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Implement discarding Document objects to reclaim space.

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This commit is contained in:
Alan Jeffrey 2016-11-18 20:50:53 -06:00
parent 955e2851bf
commit 78c87ea8d7
8 changed files with 301 additions and 218 deletions
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8
components/script/timers.rs
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@ -228,18 +228,18 @@ impl OneshotTimers {
}
pub fn suspend(&self) {
assert!(self.suspended_since.get().is_none());
// Suspend is idempotent: do nothing if the timers are already suspended.
if self.suspended_since.get().is_some() { return; }
self.suspended_since.set(Some(precise_time_ms()));
self.invalidate_expected_event_id();
}
pub fn resume(&self) {
assert!(self.suspended_since.get().is_some());
// Suspend is idempotent: do nothing if the timers are already suspended.
let additional_offset = match self.suspended_since.get() {
Some(suspended_since) => precise_time_ms() - suspended_since,
None => panic!("Timers are not suspended.")
None => return,
};
self.suspension_offset.set(self.suspension_offset.get() + additional_offset);