add a new lifecycle event `Restoring` which is set when the editors/viewlets...

add a new lifecycle event `Restoring` which is set when the editors/viewlets are being restored (start). also in the lifecycle service replace `onDidChangePhase` with `when`

src/vs/platform/lifecycle/common/lifecycle.ts

@@ -47,8 +47,9 @@ export enum StartupKind {
 
 export enum LifecyclePhase {
 	Starting = 1,
-	Running = 2,
-	ShuttingDown = 3
+	Restoring = 2,
+	Running = 3,
+	ShuttingDown = 4
 }
 
 /**
@@ -70,9 +71,10 @@ export interface ILifecycleService {
 	readonly phase: LifecyclePhase;
 
 	/**
-	 * An event that fire when the lifecycle phase has changed
+	 * Returns a promise that resolves when a certain lifecycle phase
+	 * has started.
 	 */
-	readonly onDidChangePhase: Event<LifecyclePhase>;
+	when(phase: LifecyclePhase): Thenable<void>;
 
 	/**
 	 * Fired before shutdown happens. Allows listeners to veto against the
@@ -92,8 +94,8 @@ export interface ILifecycleService {
 export const NullLifecycleService: ILifecycleService = {
 	_serviceBrand: null,
 	phase: LifecyclePhase.Running,
+	when() { return Promise.resolve(); },
 	startupKind: StartupKind.NewWindow,
-	onDidChangePhase: Event.None,
 	onWillShutdown: Event.None,
 	onShutdown: Event.None
 };
@@ -127,4 +129,4 @@ export function handleVetos(vetos: (boolean | TPromise<boolean>)[], onError: (er
 	}
 
 	return TPromise.join(promises).then(() => lazyValue);
-}
\ No newline at end of file
+}

src/vs/workbench/common/editor/textEditorModel.ts

@@ -70,11 +70,7 @@ export abstract class BaseTextEditorModel extends EditorModel implements ITextEd
 	protected createTextEditorModel(value: string | IRawTextSource, resource?: URI, modeId?: string): TPromise<EditorModel> {
 		const firstLineText = this.getFirstLineText(value);
 		const mode = this.getOrCreateMode(this.modeService, modeId, firstLineText);
-
-		// To avoid flickering, give the mode at most 50ms to load. If the mode doesn't load in 50ms, proceed creating the model with a mode promise
-		return TPromise.any<any>([TPromise.timeout(50), mode]).then(() => {
-			return this.doCreateTextEditorModel(value, mode, resource);
-		});
+		return TPromise.as(this.doCreateTextEditorModel(value, mode, resource));
 	}
 
 	private doCreateTextEditorModel(value: string | IRawTextSource, mode: TPromise<IMode>, resource: URI): EditorModel {
@@ -166,4 +162,4 @@ export abstract class BaseTextEditorModel extends EditorModel implements ITextEd
 
 		super.dispose();
 	}
-}
\ No newline at end of file
+}

src/vs/workbench/electron-browser/shell.ts

@@ -165,7 +165,7 @@ export class WorkbenchShell {
 		const [instantiationService, serviceCollection] = this.initServiceCollection(parent.getHTMLElement());
 
 		// Workbench
-		this.workbench = instantiationService.createInstance(Workbench, parent.getHTMLElement(), workbenchContainer.getHTMLElement(), this.configuration, serviceCollection);
+		this.workbench = instantiationService.createInstance(Workbench, parent.getHTMLElement(), workbenchContainer.getHTMLElement(), this.configuration, serviceCollection, this.lifecycleService);
 		this.workbench.startup({
 			onWorkbenchStarted: (info: IWorkbenchStartedInfo) => {
 

