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// Copyright (c) 2014 Baidu, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef BVAR_DETAIL_IS_ATOMICAL_H
#define BVAR_DETAIL_IS_ATOMICAL_H
#include "butil/type_traits.h"
namespace bvar {
namespace detail {
template <class T> struct is_atomical
: butil::integral_constant<bool, (butil::is_integral<T>::value ||
butil::is_floating_point<T>::value)
// FIXME(gejun): Not work in gcc3.4
// butil::is_enum<T>::value ||
// NOTE(gejun): Ops on pointers are not
// atomic generally
// butil::is_pointer<T>::value
> {};
template <class T> struct is_atomical<const T> : is_atomical<T> { };
template <class T> struct is_atomical<volatile T> : is_atomical<T> { };
template <class T> struct is_atomical<const volatile T> : is_atomical<T> { };
} // namespace detail
} // namespace bvar
#endif