040000 tree a0516d432f3c99147ddcdc7aece53a1b9af6fe04	thread.lock.algorithm
040000 tree cf5517e3269993347063c04f5e6b420a8f254a18	thread.lock
040000 tree d5863f6ea76e86adeba17a7b67fde9eaf08370f3	thread.mutex.requirements
040000 tree 09cad4e6e8d94563eb64431beaa572e766fc1781	thread.once