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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 1.67 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
…		…
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	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
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	close (fd);
294	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	382	fd_kill (EV_A_ fd);
		383	return;
295	}	384	}
		385	}
		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	}
296	}	400	}
297		401
298	/*****************************************************************************/	402	/*****************************************************************************/
299		403
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	404	static void
307	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
308	{	406	{
309	WT w = timers [k];	407	WT w = heap [k];
310		408
311	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
312	{	410	{
313	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
315	k >>= 1;	413	k >>= 1;
316	}	414	}
317		415
318	timers [k] = w;	416	heap [k] = w;
319	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
320		418
321	}	419	}
322		420
323	static void	421	static void
324	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
325	{	423	{
326	WT w = timers [k];	424	WT w = heap [k];
327		425
328	while (k < (N >> 1))	426	while (k < (N >> 1))
329	{	427	{
330	int j = k << 1;	428	int j = k << 1;
331		429
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	431	++j;
334		432
335	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
336	break;	434	break;
337		435
338	timers [k] = timers [j];	436	heap [k] = heap [j];
339	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
340	k = j;	438	k = j;
341	}	439	}
342		440
343	timers [k] = w;	441	heap [k] = w;
344	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
345	}	443	}
346		444
347	/*****************************************************************************/	445	/*****************************************************************************/
348		446
349	typedef struct	447	typedef struct
350	{	448	{
351	struct ev_signal *head;	449	struct ev_watcher_list *head;
352	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
353	} ANSIG;	451	} ANSIG;
354		452
355	static ANSIG *signals;	453	static ANSIG *signals;
356	static int signalmax;	454	static int signalmax;
…		…
372	}	470	}
373		471
374	static void	472	static void
375	sighandler (int signum)	473	sighandler (int signum)
376	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
377	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
378		480
379	if (!gotsig)	481	if (!gotsig)
380	{	482	{
		483	int old_errno = errno;
381	gotsig = 1;	484	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
383	}	487	}
384	}	488	}
385		489
386	static void	490	static void
387	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	492	{
389	struct ev_signal *w;	493	struct ev_watcher_list *w;
390	int signum;	494	int signum;
391		495
392	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	497	gotsig = 0;
394		498
…		…
396	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
397	{	501	{
398	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
399		503
400	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
401	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
402	}	506	}
403	}	507	}
404		508
405	static void	509	static void
406	siginit (void)	510	siginit (EV_P)
407	{	511	{
		512	#ifndef WIN32
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410		515
411	/* rather than sort out wether we really need nb, set it */	516	/* rather than sort out wether we really need nb, set it */
412	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		519	#endif
414		520
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	524	}
418		525
419	/*****************************************************************************/	526	/*****************************************************************************/
420		527
421	static struct ev_idle **idles;	528	#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		529
432	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
433	static struct ev_signal childev;	531	static struct ev_signal childev;
434		532
435	#ifndef WCONTINUED	533	#ifndef WCONTINUED
436	# define WCONTINUED 0	534	# define WCONTINUED 0
437	#endif	535	#endif
438		536
439	static void	537	static void
440	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	539	{
442	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	{
443	int pid, status;	555	int pid, status;
444		556
445	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
447	if (w->pid == pid || !w->pid)	559	/* make sure we are called again until all childs have been reaped */
448	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	561
450	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, pid, pid, status);
451	}	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		564	}
452	}	565	}
		566
		567	#endif
453		568
454	/*****************************************************************************/	569	/*****************************************************************************/
455		570
		571	#if EV_USE_KQUEUE
		572	# include "ev_kqueue.c"
		573	#endif
456	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	575	# include "ev_epoll.c"
458	#endif	576	#endif
		577	#if EV_USE_POLL
		578	# include "ev_poll.c"
		579	#endif
459	#if EV_USE_SELECT	580	#if EV_USE_SELECT
460	# include "ev_select.c"	581	# include "ev_select.c"
461	#endif	582	#endif
462		583
463	int	584	int
…		…
470	ev_version_minor (void)	591	ev_version_minor (void)
471	{	592	{
472	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
473	}	594	}
474		595
475	int ev_init (int flags)	596	/* return true if we are running with elevated privileges and should ignore env variables */
		597	static int
		598	enable_secure (void)
476	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
		603	return getuid () != geteuid ()
