[actor shutdown] Add a context macro to thread_executor #72
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Summary
Introduces a new
context!
macro in thread_executor that just makes constructing context objects less visually intrusive (8 lines per instantiation!). Code is much easier to read now.Motivation
Part of #29.
The changes for actor shutdown will introduce more instances in which a context object will be created from a system context. It made sense to invest in a macro here to save some typing. Took a few iterations to get this working right (so many TIL moments).
Test Plan
If it compiles it's good. This change should be functionally equivalent to what existed before.