1 #undef NDEBUG 2 #include <cassert> 3 #include <cstddef> 4 5 #include "benchmark/benchmark.h" 6 7 #if __cplusplus >= 201103L 8 #error C++11 or greater detected. Should be C++03. 9 #endif 10 11 #ifdef BENCHMARK_HAS_CXX11 12 #error C++11 or greater detected by the library. BENCHMARK_HAS_CXX11 is defined. 13 #endif 14 15 void BM_empty(benchmark::State& state) { 16 while (state.KeepRunning()) { 17 volatile std::size_t x = state.iterations(); 18 ((void)x); 19 } 20 } 21 BENCHMARK(BM_empty); 22 23 // The new C++11 interface for args/ranges requires initializer list support. 24 // Therefore we provide the old interface to support C++03. 25 void BM_old_arg_range_interface(benchmark::State& state) { 26 assert((state.range(0) == 1 && state.range(1) == 2) || 27 (state.range(0) == 5 && state.range(1) == 6)); 28 while (state.KeepRunning()) { 29 } 30 } 31 BENCHMARK(BM_old_arg_range_interface)->ArgPair(1, 2)->RangePair(5, 5, 6, 6); 32 33 template <class T, class U> 34 void BM_template2(benchmark::State& state) { 35 BM_empty(state); 36 } 37 BENCHMARK_TEMPLATE2(BM_template2, int, long); 38 39 template <class T> 40 void BM_template1(benchmark::State& state) { 41 BM_empty(state); 42 } 43 BENCHMARK_TEMPLATE(BM_template1, long); 44 BENCHMARK_TEMPLATE1(BM_template1, int); 45 46 template <class T> 47 struct BM_Fixture : public ::benchmark::Fixture { 48 }; 49 50 BENCHMARK_TEMPLATE_F(BM_Fixture, BM_template1, long)(benchmark::State& state) { 51 BM_empty(state); 52 } 53 BENCHMARK_TEMPLATE1_F(BM_Fixture, BM_template2, int)(benchmark::State& state) { 54 BM_empty(state); 55 } 56 57 void BM_counters(benchmark::State& state) { 58 BM_empty(state); 59 state.counters["Foo"] = 2; 60 } 61 BENCHMARK(BM_counters); 62 63 BENCHMARK_MAIN(); 64
