third-party/benchmark/src/benchmark_api_internal.cc

   1 #include "benchmark_api_internal.h"
   2
   3 #include <cinttypes>
   4
   5 #include "string_util.h"
   6
   7 namespace benchmark {
   8 namespace internal {
   9
  10 BenchmarkInstance::BenchmarkInstance(Benchmark* benchmark, int family_idx,
  11                                      int per_family_instance_idx,
  12                                      const std::vector<int64_t>& args,
  13                                      int thread_count)
  14     : benchmark_(*benchmark),
  15       family_index_(family_idx),
  16       per_family_instance_index_(per_family_instance_idx),
  17       aggregation_report_mode_(benchmark_.aggregation_report_mode_),
  18       args_(args),
  19       time_unit_(benchmark_.time_unit_),
  20       measure_process_cpu_time_(benchmark_.measure_process_cpu_time_),
  21       use_real_time_(benchmark_.use_real_time_),
  22       use_manual_time_(benchmark_.use_manual_time_),
  23       complexity_(benchmark_.complexity_),
  24       complexity_lambda_(benchmark_.complexity_lambda_),
  25       statistics_(benchmark_.statistics_),
  26       repetitions_(benchmark_.repetitions_),
  27       min_time_(benchmark_.min_time_),
  28       iterations_(benchmark_.iterations_),
  29       threads_(thread_count) {
  30   name_.function_name = benchmark_.name_;
  31
  32   size_t arg_i = 0;
  33   for (const auto& arg : args) {
  34     if (!name_.args.empty()) {
  35       name_.args += '/';
  36     }
  37
  38     if (arg_i < benchmark->arg_names_.size()) {
  39       const auto& arg_name = benchmark_.arg_names_[arg_i];
  40       if (!arg_name.empty()) {
  41         name_.args += StrFormat("%s:", arg_name.c_str());
  42       }
  43     }
  44
  45     name_.args += StrFormat("%" PRId64, arg);
  46     ++arg_i;
  47   }
  48
  49   if (!IsZero(benchmark->min_time_)) {
  50     name_.min_time = StrFormat("min_time:%0.3f", benchmark_.min_time_);
  51   }
  52
  53   if (benchmark_.iterations_ != 0) {
  54     name_.iterations = StrFormat(
  55         "iterations:%lu", static_cast<unsigned long>(benchmark_.iterations_));
  56   }
  57
  58   if (benchmark_.repetitions_ != 0) {
  59     name_.repetitions = StrFormat("repeats:%d", benchmark_.repetitions_);
  60   }
  61
  62   if (benchmark_.measure_process_cpu_time_) {
  63     name_.time_type = "process_time";
  64   }
  65
  66   if (benchmark_.use_manual_time_) {
  67     if (!name_.time_type.empty()) {
  68       name_.time_type += '/';
  69     }
  70     name_.time_type += "manual_time";
  71   } else if (benchmark_.use_real_time_) {
  72     if (!name_.time_type.empty()) {
  73       name_.time_type += '/';
  74     }
  75     name_.time_type += "real_time";
  76   }
  77
  78   if (!benchmark_.thread_counts_.empty()) {
  79     name_.threads = StrFormat("threads:%d", threads_);
  80   }
  81
  82   setup_ = benchmark_.setup_;
  83   teardown_ = benchmark_.teardown_;
  84 }
  85
  86 State BenchmarkInstance::Run(
  87     IterationCount iters, int thread_id, internal::ThreadTimer* timer,
  88     internal::ThreadManager* manager,
  89     internal::PerfCountersMeasurement* perf_counters_measurement) const {
  90   State st(iters, args_, thread_id, threads_, timer, manager,
  91            perf_counters_measurement);
  92   benchmark_.Run(st);
  93   return st;
  94 }
  95
  96 void BenchmarkInstance::Setup() const {
  97   if (setup_) {
  98     State st(/*iters*/ 1, args_, /*thread_id*/ 0, threads_, nullptr, nullptr,
  99              nullptr);
 100     setup_(st);
 101   }
 102 }
 103
 104 void BenchmarkInstance::Teardown() const {
 105   if (teardown_) {
 106     State st(/*iters*/ 1, args_, /*thread_id*/ 0, threads_, nullptr, nullptr,
 107              nullptr);
 108     teardown_(st);
 109   }
 110 }
 111 }  // namespace internal
 112 }  // namespace benchmark