1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include <memory> 11 12#include "benchmark/benchmark_api.h" 13 14static void BM_SharedPtrCreateDestroy(benchmark::State& st) { 15 while (st.KeepRunning()) { 16 auto sp = std::make_shared<int>(42); 17 benchmark::DoNotOptimize(sp.get()); 18 } 19} 20BENCHMARK(BM_SharedPtrCreateDestroy); 21 22static void BM_SharedPtrIncDecRef(benchmark::State& st) { 23 auto sp = std::make_shared<int>(42); 24 benchmark::DoNotOptimize(sp.get()); 25 while (st.KeepRunning()) { 26 std::shared_ptr<int> sp2(sp); 27 benchmark::ClobberMemory(); 28 } 29} 30BENCHMARK(BM_SharedPtrIncDecRef); 31 32static void BM_WeakPtrIncDecRef(benchmark::State& st) { 33 auto sp = std::make_shared<int>(42); 34 benchmark::DoNotOptimize(sp.get()); 35 while (st.KeepRunning()) { 36 std::weak_ptr<int> wp(sp); 37 benchmark::ClobberMemory(); 38 } 39} 40BENCHMARK(BM_WeakPtrIncDecRef); 41 42BENCHMARK_MAIN() 43