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 /*
  25  * @test UsageThresholdIncreasedTest
  26  * @summary verifying that threshold hasn't been hit after allocation smaller
  27  *     than threshold value and that threshold value can be changed
  28  * @library /test/lib /
  29  * @requires vm.flavor != "minimal"
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *     -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing  -XX:-MethodFlushing
  37  *     -XX:CompileCommand=compileonly,null::*
  38  *     -XX:-SegmentedCodeCache
  39  *     compiler.codecache.jmx.UsageThresholdIncreasedTest
  40  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  41  *     -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing  -XX:-MethodFlushing
  42  *     -XX:CompileCommand=compileonly,null::*
  43  *     -XX:+SegmentedCodeCache
  44  *     compiler.codecache.jmx.UsageThresholdIncreasedTest
  45  */
  46 
  47 package compiler.codecache.jmx;
  48 
  49 import sun.hotspot.code.BlobType;
  50 
  51 import java.lang.management.MemoryPoolMXBean;
  52 
  53 public class UsageThresholdIncreasedTest {
  54 
  55     private static final int ALLOCATION_STEP = 5;
  56     private static final long THRESHOLD_STEP = ALLOCATION_STEP
  57             * CodeCacheUtils.MIN_ALLOCATION;
  58     private final BlobType btype;
  59 
  60     public UsageThresholdIncreasedTest(BlobType btype) {
  61         this.btype = btype;
  62     }
  63 
  64     public static void main(String[] args) {
  65         for (BlobType btype : BlobType.getAvailable()) {
  66             new UsageThresholdIncreasedTest(btype).runTest();
  67         }
  68     }
  69 
  70     private void checkUsageThresholdCount(MemoryPoolMXBean bean, long count){
  71         CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), count,
  72                 String.format("Usage threshold was hit: %d times for %s "
  73                         + "Threshold value: %d with current usage: %d",
  74                         bean.getUsageThresholdCount(), bean.getName(),
  75                         bean.getUsageThreshold(), bean.getUsage().getUsed()));
  76     }
  77 
  78     protected void runTest() {
  79         long headerSize = CodeCacheUtils.getHeaderSize(btype);
  80         long allocationUnit = Math.max(0, CodeCacheUtils.MIN_ALLOCATION - headerSize);
  81         MemoryPoolMXBean bean = btype.getMemoryPool();
  82         long initialCount = bean.getUsageThresholdCount();
  83         long initialSize = bean.getUsage().getUsed();
  84         bean.setUsageThreshold(initialSize + THRESHOLD_STEP);
  85         for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
  86             CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
  87         }
  88         // Usage threshold check is triggered by GC cycle, so, call it
  89         CodeCacheUtils.WB.fullGC();
  90         checkUsageThresholdCount(bean, initialCount);
  91         long filledSize = bean.getUsage().getUsed();
  92         bean.setUsageThreshold(filledSize + THRESHOLD_STEP);
  93         for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
  94             CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
  95         }
  96         CodeCacheUtils.WB.fullGC();
  97         checkUsageThresholdCount(bean, initialCount);
  98         System.out.println("INFO: Case finished successfully for " + bean.getName());
  99     }
 100 }