Refactored image cache task - details below.

* Simpler image cache API for clients to use.
 * Significantly fewer threads.
   * One thread for image cache task (multiplexes commands, decoder threads and async resource requests).
   * 4 threads for decoder worker tasks.
 * Removed ReflowEvent hacks in script and layout tasks.
   * Image elements pass a Trusted<T> to image cache, which is used to dirty nodes via script task. Previous use of Untrusted addresses was unsafe.
   * Image requests such as background-image on layout / paint threads trigger repaint only rather than full reflow.
 * Add reflow batching for when multiple images load quickly.
   * Reduces the number of paints loading wikipedia from ~95 to ~35.
 * Reasonably simple to add proper prefetch support in a follow up PR.
 * Async loaded images always construct Image fragments now, instead of generic.
   * Image fragments support the image not being present.
 * Simpler implementation of synchronous image loading for reftests.
 * Removed image holder.
 * image.onload support.
 * image NaturalWidth and NaturalHeight support.
 * Updated WPT expectations.
This commit is contained in:
Glenn Watson 2015-04-20 13:34:26 +10:00
parent e278e5b9a2
commit d8aef7208e
33 changed files with 2785 additions and 1679 deletions

View file

@ -6,7 +6,6 @@
#![feature(collections)]
#![feature(core)]
#![feature(rustc_private)]
#![feature(std_misc)]
extern crate geom;
extern crate hyper;
@ -28,7 +27,6 @@ use std::borrow::IntoCow;
use std::sync::mpsc::{channel, Receiver, Sender};
pub mod image_cache_task;
pub mod local_image_cache;
pub mod storage_task;
/// Image handling.
@ -38,7 +36,6 @@ pub mod storage_task;
/// caching is involved) and as a result it must live in here.
pub mod image {
pub mod base;
pub mod holder;
}
#[derive(Clone)]