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

Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 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	#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
		53	/**/
		54
51	#ifndef EV_USE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
52	# ifdef CLOCK_MONOTONIC
53	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
54	# endif
55	#endif	57	#endif
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
		63	#ifndef EV_USEV_POLL
		64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
61	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
62	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
63	#endif	69	#endif
64		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
		81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
		83	# define EV_USE_MONOTONIC 0
		84	#endif
		85
65	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
66	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
67	#endif	89	#endif
68	#ifndef EV_USE_REALTIME	90
69	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
70	#endif
71		92
72	#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) */
73	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
74	#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 */
75	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* 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 */
76		97
77	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
78		113
79	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
80	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
81	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
82		117
83	static ev_tstamp now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
84	ev_tstamp ev_now;
85	int ev_method;
86
87	static int have_monotonic; /* runtime */
88
89	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
90	static void (*method_modify)(int fd, int oev, int nev);
91	static void (*method_poll)(ev_tstamp timeout);
92		119
93	/*****************************************************************************/	120	/*****************************************************************************/
94		121
95	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#ifdef EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
96	ev_time (void)	156	ev_time (void)
97	{	157	{
98	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
99	struct timespec ts;	159	struct timespec ts;
100	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
104	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
105	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
106	#endif	166	#endif
107	}	167	}
108		168
109	static ev_tstamp	169	inline ev_tstamp
110	get_clock (void)	170	get_clock (void)
111	{	171	{
112	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
113	if (have_monotonic)	173	if (expect_true (have_monotonic))
114	{	174	{
115	struct timespec ts;	175	struct timespec ts;
116	clock_gettime (CLOCK_MONOTONIC, &ts);	176	clock_gettime (CLOCK_MONOTONIC, &ts);
117	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
118	}	178	}
119	#endif	179	#endif
120		180
121	return ev_time ();	181	return ev_time ();
122	}	182	}
123		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
		188	}
		189
124	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
125		191
126	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
127	if ((cnt) > cur) \	193	if (expect_false ((cnt) > cur)) \
128	{ \	194	{ \
129	int newcnt = cur; \	195	int newcnt = cur; \
130	do \	196	do \
131	{ \	197	{ \
132	newcnt = array_roundsize (base, newcnt << 1); \	198	newcnt = array_roundsize (base, newcnt << 1); \
…		…
138	cur = newcnt; \	204	cur = newcnt; \
139	}	205	}
140		206
141	/*****************************************************************************/	207	/*****************************************************************************/
142		208
143	typedef struct
144	{
145	struct ev_io *head;
146	unsigned char events;
147	unsigned char reify;
148	} ANFD;
149
150	static ANFD *anfds;
151	static int anfdmax;
152
153	static void	209	static void
154	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
155	{	211	{
156	while (count--)	212	while (count--)
157	{	213	{
…		…
161		217
162	++base;	218	++base;
163	}	219	}
164	}	220	}
165		221
166	typedef struct
167	{
168	W w;
169	int events;
170	} ANPENDING;
171
172	static ANPENDING *pendings;
173	static int pendingmax, pendingcnt;
174
175	static void	222	static void
176	event (W w, int events)	223	event (EV_P_ W w, int events)
177	{	224	{
178	if (w->pending)	225	if (w->pending)
179	{	226	{
180	pendings [w->pending - 1].events \|= events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
181	return;	228	return;
182	}	229	}
183		230
184	w->pending = ++pendingcnt;	231	w->pending = ++pendingcnt [ABSPRI (w)];
185	array_needsize (pendings, pendingmax, pendingcnt, );	232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
186	pendings [pendingcnt - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
187	pendings [pendingcnt - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
188	}	235	}
189		236
190	static void	237	static void
191	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
192	{	239	{
193	int i;	240	int i;
194		241
195	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
