… | |
… | |
124 | # else |
124 | # else |
125 | # undef EV_USE_LINUXAIO |
125 | # undef EV_USE_LINUXAIO |
126 | # define EV_USE_LINUXAIO 0 |
126 | # define EV_USE_LINUXAIO 0 |
127 | # endif |
127 | # endif |
128 | |
128 | |
|
|
129 | # if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T |
|
|
130 | # ifndef EV_USE_IOURING |
|
|
131 | # define EV_USE_IOURING EV_FEATURE_BACKENDS |
|
|
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_IOURING |
|
|
135 | # define EV_USE_IOURING 0 |
|
|
136 | # endif |
|
|
137 | |
129 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
138 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
130 | # ifndef EV_USE_KQUEUE |
139 | # ifndef EV_USE_KQUEUE |
131 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
140 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
132 | # endif |
141 | # endif |
133 | # else |
142 | # else |
… | |
… | |
168 | # endif |
177 | # endif |
169 | # else |
178 | # else |
170 | # undef EV_USE_EVENTFD |
179 | # undef EV_USE_EVENTFD |
171 | # define EV_USE_EVENTFD 0 |
180 | # define EV_USE_EVENTFD 0 |
172 | # endif |
181 | # endif |
173 | |
182 | |
|
|
183 | # if HAVE_SYS_TIMERFD_H |
|
|
184 | # ifndef EV_USE_TIMERFD |
|
|
185 | # define EV_USE_TIMERFD EV_FEATURE_OS |
|
|
186 | # endif |
|
|
187 | # else |
|
|
188 | # undef EV_USE_TIMERFD |
|
|
189 | # define EV_USE_TIMERFD 0 |
|
|
190 | # endif |
|
|
191 | |
174 | #endif |
192 | #endif |
175 | |
193 | |
176 | /* OS X, in its infinite idiocy, actually HARDCODES |
194 | /* OS X, in its infinite idiocy, actually HARDCODES |
177 | * a limit of 1024 into their select. Where people have brains, |
195 | * a limit of 1024 into their select. Where people have brains, |
178 | * OS X engineers apparently have a vacuum. Or maybe they were |
196 | * OS X engineers apparently have a vacuum. Or maybe they were |
… | |
… | |
333 | # define EV_USE_LINUXAIO 0 |
351 | # define EV_USE_LINUXAIO 0 |
334 | # endif |
352 | # endif |
335 | #endif |
353 | #endif |
336 | |
354 | |
337 | #ifndef EV_USE_IOURING |
355 | #ifndef EV_USE_IOURING |
338 | # if __linux |
356 | # if __linux /* later checks might disable again */ |
339 | # define EV_USE_IOURING 0 |
357 | # define EV_USE_IOURING 1 |
340 | # else |
358 | # else |
341 | # define EV_USE_IOURING 0 |
359 | # define EV_USE_IOURING 0 |
342 | # endif |
360 | # endif |
343 | #endif |
361 | #endif |
344 | |
362 | |
… | |
… | |
369 | #ifndef EV_USE_SIGNALFD |
387 | #ifndef EV_USE_SIGNALFD |
370 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
388 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
371 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
389 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
372 | # else |
390 | # else |
373 | # define EV_USE_SIGNALFD 0 |
391 | # define EV_USE_SIGNALFD 0 |
|
|
392 | # endif |
|
|
393 | #endif |
|
|
394 | |
|
|
395 | #ifndef EV_USE_TIMERFD |
|
|
396 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)) |
|
|
397 | # define EV_USE_TIMERFD EV_FEATURE_OS |
|
|
398 | # else |
|
|
399 | # define EV_USE_TIMERFD 0 |
374 | # endif |
400 | # endif |
375 | #endif |
401 | #endif |
376 | |
402 | |
377 | #if 0 /* debugging */ |
403 | #if 0 /* debugging */ |
378 | # define EV_VERIFY 3 |
404 | # define EV_VERIFY 3 |
… | |
… | |
438 | #if !EV_STAT_ENABLE |
464 | #if !EV_STAT_ENABLE |
439 | # undef EV_USE_INOTIFY |
465 | # undef EV_USE_INOTIFY |
440 | # define EV_USE_INOTIFY 0 |
466 | # define EV_USE_INOTIFY 0 |
441 | #endif |
467 | #endif |
442 | |
468 | |
|
|
469 | #if __linux && EV_USE_IOURING |
|
|
470 | # include <linux/version.h> |
|
|
471 | # if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0) |
|
|
472 | # undef EV_USE_IOURING |
|
|
