19fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck/* 29fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * Copyright (C) 2014 The Android Open Source Project 39fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * 49fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * Licensed under the Apache License, Version 2.0 (the "License"); 59fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * you may not use this file except in compliance with the License. 69fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * You may obtain a copy of the License at 79fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * 89fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * http://www.apache.org/licenses/LICENSE-2.0 99fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * 109fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * Unless required by applicable law or agreed to in writing, software 119fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * distributed under the License is distributed on an "AS IS" BASIS, 129fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * See the License for the specific language governing permissions and 149fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * limitations under the License. 159fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck */ 169fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 179fa4071c4768c63902c6a74a4b480b51a8b95d43John Reckpackage com.android.internal.util; 189fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 199fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck/** 209fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * Helper class that contains a strong reference to a VirtualRefBase native 219fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck * object. This will incStrong in the ctor, and decStrong in the finalizer 229fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck */ 239fa4071c4768c63902c6a74a4b480b51a8b95d43John Reckpublic final class VirtualRefBasePtr { 249fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck private long mNativePtr; 259fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 269fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck public VirtualRefBasePtr(long ptr) { 279fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck mNativePtr = ptr; 289fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck nIncStrong(mNativePtr); 299fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck } 309fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 319fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck public long get() { 329fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck return mNativePtr; 339fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck } 349fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 35d72e0a339b54af0c4e731513bbad120dff694723John Reck public void release() { 36d72e0a339b54af0c4e731513bbad120dff694723John Reck if (mNativePtr != 0) { 37d72e0a339b54af0c4e731513bbad120dff694723John Reck nDecStrong(mNativePtr); 38d72e0a339b54af0c4e731513bbad120dff694723John Reck mNativePtr = 0; 39d72e0a339b54af0c4e731513bbad120dff694723John Reck } 40d72e0a339b54af0c4e731513bbad120dff694723John Reck } 41d72e0a339b54af0c4e731513bbad120dff694723John Reck 429fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck @Override 439fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck protected void finalize() throws Throwable { 449fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck try { 45d72e0a339b54af0c4e731513bbad120dff694723John Reck release(); 469fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck } finally { 479fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck super.finalize(); 489fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck } 499fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck } 509fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck 519fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck private static native void nIncStrong(long ptr); 529fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck private static native void nDecStrong(long ptr); 539fa4071c4768c63902c6a74a4b480b51a8b95d43John Reck} 54