| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_METAPROGRAMMING_CONDITIONAL_HPP |
| #define SHARE_VM_METAPROGRAMMING_CONDITIONAL_HPP |
| |
| #include "memory/allocation.hpp" |
| |
| // This trait evaluates its typedef called "type" to TrueType iff the condition |
| // is true. Otherwise it evaluates to FalseType. |
| |
| template <bool condition, typename TrueType, typename FalseType> |
| struct Conditional: AllStatic { |
| typedef TrueType type; |
| }; |
| |
| template <typename TrueType, typename FalseType> |
| struct Conditional<false, TrueType, FalseType>: AllStatic { |
| typedef FalseType type; |
| }; |
| |
| #endif // SHARE_VM_METAPROGRAMMING_CONDITIONAL_HPP |
