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/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <errno.h>
#include <cancel.h>
#include <sys/syscall.h>
#include "kernel-posix-cpu-timers.h"
#if defined(__UCLIBC_USE_TIME64__)
#include "internal/time64_helpers.h"
#endif
/* We can simply use the syscall. The CPU clocks are not supported
with this function. */
int
clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
struct timespec *rem)
{
INTERNAL_SYSCALL_DECL (err);
int r;
if (clock_id == CLOCK_THREAD_CPUTIME_ID)
return EINVAL;
if (clock_id == CLOCK_PROCESS_CPUTIME_ID)
clock_id = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED);
if (SINGLE_THREAD_P) {
#if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_nanosleep_time64)
struct __ts64_struct __req, __rem;
__req.tv_sec = req->tv_sec;
__req.tv_nsec = req->tv_nsec;
r = INTERNAL_SYSCALL (clock_nanosleep_time64, err, 4, clock_id, flags, &__req, &__rem);
if (rem) {
rem->tv_sec = (time_t) __rem.tv_sec;
rem->tv_nsec = __rem.tv_nsec;
}
#else
r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req, rem);
#endif
}
else
{
#ifdef __NEW_THREADS
int oldstate = LIBC_CANCEL_ASYNC ();
#if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_nanosleep_time64)
struct __ts64_struct __req, __rem;
__req.tv_sec = req->tv_sec;
__req.tv_nsec = req->tv_nsec;
r = INTERNAL_SYSCALL (clock_nanosleep_time64, err, 4, clock_id, flags, &__req, &__rem);
if (rem) {
rem->tv_sec = (time_t) __rem.tv_sec;
rem->tv_nsec = __rem.tv_nsec;
}
#else
r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req,
rem);
#endif
LIBC_CANCEL_RESET (oldstate);
#endif
}
return (INTERNAL_SYSCALL_ERROR_P (r, err)
? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
}
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