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fix interrupt sync desync issues

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This commit is contained in:
Arthur Lu 2023-07-18 20:27:51 +00:00
parent 98f2c39e6e
commit 790aa4959d
1 changed files with 11 additions and 1 deletions
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12
src/clientsync.js
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@ -15,6 +15,8 @@ const requestedRates = {};
let timer = null;
// previous cluster state for interrupt handler
let prevState = {};
// target ms value
let targetMSTime = null;
export function setupClientSync (app, server, options) {
const schemes = options.schemes;
@ -101,6 +103,7 @@ export function setupClientSync (app, server, options) {
if (Object.keys(requestedRates).length === 0) { // if there are no requested rates left, clear the timer
clearTimeout(timer);
timer = null;
targetMSTime = null;
}
// terminate socket
socket.terminate();
@ -116,6 +119,8 @@ export function setupClientSync (app, server, options) {
// if timer has not started, start it with requested rate
if (!timer) {
timer = setTimeout(handleInterruptSync, rate);
const time = global.process.uptime();
targetMSTime = time - Math.floor(time);
}
// otherwise, if the timer has started but the rate is lower than the current minimum
// AND if the next event trigger is more than the new rate in the future,
@ -124,6 +129,8 @@ export function setupClientSync (app, server, options) {
else if (rate < Math.min.apply(null, Object.values(requestedRates)) && getTimeLeft(timer) > rate) {
clearTimeout(timer);
timer = setTimeout(handleInterruptSync, rate);
const time = global.process.uptime();
targetMSTime = time - Math.floor(time);
}
// otherwise just add the rate to the list, when the next even trigger happens it will be requeued with the new requested rates
requestedRates[socket.rateIndex] = rate;
@ -159,11 +166,14 @@ export function setupClientSync (app, server, options) {
const minRequestedRate = Math.min.apply(null, Object.values(requestedRates));
// if the minimum rate is not Infinity, schedule the next timer
if (minRequestedRate < Infinity) {
timer = setTimeout(handleInterruptSync, minRequestedRate);
const time = global.process.uptime() - targetMSTime;
const delay = (time - Math.round(time)) * 1000;
timer = setTimeout(handleInterruptSync, minRequestedRate - delay);
}
// if the minimum rate is Infinity, then don't schedule anything and set timer to null
else {
timer = null;
targetMSTime = null;
return;
}
// get current cluster resources