Add perf marks for query execution (#22082)

src/sql/workbench/api/browser/mainThreadPerf.ts

@@ -0,0 +1,24 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { MainThreadPerfShape } from 'sql/workbench/api/common/sqlExtHost.protocol';
+import { extHostNamedCustomer, IExtHostContext } from 'vs/workbench/services/extensions/common/extHostCustomers';
+import { SqlMainContext } from 'vs/workbench/api/common/extHost.protocol';
+import * as perf from 'vs/base/common/performance';
+
+@extHostNamedCustomer(SqlMainContext.MainThreadPerf)
+export class MainThreadPerf implements MainThreadPerfShape {
+	constructor(
+		context: IExtHostContext,
+	) { }
+
+	public $mark(name: string) {
+		perf.mark(name);
+	}
+
+	public dispose(): void {
+
+	}
+}