ladybird/Libraries/LibWeb/WebAssembly/Memory.h
Shannon Booth f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:

 * JS::NonnullGCPtr -> GC::Ref
 * JS::GCPtr -> GC::Ptr
 * JS::HeapFunction -> GC::Function
 * JS::CellImpl -> GC::Cell
 * JS::Handle -> GC::Root
2024-11-15 14:49:20 +01:00

50 lines
1.4 KiB
C++

/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Optional.h>
#include <LibGC/Ptr.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibWasm/AbstractMachine/AbstractMachine.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/PlatformObject.h>
namespace Web::WebAssembly {
struct MemoryDescriptor {
u32 initial { 0 };
Optional<u32> maximum;
};
class Memory : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(Memory, Bindings::PlatformObject);
GC_DECLARE_ALLOCATOR(Memory);
public:
static WebIDL::ExceptionOr<GC::Ref<Memory>> construct_impl(JS::Realm&, MemoryDescriptor& descriptor);
WebIDL::ExceptionOr<u32> grow(u32 delta);
WebIDL::ExceptionOr<GC::Ref<JS::ArrayBuffer>> buffer() const;
Wasm::MemoryAddress address() const { return m_address; }
private:
Memory(JS::Realm&, Wasm::MemoryAddress);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Visitor&) override;
WebIDL::ExceptionOr<void> reset_the_memory_buffer();
static WebIDL::ExceptionOr<GC::Ref<JS::ArrayBuffer>> create_a_memory_buffer(JS::VM&, JS::Realm&, Wasm::MemoryAddress);
Wasm::MemoryAddress m_address;
mutable GC::Ptr<JS::ArrayBuffer> m_buffer;
};
}