1 /*
   2  * Copyright (c) 2013, 2014, 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 /*
  27  * @test ClearMethodStateTest
  28  * @bug 8006683 8007288 8022832
  29  * @library /testlibrary /testlibrary/whitebox
  30  * @ignore 8046268
  31  * @build ClearMethodStateTest
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* ClearMethodStateTest
  35  * @summary testing of WB::clearMethodState()
  36  * @author igor.ignatyev@oracle.com
  37  */
  38 public class ClearMethodStateTest extends CompilerWhiteBoxTest {
  39 
  40     public static void main(String[] args) throws Exception {
  41         CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);
  42     }
  43 
  44     private ClearMethodStateTest(TestCase testCase) {
  45         super(testCase);
  46         // to prevent inlining of #method
  47         WHITE_BOX.testSetDontInlineMethod(method, true);
  48     }
  49 
  50 
  51     /**
  52      * Tests {@code WB::clearMethodState()} by calling it before/after
  53      * compilation. For non-tiered, checks that counters will be rested after
  54      * clearing of method state.
  55      *
  56      * @throws Exception if one of the checks fails.
  57      */
  58     @Override
  59     protected void test() throws Exception {
  60         checkNotCompiled();
  61         compile();
  62         WHITE_BOX.clearMethodState(method);
  63         checkCompiled();
  64         WHITE_BOX.clearMethodState(method);
  65         deoptimize();
  66         checkNotCompiled();
  67 
  68         if (testCase.isOsr()) {
  69             // part test isn't applicable for OSR test case
  70             return;
  71         }
  72         if (!TIERED_COMPILATION) {
  73             WHITE_BOX.clearMethodState(method);
  74             compile(COMPILE_THRESHOLD);
  75             checkCompiled();
  76 
  77             deoptimize();
  78             checkNotCompiled();
  79             WHITE_BOX.clearMethodState(method);
  80 
  81             // invoke method one less time than needed to compile
  82             if (COMPILE_THRESHOLD > 1) {
  83                 compile(COMPILE_THRESHOLD - 1);
  84                 checkNotCompiled();
  85             } else {
  86                 System.err.println("Warning: 'CompileThreshold' <= 1");
  87             }
  88 
  89             compile(1);
  90             checkCompiled();
  91         } else {
  92             System.err.println(
  93                     "Warning: part of test is not applicable in Tiered");
  94         }
  95     }
  96 }
--- EOF ---