1 /*
   2  * Copyright (c) 2017, 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
  26  * @bug 8136421
  27  * @requires vm.jvmci
  28  * @library / /test/lib
  29  *          ../common/patches
  30  * @modules java.base/jdk.internal.misc
  31  *          java.base/jdk.internal.org.objectweb.asm
  32  *          java.base/jdk.internal.org.objectweb.asm.tree
  33  *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
  34  *          jdk.internal.vm.ci/jdk.vm.ci.code
  35  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
  36  *        sun.hotspot.WhiteBox
  37  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  38  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  39  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  40  *     -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -Xbatch

  41  *     compiler.jvmci.compilerToVM.IsMatureVsReprofileTest
  42  */
  43 
  44 package compiler.jvmci.compilerToVM;
  45 
  46 import compiler.jvmci.common.CTVMUtilities;
  47 import compiler.jvmci.common.testcases.SimpleClass;
  48 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  49 import jdk.test.lib.Asserts;
  50 import sun.hotspot.WhiteBox;
  51 import compiler.whitebox.CompilerWhiteBoxTest;
  52 import java.lang.reflect.Executable;
  53 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  54 import jdk.test.lib.Platform;
  55 
  56 public class IsMatureVsReprofileTest {
  57     private static final WhiteBox WB = WhiteBox.getWhiteBox();
  58     private static final boolean TIERED = WB.getBooleanVMFlag("TieredCompilation");
  59     private static final boolean IS_XCOMP = Platform.isComp();
  60 
  61     public static void main(String[] args) throws Exception {
  62         new IsMatureVsReprofileTest().test();
  63     }
  64 
  65     public void test() throws Exception {
  66         SimpleClass sclass = new SimpleClass();
  67         Executable method = SimpleClass.class.getDeclaredMethod("testMethod");
  68         long metaspaceMethodData = WB.getMethodData(method);
  69         Asserts.assertEQ(metaspaceMethodData, 0L, "MDO should be null for a "
  70                  + "never invoked method");
  71         boolean isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
  72         Asserts.assertFalse(isMature, "null MDO can't be mature");
  73         for (int i = 0; i < CompilerWhiteBoxTest.THRESHOLD; i++) {
  74             sclass.testMethod();
  75         }
  76         Asserts.assertTrue(WB.isMethodCompiled(method),
  77                 "Method should be compiled");
  78         metaspaceMethodData = WB.getMethodData(method);
  79         Asserts.assertNE(metaspaceMethodData, 0L,
  80                 "Multiple times invoked method should have MDO");
  81         isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
  82         /* a method is not mature for -Xcomp and -Tiered,
  83            see NonTieredCompPolicy::is_mature */
  84         Asserts.assertEQ(!IS_XCOMP || TIERED, isMature,
  85                 "Unexpected isMature state for compiled method");
  86         HotSpotResolvedJavaMethod resolvedMethod
  87                 = CTVMUtilities.getResolvedMethod(method);
  88         CompilerToVMHelper.reprofile(resolvedMethod);
  89         Asserts.assertFalse(WB.isMethodCompiled(method),
  90                 "Unexpected method compilation state after reprofile");
  91         metaspaceMethodData = WB.getMethodData(method);
  92         isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
  93         Asserts.assertNE(metaspaceMethodData, 0L,
  94                 "Got null MDO after reprofile");
  95         Asserts.assertEQ(TIERED && IS_XCOMP, isMature,
  96                 "Got unexpected isMature state after reprofiling");
  97     }
  98 }
--- EOF ---