[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 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_EMBED
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
51	/**/	53	/**/
52		54
…		…
56		58
57	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
59	#endif	61	#endif
60		62
61	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
67	#endif	73	#endif
68		74
69	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
71	#endif	77	#endif
…		…
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
91		97
		98	#ifndef EV_EMBED
92	#include "ev.h"	99	# include "ev.h"
		100	#endif
93		101
94	#if __GNUC__ >= 3	102	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	103	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	104	# define inline inline
97	#else	105	#else
…		…
100	#endif	108	#endif
101		109
102	#define expect_false(expr) expect ((expr) != 0, 0)	110	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	111	#define expect_true(expr) expect ((expr) != 0, 1)
104		112
		113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		115
105	typedef struct ev_watcher *W;	116	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	117	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	118	typedef struct ev_watcher_time *WT;
108		119
109	static ev_tstamp now_floor, now, diff; /* monotonic clock */	120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
110	ev_tstamp ev_now;
111	int ev_method;
112
113	static int have_monotonic; /* runtime */
114
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
116	static void (*method_modify)(int fd, int oev, int nev);
117	static void (*method_poll)(ev_tstamp timeout);
118		121
119	/*****************************************************************************/	122	/*****************************************************************************/
120		123
121	ev_tstamp	124	typedef struct
		125	{
		126	struct ev_watcher_list *head;
		127	unsigned char events;
		128	unsigned char reify;
		129	} ANFD;
		130
		131	typedef struct
		132	{
		133	W w;
		134	int events;
		135	} ANPENDING;
		136
		137	#if EV_MULTIPLICITY
		138
		139	struct ev_loop
		140	{
		141	# define VAR(name,decl) decl;
		142	# include "ev_vars.h"
		143	};
		144	# undef VAR
		145	# include "ev_wrap.h"
		146
		147	#else
		148
		149	# define VAR(name,decl) static decl;
		150	# include "ev_vars.h"
		151	# undef VAR
		152
		153	#endif
		154
		155	/*****************************************************************************/
		156
		157	inline ev_tstamp
122	ev_time (void)	158	ev_time (void)
123	{	159	{
124	#if EV_USE_REALTIME	160	#if EV_USE_REALTIME
125	struct timespec ts;	161	struct timespec ts;
126	clock_gettime (CLOCK_REALTIME, &ts);	162	clock_gettime (CLOCK_REALTIME, &ts);
…		…
130	gettimeofday (&tv, 0);	166	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	167	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	168	#endif
133	}	169	}
134		170
135	static ev_tstamp	171	inline ev_tstamp
136	get_clock (void)	172	get_clock (void)
137	{	173	{
138	#if EV_USE_MONOTONIC	174	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	175	if (expect_true (have_monotonic))
140	{	176	{
…		…
143	return ts.tv_sec + ts.tv_nsec * 1e-9;	179	return ts.tv_sec + ts.tv_nsec * 1e-9;
144	}	180	}
145	#endif	181	#endif
146		182
147	return ev_time ();	183	return ev_time ();
		184	}
		185
		186	ev_tstamp
		187	ev_now (EV_P)
		188	{
		189	return rt_now;
148	}	190	}
149		191
150	#define array_roundsize(base,n) ((n) \| 4 & ~3)	192	#define array_roundsize(base,n) ((n) \| 4 & ~3)
151		193
152	#define array_needsize(base,cur,cnt,init) \	194	#define array_needsize(base,cur,cnt,init) \
…		…
164	cur = newcnt; \	206	cur = newcnt; \
165	}	207	}
166		208
167	/*****************************************************************************/	209	/*****************************************************************************/
168		210
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178
179	static void	211	static void
180	anfds_init (ANFD *base, int count)	212	anfds_init (ANFD *base, int count)
181	{	213	{
182	while (count--)	214	while (count--)
183	{	215	{
…		…
187		219
188	++base;	220	++base;
189	}	221	}
190	}	222	}
191		223
192	typedef struct
193	{
194	W w;
195	int events;
196	} ANPENDING;
197
198	static ANPENDING *pendings;
199	static int pendingmax, pendingcnt;
200
201	static void	224	static void
202	event (W w, int events)	225	event (EV_P_ W w, int events)
203	{	226	{
204	if (w->pending)	227	if (w->pending)
205	{	228	{
206	pendings [w->pending - 1].events \|= events;	229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
207	return;	230	return;
208	}	231	}
209		232
210	w->pending = ++pendingcnt;	233	w->pending = ++pendingcnt [ABSPRI (w)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
212	pendings [pendingcnt - 1].w = w;	235	pendings [ABSPRI (w)][w->pending - 1].w = w;
213	pendings [pendingcnt - 1].events = events;	236	pendings [ABSPRI (w)][w->pending - 1].events = events;
214	}	237	}
215		238
216	static void	239	static void
217	queue_events (W *events, int eventcnt, int type)	240	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	241	{
219	int i;	242	int i;
220		243
221	for (i = 0; i < eventcnt; ++i)	244	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	245	event (EV_A_ events [i], type);
223	}	246	}
224		247
