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Comparing libev/ev.c (file contents):
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC vs.
Revision 1.194 by root, Sat Dec 22 07:03:31 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/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
268 288
269#ifdef _WIN32 289#ifdef _WIN32
270# include "ev_win32.c" 290# include "ev_win32.c"
271#endif 291#endif
272 292
… …
408{ 428{
409 return ev_rt_now; 429 return ev_rt_now;
410} 430}
411#endif 431#endif
412 432
433void
434ev_sleep (ev_tstamp delay)
435{
436 if (delay > 0.)
437 {
438#if EV_USE_NANOSLEEP
439 struct timespec ts;
440
441 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443
444 nanosleep (&ts, 0);
445#elif defined(_WIN32)
446 Sleep (delay * 1e3);
447#else
448 struct timeval tv;
449
450 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452
453 select (0, 0, 0, 0, &tv);
454#endif
455 }
456}
457
458/*****************************************************************************/
459
413int inline_size 460int inline_size
414array_nextsize (int elem, int cur, int cnt) 461array_nextsize (int elem, int cur, int cnt)
415{ 462{
416 int ncur = cur + 1; 463 int ncur = cur + 1;
417 464
… …
925} 972}
926 973
927unsigned int 974unsigned int
928ev_embeddable_backends (void) 975ev_embeddable_backends (void)
929{ 976{
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
930 return EVBACKEND_EPOLL 978 return EVBACKEND_KQUEUE
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT; 979 | EVBACKEND_PORT;
933} 980}
934 981
935unsigned int 982unsigned int
936ev_backend (EV_P) 983ev_backend (EV_P)
… …
940 987
941unsigned int 988unsigned int
942ev_loop_count (EV_P) 989ev_loop_count (EV_P)
943{ 990{
944 return loop_count; 991 return loop_count;
992}
993
994void
995ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996{
997 io_blocktime = interval;
998}
999
1000void
1001ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 timeout_blocktime = interval;
945} 1004}
946 1005
947static void noinline 1006static void noinline
948loop_init (EV_P_ unsigned int flags) 1007loop_init (EV_P_ unsigned int flags)
949{ 1008{
… …
960 ev_rt_now = ev_time (); 1019 ev_rt_now = ev_time ();
961 mn_now = get_clock (); 1020 mn_now = get_clock ();
962 now_floor = mn_now; 1021 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now; 1022 rtmn_diff = ev_rt_now - mn_now;
964 1023
1024 io_blocktime = 0.;
1025 timeout_blocktime = 0.;
1026
965 /* pid check not overridable via env */ 1027 /* pid check not overridable via env */
966#ifndef _WIN32 1028#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1029 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1030 curpid = getpid ();
969#endif 1031#endif
… …
1046 array_free (fdchange, EMPTY); 1108 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1109 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1110#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1111 array_free (periodic, EMPTY);
1050#endif 1112#endif
1113#if EV_FORK_ENABLE
1114 array_free (fork, EMPTY);
1115#endif
1051 array_free (prepare, EMPTY); 1116 array_free (prepare, EMPTY);
1052 array_free (check, EMPTY); 1117 array_free (check, EMPTY);
1053 array_free (fork, EMPTY);
1054 1118
1055 backend = 0; 1119 backend = 0;
1056} 1120}
1057 1121
1058void inline_size infy_fork (EV_P); 1122void inline_size infy_fork (EV_P);
… …
1454 /* update fd-related kernel structures */ 1518 /* update fd-related kernel structures */
1455 fd_reify (EV_A); 1519 fd_reify (EV_A);
1456 1520
1457 /* calculate blocking time */ 1521 /* calculate blocking time */
1458 { 1522 {
1459 ev_tstamp block; 1523 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.;
1460 1525
1461 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1462 block = 0.; /* do not block at all */
1463 else
1464 { 1527 {
1465 /* update time to cancel out callback processing overhead */ 1528 /* update time to cancel out callback processing overhead */
1466 time_update (EV_A_ 1e100); 1529 time_update (EV_A_ 1e100);
1467 1530
1468 block = MAX_BLOCKTIME; 1531 waittime = MAX_BLOCKTIME;
1469 1532
1470 if (timercnt) 1533 if (timercnt)
1471 { 1534 {
