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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC

… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
… …
182# include EV_H 178# include EV_H
183#else 179#else
184# include "ev.h" 180# include "ev.h"
185#endif 181#endif
186 182
183EV_CPP(extern "C" {)
184
187#ifndef _WIN32 185#ifndef _WIN32
188# include <sys/time.h> 186# include <sys/time.h>
189# include <sys/wait.h> 187# include <sys/wait.h>
190# include <unistd.h> 188# include <unistd.h>
191#else 189#else
… …
411# define EFD_CLOEXEC O_CLOEXEC 409# define EFD_CLOEXEC O_CLOEXEC
412# else 410# else
413# define EFD_CLOEXEC 02000000 411# define EFD_CLOEXEC 02000000
414# endif 412# endif
415# endif 413# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 415#endif
424 416
425#if EV_USE_SIGNALFD 417#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 419# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 425# define SFD_CLOEXEC O_CLOEXEC
434# else 426# else
435# define SFD_CLOEXEC 02000000 427# define SFD_CLOEXEC 02000000
436# endif 428# endif
437# endif 429# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 431
443struct signalfd_siginfo 432struct signalfd_siginfo
444{ 433{
445 uint32_t ssi_signo; 434 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 435 char pad[128 - sizeof (uint32_t)];
447}; 436};
448# ifdef __cplusplus
449}
450# endif 437#endif
451#endif
452
453 438
454/**/ 439/**/
455 440
456#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
… …
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
471 456
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462
475#if __GNUC__ >= 4 463#if __GNUC__ >= 4
476# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
477# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
478#else 466#else
479# define expect(expr,value) (expr) 467# define expect(expr,value) (expr)
… …
715# define EV_RELEASE_CB (void)0 703# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 704# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 706#endif
719 707
720#define EVUNLOOP_RECURSE 0x80 708#define EVBREAK_RECURSE 0x80
721 709
722/*****************************************************************************/ 710/*****************************************************************************/
723 711
724#ifndef EV_HAVE_EV_TIME 712#ifndef EV_HAVE_EV_TIME
725ev_tstamp 713ev_tstamp
… …
769 if (delay > 0.) 757 if (delay > 0.)
770 { 758 {
771#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
772 struct timespec ts; 760 struct timespec ts;
773 761
774 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
778#elif defined(_WIN32) 764#elif defined(_WIN32)
779 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
780#else 766#else
781 struct timeval tv; 767 struct timeval tv;
782 768
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 770 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 771 /* by older ones */
772 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
790#endif 774#endif
791 } 775 }
792} 776}
793 777
… …
945 { 929 {
946 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
948 ev_io *w; 932 ev_io *w;
949 933
950 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
951 936
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 938
955#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
956 if (events) 940 if (o_reify & EV__IOFDSET)
957 { 941 {
958 unsigned long arg; 942 unsigned long arg;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
961 } 945 }
962#endif 946#endif
963 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
964 { 949 {
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events; 950 anfd->events = 0;
970 951
971 if (o_events != events || o_reify & EV__IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 961 }
975 962
976 fdchangecnt = 0; 963 fdchangecnt = 0;
977} 964}
978 965
… …
2291 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
2292 } 2279 }
2293} 2280}
2294 2281
2295void 2282void
2296ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
2297{ 2284{
2298#if EV_FEATURE_API 2285#if EV_FEATURE_API
2299 ++loop_depth; 2286 ++loop_depth;
2300#endif 2287#endif
2301 2288
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 2290
2304 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
2305 2292
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 2294
2308 do 2295 do
2309 { 2296 {
… …
2352 /* calculate blocking time */ 2339 /* calculate blocking time */
2353 { 2340 {
2354 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
2356 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2358 { 2351 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 2352 waittime = MAX_BLOCKTIME;
2366 2353
2367 if (timercnt) 2354 if (timercnt)
2368 { 2355 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2399 } 2386 }
2400 2387
2401#if EV_FEATURE_API 2388#if EV_FEATURE_API
2402 ++loop_count; 2389 ++loop_count;
2403#endif 2390#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2407 2394
2408 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
2410 } 2397 }
2411 2398
… …
2429 EV_INVOKE_PENDING; 2416 EV_INVOKE_PENDING;
2430 } 2417 }
2431 while (expect_true ( 2418 while (expect_true (
2432 activecnt 2419 activecnt
2433 && !loop_done 2420 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 2422 ));
2436 2423
2437 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
2439 2426
2440#if EV_FEATURE_API 2427#if EV_FEATURE_API
2441 --loop_depth; 2428 --loop_depth;
2442#endif 2429#endif
2443} 2430}
2444 2431
2445void 2432void
2446ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
2447{ 2434{
2448 loop_done = how; 2435 loop_done = how;
2449} 2436}
2450 2437
2451void 2438void
… …
2599 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2600 2587
2601 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2603 2590
2604 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 2592
2606 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2607} 2594}
2608 2595
2609void noinline 2596void noinline
… …
3426 3413
3427#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
3428void noinline 3415void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
3430{ 3417{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
3432} 3419}
3433 3420
3434static void 3421static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 3423{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 3425
3439 if (ev_cb (w)) 3426 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 3428 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
3443} 3430}
3444 3431
3445static void 3432static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 3434{
… …
3451 EV_P = w->other; 3438 EV_P = w->other;
3452 3439
3453 while (fdchangecnt) 3440 while (fdchangecnt)
3454 { 3441 {
3455 fd_reify (EV_A); 3442 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 3444 }
3458 } 3445 }
3459} 3446}
3460 3447
3461static void 3448static void
… …
3467 3454
3468 { 3455 {
3469 EV_P = w->other; 3456 EV_P = w->other;
3470 3457
3471 ev_loop_fork (EV_A); 3458 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3459 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 3460 }
3474 3461
3475 ev_embed_start (EV_A_ w); 3462 ev_embed_start (EV_A_ w);
3476} 3463}
3477 3464
… …
3575void 3562void
3576ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
3577{ 3564{
3578 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
3579 return; 3566 return;
3567
3568 w->sent = 0;
3580 3569
3581 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
3582 3571
3583 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
3584 3573
… …
3804 3793
3805#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
3807#endif 3796#endif
3808 3797
3809#ifdef __cplusplus 3798EV_CPP(})
3810}
3811#endif
3812 3799

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