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Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.68 by root, Mon Nov 5 20:19:00 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
…		…
56		80
57	#ifndef EV_USE_SELECT	81	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	82	# define EV_USE_SELECT 1
59	#endif	83	#endif
60		84
		85	#ifndef EV_USE_POLL
		86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		87	#endif
		88
61	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
62	# 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
63	#endif	103	#endif
64		104
65	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
66	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
67	#endif	107	#endif
…		…
96	#endif	136	#endif
97		137
98	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
99	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
100		140
		141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		143
101	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
102	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
103	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
104		147
105	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
106	ev_tstamp ev_now;
107	int ev_method;
108		149
109	static int have_monotonic; /* runtime */	150	#if WIN32
110		151	/* note: the comment below could not be substantiated, but what would I care */
111	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
112	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
113	static void (*method_poll)(ev_tstamp timeout);	154	#endif
114		155
115	/*****************************************************************************/	156	/*****************************************************************************/
116		157
117	ev_tstamp	158	typedef struct
		159	{
		160	WL 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
118	ev_time (void)	192	ev_time (void)
119	{	193	{
120	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
121	struct timespec ts;	195	struct timespec ts;
122	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
126	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
127	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
128	#endif	202	#endif
129	}	203	}
130		204
131	static ev_tstamp	205	inline ev_tstamp
132	get_clock (void)	206	get_clock (void)
133	{	207	{
134	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
135	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
136	{	210	{
…		…
139	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
140	}	214	}
141	#endif	215	#endif
142		216
143	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
144	}	224	}
145		225
146	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
147		227
148	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
158	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
159	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
160	cur = newcnt; \	240	cur = newcnt; \
161	}	241	}
162		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
163	/*****************************************************************************/	254	/*****************************************************************************/
164
165	typedef struct
166	{
167	struct ev_io *head;
168	unsigned char events;
169	unsigned char reify;
170	} ANFD;
171
172	static ANFD *anfds;
173	static int anfdmax;
174		255
175	static void	256	static void
176	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
177	{	258	{
178	while (count--)	259	while (count--)
…		…
183		264
184	++base;	265	++base;
185	}	266	}
186	}	267	}
187		268
188	typedef struct
189	{
190	W w;
191	int events;
192	} ANPENDING;
193
194	static ANPENDING *pendings;
195	static int pendingmax, pendingcnt;
196
197	static void	269	static void
198	event (W w, int events)	270	event (EV_P_ W w, int events)
199	{	271	{
200	if (w->pending)	272	if (w->pending)
201	{	273	{
202	pendings [w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
203	return;	275	return;
204	}	276	}
205		277
206	w->pending = ++pendingcnt;	278	w->pending = ++pendingcnt [ABSPRI (w)];
207	array_needsize (pendings, pendingmax, pendingcnt, );	279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
208	pendings [pendingcnt - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
209	pendings [pendingcnt - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
210	}	282	}
211		283
212	static void	284	static void
213	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
214	{	286	{
215	int i;	287	int i;
216		288
217	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
218	event (events [i], type);	290	event (EV_A_ events [i], type);
219	}	291	}
220		292
221	static void	293	static void
222	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
223	{	295	{
224	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
225	struct ev_io *w;	297	struct ev_io *w;
226		298
227	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
228	{	300	{
229	int ev = w->events & events;	301	int ev = w->events & events;
230		302
231	if (ev)	303	if (ev)
232	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
233	}	305	}
234	}	306	}
235		307
