/* By: Michael Simnitt */ /* globals */ var step; /* timeout container */ var tasks = [], curTasks = []; /* arrays */ var ticks = 0, uid =0; var cycle=1000; /* ms between handler ticks */ alert("This program builds 26 task objects (6 static & 20 random) each with delay times and priority, one with retasking.\n\nDelay: Ticks until active.\nPriority: Execution Order.\nRetask: Schedule Task again * (n)\n\nNote: Reschedule currently set to 4 ticks.") /* on-load initialization() */ window.onload = function(){ new task(1); new task(2); new task(13,1,2); new task(13,3); new task(8,2); new task(8,1); for(i=0;i<20;i++){ new task(Math.floor(Math.random()*10),Math.floor(Math.random()*9)); } step = setTimeout(process, cycle); } /* task object constuctor */ var task = function(d, p=9, r=0, rt=4){ this.id = uid++; /* unique id */ this.delay = d; /* timer delay */ this.priority = p; /* execute priority */ this.retask = r; this.retaskTime = rt;//todo this.method = function(){execute(this)}; tasks.push(this); } /* process remaining tasks */ function process(){ console.log("Current Handler Cycle: "+ ++ticks+"\nID: , Delay:" ) if(tasks.length >0){ /* tasks left? */ let tempTask = []; tasks.forEach(function(el,inx){ if(--el.delay < 1){ /*delay left?*/ curTasks.push(el); }else{ tempTask.push(el); el.method(); } }); tasks = tempTask; handle(); /* execute tasks */ step = setTimeout(process, cycle); console.log("Tasks Remaining:"+tasks.length+" .. Cycle Timer:" + cycle * ticks+"\n"); window.scrollTo(0,document.body.scrollHeight); }else{ document.body.innerHTML+="All Tasks Complete

" console.log("No Tasks Remain.")} window.scrollTo(0,document.body.scrollHeight); } function execute(el){ console.log(el.id+" "+el.delay); document.body.innerHTML += "ID:" + el.id + ".. delay:" + el.delay + ".. priority:" + el.priority + "
" } function executed(el){ console.log("ID:"+el.id+" .. priority:"+el.priority+" -Executed"); document.body.innerHTML+= "ID:" + el.id+" executed @ time: ("+cycle*ticks+"ms)
" window.scrollTo(0,document.body.scrollHeight); } /* execute current tasks */ function handle(){ if(curTasks.length > 0){ /*any tasks?*/ /* sort by priority */ curTasks.sort(psort); curTasks.forEach(function(el){ executed(el); if(el.retask){/* retask? */ el.retask--; el.delay = el.retaskTime; tasks.push(el) console.log("Retasking .. ID:" +el.id + " .. Retasks-Left:" + el.retask); document.body.innerHTML+= "Retasking: " + el.id+"
" } }); curTasks = []; } } function psort(a,b){ return(a.priority - b.priority) }

Re-Tasker JS