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Diffstat (limited to 'absl/strings/escaping_benchmark.cc')
-rw-r--r-- | absl/strings/escaping_benchmark.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/absl/strings/escaping_benchmark.cc b/absl/strings/escaping_benchmark.cc new file mode 100644 index 000000000000..26ddc2d5f318 --- /dev/null +++ b/absl/strings/escaping_benchmark.cc @@ -0,0 +1,96 @@ +// Copyright 2018 The Abseil Authors. +// +// 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. + +#include "absl/strings/escaping.h" + +#include <cstdio> +#include <cstring> +#include <random> + +#include "benchmark/benchmark.h" +#include "absl/base/internal/raw_logging.h" +#include "absl/strings/internal/escaping_test_common.inc" + +namespace { + +void BM_CUnescapeHexString(benchmark::State& state) { + std::string src; + for (int i = 0; i < 50; i++) { + src += "\\x55"; + } + std::string dest; + for (auto _ : state) { + absl::CUnescape(src, &dest); + } +} +BENCHMARK(BM_CUnescapeHexString); + +void BM_WebSafeBase64Escape_string(benchmark::State& state) { + std::string raw; + for (int i = 0; i < 10; ++i) { + for (const auto& test_set : base64_strings) { + raw += std::string(test_set.plaintext); + } + } + + // The actual benchmark loop is tiny... + std::string escaped; + for (auto _ : state) { + absl::WebSafeBase64Escape(raw, &escaped); + } + + // We want to be sure the compiler doesn't throw away the loop above, + // and the easiest way to ensure that is to round-trip the results and verify + // them. + std::string round_trip; + absl::WebSafeBase64Unescape(escaped, &round_trip); + ABSL_RAW_CHECK(round_trip == raw, ""); +} +BENCHMARK(BM_WebSafeBase64Escape_string); + +// Used for the CEscape benchmarks +const char kStringValueNoEscape[] = "1234567890"; +const char kStringValueSomeEscaped[] = "123\n56789\xA1"; +const char kStringValueMostEscaped[] = "\xA1\xA2\ny\xA4\xA5\xA6z\b\r"; + +void CEscapeBenchmarkHelper(benchmark::State& state, const char* string_value, + int max_len) { + std::string src; + while (src.size() < max_len) { + absl::StrAppend(&src, string_value); + } + + for (auto _ : state) { + absl::CEscape(src); + } +} + +void BM_CEscape_NoEscape(benchmark::State& state) { + CEscapeBenchmarkHelper(state, kStringValueNoEscape, state.range(0)); +} +BENCHMARK(BM_CEscape_NoEscape)->Range(1, 1 << 14); + +void BM_CEscape_SomeEscaped(benchmark::State& state) { + CEscapeBenchmarkHelper(state, kStringValueSomeEscaped, state.range(0)); +} +BENCHMARK(BM_CEscape_SomeEscaped)->Range(1, 1 << 14); + +void BM_CEscape_MostEscaped(benchmark::State& state) { + CEscapeBenchmarkHelper(state, kStringValueMostEscaped, state.range(0)); +} +BENCHMARK(BM_CEscape_MostEscaped)->Range(1, 1 << 14); + +} // namespace + +BENCHMARK_MAIN(); |