… | |
… | |
117 | # define EV_USE_EPOLL 0 |
117 | # define EV_USE_EPOLL 0 |
118 | # endif |
118 | # endif |
119 | |
119 | |
120 | # if HAVE_LINUX_AIO_ABI_H |
120 | # if HAVE_LINUX_AIO_ABI_H |
121 | # ifndef EV_USE_LINUXAIO |
121 | # ifndef EV_USE_LINUXAIO |
122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
122 | # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */ |
123 | # endif |
123 | # endif |
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 |
… | |
… | |
326 | # define EV_USE_PORT 0 |
344 | # define EV_USE_PORT 0 |
327 | #endif |
345 | #endif |
328 | |
346 | |
329 | #ifndef EV_USE_LINUXAIO |
347 | #ifndef EV_USE_LINUXAIO |
330 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
348 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
331 | # define EV_USE_LINUXAIO 1 |
349 | # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */ |
332 | # else |
350 | # else |
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 |
… | |
… | |
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 |
549 | #define EV_TS_TO_MS(a) a * 1e3 + 0.9999 |
595 | # define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999 |
550 | #define EV_TS_FROM_US(us) us * 1e-6 |
596 | # define EV_TS_FROM_USEC(us) us * 1e-6 |
551 | #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) |
552 | #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) |
553 | #define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6) |
599 | # define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6) |
554 | #define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9) |
600 | # define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9) |
|
|
601 | #endif |
555 | |
602 | |
556 | /* 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 */ |
557 | /* ECB.H BEGIN */ |
604 | /* ECB.H BEGIN */ |
558 | /* |
605 | /* |
559 | * libecb - http://software.schmorp.de/pkg/libecb |
606 | * libecb - http://software.schmorp.de/pkg/libecb |
… | |
… | |
1611 | * our syscalls return < 0, not == -1, on error. which is good |
1658 | * our syscalls return < 0, not == -1, on error. which is good |
1612 | * enough for linux aio. |
1659 | * enough for linux aio. |
1613 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1660 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1614 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1661 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1615 | */ |
1662 | */ |
1616 | #if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__ |
1663 | #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE |
1617 | /* the costly errno access probably kills this for size optimisation */ |
1664 | /* the costly errno access probably kills this for size optimisation */ |
1618 | |
1665 | |
1619 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1666 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1620 | ({ \ |
1667 | ({ \ |
1621 | long res; \ |
1668 | long res; \ |
… | |
… | |
1965 | static struct ev_loop default_loop_struct; |
2012 | static struct ev_loop default_loop_struct; |
1966 | 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 */ |
1967 | |
2014 | |
1968 | #else |
2015 | #else |
1969 | |
2016 | |
1970 | 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 */ |
1971 | #define VAR(name,decl) static decl; |
2018 | #define VAR(name,decl) static decl; |
1972 | #include "ev_vars.h" |
2019 | #include "ev_vars.h" |
1973 | #undef VAR |
2020 | #undef VAR |
1974 | |
2021 | |
1975 | static int ev_default_loop_ptr; |
2022 | static int ev_default_loop_ptr; |
… | |
… | |
2001 | clock_gettime (CLOCK_REALTIME, &ts); |
2048 | clock_gettime (CLOCK_REALTIME, &ts); |
