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Automatic memory management of blocks #573

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madsmtm opened this issue Feb 2, 2024 · 0 comments
Open

Automatic memory management of blocks #573

madsmtm opened this issue Feb 2, 2024 · 0 comments
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A-block2 Affects the `block2` crate A-objc2 Affects the `objc2`, `objc2-exception-helper` and/or `objc2-encode` crates enhancement New feature or request

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@madsmtm
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madsmtm commented Feb 2, 2024

It would be nice if we could get automatic memory management for blocks as well, instead of having to specify returned blocks as *mut Block<dyn Fn()>, and then converting those with RcBlock::copy.

If I'm reading the ARC spec right, it seems like blocks are actually autoreleased according to (mostly) the same rules as other Objective-C objects, and that we need to use objc_retainAutoreleasedReturnValue to access returned block pointers?

A few examples of more complex memory-management:

Also, should blocks be allowed in Id?

@madsmtm madsmtm added enhancement New feature or request A-objc2 Affects the `objc2`, `objc2-exception-helper` and/or `objc2-encode` crates A-block2 Affects the `block2` crate labels Feb 2, 2024
@madsmtm madsmtm mentioned this issue Feb 2, 2024
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Labels
A-block2 Affects the `block2` crate A-objc2 Affects the `objc2`, `objc2-exception-helper` and/or `objc2-encode` crates enhancement New feature or request
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