1 /*
   2  * Copyright (c) 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 8152341
  27  * @requires vm.jvmci
  28  * @library /test/lib /compiler/jvmci/jdk.vm.ci.hotspot.test/src
  29  * @modules jdk.vm.ci/jdk.vm.ci.meta
  30  *          jdk.vm.ci/jdk.vm.ci.common
  31  *          jdk.vm.ci/jdk.vm.ci.runtime
  32  *          jdk.vm.ci/jdk.vm.ci.hotspot
  33  *          java.base/jdk.internal.misc
  34  * @run testng/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  35  *      jdk.vm.ci.hotspot.test.MemoryAccessProviderTest
  36  */
  37 
  38 package jdk.vm.ci.hotspot.test;
  39 
  40 import jdk.vm.ci.meta.Constant;
  41 import jdk.vm.ci.meta.JavaKind;
  42 import jdk.vm.ci.meta.MemoryAccessProvider;
  43 import jdk.vm.ci.runtime.JVMCI;
  44 import org.testng.Assert;
  45 import org.testng.annotations.Test;
  46 
  47 public class MemoryAccessProviderTest {
  48     private static final MemoryAccessProvider PROVIDER = JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection().getMemoryAccessProvider();
  49 
  50     @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class)
  51     public void testPositiveReadPrimitiveConstant(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  52         Assert.assertEquals(PROVIDER.readPrimitiveConstant(kind, base, offset, bitsCount), expected, "Failed to read constant");
  53     }
  54 
  55     @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class, expectedExceptions = {IllegalArgumentException.class})
  56     public void testReadPrimitiveConstantNullBase(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  57         Assert.assertNull(PROVIDER.readPrimitiveConstant(kind, null, offset, bitsCount), "Unexpected value for null base");
  58     }
  59 
  60     @Test(dataProvider = "negative", dataProviderClass = MemoryAccessProviderData.class, expectedExceptions = {IllegalArgumentException.class})
  61     public void testNegativeReadPrimitiveConstant(JavaKind kind, Constant base) {
  62         PROVIDER.readPrimitiveConstant(kind, base, 0L, kind == null ? 0 : kind.getBitCount());
  63     }
  64 
  65     @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class, expectedExceptions = {IllegalArgumentException.class})
  66     public void testObjectReadPrimitiveConstant(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  67         PROVIDER.readPrimitiveConstant(kind, base, 0L, bitsCount);
  68     }
  69 
  70     @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class, expectedExceptions = {IllegalArgumentException.class})
  71     public void testReadPrimitiveConstantLessBits(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  72         PROVIDER.readPrimitiveConstant(kind, base, offset, bitsCount - 1);
  73     }
  74 
  75     @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
  76     public void testPositiveReadObjectConstant(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  77         Assert.assertEquals(PROVIDER.readObjectConstant(base, offset), expected, "Unexpected result");
  78     }
  79 
  80     @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
  81     public void testNegativeReadObjectConstantNullBase(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  82         Assert.assertNull(PROVIDER.readObjectConstant(null, offset), "Unexpected return");
  83     }
  84 
  85     @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
  86     public void testNegativeReadObjectConstantWrongOffset(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  87         Assert.assertNull(PROVIDER.readObjectConstant(base, offset + 1), "Expected null");
  88     }
  89 
  90     @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class)
  91     public void testNegativeReadObjectConstantPrimitiveBase(JavaKind kind, Constant base, Long offset, Object expected, int bitsCount) {
  92         Assert.assertNull(PROVIDER.readObjectConstant(base, offset), "Expected null");
  93     }
  94 }