1472 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1473 if (block > to) block = to; 1536 if (waittime > to) waittime = to;
1474 } 1537 }
1475 1538
1476#if EV_PERIODIC_ENABLE 1539#if EV_PERIODIC_ENABLE
1477 if (periodiccnt) 1540 if (periodiccnt)
1478 { 1541 {
1479 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1542 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1480 if (block > to) block = to; 1543 if (waittime > to) waittime = to;
1481 } 1544 }
1482#endif 1545#endif
1483 1546
1484 if (expect_false (block < 0.)) block = 0.; 1547 if (expect_false (waittime < timeout_blocktime))
1548 waittime = timeout_blocktime;
1549
1550 sleeptime = waittime - backend_fudge;
1551
1552 if (expect_true (sleeptime > io_blocktime))
1553 sleeptime = io_blocktime;
1554
1555 if (sleeptime)
1556 {
1557 ev_sleep (sleeptime);
1558 waittime -= sleeptime;
1559 }
1485 } 1560 }
1486 1561
1487 ++loop_count; 1562 ++loop_count;
1488 backend_poll (EV_A_ block); 1563 backend_poll (EV_A_ waittime);
1489 1564
1490 /* update ev_rt_now, do magic */ 1565 /* update ev_rt_now, do magic */
1491 time_update (EV_A_ block); 1566 time_update (EV_A_ waittime + sleeptime);
1492 } 1567 }
1493 1568
1494 /* queue pending timers and reschedule them */ 1569 /* queue pending timers and reschedule them */
1495 timers_reify (EV_A); /* relative timers called last */ 1570 timers_reify (EV_A); /* relative timers called last */
1496#if EV_PERIODIC_ENABLE 1571#if EV_PERIODIC_ENABLE
… …
2180 2255
2181#if EV_EMBED_ENABLE 2256#if EV_EMBED_ENABLE
2182void noinline 2257void noinline
2183ev_embed_sweep (EV_P_ ev_embed *w) 2258ev_embed_sweep (EV_P_ ev_embed *w)
2184{ 2259{
2185 ev_loop (w->loop, EVLOOP_NONBLOCK); 2260 ev_loop (w->other, EVLOOP_NONBLOCK);
2186} 2261}
2187 2262
2188static void 2263static void
2189embed_cb (EV_P_ ev_io *io, int revents) 2264embed_io_cb (EV_P_ ev_io *io, int revents)
2190{ 2265{
2191 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2266 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2192 2267
2193 if (ev_cb (w)) 2268 if (ev_cb (w))
2194 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2269 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2195 else 2270 else
2196 ev_embed_sweep (loop, w); 2271 ev_embed_sweep (loop, w);
2197} 2272}
2198 2273
2274static void
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278
2279 fd_reify (w->other);
2280}
2281
2199void 2282void
2200ev_embed_start (EV_P_ ev_embed *w) 2283ev_embed_start (EV_P_ ev_embed *w)
2201{ 2284{
2202 if (expect_false (ev_is_active (w))) 2285 if (expect_false (ev_is_active (w)))
2203 return; 2286 return;
2204 2287
2205 { 2288 {
2206 struct ev_loop *loop = w->loop; 2289 struct ev_loop *loop = w->other;
2207 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2290 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2208 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2291 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2209 } 2292 }
2210 2293
2211 ev_set_priority (&w->io, ev_priority (w)); 2294 ev_set_priority (&w->io, ev_priority (w));
2212 ev_io_start (EV_A_ &w->io); 2295 ev_io_start (EV_A_ &w->io);
2213 2296
2297 ev_prepare_init (&w->prepare, embed_prepare_cb);
2298 ev_set_priority (&w->prepare, EV_MINPRI);
2299 ev_prepare_start (EV_A_ &w->prepare);
2300
2214 ev_start (EV_A_ (W)w, 1); 2301 ev_start (EV_A_ (W)w, 1);
2215} 2302}
2216 2303
2217void 2304void
2218ev_embed_stop (EV_P_ ev_embed *w) 2305ev_embed_stop (EV_P_ ev_embed *w)
… …
2220 clear_pending (EV_A_ (W)w); 2307 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w))) 2308 if (expect_false (!ev_is_active (w)))
2222 return; 2309 return;
2223 2310
2224 ev_io_stop (EV_A_ &w->io); 2311 ev_io_stop (EV_A_ &w->io);
2312 ev_prepare_stop (EV_A_ &w->prepare);
2225 2313
2226 ev_stop (EV_A_ (W)w); 2314 ev_stop (EV_A_ (W)w);
2227} 2315}
2228#endif 2316#endif
2229 2317
… …
2318 ev_timer_set (&once->to, timeout, 0.); 2406 ev_timer_set (&once->to, timeout, 0.);
2319 ev_timer_start (EV_A_ &once->to); 2407 ev_timer_start (EV_A_ &once->to);
2320 } 2408 }
2321} 2409}
2322 2410
2411#if EV_MULTIPLICITY
2412 #include "ev_wrap.h"
2413#endif
2414
2323#ifdef __cplusplus 2415#ifdef __cplusplus
2324} 2416}
2325#endif 2417#endif
2326 2418

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