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Implemented paint worklet properties.

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This commit is contained in:
Alan Jeffrey 2017-06-14 18:14:54 -05:00
parent de331c6bc8
commit ef033b8362
29 changed files with 353 additions and 118 deletions
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46
components/script/dom/cssstylevalue.rs Normal file
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@ -0,0 +1,46 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::codegen::Bindings::CSSStyleValueBinding::CSSStyleValueMethods;
use dom::bindings::codegen::Bindings::CSSStyleValueBinding::Wrap;
use dom::bindings::js::Root;
use dom::bindings::reflector::Reflector;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::str::DOMString;
use dom::globalscope::GlobalScope;
use dom_struct::dom_struct;
#[dom_struct]
pub struct CSSStyleValue {
reflector: Reflector,
value: String,
}
impl CSSStyleValue {
fn new_inherited(value: String) -> CSSStyleValue {
CSSStyleValue {
reflector: Reflector::new(),
value: value,
}
}
pub fn new(global: &GlobalScope, value: String) -> Root<CSSStyleValue> {
reflect_dom_object(box CSSStyleValue::new_inherited(value), global, Wrap)
}
}
impl CSSStyleValueMethods for CSSStyleValue {
/// https://drafts.css-houdini.org/css-typed-om-1/#CSSStyleValue-stringification-behavior
fn Stringifier(&self) -> DOMString {
DOMString::from(&*self.value)
}
/// This attribute is no longer part of the `CSSStyleValue` interface,
/// but is still used in some examples.
/// https://github.com/GoogleChrome/houdini-samples/issues/16
// check-tidy: no specs after this line
fn CssText(&self) -> DOMString {
self.Stringifier()
}
}

2
components/script/dom/mod.rs
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@ -253,6 +253,7 @@ pub mod cssrulelist;
pub mod cssstyledeclaration;
pub mod cssstylerule;
pub mod cssstylesheet;
pub mod cssstylevalue;
pub mod csssupportsrule;
pub mod cssviewportrule;
pub mod customelementregistry;
@ -418,6 +419,7 @@ pub mod serviceworkerregistration;
pub mod servoparser;
pub mod storage;
pub mod storageevent;
pub mod stylepropertymapreadonly;
pub mod stylesheet;
pub mod stylesheetlist;
pub mod svgelement;

72
components/script/dom/paintworkletglobalscope.rs
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@ -10,19 +10,22 @@ use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::PaintWorkletGlobalScopeBinding;
use dom::bindings::codegen::Bindings::PaintWorkletGlobalScopeBinding::PaintWorkletGlobalScopeMethods;
use dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
use dom::bindings::conversions::StringificationBehavior;
use dom::bindings::conversions::get_property;
use dom::bindings::conversions::get_property_jsval;
use dom::bindings::error::Error;
use dom::bindings::error::Fallible;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::JS;
use dom::bindings::js::Root;
use dom::bindings::reflector::DomObject;
use dom::bindings::str::DOMString;
use dom::paintrenderingcontext2d::PaintRenderingContext2D;
use dom::paintsize::PaintSize;
use dom::stylepropertymapreadonly::StylePropertyMapReadOnly;
use dom::worklet::WorkletExecutor;
use dom::workletglobalscope::WorkletGlobalScope;
use dom::workletglobalscope::WorkletGlobalScopeInit;
use dom::workletglobalscope::WorkletTask;
use dom_struct::dom_struct;
use euclid::Size2D;
use ipc_channel::ipc::IpcSender;
@ -45,6 +48,8 @@ use msg::constellation_msg::PipelineId;
use net_traits::image::base::Image;
use net_traits::image::base::PixelFormat;
use net_traits::image_cache::ImageCache;
use script_layout_interface::message::Msg;
use script_traits::Painter;
use servo_atoms::Atom;
