1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.util; 18 19 /** 20 * Helper class that contains a strong reference to a VirtualRefBase native 21 * object. This will incStrong in the ctor, and decStrong in the finalizer 22 */ 23 public final class VirtualRefBasePtr { 24 private long mNativePtr; 25 26 public VirtualRefBasePtr(long ptr) { 27 mNativePtr = ptr; 28 nIncStrong(mNativePtr); 29 } 30 31 public long get() { 32 return mNativePtr; 33 } 34 35 public void release() { 36 if (mNativePtr != 0) { 37 nDecStrong(mNativePtr); 38 mNativePtr = 0; 39 } 40 } 41 42 @Override 43 protected void finalize() throws Throwable { 44 try { 45 release(); 46 } finally { 47 super.finalize(); 48 } 49 } 50 51 private static native void nIncStrong(long ptr); 52 private static native void nDecStrong(long ptr); 53 } 54
