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bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
/*
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* Copyright (c) 2023, Kenneth Myhra <kennethmyhra@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 <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Streams/QueuingStrategy.h>
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#include <LibWeb/WebIDL/Promise.h>
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namespace Web::Streams {
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class TransformStream final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(TransformStream, Bindings::PlatformObject);
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JS_DECLARE_ALLOCATOR(TransformStream);
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public:
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virtual ~TransformStream() override;
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<TransformStream>> construct_impl(JS::Realm&, Optional<JS::Handle<JS::Object>> transformer_object = {}, QueuingStrategy const& writable_strategy = {}, QueuingStrategy const& readable_strategy = {});
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// https://streams.spec.whatwg.org/#ts-readable
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JS::NonnullGCPtr<ReadableStream> readable() { return *m_readable; }
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void set_readable(ReadableStream& readable) { m_readable = readable; }
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// https://streams.spec.whatwg.org/#ts-writable
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JS::NonnullGCPtr<WritableStream> writable() { return *m_writable; }
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void set_writable(WritableStream& writable) { m_writable = writable; }
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Optional<bool> backpressure() const { return m_backpressure; }
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void set_backpressure(Optional<bool> value) { m_backpressure = move(value); }
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JS::GCPtr<WebIDL::Promise> backpressure_change_promise() const { return m_backpressure_change_promise; }
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void set_backpressure_change_promise(JS::GCPtr<WebIDL::Promise> value) { m_backpressure_change_promise = value; }
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JS::GCPtr<TransformStreamDefaultController> controller() const { return m_controller; }
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void set_controller(JS::GCPtr<TransformStreamDefaultController> value) { m_controller = value; }
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private:
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explicit TransformStream(JS::Realm& realm);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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// https://streams.spec.whatwg.org/#transformstream-backpressure
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// Whether there was backpressure on [[readable]] the last time it was observed
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Optional<bool> m_backpressure { false };
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// https://streams.spec.whatwg.org/#transformstream-backpressurechangepromise
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// A promise which is fulfilled and replaced every time the value of [[backpressure]] changes
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JS::GCPtr<WebIDL::Promise> m_backpressure_change_promise;
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// https://streams.spec.whatwg.org/#transformstream-controller
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// A TransformStreamDefaultController created with the ability to control [[readable]] and [[writable]]
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JS::GCPtr<TransformStreamDefaultController> m_controller;
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// https://streams.spec.whatwg.org/#transformstream-detached
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// A boolean flag set to true when the stream is transferred
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bool m_detached { false };
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// https://streams.spec.whatwg.org/#transformstream-readable
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// The ReadableStream instance controlled by this object
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JS::GCPtr<ReadableStream> m_readable;
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// https://streams.spec.whatwg.org/#transformstream-writable
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// The WritableStream instance controlled by this object
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JS::GCPtr<WritableStream> m_writable;
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};
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}
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