use servo_url::ServoUrl;
use std::cell::Cell;
@ -53,6 +58,7 @@ use std::collections::hash_map::Entry;
use std::ptr::null_mut;
use std::rc::Rc;
use std::sync::Arc;
use std::sync::Mutex;
/// https://drafts.css-houdini.org/css-paint-api/#paintworkletglobalscope
#[dom_struct]
@ -73,11 +79,12 @@ impl PaintWorkletGlobalScope {
pub fn new(runtime: &Runtime,
pipeline_id: PipelineId,
base_url: ServoUrl,
executor: WorkletExecutor,
init: &WorkletGlobalScopeInit)
-> Root<PaintWorkletGlobalScope> {
debug!("Creating paint worklet global scope for pipeline {}.", pipeline_id);
let global = box PaintWorkletGlobalScope {
worklet_global: WorkletGlobalScope::new_inherited(pipeline_id, base_url, init),
worklet_global: WorkletGlobalScope::new_inherited(pipeline_id, base_url, executor, init),
image_cache: init.image_cache.clone(),
paint_definitions: Default::default(),
paint_class_instances: Default::default(),
@ -87,7 +94,10 @@ impl PaintWorkletGlobalScope {
pub fn perform_a_worklet_task(&self, task: PaintWorkletTask) {
match task {
PaintWorkletTask::DrawAPaintImage(name, size, sender) => self.draw_a_paint_image(name, size, sender),
PaintWorkletTask::DrawAPaintImage(name, size, properties, sender) => {
let properties = StylePropertyMapReadOnly::from_iter(self.upcast(), properties);
self.draw_a_paint_image(name, size, &*properties, sender);
}
}
}
@ -95,10 +105,11 @@ impl PaintWorkletGlobalScope {
fn draw_a_paint_image(&self,
name: Atom,
size: Size2D<Au>,
properties: &StylePropertyMapReadOnly,
sender: IpcSender<CanvasData>)
{
// TODO: document paint definitions.
self.invoke_a_paint_callback(name, size, sender);
self.invoke_a_paint_callback(name, size, properties, sender);
}
/// https://drafts.css-houdini.org/css-paint-api/#invoke-a-paint-callback
@ -106,6 +117,7 @@ impl PaintWorkletGlobalScope {
fn invoke_a_paint_callback(&self,
name: Atom,
size: Size2D<Au>,
properties: &StylePropertyMapReadOnly,
sender: IpcSender<CanvasData>)
{
let width = size.width.to_px().abs() as u32;
@ -179,8 +191,10 @@ impl PaintWorkletGlobalScope {
let args_slice = [
ObjectValue(rendering_context.reflector().get_jsobject().get()),
ObjectValue(paint_size.reflector().get_jsobject().get()),
ObjectValue(properties.reflector().get_jsobject().get()),
];
let args = unsafe { HandleValueArray::from_rooted_slice(&args_slice) };
rooted!(in(cx) let mut result = UndefinedValue());
unsafe { Call(cx, paint_instance.handle(), paint_function.handle(), &args, result.handle_mut()); }
@ -194,12 +208,13 @@ impl PaintWorkletGlobalScope {
rendering_context.send_data(sender);
}
// https://drafts.csswg.org/css-images-4/#invalid-image
fn send_invalid_image(&self, size: Size2D<Au>, sender: IpcSender<CanvasData>) {
debug!("Sending an invalid image.");
let width = size.width.to_px().abs() as u32;
let height = size.height.to_px().abs() as u32;
let len = (width as usize) * (height as usize) * 4;
let pixel = [0xFF, 0x00, 0x00, 0xFF];
let pixel = [0x00, 0x00, 0x00, 0x00];
let bytes: Vec<u8> = pixel.iter().cloned().cycle().take(len).collect();
let mut image = Image {
width: width,
@ -214,6 +229,24 @@ impl PaintWorkletGlobalScope {
let canvas_data = CanvasData::Image(image_data);
let _ = sender.send(canvas_data);
}
fn painter(&self, name: Atom) -> Arc<Painter> {
// Rather annoyingly we have to use a mutex here to make the painter Sync.
struct WorkletPainter(Atom, Mutex<WorkletExecutor>);
impl Painter for WorkletPainter {
fn draw_a_paint_image(&self,
size: Size2D<Au>,
properties: Vec<(Atom, String)>,
sender: IpcSender<CanvasData>)
{
let name = self.0.clone();
let task = PaintWorkletTask::DrawAPaintImage(name, size, properties, sender);
self.1.lock().expect("Locking a painter.")
