poolifier - npm Package Compare versions

Comparing version 2.6.43 to 2.6.44

./lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),a=require("node:os"),n=require("node:async_hooks");function u(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var h=u(a);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class d extends e.EventEmitter{}const c=Object.freeze({ready:"ready",busy:"busy",full:"full",destroy:"destroy",error:"error",taskError:"taskError",backPressure:"backPressure"}),l=Object.freeze({thread:"thread",cluster:"cluster"}),g="default",m=Object.freeze((()=>{})),p={retries:6,runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},w={aggregate:!1,average:!1,median:!1},y=e=>e instanceof t.Worker?l.thread:e instanceof s.Worker?l.cluster:void 0,T=e=>e instanceof t.Worker?e.threadId:e instanceof s.Worker?e.id:void 0,f=e=>Array.isArray(e)&&0===e.length?0:Array.isArray(e)&&1===e.length?e[0]:e.reduce(((e,t)=>e+t),0)/e.length,W=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},N=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},x=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),S=(e,t)=>t===e,E=e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name,v=(e,t,s)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=b(s,e.minimum??1/0),e.maximum=C(s,e.maximum??-1/0),(t.average||t.median)&&null!=s&&(e.history.push(s),t.average?e.average=f(e.history):null!=e.average&&delete e.average,t.median?e.median=W(e.history):null!=e.median&&delete e.median))},I=()=>r.webcrypto.getRandomValues(new Uint32Array(1))[0]/4294967296,b=(...e)=>e.reduce(((e,t)=>e<t?e:t),1/0),C=(...e)=>e.reduce(((e,t)=>e>t?e:t),-1/0),R=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),z=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),O=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class F{pool;opts;nextWorkerNodeKey=0;previousWorkerNodeKey=0;strategyPolicy={dynamicWorkerUsage:!1,dynamicWorkerReady:!0};taskStatisticsRequirements={runTime:w,waitTime:w,elu:w};constructor(e,t=p){this.pool=e,this.opts=t,this.opts={...p,...t},this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}resetWorkerNodeKeyProperties(){this.nextWorkerNodeKey=0,this.previousWorkerNodeKey=0}setOptions(e){this.opts={...p,...e},this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}hasWorkerNodeBackPressure(e){return this.pool.hasWorkerNodeBackPressure(e)}isWorkerNodeEligible(e){return this.isWorkerNodeReady(e)&&!this.hasWorkerNodeBackPressure(e)}getWorkerNodeTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime.median??0:this.pool.workerNodes[e].usage.runTime.average??0}getWorkerNodeTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime.median??0:this.pool.workerNodes[e].usage.waitTime.average??0}getWorkerNodeTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active.median??0:this.pool.workerNodes[e].usage.elu.active.average??0}setPreviousWorkerNodeKey(e){this.previousWorkerNodeKey=e??this.previousWorkerNodeKey}checkNextWorkerNodeEligibility(){this.isWorkerNodeEligible(this.nextWorkerNodeKey)||(this.nextWorkerNodeKey=void 0)}computeDefaultWorkerWeight(){let e=0;for(const t of a.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/a.cpus().length)}}class Q extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:{aggregate:!0,average:!0,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){for(const e of this.pool.workerNodes)delete e.strategyData?.virtualTaskEndTimestamp;return!0}update(e){return this.pool.workerNodes[e].strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(e)},!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.fairShareNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}fairShareNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(null==t.strategyData?.virtualTaskEndTimestamp&&(t.strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(s)}),t.strategyData.virtualTaskEndTimestamp<r[e].strategyData.virtualTaskEndTimestamp?s:e)),0)}computeWorkerNodeVirtualTaskEndTimestamp(e){return this.getWorkerNodeVirtualTaskEndTimestamp(e,this.getWorkerNodeVirtualTaskStartTimestamp(e))}getWorkerNodeVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===O.elu?this.getWorkerNodeTaskElu(e):this.getWorkerNodeTaskRunTime(e))}getWorkerNodeVirtualTaskStartTimestamp(e){const t=this.pool.workerNodes[e]?.strategyData?.virtualTaskEndTimestamp,s=performance.now();return s<(t??-1/0)?t:s}}class K extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};roundId=0;defaultWorkerWeight;roundWeights;workerNodeId=0;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.resetWorkerNodeKeyProperties(),this.roundId=0,this.workerNodeId=0,this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){for(let e=this.roundId;e<this.roundWeights.length;e++){this.roundId=e;for(let t=this.workerNodeId;t<this.pool.workerNodes.length;t++){this.workerNodeId=t,this.workerNodeId!==this.nextWorkerNodeKey&&0!==this.workerNodeVirtualTaskRunTime&&(this.workerNodeVirtualTaskRunTime=0);const s=this.opts.weights?.[t]??this.defaultWorkerWeight;if(s>=this.roundWeights[e]&&this.workerNodeVirtualTaskRunTime<s)return this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(t),this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=t,this.nextWorkerNodeKey}}this.interleavedWeightedRoundRobinNextWorkerNodeId()}interleavedWeightedRoundRobinNextWorkerNodeId(){this.roundId===this.roundWeights.length-1&&this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=0,this.workerNodeId=0):this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=this.roundId+1,this.workerNodeId=0):this.workerNodeId=this.workerNodeId+1}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.workerNodeId===e&&this.workerNodeId>this.pool.workerNodes.length-1&&(this.workerNodeId=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class P extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:w};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastBusyNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastBusyNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.runTime.aggregate??0)+(t.usage.waitTime.aggregate??0)<(r[e].usage.runTime.aggregate??0)+(r[e].usage.waitTime.aggregate??0)?s:e),0)}}class M extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastUsedNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastUsedNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>t.usage.tasks.executed+t.usage.tasks.executing+t.usage.tasks.queued<r[e].usage.tasks.executed+r[e].usage.tasks.executing+r[e].usage.tasks.queued?s:e),0)}}class q extends F{taskStatisticsRequirements={runTime:w,waitTime:w,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastEluNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastEluNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.elu.active.aggregate??0)<(r[e].usage.elu.active.aggregate??0)?s:e),0)}}class A extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.resetWorkerNodeKeyProperties(),!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;return this.setPreviousWorkerNodeKey(e),this.roundRobinNextWorkerNodeKey(),e}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.nextWorkerNodeKey}}class U extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};defaultWorkerWeight;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.resetWorkerNodeKeyProperties(),this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.weightedRoundRobinNextWorkerNodeKey()}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&(this.workerNodeVirtualTaskRunTime=0,this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.opts.weights?.[this.nextWorkerNodeKey??this.previousWorkerNodeKey]??this.defaultWorkerWeight;return this.workerNodeVirtualTaskRunTime<e?this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(this.nextWorkerNodeKey??this.previousWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.workerNodeVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class B{workerChoiceStrategy;opts;workerChoiceStrategies;retriesCount=0;constructor(e,t=z.ROUND_ROBIN,s=p){this.workerChoiceStrategy=t,this.opts=s,this.opts={...p,...s},this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[z.ROUND_ROBIN,new(A.bind(this))(e,s)],[z.LEAST_USED,new(M.bind(this))(e,s)],[z.LEAST_BUSY,new(P.bind(this))(e,s)],[z.LEAST_ELU,new(q.bind(this))(e,s)],[z.FAIR_SHARE,new(Q.bind(this))(e,s)],[z.WEIGHTED_ROUND_ROBIN,new(U.bind(this))(e,s)],[z.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(K.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e&&this.retriesCount<this.opts.retries)return this.retriesCount++,this.execute();if(null==e)throw new Error(`Worker node key chosen is null or undefined after ${this.retriesCount} retries`);return this.retriesCount=0,e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){this.opts={...p,...e};for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class D extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new D(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class L{data;next;prev;constructor(e){this.data=e}}class V{head;tail;size;maxSize;constructor(){this.clear()}push(e){const t=new L(e);return null==this.tail?this.head=this.tail=t:(t.prev=this.tail,this.tail=this.tail.next=t),this.incrementSize()}unshift(e){const t=new L(e);return null==this.head?this.head=this.tail=t:(t.next=this.head,this.head=this.head.prev=t),this.incrementSize()}pop(){if(null==this.head)return;const e=this.tail;return this.tail=this.tail.prev,null==this.tail?this.head=void 0:this.tail.next=void 0,--this.size,e?.data}shift(){if(null==this.head)return;const e=this.head;return this.head=this.head.next,null==this.head?this.tail=void 0:this.head.prev=void 0,--this.size,e?.data}peekFirst(){return this.head?.data}peekLast(){return this.tail?.data}clear(){this.head=void 0,this.tail=void 0,this.size=0,this.maxSize=0}[Symbol.iterator](){let e=this.head;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.next,t}}}backward(){return{[Symbol.iterator]:()=>{let e=this.tail;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.prev,t}}}}}incrementSize(){return++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}}class _{worker;info;usage;strategyData;messageChannel;tasksQueueBackPressureSize;onBackPressure;onEmptyQueue;tasksQueue;onEmptyQueueCount;taskFunctionsUsage;constructor(e,s){this.checkWorkerNodeArguments(e,s),this.worker=e,this.info=this.initWorkerInfo(e),this.usage=this.initWorkerUsage(),this.info.type===l.thread&&(this.messageChannel=new t.MessageChannel),this.tasksQueueBackPressureSize=s,this.tasksQueue=new V,this.onEmptyQueueCount=0,this.taskFunctionsUsage=new Map}tasksQueueSize(){return this.tasksQueue.size}enqueueTask(e){const t=this.tasksQueue.push(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}unshiftTask(e){const t=this.tasksQueue.unshift(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}dequeueTask(){const e=this.tasksQueue.shift();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}popTask(){const e=this.tasksQueue.pop();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}clearTasksQueue(){this.tasksQueue.clear()}hasBackPressure(){return this.tasksQueue.size>=this.tasksQueueBackPressureSize}resetUsage(){this.usage=this.initWorkerUsage(),this.taskFunctionsUsage.clear()}closeChannel(){null!=this.messageChannel&&(this.messageChannel?.port1.unref(),this.messageChannel?.port2.unref(),this.messageChannel?.port1.close(),this.messageChannel?.port2.close(),delete this.messageChannel)}getTaskFunctionWorkerUsage(e){if(!Array.isArray(this.info.taskFunctions))throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list is not yet defined`);if(Array.isArray(this.info.taskFunctions)&&this.info.taskFunctions.length<3)throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list has less than 3 elements`);return e===g&&(e=this.info.taskFunctions[1]),this.taskFunctionsUsage.has(e)||this.taskFunctionsUsage.set(e,this.initTaskFunctionWorkerUsage(e)),this.taskFunctionsUsage.get(e)}async startOnEmptyQueue(){this.onEmptyQueueCount>0&&(this.usage.tasks.executing>0||this.tasksQueue.size>0)?this.onEmptyQueueCount=0:(this.onEmptyQueue(this.info.id),++this.onEmptyQueueCount,await(async e=>{await new Promise((t=>{setTimeout(t,e)}))})(((e=0,t=100)=>{const s=Math.pow(2,e)*t;return s+.2*s*I()})(this.onEmptyQueueCount)),await this.startOnEmptyQueue())}initWorkerInfo(e){return{id:T(e),type:y(e),dynamic:!1,ready:!1}}initWorkerUsage(){const e=()=>this.tasksQueue.size,t=()=>this.tasksQueue.maxSize;return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}initTaskFunctionWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)(s.name===g&&e===this.info.taskFunctions[1]||s.name!==g&&e===s.name)&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}checkWorkerNodeArguments(e,t){if(null==e)throw new TypeError("Cannot construct a worker node without a worker");if(null==t)throw new TypeError("Cannot construct a worker node without a tasks queue back pressure size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot construct a worker node with a tasks queue back pressure size that is not an integer");if(t<=0)throw new RangeError("Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer")}}class j{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;max;starting;started;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker with the same type as the pool");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),!0===this.opts.enableEvents&&(this.emitter=new d),this.workerChoiceStrategyContext=new B(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.started=!0,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new TypeError("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!x(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??z.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions={...p,...e.workerChoiceStrategyOptions},this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(z).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!x(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.retries&&!Number.isSafeInteger(e.retries))throw new TypeError("Invalid worker choice strategy options: retries must be an integer");if(null!=e.retries&&e.retries<0)throw new RangeError(`Invalid worker choice strategy options: retries '${e.retries}' must be greater or equal than zero`);if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(O).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!x(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e?.concurrency))throw new TypeError("Invalid worker node tasks concurrency: must be an integer");if(null!=e?.concurrency&&e?.concurrency<=0)throw new RangeError(`Invalid worker node tasks concurrency: ${e?.concurrency} is a negative integer or zero`);if(null!=e?.queueMaxSize)throw new Error("Invalid tasks queue options: queueMaxSize is deprecated, please use size instead");if(null!