33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
//===-- Linux implementation of the time function -------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "hdr/time_macros.h"
|
|
#include "src/__support/common.h"
|
|
#include "src/__support/macros/config.h"
|
|
#include "src/__support/time/linux/clock_gettime.h"
|
|
#include "src/errno/libc_errno.h"
|
|
#include "src/time/time_func.h"
|
|
|
|
namespace LIBC_NAMESPACE_DECL {
|
|
|
|
LLVM_LIBC_FUNCTION(time_t, time, (time_t * tp)) {
|
|
// TODO: Use the Linux VDSO to fetch the time and avoid the syscall.
|
|
struct timespec ts;
|
|
auto result = internal::clock_gettime(CLOCK_REALTIME, &ts);
|
|
if (!result.has_value()) {
|
|
libc_errno = result.error();
|
|
return -1;
|
|
}
|
|
|
|
if (tp != nullptr)
|
|
*tp = time_t(ts.tv_sec);
|
|
return time_t(ts.tv_sec);
|
|
}
|
|
|
|
} // namespace LIBC_NAMESPACE_DECL
|