[roll] Roll fuchsia [superproject] Roll llvm-project/libc [libc] Replace `MutexLock` with `cpp::lock_guard` (#89340)

This PR address issue #89002.

#### Changes in this PR

* Added a simple implementation of `cpp::lock_guard` (an equivalent of
`std::lock_guard`) in libc/src/__support/CPP inspired by the libstdc++
implementation
* Added tests for `cpp::lock_guard` in
/libc/test/src/__support/CPP/mutex_test.cpp
* Replaced all references to `MutexLock` with `cpp::lock_guard`

---------

Co-authored-by: Guillaume Chatelet <gchatelet@google.com>
GitOrigin-RevId: f0650b2e90eaa3005e83a5427a317e16f9851aab
Original-Revision: af18d81797424e271f882be0628688606e004c43
Roller-URL: https://ci.chromium.org/b/8748427434623376753
CQ-Do-Not-Cancel-Tryjobs: true
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1045680
Original-Revision: af324ceab8ba83c62a3ddf3a0a0dde52db22a447
Change-Id: I3bc3edebdca1bc7b766123563e5b362b038a2142
1 file changed
tree: a17da68c14c51a0f7eeff39fe09c51c7707395c8
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cts
  6. firmware
  7. flower
  8. jiri.lock
  9. MILESTONE
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
  15. toolchain
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

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 via the IRC channel #fuchsia on Freenode.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.