Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'
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lib/vscode/src/vs/base/common/stopwatch.ts
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40
lib/vscode/src/vs/base/common/stopwatch.ts
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { globals } from 'vs/base/common/platform';
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const hasPerformanceNow = (globals.performance && typeof globals.performance.now === 'function');
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export class StopWatch {
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private _highResolution: boolean;
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private _startTime: number;
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private _stopTime: number;
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public static create(highResolution: boolean = true): StopWatch {
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return new StopWatch(highResolution);
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}
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constructor(highResolution: boolean) {
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this._highResolution = hasPerformanceNow && highResolution;
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this._startTime = this._now();
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this._stopTime = -1;
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}
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public stop(): void {
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this._stopTime = this._now();
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}
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public elapsed(): number {
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if (this._stopTime !== -1) {
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return this._stopTime - this._startTime;
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}
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return this._now() - this._startTime;
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}
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private _now(): number {
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return this._highResolution ? globals.performance.now() : new Date().getTime();
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}
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}
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