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Comparing libev/ev.c (file contents):
Revision 1.191 by root, Fri Dec 21 02:40:01 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 2007 UTC

… …
51# ifndef EV_USE_MONOTONIC 51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 52# define EV_USE_MONOTONIC 0
53# endif 53# endif
54# ifndef EV_USE_REALTIME 54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 55# define EV_USE_REALTIME 0
56# endif
57# endif
58
59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
56# endif 64# endif
57# endif 65# endif
58 66
59# ifndef EV_USE_SELECT 67# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
146 154
147#ifndef EV_USE_REALTIME 155#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 156# define EV_USE_REALTIME 0
149#endif 157#endif
150 158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
161#endif
162
151#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
153#endif 165#endif
154 166
155#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
… …
205#endif 217#endif
206 218
207#if !EV_STAT_ENABLE 219#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY 220# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0 221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
210#endif 228#endif
211 229
212#if EV_USE_INOTIFY 230#if EV_USE_INOTIFY
213# include <sys/inotify.h> 231# include <sys/inotify.h>
214#endif 232#endif
… …
262 280
263typedef ev_watcher *W; 281typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
266 284
285#if EV_USE_MONOTONIC
286/* sig_atomic_t is used to avoid per-thread variables or locking but still */
287/* giving it a reasonably high chance of working on typical architetcures */
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
289#endif
268 290
269#ifdef _WIN32 291#ifdef _WIN32
270# include "ev_win32.c" 292# include "ev_win32.c"
271#endif 293#endif
272 294
… …
408{ 430{
409 return ev_rt_now; 431 return ev_rt_now;
410} 432}
411#endif 433#endif
412 434
435void
436ev_sleep (ev_tstamp delay)
437{
438 if (delay > 0.)
439 {
440#if EV_USE_NANOSLEEP
441 struct timespec ts;
442
443 ts.tv_sec = (time_t)delay;
444 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
445
446 nanosleep (&ts, 0);
447#elif defined(_WIN32)
448 Sleep (delay * 1e3);
449#else
450 struct timeval tv;
451
452 tv.tv_sec = (time_t)delay;
453 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
454
455 select (0, 0, 0, 0, &tv);
456#endif
457 }
458}
459
460/*****************************************************************************/
461
413int inline_size 462int inline_size
414array_nextsize (int elem, int cur, int cnt) 463array_nextsize (int elem, int cur, int cnt)
415{ 464{
416 int ncur = cur + 1; 465 int ncur = cur + 1;
417 466
… …
925} 974}
926 975
927unsigned int 976unsigned int
928ev_embeddable_backends (void) 977ev_embeddable_backends (void)
929{ 978{
930 return EVBACKEND_EPOLL 979 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 980
932 | EVBACKEND_PORT; 981 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
982 /* please fix it and tell me how to detect the fix */
983 flags &= ~EVBACKEND_EPOLL;
984
985 return flags;
933} 986}
934 987
935unsigned int 988unsigned int
936ev_backend (EV_P) 989ev_backend (EV_P)
937{ 990{
… …
940 993
941unsigned int 994unsigned int
942ev_loop_count (EV_P) 995ev_loop_count (EV_P)
943{ 996{
944 return loop_count; 997 return loop_count;
998}
999
1000void
1001ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 io_blocktime = interval;
1004}
1005
1006void
1007ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1008{
1009 timeout_blocktime = interval;
945} 1010}
946 1011
947static void noinline 1012static void noinline
948loop_init (EV_P_ unsigned int flags) 1013loop_init (EV_P_ unsigned int flags)
949{ 1014{
… …
959 1024
960 ev_rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
961 mn_now = get_clock (); 1026 mn_now = get_clock ();
962 now_floor = mn_now; 1027 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
1029
1030 io_blocktime = 0.;
1031 timeout_blocktime = 0.;
964 1032
965 /* pid check not overridable via env */ 1033 /* pid check not overridable via env */
966#ifndef _WIN32 1034#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1035 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1036 curpid = getpid ();
… …
1456 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 1525 fd_reify (EV_A);
1458 1526
1459 /* calculate blocking time */ 1527 /* calculate blocking time */
1460 { 1528 {
1461 ev_tstamp block; 1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
1462 1531
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464 block = 0.; /* do not block at all */
1465 else
1466 { 1533 {
1467 /* update time to cancel out callback processing overhead */ 1534 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100); 1535 time_update (EV_A_ 1e100);
1469 1536
1470 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
1471 1538
1472 if (timercnt) 1539 if (timercnt)
1473 { 1540 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1475 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
1476 } 1543 }
1477 1544
1478#if EV_PERIODIC_ENABLE 1545#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 1546 if (periodiccnt)
1480 { 1547 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1548 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1482 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1483 } 1550 }
1484#endif 1551#endif
1485 1552
1486 if (expect_false (block < 0.)) block = 0.; 1553 if (expect_false (waittime < timeout_blocktime))
1554 waittime = timeout_blocktime;
1555
1556 sleeptime = waittime - backend_fudge;
1557
1558 if (expect_true (sleeptime > io_blocktime))
1559 sleeptime = io_blocktime;
1560
1561 if (sleeptime)
1562 {
1563 ev_sleep (sleeptime);
1564 waittime -= sleeptime;
1565 }
1487 } 1566 }
1488 1567
1489 ++loop_count; 1568 ++loop_count;
1490 backend_poll (EV_A_ block); 1569 backend_poll (EV_A_ waittime);
1491 1570
1492 /* update ev_rt_now, do magic */ 1571 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 1572 time_update (EV_A_ waittime + sleeptime);
1494 } 1573 }
1495 1574
1496 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 1577#if EV_PERIODIC_ENABLE
… …
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2272 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 2273
2195 if (ev_cb (w)) 2274 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2275 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 2276 else
2198 ev_embed_sweep (loop, w); 2277 ev_loop (w->other, EVLOOP_NONBLOCK);
2199} 2278}
2200 2279
2201static void 2280static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 2281embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 2282{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 2283 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 2284
2206 fd_reify (w->other); 2285 {
2286 struct ev_loop *loop = w->other;
2287
2288 while (fdchangecnt)
2289 {
2290 fd_reify (EV_A);
2291 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2292 }
2293 }
2207} 2294}
2295
2296#if 0
2297static void
2298embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2299{
2300 ev_idle_stop (EV_A_ idle);
2301}
2302#endif
2208 2303
2209void 2304void
2210ev_embed_start (EV_P_ ev_embed *w) 2305ev_embed_start (EV_P_ ev_embed *w)
2211{ 2306{
2212 if (expect_false (ev_is_active (w))) 2307 if (expect_false (ev_is_active (w)))
… …
2223 2318
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 2319 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 2320 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 2321 ev_prepare_start (EV_A_ &w->prepare);
2227 2322
2323 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2324
2228 ev_start (EV_A_ (W)w, 1); 2325 ev_start (EV_A_ (W)w, 1);
2229} 2326}
2230 2327
2231void 2328void
2232ev_embed_stop (EV_P_ ev_embed *w) 2329ev_embed_stop (EV_P_ ev_embed *w)

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