http: use v8::Array::New() with a prebuilt vector #46447
Merged
Conversation
This file contains 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
Avoid using v8::Array::Set() which results in JS execution and is thus slow. Prebuild the vector in C++ land and build the JS array directly with that vector whereever possible.
|
Review requested:
|
nodejs-github-bot
added
c++
This comment was marked as outdated.
This comment was marked as outdated.
addaleax
approved these changes
Jan 31, 2023
ronag
reviewed
Jan 31, 2023
ronag
reviewed
Jan 31, 2023
ronag
reviewed
Jan 31, 2023
ronag
reviewed
Jan 31, 2023
ronag
approved these changes
Jan 31, 2023
RaisinTen
approved these changes
Feb 3, 2023
Flarna
reviewed
Feb 3, 2023
| ConnectionsList* list; | ||
|
|
||
| ASSIGN_OR_RETURN_UNWRAP(&list, args.Holder()); | ||
|
|
||
| uint32_t i = 0; | ||
| std::vector<Local<Value>> result; |
There was a problem hiding this comment.
What about using MaybeStackBuffer to avoid allocations if number of elements is not too high?
There was a problem hiding this comment.
I think v8::Array -> std::vector would make sense (to avoid C++ -> JS invocation costs) but std::vector -> MaybeStackBuffer probably would not make much difference...(and personally I prefer STL unless the home-grown alternatives makes a significant difference)
Flarna
approved these changes
Feb 3, 2023
jasnell
approved these changes
Feb 4, 2023
This was referenced Feb 5, 2023
18 tasks
joyeecheung
added
commit-queue
nodejs-github-bot
removed
the
commit-queue
|
Landed in a5ede9c |
MylesBorins
pushed a commit
that referenced
this pull request
Feb 18, 2023
Avoid using v8::Array::Set() which results in JS execution and is thus slow. Prebuild the vector in C++ land and build the JS array directly with that vector whereever possible. PR-URL: #46447 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Gerhard Stöbich <[email protected]> Reviewed-By: James M Snell <[email protected]>
Merged
danielleadams
pushed a commit
that referenced
this pull request
Apr 11, 2023
Avoid using v8::Array::Set() which results in JS execution and is thus slow. Prebuild the vector in C++ land and build the JS array directly with that vector whereever possible. PR-URL: #46447 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Gerhard Stöbich <[email protected]> Reviewed-By: James M Snell <[email protected]>
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.
Avoid using v8::Array::Set() which results in JS execution and is thus slow. Prebuild the vector in C++ land and build the JS array directly with that vector whereever possible.