473 | # define EV_USE_IOURING 0 |
|
|
474 | # endif |
|
|
475 | #endif |
|
|
476 | |
443 | #if !EV_USE_NANOSLEEP |
477 | #if !EV_USE_NANOSLEEP |
444 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
478 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
445 | # if !defined _WIN32 && !defined __hpux |
479 | # if !defined _WIN32 && !defined __hpux |
446 | # include <sys/select.h> |
480 | # include <sys/select.h> |
447 | # endif |
481 | # endif |
… | |
… | |
481 | # define EV_USE_INOTIFY 0 |
515 | # define EV_USE_INOTIFY 0 |
482 | # endif |
516 | # endif |
483 | #endif |
517 | #endif |
484 | |
518 | |
485 | #if EV_USE_EVENTFD |
519 | #if EV_USE_EVENTFD |
486 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
520 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
487 | # include <stdint.h> |
521 | # include <stdint.h> |
488 | # ifndef EFD_NONBLOCK |
522 | # ifndef EFD_NONBLOCK |
489 | # define EFD_NONBLOCK O_NONBLOCK |
523 | # define EFD_NONBLOCK O_NONBLOCK |
490 | # endif |
524 | # endif |
491 | # ifndef EFD_CLOEXEC |
525 | # ifndef EFD_CLOEXEC |
… | |
… | |
497 | # endif |
531 | # endif |
498 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
532 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
499 | #endif |
533 | #endif |
500 | |
534 | |
501 | #if EV_USE_SIGNALFD |
535 | #if EV_USE_SIGNALFD |
502 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
536 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
503 | # include <stdint.h> |
537 | # include <stdint.h> |
504 | # ifndef SFD_NONBLOCK |
538 | # ifndef SFD_NONBLOCK |
505 | # define SFD_NONBLOCK O_NONBLOCK |
539 | # define SFD_NONBLOCK O_NONBLOCK |
506 | # endif |
540 | # endif |
507 | # ifndef SFD_CLOEXEC |
541 | # ifndef SFD_CLOEXEC |
… | |
… | |
509 | # define SFD_CLOEXEC O_CLOEXEC |
543 | # define SFD_CLOEXEC O_CLOEXEC |
510 | # else |
544 | # else |
511 | # define SFD_CLOEXEC 02000000 |
545 | # define SFD_CLOEXEC 02000000 |
512 | # endif |
546 | # endif |
513 | # endif |
547 | # endif |
514 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
548 | EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags); |
515 | |
549 | |
516 | struct signalfd_siginfo |
550 | struct signalfd_siginfo |
517 | { |
551 | { |
518 | uint32_t ssi_signo; |
552 | uint32_t ssi_signo; |
519 | char pad[128 - sizeof (uint32_t)]; |
553 | char pad[128 - sizeof (uint32_t)]; |
520 | }; |
554 | }; |
|
|
555 | #endif |
|
|
556 | |
|
|
557 | /* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */ |
|
|
558 | #if EV_USE_TIMERFD |
|
|
559 | # include <sys/timerfd.h> |
|
|
560 | /* timerfd is only used for periodics */ |
|
|
561 | # if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE |
|
|
562 | # undef EV_USE_TIMERFD |
|
|
563 | # define EV_USE_TIMERFD 0 |
|
|
564 | # endif |
521 | #endif |
565 | #endif |
522 | |
566 | |
523 | /*****************************************************************************/ |
567 | /*****************************************************************************/ |
524 | |
568 | |
525 | #if EV_VERIFY >= 3 |
569 | #if EV_VERIFY >= 3 |
… | |
… | |
536 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
580 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
537 | |
581 | |
538 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
582 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
539 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
583 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
540 | |
584 | |
541 | /* find a portable timestamp that is "alawys" in the future but fits into time_t. |
585 | /* find a portable timestamp that is "always" in the future but fits into time_t. |
542 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