196	event (events [i], type);	243	event (EV_A_ events [i], type);
197	}	244	}
198		245
199	static void	246	static void
200	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
201	{	248	{
202	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
203	struct ev_io *w;	250	struct ev_io *w;
204		251
205	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
206	{	253	{
207	int ev = w->events & events;	254	int ev = w->events & events;
208		255
209	if (ev)	256	if (ev)
210	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
211	}	258	}
212	}	259	}
213		260
214	/*****************************************************************************/	261	/*****************************************************************************/
215		262
216	static int *fdchanges;
217	static int fdchangemax, fdchangecnt;
218
219	static void	263	static void
220	fd_reify (void)	264	fd_reify (EV_P)
221	{	265	{
222	int i;	266	int i;
223		267
224	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
225	{	269	{
…		…
227	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
228	struct ev_io *w;	272	struct ev_io *w;
229		273
230	int events = 0;	274	int events = 0;
231		275
232	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
233	events \|= w->events;	277	events \|= w->events;
234		278
235	anfd->reify = 0;	279	anfd->reify = 0;
236		280
237	if (anfd->events != events)	281	if (anfd->events != events)
238	{	282	{
239	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
240	anfd->events = events;	284	anfd->events = events;
241	}	285	}
242	}	286	}
243		287
244	fdchangecnt = 0;	288	fdchangecnt = 0;
245	}	289	}
246		290
247	static void	291	static void
248	fd_change (int fd)	292	fd_change (EV_P_ int fd)
249	{	293	{
250	if (anfds [fd].reify \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
251	return;	295	return;
252		296
253	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
255	++fdchangecnt;	299	++fdchangecnt;
256	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
257	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
258	}	302	}
259		303
		304	static void
		305	fd_kill (EV_P_ int fd)
		306	{
		307	struct ev_io *w;
		308
		309	while ((w = (struct ev_io *)anfds [fd].head))
		310	{
		311	ev_io_stop (EV_A_ w);
		312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		313	}
		314	}
		315
260	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
261	static void	317	static void
262	fd_recheck (void)	318	fd_ebadf (EV_P)
263	{	319	{
264	int fd;	320	int fd;
265		321
266	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
267	if (anfds [fd].events)	323	if (anfds [fd].events)
268	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
269	while (anfds [fd].head)	325	fd_kill (EV_A_ fd);
		326	}
		327
		328	/* called on ENOMEM in select/poll to kill some fds and retry */
		329	static void
		330	fd_enomem (EV_P)
		331	{
		332	int fd = anfdmax;
		333
		334	while (fd--)
		335	if (anfds [fd].events)
270	{	336	{
271	ev_io_stop (anfds [fd].head);	337	close (fd);
272	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	338	fd_kill (EV_A_ fd);
		339	return;
273	}	340	}
274	}	341	}
275		342
276	/*****************************************************************************/	343	/*****************************************************************************/
277		344
278	static struct ev_timer **timers;
279	static int timermax, timercnt;
280
281	static struct ev_periodic **periodics;
282	static int periodicmax, periodiccnt;
283
284	static void	345	static void
285	upheap (WT *timers, int k)	346	upheap (WT *heap, int k)
286	{	347	{
287	WT w = timers [k];	348	WT w = heap [k];
288		349
289	while (k && timers [k >> 1]->at > w->at)	350	while (k && heap [k >> 1]->at > w->at)
290	{	351	{
291	timers [k] = timers [k >> 1];	352	heap [k] = heap [k >> 1];
292	timers [k]->active = k + 1;	353	heap [k]->active = k + 1;
293	k >>= 1;	354	k >>= 1;
294	}	355	}
295		356
296	timers [k] = w;	357	heap [k] = w;
297	timers [k]->active = k + 1;	358	heap [k]->active = k + 1;
298		359
299	}	360	}
300		361
301	static void	362	static void
302	downheap (WT *timers, int N, int k)	363	downheap (WT *heap, int N, int k)
303	{	364	{
304	WT w = timers [k];	365	WT w = heap [k];
305		366
306	while (k < (N >> 1))	367	while (k < (N >> 1))
307	{	368	{
308	int j = k << 1;	369	int j = k << 1;
309		370
310	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
311	++j;	372	++j;
312		373
313	if (w->at <= timers [j]->at)	374	if (w->at <= heap [j]->at)
314	break;	375	break;
315		376
316	timers [k] = timers [j];	377	heap [k] = heap [j];
317	timers [k]->active = k + 1;	378	heap [k]->active = k + 1;
318	k = j;	379	k = j;
319	}	380	}
320		381
321	timers [k] = w;	382	heap [k] = w;
322	timers [k]->active = k + 1;	383	heap [k]->active = k + 1;
323	}	384	}
324		385
325	/*****************************************************************************/	386	/*****************************************************************************/
326		387
327	typedef struct	388	typedef struct
328	{	389	{
329	struct ev_signal *head;	390	struct ev_watcher_list *head;
330	sig_atomic_t volatile gotsig;	391	sig_atomic_t volatile gotsig;
331	} ANSIG;	392	} ANSIG;
332		393
333	static ANSIG *signals;	394	static ANSIG *signals;
334	static int signalmax;	395	static int signalmax;
335		396
336	static int sigpipe [2];	397	static int sigpipe [2];
