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test.js
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test.js
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var assert = require("assert"), os = require('os');
// this works on windows
// npm install mocha -g
// mocha test.js -expose-gc
class ClassFunc{
//state;
//name;
constructor(state, name){
this.state=state; this.name=name
}
getState(){return this.state;}
getName(){return this.name;}
getName2(){return this.name;}
getName3(){return this.name;}
getName4(){return this.name;}
getName5(){return this.name;}
getName6(){return this.name;}
getName7(){return this.name;}
}
function PrototypeFunc (state, name){this.state=state; this.name=name}
PrototypeFunc.prototype = {
getState:function (){return this.state;},
// setState:function (_state){this.state = _state;},
getName:function (){return this.name;},
getName2:function (){return this.name;},
getName3:function (){return this.name;},
getName4:function (){return this.name;},
getName5:function (){return this.name;},
getName6:function (){return this.name;},
getName7:function (){return this.name;},
// setName:function (_name){this.name = _name;}
};
function InstanceFunc (state, name){
this.state=state;
this.name=name;
this.getState = function (){return this.state;}
//setState:function (_state){this.state = _state;},
this.getName=function (){return this.name;}
this.getName2=function (){return this.name;}
this.getName3=function (){return this.name;}
this.getName4=function (){return this.name;}
this.getName5=function (){return this.name;}
this.getName6=function (){return this.name;}
this.getName7=function (){return this.name;}
//setName:function (_name){this.name = _name;}
}
function InstanceFuncCrazy (){
return {
setState:function(s){this.state=s;},
getState:function(){return this.state;},
getName:function(){return this.name;},
setName:function(s){this.name=s;},
getName2:function(){return this.name;},
getName3:function(){return this.name;},
getName4:function(){return this.name;},
getName5:function(){return this.name;},
getName6:function(){return this.name;},
getName7:function(){return this.name;}
}
}
function ClosureFunc (state, name){
return{
getState(){return state;},
//setState(_state){state = _state;},
getName(){return name;},
getName2(){return name;},
getName3(){return name;},
getName4(){return name;},
getName5(){return name;},
getName6(){return name;},
getName7(){return name;}
//setName(_name){name = _name;}
};
}
describe('# TEST OBJECT CREATION: prototype, instance, closure...', function(){
console.log ();
var count = 500000, objs = [count];
var mem;
it ('PrototypeFunc allocate', function (done){
global.gc();
console.log ();
let ts = Date.now ();
for (let i = 0; i < count; ++i){objs[i] = new PrototypeFunc ("state" + i, "name"+i);}
let diff = Date.now () - ts;
console.log ("PrototypeFunc Allocation took:%d msec", diff);
done ();
});
it ('PrototypeFunc access', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
//objs[i].setState (state + i);
assert (objs[i].getState () == "state" + i, "States should be equal");
//objs[i].setName (name + i);
assert (objs[i].getName () == "name" + i, "Names should be equal");
}
let diff = Date.now() - ts;
global.gc();
mem = os.freemem();
console.log ("PrototypeFunc Access took:%d msec", diff);
console.log ();
for (let i = 0; i < count; ++i){delete objs[i]}
global.gc();
//console.log ("Free Memory:" + mem + "\n");
done ();
});
// -----------------------------------------------------------------------------
it ('ClassFunc allocate', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){objs[i] = new ClassFunc ("state" + i, "name"+i);}
let diff = Date.now() - ts;
console.log ("ClassFunc Allocation took:%d msec", diff);
done ();
});
it ('ClassFunc access', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
//objs[i].setState (state + i);
assert (objs[i].getState () === "state" + i, "States should be equal "+i);
//objs[i].setName (name + i);
assert (objs[i].getName () === "name" + i, "Names should be equal "+i);
}
let diff = Date.now() - ts;
global.gc();
var mem2 = os.freemem();
console.log ("ClassFunc Access took:%d msec", diff);
//console.log ("Free Memory:" + mem2 + "\n");
//console.log ("Mem diff:" + (mem - mem2) / 1024 + "k");
console.log ("ClassFunc Mem overhead per obj:" + (mem - mem2) / count + 'bytes');
console.log ();
for (let i = 0; i < count; ++i){delete objs[i]}
global.gc();
done ();
});
// -----------------------------------------------------------------------------
it ('ClosureFunc allocate', function (done){
global.gc();
let ts = Date.now ();
for (i = 0; i < count; ++i){objs[i] = ClosureFunc ("state" + i, "name"+i);}
let diff = Date.now() - ts;
console.log ("ClosureFunc Allocation took:%d msec", diff);
done ();
});
it ('ClosureFunc access', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
//objs[i].setState (state + i);
assert (objs[i].getState () === "state" + i, "States should be equal "+i);
//objs[i].setName (name + i);
assert (objs[i].getName () === "name" + i, "Names should be equal "+i);
}
let diff = Date.now() - ts;
global.gc();
var mem2 = os.freemem();
console.log ("ClosureFunc Access took:%d msec", diff);
//console.log ("Free Memory:" + mem2 + "\n");
//console.log ("Mem diff:" + (mem - mem2) / 1024 + "k");
console.log ("ClosureFunc Mem overhead per obj:" + (mem - mem2) / count + 'bytes');
console.log ();
for (let i = 0; i < count; ++i){delete objs[i]}
global.gc();
done ();
});
// ----------------------------------------------------------------------------
it ('InstanceFunc allocate', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){objs[i] = new InstanceFunc ("state" + i, "name"+i);}
let diff = Date.now() - ts;
console.log ("InstanceFunc Allocation took:%d msec", diff);
done ();
});
it ('InstanceFunc access', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
//objs[i].setState (state + i);
assert (objs[i].getState () == "state" + i, "States should be equal");
//objs[i].setName (name + i);
assert (objs[i].getName () == "name" + i, "Names should be equal");
}
let diff = Date.now() - ts;
global.gc();
var mem2 = os.freemem();
console.log ("InstanceFunc Access took:%d msec", diff);
//console.log ("Free Memory:" + mem2 + "\n");
//console.log ("Mem diff:" + (mem - mem2) / 1024 + "k");
console.log ("InstanceFunc Mem overhead per obj:" + (mem - mem2) / count + 'bytes');
console.log ();
for (let i = 0; i < count; ++i){delete objs[i]}
global.gc();
done ();
});
// -----------------------------------------------------------------------------
it ('InstanceFuncCrazy allocate', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
objs[i] = InstanceFuncCrazy ();
objs[i].setState("state"+ i);
objs[i].setName("name"+ i);
}
let diff = Date.now() - ts;
console.log ("InstanceFuncCrazy Allocation took:%d msec", diff);
done ();
});
it ('InstanceFuncCrazy access', function (done){
global.gc();
let ts = Date.now ();
for (let i = 0; i < count; ++i){
//objs[i].setState (state + i);
assert (objs[i].getState () == "state" + i, "States should be equal");
//objs[i].setName (name + i);
assert (objs[i].getName () == "name" + i, "Names should be equal");
}
let diff = Date.now() - ts;
global.gc();
var mem2 = os.freemem();
console.log ("InstanceFuncCrazy Access took:%d msec", diff);
//console.log ("Free Memory:" + mem2 + "\n");
//console.log ("Mem diff:" + (mem - mem2) / 1024 + "k");
console.log ("InstanceFuncCrazy Mem overhead per obj:" + (mem - mem2) / count + 'bytes');
console.log ();
for (let i = 0; i < count; ++i){delete objs[i]}
global.gc();
done ();
});
});