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Replace mpsc with crossbeam/servo channel, update ipc-channel

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Co-authored-by: Gregory Terzian <gterzian@users.noreply.github.com>
This commit is contained in:
Simon Sapin 2017-12-17 23:53:32 +01:00 • committed by Gregory Terzian
parent b977b4994c
commit 2a996fbc8f
89 changed files with 341 additions and 377 deletions
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31
components/constellation/timer_scheduler.rs
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@ -4,9 +4,9 @@
use ipc_channel::ipc::{self, IpcSender};
use script_traits::{TimerEvent, TimerEventRequest, TimerSchedulerMsg};
use servo_channel::base_channel;
use std::cmp::{self, Ord};
use std::collections::BinaryHeap;
use servo_channel::base_channel;
use std::thread;
use std::time::{Duration, Instant};
@ -69,26 +69,29 @@ impl TimerScheduler {
scheduled_events.pop();
}
// Look to see if there are any incoming events
match req_receiver.try_recv() {
// If there is an event, add it to the priority queue
Ok(TimerSchedulerMsg::Request(req)) => {
let TimerEventRequest(_, _, _, delay) = req;
let schedule = Instant::now() + Duration::from_millis(delay.get());
let event = ScheduledEvent {
request: req,
for_time: schedule,
};
scheduled_events.push(event);
select! {
recv(req_receiver, msg) => match msg {
// If there is an event, add it to the priority queue
Some(TimerSchedulerMsg::Request(req)) => {
let TimerEventRequest(_, _, _, delay) = req;
let schedule = Instant::now() + Duration::from_millis(delay.get());
let event = ScheduledEvent {
request: req,
for_time: schedule,
};
scheduled_events.push(event);
},
// If the channel is closed or we are shutting down, we are done.
Some(TimerSchedulerMsg::Exit) |
None => break,
},
// If there is no incoming event, park the thread,
// it will either be unparked when a new event arrives,
// or by a timeout.
Err(Empty) => match scheduled_events.peek() {
default => match scheduled_events.peek() {
None => thread::park(),
Some(event) => thread::park_timeout(event.for_time - now),
},
// If the channel is closed or we are shutting down, we are done.
Ok(TimerSchedulerMsg::Exit) | Err(Disconnected) => break,
}
}
// This thread can terminate if the req_ipc_sender is dropped.