-- 298d93fcb860116111611a8ab0662b409734227a by Alex Strelnikov <strel@google.com>: Release ascii_benchmark. PiperOrigin-RevId: 205275981 -- 73a01469e5862eefbe5ef9d434f45b7073476272 by Abseil Team <absl-team@google.com>: Internal cleanup PiperOrigin-RevId: 205236717 -- 53d6338bf49dab95bd0fbb5bbcd56970c6b868c2 by Abseil Team <absl-team@google.com>: Removes InlinedVector's dependency on bitwise operators for size_type PiperOrigin-RevId: 205236134 GitOrigin-RevId: 298d93fcb860116111611a8ab0662b409734227a Change-Id: I754f5eea889567add2dbbdea358a533f54a912ddpull/150/head
parent
2c5af55ed3
commit
7aa411ceaf
3 changed files with 141 additions and 5 deletions
@ -0,0 +1,120 @@ |
||||
// 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/ascii.h" |
||||
|
||||
#include <cctype> |
||||
#include <string> |
||||
#include <array> |
||||
#include <random> |
||||
|
||||
#include "benchmark/benchmark.h" |
||||
|
||||
namespace { |
||||
|
||||
std::array<unsigned char, 256> MakeShuffledBytes() { |
||||
std::array<unsigned char, 256> bytes; |
||||
for (size_t i = 0; i < 256; ++i) bytes[i] = static_cast<unsigned char>(i); |
||||
std::random_device rd; |
||||
std::seed_seq seed({rd(), rd(), rd(), rd(), rd(), rd(), rd(), rd()}); |
||||
std::mt19937 g(seed); |
||||
std::shuffle(bytes.begin(), bytes.end(), g); |
||||
return bytes; |
||||
} |
||||
|
||||
template <typename Function> |
||||
void AsciiBenchmark(benchmark::State& state, Function f) { |
||||
std::array<unsigned char, 256> bytes = MakeShuffledBytes(); |
||||
size_t sum = 0; |
||||
for (auto _ : state) { |
||||
for (unsigned char b : bytes) sum += f(b) ? 1 : 0; |
||||
} |
||||
// Make a copy of `sum` before calling `DoNotOptimize` to make sure that `sum`
|
||||
// can be put in a CPU register and not degrade performance in the loop above.
|
||||
size_t sum2 = sum; |
||||
benchmark::DoNotOptimize(sum2); |
||||
state.SetBytesProcessed(state.iterations() * bytes.size()); |
||||
} |
||||
|
||||
using StdAsciiFunction = int (*)(int); |
||||
template <StdAsciiFunction f> |
||||
void BM_Ascii(benchmark::State& state) { |
||||
AsciiBenchmark(state, f); |
||||
} |
||||
|
||||
using AbslAsciiIsFunction = bool (*)(unsigned char); |
||||
template <AbslAsciiIsFunction f> |
||||
void BM_Ascii(benchmark::State& state) { |
||||
AsciiBenchmark(state, f); |
||||
} |
||||
|
||||
using AbslAsciiToFunction = char (*)(unsigned char); |
||||
template <AbslAsciiToFunction f> |
||||
void BM_Ascii(benchmark::State& state) { |
||||
AsciiBenchmark(state, f); |
||||
} |
||||
|
||||
inline char Noop(unsigned char b) { return static_cast<char>(b); } |
||||
|
||||
BENCHMARK_TEMPLATE(BM_Ascii, Noop); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isalpha); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isalpha); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isdigit); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isdigit); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isalnum); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isalnum); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isspace); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isspace); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::ispunct); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_ispunct); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isblank); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isblank); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::iscntrl); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_iscntrl); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isxdigit); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isxdigit); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isprint); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isprint); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isgraph); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isgraph); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::isupper); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isupper); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::islower); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_islower); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, isascii); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isascii); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::tolower); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_tolower); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, std::toupper); |
||||
BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_toupper); |
||||
|
||||
static void BM_StrToLower(benchmark::State& state) { |
||||
const int size = state.range(0); |
||||
std::string s(size, 'X'); |
||||
for (auto _ : state) { |
||||
benchmark::DoNotOptimize(absl::AsciiStrToLower(s)); |
||||
} |
||||
} |
||||
BENCHMARK(BM_StrToLower)->Range(1, 1 << 20); |
||||
|
||||
static void BM_StrToUpper(benchmark::State& state) { |
||||
const int size = state.range(0); |
||||
std::string s(size, 'x'); |
||||
for (auto _ : state) { |
||||
benchmark::DoNotOptimize(absl::AsciiStrToUpper(s)); |
||||
} |
||||
} |
||||
BENCHMARK(BM_StrToUpper)->Range(1, 1 << 20); |
||||
|
||||
} // namespace
|
Loading…
Reference in new issue