=e?.size&&!Number.isSafeInteger(e?.size))throw new TypeError("Invalid worker node tasks queue size: must be an integer");if(null!=e?.size&&e?.size<=0)throw new RangeError(`Invalid worker node tasks queue size: ${e?.size} is a negative integer or zero`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.43",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:N(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},...!0===this.opts.enableTasksQueue&&{backPressure:this.hasBackPressure()},...!0===this.opts.enableTasksQueue&&{stolenTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.stolen),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}get minSize(){return this.numberOfWorkers}get maxSize(){return this.max??this.numberOfWorkers}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Worker message received without worker id");if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions={...p,...e},this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e),this.setTasksQueueSize(this.opts.tasksQueueOptions.size)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}setTasksQueueSize(e){for(const t of this.workerNodes)t.tasksQueueBackPressureSize=e}buildTasksQueueOptions(e){return{size:Math.pow(this.maxSize,2),concurrency:1,...e}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}listTaskFunctions(){for(const e of this.workerNodes)if(Array.isArray(e.info.taskFunctions)&&e.info.taskFunctions.length>0)return e.info.taskFunctions;return[]}shallExecuteTask(e){return 0===this.tasksQueueSize(e)&&this.workerNodes[e].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency}async execute(e,t,s){return await new Promise(((o,a)=>{if(!this.started)return void a(new Error("Cannot execute a task on destroyed pool"));if(null!=t&&"string"!=typeof t)return void a(new TypeError("name argument must be a string"));if(null!=t&&"string"==typeof t&&0===t.trim().length)return void a(new TypeError("name argument must not be an empty string"));if(null!=s&&!Array.isArray(s))return void a(new TypeError("transferList argument must be an array"));const n=i.performance.now(),u=this.chooseWorkerNode(),h=this.getWorkerInfo(u),k={name:t??g,data:e??{},transferList:s,timestamp:n,workerId:h.id,taskId:r.randomUUID()};this.promiseResponseMap.set(k.taskId,{resolve:o,reject:a,workerNodeKey:u}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.shallExecuteTask(u)?this.executeTask(u,k):this.enqueueTask(u,k)}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)}))),this.emitter?.emit(c.destroy,this.info),this.started=!1}async sendKillMessageToWorker(e,t){await new Promise(((s,r)=>{this.registerWorkerMessageListener(e,(e=>{"success"===e.kill?s():"failure"===e.kill&&r(new Error(`Worker ${t} kill message handling failed`))})),this.sendToWorker(e,{kill:!0,workerId:t})}))}setupHook(){}beforeTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name);++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}}afterTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name);this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}}shallUpdateTaskFunctionWorkerUsage(e){const t=this.getWorkerInfo(e);return null!=t&&Array.isArray(t.taskFunctions)&&t.taskFunctions.length>2}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;null!=s.executing&&s.executing>0&&--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){null==t.taskError&&v(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);v(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r)}updateEluWorkerUsage(e,t){if(null!=t.taskError)return;const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;v(e.elu.active,s,t.taskPerformance?.elu?.active??0),v(e.elu.idle,s,t.taskPerformance?.elu?.idle??0),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("online",this.opts.onlineHandler??m),e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(c.error,t),!0===this.opts.restartWorkerOnError&&!this.starting&&this.started&&(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;(S(R.HARD,e.kill)||S(R.SOFT,e.kill)&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch((e=>{this.emitter?.emit(c.error,e)}))}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady||this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)&&(t.ready=!0),this.checkAndEmitDynamicWorkerCreationEvents(),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendStatisticsMessageToWorker(e),!0===this.opts.enableTasksQueue&&(this.workerNodes[e].onEmptyQueue=this.taskStealingOnEmptyQueue.bind(this),this.workerNodes[e].onBackPressure=this.tasksStealingOnBackPressure.bind(this))}sendStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){const t=this.workerNodes.reduce(((e,t,s,r)=>t.info.ready&&t.usage.tasks.queued<r[e].usage.tasks.queued?s:e),0),s=this.workerNodes[t],r={...this.dequeueTask(e),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,r):this.enqueueTask(t,r)}}updateTaskStolenStatisticsWorkerUsage(e,t){const s=this.workerNodes[e];if(null!=s?.usage&&++s.usage.tasks.stolen,this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=s.getTaskFunctionWorkerUsage(t)){++s.getTaskFunctionWorkerUsage(t).tasks.stolen}}taskStealingOnEmptyQueue(e){const t=this.getWorkerNodeKeyByWorkerId(e),s=this.workerNodes[t],r=this.workerNodes.slice().sort(((e,t)=>t.usage.tasks.queued-e.usage.tasks.queued)).find((t=>t.info.ready&&t.info.id!==e&&t.usage.tasks.queued>0));if(null!=r){const e={...r.popTask(),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,e):this.enqueueTask(t,e),this.updateTaskStolenStatisticsWorkerUsage(t,e.name)}}tasksStealingOnBackPressure(e){if(this.opts.tasksQueueOptions?.size<=1)return;const t=this.workerNodes[this.getWorkerNodeKeyByWorkerId(e)],s=this.workerNodes.slice().sort(((e,t)=>e.usage.tasks.queued-t.usage.tasks.queued));for(const[r,i]of s.entries())if(t.usage.tasks.queued>0&&i.info.ready&&i.info.id!==e&&i.usage.tasks.queued<this.opts.tasksQueueOptions?.size-1){const e={...t.popTask(),workerId:i.info.id};this.shallExecuteTask(r)?this.executeTask(r,e):this.enqueueTask(r,e),this.updateTaskStolenStatisticsWorkerUsage(r,e.name)}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready&&null!=e.taskFunctions?this.handleWorkerReadyResponse(e):null!=e.taskId?this.handleTaskExecutionResponse(e):null!=e.taskFunctions&&(this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).taskFunctions=e.taskFunctions)}}handleWorkerReadyResponse(e){if(!1===e.ready)throw new Error(`Worker ${e.workerId} failed to initialize`);const t=this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId));t.ready=e.ready,t.taskFunctions=e.taskFunctions,null!=this.emitter&&this.ready&&this.emitter.emit(c.ready,this.info)}handleTaskExecutionResponse(e){const{taskId:t,taskError:s,data:r}=e,i=this.promiseResponseMap.get(t);if(null!=i){null!=s?(this.emitter?.emit(c.taskError,s),i.reject(s.message)):i.resolve(r);const o=i.workerNodeKey;this.afterTaskExecutionHook(o,e),this.workerChoiceStrategyContext.update(o),this.promiseResponseMap.delete(t),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(o)>0&&this.workerNodes[o].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(o,this.dequeueTask(o))}}checkAndEmitTaskExecutionEvents(){this.busy&&this.emitter?.emit(c.busy,this.info)}checkAndEmitTaskQueuingEvents(){this.hasBackPressure()&&this.emitter?.emit(c.backPressure,this.info)}checkAndEmitDynamicWorkerCreationEvents(){this.type===k.dynamic&&this.full&&this.emitter?.emit(c.full,this.info)}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new _(e,this.opts.tasksQueueOptions?.size??Math.pow(this.maxSize,2));this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker added not found in worker nodes");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}hasWorkerNodeBackPressure(e){return!0===this.opts.enableTasksQueue&&this.workerNodes[e].hasBackPressure()}hasBackPressure(){return!0===this.opts.enableTasksQueue&&-1===this.workerNodes.findIndex((e=>!e.hasBackPressure()))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList),this.checkAndEmitTaskExecutionEvents()}enqueueTask(e,t){const s=this.workerNodes[e].enqueueTask(t);return this.checkAndEmitTaskQueuingEvents(),s}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class H extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));s.on("disconnect",(()=>{s.kill()})),await this.sendKillMessageToWorker(e,t.info.id),s.disconnect(),await r}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].info.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return l.cluster}get busy(){return this.internalBusy()}}class $ extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));await this.sendKillMessageToWorker(e,t.info.id),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.workerNodes[e].messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e],s=t.worker,r=t.messageChannel.port2;s.postMessage({ready:!1,workerId:t.info.id,port:r},[r])}registerWorkerMessageListener(e,t){this.workerNodes[e].messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return l.thread}get busy(){return this.internalBusy()}}const G=6e4,Y={killBehavior:R.SOFT,maxInactiveTime:G,killHandler:m};class J extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i=Y){if(super(e),this.isMain=t,this.mainWorker=s,this.opts=i,null==this.isMain)throw new Error("isMain parameter is mandatory");this.checkTaskFunctions(r),this.checkWorkerOptions(this.opts),this.isMain||this.getMainWorker().on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts={...Y,...e},delete this.opts.async}checkValidTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("A taskFunctions parameter object key is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("A taskFunctions parameter object key is an empty string");if("function"!=typeof t)throw new TypeError("A taskFunctions parameter object value is not a function")}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(g,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!x(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){this.checkValidTaskFunction(s,r);const e=r.bind(this);t&&(this.taskFunctions.set(g,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){return this.checkTaskFunctionName(e),this.taskFunctions.has(e)}addTaskFunction(e,t){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(g)&&this.taskFunctions.set(g,s),this.taskFunctions.set(e,s),this.sendTaskFunctionsListToMainWorker(),!0}catch{return!1}}removeTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(g))throw new Error("Cannot remove the task function used as the default task function");const t=this.taskFunctions.delete(e);return this.sendTaskFunctionsListToMainWorker(),t}listTaskFunctions(){const e=[...this.taskFunctions.keys()];let t=g;for(const[e,s]of this.taskFunctions)if(e!==g&&s===this.taskFunctions.get(g)){t=e;break}return[e[e.indexOf(g)],t,...e.filter((e=>e!==g&&e!==t))]}setDefaultTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(g,this.taskFunctions.get(e)),!0}catch{return!1}}checkTaskFunctionName(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("name parameter is an empty string")}messageListener(e){this.checkMessageWorkerId(e),null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e)}handleKillMessage(e){if(this.stopCheckActive(),E(this.opts.killHandler))(this.opts.killHandler?.()).then((()=>(this.sendToMainWorker({kill:"success",workerId:this.id}),null))).catch((()=>{this.sendToMainWorker({kill:"failure",workerId:this.id})})).finally((()=>{this.emitDestroy()})).catch(m);else try{this.opts.killHandler?.(),this.sendToMainWorker({kill:"success",workerId:this.id})}catch{this.sendToMainWorker({kill:"failure",workerId:this.id})}finally{this.emitDestroy()}}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Message worker id is not set");if(null!=e.workerId&&e.workerId!==this.id)throw new Error(`Message worker id ${e.workerId} does not match the worker id ${this.id}`)}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??G)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??G)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}sendTaskFunctionsListToMainWorker(){this.sendToMainWorker({taskFunctions:this.listTaskFunctions(),workerId:this.id})}handleError(e){return e instanceof Error?e.message:e}run(e){const{name:t,taskId:s,data:r}=e,i=this.taskFunctions.get(t??g);null!=i?E(i)?this.runInAsyncScope(this.runAsync.bind(this),this,i,e):this.runInAsyncScope(this.runSync.bind(this),this,i,e):this.sendToMainWorker({taskError:{name:t,message:`Task function '${t}' not found`,data:r},workerId:this.id,taskId:s})}runSync(e,t){const{name:s,taskId:r,data:i}=t;try{let t=this.beginTaskPerformance(s);const o=e(i);t=this.endTaskPerformance(t),this.sendToMainWorker({data:o,taskPerformance:t,workerId:this.id,taskId:r})}catch(e){const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){const{name:s,taskId:r,data:i}=t;let o=this.beginTaskPerformance(s);e(i).then((e=>(o=this.endTaskPerformance(o),this.sendToMainWorker({data:e,taskPerformance:o,workerId:this.id,taskId:r}),null))).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}beginTaskPerformance(e){return this.checkStatistics(),{name:e??g,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){null!=this.activeInterval&&(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends J{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready)try{this.getMainWorker().on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends H{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends ${max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=H,exports.FixedThreadPool=$,exports.KillBehaviors=R,exports.Measurements=O,exports.PoolEvents=c,exports.PoolTypes=k,exports.ThreadWorker=class extends J{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready&&null!=e.port)try{this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=z,exports.WorkerTypes=l,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),a=require("node:os"),n=require("node:async_hooks");function u(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var h=u(a);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class d extends e.EventEmitter{}const c=Object.freeze({ready:"ready",busy:"busy",full:"full",destroy:"destroy",error:"error",taskError:"taskError",backPressure:"backPressure"}),l=Object.freeze({thread:"thread",cluster:"cluster"}),g="default",m=Object.freeze((()=>{})),p={retries:6,runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},w={aggregate:!1,average:!1,median:!1},y=e=>e instanceof t.Worker?l.thread:e instanceof s.Worker?l.cluster:void 0,T=e=>e instanceof t.Worker?e.threadId:e instanceof s.Worker?e.id:void 0,f=e=>Array.isArray(e)&&0===e.length?0:Array.isArray(e)&&1===e.length?e[0]:e.reduce(((e,t)=>e+t),0)/e.length,W=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},N=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},x=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),S=(e,t)=>t===e,E=e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name,v=(e,t,s)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=b(s,e.minimum??1/0),e.maximum=C(s,e.maximum??