benchmark 1.7.0
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benchmark_runner.h
1// Copyright 2015 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef BENCHMARK_RUNNER_H_
16#define BENCHMARK_RUNNER_H_
17
18#include <thread>
19#include <vector>
20
21#include "benchmark_api_internal.h"
22#include "internal_macros.h"
23#include "perf_counters.h"
24#include "thread_manager.h"
25
26namespace benchmark {
27
28BM_DECLARE_double(benchmark_min_time);
29BM_DECLARE_double(benchmark_min_warmup_time);
30BM_DECLARE_int32(benchmark_repetitions);
31BM_DECLARE_bool(benchmark_report_aggregates_only);
32BM_DECLARE_bool(benchmark_display_aggregates_only);
33BM_DECLARE_string(benchmark_perf_counters);
34
35namespace internal {
36
37extern MemoryManager* memory_manager;
38
39struct RunResults {
40 std::vector<BenchmarkReporter::Run> non_aggregates;
41 std::vector<BenchmarkReporter::Run> aggregates_only;
42
43 bool display_report_aggregates_only = false;
44 bool file_report_aggregates_only = false;
45};
46
48 public:
50 BenchmarkReporter::PerFamilyRunReports* reports_for_family);
51
52 int GetNumRepeats() const { return repeats; }
53
54 bool HasRepeatsRemaining() const {
55 return GetNumRepeats() != num_repetitions_done;
56 }
57
58 void DoOneRepetition();
59
60 RunResults&& GetResults();
61
62 BenchmarkReporter::PerFamilyRunReports* GetReportsForFamily() const {
63 return reports_for_family;
64 }
65
66 private:
67 RunResults run_results;
68
71
72 const double min_time;
73 const double min_warmup_time;
74 bool warmup_done;
75 const int repeats;
76 const bool has_explicit_iteration_count;
77
78 int num_repetitions_done = 0;
79
80 std::vector<std::thread> pool;
81
82 std::vector<MemoryManager::Result> memory_results;
83
84 IterationCount iters; // preserved between repetitions!
85 // So only the first repetition has to find/calculate it,
86 // the other repetitions will just use that precomputed iteration count.
87
88 PerfCountersMeasurement perf_counters_measurement;
89 PerfCountersMeasurement* const perf_counters_measurement_ptr;
90
91 struct IterationResults {
93 IterationCount iters;
94 double seconds;
95 };
96 IterationResults DoNIterations();
97
98 IterationCount PredictNumItersNeeded(const IterationResults& i) const;
99
100 bool ShouldReportIterationResults(const IterationResults& i) const;
101
102 double GetMinTimeToApply() const;
103
104 void FinishWarmUp(const IterationCount& i);
105
106 void RunWarmUp();
107};
108
109} // namespace internal
110
111} // end namespace benchmark
112
113#endif // BENCHMARK_RUNNER_H_
Definition: benchmark_api_internal.h:18
Definition: benchmark_runner.h:47
Definition: perf_counters.h:134
Definition: benchmark_runner.h:39
Definition: thread_manager.h:39