Re: rpcgen on linux does not generate multithreaded svc code

Linux's RPC code appears to be based on a very old iteration of SunRPC 
that was put into public domain quite some time ago. The later revs, 
which are not public domain, included support for (actually the 
migration to) TLI with protocol independence. Subsequently TLI was 
stillborn, but whatever.

In any case, as far as I know only Sun's RPC intrinsically supports 
threads. I have never seen another implementation that does.

You can do your own threading, if nothing else by editing the 
generated files, but it's not clear that the RPC routines themselves 
are thread safe - in fact I would guess they are not based on the fact 
that they usual a lot of global data.

Personally I'd love to see a thread safe RPC for Linux, but it's 
probably not worth the effort. A better bet would be to maybe use XML 
RPC if you can (though that doesn't seem to have the same depth of 
capabilities).

Unfortunately, to get threading, you'll probably either have to add a 
lot of hacks, or write your own socket code and API getting rid of RPC.

			- Matt

ashish borkar wrote:
> Hello,
>      In linux the rpcgen command does not generate multithreaded code.
> When I run the rpcgen command on a .x file with -M option (-M generate 
> MT-safe code) in SUN it generates code whose main() has this line:
>            int mode = RPC_SVC_MT_AUTO;
> But when I run the rpcgen -M command in Linux the code generated is very 
> different and does not have         int mode = RPC_SVC_MT_AUTO;
> Due to this during stress test(i.e. multiple parallel requests) to 
>  the rpc server on Linux the client gets many RPC failed error 
> messages.This does not happen in SUN.
> Also when I log the thread id in a log file it shows only a single 
> thread which suggests that the svc code is not multithreaded.
> What is the solution for this?
> Thanks & Regards
> Ashish
>  
> 
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