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LibWeb: Make HTML::DecodedImageData to be GC-allocated

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This change fixes GC-leak caused by following mutual dependency:
- SVGDecodedImageData owns JS::Handle for Page.
- SVGDecodedImageData is owned by visited objects.
by making everything inherited from HTML::DecodedImageData and
ListOfAvailableImages to be GC-allocated.

Generally, if visited object has a handle, very likely we leak
everything visited from object in a handle.
This commit is contained in:
Aliaksandr Kalenik
2023-12-12 20:07:19 +01:00
committed by Andreas Kling
parent 57a04c536c
commit 41a3c19cfe
Notes: sideshowbarker 2024-07-17 07:06:47 +09:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/SerenityOS/serenity/commit/41a3c19cfe
Pull-request: https://github.com/SerenityOS/serenity/pull/22267
Reviewed-by: https://github.com/shannonbooth ✅
18 changed files with 100 additions and 54 deletions
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4
Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp
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@@ -715,7 +715,7 @@ void HTMLImageElement::react_to_changes_in_the_environment()
// FIXME: 13. End the synchronous section, continuing the remaining steps in parallel.
auto step_15 = [this](String const& selected_source, JS::NonnullGCPtr<ImageRequest> image_request, ListOfAvailableImages::Key const& key, NonnullRefPtr<DecodedImageData> const& image_data) {
auto step_15 = [this](String const& selected_source, JS::NonnullGCPtr<ImageRequest> image_request, ListOfAvailableImages::Key const& key, JS::NonnullGCPtr<DecodedImageData> image_data) {
// 15. Queue an element task on the DOM manipulation task source given the img element and the following steps:
queue_an_element_task(HTML::Task::Source::DOMManipulation, [this, selected_source, image_request, key, image_data] {
// 1. FIXME: If the img element has experienced relevant mutations since this algorithm started, then let pending request be null and abort these steps.
@@ -789,7 +789,7 @@ void HTMLImageElement::react_to_changes_in_the_environment()
VERIFY(image_request->shared_image_request());
auto image_data = image_request->shared_image_request()->image_data();
image_request->set_image_data(image_data);
step_15(selected_source, image_request, key, NonnullRefPtr(*image_data));
step_15(selected_source, image_request, key, *image_data);
});
},
[this]() {