L4 IPC doubt

Ronald Aigner ra3 at os.inf.tu-dresden.de
Mon May 2 17:40:33 CEST 2005

Tiago Jorge wrote on 05/02/05 17:13 this:
>>And the blocking szenario is:
>>- C1 calls S.
>>- S calls F, but blocks in the send phase of the call.
>>Did I get it right now? (The respective code snippets or IDL would be 
> yep... thats the problem.
> if i use the emulated szenario explained above, the ipc between S<->F 
> works... if i put the client the S<->F does not work...:(
> my doubt remains... why can't i do the second IPC? because i've debugged 
> the client stubs and the server-side stubs and i've realized that S 
> blocks in the ipc_send, the call never arrives on the server...
Ok. understood it now ;) To answer your original question: Of course 
there may be multiple IPCs in progress at one moment in time.

But to solve your problem wh S blocks, sources would be helpful.

Greetings, Ron.
Mit freundlichen Gruessen / with regards
ra3 @ inf.tu-dresden.de

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