		604	|| getgid () != getegid ();
		605	#endif
		606	}
		607
		608	int
		609	ev_method (EV_P)
		610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
477	if (!ev_method)	617	if (!method)
478	{	618	{
479	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
480	{	620	{
481	struct timespec ts;	621	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	623	have_monotonic = 1;
484	}	624	}
485	#endif	625	#endif
486		626
487	ev_now = ev_time ();	627	rt_now = ev_time ();
488	now = get_clock ();	628	mn_now = get_clock ();
489	now_floor = now;	629	now_floor = mn_now;
490	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
491		631
492	if (pipe (sigpipe))	632	if (methods == EVMETHOD_AUTO)
493	return 0;	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
494		634	methods = atoi (getenv ("LIBEV_METHODS"));
		635	else
495	ev_method = EVMETHOD_NONE;	636	methods = EVMETHOD_ANY;
		637
		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
496	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		647	#endif
		648	#if EV_USE_POLL
		649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
498	#endif	650	#endif
499	#if EV_USE_SELECT	651	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
501	#endif	653	#endif
		654	}
		655	}
502		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
503	if (ev_method)	759	if (ev_method (EV_A))
504	{	760	{
505	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
506	siginit ();	763	siginit (EV_A);
507		764
		765	#ifndef WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
509	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
510	}	771	}
		772	else
		773	default_loop = 0;
511	}	774	}
512		775
513	return ev_method;	776	return default_loop;
514	}	777	}
515		778
516	/*****************************************************************************/
517
518	void	779	void
519	ev_fork_prepare (void)	780	ev_default_destroy (void)
520	{	781	{
521	/* nop */	782	#if EV_MULTIPLICITY
522	}	783	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	784	#endif
537		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
538	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);
539	close (sigpipe [0]);	808	close (sigpipe [0]);
540	close (sigpipe [1]);	809	close (sigpipe [1]);
541	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
542	siginit ();	813	siginit (EV_A);
543	}	814	}
544		815
545	/*****************************************************************************/	816	/*****************************************************************************/
546		817
547	static void	818	static void
548	call_pending (void)	819	call_pending (EV_P)
549	{	820	{
		821	int pri;
		822
		823	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	824	while (pendingcnt [pri])
551	{	825	{
552	ANPENDING *p = pendings + --pendingcnt;	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		827
554	if (p->w)	828	if (p->w)
555	{	829	{
556	p->w->pending = 0;	830	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
558	}	832	}
559	}	833	}
560	}	834	}
561		835
562	static void	836	static void
563	timers_reify (void)	837	timers_reify (EV_P)
564	{	838	{
565	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
566	{	840	{
567	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)));
568		844
569	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
570	if (w->repeat)	846	if (w->repeat)
571	{	847	{
572	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.));
573	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
574	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
575	}	851	}
576	else	852	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		854
579	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
580	}	856	}
581	}	857	}
582		858
583	static void	859	static void
584	periodics_reify (void)	860	periodics_reify (EV_P)
585	{	861	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
587	{	863	{
588	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)));
589		867
590	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
591	if (w->interval)	869	if (w->interval)
592	{	870	{
593	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;
594	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));
595	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
596	}	874	}
597	else	875	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		877
600	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
601	}	879	}
602	}	880	}
603		881
604	static void	882	static void
605	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
606	{	884	{
607	int i;	885	int i;
608		886
609	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
611	{	889	{
612	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
613		891
614	if (w->interval)	892	if (w->interval)
615	{	893	{
616	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;
617		895
618	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
619	{	897	{
620	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
621	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
622		900
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}	902	}
625	}	903	}
626	}	904	}
627	}	905	}
628		906
629	static int	907	inline int
630	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
631	{	909	{
632	now = get_clock ();	910	mn_now = get_clock ();
633		911
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	913	{
636	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
637	return 0;	915	return 0;
638	}	916	}
639	else	917	else
640	{	918	{
641	now_floor = now;	919	now_floor = mn_now;
642	ev_now = ev_time ();	920	rt_now = ev_time ();
643	return 1;	921	return 1;
644	}	922	}
645	}	923	}
646		924
647	static void	925	static void
648	time_update (void)	926	time_update (EV_P)
649	{	927	{
650	int i;	928	int i;
651		929
652	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
654	{	932	{
655	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
656	{	934	{
657	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
658		936
659	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 */
660	{	938	{
