1 /*
   2  * Copyright (c) 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 
  25 import sun.hotspot.code.NMethod;
  26 
  27 /*
  28  * @test GetNMethodTest
  29  * @bug 8038240
  30  * @library /testlibrary /testlibrary/whitebox

  31  * @build GetNMethodTest
  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::* GetNMethodTest
  35  * @summary testing of WB::getNMethod()
  36  * @author igor.ignatyev@oracle.com
  37  */
  38 public class GetNMethodTest extends CompilerWhiteBoxTest {
  39     public static void main(String[] args) throws Exception {
  40         CompilerWhiteBoxTest.main(GetNMethodTest::new, args);
  41     }
  42 
  43     private GetNMethodTest(TestCase testCase) {
  44         super(testCase);
  45         // to prevent inlining of #method
  46         WHITE_BOX.testSetDontInlineMethod(method, true);
  47     }
  48 
  49     @Override
  50     protected void test() throws Exception {
  51         checkNotCompiled();
  52 
  53         compile();
  54         checkCompiled();
  55         NMethod nmethod = NMethod.get(method, testCase.isOsr());
  56         if (IS_VERBOSE) {
  57             System.out.println("nmethod = " + nmethod);
  58         }
  59         if (nmethod == null) {
  60             throw new RuntimeException("nmethod of compiled method is null");
  61         }
  62         if (nmethod.insts.length == 0) {
  63             throw new RuntimeException("compiled method's instructions is empty");
  64         }
  65         deoptimize();
  66         checkNotCompiled();
  67         nmethod = NMethod.get(method, testCase.isOsr());
  68         if (nmethod != null) {
  69             throw new RuntimeException("nmethod of non-compiled method isn't null");
  70         }
  71     }
  72 }
--- EOF ---