libcxx/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 #include <string>
  10 #include <system_error>
  11
  12 #include "benchmark/benchmark.h"
  13
  14 static void BM_SystemErrorWithMessage(benchmark::State& state) {
  15   for (auto _ : state) {
  16     std::error_code ec{};
  17     benchmark::DoNotOptimize(std::system_error{ec, ""});
  18   }
  19 }
  20 BENCHMARK(BM_SystemErrorWithMessage);
  21
  22 static void BM_SystemErrorWithoutMessage(benchmark::State& state) {
  23   for (auto _ : state) {
  24     std::error_code ec{};
  25     benchmark::DoNotOptimize(std::system_error{ec});
  26   }
  27 }
  28 BENCHMARK(BM_SystemErrorWithoutMessage);
  29
  30 BENCHMARK_MAIN();