.schedule_a_worklet_task(WorkletTask::Paint(task));
}
}
Arc::new(WorkletPainter(name, Mutex::new(self.worklet_global.executor())))
}
}
impl PaintWorkletGlobalScopeMethods for PaintWorkletGlobalScope {
@ -239,27 +272,22 @@ impl PaintWorkletGlobalScopeMethods for PaintWorkletGlobalScope {
}
// Step 4-6.
debug!("Getting input properties.");
let input_properties: Vec<DOMString> =
unsafe { get_property(cx, paint_obj.handle(), "inputProperties", StringificationBehavior::Default) }?
let mut property_names: Vec<String> =
unsafe { get_property(cx, paint_obj.handle(), "inputProperties", ()) }?
.unwrap_or_default();
debug!("Got {:?}.", input_properties);
let properties = property_names.drain(..).map(Atom::from).collect();
// Step 7-9.
debug!("Getting input arguments.");
let input_arguments: Vec<DOMString> =
unsafe { get_property(cx, paint_obj.handle(), "inputArguments", StringificationBehavior::Default) }?
let _argument_names: Vec<String> =
unsafe { get_property(cx, paint_obj.handle(), "inputArguments", ()) }?
.unwrap_or_default();
debug!("Got {:?}.", input_arguments);
// TODO: Steps 10-11.
// Steps 12-13.
debug!("Getting alpha.");
let alpha: bool =
unsafe { get_property(cx, paint_obj.handle(), "alpha", ()) }?
.unwrap_or(true);
debug!("Got {:?}.", alpha);
// Step 14
if unsafe { !IsConstructor(paint_obj.get()) } {
@ -285,23 +313,28 @@ impl PaintWorkletGlobalScopeMethods for PaintWorkletGlobalScope {
let context = PaintRenderingContext2D::new(self);
let definition = PaintDefinition::new(paint_val.handle(),
paint_function.handle(),
input_properties,
alpha,
&*context);
// Step 20.
debug!("Registering definition {}.", name);
self.paint_definitions.borrow_mut().insert(name, definition);
self.paint_definitions.borrow_mut().insert(name.clone(), definition);
// TODO: Step 21.
// Inform layout that there is a registered paint worklet.
// TODO: layout will end up getting this message multiple times.
let painter = self.painter(name.clone());
let msg = Msg::RegisterPaint(name, properties, painter);
self.worklet_global.send_to_layout(msg);
Ok(())
}
}
/// Tasks which can be peformed by a paint worklet
pub enum PaintWorkletTask {
DrawAPaintImage(Atom, Size2D<Au>, IpcSender<CanvasData>)
DrawAPaintImage(Atom, Size2D<Au>, Vec<(Atom, String)>, IpcSender<CanvasData>)
}
/// A paint definition
@ -314,7 +347,6 @@ struct PaintDefinition {
class_constructor: Heap<JSVal>,
paint_function: Heap<JSVal>,
constructor_valid_flag: Cell<bool>,
input_properties: Vec<DOMString>,
context_alpha_flag: bool,
// TODO: the spec calls for fresh rendering contexts each time a paint image is drawn,
// but to avoid having the primary worklet thread create a new renering context,
@ -325,7 +357,6 @@ struct PaintDefinition {
impl PaintDefinition {
fn new(class_constructor: HandleValue,
paint_function: HandleValue,
input_properties: Vec<DOMString>,
alpha: bool,
context: &PaintRenderingContext2D)
-> Box<PaintDefinition>
@ -334,7 +365,6 @@ impl PaintDefinition {
class_constructor: Heap::default(),
paint_function: Heap::default(),
constructor_valid_flag: Cell::new(true),
input_properties: input_properties,
context_alpha_flag: alpha,
context: JS::from_ref(context),
});

66
components/script/dom/stylepropertymapreadonly.rs Normal file
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@ -0,0 +1,66 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::StylePropertyMapReadOnlyMethods;
use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::Wrap;
use dom::bindings::js::JS;
use dom::bindings::js::Root;
use dom::bindings::reflector::Reflector;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::str::DOMString;
use dom::cssstylevalue::CSSStyleValue;
use dom::globalscope::GlobalScope;
