1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
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  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
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  17  * You should have received a copy of the GNU General Public License version
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  24  */
  25 package jdk.jfr.event.gc.detailed;
  26 
  27 import jdk.testlibrary.jfr.StressAllocationGCEvents;
  28 /**
  29  * @test
  30  * @summary Test allocates humongous objects with G1 GC. Objects
  31  * considered humongous when it allocates equals or more than one region. As
  32  * we're passing the size of byte array we need adjust it that entire structure
  33  * fits exactly to one region, if not - G1 will allocate another almost empty
  34  * region as a continue of humongous. Thus we will exhaust memory very fast and
  35  * test will fail with OOME.
  36  * @requires vm.gc == "null" | vm.gc == "G1"
  37  * @library /lib/testlibrary
  38  * @run main/othervm -XX:+UseG1GC -XX:MaxNewSize=5m -Xmx256m -XX:G1HeapRegionSize=1048576 jdk.jfr.event.gc.detailed.TestStressBigAllocationGCEventsWithG1 1048544
  39  */
  40 public class TestStressBigAllocationGCEventsWithG1 {
  41 
  42     public static void main(String[] args) throws Exception {
  43         new StressAllocationGCEvents().run(args);
  44     }
  45 }