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/*
* Copyright (c) 2014, 2016, 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 8022865
* @summary Tests for the -XX:CompressedClassSpaceSize command line option
* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main CompressedClassSpaceSize
*/
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class CompressedClassSpaceSize {
public static void main(String[] args) throws Exception {
ProcessBuilder pb;
OutputAnalyzer output;
if (Platform.is64bit()) {
// Minimum size is 1MB
pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=0",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("outside the allowed range")
.shouldHaveExitValue(1);
// Invalid size of -1 should be handled correctly
pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=-1",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Improperly specified VM option 'CompressedClassSpaceSize=-1'")
.shouldHaveExitValue(1);
// Maximum size is 3GB
pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=4g",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("outside the allowed range")
.shouldHaveExitValue(1);
// Make sure the minimum size is set correctly and printed
pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions",
"-XX:CompressedClassSpaceSize=1m",
"-Xlog:gc+metaspace=trace",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Compressed class space size: 1048576")
.shouldHaveExitValue(0);
// Make sure the maximum size is set correctly and printed
pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions",
"-XX:CompressedClassSpaceSize=3g",
"-Xlog:gc+metaspace=trace",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Compressed class space size: 3221225472")
.shouldHaveExitValue(0);
pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedOops",
"-XX:CompressedClassSpaceSize=1m",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
.shouldHaveExitValue(0);
pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedClassPointers",
"-XX:CompressedClassSpaceSize=1m",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
.shouldHaveExitValue(0);
} else {
// 32bit platforms doesn't have compressed oops
pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=1m",
"-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
.shouldHaveExitValue(0);
}
}
}
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