225	static void	248	static void
226	fd_event (int fd, int events)	249	fd_event (EV_P_ int fd, int events)
227	{	250	{
228	ANFD *anfd = anfds + fd;	251	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	252	struct ev_io *w;
230		253
231	for (w = anfd->head; w; w = w->next)	254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
232	{	255	{
233	int ev = w->events & events;	256	int ev = w->events & events;
234		257
235	if (ev)	258	if (ev)
236	event ((W)w, ev);	259	event (EV_A_ (W)w, ev);
237	}	260	}
238	}	261	}
239		262
240	/*****************************************************************************/	263	/*****************************************************************************/
241		264
242	static int *fdchanges;
243	static int fdchangemax, fdchangecnt;
244
245	static void	265	static void
246	fd_reify (void)	266	fd_reify (EV_P)
247	{	267	{
248	int i;	268	int i;
249		269
250	for (i = 0; i < fdchangecnt; ++i)	270	for (i = 0; i < fdchangecnt; ++i)
251	{	271	{
…		…
253	ANFD *anfd = anfds + fd;	273	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	274	struct ev_io *w;
255		275
256	int events = 0;	276	int events = 0;
257		277
258	for (w = anfd->head; w; w = w->next)	278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
259	events \|= w->events;	279	events \|= w->events;
260		280
261	anfd->reify = 0;	281	anfd->reify = 0;
262		282
263	if (anfd->events != events)	283	if (anfd->events != events)
264	{	284	{
265	method_modify (fd, anfd->events, events);	285	method_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	286	anfd->events = events;
267	}	287	}
268	}	288	}
269		289
270	fdchangecnt = 0;	290	fdchangecnt = 0;
271	}	291	}
272		292
273	static void	293	static void
274	fd_change (int fd)	294	fd_change (EV_P_ int fd)
275	{	295	{
276	if (anfds [fd].reify \|\| fdchangecnt < 0)	296	if (anfds [fd].reify \|\| fdchangecnt < 0)
277	return;	297	return;
278		298
279	anfds [fd].reify = 1;	299	anfds [fd].reify = 1;
…		…
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
283	fdchanges [fdchangecnt - 1] = fd;	303	fdchanges [fdchangecnt - 1] = fd;
284	}	304	}
285		305
286	static void	306	static void
287	fd_kill (int fd)	307	fd_kill (EV_P_ int fd)
288	{	308	{
289	struct ev_io *w;	309	struct ev_io *w;
290		310
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	311	while ((w = (struct ev_io *)anfds [fd].head))
293	{	312	{
294	ev_io_stop (w);	313	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
296	}	315	}
297	}	316	}
298		317
299	/* called on EBADF to verify fds */	318	/* called on EBADF to verify fds */
300	static void	319	static void
301	fd_ebadf (void)	320	fd_ebadf (EV_P)
302	{	321	{
303	int fd;	322	int fd;
304		323
305	for (fd = 0; fd < anfdmax; ++fd)	324	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	325	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
308	fd_kill (fd);	327	fd_kill (EV_A_ fd);
309	}	328	}
310		329
311	/* called on ENOMEM in select/poll to kill some fds and retry */	330	/* called on ENOMEM in select/poll to kill some fds and retry */
312	static void	331	static void
313	fd_enomem (void)	332	fd_enomem (EV_P)
314	{	333	{
315	int fd = anfdmax;	334	int fd = anfdmax;
316		335
317	while (fd--)	336	while (fd--)
318	if (anfds [fd].events)	337	if (anfds [fd].events)
319	{	338	{
320	close (fd);	339	close (fd);
321	fd_kill (fd);	340	fd_kill (EV_A_ fd);
322	return;	341	return;
323	}	342	}
324	}	343	}
325		344
		345	/* susually called after fork if method needs to re-arm all fds from scratch */
		346	static void
		347	fd_rearm_all (EV_P)
		348	{
		349	int fd;
		350
		351	/* this should be highly optimised to not do anything but set a flag */
		352	for (fd = 0; fd < anfdmax; ++fd)
		353	if (anfds [fd].events)
		354	{
		355	anfds [fd].events = 0;
		356	fd_change (fd);
		357	}
		358	}
		359
326	/*****************************************************************************/	360	/*****************************************************************************/
327		361
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	362	static void
335	upheap (WT *timers, int k)	363	upheap (WT *heap, int k)
336	{	364	{
337	WT w = timers [k];	365	WT w = heap [k];
338		366
339	while (k && timers [k >> 1]->at > w->at)	367	while (k && heap [k >> 1]->at > w->at)
340	{	368	{
341	timers [k] = timers [k >> 1];	369	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	370	heap [k]->active = k + 1;
343	k >>= 1;	371	k >>= 1;
344	}	372	}
345		373
346	timers [k] = w;	374	heap [k] = w;
347	timers [k]->active = k + 1;	375	heap [k]->active = k + 1;
348		376
349	}	377	}
350		378
351	static void	379	static void
352	downheap (WT *timers, int N, int k)	380	downheap (WT *heap, int N, int k)
353	{	381	{
354	WT w = timers [k];	382	WT w = heap [k];
355		383
356	while (k < (N >> 1))	384	while (k < (N >> 1))
357	{	385	{
358	int j = k << 1;	386	int j = k << 1;
359		387
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	388	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	389	++j;
362		390
363	if (w->at <= timers [j]->at)	391	if (w->at <= heap [j]->at)
364	break;	392	break;
365		393
366	timers [k] = timers [j];	394	heap [k] = heap [j];
367	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
368	k = j;	396	k = j;
369	}	397	}
370		398
371	timers [k] = w;	399	heap [k] = w;
