/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
* Copyright 2020 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

#ifndef OSGEARTH_MEMORY_H
#define OSGEARTH_MEMORY_H 1

#include <osgEarth/Common>
#include <cstdint>

namespace osgEarth { namespace Util
{
    class OSGEARTH_EXPORT Memory
    {
    public:
        /** Physical memory usage, in bytes, for the calling process. (aka working set or resident set) */
        static std::int64_t getProcessPhysicalUsage();

        /** Peak physical memory usage, in bytes, for the calling process since it started. */
        static std::int64_t getProcessPeakPhysicalUsage();

        /** Private bytes allocated solely to this process */
        static std::int64_t getProcessPrivateUsage();

        /** Maximum bytes allocated privately to thie process (peak pagefile usage) */
        static std::int64_t getProcessPeakPrivateUsage();

    private:
        // Not creatable.
        Memory() { }
    };
} }


#endif // OSGEARTH_MEMORY_H