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