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| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2020-10-12 14:27:29 +0200 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2020-10-13 09:35:20 +0000 |
| commit | c30a6232df03e1efbd9f3b226777b07e087a1122 (patch) | |
| tree | e992f45784689f373bcc38d1b79a239ebe17ee23 /chromium/v8/tools/zone-stats/model.js | |
| parent | 7b5b123ac58f58ffde0f4f6e488bcd09aa4decd3 (diff) | |
BASELINE: Update Chromium to 85.0.4183.14085-based
Change-Id: Iaa42f4680837c57725b1344f108c0196741f6057
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Diffstat (limited to 'chromium/v8/tools/zone-stats/model.js')
| -rw-r--r-- | chromium/v8/tools/zone-stats/model.js | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/chromium/v8/tools/zone-stats/model.js b/chromium/v8/tools/zone-stats/model.js new file mode 100644 index 00000000000..80f45237631 --- /dev/null +++ b/chromium/v8/tools/zone-stats/model.js @@ -0,0 +1,92 @@ +// Copyright 2020 the V8 project authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +'use strict'; + +export class Isolate { + constructor(address) { + this.address = address; + this.start = null; + this.end = null; + this.peakUsageTime = null; + // Maps zone name to per-zone statistics. + this.zones = new Map(); + // Zone names sorted by memory usage (from low to high). + this.sorted_zone_names = []; + // Maps time to total and per-zone memory usages. + this.samples = new Map(); + + this.peakAllocatedMemory = 0; + + // Maps zone name to their max memory consumption. + this.zonePeakMemory = Object.create(null); + // Peak memory consumed by a single zone. + this.singleZonePeakMemory = 0; + } + + finalize() { + this.samples.forEach(sample => this.finalizeSample(sample)); + this.start = Math.floor(this.start); + this.end = Math.ceil(this.end); + this.sortZoneNamesByPeakMemory(); + } + + getLabel() { + let label = `${this.address}: `; + label += ` peak=${formatBytes(this.peakAllocatedMemory)}`; + label += ` time=[${this.start}, ${this.end}] ms`; + return label; + } + + finalizeSample(sample) { + const time = sample.time; + if (this.start == null) { + this.start = time; + this.end = time; + } else { + this.end = Math.max(this.end, time); + } + + const allocated = sample.allocated; + if (allocated > this.peakAllocatedMemory) { + this.peakUsageTime = time; + this.peakAllocatedMemory = allocated; + } + + const sample_zones = sample.zones; + if (sample_zones !== undefined) { + sample.zones.forEach((zone_sample, zone_name) => { + let zone_stats = this.zones.get(zone_name); + if (zone_stats === undefined) { + zone_stats = {max_allocated: 0, max_used: 0}; + this.zones.set(zone_name, zone_stats); + } + + zone_stats.max_allocated = + Math.max(zone_stats.max_allocated, zone_sample.allocated); + zone_stats.max_used = Math.max(zone_stats.max_used, zone_sample.used); + }); + } + } + + sortZoneNamesByPeakMemory() { + let entries = [...this.zones.keys()]; + entries.sort((a, b) => + this.zones.get(a).max_allocated - this.zones.get(b).max_allocated + ); + this.sorted_zone_names = entries; + + let max = 0; + for (let [key, value] of entries) { + this.zonePeakMemory[key] = value; + max = Math.max(max, value); + } + this.singleZonePeakMemory = max; + } + + getInstanceTypePeakMemory(type) { + if (!(type in this.zonePeakMemory)) return 0; + return this.zonePeakMemory[type]; + } +} |