1 /******************************************************************************* 2 * Copyright (c) 2009, 2018 Mountainminds GmbH & Co. KG and Contributors 3 * All rights reserved. This program and the accompanying materials 4 * are made available under the terms of the Eclipse Public License v1.0 5 * which accompanies this distribution, and is available at 6 * http://www.eclipse.org/legal/epl-v10.html 7 * 8 * Contributors: 9 * Marc R. Hoffmann - initial API and implementation 10 * 11 *******************************************************************************/ 12 package org.jacoco.core.test.perf; 13 14 import org.jacoco.core.instr.Instrumenter; 15 import org.jacoco.core.runtime.IRuntime; 16 import org.jacoco.core.runtime.LoggerRuntime; 17 import org.jacoco.core.test.TargetLoader; 18 import org.objectweb.asm.ClassReader; 19 20 /** 21 * Scenario to measure the overhead in terms of additional byte code size 22 * through instrumentation. 23 */ 24 public class InstrumentationSizeSzenario implements IPerfScenario { 25 26 private final Class<?> target; 27 28 public InstrumentationSizeSzenario(Class<?> target) { 29 this.target = target; 30 } 31 32 public void run(IPerfOutput output) throws Exception { 33 final IRuntime runtime = new LoggerRuntime(); 34 ClassReader reader = new ClassReader(TargetLoader.getClassData(target)); 35 final Instrumenter instr = new Instrumenter(runtime); 36 instr.instrument(reader); 37 output.writeByteResult("instrumented class", 38 instr.instrument(reader).length, reader.b.length); 39 } 40 41 } 42