-1/0),(t.average||t.median)&&null!=s&&(e.history.push(s),t.average?e.average=f(e.history):null!=e.average&&delete e.average,t.median?e.median=W(e.history):null!=e.median&&delete e.median))},I=()=>r.webcrypto.getRandomValues(new Uint32Array(1))[0]/4294967296,b=(...e)=>e.reduce(((e,t)=>e<t?e:t),1/0),C=(...e)=>e.reduce(((e,t)=>e>t?e:t),-1/0),R=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),z=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),O=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class F{pool;opts;nextWorkerNodeKey=0;previousWorkerNodeKey=0;strategyPolicy={dynamicWorkerUsage:!1,dynamicWorkerReady:!0};taskStatisticsRequirements={runTime:w,waitTime:w,elu:w};constructor(e,t=p){this.pool=e,this.opts=t,this.opts={...p,...t},this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}resetWorkerNodeKeyProperties(){this.nextWorkerNodeKey=0,this.previousWorkerNodeKey=0}setOptions(e){this.opts={...p,...e},this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}hasWorkerNodeBackPressure(e){return this.pool.hasWorkerNodeBackPressure(e)}isWorkerNodeEligible(e){return this.isWorkerNodeReady(e)&&!this.hasWorkerNodeBackPressure(e)}getWorkerNodeTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime.median??0:this.pool.workerNodes[e].usage.runTime.average??0}getWorkerNodeTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime.median??0:this.pool.workerNodes[e].usage.waitTime.average??0}getWorkerNodeTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active.median??0:this.pool.workerNodes[e].usage.elu.active.average??0}setPreviousWorkerNodeKey(e){this.previousWorkerNodeKey=e??this.previousWorkerNodeKey}checkNextWorkerNodeEligibility(){this.isWorkerNodeEligible(this.nextWorkerNodeKey)||(this.nextWorkerNodeKey=void 0)}computeDefaultWorkerWeight(){let e=0;for(const t of a.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/a.cpus().length)}}class Q extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:{aggregate:!0,average:!0,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){for(const e of this.pool.workerNodes)delete e.strategyData?.virtualTaskEndTimestamp;return!0}update(e){return this.pool.workerNodes[e].strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(e)},!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.fairShareNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}fairShareNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(null==t.strategyData?.virtualTaskEndTimestamp&&(t.strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(s)}),t.strategyData.virtualTaskEndTimestamp<r[e].strategyData.virtualTaskEndTimestamp?s:e)),0)}computeWorkerNodeVirtualTaskEndTimestamp(e){return this.getWorkerNodeVirtualTaskEndTimestamp(e,this.getWorkerNodeVirtualTaskStartTimestamp(e))}getWorkerNodeVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===O.elu?this.getWorkerNodeTaskElu(e):this.getWorkerNodeTaskRunTime(e))}getWorkerNodeVirtualTaskStartTimestamp(e){const t=this.pool.workerNodes[e]?.strategyData?.virtualTaskEndTimestamp,s=performance.now();return s<(t??-1/0)?t:s}}class K extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};roundId=0;defaultWorkerWeight;roundWeights;workerNodeId=0;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.resetWorkerNodeKeyProperties(),this.roundId=0,this.workerNodeId=0,this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){for(let e=this.roundId;e<this.roundWeights.length;e++){this.roundId=e;for(let t=this.workerNodeId;t<this.pool.workerNodes.length;t++){this.workerNodeId=t,this.workerNodeId!==this.nextWorkerNodeKey&&0!==this.workerNodeVirtualTaskRunTime&&(this.workerNodeVirtualTaskRunTime=0);const s=this.opts.weights?.[t]??this.defaultWorkerWeight;if(s>=this.roundWeights[e]&&this.workerNodeVirtualTaskRunTime<s)return this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(t),this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=t,this.nextWorkerNodeKey}}this.interleavedWeightedRoundRobinNextWorkerNodeId()}interleavedWeightedRoundRobinNextWorkerNodeId(){this.roundId===this.roundWeights.length-1&&this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=0,this.workerNodeId=0):this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=this.roundId+1,this.workerNodeId=0):this.workerNodeId=this.workerNodeId+1}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.workerNodeId===e&&this.workerNodeId>this.pool.workerNodes.length-1&&(this.workerNodeId=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class P extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:w};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastBusyNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastBusyNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.runTime.aggregate??0)+(t.usage.waitTime.aggregate??0)<(r[e].usage.runTime.aggregate??0)+(r[e].usage.waitTime.aggregate??0)?s:e),0)}}class M extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastUsedNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastUsedNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>t.usage.tasks.executed+t.usage.tasks.executing+t.usage.tasks.queued<r[e].usage.tasks.executed+r[e].usage.tasks.executing+r[e].usage.tasks.queued?s:e),0)}}class q extends F{taskStatisticsRequirements={runTime:w,waitTime:w,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastEluNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastEluNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.elu.active.aggregate??0)<(r[e].usage.elu.active.aggregate??0)?s:e),0)}}class A extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.resetWorkerNodeKeyProperties(),!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;return this.setPreviousWorkerNodeKey(e),this.roundRobinNextWorkerNodeKey(),e}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.nextWorkerNodeKey}}class U extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};defaultWorkerWeight;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.resetWorkerNodeKeyProperties(),this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.weightedRoundRobinNextWorkerNodeKey()}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&(this.workerNodeVirtualTaskRunTime=0,this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.opts.weights?.[this.nextWorkerNodeKey??this.previousWorkerNodeKey]??this.defaultWorkerWeight;return this.workerNodeVirtualTaskRunTime<e?this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(this.nextWorkerNodeKey??this.previousWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.workerNodeVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class B{workerChoiceStrategy;opts;workerChoiceStrategies;retriesCount=0;constructor(e,t=z.ROUND_ROBIN,s=p){this.workerChoiceStrategy=t,this.opts=s,this.opts={...p,...s},this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[z.ROUND_ROBIN,new(A.bind(this))(e,s)],[z.LEAST_USED,new(M.bind(this))(e,s)],[z.LEAST_BUSY,new(P.bind(this))(e,s)],[z.LEAST_ELU,new(q.bind(this))(e,s)],[z.FAIR_SHARE,new(Q.bind(this))(e,s)],[z.WEIGHTED_ROUND_ROBIN,new(U.bind(this))(e,s)],[z.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(K.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e&&this.retriesCount<this.opts.retries)return this.retriesCount++,this.execute();if(null==e)throw new Error(`Worker node key chosen is null or undefined after ${this.retriesCount} retries`);return this.retriesCount=0,e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){this.opts={...p,...e};for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class D extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new D(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class L{data;next;prev;constructor(e){this.data=e}}class V{head;tail;size;maxSize;constructor(){this.clear()}push(e){const t=new L(e);return null==this.tail?this.head=this.tail=t:(t.prev=this.tail,this.tail=this.tail.next=t),this.incrementSize()}unshift(e){const t=new L(e);return null==this.head?this.head=this.tail=t:(t.next=this.head,this.head=this.head.prev=t),this.incrementSize()}pop(){if(null==this.head)return;const e=this.tail;return this.tail=this.tail.prev,null==this.tail?this.head=void 0:this.tail.next=void 0,--this.size,e?.data}shift(){if(null==this.head)return;const e=this.head;return this.head=this.head.next,null==this.head?this.tail=void 0:this.head.prev=void 0,--this.size,e?.data}peekFirst(){return this.head?.data}peekLast(){return this.tail?.data}clear(){this.head=void 0,this.tail=void 0,this.size=0,this.maxSize=0}[Symbol.iterator](){let e=this.head;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.next,t}}}backward(){return{[Symbol.iterator]:()=>{let e=this.tail;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.prev,t}}}}}incrementSize(){return++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}}class _{worker;info;usage;strategyData;messageChannel;tasksQueueBackPressureSize;onBackPressure;onEmptyQueue;tasksQueue;onEmptyQueueCount;taskFunctionsUsage;constructor(e,s){this.checkWorkerNodeArguments(e,s),this.worker=e,this.info=this.initWorkerInfo(e),this.usage=this.initWorkerUsage(),this.info.type===l.thread&&(this.messageChannel=new t.MessageChannel),this.tasksQueueBackPressureSize=s,this.tasksQueue=new V,this.onEmptyQueueCount=0,this.taskFunctionsUsage=new Map}tasksQueueSize(){return this.tasksQueue.size}enqueueTask(e){const t=this.tasksQueue.push(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}unshiftTask(e){const t=this.tasksQueue.unshift(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}dequeueTask(){const e=this.tasksQueue.shift();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}popTask(){const e=this.tasksQueue.pop();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}clearTasksQueue(){this.tasksQueue.clear()}hasBackPressure(){return this.tasksQueue.size>=this.tasksQueueBackPressureSize}resetUsage(){this.usage=this.initWorkerUsage(),this.taskFunctionsUsage.clear()}closeChannel(){null!=this.messageChannel&&(this.messageChannel?.port1.unref(),this.messageChannel?.port2.unref(),this.messageChannel?.port1.close(),this.messageChannel?.port2.close(),delete this.messageChannel)}getTaskFunctionWorkerUsage(e){if(!Array.isArray(this.info.taskFunctions))throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list is not yet defined`);if(Array.isArray(this.info.taskFunctions)&&this.info.taskFunctions.length<3)throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list has less than 3 elements`);return e===g&&(e=this.info.taskFunctions[1]),this.taskFunctionsUsage.has(e)||this.taskFunctionsUsage.set(e,this.initTaskFunctionWorkerUsage(e)),this.taskFunctionsUsage.get(e)}async startOnEmptyQueue(){this.onEmptyQueueCount>0&&(this.usage.tasks.executing>0||this.tasksQueue.size>0)?this.onEmptyQueueCount=0:(this.onEmptyQueue(this.info.id),++this.onEmptyQueueCount,await(async e=>{await new Promise((t=>{setTimeout(t,e)}))})(((e=0,t=100)=>{const s=Math.pow(2,e)*t;return s+.2*s*I()})(this.onEmptyQueueCount)),await this.startOnEmptyQueue())}initWorkerInfo(e){return{id:T(e),type:y(e),dynamic:!1,ready:!1}}initWorkerUsage(){const e=()=>this.tasksQueue.size,t=()=>this.tasksQueue.maxSize;return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}initTaskFunctionWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)(s.name===g&&e===this.info.taskFunctions[1]||s.name!==g&&e===s.name)&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}checkWorkerNodeArguments(e,t){if(null==e)throw new TypeError("Cannot construct a worker node without a worker");if(null==t)throw new TypeError("Cannot construct a worker node without a tasks queue back pressure size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot construct a worker node with a tasks queue back pressure size that is not an integer");if(t<=0)throw new RangeError("Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer")}}class j{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;max;starting;started;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker with the same type as the pool");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),!0===this.opts.enableEvents&&(this.emitter=new d),this.workerChoiceStrategyContext=new B(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.started=!0,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new TypeError("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!x(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??z.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions={...p,...e.workerChoiceStrategyOptions},this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(z).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!x(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.retries&&!Number.isSafeInteger(e.retries))throw new TypeError("Invalid worker choice strategy options: retries must be an integer");if(null!=e.retries&&e.retries<0)throw new RangeError(`Invalid worker choice strategy options: retries '${e.retries}' must be greater or equal than zero`);if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(O).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!x(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e?.concurrency))throw new TypeError("Invalid worker node tasks concurrency: must be an integer");if(null!=e?.concurrency&&e?.concurrency<=0)throw new RangeError(`Invalid worker node tasks concurrency: ${e?.concurrency} is a negative integer or zero`);if(null!=e?.queueMaxSize)throw new Error("Invalid tasks queue options: queueMaxSize is deprecated, please use size instead");if(null!=e?.size&&!Number.isSafeInteger(e?.size))throw new TypeError("Invalid worker node tasks queue size: must be an integer");if(null!=e?.size&&e?.size<=0)throw new RangeError(`Invalid worker node tasks queue size: ${e?.size} is a negative integer or zero`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.44",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:N(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},...!0===this.opts.enableTasksQueue&&{backPressure:this.hasBackPressure()},...!0===this.opts.enableTasksQueue&&{stolenTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.stolen),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}get minSize(){return this.numberOfWorkers}get maxSize(){return this.max??this.numberOfWorkers}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Worker message received without worker id");if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions={...p,...e},this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e),this.setTasksQueueSize(this.opts.tasksQueueOptions.size)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}setTasksQueueSize(e){for(const t of this.workerNodes)t.tasksQueueBackPressureSize=e}buildTasksQueueOptions(e){return{size:Math.pow(this.maxSize,2),concurrency:1,...e}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}listTaskFunctions(){for(const e of this.workerNodes)if(Array.isArray(e.info.taskFunctions)&&e.info.taskFunctions.length>0)return e.info.taskFunctions;return[]}shallExecuteTask(e){return 0===this.tasksQueueSize(e)&&this.workerNodes[e].