1 /*
   2  * Copyright (c) 2015, 2016, 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
  26  * @bug 8136421
  27  * @requires vm.jvmci
  28  * @library /test/lib /
  29  * @library ../common/patches
  30  * @modules java.base/jdk.internal.misc
  31  * @modules java.base/jdk.internal.org.objectweb.asm
  32  *          java.base/jdk.internal.org.objectweb.asm.tree
  33  *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
  34  *          jdk.internal.vm.ci/jdk.vm.ci.code
  35  * @clean compiler.jvmci.compilerToVM.*
  36  * @compile -g DummyInterface.java
  37  * @compile -g DummyAbstractClass.java
  38  * @compile -g DummyClass.java
  39  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
  40  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

  41  *                   compiler.jvmci.compilerToVM.GetLocalVariableTableTest
  42  * @clean compiler.jvmci.compilerToVM.*
  43  */
  44 
  45 package compiler.jvmci.compilerToVM;
  46 
  47 import compiler.jvmci.common.CTVMUtilities;
  48 import jdk.test.lib.Asserts;
  49 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  50 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  51 
  52 import java.lang.reflect.Executable;
  53 import java.util.HashMap;
  54 import java.util.Map;
  55 
  56 public class GetLocalVariableTableTest {
  57 
  58     public static final int MAIN_LOCALS_COUNT = 0;
  59     public static final int INSTANCE_LOCALS_COUNT = 4;
  60     public static final int EMPTY_INSTANCE_COUNT = 1;
  61     public static final int EMPTY_STATIC_COUNT = 0;
  62     public static final int ABSTRACT_INHERIT_LOCALS_COUNT = 2;
  63     public static final int DEFAULTFUNC_LOCALS_COUNT = 4;
  64 
  65     public static void main(String[] args) {
  66         Map<Executable, Integer> testCases = createTestCases();
  67         testCases.forEach(GetLocalVariableTableTest::runSanityTest);
  68     }
  69 
  70     private static Map<Executable, Integer> createTestCases() {
  71         HashMap<Executable, Integer> methods = new HashMap<>();
  72         try {
  73             Class<?> aClass;
  74 
  75             aClass = GetLocalVariableTableTest.class;
  76             methods.put(aClass.getDeclaredMethod("main", String[].class),
  77                     MAIN_LOCALS_COUNT);
  78 
  79             aClass = DummyClass.class;
  80             methods.put(aClass.getMethod("dummyInstanceFunction"),
  81                     INSTANCE_LOCALS_COUNT);
  82             methods.put(aClass.getMethod("dummyEmptyInstanceFunction"),
  83                     EMPTY_INSTANCE_COUNT);
  84             methods.put(aClass.getMethod("dummyEmptyStaticFunction"),
  85                     EMPTY_STATIC_COUNT);
  86             methods.put(aClass.getMethod("dummyFunction"),
  87                     EMPTY_INSTANCE_COUNT);
  88             methods.put(aClass.getMethod("dummyAbstractFunction"),
  89                     ABSTRACT_INHERIT_LOCALS_COUNT);
  90 
  91             aClass = DummyInterface.class;
  92             methods.put(aClass.getMethod("dummyFunction"), EMPTY_STATIC_COUNT);
  93             methods.put(aClass.getMethod("dummyDefaultFunction", int.class,
  94                     int.class), DEFAULTFUNC_LOCALS_COUNT);
  95 
  96             aClass = DummyAbstractClass.class;
  97             methods.put(aClass.getMethod("dummyAbstractFunction"), 0);
  98         } catch (NoSuchMethodException e) {
  99             throw new Error("TEST BUG", e);
 100         }
 101         return methods;
 102     }
 103 
 104     private static void runSanityTest(Executable aMethod,
 105                                       Integer expectedTableLength) {
 106         HotSpotResolvedJavaMethod method = CTVMUtilities
 107                 .getResolvedMethod(aMethod);
 108 
 109         int tblLength = CompilerToVMHelper.getLocalVariableTableLength(method);
 110         Asserts.assertEQ(tblLength, expectedTableLength, aMethod + " : incorrect "
 111                 + "local variable table length.");
 112 
 113         long tblStart = CompilerToVMHelper.getLocalVariableTableStart(method);
 114         if (tblLength > 0) {
 115             Asserts.assertNE(tblStart, 0L, aMethod + " : local variable table starts"
 116                     + " at 0 with length " + tblLength);
 117         }
 118     }
 119 }
--- EOF ---