add application.experimental.rendererProfiling setting (defaults to false) (microsoft#164237)

microsoft#163819

Author: jrieken

src/vs/workbench/contrib/performance/electron-sandbox/performance.contribution.ts

@@ -9,6 +9,8 @@ import { Extensions, IWorkbenchContributionsRegistry } from 'vs/workbench/common
 import { StartupProfiler } from './startupProfiler';
 import { StartupTimings } from './startupTimings';
 import { RendererProfiling } from 'vs/workbench/contrib/performance/electron-sandbox/rendererAutoProfiler';
+import { IConfigurationRegistry, Extensions as ConfigExt } from 'vs/platform/configuration/common/configurationRegistry';
+import { localize } from 'vs/nls';
 
 
 Registry.as<IWorkbenchContributionsRegistry>(Extensions.Workbench).registerWorkbenchContribution(
@@ -29,3 +31,16 @@ Registry.as<IWorkbenchContributionsRegistry>(Extensions.Workbench).registerWorkb
 	StartupTimings,
 	LifecyclePhase.Eventually
 );
+
+Registry.as<IConfigurationRegistry>(ConfigExt.Configuration).registerConfiguration({
+	id: 'application',
+	order: 100,
+	type: 'object',
+	'properties': {
+		'application.experimental.rendererProfiling': {
+			type: 'boolean',
+			default: false,
+			markdownDescription: localize('experimental.rendererProfiling', "When enabled slow renderers are automatically profiled")
+		}
+	}
+});

src/vs/workbench/contrib/performance/electron-sandbox/rendererAutoProfiler.ts

@@ -5,6 +5,7 @@
 
 import { timeout } from 'vs/base/common/async';
 import { generateUuid } from 'vs/base/common/uuid';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { IEnvironmentService } from 'vs/platform/environment/common/environment';
 import { ILogService } from 'vs/platform/log/common/log';
 import { INativeHostService } from 'vs/platform/native/electron-sandbox/native';
@@ -20,6 +21,7 @@ export class RendererProfiling {
 		@IEnvironmentService environmentService: IEnvironmentService,
 		@ILogService logService: ILogService,
 		@ITimerService timerService: ITimerService,
+		@IConfigurationService configService: IConfigurationService
 	) {
 
 		const devOpts = parseExtensionDevOptions(environmentService);
@@ -50,6 +52,11 @@ export class RendererProfiling {
 					return;
 				}
 
+				if (!configService.getValue('application.experimental.rendererProfiling')) {
+					logService.debug(`[perf] SLOW task detected (${maxDuration}ms) but renderer profiling is disabled via 'application.experimental.rendererProfiling'`);
+					return;
+				}
+
 				const sessionId = generateUuid();
 				// start heartbeat monitoring
 				logService.warn(`[perf] Renderer reported VERY LONG TASK (${maxDuration}ms), starting profiling session '${sessionId}'`);