236	/*****************************************************************************/	308	/*****************************************************************************/
237		309
238	static int *fdchanges;
239	static int fdchangemax, fdchangecnt;
240
241	static void	310	static void
242	fd_reify (void)	311	fd_reify (EV_P)
243	{	312	{
244	int i;	313	int i;
245		314
246	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
247	{	316	{
…		…
249	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	319	struct ev_io *w;
251		320
252	int events = 0;	321	int events = 0;
253		322
254	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
255	events |= w->events;	324	events |= w->events;
256		325
257	anfd->reify = 0;	326	anfd->reify = 0;
258		327
259	if (anfd->events != events)
260	{
261	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
262	anfd->events = events;	329	anfd->events = events;
263	}
264	}	330	}
265		331
266	fdchangecnt = 0;	332	fdchangecnt = 0;
267	}	333	}
268		334
269	static void	335	static void
270	fd_change (int fd)	336	fd_change (EV_P_ int fd)
271	{	337	{
272	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
273	return;	339	return;
274		340
275	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
277	++fdchangecnt;	343	++fdchangecnt;
278	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
279	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
280	}	346	}
281		347
		348	static void
		349	fd_kill (EV_P_ int fd)
		350	{
		351	struct ev_io *w;
		352
		353	while ((w = (struct ev_io *)anfds [fd].head))
		354	{
		355	ev_io_stop (EV_A_ w);
		356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		357	}
		358	}
		359
282	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
283	static void	361	static void
284	fd_recheck (void)	362	fd_ebadf (EV_P)
285	{	363	{
286	int fd;	364	int fd;
287		365
288	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
289	if (anfds [fd].events)	367	if (anfds [fd].events)
290	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
291	while (anfds [fd].head)	369	fd_kill (EV_A_ fd);
		370	}
		371
		372	/* called on ENOMEM in select/poll to kill some fds and retry */
		373	static void
		374	fd_enomem (EV_P)
		375	{
		376	int fd;
		377
		378	for (fd = anfdmax; fd--; )
		379	if (anfds [fd].events)
292	{	380	{
293	ev_io_stop (anfds [fd].head);	381	fd_kill (EV_A_ fd);
294	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	382	return;
295	}	383	}
		384	}
		385
		386	/* susually called after fork if method needs to re-arm all fds from scratch */
		387	static void
		388	fd_rearm_all (EV_P)
		389	{
		390	int fd;
		391
		392	/* this should be highly optimised to not do anything but set a flag */
		393	for (fd = 0; fd < anfdmax; ++fd)
		394	if (anfds [fd].events)
		395	{
		396	anfds [fd].events = 0;
		397	fd_change (EV_A_ fd);
		398	}
296	}	399	}
297		400
298	/*****************************************************************************/	401	/*****************************************************************************/
299		402
300	static struct ev_timer **timers;
301	static int timermax, timercnt;
302
303	static struct ev_periodic **periodics;
304	static int periodicmax, periodiccnt;
305
306	static void	403	static void
307	upheap (WT *timers, int k)	404	upheap (WT *heap, int k)
308	{	405	{
309	WT w = timers [k];	406	WT w = heap [k];
310		407
311	while (k && timers [k >> 1]->at > w->at)	408	while (k && heap [k >> 1]->at > w->at)
312	{	409	{
313	timers [k] = timers [k >> 1];	410	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	411	((W)heap [k])->active = k + 1;
315	k >>= 1;	412	k >>= 1;
316	}	413	}
317		414
318	timers [k] = w;	415	heap [k] = w;
319	timers [k]->active = k + 1;	416	((W)heap [k])->active = k + 1;
320		417
321	}	418	}
322		419
323	static void	420	static void
324	downheap (WT *timers, int N, int k)	421	downheap (WT *heap, int N, int k)
325	{	422	{
326	WT w = timers [k];	423	WT w = heap [k];
327		424
328	while (k < (N >> 1))	425	while (k < (N >> 1))
329	{	426	{
330	int j = k << 1;	427	int j = k << 1;
331		428
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	429	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	430	++j;
334		431
335	if (w->at <= timers [j]->at)	432	if (w->at <= heap [j]->at)
336	break;	433	break;
337		434
338	timers [k] = timers [j];	435	heap [k] = heap [j];
339	timers [k]->active = k + 1;	436	((W)heap [k])->active = k + 1;
340	k = j;	437	k = j;
341	}	438	}
342		439
343	timers [k] = w;	440	heap [k] = w;
344	timers [k]->active = k + 1;	441	((W)heap [k])->active = k + 1;
345	}	442	}
346		443
347	/*****************************************************************************/	444	/*****************************************************************************/
348		445
349	typedef struct	446	typedef struct
350	{	447	{
351	struct ev_signal *head;	448	WL head;
352	sig_atomic_t volatile gotsig;	449	sig_atomic_t volatile gotsig;
353	} ANSIG;	450	} ANSIG;
354		451
355	static ANSIG *signals;	452	static ANSIG *signals;
356	static int signalmax;	453	static int signalmax;
…		…
372	}	469	}
373		470
374	static void	471	static void
375	sighandler (int signum)	472	sighandler (int signum)
