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impl timer-task-source, dedicated time-out mechanism for service-worker

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This commit is contained in:
Gregory Terzian 2019-11-17 14:37:45 +08:00
parent d553158e95
commit 50a7111eb6
13 changed files with 241 additions and 204 deletions
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25
components/script/timers.rs
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@ -34,8 +34,12 @@ pub struct OneshotTimerHandle(i32);
pub struct OneshotTimers {
js_timers: JsTimers,
#[ignore_malloc_size_of = "Defined in std"]
timer_event_chan: IpcSender<TimerEvent>,
/// The sender, to be cloned for each timer,
/// on which the timer scheduler in the constellation can send an event
/// when the timer is due.
timer_event_chan: DomRefCell<Option<IpcSender<TimerEvent>>>,
#[ignore_malloc_size_of = "Defined in std"]
/// The sender to the timer scheduler in the constellation.
scheduler_chan: IpcSender<TimerSchedulerMsg>,
next_timer_handle: Cell<OneshotTimerHandle>,
timers: DomRefCell<Vec<OneshotTimer>>,
@ -109,13 +113,10 @@ impl PartialEq for OneshotTimer {
}
impl OneshotTimers {
pub fn new(
timer_event_chan: IpcSender<TimerEvent>,
scheduler_chan: IpcSender<TimerSchedulerMsg>,
) -> OneshotTimers {
pub fn new(scheduler_chan: IpcSender<TimerSchedulerMsg>) -> OneshotTimers {
OneshotTimers {
js_timers: JsTimers::new(),
timer_event_chan: timer_event_chan,
timer_event_chan: DomRefCell::new(None),
scheduler_chan: scheduler_chan,
next_timer_handle: Cell::new(OneshotTimerHandle(1)),
timers: DomRefCell::new(Vec::new()),
@ -125,6 +126,12 @@ impl OneshotTimers {
}
}
pub fn setup_scheduling(&self, timer_event_chan: IpcSender<TimerEvent>) {
let mut chan = self.timer_event_chan.borrow_mut();
assert!(chan.is_none());
*chan = Some(timer_event_chan);
}
pub fn schedule_callback(
&self,
callback: OneshotTimerCallback,
@ -279,7 +286,10 @@ impl OneshotTimers {
.saturating_sub(precise_time_ms().get()),
);
let request = TimerEventRequest(
self.timer_event_chan.clone(),
self.timer_event_chan
.borrow()
.clone()
.expect("Timer event chan not setup to schedule timers."),
timer.source,
expected_event_id,
delay,
@ -331,6 +341,7 @@ pub struct JsTimerHandle(i32);
#[derive(DenyPublicFields, JSTraceable, MallocSizeOf)]
pub struct JsTimers {
next_timer_handle: Cell<JsTimerHandle>,
/// https://html.spec.whatwg.org/multipage/#list-of-active-timers
active_timers: DomRefCell<HashMap<JsTimerHandle, JsTimerEntry>>,
/// The nesting level of the currently executing timer task or 0.
nesting_level: Cell<u32>,