Add TurboModule Setup Metrics

Author: a-dilettante

React/Base/RCTBridge.h

@@ -49,7 +49,7 @@ RCT_EXTERN NSString *const RCTJavaScriptDidFailToLoadNotification;
 RCT_EXTERN NSString *const RCTDidInitializeModuleNotification;
 
 /**
- * This notification fires each time a native module is setup after it is initialized. The
+ * This notification fires each time a module is setup after it is initialized. The
  * `RCTDidSetupModuleNotificationModuleNameKey` key will contain a reference to the module name and
  * `RCTDidSetupModuleNotificationSetupTimeKey` will contain the setup time in ms.
  */

React/Base/RCTPerformanceLogger.h

@@ -21,6 +21,7 @@ typedef NS_ENUM(NSUInteger, RCTPLTag) {
   RCTPLNativeModulePrepareConfig,
   RCTPLNativeModuleMainThreadUsesCount,
   RCTPLNativeModuleSetup,
+  RCTPLTurboModuleSetup,
   RCTPLJSCWrapperOpenLibrary,
   RCTPLBridgeStartup,
   RCTPLTTI,

React/Base/RCTPerformanceLogger.m

@@ -42,6 +42,7 @@ - (instancetype)init
       @"NativeModuleInjectConfig",
       @"NativeModuleMainThreadUsesCount",
       @"NativeModuleSetup",
+      @"TurboModuleSetup",
       @"JSCWrapperOpenLibrary",
       @"JSCExecutorSetup",
       @"BridgeStartup",

ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm

@@ -10,6 +10,7 @@
 #import <cassert>
 
 #import <React/RCTBridge+Private.h>
+#import <React/RCTPerformanceLogger.h>
 #import <React/RCTBridgeModule.h>
 #import <React/RCTCxxModule.h>
 #import <React/RCTLog.h>
@@ -67,19 +68,45 @@ - (instancetype)initWithRuntime:(jsi::Runtime *)runtime
 
       __strong __typeof(self) strongSelf = weakSelf;
 
+      auto moduleName = name.c_str();
+      auto moduleWasNotInitialized = ![strongSelf moduleIsInitialized:moduleName];
+      if (moduleWasNotInitialized) {
+        [strongSelf->_bridge.performanceLogger markStartForTag:RCTPLTurboModuleSetup];
+      }
+
       /**
        * By default, all TurboModules are long-lived.
        * Additionally, if a TurboModule with the name `name` isn't found, then we
        * trigger an assertion failure.
        */
-      return [strongSelf provideTurboModule: name.c_str()];
+      auto turboModule = [strongSelf provideTurboModule:moduleName];
+
+      if (moduleWasNotInitialized && [strongSelf moduleIsInitialized:moduleName]) {
+        [strongSelf->_bridge.performanceLogger markStopForTag:RCTPLTurboModuleSetup];
+        [strongSelf notifyAboutTurboModuleSetup:moduleName];
+      }
+
+      return turboModule;
     };
 
     _binding = std::make_shared<react::TurboModuleBinding>(moduleProvider);
   }
   return self;
 }
 
+- (void)notifyAboutTurboModuleSetup:(const char*)name {
+    NSString *moduleName = [[NSString alloc] initWithUTF8String:name];
+    if (moduleName) {
+      int64_t setupTime = [self->_bridge.performanceLogger durationForTag:RCTPLTurboModuleSetup];
+      [[NSNotificationCenter defaultCenter] postNotificationName:RCTDidSetupModuleNotification
+                                                          object:nil
+                                                        userInfo:@{
+                                                                  RCTDidSetupModuleNotificationModuleNameKey: moduleName,
+                                                                  RCTDidSetupModuleNotificationSetupTimeKey: @(setupTime)
+                                                                  }];
+    }
+}
+
 /**
  * Given a name for a TurboModule, return a C++ object which is the instance
  * of that TurboModule C++ class. This class wraps the TurboModule's ObjC instance.