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Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 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
… …
202#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
205#endif 217#endif
206 218
219#if !EV_STAT_ENABLE
220# undef EV_USE_INOTIFY
221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
228#endif
229
230#if EV_USE_INOTIFY
231# include <sys/inotify.h>
232#endif
233
207#if EV_SELECT_IS_WINSOCKET 234#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 235# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif 236#endif
218 237
219/**/ 238/**/
220 239
221/* 240/*
… …
230 249
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234 253
235#if __GNUC__ >= 3 254#if __GNUC__ >= 4
236# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
237# define noinline __attribute__ ((noinline)) 256# define noinline __attribute__ ((noinline))
238#else 257#else
239# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
240# define noinline 259# define noinline
… …
407{ 426{
408 return ev_rt_now; 427 return ev_rt_now;
409} 428}
410#endif 429#endif
411 430
431void
432ev_sleep (ev_tstamp delay)
433{
434 if (delay > 0.)
435 {
436#if EV_USE_NANOSLEEP
437 struct timespec ts;
438
439 ts.tv_sec = (time_t)delay;
440 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
441
442 nanosleep (&ts, 0);
443#elif defined(_WIN32)
444 Sleep (delay * 1e3);
445#else
446 struct timeval tv;
447
448 tv.tv_sec = (time_t)delay;
449 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
450
451 select (0, 0, 0, 0, &tv);
452#endif
453 }
454}
455
456/*****************************************************************************/
457
412int inline_size 458int inline_size
413array_nextsize (int elem, int cur, int cnt) 459array_nextsize (int elem, int cur, int cnt)
414{ 460{
415 int ncur = cur + 1; 461 int ncur = cur + 1;
416 462
… …
924} 970}
925 971
926unsigned int 972unsigned int
927ev_embeddable_backends (void) 973ev_embeddable_backends (void)
928{ 974{
975 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
929 return EVBACKEND_EPOLL 976 return EVBACKEND_KQUEUE
930 | EVBACKEND_KQUEUE
931 | EVBACKEND_PORT; 977 | EVBACKEND_PORT;
932} 978}
933 979
934unsigned int 980unsigned int
935ev_backend (EV_P) 981ev_backend (EV_P)
… …
939 985
940unsigned int 986unsigned int
941ev_loop_count (EV_P) 987ev_loop_count (EV_P)
942{ 988{
943 return loop_count; 989 return loop_count;
990}
991
992void
993ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
994{
995 io_blocktime = interval;
996}
997
998void
999ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 timeout_blocktime = interval;
944} 1002}
945 1003
946static void noinline 1004static void noinline
947loop_init (EV_P_ unsigned int flags) 1005loop_init (EV_P_ unsigned int flags)
948{ 1006{
… …
959 ev_rt_now = ev_time (); 1017 ev_rt_now = ev_time ();
960 mn_now = get_clock (); 1018 mn_now = get_clock ();
961 now_floor = mn_now; 1019 now_floor = mn_now;
962 rtmn_diff = ev_rt_now - mn_now; 1020 rtmn_diff = ev_rt_now - mn_now;
963 1021
1022 io_blocktime = 0.;
1023 timeout_blocktime = 0.;
1024
964 /* pid check not overridable via env */ 1025 /* pid check not overridable via env */
965#ifndef _WIN32 1026#ifndef _WIN32
966 if (flags & EVFLAG_FORKCHECK) 1027 if (flags & EVFLAG_FORKCHECK)
967 curpid = getpid (); 1028 curpid = getpid ();
968#endif 1029#endif
… …
1036 array_free (pending, [i]); 1097 array_free (pending, [i]);
1037#if EV_IDLE_ENABLE 1098#if EV_IDLE_ENABLE
1038 array_free (idle, [i]); 1099 array_free (idle, [i]);
1039#endif 1100#endif
1040 } 1101 }
1102
1103 ev_free (anfds); anfdmax = 0;
1041 1104
1042 /* have to use the microsoft-never-gets-it-right macro */ 1105 /* have to use the microsoft-never-gets-it-right macro */
1043 array_free (fdchange, EMPTY); 1106 array_free (fdchange, EMPTY);
1044 array_free (timer, EMPTY); 1107 array_free (timer, EMPTY);
1045#if EV_PERIODIC_ENABLE 1108#if EV_PERIODIC_ENABLE
1046 array_free (periodic, EMPTY); 1109 array_free (periodic, EMPTY);
1110#endif
1111#if EV_FORK_ENABLE
1112 array_free (fork, EMPTY);
1047#endif 1113#endif
1048 array_free (prepare, EMPTY); 1114 array_free (prepare, EMPTY);
1049 array_free (check, EMPTY); 1115 array_free (check, EMPTY);
1050 1116
1051 backend = 0; 1117 backend = 0;
… …
1450 /* update fd-related kernel structures */ 1516 /* update fd-related kernel structures */
1451 fd_reify (EV_A); 1517 fd_reify (EV_A);
1452 1518
1453 /* calculate blocking time */ 1519 /* calculate blocking time */
1454 { 1520 {
1455 ev_tstamp block; 1521 ev_tstamp waittime = 0.;
1522 ev_tstamp sleeptime = 0.;
1456 1523
1457 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1524 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1458 block = 0.; /* do not block at all */
