mirror of
https://github.com/RGBCube/serenity
synced 2025-05-23 07:35:07 +00:00
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. :^)
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/*
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* Copyright (c) 2023, Matthew Olsson <mattco@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 <AK/Function.h>
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#include <AK/SinglyLinkedList.h>
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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/ReadableStreamGenericReader.h>
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namespace Web::Streams {
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struct ReadableStreamReadResult {
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JS::Value value;
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bool done;
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};
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class ReadRequest : public JS::Cell {
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JS_CELL(ReadRequest, JS::Cell);
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public:
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virtual ~ReadRequest() = default;
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virtual void on_chunk(JS::Value chunk) = 0;
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virtual void on_close() = 0;
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virtual void on_error(JS::Value error) = 0;
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};
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class ReadLoopReadRequest final : public ReadRequest {
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JS_CELL(ReadLoopReadRequest, JS::Cell);
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public:
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// successSteps, which is an algorithm accepting a byte sequence
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using SuccessSteps = JS::SafeFunction<void(ByteBuffer)>;
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// failureSteps, which is an algorithm accepting a JavaScript value
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using FailureSteps = JS::SafeFunction<void(JS::Value error)>;
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ReadLoopReadRequest(JS::VM& vm, JS::Realm& realm, ReadableStreamDefaultReader& reader, SuccessSteps success_steps, FailureSteps failure_steps);
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virtual void on_chunk(JS::Value chunk) override;
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virtual void on_close() override;
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virtual void on_error(JS::Value error) override;
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private:
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virtual void visit_edges(Visitor&) override;
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JS::VM& m_vm;
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JS::Realm& m_realm;
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ReadableStreamDefaultReader& m_reader;
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ByteBuffer m_bytes;
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SuccessSteps m_success_steps;
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FailureSteps m_failure_steps;
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};
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// https://streams.spec.whatwg.org/#readablestreamdefaultreader
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class ReadableStreamDefaultReader final
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: public Bindings::PlatformObject
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, public ReadableStreamGenericReaderMixin {
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WEB_PLATFORM_OBJECT(ReadableStreamDefaultReader, Bindings::PlatformObject);
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JS_DECLARE_ALLOCATOR(ReadableStreamDefaultReader);
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public:
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStreamDefaultReader>> construct_impl(JS::Realm&, JS::NonnullGCPtr<ReadableStream>);
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virtual ~ReadableStreamDefaultReader() override = default;
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> read();
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WebIDL::ExceptionOr<void> read_all_bytes(ReadLoopReadRequest::SuccessSteps, ReadLoopReadRequest::FailureSteps);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> read_all_bytes_deprecated();
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WebIDL::ExceptionOr<void> release_lock();
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SinglyLinkedList<JS::NonnullGCPtr<ReadRequest>>& read_requests() { return m_read_requests; }
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private:
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explicit ReadableStreamDefaultReader(JS::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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SinglyLinkedList<JS::NonnullGCPtr<ReadRequest>> m_read_requests;
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};
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}
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