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LibWeb: Add "parallel queue" and allow it as fetch task destination

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Note that it's not actually executing tasks in parallel, it's still
throwing them on the HTML event loop task queue, each with its own
unique task source.

This makes our fetch implementation a lot more robust when HTTP caching
is enabled, and you can now click links on https://terminal.shop/
without hitting TODO assertions in fetch.
This commit is contained in:
Andreas Kling
2025-07-16 12:29:26 +02:00
committed by Andreas Kling
parent 9a5ef95022
commit 03256a2543
Notes: github-actions[bot] 2025-07-16 22:14:47 +00:00 
Author: https://github.com/awesomekling
Commit: https://github.com/LadybirdBrowser/ladybird/commit/03256a2543e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5471
10 changed files with 65 additions and 44 deletions
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13
Libraries/LibWeb/HTML/EventLoop/Task.cpp
View File

@@ -77,4 +77,17 @@ UniqueTaskSource::~UniqueTaskSource()
s_unique_task_source_allocator.deallocate(static_cast<int>(source));
}
NonnullRefPtr<ParallelQueue> ParallelQueue::create()
{
return adopt_ref(*new (nothrow) ParallelQueue);
}
TaskID ParallelQueue::enqueue(GC::Ref<GC::Function<void()>> algorithm)
{
auto& event_loop = HTML::main_thread_event_loop();
auto task = HTML::Task::create(event_loop.vm(), m_task_source.source, nullptr, algorithm);
event_loop.task_queue().add(task);
return task->id();
}
}