196 lines
8.9 KiB
Java
196 lines
8.9 KiB
Java
/*
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* Copyright (c) 2014, 2023, 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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/*
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* @test
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* @bug 8022865
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* @summary Tests for different combination of UseCompressedOops options
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* @requires vm.flagless
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. UseCompressedOops
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*/
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import java.util.ArrayList;
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import java.util.Collections;
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import jdk.test.lib.Platform;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.whitebox.gc.GC;
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import jdk.test.whitebox.code.Compiler;
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public class UseCompressedOops {
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public static void main(String[] args) throws Exception {
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testCompressedOopsModesGCs();
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if (!Platform.isOSX() && !Platform.isAix()) {
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testCompressedOopsModesGCs("-XX:+UseLargePages");
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}
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}
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public static void testCompressedOopsModesGCs(String... flags) throws Exception {
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ArrayList<String> args = new ArrayList<>();
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Collections.addAll(args, flags);
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// Test default.
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testCompressedOopsModes(args);
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// Test GCs.
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testCompressedOopsModes(args, "-XX:+UseG1GC");
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testCompressedOopsModes(args, "-XX:+UseSerialGC");
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testCompressedOopsModes(args, "-XX:+UseParallelGC");
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if (GC.Shenandoah.isSupported()) {
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testCompressedOopsModes(args, "-XX:+UnlockExperimentalVMOptions", "-XX:+UseShenandoahGC");
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}
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}
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public static void testCompressedOopsModes(ArrayList<String> flags1, String... flags2) throws Exception {
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ArrayList<String> args = new ArrayList<>();
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args.addAll(flags1);
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Collections.addAll(args, flags2);
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if (Platform.is64bit()) {
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// Explicitly turn off compressed oops
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testCompressedOops(args, "-XX:-UseCompressedOops", "-Xmx32m")
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.shouldNotContain("Compressed Oops")
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.shouldHaveExitValue(0);
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// Compressed oops should be on by default
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testCompressedOops(args, "-Xmx32m")
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.shouldContain("Compressed Oops mode")
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.shouldHaveExitValue(0);
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// Explicly enabling compressed oops
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m")
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.shouldContain("Compressed Oops mode")
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.shouldHaveExitValue(0);
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// Skip the following seven test cases if we're on OSX or Windows.
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//
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// OSX doesn't seem to care about HeapBaseMinAddress. Windows memory
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// locations are affected by ASLR.
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if (!Platform.isOSX() && !Platform.isWindows()) {
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// Larger than 4gb heap should result in zero based with shift 3
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx5g")
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.shouldContain("Zero based")
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.shouldContain("Oop shift amount: 3")
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.shouldHaveExitValue(0);
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// Larger than 3gb heap and HeapBaseMinAddress=1g should result in zero based with shift 3
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx3200m", "-XX:HeapBaseMinAddress=1g")
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.shouldContain("Zero based")
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.shouldContain("Oop shift amount: 3")
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.shouldHaveExitValue(0);
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// Small heap above 4gb should result in zero based with shift 3
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=4g")
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.shouldContain("Zero based")
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.shouldContain("Oop shift amount: 3")
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.shouldHaveExitValue(0);
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// Small heap above 32gb should result in non-zero based with shift 3
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=32g")
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.shouldContain("Non-zero disjoint base")
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.shouldContain("Oop shift amount: 3")
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.shouldHaveExitValue(0);
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// Small heap above 32gb should result in non-zero based with shift 3
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=72704m")
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.shouldContain("Non-zero based")
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.shouldContain("Oop shift amount: 3")
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.shouldHaveExitValue(0);
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// 32gb heap with heap base above 64gb and object alignment set to 16 bytes should result
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// in non-zero based with shift 4
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16",
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"-XX:HeapBaseMinAddress=64g")
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.shouldContain("Non-zero disjoint base")
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.shouldContain("Oop shift amount: 4")
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.shouldHaveExitValue(0);
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// 32gb heap with object alignment set to 16 bytes should result in zero based with shift 4
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16")
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.shouldContain("Zero based")
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.shouldContain("Oop shift amount: 4")
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.shouldHaveExitValue(0);
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}
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// This is a pathologic case for the heap allocation algorithm. Regression test.
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// HeapBaseMinAddress must be 2g and should not be set on the command line.
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx2g")
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.shouldNotContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx29g", "-XX:CompressedClassSpaceSize=1g")
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.shouldNotContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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// Explicitly enabling compressed oops with 32gb heap should result a warning
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g")
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.shouldContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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// 32gb heap should not result a warning
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testCompressedOops(args, "-Xmx32g")
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.shouldNotContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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// Explicitly enabling compressed oops with 32gb heap and object
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// alignment set to 8 byte should result a warning
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=8")
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.shouldContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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// 64gb heap and object alignment set to 16 bytes should result in a warning
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx64g", "-XX:ObjectAlignmentInBytes=16")
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.shouldContain("Max heap size too large for Compressed Oops")
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.shouldHaveExitValue(0);
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} else {
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// Compressed oops should only apply to 64bit platforms
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testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m")
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.shouldContain("Unrecognized VM option 'UseCompressedOops'")
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.shouldHaveExitValue(1);
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}
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}
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private static OutputAnalyzer testCompressedOops(ArrayList<String> flags1, String... flags2) throws Exception {
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ArrayList<String> args = new ArrayList<>();
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// Always run with these two:
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args.add("-Xlog:gc+heap+coops=trace");
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args.add("-Xms32m");
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// Add the extra flags
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args.addAll(flags1);
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Collections.addAll(args, flags2);
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args.add("-version");
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(args);
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return new OutputAnalyzer(pb.start());
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}
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}
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