* \param name the name of the task (can be \c NULL)
* \param data the user data you want to associate with the task (can be \c NULL)
* \param amount amount of compute work to be done by the task
* \param name the name of the task (can be \c NULL)
* \param data the user data you want to associate with the task (can be \c NULL)
* \param amount amount of compute work to be done by the task