HTDJ Threads

HTDJ THREADS

• HTDJ has the main MFC UI thread, and additional threads to talk to the STDJ server(s).
• The main thread contains a STDJInterface object.
• For every active server, one or more threads are available to talk to that server.
• Typically, there is one main server thread, plus additional threads for each file transer.

   organization
   ------------
   
       STDJInterface
           server list
           sendtoserver
               stuffs TO into server's q/a cache
               signals via event to send
           
           server contains
               server details
               main thread
                   server q/a cache
                   pointer back to server object
                   pointer back to stjdinterface, for sending notifications
                   ping()
                       SendServerPing
                           SendToServer - WRONG
                           this should send directly, not via event
                           just lock and add to the cache, then call sendquestions()
                           
                   sendquestions()
                       the http workhorse!
                       calls ReceiveFromServer() (ie receive())
                       
                   receive()
               
               extra threads created for file transfers
                   same exact format as main thread
                   just seperate http channel to optimize bandwidth
                   allows for a "calibrate to maximize bandwidth" function
                   more than one thread may be desired for one file transfer

	STDJThread::Main()						runs all day long waiting for signals
		m_pThis->m_pSTDJ->PingServers();	if no requests are made before timeout, just send pings
		m_pThis->m_pSTDJ->SendQuestions();	the only other event is NewQuestionEvent, send right away

HTDJ Thread Safety Rules