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LibJS: Actually invoke the type-isolating cell allocators

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Due to a `requires` mistake, we were always using the fallback
size-based cell allocators.

Also, now that we start using them, make them NeverDestroyed so
we don't try to deallocate them on program exit.
This commit is contained in:
Andreas Kling 2023-12-23 20:00:21 +01:00
parent f953a70965
commit 6c1fcc5f7e
2 changed files with 4 additions and 3 deletions
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3
Userland/Libraries/LibJS/Heap/CellAllocator.h
View file

@ -7,6 +7,7 @@
#pragma once
#include <AK/IntrusiveList.h>
#include <AK/NeverDestroyed.h>
#include <AK/NonnullOwnPtr.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/HeapBlock.h>
@ -61,7 +62,7 @@ class TypeIsolatingCellAllocator {
public:
using CellType = T;
CellAllocator allocator { sizeof(T) };
NeverDestroyed<CellAllocator> allocator { sizeof(T) };
};
}

4
Userland/Libraries/LibJS/Heap/Heap.h
View file

@ -101,9 +101,9 @@ private:
Cell* allocate_cell()
{
will_allocate(sizeof(T));
if constexpr (requires { T::cell_allocator.allocate_cell(*this); }) {
if constexpr (requires { T::cell_allocator.allocator.get().allocate_cell(*this); }) {
if constexpr (IsSame<T, typename decltype(T::cell_allocator)::CellType>) {
return T::cell_allocator.allocate_cell(*this);
return T::cell_allocator.allocator.get().allocate_cell(*this);
}
}
return allocator_for_size(sizeof(T)).allocate_cell(*this);