1 /*
   2  * Copyright (c) 2013, 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 java.util.function.Function;
  25 
  26 import compiler.whitebox.CompilerWhiteBoxTest;
  27 
  28 /*
  29  * @test ClearMethodStateTest
  30  * @bug 8006683 8007288 8022832
  31  * @library /testlibrary /test/lib /
  32  * @modules java.management
  33  * @build ClearMethodStateTest
  34  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+PrintCompilation ClearMethodStateTest
  37  * @summary testing of WB::clearMethodState()
  38  * @author igor.ignatyev@oracle.com
  39  */
  40 public class ClearMethodStateTest extends CompilerWhiteBoxTest {
  41 
  42     public static void main(String[] args) throws Exception {
  43         String directive =
  44                 "[{ match:\"*SimpleTestCaseHelper.*\", BackgroundCompilation: false }, " +
  45                 " { match:\"*.*\", inline:\"-*SimpleTestCaseHelper.*\"}]";
  46         if (WHITE_BOX.addCompilerDirective(directive) != 2) {
  47             throw new RuntimeException("Could not add directive");
  48         }
  49         try {
  50             CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);
  51         } finally {
  52             WHITE_BOX.removeCompilerDirective(2);
  53         }
  54     }
  55 
  56     private ClearMethodStateTest(TestCase testCase) {
  57         super(testCase);
  58         // to prevent inlining of #method
  59         WHITE_BOX.testSetDontInlineMethod(method, true);
  60     }
  61 
  62 
  63     /**
  64      * Tests {@code WB::clearMethodState()} by calling it before/after
  65      * compilation. For non-tiered, checks that counters will be rested after
  66      * clearing of method state.
  67      *
  68      * @throws Exception if one of the checks fails.
  69      */
  70     @Override
  71     protected void test() throws Exception {
  72 
  73         checkNotCompiled();
  74         compile();
  75         WHITE_BOX.clearMethodState(method);
  76         checkCompiled();
  77         WHITE_BOX.clearMethodState(method);
  78         deoptimize();
  79         checkNotCompiled();
  80 
  81         if (testCase.isOsr()) {
  82             // part test isn't applicable for OSR test case
  83             return;
  84         }
  85         if (!TIERED_COMPILATION) {
  86             WHITE_BOX.clearMethodState(method);
  87             compile(COMPILE_THRESHOLD);
  88             checkCompiled();
  89 
  90             deoptimize();
  91             checkNotCompiled();
  92             WHITE_BOX.clearMethodState(method);
  93 
  94             // invoke method one less time than needed to compile
  95             if (COMPILE_THRESHOLD > 1) {
  96                 compile(COMPILE_THRESHOLD - 1);
  97                 checkNotCompiled();
  98             } else {
  99                 System.err.println("Warning: 'CompileThreshold' <= 1");
 100             }
 101 
 102             compile(1);
 103             checkCompiled();
 104         } else {
 105             System.err.println(
 106                     "Warning: part of test is not applicable in Tiered");
 107         }
 108     }
 109 }