about daemons and IPC

[sdistefano]

Hey people!
For the first time I'm doing a client/server application, and I'm
really confused with IPC stuff.

I read the fastest method is shared memory, but I tryed mmap and found
it tedious for the amount of data I'm handling (which is 30K at most,
but mmap seems to get tedious for anything bigger than a boolean... am
I missing something?)

Then I found many solutions for forked processes (like posh), but
that's not what I need right now.

Any suggestions?

[Paul Rubin]

sd********@gmail.com writes:

For the first time I'm doing a client/server application, and I'm
really confused with IPC stuff.

Client-server applications are traditionally done with sockets.

I read the fastest method is shared memory, but I tryed mmap and found
it tedious for the amount of data I'm handling (which is 30K at most,
but mmap seems to get tedious for anything bigger than a boolean... am
I missing something?)

Mmap is missing any kind of locks, semaphores, etc. There was an shm
module that included this stuff but I don't know what's happened to it.
It's really unfortunate that it was never included with Python.

[Gabriel Genellina]

At Sunday 27/8/2006 00:01, sd********@gmail.com wrote:

>Hey people!
For the first time I'm doing a client/server application, and I'm
really confused with IPC stuff.

I read the fastest method is shared memory, but I tryed mmap and found
it tedious for the amount of data I'm handling (which is 30K at most,
but mmap seems to get tedious for anything bigger than a boolean... am
I missing something?)

I'm a bit confused - you mean client/server running both on the same
machine, right? Else, shared memory is of no use.
Sockets are used, usually, but depends on your needs.

>Then I found many solutions for forked processes (like posh), but
that's not what I need right now.

Perhaps you can tell what you are trying to do...?
Gabriel Genellina
Softlab SRL

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[flupke]

sd********@gmail.com schreef:

Hey people!
For the first time I'm doing a client/server application, and I'm
really confused with IPC stuff.

I read the fastest method is shared memory, but I tryed mmap and found
it tedious for the amount of data I'm handling (which is 30K at most,
but mmap seems to get tedious for anything bigger than a boolean... am
I missing something?)

Then I found many solutions for forked processes (like posh), but
that's not what I need right now.

Any suggestions?

You can also use RPC or even use a framework to do that for you like
Twisted. I like both approaches because they simplify communications.
For Twisted you have the initial investement in getting to know it but
it's also a lot more versatile

[Irmen de Jong]

sd********@gmail.com wrote:

Hey people!
For the first time I'm doing a client/server application, and I'm
really confused with IPC stuff.

[...]

Any suggestions?

http://pyro.sourceforge.net

depending on your needs....

--Irmen