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Is it possible to call remote function in another daemon?

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Top Forums Programming Is it possible to call remote function in another daemon?
# 8  
Old 05-05-2011
Yes but it seems that this is a valuable technology.
# 9  
Old 05-05-2011
RPC was designed for remote calls between foreign systems, so it has huge complexity, which can be easily avoided for your case of two processes on the same system. I would not think twice to use plain old socket, or pipe, or messaging between them
# 10  
Old 05-06-2011
Yes I can use for example XML for example to pass structured messages between two daemons but I wan't more easy way - directly to call a function in another daemon.

Any other ideas?
# 11  
Old 05-06-2011
If it is only between two daemons then pipes should be easy. Open two pipes, one for calling functions and another one for return values.

This should be easy if only two daemons are communicating, otherwise you may have to implement some kind of sync between daemons or go with sockets.
# 12  
Old 05-06-2011
Yes but the problem is that I learn C since several weeks and I don't have idea how to implement this. Can you show me example if your idea in C?

Regards
# 13  
Old 05-06-2011
migurus & kumaran -

My reading shws that the the accepted definition of RPC is 'calling a procedure in another process'
R. Teer 2004 Solaris System Programming p 951.

Stevens has a similar definition - I don't have my copy here.

The original question was not about IPC per se. It was 'how to call a function in another daemon'. Using IPC lets you do that but it is not the main function for IPC. IPC is all about sharing data across processes. A side effect is the ability to call a function in another process.

Exposing a function entry point in a separate process is different from that. It is the whole idea behind UNIX code: Do only one thing, and do it very well.
# 14  
Old 05-06-2011
Quote:
Originally Posted by jim mcnamara

The original question was not about IPC per se. It was 'how to call a function in another daemon'. Using IPC lets you do that but it is not the main function for IPC. IPC is all about sharing data across processes. A side effect is the ability to call a function in another process.
Can you show us example how to call a remote function using a IPC. Just the code how call function. I know where to find simple IPC implementation.

Regards
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