Repo created

TMessagesProj/jni/voip/webrtc/absl/strings/escaping_benchmark.cc

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+// 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
+//
+//      https://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 <cstdint>
+#include <memory>
+#include <random>
+#include <string>
+
+#include "benchmark/benchmark.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/strings/internal/escaping_test_common.h"
+#include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
+
+namespace {
+
+void BM_CUnescapeHexString(benchmark::State& state) {
+  std::string src;
+  for (int i = 0; i < 50; i++) {
+    src += "\\x55";
+  }
+  for (auto _ : state) {
+    std::string dest;
+    benchmark::DoNotOptimize(src);
+    bool result = absl::CUnescape(src, &dest);
+    benchmark::DoNotOptimize(result);
+    benchmark::DoNotOptimize(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 : absl::strings_internal::base64_strings()) {
+      raw += std::string(test_set.plaintext);
+    }
+  }
+  for (auto _ : state) {
+    std::string escaped;
+    benchmark::DoNotOptimize(raw);
+    absl::WebSafeBase64Escape(raw, &escaped);
+    benchmark::DoNotOptimize(escaped);
+  }
+}
+BENCHMARK(BM_WebSafeBase64Escape_string);
+
+void BM_HexStringToBytes(benchmark::State& state) {
+  const int size = state.range(0);
+  std::string input, output;
+  for (int i = 0; i < size; ++i) input += "1c";
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(input);
+    bool result = absl::HexStringToBytes(input, &output);
+    benchmark::DoNotOptimize(result);
+    benchmark::DoNotOptimize(output);
+  }
+}
+BENCHMARK(BM_HexStringToBytes)->Range(1, 1 << 8);
+
+void BM_HexStringToBytes_Fail(benchmark::State& state) {
+  std::string binary;
+  absl::string_view hex_input1 = "1c2f003";
+  absl::string_view hex_input2 = "1c2f0032f40123456789abcdef**";
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(hex_input1);
+    bool result1 = absl::HexStringToBytes(hex_input1, &binary);
+    benchmark::DoNotOptimize(result1);
+    benchmark::DoNotOptimize(binary);
+    benchmark::DoNotOptimize(hex_input2);
+    bool result2 = absl::HexStringToBytes(hex_input2, &binary);
+    benchmark::DoNotOptimize(result2);
+    benchmark::DoNotOptimize(binary);
+  }
+}
+BENCHMARK(BM_HexStringToBytes_Fail);
+
+// 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) {
+    benchmark::DoNotOptimize(src);
+    std::string result = absl::CEscape(src);
+    benchmark::DoNotOptimize(result);
+  }
+}
+
+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