1650744 - ImageBridgeChild::CreateImageClient will dispatch task synchronously on the ImageBridgeChild

Status: NEW

(Core :: Graphics, defect)

Description

[Jean-Yves Avenard [:jya]]

Similar to bug 1650728; the ImageBridgeChild will do a sync-dispatch to create an ImageClient

This is problematic when the calling code is also on a background taskqueue as the background threadpool is made of a single thread.

For now we could make the runnable be dispatched with the NS_DISPATCH_EVENT_MAY_BLOCK flag; however it's rather counter-intuitive as the task dispatched isn't blocking on anything; it's the callee that is waiting and blocking until that task is running.

It seems to be a better approach to remove the need for the ImageClient to be created on the ImageBridgeChild thread.

Comment 1

[Gregory Pappas [:gregp]]

Seems to still be the case
https://searchfox.org/mozilla-central/rev/213d5278e59db7e6142e2b093d3fd0172f6392a4/gfx/layers/ipc/ImageBridgeChild.cpp#657-675

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:bhood, could you have a look please?

For more information, please visit BugBot documentation.