Provide a restart() method on a Process

[boombatower]

I wrote my own Process class on top of proc_open() before I found the Process component of Symfony2. For my use-case I need to be able to easily restart process so my class provides a restart() method that works as follows.

<?php
public function restart()
{
  $process = clone $this;
  $process->run();
  return $process;
}

public function __clone()
{
  unset($this->resource);
  unset($this->pipes);
}

It make sense to create a new Process in order to preserve the status and pipes from the last one. I have a process manager that restarts processes when they crash.

Does something like this seem acceptable? If so I will create a pull request.

[schmittjoh]

I think it's not so obvious that restart returns a new instance of Process instead of working on the instance that it was called on, but generally +1 for a restart command.