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