blockchain-link/lib/concurrent.js

Link - The Blockchain File Sharing Protocol

// Generated by CoffeeScript 1.6.3
(function() {
  var Semaphore, ThreadBarrier,
    __slice = [].slice;

  ThreadBarrier = (function() {
    function ThreadBarrier(parties, block) {
      this.parties = parties;
      this.block = block;
    }

    ThreadBarrier.prototype.join = function() {
      var args;
      args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      --this.parties;
      if (this.parties < 1) {
        return this.block.apply(this, args);
      }
    };

    return ThreadBarrier;

  })();

  Semaphore = (function() {
    function Semaphore() {
      this.waiting = [];
      this.inUse = false;
    }

    Semaphore.prototype.acquire = function(block) {
      if (this.inUse) {
        return this.waiting.push(block);
      } else {
        this.inUse = true;
        return block();
      }
    };

    Semaphore.prototype.release = function() {
      if (this.waiting.length > 0) {
        return this.waiting.shift()();
      } else {
        return this.inUse = false;
      }
    };

    return Semaphore;

  })();

  exports.ThreadBarrier = ThreadBarrier;

  exports.Semaphore = Semaphore;

}).call(this);