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency}async execute(e,t,s){return await new Promise(((o,a)=>{if(!this.started)return void a(new Error("Cannot execute a task on destroyed pool"));if(null!=t&&"string"!=typeof t)return void a(new TypeError("name argument must be a string"));if(null!=t&&"string"==typeof t&&0===t.trim().length)return void a(new TypeError("name argument must not be an empty string"));if(null!=s&&!Array.isArray(s))return void a(new TypeError("transferList argument must be an array"));const n=i.performance.now(),u=this.chooseWorkerNode(),h=this.getWorkerInfo(u),k={name:t??g,data:e??{},transferList:s,timestamp:n,workerId:h.id,taskId:r.randomUUID()};this.promiseResponseMap.set(k.taskId,{resolve:o,reject:a,workerNodeKey:u}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.shallExecuteTask(u)?this.executeTask(u,k):this.enqueueTask(u,k)}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)}))),this.emitter?.emit(c.destroy,this.info),this.started=!1}async sendKillMessageToWorker(e,t){await new Promise(((s,r)=>{this.registerWorkerMessageListener(e,(e=>{"success"===e.kill?s():"failure"===e.kill&&r(new Error(`Worker ${t} kill message handling failed`))})),this.sendToWorker(e,{kill:!0,workerId:t})}))}setupHook(){}beforeTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name);++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}}afterTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name);this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}}shallUpdateTaskFunctionWorkerUsage(e){const t=this.getWorkerInfo(e);return null!=t&&Array.isArray(t.taskFunctions)&&t.taskFunctions.length>2}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;null!=s.executing&&s.executing>0&&--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){null==t.taskError&&v(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);v(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r)}updateEluWorkerUsage(e,t){if(null!=t.taskError)return;const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;v(e.elu.active,s,t.taskPerformance?.elu?.active??0),v(e.elu.idle,s,t.taskPerformance?.elu?.idle??0),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("online",this.opts.onlineHandler??m),e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(c.error,t),!0===this.opts.restartWorkerOnError&&!this.starting&&this.started&&(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;(S(R.HARD,e.kill)||S(R.SOFT,e.kill)&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch((e=>{this.emitter?.emit(c.error,e)}))}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady||this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)&&(t.ready=!0),this.checkAndEmitDynamicWorkerCreationEvents(),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendStatisticsMessageToWorker(e),!0===this.opts.enableTasksQueue&&(this.workerNodes[e].onEmptyQueue=this.taskStealingOnEmptyQueue.bind(this),this.workerNodes[e].onBackPressure=this.tasksStealingOnBackPressure.bind(this))}sendStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){const t=this.workerNodes.reduce(((e,t,s,r)=>t.info.ready&&t.usage.tasks.queued<r[e].usage.tasks.queued?s:e),0),s=this.workerNodes[t],r={...this.dequeueTask(e),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,r):this.enqueueTask(t,r)}}updateTaskStolenStatisticsWorkerUsage(e,t){const s=this.workerNodes[e];if(null!=s?.usage&&++s.usage.tasks.stolen,this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=s.getTaskFunctionWorkerUsage(t)){++s.getTaskFunctionWorkerUsage(t).tasks.stolen}}taskStealingOnEmptyQueue(e){const t=this.getWorkerNodeKeyByWorkerId(e),s=this.workerNodes[t],r=this.workerNodes.slice().sort(((e,t)=>t.usage.tasks.queued-e.usage.tasks.queued)).find((t=>t.info.ready&&t.info.id!==e&&t.usage.tasks.queued>0));if(null!=r){const e={...r.popTask(),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,e):this.enqueueTask(t,e),this.updateTaskStolenStatisticsWorkerUsage(t,e.name)}}tasksStealingOnBackPressure(e){if(this.opts.tasksQueueOptions?.size<=1)return;const t=this.workerNodes[this.getWorkerNodeKeyByWorkerId(e)],s=this.workerNodes.slice().sort(((e,t)=>e.usage.tasks.queued-t.usage.tasks.queued));for(const[r,i]of s.entries())if(t.usage.tasks.queued>0&&i.info.ready&&i.info.id!==e&&i.usage.tasks.queued<this.opts.tasksQueueOptions?.size-1){const e={...t.popTask(),workerId:i.info.id};this.shallExecuteTask(r)?this.executeTask(r,e):this.enqueueTask(r,e),this.updateTaskStolenStatisticsWorkerUsage(r,e.name)}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready&&null!=e.taskFunctions?this.handleWorkerReadyResponse(e):null!=e.taskId?this.handleTaskExecutionResponse(e):null!=e.taskFunctions&&(this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).taskFunctions=e.taskFunctions)}}handleWorkerReadyResponse(e){if(!1===e.ready)throw new Error(`Worker ${e.workerId} failed to initialize`);const t=this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId));t.ready=e.ready,t.taskFunctions=e.taskFunctions,null!=this.emitter&&this.ready&&this.emitter.emit(c.ready,this.info)}handleTaskExecutionResponse(e){const{taskId:t,taskError:s,data:r}=e,i=this.promiseResponseMap.get(t);if(null!=i){null!=s?(this.emitter?.emit(c.taskError,s),i.reject(s.message)):i.resolve(r);const o=i.workerNodeKey;this.afterTaskExecutionHook(o,e),this.workerChoiceStrategyContext.update(o),this.promiseResponseMap.delete(t),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(o)>0&&this.workerNodes[o].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(o,this.dequeueTask(o))}}checkAndEmitTaskExecutionEvents(){this.busy&&this.emitter?.emit(c.busy,this.info)}checkAndEmitTaskQueuingEvents(){this.hasBackPressure()&&this.emitter?.emit(c.backPressure,this.info)}checkAndEmitDynamicWorkerCreationEvents(){this.type===k.dynamic&&this.full&&this.emitter?.emit(c.full,this.info)}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new _(e,this.opts.tasksQueueOptions?.size??Math.pow(this.maxSize,2));this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker added not found in worker nodes");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}hasWorkerNodeBackPressure(e){return!0===this.opts.enableTasksQueue&&this.workerNodes[e].hasBackPressure()}hasBackPressure(){return!0===this.opts.enableTasksQueue&&-1===this.workerNodes.findIndex((e=>!e.hasBackPressure()))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList),this.checkAndEmitTaskExecutionEvents()}enqueueTask(e,t){const s=this.workerNodes[e].enqueueTask(t);return this.checkAndEmitTaskQueuingEvents(),s}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class H extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));s.on("disconnect",(()=>{s.kill()})),await this.sendKillMessageToWorker(e,t.info.id),s.disconnect(),await r}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].info.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return l.cluster}get busy(){return this.internalBusy()}}class $ extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));await this.sendKillMessageToWorker(e,t.info.id),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.workerNodes[e].messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e],s=t.worker,r=t.messageChannel.port2;s.postMessage({ready:!1,workerId:t.info.id,port:r},[r])}registerWorkerMessageListener(e,t){this.workerNodes[e].messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return l.thread}get busy(){return this.internalBusy()}}const G=6e4,Y={killBehavior:R.SOFT,maxInactiveTime:G,killHandler:m};class J extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i=Y){if(super(e),this.isMain=t,this.mainWorker=s,this.opts=i,null==this.isMain)throw new Error("isMain parameter is mandatory");this.checkTaskFunctions(r),this.checkWorkerOptions(this.opts),this.isMain||this.getMainWorker().on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts={...Y,...e},delete this.opts.async}checkValidTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("A taskFunctions parameter object key is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("A taskFunctions parameter object key is an empty string");if("function"!=typeof t)throw new TypeError("A taskFunctions parameter object value is not a function")}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(g,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!x(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){this.checkValidTaskFunction(s,r);const e=r.bind(this);t&&(this.taskFunctions.set(g,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){return this.checkTaskFunctionName(e),this.taskFunctions.has(e)}addTaskFunction(e,t){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(g)&&this.taskFunctions.set(g,s),this.taskFunctions.set(e,s),this.sendTaskFunctionsListToMainWorker(),!0}catch{return!1}}removeTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(g))throw new Error("Cannot remove the task function used as the default task function");const t=this.taskFunctions.delete(e);return this.sendTaskFunctionsListToMainWorker(),t}listTaskFunctions(){const e=[...this.taskFunctions.keys()];let t=g;for(const[e,s]of this.taskFunctions)if(e!==g&&s===this.taskFunctions.get(g)){t=e;break}return[e[e.indexOf(g)],t,...e.filter((e=>e!==g&&e!==t))]}setDefaultTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(g,this.taskFunctions.get(e)),!0}catch{return!1}}checkTaskFunctionName(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("name parameter is an empty string")}messageListener(e){this.checkMessageWorkerId(e),null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e)}handleKillMessage(e){if(this.stopCheckActive(),E(this.opts.killHandler))(this.opts.killHandler?.()).then((()=>(this.sendToMainWorker({kill:"success",workerId:this.id}),null))).catch((()=>{this.sendToMainWorker({kill:"failure",workerId:this.id})})).finally((()=>{this.emitDestroy()})).catch(m);else try{this.opts.killHandler?.(),this.sendToMainWorker({kill:"success",workerId:this.id})}catch{this.sendToMainWorker({kill:"failure",workerId:this.id})}finally{this.emitDestroy()}}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Message worker id is not set");if(null!=e.workerId&&e.workerId!==this.id)throw new Error(`Message worker id ${e.workerId} does not match the worker id ${this.id}`)}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??G)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??G)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}sendTaskFunctionsListToMainWorker(){this.sendToMainWorker({taskFunctions:this.listTaskFunctions(),workerId:this.id})}handleError(e){return e instanceof Error?e.message:e}run(e){const{name:t,taskId:s,data:r}=e,i=this.taskFunctions.get(t??g);null!=i?E(i)?this.runInAsyncScope(this.runAsync.bind(this),this,i,e):this.runInAsyncScope(this.runSync.bind(this),this,i,e):this.sendToMainWorker({taskError:{name:t,message:`Task function '${t}' not found`,data:r},workerId:this.id,taskId:s})}runSync(e,t){const{name:s,taskId:r,data:i}=t;try{let t=this.beginTaskPerformance(s);const o=e(i);t=this.endTaskPerformance(t),this.sendToMainWorker({data:o,taskPerformance:t,workerId:this.id,taskId:r})}catch(e){const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){const{name:s,taskId:r,data:i}=t;let o=this.beginTaskPerformance(s);e(i).then((e=>(o=this.endTaskPerformance(o),this.sendToMainWorker({data:e,taskPerformance:o,workerId:this.id,taskId:r}),null))).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}beginTaskPerformance(e){return this.checkStatistics(),{name:e??g,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){null!=this.activeInterval&&(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends J{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready)try{this.getMainWorker().on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends H{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends ${max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=H,exports.FixedThreadPool=$,exports.KillBehaviors=R,exports.Measurements=O,exports.PoolEvents=c,exports.PoolTypes=k,exports.ThreadWorker=class extends J{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready&&null!=e.port)try{this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=z,exports.WorkerTypes=l,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),a=require("node:os"),n=require("node:async_hooks");function u(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var h=u(a);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class d extends e.EventEmitter{}const c=Object.freeze({ready:"ready",busy:"busy",full:"full",destroy:"destroy",error:"error",taskError:"taskError",backPressure:"backPressure"}),l=Object.freeze({thread:"thread",cluster:"cluster"}),g="default",m=Object.freeze((()=>{})),p={retries:6,runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},w={aggregate:!1,average:!1,median:!1},y=e=>e instanceof t.Worker?l.thread:e instanceof s.Worker?l.cluster:void 0,T=e=>e instanceof t.Worker?e.threadId:e instanceof s.Worker?e.id:void 0,f=e=>Array.isArray(e)&&0===e.length?0:Array.isArray(e)&&1===e.length?e[0]:e.reduce(((e,t)=>e+t),0)/e.length,W=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},N=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},x=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),S=(e,t)=>t===e,E=e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name,v=(e,t,s)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=b(s,e.minimum??1/0),e.maximum=C(s,e.maximum??-1/0),(t.average||t.median)&&null!=s&&(e.history.push(s),t.average?e.average=f(e.history):null!=e.average&&delete e.average,t.median?e.median=W(e.history):null!=e.median&&delete e.median))},I=()=>r.webcrypto.getRandomValues(new Uint32Array(1))[0]/4294967296,b=(...e)=>e.reduce(((e,t)=>e<t?e:t),1/0),C=(...e)=>e.reduce(((e,t)=>e>t?e:t),-1/0),R=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),z=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),O=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class F{pool;opts;nextWorkerNodeKey=0;previousWorkerNodeKey=0;strategyPolicy={dynamicWorkerUsage:!1,dynamicWorkerReady:!0};taskStatisticsRequirements={runTime:w,waitTime:w,elu:w};constructor(e,t=p){this.pool=e,this.opts=t,this.opts={...p,...t},this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}resetWorkerNodeKeyProperties(){this.nextWorkerNodeKey=0,this.previousWorkerNodeKey=0}setOptions(e){this.opts={...p,...e},this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}hasWorkerNodeBackPressure(e){return this.pool.hasWorkerNodeBackPressure(e)}isWorkerNodeEligible(e){return this.isWorkerNodeReady(e)&&!this.hasWorkerNodeBackPressure(e)}getWorkerNodeTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime.median??0:this.pool.workerNodes[e].usage.runTime.average??0}getWorkerNodeTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime.median??0:this.pool.workerNodes[e].usage.waitTime.average??0}getWorkerNodeTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active.median??0:this.pool.workerNodes[e].usage.elu.active.average??0}setPreviousWorkerNodeKey(e){this.previousWorkerNodeKey=e??this.previousWorkerNodeKey}checkNextWorkerNodeEligibility(){this.isWorkerNodeEligible(this.nextWorkerNodeKey)||(this.nextWorkerNodeKey=void 0)}computeDefaultWorkerWeight(){let e=0;for(const t of a.