mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
84 lines
3.8 KiB
C
84 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2022 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/struct/timespec.h"
|
|
#include "libc/calls/struct/timespec.internal.h"
|
|
#include "libc/calls/struct/timeval.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/intrin/weaken.h"
|
|
#include "libc/runtime/syslib.internal.h"
|
|
#include "libc/sock/internal.h"
|
|
#include "libc/sysv/consts/clock.h"
|
|
#include "libc/sysv/consts/timer.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
#include "libc/thread/posixthread.internal.h"
|
|
#include "libc/thread/thread.h"
|
|
|
|
int sys_clock_nanosleep_xnu(int clock, int flags, const struct timespec *req,
|
|
struct timespec *rem) {
|
|
#ifdef __x86_64__
|
|
if (flags & TIMER_ABSTIME) {
|
|
struct timespec now;
|
|
sys_clock_gettime_xnu(clock, &now);
|
|
if (timespec_cmp(*req, now) > 0) {
|
|
struct timeval rel = timespec_totimeval(timespec_sub(*req, now));
|
|
return sys_select(0, 0, 0, 0, &rel);
|
|
} else {
|
|
return 0;
|
|
}
|
|
} else {
|
|
int rc;
|
|
struct timespec beg;
|
|
if (rem) sys_clock_gettime_xnu(CLOCK_REALTIME, &beg);
|
|
struct timeval rel = timespec_totimeval(*req); // rounds up
|
|
rc = sys_select(0, 0, 0, 0, &rel);
|
|
if (rc == -1 && rem && errno == EINTR) {
|
|
struct timespec end;
|
|
sys_clock_gettime_xnu(CLOCK_REALTIME, &end);
|
|
*rem = timespec_subz(*req, timespec_sub(end, beg));
|
|
}
|
|
return rc;
|
|
}
|
|
#else
|
|
long res;
|
|
struct timespec abs, now, rel;
|
|
if (_weaken(pthread_testcancel_np) && //
|
|
_weaken(pthread_testcancel_np)()) {
|
|
return ecanceled();
|
|
}
|
|
if (flags & TIMER_ABSTIME) {
|
|
abs = *req;
|
|
if (!(res = __syslib->__clock_gettime(clock, &now))) {
|
|
if (timespec_cmp(abs, now) > 0) {
|
|
rel = timespec_sub(abs, now);
|
|
res = __syslib->__nanosleep(&rel, 0);
|
|
}
|
|
}
|
|
} else {
|
|
res = __syslib->__nanosleep(req, rem);
|
|
}
|
|
if (res == -EINTR && //
|
|
(_weaken(pthread_testcancel_np) && //
|
|
_weaken(pthread_testcancel_np)())) {
|
|
return ecanceled();
|
|
}
|
|
return _sysret(res);
|
|
#endif
|
|
}
|