Method Join

shadercompiler/WorkQueue.h:48–59

	}

	void Join()
	{
		for( unsigned i = 0; i < m_workerThreads.size(); ++i )
		{
			PutPtr( nullptr );
		}
		for( auto& thread : m_workerThreads )
		{
			thread.join();
		}
		m_workerThreads.clear();
	}

private:
	void PutPtr( T* item )