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LibWeb/Fetch: Use JS::HeapFunction
for callback in FetchAlgorithms
In FetchAlgorithms, it is common for callbacks to capture realms. This can indirectly keep objects alive that hold FetchController with these callbacks. This creates a cyclic dependency. However, when JS::HeapFunction is used, this is not a problem, as captured by callbacks values do not create new roots.
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3 changed files with 54 additions and 41 deletions
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@ -9,6 +9,7 @@
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#include <AK/Optional.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibJS/Heap/HeapFunction.h>
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#include <LibJS/SafeFunction.h>
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#include <LibWeb/Forward.h>
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@ -22,40 +23,42 @@ public:
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struct ConsumeBodyFailureTag { };
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using BodyBytes = Variant<Empty, ConsumeBodyFailureTag, ByteBuffer>;
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using ProcessRequestBodyChunkLengthFunction = JS::SafeFunction<void(u64)>;
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using ProcessRequestEndOfBodyFunction = JS::SafeFunction<void()>;
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using ProcessEarlyHintsResponseFunction = JS::SafeFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseFunction = JS::SafeFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseEndOfBodyFunction = JS::SafeFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseConsumeBodyFunction = JS::SafeFunction<void(JS::NonnullGCPtr<Infrastructure::Response>, BodyBytes)>;
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using ProcessRequestBodyChunkLengthFunction = Function<void(u64)>;
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using ProcessRequestEndOfBodyFunction = Function<void()>;
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using ProcessEarlyHintsResponseFunction = Function<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseFunction = Function<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseEndOfBodyFunction = Function<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
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using ProcessResponseConsumeBodyFunction = Function<void(JS::NonnullGCPtr<Infrastructure::Response>, BodyBytes)>;
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struct Input {
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Optional<ProcessRequestBodyChunkLengthFunction> process_request_body_chunk_length;
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Optional<ProcessRequestEndOfBodyFunction> process_request_end_of_body;
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Optional<ProcessEarlyHintsResponseFunction> process_early_hints_response;
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Optional<ProcessResponseFunction> process_response;
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Optional<ProcessResponseEndOfBodyFunction> process_response_end_of_body;
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Optional<ProcessResponseConsumeBodyFunction> process_response_consume_body;
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ProcessRequestBodyChunkLengthFunction process_request_body_chunk_length;
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ProcessRequestEndOfBodyFunction process_request_end_of_body;
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ProcessEarlyHintsResponseFunction process_early_hints_response;
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ProcessResponseFunction process_response;
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ProcessResponseEndOfBodyFunction process_response_end_of_body;
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ProcessResponseConsumeBodyFunction process_response_consume_body;
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};
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[[nodiscard]] static JS::NonnullGCPtr<FetchAlgorithms> create(JS::VM&, Input);
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Optional<ProcessRequestBodyChunkLengthFunction> const& process_request_body_chunk_length() const { return m_process_request_body_chunk_length; }
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Optional<ProcessRequestEndOfBodyFunction> const& process_request_end_of_body() const { return m_process_request_end_of_body; }
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Optional<ProcessEarlyHintsResponseFunction> const& process_early_hints_response() const { return m_process_early_hints_response; }
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Optional<ProcessResponseFunction> const& process_response() const { return m_process_response; }
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Optional<ProcessResponseEndOfBodyFunction> const& process_response_end_of_body() const { return m_process_response_end_of_body; }
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Optional<ProcessResponseConsumeBodyFunction> const& process_response_consume_body() const { return m_process_response_consume_body; }
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ProcessRequestBodyChunkLengthFunction const& process_request_body_chunk_length() const { return m_process_request_body_chunk_length->function(); }
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ProcessRequestEndOfBodyFunction const& process_request_end_of_body() const { return m_process_request_end_of_body->function(); }
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ProcessEarlyHintsResponseFunction const& process_early_hints_response() const { return m_process_early_hints_response->function(); }
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ProcessResponseFunction const& process_response() const { return m_process_response->function(); }
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ProcessResponseEndOfBodyFunction const& process_response_end_of_body() const { return m_process_response_end_of_body->function(); }
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ProcessResponseConsumeBodyFunction const& process_response_consume_body() const { return m_process_response_consume_body->function(); }
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virtual void visit_edges(JS::Cell::Visitor&) override;
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private:
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explicit FetchAlgorithms(Input);
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explicit FetchAlgorithms(JS::VM&, Input);
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Optional<ProcessRequestBodyChunkLengthFunction> m_process_request_body_chunk_length;
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Optional<ProcessRequestEndOfBodyFunction> m_process_request_end_of_body;
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Optional<ProcessEarlyHintsResponseFunction> m_process_early_hints_response;
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Optional<ProcessResponseFunction> m_process_response;
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Optional<ProcessResponseEndOfBodyFunction> m_process_response_end_of_body;
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Optional<ProcessResponseConsumeBodyFunction> m_process_response_consume_body;
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JS::NonnullGCPtr<JS::HeapFunction<void(u64)>> m_process_request_body_chunk_length;
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JS::NonnullGCPtr<JS::HeapFunction<void()>> m_process_request_end_of_body;
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JS::NonnullGCPtr<JS::HeapFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>> m_process_early_hints_response;
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JS::NonnullGCPtr<JS::HeapFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>> m_process_response;
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JS::NonnullGCPtr<JS::HeapFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>> m_process_response_end_of_body;
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JS::NonnullGCPtr<JS::HeapFunction<void(JS::NonnullGCPtr<Infrastructure::Response>, BodyBytes)>> m_process_response_consume_body;
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};
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}
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