use dom_struct::dom_struct;
use servo_atoms::Atom;
use std::collections::HashMap;
use std::iter::Iterator;
#[dom_struct]
pub struct StylePropertyMapReadOnly {
reflector: Reflector,
entries: HashMap<Atom, JS<CSSStyleValue>>,
}
impl StylePropertyMapReadOnly {
fn new_inherited<Entries>(entries: Entries) -> StylePropertyMapReadOnly where
Entries: IntoIterator<Item=(Atom, JS<CSSStyleValue>)>
{
StylePropertyMapReadOnly {
reflector: Reflector::new(),
entries: entries.into_iter().collect(),
}
}
pub fn from_iter<Entries>(global: &GlobalScope, entries: Entries) -> Root<StylePropertyMapReadOnly> where
Entries: IntoIterator<Item=(Atom, String)>,
{
let mut keys = Vec::new();
rooted_vec!(let mut values);
let iter = entries.into_iter();
let (lo, _) = iter.size_hint();
keys.reserve(lo);
values.reserve(lo);
for (key, value) in iter {
let value = CSSStyleValue::new(global, value);
keys.push(key);
values.push(JS::from_ref(&*value));
}
let iter = keys.drain(..).zip(values.iter().cloned());
reflect_dom_object(box StylePropertyMapReadOnly::new_inherited(iter), global, Wrap)
}
}
impl StylePropertyMapReadOnlyMethods for StylePropertyMapReadOnly {
/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-get
fn Get(&self, property: DOMString) -> Option<Root<CSSStyleValue>> {
// TODO: avoid constructing an Atom
self.entries.get(&Atom::from(property)).map(|value| Root::from_ref(&**value))
}
/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-has
fn Has(&self, property: DOMString) -> bool {
// TODO: avoid constructing an Atom
self.entries.contains_key(&Atom::from(property))
}
}

4
components/script/dom/testworkletglobalscope.rs
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@ -7,6 +7,7 @@ use dom::bindings::codegen::Bindings::TestWorkletGlobalScopeBinding;
use dom::bindings::codegen::Bindings::TestWorkletGlobalScopeBinding::TestWorkletGlobalScopeMethods;
use dom::bindings::js::Root;
use dom::bindings::str::DOMString;
use dom::worklet::WorkletExecutor;
use dom::workletglobalscope::WorkletGlobalScope;
use dom::workletglobalscope::WorkletGlobalScopeInit;
use dom_struct::dom_struct;
@ -31,12 +32,13 @@ impl TestWorkletGlobalScope {
pub fn new(runtime: &Runtime,
pipeline_id: PipelineId,
base_url: ServoUrl,
executor: WorkletExecutor,
init: &WorkletGlobalScopeInit)
-> Root<TestWorkletGlobalScope>
{
debug!("Creating test worklet global scope for pipeline {}.", pipeline_id);
let global = box TestWorkletGlobalScope {
worklet_global: WorkletGlobalScope::new_inherited(pipeline_id, base_url, init),
worklet_global: WorkletGlobalScope::new_inherited(pipeline_id, base_url, executor, init),
lookup_table: Default::default(),
};
unsafe { TestWorkletGlobalScopeBinding::Wrap(runtime.cx(), global) }

14
components/script/dom/webidls/CSSStyleValue.webidl Normal file
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@ -0,0 +1,14 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// https://drafts.css-houdini.org/css-typed-om-1/#cssstylevalue
// NOTE: should this be exposed to Window?
[Exposed=(Worklet)]
interface CSSStyleValue {
stringifier;
// static CSSStyleValue? parse(DOMString property, DOMString cssText);
// static sequence<CSSStyleValue>? parseAll(DOMString property, DOMString cssText);
// This is a deprecated property, it's not in the spec any more but is used in houdini-samples
readonly attribute DOMString cssText;
};

15
components/script/dom/webidls/StylePropertyMapReadOnly.webidl Normal file
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@ -0,0 +1,15 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// https://drafts.css-houdini.org/css-typed-om-1/#stylepropertymapreadonly
// NOTE: should this be exposed to Window?
