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 24 /** 25 * Handle thread-related traffic. 26 */ 27 public class DdmHandleNativeHeap extends ChunkHandler { 28 29 public static final int CHUNK_NHGT = type("NHGT"); 30 31 private static DdmHandleNativeHeap mInstance = new DdmHandleNativeHeap(); 32 33 34 /* singleton, do not instantiate */ DdmHandleNativeHeap()35 private DdmHandleNativeHeap() {} 36 37 /** 38 * Register for the messages we're interested in. 39 */ register()40 public static void register() { 41 DdmServer.registerHandler(CHUNK_NHGT, mInstance); 42 } 43 44 /** 45 * Called when the DDM server connects. The handler is allowed to 46 * send messages to the server. 47 */ connected()48 public void connected() {} 49 50 /** 51 * Called when the DDM server disconnects. Can be used to disable 52 * periodic transmissions or clean up saved state. 53 */ disconnected()54 public void disconnected() {} 55 56 /** 57 * Handle a chunk of data. 58 */ handleChunk(Chunk request)59 public Chunk handleChunk(Chunk request) { 60 Log.i("ddm-nativeheap", "Handling " + name(request.type) + " chunk"); 61 int type = request.type; 62 63 if (type == CHUNK_NHGT) { 64 return handleNHGT(request); 65 } else { 66 throw new RuntimeException("Unknown packet " 67 + ChunkHandler.name(type)); 68 } 69 } 70 71 /* 72 * Handle a "Native Heap GeT" request. 73 */ handleNHGT(Chunk request)74 private Chunk handleNHGT(Chunk request) { 75 //ByteBuffer in = wrapChunk(request); 76 77 byte[] data = getLeakInfo(); 78 79 if (data != null) { 80 // wrap & return 81 Log.i("ddm-nativeheap", "Sending " + data.length + " bytes"); 82 return new Chunk(ChunkHandler.type("NHGT"), data, 0, data.length); 83 } else { 84 // failed, return a failure error code and message 85 return createFailChunk(1, "Something went wrong"); 86 } 87 } 88 getLeakInfo()89 private native byte[] getLeakInfo(); 90 } 91 92