RFC 7231 HYPERTEXT SWITCH PROTOCOL HTTP 1 1: SEMANTICS AND CONTENT MATERIAL

This can be referred to as from any process or thread, not onlythe process or thread which originally acquired the lock. With the block argument set to False, the method call does notblock. If the lock is at present in a locked state, return False;in any other case set the lock to a locked state and return True. If a course of is killed whereas it