Index: src/OFObject.h
==================================================================
--- src/OFObject.h
+++ src/OFObject.h
@@ -122,10 +122,11 @@
 	of_point_t origin;
 	of_dimension_t size;
 } of_rectangle_t;
 
 @class OFString;
+@class OFThread;
 
 /**
  * \brief The protocol which all root classes implement.
  */
 @protocol OFObject
@@ -631,10 +632,55 @@
  *		  the selector
  * \param delay The delay after which the selector will be performed
  */
 - (void)performSelector: (SEL)selector
 	     withObject: (id)object1
+	     withObject: (id)object2
+	     afterDelay: (double)delay;
+
+/**
+ * \brief Performs the specified selector on the specified thread after the
+ *	  specified delay.
+ *
+ * \param selector The selector to perform
+ * \param thread The thread on which to perform the selector
+ * \param delay The delay after which the selector will be performed
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     afterDelay: (double)delay;
+
+/**
+ * \brief Performs the specified selector on the specified thread with the
+ *	  specified object after the specified delay.
+ *
+ * \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 delay The delay after which the selector will be performed
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object
+	     afterDelay: (double)delay;
+
+/**
+ * \brief Performs the specified selector on the specified thread with the
+ *	  specified objects after the specified delay.
+ *
+ * \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 delay The delay after which the selector will be performed
+ */
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object1
 	     withObject: (id)object2
 	     afterDelay: (double)delay;
 @end
 
 /**

Index: src/OFObject.m
==================================================================
--- src/OFObject.m
+++ src/OFObject.m
@@ -30,10 +30,12 @@
 # include <sys/syspage.h>
 #endif
 
 #import "OFObject.h"
 #import "OFTimer.h"
+#import "OFThread.h"
+#import "OFRunLoop.h"
 
 #import "OFAllocFailedException.h"
 #import "OFEnumerationMutationException.h"
 #import "OFInitializationFailedException.h"
 #import "OFInvalidArgumentException.h"
@@ -617,10 +619,58 @@
 					 target: self
 				       selector: selector
 					 object: object
 					 object: object
 					repeats: NO];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     afterDelay: (double)delay
+{
+	void *pool = objc_autoreleasePoolPush();
+
+	[[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay
+							    target: self
+							  selector: selector
+							   repeats: NO]];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object
+	     afterDelay: (double)delay
+{
+	void *pool = objc_autoreleasePoolPush();
+
+	[[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay
+							    target: self
+							  selector: selector
+							    object: object
+							   repeats: NO]];
+
+	objc_autoreleasePoolPop(pool);
+}
+
+- (void)performSelector: (SEL)selector
+	       onThread: (OFThread*)thread
+	     withObject: (id)object
+	     withObject: (id)otherObject
+	     afterDelay: (double)delay
+{
+	void *pool = objc_autoreleasePoolPush();
+
+	[[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay
+							    target: self
+							  selector: selector
+							    object: object
+							    object: object
+							   repeats: NO]];
 
 	objc_autoreleasePoolPop(pool);
 }
 
 - (const char*)typeEncodingForSelector: (SEL)selector