commit 90c3b90d0d0f5983d7a80bee74aa835656df1340
author François Doray <fdoray@chromium.org> Thu Jan 30 00:59:10 2025
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Thu Jan 30 00:59:10 2025
tree 1a82bc256e0cde5bb72c82f7c2349e9c052ba51f
parent c86140a08bd922b2eb33c48325c2fe0ba9855733

[blink] Remove cancelled scheduler idle tasks when many are accumulated.

With this CL, ScriptedIdleTaskController counts its outstanding
scheduler idle tasks. When many more than the number of
"non-cancelled" IdleTasks are accumulated, it invokes a new
method on ThreadScheduler which traverses the queues of idle tasks
and remove those that are cancelled. The impact is that this code does
not cause an Out of Memory (OOM) crash anymore:

  let noop = () => {}

  let postAndCancel = () => {
   let id = window.requestIdleCallback(noop);
    window.cancelIdleCallback(id);
    scheduler.postTask(postAndCancel);
  }

  postAndCancel();


Bug: 365114039
Change-Id: Id44b773bb54a2bd70a467ebef54142f6dc7c5b42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6205406
Reviewed-by: Etienne Pierre-Doray <etiennep@chromium.org>
Auto-Submit: Francois Pierre Doray <fdoray@chromium.org>
Commit-Queue: Francois Pierre Doray <fdoray@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1413248}