376	{	473	{
		474	#if WIN32
		475	signal (signum, sighandler);
		476	#endif
		477
377	signals [signum - 1].gotsig = 1;	478	signals [signum - 1].gotsig = 1;
378		479
379	if (!gotsig)	480	if (!gotsig)
380	{	481	{
		482	int old_errno = errno;
381	gotsig = 1;	483	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	484	write (sigpipe [1], &signum, 1);
		485	errno = old_errno;
383	}	486	}
384	}	487	}
385		488
386	static void	489	static void
387	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	491	{
389	struct ev_signal *w;	492	WL w;
390	int signum;	493	int signum;
391		494
392	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	496	gotsig = 0;
394		497
…		…
396	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
397	{	500	{
398	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
399		502
400	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
401	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
402	}	505	}
403	}	506	}
404		507
405	static void	508	static void
406	siginit (void)	509	siginit (EV_P)
407	{	510	{
		511	#ifndef WIN32
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410		514
411	/* rather than sort out wether we really need nb, set it */	515	/* rather than sort out wether we really need nb, set it */
412	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		518	#endif
414		519
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	523	}
418		524
419	/*****************************************************************************/	525	/*****************************************************************************/
420		526
421	static struct ev_idle **idles;	527	#ifndef WIN32
422	static int idlemax, idlecnt;
423
424	static struct ev_prepare **prepares;
425	static int preparemax, preparecnt;
426
427	static struct ev_check **checks;
428	static int checkmax, checkcnt;
429
430	/*****************************************************************************/
431		528
432	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
433	static struct ev_signal childev;	530	static struct ev_signal childev;
434		531
435	#ifndef WCONTINUED	532	#ifndef WCONTINUED
436	# define WCONTINUED 0	533	# define WCONTINUED 0
437	#endif	534	#endif
438		535
439	static void	536	static void
440	childcb (struct ev_signal *sw, int revents)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	538	{
442	struct ev_child *w;	539	struct ev_child *w;
		540
		541	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		542	if (w->pid == pid || !w->pid)
		543	{
		544	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		545	w->rpid = pid;
		546	w->rstatus = status;
		547	event (EV_A_ (W)w, EV_CHILD);
		548	}
		549	}
		550
		551	static void
		552	childcb (EV_P_ struct ev_signal *sw, int revents)
		553	{
443	int pid, status;	554	int pid, status;
444		555
445	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	556	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	557	{
447	if (w->pid == pid || !w->pid)	558	/* make sure we are called again until all childs have been reaped */
448	{	559	event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	560
450	event ((W)w, EV_CHILD);	561	child_reap (EV_A_ sw, pid, pid, status);
451	}	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		563	}
452	}	564	}
		565
		566	#endif
453		567
454	/*****************************************************************************/	568	/*****************************************************************************/
455		569
		570	#if EV_USE_KQUEUE
		571	# include "ev_kqueue.c"
		572	#endif
456	#if EV_USE_EPOLL	573	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	574	# include "ev_epoll.c"
458	#endif	575	#endif
		576	#if EV_USE_POLL
		577	# include "ev_poll.c"
		578	#endif
459	#if EV_USE_SELECT	579	#if EV_USE_SELECT
460	# include "ev_select.c"	580	# include "ev_select.c"
461	#endif	581	#endif
462		582
463	int	583	int
…		…
470	ev_version_minor (void)	590	ev_version_minor (void)
471	{	591	{
472	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
473	}	593	}
474		594
475	int ev_init (int flags)	595	/* return true if we are running with elevated privileges and should ignore env variables */
		596	static int
		597	enable_secure (void)
476	{	598	{
		599	#ifdef WIN32
		600	return 0;
		601	#else
		602	return getuid () != geteuid ()
		603	|| getgid () != getegid ();
		604	#endif
		605	}
		606
		607	int
		608	ev_method (EV_P)
		609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
477	if (!ev_method)	616	if (!method)
478	{	617	{
479	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
480	{	619	{
481	struct timespec ts;	620	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	622	have_monotonic = 1;
484	}	623	}
485	#endif	624	#endif
486		625
487	ev_now = ev_time ();	626	rt_now = ev_time ();
488	now = get_clock ();	627	mn_now = get_clock ();
489	now_floor = now;	628	now_floor = mn_now;
490	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
491		630
492	if (pipe (sigpipe))	631	if (methods == EVMETHOD_AUTO)
493	return 0;	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
494		633	methods = atoi (getenv ("LIBEV_METHODS"));
		634	else
495	ev_method = EVMETHOD_NONE;	635	methods = EVMETHOD_ANY;
