llvm-project

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//===----------------------------------------------------------------------===//
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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 <memory>
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#include "benchmark/benchmark.h"
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static void BM_SharedPtrCreateDestroy(benchmark::State& st) {
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  while (st.KeepRunning()) {
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    auto sp = std::make_shared<int>(42);
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    benchmark::DoNotOptimize(sp.get());
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  }
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}
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BENCHMARK(BM_SharedPtrCreateDestroy);
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static void BM_SharedPtrIncDecRef(benchmark::State& st) {
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  auto sp = std::make_shared<int>(42);
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  benchmark::DoNotOptimize(sp.get());
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  while (st.KeepRunning()) {
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    std::shared_ptr<int> sp2(sp);
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    benchmark::ClobberMemory();
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  }
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}
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BENCHMARK(BM_SharedPtrIncDecRef);
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static void BM_WeakPtrIncDecRef(benchmark::State& st) {
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  auto sp = std::make_shared<int>(42);
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  benchmark::DoNotOptimize(sp.get());
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  while (st.KeepRunning()) {
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    std::weak_ptr<int> wp(sp);
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    benchmark::ClobberMemory();
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  }
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}
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BENCHMARK(BM_WeakPtrIncDecRef);
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BENCHMARK_MAIN();
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