586 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
543 | * and sizes large than 32 bit, but and maybe the unlikely loating point time_t */ |
587 | * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */ |
544 | #define EV_TSTAMP_HUGE \ |
588 | #define EV_TSTAMP_HUGE \ |
545 | (sizeof (time_t) >= 8 ? 10000000000000. \ |
589 | (sizeof (time_t) >= 8 ? 10000000000000. \ |
546 | : 0 < (time_t)4294967295 ? 4294967295. \ |
590 | : 0 < (time_t)4294967295 ? 4294967295. \ |
547 | : 2147483647.) \ |
591 | : 2147483647.) \ |
548 | |
592 | |
|
|
593 | #ifndef EV_TS_CONST |
|
|
594 | # define EV_TS_CONST(nv) nv |
|
|
595 | # define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999 |
|
|
596 | # define EV_TS_FROM_USEC(us) us * 1e-6 |
549 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
597 | # define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
550 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
598 | # define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
599 | # define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6) |
|
|
600 | # define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9) |
|
|
601 | #endif |
551 | |
602 | |
552 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
603 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
553 | /* ECB.H BEGIN */ |
604 | /* ECB.H BEGIN */ |
554 | /* |
605 | /* |
555 | * libecb - http://software.schmorp.de/pkg/libecb |
606 | * libecb - http://software.schmorp.de/pkg/libecb |
… | |
… | |
1726 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
1777 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
1727 | #else |
1778 | #else |
1728 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
1779 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
1729 | #endif |
1780 | #endif |
1730 | |
1781 | |
|
|
1782 | /* special treatment for negative arguments */ |
|
|
1783 | if (ecb_expect_false (v < 0.)) |
|
|
1784 | { |
|
|
1785 | ev_tstamp f = -ev_floor (-v); |
|
|
1786 | |
|
|
1787 | return f - (f == v ? 0 : 1); |
|
|
1788 | } |
|
|
1789 | |
1731 | /* argument too large for an unsigned long? */ |
1790 | /* argument too large for an unsigned long? then reduce it */ |
1732 | if (ecb_expect_false (v >= shift)) |
1791 | if (ecb_expect_false (v >= shift)) |
1733 | { |
1792 | { |
1734 | ev_tstamp f; |
1793 | ev_tstamp f; |
1735 | |
1794 | |
1736 | if (v == v - 1.) |
1795 | if (v == v - 1.) |
1737 | return v; /* very large number */ |
1796 | return v; /* very large numbers are assumed to be integer */ |
1738 | |
1797 | |
1739 | f = shift * ev_floor (v * (1. / shift)); |
1798 | f = shift * ev_floor (v * (1. / shift)); |
1740 | return f + ev_floor (v - f); |
1799 | return f + ev_floor (v - f); |
1741 | } |
|
|
1742 | |
|
|
1743 | /* special treatment for negative args? */ |
|
|
1744 | if (ecb_expect_false (v < 0.)) |
|
|
1745 | { |
|
|
1746 | ev_tstamp f = -ev_floor (-v); |
|
|
1747 | |
|
|
1748 | return f - (f == v ? 0 : 1); |
|
|
1749 | } |
1800 | } |
1750 | |
1801 | |
1751 | /* fits into an unsigned long */ |
1802 | /* fits into an unsigned long */ |
1752 | return (unsigned long)v; |
1803 | return (unsigned long)v; |
1753 | } |
1804 | } |
… | |
… | |
1961 | static struct ev_loop default_loop_struct; |
2012 | static struct ev_loop default_loop_struct; |
1962 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
2013 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
1963 | |
2014 | |
1964 | #else |
2015 | #else |
1965 | |
2016 | |
1966 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
2017 | EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */ |
1967 | #define VAR(name,decl) static decl; |
2018 | #define VAR(name,decl) static decl; |
