];	864	struct ev_periodic *w = periodics [0];
		865
		866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
637		867
638	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
639	if (w->interval)	869	if (w->interval)
640	{	870	{
641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	871	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
643	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
644	}	874	}
645	else	875	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		877
648	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
649	}	879	}
650	}	880	}
651		881
652	static void	882	static void
653	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
654	{	884	{
655	int i;	885	int i;
656		886
657	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
659	{	889	{
660	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
661		891
662	if (w->interval)	892	if (w->interval)
663	{	893	{
664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
665		895
666	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
667	{	897	{
668	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
669	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
670		900
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}	902	}
673	}	903	}
674	}	904	}
675	}	905	}
676		906
677	static int	907	inline int
678	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
679	{	909	{
680	now = get_clock ();	910	mn_now = get_clock ();
681		911
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	913	{
684	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
685	return 0;	915	return 0;
686	}	916	}
687	else	917	else
688	{	918	{
689	now_floor = now;	919	now_floor = mn_now;
690	ev_now = ev_time ();	920	rt_now = ev_time ();
691	return 1;	921	return 1;
692	}	922	}
693	}	923	}
694		924
695	static void	925	static void
696	time_update (void)	926	time_update (EV_P)
697	{	927	{
698	int i;	928	int i;
699		929
700	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
702	{	932	{
703	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
704	{	934	{
705	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
706		936
707	for (i = 4; --i; ) /* loop a few times, before making important decisions */	937	for (i = 4; --i; ) /* loop a few times, before making important decisions */
708	{	938	{
709	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
710		940
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	942	return; /* all is well */
713		943
714	ev_now = ev_time ();	944	rt_now = ev_time ();
715	now = get_clock ();	945	mn_now = get_clock ();
716	now_floor = now;	946	now_floor = mn_now;
717	}	947	}
718		948
719	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
720	/* no timer adjustment, as the monotonic clock doesn't jump */	950	/* no timer adjustment, as the monotonic clock doesn't jump */
		951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
721	}	952	}
722	}	953	}
723	else	954	else
724	#endif	955	#endif
725	{	956	{
726	ev_now = ev_time ();	957	rt_now = ev_time ();
727		958
728	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	959	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
729	{	960	{
730	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
731		962
732	/* adjust timers. this is easy, as the offset is the same for all */	963	/* adjust timers. this is easy, as the offset is the same for all */
733	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
735	}	966	}
736		967
737	now = ev_now;	968	mn_now = rt_now;
738	}	969	}
739	}	970	}
740		971
741	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
742		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
743	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
744	{	988	{
745	double block;	989	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
747		991
748	do	992	do
749	{	993	{
750	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
752	{	996	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	998	call_pending (EV_A);
755	}	999	}
756		1000
757	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
758	fd_reify ();	1002	fd_reify (EV_A);
759		1003
760	/* calculate blocking time */	1004	/* calculate blocking time */
761		1005
762	/* we only need this for !monotonic clockor timers, but as we basically	1006	/* we only need this for !monotonic clockor timers, but as we basically
763	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
764	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
766	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
767	else	1011	else
768	#endif	1012	#endif
769	{	1013	{
770	ev_now = ev_time ();	1014	rt_now = ev_time ();
771	now = ev_now;	1015	mn_now = rt_now;
772	}	1016	}
773		1017
774	if (flags & EVLOOP_NONBLOCK || idlecnt)	1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
775	block = 0.;	1019	block = 0.;
776	else	1020	else
777	{	1021	{
778	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
779		1023
780	if (timercnt)	1024	if (timercnt)
781	{	1025	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
783	if (block > to) block = to;	1027	if (block > to) block = to;
784	}	1028	}
785		1029
786	if (periodiccnt)	1030	if (periodiccnt)
787	{	1031	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
789	if (block > to) block = to;	1033	if (block > to) block = to;
790	}	1034	}
791		1035
792	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
793	}	1037	}
794		1038
795	method_poll (block);	1039	method_poll (EV_A_ block);
796		1040
797	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
798	time_update ();	1042	time_update (EV_A);
799		1043
800	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
802	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
