@arcgis/core/core/MemCache.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.33/esri/copyright.txt for details.
*/
const t=-3,i=t-1;var s;!function(t){t[t.ALL=0]="ALL",t[t.SOME=1]="SOME"}(s||(s={}));class e{constructor(t,i,s,e=0){this.name=t,this._storage=i,this.removeFunc=s,this._defaultPriority=e,this.id=`${r++}${_}`,this.size=0,this._hit=0,this._miss=0,this._storage.register(this)}destroy(){this._storage.deregister(this),this._storage=null}get hitRate(){return this._hit/(this._hit+this._miss)}get storageSize(){return this._storage.size}getSize(t){return this._storage.getSize(this,t)}set maxSize(t){this._storage.setMaxSize(this,t)}resetHitRate(){this._hit=this._miss=0}put(t,i,s=this._defaultPriority){this._storage.put(this,t,i,i.cachedMemory,s)}pop(t){const i=this._storage.pop(this,t);return void 0===i?++this._miss:++this._hit,i}get(t){const i=this._storage.get(this,t);return void 0===i?++this._miss:++this._hit,i}peek(t){return this._storage.peek(this,t)}updateSize(t,i){this._storage.updateSize(this,t,i,i.cachedMemory)}clear(){this._storage.clear(this)}clearAll(){this._storage.clearAll()}*[Symbol.iterator](){yield*this._storage.values(this)}get performanceInfo(){return this._storage.performanceInfo}resetStats(){this._storage.resetStats()}}class h{get size(){return this._size}constructor(t=10485760){this._maxSize=t,this._db=new Map,this._size=0,this._hit=0,this._miss=0,this._users=new Map,this._sizeLimits=new Map}destroy(){this.clearAll(),this._sizeLimits.clear(),this._users.clear()}register(t){this._users.set(t.id.slice(0,-1),t)}deregister(t){this.clear(t),this._sizeLimits.delete(t),this._users.delete(t.id.slice(0,-1))}get maxSize(){return this._maxSize}set maxSize(t){this._maxSize=Math.max(t,-1),this._checkSize()}getSize(t,i){const s=this._db.get(t.id+i);return s?.size??0}put(e,h,r,_,n){h=e.id+h;const a=this._db.get(h);if(a&&(this._size-=a.size,e.size-=a.size,this._db.delete(h),a.entry!==r&&this._notifyRemove(h,a.entry,a.size,s.ALL)),_>this._maxSize)return void this._notifyRemove(h,r,_,s.ALL);if(void 0===r)return void console.warn("Refusing to cache undefined entry ");if(!_||_<0)return console.warn(`Refusing to cache entry with size ${_} for key ${h}`),void this._notifyRemove(h,r,0,s.ALL);const c=1+Math.max(n,i)-t;this._db.set(h,new o(r,_,c)),this._size+=_,e.size+=_,this._checkSize()}updateSize(t,i,e,h){i=t.id+i;const r=this._db.get(i);if(r&&r.entry===e){for(this._size-=r.size,t.size-=r.size;h>this._maxSize;){const t=this._notifyRemove(i,e,h,s.SOME);if(!(null!=t&&t>0))return void this._db.delete(i);h=t}r.size=h,this._size+=h,t.size+=h,this._checkSize()}}pop(t,i){i=t.id+i;const s=this._db.get(i);if(s)return this._size-=s.size,t.size-=s.size,this._db.delete(i),++this._hit,s.entry;++this._miss}get(t,i){i=t.id+i;const s=this._db.get(i);if(void 0!==s)return this._db.delete(i),s.lives=s.lifetime,this._db.set(i,s),++this._hit,s.entry;++this._miss}peek(t,i){const s=this._db.get(t.id+i);return s?++this._hit:++this._miss,s?.entry}get performanceInfo(){const i={Size:Math.round(this._size/1048576)+"/"+Math.round(this._maxSize/1048576)+"MB","Hit rate":Math.round(100*this._getHitRate())+"%",Entries:this._db.size.toString()},s={},e=new Array;this._db.forEach(((t,i)=>{const h=t.lifetime;e[h]=(e[h]||0)+t.size,this._users.forEach((e=>{const{id:h,name:r}=e;if(i.startsWith(h)){const i=s[r]||0;s[r]=i+t.size}}))}));const h={};this._users.forEach((t=>{const i=t.name;if("hitRate"in t&&"number"==typeof t.hitRate&&!isNaN(t.hitRate)&&t.hitRate>0){const e=s[i]||0;s[i]=e,h[i]=Math.round(100*t.hitRate)+"%"}else h[i]="0%"}));const r=Object.keys(s);r.sort(((t,i)=>s[i]-s[t])),r.forEach((t=>i[t]=Math.round(s[t]/2**20)+"MB / "+h[t]));for(let o=e.length-1;o>=0;--o){const s=e[o];s&&(i["Priority "+(o+t-1)]=Math.round(s/this._size*100)+"%")}return i}resetStats(){this._hit=this._miss=0,this._users.forEach((t=>t.resetHitRate()))}clear(t){const i=t.id;this._db.forEach(((t,e)=>{e.startsWith(i)&&(this._size-=t.size,this._db.delete(e),this._notifyRemove(e,t.entry,t.size,s.ALL))})),t.size=0}clearAll(){this._db.forEach(((t,i)=>this._notifyRemove(i,t.entry,t.size,s.ALL))),this._users.forEach((t=>t.size=0)),this._size=0,this._db.clear()}*values(t){for(const[i,s]of this._db)i.startsWith(t.id)&&(yield s.entry)}_getHitRate(){return this._hit/(this._hit+this._miss)}_notifyRemove(t,i,s,e){const h=this._users.get(t.split(_)[0])?.removeFunc,r=h?.(i,e,s);return"number"==typeof r?r:null}_checkSize(){this._sizeLimits.forEach(((t,i)=>this._checkSizeLimits(t,i))),this._checkSizeLimits(this.maxSize)}setMaxSize(t,i){null==i||i<=0?this._sizeLimits.delete(t):this._sizeLimits.set(t,i)}_checkSizeLimits(t,i){const s=i??this;if(s.size<=t)return;const e=i?.id;let h=!0;for(;h;){h=!1;for(const[r,o]of this._db)if(0===o.lifetime&&(!e||r.startsWith(e))){const e=i??this._users.get(r.split(_)[0]);if(this._purgeItem(r,o,e),s.size<=.9*t)return;h||=this._db.has(r)}}for(const[r,o]of this._db)if(!e||r.startsWith(e)){const e=i??this._users.get(r.split(_)[0]);if(this._purgeItem(r,o,e),s.size<=.9*t)return}}_purgeItem(t,i,e){if(this._db.delete(t),i.lives<=1){this._size-=i.size,e&&(e.size-=i.size);const h=this._notifyRemove(t,i.entry,i.size,s.SOME);null!=h&&h>0&&(this._size+=h,e&&(e.size+=h),i.lives=i.lifetime,i.size=h,this._db.set(t,i))}else--i.lives,this._db.set(t,i)}}let r=0;class o{constructor(t,i,s){this.entry=t,this.size=i,this.lifetime=s,this.lives=s}}const _=":";export{e as MemCache,h as MemCacheStorage,t as MinPriority,i as NoPriority,s as RemoveMode};