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dawn / dawn / 20a6ca0041379a0aebeca7fdff753416a4ab1ffa
commit20a6ca0041379a0aebeca7fdff753416a4ab1ffa[log] [tgz]
authorCorentin Wallez <cwallez@chromium.org>Mon Dec 19 11:14:54 2022 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Dec 19 11:14:54 2022 +0000
tree9391add8dddcf84a9b4a4809ba4fc90bf824514d
parentad541a7cdd92c10cfb5433440a5783e492d3f032 [diff]
generator_lib.py: Fix exception when racing for dir creation.

The generator_lib.py processing of file renders would check that the
output directory doesn't exist and if needed, would create it. However
by default makedirs errors if the path already exists. This caused
issues when multiple generator_lib.py generators with the same output
dir would run in parallel in builds, because there can be a race where:

 - GeneratorA: Check os.path.exists -> returns False
 - GeneratorB: Check os.path.exists -> returns False
 - GeneratorB: os.makedirs -> Ok
 - GeneratorA: os.makedirs -> Exception, fails the build.

Instead use os.makedirs(exist_ok=True) inconditionally to remove this
racy behavior.

Bug: None
Change-Id: I5cb401a1df11a3640faeea94c15cb54236edc05a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114521
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
1 file changed
tree: 9391add8dddcf84a9b4a4809ba4fc90bf824514d
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. generator/
  5. include/
  6. infra/
  7. scripts/
  8. src/
  9. test/
  10. third_party/
  11. tools/
  12. webgpu-cts/
  13. .clang-format
  14. .clang-tidy
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. AUTHORS
  19. BUILD.gn
  20. CMakeLists.txt
  21. CMakeSettings.json
  22. CODE_OF_CONDUCT.md
  23. codereview.settings
  24. CONTRIBUTING.md
  25. CPPLINT.cfg
  26. dawn.json
  27. dawn_wire.json
  28. DEPS
  29. DIR_METADATA
  30. Doxyfile
  31. go.mod
  32. go.sum
  33. go_presubmit_support.py
  34. LICENSE
  35. OWNERS
  36. PRESUBMIT.py
  37. README.chromium
  38. README.md
  39. tint_overrides_with_defaults.gni
README.md

Dawn's logo: a sun rising behind a stylized mountain inspired by the WebGPU logo. The text Dawn is written below it.

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the work-in-progress WebGPU standard. More precisely it implements webgpu.h that is a one-to-one mapping with the WebGPU IDL. Dawn is meant to be integrated as part of a larger system and is the underlying implementation of WebGPU in Chromium.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
    • The webgpu.h version that Dawn implements.
    • A C++ wrapper for the webgpu.h.
  • A “native” implementation of WebGPU using platforms' GPU APIs: D3D12, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.