diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/strings/str_cat_benchmark.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/strings/str_cat_benchmark.cc | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/third_party/abseil_cpp/absl/strings/str_cat_benchmark.cc b/third_party/abseil_cpp/absl/strings/str_cat_benchmark.cc deleted file mode 100644 index ee4ad112f5..0000000000 --- a/third_party/abseil_cpp/absl/strings/str_cat_benchmark.cc +++ /dev/null @@ -1,140 +0,0 @@ -// 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/str_cat.h" - -#include <cstdint> -#include <string> - -#include "benchmark/benchmark.h" -#include "absl/strings/substitute.h" - -namespace { - -const char kStringOne[] = "Once Upon A Time, "; -const char kStringTwo[] = "There was a string benchmark"; - -// We want to include negative numbers in the benchmark, so this function -// is used to count 0, 1, -1, 2, -2, 3, -3, ... -inline int IncrementAlternatingSign(int i) { - return i > 0 ? -i : 1 - i; -} - -void BM_Sum_By_StrCat(benchmark::State& state) { - int i = 0; - char foo[100]; - for (auto _ : state) { - // NOLINTNEXTLINE(runtime/printf) - strcpy(foo, absl::StrCat(kStringOne, i, kStringTwo, i * 65536ULL).c_str()); - int sum = 0; - for (char* f = &foo[0]; *f != 0; ++f) { - sum += *f; - } - benchmark::DoNotOptimize(sum); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_Sum_By_StrCat); - -void BM_StrCat_By_snprintf(benchmark::State& state) { - int i = 0; - char on_stack[1000]; - for (auto _ : state) { - snprintf(on_stack, sizeof(on_stack), "%s %s:%d", kStringOne, kStringTwo, i); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_StrCat_By_snprintf); - -void BM_StrCat_By_Strings(benchmark::State& state) { - int i = 0; - for (auto _ : state) { - std::string result = - std::string(kStringOne) + " " + kStringTwo + ":" + absl::StrCat(i); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_StrCat_By_Strings); - -void BM_StrCat_By_StringOpPlus(benchmark::State& state) { - int i = 0; - for (auto _ : state) { - std::string result = kStringOne; - result += " "; - result += kStringTwo; - result += ":"; - result += absl::StrCat(i); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_StrCat_By_StringOpPlus); - -void BM_StrCat_By_StrCat(benchmark::State& state) { - int i = 0; - for (auto _ : state) { - std::string result = absl::StrCat(kStringOne, " ", kStringTwo, ":", i); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_StrCat_By_StrCat); - -void BM_HexCat_By_StrCat(benchmark::State& state) { - int i = 0; - for (auto _ : state) { - std::string result = - absl::StrCat(kStringOne, " ", absl::Hex(int64_t{i} + 0x10000000)); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_HexCat_By_StrCat); - -void BM_HexCat_By_Substitute(benchmark::State& state) { - int i = 0; - for (auto _ : state) { - std::string result = absl::Substitute( - "$0 $1", kStringOne, reinterpret_cast<void*>(int64_t{i} + 0x10000000)); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_HexCat_By_Substitute); - -void BM_FloatToString_By_StrCat(benchmark::State& state) { - int i = 0; - float foo = 0.0f; - for (auto _ : state) { - std::string result = absl::StrCat(foo += 1.001f, " != ", int64_t{i}); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_FloatToString_By_StrCat); - -void BM_DoubleToString_By_SixDigits(benchmark::State& state) { - int i = 0; - double foo = 0.0; - for (auto _ : state) { - std::string result = - absl::StrCat(absl::SixDigits(foo += 1.001), " != ", int64_t{i}); - benchmark::DoNotOptimize(result); - i = IncrementAlternatingSign(i); - } -} -BENCHMARK(BM_DoubleToString_By_SixDigits); - -} // namespace |