1 /*
   2  * Copyright (c) 2014, 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 
  25 import sun.hotspot.code.BlobType;
  26 import sun.hotspot.code.NMethod;
  27 import jdk.test.lib.Asserts;
  28 import compiler.whitebox.CompilerWhiteBoxTest;
  29 
  30 /*
  31  * @test GetNMethodTest
  32  * @bug 8038240
  33  * @library /testlibrary /test/lib /
  34  * @modules java.base/jdk.internal.misc
  35  * @modules java.management
  36  * @build GetNMethodTest
  37  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  38  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  39  * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-UseCounterDecay -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* GetNMethodTest
  40  * @summary testing of WB::getNMethod()
  41  * @author igor.ignatyev@oracle.com
  42  */
  43 public class GetNMethodTest extends CompilerWhiteBoxTest {
  44     public static void main(String[] args) throws Exception {
  45         CompilerWhiteBoxTest.main(GetNMethodTest::new, args);
  46     }
  47 
  48     private GetNMethodTest(TestCase testCase) {
  49         super(testCase);
  50         // to prevent inlining of #method
  51         WHITE_BOX.testSetDontInlineMethod(method, true);
  52     }
  53 
  54     @Override
  55     protected void test() throws Exception {
  56         checkNotCompiled();
  57 
  58         compile();
  59         checkCompiled();
  60 
  61         NMethod nmethod = NMethod.get(method, testCase.isOsr());
  62         if (IS_VERBOSE) {
  63             System.out.println("nmethod = " + nmethod);
  64         }
  65         Asserts.assertNotNull(nmethod,
  66                 "nmethod of compiled method is null");
  67         Asserts.assertNotNull(nmethod.insts,
  68                 "nmethod.insts of compiled method is null");
  69         Asserts.assertGT(nmethod.insts.length, 0,
  70                 "compiled method's instructions is empty");
  71         Asserts.assertNotNull(nmethod.code_blob_type, "blob type is null");
  72         if (WHITE_BOX.getBooleanVMFlag("SegmentedCodeCache")) {
  73             Asserts.assertNE(nmethod.code_blob_type, BlobType.All);
  74             switch (nmethod.comp_level) {
  75             case 1:
  76             case 4:
  77                 checkBlockType(nmethod, BlobType.MethodNonProfiled);
  78                 break;
  79             case 2:
  80             case 3:
  81                 checkBlockType(nmethod, BlobType.MethodProfiled);
  82                 break;
  83             default:
  84                 throw new Error("unexpected comp level " + nmethod);
  85             }
  86         } else {
  87             Asserts.assertEQ(nmethod.code_blob_type, BlobType.All);
  88         }
  89 
  90         deoptimize();
  91         checkNotCompiled();
  92         nmethod = NMethod.get(method, testCase.isOsr());
  93         Asserts.assertNull(nmethod,
  94                 "nmethod of non-compiled method isn't null");
  95     }
  96 
  97     private void checkBlockType(NMethod nmethod, BlobType expectedType) {
  98         Asserts.assertEQ(nmethod.code_blob_type, expectedType,
  99                 String.format("blob_type[%s] for %d level isn't %s",
 100                         nmethod.code_blob_type, nmethod.comp_level, expectedType));
 101     }
 102 }