pollableSourceNew
Utility method for #GPollableInputStream and #GPollableOutputStream implementations. Creates a new #GSource that expects a callback of type #GPollableSourceFunc. The new source does not actually do anything on its own; use g_source_add_child_source() to add other sources to it to cause it to trigger.
Return
the new #GSource.
Since
2.28
Parameters
pollableStream
the stream associated with the new source