Remove redundant directory separator normalization in deps.json parsing#125251
Merged
elinor-fung merged 3 commits intodotnet:mainfrom Mar 19, 2026
Merged
Remove redundant directory separator normalization in deps.json parsing#125251elinor-fung merged 3 commits intodotnet:mainfrom
elinor-fung merged 3 commits intodotnet:mainfrom
Conversation
Normalize paths to the platform separator (DIR_SEPARATOR) once in the deps_asset_t constructor instead of storing them with '/' and re-normalizing on every use. Previously: - The constructor normalized '\\' -> '/' (canonical form) - get_optional_path() normalized '/' -> DIR_SEPARATOR at parse time (for local_path, undone by the constructor) - normalize_dir_separator() converted '/' -> DIR_SEPARATOR on every call to to_dir_path() and to_package_path(), allocating a new string each time Now: - The constructor normalizes directly to DIR_SEPARATOR (one allocation) - normalize_dir_separator() is removed entirely - get_deps_filename() is removed in favor of the equivalent get_filename() - Placeholder checks updated to use DIR_SEPARATOR instead of hardcoded '/' Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Restructure to_dir_path to pass const references directly to to_path when the relative path doesn't need modification (local_path set, or runtimepack). This eliminates a string allocation per call in those two fast paths. Also fix 'helperthat' typo in deps_resolver.cpp comment. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Contributor
|
Tagging subscribers to this area: @agocke, @jeffschwMSFT, @elinor-fung |
Contributor
There was a problem hiding this comment.
Pull request overview
This PR optimizes startup performance by normalizing directory separator characters in deps.json paths exactly once in the deps_asset_t constructor (to the platform's DIR_SEPARATOR), rather than normalizing from '/' to DIR_SEPARATOR on every access. This removes the normalize_dir_separator helper function and the get_deps_filename helper function, and updates placeholder detection and path-utility calls to work with already-platform-normalized paths.
Changes:
deps_entry.h: Thedeps_asset_tconstructor now normalizesrelative_pathandlocal_pathtoDIR_SEPARATORin place of the previous'/'-normalizationdeps_entry.cpp: Removesnormalize_dir_separator(), usesasset.relative_pathdirectly, and refactorsto_dir_pathfor claritydeps_resolver.cpp: Removesget_deps_filename(), updates placeholder checks from"/_._"toDIR_SEPARATOR_STR "_._", and replacesget_deps_filenamewithget_filename
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
src/native/corehost/hostpolicy/deps_entry.h |
Constructor normalizes paths to platform separator once (instead of storing with '/' and converting on every use) |
src/native/corehost/hostpolicy/deps_entry.cpp |
Removes normalize_dir_separator(), refactors to_dir_path to use pre-normalized paths, simplifies to_package_path |
src/native/corehost/hostpolicy/deps_resolver.cpp |
Removes get_deps_filename(), fixes placeholder suffix check for platform-normalized paths |
Contributor
There was a problem hiding this comment.
Pull request overview
Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.
You can also share your feedback on Copilot code review. Take the survey.
This was referenced Mar 17, 2026
AaronRobinsonMSFT
approved these changes
Mar 17, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Normalize paths to the platform separator (DIR_SEPARATOR) once in the
deps_asset_t constructor instead of normalizing them to '/` to store them
and re-normalizing to platform separator on every use.
Removes >400 allocations on startup.
@dotnet/appmodel @AaronRobinsonMSFT