2002 | return EV_TS_GET (ts); |
2049 | return EV_TS_GET (ts); |
2003 | } |
2050 | } |
2004 | #endif |
2051 | #endif |
2005 | |
2052 | |
|
|
2053 | { |
2006 | struct timeval tv; |
2054 | struct timeval tv; |
2007 | gettimeofday (&tv, 0); |
2055 | gettimeofday (&tv, 0); |
2008 | return EV_TV_GET (tv); |
2056 | return EV_TV_GET (tv); |
|
|
2057 | } |
2009 | } |
2058 | } |
2010 | #endif |
2059 | #endif |
2011 | |
2060 | |
2012 | inline_size ev_tstamp |
2061 | inline_size ev_tstamp |
2013 | get_clock (void) |
2062 | get_clock (void) |
… | |
… | |
2033 | #endif |
2082 | #endif |
2034 | |
2083 | |
2035 | void |
2084 | void |
2036 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
2085 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
2037 | { |
2086 | { |
2038 | if (delay > 0.) |
2087 | if (delay > EV_TS_CONST (0.)) |
2039 | { |
2088 | { |
2040 | #if EV_USE_NANOSLEEP |
2089 | #if EV_USE_NANOSLEEP |
2041 | struct timespec ts; |
2090 | struct timespec ts; |
2042 | |
2091 | |
2043 | EV_TS_SET (ts, delay); |
2092 | EV_TS_SET (ts, delay); |
2044 | nanosleep (&ts, 0); |
2093 | nanosleep (&ts, 0); |
2045 | #elif defined _WIN32 |
2094 | #elif defined _WIN32 |
2046 | /* maybe this should round up, as ms is very low resolution */ |
2095 | /* maybe this should round up, as ms is very low resolution */ |
2047 | /* compared to select (µs) or nanosleep (ns) */ |
2096 | /* compared to select (µs) or nanosleep (ns) */ |
2048 | Sleep ((unsigned long)(EV_TS_TO_MS (delay))); |
2097 | Sleep ((unsigned long)(EV_TS_TO_MSEC (delay))); |
2049 | #else |
2098 | #else |
2050 | struct timeval tv; |
2099 | struct timeval tv; |
2051 | |
2100 | |
2052 | /* 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 */ |
2053 | /* something not guaranteed by newer posix versions, but guaranteed */ |
2102 | /* something not guaranteed by newer posix versions, but guaranteed */ |
… | |
… | |
2213 | inline_size void |
2262 | inline_size void |
2214 | fd_reify (EV_P) |
2263 | fd_reify (EV_P) |
2215 | { |
2264 | { |
2216 | int i; |
2265 | int i; |
2217 | |
2266 | |
|
|
2267 | /* most backends do not modify the fdchanges list in backend_modfiy. |
|
|
2268 | * except io_uring, which has fixed-size buffers which might force us |
|
|
2269 | * to handle events in backend_modify, causing fdchangesd to be amended, |
|
|
2270 | * which could result in an endless loop. |
|
|
2271 | * to avoid this, we do not dynamically handle fds that were added |
|
|
2272 | * during fd_reify. that menas thast for those backends, fdchangecnt |
|
|
2273 | * might be non-zero during poll, which must cause them to not block. |
|
|
2274 | * to not put too much of a burden on other backends, this detail |
|
|
2275 | * needs to be handled in the backend. |
|
|
2276 | */ |
|
|
2277 | int changecnt = fdchangecnt; |
|
|
2278 | |
2218 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2279 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2219 | for (i = 0; i < fdchangecnt; ++i) |
2280 | for (i = 0; i < changecnt; ++i) |
2220 | { |
2281 | { |
2221 | int fd = fdchanges [i]; |
2282 | int fd = fdchanges [i]; |
2222 | ANFD *anfd = anfds + fd; |
2283 | ANFD *anfd = anfds + fd; |
2223 | |
2284 | |
2224 | if (anfd->reify & EV__IOFDSET && anfd->head) |
2285 | if (anfd->reify & EV__IOFDSET && anfd->head) |
… | |
… | |
2238 | } |
2299 | } |
2239 | } |
2300 | } |
2240 | } |
2301 | } |
2241 | #endif |
2302 | #endif |
2242 | |
2303 | |
2243 | for (i = 0; i < fdchangecnt; ++i) |
2304 | for (i = 0; i < changecnt; ++i) |
2244 | { |
2305 | { |
2245 | int fd = fdchanges [i]; |
2306 | int fd = fdchanges [i]; |
2246 | ANFD *anfd = anfds + fd; |
2307 | ANFD *anfd = anfds + fd; |
