tree c8473723515173f75ef906bb7500daf3ee0b86d3
parent 2f9dd9339f474a9a94c442162ad8f522ec314f0b
author Aaron Green <aarongreen@google.com> 1710857659 +0000
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1710857659 +0000

pw_allocator: Improve UniquePtr ergonomics

This CL modifies a few aspects of UniquePtr. Specifically, it:

* Changes the return type of ``MakeUnique<T>(...)`` to be just
  ``UniquePtr<T>``, with allocation failure handled by returning null.
  This should allow for more succinct, ergonomic code.

* Modifies ``Release`` to return the pointer wrapped by a ``UniquePtr``.

* Provides accessors for ``allocator`` and ``layout``, so that
  ``Release``d values may be ``Delete``d.

Related tests and examples were added or updated.

Change-Id: I4560a1a2329a844abfe4f9bbe6474148d7a9ad71
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/196181
Commit-Queue: Aaron Green <aarongreen@google.com>
Reviewed-by: Taylor Cramer <cramertj@google.com>