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

Comparing libev/ev.c (file contents):
Revision 1.37 by root, Thu Nov 1 13:33:12 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	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
53	#endif	57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		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
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		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	/**/
54		80
55	#ifndef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	82	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	83	# define EV_USE_MONOTONIC 0
58	#endif	84	#endif
59		85
60	#ifndef EV_USE_SELECT
61	# define EV_USE_SELECT 1
62	#endif
63
64	#ifndef EV_USE_EPOLL
65	# define EV_USE_EPOLL 0
66	#endif
67
68	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
70	#endif	89	#endif
71	#ifndef EV_USE_REALTIME	90
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
73	#endif
74		92
75	#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) */
76	#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) */
77	#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 */
78	#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 */
79		97
80	#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)
81		113
82	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
85		117
86	static ev_tstamp now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
87	ev_tstamp ev_now;
88	int ev_method;
89
90	static int have_monotonic; /* runtime */
91
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
93	static void (*method_modify)(int fd, int oev, int nev);
94	static void (*method_poll)(ev_tstamp timeout);
95		119
96	/*****************************************************************************/	120	/*****************************************************************************/
97		121
98	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
99	ev_time (void)	156	ev_time (void)
100	{	157	{
101	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
102	struct timespec ts;	159	struct timespec ts;
103	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
107	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	166	#endif
110	}	167	}
111		168
112	static ev_tstamp	169	inline ev_tstamp
113	get_clock (void)	170	get_clock (void)
114	{	171	{
115	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
116	if (have_monotonic)	173	if (expect_true (have_monotonic))
117	{	174	{
118	struct timespec ts;	175	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	176	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	178	}
122	#endif	179	#endif
123		180
124	return ev_time ();	181	return ev_time ();
125	}	182	}
126		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
		188	}
		189
127	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
128		191
129	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
130	if ((cnt) > cur) \	193	if (expect_false ((cnt) > cur)) \
131	{ \	194	{ \
132	int newcnt = cur; \	195	int newcnt = cur; \
133	do \	196	do \
134	{ \	197	{ \
135	newcnt = array_roundsize (base, newcnt << 1); \	198	newcnt = array_roundsize (base, newcnt << 1); \
…		…
141	cur = newcnt; \	204	cur = newcnt; \
142	}	205	}
143		206
144	/*****************************************************************************/	207	/*****************************************************************************/
145		208
146	typedef struct
147	{
148	struct ev_io *head;
149	unsigned char events;
150	unsigned char reify;
151	} ANFD;
152
153	static ANFD *anfds;
154	static int anfdmax;
155
156	static void	209	static void
157	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
158	{	211	{
159	while (count--)	212	while (count--)
160	{	213	{
…		…
164		217
165	++base;	218	++base;
166	}	219	}
167	}	220	}
168		221
169	typedef struct
170	{
171	W w;
172	int events;
173	} ANPENDING;
174
175	static ANPENDING *pendings;
176	static int pendingmax, pendingcnt;
177
178	static void	222	static void
179	event (W w, int events)	223	event (EV_P_ W w, int events)
180	{	224	{
181	if (w->pending)	225	if (w->pending)
182	{	226	{
183	pendings [w->pending - 1].events \|= events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
184	return;	228	return;
185	}	229	}
186		230
187	w->pending = ++pendingcnt;	231	w->pending = ++pendingcnt [ABSPRI (w)];
188	array_needsize (pendings, pendingmax, pendingcnt, );	232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
189	pendings [pendingcnt - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
190	pendings [pendingcnt - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
191	}	235	}
192		236
193	static void	237	static void
194	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
