/*

 * Copyright (c) 2019, 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.

 */

package gc.arguments;

/*

 * @test TestSoftMaxHeapSizeFlag

 * @key gc

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run main/othervm gc.arguments.TestSoftMaxHeapSizeFlag

 */

import jdk.test.lib.process.ProcessTools;

public class TestSoftMaxHeapSizeFlag {

    // Note: Xms and Xmx values get aligned up by HeapAlignment which is 32M with 64k pages.

    private static final long Xms              = 224 * 1024 * 1024;

    private static final long Xmx              = 320 * 1024 * 1024;

    private static final long greaterThanXmx   = Xmx + 1;

    private static final long betweenXmsAndXmx = (Xms + Xmx) / 2;

    public static void main(String args[]) throws Exception {

        // Test default value

        ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx,

                                                  "-XX:+PrintFlagsFinal", "-version" })

                    .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xmx)

                    .shouldHaveExitValue(0);

        // Test setting small value

        ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx,

                                                  "-XX:SoftMaxHeapSize=" + Xms,

                                                  "-XX:+PrintFlagsFinal", "-version" })

                    .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xms)

                    .shouldHaveExitValue(0);

        // Test setting middle value

        ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx,

                                                  "-XX:SoftMaxHeapSize=" + betweenXmsAndXmx,

                                                  "-XX:+PrintFlagsFinal", "-version" })

                    .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + betweenXmsAndXmx)

                    .shouldHaveExitValue(0);

        // Test setting largest value

        ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx,

                                                  "-XX:SoftMaxHeapSize=" + Xmx,

                                                  "-XX:+PrintFlagsFinal", "-version" })

                    .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xmx)

                    .shouldHaveExitValue(0);

        // Test setting a too large value

        ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx,

                                                  "-XX:SoftMaxHeapSize=" + greaterThanXmx,

                                                  "-XX:+PrintFlagsFinal", "-version" })

                    .shouldContain("SoftMaxHeapSize must be less than or equal to the maximum heap size")

                    .shouldHaveExitValue(1);

    }

}