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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "perf_test_helpers.h"
#include <algorithm>
#include "base/check.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
namespace tracing {
namespace {
perf_test::PerfResultReporter SetUpReporter(const std::string& metric) {
CHECK(::testing::UnitTest::GetInstance() != nullptr) << "Must be GTest.";
const ::testing::TestInfo* test_info =
::testing::UnitTest::GetInstance()->current_test_info();
CHECK(test_info != nullptr) << "Must be GTest.";
perf_test::PerfResultReporter reporter(
std::string(test_info->test_suite_name()) + ".", test_info->name());
reporter.RegisterImportantMetric(metric, "ms");
return reporter;
}
} // namespace
ScopedStopwatch::ScopedStopwatch(const std::string& metric) : metric_(metric) {
begin_= base::TimeTicks::Now();
}
ScopedStopwatch::~ScopedStopwatch() {
base::TimeDelta value = base::TimeTicks::Now() - begin_;
SetUpReporter(metric_).AddResult(metric_, value);
}
IterableStopwatch::IterableStopwatch(const std::string& metric)
: metric_(metric) {
begin_ = base::TimeTicks::Now();
}
void IterableStopwatch::NextLap() {
base::TimeTicks now = base::TimeTicks::Now();
double elapsed = (now - begin_).InMillisecondsF();
begin_ = now;
laps_.push_back(elapsed);
}
IterableStopwatch::~IterableStopwatch() {
CHECK(!laps_.empty());
std::sort(laps_.begin(), laps_.end());
double median = laps_.at(laps_.size() / 2);
SetUpReporter(metric_).AddResult(metric_, median);
}
} // namespace tracing
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