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