337	static sig_atomic_t volatile gotsig;	398	static sig_atomic_t volatile gotsig;
338	static struct ev_io sigev;
339		399
340	static void	400	static void
341	signals_init (ANSIG *base, int count)	401	signals_init (ANSIG *base, int count)
342	{	402	{
343	while (count--)	403	while (count--)
…		…
354	{	414	{
355	signals [signum - 1].gotsig = 1;	415	signals [signum - 1].gotsig = 1;
356		416
357	if (!gotsig)	417	if (!gotsig)
358	{	418	{
		419	int old_errno = errno;
359	gotsig = 1;	420	gotsig = 1;
360	write (sigpipe [1], &signum, 1);	421	write (sigpipe [1], &signum, 1);
		422	errno = old_errno;
361	}	423	}
362	}	424	}
363		425
364	static void	426	static void
365	sigcb (struct ev_io *iow, int revents)	427	sigcb (EV_P_ struct ev_io *iow, int revents)
366	{	428	{
367	struct ev_signal *w;	429	struct ev_watcher_list *w;
368	int sig;	430	int signum;
369		431
370	read (sigpipe [0], &revents, 1);	432	read (sigpipe [0], &revents, 1);
371	gotsig = 0;	433	gotsig = 0;
372		434
373	for (sig = signalmax; sig--; )	435	for (signum = signalmax; signum--; )
374	if (signals [sig].gotsig)	436	if (signals [signum].gotsig)
375	{	437	{
376	signals [sig].gotsig = 0;	438	signals [signum].gotsig = 0;
377		439
378	for (w = signals [sig].head; w; w = w->next)	440	for (w = signals [signum].head; w; w = w->next)
379	event ((W)w, EV_SIGNAL);	441	event (EV_A_ (W)w, EV_SIGNAL);
380	}	442	}
381	}	443	}
382		444
383	static void	445	static void
384	siginit (void)	446	siginit (EV_P)
385	{	447	{
		448	#ifndef WIN32
386	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
387	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
388		451
389	/* rather than sort out wether we really need nb, set it */	452	/* rather than sort out wether we really need nb, set it */
390	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
391	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		455	#endif
392		456
393	ev_io_set (&sigev, sigpipe [0], EV_READ);	457	ev_io_set (&sigev, sigpipe [0], EV_READ);
394	ev_io_start (&sigev);	458	ev_io_start (EV_A_ &sigev);
		459	ev_unref (EV_A); /* child watcher should not keep loop alive */
395	}	460	}
396		461
397	/*****************************************************************************/	462	/*****************************************************************************/
398		463
399	static struct ev_idle **idles;	464	#ifndef WIN32
400	static int idlemax, idlecnt;
401
402	static struct ev_prepare **prepares;
403	static int preparemax, preparecnt;
404
405	static struct ev_check **checks;
406	static int checkmax, checkcnt;
407
408	/*****************************************************************************/
409
410	static struct ev_child *childs [PID_HASHSIZE];
411	static struct ev_signal childev;
412		465
413	#ifndef WCONTINUED	466	#ifndef WCONTINUED
414	# define WCONTINUED 0	467	# define WCONTINUED 0
415	#endif	468	#endif
416		469
417	static void	470	static void
418	childcb (struct ev_signal *sw, int revents)	471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
419	{	472	{
420	struct ev_child *w;	473	struct ev_child *w;
		474
		475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		476	if (w->pid == pid \|\| !w->pid)
		477	{
		478	w->priority = sw->priority; /* need to do it now */
		479	w->rpid = pid;
		480	w->rstatus = status;
		481	event (EV_A_ (W)w, EV_CHILD);
		482	}
		483	}
		484
		485	static void
		486	childcb (EV_P_ struct ev_signal *sw, int revents)
		487	{
421	int pid, status;	488	int pid, status;
422		489
423	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
424	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	491	{
425	if (w->pid == pid \|\| w->pid == -1)	492	/* make sure we are called again until all childs have been reaped */
426	{	493	event (EV_A_ (W)sw, EV_SIGNAL);
427	w->status = status;	494
428	event ((W)w, EV_CHILD);	495	child_reap (EV_A_ sw, pid, pid, status);
429	}	496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		497	}
430	}	498	}
		499
		500	#endif
431		501
432	/*****************************************************************************/	502	/*****************************************************************************/
433		503
		504	#if EV_USE_KQUEUE
		505	# include "ev_kqueue.c"
		506	#endif
434	#if EV_USE_EPOLL	507	#if EV_USE_EPOLL
435	# include "ev_epoll.c"	508	# include "ev_epoll.c"
436	#endif	509	#endif
		510	#if EV_USEV_POLL
		511	# include "ev_poll.c"
		512	#endif
437	#if EV_USE_SELECT	513	#if EV_USE_SELECT
438	# include "ev_select.c"	514	# include "ev_select.c"
439	#endif	515	#endif
440		516
441	int	517	int
…		…
448	ev_version_minor (void)	524	ev_version_minor (void)
449	{	525	{
450	return EV_VERSION_MINOR;	526	return EV_VERSION_MINOR;
451	}	527	}
452		528
453	int ev_init (int flags)	529	/* return true if we are running with elevated privileges and should ignore env variables */
		530	static int
		531	enable_secure (void)
454	{	532	{
		533	#ifdef WIN32
		534	return 0;
		535	#else
		536	return getuid () != geteuid ()
		537	\|\| getgid () != getegid ();
		538	#endif
		539	}
		540
		541	int
		542	ev_method (EV_P)
		543	{
		544	return method;
		545	}
		546
		547	static void
		548	loop_init (EV_P_ int methods)
		549	{
455	if (!ev_method)	550	if (!method)
456	{	551	{
457	#if EV_USE_MONOTONIC	552	#if EV_USE_MONOTONIC