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/a.cpus().length)}}class Q extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:{aggregate:!0,average:!0,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){for(const e of this.pool.workerNodes)delete e.strategyData?.virtualTaskEndTimestamp;return!0}update(e){return this.pool.workerNodes[e].strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(e)},!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.fairShareNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}fairShareNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(null==t.strategyData?.virtualTaskEndTimestamp&&(t.strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(s)}),t.strategyData.virtualTaskEndTimestamp<r[e].strategyData.virtualTaskEndTimestamp?s:e)),0)}computeWorkerNodeVirtualTaskEndTimestamp(e){return this.getWorkerNodeVirtualTaskEndTimestamp(e,this.getWorkerNodeVirtualTaskStartTimestamp(e))}getWorkerNodeVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===O.elu?this.getWorkerNodeTaskElu(e):this.getWorkerNodeTaskRunTime(e))}getWorkerNodeVirtualTaskStartTimestamp(e){const t=this.pool.workerNodes[e]?.strategyData?.virtualTaskEndTimestamp,s=performance.now();return s<(t??-1/0)?t:s}}class K extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};roundId=0;defaultWorkerWeight;roundWeights;workerNodeId=0;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.resetWorkerNodeKeyProperties(),this.roundId=0,this.workerNodeId=0,this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){for(let e=this.roundId;e<this.roundWeights.length;e++){this.roundId=e;for(let t=this.workerNodeId;t<this.pool.workerNodes.length;t++){this.workerNodeId=t,this.workerNodeId!==this.nextWorkerNodeKey&&0!==this.workerNodeVirtualTaskRunTime&&(this.workerNodeVirtualTaskRunTime=0);const s=this.opts.weights?.[t]??this.defaultWorkerWeight;if(s>=this.roundWeights[e]&&this.workerNodeVirtualTaskRunTime<s)return this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(t),this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=t,this.nextWorkerNodeKey}}this.interleavedWeightedRoundRobinNextWorkerNodeId()}interleavedWeightedRoundRobinNextWorkerNodeId(){this.roundId===this.roundWeights.length-1&&this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=0,this.workerNodeId=0):this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=this.roundId+1,this.workerNodeId=0):this.workerNodeId=this.workerNodeId+1}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.workerNodeId===e&&this.workerNodeId>this.pool.workerNodes.length-1&&(this.workerNodeId=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class P extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:w};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastBusyNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastBusyNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.runTime.aggregate??0)+(t.usage.waitTime.aggregate??0)<(r[e].usage.runTime.aggregate??0)+(r[e].usage.waitTime.aggregate??0)?s:e),0)}}class M extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastUsedNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastUsedNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>t.usage.tasks.executed+t.usage.tasks.executing+t.usage.tasks.queued<r[e].usage.tasks.executed+r[e].usage.tasks.executing+r[e].usage.tasks.queued?s:e),0)}}class q extends F{taskStatisticsRequirements={runTime:w,waitTime:w,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastEluNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastEluNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.elu.active.aggregate??0)<(r[e].usage.elu.active.aggregate??0)?s:e),0)}}class A extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.resetWorkerNodeKeyProperties(),!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;return this.setPreviousWorkerNodeKey(e),this.roundRobinNextWorkerNodeKey(),e}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.nextWorkerNodeKey}}class U extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};defaultWorkerWeight;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.resetWorkerNodeKeyProperties(),this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.weightedRoundRobinNextWorkerNodeKey()}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&(this.workerNodeVirtualTaskRunTime=0,this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.opts.weights?.[this.nextWorkerNodeKey??this.previousWorkerNodeKey]??this.defaultWorkerWeight;return this.workerNodeVirtualTaskRunTime<e?this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(this.nextWorkerNodeKey??this.previousWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.workerNodeVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class B{workerChoiceStrategy;opts;workerChoiceStrategies;retriesCount=0;constructor(e,t=z.ROUND_ROBIN,s=p){this.workerChoiceStrategy=t,this.opts=s,this.opts={...p,...s},this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[z.ROUND_ROBIN,new(A.bind(this))(e,s)],[z.LEAST_USED,new(M.bind(this))(e,s)],[z.LEAST_BUSY,new(P.bind(this))(e,s)],[z.LEAST_ELU,new(q.bind(this))(e,s)],[z.FAIR_SHARE,new(Q.bind(this))(e,s)],[z.WEIGHTED_ROUND_ROBIN,new(U.bind(this))(e,s)],[z.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(K.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e&&this.retriesCount<this.opts.retries)return this.retriesCount++,this.execute();if(null==e)throw new Error(`Worker node key chosen is null or undefined after ${this.retriesCount} retries`);return this.retriesCount=0,e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){this.opts={...p,...e};for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class D extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new D(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class L{data;next;prev;constructor(e){this.data=e}}class V{head;tail;size;maxSize;constructor(){this.clear()}push(e){const t=new L(e);return null==this.tail?this.head=this.tail=t:(t.prev=this.tail,this.tail=this.tail.next=t),this.incrementSize()}unshift(e){const t=new L(e);return null==this.head?this.head=this.tail=t:(t.next=this.head,this.head=this.head.prev=t),this.incrementSize()}pop(){if(null==this.head)return;const e=this.tail;return this.tail=this.tail.prev,null==this.tail?this.head=void 0:this.tail.next=void 0,--this.size,e?.data}shift(){if(null==this.head)return;const e=this.head;return this.head=this.head.next,null==this.head?this.tail=void 0:this.head.prev=void 0,--this.size,e?.data}peekFirst(){return this.head?.data}peekLast(){return this.tail?.data}clear(){this.head=void 0,this.tail=void 0,this.size=0,this.maxSize=0}[Symbol.iterator](){let e=this.head;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.next,t}}}backward(){return{[Symbol.iterator]:()=>{let e=this.tail;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.prev,t}}}}}incrementSize(){return++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}}class _{worker;info;usage;strategyData;messageChannel;tasksQueueBackPressureSize;onBackPressure;onEmptyQueue;tasksQueue;onEmptyQueueCount;taskFunctionsUsage;constructor(e,s){this.checkWorkerNodeArguments(e,s),this.worker=e,this.info=this.initWorkerInfo(e),this.usage=this.initWorkerUsage(),this.info.type===l.thread&&(this.messageChannel=new t.MessageChannel),this.tasksQueueBackPressureSize=s,this.tasksQueue=new V,this.onEmptyQueueCount=0,this.taskFunctionsUsage=new Map}tasksQueueSize(){return this.tasksQueue.size}enqueueTask(e){const t=this.tasksQueue.push(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}unshiftTask(e){const t=this.tasksQueue.unshift(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}dequeueTask(){const e=this.tasksQueue.shift();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}popTask(){const e=this.tasksQueue.pop();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}clearTasksQueue(){this.tasksQueue.clear()}hasBackPressure(){return this.tasksQueue.size>=this.tasksQueueBackPressureSize}resetUsage(){this.usage=this.initWorkerUsage(),this.taskFunctionsUsage.clear()}closeChannel(){null!=this.messageChannel&&(this.messageChannel?.port1.unref(),this.messageChannel?.port2.unref(),this.messageChannel?.port1.close(),this.messageChannel?.port2.close(),delete this.messageChannel)}getTaskFunctionWorkerUsage(e){if(!Array.isArray(this.info.taskFunctions))throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list is not yet defined`);if(Array.isArray(this.info.taskFunctions)&&this.info.taskFunctions.length<3)throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list has less than 3 elements`);return e===g&&(e=this.info.taskFunctions[1]),this.taskFunctionsUsage.has(e)||this.taskFunctionsUsage.set(e,this.initTaskFunctionWorkerUsage(e)),this.taskFunctionsUsage.get(e)}async startOnEmptyQueue(){this.onEmptyQueueCount>0&&(this.usage.tasks.executing>0||this.tasksQueue.size>0)?this.onEmptyQueueCount=0:(this.onEmptyQueue(this.info.id),++this.onEmptyQueueCount,await(async e=>{await new Promise((t=>{setTimeout(t,e)}))})(((e=0,t=100)=>{const s=Math.pow(2,e)*t;return s+.2*s*I()})(this.onEmptyQueueCount)),await this.startOnEmptyQueue())}initWorkerInfo(e){return{id:T(e),type:y(e),dynamic:!1,ready:!1}}initWorkerUsage(){const e=()=>this.tasksQueue.size,t=()=>this.tasksQueue.maxSize;return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}initTaskFunctionWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)(s.name===g&&e===this.info.taskFunctions[1]||s.name!==g&&e===s.name)&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}checkWorkerNodeArguments(e,t){if(null==e)throw new TypeError("Cannot construct a worker node without a worker");if(null==t)throw new TypeError("Cannot construct a worker node without a tasks queue back pressure size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot construct a worker node with a tasks queue back pressure size that is not an integer");if(t<=0)throw new RangeError("Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer")}}class j{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;max;starting;started;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker with the same type as the pool");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),!0===this.opts.enableEvents&&(this.emitter=new d),this.workerChoiceStrategyContext=new B(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.started=!0,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new TypeError("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!x(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??z.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions={...p,...e.workerChoiceStrategyOptions},this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(z).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!x(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.retries&&!Number.isSafeInteger(e.retries))throw new TypeError("Invalid worker choice strategy options: retries must be an integer");if(null!=e.retries&&e.retries<0)throw new RangeError(`Invalid worker choice strategy options: retries '${e.retries}' must be greater or equal than zero`);if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(O).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!x(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e?.concurrency))throw new TypeError("Invalid worker node tasks concurrency: must be an integer");if(null!=e?.concurrency&&e?.concurrency<=0)throw new RangeError(`Invalid worker node tasks concurrency: ${e?.concurrency} is a negative integer or zero`);if(null!=e?.queueMaxSize)throw new Error("Invalid tasks queue options: queueMaxSize is deprecated, please use size instead");if(null!=e?.size&&!Number.isSafeInteger(e?.size))throw new TypeError("Invalid worker node tasks queue size: must be an integer");if(null!=e?.size&&e?.size<=0)throw new RangeError(`Invalid worker node tasks queue size: ${e?.size} is a negative integer or zero`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.43",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:N(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},...!0===this.opts.enableTasksQueue&&{backPressure:this.hasBackPressure()},...!0===this.opts.enableTasksQueue&&{stolenTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.stolen),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}get minSize(){return this.numberOfWorkers}get maxSize(){return this.max??this.numberOfWorkers}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Worker message received without worker id");if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions={...p,...e},this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e),this.setTasksQueueSize(this.opts.tasksQueueOptions.size)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}setTasksQueueSize(e){for(const t of this.workerNodes)t.tasksQueueBackPressureSize=e}buildTasksQueueOptions(e){return{size:Math.pow(this.maxSize,2),concurrency:1,...e}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}listTaskFunctions(){for(const e of this.workerNodes)if(Array.isArray(e.info.taskFunctions)&&e.info.taskFunctions.length>0)return e.info.taskFunctions;return[]}shallExecuteTask(e){return 0===this.tasksQueueSize(e)&&this.workerNodes[e].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency}async execute(e,t,s){return await new Promise(((o,a)=>{if(!this.started)return void a(new Error("Cannot execute a task on destroyed pool"));if(null!=t&&"string"!=typeof t)return void a(new TypeError("name argument must be a string"));if(null!=t&&"string"==typeof t&&0===t.trim().length)return void a(new TypeError("name argument must not be an empty string"));if(null!=s&&!Array.isArray(s))return void a(new TypeError("transferList argument must be an array"));const n=i.performance.now(),u=this.chooseWorkerNode(),h=this.getWorkerInfo(u),k={name:t??g,data:e??