| 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 <istream> |
| 12 | #include <sstream> |
| 13 | |
| 14 | #include <benchmark/benchmark.h> |
| 15 | |
| 16 | void BM_getline_string(benchmark::State& state) { |
| 17 | std::istringstream iss; |
| 18 | |
| 19 | std::string str; |
| 20 | str.reserve(res: 128); |
| 21 | iss.str(s: "A long string to let getline do some more work, making sure that longer strings are parsed fast enough"); |
| 22 | |
| 23 | for (auto _ : state) { |
| 24 | benchmark::DoNotOptimize(value&: iss); |
| 25 | |
| 26 | std::getline(is&: iss, str&: str); |
| 27 | benchmark::DoNotOptimize(value&: str); |
| 28 | iss.seekg(0); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | BENCHMARK(BM_getline_string); |
| 33 | |
| 34 | BENCHMARK_MAIN(); |
| 35 |