1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 package gc.arguments;

    25 

    26 /*

    27  * @test TestSoftMaxHeapSizeFlag

    28  * @key gc

    29  * @library /test/lib

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

    31  *          java.management

    32  * @run main/othervm gc.arguments.TestSoftMaxHeapSizeFlag

    33  */

    34 

    35 import jdk.test.lib.process.ProcessTools;

    36 

    37 public class TestSoftMaxHeapSizeFlag {

    38     private static final long Xms              = 200 * 1024 * 1024;

    39     private static final long Xmx              = 300 * 1024 * 1024;

    40     private static final long greaterThanXmx   = Xmx + 1;

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

    42 

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

    44         // Test default value

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

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

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

    48                     .shouldHaveExitValue(0);

    49 

    50         // Test setting small value

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

    52                                                   "-XX:SoftMaxHeapSize=" + Xms,

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

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

    55                     .shouldHaveExitValue(0);

    56 

    57         // Test setting middle value

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

    59                                                   "-XX:SoftMaxHeapSize=" + betweenXmsAndXmx,

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

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

    62                     .shouldHaveExitValue(0);

    63 

    64         // Test setting largest value

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

    66                                                   "-XX:SoftMaxHeapSize=" + Xmx,

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

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

    69                     .shouldHaveExitValue(0);

    70 

    71         // Test setting a too large value

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

    73                                                   "-XX:SoftMaxHeapSize=" + greaterThanXmx,

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

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

    76                     .shouldHaveExitValue(1);

    77     }

    78 }