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LibJS: Notify WeakSets when heap cells are sweeped

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This is an implementation of the following optional optimization:
https://tc39.es/ecma262/#sec-weakref-execution
This commit is contained in:
Idan Horowitz 2021-06-09 20:10:47 +03:00 • committed by Linus Groh
parent fb63aeae4d
commit a00d154522
7 changed files with 62 additions and 3 deletions
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5
Userland/Libraries/LibJS/Heap/Heap.h
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@ -70,6 +70,9 @@ public:
void did_create_marked_value_list(Badge<MarkedValueList>, MarkedValueList&);
void did_destroy_marked_value_list(Badge<MarkedValueList>, MarkedValueList&);
void did_create_weak_set(Badge<WeakSet>, WeakSet&);
void did_destroy_weak_set(Badge<WeakSet>, WeakSet&);
void defer_gc(Badge<DeferGC>);
void undefer_gc(Badge<DeferGC>);
@ -106,6 +109,8 @@ private:
HashTable<MarkedValueList*> m_marked_value_lists;
HashTable<WeakSet*> m_weak_sets;
BlockAllocator m_block_allocator;
size_t m_gc_deferrals { 0 };