Index: src/OFThread.h
==================================================================
--- src/OFThread.h
+++ src/OFThread.h
@@ -133,10 +133,18 @@
 /**
  * Locks the mutex.
  */
 - lock;
 
+/**
+ * Tries to lock the mutex and returns a boolean whether the mutex could be
+ * acquired.
+ *
+ * \return A boolean whether the mutex could be acquired
+ */
+- (BOOL)tryLock;
+
 /**
  * Unlocks the mutex.
  */
 - unlock;
 @end

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -218,10 +218,15 @@
 	if (!of_mutex_lock(&mutex))
 		@throw [OFMutexLockFailedException newWithClass: isa];
 
 	return self;
 }
+
+- (BOOL)tryLock
+{
+	return of_mutex_trylock(&mutex);
+}
 
 - unlock
 {
 	if (!of_mutex_unlock(&mutex))
 		@throw [OFMutexUnlockFailedException newWithClass: isa];

Index: src/threading.h
==================================================================
--- src/threading.h
+++ src/threading.h
@@ -114,10 +114,20 @@
 #elif defined(_WIN32)
 	EnterCriticalSection(mutex);
 	return YES;
 #endif
 }
+
+static OF_INLINE BOOL
+of_mutex_trylock(of_mutex_t *mutex)
+{
+#if defined(OF_HAVE_PTHREADS)
+	return (pthread_mutex_trylock(mutex) ? NO : YES);
+#elif defined(_WIN32)
+	return (TryEnterCriticalSection(mutex) ? YES : NO);
+#endif
+}
 
 static OF_INLINE BOOL
 of_mutex_unlock(of_mutex_t *mutex)
 {
 #if defined(OF_HAVE_PTHREADS)