libc/src/__support/OSUtil/linux/io.h

   1 //===-------------- Linux implementation of IO utils ------------*- C++ -*-===//
   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 #ifndef LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_IO_H
  10 #define LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_IO_H
  11
  12 #include "src/__support/CPP/string_view.h"
  13 #include "syscall.h" // For internal syscall function.
  14
  15 #include <sys/syscall.h> // For syscall numbers.
  16
  17 namespace LIBC_NAMESPACE {
  18
  19 LIBC_INLINE void write_to_stderr(cpp::string_view msg) {
  20   LIBC_NAMESPACE::syscall_impl<long>(SYS_write, 2 /* stderr */, msg.data(),
  21                                      msg.size());
  22 }
  23
  24 } // namespace LIBC_NAMESPACE
  25
  26 #endif // LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_IO_H