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      1 
      2 #include "benchmark/benchmark.h"
      3 
      4 #include <cassert>
      5 #include <memory>
      6 
      7 class MyFixture : public ::benchmark::Fixture {
      8  public:
      9   void SetUp(const ::benchmark::State& state) {
     10     if (state.thread_index == 0) {
     11       assert(data.get() == nullptr);
     12       data.reset(new int(42));
     13     }
     14   }
     15 
     16   void TearDown(const ::benchmark::State& state) {
     17     if (state.thread_index == 0) {
     18       assert(data.get() != nullptr);
     19       data.reset();
     20     }
     21   }
     22 
     23   ~MyFixture() { assert(data == nullptr); }
     24 
     25   std::unique_ptr<int> data;
     26 };
     27 
     28 BENCHMARK_F(MyFixture, Foo)(benchmark::State &st) {
     29   assert(data.get() != nullptr);
     30   assert(*data == 42);
     31   while (st.KeepRunning()) {
     32   }
     33 }
     34 
     35 BENCHMARK_DEFINE_F(MyFixture, Bar)(benchmark::State& st) {
     36   if (st.thread_index == 0) {
     37     assert(data.get() != nullptr);
     38     assert(*data == 42);
     39   }
     40   while (st.KeepRunning()) {
     41     assert(data.get() != nullptr);
     42     assert(*data == 42);
     43   }
     44   st.SetItemsProcessed(st.range(0));
     45 }
     46 BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42);
     47 BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42)->ThreadPerCpu();
     48 
     49 BENCHMARK_MAIN()
     50