Part of twisted.internet.defer View Source View In Hierarchy
|Instance Variables||tokens||At most this many users may acquire this semaphore at once.
|limit||The difference between |
|Method||acquire||Attempt to acquire the token.|
|Method||release||Release the token.|
|Method||_cancelAcquire||Remove a deferred d from our waiting list, as the deferred has been canceled.|
Inherited from _ConcurrencyPrimitive:
|Method||run||Acquire, run, release.|
Remove a deferred d from our waiting list, as the deferred has been canceled.Note: We do not need to wrap this in a try/except to catch d not being in self.waiting because this canceller will not be called if d has fired. release() pops a deferred out of self.waiting and calls it, so the canceller will no longer be called.
|Parameters||d||The deferred that has been canceled.|