1 /*
   2  * Copyright (c) 2014, 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 /*
  25  * @test Test2GbHeap
  26  * @bug 8031686
  27  * @requires vm.gc=="G1" | vm.gc=="null"
  28  * @summary Regression test to ensure we can start G1 with 2gb heap.
  29  * @key gc
  30  * @key regression
  31  * @library /testlibrary
  32  */
  33 
  34 import java.util.ArrayList;
  35 
  36 import com.oracle.java.testlibrary.OutputAnalyzer;
  37 import com.oracle.java.testlibrary.ProcessTools;
  38 
  39 public class Test2GbHeap {
  40   public static void main(String[] args) throws Exception {
  41     ArrayList<String> testArguments = new ArrayList<String>();
  42 
  43     testArguments.add("-XX:+UseG1GC");
  44     testArguments.add("-Xmx2g");
  45     testArguments.add("-version");
  46 
  47     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(testArguments.toArray(new String[0]));
  48 
  49     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  50 
  51     // Avoid failing test for setups not supported.
  52     if (output.getOutput().contains("Could not reserve enough space for 2097152KB object heap")) {
  53       // Will fail on machines with too little memory (and Windows 32-bit VM), ignore such failures.
  54       output.shouldHaveExitValue(1);
  55     } else if (output.getOutput().contains("G1 GC is disabled in this release")) {
  56       // G1 is not supported on embedded, ignore such failures.
  57       output.shouldHaveExitValue(1);
  58     } else {
  59       // Normally everything should be fine.
  60       output.shouldHaveExitValue(0);
  61     }
  62   }
  63 }