This module provides functions to wait for events on streams (select streams which are ready for operations).
Polling is an efficient way of waiting for read/write activity on multiple objects. Current objects that support polling are:
Create an instance of the
Wait for activity on a set of objects.
This function is provided for compatibility and is not efficient. Usage of
Poll is recommended instead.
obj for polling.
eventmask is logical OR of:
select.POLLIN - data available for reading
select.POLLOUT - more data can be written
select.POLLERR - error occurred
select.POLLHUP - end of stream/connection termination detected
eventmask defaults to
select.POLLIN | select.POLLOUT.
obj from polling.
Wait for at least one of the registered objects to become ready. Returns list of (
event, …) tuples,
event element specifies which events happened with a stream and is a combination of
select.POLL* constants described above. There may be other elements in tuple, depending on a platform and version, so don’t assume that its size is 2. In case of timeout, an empty list is returned.
Timeout is in milliseconds.