[Runtime] Fix memory ordering and TSan compatibility in MetadataAllocator. #80021
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…ator. We need a store-release when putting a new page onto the metadata allocator so that other threads see the initialization. We also need to tell TSan about our memory barriers here, to avoid false positives in __swift_instantiateConcreteTypeFromMangledName when it reads from memory allocated here. rdar://145778813
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@swift-ci please test |
al45tair
approved these changes
Mar 17, 2025
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We need a store-release when putting a new page onto the metadata allocator so that other threads see the initialization. We also need to tell TSan about our memory barriers here, to avoid false positives in __swift_instantiateConcreteTypeFromMangledName when it reads from memory allocated here.
rdar://145778813