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