Files
Leonard Hecker 8d9b1ede11 Add proper multithreading support to Arena (#741)
The main change is adding multithreading support in order to make JSON
unit tests work properly. The TLS overhead is not _that bad.

Other changes:
* Switch to `io::Result`, because `AllocError` doesn't
  transmit error codes (meh!)
* Reduce x86 commit chunk size to 32KiB
* Improved performance slightly by inlining harder (`alloc_uninit`)
  and outlining the result unwrap (`alloc_raw_bump`)
2026-01-20 15:11:44 -06:00
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