1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "tools/memory/simulator/metrics_printer.h"
#include <iostream>
#include "base/strings/stringprintf.h"
namespace memory_simulator {
MetricsPrinter::MetricsPrinter() = default;
MetricsPrinter::~MetricsPrinter() = default;
void MetricsPrinter::AddProvider(std::unique_ptr<MetricsProvider> provider) {
DCHECK(!did_print_header_);
providers_.push_back(std::move(provider));
}
void MetricsPrinter::PrintHeader() {
DCHECK(!did_print_header_);
did_print_header_ = true;
std::string out = "elapsed_time(s)";
for (auto& provider : providers_) {
std::vector<std::string> metric_names = provider->GetMetricNames();
for (const std::string& metric_name : metric_names) {
base::StringAppendF(&out, ",%s", metric_name.c_str());
}
}
std::cout << out << std::endl;
}
void MetricsPrinter::PrintStats() {
DCHECK(did_print_header_);
std::string out;
base::TimeTicks now = base::TimeTicks::Now();
double seconds_since_start = (now - start_time_).InSecondsF();
base::StringAppendF(&out, "%.2f", seconds_since_start);
for (auto& provider : providers_) {
std::vector<std::string> metric_names = provider->GetMetricNames();
std::map<std::string, double> metric_values =
provider->GetMetricValues(now);
for (const std::string& metric_name : metric_names) {
auto it = metric_values.find(metric_name);
if (it == metric_values.end()) {
out += ",";
} else {
base::StringAppendF(&out, ",%.2f", it->second);
}
}
}
std::cout << out << std::endl;
}
} // namespace memory_simulator
|
