libcxx/test/benchmarks/system_error.bench.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03
  10
  11 #include <string>
  12 #include <system_error>
  13
  14 #include "benchmark/benchmark.h"
  15
  16 static void BM_SystemErrorWithMessage(benchmark::State& state) {
  17   for (auto _ : state) {
  18     std::error_code ec{};
  19     benchmark::DoNotOptimize(std::system_error{ec, ""});
  20   }
  21 }
  22 BENCHMARK(BM_SystemErrorWithMessage);
  23
  24 static void BM_SystemErrorWithoutMessage(benchmark::State& state) {
  25   for (auto _ : state) {
  26     std::error_code ec{};
  27     benchmark::DoNotOptimize(std::system_error{ec});
  28   }
  29 }
  30 BENCHMARK(BM_SystemErrorWithoutMessage);
  31
  32 BENCHMARK_MAIN();