82 lines
3.0 KiB
Java
82 lines
3.0 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 the -XX:ObjectAlignmentInBytes command line option
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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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* @run driver ObjectAlignment
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*/
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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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public class ObjectAlignment {
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public static void main(String[] args) throws Exception {
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if (Platform.is64bit()) {
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// Minimum alignment should be 8
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testObjectAlignment(4)
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.shouldContain("outside the allowed range")
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.shouldHaveExitValue(1);
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// Alignment has to be a power of 2
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testObjectAlignment(9)
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.shouldContain("must be power of 2")
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.shouldHaveExitValue(1);
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testObjectAlignment(-1)
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.shouldContain("outside the allowed range")
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.shouldHaveExitValue(1);
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// Maximum alignment allowed is 256
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testObjectAlignment(512)
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.shouldContain("outside the allowed range")
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.shouldHaveExitValue(1);
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// Valid alignments should work
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testObjectAlignment(8).shouldHaveExitValue(0);
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testObjectAlignment(16).shouldHaveExitValue(0);
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testObjectAlignment(256).shouldHaveExitValue(0);
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} else {
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// For a 32bit JVM the option isn't there, make sure it's not silently ignored
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testObjectAlignment(8)
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.shouldContain("Unrecognized VM option 'ObjectAlignmentInBytes=8'")
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.shouldHaveExitValue(1);
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}
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}
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private static OutputAnalyzer testObjectAlignment(int alignment) throws Exception {
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:ObjectAlignmentInBytes=" + alignment,
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"-version");
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return new OutputAnalyzer(pb.start());
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}
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}
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