1 /*
   2  * Copyright (c) 2014, 2015, 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 java.lang.management.MemoryPoolMXBean;
  26 import sun.hotspot.code.BlobType;
  27 
  28 /*
  29  * @test UsageThresholdExceededTest
  30  * @library /testlibrary /test/lib
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build UsageThresholdExceededTest
  34  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  35  *     sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *     -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache -XX:-UseCodeCacheFlushing
  38  *     -XX:-MethodFlushing -XX:CompileCommand=compileonly,null::*
  39  *     UsageThresholdExceededTest
  40  * @summary verifying that getUsageThresholdCount() returns correct value
  41  *     after threshold has been hit
  42  */
  43 public class UsageThresholdExceededTest {
  44 
  45     protected final int iterations;
  46     private final BlobType btype;
  47 
  48     public UsageThresholdExceededTest(BlobType btype, int iterations) {
  49         this.btype = btype;
  50         this.iterations = iterations;
  51     }
  52 
  53     public static void main(String[] args) {
  54         int iterationsCount = Integer.getInteger("jdk.test.lib.iterations", 1);
  55         for (BlobType btype : BlobType.getAvailable()) {
  56             new UsageThresholdExceededTest(btype, iterationsCount).runTest();
  57         }
  58     }
  59 
  60     protected void runTest() {
  61         MemoryPoolMXBean bean = btype.getMemoryPool();
  62         long oldValue = bean.getUsageThresholdCount();
  63         for (int i = 0; i < iterations; i++) {
  64             CodeCacheUtils.hitUsageThreshold(bean, btype);
  65         }
  66         CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), oldValue + iterations,
  67                 "Unexpected threshold usage count");
  68         System.out.printf("INFO: Scenario finished successfully for %s%n", bean.getName());
  69     }
  70 }