From 756bd975b1a36c00acc3cacecd96205a92f4501b Mon Sep 17 00:00:00 2001
From: Pete Hunt <pete@instagram.com>
Date: Wed, 12 Feb 2014 11:35:20 -0800
Subject: [PATCH] [perf] Measure exclusive render time

Piece of https://github.com/facebook/react/pull/962
---
 src/core/ReactCompositeComponent.js | 40 ++++++++++++++++-------------
 1 file changed, 22 insertions(+), 18 deletions(-)

diff --git a/src/core/ReactCompositeComponent.js b/src/core/ReactCompositeComponent.js
index b8598e9b00..4f6f62a6a8 100644
--- a/src/core/ReactCompositeComponent.js
+++ b/src/core/ReactCompositeComponent.js
@@ -1267,25 +1267,29 @@ var ReactCompositeComponentMixin = {
   /**
    * @private
    */
-  _renderValidatedComponent: function() {
-    var renderedComponent;
-    var previousContext = ReactContext.current;
-    ReactContext.current = this._processChildContext(this._currentContext);
-    ReactCurrentOwner.current = this;
-    try {
-      renderedComponent = this.render();
-    } finally {
-      ReactContext.current = previousContext;
-      ReactCurrentOwner.current = null;
+  _renderValidatedComponent: ReactPerf.measure(
+    'ReactCompositeComponent',
+    '_renderValidatedComponent',
+    function() {
+      var renderedComponent;
+      var previousContext = ReactContext.current;
+      ReactContext.current = this._processChildContext(this._currentContext);
+      ReactCurrentOwner.current = this;
+      try {
+        renderedComponent = this.render();
+      } finally {
+        ReactContext.current = previousContext;
+        ReactCurrentOwner.current = null;
+      }
+      invariant(
+        ReactComponent.isValidComponent(renderedComponent),
+        '%s.render(): A valid ReactComponent must be returned. You may have ' +
+          'returned null, undefined, an array, or some other invalid object.',
+        this.constructor.displayName || 'ReactCompositeComponent'
+      );
+      return renderedComponent;
     }
-    invariant(
-      ReactComponent.isValidComponent(renderedComponent),
-      '%s.render(): A valid ReactComponent must be returned. You may have ' +
-      'returned null, undefined, an array, or some other invalid object.',
-      this.constructor.displayName || 'ReactCompositeComponent'
-    );
-    return renderedComponent;
-  },
+  ),
 
   /**
    * @private