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 android.util.Log; 20 21 import org.apache.harmony.dalvik.ddmc.Chunk; 22 import org.apache.harmony.dalvik.ddmc.ChunkHandler; 23 import org.apache.harmony.dalvik.ddmc.DdmServer; 24 25 /** 26 * Handle native and virtual heap requests. 27 */ 28 public class DdmHandleHeap extends DdmHandle { 29 30 public static final int CHUNK_HPGC = ChunkHandler.type("HPGC"); 31 32 private static DdmHandleHeap mInstance = new DdmHandleHeap(); 33 34 35 /* singleton, do not instantiate */ DdmHandleHeap()36 private DdmHandleHeap() {} 37 38 /** 39 * Register for the messages we're interested in. 40 */ register()41 public static void register() { 42 DdmServer.registerHandler(CHUNK_HPGC, mInstance); 43 } 44 45 /** 46 * Called when the DDM server connects. The handler is allowed to 47 * send messages to the server. 48 */ onConnected()49 public void onConnected() {} 50 51 /** 52 * Called when the DDM server disconnects. Can be used to disable 53 * periodic transmissions or clean up saved state. 54 */ onDisconnected()55 public void onDisconnected() {} 56 57 /** 58 * Handle a chunk of data. 59 */ handleChunk(Chunk request)60 public Chunk handleChunk(Chunk request) { 61 if (false) 62 Log.v("ddm-heap", "Handling " + name(request.type) + " chunk"); 63 int type = request.type; 64 65 if (type == CHUNK_HPGC) { 66 return handleHPGC(request); 67 } else { 68 throw new RuntimeException("Unknown packet " + name(type)); 69 } 70 } 71 72 /* 73 * Handle a "HeaP Garbage Collection" request. 74 */ handleHPGC(Chunk request)75 private Chunk handleHPGC(Chunk request) { 76 //ByteBuffer in = wrapChunk(request); 77 78 if (false) 79 Log.d("ddm-heap", "Heap GC request"); 80 Runtime.getRuntime().gc(); 81 82 return null; // empty response 83 } 84 } 85