195	{	239	{
196	int i;	240	int i;
197		241
198	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);	243	event (EV_A_ events [i], type);
200	}	244	}
201		245
202	static void	246	static void
203	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
204	{	248	{
205	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	250	struct ev_io *w;
207		251
208	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
209	{	253	{
210	int ev = w->events & events;	254	int ev = w->events & events;
211		255
212	if (ev)	256	if (ev)
213	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
214	}	258	}
215	}	259	}
216		260
217	/*****************************************************************************/	261	/*****************************************************************************/
218		262
219	static int *fdchanges;
220	static int fdchangemax, fdchangecnt;
221
222	static void	263	static void
223	fd_reify (void)	264	fd_reify (EV_P)
224	{	265	{
225	int i;	266	int i;
226		267
227	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
228	{	269	{
…		…
230	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	272	struct ev_io *w;
232		273
233	int events = 0;	274	int events = 0;
234		275
235	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
236	events \|= w->events;	277	events \|= w->events;
237		278
238	anfd->reify = 0;	279	anfd->reify = 0;
239		280
240	if (anfd->events != events)	281	if (anfd->events != events)
241	{	282	{
242	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	284	anfd->events = events;
244	}	285	}
245	}	286	}
246		287
247	fdchangecnt = 0;	288	fdchangecnt = 0;
248	}	289	}
249		290
250	static void	291	static void
251	fd_change (int fd)	292	fd_change (EV_P_ int fd)
252	{	293	{
253	if (anfds [fd].reify \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
254	return;	295	return;
255		296
256	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
258	++fdchangecnt;	299	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
260	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
261	}	302	}
262		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
263	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
264	static void	317	static void
265	fd_recheck (void)	318	fd_ebadf (EV_P)
266	{	319	{
267	int fd;	320	int fd;
268		321
269	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	323	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
272	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)
273	{	336	{
274	ev_io_stop (anfds [fd].head);	337	close (fd);
275	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	338	fd_kill (EV_A_ fd);
		339	return;
276	}	340	}
277	}	341	}
278		342
279	/*****************************************************************************/	343	/*****************************************************************************/
280		344
281	static struct ev_timer **timers;
282	static int timermax, timercnt;
283
284	static struct ev_periodic **periodics;
285	static int periodicmax, periodiccnt;
286
287	static void	345	static void
288	upheap (WT *timers, int k)	346	upheap (WT *heap, int k)
289	{	347	{
290	WT w = timers [k];	348	WT w = heap [k];
291		349
292	while (k && timers [k >> 1]->at > w->at)	350	while (k && heap [k >> 1]->at > w->at)
293	{	351	{
294	timers [k] = timers [k >> 1];	352	heap [k] = heap [k >> 1];
295	timers [k]->active = k + 1;	353	heap [k]->active = k + 1;
296	k >>= 1;	354	k >>= 1;
297	}	355	}
298		356
299	timers [k] = w;	357	heap [k] = w;
300	timers [k]->active = k + 1;	358	heap [k]->active = k + 1;
301		359
302	}	360	}
303		361
304	static void	362	static void
305	downheap (WT *timers, int N, int k)	363	downheap (WT *heap, int N, int k)
306	{	364	{
307	WT w = timers [k];	365	WT w = heap [k];
308		366
309	while (k < (N >> 1))	367	while (k < (N >> 1))
310	{	368	{
311	int j = k << 1;	369	int j = k << 1;
312		370
313	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
314	++j;	372	++j;
315		373
316	if (w->at <= timers [j]->at)	374	if (w->at <= heap [j]->at)
317	break;	375	break;
318		376
319	timers [k] = timers [j];	377	heap [k] = heap [j];
320	timers [k]->active = k + 1;	378	heap [k]->active = k + 1;
321	k = j;	379	k = j;
322	}	380	}
323		381
324	timers [k] = w;	382	heap [k] = w;
325	timers [k]->active = k + 1;	383	heap [k]->active = k + 1;
326	}	384	}
327		385
328	/*****************************************************************************/	386	/*****************************************************************************/
329		387
330	typedef struct	388	typedef struct
331	{	389	{
332	struct ev_signal *head;	390	struct ev_watcher_list *head;
333	sig_atomic_t volatile gotsig;	391	sig_atomic_t volatile gotsig;