1968 | #include "ev_vars.h" |
2019 | #include "ev_vars.h" |
1969 | #undef VAR |
2020 | #undef VAR |
1970 | |
2021 | |
1971 | static int ev_default_loop_ptr; |
2022 | static int ev_default_loop_ptr; |
… | |
… | |
1993 | #if EV_USE_REALTIME |
2044 | #if EV_USE_REALTIME |
1994 | if (ecb_expect_true (have_realtime)) |
2045 | if (ecb_expect_true (have_realtime)) |
1995 | { |
2046 | { |
1996 | struct timespec ts; |
2047 | struct timespec ts; |
1997 | clock_gettime (CLOCK_REALTIME, &ts); |
2048 | clock_gettime (CLOCK_REALTIME, &ts); |
1998 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2049 | return EV_TS_GET (ts); |
1999 | } |
2050 | } |
2000 | #endif |
2051 | #endif |
2001 | |
2052 | |
|
|
2053 | { |
2002 | struct timeval tv; |
2054 | struct timeval tv; |
2003 | gettimeofday (&tv, 0); |
2055 | gettimeofday (&tv, 0); |
2004 | return tv.tv_sec + tv.tv_usec * 1e-6; |
2056 | return EV_TV_GET (tv); |
|
|
2057 | } |
2005 | } |
2058 | } |
2006 | #endif |
2059 | #endif |
2007 | |
2060 | |
2008 | inline_size ev_tstamp |
2061 | inline_size ev_tstamp |
2009 | get_clock (void) |
2062 | get_clock (void) |
… | |
… | |
2011 | #if EV_USE_MONOTONIC |
2064 | #if EV_USE_MONOTONIC |
2012 | if (ecb_expect_true (have_monotonic)) |
2065 | if (ecb_expect_true (have_monotonic)) |
2013 | { |
2066 | { |
2014 | struct timespec ts; |
2067 | struct timespec ts; |
2015 | clock_gettime (CLOCK_MONOTONIC, &ts); |
2068 | clock_gettime (CLOCK_MONOTONIC, &ts); |
2016 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2069 | return EV_TS_GET (ts); |
2017 | } |
2070 | } |
2018 | #endif |
2071 | #endif |
2019 | |
2072 | |
2020 | return ev_time (); |
2073 | return ev_time (); |
2021 | } |
2074 | } |
… | |
… | |
2029 | #endif |
2082 | #endif |
2030 | |
2083 | |
2031 | void |
2084 | void |
2032 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
2085 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
2033 | { |
2086 | { |
2034 | if (delay > 0.) |
2087 | if (delay > EV_TS_CONST (0.)) |
2035 | { |
2088 | { |
2036 | #if EV_USE_NANOSLEEP |
2089 | #if EV_USE_NANOSLEEP |
2037 | struct timespec ts; |
2090 | struct timespec ts; |
2038 | |
2091 | |
2039 | EV_TS_SET (ts, delay); |
2092 | EV_TS_SET (ts, delay); |
2040 | nanosleep (&ts, 0); |
2093 | nanosleep (&ts, 0); |
2041 | #elif defined _WIN32 |
2094 | #elif defined _WIN32 |
2042 | /* maybe this should round up, as ms is very low resolution */ |
2095 | /* maybe this should round up, as ms is very low resolution */ |
2043 | /* compared to select (µs) or nanosleep (ns) */ |
2096 | /* compared to select (µs) or nanosleep (ns) */ |
2044 | Sleep ((unsigned long)(delay * 1e3)); |
2097 | Sleep ((unsigned long)(EV_TS_TO_MSEC (delay))); |
2045 | #else |
2098 | #else |
2046 | struct timeval tv; |
2099 | struct timeval tv; |
2047 | |
2100 | |
2048 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
2101 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
2049 | /* something not guaranteed by newer posix versions, but guaranteed */ |
2102 | /* something not guaranteed by newer posix versions, but guaranteed */ |
… | |
… | |
2399 | |
2452 | |
2400 | /* find minimum child */ |
2453 | /* find minimum child */ |
2401 | if (ecb_expect_true (pos + DHEAP - 1 < E)) |
2454 | if (ecb_expect_true (pos + DHEAP - 1 < E)) |
2402 | { |
2455 | { |
2403 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
2456 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
2404 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
2457 | if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
2405 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
2458 | if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
2406 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
