Files
ladybird/Libraries/LibJS/Bytecode/PropertyKeyTable.h
Andreas Kling 6751d348a7 LibJS: Account executable storage as external memory
Report outline storage retained by bytecode executables, table
objects, object property iterator cache data, and shared function
instance data. This includes bytecode vectors, cache arrays, source
maps, class blueprint elements, and binding metadata.
2026-05-07 10:03:09 +02:00

64 lines
1.7 KiB
C++

/*
* Copyright (c) 2025, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/DistinctNumeric.h>
#include <AK/Vector.h>
#include <LibJS/Runtime/ExternalMemory.h>
#include <LibJS/Runtime/PropertyKey.h>
namespace JS::Bytecode {
struct PropertyKeyTableIndex {
static constexpr u32 invalid = 0xffffffffu;
bool is_valid() const { return value != invalid; }
u32 value { 0 };
};
class PropertyKeyTable {
AK_MAKE_NONMOVABLE(PropertyKeyTable);
AK_MAKE_NONCOPYABLE(PropertyKeyTable);
public:
PropertyKeyTable() = default;
PropertyKeyTableIndex insert(PropertyKey);
PropertyKey const& get(PropertyKeyTableIndex) const;
void dump() const;
bool is_empty() const { return m_property_keys.is_empty(); }
size_t external_memory_size() const { return vector_external_memory_size(m_property_keys); }
ReadonlySpan<PropertyKey const> property_keys() const { return m_property_keys; }
void visit_edges(GC::Cell::Visitor& visitor)
{
for (auto& key : m_property_keys)
key.visit_edges(visitor);
}
private:
Vector<PropertyKey> m_property_keys;
};
}
namespace AK {
template<>
struct SentinelOptionalTraits<JS::Bytecode::PropertyKeyTableIndex> {
static constexpr JS::Bytecode::PropertyKeyTableIndex sentinel_value() { return { JS::Bytecode::PropertyKeyTableIndex::invalid }; }
static constexpr bool is_sentinel(JS::Bytecode::PropertyKeyTableIndex const& value) { return !value.is_valid(); }
};
template<>
class Optional<JS::Bytecode::PropertyKeyTableIndex> : public SentinelOptional<JS::Bytecode::PropertyKeyTableIndex> {
public:
using SentinelOptional::SentinelOptional;
};
}