monitor -> service

src/vs/workbench/api/node/extHostHeapService.ts

@@ -0,0 +1,40 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import {ExtHostHeapServiceShape} from './extHost.protocol';
+
+export class ExtHostHeapService extends ExtHostHeapServiceShape {
+
+	private static _idPool = 0;
+
+	private _data: { [n: number]: any } = Object.create(null);
+	private _callbacks: { [n: number]: Function } = Object.create(null);
+
+	keep(obj:any, callback?:() => any): number {
+		const id = ExtHostHeapService._idPool++;
+		this._data[id] = obj;
+		if (typeof callback === 'function') {
+			this._callbacks[id] = callback;
+		}
+		return id;
+	}
+
+	delete(id: number): boolean {
+		delete this._callbacks[id];
+		return this._data[id];
+	}
+
+	get<T>(id: number): T {
+		return this._data[id];
+	}
+
+	$onGarbageCollection(ids: number[]): void {
+		for (const id of ids) {
+			setTimeout(this._callbacks[id]);
+			this.delete(id);
+		}
+	}
+}