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https://github.com/LadybirdBrowser/ladybird.git
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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. :^)
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
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* Copyright (c) 2023, Tim Flynn <trflynn89@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/Optional.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibJS/Runtime/ArrayBuffer.h>
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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#include <LibWeb/Bindings/ExceptionOrUtils.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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namespace Web::WebAssembly {
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struct MemoryDescriptor {
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u32 initial { 0 };
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Optional<u32> maximum;
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};
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class Memory : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(Memory, Bindings::PlatformObject);
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JS_DECLARE_ALLOCATOR(Memory);
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public:
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<Memory>> construct_impl(JS::Realm&, MemoryDescriptor& descriptor);
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WebIDL::ExceptionOr<u32> grow(u32 delta);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::ArrayBuffer>> buffer() const;
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Wasm::MemoryAddress address() const { return m_address; }
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private:
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Memory(JS::Realm&, Wasm::MemoryAddress);
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virtual void initialize(JS::Realm&) override;
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WebIDL::ExceptionOr<void> reset_the_memory_buffer();
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::ArrayBuffer>> create_a_memory_buffer(JS::VM&, JS::Realm&, Wasm::MemoryAddress);
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Wasm::MemoryAddress m_address;
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mutable JS::GCPtr<JS::ArrayBuffer> m_buffer;
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};
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}
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