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 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.