{},transferList:s,timestamp:n,workerId:h.id,taskId:r.randomUUID()};this.promiseResponseMap.set(k.taskId,{resolve:o,reject:a,workerNodeKey:u}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.shallExecuteTask(u)?this.executeTask(u,k):this.enqueueTask(u,k)}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)}))),this.emitter?.emit(c.destroy,this.info),this.started=!1}async sendKillMessageToWorker(e,t){await new Promise(((s,r)=>{this.registerWorkerMessageListener(e,(e=>{"success"===e.kill?s():"failure"===e.kill&&r(new Error(`Worker ${t} kill message handling failed`))})),this.sendToWorker(e,{kill:!0,workerId:t})}))}setupHook(){}beforeTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name);++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}}afterTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name);this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}}shallUpdateTaskFunctionWorkerUsage(e){const t=this.getWorkerInfo(e);return null!=t&&Array.isArray(t.taskFunctions)&&t.taskFunctions.length>2}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;null!=s.executing&&s.executing>0&&--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){null==t.taskError&&v(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);v(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r)}updateEluWorkerUsage(e,t){if(null!=t.taskError)return;const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;v(e.elu.active,s,t.taskPerformance?.elu?.active??0),v(e.elu.idle,s,t.taskPerformance?.elu?.idle??0),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("online",this.opts.onlineHandler??m),e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(c.error,t),!0===this.opts.restartWorkerOnError&&!this.starting&&this.started&&(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;(S(R.HARD,e.kill)||S(R.SOFT,e.kill)&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch((e=>{this.emitter?.emit(c.error,e)}))}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady||this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)&&(t.ready=!0),this.checkAndEmitDynamicWorkerCreationEvents(),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendStatisticsMessageToWorker(e),!0===this.opts.enableTasksQueue&&(this.workerNodes[e].onEmptyQueue=this.taskStealingOnEmptyQueue.bind(this),this.workerNodes[e].onBackPressure=this.tasksStealingOnBackPressure.bind(this))}sendStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){const t=this.workerNodes.reduce(((e,t,s,r)=>t.info.ready&&t.usage.tasks.queued<r[e].usage.tasks.queued?s:e),0),s=this.workerNodes[t],r={...this.dequeueTask(e),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,r):this.enqueueTask(t,r)}}updateTaskStolenStatisticsWorkerUsage(e,t){const s=this.workerNodes[e];if(null!=s?.usage&&++s.usage.tasks.stolen,this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=s.getTaskFunctionWorkerUsage(t)){++s.getTaskFunctionWorkerUsage(t).tasks.stolen}}taskStealingOnEmptyQueue(e){const t=this.getWorkerNodeKeyByWorkerId(e),s=this.workerNodes[t],r=this.workerNodes.slice().sort(((e,t)=>t.usage.tasks.queued-e.usage.tasks.queued)).find((t=>t.info.ready&&t.info.id!==e&&t.usage.tasks.queued>0));if(null!=r){const e={...r.popTask(),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,e):this.enqueueTask(t,e),this.updateTaskStolenStatisticsWorkerUsage(t,e.name)}}tasksStealingOnBackPressure(e){if(this.opts.tasksQueueOptions?.size<=1)return;const t=this.workerNodes[this.getWorkerNodeKeyByWorkerId(e)],s=this.workerNodes.slice().sort(((e,t)=>e.usage.tasks.queued-t.usage.tasks.queued));for(const[r,i]of s.entries())if(t.usage.tasks.queued>0&&i.info.ready&&i.info.id!==e&&i.usage.tasks.queued<this.opts.tasksQueueOptions?.size-1){const e={...t.popTask(),workerId:i.info.id};this.shallExecuteTask(r)?this.executeTask(r,e):this.enqueueTask(r,e),this.updateTaskStolenStatisticsWorkerUsage(r,e.name)}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready&&null!=e.taskFunctions?this.handleWorkerReadyResponse(e):null!=e.taskId?this.handleTaskExecutionResponse(e):null!=e.taskFunctions&&(this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).taskFunctions=e.taskFunctions)}}handleWorkerReadyResponse(e){if(!1===e.ready)throw new Error(`Worker ${e.workerId} failed to initialize`);const t=this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId));t.ready=e.ready,t.taskFunctions=e.taskFunctions,null!=this.emitter&&this.ready&&this.emitter.emit(c.ready,this.info)}handleTaskExecutionResponse(e){const{taskId:t,taskError:s,data:r}=e,i=this.promiseResponseMap.get(t);if(null!=i){null!=s?(this.emitter?.emit(c.taskError,s),i.reject(s.message)):i.resolve(r);const o=i.workerNodeKey;this.afterTaskExecutionHook(o,e),this.workerChoiceStrategyContext.update(o),this.promiseResponseMap.delete(t),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(o)>0&&this.workerNodes[o].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(o,this.dequeueTask(o))}}checkAndEmitTaskExecutionEvents(){this.busy&&this.emitter?.emit(c.busy,this.info)}checkAndEmitTaskQueuingEvents(){this.hasBackPressure()&&this.emitter?.emit(c.backPressure,this.info)}checkAndEmitDynamicWorkerCreationEvents(){this.type===k.dynamic&&this.full&&this.emitter?.emit(c.full,this.info)}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new _(e,this.opts.tasksQueueOptions?.size??Math.pow(this.maxSize,2));this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker added not found in worker nodes");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}hasWorkerNodeBackPressure(e){return!0===this.opts.enableTasksQueue&&this.workerNodes[e].hasBackPressure()}hasBackPressure(){return!0===this.opts.enableTasksQueue&&-1===this.workerNodes.findIndex((e=>!e.hasBackPressure()))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList),this.checkAndEmitTaskExecutionEvents()}enqueueTask(e,t){const s=this.workerNodes[e].enqueueTask(t);return this.checkAndEmitTaskQueuingEvents(),s}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class H extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));s.on("disconnect",(()=>{s.kill()})),await this.sendKillMessageToWorker(e,t.info.id),s.disconnect(),await r}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].info.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return l.cluster}get busy(){return this.internalBusy()}}class $ extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));await this.sendKillMessageToWorker(e,t.info.id),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.workerNodes[e].messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e],s=t.worker,r=t.messageChannel.port2;s.postMessage({ready:!1,workerId:t.info.id,port:r},[r])}registerWorkerMessageListener(e,t){this.workerNodes[e].messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return l.thread}get busy(){return this.internalBusy()}}const G=6e4,Y={killBehavior:R.SOFT,maxInactiveTime:G,killHandler:m};class J extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i=Y){if(super(e),this.isMain=t,this.mainWorker=s,this.opts=i,null==this.isMain)throw new Error("isMain parameter is mandatory");this.checkTaskFunctions(r),this.checkWorkerOptions(this.opts),this.isMain||this.getMainWorker().on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts={...Y,...e},delete this.opts.async}checkValidTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("A taskFunctions parameter object key is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("A taskFunctions parameter object key is an empty string");if("function"!=typeof t)throw new TypeError("A taskFunctions parameter object value is not a function")}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(g,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!x(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){this.checkValidTaskFunction(s,r);const e=r.bind(this);t&&(this.taskFunctions.set(g,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){return this.checkTaskFunctionName(e),this.taskFunctions.has(e)}addTaskFunction(e,t){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(g)&&this.taskFunctions.set(g,s),this.taskFunctions.set(e,s),this.sendTaskFunctionsListToMainWorker(),!0}catch{return!1}}removeTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(g))throw new Error("Cannot remove the task function used as the default task function");const t=this.taskFunctions.delete(e);return this.sendTaskFunctionsListToMainWorker(),t}listTaskFunctions(){const e=[...this.taskFunctions.keys()];let t=g;for(const[e,s]of this.taskFunctions)if(e!==g&&s===this.taskFunctions.get(g)){t=e;break}return[e[e.indexOf(g)],t,...e.filter((e=>e!==g&&e!==t))]}setDefaultTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(g,this.taskFunctions.get(e)),!0}catch{return!1}}checkTaskFunctionName(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("name parameter is an empty string")}messageListener(e){this.checkMessageWorkerId(e),null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e)}handleKillMessage(e){if(this.stopCheckActive(),E(this.opts.killHandler))(this.opts.killHandler?.()).then((()=>(this.sendToMainWorker({kill:"success",workerId:this.id}),null))).catch((()=>{this.sendToMainWorker({kill:"failure",workerId:this.id})})).finally((()=>{this.emitDestroy()})).catch(m);else try{this.opts.killHandler?.(),this.sendToMainWorker({kill:"success",workerId:this.id})}catch{this.sendToMainWorker({kill:"failure",workerId:this.id})}finally{this.emitDestroy()}}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Message worker id is not set");if(null!=e.workerId&&e.workerId!==this.id)throw new Error(`Message worker id ${e.workerId} does not match the worker id ${this.id}`)}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??G)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??G)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}sendTaskFunctionsListToMainWorker(){this.sendToMainWorker({taskFunctions:this.listTaskFunctions(),workerId:this.id})}handleError(e){return e instanceof Error?e.message:e}run(e){const{name:t,taskId:s,data:r}=e,i=this.taskFunctions.get(t??g);null!=i?E(i)?this.runInAsyncScope(this.runAsync.bind(this),this,i,e):this.runInAsyncScope(this.runSync.bind(this),this,i,e):this.sendToMainWorker({taskError:{name:t,message:`Task function '${t}' not found`,data:r},workerId:this.id,taskId:s})}runSync(e,t){const{name:s,taskId:r,data:i}=t;try{let t=this.beginTaskPerformance(s);const o=e(i);t=this.endTaskPerformance(t),this.sendToMainWorker({data:o,taskPerformance:t,workerId:this.id,taskId:r})}catch(e){const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){const{name:s,taskId:r,data:i}=t;let o=this.beginTaskPerformance(s);e(i).then((e=>(o=this.endTaskPerformance(o),this.sendToMainWorker({data:e,taskPerformance:o,workerId:this.id,taskId:r}),null))).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}beginTaskPerformance(e){return this.checkStatistics(),{name:e??g,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){null!=this.activeInterval&&(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends J{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready)try{this.getMainWorker().on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends H{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends ${max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=H,exports.FixedThreadPool=$,exports.KillBehaviors=R,exports.Measurements=O,exports.PoolEvents=c,exports.PoolTypes=k,exports.ThreadWorker=class extends J{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready&&null!=e.port)try{this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=z,exports.WorkerTypes=l,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:worker_threads"),s=require("node:cluster"),r=require("node:crypto"),i=require("node:perf_hooks"),o=require("node:fs"),a=require("node:os"),n=require("node:async_hooks");function u(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var h=u(a);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class d extends e.EventEmitter{}const c=Object.freeze({ready:"ready",busy:"busy",full:"full",destroy:"destroy",error:"error",taskError:"taskError",backPressure:"backPressure"}),l=Object.freeze({thread:"thread",cluster:"cluster"}),g="default",m=Object.freeze((()=>{})),p={retries:6,runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},w={aggregate:!1,average:!1,median:!1},y=e=>e instanceof t.Worker?l.thread:e instanceof s.Worker?l.cluster:void 0,T=e=>e instanceof t.Worker?e.threadId:e instanceof s.Worker?e.id:void 0,f=e=>Array.isArray(e)&&0===e.length?0:Array.isArray(e)&&1===e.length?e[0]:e.reduce(((e,t)=>e+t),0)/e.length,W=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},N=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},x=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),S=(e,t)=>t===e,E=e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name,v=(e,t,s)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=b(s,e.minimum??1/0),e.maximum=C(s,e.maximum??-1/0),(t.average||t.median)&&null!=s&&(e.history.push(s),t.average?e.average=f(e.history):null!=e.average&&delete e.average,t.median?e.median=W(e.history):null!=e.median&&delete e.median))},I=()=>r.webcrypto.getRandomValues(new Uint32Array(1))[0]/4294967296,b=(...e)=>e.reduce(((e,t)=>e<t?e:t),1/0),C=(...e)=>e.reduce(((e,t)=>e>t?e:t),-1/0),R=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),z=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),O=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class F{pool;opts;nextWorkerNodeKey=0;previousWorkerNodeKey=0;strategyPolicy={dynamicWorkerUsage:!1,dynamicWorkerReady:!0};taskStatisticsRequirements={runTime:w,waitTime:w,elu:w};constructor(e,t=p){this.pool=e,this.opts=t,this.opts={...p,...t},this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}resetWorkerNodeKeyProperties(){this.nextWorkerNodeKey=0,this.previousWorkerNodeKey=0}setOptions(e){this.opts={...p,...e},this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}hasWorkerNodeBackPressure(e){return this.pool.hasWorkerNodeBackPressure(e)}isWorkerNodeEligible(e){return this.isWorkerNodeReady(e)&&!this.hasWorkerNodeBackPressure(e)}getWorkerNodeTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime.median??0:this.pool.workerNodes[e].usage.runTime.average??0}getWorkerNodeTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime.median??0:this.pool.workerNodes[e].usage.waitTime.average??0}getWorkerNodeTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active.median??0:this.pool.workerNodes[e].usage.elu.active.average??0}setPreviousWorkerNodeKey(e){this.previousWorkerNodeKey=e??this.previousWorkerNodeKey}checkNextWorkerNodeEligibility(){this.isWorkerNodeEligible(this.nextWorkerNodeKey)||(this.nextWorkerNodeKey=void 0)}computeDefaultWorkerWeight(){let e=0;for(const t of a.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/a.cpus().length)}}class Q extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:{aggregate:!0,average:!0,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){for(const e of this.pool.workerNodes)delete e.strategyData?.virtualTaskEndTimestamp;return!0}update(e){return this.pool.workerNodes[e].strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(e)},!