1 /*

     2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.

     3  *

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

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

     6  * published by the Free Software Foundation.

     7  *

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

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

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

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

    12  * accompanied this code).

    13  *

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

    15  * 2 along with this work; if not, write to the Free Software Foundation,

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

    17  *

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

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

    20  * questions.

    21  *

    22  */

    23 

    24 /**

    25  * @test TestAllocLargerThanHeap

    26  * @summary Test that allocation of the object larger than heap fails predictably

    27  * @key gc

    28  * @requires vm.gc.Shenandoah

    29  * @library /test/lib

    30  * @run main TestAllocLargerThanHeap

    31  */

    32 

    33 import jdk.test.lib.process.OutputAnalyzer;

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

    35 

    36 public class TestAllocLargerThanHeap {

    37 

    38     static final int SIZE = 16 * 1024 * 1024;

    39 

    40     static volatile Object sink;

    41 

    42     public static void work() throws Exception {

    43         sink = new Object[SIZE];

    44     }

    45 

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

    47         if (args.length > 0) {

    48             work();

    49             return;

    50         }

    51 

    52         {

    53             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    54                     "-Xmx16m",

    55                     "-XX:+UnlockExperimentalVMOptions",

    56                     "-XX:+UseShenandoahGC",

    57                     TestAllocLargerThanHeap.class.getName(),

    58                     "test");

    59 

    60             OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());

    61             analyzer.shouldHaveExitValue(1);

    62             analyzer.shouldContain("java.lang.OutOfMemoryError: Java heap space");

    63         }

    64 

    65         {

    66             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    67                     "-Xmx1g",

    68                     "-XX:+UnlockExperimentalVMOptions",

    69                     "-XX:+UseShenandoahGC",

    70                     TestAllocLargerThanHeap.class.getName(),

    71                     "test");

    72 

    73             OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());

    74             analyzer.shouldHaveExitValue(0);

    75             analyzer.shouldNotContain("java.lang.OutOfMemoryError: Java heap space");

    76         }

    77     }

    78 }