*
 * The specified object is first retained and then the object stored before is
 * released. You can specify nil as object if you want the old object to be
 * released and don't want any new object for the TLS key.
 *
 * \param key The Thread Local Storage key
 * \param obj The object the Thread Local Storage key will be set to
 * \return The old object, autoreleased
 */
+ (id)setObject: (id)obj
+ (void)setObject: (id)obj
      forTLSKey: (OFTLSKey*)key;

/**
 * Returns the object for the specified Thread Local Storage key.
 *
 * The returned object is <i>not</i> retained and autoreleased for performance
 * reasons!

}

+ threadWithObject: (id)obj
{
	return [[[self alloc] initWithObject: obj] autorelease];
}

+ (id)setObject: (id)obj
+ (void)setObject: (id)obj
      forTLSKey: (OFTLSKey*)key
{
	id old = of_tlskey_get(key->key);

	if (!of_tlskey_set(key->key, [obj retain]))
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	return [old autorelease];
	[old release];
}

+ (id)objectForTLSKey: (OFTLSKey*)key
{
	return of_tlskey_get(key->key);
	return [[of_tlskey_get(key->key) retain] autorelease];
}

+ (OFThread*)currentThread
{
	return of_tlskey_get(thread_self);
	return [[of_tlskey_get(thread_self) retain] autorelease];
}

+ (void)sleepForTimeInterval: (int64_t)sec
{
	if (sec < 0)
		@throw [OFOutOfRangeException newWithClass: self];