661	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
662		940
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	942	return; /* all is well */
665		943
666	ev_now = ev_time ();	944	rt_now = ev_time ();
667	now = get_clock ();	945	mn_now = get_clock ();
668	now_floor = now;	946	now_floor = mn_now;
669	}	947	}
670		948
671	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
672	/* 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) */
673	}	952	}
674	}	953	}
675	else	954	else
676	#endif	955	#endif
677	{	956	{
678	ev_now = ev_time ();	957	rt_now = ev_time ();
679		958
680	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))
681	{	960	{
682	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
683		962
684	/* 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 */
685	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
687	}	966	}
688		967
689	now = ev_now;	968	mn_now = rt_now;
690	}	969	}
691	}	970	}
692		971
693	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
694		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
695	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
696	{	988	{
697	double block;	989	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
699		991
700	do	992	do
701	{	993	{
702	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
704	{	996	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	998	call_pending (EV_A);
707	}	999	}
708		1000
709	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
710	fd_reify ();	1002	fd_reify (EV_A);
711		1003
712	/* calculate blocking time */	1004	/* calculate blocking time */
713		1005
714	/* 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
715	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
718	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
719	else	1011	else
720	#endif	1012	#endif
721	{	1013	{
722	ev_now = ev_time ();	1014	rt_now = ev_time ();
723	now = ev_now;	1015	mn_now = rt_now;
724	}	1016	}
725		1017
726	if (flags & EVLOOP_NONBLOCK || idlecnt)	1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
727	block = 0.;	1019	block = 0.;
728	else	1020	else
729	{	1021	{
730	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
731		1023
732	if (timercnt)	1024	if (timercnt)
733	{	1025	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
735	if (block > to) block = to;	1027	if (block > to) block = to;
736	}	1028	}
737		1029
738	if (periodiccnt)	1030	if (periodiccnt)
739	{	1031	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
741	if (block > to) block = to;	1033	if (block > to) block = to;
742	}	1034	}
743		1035
744	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
745	}	1037	}
746		1038
747	method_poll (block);	1039	method_poll (EV_A_ block);
748		1040
749	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
750	time_update ();	1042	time_update (EV_A);
751		1043
752	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
754	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
755		1047
756	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	1049	if (!pendingcnt)
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		1051
760	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
761	if (checkcnt)	1053	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		1055
764	call_pending ();	1056	call_pending (EV_A);
765	}	1057	}
766	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
767		1059
768	if (ev_loop_done != 2)	1060	if (loop_done != 2)
769	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
770	}	1068	}
771		1069
772	/*****************************************************************************/	1070	/*****************************************************************************/
773		1071
774	static void	1072	inline void
775	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
776	{	1074	{
777	elem->next = *head;	1075	elem->next = *head;
778	*head = elem;	1076	*head = elem;
779	}	1077	}
780		1078
781	static void	1079	inline void
782	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
783	{	1081	{
784	while (*head)	1082	while (*head)
785	{	1083	{
786	if (*head == elem)	1084	if (*head == elem)
…		…
791		1089
792	head = &(*head)->next;	1090	head = &(*head)->next;
793	}	1091	}
794	}	1092	}
795		1093
796	static void	1094	inline void
797	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
798	{	1096	{
799	if (w->pending)	1097	if (w->pending)
800	{	1098	{
801	pendings [w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1100	w->pending = 0;
803	}	1101	}
804	}	1102	}
805		1103
806	static void	1104	inline void
807	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
808	{	1106	{
		1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1109
809	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
810	}	1112	}
811		1113
812	static void	1114	inline void
813	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
814	{	1116	{
		1117	ev_unref (EV_A);
815	w->active = 0;	1118	w->active = 0;
816	}	1119	}
817		1120
818	/*****************************************************************************/	1121	/*****************************************************************************/
819		1122
820	void	1123	void
821	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
822	{	1125	{
823	int fd = w->fd;	1126	int fd = w->fd;
824		1127
825	if (ev_is_active (w))	1128	if (ev_is_active (w))
826	return;	1129	return;
827		1130
828	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
829		1132
830	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1136
834	fd_change (fd);	1137	fd_change (EV_A_ fd);
835	}	1138	}
836		1139
837	void	1140	void
838	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1142	{
840	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
842	return;	1145	return;
843		1146
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
846		1149
847	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
848	}	1151	}
849		1152
850	void	1153	void
851	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1155	{
853	if (ev_is_active (w))	1156	if (ev_is_active (w))
854	return;	1157	return;
855		1158
856	w->at += now;	1159	((WT)w)->at += mn_now;
857		1160
858	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.));
859		1162
860	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
862	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
864	}
865		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
866	void	1171	void
867	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1173	{
869	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
871	return;	1176	return;
872		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
873	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
874	{	1181	{
875	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
876	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
877	}	1184	}
878		1185
879	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
880		1187
881	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
882	}	1189	}
883		1190
884	void	1191	void
885	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1193	{
887	if (ev_is_active (w))	1194	if (ev_is_active (w))
888	{	1195	{
889	if (w->repeat)	1196	if (w->repeat)
890	{	1197	{
891	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
893	}	1200	}
894	else	1201	else
895	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
896	}	1203	}
897	else if (w->repeat)	1204	else if (w->repeat)
898	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
899	}	1206	}
900		1207
901	void	1208	void
902	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1210	{
904	if (ev_is_active (w))	1211	if (ev_is_active (w))
905	return;	1212	return;
906		1213
907	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.));
908		1215
909	/* 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 */
910	if (w->interval)	1217	if (w->interval)
911	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;
912		1219
913	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
915	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
917	}
918		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
919	void	1228	void
920	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1230	{
922	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
924	return;	1233	return;
925		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
926	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
927	{	1238	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
930	}	1241	}
931		1242
932	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
933	}	1244	}
934		1245
935	void	1246	void
936	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1248	{
938	if (ev_is_active (w))	1249	if (ev_is_active (w))
939	return;	1250	return;
940		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
941	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));
942		1326
943	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1330
947	if (!w->next)	1331	if (!((WL)w)->next)
948	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
949	struct sigaction sa;	1336	struct sigaction sa;
950	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
954	}	1342	}
955	}	1343	}
956		1344
957	void	1345	void
958	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1347	{
960	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
962	return;	1350	return;
963		1351
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
966		1354
967	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
969	}	1357	}
970		1358
971	void	1359	void
972	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
973	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
974	if (ev_is_active (w))	1365	if (ev_is_active (w))
975	return;	1366	return;
976		1367
977	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
978	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
979	idles [idlecnt - 1] = w;
980	}	1370	}
981		1371
982	void	1372	void
983	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1374	{
985	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1376	if (ev_is_active (w))
987	return;	1377	return;
988		1378
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);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1056	}	1381	}
1057		1382
1058	/*****************************************************************************/	1383	/*****************************************************************************/
1059		1384
1060	struct ev_once	1385	struct ev_once
…		…
1064	void (*cb)(int revents, void *arg);	1389	void (*cb)(int revents, void *arg);
1065	void *arg;	1390	void *arg;
1066	};	1391	};
1067		1392
1068	static void	1393	static void
1069	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1395	{
1071	void (*cb)(int revents, void *arg) = once->cb;	1396	void (*cb)(int revents, void *arg) = once->cb;
1072	void *arg = once->arg;	1397	void *arg = once->arg;
1073		1398
1074	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1401	free (once);
1077		1402
1078	cb (revents, arg);	1403	cb (revents, arg);
1079	}	1404	}
1080		1405
1081	static void	1406	static void
1082	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1408	{
1084	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);
1085	}	1410	}
1086		1411
1087	static void	1412	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1414	{
1090	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);
1091	}	1416	}
1092		1417
1093	void	1418	void
1094	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)
1095	{	1420	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1097		1422
1098	if (!once)	1423	if (!once)
1099	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1104		1429
1105	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1431	if (fd >= 0)
1107	{	1432	{
1108	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1110	}	1435	}
1111		1436
1112	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1438	if (timeout >= 0.)
1114	{	1439	{
1115	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1117	}	1442	}
1118	}	1443	}
1119	}	1444	}
1120		1445
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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