1 /*
   2  * Copyright (c) 2014, 2016, 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 import jdk.test.lib.Asserts;
  25 import jdk.test.lib.Platform;
  26 import sun.hotspot.WhiteBox;
  27 
  28 /**
  29  * @test
  30  * @summary Verifies that Platform::isTieredSupported returns correct value.
  31  * @library /test/lib
  32  * @modules java.base/jdk.internal.misc
  33  *          java.management
  34  * @build sun.hotspot.WhiteBox
  35  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  36  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  37  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  38  *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation
  39  *                   TestPlatformIsTieredSupported
  40  */
  41 public class TestPlatformIsTieredSupported {
  42     public static void main(String args[]) {
  43         WhiteBox whiteBox = WhiteBox.getWhiteBox();
  44         boolean tieredCompilation = whiteBox.getBooleanVMFlag(
  45                 "TieredCompilation");
  46         Asserts.assertEQ(Platform.isTieredSupported(), tieredCompilation,
  47                 "Platform::isTieredSupported should report the same value as "
  48                         + "TieredCompilation flag's value when "
  49                         + "+TieredCompilation was explicitly passed to JVM.");
  50     }
  51 }