		636
		637	method = 0;
		638	#if EV_USE_WIN32
		639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		640	#endif
		641	#if EV_USE_KQUEUE
		642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		643	#endif
496	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		646	#endif
		647	#if EV_USE_POLL
		648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
498	#endif	649	#endif
499	#if EV_USE_SELECT	650	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
501	#endif	652	#endif
		653	}
		654	}
502		655
		656	void
		657	loop_destroy (EV_P)
		658	{
		659	int i;
		660
		661	#if EV_USE_WIN32
		662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		663	#endif
		664	#if EV_USE_KQUEUE
		665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		666	#endif
		667	#if EV_USE_EPOLL
		668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		669	#endif
		670	#if EV_USE_POLL
		671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		672	#endif
		673	#if EV_USE_SELECT
		674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		675	#endif
		676
		677	for (i = NUMPRI; i--; )
		678	array_free (pending, [i]);
		679
		680	array_free (fdchange, );
		681	array_free (timer, );
		682	array_free (periodic, );
		683	array_free (idle, );
		684	array_free (prepare, );
		685	array_free (check, );
		686
		687	method = 0;
		688	/*TODO*/
		689	}
		690
		691	void
		692	loop_fork (EV_P)
		693	{
		694	/*TODO*/
		695	#if EV_USE_EPOLL
		696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		697	#endif
		698	#if EV_USE_KQUEUE
		699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		700	#endif
		701	}
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop *
		705	ev_loop_new (int methods)
		706	{
		707	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		708
		709	loop_init (EV_A_ methods);
		710
		711	if (ev_method (EV_A))
		712	return loop;
		713
		714	return 0;
		715	}
		716
		717	void
		718	ev_loop_destroy (EV_P)
		719	{
		720	loop_destroy (EV_A);
		721	free (loop);
		722	}
		723
		724	void
		725	ev_loop_fork (EV_P)
		726	{
		727	loop_fork (EV_A);
		728	}
		729
		730	#endif
		731
		732	#if EV_MULTIPLICITY
		733	struct ev_loop default_loop_struct;
		734	static struct ev_loop *default_loop;
		735
		736	struct ev_loop *
		737	#else
		738	static int default_loop;
		739
		740	int
		741	#endif
		742	ev_default_loop (int methods)
		743	{
		744	if (sigpipe [0] == sigpipe [1])
		745	if (pipe (sigpipe))
		746	return 0;
		747
		748	if (!default_loop)
		749	{
		750	#if EV_MULTIPLICITY
		751	struct ev_loop *loop = default_loop = &default_loop_struct;
		752	#else
		753	default_loop = 1;
		754	#endif
		755
		756	loop_init (EV_A_ methods);
		757
503	if (ev_method)	758	if (ev_method (EV_A))
504	{	759	{
505	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
		761	ev_set_priority (&sigev, EV_MAXPRI);
506	siginit ();	762	siginit (EV_A);
507		763
		764	#ifndef WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
		766	ev_set_priority (&childev, EV_MAXPRI);
509	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
		769	#endif
510	}	770	}
		771	else
		772	default_loop = 0;
511	}	773	}
512		774
513	return ev_method;	775	return default_loop;
514	}	776	}
515		777
516	/*****************************************************************************/
517
518	void	778	void
519	ev_fork_prepare (void)	779	ev_default_destroy (void)
520	{	780	{
521	/* nop */	781	#if EV_MULTIPLICITY
522	}	782	struct ev_loop *loop = default_loop;
523
524	void
525	ev_fork_parent (void)
526	{
527	/* nop */
528	}
529
530	void
531	ev_fork_child (void)
532	{
533	#if EV_USE_EPOLL
534	if (ev_method == EVMETHOD_EPOLL)
535	epoll_postfork_child ();
536	#endif	783	#endif
537		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
538	ev_io_stop (&sigev);	789	ev_io_stop (EV_A_ &sigev);
		790
		791	close (sigpipe [0]); sigpipe [0] = 0;
		792	close (sigpipe [1]); sigpipe [1] = 0;
		793
		794	loop_destroy (EV_A);
		795	}
		796
		797	void
		798	ev_default_fork (void)
		799	{
		800	#if EV_MULTIPLICITY
		801	struct ev_loop *loop = default_loop;
		802	#endif
		803
		804	loop_fork (EV_A);
		805
		806	ev_io_stop (EV_A_ &sigev);
539	close (sigpipe [0]);	807	close (sigpipe [0]);
540	close (sigpipe [1]);	808	close (sigpipe [1]);
541	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
542	siginit ();	812	siginit (EV_A);
543	}	813	}
544		814
545	/*****************************************************************************/	815	/*****************************************************************************/
546		816
547	static void	817	static void
548	call_pending (void)	818	call_pending (EV_P)
549	{	819	{
		820	int pri;
		821
		822	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	823	while (pendingcnt [pri])
551	{	824	{
552	ANPENDING *p = pendings + --pendingcnt;	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		826
554	if (p->w)	827	if (p->w)
555	{	828	{
556	p->w->pending = 0;	829	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
558	}	831	}
559	}	832	}
560	}	833	}
561		834
562	static void	835	static void
563	timers_reify (void)	836	timers_reify (EV_P)
564	{	837	{
