[roll] Roll fuchsia [ui] 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/+/1440162
Original-Revision: 076d09b7604e9d127854432b8a33de6bb9fb4c8e
GitOrigin-RevId: 55c1e10be0632beb16f02506e96ca7b1dacf2406
Change-Id: Ieb483df825e2c1a0825184cfd641399c701c5c79
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.