372	timers [k]->active = k + 1;	400	heap [k]->active = k + 1;
373	}	401	}
374		402
375	/*****************************************************************************/	403	/*****************************************************************************/
376		404
377	typedef struct	405	typedef struct
378	{	406	{
379	struct ev_signal *head;	407	struct ev_watcher_list *head;
380	sig_atomic_t volatile gotsig;	408	sig_atomic_t volatile gotsig;
381	} ANSIG;	409	} ANSIG;
382		410
383	static ANSIG *signals;	411	static ANSIG *signals;
384	static int signalmax;	412	static int signalmax;
385		413
386	static int sigpipe [2];	414	static int sigpipe [2];
387	static sig_atomic_t volatile gotsig;	415	static sig_atomic_t volatile gotsig;
388	static struct ev_io sigev;
389		416
390	static void	417	static void
391	signals_init (ANSIG *base, int count)	418	signals_init (ANSIG *base, int count)
392	{	419	{
393	while (count--)	420	while (count--)
…		…
404	{	431	{
405	signals [signum - 1].gotsig = 1;	432	signals [signum - 1].gotsig = 1;
406		433
407	if (!gotsig)	434	if (!gotsig)
408	{	435	{
		436	int old_errno = errno;
409	gotsig = 1;	437	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	438	write (sigpipe [1], &signum, 1);
		439	errno = old_errno;
411	}	440	}
412	}	441	}
413		442
414	static void	443	static void
415	sigcb (struct ev_io *iow, int revents)	444	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	445	{
417	struct ev_signal *w;	446	struct ev_watcher_list *w;
418	int signum;	447	int signum;
419		448
420	read (sigpipe [0], &revents, 1);	449	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	450	gotsig = 0;
422		451
…		…
424	if (signals [signum].gotsig)	453	if (signals [signum].gotsig)
425	{	454	{
426	signals [signum].gotsig = 0;	455	signals [signum].gotsig = 0;
427		456
428	for (w = signals [signum].head; w; w = w->next)	457	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);	458	event (EV_A_ (W)w, EV_SIGNAL);
430	}	459	}
431	}	460	}
432		461
433	static void	462	static void
434	siginit (void)	463	siginit (EV_P)
435	{	464	{
		465	#ifndef WIN32
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438		468
439	/* rather than sort out wether we really need nb, set it */	469	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		472	#endif
442		473
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	474	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	475	ev_io_start (EV_A_ &sigev);
		476	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	477	}
446		478
447	/*****************************************************************************/	479	/*****************************************************************************/
448		480
449	static struct ev_idle **idles;	481	#ifndef WIN32
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459
460	static struct ev_child *childs [PID_HASHSIZE];
461	static struct ev_signal childev;
462		482
463	#ifndef WCONTINUED	483	#ifndef WCONTINUED
464	# define WCONTINUED 0	484	# define WCONTINUED 0
465	#endif	485	#endif
466		486
467	static void	487	static void
468	childcb (struct ev_signal *sw, int revents)	488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	489	{
470	struct ev_child *w;	490	struct ev_child *w;
		491
		492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		493	if (w->pid == pid \|\| !w->pid)
		494	{
		495	w->priority = sw->priority; /* need to do it now */
		496	w->rpid = pid;
		497	w->rstatus = status;
		498	event (EV_A_ (W)w, EV_CHILD);
		499	}
		500	}
		501
		502	static void
		503	childcb (EV_P_ struct ev_signal *sw, int revents)
		504	{
471	int pid, status;	505	int pid, status;
472		506
473	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	508	{
475	if (w->pid == pid \|\| !w->pid)	509	/* make sure we are called again until all childs have been reaped */
476	{	510	event (EV_A_ (W)sw, EV_SIGNAL);
477	w->status = status;	511
478	event ((W)w, EV_CHILD);	512	child_reap (EV_A_ sw, pid, pid, status);
479	}	513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		514	}
480	}	515	}
		516
		517	#endif
481		518
482	/*****************************************************************************/	519	/*****************************************************************************/
483		520
		521	#if EV_USE_KQUEUE
		522	# include "ev_kqueue.c"
		523	#endif
484	#if EV_USE_EPOLL	524	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	525	# include "ev_epoll.c"
486	#endif	526	#endif
487	#if EV_USE_POLL	527	#if EV_USEV_POLL
488	# include "ev_poll.c"	528	# include "ev_poll.c"
489	#endif	529	#endif
490	#if EV_USE_SELECT	530	#if EV_USE_SELECT
491	# include "ev_select.c"	531	# include "ev_select.c"
492	#endif	532	#endif
…		…
501	ev_version_minor (void)	541	ev_version_minor (void)
502	{	542	{
503	return EV_VERSION_MINOR;	543	return EV_VERSION_MINOR;
504	}	544	}
505		545
506	/* return true if we are running with elevated privileges and ignore env variables */	546	/* return true if we are running with elevated privileges and should ignore env variables */
507	static int	547	static int
508	enable_secure ()	548	enable_secure (void)
509	{	549	{
		550	#ifdef WIN32
		551	return 0;
		552	#else
510	return getuid () != geteuid ()	553	return getuid () != geteuid ()
511	\|\| getgid () != getegid ();	554	\|\| getgid () != getegid ();
		555	#endif
512	}	556	}
513		557
514	int ev_init (int methods)	558	int
