xk

/*

$ node bench.js 
Threads_a_gogo JS thread ->  4624 (ms)  298607040
Node's main JS thread    ->  8471 (ms)  298607040
Ratio: 1.83 times faster

*/

function fib (n) {

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var http = require('http')
var pool = require('threads_a_gogo').createPool(5).all.eval(fib);

function fib (n) {
  if (n < 2) {
    return 1;
  } else {
    return fib(n - 2) + fib(n - 1);
  }
}

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jorge@UbuntuParallels:~$ git clone http://github.com/xk/node-threads-a-gogo.git
Cloning into node-threads-a-gogo...
remote: Counting objects: 112, done.
remote: Compressing objects: 100% (90/90), done.
remote: Total 112 (delta 16), reused 112 (delta 16)
Receiving objects: 100% (112/112), 59.80 KiB | 84 KiB/s, done.
Resolving deltas: 100% (16/16), done.
jorge@UbuntuParallels:~$ cd node-threads-a-gogo/
jorge@UbuntuParallels:~/node-threads-a-gogo$ node-waf configure install

xk

/*
  2012-04-22 jorge@jorgechamorro.com

  MacBookPro5,4 core2duo @ 2.53GHz, node v0.7.5:
  loopsPerSecond: 103412616.3, nextTicksPerSecond: 671885.8, ratio: 153.9x times faster

  beagleboard beaglebone @ 500Mhz:
  loopsPerSecond: 6781040.2, nextTicksPerSecond: 27472.4, ratio: 246.8x times faster
*/

xk

// 20111028 jorge@jorgechamorro.com
// How to subclass Array
// In reply to https://gist.github.com/1100841/9c959db9314338a09c0f288c2c0ca5553816e400

function subArray () {
  var nu= Array.apply(null, arguments);
  nu.__proto__= subArray.prototype;
  return nu;
}

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// 2011-09-15 jorge@jorgechamorro.com
// http://groups.google.com/group/nodejs-dev/msg/cf392e131b5fcd3a
// http://groups.google.com/group/nodejs-dev/browse_thread/thread/922a30cf88a1b784

var ms= 5;
var ctr= 0;
var RUN= 1;

function f () {
  if (RUN) {

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var appStatus;

process.on('uncaughtException', function globalErrHandler (error) {
  
  console.log('An error happened when the appStatus was '+ appStatus);
  
  switch (appStatus) {
    case 1:  //recover from status 1
    case 2:  //idem from status 2
    case 3:  //etc.

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var crypto = require('crypto');
var key = "some keys are better than others";
var msg = "Attack Troy from within a wooden horse!";
var CYPHER = "aes256";


var test = function(msg) {
  var cypher = crypto.createCipher(CYPHER, key);
  var enc_msg = cypher.update(msg, "utf8", 'binary');
  enc_msg += cypher.final('binary');

xk

/*
problem2.js, 20110501 jorge@jorgechamorro.com

to run: $node --expose-gc problem2.js

problem2.js is just like problem.js, but does a gc() whenever a BAD happens.

After the gc() it runs fine again for quite while, so the problem must have something to do with the GC.

******************

xk

// sets kCount timeouts of no more than 5 ms using floats and using integers
// and logs the times at which they are actually triggered.

var t0;
var log= [];
var kCount= 20;
function go () {
  var i= kCount;
  var cb= f('FLOAT');