1459 else
1460 { 1525 {
1461 /* update time to cancel out callback processing overhead */ 1526 /* update time to cancel out callback processing overhead */
1462 time_update (EV_A_ 1e100); 1527 time_update (EV_A_ 1e100);
1463 1528
1464 block = MAX_BLOCKTIME; 1529 waittime = MAX_BLOCKTIME;
1465 1530
1466 if (timercnt) 1531 if (timercnt)
1467 { 1532 {
1468 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1533 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1469 if (block > to) block = to; 1534 if (waittime > to) waittime = to;
1470 } 1535 }
1471 1536
1472#if EV_PERIODIC_ENABLE 1537#if EV_PERIODIC_ENABLE
1473 if (periodiccnt) 1538 if (periodiccnt)
1474 { 1539 {
1475 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1540 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1476 if (block > to) block = to; 1541 if (waittime > to) waittime = to;
1477 } 1542 }
1478#endif 1543#endif
1479 1544
1480 if (expect_false (block < 0.)) block = 0.; 1545 if (expect_false (waittime < timeout_blocktime))
1546 waittime = timeout_blocktime;
1547
1548 sleeptime = waittime - backend_fudge;
1549
1550 if (expect_true (sleeptime > io_blocktime))
1551 sleeptime = io_blocktime;
1552
1553 if (sleeptime)
1554 {
1555 ev_sleep (sleeptime);
1556 waittime -= sleeptime;
1557 }
1481 } 1558 }
1482 1559
1483 ++loop_count; 1560 ++loop_count;
1484 backend_poll (EV_A_ block); 1561 backend_poll (EV_A_ waittime);
1485 1562
1486 /* update ev_rt_now, do magic */ 1563 /* update ev_rt_now, do magic */
1487 time_update (EV_A_ block); 1564 time_update (EV_A_ waittime + sleeptime);
1488 } 1565 }
1489 1566
1490 /* queue pending timers and reschedule them */ 1567 /* queue pending timers and reschedule them */
1491 timers_reify (EV_A); /* relative timers called last */ 1568 timers_reify (EV_A); /* relative timers called last */
1492#if EV_PERIODIC_ENABLE 1569#if EV_PERIODIC_ENABLE
… …
2176 2253
2177#if EV_EMBED_ENABLE 2254#if EV_EMBED_ENABLE
2178void noinline 2255void noinline
2179ev_embed_sweep (EV_P_ ev_embed *w) 2256ev_embed_sweep (EV_P_ ev_embed *w)
2180{ 2257{
2181 ev_loop (w->loop, EVLOOP_NONBLOCK); 2258 ev_loop (w->other, EVLOOP_NONBLOCK);
2182} 2259}
2183 2260
2184static void 2261static void
2185embed_cb (EV_P_ ev_io *io, int revents) 2262embed_io_cb (EV_P_ ev_io *io, int revents)
2186{ 2263{
2187 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2264 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2188 2265
2189 if (ev_cb (w)) 2266 if (ev_cb (w))
2190 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2267 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191 else 2268 else
2192 ev_embed_sweep (loop, w); 2269 ev_embed_sweep (loop, w);
2193} 2270}
2194 2271
2272static void
2273embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2274{
2275 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2276
2277 fd_reify (w->other);
2278}
2279
2195void 2280void
2196ev_embed_start (EV_P_ ev_embed *w) 2281ev_embed_start (EV_P_ ev_embed *w)
2197{ 2282{
2198 if (expect_false (ev_is_active (w))) 2283 if (expect_false (ev_is_active (w)))
2199 return; 2284 return;
2200 2285
2201 { 2286 {
2202 struct ev_loop *loop = w->loop; 2287 struct ev_loop *loop = w->other;
2203 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2288 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2289 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2205 } 2290 }
2206 2291
2207 ev_set_priority (&w->io, ev_priority (w)); 2292 ev_set_priority (&w->io, ev_priority (w));
2208 ev_io_start (EV_A_ &w->io); 2293 ev_io_start (EV_A_ &w->io);
2209 2294
2295 ev_prepare_init (&w->prepare, embed_prepare_cb);
2296 ev_set_priority (&w->prepare, EV_MINPRI);
2297 ev_prepare_start (EV_A_ &w->prepare);
2298
2210 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
2211} 2300}
2212 2301
2213void 2302void
2214ev_embed_stop (EV_P_ ev_embed *w) 2303ev_embed_stop (EV_P_ ev_embed *w)
… …
2216 clear_pending (EV_A_ (W)w); 2305 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w))) 2306 if (expect_false (!ev_is_active (w)))
2218 return; 2307 return;
2219 2308
2220 ev_io_stop (EV_A_ &w->io); 2309 ev_io_stop (EV_A_ &w->io);
2310 ev_prepare_stop (EV_A_ &w->prepare);
2221 2311
2222 ev_stop (EV_A_ (W)w); 2312 ev_stop (EV_A_ (W)w);
2223} 2313}
2224#endif 2314#endif
2225 2315
… …
2314 ev_timer_set (&once->to, timeout, 0.); 2404 ev_timer_set (&once->to, timeout, 0.);
2315 ev_timer_start (EV_A_ &once->to); 2405 ev_timer_start (EV_A_ &once->to);
2316 } 2406 }
2317} 2407}
2318 2408
2409#if EV_MULTIPLICITY
2410 #include "ev_wrap.h"
2411#endif
2412
2319#ifdef __cplusplus 2413#ifdef __cplusplus
2320} 2414}
2321#endif 2415#endif
2322 2416

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