		559	ev_method (EV_P)
515	{	560	{
		561	return method;
		562	}
		563
		564	static void
		565	loop_init (EV_P_ int methods)
		566	{
516	if (!ev_method)	567	if (!method)
517	{	568	{
518	#if EV_USE_MONOTONIC	569	#if EV_USE_MONOTONIC
519	{	570	{
520	struct timespec ts;	571	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	573	have_monotonic = 1;
523	}	574	}
524	#endif	575	#endif
525		576
526	ev_now = ev_time ();	577	rt_now = ev_time ();
527	now = get_clock ();	578	mn_now = get_clock ();
528	now_floor = now;	579	now_floor = mn_now;
529	diff = ev_now - now;	580	rtmn_diff = rt_now - mn_now;
530
531	if (pipe (sigpipe))
532	return 0;
533		581
534	if (methods == EVMETHOD_AUTO)	582	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))	583	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	584	methods = atoi (getenv ("LIBEV_METHODS"));
537	else	585	else
538	methods = EVMETHOD_ANY;	586	methods = EVMETHOD_ANY;
539		587
540	ev_method = 0;	588	method = 0;
		589	#if EV_USE_KQUEUE
		590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		591	#endif
541	#if EV_USE_EPOLL	592	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
543	#endif	594	#endif
544	#if EV_USE_POLL	595	#if EV_USEV_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
546	#endif	597	#endif
547	#if EV_USE_SELECT	598	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
549	#endif	600	#endif
		601	}
		602	}
550		603
		604	void
		605	loop_destroy (EV_P)
		606	{
		607	#if EV_USE_KQUEUE
		608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		609	#endif
		610	#if EV_USE_EPOLL
		611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		612	#endif
		613	#if EV_USEV_POLL
		614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		615	#endif
		616	#if EV_USE_SELECT
		617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		618	#endif
		619
		620	method = 0;
		621	/TODO/
		622	}
		623
		624	void
		625	loop_fork (EV_P)
		626	{
		627	/TODO/
		628	#if EV_USE_EPOLL
		629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		630	#endif
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		633	#endif
		634	}
		635
		636	#if EV_MULTIPLICITY
		637	struct ev_loop *
		638	ev_loop_new (int methods)
		639	{
		640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		641
		642	loop_init (EV_A_ methods);
		643
		644	if (ev_methods (EV_A))
		645	return loop;
		646
		647	return 0;
		648	}
		649
		650	void
		651	ev_loop_destroy (EV_P)
		652	{
		653	loop_destroy (EV_A);
		654	free (loop);
		655	}
		656
		657	void
		658	ev_loop_fork (EV_P)
		659	{
		660	loop_fork (EV_A);
		661	}
		662
		663	#endif
		664
		665	#if EV_MULTIPLICITY
		666	struct ev_loop default_loop_struct;
		667	static struct ev_loop *default_loop;
		668
		669	struct ev_loop *
		670	#else
		671	static int default_loop;
		672
		673	int
		674	#endif
		675	ev_default_loop (int methods)
		676	{
		677	if (sigpipe [0] == sigpipe [1])
		678	if (pipe (sigpipe))
		679	return 0;
		680
		681	if (!default_loop)
		682	{
		683	#if EV_MULTIPLICITY
		684	struct ev_loop *loop = default_loop = &default_loop_struct;
		685	#else
		686	default_loop = 1;
		687	#endif
		688
		689	loop_init (EV_A_ methods);
		690
551	if (ev_method)	691	if (ev_method (EV_A))
552	{	692	{
553	ev_watcher_init (&sigev, sigcb);	693	ev_watcher_init (&sigev, sigcb);
		694	ev_set_priority (&sigev, EV_MAXPRI);
554	siginit ();	695	siginit (EV_A);
555		696
		697	#ifndef WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	698	ev_signal_init (&childev, childcb, SIGCHLD);
		699	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	700	ev_signal_start (EV_A_ &childev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
		702	#endif
558	}	703	}
		704	else
		705	default_loop = 0;
559	}	706	}
560		707
561	return ev_method;	708	return default_loop;
562	}	709	}
563		710
564	/*****************************************************************************/
565
566	void	711	void
567	ev_fork_prepare (void)	712	ev_default_destroy (void)
568	{	713	{
569	/* nop */	714	#if EV_MULTIPLICITY
570	}	715	struct ev_loop *loop = default_loop;
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif	716	#endif
585		717
		718	ev_ref (EV_A); /* child watcher */
		719	ev_signal_stop (EV_A_ &childev);
		720
		721	ev_ref (EV_A); /* signal watcher */
586	ev_io_stop (&sigev);	722	ev_io_stop (EV_A_ &sigev);
		723
		724	close (sigpipe [0]); sigpipe [0] = 0;
		725	close (sigpipe [1]); sigpipe [1] = 0;
		726
		727	loop_destroy (EV_A);
		728	}
		729
		730	void
		731	ev_default_fork (EV_P)
		732	{
		733	loop_fork (EV_A);
		734
		735	ev_io_stop (EV_A_ &sigev);
587	close (sigpipe [0]);	736	close (sigpipe [0]);
588	close (sigpipe [1]);	737	close (sigpipe [1]);
589	pipe (sigpipe);	738	pipe (sigpipe);
		739
		740	ev_ref (EV_A); /* signal watcher */
590	siginit ();	741	siginit (EV_A);
591	}	742	}
592		743
593	/*****************************************************************************/	744	/*****************************************************************************/
594		745
595	static void	746	static void
596	call_pending (void)	747	call_pending (EV_P)
597	{	748	{
		749	int pri;
		750
		751	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	752	while (pendingcnt [pri])
599	{	753	{
600	ANPENDING *p = pendings + --pendingcnt;	754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		755
