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