t.i.d._ConcurrencyPrimitive(object) : class documentation

Acquire, run, release.

This function takes a callable as its first argument and any number of other positional and keyword arguments. When the lock or semaphore is acquired, the callable will be invoked with those arguments.

The callable may return a Deferred; if it does, the lock or semaphore won't be released until that Deferred fires.

Returns

Deferred of function result.