95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
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// Copyright 2018 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/strings/escaping.h"
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#include <cstdio>
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#include <cstring>
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#include <random>
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#include "benchmark/benchmark.h"
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#include "absl/base/internal/raw_logging.h"
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#include "absl/strings/internal/escaping_test_common.h"
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namespace {
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void BM_CUnescapeHexString(benchmark::State& state) {
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std::string src;
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for (int i = 0; i < 50; i++) {
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src += "\\x55";
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}
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std::string dest;
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for (auto _ : state) {
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absl::CUnescape(src, &dest);
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}
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}
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BENCHMARK(BM_CUnescapeHexString);
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void BM_WebSafeBase64Escape_string(benchmark::State& state) {
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std::string raw;
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for (int i = 0; i < 10; ++i) {
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for (const auto& test_set : absl::strings_internal::base64_strings()) {
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raw += std::string(test_set.plaintext);
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}
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}
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// The actual benchmark loop is tiny...
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std::string escaped;
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for (auto _ : state) {
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absl::WebSafeBase64Escape(raw, &escaped);
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}
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// We want to be sure the compiler doesn't throw away the loop above,
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// and the easiest way to ensure that is to round-trip the results and verify
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// them.
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std::string round_trip;
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absl::WebSafeBase64Unescape(escaped, &round_trip);
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ABSL_RAW_CHECK(round_trip == raw, "");
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}
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BENCHMARK(BM_WebSafeBase64Escape_string);
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// Used for the CEscape benchmarks
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const char kStringValueNoEscape[] = "1234567890";
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const char kStringValueSomeEscaped[] = "123\n56789\xA1";
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const char kStringValueMostEscaped[] = "\xA1\xA2\ny\xA4\xA5\xA6z\b\r";
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void CEscapeBenchmarkHelper(benchmark::State& state, const char* string_value,
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int max_len) {
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std::string src;
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while (src.size() < max_len) {
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absl::StrAppend(&src, string_value);
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}
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for (auto _ : state) {
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absl::CEscape(src);
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}
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}
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void BM_CEscape_NoEscape(benchmark::State& state) {
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CEscapeBenchmarkHelper(state, kStringValueNoEscape, state.range(0));
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}
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BENCHMARK(BM_CEscape_NoEscape)->Range(1, 1 << 14);
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void BM_CEscape_SomeEscaped(benchmark::State& state) {
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CEscapeBenchmarkHelper(state, kStringValueSomeEscaped, state.range(0));
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}
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BENCHMARK(BM_CEscape_SomeEscaped)->Range(1, 1 << 14);
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void BM_CEscape_MostEscaped(benchmark::State& state) {
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CEscapeBenchmarkHelper(state, kStringValueMostEscaped, state.range(0));
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}
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BENCHMARK(BM_CEscape_MostEscaped)->Range(1, 1 << 14);
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} // namespace
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