2247 | ev_io *w; |
2308 | ev_io *w; |
2248 | |
2309 | |
… | |
… | |
2264 | |
2325 | |
2265 | if (o_reify & EV__IOFDSET) |
2326 | if (o_reify & EV__IOFDSET) |
2266 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2327 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2267 | } |
2328 | } |
2268 | |
2329 | |
|
|
2330 | /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added. |
|
|
2331 | * this is a rare case (see beginning comment in this function), so we copy them to the |
|
|
2332 | * front and hope the backend handles this case. |
|
|
2333 | */ |
|
|
2334 | if (ecb_expect_false (fdchangecnt != changecnt)) |
|
|
2335 | memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges)); |
|
|
2336 | |
2269 | fdchangecnt = 0; |
2337 | fdchangecnt -= changecnt; |
2270 | } |
2338 | } |
2271 | |
2339 | |
2272 | /* something about the given fd changed */ |
2340 | /* something about the given fd changed */ |
2273 | inline_size |
2341 | inline_size |
2274 | void |
2342 | void |
… | |
… | |
2826 | |
2894 | |
2827 | #endif |
2895 | #endif |
2828 | |
2896 | |
2829 | /*****************************************************************************/ |
2897 | /*****************************************************************************/ |
2830 | |
2898 | |
|
|
2899 | #if EV_USE_TIMERFD |
|
|
2900 | |
|
|
2901 | static void periodics_reschedule (EV_P); |
|
|
2902 | |
|
|
2903 | static void |
|
|
2904 | timerfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2905 | { |
|
|
2906 | struct itimerspec its = { 0 }; |
|
|
2907 | |
|
|
2908 | /* since we can't easily come zup with a (portable) maximum value of time_t, |
|
|
2909 | * we wake up once per month, which hopefully is rare enough to not |
|
|
2910 | * be a problem. */ |
|
|
2911 | its.it_value.tv_sec = ev_rt_now + 86400 * 30; |
|
|
2912 | timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0); |
|
|
2913 | |
|
|
2914 | ev_rt_now = ev_time (); |
|
|
2915 | /* periodics_reschedule only needs ev_rt_now */ |
|
|
2916 | /* but maybe in the future we want the full treatment. */ |
|
|
2917 | /* |
|
|
2918 | now_floor = EV_TS_CONST (0.); |
|
|
2919 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
2920 | */ |
|
|
2921 | periodics_reschedule (EV_A); |
|
|
2922 | } |
|
|
2923 | |
|
|
2924 | ecb_noinline ecb_cold |
|
|
2925 | static void |
|
|
2926 | evtimerfd_init (EV_P) |
|
|
2927 | { |
|
|
2928 | if (!ev_is_active (&timerfd_w)) |
|
|
2929 | { |
|
|
2930 | timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC); |
|
|
2931 | |
|
|
2932 | if (timerfd >= 0) |
|
|
2933 | { |
|
|
2934 | fd_intern (timerfd); /* just to be sure */ |
|
|
2935 | |
|
|
2936 | ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ); |
|
|
2937 | ev_set_priority (&timerfd_w, EV_MINPRI); |
|
|
2938 | ev_io_start (EV_A_ &timerfd_w); |
|
|
2939 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2940 | |
|
|
2941 | /* (re-) arm timer */ |
|
|
2942 | timerfdcb (EV_A_ 0, 0); |
|
|
2943 | } |
|
|
2944 | } |
|
|
2945 | } |
|
|
2946 | |
|
|
2947 | #endif |
|
|
2948 | |
|
|
2949 | /*****************************************************************************/ |
|
|
2950 | |
2831 | #if EV_USE_IOCP |
2951 | #if EV_USE_IOCP |
2832 | # include "ev_iocp.c" |
2952 | # include "ev_iocp.c" |
2833 | #endif |
2953 | #endif |
2834 | #if EV_USE_PORT |
2954 | #if EV_USE_PORT |
2835 | # include "ev_port.c" |
2955 | # include "ev_port.c" |
… | |
… | |
2881 | unsigned int |
3001 | unsigned int |
2882 | ev_supported_backends (void) EV_NOEXCEPT |
3002 | ev_supported_backends (void) EV_NOEXCEPT |
2883 | { |
3003 | { |
2884 | unsigned int flags = 0; |