565	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
566	{	839	{
567	struct ev_timer *w = timers [0];	840	struct ev_timer *w = timers [0];
		841
		842	assert (("inactive timer on timer heap detected", ev_is_active (w)));
568		843
569	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
570	if (w->repeat)	845	if (w->repeat)
571	{	846	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	847	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
573	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
574	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
575	}	850	}
576	else	851	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		853
579	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
580	}	855	}
581	}	856	}
582		857
583	static void	858	static void
584	periodics_reify (void)	859	periodics_reify (EV_P)
585	{	860	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
587	{	862	{
588	struct ev_periodic *w = periodics [0];	863	struct ev_periodic *w = periodics [0];
		864
		865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
589		866
590	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
591	if (w->interval)	868	if (w->interval)
592	{	869	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	870	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
594	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
595	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
596	}	873	}
597	else	874	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		876
600	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
601	}	878	}
602	}	879	}
603		880
604	static void	881	static void
605	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
606	{	883	{
607	int i;	884	int i;
608		885
609	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
611	{	888	{
612	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
613		890
614	if (w->interval)	891	if (w->interval)
615	{	892	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
617		894
618	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
619	{	896	{
620	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
621	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
622		899
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}	901	}
625	}	902	}
626	}	903	}
627	}	904	}
628		905
629	static int	906	inline int
630	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
631	{	908	{
632	now = get_clock ();	909	mn_now = get_clock ();
633		910
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	912	{
636	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
637	return 0;	914	return 0;
638	}	915	}
639	else	916	else
640	{	917	{
641	now_floor = now;	918	now_floor = mn_now;
642	ev_now = ev_time ();	919	rt_now = ev_time ();
643	return 1;	920	return 1;
644	}	921	}
645	}	922	}
646		923
647	static void	924	static void
648	time_update (void)	925	time_update (EV_P)
649	{	926	{
650	int i;	927	int i;
651		928
652	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
654	{	931	{
655	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
656	{	933	{
657	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
658		935
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	936	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	937	{
661	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
662		939
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	941	return; /* all is well */
665		942
666	ev_now = ev_time ();	943	rt_now = ev_time ();
667	now = get_clock ();	944	mn_now = get_clock ();
668	now_floor = now;	945	now_floor = mn_now;
669	}	946	}
670		947
671	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
672	/* no timer adjustment, as the monotonic clock doesn't jump */	949	/* no timer adjustment, as the monotonic clock doesn't jump */
		950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	951	}
674	}	952	}
675	else	953	else
676	#endif	954	#endif
677	{	955	{
678	ev_now = ev_time ();	956	rt_now = ev_time ();
679		957
680	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	958	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	959	{
682	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
683		961
684	/* adjust timers. this is easy, as the offset is the same for all */	962	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
687	}	965	}
688		966
689	now = ev_now;	967	mn_now = rt_now;
690	}	968	}
691	}	969	}
692		970
693	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
694		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
695	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
696	{	987	{
697	double block;	988	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
699		990
700	do	991	do
701	{	992	{
702	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
704	{	995	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	997	call_pending (EV_A);
707	}	998	}
708		999
709	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
710	fd_reify ();	1001	fd_reify (EV_A);
711		1002
712	/* calculate blocking time */	1003	/* calculate blocking time */
713		1004
714	/* we only need this for !monotonic clockor timers, but as we basically	1005	/* we only need this for !monotonic clockor timers, but as we basically
