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Timing cap inferenced by call numbers when using low-resolution timers.

This commit is contained in:
hackademix 2019-05-28 01:32:09 +02:00
parent 4d4fa3c6ed
commit cd44c749f4
1 changed files with 13 additions and 3 deletions
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16
src/lib/Timing.js
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@ -1,11 +1,12 @@
class Timing {
constructor(workSlot = 4, longTime = 20000, pauseTime = 20) {
constructor(workSlot = 10, longTime = 20000, pauseTime = 20) {
this.workSlot = workSlot;
this.longTime = longTime;
this.pauseTime = pauseTime;
this.interrupted = false;
this.fatalTimeout = false;
this.maxCalls = 1000;
this.reset();
}
@ -16,12 +17,20 @@ class Timing {
async pause() {
if (this.interrupted) throw new TimingException("Interrupted");
let now = Date.now();
this.calls++;
let sinceLastCall = now - this.lastCall;
if (sinceLastCall > this.workSlot && this.calls > 1000) {
// low resolution (100ms) timer? Let's cap approximating by calls number
this.maxCalls = this.calls / sinceLastCall * this.workSlot;
}
this.lastCall = now;
this.elapsed = now - this.timeOrigin;
if (now - this.lastPause > this.workSlot) {
if (now - this.lastPause > this.workSlot || this.calls > this.maxCalls) {
this.tooLong = this.elapsed >= this.longTime;
if (this.tooLong && this.fatalTimeout) {
throw new TimingException(`Exceeded ${this.longTime}ms timeout`);
}
this.calls = 0;
await Timing.sleep(this.pauseTime);
this.lastPause = Date.now();
return true;
@ -31,7 +40,8 @@ class Timing {
reset() {
this.elapsed = 0;
this.timeOrigin = this.lastPause = Date.now();
this.calls = 0;
this.timeOrigin = this.lastPause = this.lastCall = Date.now();
this.tooLong = false;
}
}