3004 | unsigned int flags = 0; |
2885 | |
3005 | |
2886 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
3006 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2887 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
3007 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
2888 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
3008 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2889 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
3009 | if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO; |
2890 | if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING; |
3010 | if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */ |
2891 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
3011 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2892 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
3012 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
2893 | |
3013 | |
2894 | return flags; |
3014 | return flags; |
2895 | } |
3015 | } |
2896 | |
3016 | |
2897 | ecb_cold |
3017 | ecb_cold |
2898 | unsigned int |
3018 | unsigned int |
… | |
… | |
3067 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3187 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3068 | #endif |
3188 | #endif |
3069 | #if EV_USE_SIGNALFD |
3189 | #if EV_USE_SIGNALFD |
3070 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3190 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3071 | #endif |
3191 | #endif |
|
|
3192 | #if EV_USE_TIMERFD |
|
|
3193 | timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2; |
|
|
3194 | #endif |
3072 | |
3195 | |
3073 | if (!(flags & EVBACKEND_MASK)) |
3196 | if (!(flags & EVBACKEND_MASK)) |
3074 | flags |= ev_recommended_backends (); |
3197 | flags |= ev_recommended_backends (); |
3075 | |
3198 | |
3076 | #if EV_USE_IOCP |
3199 | #if EV_USE_IOCP |
… | |
… | |
3147 | } |
3270 | } |
3148 | |
3271 | |
3149 | #if EV_USE_SIGNALFD |
3272 | #if EV_USE_SIGNALFD |
3150 | if (ev_is_active (&sigfd_w)) |
3273 | if (ev_is_active (&sigfd_w)) |
3151 | close (sigfd); |
3274 | close (sigfd); |
|
|
3275 | #endif |
|
|
3276 | |
|
|
3277 | #if EV_USE_TIMERFD |
|
|
3278 | if (ev_is_active (&timerfd_w)) |
|
|
3279 | close (timerfd); |
3152 | #endif |
3280 | #endif |
3153 | |
3281 | |
3154 | #if EV_USE_INOTIFY |
3282 | #if EV_USE_INOTIFY |
3155 | if (fs_fd >= 0) |
3283 | if (fs_fd >= 0) |
3156 | close (fs_fd); |
3284 | close (fs_fd); |
… | |
… | |
3249 | #endif |
3377 | #endif |
3250 | #if EV_USE_INOTIFY |
3378 | #if EV_USE_INOTIFY |
3251 | infy_fork (EV_A); |
3379 | infy_fork (EV_A); |
3252 | #endif |
3380 | #endif |
3253 | |
3381 | |
|
|
3382 | if (postfork != 2) |
|
|
3383 | { |
|
|
3384 | #if EV_USE_SIGNALFD |
|
|
3385 | /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */ |
|
|
3386 | #endif |
|
|
3387 | |
|
|
3388 | #if EV_USE_TIMERFD |
|
|
3389 | if (ev_is_active (&timerfd_w)) |
|
|
3390 | { |
|
|
3391 | ev_ref (EV_A); |
|
|
3392 | ev_io_stop (EV_A_ &timerfd_w); |
|
|
3393 | |
|
|
3394 | close (timerfd); |
|
|
3395 | timerfd = -2; |
|
|
3396 | |
|
|
3397 | evtimerfd_init (EV_A); |
|
|
3398 | /* reschedule periodics, in case we missed something */ |
|
|
3399 | ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM); |
|
|
3400 | } |
|
|
3401 | #endif |
|
|
3402 | |
3254 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3403 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3255 | if (ev_is_active (&pipe_w) && postfork != 2) |
3404 | if (ev_is_active (&pipe_w)) |
3256 | { |
3405 | { |
3257 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3406 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3258 | |
3407 | |
3259 | ev_ref (EV_A); |
