content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  package com.alibaba.jstorm.container;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.Set;
  
  import com.alibaba.jstorm.container.cgroup.CgroupCommon;
  
  public interface CgroupOperation {
  
      List<Hierarchy> getHierarchies();
  
      Set<SubSystem> getSubSystems();
  
      boolean enabled(SubSystemType subsystem);
  
      Hierarchy busy(SubSystemType subsystem);
  
      Hierarchy mounted(Hierarchy hierarchy);
  
      void mount(Hierarchy hierarchy) throws IOException;
  
      void umount(Hierarchy hierarchy) throws IOException;
  
      void create(CgroupCommon cgroup) throws SecurityException;
  
      void delete(CgroupCommon cgroup) throws IOException;
  
  }
  