[roll third_party/pigweed] pw_sync_baremetal: Add simple mutex implementation

Adds a dummy mutex implementation for baremetal configurations.

The provided implementation makes a single attempt to acquire the
lock and asserts if it is unavailable. It does not perform interrupt
masking or disable global interrupts, so this implementation does
not support simultaneous multi-threaded environments including IRQs,
and is only meant to prevent data corruption.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/45721

third_party/pigweed Rolled-Commits: 3d61b3278bde059..f605f2d2ed8839b
Roller-URL: https://ci.chromium.org/b/8846873954652857312
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8846873954652857312
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If65bf252c9077589954589b87543ec799643d0ee
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/46000
Reviewed-by: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
1 file changed
tree: 8ef3b03bae61dd988c8d92ac0ac51d73e9be645f
  1. applications/
  2. build_overrides/
  3. pw_board_led/
  4. pw_board_led_arduino/
  5. pw_board_led_host/
  6. pw_board_led_stm32cubef4/
  7. pw_board_led_stm32f429i_disc1/
  8. pw_spin_delay/
  9. pw_spin_delay_arduino/
  10. pw_spin_delay_host/
  11. pw_spin_delay_stm32cubef4/
  12. pw_spin_delay_stm32f429i_disc1/
  13. pw_sys_io_stm32cubef4/
  14. targets/
  15. third_party/
  16. tools/
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .gn
  21. activate.bat
  22. banner.txt
  23. bootstrap.bat
  24. bootstrap.sh
  25. BUILD.gn
  26. BUILDCONFIG.gn
  27. env_setup.json
  28. navbar.md
  29. PW_PLUGINS
  30. README.md
README.md

Pigweed Experimental

This repository contains experimental pigweed modules.

Repository setup

Clone this repo with --recursive to get all required submodules.

git clone --recursive https://pigweed.googlesource.com/pigweed/experimental

This will pull the Pigweed source repository into third_party/pigweed. If you already cloned but forgot to --recursive run git submodule update --init to pull all submodules.