1 /* 2 * Copyright (C) 2008 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 import android.util.Log; 18 import android.os.Debug; 19 20 /** 21 * Loads a class, runs the garbage collector, and prints showmap output. 22 * 23 * <p>Usage: dalvikvm LoadClass [class name] 24 */ 25 class LoadClass { 26 main(String[] args)27 public static void main(String[] args) { 28 System.loadLibrary("android_runtime"); 29 30 if (registerNatives() < 0) { 31 throw new RuntimeException("Error registering natives."); 32 } 33 34 Debug.startAllocCounting(); 35 36 if (args.length > 0) { 37 try { 38 long start = System.currentTimeMillis(); 39 Class.forName(args[0]); 40 long elapsed = System.currentTimeMillis() - start; 41 Log.i("LoadClass", "Loaded " + args[0] + " in " + elapsed 42 + "ms."); 43 } catch (ClassNotFoundException e) { 44 Log.w("LoadClass", e); 45 return; 46 } 47 } 48 49 System.gc(); 50 51 int allocCount = Debug.getGlobalAllocCount(); 52 int allocSize = Debug.getGlobalAllocSize(); 53 int freedCount = Debug.getGlobalFreedCount(); 54 int freedSize = Debug.getGlobalFreedSize(); 55 long nativeHeapSize = Debug.getNativeHeapSize(); 56 57 Debug.stopAllocCounting(); 58 59 StringBuilder response = new StringBuilder("DECAFBAD"); 60 61 int[] pages = new int[6]; 62 Debug.MemoryInfo memoryInfo = new Debug.MemoryInfo(); 63 Debug.getMemoryInfo(memoryInfo); 64 response.append(',').append(memoryInfo.nativeSharedDirty); 65 response.append(',').append(memoryInfo.dalvikSharedDirty); 66 response.append(',').append(memoryInfo.otherSharedDirty); 67 response.append(',').append(memoryInfo.nativePrivateDirty); 68 response.append(',').append(memoryInfo.dalvikPrivateDirty); 69 response.append(',').append(memoryInfo.otherPrivateDirty); 70 71 response.append(',').append(allocCount); 72 response.append(',').append(allocSize); 73 response.append(',').append(freedCount); 74 response.append(',').append(freedSize); 75 response.append(',').append(nativeHeapSize); 76 77 System.out.println(response.toString()); 78 } 79 80 /** 81 * Registers native functions. See AndroidRuntime.cpp. 82 */ registerNatives()83 static native int registerNatives(); 84 } 85