src/vs/workbench/electron-browser/workbench.ts

@@ -79,7 +79,8 @@ import { ProgressService2 } from 'vs/workbench/services/progress/browser/progres
 import { TextModelResolverService } from 'vs/workbench/services/textmodelResolver/common/textModelResolverService';
 import { ITextModelService } from 'vs/editor/common/services/resolverService';
 import { ServiceCollection } from 'vs/platform/instantiation/common/serviceCollection';
-import { ILifecycleService, ShutdownReason } from 'vs/platform/lifecycle/common/lifecycle';
+import { ShutdownReason, LifecyclePhase } from 'vs/platform/lifecycle/common/lifecycle';
+import { LifecycleService } from 'vs/workbench/services/lifecycle/electron-browser/lifecycleService';
 import { IWindowService, IWindowConfiguration as IWindowSettings, IWindowConfiguration, IPath } from 'vs/platform/windows/common/windows';
 import { IMessageService } from 'vs/platform/message/common/message';
 import { IStatusbarService } from 'vs/platform/statusbar/common/statusbar';
@@ -217,10 +218,10 @@ export class Workbench implements IPartService {
 		container: HTMLElement,
 		configuration: IWindowConfiguration,
 		serviceCollection: ServiceCollection,
+		private lifecycleService: LifecycleService,
 		@IInstantiationService private instantiationService: IInstantiationService,
 		@IWorkspaceContextService private contextService: IWorkspaceContextService,
 		@IStorageService private storageService: IStorageService,
-		@ILifecycleService private lifecycleService: ILifecycleService,
 		@IMessageService private messageService: IMessageService,
 		@IConfigurationService private configurationService: WorkspaceService,
 		@ITelemetryService private telemetryService: ITelemetryService,
@@ -339,6 +340,7 @@ export class Workbench implements IPartService {
 			const editorRestoreClock = time('restore:editors');
 			const restoredEditors: string[] = [];
 			compositeAndEditorPromises.push(this.resolveEditorsToOpen().then(inputs => {
+				this.lifecycleService.phase = LifecyclePhase.Restoring;
 				let editorOpenPromise: TPromise<IEditor[]>;
 				if (inputs.length) {
 					editorOpenPromise = this.editorService.openEditors(inputs.map(input => { return { input, position: EditorPosition.ONE }; }));

src/vs/workbench/parts/performance/electron-browser/performance.contribution.ts

@@ -17,7 +17,6 @@ import { ReportPerformanceIssueAction } from 'vs/workbench/electron-browser/acti
 import { TPromise } from 'vs/base/common/winjs.base';
 import { join } from 'path';
 import { localize } from 'vs/nls';
-import { toPromise, filterEvent } from 'vs/base/common/event';
 import { readdir } from 'vs/base/node/pfs';
 import { stopProfiling } from 'vs/base/node/profiler';
 
@@ -33,8 +32,8 @@ class StartupProfiler implements IWorkbenchContribution {
 	) {
 		// wait for everything to be ready
 		TPromise.join<any>([
+			lifecycleService.when(LifecyclePhase.Running),
 			extensionService.onReady(),
-			toPromise(filterEvent(lifecycleService.onDidChangePhase, phase => phase === LifecyclePhase.Running)),
 		]).then(() => {
 			this._stopProfiling();
 		});

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

@@ -33,7 +33,6 @@ import { IWindowService } from 'vs/platform/windows/common/windows';
 import { Action } from 'vs/base/common/actions';
 import { IDisposable } from 'vs/base/common/lifecycle';
 import { mark, time } from 'vs/base/common/performance';
-import { toPromise, filterEvent } from 'vs/base/common/event';
 import { ILifecycleService, LifecyclePhase } from 'vs/platform/lifecycle/common/lifecycle';
 
 const SystemExtensionsRoot = path.normalize(path.join(URI.parse(require.toUrl('')).fsPath, '..', 'extensions'));
@@ -100,12 +99,12 @@ export class ExtensionService implements IExtensionService {
 		this._extensionHostProcessCustomers = [];
 		this._extensionHostProcessProxy = null;
 
-		toPromise(filterEvent(lifecycleService.onDidChangePhase, phase => phase === LifecyclePhase.Running)).then(() => {
+		lifecycleService.when(LifecyclePhase.Restoring).then(() => {
 			// delay extension host creation and extension scanning
 			// until after the editors/panels are restored
+			this._startExtensionHostProcess([]);
+			this._scanAndHandleExtensions();
 		});
-		this._startExtensionHostProcess([]);
-		this._scanAndHandleExtensions();
 	}
 
 	public restartExtensionHost(): void {

src/vs/workbench/services/lifecycle/electron-browser/lifecycleService.ts

@@ -13,6 +13,8 @@ import { IStorageService, StorageScope } from 'vs/platform/storage/common/storag
 import { ipcRenderer as ipc } from 'electron';
 import Event, { Emitter } from 'vs/base/common/event';
 import { IWindowService } from 'vs/platform/windows/common/windows';
+import { mark } from 'vs/base/common/performance';
+import { Barrier } from 'vs/workbench/services/extensions/node/barrier';
 
 export class LifecycleService implements ILifecycleService {
 
@@ -20,12 +22,12 @@ export class LifecycleService implements ILifecycleService {
 
 	public _serviceBrand: any;
 
