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748954d610
Instead of creating an IPC channel for every fetch, allow cancelling fetches based on the `RequestId` of the original request. This requires that `RequestId`s be UUIDs so that they are unique between processes that might communicating with the resource process. In addition, the resource process loop now keeps a `HashMap` or `Weak` handles to cancellers and cleans them up. This allows for creating mutiple `FetchCanceller`s in `script` for a single fetch request, allowing integration of the media and video elements to integrate with the `Document` canceller list -- meaning these fetches also get cancelled when the `Document` unloads. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
116 lines
3.7 KiB
Rust
116 lines
3.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Infrastructure to initiate network requests for images needed by layout. The script thread needs
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//! to be responsible for them because there's no guarantee that the responsible nodes will still
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//! exist in the future if layout holds on to them during asynchronous operations.
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use std::sync::Arc;
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use net_traits::image_cache::{ImageCache, PendingImageId};
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use net_traits::request::{Destination, RequestBuilder as FetchRequestInit, RequestId};
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use net_traits::{
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FetchMetadata, FetchResponseListener, FetchResponseMsg, NetworkError, ResourceFetchTiming,
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ResourceTimingType,
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};
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use servo_url::ServoUrl;
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use crate::dom::bindings::refcounted::Trusted;
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use crate::dom::bindings::reflector::DomObject;
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::document::Document;
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use crate::dom::globalscope::GlobalScope;
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use crate::dom::node::{Node, NodeTraits};
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use crate::dom::performanceresourcetiming::InitiatorType;
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use crate::network_listener::{self, PreInvoke, ResourceTimingListener};
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use crate::script_runtime::CanGc;
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struct LayoutImageContext {
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id: PendingImageId,
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cache: Arc<dyn ImageCache>,
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resource_timing: ResourceFetchTiming,
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doc: Trusted<Document>,
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url: ServoUrl,
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}
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impl FetchResponseListener for LayoutImageContext {
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fn process_request_body(&mut self, _: RequestId) {}
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fn process_request_eof(&mut self, _: RequestId) {}
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fn process_response(
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&mut self,
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request_id: RequestId,
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metadata: Result<FetchMetadata, NetworkError>,
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) {
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self.cache.notify_pending_response(
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self.id,
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FetchResponseMsg::ProcessResponse(request_id, metadata),
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);
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}
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fn process_response_chunk(&mut self, request_id: RequestId, payload: Vec<u8>) {
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self.cache.notify_pending_response(
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self.id,
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FetchResponseMsg::ProcessResponseChunk(request_id, payload),
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);
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}
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fn process_response_eof(
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&mut self,
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request_id: RequestId,
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response: Result<ResourceFetchTiming, NetworkError>,
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) {
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self.cache.notify_pending_response(
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self.id,
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FetchResponseMsg::ProcessResponseEOF(request_id, response),
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);
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}
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fn resource_timing_mut(&mut self) -> &mut ResourceFetchTiming {
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&mut self.resource_timing
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}
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fn resource_timing(&self) -> &ResourceFetchTiming {
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&self.resource_timing
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}
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fn submit_resource_timing(&mut self) {
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network_listener::submit_timing(self, CanGc::note())
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}
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}
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impl ResourceTimingListener for LayoutImageContext {
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fn resource_timing_information(&self) -> (InitiatorType, ServoUrl) {
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(InitiatorType::Other, self.url.clone())
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}
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fn resource_timing_global(&self) -> DomRoot<GlobalScope> {
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self.doc.root().global()
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}
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}
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impl PreInvoke for LayoutImageContext {}
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pub(crate) fn fetch_image_for_layout(
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url: ServoUrl,
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node: &Node,
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id: PendingImageId,
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cache: Arc<dyn ImageCache>,
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) {
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let document = node.owner_document();
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let context = LayoutImageContext {
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id,
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cache,
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resource_timing: ResourceFetchTiming::new(ResourceTimingType::Resource),
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doc: Trusted::new(&document),
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url: url.clone(),
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};
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let request = FetchRequestInit::new(url, document.global().get_referrer())
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.origin(document.origin().immutable().clone())
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.destination(Destination::Image)
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.pipeline_id(Some(document.global().pipeline_id()));
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// Layout image loads do not delay the document load event.
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document.fetch_background(request, context);
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}
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