From 7030fdd76759de41fd0937f78f7be392ed63ebfb Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Tue, 13 Oct 2015 08:43:15 +0200
Subject: [PATCH] simplified logic and improve perf slightly

---
 CHANGELOG                |  1 +
 lib/Twig/Environment.php | 14 ++++----------
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index ec589ec10..21b21f938 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 * 1.22.3 (2015-XX-XX)
 
+ * improved performance when checking template freshness
  * changed template cache names to take into account the Twig C extension
 
 * 1.22.2 (2015-09-22)
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index a5b0883ba..02817b26d 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -455,15 +455,6 @@ class Twig_Environment
      */
     public function isTemplateFresh($name, $time)
     {
-        if(0 === $this->lastModifiedExtension) {
-            foreach ($this->extensions as $extension) {
-                $r = new ReflectionObject($extension);
-                if (($extensionTime = filemtime($r->getFileName())) > $this->lastModifiedExtension) {
-                    $this->lastModifiedExtension = $extensionTime;
-                }
-            }
-        }
-
         return $this->lastModifiedExtension <= $time && $this->getLoader()->isFresh($name, $time);
     }
 
@@ -770,7 +761,10 @@ class Twig_Environment
             throw new LogicException(sprintf('Unable to register extension "%s" as extensions have already been initialized.', $extension->getName()));
         }
 
-        $this->lastModifiedExtension = 0;
+        $r = new ReflectionObject($extension);
+        if (($extensionTime = filemtime($r->getFileName())) > $this->lastModifiedExtension) {
+            $this->lastModifiedExtension = $extensionTime;
+        }
 
         $this->extensions[$extension->getName()] = $extension;
     }