602	if (p->w)	756	if (p->w)
603	{	757	{
604	p->w->pending = 0;	758	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	759	p->w->cb (EV_A_ p->w, p->events);
606	}	760	}
607	}	761	}
608	}	762	}
609		763
610	static void	764	static void
611	timers_reify (void)	765	timers_reify (EV_P)
612	{	766	{
613	while (timercnt && timers [0]->at <= now)	767	while (timercnt && timers [0]->at <= mn_now)
614	{	768	{
615	struct ev_timer *w = timers [0];	769	struct ev_timer *w = timers [0];
616		770
617	/* first reschedule or stop timer */	771	/* first reschedule or stop timer */
618	if (w->repeat)	772	if (w->repeat)
619	{	773	{
620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
621	w->at = now + w->repeat;	775	w->at = mn_now + w->repeat;
622	downheap ((WT *)timers, timercnt, 0);	776	downheap ((WT *)timers, timercnt, 0);
623	}	777	}
624	else	778	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		780
627	event ((W)w, EV_TIMEOUT);	781	event (EV_A_ (W)w, EV_TIMEOUT);
628	}	782	}
629	}	783	}
630		784
631	static void	785	static void
632	periodics_reify (void)	786	periodics_reify (EV_P)
633	{	787	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	788	while (periodiccnt && periodics [0]->at <= rt_now)
635	{	789	{
636	struct ev_periodic *w = periodics [0];	790	struct ev_periodic *w = periodics [0];
637		791
638	/* first reschedule or stop timer */	792	/* first reschedule or stop timer */
639	if (w->interval)	793	if (w->interval)
640	{	794	{
641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
643	downheap ((WT *)periodics, periodiccnt, 0);	797	downheap ((WT *)periodics, periodiccnt, 0);
644	}	798	}
645	else	799	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		801
648	event ((W)w, EV_PERIODIC);	802	event (EV_A_ (W)w, EV_PERIODIC);
649	}	803	}
650	}	804	}
651		805
652	static void	806	static void
653	periodics_reschedule (ev_tstamp diff)	807	periodics_reschedule (EV_P)
654	{	808	{
655	int i;	809	int i;
656		810
657	/* adjust periodics after time jump */	811	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	812	for (i = 0; i < periodiccnt; ++i)
659	{	813	{
660	struct ev_periodic *w = periodics [i];	814	struct ev_periodic *w = periodics [i];
661		815
662	if (w->interval)	816	if (w->interval)
663	{	817	{
664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
665		819
666	if (fabs (diff) >= 1e-4)	820	if (fabs (diff) >= 1e-4)
667	{	821	{
668	ev_periodic_stop (w);	822	ev_periodic_stop (EV_A_ w);
669	ev_periodic_start (w);	823	ev_periodic_start (EV_A_ w);
670		824
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */	825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}	826	}
673	}	827	}
674	}	828	}
675	}	829	}
676		830
677	static int	831	inline int
678	time_update_monotonic (void)	832	time_update_monotonic (EV_P)
679	{	833	{
680	now = get_clock ();	834	mn_now = get_clock ();
681		835
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	837	{
684	ev_now = now + diff;	838	rt_now = rtmn_diff + mn_now;
685	return 0;	839	return 0;
686	}	840	}
687	else	841	else
688	{	842	{
689	now_floor = now;	843	now_floor = mn_now;
690	ev_now = ev_time ();	844	rt_now = ev_time ();
691	return 1;	845	return 1;
692	}	846	}
693	}	847	}
694		848
695	static void	849	static void
696	time_update (void)	850	time_update (EV_P)
697	{	851	{
698	int i;	852	int i;
699		853
700	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	855	if (expect_true (have_monotonic))
702	{	856	{
703	if (time_update_monotonic ())	857	if (time_update_monotonic (EV_A))
704	{	858	{
705	ev_tstamp odiff = diff;	859	ev_tstamp odiff = rtmn_diff;
706		860
707	for (i = 4; --i; ) /* loop a few times, before making important decisions */	861	for (i = 4; --i; ) /* loop a few times, before making important decisions */
708	{	862	{
709	diff = ev_now - now;	863	rtmn_diff = rt_now - mn_now;
710		864
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	866	return; /* all is well */
713		867
714	ev_now = ev_time ();	868	rt_now = ev_time ();
715	now = get_clock ();	869	mn_now = get_clock ();
716	now_floor = now;	870	now_floor = mn_now;
717	}	871	}
718		872
719	periodics_reschedule (diff - odiff);	873	periodics_reschedule (EV_A);
720	/* no timer adjustment, as the monotonic clock doesn't jump */	874	/* no timer adjustment, as the monotonic clock doesn't jump */
		875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
721	}	876	}
722	}	877	}
723	else	878	else
724	#endif	879	#endif
725	{	880	{
726	ev_now = ev_time ();	881	rt_now = ev_time ();
727		882
728	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
729	{	884	{
730	periodics_reschedule (ev_now - now);	885	periodics_reschedule (EV_A);
731		886
732	/* adjust timers. this is easy, as the offset is the same for all */	887	/* adjust timers. this is easy, as the offset is the same for all */
733	for (i = 0; i < timercnt; ++i)	888	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	889	timers [i]->at += rt_now - mn_now;
735	}	890	}
736		891
737	now = ev_now;	892	mn_now = rt_now;
738	}	893	}
739	}	894	}
740		895
741	int ev_loop_done;	896	void
		897	ev_ref (EV_P)
		898	{
		899	++activecnt;
		900	}
742		901
		902	void
		903	ev_unref (EV_P)
		904	{
		905	--activecnt;
		906	}
		907
		908	static int loop_done;
		909
		910	void
743	void ev_loop (int flags)	911	ev_loop (EV_P_ int flags)
