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.vm.ci/jdk.vm.ci.hotspot

    34  *          jdk.vm.ci/jdk.vm.ci.code

    35  * @build jdk.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 }