715	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
718	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
719	else	1010	else
720	#endif	1011	#endif
721	{	1012	{
722	ev_now = ev_time ();	1013	rt_now = ev_time ();
723	now = ev_now;	1014	mn_now = rt_now;
724	}	1015	}
725		1016
726	if (flags & EVLOOP_NONBLOCK || idlecnt)	1017	if (flags & EVLOOP_NONBLOCK || idlecnt)
727	block = 0.;	1018	block = 0.;
728	else	1019	else
729	{	1020	{
730	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
731		1022
732	if (timercnt)	1023	if (timercnt)
733	{	1024	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
735	if (block > to) block = to;	1026	if (block > to) block = to;
736	}	1027	}
737		1028
738	if (periodiccnt)	1029	if (periodiccnt)
739	{	1030	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
741	if (block > to) block = to;	1032	if (block > to) block = to;
742	}	1033	}
743		1034
744	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
745	}	1036	}
746		1037
747	method_poll (block);	1038	method_poll (EV_A_ block);
748		1039
749	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
750	time_update ();	1041	time_update (EV_A);
751		1042
752	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
754	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
755		1046
756	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	1048	if (!pendingcnt)
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		1050
760	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
761	if (checkcnt)	1052	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		1054
764	call_pending ();	1055	call_pending (EV_A);
765	}	1056	}
766	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
767		1058
768	if (ev_loop_done != 2)	1059	if (loop_done != 2)
769	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
770	}	1067	}
771		1068
772	/*****************************************************************************/	1069	/*****************************************************************************/
773		1070
774	static void	1071	inline void
775	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
776	{	1073	{
777	elem->next = *head;	1074	elem->next = *head;
778	*head = elem;	1075	*head = elem;
779	}	1076	}
780		1077
781	static void	1078	inline void
782	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
783	{	1080	{
784	while (*head)	1081	while (*head)
785	{	1082	{
786	if (*head == elem)	1083	if (*head == elem)
…		…
791		1088
792	head = &(*head)->next;	1089	head = &(*head)->next;
793	}	1090	}
794	}	1091	}
795		1092
796	static void	1093	inline void
797	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
798	{	1095	{
799	if (w->pending)	1096	if (w->pending)
800	{	1097	{
801	pendings [w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1099	w->pending = 0;
803	}	1100	}
804	}	1101	}
805		1102
806	static void	1103	inline void
807	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
808	{	1105	{
		1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1108
809	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
810	}	1111	}
811		1112
812	static void	1113	inline void
813	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
814	{	1115	{
		1116	ev_unref (EV_A);
815	w->active = 0;	1117	w->active = 0;
816	}	1118	}
817		1119
818	/*****************************************************************************/	1120	/*****************************************************************************/
819		1121
820	void	1122	void
821	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
822	{	1124	{
823	int fd = w->fd;	1125	int fd = w->fd;
824		1126
825	if (ev_is_active (w))	1127	if (ev_is_active (w))
826	return;	1128	return;
827		1129
828	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
829		1131
830	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1135
834	fd_change (fd);	1136	fd_change (EV_A_ fd);
835	}	1137	}
836		1138
837	void	1139	void
838	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1141	{
840	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
842	return;	1144	return;
843		1145
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
846		1148
847	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
848	}	1150	}
849		1151
850	void	1152	void
851	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1154	{
853	if (ev_is_active (w))	1155	if (ev_is_active (w))
854	return;	1156	return;
855		1157
856	w->at += now;	1158	((WT)w)->at += mn_now;
857		1159
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1161
860	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
862	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
864	}
865		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
866	void	1170	void
867	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1172	{
869	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
871	return;	1175	return;
872		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
873	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
874	{	1180	{
875	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
876	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
877	}	1183	}
878		1184