744	{	912	{
745	double block;	913	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
747		915
748	do	916	do
749	{	917	{
750	/* queue check watchers (and execute them) */	918	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	919	if (expect_false (preparecnt))
752	{	920	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	922	call_pending (EV_A);
755	}	923	}
756		924
757	/* update fd-related kernel structures */	925	/* update fd-related kernel structures */
758	fd_reify ();	926	fd_reify (EV_A);
759		927
760	/* calculate blocking time */	928	/* calculate blocking time */
761		929
762	/* we only need this for !monotonic clockor timers, but as we basically	930	/* we only need this for !monotonic clockor timers, but as we basically
763	always have timers, we just calculate it always */	931	always have timers, we just calculate it always */
764	#if EV_USE_MONOTONIC	932	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	933	if (expect_true (have_monotonic))
766	time_update_monotonic ();	934	time_update_monotonic (EV_A);
767	else	935	else
768	#endif	936	#endif
769	{	937	{
770	ev_now = ev_time ();	938	rt_now = ev_time ();
771	now = ev_now;	939	mn_now = rt_now;
772	}	940	}
773		941
774	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
775	block = 0.;	943	block = 0.;
776	else	944	else
777	{	945	{
778	block = MAX_BLOCKTIME;	946	block = MAX_BLOCKTIME;
779		947
780	if (timercnt)	948	if (timercnt)
781	{	949	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
783	if (block > to) block = to;	951	if (block > to) block = to;
784	}	952	}
785		953
786	if (periodiccnt)	954	if (periodiccnt)
787	{	955	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
789	if (block > to) block = to;	957	if (block > to) block = to;
790	}	958	}
791		959
792	if (block < 0.) block = 0.;	960	if (block < 0.) block = 0.;
793	}	961	}
794		962
795	method_poll (block);	963	method_poll (EV_A_ block);
796		964
797	/* update ev_now, do magic */	965	/* update rt_now, do magic */
798	time_update ();	966	time_update (EV_A);
799		967
800	/* queue pending timers and reschedule them */	968	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	969	timers_reify (EV_A); /* relative timers called last */
802	periodics_reify (); /* absolute timers called first */	970	periodics_reify (EV_A); /* absolute timers called first */
803		971
804	/* queue idle watchers unless io or timers are pending */	972	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	973	if (!pendingcnt)
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		975
808	/* queue check watchers, to be executed first */	976	/* queue check watchers, to be executed first */
809	if (checkcnt)	977	if (checkcnt)
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		979
812	call_pending ();	980	call_pending (EV_A);
813	}	981	}
814	while (!ev_loop_done);	982	while (activecnt && !loop_done);
815		983
816	if (ev_loop_done != 2)	984	if (loop_done != 2)
817	ev_loop_done = 0;	985	loop_done = 0;
		986	}
		987
		988	void
		989	ev_unloop (EV_P_ int how)
		990	{
		991	loop_done = how;
818	}	992	}
819		993
820	/*****************************************************************************/	994	/*****************************************************************************/
821		995
822	static void	996	inline void
823	wlist_add (WL *head, WL elem)	997	wlist_add (WL *head, WL elem)
824	{	998	{
825	elem->next = *head;	999	elem->next = *head;
826	*head = elem;	1000	*head = elem;
827	}	1001	}
828		1002
829	static void	1003	inline void
830	wlist_del (WL *head, WL elem)	1004	wlist_del (WL *head, WL elem)
831	{	1005	{
832	while (*head)	1006	while (*head)
833	{	1007	{
834	if (*head == elem)	1008	if (*head == elem)
…		…
839		1013
840	head = &(*head)->next;	1014	head = &(*head)->next;
841	}	1015	}
842	}	1016	}
843		1017
844	static void	1018	inline void
845	ev_clear_pending (W w)	1019	ev_clear_pending (EV_P_ W w)
846	{	1020	{
847	if (w->pending)	1021	if (w->pending)
848	{	1022	{
849	pendings [w->pending - 1].w = 0;	1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1024	w->pending = 0;
851	}	1025	}
852	}	1026	}
853		1027
854	static void	1028	inline void
855	ev_start (W w, int active)	1029	ev_start (EV_P_ W w, int active)
856	{	1030	{
		1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1033
857	w->active = active;	1034	w->active = active;
		1035	ev_ref (EV_A);
858	}	1036	}
859		1037
860	static void	1038	inline void
861	ev_stop (W w)	1039	ev_stop (EV_P_ W w)
862	{	1040	{
		1041	ev_unref (EV_A);
863	w->active = 0;	1042	w->active = 0;
864	}	1043	}
865		1044
866	/*****************************************************************************/	1045	/*****************************************************************************/
867		1046
868	void	1047	void
869	ev_io_start (struct ev_io *w)	1048	ev_io_start (EV_P_ struct ev_io *w)
870	{	1049	{
871	int fd = w->fd;	1050	int fd = w->fd;
872		1051
873	if (ev_is_active (w))	1052	if (ev_is_active (w))
874	return;	1053	return;
875		1054
876	assert (("ev_io_start called with negative fd", fd >= 0));	1055	assert (("ev_io_start called with negative fd", fd >= 0));
877		1056
878	ev_start ((W)w, 1);	1057	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1060
882	fd_change (fd);	1061	fd_change (EV_A_ fd);
883	}	1062	}
884		1063
885	void	1064	void
