intrusive_ptr_*(): specify memory_order explicitly #10297
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
More relaxed memory_order = less safety guarantees = faster execution. This is safe because std::shared_ptr does the same. See also: https://en.cppreference.com/w/cpp/atomic/memory_order "Typical use for relaxed memory ordering is incrementing counters, such as the reference counters of std::shared_ptr, since this only requires atomicity, but not ordering or synchronization (note that decrementing the std::shared_ptr counters requires acquire-release synchronization with the destructor)."
Al2Klimov
added
the
core/quality
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Outdated suggestions cannot be applied.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.
More relaxed memory_order = less safety guarantees = faster execution.
This is safe because std::shared_ptr does the same. See also: https://en.cppreference.com/w/cpp/atomic/memory_order "Typical use for relaxed memory ordering is incrementing counters, such as the reference counters of std::shared_ptr, since this only requires atomicity, but not ordering or synchronization (note that decrementing the std::shared_ptr counters requires acquire-release synchronization with the destructor)."