Index: src/OFObject.h
==================================================================
--- src/OFObject.h
+++ src/OFObject.h
@@ -635,10 +635,54 @@
 - (void)performSelector: (SEL)selector
 	     withObject: (id)object1
 	     withObject: (id)object2
 	     afterDelay: (double)delay;
 
+/**
+ * \brief Performs the specified selector on the specified thread.
+ *
+ * \param selector The selector to perform
+ * \param thread The thread on which to perform the selector
+ * \param waitUntilDone Whether to wait until the perform finished
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	  waitUntilDone: (BOOL)waitUntilDone;
+
+/**
+ * \brief Performs the specified selector on the specified thread with the
+ *	  specified object.
+ *
+ * \param selector The selector to perform
+ * \param thread The thread on which to perform the selector
+ * \param object The object that is passed to the method specified by the
+ *		 selector
+ * \param waitUntilDone Whether to wait until the perform finished
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object
+	  waitUntilDone: (BOOL)waitUntilDone;
+
+/**
+ * \brief Performs the specified selector on the specified thread with the
+ *	  specified objects.
+ *
+ * \param selector The selector to perform
+ * \param thread The thread on which to perform the selector
+ * \param object1 The first object that is passed to the method specified by the
+ *		 selector
+ * \param object2 The second object that is passed to the method specified by
+ *		  the selector
+ * \param waitUntilDone Whether to wait until the perform finished
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object1
+	     withObject: (id)object2
+	  waitUntilDone: (BOOL)waitUntilDone;
+
 /**
  * \brief Performs the specified selector on the specified thread after the
  *	  specified delay.
  *
  * \param selector The selector to perform

Index: src/OFObject.m
==================================================================
--- src/OFObject.m
+++ src/OFObject.m
@@ -620,10 +620,67 @@
 					 target: self
 				       selector: selector
 					 object: object1
 					 object: object2
 					repeats: NO];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	  waitUntilDone: (BOOL)waitUntilDone
+{
+	void *pool = objc_autoreleasePoolPush();
+	OFTimer *timer = [OFTimer timerWithTimeInterval: 0
+						 target: self
+					       selector: selector
+						repeats: NO];
+	[[thread runLoop] addTimer: timer];
+
+	if (waitUntilDone)
+		[timer waitUntilDone];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object
+	  waitUntilDone: (BOOL)waitUntilDone
+{
+	void *pool = objc_autoreleasePoolPush();
+	OFTimer *timer = [OFTimer timerWithTimeInterval: 0
+						 target: self
+					       selector: selector
+						 object: object
+						repeats: NO];
+	[[thread runLoop] addTimer: timer];
+
+	if (waitUntilDone)
+		[timer waitUntilDone];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object1
+	     withObject: (id)object2
+	  waitUntilDone: (BOOL)waitUntilDone
+{
+	void *pool = objc_autoreleasePoolPush();
+	OFTimer *timer = [OFTimer timerWithTimeInterval: 0
+						 target: self
+					       selector: selector
+						 object: object1
+						 object: object2
+						repeats: NO];
+	[[thread runLoop] addTimer: timer];
+
+	if (waitUntilDone)
+		[timer waitUntilDone];
 
 	objc_autoreleasePoolPop(pool);
 }
 
 - (void)performSelector: (SEL)selector