internal void QueueCommand(Commands.BaseCommand command)
{
if (command == null)
{
throw new ArgumentNullException("command");
}
// check whether a new command can be queued at this timing
if (RunningCommand != null)
{
Debug.Assert(RunningCommand.ExecutionPhase != Commands.CommandPhase.Pending);
if (RunningCommand.ExecutionPhase == Commands.CommandPhase.Prerequisite)
{
throw new InvalidOperationException("Command can't be queued in Prerequisite phase.");
}
}
InitializeCommand(command);
command.ValidateOnIssue();
if (RunningCommand != null && RunningCommand.ExecutionPhase == Commands.CommandPhase.Prolog)
{
Debug.Assert(m_timingGroupHead != null && m_timingGroupTail != null);
command.Next = m_timingGroupTail.Next;
m_timingGroupTail.Next = command;
m_timingGroupTail = command;
}
else
{
CommandQueue.PushTail(command, ref m_commandQueueHead, ref m_commandQueueTail);
}
}
private void QueueResourceCommand(Commands.BaseCommand command)
{
// can only queue command at head when issueing resource consuming commands
Debug.Assert(RunningCommand != null && RunningCommand.ExecutionPhase == Commands.CommandPhase.Condition);
InitializeCommand(command);
command.ValidateOnIssue();
CommandQueue.PushTail(command, ref m_resourceCommandQueueHead, ref m_resourceCommandQueueTail);
}