879	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
880		1186
881	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
882	}	1188	}
883		1189
884	void	1190	void
885	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1192	{
887	if (ev_is_active (w))	1193	if (ev_is_active (w))
888	{	1194	{
889	if (w->repeat)	1195	if (w->repeat)
890	{	1196	{
891	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
893	}	1199	}
894	else	1200	else
895	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
896	}	1202	}
897	else if (w->repeat)	1203	else if (w->repeat)
898	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
899	}	1205	}
900		1206
901	void	1207	void
902	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1209	{
904	if (ev_is_active (w))	1210	if (ev_is_active (w))
905	return;	1211	return;
906		1212
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1213	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908		1214
909	/* this formula differs from the one in periodic_reify because we do not always round up */	1215	/* this formula differs from the one in periodic_reify because we do not always round up */
910	if (w->interval)	1216	if (w->interval)
911	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
912		1218
913	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
915	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
917	}
918		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
919	void	1227	void
920	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1229	{
922	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
924	return;	1232	return;
925		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
926	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
927	{	1237	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
930	}	1240	}
931		1241
932	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
933	}	1243	}
934		1244
935	void	1245	void
936	ev_signal_start (struct ev_signal *w)	1246	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1247	{
938	if (ev_is_active (w))	1248	if (ev_is_active (w))
939	return;	1249	return;
940		1250
		1251	ev_start (EV_A_ (W)w, ++idlecnt);
		1252	array_needsize (idles, idlemax, idlecnt, );
		1253	idles [idlecnt - 1] = w;
		1254	}
		1255
		1256	void
		1257	ev_idle_stop (EV_P_ struct ev_idle *w)
		1258	{
		1259	ev_clear_pending (EV_A_ (W)w);
		1260	if (ev_is_active (w))
		1261	return;
		1262
		1263	idles [((W)w)->active - 1] = idles [--idlecnt];
		1264	ev_stop (EV_A_ (W)w);
		1265	}
		1266
		1267	void
		1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1269	{
		1270	if (ev_is_active (w))
		1271	return;
		1272
		1273	ev_start (EV_A_ (W)w, ++preparecnt);
		1274	array_needsize (prepares, preparemax, preparecnt, );
		1275	prepares [preparecnt - 1] = w;
		1276	}
		1277
		1278	void
		1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1280	{
		1281	ev_clear_pending (EV_A_ (W)w);
		1282	if (ev_is_active (w))
		1283	return;
		1284
		1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1286	ev_stop (EV_A_ (W)w);
		1287	}
		1288
		1289	void
		1290	ev_check_start (EV_P_ struct ev_check *w)
		1291	{
		1292	if (ev_is_active (w))
		1293	return;
		1294
		1295	ev_start (EV_A_ (W)w, ++checkcnt);
		1296	array_needsize (checks, checkmax, checkcnt, );
		1297	checks [checkcnt - 1] = w;
		1298	}
		1299
		1300	void
		1301	ev_check_stop (EV_P_ struct ev_check *w)
		1302	{
		1303	ev_clear_pending (EV_A_ (W)w);
		1304	if (ev_is_active (w))
		1305	return;
		1306
		1307	checks [((W)w)->active - 1] = checks [--checkcnt];
		1308	ev_stop (EV_A_ (W)w);
		1309	}
		1310
		1311	#ifndef SA_RESTART
		1312	# define SA_RESTART 0
		1313	#endif
		1314
		1315	void
		1316	ev_signal_start (EV_P_ struct ev_signal *w)
		1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
		1321	if (ev_is_active (w))
		1322	return;
		1323
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1325
943	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1329
947	if (!w->next)	1330	if (!((WL)w)->next)
948	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
949	struct sigaction sa;	1335	struct sigaction sa;
950	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
954	}	1341	}
955	}	1342	}
956		1343
957	void	1344	void
958	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1346	{
960	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
962	return;	1349	return;
963		1350
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
966		1353
967	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
969	}	1356	}
970		1357
971	void	1358	void
972	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
973	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
974	if (ev_is_active (w))	1364	if (ev_is_active (w))
975	return;	1365	return;
976		1366
977	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
978	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
979	idles [idlecnt - 1] = w;
980	}	1369	}
981		1370
982	void	1371	void
983	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1373	{
985	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1375	if (ev_is_active (w))
987	return;	1376	return;
988		1377
989	idles [w->active - 1] = idles [--idlecnt];
