content: /*
   * Copyright (C) 2007 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.ddm;
  
  import org.apache.harmony.dalvik.ddmc.Chunk;
  import org.apache.harmony.dalvik.ddmc.ChunkHandler;
  import org.apache.harmony.dalvik.ddmc.DdmServer;
  import android.util.Log;
  
  /**
   * Handle thread-related traffic.
   */
  public class DdmHandleNativeHeap extends ChunkHandler {
  
      public static final int CHUNK_NHGT = type("NHGT");
  
      private static DdmHandleNativeHeap mInstance = new DdmHandleNativeHeap();
  
  
      /* singleton, do not instantiate */
      private DdmHandleNativeHeap() {}
  
      /**
       * Register for the messages we're interested in.
       */
      public static void register() {
          DdmServer.registerHandler(CHUNK_NHGT, mInstance);
      }
  
      /**
       * Called when the DDM server connects.  The handler is allowed to
       * send messages to the server.
       */
      public void connected() {}
  
      /**
       * Called when the DDM server disconnects.  Can be used to disable
       * periodic transmissions or clean up saved state.
       */
      public void disconnected() {}
  
      /**
       * Handle a chunk of data.
       */
      public Chunk handleChunk(Chunk request) {
          Log.i("ddm-nativeheap", "Handling " + name(request.type) + " chunk");
          int type = request.type;
  
          if (type == CHUNK_NHGT) {
              return handleNHGT(request);
          } else {
              throw new RuntimeException("Unknown packet "
                  + ChunkHandler.name(type));
          }
      }
  
      /*
       * Handle a "Native Heap GeT" request.
       */
      private Chunk handleNHGT(Chunk request) {
          //ByteBuffer in = wrapChunk(request);
  
          byte[] data = getLeakInfo();
  
          if (data != null) {
              // wrap & return
              Log.i("ddm-nativeheap", "Sending " + data.length + " bytes");
              return new Chunk(ChunkHandler.type("NHGT"), data, 0, data.length);
          } else {
              // failed, return a failure error code and message
              return createFailChunk(1, "Something went wrong");
          }
      }
      
      private native byte[] getLeakInfo();
  }
  
  