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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.Config;
     23 import android.util.Log;
     24 import java.nio.ByteBuffer;
     25 
     26 /**
     27  * Handle an EXIT chunk.
     28  */
     29 public class DdmHandleExit extends ChunkHandler {
     30 
     31     public static final int CHUNK_EXIT = type("EXIT");
     32 
     33     private static DdmHandleExit mInstance = new DdmHandleExit();
     34 
     35 
     36     /* singleton, do not instantiate */
     37     private DdmHandleExit() {}
     38 
     39     /**
     40      * Register for the messages we're interested in.
     41      */
     42     public static void register() {
     43         DdmServer.registerHandler(CHUNK_EXIT, mInstance);
     44     }
     45 
     46     /**
     47      * Called when the DDM server connects.  The handler is allowed to
     48      * send messages to the server.
     49      */
     50     public void connected() {}
     51 
     52     /**
     53      * Called when the DDM server disconnects.  Can be used to disable
     54      * periodic transmissions or clean up saved state.
     55      */
     56     public void disconnected() {}
     57 
     58     /**
     59      * Handle a chunk of data.  We're only registered for "EXIT".
     60      */
     61     public Chunk handleChunk(Chunk request) {
     62         if (Config.LOGV)
     63             Log.v("ddm-exit", "Handling " + name(request.type) + " chunk");
     64 
     65         /*
     66          * Process the request.
     67          */
     68         ByteBuffer in = wrapChunk(request);
     69 
     70         int statusCode = in.getInt();
     71 
     72         Runtime.getRuntime().halt(statusCode);
     73 
     74         // if that doesn't work, return an empty message
     75         return null;
     76     }
     77 }
     78 
     79