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#include <cstdlib>
16#include <iostream>
17#include <map>
18#include <string>
19#include <tuple>
20#include <vector>
21
22#include "benchmark/benchmark.h"
23#include "check.h"
24#include "string_util.h"
25#include "timers.h"
26
27namespace benchmark {
28
29BenchmarkReporter::BenchmarkReporter()
30 : output_stream_(&std::cout), error_stream_(&std::cerr) {}
31
32BenchmarkReporter::~BenchmarkReporter() {}
33
34void BenchmarkReporter::PrintBasicContext(std::ostream *out,
35 Context const &context) {
36 BM_CHECK(out) << "cannot be null";
37 auto &Out = *out;
38
39#ifndef BENCHMARK_OS_QURT
40 // Date/time information is not available on QuRT.
41 // Attempting to get it via this call cause the binary to crash.
42 Out << LocalDateTimeString() << "\n";
43#endif
44
45 if (context.executable_name)
46 Out << "Running " << context.executable_name << "\n";
47
48 const CPUInfo &info = context.cpu_info;
49 Out << "Run on (" << info.num_cpus << " X "
50 << (info.cycles_per_second / 1000000.0) << " MHz CPU "
51 << ((info.num_cpus > 1) ? "s" : "") << ")\n";
52 if (info.caches.size() != 0) {
53 Out << "CPU Caches:\n";
54 for (auto &CInfo : info.caches) {
55 Out << " L" << CInfo.level << " " << CInfo.type << " "
56 << (CInfo.size / 1024) << " KiB";
57 if (CInfo.num_sharing != 0)
58 Out << " (x" << (info.num_cpus / CInfo.num_sharing) << ")";
59 Out << "\n";
60 }
61 }
62 if (!info.load_avg.empty()) {
63 Out << "Load Average: ";
64 for (auto It = info.load_avg.begin(); It != info.load_avg.end();) {
65 Out << StrFormat(format: "%.2f", *It++);
66 if (It != info.load_avg.end()) Out << ", ";
67 }
68 Out << "\n";
69 }
70
71 std::map<std::string, std::string> *global_context =
72 internal::GetGlobalContext();
73
74 if (global_context != nullptr) {
75 for (const auto &kv : *global_context) {
76 Out << kv.first << ": " << kv.second << "\n";
77 }
78 }
79
80 if (CPUInfo::Scaling::ENABLED == info.scaling) {
81 Out << "***WARNING*** CPU scaling is enabled, the benchmark "
82 "real time measurements may be noisy and will incur extra "
83 "overhead.\n";
84 }
85
86#ifndef NDEBUG
87 Out << "***WARNING*** Library was built as DEBUG. Timings may be "
88 "affected.\n";
89#endif
90}
91
92// No initializer because it's already initialized to NULL.
93const char *BenchmarkReporter::Context::executable_name;
94
95BenchmarkReporter::Context::Context()
96 : cpu_info(CPUInfo::Get()), sys_info(SystemInfo::Get()) {}
97
98std::string BenchmarkReporter::Run::benchmark_name() const {
99 std::string name = run_name.str();
100 if (run_type == RT_Aggregate) {
101 name += "_" + aggregate_name;
102 }
103 return name;
104}
105
106double BenchmarkReporter::Run::GetAdjustedRealTime() const {
107 double new_time = real_accumulated_time * GetTimeUnitMultiplier(unit: time_unit);
108 if (iterations != 0) new_time /= static_cast<double>(iterations);
109 return new_time;
110}
111
112double BenchmarkReporter::Run::GetAdjustedCPUTime() const {
113 double new_time = cpu_accumulated_time * GetTimeUnitMultiplier(unit: time_unit);
114 if (iterations != 0) new_time /= static_cast<double>(iterations);
115 return new_time;
116}
117
118} // end namespace benchmark
119

source code of third-party/benchmark/src/reporter.cc