[Exposed=(Worklet)]
interface StylePropertyMapReadOnly {
CSSStyleValue? get(DOMString property);
// sequence<CSSStyleValue> getAll(DOMString property);
boolean has(DOMString property);
// iterable<DOMString, (CSSStyleValue or sequence<CSSStyleValue>)>;
// sequence<DOMString> getProperties();
// stringifier;
};

5
components/script/dom/window.rs
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@ -386,10 +386,7 @@ impl Window {
fn new_paint_worklet(&self) -> Root<Worklet> {
debug!("Creating new paint worklet.");
let worklet = Worklet::new(self, WorkletGlobalScopeType::Paint);
let executor = Arc::new(worklet.executor());
let _ = self.layout_chan.send(Msg::SetPaintWorkletExecutor(executor));
worklet
Worklet::new(self, WorkletGlobalScopeType::Paint)
}
pub fn permission_state_invocation_results(&self) -> &DOMRefCell<HashMap<String, PermissionState>> {

61
components/script/dom/worklet.rs
View file

@ -10,8 +10,6 @@
//! thread pool implementation, which only performs GC or code loading on
//! a backup thread, not on the primary worklet thread.
use app_units::Au;
use canvas_traits::CanvasData;
use dom::bindings::codegen::Bindings::RequestBinding::RequestCredentials;
use dom::bindings::codegen::Bindings::WindowBinding::WindowBinding::WindowMethods;
use dom::bindings::codegen::Bindings::WorkletBinding::WorkletMethods;
@ -29,7 +27,6 @@ use dom::bindings::str::USVString;
use dom::bindings::trace::JSTraceable;
use dom::bindings::trace::RootedTraceableBox;
use dom::globalscope::GlobalScope;
use dom::paintworkletglobalscope::PaintWorkletTask;
use dom::promise::Promise;
use dom::testworkletglobalscope::TestWorkletTask;
use dom::window::Window;
@ -38,8 +35,6 @@ use dom::workletglobalscope::WorkletGlobalScopeInit;
use dom::workletglobalscope::WorkletGlobalScopeType;
use dom::workletglobalscope::WorkletTask;
use dom_struct::dom_struct;
use euclid::Size2D;
use ipc_channel::ipc::IpcSender;
use js::jsapi::JSGCParamKey;
use js::jsapi::JSTracer;
use js::jsapi::JS_GC;
@ -59,8 +54,6 @@ use script_runtime::new_rt_and_cx;
use script_thread::MainThreadScriptMsg;
use script_thread::Runnable;
use script_thread::ScriptThread;
use script_traits::PaintWorkletExecutor;
use servo_atoms::Atom;
use servo_rand;
use servo_url::ImmutableOrigin;
use servo_url::ServoUrl;
@ -69,7 +62,6 @@ use std::collections::HashMap;
use std::collections::hash_map;
use std::rc::Rc;
use std::sync::Arc;
use std::sync::Mutex;
use std::sync::atomic::AtomicIsize;
use std::sync::atomic::Ordering;
use std::sync::mpsc;
@ -117,13 +109,6 @@ impl Worklet {
pub fn worklet_global_scope_type(&self) -> WorkletGlobalScopeType {
self.global_type
}
pub fn executor(&self) -> WorkletExecutor {
WorkletExecutor {
worklet_id: self.worklet_id,
primary_sender: Mutex::new(ScriptThread::worklet_thread_pool().primary_sender.clone()),
}
}
}
impl WorkletMethods for Worklet {
@ -268,7 +253,7 @@ impl Drop for WorkletThreadPool {
impl WorkletThreadPool {
/// Create a new thread pool and spawn the threads.
