third-party/benchmark/test/fixture_test.cc

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