458	{	553	{
459	struct timespec ts;	554	struct timespec ts;
460	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
461	have_monotonic = 1;	556	have_monotonic = 1;
462	}	557	}
463	#endif	558	#endif
464		559
465	ev_now = ev_time ();	560	rt_now = ev_time ();
466	now = get_clock ();	561	mn_now = get_clock ();
		562	now_floor = mn_now;
467	diff = ev_now - now;	563	rtmn_diff = rt_now - mn_now;
468		564
469	if (pipe (sigpipe))	565	if (pipe (sigpipe))
470	return 0;	566	return 0;
471		567
		568	if (methods == EVMETHOD_AUTO)
		569	if (!enable_secure () && getenv ("LIBmethodS"))
		570	methods = atoi (getenv ("LIBmethodS"));
		571	else
472	ev_method = EVMETHOD_NONE;	572	methods = EVMETHOD_ANY;
		573
		574	method = 0;
		575	#if EV_USE_KQUEUE
		576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		577	#endif
473	#if EV_USE_EPOLL	578	#if EV_USE_EPOLL
474	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		580	#endif
		581	#if EV_USEV_POLL
		582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
475	#endif	583	#endif
476	#if EV_USE_SELECT	584	#if EV_USE_SELECT
477	if (ev_method == EVMETHOD_NONE) select_init (flags);	585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
478	#endif	586	#endif
479		587
480	if (ev_method)	588	if (method)
481	{	589	{
482	ev_watcher_init (&sigev, sigcb);	590	ev_watcher_init (&sigev, sigcb);
		591	ev_set_priority (&sigev, EV_MAXPRI);
483	siginit ();	592	siginit (EV_A);
484		593
		594	#ifndef WIN32
485	ev_signal_init (&childev, childcb, SIGCHLD);	595	ev_signal_init (&childev, childcb, SIGCHLD);
		596	ev_set_priority (&childev, EV_MAXPRI);
486	ev_signal_start (&childev);	597	ev_signal_start (EV_A_ &childev);
		598	ev_unref (EV_A); /* child watcher should not keep loop alive */
		599	#endif
487	}	600	}
488	}	601	}
489		602
490	return ev_method;	603	return method;
491	}	604	}
		605
		606	#ifdef EV_MULTIPLICITY
		607
		608	struct ev_loop *
		609	ev_loop_new (int methods)
		610	{
		611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		612
		613	loop_init (EV_A_ methods);
		614
		615	return loop;
		616	}
		617
		618	void
		619	ev_loop_delete (EV_P)
		620	{
		621	/TODO/
		622	free (loop);
		623	}
		624
		625	#else
		626
		627	int
		628	ev_init (int methods)
		629	{
		630	loop_init ();
		631	}
		632
		633	#endif
492		634
493	/*****************************************************************************/	635	/*****************************************************************************/
494		636
495	void	637	void
496	ev_fork_prepare (void)	638	ev_fork_prepare (void)
…		…
505	}	647	}
506		648
507	void	649	void
508	ev_fork_child (void)	650	ev_fork_child (void)
509	{	651	{
		652	/TODO/
		653	#if !EV_MULTIPLICITY
510	#if EV_USE_EPOLL	654	#if EV_USE_EPOLL
511	if (ev_method == EVMETHOD_EPOLL)	655	if (method == EVMETHOD_EPOLL)
512	epoll_postfork_child ();	656	epoll_postfork_child (EV_A);
513	#endif	657	#endif
514		658
515	ev_io_stop (&sigev);	659	ev_io_stop (EV_A_ &sigev);
516	close (sigpipe [0]);	660	close (sigpipe [0]);
517	close (sigpipe [1]);	661	close (sigpipe [1]);
518	pipe (sigpipe);	662	pipe (sigpipe);
519	siginit ();	663	siginit (EV_A);
		664	#endif
520	}	665	}
521		666
522	/*****************************************************************************/	667	/*****************************************************************************/
523		668
524	static void	669	static void
525	call_pending (void)	670	call_pending (EV_P)
526	{	671	{
		672	int pri;
		673
		674	for (pri = NUMPRI; pri--; )
527	while (pendingcnt)	675	while (pendingcnt [pri])
528	{	676	{
529	ANPENDING *p = pendings + --pendingcnt;	677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
530		678
531	if (p->w)	679	if (p->w)
532	{	680	{
533	p->w->pending = 0;	681	p->w->pending = 0;
534	p->w->cb (p->w, p->events);	682	p->w->cb (EV_A_ p->w, p->events);
535	}	683	}
536	}	684	}
537	}	685	}
538		686
539	static void	687	static void
540	timers_reify (void)	688	timers_reify (EV_P)
541	{	689	{
542	while (timercnt && timers [0]->at <= now)	690	while (timercnt && timers [0]->at <= mn_now)
543	{	691	{
544	struct ev_timer *w = timers [0];	692	struct ev_timer *w = timers [0];
545		693
546	/* first reschedule or stop timer */	694	/* first reschedule or stop timer */
547	if (w->repeat)	695	if (w->repeat)
548	{	696	{
549	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
550	w->at = now + w->repeat;	698	w->at = mn_now + w->repeat;
551	downheap ((WT *)timers, timercnt, 0);	699	downheap ((WT *)timers, timercnt, 0);
552	}	700	}
553	else	701	else
554	ev_timer_stop (w); /* nonrepeating: stop timer */	702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
555		703
556	event ((W)w, EV_TIMEOUT);	704	event (EV_A_ (W)w, EV_TIMEOUT);
557	}	705	}
558	}	706	}
559		707
560	static void	708	static void
561	periodics_reify (void)	709	periodics_reify (EV_P)
562	{	710	{
563	while (periodiccnt && periodics [0]->at <= ev_now)	711	while (periodiccnt && periodics [0]->at <= rt_now)
564	{	712	{
565	struct ev_periodic *w = periodics [0];	713	struct ev_periodic *w = periodics [0];
566		714
567	/* first reschedule or stop timer */	715	/* first reschedule or stop timer */
568	if (w->interval)	716	if (w->interval)
569	{	717	{
570	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
571	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
