KernelTimer.cpp

Go to the documentation of this file.

/*
 * Copyright (C) 2020 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include <FreeNOS/User.h>
#include <Log.h>
#include "KernelTimer.h"
#include <MemoryBlock.h>
 
Timer::Result KernelTimer::tick()
{
    Timer::Info info;
 
    const API::Result result = ProcessCtl(SELF, InfoTimer, (Address) &info);
    if (result != API::Success)
    {
        ERROR("failed to retrieve system timer info: result = " << (int) result);
        return Timer::IOError;
    }
 
    m_frequency = info.frequency;
    m_ticks     = info.ticks;
 
    return Timer::Success;
}