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https://github.com/RGBCube/serenity
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216f68c566
This was an oversight from when I converted PendingResponse and various other classes from being ref-counted to GC-allocated last minute - no one takes care to keep all of them alive. Some are on the stack, and some might be captured in another PendingResponse's JS::SafeFunction, but ultimately, we need a better solution. Since a PendingResponse is *always* the result of someone having created a Request, let's just let that keep a list of each PendingResponse that has been created for it, and visit them until they are resolved. After that, they can be GC'd with no complaints.
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
/*
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* Copyright (c) 2022, Linus Groh <linusg@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/Forward.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibJS/SafeFunction.h>
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#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
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namespace Web::Fetch::Fetching {
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// Non-standard wrapper around a possibly pending Infrastructure::Response.
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// This is needed to fit the asynchronous nature of ResourceLoader into the synchronous expectations
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// of the Fetch spec - we run 'in parallel' as a deferred_invoke(), which is still on the main thread;
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// therefore we use callbacks to run portions of the spec that require waiting for an HTTP load.
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class PendingResponse : public JS::Cell {
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JS_CELL(PendingResponse, JS::Cell);
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public:
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using Callback = JS::SafeFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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[[nodiscard]] static JS::NonnullGCPtr<PendingResponse> create(JS::VM&, JS::NonnullGCPtr<Infrastructure::Request>);
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[[nodiscard]] static JS::NonnullGCPtr<PendingResponse> create(JS::VM&, JS::NonnullGCPtr<Infrastructure::Request>, JS::NonnullGCPtr<Infrastructure::Response>);
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void when_loaded(Callback);
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void resolve(JS::NonnullGCPtr<Infrastructure::Response>);
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private:
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PendingResponse(JS::NonnullGCPtr<Infrastructure::Request>, JS::GCPtr<Infrastructure::Response> = {});
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virtual void visit_edges(JS::Cell::Visitor&) override;
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void run_callback() const;
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Callback m_callback;
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JS::NonnullGCPtr<Infrastructure::Request> m_request;
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JS::GCPtr<Infrastructure::Response> m_response;
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};
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}
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