[WIP]: Threading (macOS): implement set_name #96
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Macos has affinity requesting if using the policy for it, there is no dictating to the threads, it's only requesting. Create a signal handler with a feedback flag and yield until we're sure the name is set (probably only needed for the unit_test because it doesn't give the mac thread scheduler a chance)
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A name cannot be set directly on another thread, it can only be set on itself, but it can be staged as a self instruct and send it off with a signal handler to another thread. This can be used for reporting back on the status of the request. This is needed in order to achieve unity where the function throws an error if it fails; we need feedback to know if it failed.
Sadly not as direct or controlled as on windows/linux, but it's possible. Removing the check can result in a bad read during a race condition.
The tester for instance is one such case as it doesn't give the scheduler enough time to process the request but instead immediately requesting a get_name and failing - give it 1 microsecond or allow the flag to report back and it passes, so it's not that mac doesn't want to set the name, it just wants to do it on it's own accord...