genode/repos/base/src/lib/base/raw_output.cc
Norman Feske 2030ae678e Supplement base/log.h with raw output function
This patch introduces the Genode::raw function that prints output
directly via a low-level kernel mechanism, if available.

On base-linux, it replaces the former 'raw_write_str' function.
On base-hw, it replaces the former kernel/log.h interface.

Fixes #2012
2016-06-22 12:21:42 +02:00

36 lines
813 B
C++

/*
* \brief Access to raw output back end
* \author Norman Feske
* \date 2016-06-16
*/
/*
* Copyright (C) 2016 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
/* Genode includes */
#include <base/log.h>
/* base-internal includes */
#include <base/internal/unmanaged_singleton.h>
#include <base/internal/output.h>
#include <base/internal/raw_write_string.h>
using namespace Genode;
Output &Raw::_output()
{
struct Write_fn { void operator () (char const *s) { raw_write_string(s); } };
typedef Buffered_output<256, Write_fn> Buffered_raw_output;
static Buffered_raw_output *buffered_raw_output =
unmanaged_singleton<Buffered_raw_output>(Write_fn());
return *buffered_raw_output;
}