[9fans] good CSP practice

["Steve Simon" <steve@quintile.net>]

As an uneducated programmer, used to threads,
semaphores, mutexes and queues, I am embarking on
a multithreaded file server.

My server speaks a protocol on a network socket,
and exposes a virtual file system containing both
data and control files.

the data file maps directly to a Channel, but the control
file can take several different types of message.

Should I create a Channel for each type or message or should
I have a single control file and messages of the form:

	struct Msg {
		int type;
		char *ctrlmsg;
	};

and then demultiplex in my receiving thread?

I know Channels and Threads are cheap but is it good practice
to use them with impunity?


[I remembers a lecture on the Transputer -
"just think of creatinga process as being as cheap as a
function call" ]

-Steve