1 /*

     2  * Copyright (c) 2017, 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 package org.graalvm.compiler.hotspot.replacements;

    24 

    25 import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_VMCONFIG;

    26 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.CLASS_ARRAY_KLASS_LOCATION;

    27 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.arrayKlassOffset;

    28 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.loadKlassFromObject;

    29 

    30 import java.lang.reflect.Array;

    31 

    32 import org.graalvm.compiler.api.directives.GraalDirectives;

    33 import org.graalvm.compiler.api.replacements.ClassSubstitution;

    34 import org.graalvm.compiler.api.replacements.MethodSubstitution;

    35 import org.graalvm.compiler.nodes.java.DynamicNewArrayNode;

    36 

    37 // JaCoCo Exclude

    38 

    39 /**

    40  * Substitutions for {@link Array} methods.

    41  */

    42 @ClassSubstitution(Array.class)

    43 public class HotSpotArraySubstitutions {

    44 

    45     @MethodSubstitution

    46     public static Object newInstance(Class<?> componentType, int length) {

    47         if (componentType == null || loadKlassFromObject(componentType, arrayKlassOffset(INJECTED_VMCONFIG), CLASS_ARRAY_KLASS_LOCATION).isNull()) {

    48             // Exit the intrinsic here for the case where the array class does not exist

    49             return newInstance(componentType, length);

    50         }

    51         return DynamicNewArrayNode.newArray(GraalDirectives.guardingNonNull(componentType), length);

    52     }

    53 

    54 }