1 /* 2 * Copyright (C) 2025 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 package android.vmdebug.cts; 17 18 import static org.junit.Assert.assertNotEquals; 19 import static org.junit.Assert.assertNotNull; 20 import static org.junit.Assert.assertTrue; 21 22 import android.platform.test.annotations.RequiresFlagsEnabled; 23 24 import androidx.test.core.app.ApplicationProvider; 25 import androidx.test.runner.AndroidJUnit4; 26 27 import dalvik.system.VMDebug; 28 29 import org.junit.Test; 30 import org.junit.runner.RunWith; 31 32 import java.io.File; 33 import java.io.FileOutputStream; 34 35 /** Tests for VMDebug API */ 36 @RunWith(AndroidJUnit4.class) 37 public class VMDebugDeviceTest { 38 39 @Test 40 @RequiresFlagsEnabled(com.android.art.flags.Flags.FLAG_ALWAYS_ENABLE_PROFILE_CODE) testLowOverheadTraceFileName()41 public void testLowOverheadTraceFileName() throws Exception { 42 File file = getTraceFile(); 43 try { 44 VMDebug.TraceDestination trace = 45 VMDebug.TraceDestination.fromFileName(file.getAbsolutePath()); 46 testLowOverheadTrace(trace); 47 } finally { 48 file.delete(); 49 } 50 } 51 52 @Test 53 @RequiresFlagsEnabled(com.android.art.flags.Flags.FLAG_ALWAYS_ENABLE_PROFILE_CODE) testLowOverheadTraceFd()54 public void testLowOverheadTraceFd() throws Exception { 55 File file = getTraceFile(); 56 try (FileOutputStream out_file = new FileOutputStream(file)) { 57 VMDebug.TraceDestination trace = 58 VMDebug.TraceDestination.fromFileDescriptor(out_file.getFD()); 59 testLowOverheadTrace(trace); 60 } finally { 61 file.delete(); 62 } 63 } 64 65 @Test 66 @RequiresFlagsEnabled(com.android.art.flags.Flags.FLAG_EXECUTABLE_METHOD_FILE_OFFSETS) testGetExecutableMethodFileOffsets()67 public void testGetExecutableMethodFileOffsets() throws Exception { 68 java.lang.reflect.Method method = this.getClass().getDeclaredMethod("testMethod"); 69 70 VMDebug.ExecutableMethodFileOffsets offsets = 71 VMDebug.getExecutableMethodFileOffsets(method); 72 73 assertNotNull(offsets); 74 String containerPath = offsets.getContainerPath(); 75 assertNotNull(containerPath); 76 assertNotEquals("", containerPath); 77 assertTrue(offsets.getMethodOffset() > 0); 78 assertTrue(offsets.getContainerOffset() > 0); 79 } 80 testMethod()81 private void testMethod() { 82 final long debugTime = 1000; 83 84 try { 85 Thread.sleep(debugTime); 86 } catch (Exception e) { 87 // This method is just used to generate code to be traced. So just ignore any 88 // exceptions. 89 } 90 } 91 testLowOverheadTrace(VMDebug.TraceDestination trace)92 private void testLowOverheadTrace(VMDebug.TraceDestination trace) throws Exception { 93 VMDebug.startLowOverheadTraceForAllMethods(); 94 testMethod(); 95 VMDebug.dumpLowOverheadTrace(trace); 96 VMDebug.stopLowOverheadTrace(); 97 } 98 getTraceFile()99 private File getTraceFile() { 100 File dir = ApplicationProvider.getApplicationContext().getFilesDir(); 101 File file = new File(dir, "vmdebug_lowoverhead.trace"); 102 return file; 103 } 104 } 105