symfony
diff --git a/‎src/Symfony/Component/Lock/Lock.php
Lines changed: 7 additions & 4 deletions b/‎src/Symfony/Component/Lock/Lock.php
Lines changed: 7 additions & 4 deletions
diff --git a/‎src/Symfony/Component/Lock/LockInterface.php
Lines changed: 3 additions & 1 deletion b/‎src/Symfony/Component/Lock/LockInterface.php
Lines changed: 3 additions & 1 deletion
diff --git a/‎src/Symfony/Component/Lock/Tests/LockTest.php
Lines changed: 14 additions & 0 deletions b/‎src/Symfony/Component/Lock/Tests/LockTest.php
Lines changed: 14 additions & 0 deletions
@@ -105,22 +105,25 @@ public function acquire($blocking = false)
     /**
      * {@inheritdoc}
      */
-    public function refresh()
+    public function refresh($ttl = null)
     {
-        if (!$this->ttl) {
+        if (null === $ttl) {
+            $ttl = $this->ttl;
+        }
+        if (!$ttl) {
             throw new InvalidArgumentException('You have to define an expiration duration.');
         }
 
         try {
             $this->key->resetLifetime();
-            $this->store->putOffExpiration($this->key, $this->ttl);
+            $this->store->putOffExpiration($this->key, $ttl);
             $this->dirty = true;
 
             if ($this->key->isExpired()) {
                 throw new LockExpiredException(sprintf('Failed to put off the expiration of the "%s" lock within the specified time.', $this->key));
             }
 
-            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $this->ttl));
+            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $ttl));
         } catch (LockConflictedException $e) {
             $this->dirty = false;
             $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
 
@@ -38,10 +38,12 @@ public function acquire($blocking = false);
     /**
      * Increase the duration of an acquired lock.
      *
+     * @param float|null $ttl Maximum expected lock duration in seconds.
+     *
      * @throws LockConflictedException If the lock is acquired by someone else
      * @throws LockAcquiringException  If the lock can not be refreshed
      */
-    public function refresh();
+    public function refresh($ttl = null);
 
     /**
      * Returns whether or not the lock is acquired.
 
@@ -97,6 +97,20 @@ public function testRefresh()
         $lock->refresh();
     }
 
+    public function testRefreshCustom()
+    {
+        $key = new Key(uniqid(__METHOD__, true));
+        $store = $this->getMockBuilder(StoreInterface::class)->getMock();
+        $lock = new Lock($key, $store, 10);
+
+        $store
+            ->expects($this->once())
+            ->method('putOffExpiration')
+            ->with($key, 20);
+
+        $lock->refresh(20);
+    }
+
     public function testIsAquired()
     {
         $key = new Key(uniqid(__METHOD__, true));