886	ev_io_stop (struct ev_io *w)	1065	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1066	{
888	ev_clear_pending ((W)w);	1067	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1068	if (!ev_is_active (w))
890	return;	1069	return;
891		1070
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1072	ev_stop (EV_A_ (W)w);
894		1073
895	fd_change (w->fd);	1074	fd_change (EV_A_ w->fd);
896	}	1075	}
897		1076
898	void	1077	void
899	ev_timer_start (struct ev_timer *w)	1078	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1079	{
901	if (ev_is_active (w))	1080	if (ev_is_active (w))
902	return;	1081	return;
903		1082
904	w->at += now;	1083	w->at += mn_now;
905		1084
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1086
908	ev_start ((W)w, ++timercnt);	1087	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1088	array_needsize (timers, timermax, timercnt, );
910	timers [timercnt - 1] = w;	1089	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1090	upheap ((WT *)timers, timercnt - 1);
912	}	1091	}
913		1092
914	void	1093	void
915	ev_timer_stop (struct ev_timer *w)	1094	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1095	{
917	ev_clear_pending ((W)w);	1096	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1097	if (!ev_is_active (w))
919	return;	1098	return;
920		1099
921	if (w->active < timercnt--)	1100	if (w->active < timercnt--)
922	{	1101	{
…		…
924	downheap ((WT *)timers, timercnt, w->active - 1);	1103	downheap ((WT *)timers, timercnt, w->active - 1);
925	}	1104	}
926		1105
927	w->at = w->repeat;	1106	w->at = w->repeat;
928		1107
929	ev_stop ((W)w);	1108	ev_stop (EV_A_ (W)w);
930	}	1109	}
931		1110
932	void	1111	void
933	ev_timer_again (struct ev_timer *w)	1112	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1113	{
935	if (ev_is_active (w))	1114	if (ev_is_active (w))
936	{	1115	{
937	if (w->repeat)	1116	if (w->repeat)
938	{	1117	{
939	w->at = now + w->repeat;	1118	w->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1119	downheap ((WT *)timers, timercnt, w->active - 1);
941	}	1120	}
942	else	1121	else
943	ev_timer_stop (w);	1122	ev_timer_stop (EV_A_ w);
944	}	1123	}
945	else if (w->repeat)	1124	else if (w->repeat)
946	ev_timer_start (w);	1125	ev_timer_start (EV_A_ w);
947	}	1126	}
948		1127
949	void	1128	void
950	ev_periodic_start (struct ev_periodic *w)	1129	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1130	{
952	if (ev_is_active (w))	1131	if (ev_is_active (w))
953	return;	1132	return;
954		1133
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956		1135
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1136	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)	1137	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
960		1139
961	ev_start ((W)w, ++periodiccnt);	1140	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1141	array_needsize (periodics, periodicmax, periodiccnt, );
963	periodics [periodiccnt - 1] = w;	1142	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1143	upheap ((WT *)periodics, periodiccnt - 1);
965	}	1144	}
966		1145
967	void	1146	void
968	ev_periodic_stop (struct ev_periodic *w)	1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1148	{
970	ev_clear_pending ((W)w);	1149	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1150	if (!ev_is_active (w))
972	return;	1151	return;
973		1152
974	if (w->active < periodiccnt--)	1153	if (w->active < periodiccnt--)
975	{	1154	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1155	periodics [w->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);
978	}	1157	}
979		1158
980	ev_stop ((W)w);	1159	ev_stop (EV_A_ (W)w);
981	}	1160	}
982		1161
983	void	1162	void
984	ev_signal_start (struct ev_signal *w)	1163	ev_idle_start (EV_P_ struct ev_idle *w)
985	{	1164	{
986	if (ev_is_active (w))	1165	if (ev_is_active (w))
987	return;	1166	return;
988		1167
		1168	ev_start (EV_A_ (W)w, ++idlecnt);
		1169	array_needsize (idles, idlemax, idlecnt, );
		1170	idles [idlecnt - 1] = w;
		1171	}
		1172
		1173	void
		1174	ev_idle_stop (EV_P_ struct ev_idle *w)
		1175	{
		1176	ev_clear_pending (EV_A_ (W)w);
		1177	if (ev_is_active (w))
		1178	return;
		1179
		1180	idles [w->active - 1] = idles [--idlecnt];
		1181	ev_stop (EV_A_ (W)w);
		1182	}
		1183
		1184	void
		1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1186	{
		1187	if (ev_is_active (w))
		1188	return;
		1189
		1190	ev_start (EV_A_ (W)w, ++preparecnt);
		1191	array_needsize (prepares, preparemax, preparecnt, );
		1192	prepares [preparecnt - 1] = w;
		1193	}
		1194
		1195	void
		1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1197	{
		1198	ev_clear_pending (EV_A_ (W)w);
		1199	if (ev_is_active (w))
		1200	return;
		1201
		1202	prepares [w->active - 1] = prepares [--preparecnt];
		1203	ev_stop (EV_A_ (W)w);
		1204	}
		1205
		1206	void
		1207	ev_check_start (EV_P_ struct ev_check *w)
		1208	{
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	ev_start (EV_A_ (W)w, ++checkcnt);
		1213	array_needsize (checks, checkmax, checkcnt, );
		1214	checks [checkcnt - 1] = w;
		1215	}
		1216
		1217	void
		1218	ev_check_stop (EV_P_ struct ev_check *w)
		1219	{
		1220	ev_clear_pending (EV_A_ (W)w);
		1221	if (ev_is_active (w))
		1222	return;
		1223
		1224	checks [w->active - 1] = checks [--checkcnt];
		1225	ev_stop (EV_A_ (W)w);
		1226	}
