1 /*

     2  * Copyright (c) 2013, 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 ClearMethodStateTest

    26  * @bug 8006683 8007288 8022832

    27  * @summary testing of WB::clearMethodState()

    28  * @library /test/lib /

    29  * @modules java.base/jdk.internal.misc

    30  *          java.management

    31  * @build sun.hotspot.WhiteBox

    32  * @run driver ClassFileInstaller sun.hotspot.WhiteBox

    33  *                                sun.hotspot.WhiteBox$WhiteBoxPermission

    34  * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions

    35  *                   -XX:+WhiteBoxAPI -XX:+PrintCompilation -XX:-UseCounterDecay

    36  *                   compiler.whitebox.ClearMethodStateTest

    37  */

    38 

    39 package compiler.whitebox;

    40 

    41 public class ClearMethodStateTest extends CompilerWhiteBoxTest {

    42 

    43     public static void main(String[] args) throws Exception {

    44         String directive =

    45                 "[{ match:\"*SimpleTestCaseHelper.*\", BackgroundCompilation: false }, " +

    46                 " { match:\"*.*\", inline:\"-*SimpleTestCaseHelper.*\"}]";

    47         if (WHITE_BOX.addCompilerDirective(directive) != 2) {

    48             throw new RuntimeException("Could not add directive");

    49         }

    50         try {

    51             CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);

    52         } finally {

    53             WHITE_BOX.removeCompilerDirective(2);

    54         }

    55     }

    56 

    57     private ClearMethodStateTest(TestCase testCase) {

    58         super(testCase);

    59         // to prevent inlining of #method

    60         WHITE_BOX.testSetDontInlineMethod(method, true);

    61     }

    62 

    63 

    64     /**

    65      * Tests {@code WB::clearMethodState()} by calling it before/after

    66      * compilation. For non-tiered, checks that counters will be rested after

    67      * clearing of method state.

    68      *

    69      * @throws Exception if one of the checks fails.

    70      */

    71     @Override

    72     protected void test() throws Exception {

    73 

    74         checkNotCompiled();

    75         compile();

    76         WHITE_BOX.clearMethodState(method);

    77         checkCompiled();

    78         WHITE_BOX.clearMethodState(method);

    79         deoptimize();

    80         checkNotCompiled();

    81 

    82         if (testCase.isOsr()) {

    83             // part test isn't applicable for OSR test case

    84             return;

    85         }

    86         if (!TIERED_COMPILATION) {

    87             WHITE_BOX.clearMethodState(method);

    88             compile(COMPILE_THRESHOLD);

    89             checkCompiled();

    90 

    91             deoptimize();

    92             checkNotCompiled();

    93             WHITE_BOX.clearMethodState(method);

    94 

    95             // invoke method one less time than needed to compile

    96             if (COMPILE_THRESHOLD > 1) {

    97                 compile(COMPILE_THRESHOLD - 1);

    98                 checkNotCompiled();

    99             } else {

   100                 System.err.println("Warning: 'CompileThreshold' <= 1");

   101             }

   102 

   103             compile(1);

   104             checkCompiled();

   105         } else {

   106             System.err.println(

   107                     "Warning: part of test is not applicable in Tiered");

   108         }

   109     }

   110 }