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Performance: only ping 'allPreferences' when all preferences are set, not on every preference added (which causes a O(n²) in some cases)

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This commit is contained in:
Pieter Vander Vennet 2025-01-02 04:30:18 +01:00
parent 335906b481
commit 312a32e7b5
1 changed files with 17 additions and 7 deletions
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24
src/Logic/Osm/OsmPreferences.ts
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@ -38,14 +38,23 @@ export class OsmPreferences {
})
}
private setPreferencesAll(key: string, value: string) {
/**
* Sets a new preferenceValue in 'allPreferences'
* @param key
* @param value
* @param deferping: the end user will ping '_allPreferences'
* @private
*/
private setPreferencesAll(key: string, value: string, deferping = false) {
if (this._allPreferences.data[key] !== value) {
this._allPreferences.data[key] = value
this._allPreferences.ping()
if(!deferping){
this._allPreferences.ping()
}
}
}
private initPreference(key: string, value: string = undefined): UIEventSource<string> {
private initPreference(key: string, value: string = undefined, deferPing = false): UIEventSource<string> {
if (this.preferences[key] !== undefined) {
if (value !== undefined) {
this.preferences[key].set(value)
@ -54,12 +63,12 @@ export class OsmPreferences {
}
const pref = (this.preferences[key] = new UIEventSource(value, "preference: " + key))
if (value) {
this.setPreferencesAll(key, value)
this.setPreferencesAll(key, value, deferPing)
}
pref.addCallback((v) => {
console.log("Got an update:", key, "--->", v)
this.uploadKvSplit(key, v)
this.setPreferencesAll(key, v)
this.setPreferencesAll(key, v, deferPing)
})
return pref
}
@ -73,11 +82,12 @@ export class OsmPreferences {
await this.removeLegacy(legacy)
}
for (const key in merged) {
this.initPreference(key, prefs[key])
this.initPreference(key, prefs[key], true)
}
for (const key in legacy) {
this.initPreference(key, legacy[key])
this.initPreference(key, legacy[key], true)
}
this._allPreferences.ping()
}
public getPreference(key: string, defaultValue: string = undefined, prefix?: string) {