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      1 /*
      2  * Copyright (C) 2007 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.ddm;
     18 
     19 import org.apache.harmony.dalvik.ddmc.Chunk;
     20 import org.apache.harmony.dalvik.ddmc.ChunkHandler;
     21 import org.apache.harmony.dalvik.ddmc.DdmServer;
     22 import android.util.Log;
     23 import java.nio.ByteBuffer;
     24 
     25 /**
     26  * Handle an EXIT chunk.
     27  */
     28 public class DdmHandleExit extends ChunkHandler {
     29 
     30     public static final int CHUNK_EXIT = type("EXIT");
     31 
     32     private static DdmHandleExit mInstance = new DdmHandleExit();
     33 
     34 
     35     /* singleton, do not instantiate */
     36     private DdmHandleExit() {}
     37 
     38     /**
     39      * Register for the messages we're interested in.
     40      */
     41     public static void register() {
     42         DdmServer.registerHandler(CHUNK_EXIT, mInstance);
     43     }
     44 
     45     /**
     46      * Called when the DDM server connects.  The handler is allowed to
     47      * send messages to the server.
     48      */
     49     public void connected() {}
     50 
     51     /**
     52      * Called when the DDM server disconnects.  Can be used to disable
     53      * periodic transmissions or clean up saved state.
     54      */
     55     public void disconnected() {}
     56 
     57     /**
     58      * Handle a chunk of data.  We're only registered for "EXIT".
     59      */
     60     public Chunk handleChunk(Chunk request) {
     61         if (false)
     62             Log.v("ddm-exit", "Handling " + name(request.type) + " chunk");
     63 
     64         /*
     65          * Process the request.
     66          */
     67         ByteBuffer in = wrapChunk(request);
     68 
     69         int statusCode = in.getInt();
     70 
     71         Runtime.getRuntime().halt(statusCode);
     72 
     73         // if that doesn't work, return an empty message
     74         return null;
     75     }
     76 }
     77 
     78