b98c1906d6
Switch use of errno in src/time and test/src/time to libc_errno. Reviewed By: sivachandra Differential Revision: https://reviews.llvm.org/D145192
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
//===---------- Linux implementation of the POSIX clock_gettime function --===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/time/clock_gettime.h"
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#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
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#include "src/__support/common.h"
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#include "src/errno/libc_errno.h"
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#include <sys/syscall.h> // For syscall numbers.
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#include <time.h>
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namespace __llvm_libc {
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LLVM_LIBC_FUNCTION(int, clock_gettime,
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(clockid_t clockid, struct timespec *tp)) {
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long ret_val =
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__llvm_libc::syscall_impl(SYS_clock_gettime, static_cast<long>(clockid),
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reinterpret_cast<long>(tp));
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// A negative return value indicates an error with the magnitude of the
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// value being the error code.
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if (ret_val < 0) {
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libc_errno = -ret_val;
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return -1;
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}
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return 0;
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}
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} // namespace __llvm_libc
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