1//===---------- Linux implementation of the POSIX clock_gettime function --===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/time/clock_gettime.h"
10#include "src/__support/common.h"
11#include "src/__support/libc_errno.h"
12#include "src/__support/macros/config.h"
13#include "src/__support/time/clock_gettime.h"
14
15namespace LIBC_NAMESPACE_DECL {
16
17// TODO(michaelrj): Move this into time/linux with the other syscalls.
18LLVM_LIBC_FUNCTION(int, clock_gettime,
19 (clockid_t clockid, struct timespec *ts)) {
20 auto result = internal::clock_gettime(clockid, ts);
21
22 // A negative return value indicates an error with the magnitude of the
23 // value being the error code.
24 if (!result.has_value()) {
25 libc_errno = result.error();
26 return -1;
27 }
28 return 0;
29}
30
31} // namespace LIBC_NAMESPACE_DECL
32

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source code of libc/src/time/linux/clock_gettime.cpp