Index: src/OFThread.h
==================================================================
--- src/OFThread.h
+++ src/OFThread.h
@@ -17,10 +17,12 @@
 #import "OFObject.h"
 #import "OFList.h"
 
 #import "threading.h"
 
+@class OFDate;
+
 /**
  * \brief A class for Thread Local Storage keys.
  */
 @interface OFTLSKey: OFObject
 {
@@ -114,10 +116,15 @@
 /**
  * Suspends execution of the current thread for N milliseconds.
  */
 + (void)sleepForNMilliseconds: (unsigned int)msecs;
 
+/**
+ * Suspends execution of the current thread until the specified date.
+ */
++ (void)sleepUntilDate: (OFDate*)date;
+
 /**
  * Yields a processor voluntarily and moves the thread at the end of the queue
  * for its priority.
  */
 + (void)yield;

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -23,10 +23,11 @@
 # include <windows.h>
 #endif
 
 #import "OFThread.h"
 #import "OFList.h"
+#import "OFDate.h"
 #import "OFAutoreleasePool.h"
 #import "OFExceptions.h"
 
 #import "threading.h"
 
@@ -101,10 +102,31 @@
 	usleep(msecs * 1000);
 #else
 	Sleep(msecs);
 #endif
 }
+
++ (void)sleepUntilDate: (OFDate*)date
+{
+	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
+	OFDate *now = [OFDate date];
+	int64_t sec;
+	uint32_t usec;
+
+	if ((sec = [date timeIntervalSinceDate: now]) < 0)
+		@throw [OFOutOfRangeException newWithClass: self];
+
+	usec = [date microsecondsOfTimeIntervalSinceDate: now];
+
+	[pool release];
+
+#ifndef _WIN32
+	usleep(sec * 1000000 + usec);
+#else
+	Sleep(sec * 1000 + usec / 1000);
+#endif
+}
 
 + (void)yield
 {
 #ifndef _WIN32
 	sched_yield();