[GR-78938] Group image heap DynamicHubCompanion, and ClassInitializationInfo and its lock synchronizers. - #14332
Open
graalvmbot wants to merge 3 commits into
Open
[GR-78938] Group image heap DynamicHubCompanion, and ClassInitializationInfo and its lock synchronizers.#14332graalvmbot wants to merge 3 commits into
graalvmbot wants to merge 3 commits into
Conversation
oracle-contributor-agreement
Bot
added
the
OCA Verified
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
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
DynamicHubCompanion objects in the image heap contain writable fields for reflection data and other values that are lazily decoded or computed at runtime. The image heap also contains a number of ClassInitializationInfo objects. For uninitialized classes, class initialization writes the object and uses a lock in the image heap that is also written (more precisely: its synchronizer is written).
Grouping objects of these types in one place can reduce dirty pages (copied on write) by around 10% for some images.