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/*******************************************************************************
* Copyright (c) 2009, 2018 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.test.perf;
import java.util.concurrent.Callable;
import org.jacoco.core.instr.Instrumenter;
import org.jacoco.core.runtime.IRuntime;
import org.jacoco.core.runtime.LoggerRuntime;
import org.jacoco.core.runtime.RuntimeData;
import org.jacoco.core.test.TargetLoader;
import org.objectweb.asm.ClassReader;
/**
* This scenario runs a given scenario twice and reports the execution time:
* Once on its original version, once in a instrumented version.
*/
public class ExecuteInstrumentedCodeScenario extends TimedScenario {
private final Class<? extends Callable<Void>> target;
protected ExecuteInstrumentedCodeScenario(String description,
Class<? extends Callable<Void>> target) {
super(description);
this.target = target;
}
@Override
@SuppressWarnings("unchecked")
protected Callable<Void> getInstrumentedCallable() throws Exception {
ClassReader reader = new ClassReader(TargetLoader.getClassData(target));
IRuntime runtime = new LoggerRuntime();
runtime.startup(new RuntimeData());
final Instrumenter instr = new Instrumenter(runtime);
final byte[] instrumentedBuffer = instr.instrument(reader);
final TargetLoader loader = new TargetLoader();
return (Callable<Void>) loader.add(target, instrumentedBuffer)
.newInstance();
}
@Override
protected Callable<Void> getReferenceCallable() throws Exception {
return target.newInstance();
}
}
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