select – wait for events on a set of streams¶
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 Poll class.
select(rlist, wlist, xlist[, timeout])¶
Wait for activity on a set of objects.
This function is provided for compatibility and is not efficient. Usage of
Pollis recommended instead.
eventmaskis 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
select.POLLIN | select.POLLOUT.
Wait for at least one of the registered objects to become ready. Returns list of (
event, ...) tuples,
eventelement 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.