deeplearning4j/deeplearning4j

/* ******************************************************************************
 *
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://www.apache.org/licenses/LICENSE-2.0.
 *
 *  See the NOTICE file distributed with this work for additional
 *  information regarding copyright ownership.
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

//
// @author raver119@gmail.com
//

#ifndef LIBND4J_AFFINITYMANAGER_H
#define LIBND4J_AFFINITYMANAGER_H

#include <system/common.h>

#include <atomic>
#include <mutex>

namespace sd {
class SD_LIB_EXPORT AffinityManager {
 private:
  static std::atomic<int> _lastDevice;
  static int _numberOfDevices;
  static std::mutex _currentMutex;
  static std::mutex _numberMutex;

 public:
  static int currentNativeDeviceId();
  static int currentDeviceId();
  static int numberOfDevices();
  static void setCurrentDevice(int deviceId);
  static void setCurrentNativeDevice(int deviceId);
};
}  // namespace sd

#endif  // DEV_TESTS_AFFINITYMANAGER_H