| Honglin Yu | 2161669 | 2021-05-14 11:20:22 +1000 | [diff] [blame] | 1 | // Copyright 2021 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "ml/time_metrics.h" |
| 6 | |
| 7 | #include <metrics/metrics_library.h> |
| 8 | |
| 9 | namespace ml { |
| 10 | |
| 11 | namespace { |
| 12 | // UMA histogram range for wall time metrics. |
| 13 | constexpr int kWallTimeMinMicrosec = 1; // 1 μs |
| 14 | constexpr int kWallTimeMaxMicrosec = 1800000000; // 30 min |
| 15 | constexpr int kWallTimeBuckets = 100; |
| 16 | } // namespace |
| 17 | |
| 18 | WallTimeMetric::WallTimeMetric(const std::string& name) |
| 19 | : metric_name_(name), start_time_(base::Time::Now()) {} |
| 20 | |
| 21 | WallTimeMetric::~WallTimeMetric() { |
| 22 | MetricsLibrary().SendToUMA( |
| 23 | metric_name_, (base::Time::Now() - start_time_).InMicroseconds(), |
| 24 | kWallTimeMinMicrosec, kWallTimeMaxMicrosec, kWallTimeBuckets); |
| 25 | } |
| 26 | |
| 27 | } // namespace ml |