3408 | ev_ref (EV_A); |
3260 | ev_io_stop (EV_A_ &pipe_w); |
3409 | ev_io_stop (EV_A_ &pipe_w); |
3261 | |
3410 | |
3262 | if (evpipe [0] >= 0) |
3411 | if (evpipe [0] >= 0) |
3263 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3412 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3264 | |
3413 | |
3265 | evpipe_init (EV_A); |
3414 | evpipe_init (EV_A); |
3266 | /* iterate over everything, in case we missed something before */ |
3415 | /* iterate over everything, in case we missed something before */ |
3267 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3416 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3417 | } |
|
|
3418 | #endif |
3268 | } |
3419 | } |
3269 | #endif |
|
|
3270 | |
3420 | |
3271 | postfork = 0; |
3421 | postfork = 0; |
3272 | } |
3422 | } |
3273 | |
3423 | |
3274 | #if EV_MULTIPLICITY |
3424 | #if EV_MULTIPLICITY |
… | |
… | |
3544 | { |
3694 | { |
3545 | ev_at (w) += w->repeat; |
3695 | ev_at (w) += w->repeat; |
3546 | if (ev_at (w) < mn_now) |
3696 | if (ev_at (w) < mn_now) |
3547 | ev_at (w) = mn_now; |
3697 | ev_at (w) = mn_now; |
3548 | |
3698 | |
3549 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
3699 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.))); |
3550 | |
3700 | |
3551 | ANHE_at_cache (timers [HEAP0]); |
3701 | ANHE_at_cache (timers [HEAP0]); |
3552 | downheap (timers, timercnt, HEAP0); |
3702 | downheap (timers, timercnt, HEAP0); |
3553 | } |
3703 | } |
3554 | else |
3704 | else |
… | |
… | |
3685 | |
3835 | |
3686 | mn_now = get_clock (); |
3836 | mn_now = get_clock (); |
3687 | |
3837 | |
3688 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
3838 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
3689 | /* interpolate in the meantime */ |
3839 | /* interpolate in the meantime */ |
3690 | if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
3840 | if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5))) |
3691 | { |
3841 | { |
3692 | ev_rt_now = rtmn_diff + mn_now; |
3842 | ev_rt_now = rtmn_diff + mn_now; |
3693 | return; |
3843 | return; |
3694 | } |
3844 | } |
3695 | |
3845 | |
… | |
… | |
3709 | ev_tstamp diff; |
3859 | ev_tstamp diff; |
3710 | rtmn_diff = ev_rt_now - mn_now; |
3860 | rtmn_diff = ev_rt_now - mn_now; |
3711 | |
3861 | |
3712 | diff = odiff - rtmn_diff; |
3862 | diff = odiff - rtmn_diff; |
3713 | |
3863 | |
3714 | if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
3864 | if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP))) |
3715 | return; /* all is well */ |
3865 | return; /* all is well */ |
3716 | |
3866 | |
3717 | ev_rt_now = ev_time (); |
3867 | ev_rt_now = ev_time (); |
3718 | mn_now = get_clock (); |
3868 | mn_now = get_clock (); |
3719 | now_floor = mn_now; |
3869 | now_floor = mn_now; |
… | |
… | |
3728 | else |
3878 | else |
3729 | #endif |
3879 | #endif |
3730 | { |
3880 | { |
3731 | ev_rt_now = ev_time (); |
3881 | ev_rt_now = ev_time (); |
3732 | |
3882 | |
3733 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
3883 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP))) |
3734 | { |
3884 | { |
3735 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
3885 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
3736 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
3886 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
3737 | #if EV_PERIODIC_ENABLE |
3887 | #if EV_PERIODIC_ENABLE |
3738 | periodics_reschedule (EV_A); |
3888 | periodics_reschedule (EV_A); |
… | |
… | |
3807 | |
3957 | |
3808 | /* remember old timestamp for io_blocktime calculation */ |
3958 | /* remember old timestamp for io_blocktime calculation */ |
