ladybird/Userland/Libraries/LibJS/Runtime/WeakSet.h
Andreas Kling 83bd675477 LibJS: Make WeakContainer pruning do less work
Instead of iterating *all* swept cells when pruning weak containers,
only iterate the cells actually *in* the container.

Also, instead of compiling a list of all swept cells, we can simply
check the Cell::state() flag to know if something should be pruned.
2021-10-05 18:52:00 +02:00

43 lines
940 B
C++

/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/HashTable.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/WeakContainer.h>
namespace JS {
class WeakSet final
: public Object
, public WeakContainer {
JS_OBJECT(WeakSet, Object);
public:
static WeakSet* create(GlobalObject&);
explicit WeakSet(Object& prototype);
virtual ~WeakSet() override;
HashTable<Cell*> const& values() const { return m_values; };
HashTable<Cell*>& values() { return m_values; };
virtual void remove_dead_cells(Badge<Heap>) override;
private:
#ifdef JS_TRACK_ZOMBIE_CELLS
virtual void did_become_zombie() override
{
deregister();
}
#endif
HashTable<Cell*> m_values; // This stores Cell pointers instead of Object pointers to aide with sweeping
};
}