334	} ANSIG;	392	} ANSIG;
335		393
336	static ANSIG *signals;	394	static ANSIG *signals;
337	static int signalmax;	395	static int signalmax;
338		396
339	static int sigpipe [2];	397	static int sigpipe [2];
340	static sig_atomic_t volatile gotsig;	398	static sig_atomic_t volatile gotsig;
341	static struct ev_io sigev;
342		399
343	static void	400	static void
344	signals_init (ANSIG *base, int count)	401	signals_init (ANSIG *base, int count)
345	{	402	{
346	while (count--)	403	while (count--)
…		…
357	{	414	{
358	signals [signum - 1].gotsig = 1;	415	signals [signum - 1].gotsig = 1;
359		416
360	if (!gotsig)	417	if (!gotsig)
361	{	418	{
		419	int old_errno = errno;
362	gotsig = 1;	420	gotsig = 1;
363	write (sigpipe [1], &signum, 1);	421	write (sigpipe [1], &signum, 1);
		422	errno = old_errno;
364	}	423	}
365	}	424	}
366		425
367	static void	426	static void
368	sigcb (struct ev_io *iow, int revents)	427	sigcb (EV_P_ struct ev_io *iow, int revents)
369	{	428	{
370	struct ev_signal *w;	429	struct ev_watcher_list *w;
371	int sig;	430	int signum;
372		431
373	read (sigpipe [0], &revents, 1);	432	read (sigpipe [0], &revents, 1);
374	gotsig = 0;	433	gotsig = 0;
375		434
376	for (sig = signalmax; sig--; )	435	for (signum = signalmax; signum--; )
377	if (signals [sig].gotsig)	436	if (signals [signum].gotsig)
378	{	437	{
379	signals [sig].gotsig = 0;	438	signals [signum].gotsig = 0;
380		439
381	for (w = signals [sig].head; w; w = w->next)	440	for (w = signals [signum].head; w; w = w->next)
382	event ((W)w, EV_SIGNAL);	441	event (EV_A_ (W)w, EV_SIGNAL);
383	}	442	}
384	}	443	}
385		444
386	static void	445	static void
387	siginit (void)	446	siginit (EV_P)
388	{	447	{
		448	#ifndef WIN32
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391		451
392	/* rather than sort out wether we really need nb, set it */	452	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		455	#endif
395		456
396	ev_io_set (&sigev, sigpipe [0], EV_READ);	457	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);	458	ev_io_start (EV_A_ &sigev);
		459	ev_unref (EV_A); /* child watcher should not keep loop alive */
398	}	460	}
399		461
400	/*****************************************************************************/	462	/*****************************************************************************/
401		463
402	static struct ev_idle **idles;	464	#ifndef WIN32
403	static int idlemax, idlecnt;
404
405	static struct ev_prepare **prepares;
406	static int preparemax, preparecnt;
407
408	static struct ev_check **checks;
409	static int checkmax, checkcnt;
410
411	/*****************************************************************************/
412
413	static struct ev_child *childs [PID_HASHSIZE];
414	static struct ev_signal childev;
415		465
416	#ifndef WCONTINUED	466	#ifndef WCONTINUED
417	# define WCONTINUED 0	467	# define WCONTINUED 0
418	#endif	468	#endif
419		469
420	static void	470	static void
421	childcb (struct ev_signal *sw, int revents)	471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
422	{	472	{
423	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	{
424	int pid, status;	488	int pid, status;
425		489
426	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	491	{
428	if (w->pid == pid \|\| w->pid == -1)	492	/* make sure we are called again until all childs have been reaped */
429	{	493	event (EV_A_ (W)sw, EV_SIGNAL);
430	w->status = status;	494
431	event ((W)w, EV_CHILD);	495	child_reap (EV_A_ sw, pid, pid, status);
432	}	496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		497	}
433	}	498	}
		499
		500	#endif
434		501
435	/*****************************************************************************/	502	/*****************************************************************************/
436		503
		504	#if EV_USE_KQUEUE
		505	# include "ev_kqueue.c"
		506	#endif
437	#if EV_USE_EPOLL	507	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	508	# include "ev_epoll.c"
439	#endif	509	#endif
		510	#if EV_USEV_POLL
		511	# include "ev_poll.c"
		512	#endif
440	#if EV_USE_SELECT	513	#if EV_USE_SELECT
441	# include "ev_select.c"	514	# include "ev_select.c"
442	#endif	515	#endif
443		516
444	int	517	int
…		…
451	ev_version_minor (void)	524	ev_version_minor (void)
452	{	525	{
453	return EV_VERSION_MINOR;	526	return EV_VERSION_MINOR;
454	}	527	}
455		528
456	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)
457	{	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	{
458	if (!ev_method)	550	if (!method)
459	{	551	{
460	#if EV_USE_MONOTONIC	552	#if EV_USE_MONOTONIC
461	{	553	{
462	struct timespec ts;	554	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	556	have_monotonic = 1;
465	}	557	}
466	#endif	558	#endif
467		559
