| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package gc.g1.humongousObjects; |
| |
| import gc.testlibrary.Helpers; |
| import sun.hotspot.WhiteBox; |
| |
| import java.io.IOException; |
| import java.nio.file.Path; |
| |
| /** |
| * Provides generated and compiled sample classes and theirs expected sizes. |
| */ |
| public enum G1SampleClass { |
| |
| LARGEST_NON_HUMONGOUS { |
| @Override |
| public long expectedInstanceSize() { |
| return HALF_G1_REGION_SIZE; |
| } |
| }, |
| SMALLEST_HUMONGOUS { |
| @Override |
| public long expectedInstanceSize() { |
| return HALF_G1_REGION_SIZE + Helpers.SIZE_OF_LONG; |
| } |
| }, |
| ONE_REGION_HUMONGOUS { |
| @Override |
| public long expectedInstanceSize() { |
| return G1_REGION_SIZE; |
| } |
| }, |
| TWO_REGION_HUMONGOUS { |
| @Override |
| public long expectedInstanceSize() { |
| return G1_REGION_SIZE + Helpers.SIZE_OF_LONG; |
| } |
| }, |
| MORE_THAN_TWO_REGION_HUMONGOUS { |
| @Override |
| public long expectedInstanceSize() { |
| return G1_REGION_SIZE * 2 + Helpers.SIZE_OF_LONG; |
| } |
| }; |
| |
| private static final long G1_REGION_SIZE = WhiteBox.getWhiteBox().g1RegionSize(); |
| private static final long HALF_G1_REGION_SIZE = G1_REGION_SIZE / 2; |
| |
| /** |
| * Generates and compiles class with instance of specified size and loads it in specified class loader |
| * |
| * @param classLoader class loader which will be used to load class |
| * @param wrkDir working dir where generated classes are put and compiled |
| * @param classNamePrefix prefix for service classes (ones we use to create chain of inheritance) |
| * @return a class with instances of the specified size loaded in specified class loader |
| * @throws IOException |
| * @throws ClassNotFoundException |
| */ |
| |
| public Class<?> getCls(ClassLoader classLoader, Path wrkDir, String classNamePrefix) |
| throws IOException, ClassNotFoundException { |
| return Helpers.generateCompileAndLoad(classLoader, Helpers.enumNameToClassName(name()) + "Class", |
| expectedInstanceSize(), wrkDir, classNamePrefix); |
| } |
| |
| /** |
| * @return G1SampleClass instance expected size |
| */ |
| public abstract long expectedInstanceSize(); |
| } |