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      1 /*
      2  * Copyright (C) 2017 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 android.os;
     18 
     19 import com.android.layoutlib.bridge.impl.DelegateManager;
     20 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
     21 
     22 import libcore.util.NativeAllocationRegistry_Delegate;
     23 
     24 /**
     25  * Delegate overriding selected methods of android.os.Binder
     26  *
     27  * Through the layoutlib_create tool, selected methods of Binder have been replaced
     28  * by calls to methods of the same name in this delegate class.
     29  *
     30  *
     31  */
     32 public class Binder_Delegate {
     33 
     34     // ---- delegate manager ----
     35     private static final DelegateManager<Binder_Delegate> sManager =
     36             new DelegateManager<>(Binder_Delegate.class);
     37     private static long sFinalizer = -1;
     38 
     39     @LayoutlibDelegate
     40     /*package*/ static long getNativeBBinderHolder() {
     41         return sManager.addNewDelegate(new Binder_Delegate());
     42     }
     43 
     44     @LayoutlibDelegate
     45     /*package*/ static long getNativeFinalizer() {
     46         synchronized (Binder_Delegate.class) {
     47             if (sFinalizer == -1) {
     48                 sFinalizer = NativeAllocationRegistry_Delegate.createFinalizer(
     49                         sManager::removeJavaReferenceFor);
     50             }
     51         }
     52         return sFinalizer;
     53     }
     54 }
     55