1 /* 2 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.openjdk.bench.javax.tools; 24 25 import org.openjdk.jmh.annotations.Benchmark; 26 import org.openjdk.jmh.annotations.BenchmarkMode; 27 import org.openjdk.jmh.annotations.Mode; 28 import org.openjdk.jmh.annotations.OutputTimeUnit; 29 import org.openjdk.jmh.annotations.Scope; 30 import org.openjdk.jmh.annotations.Setup; 31 import org.openjdk.jmh.annotations.State; 32 33 import javax.tools.JavaCompiler; 34 import javax.tools.SimpleJavaFileObject; 35 import javax.tools.StandardJavaFileManager; 36 import javax.tools.ToolProvider; 37 import java.net.URI; 38 import java.util.ArrayList; 39 import java.util.List; 40 import java.util.concurrent.TimeUnit; 41 42 @BenchmarkMode(Mode.AverageTime) 43 @OutputTimeUnit(TimeUnit.MILLISECONDS) 44 @State(Scope.Thread) 45 public class Javac { 46 private List<JavaSourceFromString> compilationUnits; 47 private JavaCompiler compiler; 48 private StandardJavaFileManager fileManager; 49 50 @Setup 51 public void prepare() { 52 String helloWorld = "class Apan { \n" + " public static void main(String args[]) {\n" 53 + " System.out.println(\"hej apa\");\n" + " }\n" + "}\n"; 54 55 compiler = ToolProvider.getSystemJavaCompiler(); 56 fileManager = compiler.getStandardFileManager(null, null, null); 57 compilationUnits = new ArrayList<>(); 58 compilationUnits.add(new JavaSourceFromString("Apan", helloWorld)); 59 } 60 61 @Benchmark 62 public Boolean testCompile() throws Exception { 63 JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager, null, null, null, compilationUnits); 64 return task.call(); 65 } 66 67 private static class JavaSourceFromString extends SimpleJavaFileObject { 68 final String code; 69 70 JavaSourceFromString(String name, String code) { 71 super(URI.create("string:///" + name.replace('.', '/') + Kind.SOURCE.extension), 72 Kind.SOURCE); 73 this.code = code; 74 } 75 76 @Override 77 public CharSequence getCharContent(boolean ignoreEncodingErrors) { 78 return code; 79 } 80 } 81 }