572	downheap ((WT *)periodics, periodiccnt, 0);	720	downheap ((WT *)periodics, periodiccnt, 0);
573	}	721	}
574	else	722	else
575	ev_periodic_stop (w); /* nonrepeating: stop timer */	723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
576		724
577	event ((W)w, EV_PERIODIC);	725	event (EV_A_ (W)w, EV_PERIODIC);
578	}	726	}
579	}	727	}
580		728
581	static void	729	static void
582	periodics_reschedule (ev_tstamp diff)	730	periodics_reschedule (EV_P)
583	{	731	{
584	int i;	732	int i;
585		733
586	/* adjust periodics after time jump */	734	/* adjust periodics after time jump */
587	for (i = 0; i < periodiccnt; ++i)	735	for (i = 0; i < periodiccnt; ++i)
588	{	736	{
589	struct ev_periodic *w = periodics [i];	737	struct ev_periodic *w = periodics [i];
590		738
591	if (w->interval)	739	if (w->interval)
592	{	740	{
593	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
594		742
595	if (fabs (diff) >= 1e-4)	743	if (fabs (diff) >= 1e-4)
596	{	744	{
597	ev_periodic_stop (w);	745	ev_periodic_stop (EV_A_ w);
598	ev_periodic_start (w);	746	ev_periodic_start (EV_A_ w);
599		747
600	i = 0; /* restart loop, inefficient, but time jumps should be rare */	748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
601	}	749	}
602	}	750	}
603	}	751	}
604	}	752	}
605		753
		754	inline int
		755	time_update_monotonic (EV_P)
		756	{
		757	mn_now = get_clock ();
		758
		759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		760	{
		761	rt_now = rtmn_diff + mn_now;
		762	return 0;
		763	}
		764	else
		765	{
		766	now_floor = mn_now;
		767	rt_now = ev_time ();
		768	return 1;
		769	}
		770	}
		771
606	static void	772	static void
607	time_update (void)	773	time_update (EV_P)
608	{	774	{
609	int i;	775	int i;
610		776
611	ev_now = ev_time ();	777	#if EV_USE_MONOTONIC
612
613	if (have_monotonic)	778	if (expect_true (have_monotonic))
614	{	779	{
615	ev_tstamp odiff = diff;	780	if (time_update_monotonic (EV_A))
616
617	for (i = 4; --i; ) /* loop a few times, before making important decisions */
618	{	781	{
619	now = get_clock ();	782	ev_tstamp odiff = rtmn_diff;
		783
		784	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		785	{
620	diff = ev_now - now;	786	rtmn_diff = rt_now - mn_now;
621		787
622	if (fabs (odiff - diff) < MIN_TIMEJUMP)	788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
623	return; /* all is well */	789	return; /* all is well */
624		790
625	ev_now = ev_time ();	791	rt_now = ev_time ();
		792	mn_now = get_clock ();
		793	now_floor = mn_now;
		794	}
		795
		796	periodics_reschedule (EV_A);
		797	/* no timer adjustment, as the monotonic clock doesn't jump */
		798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
626	}	799	}
627
628	periodics_reschedule (diff - odiff);
629	/* no timer adjustment, as the monotonic clock doesn't jump */
630	}	800	}
631	else	801	else
		802	#endif
632	{	803	{
633	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	804	rt_now = ev_time ();
		805
		806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
634	{	807	{
635	periodics_reschedule (ev_now - now);	808	periodics_reschedule (EV_A);
636		809
637	/* adjust timers. this is easy, as the offset is the same for all */	810	/* adjust timers. this is easy, as the offset is the same for all */
638	for (i = 0; i < timercnt; ++i)	811	for (i = 0; i < timercnt; ++i)
639	timers [i]->at += diff;	812	timers [i]->at += rt_now - mn_now;
640	}	813	}
641		814
642	now = ev_now;	815	mn_now = rt_now;
643	}	816	}
644	}	817	}
645		818
646	int ev_loop_done;	819	void
		820	ev_ref (EV_P)
		821	{
		822	++activecnt;
		823	}
647		824
		825	void
		826	ev_unref (EV_P)
		827	{
		828	--activecnt;
		829	}
		830
		831	static int loop_done;
		832
		833	void
648	void ev_loop (int flags)	834	ev_loop (EV_P_ int flags)
649	{	835	{
650	double block;	836	double block;
651	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
652		838
653	do	839	do
654	{	840	{
655	/* queue check watchers (and execute them) */	841	/* queue check watchers (and execute them) */
656	if (preparecnt)	842	if (expect_false (preparecnt))
657	{	843	{
658	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
659	call_pending ();	845	call_pending (EV_A);
660	}	846	}
661		847
662	/* update fd-related kernel structures */	848	/* update fd-related kernel structures */
663	fd_reify ();	849	fd_reify (EV_A);
664		850
665	/* calculate blocking time */	851	/* calculate blocking time */
666		852
667	/* we only need this for !monotonic clockor timers, but as we basically	853	/* we only need this for !monotonic clockor timers, but as we basically
668	always have timers, we just calculate it always */	854	always have timers, we just calculate it always */
		855	#if EV_USE_MONOTONIC
		856	if (expect_true (have_monotonic))
		857	time_update_monotonic (EV_A);
		858	else
		859	#endif
		860	{
669	ev_now = ev_time ();	861	rt_now = ev_time ();
		862	mn_now = rt_now;
		863	}
670		864
671	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
672	block = 0.;	866	block = 0.;
673	else	867	else
674	{	868	{
675	block = MAX_BLOCKTIME;	869	block = MAX_BLOCKTIME;
676		870
677	if (timercnt)	871	if (timercnt)
678	{	872	{
679	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
680	if (block > to) block = to;	874	if (block > to) block = to;
681	}	875	}
682		876
683	if (periodiccnt)	877	if (periodiccnt)