990	ev_stop ((W)w);
991	}
992
993	void
994	ev_prepare_start (struct ev_prepare *w)
995	{
996	if (ev_is_active (w))
997	return;
998
999	ev_start ((W)w, ++preparecnt);
1000	array_needsize (prepares, preparemax, preparecnt, );
1001	prepares [preparecnt - 1] = w;
1002	}
1003
1004	void
1005	ev_prepare_stop (struct ev_prepare *w)
1006	{
1007	ev_clear_pending ((W)w);
1008	if (ev_is_active (w))
1009	return;
1010
1011	prepares [w->active - 1] = prepares [--preparecnt];
1012	ev_stop ((W)w);
1013	}
1014
1015	void
1016	ev_check_start (struct ev_check *w)
1017	{
1018	if (ev_is_active (w))
1019	return;
1020
1021	ev_start ((W)w, ++checkcnt);
1022	array_needsize (checks, checkmax, checkcnt, );
1023	checks [checkcnt - 1] = w;
1024	}
1025
1026	void
1027	ev_check_stop (struct ev_check *w)
1028	{
1029	ev_clear_pending ((W)w);
1030	if (ev_is_active (w))
1031	return;
1032
1033	checks [w->active - 1] = checks [--checkcnt];
1034	ev_stop ((W)w);
1035	}
1036
1037	void
1038	ev_child_start (struct ev_child *w)
1039	{
1040	if (ev_is_active (w))
1041	return;
1042
1043	ev_start ((W)w, 1);
1044	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045	}
1046
1047	void
1048	ev_child_stop (struct ev_child *w)
1049	{
1050	ev_clear_pending ((W)w);
1051	if (ev_is_active (w))
1052	return;
1053
1054	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1056	}	1380	}
1057		1381
1058	/*****************************************************************************/	1382	/*****************************************************************************/
1059		1383
1060	struct ev_once	1384	struct ev_once
…		…
1064	void (*cb)(int revents, void *arg);	1388	void (*cb)(int revents, void *arg);
1065	void *arg;	1389	void *arg;
1066	};	1390	};
1067		1391
1068	static void	1392	static void
1069	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1394	{
1071	void (*cb)(int revents, void *arg) = once->cb;	1395	void (*cb)(int revents, void *arg) = once->cb;
1072	void *arg = once->arg;	1396	void *arg = once->arg;
1073		1397
1074	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1400	free (once);
1077		1401
1078	cb (revents, arg);	1402	cb (revents, arg);
1079	}	1403	}
1080		1404
1081	static void	1405	static void
1082	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1407	{
1084	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1408	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085	}	1409	}
1086		1410
1087	static void	1411	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1413	{
1090	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1414	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091	}	1415	}
1092		1416
1093	void	1417	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1418	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095	{	1419	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1097		1421
1098	if (!once)	1422	if (!once)
1099	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1423	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1104		1428
1105	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1430	if (fd >= 0)
1107	{	1431	{
1108	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1110	}	1434	}
1111		1435
1112	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1437	if (timeout >= 0.)
1114	{	1438	{
1115	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1117	}	1441	}
1118	}	1442	}
1119	}	1443	}
1120		1444
1121	/*****************************************************************************/
1122
1123	#if 0
1124
1125	struct ev_io wio;
1126
1127	static void
1128	sin_cb (struct ev_io *w, int revents)
1129	{
1130	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1131	}
1132
1133	static void
1134	ocb (struct ev_timer *w, int revents)
1135	{
1136	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1137	ev_timer_stop (w);
1138	ev_timer_start (w);
1139	}
1140
1141	static void
1142	scb (struct ev_signal *w, int revents)
1143	{
1144	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1145	ev_io_stop (&wio);
1146	ev_io_start (&wio);
1147	}
1148
1149	static void
1150	gcb (struct ev_signal *w, int revents)
1151	{
1152	fprintf (stderr, "generic %x\n", revents);
1153
1154	}
1155
1156	int main (void)
1157	{
1158	ev_init (0);
1159
1160	ev_io_init (&wio, sin_cb, 0, EV_READ);
1161	ev_io_start (&wio);
1162
1163	struct ev_timer t[10000];
1164
1165	#if 0
1166	int i;
1167	for (i = 0; i < 10000; ++i)
1168	{
1169	struct ev_timer *w = t + i;
1170	ev_watcher_init (w, ocb, i);
1171	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1172	ev_timer_start (w);
1173	if (drand48 () < 0.5)
1174	ev_timer_stop (w);
1175	}
1176	#endif
1177
1178	struct ev_timer t1;
1179	ev_timer_init (&t1, ocb, 5, 10);
1180	ev_timer_start (&t1);
1181
1182	struct ev_signal sig;
1183	ev_signal_init (&sig, scb, SIGQUIT);
1184	ev_signal_start (&sig);
1185
1186	struct ev_check cw;
1187	ev_check_init (&cw, gcb);
1188	ev_check_start (&cw);
1189
1190	struct ev_idle iw;
1191	ev_idle_init (&iw, gcb);
1192	ev_idle_start (&iw);
1193
1194	ev_loop (0);
1195
1196	return 0;
1197	}
1198
1199	#endif
1200
1201
1202
1203

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