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add comments about the cause of the leak

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This commit is contained in:
Evan Almloff 2023-10-26 13:23:12 -05:00
parent fca9d95519
commit eea4a02ef5
1 changed files with 6 additions and 0 deletions
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6
packages/core/src/bump_frame.rs
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@ -7,6 +7,8 @@ use std::cell::{Cell, UnsafeCell};
pub(crate) struct BumpFrame {
pub bump: UnsafeCell<Bump>,
pub node: Cell<*const RenderReturn<'static>>,
// The bump allocator will not call the destructor of the objects it allocated. Attributes and props need to have there destructor called, so we keep a list of them to drop before the bump allocator is reset.
pub(crate) attributes_to_drop_before_reset: RefCell<Vec<*const Attribute<'static>>>,
pub(crate) props_to_drop_before_reset: RefCell<Vec<*const VComponent<'static>>>,
}
@ -43,6 +45,10 @@ impl BumpFrame {
.push(attribute);
}
/// Reset the bump allocator and drop all the attributes and props that were allocated in it.
///
/// # Safety
/// The caller must insure that no reference to anything allocated in the bump allocator is available after this function is called.
pub(crate) unsafe fn reset(&self) {
let mut attributes = self.attributes_to_drop_before_reset.borrow_mut();
attributes.drain(..).for_each(|attribute| {