5dd5896588
This is a continuation of the previous commit. Calling initialize() is the first thing that's done after allocating a cell on the JS heap - and in the common case of allocating an object, that's where properties are assigned and intrinsics occasionally accessed. Since those are supposed to live on the realm eventually, this is another step into that direction.
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@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 <LibJS/Runtime/Object.h>
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.h>
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namespace Web::Bindings {
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class WebAssemblyMemoryObject;
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JS::ThrowCompletionOr<size_t> parse_module(JS::GlobalObject& global_object, JS::Object* buffer);
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JS::NativeFunction* create_native_function(JS::GlobalObject& global_object, Wasm::FunctionAddress address, String const& name);
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JS::Value to_js_value(JS::GlobalObject& global_object, Wasm::Value& wasm_value);
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JS::ThrowCompletionOr<Wasm::Value> to_webassembly_value(JS::GlobalObject& global_object, JS::Value value, Wasm::ValueType const& type);
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class WebAssemblyObject final : public JS::Object {
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JS_OBJECT(WebAssemblyObject, JS::Object);
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public:
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explicit WebAssemblyObject(JS::Realm&);
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virtual void initialize(JS::Realm&) override;
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virtual ~WebAssemblyObject() override = default;
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virtual void visit_edges(Cell::Visitor&) override;
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static JS::ThrowCompletionOr<size_t> instantiate_module(Wasm::Module const&, JS::VM&, JS::GlobalObject&);
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struct CompiledWebAssemblyModule {
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explicit CompiledWebAssemblyModule(Wasm::Module&& module)
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: module(move(module))
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{
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}
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Wasm::Module module;
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};
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// FIXME: These should just be members of the module (instance) object,
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// but the module needs to stick around while its instance is alive
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// so ideally this would be a refcounted object, shared between
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// WebAssemblyModuleObject's and WebAssemblyInstantiatedModuleObject's.
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struct ModuleCache {
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HashMap<Wasm::FunctionAddress, JS::FunctionObject*> function_instances;
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HashMap<Wasm::MemoryAddress, WebAssemblyMemoryObject*> memory_instances;
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};
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struct GlobalModuleCache {
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HashMap<Wasm::FunctionAddress, JS::NativeFunction*> function_instances;
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};
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static NonnullOwnPtrVector<CompiledWebAssemblyModule> s_compiled_modules;
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static NonnullOwnPtrVector<Wasm::ModuleInstance> s_instantiated_modules;
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static Vector<ModuleCache> s_module_caches;
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static GlobalModuleCache s_global_cache;
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static Wasm::AbstractMachine s_abstract_machine;
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private:
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JS_DECLARE_NATIVE_FUNCTION(validate);
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JS_DECLARE_NATIVE_FUNCTION(compile);
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JS_DECLARE_NATIVE_FUNCTION(instantiate);
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};
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class WebAssemblyMemoryObject final : public JS::Object {
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JS_OBJECT(WebAssemblyMemoryObject, JS::Object);
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public:
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WebAssemblyMemoryObject(JS::Realm&, Wasm::MemoryAddress);
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virtual ~WebAssemblyMemoryObject() override = default;
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auto address() const { return m_address; }
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private:
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Wasm::MemoryAddress m_address;
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};
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}
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