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Fix rooting of external array buffer pointer (#31342)

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Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>
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Taym Haddadi 2024-02-14 03:34:05 +01:00 • committed by GitHub
parent b2d2e896d6
commit a4db81cbd0
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1 changed files with 5 additions and 3 deletions
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8
components/script/dom/bindings/typedarrays.rs
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@ -183,16 +183,18 @@ where
let mapping_slice_ptr = let mapping_slice_ptr =
mapping.lock().unwrap().borrow_mut()[offset as usize..m_end as usize].as_mut_ptr(); mapping.lock().unwrap().borrow_mut()[offset as usize..m_end as usize].as_mut_ptr();
let array_buffer = NewExternalArrayBuffer( // rooted! is needed to ensure memory safety and prevent potential garbage collection issues.
// https://github.com/mozilla-spidermonkey/spidermonkey-embedding-examples/blob/esr78/docs/GC%20Rooting%20Guide.md#performance-tweaking
rooted!(in(*cx) let array_buffer = NewExternalArrayBuffer(
*cx, *cx,
range_size as usize, range_size as usize,
mapping_slice_ptr as _, mapping_slice_ptr as _,
Some(free_func), Some(free_func),
Arc::into_raw(mapping) as _, Arc::into_raw(mapping) as _,
); ));
HeapTypedArray { HeapTypedArray {
internal: Heap::boxed(array_buffer), internal: Heap::boxed(*array_buffer),
phantom: PhantomData::default(), phantom: PhantomData::default(),
} }
} }