684	{	878	{
685	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
686	if (block > to) block = to;	880	if (block > to) block = to;
687	}	881	}
688		882
689	if (block < 0.) block = 0.;	883	if (block < 0.) block = 0.;
690	}	884	}
691		885
692	method_poll (block);	886	method_poll (EV_A_ block);
693		887
694	/* update ev_now, do magic */	888	/* update rt_now, do magic */
695	time_update ();	889	time_update (EV_A);
696		890
697	/* queue pending timers and reschedule them */	891	/* queue pending timers and reschedule them */
698	timers_reify (); /* relative timers called last */	892	timers_reify (EV_A); /* relative timers called last */
699	periodics_reify (); /* absolute timers called first */	893	periodics_reify (EV_A); /* absolute timers called first */
700		894
701	/* queue idle watchers unless io or timers are pending */	895	/* queue idle watchers unless io or timers are pending */
702	if (!pendingcnt)	896	if (!pendingcnt)
703	queue_events ((W *)idles, idlecnt, EV_IDLE);	897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
704		898
705	/* queue check watchers, to be executed first */	899	/* queue check watchers, to be executed first */
706	if (checkcnt)	900	if (checkcnt)
707	queue_events ((W *)checks, checkcnt, EV_CHECK);	901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
708		902
709	call_pending ();	903	call_pending (EV_A);
710	}	904	}
711	while (!ev_loop_done);	905	while (activecnt && !loop_done);
712		906
713	if (ev_loop_done != 2)	907	if (loop_done != 2)
714	ev_loop_done = 0;	908	loop_done = 0;
		909	}
		910
		911	void
		912	ev_unloop (EV_P_ int how)
		913	{
		914	loop_done = how;
715	}	915	}
716		916
717	/*****************************************************************************/	917	/*****************************************************************************/
718		918
719	static void	919	inline void
720	wlist_add (WL *head, WL elem)	920	wlist_add (WL *head, WL elem)
721	{	921	{
722	elem->next = *head;	922	elem->next = *head;
723	*head = elem;	923	*head = elem;
724	}	924	}
725		925
726	static void	926	inline void
727	wlist_del (WL *head, WL elem)	927	wlist_del (WL *head, WL elem)
728	{	928	{
729	while (*head)	929	while (*head)
730	{	930	{
731	if (*head == elem)	931	if (*head == elem)
…		…
736		936
737	head = &(*head)->next;	937	head = &(*head)->next;
738	}	938	}
739	}	939	}
740		940
741	static void	941	inline void
742	ev_clear_pending (W w)	942	ev_clear_pending (EV_P_ W w)
743	{	943	{
744	if (w->pending)	944	if (w->pending)
745	{	945	{
746	pendings [w->pending - 1].w = 0;	946	pendings [ABSPRI (w)][w->pending - 1].w = 0;
747	w->pending = 0;	947	w->pending = 0;
748	}	948	}
749	}	949	}
750		950
751	static void	951	inline void
752	ev_start (W w, int active)	952	ev_start (EV_P_ W w, int active)
753	{	953	{
		954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		956
754	w->active = active;	957	w->active = active;
		958	ev_ref (EV_A);
755	}	959	}
756		960
757	static void	961	inline void
758	ev_stop (W w)	962	ev_stop (EV_P_ W w)
759	{	963	{
		964	ev_unref (EV_A);
760	w->active = 0;	965	w->active = 0;
761	}	966	}
762		967
763	/*****************************************************************************/	968	/*****************************************************************************/
764		969
765	void	970	void
766	ev_io_start (struct ev_io *w)	971	ev_io_start (EV_P_ struct ev_io *w)
767	{	972	{
		973	int fd = w->fd;
		974
768	if (ev_is_active (w))	975	if (ev_is_active (w))
769	return;	976	return;
770		977
771	int fd = w->fd;
772
773	assert (("ev_io_start called with negative fd", fd >= 0));	978	assert (("ev_io_start called with negative fd", fd >= 0));
774		979
775	ev_start ((W)w, 1);	980	ev_start (EV_A_ (W)w, 1);
776	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
777	wlist_add ((WL *)&anfds[fd].head, (WL)w);	982	wlist_add ((WL *)&anfds[fd].head, (WL)w);
778		983
779	fd_change (fd);	984	fd_change (EV_A_ fd);
780	}	985	}
781		986
782	void	987	void
783	ev_io_stop (struct ev_io *w)	988	ev_io_stop (EV_P_ struct ev_io *w)
784	{	989	{
785	ev_clear_pending ((W)w);	990	ev_clear_pending (EV_A_ (W)w);
786	if (!ev_is_active (w))	991	if (!ev_is_active (w))
787	return;	992	return;
788		993
789	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
790	ev_stop ((W)w);	995	ev_stop (EV_A_ (W)w);
791		996
792	fd_change (w->fd);	997	fd_change (EV_A_ w->fd);
793	}	998	}
794		999
795	void	1000	void
796	ev_timer_start (struct ev_timer *w)	1001	ev_timer_start (EV_P_ struct ev_timer *w)
797	{	1002	{
798	if (ev_is_active (w))	1003	if (ev_is_active (w))
799	return;	1004	return;
800		1005
801	w->at += now;	1006	w->at += mn_now;
802		1007
803	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
804		1009
805	ev_start ((W)w, ++timercnt);	1010	ev_start (EV_A_ (W)w, ++timercnt);
806	array_needsize (timers, timermax, timercnt, );	1011	array_needsize (timers, timermax, timercnt, );
807	timers [timercnt - 1] = w;	1012	timers [timercnt - 1] = w;
808	upheap ((WT *)timers, timercnt - 1);	1013	upheap ((WT *)timers, timercnt - 1);
809	}	1014	}
810		1015
811	void	1016	void
812	ev_timer_stop (struct ev_timer *w)	1017	ev_timer_stop (EV_P_ struct ev_timer *w)
813	{	1018	{
814	ev_clear_pending ((W)w);	1019	ev_clear_pending (EV_A_ (W)w);
815	if (!ev_is_active (w))	1020	if (!ev_is_active (w))
