Log an error with the active extensions when the extension host crashes

src/vs/workbench/services/extensions/electron-browser/extensionService.ts

@@ -41,6 +41,7 @@ import { WebWorkerExtensionHost } from 'vs/workbench/services/extensions/browser
 import { IExtensionActivationHost as IWorkspaceContainsActivationHost, checkGlobFileExists, checkActivateWorkspaceContainsExtension } from 'vs/workbench/api/common/shared/workspaceContains';
 import { IWorkspaceContextService } from 'vs/platform/workspace/common/workspace';
 import { exists } from 'vs/base/node/pfs';
+import { ILogService } from 'vs/platform/log/common/log';
 
 class DeltaExtensionsQueueItem {
 	constructor(
@@ -76,6 +77,7 @@ export class ExtensionService extends AbstractExtensionService implements IExten
 		@IRemoteExplorerService private readonly _remoteExplorerService: IRemoteExplorerService,
 		@IExtensionGalleryService private readonly _extensionGalleryService: IExtensionGalleryService,
 		@IWorkspaceContextService private readonly _contextService: IWorkspaceContextService,
+		@ILogService private readonly _logService: ILogService,
 	) {
 		super(
 			instantiationService,
@@ -431,6 +433,7 @@ export class ExtensionService extends AbstractExtensionService implements IExten
 	}
 
 	protected _onExtensionHostCrashed(extensionHost: ExtensionHostManager, code: number, signal: string | null): void {
+		const activatedExtensions = Array.from(this._extensionHostActiveExtensions.values());
 		super._onExtensionHostCrashed(extensionHost, code, signal);
 
 		if (extensionHost.kind === ExtensionHostKind.LocalProcess) {
@@ -451,6 +454,9 @@ export class ExtensionService extends AbstractExtensionService implements IExten
 				return;
 			}
 
+			const message = `Extension host terminated unexpectedly. The following extensions were running: ${activatedExtensions.map(id => id.value).join(', ')}`;
+			this._logService.error(message);
+
 			this._notificationService.prompt(Severity.Error, nls.localize('extensionService.crash', "Extension host terminated unexpectedly."),
 				[{
 					label: nls.localize('devTools', "Open Developer Tools"),