2459 | if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
2407 | } |
2460 | } |
2408 | else if (pos < E) |
2461 | else if (pos < E) |
2409 | { |
2462 | { |
2410 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
2463 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
2411 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
2464 | if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
2412 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
2465 | if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
2413 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
2466 | if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
2414 | } |
2467 | } |
2415 | else |
2468 | else |
2416 | break; |
2469 | break; |
2417 | |
2470 | |
2418 | if (ANHE_at (he) <= minat) |
2471 | if (ANHE_at (he) <= minat) |
… | |
… | |
2426 | |
2479 | |
2427 | heap [k] = he; |
2480 | heap [k] = he; |
2428 | ev_active (ANHE_w (he)) = k; |
2481 | ev_active (ANHE_w (he)) = k; |
2429 | } |
2482 | } |
2430 | |
2483 | |
2431 | #else /* 4HEAP */ |
2484 | #else /* not 4HEAP */ |
2432 | |
2485 | |
2433 | #define HEAP0 1 |
2486 | #define HEAP0 1 |
2434 | #define HPARENT(k) ((k) >> 1) |
2487 | #define HPARENT(k) ((k) >> 1) |
2435 | #define UPHEAP_DONE(p,k) (!(p)) |
2488 | #define UPHEAP_DONE(p,k) (!(p)) |
2436 | |
2489 | |
… | |
… | |
2822 | |
2875 | |
2823 | #endif |
2876 | #endif |
2824 | |
2877 | |
2825 | /*****************************************************************************/ |
2878 | /*****************************************************************************/ |
2826 | |
2879 | |
|
|
2880 | #if EV_USE_TIMERFD |
|
|
2881 | |
|
|
2882 | static void periodics_reschedule (EV_P); |
|
|
2883 | |
|
|
2884 | static void |
|
|
2885 | timerfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2886 | { |
|
|
2887 | struct itimerspec its = { 0 }; |
|
|
2888 | |
|
|
2889 | /* since we can't easily come zup with a (portable) maximum value of time_t, |
|
|
2890 | * we wake up once per month, which hopefully is rare enough to not |
|
|
2891 | * be a problem. */ |
|
|
2892 | its.it_value.tv_sec = ev_rt_now + 86400 * 30; |
|
|
2893 | timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0); |
|
|
2894 | |
|
|
2895 | ev_rt_now = ev_time (); |
|
|
2896 | /* periodics_reschedule only needs ev_rt_now */ |
|
|
2897 | /* but maybe in the future we want the full treatment. */ |
|
|
2898 | /* |
|
|
2899 | now_floor = EV_TS_CONST (0.); |
|
|
2900 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
2901 | */ |
|
|
2902 | periodics_reschedule (EV_A); |
|
|
2903 | } |
|
|
2904 | |
|
|
2905 | ecb_noinline ecb_cold |
|
|
2906 | static void |
|
|
2907 | evtimerfd_init (EV_P) |
|
|
2908 | { |
|
|
2909 | if (!ev_is_active (&timerfd_w)) |
|
|
2910 | { |
|
|
2911 | timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC); |
|
|
2912 | |
|
|
2913 | if (timerfd >= 0) |
|
|
2914 | { |
|
|
2915 | fd_intern (timerfd); /* just to be sure */ |
|
|
2916 | |
|
|
2917 | ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ); |
|
|
2918 | ev_set_priority (&sigfd_w, EV_MINPRI); |
|
|
2919 | ev_io_start (EV_A_ &timerfd_w); |
|
|
2920 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2921 | |
|
|
2922 | /* (re-) arm timer */ |
|
|
2923 | timerfdcb (EV_A_ 0, 0); |
|
|
2924 | } |
|
|
2925 | } |
|
|
2926 | } |
|
|
2927 | |
|
|
2928 | #endif |
|
|
2929 | |
|
|
2930 | /*****************************************************************************/ |
|
|
2931 | |
2827 | #if EV_USE_IOCP |
2932 | #if EV_USE_IOCP |
2828 | # include "ev_iocp.c" |
2933 | # include "ev_iocp.c" |
2829 | #endif |
2934 | #endif |
2830 | #if EV_USE_PORT |
2935 | #if EV_USE_PORT |
2831 | # include "ev_port.c" |