468	ev_now = ev_time ();	560	rt_now = ev_time ();
469	now = get_clock ();	561	mn_now = get_clock ();
		562	now_floor = mn_now;
470	diff = ev_now - now;	563	rtmn_diff = rt_now - mn_now;
471		564
472	if (pipe (sigpipe))	565	if (pipe (sigpipe))
473	return 0;	566	return 0;
474		567
		568	if (methods == EVMETHOD_AUTO)
		569	if (!enable_secure () && getenv ("LIBmethodS"))
		570	methods = atoi (getenv ("LIBmethodS"));
		571	else
475	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
476	#if EV_USE_EPOLL	578	#if EV_USE_EPOLL
477	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);
478	#endif	583	#endif
479	#if EV_USE_SELECT	584	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
481	#endif	586	#endif
482		587
483	if (ev_method)	588	if (method)
484	{	589	{
485	ev_watcher_init (&sigev, sigcb);	590	ev_watcher_init (&sigev, sigcb);
		591	ev_set_priority (&sigev, EV_MAXPRI);
486	siginit ();	592	siginit (EV_A);
487		593
		594	#ifndef WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	595	ev_signal_init (&childev, childcb, SIGCHLD);
		596	ev_set_priority (&childev, EV_MAXPRI);
489	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
490	}	600	}
491	}	601	}
492		602
493	return ev_method;	603	return method;
494	}	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
495		634
496	/*****************************************************************************/	635	/*****************************************************************************/
497		636
498	void	637	void
499	ev_fork_prepare (void)	638	ev_fork_prepare (void)
…		…
508	}	647	}
509		648
510	void	649	void
511	ev_fork_child (void)	650	ev_fork_child (void)
512	{	651	{
		652	/TODO/
		653	#if !EV_MULTIPLICITY
513	#if EV_USE_EPOLL	654	#if EV_USE_EPOLL
514	if (ev_method == EVMETHOD_EPOLL)	655	if (method == EVMETHOD_EPOLL)
515	epoll_postfork_child ();	656	epoll_postfork_child (EV_A);
516	#endif	657	#endif
517		658
518	ev_io_stop (&sigev);	659	ev_io_stop (EV_A_ &sigev);
519	close (sigpipe [0]);	660	close (sigpipe [0]);
520	close (sigpipe [1]);	661	close (sigpipe [1]);
521	pipe (sigpipe);	662	pipe (sigpipe);
522	siginit ();	663	siginit (EV_A);
		664	#endif
523	}	665	}
524		666
525	/*****************************************************************************/	667	/*****************************************************************************/
526		668
527	static void	669	static void
528	call_pending (void)	670	call_pending (EV_P)
529	{	671	{
		672	int pri;
		673
		674	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	675	while (pendingcnt [pri])
531	{	676	{
532	ANPENDING *p = pendings + --pendingcnt;	677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		678
534	if (p->w)	679	if (p->w)
535	{	680	{
536	p->w->pending = 0;	681	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	682	p->w->cb (EV_A_ p->w, p->events);
538	}	683	}
539	}	684	}
540	}	685	}
541		686
542	static void	687	static void
543	timers_reify (void)	688	timers_reify (EV_P)
544	{	689	{
545	while (timercnt && timers [0]->at <= now)	690	while (timercnt && timers [0]->at <= mn_now)
546	{	691	{
547	struct ev_timer *w = timers [0];	692	struct ev_timer *w = timers [0];
548		693
549	/* first reschedule or stop timer */	694	/* first reschedule or stop timer */
550	if (w->repeat)	695	if (w->repeat)
551	{	696	{
552	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.));
553	w->at = now + w->repeat;	698	w->at = mn_now + w->repeat;
554	downheap ((WT *)timers, timercnt, 0);	699	downheap ((WT *)timers, timercnt, 0);
555	}	700	}
556	else	701	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		703
559	event ((W)w, EV_TIMEOUT);	704	event (EV_A_ (W)w, EV_TIMEOUT);
560	}	705	}
561	}	706	}
562		707
563	static void	708	static void
564	periodics_reify (void)	709	periodics_reify (EV_P)
565	{	710	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	711	while (periodiccnt && periodics [0]->at <= rt_now)
567	{	712	{
568	struct ev_periodic *w = periodics [0];	713	struct ev_periodic *w = periodics [0];
569		714
570	/* first reschedule or stop timer */	715	/* first reschedule or stop timer */
571	if (w->interval)	716	if (w->interval)
572	{	717	{
573	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;
574	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));
575	downheap ((WT *)periodics, periodiccnt, 0);	720	downheap ((WT *)periodics, periodiccnt, 0);
576	}	721	}
577	else	722	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		724
580	event ((W)w, EV_PERIODIC);	725	event (EV_A_ (W)w, EV_PERIODIC);
581	}	726	}
582	}	727	}
583		728
584	static void	729	static void
585	periodics_reschedule (ev_tstamp diff)	730	periodics_reschedule (EV_P)
586	{	731	{
587	int i;	732	int i;
588		733
