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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tools.perflib.vmtrace;
import com.android.annotations.NonNull;
import com.android.utils.SparseArray;
import com.google.common.base.Joiner;
import junit.framework.TestCase;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
public class VmTraceParserTest extends TestCase {
public void testParseHeader() throws IOException {
File f = getFile("/header.trace");
VmTraceParser parser = new VmTraceParser(f);
parser.parseHeader(f);
VmTraceData traceData = parser.getTraceData();
assertEquals(3, traceData.getVersion());
assertTrue(traceData.isDataFileOverflow());
assertEquals(VmTraceData.ClockType.DUAL, traceData.getClockType());
assertEquals("dalvik", traceData.getVm());
SparseArray<String> threads = traceData.getThreads();
assertEquals(2, threads.size());
assertEquals("main", threads.get(1));
assertEquals("AsyncTask #1", threads.get(11));
Map<Long, MethodInfo> methods = traceData.getMethods();
assertEquals(4, methods.size());
MethodInfo info = traceData.getMethod(0x62830738);
assertNotNull(info);
assertEquals("android/graphics/Bitmap", info.className);
assertEquals("access$100", info.methodName);
assertEquals("(I)V", info.signature);
assertEquals("android/graphics/BitmapF.java", info.srcPath);
assertEquals(29, info.srcLineNumber);
info = traceData.getMethod(0x6282b4b0);
assertNotNull(info);
assertEquals(-1, info.srcLineNumber);
}
private class CallFormatter implements Call.Formatter {
private final Map<Long, MethodInfo> mMethodInfo;
public CallFormatter(Map<Long, MethodInfo> methodInfo) {
mMethodInfo = methodInfo;
}
@Override
public String format(Call c) {
MethodInfo info = mMethodInfo.get(c.getMethodId());
return info == null ? Long.toString(c.getMethodId()) : info.getName();
}
}
private void testTrace(String traceName, String threadName, String expectedCallSequence) throws IOException {
VmTraceData traceData = getVmTraceData(traceName);
int threadId = findThreadIdFromName(threadName, traceData.getThreads());
assertTrue(String.format("Thread %s was not found in the trace", threadName), threadId > 0);
List<Call> calls = traceData.getCalls(threadId);
String actual = formatCallStacks(calls, new CallFormatter(traceData.getMethods()));
assertEquals(expectedCallSequence, actual);
}
public void testBasicTrace() throws IOException {
String expected =
" -> android/os/Debug.startMethodTracing: (Ljava/lang/String;)V -> android/os/Debug.startMethodTracing: (Ljava/lang/String;II)V -> dalvik/system/VMDebug.startMethodTracing: (Ljava/lang/String;II)V\n"
+ " -> com/test/android/traceview/Basic.foo: ()V -> com/test/android/traceview/Basic.bar: ()I\n"
+ " -> android/os/Debug.stopMethodTracing: ()V -> dalvik/system/VMDebug.stopMethodTracing: ()V";
testTrace("/basic.trace", "AsyncTask #1", expected);
}
public void testMisMatchedTrace() throws IOException {
String expected =
" -> com/test/android/traceview/MisMatched.foo: ()V -> com/test/android/traceview/MisMatched.bar: ()V -> android/os/Debug.startMethodTracing: (Ljava/lang/String;)V -> android/os/Debug.startMethodTracing: (Ljava/lang/String;II)V -> dalvik/system/VMDebug.startMethodTracing: (Ljava/lang/String;II)V\n"
+ " -> com/test/android/traceview/MisMatched.baz: ()I\n"
+ " -> android/os/Debug.stopMethodTracing: ()V -> dalvik/system/VMDebug.stopMethodTracing: ()V";
testTrace("/mismatched.trace", "AsyncTask #1", expected);
}
public void testExceptionTrace() throws IOException {
String expected =
" -> android/os/Debug.startMethodTracing: (Ljava/lang/String;)V -> android/os/Debug.startMethodTracing: (Ljava/lang/String;II)V -> dalvik/system/VMDebug.startMethodTracing: (Ljava/lang/String;II)V\n"
+ " -> com/test/android/traceview/Exceptions.foo: ()V -> com/test/android/traceview/Exceptions.bar: ()V -> com/test/android/traceview/Exceptions.baz: ()V -> java/lang/RuntimeException.<init>: ()V -> java/lang/Exception.<init>: ()V -> java/lang/Throwable.<init>: ()V -> java/util/Collections.emptyList: ()Ljava/util/List;\n"
+ " -> java/lang/Throwable.fillInStackTrace: ()Ljava/lang/Throwable; -> java/lang/Throwable.nativeFillInStackTrace: ()Ljava/lang/Object;\n"
+ " -> android/os/Debug.stopMethodTracing: ()V -> dalvik/system/VMDebug.stopMethodTracing: ()V";
testTrace("/exception.trace", "AsyncTask #1", expected);
}
private int findThreadIdFromName(@NonNull String threadName,
@NonNull SparseArray<String> threads) {
for (int i = 0; i < threads.size(); i++) {
int id = threads.keyAt(i);
String name = threads.valueAt(i);
if (threadName.equals(name)) {
return id;
}
}
return -1;
}
private String formatCallStacks(List<Call> calls, Call.Formatter formatter) {
if (calls == null) return "<none>";
List<String> callStacks = new ArrayList<String>(calls.size());
for (Call c : calls) {
callStacks.add(c.format(formatter));
}
return Joiner.on('\n').join(callStacks);
}
private VmTraceData getVmTraceData(String traceFilePath) throws IOException {
VmTraceParser parser = new VmTraceParser(getFile(traceFilePath));
parser.parse();
return parser.getTraceData();
}
private File getFile(String path) {
URL resource = getClass().getResource(path);
// Note: When running from an IntelliJ, make sure the IntelliJ compiler settings treats
// *.trace files as resources, otherwise they are excluded from compiler output
// resulting in a NPE.
assertNotNull(path + " not found", resource);
return new File(resource.getFile());
}
}
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