[CI] Add Regions and Cowns

[xFrednet]

• sudo CI=green
• Ownership: Extract common ownership functionality for reuse
• Ownership: Extract object graph traversal for reuse
• Ownership: Add regions
• Adding region.c
• IDK something something regions and docs
• Docs and progress
• This is ugly but cleanup is tomorrow
• Nicer union-find code 🎉
• More and more progress
• parent -> owner rename
• More clenaup
• More fun!
• Something compiles I guess
• Why is there no formatter!!!
• Progres progress progresss
• Ownership: Add to region
• Ownership: Plan in TODOs
• Ownership: expand invariant for regions
• Fix bug from bad interaction with incremental GC.
• Small Fixes
• Ownership: New regions module
• Ownership: The first regions and exceptions...
• Ownership: This is a .. journey
• Ownership: Bugfixes!!
• Ownership: _PyRegion_AddRefs
• Ownership: Start writing Tests
• More tests
• Ownership more tests
• Progress and interesting bugs
• Skybreaker!!!!
• Small bug fixes, progress and work on the wekend
• Cleanup and exception'al problems
• Actual text output o.O
• I believe staging region references works now?
• How is the bug still there
• Adding more write barriers
• Try close backend (There is no way this works)
• Try close testing and debugging one thing at a time
• Regions: From asserts to seg faults
• Regions: Cleaning works
• Regions: Debugging and dealloc/clear routines
• Region: New BridgeObject to access fields in internal regions,c
• Region: Move name into bridge object data
• Regions: Clear region on dealloc to allow region dealloc
• Regions: Planning for next week
• Region: extract objects from GC and track in Region
• Region: Notes on cowns
• Minor fixes to make it compile with GCC
• More GCC fixes
• Cowns: Drafting up cown callbacks
• Cown: Store cown in region
• TODOs
• Cowns: Add Cown Object
• Something compiles, but that doesn't mean much in C
• More is somehow compiling
• Basic cowns seems to be working
• Tests say more than a 100 words
• Minor fixes
• Disable GC asserts broken by regions
• Test cown.value field
• Cown REPR and cleanup
• Release the cowns!!!!
• Cowns: Acquire done :D
• Cowns: Use separate interpreter and thread ID and more methods
• Cowns: More tests :D
• Cowns: Release unused state field
• Cown: Complete broken docs
• Region: More Region object into core
• Region: Remove _ prefix from write barriers
• More Write barriers... Literally
• Clean up
• Improve WB
• Stage Refs
• Slow steps, still LRC bugs
• FML, tests aren't even starting
• Tests are working-ish again
• Slow and steady wins the race
• Less rogue LRCs
• Another bug hunted and KILLED
• OSC one off, maybe due to open following pending merge tag?
• Better parent lookup
• Fix Union-Merge traversal with pending and other stuff
• More _PyRegion_Get to pycore header
• Document missing dict tests and add 4 new ones
• Migrate something to use regions
• Dict views mostly working
• Broken code and and fixed crashes
• Normal dictionary construction works now :D
• List and tuple write barriers that break everything
• More tests are passing, let's see
• Cleaup
• Regions: Track bridges of subregions in parent GC list
• Regions: Unfailable RemoveRef, more barriers in dicts and new TakeRefs
  • Region: More write barrier for dicts
  • Regions WB in dict.popitem()
  • Regions: dict write barrier in setdefault
  • The tests finally pass!
  • Regions: Add LRC test and fix managed dict stuff
  • Region: Improve cleaning call to clean dirty subregions
  • Region: Add PyRegion_TakeRefs
  • Region: RemoveRef can no longer fail
  • Region: Store reason for dirty
  • Regions: clean() now returns the number of cleaned regions
• Cowns: Add option to acquire a cown for the GC
• Cown: Add new tests for releasing open regions
• Regions: Correct off-by-one LRC and Cown release code
• Regions: Prevent the GC from setting flags in non-local objects
• Regions: Add _PyDict_Reachable to also visit unicode keys
• Region: Fix write barrier for instance attribute
• Regions: Make Region's tp_clear fail
• Regions: Fix warning with object cast
• Region: Fix freelist usage and keep region for dealloc
• Regions: Fix Of-by-one LRC error
• Regions: Fix stack ref LRC bug
• Regions: Fix another off-by-one in stackref
• Cowns: Allow switching owner to IP and back to GC
• Regions: Add PyRegion_AddRefsArray() write barrier
• Cowns: Fix switching to GC
• Cowns: Refactor release and switching
• Cowns: Set value to None if cannot switch to GC
• Regions: Don't randomly rip out objects out of GC lists
• Regions: Correct _PyRegion_AddRefsArray() write barrier
• Regions: Add PyRegion_SameRegion function
• Remove _PyRegion_SignalDealloc
• Clear region for recycled being objects
• Add basic movability