GPUResourceManager.h

/* Copyright 2016 Kristofer Björnson
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
 
#ifndef COM_DAFER45_TBTK_GPU_RESOURCE_MANAGER
#define COM_DAFER45_TBTK_GPU_RESOURCE_MANAGER
 
#include "Communicator.h"
 
#ifndef __APPLE__
#   include <omp.h>
#endif
 
namespace TBTK{
 
class GPUResourceManager : public Communicator{
public:
    int getNumDevices();
 
    int allocateDevice();
 
    void freeDevice(int device);
 
    static GPUResourceManager& getInstance();
private:
    GPUResourceManager();
 
    GPUResourceManager(const GPUResourceManager &gpuResourceManager) = delete;
 
    GPUResourceManager& operator=(const GPUResourceManager &gpuResourceManager) = delete;
 
    int numDevices;
 
    bool *busyDevices;
 
#ifndef __APPLE__
 
    omp_lock_t busyDevicesLock;
#endif
 
    void createDeviceTable();
 
    void destroyDeviceTable();
};
 
inline int GPUResourceManager::getNumDevices(){
    return numDevices;
}
 
};  //End of namespace TBTK
 
#endif