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.fairShareNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}fairShareNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(null==t.strategyData?.virtualTaskEndTimestamp&&(t.strategyData={virtualTaskEndTimestamp:this.computeWorkerNodeVirtualTaskEndTimestamp(s)}),t.strategyData.virtualTaskEndTimestamp<r[e].strategyData.virtualTaskEndTimestamp?s:e)),0)}computeWorkerNodeVirtualTaskEndTimestamp(e){return this.getWorkerNodeVirtualTaskEndTimestamp(e,this.getWorkerNodeVirtualTaskStartTimestamp(e))}getWorkerNodeVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===O.elu?this.getWorkerNodeTaskElu(e):this.getWorkerNodeTaskRunTime(e))}getWorkerNodeVirtualTaskStartTimestamp(e){const t=this.pool.workerNodes[e]?.strategyData?.virtualTaskEndTimestamp,s=performance.now();return s<(t??-1/0)?t:s}}class K extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};roundId=0;defaultWorkerWeight;roundWeights;workerNodeId=0;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.resetWorkerNodeKeyProperties(),this.roundId=0,this.workerNodeId=0,this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){for(let e=this.roundId;e<this.roundWeights.length;e++){this.roundId=e;for(let t=this.workerNodeId;t<this.pool.workerNodes.length;t++){this.workerNodeId=t,this.workerNodeId!==this.nextWorkerNodeKey&&0!==this.workerNodeVirtualTaskRunTime&&(this.workerNodeVirtualTaskRunTime=0);const s=this.opts.weights?.[t]??this.defaultWorkerWeight;if(s>=this.roundWeights[e]&&this.workerNodeVirtualTaskRunTime<s)return this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(t),this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=t,this.nextWorkerNodeKey}}this.interleavedWeightedRoundRobinNextWorkerNodeId()}interleavedWeightedRoundRobinNextWorkerNodeId(){this.roundId===this.roundWeights.length-1&&this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=0,this.workerNodeId=0):this.workerNodeId===this.pool.workerNodes.length-1?(this.roundId=this.roundId+1,this.workerNodeId=0):this.workerNodeId=this.workerNodeId+1}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.workerNodeId===e&&this.workerNodeId>this.pool.workerNodes.length-1&&(this.workerNodeId=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class P extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:w};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastBusyNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastBusyNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.runTime.aggregate??0)+(t.usage.waitTime.aggregate??0)<(r[e].usage.runTime.aggregate??0)+(r[e].usage.waitTime.aggregate??0)?s:e),0)}}class M extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastUsedNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastUsedNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>t.usage.tasks.executed+t.usage.tasks.executing+t.usage.tasks.queued<r[e].usage.tasks.executed+r[e].usage.tasks.executing+r[e].usage.tasks.queued?s:e),0)}}class q extends F{taskStatisticsRequirements={runTime:w,waitTime:w,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.nextWorkerNodeKey=this.leastEluNextWorkerNodeKey(),this.nextWorkerNodeKey}remove(){return!0}leastEluNextWorkerNodeKey(){return this.pool.workerNodes.reduce(((e,t,s,r)=>(t.usage.elu.active.aggregate??0)<(r[e].usage.elu.active.aggregate??0)?s:e),0)}}class A extends F{constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.resetWorkerNodeKeyProperties(),!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;return this.setPreviousWorkerNodeKey(e),this.roundRobinNextWorkerNodeKey(),e}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.nextWorkerNodeKey}}class U extends F{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:w,elu:w};defaultWorkerWeight;workerNodeVirtualTaskRunTime=0;constructor(e,t=p){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.resetWorkerNodeKeyProperties(),this.workerNodeVirtualTaskRunTime=0,!0}update(){return!0}choose(){return this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey),this.weightedRoundRobinNextWorkerNodeKey()}remove(e){return 0===this.pool.workerNodes.length&&this.reset(),this.nextWorkerNodeKey===e&&(this.workerNodeVirtualTaskRunTime=0,this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),this.previousWorkerNodeKey===e&&this.previousWorkerNodeKey>this.pool.workerNodes.length-1&&(this.previousWorkerNodeKey=this.pool.workerNodes.length-1),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.opts.weights?.[this.nextWorkerNodeKey??this.previousWorkerNodeKey]??this.defaultWorkerWeight;return this.workerNodeVirtualTaskRunTime<e?this.workerNodeVirtualTaskRunTime=this.workerNodeVirtualTaskRunTime+this.getWorkerNodeTaskRunTime(this.nextWorkerNodeKey??this.previousWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:(this.nextWorkerNodeKey??this.previousWorkerNodeKey)+1,this.workerNodeVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class B{workerChoiceStrategy;opts;workerChoiceStrategies;retriesCount=0;constructor(e,t=z.ROUND_ROBIN,s=p){this.workerChoiceStrategy=t,this.opts=s,this.opts={...p,...s},this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[z.ROUND_ROBIN,new(A.bind(this))(e,s)],[z.LEAST_USED,new(M.bind(this))(e,s)],[z.LEAST_BUSY,new(P.bind(this))(e,s)],[z.LEAST_ELU,new(q.bind(this))(e,s)],[z.FAIR_SHARE,new(Q.bind(this))(e,s)],[z.WEIGHTED_ROUND_ROBIN,new(U.bind(this))(e,s)],[z.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(K.bind(this))(e,s)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e&&this.retriesCount<this.opts.retries)return this.retriesCount++,this.execute();if(null==e)throw new Error(`Worker node key chosen is null or undefined after ${this.retriesCount} retries`);return this.retriesCount=0,e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){this.opts={...p,...e};for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class D extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...s){let r=[];if(arguments.length>=3&&null!=t){if(r=super.splice(e,t,...s),this.length>this.size){const e=super.splice(0,this.length-this.size);r=new D(r.length+e.length,...r,...e)}}else r=2===arguments.length?super.splice(e,t):super.splice(e);return r}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class L{data;next;prev;constructor(e){this.data=e}}class V{head;tail;size;maxSize;constructor(){this.clear()}push(e){const t=new L(e);return null==this.tail?this.head=this.tail=t:(t.prev=this.tail,this.tail=this.tail.next=t),this.incrementSize()}unshift(e){const t=new L(e);return null==this.head?this.head=this.tail=t:(t.next=this.head,this.head=this.head.prev=t),this.incrementSize()}pop(){if(null==this.head)return;const e=this.tail;return this.tail=this.tail.prev,null==this.tail?this.head=void 0:this.tail.next=void 0,--this.size,e?.data}shift(){if(null==this.head)return;const e=this.head;return this.head=this.head.next,null==this.head?this.tail=void 0:this.head.prev=void 0,--this.size,e?.data}peekFirst(){return this.head?.data}peekLast(){return this.tail?.data}clear(){this.head=void 0,this.tail=void 0,this.size=0,this.maxSize=0}[Symbol.iterator](){let e=this.head;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.next,t}}}backward(){return{[Symbol.iterator]:()=>{let e=this.tail;return{next:()=>{if(null==e)return{value:void 0,done:!0};const t={value:e.data,done:!1};return e=e.prev,t}}}}}incrementSize(){return++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}}class _{worker;info;usage;strategyData;messageChannel;tasksQueueBackPressureSize;onBackPressure;onEmptyQueue;tasksQueue;onEmptyQueueCount;taskFunctionsUsage;constructor(e,s){this.checkWorkerNodeArguments(e,s),this.worker=e,this.info=this.initWorkerInfo(e),this.usage=this.initWorkerUsage(),this.info.type===l.thread&&(this.messageChannel=new t.MessageChannel),this.tasksQueueBackPressureSize=s,this.tasksQueue=new V,this.onEmptyQueueCount=0,this.taskFunctionsUsage=new Map}tasksQueueSize(){return this.tasksQueue.size}enqueueTask(e){const t=this.tasksQueue.push(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}unshiftTask(e){const t=this.tasksQueue.unshift(e);return null!=this.onBackPressure&&this.hasBackPressure()&&this.onBackPressure(this.info.id),t}dequeueTask(){const e=this.tasksQueue.shift();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}popTask(){const e=this.tasksQueue.pop();return null!=this.onEmptyQueue&&0===this.tasksQueue.size&&this.startOnEmptyQueue().catch(m),e}clearTasksQueue(){this.tasksQueue.clear()}hasBackPressure(){return this.tasksQueue.size>=this.tasksQueueBackPressureSize}resetUsage(){this.usage=this.initWorkerUsage(),this.taskFunctionsUsage.clear()}closeChannel(){null!=this.messageChannel&&(this.messageChannel?.port1.unref(),this.messageChannel?.port2.unref(),this.messageChannel?.port1.close(),this.messageChannel?.port2.close(),delete this.messageChannel)}getTaskFunctionWorkerUsage(e){if(!Array.isArray(this.info.taskFunctions))throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list is not yet defined`);if(Array.isArray(this.info.taskFunctions)&&this.info.taskFunctions.length<3)throw new Error(`Cannot get task function worker usage for task function name '${e}' when task function names list has less than 3 elements`);return e===g&&(e=this.info.taskFunctions[1]),this.taskFunctionsUsage.has(e)||this.taskFunctionsUsage.set(e,this.initTaskFunctionWorkerUsage(e)),this.taskFunctionsUsage.get(e)}async startOnEmptyQueue(){this.onEmptyQueueCount>0&&(this.usage.tasks.executing>0||this.tasksQueue.size>0)?this.onEmptyQueueCount=0:(this.onEmptyQueue(this.info.id),++this.onEmptyQueueCount,await(async e=>{await new Promise((t=>{setTimeout(t,e)}))})(((e=0,t=100)=>{const s=Math.pow(2,e)*t;return s+.2*s*I()})(this.onEmptyQueueCount)),await this.startOnEmptyQueue())}initWorkerInfo(e){return{id:T(e),type:y(e),dynamic:!1,ready:!1}}initWorkerUsage(){const e=()=>this.tasksQueue.size,t=()=>this.tasksQueue.maxSize;return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}initTaskFunctionWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)(s.name===g&&e===this.info.taskFunctions[1]||s.name!==g&&e===s.name)&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},stolen:0,failed:0},runTime:{history:new D},waitTime:{history:new D},elu:{idle:{history:new D},active:{history:new D}}}}checkWorkerNodeArguments(e,t){if(null==e)throw new TypeError("Cannot construct a worker node without a worker");if(null==t)throw new TypeError("Cannot construct a worker node without a tasks queue back pressure size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot construct a worker node with a tasks queue back pressure size that is not an integer");if(t<=0)throw new RangeError("Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer")}}class j{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;max;starting;started;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!this.isMain())throw new Error("Cannot start a pool from a worker with the same type as the pool");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),!0===this.opts.enableEvents&&(this.emitter=new d),this.workerChoiceStrategyContext=new B(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.started=!0,this.startTimestamp=i.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!o.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new TypeError("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!x(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??z.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions={...p,...e.workerChoiceStrategyOptions},this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(z).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!x(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.retries&&!Number.isSafeInteger(e.retries))throw new TypeError("Invalid worker choice strategy options: retries must be an integer");if(null!=e.retries&&e.retries<0)throw new RangeError(`Invalid worker choice strategy options: retries '${e.retries}' must be greater or equal than zero`);if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(O).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!x(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e?.concurrency))throw new TypeError("Invalid worker node tasks concurrency: must be an integer");if(null!=e?.concurrency&&e?.concurrency<=0)throw new RangeError(`Invalid worker node tasks concurrency: ${e?.concurrency} is a negative integer or zero`);if(null!=e?.queueMaxSize)throw new Error("Invalid tasks queue options: queueMaxSize is deprecated, please use size instead");if(null!=e?.size&&!Number.isSafeInteger(e?.size))throw new TypeError("Invalid worker node tasks queue size: must be an integer");if(null!=e?.size&&e?.size<=0)throw new RangeError(`Invalid worker node tasks queue size: ${e?.size} is a negative integer or zero`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.44",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:N(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),...!0===this.opts.enableTasksQueue&&{queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0)},...!0===this.opts.enableTasksQueue&&{maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0)},...!0===this.opts.enableTasksQueue&&{backPressure:this.hasBackPressure()},...!0===this.opts.enableTasksQueue&&{stolenTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.stolen),0)},failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.runTime.history)),[])))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:N(b(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:N(C(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&{average:N(f(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:N(W(this.workerNodes.reduce(((e,t)=>e.concat(t.usage.waitTime.history)),[])))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(i.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}get minSize(){return this.numberOfWorkers}get maxSize(){return this.max??this.numberOfWorkers}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Worker message received without worker id");if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const[e,t]of this.workerNodes.entries())t.resetUsage(),this.sendStatisticsMessageToWorker(e)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions={...p,...e},this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e),this.setTasksQueueSize(this.opts.tasksQueueOptions.size)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}setTasksQueueSize(e){for(const t of this.workerNodes)t.tasksQueueBackPressureSize=e}buildTasksQueueOptions(e){return{size:Math.pow(this.maxSize,2),concurrency:1,...e}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return!0===this.opts.enableTasksQueue?