1 | //===---------- Linux implementation of the POSIX clock_gettime function --===// |
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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 | |
15 | namespace LIBC_NAMESPACE_DECL { |
16 | |
17 | // TODO(michaelrj): Move this into time/linux with the other syscalls. |
18 | LLVM_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 |