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 import com.oracle.java.testlibrary.Asserts;
  25 import java.lang.management.MemoryPoolMXBean;
  26 import sun.hotspot.code.BlobType;
  27 
  28 /*
  29  * @test UsageThresholdExceededTest
  30  * @library /testlibrary /../../test/lib
  31  * @build UsageThresholdExceededTest
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox 
  33  *     sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 
  35  *     -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache -XX:-UseCodeCacheFlushing 
  36  *     -XX:-MethodFlushing -XX:CompileCommand=compileonly,null::* 
  37  *     UsageThresholdExceededTest
  38  * @summary verifying that getUsageThresholdCount() returns correct value 
  39  *     after threshold has been hit
  40  */
  41 public class UsageThresholdExceededTest {
  42 
  43     protected final int iterations;
  44     private final BlobType btype;
  45 
  46     public UsageThresholdExceededTest(BlobType btype, int iterations) {
  47         this.btype = btype;
  48         this.iterations = iterations;
  49     }
  50 
  51     public static void main(String[] args) {
  52         int iterationsCount = 
  53             Integer.getInteger("com.oracle.java.testlibrary.iterations", 1);
  54         for (BlobType btype : BlobType.getAvailable()) {
  55             if (CodeCacheUtils.isCodeHeapPredictable(btype)) {
  56                 new UsageThresholdExceededTest(btype, iterationsCount)
  57                         .runTest();
  58             }
  59         }
  60     }
  61 
  62     protected void runTest() {
  63         MemoryPoolMXBean bean = btype.getMemoryPool();
  64         long oldValue = bean.getUsageThresholdCount();
  65         for (int i = 0; i < iterations; i++) {
  66             CodeCacheUtils.hitUsageThreshold(bean, btype);
  67         }
  68         Asserts.assertEQ(bean.getUsageThresholdCount(), oldValue + iterations,
  69                 "Unexpected threshold usage count");
  70         System.out.printf("INFO: Scenario finished successfully for %s%n",
  71                 bean.getName());
  72     }
  73 }