3809 | ev_tstamp prev_mn_now = mn_now; |
3959 | ev_tstamp prev_mn_now = mn_now; |
3810 | |
3960 | |
3811 | /* update time to cancel out callback processing overhead */ |
3961 | /* update time to cancel out callback processing overhead */ |
3812 | time_update (EV_A_ 1e100); |
3962 | time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE)); |
3813 | |
3963 | |
3814 | /* from now on, we want a pipe-wake-up */ |
3964 | /* from now on, we want a pipe-wake-up */ |
3815 | pipe_write_wanted = 1; |
3965 | pipe_write_wanted = 1; |
3816 | |
3966 | |
3817 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
3967 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
3818 | |
3968 | |
3819 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3969 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3820 | { |
3970 | { |
3821 | waittime = MAX_BLOCKTIME; |
3971 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
3822 | |
3972 | |
3823 | if (timercnt) |
3973 | if (timercnt) |
3824 | { |
3974 | { |
3825 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3975 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3826 | if (waittime > to) waittime = to; |
3976 | if (waittime > to) waittime = to; |
… | |
… | |
3836 | |
3986 | |
3837 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3987 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3838 | if (ecb_expect_false (waittime < timeout_blocktime)) |
3988 | if (ecb_expect_false (waittime < timeout_blocktime)) |
3839 | waittime = timeout_blocktime; |
3989 | waittime = timeout_blocktime; |
3840 | |
3990 | |
3841 | /* at this point, we NEED to wait, so we have to ensure */ |
3991 | /* now there are two more special cases left, either we have |
3842 | /* to pass a minimum nonzero value to the backend */ |
3992 | * already-expired timers, so we should not sleep, or we have timers |
|
|
3993 | * that expire very soon, in which case we need to wait for a minimum |
|
|
3994 | * amount of time for some event loop backends. |
|
|
3995 | */ |
3843 | if (ecb_expect_false (waittime < backend_mintime)) |
3996 | if (ecb_expect_false (waittime < backend_mintime)) |
|
|
3997 | waittime = waittime <= EV_TS_CONST (0.) |
|
|
3998 | ? EV_TS_CONST (0.) |
3844 | waittime = backend_mintime; |
3999 | : backend_mintime; |
3845 | |
4000 | |
3846 | /* extra check because io_blocktime is commonly 0 */ |
4001 | /* extra check because io_blocktime is commonly 0 */ |
3847 | if (ecb_expect_false (io_blocktime)) |
4002 | if (ecb_expect_false (io_blocktime)) |
3848 | { |
4003 | { |
3849 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
4004 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3850 | |
4005 | |
3851 | if (sleeptime > waittime - backend_mintime) |
4006 | if (sleeptime > waittime - backend_mintime) |
3852 | sleeptime = waittime - backend_mintime; |
4007 | sleeptime = waittime - backend_mintime; |
3853 | |
4008 | |
3854 | if (ecb_expect_true (sleeptime > 0.)) |
4009 | if (ecb_expect_true (sleeptime > EV_TS_CONST (0.))) |
3855 | { |
4010 | { |
3856 | ev_sleep (sleeptime); |
4011 | ev_sleep (sleeptime); |
3857 | waittime -= sleeptime; |
4012 | waittime -= sleeptime; |
3858 | } |
4013 | } |
3859 | } |
4014 | } |
… | |
… | |
3933 | } |
4088 | } |
3934 | |
4089 | |
3935 | void |
4090 | void |
3936 | ev_now_update (EV_P) EV_NOEXCEPT |
4091 | ev_now_update (EV_P) EV_NOEXCEPT |
3937 | { |
4092 | { |
3938 | time_update (EV_A_ 1e100); |
4093 | time_update (EV_A_ EV_TSTAMP_HUGE); |
3939 | } |
4094 | } |
3940 | |
4095 | |
3941 | void |
4096 | void |
3942 | ev_suspend (EV_P) EV_NOEXCEPT |
4097 | ev_suspend (EV_P) EV_NOEXCEPT |
3943 | { |
4098 | { |
… | |