589	/* adjust periodics after time jump */	734	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	735	for (i = 0; i < periodiccnt; ++i)
591	{	736	{
592	struct ev_periodic *w = periodics [i];	737	struct ev_periodic *w = periodics [i];
593		738
594	if (w->interval)	739	if (w->interval)
595	{	740	{
596	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;
597		742
598	if (fabs (diff) >= 1e-4)	743	if (fabs (diff) >= 1e-4)
599	{	744	{
600	ev_periodic_stop (w);	745	ev_periodic_stop (EV_A_ w);
601	ev_periodic_start (w);	746	ev_periodic_start (EV_A_ w);
602		747
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */	748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
604	}	749	}
605	}	750	}
606	}	751	}
607	}	752	}
608		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
609	static void	772	static void
610	time_update (void)	773	time_update (EV_P)
611	{	774	{
612	int i;	775	int i;
613		776
614	ev_now = ev_time ();	777	#if EV_USE_MONOTONIC
615
616	if (have_monotonic)	778	if (expect_true (have_monotonic))
617	{	779	{
618	ev_tstamp odiff = diff;	780	if (time_update_monotonic (EV_A))
619
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
621	{	781	{
622	now = get_clock ();	782	ev_tstamp odiff = rtmn_diff;
		783
		784	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		785	{
623	diff = ev_now - now;	786	rtmn_diff = rt_now - mn_now;
624		787
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)	788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
626	return; /* all is well */	789	return; /* all is well */
627		790
628	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) */
629	}	799	}
630
631	periodics_reschedule (diff - odiff);
632	/* no timer adjustment, as the monotonic clock doesn't jump */
633	}	800	}
634	else	801	else
		802	#endif
635	{	803	{
636	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))
637	{	807	{
638	periodics_reschedule (ev_now - now);	808	periodics_reschedule (EV_A);
639		809
640	/* 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 */
641	for (i = 0; i < timercnt; ++i)	811	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	812	timers [i]->at += rt_now - mn_now;
643	}	813	}
644		814
645	now = ev_now;	815	mn_now = rt_now;
646	}	816	}
647	}	817	}
648		818
649	int ev_loop_done;	819	void
		820	ev_ref (EV_P)
		821	{
		822	++activecnt;
		823	}
650		824
		825	void
		826	ev_unref (EV_P)
		827	{
		828	--activecnt;
		829	}
		830
		831	static int loop_done;
		832
		833	void
651	void ev_loop (int flags)	834	ev_loop (EV_P_ int flags)
652	{	835	{
653	double block;	836	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
655		838
656	do	839	do
657	{	840	{
658	/* queue check watchers (and execute them) */	841	/* queue check watchers (and execute them) */
659	if (preparecnt)	842	if (expect_false (preparecnt))
660	{	843	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	845	call_pending (EV_A);
663	}	846	}
664		847
665	/* update fd-related kernel structures */	848	/* update fd-related kernel structures */
666	fd_reify ();	849	fd_reify (EV_A);
667		850
668	/* calculate blocking time */	851	/* calculate blocking time */
669		852
670	/* 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
671	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	{
672	ev_now = ev_time ();	861	rt_now = ev_time ();
		862	mn_now = rt_now;
		863	}
673		864
674	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
675	block = 0.;	866	block = 0.;
676	else	867	else
677	{	868	{
678	block = MAX_BLOCKTIME;	869	block = MAX_BLOCKTIME;
679		870
680	if (timercnt)	871	if (timercnt)
681	{	872	{
682	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;
683	if (block > to) block = to;	874	if (block > to) block = to;
684	}	875	}
685		876
686	if (periodiccnt)	877	if (periodiccnt)
687	{	878	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
689	if (block > to) block = to;	880	if (block > to) block = to;
690	}	881	}
691		882
692	if (block < 0.) block = 0.;	883	if (block < 0.) block = 0.;
693	}	884	}
694		885
695	method_poll (block);	886	method_poll (EV_A_ block);
696		887
697	/* update ev_now, do magic */	888	/* update rt_now, do magic */
698	time_update ();	889	time_update (EV_A);
699		890
700	/* queue pending timers and reschedule them */	891	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	892	timers_reify (EV_A); /* relative timers called last */
702	periodics_reify (); /* absolute timers called first */	893	periodics_reify (EV_A); /* absolute timers called first */
703		894
704	/* queue idle watchers unless io or timers are pending */	895	/* queue idle watchers unless io or timers are pending */
705	if (!pendingcnt)	896	if (!pendingcnt)
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
