mirror of
https://github.com/RGBCube/serenity
synced 2025-05-22 15:45:08 +00:00
bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*
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* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Forward.h>
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#include <AK/HashMap.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibWeb/Bindings/HostDefined.h>
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namespace Web::Bindings {
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class Intrinsics final : public JS::Cell {
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JS_CELL(Intrinsics, JS::Cell);
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JS_DECLARE_ALLOCATOR(Intrinsics);
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public:
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Intrinsics(JS::Realm& realm)
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: m_realm(realm)
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{
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}
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template<typename NamespaceType>
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JS::Object& ensure_web_namespace(DeprecatedString const& namespace_name)
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{
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if (auto it = m_namespaces.find(namespace_name); it != m_namespaces.end())
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return *it->value;
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create_web_namespace<NamespaceType>(*m_realm);
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return *m_namespaces.find(namespace_name)->value;
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}
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template<typename PrototypeType>
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JS::Object& ensure_web_prototype(DeprecatedString const& class_name)
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{
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if (auto it = m_prototypes.find(class_name); it != m_prototypes.end())
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return *it->value;
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create_web_prototype_and_constructor<PrototypeType>(*m_realm);
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return *m_prototypes.find(class_name)->value;
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}
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template<typename PrototypeType>
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JS::NativeFunction& ensure_web_constructor(DeprecatedString const& class_name)
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{
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if (auto it = m_constructors.find(class_name); it != m_constructors.end())
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return *it->value;
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create_web_prototype_and_constructor<PrototypeType>(*m_realm);
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return *m_constructors.find(class_name)->value;
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}
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private:
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virtual void visit_edges(JS::Cell::Visitor&) override;
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template<typename NamespaceType>
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void create_web_namespace(JS::Realm& realm);
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template<typename PrototypeType>
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void create_web_prototype_and_constructor(JS::Realm& realm);
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HashMap<DeprecatedString, JS::NonnullGCPtr<JS::Object>> m_namespaces;
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HashMap<DeprecatedString, JS::NonnullGCPtr<JS::Object>> m_prototypes;
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HashMap<DeprecatedString, JS::GCPtr<JS::NativeFunction>> m_constructors;
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JS::NonnullGCPtr<JS::Realm> m_realm;
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};
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[[nodiscard]] inline Intrinsics& host_defined_intrinsics(JS::Realm& realm)
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{
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return *verify_cast<HostDefined>(realm.host_defined())->intrinsics;
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}
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template<typename T>
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[[nodiscard]] JS::Object& ensure_web_namespace(JS::Realm& realm, DeprecatedString const& namespace_name)
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{
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return host_defined_intrinsics(realm).ensure_web_namespace<T>(namespace_name);
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}
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template<typename T>
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[[nodiscard]] JS::Object& ensure_web_prototype(JS::Realm& realm, DeprecatedString const& class_name)
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{
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return host_defined_intrinsics(realm).ensure_web_prototype<T>(class_name);
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}
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template<typename T>
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[[nodiscard]] JS::NativeFunction& ensure_web_constructor(JS::Realm& realm, DeprecatedString const& class_name)
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{
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return host_defined_intrinsics(realm).ensure_web_constructor<T>(class_name);
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}
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}
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