		1227
		1228	#ifndef SA_RESTART
		1229	# define SA_RESTART 0
		1230	#endif
		1231
		1232	void
		1233	ev_signal_start (EV_P_ struct ev_signal *w)
		1234	{
		1235	#if EV_MULTIPLICITY
		1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1237	#endif
		1238	if (ev_is_active (w))
		1239	return;
		1240
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1242
991	ev_start ((W)w, 1);	1243	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1244	array_needsize (signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1246
995	if (!w->next)	1247	if (!w->next)
996	{	1248	{
997	struct sigaction sa;	1249	struct sigaction sa;
998	sa.sa_handler = sighandler;	1250	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1251	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1253	sigaction (w->signum, &sa, 0);
1002	}	1254	}
1003	}	1255	}
1004		1256
1005	void	1257	void
1006	ev_signal_stop (struct ev_signal *w)	1258	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1259	{
1008	ev_clear_pending ((W)w);	1260	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1261	if (!ev_is_active (w))
1010	return;	1262	return;
1011		1263
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1265	ev_stop (EV_A_ (W)w);
1014		1266
1015	if (!signals [w->signum - 1].head)	1267	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1268	signal (w->signum, SIG_DFL);
1017	}	1269	}
1018		1270
1019	void	1271	void
1020	ev_idle_start (struct ev_idle *w)	1272	ev_child_start (EV_P_ struct ev_child *w)
1021	{	1273	{
		1274	#if EV_MULTIPLICITY
		1275	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1276	#endif
1022	if (ev_is_active (w))	1277	if (ev_is_active (w))
1023	return;	1278	return;
1024		1279
1025	ev_start ((W)w, ++idlecnt);	1280	ev_start (EV_A_ (W)w, 1);
1026	array_needsize (idles, idlemax, idlecnt, );	1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1027	idles [idlecnt - 1] = w;
1028	}	1282	}
1029		1283
1030	void	1284	void
1031	ev_idle_stop (struct ev_idle *w)	1285	ev_child_stop (EV_P_ struct ev_child *w)
1032	{	1286	{
1033	ev_clear_pending ((W)w);	1287	ev_clear_pending (EV_A_ (W)w);
1034	if (ev_is_active (w))	1288	if (ev_is_active (w))
1035	return;	1289	return;
1036		1290
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)
1087	{
1088	if (ev_is_active (w))
1089	return;
1090
1091	ev_start ((W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}
1094
1095	void
1096	ev_child_stop (struct ev_child *w)
1097	{
1098	ev_clear_pending ((W)w);
1099	if (ev_is_active (w))
1100	return;
1101
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1292	ev_stop (EV_A_ (W)w);
1104	}	1293	}
1105		1294
1106	/*****************************************************************************/	1295	/*****************************************************************************/
1107		1296
1108	struct ev_once	1297	struct ev_once
…		…
1112	void (cb)(int revents, void arg);	1301	void (cb)(int revents, void arg);
1113	void *arg;	1302	void *arg;
1114	};	1303	};
1115		1304
1116	static void	1305	static void
1117	once_cb (struct ev_once *once, int revents)	1306	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1307	{
1119	void (cb)(int revents, void arg) = once->cb;	1308	void (cb)(int revents, void arg) = once->cb;
1120	void *arg = once->arg;	1309	void *arg = once->arg;
1121		1310
1122	ev_io_stop (&once->io);	1311	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1312	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1313	free (once);
1125		1314
1126	cb (revents, arg);	1315	cb (revents, arg);
1127	}	1316	}
1128		1317
1129	static void	1318	static void
1130	once_cb_io (struct ev_io *w, int revents)	1319	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1320	{
1132	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1321	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1133	}	1322	}
1134		1323
1135	static void	1324	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1326	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1327	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1139	}	1328	}
1140		1329
1141	void	1330	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1143	{	1332	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1333	struct ev_once *once = malloc (sizeof (struct ev_once));
1145		1334
1146	if (!once)	1335	if (!once)
1147	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1152		1341
1153	ev_watcher_init (&once->io, once_cb_io);	1342	ev_watcher_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1343	if (fd >= 0)
1155	{	1344	{
1156	ev_io_set (&once->io, fd, events);	1345	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1346	ev_io_start (EV_A_ &once->io);
1158	}	1347	}
1159		1348
1160	ev_watcher_init (&once->to, once_cb_to);	1349	ev_watcher_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1350	if (timeout >= 0.)
1162	{	1351	{
1163	ev_timer_set (&once->to, timeout, 0.);	1352	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1353	ev_timer_start (EV_A_ &once->to);
1165	}	1354	}
1166	}	1355	}
1167	}	1356	}
1168		1357
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}
1246
1247	#endif
1248
1249
1250
1251

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Comparing libev/ev.c (file contents): Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs. Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC