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 UsageThresholdNotExceededTest
  26  * @summary verifying that usage threshold not exceeded while allocating less
  27  *     than usage threshold
  28  * @library /testlibrary /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  *
  32  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  33  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @build compiler.codecache.jmx.UsageThresholdNotExceededTest
  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.UsageThresholdNotExceededTest
  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.UsageThresholdNotExceededTest
  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 UsageThresholdNotExceededTest {
  54 
  55     private final BlobType btype;
  56 
  57     public UsageThresholdNotExceededTest(BlobType btype) {
  58         this.btype = btype;
  59     }
  60 
  61     public static void main(String[] args) {
  62         for (BlobType btype : BlobType.getAvailable()) {
  63             new UsageThresholdNotExceededTest(btype).runTest();
  64         }
  65     }
  66 
  67     protected void runTest() {
  68         MemoryPoolMXBean bean = btype.getMemoryPool();
  69         long initialThresholdCount = bean.getUsageThresholdCount();
  70         long initialUsage = bean.getUsage().getUsed();
  71 
  72         bean.setUsageThreshold(initialUsage + 1 + CodeCacheUtils.MIN_ALLOCATION);
  73         long size = CodeCacheUtils.getHeaderSize(btype);
  74 
  75         CodeCacheUtils.WB.allocateCodeBlob(Math.max(0, CodeCacheUtils.MIN_ALLOCATION
  76                 - size), btype.id);
  77         // a gc cycle triggers usage threshold recalculation
  78         CodeCacheUtils.WB.fullGC();
  79         CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), initialThresholdCount,
  80                 String.format("Usage threshold was hit: %d times for %s. "
  81                         + "Threshold value: %d with current usage: %d",
  82                         bean.getUsageThresholdCount(), bean.getName(),
  83                         bean.getUsageThreshold(), bean.getUsage().getUsed()));
  84         System.out.println("INFO: Case finished successfully for " + bean.getName());
  85     }
  86 }