1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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  23 
  24 /*
  25  * @test
  26  * @bug 8000968
  27  * @key regression
  28  * @summary NPG: UseCompressedClassPointers asserts with ObjectAlignmentInBytes=32
  29  * @library /testlibrary
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  */
  33 
  34 import jdk.test.lib.*;
  35 
  36 public class CompressedKlassPointerAndOops {
  37 
  38     public static void main(String[] args) throws Exception {
  39 
  40         if (!Platform.is64bit()) {
  41             // Can't test this on 32 bit, just pass
  42             System.out.println("Skipping test on 32bit");
  43             return;
  44         }
  45 
  46         runWithAlignment(16);
  47         runWithAlignment(32);
  48         runWithAlignment(64);
  49         runWithAlignment(128);
  50     }
  51 
  52     private static void runWithAlignment(int alignment) throws Exception {
  53         ProcessBuilder pb;
  54         OutputAnalyzer output;
  55 
  56         pb = ProcessTools.createJavaProcessBuilder(
  57             "-XX:+UseCompressedClassPointers",
  58             "-XX:+UseCompressedOops",
  59             "-XX:ObjectAlignmentInBytes=" + alignment,
  60             "-version");
  61 
  62         output = new OutputAnalyzer(pb.start());
  63         output.shouldHaveExitValue(0);
  64     }
  65 }