816	return;	1021	return;
817		1022
818	if (w->active < timercnt--)	1023	if (w->active < timercnt--)
819	{	1024	{
…		…
821	downheap ((WT *)timers, timercnt, w->active - 1);	1026	downheap ((WT *)timers, timercnt, w->active - 1);
822	}	1027	}
823		1028
824	w->at = w->repeat;	1029	w->at = w->repeat;
825		1030
826	ev_stop ((W)w);	1031	ev_stop (EV_A_ (W)w);
827	}	1032	}
828		1033
829	void	1034	void
830	ev_timer_again (struct ev_timer *w)	1035	ev_timer_again (EV_P_ struct ev_timer *w)
831	{	1036	{
832	if (ev_is_active (w))	1037	if (ev_is_active (w))
833	{	1038	{
834	if (w->repeat)	1039	if (w->repeat)
835	{	1040	{
836	w->at = now + w->repeat;	1041	w->at = mn_now + w->repeat;
837	downheap ((WT *)timers, timercnt, w->active - 1);	1042	downheap ((WT *)timers, timercnt, w->active - 1);
838	}	1043	}
839	else	1044	else
840	ev_timer_stop (w);	1045	ev_timer_stop (EV_A_ w);
841	}	1046	}
842	else if (w->repeat)	1047	else if (w->repeat)
843	ev_timer_start (w);	1048	ev_timer_start (EV_A_ w);
844	}	1049	}
845		1050
846	void	1051	void
847	ev_periodic_start (struct ev_periodic *w)	1052	ev_periodic_start (EV_P_ struct ev_periodic *w)
848	{	1053	{
849	if (ev_is_active (w))	1054	if (ev_is_active (w))
850	return;	1055	return;
851		1056
852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
853		1058
854	/* this formula differs from the one in periodic_reify because we do not always round up */	1059	/* this formula differs from the one in periodic_reify because we do not always round up */
855	if (w->interval)	1060	if (w->interval)
856	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
857		1062
858	ev_start ((W)w, ++periodiccnt);	1063	ev_start (EV_A_ (W)w, ++periodiccnt);
859	array_needsize (periodics, periodicmax, periodiccnt, );	1064	array_needsize (periodics, periodicmax, periodiccnt, );
860	periodics [periodiccnt - 1] = w;	1065	periodics [periodiccnt - 1] = w;
861	upheap ((WT *)periodics, periodiccnt - 1);	1066	upheap ((WT *)periodics, periodiccnt - 1);
862	}	1067	}
863		1068
864	void	1069	void
865	ev_periodic_stop (struct ev_periodic *w)	1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)
866	{	1071	{
867	ev_clear_pending ((W)w);	1072	ev_clear_pending (EV_A_ (W)w);
868	if (!ev_is_active (w))	1073	if (!ev_is_active (w))
869	return;	1074	return;
870		1075
871	if (w->active < periodiccnt--)	1076	if (w->active < periodiccnt--)
872	{	1077	{
873	periodics [w->active - 1] = periodics [periodiccnt];	1078	periodics [w->active - 1] = periodics [periodiccnt];
874	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);
875	}	1080	}
876		1081
877	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
878	}	1083	}
879		1084
		1085	#ifndef SA_RESTART
		1086	# define SA_RESTART 0
		1087	#endif
		1088
880	void	1089	void
881	ev_signal_start (struct ev_signal *w)	1090	ev_signal_start (EV_P_ struct ev_signal *w)
882	{	1091	{
883	if (ev_is_active (w))	1092	if (ev_is_active (w))
884	return;	1093	return;
885		1094
886	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
887		1096
888	ev_start ((W)w, 1);	1097	ev_start (EV_A_ (W)w, 1);
889	array_needsize (signals, signalmax, w->signum, signals_init);	1098	array_needsize (signals, signalmax, w->signum, signals_init);
890	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
891		1100
892	if (!w->next)	1101	if (!w->next)
893	{	1102	{
894	struct sigaction sa;	1103	struct sigaction sa;
895	sa.sa_handler = sighandler;	1104	sa.sa_handler = sighandler;
896	sigfillset (&sa.sa_mask);	1105	sigfillset (&sa.sa_mask);
897	sa.sa_flags = 0;	1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
898	sigaction (w->signum, &sa, 0);	1107	sigaction (w->signum, &sa, 0);
899	}	1108	}
900	}	1109	}
901		1110
902	void	1111	void
903	ev_signal_stop (struct ev_signal *w)	1112	ev_signal_stop (EV_P_ struct ev_signal *w)
904	{	1113	{
905	ev_clear_pending ((W)w);	1114	ev_clear_pending (EV_A_ (W)w);
906	if (!ev_is_active (w))	1115	if (!ev_is_active (w))
907	return;	1116	return;
908		1117
909	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
910	ev_stop ((W)w);	1119	ev_stop (EV_A_ (W)w);
911		1120
912	if (!signals [w->signum - 1].head)	1121	if (!signals [w->signum - 1].head)
913	signal (w->signum, SIG_DFL);	1122	signal (w->signum, SIG_DFL);
914	}	1123	}
915		1124
916	void	1125	void
917	ev_idle_start (struct ev_idle *w)	1126	ev_idle_start (EV_P_ struct ev_idle *w)
918	{	1127	{
919	if (ev_is_active (w))	1128	if (ev_is_active (w))
920	return;	1129	return;
921		1130
922	ev_start ((W)w, ++idlecnt);	1131	ev_start (EV_A_ (W)w, ++idlecnt);
923	array_needsize (idles, idlemax, idlecnt, );	1132	array_needsize (idles, idlemax, idlecnt, );
924	idles [idlecnt - 1] = w;	1133	idles [idlecnt - 1] = w;
925	}	1134	}
926		1135
927	void	1136	void
928	ev_idle_stop (struct ev_idle *w)	1137	ev_idle_stop (EV_P_ struct ev_idle *w)
929	{	1138	{
930	ev_clear_pending ((W)w);	1139	ev_clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1140	if (ev_is_active (w))
932	return;	1141	return;
933		1142
934	idles [w->active - 1] = idles [--idlecnt];	1143	idles [w->active - 1] = idles [--idlecnt];
935	ev_stop ((W)w);	1144	ev_stop (EV_A_ (W)w);
936	}	1145	}
937		1146
938	void	1147	void
939	ev_prepare_start (struct ev_prepare *w)	1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
940	{	1149	{
941	if (ev_is_active (w))	1150	if (ev_is_active (w))