… | |
4174 | } |
4329 | } |
4175 | |
4330 | |
4176 | ev_tstamp |
4331 | ev_tstamp |
4177 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
4332 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
4178 | { |
4333 | { |
4179 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
4334 | return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.)); |
4180 | } |
4335 | } |
4181 | |
4336 | |
4182 | #if EV_PERIODIC_ENABLE |
4337 | #if EV_PERIODIC_ENABLE |
4183 | ecb_noinline |
4338 | ecb_noinline |
4184 | void |
4339 | void |
4185 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4340 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4186 | { |
4341 | { |
4187 | if (ecb_expect_false (ev_is_active (w))) |
4342 | if (ecb_expect_false (ev_is_active (w))) |
4188 | return; |
4343 | return; |
|
|
4344 | |
|
|
4345 | #if EV_USE_TIMERFD |
|
|
4346 | if (timerfd == -2) |
|
|
4347 | evtimerfd_init (EV_A); |
|
|
4348 | #endif |
4189 | |
4349 | |
4190 | if (w->reschedule_cb) |
4350 | if (w->reschedule_cb) |
4191 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4351 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4192 | else if (w->interval) |
4352 | else if (w->interval) |
4193 | { |
4353 | { |
… | |
… | |
4935 | ev_run (EV_A_ EVRUN_NOWAIT); |
5095 | ev_run (EV_A_ EVRUN_NOWAIT); |
4936 | } |
5096 | } |
4937 | } |
5097 | } |
4938 | } |
5098 | } |
4939 | |
5099 | |
|
|
5100 | #if EV_FORK_ENABLE |
4940 | static void |
5101 | static void |
4941 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
5102 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
4942 | { |
5103 | { |
4943 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
5104 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
4944 | |
5105 | |
… | |
… | |
4951 | ev_run (EV_A_ EVRUN_NOWAIT); |
5112 | ev_run (EV_A_ EVRUN_NOWAIT); |
4952 | } |
5113 | } |
4953 | |
5114 | |
4954 | ev_embed_start (EV_A_ w); |
5115 | ev_embed_start (EV_A_ w); |
4955 | } |
5116 | } |
|
|
5117 | #endif |
4956 | |
5118 | |
4957 | #if 0 |
5119 | #if 0 |
4958 | static void |
5120 | static void |
4959 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
5121 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
4960 | { |
5122 | { |
… | |
… | |
4981 | |
5143 | |
4982 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
5144 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
4983 | ev_set_priority (&w->prepare, EV_MINPRI); |
5145 | ev_set_priority (&w->prepare, EV_MINPRI); |
4984 | ev_prepare_start (EV_A_ &w->prepare); |
5146 | ev_prepare_start (EV_A_ &w->prepare); |
4985 | |
5147 | |
|
|
5148 | #if EV_FORK_ENABLE |
4986 | ev_fork_init (&w->fork, embed_fork_cb); |
5149 | ev_fork_init (&w->fork, embed_fork_cb); |
4987 | ev_fork_start (EV_A_ &w->fork); |
5150 | ev_fork_start (EV_A_ &w->fork); |
|
|
5151 | #endif |
4988 | |
5152 | |
4989 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
5153 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
4990 | |
5154 | |
4991 | ev_start (EV_A_ (W)w, 1); |
5155 | ev_start (EV_A_ (W)w, 1); |
4992 | |
5156 | |
… | |
… | |
5002 | |
5166 | |
5003 | EV_FREQUENT_CHECK; |
5167 | EV_FREQUENT_CHECK; |
5004 | |
5168 | |
5005 | ev_io_stop (EV_A_ &w->io); |
5169 | ev_io_stop (EV_A_ &w->io); |
5006 | ev_prepare_stop (EV_A_ &w->prepare); |
5170 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
5171 | #if EV_FORK_ENABLE |
5007 | ev_fork_stop (EV_A_ &w->fork); |
5172 | ev_fork_stop (EV_A_ &w->fork); |
|
|
5173 | #endif |
5008 | |
5174 | |
5009 | ev_stop (EV_A_ (W)w); |
5175 | ev_stop (EV_A_ (W)w); |
5010 | |
5176 | |
5011 | EV_FREQUENT_CHECK; |
5177 | EV_FREQUENT_CHECK; |
5012 | } |
5178 | } |