2936 | # include "ev_port.c" |
… | |
… | |
3063 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3168 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3064 | #endif |
3169 | #endif |
3065 | #if EV_USE_SIGNALFD |
3170 | #if EV_USE_SIGNALFD |
3066 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3171 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3067 | #endif |
3172 | #endif |
|
|
3173 | #if EV_USE_TIMERFD |
|
|
3174 | timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2; |
|
|
3175 | #endif |
3068 | |
3176 | |
3069 | if (!(flags & EVBACKEND_MASK)) |
3177 | if (!(flags & EVBACKEND_MASK)) |
3070 | flags |= ev_recommended_backends (); |
3178 | flags |= ev_recommended_backends (); |
3071 | |
3179 | |
3072 | #if EV_USE_IOCP |
3180 | #if EV_USE_IOCP |
… | |
… | |
3143 | } |
3251 | } |
3144 | |
3252 | |
3145 | #if EV_USE_SIGNALFD |
3253 | #if EV_USE_SIGNALFD |
3146 | if (ev_is_active (&sigfd_w)) |
3254 | if (ev_is_active (&sigfd_w)) |
3147 | close (sigfd); |
3255 | close (sigfd); |
|
|
3256 | #endif |
|
|
3257 | |
|
|
3258 | #if EV_USE_TIMERFD |
|
|
3259 | if (ev_is_active (&timerfd_w)) |
|
|
3260 | close (timerfd); |
3148 | #endif |
3261 | #endif |
3149 | |
3262 | |
3150 | #if EV_USE_INOTIFY |
3263 | #if EV_USE_INOTIFY |
3151 | if (fs_fd >= 0) |
3264 | if (fs_fd >= 0) |
3152 | close (fs_fd); |
3265 | close (fs_fd); |
… | |
… | |
3245 | #endif |
3358 | #endif |
3246 | #if EV_USE_INOTIFY |
3359 | #if EV_USE_INOTIFY |
3247 | infy_fork (EV_A); |
3360 | infy_fork (EV_A); |
3248 | #endif |
3361 | #endif |
3249 | |
3362 | |
|
|
3363 | if (postfork != 2) |
|
|
3364 | { |
|
|
3365 | #if EV_USE_SIGNALFD |
|
|
3366 | /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */ |
|
|
3367 | #endif |
|
|
3368 | |
|
|
3369 | #if EV_USE_TIMERFD |
|
|
3370 | if (ev_is_active (&timerfd_w)) |
|
|
3371 | { |
|
|
3372 | ev_ref (EV_A); |
|
|
3373 | ev_io_stop (EV_A_ &timerfd_w); |
|
|
3374 | |
|
|
3375 | close (timerfd); |
|
|
3376 | timerfd = -2; |
|
|
3377 | |
|
|
3378 | evtimerfd_init (EV_A); |
|
|
3379 | /* reschedule periodics, in case we missed something */ |
|
|
3380 | ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM); |
|
|
3381 | } |
|
|
3382 | #endif |
|
|
3383 | |
3250 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3384 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3251 | if (ev_is_active (&pipe_w) && postfork != 2) |
3385 | if (ev_is_active (&pipe_w)) |
3252 | { |
3386 | { |
3253 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3387 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3254 | |
3388 | |
3255 | ev_ref (EV_A); |
3389 | ev_ref (EV_A); |
3256 | ev_io_stop (EV_A_ &pipe_w); |
3390 | ev_io_stop (EV_A_ &pipe_w); |
3257 | |
3391 | |
3258 | if (evpipe [0] >= 0) |
3392 | if (evpipe [0] >= 0) |
3259 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3393 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3260 | |
3394 | |
3261 | evpipe_init (EV_A); |
3395 | evpipe_init (EV_A); |
3262 | /* iterate over everything, in case we missed something before */ |
3396 | /* iterate over everything, in case we missed something before */ |
3263 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3397 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3398 | } |
|
|
3399 | #endif |
3264 | } |
3400 | } |
3265 | #endif |
|
|
3266 | |
3401 | |
3267 | postfork = 0; |
3402 | postfork = 0; |
3268 | } |
3403 | } |
3269 | |
3404 | |
3270 | #if EV_MULTIPLICITY |
3405 | #if EV_MULTIPLICITY |
… | |
… | |
3540 | { |
3675 | { |
3541 | ev_at (w) += w->repeat; |
3676 | ev_at (w) += w->repeat; |
3542 | if (ev_at (w) < mn_now) |
3677 | if (ev_at (w) < mn_now) |
3543 | ev_at (w) = mn_now; |
3678 | ev_at (w) = mn_now; |
3544 | |
3679 | |
3545 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
3680 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.))); |
3546 | |
3681 | |
3547 | ANHE_at_cache (timers [HEAP0]); |
3682 | ANHE_at_cache (timers [HEAP0]); |
3548 | downheap (timers, timercnt, HEAP0); |
3683 | downheap (timers, timercnt, HEAP0); |
3549 | } |
3684 | } |
3550 | else |
3685 | else |
… | |
… | |
3681 | |
3816 | |
3682 | mn_now = get_clock (); |
3817 | mn_now = get_clock (); |
3683 | |
3818 | |
3684 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
3819 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
3685 | /* interpolate in the meantime */ |
3820 | /* interpolate in the meantime */ |
3686 | if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
3821 | if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5))) |
3687 | { |
3822 | { |
3688 | ev_rt_now = rtmn_diff + mn_now; |
3823 | ev_rt_now = rtmn_diff + mn_now; |
3689 | return; |
3824 | return; |
3690 | } |
3825 | } |
3691 | |
3826 | |
… | |
… | |
3705 | ev_tstamp diff; |
3840 | ev_tstamp diff; |
3706 | rtmn_diff = ev_rt_now - mn_now; |
3841 | rtmn_diff = ev_rt_now - mn_now; |
3707 | |
3842 | |
3708 | diff = odiff - rtmn_diff; |
3843 | diff = odiff - rtmn_diff; |
3709 | |
3844 | |
3710 | if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
3845 | if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP))) |
3711 | return; /* all is well */ |
3846 | return; /* all is well */ |
3712 | |
3847 | |
3713 | ev_rt_now = ev_time (); |
3848 | ev_rt_now = ev_time (); |
3714 | mn_now = get_clock (); |
3849 | mn_now = get_clock (); |
3715 | now_floor = mn_now; |
3850 | now_floor = mn_now; |
… | |
… | |
3724 | else |
3859 | else |
3725 | #endif |
3860 | #endif |
3726 | { |
3861 | { |
3727 | ev_rt_now = ev_time (); |
3862 | ev_rt_now = ev_time (); |
3728 | |
3863 | |
3729 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
3864 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP))) |
3730 | { |
3865 | { |
3731 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
3866 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
3732 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
3867 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
3733 | #if EV_PERIODIC_ENABLE |
3868 | #if EV_PERIODIC_ENABLE |
3734 | periodics_reschedule (EV_A); |
3869 | periodics_reschedule (EV_A); |
… | |
… | |
3803 | |
3938 | |
3804 | /* remember old timestamp for io_blocktime calculation */ |
3939 | /* remember old timestamp for io_blocktime calculation */ |
3805 | ev_tstamp prev_mn_now = mn_now; |
3940 | ev_tstamp prev_mn_now = mn_now; |
3806 | |
3941 | |
3807 | /* update time to cancel out callback processing overhead */ |
3942 | /* update time to cancel out callback processing overhead */ |
3808 | time_update (EV_A_ 1e100); |
3943 | time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE)); |
3809 | |
3944 | |
3810 | /* from now on, we want a pipe-wake-up */ |
3945 | /* from now on, we want a pipe-wake-up */ |
3811 | pipe_write_wanted = 1; |
3946 | pipe_write_wanted = 1; |
3812 | |
3947 | |
3813 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
3948 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
3814 | |
3949 | |
3815 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3950 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3816 | { |
3951 | { |
3817 | waittime = MAX_BLOCKTIME; |
3952 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
3818 | |
3953 | |
3819 | if (timercnt) |
3954 | if (timercnt) |
3820 | { |
3955 | { |
3821 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3956 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3822 | if (waittime > to) waittime = to; |
3957 | if (waittime > to) waittime = to; |
… | |
… | |
3832 | |
3967 | |
3833 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3968 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3834 | if (ecb_expect_false (waittime < timeout_blocktime)) |
3969 | if (ecb_expect_false (waittime < timeout_blocktime)) |
3835 | waittime = timeout_blocktime; |
3970 | waittime = timeout_blocktime; |
3836 | |
3971 | |
3837 | /* at this point, we NEED to wait, so we have to ensure */ |
3972 | /* now there are two more special cases left, either we have |
3838 | /* to pass a minimum nonzero value to the backend */ |
3973 | * already-expired timers, so we should not sleep, or we have timers |
|
|
3974 | * that expire very soon, in which case we need to wait for a minimum |
|
|
3975 | * amount of time for some event loop backends. |
|
|
3976 | */ |
3839 | if (ecb_expect_false (waittime < backend_mintime)) |
3977 | if (ecb_expect_false (waittime < backend_mintime)) |
|
|
3978 | waittime = waittime <= EV_TS_CONST (0.) |
|
|
3979 | ? EV_TS_CONST (0.) |
3840 | waittime = backend_mintime; |
3980 | : backend_mintime; |
3841 | |
3981 | |
3842 | /* extra check because io_blocktime is commonly 0 */ |
3982 | /* extra check because io_blocktime is commonly 0 */ |
3843 | if (ecb_expect_false (io_blocktime)) |
3983 | if (ecb_expect_false (io_blocktime)) |
3844 | { |
3984 | { |
3845 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3985 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3846 | |
3986 | |
3847 | if (sleeptime > waittime - backend_mintime) |
3987 | if (sleeptime > waittime - backend_mintime) |
3848 | sleeptime = waittime - backend_mintime; |
3988 | sleeptime = waittime - backend_mintime; |
3849 | |
3989 | |
3850 | if (ecb_expect_true (sleeptime > 0.)) |
3990 | if (ecb_expect_true (sleeptime > EV_TS_CONST (0.))) |
3851 | { |
3991 | { |
3852 | ev_sleep (sleeptime); |
3992 | ev_sleep (sleeptime); |
3853 | waittime -= sleeptime; |
3993 | waittime -= sleeptime; |
3854 | } |
3994 | } |
3855 | } |
3995 | } |
… | |
… | |
3929 | } |
4069 | } |
3930 | |
4070 | |
3931 | void |
4071 | void |
3932 | ev_now_update (EV_P) EV_NOEXCEPT |
4072 | ev_now_update (EV_P) EV_NOEXCEPT |
3933 | { |
4073 | { |
3934 | time_update (EV_A_ 1e100); |
4074 | time_update (EV_A_ EV_TSTAMP_HUGE); |
3935 | } |
4075 | } |
3936 | |
4076 | |
3937 | void |
4077 | void |
3938 | ev_suspend (EV_P) EV_NOEXCEPT |
4078 | ev_suspend (EV_P) EV_NOEXCEPT |
3939 | { |
4079 | { |
… | |
… | |
4170 | } |
4310 | } |
4171 | |
4311 | |
4172 | ev_tstamp |
4312 | ev_tstamp |
4173 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
4313 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
4174 | { |
4314 | { |
4175 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
4315 | return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.)); |
4176 | } |
4316 | } |
4177 | |
4317 | |
4178 | #if EV_PERIODIC_ENABLE |
4318 | #if EV_PERIODIC_ENABLE |
4179 | ecb_noinline |
4319 | ecb_noinline |
4180 | void |
4320 | void |
4181 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4321 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4182 | { |
4322 | { |
4183 | if (ecb_expect_false (ev_is_active (w))) |
4323 | if (ecb_expect_false (ev_is_active (w))) |
4184 | return; |
4324 | return; |
|
|
4325 | |
|
|
4326 | #if EV_USE_TIMERFD |
|
|
4327 | if (timerfd == -2) |
|
|
4328 | evtimerfd_init (EV_A); |
|
|
4329 | #endif |
4185 | |
4330 | |
4186 | if (w->reschedule_cb) |
4331 | if (w->reschedule_cb) |
4187 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4332 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4188 | else if (w->interval) |
4333 | else if (w->interval) |
4189 | { |
4334 | { |