803		1047
804	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	1049	if (!pendingcnt)
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		1051
808	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
809	if (checkcnt)	1053	if (checkcnt)
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		1055
812	call_pending ();	1056	call_pending (EV_A);
813	}	1057	}
814	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
815		1059
816	if (ev_loop_done != 2)	1060	if (loop_done != 2)
817	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
818	}	1068	}
819		1069
820	/*****************************************************************************/	1070	/*****************************************************************************/
821		1071
822	static void	1072	inline void
823	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
824	{	1074	{
825	elem->next = *head;	1075	elem->next = *head;
826	*head = elem;	1076	*head = elem;
827	}	1077	}
828		1078
829	static void	1079	inline void
830	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
831	{	1081	{
832	while (*head)	1082	while (*head)
833	{	1083	{
834	if (*head == elem)	1084	if (*head == elem)
…		…
839		1089
840	head = &(*head)->next;	1090	head = &(*head)->next;
841	}	1091	}
842	}	1092	}
843		1093
844	static void	1094	inline void
845	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
846	{	1096	{
847	if (w->pending)	1097	if (w->pending)
848	{	1098	{
849	pendings [w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1100	w->pending = 0;
851	}	1101	}
852	}	1102	}
853		1103
854	static void	1104	inline void
855	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
856	{	1106	{
		1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1109
857	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
858	}	1112	}
859		1113
860	static void	1114	inline void
861	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
862	{	1116	{
		1117	ev_unref (EV_A);
863	w->active = 0;	1118	w->active = 0;
864	}	1119	}
865		1120
866	/*****************************************************************************/	1121	/*****************************************************************************/
867		1122
868	void	1123	void
869	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
870	{	1125	{
871	int fd = w->fd;	1126	int fd = w->fd;
872		1127
873	if (ev_is_active (w))	1128	if (ev_is_active (w))
874	return;	1129	return;
875		1130
876	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
877		1132
878	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1136
882	fd_change (fd);	1137	fd_change (EV_A_ fd);
883	}	1138	}
884		1139
885	void	1140	void
886	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1142	{
888	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
890	return;	1145	return;
891		1146
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
894		1149
895	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
896	}	1151	}
897		1152
898	void	1153	void
899	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1155	{
901	if (ev_is_active (w))	1156	if (ev_is_active (w))
902	return;	1157	return;
903		1158
904	w->at += now;	1159	((WT)w)->at += mn_now;
905		1160
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1162
908	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
910	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
912	}
913		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
914	void	1171	void
915	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1173	{
917	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
919	return;	1176	return;
920		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
921	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
922	{	1181	{
923	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
924	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
925	}	1184	}
926		1185
927	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
928		1187
929	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
930	}	1189	}
931		1190
932	void	1191	void
933	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1193	{
935	if (ev_is_active (w))	1194	if (ev_is_active (w))
936	{	1195	{
937	if (w->repeat)	1196	if (w->repeat)
938	{	1197	{
939	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
941	}	1200	}
942	else	1201	else
943	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
944	}	1203	}
945	else if (w->repeat)	1204	else if (w->repeat)
946	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
947	}	1206	}
948		1207
949	void	1208	void
950	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1210	{
952	if (ev_is_active (w))	1211	if (ev_is_active (w))
953	return;	1212	return;
954		1213
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956		1215
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1216	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)	1217	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
960		1219
961	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
963	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
965	}
966		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
967	void	1228	void
968	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1230	{
970	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
972	return;	1233	return;
973		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
974	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
975	{	1238	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
978	}	1241	}
979		1242
980	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
981	}	1244	}
982		1245
983	void	1246	void
984	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
985	{	1248	{
986	if (ev_is_active (w))	1249	if (ev_is_active (w))
987	return;	1250	return;
988		1251
		1252	ev_start (EV_A_ (W)w, ++idlecnt);
		1253	array_needsize (idles, idlemax, idlecnt, );
		1254	idles [idlecnt - 1] = w;
		1255	}
		1256
		1257	void
		1258	ev_idle_stop (EV_P_ struct ev_idle *w)
		1259	{
		1260	ev_clear_pending (EV_A_ (W)w);
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	idles [((W)w)->active - 1] = idles [--idlecnt];
		1265	ev_stop (EV_A_ (W)w);
		1266	}
		1267
		1268	void
		1269	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1270	{
		1271	if (ev_is_active (w))
		1272	return;
		1273
		1274	ev_start (EV_A_ (W)w, ++preparecnt);
		1275	array_needsize (prepares, preparemax, preparecnt, );
		1276	prepares [preparecnt - 1] = w;
		1277	}
		1278
		1279	void
		1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1281	{
		1282	ev_clear_pending (EV_A_ (W)w);
		1283	if (ev_is_active (w))
		1284	return;
		1285
		1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1287	ev_stop (EV_A_ (W)w);
		1288	}
		1289
		1290	void
		1291	ev_check_start (EV_P_ struct ev_check *w)
		1292	{
		1293	if (ev_is_active (w))
		1294	return;
		1295
		1296	ev_start (EV_A_ (W)w, ++checkcnt);
		1297	array_needsize (checks, checkmax, checkcnt, );
		1298	checks [checkcnt - 1] = w;
		1299	}
		1300
		1301	void
		1302	ev_check_stop (EV_P_ struct ev_check *w)
		1303	{
		1304	ev_clear_pending (EV_A_ (W)w);
		1305	if (ev_is_active (w))
		1306	return;
		1307
		1308	checks [((W)w)->active - 1] = checks [--checkcnt];
		1309	ev_stop (EV_A_ (W)w);
		1310	}
		1311
		1312	#ifndef SA_RESTART
		1313	# define SA_RESTART 0
		1314	#endif
		1315
		1316	void
		1317	ev_signal_start (EV_P_ struct ev_signal *w)
		1318	{
		1319	#if EV_MULTIPLICITY
		1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1321	#endif
		1322	if (ev_is_active (w))
		1323	return;
		1324
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1326
991	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1330
995	if (!w->next)	1331	if (!((WL)w)->next)
996	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
997	struct sigaction sa;	1336	struct sigaction sa;
998	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
1002	}	1342	}
1003	}	1343	}
1004		1344
1005	void	1345	void
1006	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1347	{
1008	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
1010	return;	1350	return;
1011		1351
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
1014		1354
1015	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
1017	}	1357	}
1018		1358
1019	void	1359	void
1020	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
1021	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
1022	if (ev_is_active (w))	1365	if (ev_is_active (w))
1023	return;	1366	return;
1024		1367
1025	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
1026	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1027	idles [idlecnt - 1] = w;
1028	}	1370	}
1029		1371
1030	void	1372	void
1031	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
1032	{	1374	{
1033	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
1034	if (ev_is_active (w))	1376	if (ev_is_active (w))
1035	return;	1377	return;
1036		1378
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)
1087	{
1088	if (ev_is_active (w))
1089	return;
1090
1091	ev_start ((W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}
1094
1095	void
1096	ev_child_stop (struct ev_child *w)
1097	{
1098	ev_clear_pending ((W)w);
1099	if (ev_is_active (w))
1100	return;
1101
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1104	}	1381	}
1105		1382
1106	/*****************************************************************************/	1383	/*****************************************************************************/
1107		1384
1108	struct ev_once	1385	struct ev_once
…		…
1112	void (*cb)(int revents, void *arg);	1389	void (*cb)(int revents, void *arg);
1113	void *arg;	1390	void *arg;
1114	};	1391	};
1115		1392
1116	static void	1393	static void
1117	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1395	{
1119	void (*cb)(int revents, void *arg) = once->cb;	1396	void (*cb)(int revents, void *arg) = once->cb;
1120	void *arg = once->arg;	1397	void *arg = once->arg;
1121		1398
1122	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1401	free (once);
1125		1402
1126	cb (revents, arg);	1403	cb (revents, arg);
1127	}	1404	}
1128		1405
1129	static void	1406	static void
1130	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1408	{
1132	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1409	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1133	}	1410	}
1134		1411
1135	static void	1412	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1414	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1415	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1139	}	1416	}
1140		1417
1141	void	1418	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1143	{	1420	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1145		1422
1146	if (!once)	1423	if (!once)
1147	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1152		1429
1153	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1431	if (fd >= 0)
1155	{	1432	{
1156	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1158	}	1435	}
1159		1436
1160	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1438	if (timeout >= 0.)
1162	{	1439	{
1163	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1165	}	1442	}
1166	}	1443	}
1167	}	1444	}
1168		1445
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}
1246
1247	#endif
1248
1249
1250
1251

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