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script: Move TaskManager to GlobalScope (#34827)

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This is a simplification of the internal `TaskQueue` API that moves the
`TaskManager` to the `GlobalScope` itself. In addition, the handling of
cancellers is moved to the `TaskManager` as well. This means that no
arguments other than the `task` are necessary for queueing tasks, which
makes the API a lot easier to use and cleaner.

`TaskSource` now also keeps a copy of the canceller with it, so that
they always know the proper way to cancel any tasks queued on them.

There is one complication here. The event loop `sender` for dedicated
workers is constantly changing as it is set to `None` when not handling
messages. This is because this sender keeps a handle to the main
thread's `Worker` object, preventing garbage collection while any
messages are still in flight or being handled. This change allows
setting the `sender` on the `TaskManager` to `None` to allow proper
garbabge collection.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-01-04 09:41:50 +01:00 • committed by GitHub
parent 75a22cfe2e
commit b2eda71952
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54 changed files with 1060 additions and 1516 deletions
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13
components/script/dom/webgpu/gpu.rs
View file

@ -25,7 +25,6 @@ use crate::dom::promise::Promise;
use crate::dom::webgpu::gpuadapter::GPUAdapter;
use crate::realms::InRealm;
use crate::script_runtime::CanGc;
use crate::task_source::TaskSourceName;
#[dom_struct]
#[allow(clippy::upper_case_acronyms)]
@ -73,9 +72,6 @@ pub fn response_async<T: AsyncWGPUListener + DomObject + 'static>(
.global()
.task_manager()
.dom_manipulation_task_source();
let canceller = receiver
.global()
.task_canceller(TaskSourceName::DOMManipulation);
let mut trusted: Option<TrustedPromise> = Some(TrustedPromise::new(promise.clone()));
let trusted_receiver = Trusted::new(receiver);
ROUTER.add_typed_route(
@ -92,12 +88,9 @@ pub fn response_async<T: AsyncWGPUListener + DomObject + 'static>(
trusted,
receiver: trusted_receiver.clone(),
};
let result = task_source.queue_with_canceller(
task!(process_webgpu_task: move|| {
context.response(message.unwrap(), CanGc::note());
}),
&canceller,
);
let result = task_source.queue(task!(process_webgpu_task: move|| {
context.response(message.unwrap(), CanGc::note());
}));
if let Err(err) = result {
error!("Failed to queue GPU listener-task: {:?}", err);
}