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