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denoland-deno/js/metrics.ts
Ryan Dahl d43b43ca78
Refactor snapshot build (#2825)
Instead of using core/snapshot_creator.rs, instead two crates are
introduced which allow building the snapshot during build.rs.

Rollup is removed and replaced with our own bundler. This removes
the Node build dependency. Modules in //js now use Deno-style imports
with file extensions, rather than Node style extensionless imports.

This improves incremental build time when changes are made to //js files
by about 40 seconds.
2019-09-02 17:07:11 -04:00

28 lines
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TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as dispatch from "./dispatch.ts";
import { sendSync } from "./dispatch_json.ts";
export interface Metrics {
opsDispatched: number;
opsCompleted: number;
bytesSentControl: number;
bytesSentData: number;
bytesReceived: number;
}
/** Receive metrics from the privileged side of Deno.
*
* > console.table(Deno.metrics())
* ┌──────────────────┬────────┐
* │ (index) │ Values │
* ├──────────────────┼────────┤
* │ opsDispatched │ 9 │
* │ opsCompleted │ 9 │
* │ bytesSentControl │ 504 │
* │ bytesSentData │ 0 │
* │ bytesReceived │ 856 │
* └──────────────────┴────────┘
*/
export function metrics(): Metrics {
return sendSync(dispatch.OP_METRICS);
}