b101f01382
``` Benchmark old new Difference % Difference ---------------------------------------------- -------------- -------------- ------------ -------------- std::copy(CharT*,_CharT*,_ostreambuf_iterator) 8115.45 329.54 -7785.91 -95.94% ```
27 lines
813 B
C++
27 lines
813 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include <iterator>
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#include <fstream>
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#include <vector>
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#include <benchmark/benchmark.h>
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static void bm_copy(benchmark::State& state) {
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std::vector<char> buffer;
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buffer.resize(16384);
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std::ofstream stream("/dev/null");
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for (auto _ : state)
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std::copy(buffer.begin(), buffer.end(), std::ostreambuf_iterator<char>(stream.rdbuf()));
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}
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BENCHMARK(bm_copy)->Name("std::copy(CharT*, CharT*, ostreambuf_iterator)");
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BENCHMARK_MAIN();
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