text: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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  var gTestfile = 'dekker.js';
  //-----------------------------------------------------------------------------
  
  var summary = "Dekker's algorithm for mutual exclusion";
  // Adapted from pseudocode in Wikipedia:
  // http://en.wikipedia.org/wiki/Dekker%27s_algorithm
  
  printStatus (summary);
  
  var N = 500;  // number of iterations
  
  // the mutex mechanism
  var f = [false, false];
  var turn = 0;
  
  // resource being protected
  var counter = 0;
  
  function worker(me) {
    let him = 1 - me;
  
    for (let i = 0; i < N; i++) {
      // enter the mutex
      f[me] = true;
      while (f[him]) {
        if (turn != me) {
          f[me] = false;
          while (turn != me)
            ;  // busy wait
          f[me] = true;
        }
      }
  
      // critical section
      let x = counter;
      sleep(0.003);
      counter = x + 1;
  
      // leave the mutex
      turn = him;
      f[me] = false;
    }
  
    return 'ok';
  }
  
  var expect;
  var actual;
  
  if (typeof scatter == 'undefined' || typeof sleep == 'undefined') {
    print('Test skipped. scatter or sleep not defined.');
    expect = actual = 'Test skipped.';
  } else {
    var results = scatter([function () { return worker(0); },
                           function () { return worker(1); }]);
  
    expect = "Thread status: [ok,ok], counter: " + (2 * N);
    actual = "Thread status: [" + results + "], counter: " + counter;
  }
  
  reportCompare(expect, actual, summary);
  