| /* |
| * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8059100 |
| * @summary Test that you can decrease NMT tracking level but not increase it. |
| * @key nmt |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * @build sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ChangeTrackingLevel |
| */ |
| |
| import sun.hotspot.WhiteBox; |
| |
| public class ChangeTrackingLevel { |
| |
| public static WhiteBox wb = WhiteBox.getWhiteBox(); |
| public static void main(String args[]) throws Exception { |
| boolean testChangeLevel = wb.NMTChangeTrackingLevel(); |
| if (testChangeLevel) { |
| System.out.println("NMT level change test passed."); |
| } else { |
| // it also fails if the VM asserts. |
| throw new RuntimeException("NMT level change test failed"); |
| } |
| } |
| }; |