public Message Receive()
{
if (m_message == null)
{
return null;
}
m_mutex.Lock();
try
{
Message msg = m_message;
m_message = null;
m_event.Reset();
return msg;
}
finally
{
m_mutex.Unlock();
}
}
internal void PutInto(Message message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
m_mutex.Lock();
try
{
if (m_message != null)
{
throw new LetterBoxIsFullException();
}
m_message = message;
m_event.Singal();
}
finally
{
m_mutex.Unlock();
}
}