<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_sg0vhvv89kvhd36q0i2isu76kr, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
sclass DoubleVar {
  double a; // you can access this directly if you use one thread
  
  public synchronized void set(double v) {
    if (v != a) {
      a = v;
      notifyAll();
    }
  }
  
  public synchronized double get() { ret a; }

  synchronized double waitForValue(double x) ctex {
    while (a != x) wait();
    ret a;
  }
  
  toString { ret str(this!); }
}