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 PeakUsageTest
  30  * @library /testlibrary /../../test/lib
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  * @build PeakUsageTest
  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
  38  *     -XX:CompileCommand=compileonly,null::* PeakUsageTest
  39  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  40  *     -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache
  41  *     -XX:CompileCommand=compileonly,null::* PeakUsageTest
  42  * @summary testing of getPeakUsage() and resetPeakUsage for
  43  *     segmented code cache
  44  */
  45 public class PeakUsageTest {
  46 
  47     private final BlobType btype;
  48 
  49     public PeakUsageTest(BlobType btype) {
  50         this.btype = btype;
  51     }
  52 
  53     public static void main(String[] args) {
  54         for (BlobType btype : BlobType.getAvailable()) {
  55             if (CodeCacheUtils.isCodeHeapPredictable(btype)) {
  56                 new PeakUsageTest(btype).runTest();
  57             }
  58         }
  59     }
  60 
  61     protected void runTest() {
  62         MemoryPoolMXBean bean = btype.getMemoryPool();
  63         bean.resetPeakUsage();
  64         long addr = CodeCacheUtils.WB.allocateCodeBlob(
  65                 CodeCacheUtils.ALLOCATION_SIZE, btype.id);
  66         long newPeakUsage = bean.getPeakUsage().getUsed();
  67         try {
  68             Asserts.assertEQ(newPeakUsage, bean.getUsage().getUsed(),
  69                     "Peak usage does not match usage after allocation for "
  70                     + bean.getName());
  71         } finally {
  72             if (addr != 0) {
  73                 CodeCacheUtils.WB.freeCodeBlob(addr);
  74             }
  75         }
  76         Asserts.assertEQ(newPeakUsage, bean.getPeakUsage().getUsed(),
  77                 "Code cache peak usage has changed after usage decreased for "
  78                 + bean.getName());
  79         bean.resetPeakUsage();
  80         Asserts.assertEQ(bean.getPeakUsage().getUsed(),
  81                 bean.getUsage().getUsed(),
  82                 "Code cache peak usage is not equal to usage after reset for "
  83                 + bean.getName());
  84         long addr2 = CodeCacheUtils.WB.allocateCodeBlob(
  85                 CodeCacheUtils.ALLOCATION_SIZE, btype.id);
  86         try {
  87             Asserts.assertEQ(bean.getPeakUsage().getUsed(),
  88                     bean.getUsage().getUsed(),
  89                     "Code cache peak usage is not equal to usage after fresh "
  90                     + "allocation for " + bean.getName());
  91         } finally {
  92             if (addr2 != 0) {
  93                 CodeCacheUtils.WB.freeCodeBlob(addr2);
  94             }
  95         }
  96         System.out.printf("INFO: Scenario finished successfully for %s%n",
  97                 bean.getName());
  98     }
  99 }