-1===this.workerNodes.findIndex((e=>e.info.ready&&e.usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency)):-1===this.workerNodes.findIndex((e=>e.info.ready&&0===e.usage.tasks.executing))}listTaskFunctions(){for(const e of this.workerNodes)if(Array.isArray(e.info.taskFunctions)&&e.info.taskFunctions.length>0)return e.info.taskFunctions;return[]}shallExecuteTask(e){return 0===this.tasksQueueSize(e)&&this.workerNodes[e].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency}async execute(e,t,s){return await new Promise(((o,a)=>{if(!this.started)return void a(new Error("Cannot execute a task on destroyed pool"));if(null!=t&&"string"!=typeof t)return void a(new TypeError("name argument must be a string"));if(null!=t&&"string"==typeof t&&0===t.trim().length)return void a(new TypeError("name argument must not be an empty string"));if(null!=s&&!Array.isArray(s))return void a(new TypeError("transferList argument must be an array"));const n=i.performance.now(),u=this.chooseWorkerNode(),h=this.getWorkerInfo(u),k={name:t??g,data:e??{},transferList:s,timestamp:n,workerId:h.id,taskId:r.randomUUID()};this.promiseResponseMap.set(k.taskId,{resolve:o,reject:a,workerNodeKey:u}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.shallExecuteTask(u)?this.executeTask(u,k):this.enqueueTask(u,k)}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)}))),this.emitter?.emit(c.destroy,this.info),this.started=!1}async sendKillMessageToWorker(e,t){await new Promise(((s,r)=>{this.registerWorkerMessageListener(e,(e=>{"success"===e.kill?s():"failure"===e.kill&&r(new Error(`Worker ${t} kill message handling failed`))})),this.sendToWorker(e,{kill:!0,workerId:t})}))}setupHook(){}beforeTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.name);++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t)}}afterTaskExecutionHook(e,t){if(null!=this.workerNodes[e]?.usage){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}if(this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name)){const s=this.workerNodes[e].getTaskFunctionWorkerUsage(t.taskPerformance?.name);this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t)}}shallUpdateTaskFunctionWorkerUsage(e){const t=this.getWorkerInfo(e);return null!=t&&Array.isArray(t.taskFunctions)&&t.taskFunctions.length>2}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;null!=s.executing&&s.executing>0&&--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){null==t.taskError&&v(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0)}updateWaitTimeWorkerUsage(e,t){const s=i.performance.now(),r=s-(t.timestamp??s);v(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,r)}updateEluWorkerUsage(e,t){if(null!=t.taskError)return;const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;v(e.elu.active,s,t.taskPerformance?.elu?.active??0),v(e.elu.idle,s,t.taskPerformance?.elu?.idle??0),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("online",this.opts.onlineHandler??m),e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(c.error,t),!0===this.opts.restartWorkerOnError&&!this.starting&&this.started&&(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;(S(R.HARD,e.kill)||S(R.SOFT,e.kill)&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch((e=>{this.emitter?.emit(c.error,e)}))}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,(this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady||this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage)&&(t.ready=!0),this.checkAndEmitDynamicWorkerCreationEvents(),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendStatisticsMessageToWorker(e),!0===this.opts.enableTasksQueue&&(this.workerNodes[e].onEmptyQueue=this.taskStealingOnEmptyQueue.bind(this),this.workerNodes[e].onBackPressure=this.tasksStealingOnBackPressure.bind(this))}sendStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){const t=this.workerNodes.reduce(((e,t,s,r)=>t.info.ready&&t.usage.tasks.queued<r[e].usage.tasks.queued?s:e),0),s=this.workerNodes[t],r={...this.dequeueTask(e),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,r):this.enqueueTask(t,r)}}updateTaskStolenStatisticsWorkerUsage(e,t){const s=this.workerNodes[e];if(null!=s?.usage&&++s.usage.tasks.stolen,this.shallUpdateTaskFunctionWorkerUsage(e)&&null!=s.getTaskFunctionWorkerUsage(t)){++s.getTaskFunctionWorkerUsage(t).tasks.stolen}}taskStealingOnEmptyQueue(e){const t=this.getWorkerNodeKeyByWorkerId(e),s=this.workerNodes[t],r=this.workerNodes.slice().sort(((e,t)=>t.usage.tasks.queued-e.usage.tasks.queued)).find((t=>t.info.ready&&t.info.id!==e&&t.usage.tasks.queued>0));if(null!=r){const e={...r.popTask(),workerId:s.info.id};this.shallExecuteTask(t)?this.executeTask(t,e):this.enqueueTask(t,e),this.updateTaskStolenStatisticsWorkerUsage(t,e.name)}}tasksStealingOnBackPressure(e){if(this.opts.tasksQueueOptions?.size<=1)return;const t=this.workerNodes[this.getWorkerNodeKeyByWorkerId(e)],s=this.workerNodes.slice().sort(((e,t)=>e.usage.tasks.queued-t.usage.tasks.queued));for(const[r,i]of s.entries())if(t.usage.tasks.queued>0&&i.info.ready&&i.info.id!==e&&i.usage.tasks.queued<this.opts.tasksQueueOptions?.size-1){const e={...t.popTask(),workerId:i.info.id};this.shallExecuteTask(r)?this.executeTask(r,e):this.enqueueTask(r,e),this.updateTaskStolenStatisticsWorkerUsage(r,e.name)}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready&&null!=e.taskFunctions?this.handleWorkerReadyResponse(e):null!=e.taskId?this.handleTaskExecutionResponse(e):null!=e.taskFunctions&&(this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).taskFunctions=e.taskFunctions)}}handleWorkerReadyResponse(e){if(!1===e.ready)throw new Error(`Worker ${e.workerId} failed to initialize`);const t=this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId));t.ready=e.ready,t.taskFunctions=e.taskFunctions,null!=this.emitter&&this.ready&&this.emitter.emit(c.ready,this.info)}handleTaskExecutionResponse(e){const{taskId:t,taskError:s,data:r}=e,i=this.promiseResponseMap.get(t);if(null!=i){null!=s?(this.emitter?.emit(c.taskError,s),i.reject(s.message)):i.resolve(r);const o=i.workerNodeKey;this.afterTaskExecutionHook(o,e),this.workerChoiceStrategyContext.update(o),this.promiseResponseMap.delete(t),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(o)>0&&this.workerNodes[o].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(o,this.dequeueTask(o))}}checkAndEmitTaskExecutionEvents(){this.busy&&this.emitter?.emit(c.busy,this.info)}checkAndEmitTaskQueuingEvents(){this.hasBackPressure()&&this.emitter?.emit(c.backPressure,this.info)}checkAndEmitDynamicWorkerCreationEvents(){this.type===k.dynamic&&this.full&&this.emitter?.emit(c.full,this.info)}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new _(e,this.opts.tasksQueueOptions?.size??Math.pow(this.maxSize,2));this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker added not found in worker nodes");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}hasWorkerNodeBackPressure(e){return!0===this.opts.enableTasksQueue&&this.workerNodes[e].hasBackPressure()}hasBackPressure(){return!0===this.opts.enableTasksQueue&&-1===this.workerNodes.findIndex((e=>!e.hasBackPressure()))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t,t.transferList),this.checkAndEmitTaskExecutionEvents()}enqueueTask(e,t){const s=this.workerNodes[e].enqueueTask(t);return this.checkAndEmitTaskQueuingEvents(),s}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class H extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){s.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return s.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));s.on("disconnect",(()=>{s.kill()})),await this.sendKillMessageToWorker(e,t.info.id),s.disconnect(),await r}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].info.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return s.fork(this.opts.env)}get type(){return k.fixed}get worker(){return l.cluster}get busy(){return this.internalBusy()}}class $ extends j{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return t.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));await this.sendKillMessageToWorker(e,t.info.id),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t,s){this.workerNodes[e].messageChannel.port1.postMessage(t,s)}sendStartupMessageToWorker(e){const t=this.workerNodes[e],s=t.worker,r=t.messageChannel.port2;s.postMessage({ready:!1,workerId:t.info.id,port:r},[r])}registerWorkerMessageListener(e,t){this.workerNodes[e].messageChannel.port1.on("message",t)}createWorker(){return new t.Worker(this.filePath,{env:t.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return l.thread}get busy(){return this.internalBusy()}}const G=6e4,Y={killBehavior:R.SOFT,maxInactiveTime:G,killHandler:m};class J extends n.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i=Y){if(super(e),this.isMain=t,this.mainWorker=s,this.opts=i,null==this.isMain)throw new Error("isMain parameter is mandatory");this.checkTaskFunctions(r),this.checkWorkerOptions(this.opts),this.isMain||this.getMainWorker().on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts={...Y,...e},delete this.opts.async}checkValidTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("A taskFunctions parameter object key is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("A taskFunctions parameter object key is an empty string");if("function"!=typeof t)throw new TypeError("A taskFunctions parameter object value is not a function")}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(g,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!x(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){this.checkValidTaskFunction(s,r);const e=r.bind(this);t&&(this.taskFunctions.set(g,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){return this.checkTaskFunctionName(e),this.taskFunctions.has(e)}addTaskFunction(e,t){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(g)&&this.taskFunctions.set(g,s),this.taskFunctions.set(e,s),this.sendTaskFunctionsListToMainWorker(),!0}catch{return!1}}removeTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(g))throw new Error("Cannot remove the task function used as the default task function");const t=this.taskFunctions.delete(e);return this.sendTaskFunctionsListToMainWorker(),t}listTaskFunctions(){const e=[...this.taskFunctions.keys()];let t=g;for(const[e,s]of this.taskFunctions)if(e!==g&&s===this.taskFunctions.get(g)){t=e;break}return[e[e.indexOf(g)],t,...e.filter((e=>e!==g&&e!==t))]}setDefaultTaskFunction(e){if(this.checkTaskFunctionName(e),e===g)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(g,this.taskFunctions.get(e)),!0}catch{return!1}}checkTaskFunctionName(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if("string"==typeof e&&0===e.trim().length)throw new TypeError("name parameter is an empty string")}messageListener(e){this.checkMessageWorkerId(e),null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.taskId&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e)}handleKillMessage(e){if(this.stopCheckActive(),E(this.opts.killHandler))(this.opts.killHandler?.()).then((()=>(this.sendToMainWorker({kill:"success",workerId:this.id}),null))).catch((()=>{this.sendToMainWorker({kill:"failure",workerId:this.id})})).finally((()=>{this.emitDestroy()})).catch(m);else try{this.opts.killHandler?.(),this.sendToMainWorker({kill:"success",workerId:this.id})}catch{this.sendToMainWorker({kill:"failure",workerId:this.id})}finally{this.emitDestroy()}}checkMessageWorkerId(e){if(null==e.workerId)throw new Error("Message worker id is not set");if(null!=e.workerId&&e.workerId!==this.id)throw new Error(`Message worker id ${e.workerId} does not match the worker id ${this.id}`)}startCheckActive(){this.lastTaskTimestamp=i.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??G)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){i.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??G)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}sendTaskFunctionsListToMainWorker(){this.sendToMainWorker({taskFunctions:this.listTaskFunctions(),workerId:this.id})}handleError(e){return e instanceof Error?e.message:e}run(e){const{name:t,taskId:s,data:r}=e,i=this.taskFunctions.get(t??g);null!=i?E(i)?this.runInAsyncScope(this.runAsync.bind(this),this,i,e):this.runInAsyncScope(this.runSync.bind(this),this,i,e):this.sendToMainWorker({taskError:{name:t,message:`Task function '${t}' not found`,data:r},workerId:this.id,taskId:s})}runSync(e,t){const{name:s,taskId:r,data:i}=t;try{let t=this.beginTaskPerformance(s);const o=e(i);t=this.endTaskPerformance(t),this.sendToMainWorker({data:o,taskPerformance:t,workerId:this.id,taskId:r})}catch(e){const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){const{name:s,taskId:r,data:i}=t;let o=this.beginTaskPerformance(s);e(i).then((e=>(o=this.endTaskPerformance(o),this.sendToMainWorker({data:e,taskPerformance:o,workerId:this.id,taskId:r}),null))).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({taskError:{name:s,message:t,data:i},workerId:this.id,taskId:r})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}beginTaskPerformance(e){return this.checkStatistics(),{name:e??g,timestamp:i.performance.now(),...this.statistics.elu&&{elu:i.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:i.performance.now()-e.timestamp},...this.statistics.elu&&{elu:i.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){null!=this.activeInterval&&(this.lastTaskTimestamp=i.performance.now())}}exports.ClusterWorker=class extends J{constructor(e,t={}){super("worker-cluster-pool:poolifier",s.isPrimary,s.worker,e,t)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready)try{this.getMainWorker().on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends H{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends ${max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=H,exports.FixedThreadPool=$,exports.KillBehaviors=R,exports.Measurements=O,exports.PoolEvents=c,exports.PoolTypes=k,exports.ThreadWorker=class extends J{port;constructor(e,s={}){super("worker-thread-pool:poolifier",t.isMainThread,t.parentPort,e,s)}handleReadyMessage(e){if(e.workerId===this.id&&!1===e.ready&&null!=e.port)try{this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,taskFunctions:this.listTaskFunctions(),workerId:this.id})}catch{this.sendToMainWorker({ready:!1,taskFunctions:this.listTaskFunctions(),workerId:this.id})}}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return t.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=z,exports.WorkerTypes=l,exports.availableParallelism=()=>{let e=1;try{e=h.availableParallelism()}catch{const t=h.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

package.json

 {
   "$schema": "https://json.schemastore.org/package",
   "name": "poolifier",
-  "version": "2.6.43",
+  "version": "2.6.44",
   "description": "Fast and small Node.js Worker_Threads and Cluster Worker Pool",
@@ -6,0 +6,0 @@ "license": "MIT",

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

No metric changes

No dependency changes