Class: cogen.core.pollers.Poller
A poller just checks if there are ready-sockets for the operations.
The operations are not done here, they are done in the socket ops instances.
Methods
__init__ (self, scheduler)
__len__ (self)
Returns number of waiting operations registered in the poller.
add (self, op, coro)
Implemented by the child class that actualy implements the polling.
Registers an operation.
handle_errored (self, desc)
Handles descriptors that have errors.
remove (self, op, coro)
Implemented by the child class that actualy implements the polling.
Removes a operation.
run (self, timeout=0)
Implemented by the child class that actualy implements the polling.
Calls the underlying OS polling mechanism and runs the operations for
any ready descriptor.
run_once (self, fdesc, waiting_ops)
Run a operation, remove it from the poller and return the result.
Called from the main poller loop.
run_operation (self, op)
Run the socket op and return result or exception.
run_or_add (self, op, coro)
Perform operation or add the operation in the poller if socket isn't
ready. Called from the scheduller.
waiting_op (self, testcoro)
Returns the registered operation for some specified coroutine.