1 /*
   2  * Copyright (c) 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 /*
  26  * @test
  27  * @bug 8136421
  28  * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
  29  * @library /testlibrary /../../test/lib /
  30  * @compile ../common/CompilerToVMHelper.java
  31  * @build sun.hotspot.WhiteBox
  32  *        compiler.jvmci.compilerToVM.DisassembleCodeBlobTest
  33  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  34  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  35  *                              jdk.vm.ci.hotspot.CompilerToVMHelper
  36  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  37  *      -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:.
  38  *      compiler.jvmci.compilerToVM.DisassembleCodeBlobTest
  39  */
  40 
  41 package compiler.jvmci.compilerToVM;
  42 
  43 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  44 import jdk.test.lib.Asserts;
  45 import sun.hotspot.code.NMethod;
  46 
  47 import java.util.List;
  48 
  49 public class DisassembleCodeBlobTest {
  50 
  51     public static void main(String[] args) {
  52         DisassembleCodeBlobTest test
  53                 = new DisassembleCodeBlobTest();
  54         List<CompileCodeTestCase> testCases
  55                 = CompileCodeTestCase.generate(/* bci = */ -1);
  56         testCases.addAll(CompileCodeTestCase.generate(/* bci = */ 0));
  57         testCases.forEach(test::check);
  58         test.checkNull();
  59     }
  60 
  61     private void checkNull() {
  62         String str = CompilerToVMHelper.disassembleCodeBlob(0L);
  63         Asserts.assertNull(str, "not null string returned for null pointer");
  64     }
  65 
  66     private void check(CompileCodeTestCase testCase) {
  67         System.out.println(testCase);
  68         // to have a clean state
  69         NMethod nMethod = testCase.deoptimizeAndCompile();
  70         if (nMethod == null) {
  71             throw new Error(testCase + " : method is not compiled");
  72         }
  73         String str = CompilerToVMHelper.disassembleCodeBlob(nMethod.address);
  74         if (str != null) {
  75             Asserts.assertGT(str.length(), 0,
  76                    testCase +  " : returned string has to be non-zero length");
  77         }
  78         String str2 = CompilerToVMHelper.disassembleCodeBlob(nMethod.address);
  79         Asserts.assertEQ(str, str2,
  80                 testCase + " : 2nd invocation returned different value");
  81     }
  82 }