707		898
708	/* queue check watchers, to be executed first */	899	/* queue check watchers, to be executed first */
709	if (checkcnt)	900	if (checkcnt)
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		902
712	call_pending ();	903	call_pending (EV_A);
713	}	904	}
714	while (!ev_loop_done);	905	while (activecnt && !loop_done);
715		906
716	if (ev_loop_done != 2)	907	if (loop_done != 2)
717	ev_loop_done = 0;	908	loop_done = 0;
		909	}
		910
		911	void
		912	ev_unloop (EV_P_ int how)
		913	{
		914	loop_done = how;
718	}	915	}
719		916
720	/*****************************************************************************/	917	/*****************************************************************************/
721		918
722	static void	919	inline void
723	wlist_add (WL *head, WL elem)	920	wlist_add (WL *head, WL elem)
724	{	921	{
725	elem->next = *head;	922	elem->next = *head;
726	*head = elem;	923	*head = elem;
727	}	924	}
728		925
729	static void	926	inline void
730	wlist_del (WL *head, WL elem)	927	wlist_del (WL *head, WL elem)
731	{	928	{
732	while (*head)	929	while (*head)
733	{	930	{
734	if (*head == elem)	931	if (*head == elem)
…		…
739		936
740	head = &(*head)->next;	937	head = &(*head)->next;
741	}	938	}
742	}	939	}
743		940
744	static void	941	inline void
745	ev_clear_pending (W w)	942	ev_clear_pending (EV_P_ W w)
746	{	943	{
747	if (w->pending)	944	if (w->pending)
748	{	945	{
749	pendings [w->pending - 1].w = 0;	946	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	947	w->pending = 0;
751	}	948	}
752	}	949	}
753		950
754	static void	951	inline void
755	ev_start (W w, int active)	952	ev_start (EV_P_ W w, int active)
756	{	953	{
		954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		956
757	w->active = active;	957	w->active = active;
		958	ev_ref (EV_A);
758	}	959	}
759		960
760	static void	961	inline void
761	ev_stop (W w)	962	ev_stop (EV_P_ W w)
762	{	963	{
		964	ev_unref (EV_A);
763	w->active = 0;	965	w->active = 0;
764	}	966	}
765		967
766	/*****************************************************************************/	968	/*****************************************************************************/
767		969
768	void	970	void
769	ev_io_start (struct ev_io *w)	971	ev_io_start (EV_P_ struct ev_io *w)
770	{	972	{
771	int fd = w->fd;	973	int fd = w->fd;
772		974
773	if (ev_is_active (w))	975	if (ev_is_active (w))
774	return;	976	return;
775		977
776	assert (("ev_io_start called with negative fd", fd >= 0));	978	assert (("ev_io_start called with negative fd", fd >= 0));
777		979
778	ev_start ((W)w, 1);	980	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	982	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		983
782	fd_change (fd);	984	fd_change (EV_A_ fd);
783	}	985	}
784		986
785	void	987	void
786	ev_io_stop (struct ev_io *w)	988	ev_io_stop (EV_P_ struct ev_io *w)
787	{	989	{
788	ev_clear_pending ((W)w);	990	ev_clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	991	if (!ev_is_active (w))
790	return;	992	return;
791		993
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	995	ev_stop (EV_A_ (W)w);
794		996
795	fd_change (w->fd);	997	fd_change (EV_A_ w->fd);
796	}	998	}
797		999
798	void	1000	void
799	ev_timer_start (struct ev_timer *w)	1001	ev_timer_start (EV_P_ struct ev_timer *w)
800	{	1002	{
801	if (ev_is_active (w))	1003	if (ev_is_active (w))
802	return;	1004	return;
803		1005
804	w->at += now;	1006	w->at += mn_now;
805		1007
806	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.));
807		1009
808	ev_start ((W)w, ++timercnt);	1010	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	1011	array_needsize (timers, timermax, timercnt, );
810	timers [timercnt - 1] = w;	1012	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	1013	upheap ((WT *)timers, timercnt - 1);
812	}	1014	}
813		1015
814	void	1016	void
815	ev_timer_stop (struct ev_timer *w)	1017	ev_timer_stop (EV_P_ struct ev_timer *w)
816	{	1018	{
817	ev_clear_pending ((W)w);	1019	ev_clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	1020	if (!ev_is_active (w))
819	return;	1021	return;
820		1022
821	if (w->active < timercnt--)	1023	if (w->active < timercnt--)
822	{	1024	{
…		…
824	downheap ((WT *)timers, timercnt, w->active - 1);	1026	downheap ((WT *)timers, timercnt, w->active - 1);
825	}	1027	}
826		1028
827	w->at = w->repeat;	1029	w->at = w->repeat;
828		1030
829	ev_stop ((W)w);	1031	ev_stop (EV_A_ (W)w);
830	}	1032	}
831		1033
832	void	1034	void
833	ev_timer_again (struct ev_timer *w)	1035	ev_timer_again (EV_P_ struct ev_timer *w)
834	{	1036	{
835	if (ev_is_active (w))	1037	if (ev_is_active (w))
836	{	1038	{
837	if (w->repeat)	1039	if (w->repeat)
838	{	1040	{