/// When the thread pool is dropped, the threads will be asked to quit.
pub fn spawn(script_sender: Sender<MainThreadScriptMsg>, global_init: WorkletGlobalScopeInit) -> WorkletThreadPool {
pub fn spawn(global_init: WorkletGlobalScopeInit) -> WorkletThreadPool {
let primary_role = WorkletThreadRole::new(false, false);
let hot_backup_role = WorkletThreadRole::new(true, false);
let cold_backup_role = WorkletThreadRole::new(false, true);
@ -276,9 +261,9 @@ impl WorkletThreadPool {
let hot_backup_sender = hot_backup_role.sender.clone();
let cold_backup_sender = cold_backup_role.sender.clone();
let init = WorkletThreadInit {
primary_sender: primary_sender.clone(),
hot_backup_sender: hot_backup_sender.clone(),
cold_backup_sender: cold_backup_sender.clone(),
script_sender: script_sender.clone(),
global_init: global_init,
};
WorkletThreadPool {
@ -388,9 +373,9 @@ impl WorkletThreadRole {
#[derive(Clone)]
struct WorkletThreadInit {
/// Senders
primary_sender: Sender<WorkletData>,
hot_backup_sender: Sender<WorkletData>,
cold_backup_sender: Sender<WorkletData>,
script_sender: Sender<MainThreadScriptMsg>,
/// Data for initializing new worklet global scopes
global_init: WorkletGlobalScopeInit,
@ -406,9 +391,9 @@ struct WorkletThread {
control_receiver: Receiver<WorkletControl>,
/// Senders
primary_sender: Sender<WorkletData>,
hot_backup_sender: Sender<WorkletData>,
cold_backup_sender: Sender<WorkletData>,
script_sender: Sender<MainThreadScriptMsg>,
/// Data for initializing new worklet global scopes
global_init: WorkletGlobalScopeInit,
@ -451,9 +436,9 @@ impl WorkletThread {
let mut thread = RootedTraceableBox::new(WorkletThread {
role: role,
control_receiver: control_receiver,
primary_sender: init.primary_sender,
hot_backup_sender: init.hot_backup_sender,
cold_backup_sender: init.cold_backup_sender,
script_sender: init.script_sender,
global_init: init.global_init,
global_scopes: HashMap::new(),
control_buffer: None,
@ -562,7 +547,8 @@ impl WorkletThread {
hash_map::Entry::Occupied(entry) => Root::from_ref(entry.get()),
hash_map::Entry::Vacant(entry) => {
debug!("Creating new worklet global scope.");
let result = global_type.new(&self.runtime, pipeline_id, base_url, &self.global_init);
let executor = WorkletExecutor::new(worklet_id, self.primary_sender.clone());
let result = global_type.new(&self.runtime, pipeline_id, base_url, executor, &self.global_init);
entry.insert(JS::from_ref(&*result));
result
},
@ -626,7 +612,7 @@ impl WorkletThread {
if old_counter == 1 {
debug!("Resolving promise.");
let msg = MainThreadScriptMsg::WorkletLoaded(pipeline_id);
self.script_sender.send(msg).expect("Worklet thread outlived script thread.");
self.global_init.script_sender.send(msg).expect("Worklet thread outlived script thread.");
self.run_in_script_thread(promise.resolve_runnable(()));
}
}
@ -668,35 +654,28 @@ impl WorkletThread {
{
let msg = CommonScriptMsg::RunnableMsg(ScriptThreadEventCategory::WorkletEvent, box runnable);
let msg = MainThreadScriptMsg::Common(msg);
self.script_sender.send(msg).expect("Worklet thread outlived script thread.");
self.global_init.script_sender.send(msg).expect("Worklet thread outlived script thread.");
}
}
/// An executor of worklet tasks
#[derive(Clone, JSTraceable, HeapSizeOf)]
pub struct WorkletExecutor {
worklet_id: WorkletId,
// Rather annoyingly, we have to use a mutex here because
// layout threads share their context rather than cloning it.
primary_sender: Mutex<Sender<WorkletData>>,
#[ignore_heap_size_of = "channels are hard"]
primary_sender: Sender<WorkletData>,
}
impl WorkletExecutor {
/// Schedule a worklet task to be peformed by the worklet thread pool.
fn schedule_a_worklet_task(&self, task: WorkletTask) {
let _ = self.primary_sender.lock()
.expect("Locking the worklet channel.")
.send(WorkletData::Task(self.worklet_id, task));
fn new(worklet_id: WorkletId, primary_sender: Sender<WorkletData>) -> WorkletExecutor {
WorkletExecutor {
worklet_id: worklet_id,
primary_sender: primary_sender,
}
}
}
impl PaintWorkletExecutor for WorkletExecutor {
/// https://drafts.css-houdini.org/css-paint-api/#draw-a-paint-image
fn draw_a_paint_image(&self,
name: Atom,
concrete_object_size: Size2D<Au>,
sender: IpcSender<CanvasData>)
{
let task = WorkletTask::Paint(PaintWorkletTask::DrawAPaintImage(name, concrete_object_size, sender));
self.schedule_a_worklet_task(task);
/// Schedule a worklet task to be peformed by the worklet thread pool.
pub fn schedule_a_worklet_task(&self, task: WorkletTask) {
let _ = self.primary_sender.send(WorkletData::Task(self.worklet_id, task));
}
}

49
components/script/dom/workletglobalscope.rs
View file

@ -10,6 +10,7 @@ use dom::paintworkletglobalscope::PaintWorkletGlobalScope;
use dom::paintworkletglobalscope::PaintWorkletTask;
use dom::testworkletglobalscope::TestWorkletGlobalScope;
use dom::testworkletglobalscope::TestWorkletTask;
use dom::worklet::WorkletExecutor;
use dom_struct::dom_struct;
use ipc_channel::ipc;
use ipc_channel::ipc::IpcSender;
@ -23,12 +24,19 @@ use net_traits::ResourceThreads;
use net_traits::image_cache::ImageCache;
use profile_traits::mem;
use profile_traits::time;
use script_layout_interface::message::Msg;
use script_runtime::CommonScriptMsg;
use script_runtime::ScriptThreadEventCategory;
use script_thread::MainThreadScriptMsg;
use script_thread::Runnable;
use script_thread::ScriptThread;
use script_traits::ScriptMsg;
use script_traits::TimerSchedulerMsg;
use servo_url::ImmutableOrigin;
use servo_url::MutableOrigin;
use servo_url::ServoUrl;
use std::sync::Arc;
use std::sync::mpsc::Sender;
#[dom_struct]
/// https://drafts.css-houdini.org/worklets/#workletglobalscope
@ -39,12 +47,18 @@ pub struct WorkletGlobalScope {
base_url: ServoUrl,
/// The microtask queue for this worklet
microtask_queue: MicrotaskQueue,
/// Sender back to the script thread
#[ignore_heap_size_of = "channels are hard"]
script_sender: Sender<MainThreadScriptMsg>,
/// Worklet task executor
executor: WorkletExecutor,
}
impl WorkletGlobalScope {
/// Create a new stack-allocated `WorkletGlobalScope`.
pub fn new_inherited(pipeline_id: PipelineId,
base_url: ServoUrl,
executor: WorkletExecutor,
init: &WorkletGlobalScopeInit)
-> WorkletGlobalScope {
// Any timer events fired on this global are ignored.
@ -61,6 +75,8 @@ impl WorkletGlobalScope {
MutableOrigin::new(ImmutableOrigin::new_opaque())),
base_url: base_url,
microtask_queue: MicrotaskQueue::default(),
script_sender: init.script_sender.clone(),
executor: executor,
}
}
@ -76,11 +92,37 @@ impl WorkletGlobalScope {
self.globalscope.evaluate_js_on_global_with_result(&*script, rval.handle_mut())
}
/// Run a runnable in the main script thread.
pub fn run_in_script_thread<R>(&self, runnable: R) where
R: 'static + Send + Runnable,
{
let msg = CommonScriptMsg::RunnableMsg(ScriptThreadEventCategory::WorkletEvent, box runnable);
let msg = MainThreadScriptMsg::Common(msg);
self.script_sender.send(msg).expect("Worklet thread outlived script thread.");
}
/// Send a message to layout.
