_mqcntrl

type _mqcntrl = record

  wait_queue: lwp_thrqueue;

  attr: mq_attr;

  max_pendingmsgs: cuint32;

  num_pendingmsgs: cuint32;

  max_msgsize: cuint32;

  pending_msgs: lwp_queue;

  msq_buffers: pmq_buffer;

  notify_handler: mq_notifyhandler;

  notify_arg: pointer;

  inactive_msgs: lwp_queue;

end;