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/*
* Copyright (c) 2013, 2021, 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.
*/
/*
* @test
* @bug 8024927
* @summary Testing address of compressed class pointer space as best as possible.
* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true & os.family != "windows" & !(os.family == "mac" & os.arch=="aarch64")
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main CompressedClassPointers
*/
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jtreg.SkippedException;
public class CompressedClassPointers {
public static void smallHeapTest() throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:SharedBaseAddress=8g",
"-Xmx128m",
"-Xlog:gc+metaspace=trace",
"-Xshare:off",
"-Xlog:cds=trace",
"-XX:+VerifyBeforeGC", "-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Narrow klass base: 0x0000000000000000");
output.shouldHaveExitValue(0);
}
public static void smallHeapTestWith1G() throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:CompressedClassSpaceSize=1g",
"-Xmx128m",
"-Xlog:gc+metaspace=trace",
"-Xshare:off",
"-Xlog:cds=trace",
"-XX:+VerifyBeforeGC", "-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3");
output.shouldHaveExitValue(0);
}
public static void largeHeapTest() throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-Xmx30g",
"-XX:-UseAOT", // AOT explicitly set klass shift to 3.
"-Xlog:gc+metaspace=trace",
"-Xshare:off",
"-Xlog:cds=trace",
"-XX:+VerifyBeforeGC", "-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldNotContain("Narrow klass base: 0x0000000000000000");
output.shouldContain("Narrow klass shift: 0");
output.shouldHaveExitValue(0);
}
public static void largePagesTest() throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-Xmx128m",
"-XX:+UseLargePages",
"-Xlog:gc+metaspace=trace",
"-XX:+VerifyBeforeGC", "-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Narrow klass base:");
output.shouldHaveExitValue(0);
}
public static void heapBaseMinAddressTest() throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:HeapBaseMinAddress=1m",
"-Xlog:gc+heap+coops=debug",
"-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("HeapBaseMinAddress must be at least");
output.shouldHaveExitValue(0);
}
public static void sharingTest() throws Exception {
// Test small heaps
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
"-Xmx128m",
"-XX:SharedBaseAddress=8g",
"-XX:+PrintCompressedOopsMode",
"-XX:+VerifyBeforeGC",
"-Xshare:dump");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
if (output.firstMatch("Shared spaces are not supported in this VM") != null) {
return;
}
try {
output.shouldContain("Loading classes to share");
output.shouldHaveExitValue(0);
pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
"-Xmx128m",
"-XX:SharedBaseAddress=8g",
"-XX:+PrintCompressedOopsMode",
"-Xshare:on",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("sharing");
output.shouldHaveExitValue(0);
} catch (RuntimeException e) {
output.shouldContain("Unable to use shared archive");
output.shouldHaveExitValue(1);
}
}
public static void main(String[] args) throws Exception {
if (Platform.isSolaris()) {
String name = System.getProperty("os.version");
if (name.equals("5.10")) {
throw new SkippedException("Solaris 10 can't mmap compressed oops space without a base");
}
}
smallHeapTest();
smallHeapTestWith1G();
largeHeapTest();
largePagesTest();
heapBaseMinAddressTest();
sharingTest();
}
}
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