Safer wrapping for FFI clients. #2906
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nihohit
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jonathanl-bq
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Jan 4, 2025
jonathanl-bq
reviewed
Jan 4, 2025
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@Yury-Fridlyand @jonathanl-bq does this require more changes? |
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I'm still lacking rust knowledge to assess. Summoning @ikolomi to give a bless. |
jonathanl-bq
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Jan 21, 2025
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the test failures in go integration tests (but not in unit tests) mean there's a chance that the clients are being released while still in usage. |
@nihohit Can you open an issue describing it, and we will assign someone? |
Use `Arc` instead of `Box` to wrap the `ClientAdapter`, so that the lifetime of the adapter will be extended even in cases where the client is closed during commands. This also saves on using `as usize` conversions to the pointer, which cause provenance to be lost and might lead to undefined behavior. Signed-off-by: Shachar Langbeheim <[email protected]>
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@avifenesh done |
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Use
Arcinstead ofBoxto wrap theClientAdapter, so that the lifetime of the adapter will be extended even in cases where the client is closed during commands. This also saves on usingas usizeconversions to the pointer, which cause provenance to be lost and might lead to undefined behavior.The memory cost of this change is increasing the allocation of the client by one pointer size, and the runtime cost is 4 atomic increments/decrements per command.
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