-	private readonly _onDidChangePhase = new Emitter<LifecyclePhase>();
 	private readonly _onWillShutdown = new Emitter<ShutdownEvent>();
 	private readonly _onShutdown = new Emitter<ShutdownReason>();
 	private readonly _startupKind: StartupKind;
 
 	private _phase: LifecyclePhase = LifecyclePhase.Starting;
+	private _phaseWhen = new Map<LifecyclePhase, Barrier>();
 
 	constructor(
 		@IMessageService private _messageService: IMessageService,
@@ -50,18 +52,36 @@ export class LifecycleService implements ILifecycleService {
 	}
 
 	public set phase(value: LifecyclePhase) {
-		if (this._phase !== value) {
-			this._phase = value;
-			this._onDidChangePhase.fire(value);
+		if (value < this.phase) {
+			throw new Error('Lifecycle cannot go backwards');
+		}
+		if (this._phase === value) {
+			return;
+		}
+
+		this._phase = value;
+		mark(`LifecyclePhase/${LifecyclePhase[value]}`);
+
+		if (this._phaseWhen.has(this._phase)) {
+			this._phaseWhen.get(this._phase).open();
+			this._phaseWhen.delete(this._phase);
 		}
 	}
 
-	public get startupKind(): StartupKind {
-		return this._startupKind;
+	public when(phase: LifecyclePhase): Thenable<any> {
+		if (phase <= this._phase) {
+			return Promise.resolve();
+		}
+		let barrier = this._phaseWhen.get(phase);
+		if (!barrier) {
+			barrier = new Barrier();
+			this._phaseWhen.set(phase, barrier);
+		}
+		return barrier.wait();
 	}
 
-	public get onDidChangePhase(): Event<LifecyclePhase> {
-		return this._onDidChangePhase.event;
+	public get startupKind(): StartupKind {
+		return this._startupKind;
 	}
 
 	public get onWillShutdown(): Event<ShutdownEvent> {

src/vs/workbench/test/workbenchTestServices.ts

@@ -60,6 +60,7 @@ import { ITextResourceConfigurationService } from 'vs/editor/common/services/res
 import { IPosition } from 'vs/editor/common/core/position';
 import { ICommandAction } from 'vs/platform/actions/common/actions';
 import { IHashService } from 'vs/workbench/services/hash/common/hashService';
+import { notImplemented } from 'vs/base/common/errors';
 
 export function createFileInput(instantiationService: IInstantiationService, resource: URI): FileEditorInput {
 	return instantiationService.createInstance(FileEditorInput, resource, void 0);
@@ -1008,10 +1009,12 @@ export class TestLifecycleService implements ILifecycleService {
 	public phase: LifecyclePhase;
 	public startupKind: StartupKind;
 
-	private _onDidChangePhase = new Emitter<LifecyclePhase>();
 	private _onWillShutdown = new Emitter<ShutdownEvent>();
 	private _onShutdown = new Emitter<ShutdownReason>();
 
+	when(): Thenable<void> {
+		throw notImplemented();
+	};
 
 	public fireShutdown(reason = ShutdownReason.QUIT): void {
 		this._onShutdown.fire(reason);
@@ -1021,10 +1024,6 @@ export class TestLifecycleService implements ILifecycleService {
 		this._onWillShutdown.fire(event);
 	}
 
-	public get onDidChangePhase(): Event<LifecyclePhase> {
-		return this._onDidChangePhase.event;
-	}
-
 	public get onWillShutdown(): Event<ShutdownEvent> {
 		return this._onWillShutdown.event;
 	}
@@ -1250,4 +1249,4 @@ export class TestHashService implements IHashService {
 
 export function getRandomTestPath(tmpdir: string, ...segments: string[]): string {
 	return paths.join(tmpdir, ...segments, generateUuid());
-}
\ No newline at end of file
+}