pub fn send_to_layout(&self, msg: Msg) {
struct RunnableMsg(PipelineId, Msg);
impl Runnable for RunnableMsg {
fn main_thread_handler(self: Box<Self>, script_thread: &ScriptThread) {
script_thread.send_to_layout(self.0, self.1);
}
}
let pipeline_id = self.globalscope.pipeline_id();
self.run_in_script_thread(RunnableMsg(pipeline_id, msg));
}
/// The base URL of this global.
pub fn base_url(&self) -> ServoUrl {
self.base_url.clone()
}
/// The worklet executor.
pub fn executor(&self) -> WorkletExecutor {
self.executor.clone()
}
/// Queue up a microtask to be executed in this global.
pub fn enqueue_microtask(&self, job: Microtask) {
self.microtask_queue.enqueue(job);
@ -113,6 +155,8 @@ impl WorkletGlobalScope {
/// Resources required by workletglobalscopes
#[derive(Clone)]
pub struct WorkletGlobalScopeInit {
/// Channel to the main script thread
pub script_sender: Sender<MainThreadScriptMsg>,
/// Channel to a resource thread
pub resource_threads: ResourceThreads,
/// Channel to the memory profiler
@ -144,14 +188,15 @@ impl WorkletGlobalScopeType {
runtime: &Runtime,
pipeline_id: PipelineId,
base_url: ServoUrl,
executor: WorkletExecutor,
init: &WorkletGlobalScopeInit)
-> Root<WorkletGlobalScope>
{
match *self {
WorkletGlobalScopeType::Test =>
Root::upcast(TestWorkletGlobalScope::new(runtime, pipeline_id, base_url, init)),
Root::upcast(TestWorkletGlobalScope::new(runtime, pipeline_id, base_url, executor, init)),
WorkletGlobalScopeType::Paint =>
Root::upcast(PaintWorkletGlobalScope::new(runtime, pipeline_id, base_url, init)),
Root::upcast(PaintWorkletGlobalScope::new(runtime, pipeline_id, base_url, executor, init)),
}
}
}

15
components/script/script_thread.rs
View file

@ -79,7 +79,7 @@ use net_traits::request::{CredentialsMode, Destination, RedirectMode, RequestIni
use net_traits::storage_thread::StorageType;
use profile_traits::mem::{self, OpaqueSender, Report, ReportKind, ReportsChan};
use profile_traits::time::{self, ProfilerCategory, profile};
use script_layout_interface::message::{self, NewLayoutThreadInfo, ReflowQueryType};
use script_layout_interface::message::{self, Msg, NewLayoutThreadInfo, ReflowQueryType};
use script_runtime::{CommonScriptMsg, ScriptChan, ScriptThreadEventCategory};
use script_runtime::{ScriptPort, StackRootTLS, get_reports, new_rt_and_cx};
use script_traits::{CompositorEvent, ConstellationControlMsg};
@ -718,8 +718,8 @@ impl ScriptThread {
SCRIPT_THREAD_ROOT.with(|root| {
let script_thread = unsafe { &*root.get().unwrap() };
script_thread.worklet_thread_pool.borrow_mut().get_or_insert_with(|| {
let chan = script_thread.chan.0.clone();
let init = WorkletGlobalScopeInit {
script_sender: script_thread.chan.0.clone(),
resource_threads: script_thread.resource_threads.clone(),
mem_profiler_chan: script_thread.mem_profiler_chan.clone(),
time_profiler_chan: script_thread.time_profiler_chan.clone(),
@ -728,11 +728,20 @@ impl ScriptThread {
scheduler_chan: script_thread.scheduler_chan.clone(),
image_cache: script_thread.image_cache.clone(),
};
Rc::new(WorkletThreadPool::spawn(chan, init))
Rc::new(WorkletThreadPool::spawn(init))
}).clone()
})
}
pub fn send_to_layout(&self, pipeline_id: PipelineId, msg: Msg) {
let window = self.documents.borrow().find_window(pipeline_id);
let window = match window {
Some(window) => window,
None => return warn!("Message sent to layout after pipeline {} closed.", pipeline_id),
};
let _ = window.layout_chan().send(msg);
}
/// Creates a new script thread.
pub fn new(state: InitialScriptState,
port: Receiver<MainThreadScriptMsg>,