942	return;	1151	return;
943		1152
944	ev_start ((W)w, ++preparecnt);	1153	ev_start (EV_A_ (W)w, ++preparecnt);
945	array_needsize (prepares, preparemax, preparecnt, );	1154	array_needsize (prepares, preparemax, preparecnt, );
946	prepares [preparecnt - 1] = w;	1155	prepares [preparecnt - 1] = w;
947	}	1156	}
948		1157
949	void	1158	void
950	ev_prepare_stop (struct ev_prepare *w)	1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
951	{	1160	{
952	ev_clear_pending ((W)w);	1161	ev_clear_pending (EV_A_ (W)w);
953	if (ev_is_active (w))	1162	if (ev_is_active (w))
954	return;	1163	return;
955		1164
956	prepares [w->active - 1] = prepares [--preparecnt];	1165	prepares [w->active - 1] = prepares [--preparecnt];
957	ev_stop ((W)w);	1166	ev_stop (EV_A_ (W)w);
958	}	1167	}
959		1168
960	void	1169	void
961	ev_check_start (struct ev_check *w)	1170	ev_check_start (EV_P_ struct ev_check *w)
962	{	1171	{
963	if (ev_is_active (w))	1172	if (ev_is_active (w))
964	return;	1173	return;
965		1174
966	ev_start ((W)w, ++checkcnt);	1175	ev_start (EV_A_ (W)w, ++checkcnt);
967	array_needsize (checks, checkmax, checkcnt, );	1176	array_needsize (checks, checkmax, checkcnt, );
968	checks [checkcnt - 1] = w;	1177	checks [checkcnt - 1] = w;
969	}	1178	}
970		1179
971	void	1180	void
972	ev_check_stop (struct ev_check *w)	1181	ev_check_stop (EV_P_ struct ev_check *w)
973	{	1182	{
974	ev_clear_pending ((W)w);	1183	ev_clear_pending (EV_A_ (W)w);
975	if (ev_is_active (w))	1184	if (ev_is_active (w))
976	return;	1185	return;
977		1186
978	checks [w->active - 1] = checks [--checkcnt];	1187	checks [w->active - 1] = checks [--checkcnt];
979	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
980	}	1189	}
981		1190
982	void	1191	void
983	ev_child_start (struct ev_child *w)	1192	ev_child_start (EV_P_ struct ev_child *w)
984	{	1193	{
985	if (ev_is_active (w))	1194	if (ev_is_active (w))
986	return;	1195	return;
987		1196
988	ev_start ((W)w, 1);	1197	ev_start (EV_A_ (W)w, 1);
989	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	}	1199	}
991		1200
992	void	1201	void
993	ev_child_stop (struct ev_child *w)	1202	ev_child_stop (EV_P_ struct ev_child *w)
994	{	1203	{
995	ev_clear_pending ((W)w);	1204	ev_clear_pending (EV_A_ (W)w);
996	if (ev_is_active (w))	1205	if (ev_is_active (w))
997	return;	1206	return;
998		1207
999	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1000	ev_stop ((W)w);	1209	ev_stop (EV_A_ (W)w);
1001	}	1210	}
1002		1211
1003	/*****************************************************************************/	1212	/*****************************************************************************/
1004		1213
1005	struct ev_once	1214	struct ev_once
…		…
1009	void (cb)(int revents, void arg);	1218	void (cb)(int revents, void arg);
1010	void *arg;	1219	void *arg;
1011	};	1220	};
1012		1221
1013	static void	1222	static void
1014	once_cb (struct ev_once *once, int revents)	1223	once_cb (EV_P_ struct ev_once *once, int revents)
1015	{	1224	{
1016	void (cb)(int revents, void arg) = once->cb;	1225	void (cb)(int revents, void arg) = once->cb;
1017	void *arg = once->arg;	1226	void *arg = once->arg;
1018		1227
1019	ev_io_stop (&once->io);	1228	ev_io_stop (EV_A_ &once->io);
1020	ev_timer_stop (&once->to);	1229	ev_timer_stop (EV_A_ &once->to);
1021	free (once);	1230	free (once);
1022		1231
1023	cb (revents, arg);	1232	cb (revents, arg);
1024	}	1233	}
1025		1234
1026	static void	1235	static void
1027	once_cb_io (struct ev_io *w, int revents)	1236	once_cb_io (EV_P_ struct ev_io *w, int revents)
1028	{	1237	{
1029	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1238	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1030	}	1239	}
1031		1240
1032	static void	1241	static void
1033	once_cb_to (struct ev_timer *w, int revents)	1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1034	{	1243	{
1035	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1244	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1036	}	1245	}
1037		1246
1038	void	1247	void
1039	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1040	{	1249	{
1041	struct ev_once *once = malloc (sizeof (struct ev_once));	1250	struct ev_once *once = malloc (sizeof (struct ev_once));
1042		1251
1043	if (!once)	1252	if (!once)
1044	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1049		1258
1050	ev_watcher_init (&once->io, once_cb_io);	1259	ev_watcher_init (&once->io, once_cb_io);
1051	if (fd >= 0)	1260	if (fd >= 0)
1052	{	1261	{
1053	ev_io_set (&once->io, fd, events);	1262	ev_io_set (&once->io, fd, events);
1054	ev_io_start (&once->io);	1263	ev_io_start (EV_A_ &once->io);
1055	}	1264	}
1056		1265
1057	ev_watcher_init (&once->to, once_cb_to);	1266	ev_watcher_init (&once->to, once_cb_to);
1058	if (timeout >= 0.)	1267	if (timeout >= 0.)
1059	{	1268	{
1060	ev_timer_set (&once->to, timeout, 0.);	1269	ev_timer_set (&once->to, timeout, 0.);
1061	ev_timer_start (&once->to);	1270	ev_timer_start (EV_A_ &once->to);
1062	}	1271	}
1063	}	1272	}
1064	}	1273	}
1065		1274
1066	/*****************************************************************************/	1275	/*****************************************************************************/

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs. Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC