| <!DOCTYPE html> |
| <!-- |
| Copyright 2019 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/base/unit.html"> |
| <link rel="import" href="/tracing/metrics/metric_registry.html"> |
| <link rel="import" href="/tracing/value/histogram.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.metrics.sh', function() { |
| const BYTE_BOUNDARIES = tr.v.HistogramBinBoundaries |
| .createExponential(1, 1e9, 1e2); |
| |
| /* This metric measures mapped and resident native code memory footprint. */ |
| function nativeCodeResidentMemoryMetric(histograms, model) { |
| const histogram = new tr.v.Histogram( |
| 'NativeCodeResidentMemory', |
| tr.b.Unit.byName.sizeInBytes_smallerIsBetter, |
| BYTE_BOUNDARIES); |
| for (const slice of model.getDescendantEvents()) { |
| if (slice.category === 'disabled-by-default-memory-infra' && |
| slice.title === 'ReportGlobalNativeCodeResidentMemoryKb' && |
| slice.args.NativeCodeResidentMemory) { |
| histogram.addSample(slice.args.NativeCodeResidentMemory); |
| } |
| } |
| histograms.addHistogram(histogram); |
| } |
| |
| tr.metrics.MetricRegistry.register(nativeCodeResidentMemoryMetric); |
| |
| return { |
| nativeCodeResidentMemoryMetric, |
| }; |
| }); |
| </script> |
