1 /* 2 * Copyright (C) 2016 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 java.io.File; 18 import java.io.IOException; 19 import java.lang.reflect.Method; 20 21 public class Main { 22 main(String[] args)23 public static void main(String[] args) throws Exception { 24 System.loadLibrary(args[0]); 25 26 File file = null; 27 try { 28 file = createTempFile(); 29 // String codePath = getDexBaseLocation(); 30 String codePath = System.getenv("DEX_LOCATION") + "/595-profile-saving.jar"; 31 VMRuntime.registerAppInfo(file.getPath(), 32 new String[] {codePath}); 33 34 // Test that the profile saves an app method with a profiling info. 35 Method appMethod = Main.class.getDeclaredMethod("testAddMethodToProfile", 36 File.class, Method.class); 37 testAddMethodToProfile(file, appMethod); 38 39 // Test that the profile saves a boot class path method with a profiling info. 40 Method bootMethod = File.class.getDeclaredMethod("delete"); 41 if (bootMethod.getDeclaringClass().getClassLoader() != Object.class.getClassLoader()) { 42 System.out.println("Class loader does not match boot class"); 43 } 44 testAddMethodToProfile(file, bootMethod); 45 } finally { 46 if (file != null) { 47 file.delete(); 48 } 49 } 50 } 51 testAddMethodToProfile(File file, Method m)52 static void testAddMethodToProfile(File file, Method m) { 53 // Make sure we have a profile info for this method without the need to loop. 54 ensureProfilingInfo(m); 55 // Make sure the profile gets saved. 56 ensureProfileProcessing(); 57 // Verify that the profile was saved and contains the method. 58 if (!presentInProfile(file.getPath(), m)) { 59 throw new RuntimeException("Method with index " + m + " not in the profile"); 60 } 61 } 62 63 // Ensure a method has a profiling info. ensureProfilingInfo(Method method)64 public static native void ensureProfilingInfo(Method method); 65 // Ensures the profile saver does its usual processing. ensureProfileProcessing()66 public static native void ensureProfileProcessing(); 67 // Checks if the profiles saver knows about the method. presentInProfile(String profile, Method method)68 public static native boolean presentInProfile(String profile, Method method); 69 70 private static final String TEMP_FILE_NAME_PREFIX = "dummy"; 71 private static final String TEMP_FILE_NAME_SUFFIX = "-file"; 72 getProfileInfoDump( String filename)73 static native String getProfileInfoDump( 74 String filename); 75 createTempFile()76 private static File createTempFile() throws Exception { 77 try { 78 return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX); 79 } catch (IOException e) { 80 System.setProperty("java.io.tmpdir", "/data/local/tmp"); 81 try { 82 return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX); 83 } catch (IOException e2) { 84 System.setProperty("java.io.tmpdir", "/sdcard"); 85 return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX); 86 } 87 } 88 } 89 90 private static class VMRuntime { 91 private static final Method registerAppInfoMethod; 92 static { 93 try { 94 Class<? extends Object> c = Class.forName("dalvik.system.VMRuntime"); 95 registerAppInfoMethod = c.getDeclaredMethod("registerAppInfo", 96 String.class, String[].class); 97 } catch (Exception e) { 98 throw new RuntimeException(e); 99 } 100 } 101 registerAppInfo(String profile, String[] codePaths)102 public static void registerAppInfo(String profile, String[] codePaths) 103 throws Exception { 104 registerAppInfoMethod.invoke(null, profile, codePaths); 105 } 106 } 107 } 108