util_smartptr.bench.cpp revision 1.1.1.1
1//===----------------------------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include <memory> 10 11#include "benchmark/benchmark.h" 12 13static void BM_SharedPtrCreateDestroy(benchmark::State& st) { 14 while (st.KeepRunning()) { 15 auto sp = std::make_shared<int>(42); 16 benchmark::DoNotOptimize(sp.get()); 17 } 18} 19BENCHMARK(BM_SharedPtrCreateDestroy); 20 21static void BM_SharedPtrIncDecRef(benchmark::State& st) { 22 auto sp = std::make_shared<int>(42); 23 benchmark::DoNotOptimize(sp.get()); 24 while (st.KeepRunning()) { 25 std::shared_ptr<int> sp2(sp); 26 benchmark::ClobberMemory(); 27 } 28} 29BENCHMARK(BM_SharedPtrIncDecRef); 30 31static void BM_WeakPtrIncDecRef(benchmark::State& st) { 32 auto sp = std::make_shared<int>(42); 33 benchmark::DoNotOptimize(sp.get()); 34 while (st.KeepRunning()) { 35 std::weak_ptr<int> wp(sp); 36 benchmark::ClobberMemory(); 37 } 38} 39BENCHMARK(BM_WeakPtrIncDecRef); 40 41BENCHMARK_MAIN(); 42