| Index: tracing/tracing/metrics/blink/leak_detection_metric.html
|
| diff --git a/tracing/tracing/metrics/blink/leak_detection_metric.html b/tracing/tracing/metrics/blink/leak_detection_metric.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..d2479c7b908ceda5f1a7353db54d1be518897978
|
| --- /dev/null
|
| +++ b/tracing/tracing/metrics/blink/leak_detection_metric.html
|
| @@ -0,0 +1,80 @@
|
| +<!DOCTYPE html>
|
| +<!--
|
| +Copyright 2017 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/metrics/system_health/utils.html">
|
| +<link rel="import" href="/tracing/value/histogram.html">
|
| +
|
| +<script>
|
| +'use strict';
|
| +
|
| +tr.exportTo('tr.metrics.blink', function() {
|
| + function leakDetectionMetric(histograms, model) {
|
| + // Extract renderer pids.
|
| + const modelHelper = model.getOrCreateHelper(
|
| + tr.model.helpers.ChromeModelHelper);
|
| + if (modelHelper === undefined) {
|
| + throw new Error('Chrome is not present.');
|
| + }
|
| + const rendererHelpers = modelHelper.rendererHelpers;
|
| + if (Object.keys(rendererHelpers).length === 0) {
|
| + throw new Error('Renderer process is not present.');
|
| + }
|
| + const pids = Object.keys(rendererHelpers);
|
| +
|
| + // Get the dumps.
|
| + const chromeDumps = tr.metrics.sh
|
| + .splitGlobalDumpsByBrowserName(model, undefined).get('chrome');
|
| +
|
| + const sumCounter = new Map();
|
| + // Add up counters for all the renderer processes.
|
| +
|
| + for (const pid of pids) {
|
| + for (const [key, count] of countLeakedBlinkObjects(chromeDumps, pid)) {
|
| + sumCounter.set(key, (sumCounter.get(key) || 0) + count);
|
| + }
|
| + }
|
| +
|
| + for (const [key, count] of sumCounter) {
|
| + histograms.createHistogram('Leaked ' + key,
|
| + tr.b.Unit.byName.count_smallerIsBetter, count);
|
| + }
|
| + }
|
| +
|
| + tr.metrics.MetricRegistry.register(leakDetectionMetric);
|
| +
|
| + function countLeakedBlinkObjects(dumps, pid) {
|
| + if (dumps === undefined || dumps.length < 2) {
|
| + throw new Error('Expected at least two memory dumps.');
|
| + }
|
| + const firstCounter = countBlinkObjects(dumps[0], pid);
|
| + const lastCounter = countBlinkObjects(dumps[dumps.length - 1], pid);
|
| + const diffCounter = new Map();
|
| + for (const [key, lastCount] of lastCounter) {
|
| + diffCounter.set(key, lastCount - firstCounter.get(key));
|
| + }
|
| + return diffCounter;
|
| + }
|
| +
|
| + function countBlinkObjects(dump, pid) {
|
| + const counter = new Map();
|
| + const processesMemoryDumps = dump.processMemoryDumps;
|
| + if (processesMemoryDumps[pid] === undefined) return counter;
|
| + const blinkObjectsDump = processesMemoryDumps[pid].memoryAllocatorDumps
|
| + .find(dump => dump.fullName === 'blink_objects');
|
| + for (const v of blinkObjectsDump.children) {
|
| + counter.set(v.name, v.numerics.object_count.value);
|
| + }
|
| + return counter;
|
| + }
|
| +
|
| + return {
|
| + leakDetectionMetric,
|
| + };
|
| +});
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 3012153002:
Add leakDetectionMetric for tracing (Closed)
