diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/strings/internal/ostringstream_benchmark.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/strings/internal/ostringstream_benchmark.cc | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/third_party/abseil_cpp/absl/strings/internal/ostringstream_benchmark.cc b/third_party/abseil_cpp/absl/strings/internal/ostringstream_benchmark.cc deleted file mode 100644 index 5979f18236e3..000000000000 --- a/third_party/abseil_cpp/absl/strings/internal/ostringstream_benchmark.cc +++ /dev/null @@ -1,106 +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/internal/ostringstream.h" - -#include <sstream> -#include <string> - -#include "benchmark/benchmark.h" - -namespace { - -enum StringType { - kNone, - kStdString, -}; - -// Benchmarks for std::ostringstream. -template <StringType kOutput> -void BM_StdStream(benchmark::State& state) { - const int num_writes = state.range(0); - const int bytes_per_write = state.range(1); - const std::string payload(bytes_per_write, 'x'); - for (auto _ : state) { - std::ostringstream strm; - benchmark::DoNotOptimize(strm); - for (int i = 0; i != num_writes; ++i) { - strm << payload; - } - switch (kOutput) { - case kNone: { - break; - } - case kStdString: { - std::string s = strm.str(); - benchmark::DoNotOptimize(s); - break; - } - } - } -} - -// Create the stream, optionally write to it, then destroy it. -BENCHMARK_TEMPLATE(BM_StdStream, kNone) - ->ArgPair(0, 0) - ->ArgPair(1, 16) // 16 bytes is small enough for SSO - ->ArgPair(1, 256) // 256 bytes requires heap allocation - ->ArgPair(1024, 256); -// Create the stream, write to it, get std::string out, then destroy. -BENCHMARK_TEMPLATE(BM_StdStream, kStdString) - ->ArgPair(1, 16) // 16 bytes is small enough for SSO - ->ArgPair(1, 256) // 256 bytes requires heap allocation - ->ArgPair(1024, 256); - -// Benchmarks for OStringStream. -template <StringType kOutput> -void BM_CustomStream(benchmark::State& state) { - const int num_writes = state.range(0); - const int bytes_per_write = state.range(1); - const std::string payload(bytes_per_write, 'x'); - for (auto _ : state) { - std::string out; - absl::strings_internal::OStringStream strm(&out); - benchmark::DoNotOptimize(strm); - for (int i = 0; i != num_writes; ++i) { - strm << payload; - } - switch (kOutput) { - case kNone: { - break; - } - case kStdString: { - std::string s = out; - benchmark::DoNotOptimize(s); - break; - } - } - } -} - -// Create the stream, optionally write to it, then destroy it. -BENCHMARK_TEMPLATE(BM_CustomStream, kNone) - ->ArgPair(0, 0) - ->ArgPair(1, 16) // 16 bytes is small enough for SSO - ->ArgPair(1, 256) // 256 bytes requires heap allocation - ->ArgPair(1024, 256); -// Create the stream, write to it, get std::string out, then destroy. -// It's not useful in practice to extract std::string from OStringStream; we -// measure it for completeness. -BENCHMARK_TEMPLATE(BM_CustomStream, kStdString) - ->ArgPair(1, 16) // 16 bytes is small enough for SSO - ->ArgPair(1, 256) // 256 bytes requires heap allocation - ->ArgPair(1024, 256); - -} // namespace |