839	w->at = now + w->repeat;	1041	w->at = mn_now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1042	downheap ((WT *)timers, timercnt, w->active - 1);
841	}	1043	}
842	else	1044	else
843	ev_timer_stop (w);	1045	ev_timer_stop (EV_A_ w);
844	}	1046	}
845	else if (w->repeat)	1047	else if (w->repeat)
846	ev_timer_start (w);	1048	ev_timer_start (EV_A_ w);
847	}	1049	}
848		1050
849	void	1051	void
850	ev_periodic_start (struct ev_periodic *w)	1052	ev_periodic_start (EV_P_ struct ev_periodic *w)
851	{	1053	{
852	if (ev_is_active (w))	1054	if (ev_is_active (w))
853	return;	1055	return;
854		1056
855	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.));
856		1058
857	/* 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 */
858	if (w->interval)	1060	if (w->interval)
859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
860		1062
861	ev_start ((W)w, ++periodiccnt);	1063	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1064	array_needsize (periodics, periodicmax, periodiccnt, );
863	periodics [periodiccnt - 1] = w;	1065	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1066	upheap ((WT *)periodics, periodiccnt - 1);
865	}	1067	}
866		1068
867	void	1069	void
868	ev_periodic_stop (struct ev_periodic *w)	1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)
869	{	1071	{
870	ev_clear_pending ((W)w);	1072	ev_clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1073	if (!ev_is_active (w))
872	return;	1074	return;
873		1075
874	if (w->active < periodiccnt--)	1076	if (w->active < periodiccnt--)
875	{	1077	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1078	periodics [w->active - 1] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);
878	}	1080	}
879		1081
880	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
881	}	1083	}
882		1084
		1085	#ifndef SA_RESTART
		1086	# define SA_RESTART 0
		1087	#endif
		1088
883	void	1089	void
884	ev_signal_start (struct ev_signal *w)	1090	ev_signal_start (EV_P_ struct ev_signal *w)
885	{	1091	{
886	if (ev_is_active (w))	1092	if (ev_is_active (w))
887	return;	1093	return;
888		1094
889	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));
890		1096
891	ev_start ((W)w, 1);	1097	ev_start (EV_A_ (W)w, 1);
892	array_needsize (signals, signalmax, w->signum, signals_init);	1098	array_needsize (signals, signalmax, w->signum, signals_init);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1100
895	if (!w->next)	1101	if (!w->next)
896	{	1102	{
897	struct sigaction sa;	1103	struct sigaction sa;
898	sa.sa_handler = sighandler;	1104	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1105	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1107	sigaction (w->signum, &sa, 0);
902	}	1108	}
903	}	1109	}
904		1110
905	void	1111	void
906	ev_signal_stop (struct ev_signal *w)	1112	ev_signal_stop (EV_P_ struct ev_signal *w)
907	{	1113	{
908	ev_clear_pending ((W)w);	1114	ev_clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1115	if (!ev_is_active (w))
910	return;	1116	return;
911		1117
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1119	ev_stop (EV_A_ (W)w);
914		1120
915	if (!signals [w->signum - 1].head)	1121	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1122	signal (w->signum, SIG_DFL);
917	}	1123	}
918		1124
919	void	1125	void
920	ev_idle_start (struct ev_idle *w)	1126	ev_idle_start (EV_P_ struct ev_idle *w)
921	{	1127	{
922	if (ev_is_active (w))	1128	if (ev_is_active (w))
923	return;	1129	return;
924		1130
925	ev_start ((W)w, ++idlecnt);	1131	ev_start (EV_A_ (W)w, ++idlecnt);
926	array_needsize (idles, idlemax, idlecnt, );	1132	array_needsize (idles, idlemax, idlecnt, );
927	idles [idlecnt - 1] = w;	1133	idles [idlecnt - 1] = w;
928	}	1134	}
929		1135
930	void	1136	void
931	ev_idle_stop (struct ev_idle *w)	1137	ev_idle_stop (EV_P_ struct ev_idle *w)
932	{	1138	{
933	ev_clear_pending ((W)w);	1139	ev_clear_pending (EV_A_ (W)w);
934	if (ev_is_active (w))	1140	if (ev_is_active (w))
935	return;	1141	return;
936		1142
937	idles [w->active - 1] = idles [--idlecnt];	1143	idles [w->active - 1] = idles [--idlecnt];
938	ev_stop ((W)w);	1144	ev_stop (EV_A_ (W)w);
939	}	1145	}
940		1146
941	void	1147	void
942	ev_prepare_start (struct ev_prepare *w)	1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
943	{	1149	{
944	if (ev_is_active (w))	1150	if (ev_is_active (w))
945	return;	1151	return;
946		1152
947	ev_start ((W)w, ++preparecnt);	1153	ev_start (EV_A_ (W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );	1154	array_needsize (prepares, preparemax, preparecnt, );
949	prepares [preparecnt - 1] = w;	1155	prepares [preparecnt - 1] = w;
950	}	1156	}
951		1157
952	void	1158	void
953	ev_prepare_stop (struct ev_prepare *w)	1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
