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.h" 13 14 static 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 } 20 BENCHMARK(BM_SharedPtrCreateDestroy); 21 22 static 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 } 30 BENCHMARK(BM_SharedPtrIncDecRef); 31 32 static 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 } 40 BENCHMARK(BM_WeakPtrIncDecRef); 41 42 BENCHMARK_MAIN(); 43
