content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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.
   */
  
  package com.android.internal.util;
  
  import com.android.layoutlib.bridge.impl.DelegateManager;
  import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
  
  import android.util.LongSparseLongArray;
  
  /**
   * Delegate used to provide new implementation the native methods of {@link VirtualRefBasePtr}
   *
   * Through the layoutlib_create tool, the original native  methods of VirtualRefBasePtr have been
   * replaced by calls to methods of the same name in this delegate class.
   *
   */
  @SuppressWarnings("unused")
  public class VirtualRefBasePtr_Delegate {
      private static final DelegateManager<Object> sManager = new DelegateManager<>(Object.class);
      private static final LongSparseLongArray sRefCount = new LongSparseLongArray();
  
      @LayoutlibDelegate
      /*package*/ static synchronized void nIncStrong(long ptr) {
          long counter = sRefCount.get(ptr);
          sRefCount.put(ptr, ++counter);
      }
  
      @LayoutlibDelegate
      /*package*/ static synchronized void nDecStrong(long ptr) {
          long counter = sRefCount.get(ptr);
  
          if (counter > 1) {
              sRefCount.put(ptr, --counter);
          } else {
              sRefCount.delete(ptr);
              sManager.removeJavaReferenceFor(ptr);
          }
      }
  }
  