roll: third_party/pigweed pw_allocator: Add BlockResult

This CL improves on the previously introduced BlockAllocType to
communicate both the result of allocator requests as well as
side-effects to neighboring blocks.

Instead of being a simple enum and returning a `Result<BlockAllocType>`
from methods like `AllocFirst` and `AllocLast`, `BlockResult` uses
`StatusWithSize` to fit in a single word, and encodes separate values to
for both the previous and next blocks to inidcate how they have changed.

Additionally, `Resize` has been updated to return a `BlockResult`.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/232212
Original-Revision: d3a6358972d5897266e2b5ecf50681a8e8456e5b

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 87f43fec003b4b..d3a6358972d589
Roller-URL: https://ci.chromium.org/b/8734686614846268225
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I93b0acf18d21dee282ffb55353d48cf09bac54ea
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/240623
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
1 file changed
tree: 78693a0a5aadb5e55588381d7bc3d909a6fb3aa8
  1. build_overrides/
  2. docs/
  3. examples/
  4. images/
  5. infra/
  6. libraries/
  7. targets/
  8. third_party/
  9. tools/
  10. .bazelignore
  11. .bazelrc
  12. .bazelversion
  13. .gitattributes
  14. .gitignore
  15. .gitmodules
  16. .gn
  17. .pw_console.yaml
  18. activate.bat
  19. banner.txt
  20. bootstrap.bat
  21. bootstrap.sh
  22. BUILD.bazel
  23. BUILD.gn
  24. BUILDCONFIG.gn
  25. LICENSE
  26. MODULE.bazel
  27. navbar.md
  28. OWNERS
  29. pigweed.json
  30. pyproject.toml
  31. README.md
README.md

Pigweed Sample Project

This repository outlines the recommended way of using Pigweed in a new or existing project. Feel free to fork this repository, or read it as a reference.

For more information see the Pigweed Getting started guide.

Check back for more complex examples and features coming soon!

Getting started

Make sure you've set up Pigweed's prerequisites.

If you're on Windows, you can automate the initial setup by downloading the first-time setup script from cmd.exe:

curl https://pigweed.googlesource.com/pigweed/sample_project/+/main/tools/setup_windows_prerequisites.bat?format=TEXT > setup_pigweed_prerequisites.b64 && certutil -decode -f setup_pigweed_prerequisites.b64 setup_pigweed_prerequisites.bat && del setup_pigweed_prerequisites.b64

Then you can run the script with the following command in cmd.exe:

setup_pigweed_prerequisites.bat

Note: You may see a few UAC prompts as the script installs Git, Python, and enables developer mode.

Once that is done, you can clone this project with the following command:

git clone https://pigweed.googlesource.com/pigweed/sample_project

Environment setup

Pigweed uses a local development environment for most of its tools. This means tools are not installed to your machine, and are instead stored in a directory inside your project (Note: git ignores this directory). The tools are temporarily added to the PATH of the current shell session.

To make sure the latest tooling has been fetched and set up, run the bootstrap command for your operating system:

Windows

bootstrap.bat

Linux & Mac

source ./bootstrap.sh

After tooling updates, you might need to run bootstrap again to ensure the latest tools.

After the initial bootstrap, you can use use the activate scripts to configure the current shell for development without doing a full update.

Windows

activate.bat

Linux & Mac

source ./activate.sh

Building

All of these commands must be run from inside an activated developer environment. See Environment setup

One-shot build

To build the project, documentation, and tests, run the following command in an activated environment:

pw build

Automatically build on file save

Alternatively, if you'd like an automatic rebuild to trigger whenever you save changes to files, use pw watch:

pw watch

Typical workflow

When you pull latest repository changes, run bootstrap:

source ./bootstrap.sh

If you're just launching a new shell session, you can activate instead:

source ./activate.sh

and rebuild with:

pw build

More info and Examples

Extended documentation and examples are built along code changes. You can view them at out/gn/docs/gen/docs/html/index.html.