Java example source code file (ChangeDataModel.java)

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Java - Java tags/keywords

arch_opt, changedatamodel, data, error, file, jar_file_ext, opt_prefix, runtimeexception, string, testhelper, testjar, testresult

The ChangeDataModel.java Java example source code

/*
 * Copyright (c) 2012, 2013, 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 4894330 4810347 6277269
 * @compile -XDignore.symbol.file ChangeDataModel.java
 * @run main ChangeDataModel
 * @summary Verify -d32 and -d64 options are accepted(rejected) on all platforms
 * @author Joseph D. Darcy, ksrini
 */
import java.io.File;

public class ChangeDataModel extends TestHelper {
    private static final File TestJar      = new File("test" + JAR_FILE_EXT);
    private static final String OPT_PREFIX = "ARCH_OPT:";

    public static void main(String... args) throws Exception {
        String[] code = {
            "   public static void main(String argv[]) {",
            "      System.out.println(\"" + OPT_PREFIX + "-d\" + System.getProperty(\"sun.arch.data.model\", \"none\"));",
            "   }",
        };
        createJar(TestJar, code);

        // verify if data model flag for default data model is accepted
        if (is32Bit) {
            checkAcceptance(javaCmd, "-d32");
        } else if (is64Bit) {
            checkAcceptance(javaCmd, "-d64");
        } else {
            throw new Error("unsupported data model");
        }

        // Negative tests: ensure that non-dual mode systems reject the
        // complementary (other) data model
        if (is32Bit) {
            checkRejection(javaCmd, "-d64");
        } else if (is64Bit) {
            checkRejection(javaCmd, "-d32");
        } else {
            throw new Error("unsupported data model");
        }
    }

    static void checkAcceptance(String cmd, String dmodel) {
        TestResult tr = doExec(cmd, dmodel, "-jar", TestJar.getAbsolutePath());
        if (!tr.contains(OPT_PREFIX + dmodel)) {
            System.out.println(tr);
            String message = "Data model flag " + dmodel +
                    " not accepted or had improper effect.";
            throw new RuntimeException(message);
        }
    }

    static void checkRejection(String cmd, String dmodel) {
        TestResult tr = doExec(cmd, dmodel, "-jar", TestJar.getAbsolutePath());
        if (tr.contains(OPT_PREFIX + dmodel)) {
            System.out.println(tr);
            String message = "Data model flag " + dmodel + " was accepted.";
            throw new RuntimeException(message);
        }
    }
}