/* * Copyright (c) 2021-2024, Andreas Kling <andreas@ladybird.org> * * SPDX-License-Identifier: BSD-2-Clause */ #include <AK/IDAllocator.h> #include <LibWeb/DOM/Document.h> #include <LibWeb/HTML/EventLoop/Task.h> namespace Web::HTML { JS_DEFINE_ALLOCATOR(Task); static IDAllocator s_unique_task_source_allocator { static_cast<int>(Task::Source::UniqueTaskSourceStart) }; [[nodiscard]] static TaskID allocate_task_id() { static u64 next_task_id = 1; return next_task_id++; } JS::NonnullGCPtr<Task> Task::create(JS::VM& vm, Source source, JS::GCPtr<DOM::Document const> document, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps) { return vm.heap().allocate_without_realm<Task>(source, document, move(steps)); } Task::Task(Source source, JS::GCPtr<DOM::Document const> document, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps) : m_id(allocate_task_id()) , m_source(source) , m_steps(steps) , m_document(document) { } Task::~Task() = default; void Task::visit_edges(Visitor& visitor) { Base::visit_edges(visitor); visitor.visit(m_steps); visitor.visit(m_document); } void Task::execute() { m_steps->function()(); } // https://html.spec.whatwg.org/#concept-task-runnable bool Task::is_runnable() const { // A task is runnable if its document is either null or fully active. return !m_document.ptr() || m_document->is_fully_active(); } DOM::Document const* Task::document() const { return m_document.ptr(); } UniqueTaskSource::UniqueTaskSource() : source(static_cast<Task::Source>(s_unique_task_source_allocator.allocate())) { } UniqueTaskSource::~UniqueTaskSource() { s_unique_task_source_allocator.deallocate(static_cast<int>(source)); } }