| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef BENCHMARK_UTILITIES_H |
| #define BENCHMARK_UTILITIES_H |
| |
| #include <cassert> |
| #include <type_traits> |
| |
| #include "benchmark/benchmark.h" |
| |
| namespace UtilitiesInternal { |
| template <class Container> |
| auto HaveDataImpl(int) -> decltype((std::declval<Container&>().data(), std::true_type{})); |
| template <class Container> |
| auto HaveDataImpl(long) -> std::false_type; |
| template <class T> |
| using HasData = decltype(HaveDataImpl<T>(0)); |
| } // namespace UtilitiesInternal |
| |
| template <class Container, std::enable_if_t<UtilitiesInternal::HasData<Container>::value>* = nullptr> |
| void DoNotOptimizeData(Container& c) { |
| benchmark::DoNotOptimize(c.data()); |
| } |
| |
| template <class Container, std::enable_if_t<!UtilitiesInternal::HasData<Container>::value>* = nullptr> |
| void DoNotOptimizeData(Container& c) { |
| benchmark::DoNotOptimize(&c); |
| } |
| |
| #endif // BENCHMARK_UTILITIES_H |