954	{	1160	{
955	ev_clear_pending ((W)w);	1161	ev_clear_pending (EV_A_ (W)w);
956	if (ev_is_active (w))	1162	if (ev_is_active (w))
957	return;	1163	return;
958		1164
959	prepares [w->active - 1] = prepares [--preparecnt];	1165	prepares [w->active - 1] = prepares [--preparecnt];
960	ev_stop ((W)w);	1166	ev_stop (EV_A_ (W)w);
961	}	1167	}
962		1168
963	void	1169	void
964	ev_check_start (struct ev_check *w)	1170	ev_check_start (EV_P_ struct ev_check *w)
965	{	1171	{
966	if (ev_is_active (w))	1172	if (ev_is_active (w))
967	return;	1173	return;
968		1174
969	ev_start ((W)w, ++checkcnt);	1175	ev_start (EV_A_ (W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );	1176	array_needsize (checks, checkmax, checkcnt, );
971	checks [checkcnt - 1] = w;	1177	checks [checkcnt - 1] = w;
972	}	1178	}
973		1179
974	void	1180	void
975	ev_check_stop (struct ev_check *w)	1181	ev_check_stop (EV_P_ struct ev_check *w)
976	{	1182	{
977	ev_clear_pending ((W)w);	1183	ev_clear_pending (EV_A_ (W)w);
978	if (ev_is_active (w))	1184	if (ev_is_active (w))
979	return;	1185	return;
980		1186
981	checks [w->active - 1] = checks [--checkcnt];	1187	checks [w->active - 1] = checks [--checkcnt];
982	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
983	}	1189	}
984		1190
985	void	1191	void
986	ev_child_start (struct ev_child *w)	1192	ev_child_start (EV_P_ struct ev_child *w)
987	{	1193	{
988	if (ev_is_active (w))	1194	if (ev_is_active (w))
989	return;	1195	return;
990		1196
991	ev_start ((W)w, 1);	1197	ev_start (EV_A_ (W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}	1199	}
994		1200
995	void	1201	void
996	ev_child_stop (struct ev_child *w)	1202	ev_child_stop (EV_P_ struct ev_child *w)
997	{	1203	{
998	ev_clear_pending ((W)w);	1204	ev_clear_pending (EV_A_ (W)w);
999	if (ev_is_active (w))	1205	if (ev_is_active (w))
1000	return;	1206	return;
1001		1207
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1003	ev_stop ((W)w);	1209	ev_stop (EV_A_ (W)w);
1004	}	1210	}
1005		1211
1006	/*****************************************************************************/	1212	/*****************************************************************************/
1007		1213
1008	struct ev_once	1214	struct ev_once
…		…
1012	void (cb)(int revents, void arg);	1218	void (cb)(int revents, void arg);
1013	void *arg;	1219	void *arg;
1014	};	1220	};
1015		1221
1016	static void	1222	static void
1017	once_cb (struct ev_once *once, int revents)	1223	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	1224	{
1019	void (cb)(int revents, void arg) = once->cb;	1225	void (cb)(int revents, void arg) = once->cb;
1020	void *arg = once->arg;	1226	void *arg = once->arg;
1021		1227
1022	ev_io_stop (&once->io);	1228	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	1229	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	1230	free (once);
1025		1231
1026	cb (revents, arg);	1232	cb (revents, arg);
1027	}	1233	}
1028		1234
1029	static void	1235	static void
1030	once_cb_io (struct ev_io *w, int revents)	1236	once_cb_io (EV_P_ struct ev_io *w, int revents)
1031	{	1237	{
1032	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);
1033	}	1239	}
1034		1240
1035	static void	1241	static void
1036	once_cb_to (struct ev_timer *w, int revents)	1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1037	{	1243	{
1038	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);
1039	}	1245	}
1040		1246
1041	void	1247	void
1042	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)
1043	{	1249	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	1250	struct ev_once *once = malloc (sizeof (struct ev_once));
1045		1251
1046	if (!once)	1252	if (!once)
1047	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1052		1258
1053	ev_watcher_init (&once->io, once_cb_io);	1259	ev_watcher_init (&once->io, once_cb_io);
1054	if (fd >= 0)	1260	if (fd >= 0)
1055	{	1261	{
1056	ev_io_set (&once->io, fd, events);	1262	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	1263	ev_io_start (EV_A_ &once->io);
1058	}	1264	}
1059		1265
1060	ev_watcher_init (&once->to, once_cb_to);	1266	ev_watcher_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	1267	if (timeout >= 0.)
1062	{	1268	{
1063	ev_timer_set (&once->to, timeout, 0.);	1269	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	1270	ev_timer_start (EV_A_ &once->to);
1065	}	1271	}
1066	}	1272	}
1067	}	1273	}
1068		1274
1069	/*****************************************************************************/	1275	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.37 by root, Thu Nov 1 13:33:12 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 1.37 by root, Thu Nov 1 13:33:12 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC