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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 1.69 by root, Tue Nov 6 00:10:04 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	static void (*syserr_cb)(void);
		159
		160	void ev_set_syserr_cb (void (*cb)(void))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (void)
		167	{
		168	if (syserr_cb)
		169	syserr_cb ();
		170	else
		171	{
		172	perror ("libev");
		173	abort ();
		174	}
		175	}
		176
		177	static void *(*alloc)(void *ptr, long size);
		178
		179	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		180	{
		181	alloc = cb;
		182	}
		183
		184	static void *
		185	ev_realloc (void *ptr, long size)
		186	{
		187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		188
		189	if (!ptr && size)
		190	{
		191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		192	abort ();
		193	}
		194
		195	return ptr;
		196	}
		197
		198	#define ev_malloc(size) ev_realloc (0, (size))
		199	#define ev_free(ptr) ev_realloc ((ptr), 0)
		200
		201	/*****************************************************************************/
		202
		203	typedef struct
		204	{
		205	WL head;
		206	unsigned char events;
		207	unsigned char reify;
		208	} ANFD;
		209
		210	typedef struct
		211	{
		212	W w;
		213	int events;
		214	} ANPENDING;
		215
		216	#if EV_MULTIPLICITY
		217
		218	struct ev_loop
		219	{
		220	# define VAR(name,decl) decl;
		221	# include "ev_vars.h"
		222	};
		223	# undef VAR
		224	# include "ev_wrap.h"
		225
		226	#else
		227
		228	# define VAR(name,decl) static decl;
		229	# include "ev_vars.h"
		230	# undef VAR
		231
		232	#endif
		233
		234	/*****************************************************************************/
		235
		236	inline ev_tstamp
118	ev_time (void)	237	ev_time (void)
119	{	238	{
120	#if EV_USE_REALTIME	239	#if EV_USE_REALTIME
121	struct timespec ts;	240	struct timespec ts;
122	clock_gettime (CLOCK_REALTIME, &ts);	241	clock_gettime (CLOCK_REALTIME, &ts);
…		…
126	gettimeofday (&tv, 0);	245	gettimeofday (&tv, 0);
127	return tv.tv_sec + tv.tv_usec * 1e-6;	246	return tv.tv_sec + tv.tv_usec * 1e-6;
128	#endif	247	#endif
129	}	248	}
130		249
131	static ev_tstamp	250	inline ev_tstamp
132	get_clock (void)	251	get_clock (void)
133	{	252	{
134	#if EV_USE_MONOTONIC	253	#if EV_USE_MONOTONIC
135	if (expect_true (have_monotonic))	254	if (expect_true (have_monotonic))
136	{	255	{
…		…
141	#endif	260	#endif
142		261
143	return ev_time ();	262	return ev_time ();
144	}	263	}
145		264
		265	ev_tstamp
		266	ev_now (EV_P)
		267	{
		268	return rt_now;
		269	}
		270
146	#define array_roundsize(base,n) ((n) | 4 & ~3)	271	#define array_roundsize(base,n) ((n) | 4 & ~3)
147		272
148	#define array_needsize(base,cur,cnt,init) \	273	#define array_needsize(base,cur,cnt,init) \
149	if (expect_false ((cnt) > cur)) \	274	if (expect_false ((cnt) > cur)) \
150	{ \	275	{ \
151	int newcnt = cur; \	276	int newcnt = cur; \
152	do \	277	do \
153	{ \	278	{ \
154	newcnt = array_roundsize (base, newcnt << 1); \	279	newcnt = array_roundsize (base, newcnt << 1); \
155	} \	280	} \
156	while ((cnt) > newcnt); \	281	while ((cnt) > newcnt); \
157	\	282	\
158	base = realloc (base, sizeof (*base) * (newcnt)); \	283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
159	init (base + cur, newcnt - cur); \	284	init (base + cur, newcnt - cur); \
160	cur = newcnt; \	285	cur = newcnt; \
161	}	286	}
		287
		288	#define array_slim(stem) \
		289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		290	{ \
		291	stem ## max = array_roundsize (stem ## cnt >> 1); \
		292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		294	}
		295
		296	#define array_free(stem, idx) \
		297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
162		298
163	/*****************************************************************************/	299	/*****************************************************************************/
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		300
175	static void	301	static void
176	anfds_init (ANFD *base, int count)	302	anfds_init (ANFD *base, int count)
177	{	303	{
178	while (count--)	304	while (count--)
…		…
183		309
184	++base;	310	++base;
185	}	311	}
186	}	312	}
187		313
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	314	static void
198	event (W w, int events)	315	event (EV_P_ W w, int events)
199	{	316	{
200	if (w->pending)	317	if (w->pending)
201	{	318	{
202	pendings [w->pending - 1].events |= events;	319	pendings [ABSPRI (w)][w->pending - 1].events |= events;
203	return;	320	return;
204	}	321	}
205		322
206	w->pending = ++pendingcnt;	323	w->pending = ++pendingcnt [ABSPRI (w)];
207	array_needsize (pendings, pendingmax, pendingcnt, );	324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
208	pendings [pendingcnt - 1].w = w;	325	pendings [ABSPRI (w)][w->pending - 1].w = w;
209	pendings [pendingcnt - 1].events = events;	326	pendings [ABSPRI (w)][w->pending - 1].events = events;
210	}	327	}
211		328
212	static void	329	static void
213	queue_events (W *events, int eventcnt, int type)	330	queue_events (EV_P_ W *events, int eventcnt, int type)
214	{	331	{
215	int i;	332	int i;
216		333
217	for (i = 0; i < eventcnt; ++i)	334	for (i = 0; i < eventcnt; ++i)
218	event (events [i], type);	335	event (EV_A_ events [i], type);
219	}	336	}
220		337
221	static void	338	static void
222	fd_event (int fd, int events)	339	fd_event (EV_P_ int fd, int events)
223	{	340	{
224	ANFD *anfd = anfds + fd;	341	ANFD *anfd = anfds + fd;
225	struct ev_io *w;	342	struct ev_io *w;
226		343
227	for (w = anfd->head; w; w = w->next)	344	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
228	{	345	{
229	int ev = w->events & events;	346	int ev = w->events & events;
230		347
231	if (ev)	348	if (ev)
232	event ((W)w, ev);	349	event (EV_A_ (W)w, ev);
233	}	350	}
234	}	351	}
235		352
236	/*****************************************************************************/	353	/*****************************************************************************/
237		354
238	static int *fdchanges;
239	static int fdchangemax, fdchangecnt;
240
241	static void	355	static void
242	fd_reify (void)	356	fd_reify (EV_P)
243	{	357	{
244	int i;	358	int i;
245		359
246	for (i = 0; i < fdchangecnt; ++i)	360	for (i = 0; i < fdchangecnt; ++i)
247	{	361	{
…		…
249	ANFD *anfd = anfds + fd;	363	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	364	struct ev_io *w;
251		365
252	int events = 0;	366	int events = 0;
253		367
254	for (w = anfd->head; w; w = w->next)	368	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
255	events |= w->events;	369	events |= w->events;
256		370
257	anfd->reify = 0;	371	anfd->reify = 0;
258		372
259	if (anfd->events != events)
260	{
261	method_modify (fd, anfd->events, events);	373	method_modify (EV_A_ fd, anfd->events, events);
262	anfd->events = events;	374	anfd->events = events;
263	}
264	}	375	}
265		376
266	fdchangecnt = 0;	377	fdchangecnt = 0;
267	}	378	}
268		379
269	static void	380	static void
270	fd_change (int fd)	381	fd_change (EV_P_ int fd)
271	{	382	{
272	if (anfds [fd].reify || fdchangecnt < 0)	383	if (anfds [fd].reify || fdchangecnt < 0)
273	return;	384	return;
274		385
275	anfds [fd].reify = 1;	386	anfds [fd].reify = 1;
…		…
277	++fdchangecnt;	388	++fdchangecnt;
278	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
279	fdchanges [fdchangecnt - 1] = fd;	390	fdchanges [fdchangecnt - 1] = fd;
280	}	391	}
281		392
		393	static void
		394	fd_kill (EV_P_ int fd)
		395	{
		396	struct ev_io *w;
		397
		398	while ((w = (struct ev_io *)anfds [fd].head))
		399	{
		400	ev_io_stop (EV_A_ w);
		401	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		402	}
		403	}
		404
282	/* called on EBADF to verify fds */	405	/* called on EBADF to verify fds */
283	static void	406	static void
284	fd_recheck (void)	407	fd_ebadf (EV_P)
285	{	408	{
286	int fd;	409	int fd;
287		410
288	for (fd = 0; fd < anfdmax; ++fd)	411	for (fd = 0; fd < anfdmax; ++fd)
289	if (anfds [fd].events)	412	if (anfds [fd].events)
290	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
291	while (anfds [fd].head)	414	fd_kill (EV_A_ fd);
		415	}
		416
		417	/* called on ENOMEM in select/poll to kill some fds and retry */
		418	static void
		419	fd_enomem (EV_P)
		420	{
		421	int fd;
		422
		423	for (fd = anfdmax; fd--; )
		424	if (anfds [fd].events)
292	{	425	{
293	ev_io_stop (anfds [fd].head);	426	fd_kill (EV_A_ fd);
294	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	427	return;
295	}	428	}
		429	}
		430
		431	/* susually called after fork if method needs to re-arm all fds from scratch */
		432	static void
		433	fd_rearm_all (EV_P)
		434	{
		435	int fd;
		436
		437	/* this should be highly optimised to not do anything but set a flag */
		438	for (fd = 0; fd < anfdmax; ++fd)
		439	if (anfds [fd].events)
		440	{
		441	anfds [fd].events = 0;
		442	fd_change (EV_A_ fd);
		443	}
296	}	444	}
297		445
298	/*****************************************************************************/	446	/*****************************************************************************/
299		447
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	448	static void
307	upheap (WT *timers, int k)	449	upheap (WT *heap, int k)
308	{	450	{
309	WT w = timers [k];	451	WT w = heap [k];
310		452
311	while (k && timers [k >> 1]->at > w->at)	453	while (k && heap [k >> 1]->at > w->at)
312	{	454	{
313	timers [k] = timers [k >> 1];	455	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	456	((W)heap [k])->active = k + 1;
315	k >>= 1;	457	k >>= 1;
316	}	458	}
317		459
318	timers [k] = w;	460	heap [k] = w;
319	timers [k]->active = k + 1;	461	((W)heap [k])->active = k + 1;
320		462
321	}	463	}
322		464
323	static void	465	static void
324	downheap (WT *timers, int N, int k)	466	downheap (WT *heap, int N, int k)
325	{	467	{
326	WT w = timers [k];	468	WT w = heap [k];
327		469
328	while (k < (N >> 1))	470	while (k < (N >> 1))
329	{	471	{
330	int j = k << 1;	472	int j = k << 1;
331		473
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	474	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	475	++j;
334		476
335	if (w->at <= timers [j]->at)	477	if (w->at <= heap [j]->at)
336	break;	478	break;
337		479
338	timers [k] = timers [j];	480	heap [k] = heap [j];
339	timers [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
340	k = j;	482	k = j;
341	}	483	}
342		484
343	timers [k] = w;	485	heap [k] = w;
344	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
345	}	487	}
346		488
347	/*****************************************************************************/	489	/*****************************************************************************/
348		490
349	typedef struct	491	typedef struct
350	{	492	{
351	struct ev_signal *head;	493	WL head;
352	sig_atomic_t volatile gotsig;	494	sig_atomic_t volatile gotsig;
353	} ANSIG;	495	} ANSIG;
354		496
355	static ANSIG *signals;	497	static ANSIG *signals;
356	static int signalmax;	498	static int signalmax;
…		…
372	}	514	}
373		515
374	static void	516	static void
375	sighandler (int signum)	517	sighandler (int signum)
376	{	518	{
		519	#if WIN32
		520	signal (signum, sighandler);
		521	#endif
		522
377	signals [signum - 1].gotsig = 1;	523	signals [signum - 1].gotsig = 1;
378		524
379	if (!gotsig)	525	if (!gotsig)
380	{	526	{
		527	int old_errno = errno;
381	gotsig = 1;	528	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	529	write (sigpipe [1], &signum, 1);
		530	errno = old_errno;
383	}	531	}
384	}	532	}
385		533
386	static void	534	static void
387	sigcb (struct ev_io *iow, int revents)	535	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	536	{
389	struct ev_signal *w;	537	WL w;
390	int signum;	538	int signum;
391		539
392	read (sigpipe [0], &revents, 1);	540	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	541	gotsig = 0;
394		542
…		…
396	if (signals [signum].gotsig)	544	if (signals [signum].gotsig)
397	{	545	{
398	signals [signum].gotsig = 0;	546	signals [signum].gotsig = 0;
399		547
400	for (w = signals [signum].head; w; w = w->next)	548	for (w = signals [signum].head; w; w = w->next)
401	event ((W)w, EV_SIGNAL);	549	event (EV_A_ (W)w, EV_SIGNAL);
402	}	550	}
403	}	551	}
404		552
405	static void	553	static void
406	siginit (void)	554	siginit (EV_P)
407	{	555	{
		556	#ifndef WIN32
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410		559
411	/* rather than sort out wether we really need nb, set it */	560	/* rather than sort out wether we really need nb, set it */
412	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		563	#endif
414		564
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	565	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	566	ev_io_start (EV_A_ &sigev);
		567	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	568	}
418		569
419	/*****************************************************************************/	570	/*****************************************************************************/
420		571
421	static struct ev_idle **idles;	572	#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		573
432	static struct ev_child *childs [PID_HASHSIZE];	574	static struct ev_child *childs [PID_HASHSIZE];
433	static struct ev_signal childev;	575	static struct ev_signal childev;
434		576
435	#ifndef WCONTINUED	577	#ifndef WCONTINUED
436	# define WCONTINUED 0	578	# define WCONTINUED 0
437	#endif	579	#endif
438		580
439	static void	581	static void
440	childcb (struct ev_signal *sw, int revents)	582	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	583	{
442	struct ev_child *w;	584	struct ev_child *w;
		585
		586	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		587	if (w->pid == pid || !w->pid)
		588	{
		589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		590	w->rpid = pid;
		591	w->rstatus = status;
		592	event (EV_A_ (W)w, EV_CHILD);
		593	}
		594	}
		595
		596	static void
		597	childcb (EV_P_ struct ev_signal *sw, int revents)
		598	{
443	int pid, status;	599	int pid, status;
444		600
445	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	602	{
447	if (w->pid == pid || !w->pid)	603	/* make sure we are called again until all childs have been reaped */
448	{	604	event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	605
450	event ((W)w, EV_CHILD);	606	child_reap (EV_A_ sw, pid, pid, status);
451	}	607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		608	}
452	}	609	}
		610
		611	#endif
453		612
454	/*****************************************************************************/	613	/*****************************************************************************/
455		614
		615	#if EV_USE_KQUEUE
		616	# include "ev_kqueue.c"
		617	#endif
456	#if EV_USE_EPOLL	618	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	619	# include "ev_epoll.c"
458	#endif	620	#endif
		621	#if EV_USE_POLL
		622	# include "ev_poll.c"
		623	#endif
459	#if EV_USE_SELECT	624	#if EV_USE_SELECT
460	# include "ev_select.c"	625	# include "ev_select.c"
461	#endif	626	#endif
462		627
463	int	628	int
…		…
470	ev_version_minor (void)	635	ev_version_minor (void)
471	{	636	{
472	return EV_VERSION_MINOR;	637	return EV_VERSION_MINOR;
473	}	638	}
474		639
475	int ev_init (int flags)	640	/* return true if we are running with elevated privileges and should ignore env variables */
		641	static int
		642	enable_secure (void)
476	{	643	{
		644	#ifdef WIN32
		645	return 0;
		646	#else
		647	return getuid () != geteuid ()
		648	|| getgid () != getegid ();
		649	#endif
		650	}
		651
		652	int
		653	ev_method (EV_P)
		654	{
		655	return method;
		656	}
		657
		658	static void
		659	loop_init (EV_P_ int methods)
		660	{
477	if (!ev_method)	661	if (!method)
478	{	662	{
479	#if EV_USE_MONOTONIC	663	#if EV_USE_MONOTONIC
480	{	664	{
481	struct timespec ts;	665	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	667	have_monotonic = 1;
484	}	668	}
485	#endif	669	#endif
486		670
487	ev_now = ev_time ();	671	rt_now = ev_time ();
488	now = get_clock ();	672	mn_now = get_clock ();
489	now_floor = now;	673	now_floor = mn_now;
490	diff = ev_now - now;	674	rtmn_diff = rt_now - mn_now;
491		675
492	if (pipe (sigpipe))	676	if (methods == EVMETHOD_AUTO)
493	return 0;	677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
494		678	methods = atoi (getenv ("LIBEV_METHODS"));
		679	else
495	ev_method = EVMETHOD_NONE;	680	methods = EVMETHOD_ANY;
		681
		682	method = 0;
		683	#if EV_USE_WIN32
		684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		685	#endif
		686	#if EV_USE_KQUEUE
		687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		688	#endif
496	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		691	#endif
		692	#if EV_USE_POLL
		693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
498	#endif	694	#endif
499	#if EV_USE_SELECT	695	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
501	#endif	697	#endif
		698	}
		699	}
502		700
		701	void
		702	loop_destroy (EV_P)
		703	{
		704	int i;
		705
		706	#if EV_USE_WIN32
		707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		708	#endif
		709	#if EV_USE_KQUEUE
		710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		711	#endif
		712	#if EV_USE_EPOLL
		713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		714	#endif
		715	#if EV_USE_POLL
		716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		717	#endif
		718	#if EV_USE_SELECT
		719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		720	#endif
		721
		722	for (i = NUMPRI; i--; )
		723	array_free (pending, [i]);
		724
		725	array_free (fdchange, );
		726	array_free (timer, );
		727	array_free (periodic, );
		728	array_free (idle, );
		729	array_free (prepare, );
		730	array_free (check, );
		731
		732	method = 0;
		733	/*TODO*/
		734	}
		735
		736	void
		737	loop_fork (EV_P)
		738	{
		739	/*TODO*/
		740	#if EV_USE_EPOLL
		741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		742	#endif
		743	#if EV_USE_KQUEUE
		744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		745	#endif
		746	}
		747
		748	#if EV_MULTIPLICITY
		749	struct ev_loop *
		750	ev_loop_new (int methods)
		751	{
		752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		753
		754	memset (loop, 0, sizeof (struct ev_loop));
		755
		756	loop_init (EV_A_ methods);
		757
		758	if (ev_method (EV_A))
		759	return loop;
		760
		761	return 0;
		762	}
		763
		764	void
		765	ev_loop_destroy (EV_P)
		766	{
		767	loop_destroy (EV_A);
		768	ev_free (loop);
		769	}
		770
		771	void
		772	ev_loop_fork (EV_P)
		773	{
		774	loop_fork (EV_A);
		775	}
		776
		777	#endif
		778
		779	#if EV_MULTIPLICITY
		780	struct ev_loop default_loop_struct;
		781	static struct ev_loop *default_loop;
		782
		783	struct ev_loop *
		784	#else
		785	static int default_loop;
		786
		787	int
		788	#endif
		789	ev_default_loop (int methods)
		790	{
		791	if (sigpipe [0] == sigpipe [1])
		792	if (pipe (sigpipe))
		793	return 0;
		794
		795	if (!default_loop)
		796	{
		797	#if EV_MULTIPLICITY
		798	struct ev_loop *loop = default_loop = &default_loop_struct;
		799	#else
		800	default_loop = 1;
		801	#endif
		802
		803	loop_init (EV_A_ methods);
		804
503	if (ev_method)	805	if (ev_method (EV_A))
504	{	806	{
505	ev_watcher_init (&sigev, sigcb);	807	ev_watcher_init (&sigev, sigcb);
		808	ev_set_priority (&sigev, EV_MAXPRI);
506	siginit ();	809	siginit (EV_A);
507		810
		811	#ifndef WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	812	ev_signal_init (&childev, childcb, SIGCHLD);
		813	ev_set_priority (&childev, EV_MAXPRI);
509	ev_signal_start (&childev);	814	ev_signal_start (EV_A_ &childev);
		815	ev_unref (EV_A); /* child watcher should not keep loop alive */
		816	#endif
510	}	817	}
		818	else
		819	default_loop = 0;
511	}	820	}
512		821
513	return ev_method;	822	return default_loop;
514	}	823	}
515		824
516	/*****************************************************************************/
517
518	void	825	void
519	ev_fork_prepare (void)	826	ev_default_destroy (void)
520	{	827	{
521	/* nop */	828	#if EV_MULTIPLICITY
522	}	829	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	830	#endif
537		831
		832	ev_ref (EV_A); /* child watcher */
		833	ev_signal_stop (EV_A_ &childev);
		834
		835	ev_ref (EV_A); /* signal watcher */
538	ev_io_stop (&sigev);	836	ev_io_stop (EV_A_ &sigev);
		837
		838	close (sigpipe [0]); sigpipe [0] = 0;
		839	close (sigpipe [1]); sigpipe [1] = 0;
		840
		841	loop_destroy (EV_A);
		842	}
		843
		844	void
		845	ev_default_fork (void)
		846	{
		847	#if EV_MULTIPLICITY
		848	struct ev_loop *loop = default_loop;
		849	#endif
		850
		851	loop_fork (EV_A);
		852
		853	ev_io_stop (EV_A_ &sigev);
539	close (sigpipe [0]);	854	close (sigpipe [0]);
540	close (sigpipe [1]);	855	close (sigpipe [1]);
541	pipe (sigpipe);	856	pipe (sigpipe);
		857
		858	ev_ref (EV_A); /* signal watcher */
542	siginit ();	859	siginit (EV_A);
543	}	860	}
544		861
545	/*****************************************************************************/	862	/*****************************************************************************/
546		863
547	static void	864	static void
548	call_pending (void)	865	call_pending (EV_P)
549	{	866	{
		867	int pri;
		868
		869	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	870	while (pendingcnt [pri])
551	{	871	{
552	ANPENDING *p = pendings + --pendingcnt;	872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		873
554	if (p->w)	874	if (p->w)
555	{	875	{
556	p->w->pending = 0;	876	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	877	p->w->cb (EV_A_ p->w, p->events);
558	}	878	}
559	}	879	}
560	}	880	}
561		881
562	static void	882	static void
563	timers_reify (void)	883	timers_reify (EV_P)
564	{	884	{
565	while (timercnt && timers [0]->at <= now)	885	while (timercnt && ((WT)timers [0])->at <= mn_now)
566	{	886	{
567	struct ev_timer *w = timers [0];	887	struct ev_timer *w = timers [0];
		888
		889	assert (("inactive timer on timer heap detected", ev_is_active (w)));
568		890
569	/* first reschedule or stop timer */	891	/* first reschedule or stop timer */
570	if (w->repeat)	892	if (w->repeat)
571	{	893	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
573	w->at = now + w->repeat;	895	((WT)w)->at = mn_now + w->repeat;
574	downheap ((WT *)timers, timercnt, 0);	896	downheap ((WT *)timers, timercnt, 0);
575	}	897	}
576	else	898	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		900
579	event ((W)w, EV_TIMEOUT);	901	event (EV_A_ (W)w, EV_TIMEOUT);
580	}	902	}
581	}	903	}
582		904
583	static void	905	static void
584	periodics_reify (void)	906	periodics_reify (EV_P)
585	{	907	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
587	{	909	{
588	struct ev_periodic *w = periodics [0];	910	struct ev_periodic *w = periodics [0];
		911
		912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
589		913
590	/* first reschedule or stop timer */	914	/* first reschedule or stop timer */
591	if (w->interval)	915	if (w->interval)
592	{	916	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	917	((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));	918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
595	downheap ((WT *)periodics, periodiccnt, 0);	919	downheap ((WT *)periodics, periodiccnt, 0);
596	}	920	}
597	else	921	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		923
600	event ((W)w, EV_PERIODIC);	924	event (EV_A_ (W)w, EV_PERIODIC);
601	}	925	}
602	}	926	}
603		927
604	static void	928	static void
605	periodics_reschedule (ev_tstamp diff)	929	periodics_reschedule (EV_P)
606	{	930	{
607	int i;	931	int i;
608		932
609	/* adjust periodics after time jump */	933	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	934	for (i = 0; i < periodiccnt; ++i)
611	{	935	{
612	struct ev_periodic *w = periodics [i];	936	struct ev_periodic *w = periodics [i];
613		937
614	if (w->interval)	938	if (w->interval)
615	{	939	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
617		941
618	if (fabs (diff) >= 1e-4)	942	if (fabs (diff) >= 1e-4)
619	{	943	{
620	ev_periodic_stop (w);	944	ev_periodic_stop (EV_A_ w);
621	ev_periodic_start (w);	945	ev_periodic_start (EV_A_ w);
622		946
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */	947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}	948	}
625	}	949	}
626	}	950	}
627	}	951	}
628		952
629	static int	953	inline int
630	time_update_monotonic (void)	954	time_update_monotonic (EV_P)
631	{	955	{
632	now = get_clock ();	956	mn_now = get_clock ();
633		957
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	959	{
636	ev_now = now + diff;	960	rt_now = rtmn_diff + mn_now;
637	return 0;	961	return 0;
638	}	962	}
639	else	963	else
640	{	964	{
641	now_floor = now;	965	now_floor = mn_now;
642	ev_now = ev_time ();	966	rt_now = ev_time ();
643	return 1;	967	return 1;
644	}	968	}
645	}	969	}
646		970
647	static void	971	static void
648	time_update (void)	972	time_update (EV_P)
649	{	973	{
650	int i;	974	int i;
651		975
652	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
654	{	978	{
655	if (time_update_monotonic ())	979	if (time_update_monotonic (EV_A))
656	{	980	{
657	ev_tstamp odiff = diff;	981	ev_tstamp odiff = rtmn_diff;
658		982
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	983	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	984	{
661	diff = ev_now - now;	985	rtmn_diff = rt_now - mn_now;
662		986
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	988	return; /* all is well */
665		989
666	ev_now = ev_time ();	990	rt_now = ev_time ();
667	now = get_clock ();	991	mn_now = get_clock ();
668	now_floor = now;	992	now_floor = mn_now;
669	}	993	}
670		994
671	periodics_reschedule (diff - odiff);	995	periodics_reschedule (EV_A);
672	/* no timer adjustment, as the monotonic clock doesn't jump */	996	/* no timer adjustment, as the monotonic clock doesn't jump */
		997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	998	}
674	}	999	}
675	else	1000	else
676	#endif	1001	#endif
677	{	1002	{
678	ev_now = ev_time ();	1003	rt_now = ev_time ();
679		1004
680	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	1006	{
682	periodics_reschedule (ev_now - now);	1007	periodics_reschedule (EV_A);
683		1008
684	/* adjust timers. this is easy, as the offset is the same for all */	1009	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	1010	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	1011	((WT)timers [i])->at += rt_now - mn_now;
687	}	1012	}
688		1013
689	now = ev_now;	1014	mn_now = rt_now;
690	}	1015	}
691	}	1016	}
692		1017
693	int ev_loop_done;	1018	void
		1019	ev_ref (EV_P)
		1020	{
		1021	++activecnt;
		1022	}
694		1023
		1024	void
		1025	ev_unref (EV_P)
		1026	{
		1027	--activecnt;
		1028	}
		1029
		1030	static int loop_done;
		1031
		1032	void
695	void ev_loop (int flags)	1033	ev_loop (EV_P_ int flags)
696	{	1034	{
697	double block;	1035	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
699		1037
700	do	1038	do
701	{	1039	{
702	/* queue check watchers (and execute them) */	1040	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	1041	if (expect_false (preparecnt))
704	{	1042	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	1044	call_pending (EV_A);
707	}	1045	}
708		1046
709	/* update fd-related kernel structures */	1047	/* update fd-related kernel structures */
710	fd_reify ();	1048	fd_reify (EV_A);
711		1049
712	/* calculate blocking time */	1050	/* calculate blocking time */
713		1051
714	/* we only need this for !monotonic clockor timers, but as we basically	1052	/* we only need this for !monotonic clockor timers, but as we basically
715	always have timers, we just calculate it always */	1053	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	1054	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	1055	if (expect_true (have_monotonic))
718	time_update_monotonic ();	1056	time_update_monotonic (EV_A);
719	else	1057	else
720	#endif	1058	#endif
721	{	1059	{
722	ev_now = ev_time ();	1060	rt_now = ev_time ();
723	now = ev_now;	1061	mn_now = rt_now;
724	}	1062	}
725		1063
726	if (flags & EVLOOP_NONBLOCK || idlecnt)	1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
727	block = 0.;	1065	block = 0.;
728	else	1066	else
729	{	1067	{
730	block = MAX_BLOCKTIME;	1068	block = MAX_BLOCKTIME;
731		1069
732	if (timercnt)	1070	if (timercnt)
733	{	1071	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
735	if (block > to) block = to;	1073	if (block > to) block = to;
736	}	1074	}
737		1075
738	if (periodiccnt)	1076	if (periodiccnt)
739	{	1077	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
741	if (block > to) block = to;	1079	if (block > to) block = to;
742	}	1080	}
743		1081
744	if (block < 0.) block = 0.;	1082	if (block < 0.) block = 0.;
745	}	1083	}
746		1084
747	method_poll (block);	1085	method_poll (EV_A_ block);
748		1086
749	/* update ev_now, do magic */	1087	/* update rt_now, do magic */
750	time_update ();	1088	time_update (EV_A);
751		1089
752	/* queue pending timers and reschedule them */	1090	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	1091	timers_reify (EV_A); /* relative timers called last */
754	periodics_reify (); /* absolute timers called first */	1092	periodics_reify (EV_A); /* absolute timers called first */
755		1093
756	/* queue idle watchers unless io or timers are pending */	1094	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	1095	if (!pendingcnt)
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		1097
760	/* queue check watchers, to be executed first */	1098	/* queue check watchers, to be executed first */
761	if (checkcnt)	1099	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		1101
764	call_pending ();	1102	call_pending (EV_A);
765	}	1103	}
766	while (!ev_loop_done);	1104	while (activecnt && !loop_done);
767		1105
768	if (ev_loop_done != 2)	1106	if (loop_done != 2)
769	ev_loop_done = 0;	1107	loop_done = 0;
		1108	}
		1109
		1110	void
		1111	ev_unloop (EV_P_ int how)
		1112	{
		1113	loop_done = how;
770	}	1114	}
771		1115
772	/*****************************************************************************/	1116	/*****************************************************************************/
773		1117
774	static void	1118	inline void
775	wlist_add (WL *head, WL elem)	1119	wlist_add (WL *head, WL elem)
776	{	1120	{
777	elem->next = *head;	1121	elem->next = *head;
778	*head = elem;	1122	*head = elem;
779	}	1123	}
780		1124
781	static void	1125	inline void
782	wlist_del (WL *head, WL elem)	1126	wlist_del (WL *head, WL elem)
783	{	1127	{
784	while (*head)	1128	while (*head)
785	{	1129	{
786	if (*head == elem)	1130	if (*head == elem)
…		…
791		1135
792	head = &(*head)->next;	1136	head = &(*head)->next;
793	}	1137	}
794	}	1138	}
795		1139
796	static void	1140	inline void
797	ev_clear_pending (W w)	1141	ev_clear_pending (EV_P_ W w)
798	{	1142	{
799	if (w->pending)	1143	if (w->pending)
800	{	1144	{
801	pendings [w->pending - 1].w = 0;	1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1146	w->pending = 0;
803	}	1147	}
804	}	1148	}
805		1149
806	static void	1150	inline void
807	ev_start (W w, int active)	1151	ev_start (EV_P_ W w, int active)
808	{	1152	{
		1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1155
809	w->active = active;	1156	w->active = active;
		1157	ev_ref (EV_A);
810	}	1158	}
811		1159
812	static void	1160	inline void
813	ev_stop (W w)	1161	ev_stop (EV_P_ W w)
814	{	1162	{
		1163	ev_unref (EV_A);
815	w->active = 0;	1164	w->active = 0;
816	}	1165	}
817		1166
818	/*****************************************************************************/	1167	/*****************************************************************************/
819		1168
820	void	1169	void
821	ev_io_start (struct ev_io *w)	1170	ev_io_start (EV_P_ struct ev_io *w)
822	{	1171	{
823	int fd = w->fd;	1172	int fd = w->fd;
824		1173
825	if (ev_is_active (w))	1174	if (ev_is_active (w))
826	return;	1175	return;
827		1176
828	assert (("ev_io_start called with negative fd", fd >= 0));	1177	assert (("ev_io_start called with negative fd", fd >= 0));
829		1178
830	ev_start ((W)w, 1);	1179	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1182
834	fd_change (fd);	1183	fd_change (EV_A_ fd);
835	}	1184	}
836		1185
837	void	1186	void
838	ev_io_stop (struct ev_io *w)	1187	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1188	{
840	ev_clear_pending ((W)w);	1189	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1190	if (!ev_is_active (w))
842	return;	1191	return;
843		1192
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1194	ev_stop (EV_A_ (W)w);
846		1195
847	fd_change (w->fd);	1196	fd_change (EV_A_ w->fd);
848	}	1197	}
849		1198
850	void	1199	void
851	ev_timer_start (struct ev_timer *w)	1200	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1201	{
853	if (ev_is_active (w))	1202	if (ev_is_active (w))
854	return;	1203	return;
855		1204
856	w->at += now;	1205	((WT)w)->at += mn_now;
857		1206
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1208
860	ev_start ((W)w, ++timercnt);	1209	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1210	array_needsize (timers, timermax, timercnt, );
862	timers [timercnt - 1] = w;	1211	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1212	upheap ((WT *)timers, timercnt - 1);
864	}
865		1213
		1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1215	}
		1216
866	void	1217	void
867	ev_timer_stop (struct ev_timer *w)	1218	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1219	{
869	ev_clear_pending ((W)w);	1220	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1221	if (!ev_is_active (w))
871	return;	1222	return;
872		1223
		1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1225
873	if (w->active < timercnt--)	1226	if (((W)w)->active < timercnt--)
874	{	1227	{
875	timers [w->active - 1] = timers [timercnt];	1228	timers [((W)w)->active - 1] = timers [timercnt];
876	downheap ((WT *)timers, timercnt, w->active - 1);	1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
877	}	1230	}
878		1231
879	w->at = w->repeat;	1232	((WT)w)->at = w->repeat;
880		1233
881	ev_stop ((W)w);	1234	ev_stop (EV_A_ (W)w);
882	}	1235	}
883		1236
884	void	1237	void
885	ev_timer_again (struct ev_timer *w)	1238	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1239	{
887	if (ev_is_active (w))	1240	if (ev_is_active (w))
888	{	1241	{
889	if (w->repeat)	1242	if (w->repeat)
890	{	1243	{
891	w->at = now + w->repeat;	1244	((WT)w)->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
893	}	1246	}
894	else	1247	else
895	ev_timer_stop (w);	1248	ev_timer_stop (EV_A_ w);
896	}	1249	}
897	else if (w->repeat)	1250	else if (w->repeat)
898	ev_timer_start (w);	1251	ev_timer_start (EV_A_ w);
899	}	1252	}
900		1253
901	void	1254	void
902	ev_periodic_start (struct ev_periodic *w)	1255	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1256	{
904	if (ev_is_active (w))	1257	if (ev_is_active (w))
905	return;	1258	return;
906		1259
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908		1261
909	/* this formula differs from the one in periodic_reify because we do not always round up */	1262	/* this formula differs from the one in periodic_reify because we do not always round up */
910	if (w->interval)	1263	if (w->interval)
911	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
912		1265
913	ev_start ((W)w, ++periodiccnt);	1266	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1267	array_needsize (periodics, periodicmax, periodiccnt, );
915	periodics [periodiccnt - 1] = w;	1268	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1269	upheap ((WT *)periodics, periodiccnt - 1);
917	}
918		1270
		1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1272	}
		1273
919	void	1274	void
920	ev_periodic_stop (struct ev_periodic *w)	1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1276	{
922	ev_clear_pending ((W)w);	1277	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1278	if (!ev_is_active (w))
924	return;	1279	return;
925		1280
		1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1282
926	if (w->active < periodiccnt--)	1283	if (((W)w)->active < periodiccnt--)
927	{	1284	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
930	}	1287	}
931		1288
932	ev_stop ((W)w);	1289	ev_stop (EV_A_ (W)w);
933	}	1290	}
934		1291
935	void	1292	void
936	ev_signal_start (struct ev_signal *w)	1293	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1294	{
938	if (ev_is_active (w))	1295	if (ev_is_active (w))
939	return;	1296	return;
940		1297
		1298	ev_start (EV_A_ (W)w, ++idlecnt);
		1299	array_needsize (idles, idlemax, idlecnt, );
		1300	idles [idlecnt - 1] = w;
		1301	}
		1302
		1303	void
		1304	ev_idle_stop (EV_P_ struct ev_idle *w)
		1305	{
		1306	ev_clear_pending (EV_A_ (W)w);
		1307	if (ev_is_active (w))
		1308	return;
		1309
		1310	idles [((W)w)->active - 1] = idles [--idlecnt];
		1311	ev_stop (EV_A_ (W)w);
		1312	}
		1313
		1314	void
		1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1316	{
		1317	if (ev_is_active (w))
		1318	return;
		1319
		1320	ev_start (EV_A_ (W)w, ++preparecnt);
		1321	array_needsize (prepares, preparemax, preparecnt, );
		1322	prepares [preparecnt - 1] = w;
		1323	}
		1324
		1325	void
		1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1327	{
		1328	ev_clear_pending (EV_A_ (W)w);
		1329	if (ev_is_active (w))
		1330	return;
		1331
		1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1333	ev_stop (EV_A_ (W)w);
		1334	}
		1335
		1336	void
		1337	ev_check_start (EV_P_ struct ev_check *w)
		1338	{
		1339	if (ev_is_active (w))
		1340	return;
		1341
		1342	ev_start (EV_A_ (W)w, ++checkcnt);
		1343	array_needsize (checks, checkmax, checkcnt, );
		1344	checks [checkcnt - 1] = w;
		1345	}
		1346
		1347	void
		1348	ev_check_stop (EV_P_ struct ev_check *w)
		1349	{
		1350	ev_clear_pending (EV_A_ (W)w);
		1351	if (ev_is_active (w))
		1352	return;
		1353
		1354	checks [((W)w)->active - 1] = checks [--checkcnt];
		1355	ev_stop (EV_A_ (W)w);
		1356	}
		1357
		1358	#ifndef SA_RESTART
		1359	# define SA_RESTART 0
		1360	#endif
		1361
		1362	void
		1363	ev_signal_start (EV_P_ struct ev_signal *w)
		1364	{
		1365	#if EV_MULTIPLICITY
		1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1367	#endif
		1368	if (ev_is_active (w))
		1369	return;
		1370
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1372
943	ev_start ((W)w, 1);	1373	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1374	array_needsize (signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1376
947	if (!w->next)	1377	if (!((WL)w)->next)
948	{	1378	{
		1379	#if WIN32
		1380	signal (w->signum, sighandler);
		1381	#else
949	struct sigaction sa;	1382	struct sigaction sa;
950	sa.sa_handler = sighandler;	1383	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1384	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1385	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1386	sigaction (w->signum, &sa, 0);
		1387	#endif
954	}	1388	}
955	}	1389	}
956		1390
957	void	1391	void
958	ev_signal_stop (struct ev_signal *w)	1392	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1393	{
960	ev_clear_pending ((W)w);	1394	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1395	if (!ev_is_active (w))
962	return;	1396	return;
963		1397
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1399	ev_stop (EV_A_ (W)w);
966		1400
967	if (!signals [w->signum - 1].head)	1401	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1402	signal (w->signum, SIG_DFL);
969	}	1403	}
970		1404
971	void	1405	void
972	ev_idle_start (struct ev_idle *w)	1406	ev_child_start (EV_P_ struct ev_child *w)
973	{	1407	{
		1408	#if EV_MULTIPLICITY
		1409	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1410	#endif
974	if (ev_is_active (w))	1411	if (ev_is_active (w))
975	return;	1412	return;
976		1413
977	ev_start ((W)w, ++idlecnt);	1414	ev_start (EV_A_ (W)w, 1);
978	array_needsize (idles, idlemax, idlecnt, );	1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
979	idles [idlecnt - 1] = w;
980	}	1416	}
981		1417
982	void	1418	void
983	ev_idle_stop (struct ev_idle *w)	1419	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1420	{
985	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1422	if (ev_is_active (w))
987	return;	1423	return;
988		1424
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);	1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1426	ev_stop (EV_A_ (W)w);
1056	}	1427	}
1057		1428
1058	/*****************************************************************************/	1429	/*****************************************************************************/
1059		1430
1060	struct ev_once	1431	struct ev_once
…		…
1064	void (*cb)(int revents, void *arg);	1435	void (*cb)(int revents, void *arg);
1065	void *arg;	1436	void *arg;
1066	};	1437	};
1067		1438
1068	static void	1439	static void
1069	once_cb (struct ev_once *once, int revents)	1440	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1441	{
1071	void (*cb)(int revents, void *arg) = once->cb;	1442	void (*cb)(int revents, void *arg) = once->cb;
1072	void *arg = once->arg;	1443	void *arg = once->arg;
1073		1444
1074	ev_io_stop (&once->io);	1445	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1446	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1447	ev_free (once);
1077		1448
1078	cb (revents, arg);	1449	cb (revents, arg);
1079	}	1450	}
1080		1451
1081	static void	1452	static void
1082	once_cb_io (struct ev_io *w, int revents)	1453	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1454	{
1084	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1455	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085	}	1456	}
1086		1457
1087	static void	1458	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1460	{
1090	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1461	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091	}	1462	}
1092		1463
1093	void	1464	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095	{	1466	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1097		1468
1098	if (!once)	1469	if (!once)
1099	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1100	else	1471	else
1101	{	1472	{
…		…
1104		1475
1105	ev_watcher_init (&once->io, once_cb_io);	1476	ev_watcher_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1477	if (fd >= 0)
1107	{	1478	{
1108	ev_io_set (&once->io, fd, events);	1479	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1480	ev_io_start (EV_A_ &once->io);
1110	}	1481	}
1111		1482
1112	ev_watcher_init (&once->to, once_cb_to);	1483	ev_watcher_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1484	if (timeout >= 0.)
1114	{	1485	{
1115	ev_timer_set (&once->to, timeout, 0.);	1486	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1487	ev_timer_start (EV_A_ &once->to);
1117	}	1488	}
1118	}	1489	}
1119	}	1490	}
1120		1491
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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