Refactor some code related to wait events "BufferPin" and "Extension"
The following changes are done:
- Addition of WaitEventBufferPin and WaitEventExtension, that hold a
list of wait events related to each category.
- Addition of two functions that encapsulate the list of wait events for
each category.
- Rename BUFFER_PIN to BUFFERPIN (only this wait event class used an
underscore, requiring a specific rule in the automation script).
These changes make a bit easier the automatic generation of all the code
and documentation related to wait events, as all the wait event
categories are now controlled by consistent structures and functions.
Author: Bertrand Drouvot
Discussion: https://postgr.es/m/
c6f35117-4b20-4c78-1df5-
d3056010dcf5@gmail.com
Discussion: https://postgr.es/m/
77a86b3a-c4a8-5f5d-69b9-
d70bbf2e9b98@gmail.com