[roll] Roll fuchsia [bt] std::sync -> fuchsia_sync
The behaviors of fuchsia_sync's locks are very similar to those from
the standard library. std::sync::Mutex is a port of the libsync
mutex that fuchsia_sync::Mutex links against, and fuchsia_sync::RwLock
is very similar to the std::sync::RwLock's futex-based approach. However
there are some important differences:
1. fuchsia_sync supports lock cycle detection which surfaces many
deadlocks. See the documentation[0] for more details.
2. fuchsia_sync doesn't support lock poisoning because most of
Fuchsia's code is compiled with panic=abort.
a. saves memory with smaller types
b. avoids noop error handling syntax and branches
[0]: https://fuchsia.dev/fuchsia-src/development/debugging/lock_cycles
Original-Bug: 465178981
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1439902
Original-Revision: f4cf144600caf7d91c1672913e5c696887118dd4
GitOrigin-RevId: 84b4bd296b10b332cad25a2286bf45be51dedd4e
Change-Id: I8168a96e6340c89a25c3402fd16f47dbe872762f
This repository contains Fuchsia's Global Integration manifest files.
All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.
Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.
First install Jiri.
Next run:
$ jiri init $ jiri import minimal https://fuchsia.googlesource.com/integration $ jiri update
Third party projects should have their own subdirectory in ./third_party.