A CSP library "for dummies"?

[Ruth Ivimey-Cook <Ruth.Ivimey-Cook@xxxxxxxxxx>]

Folks,

Is there a CSP-type threads library that is compilable using only a C 
compiler on Windows/MacOSX/Linux?

I'm trying to wean some folks at work off pthreads and suggested 
libc++csp, but it's C++ roots rule it out. I guess it could probably be 
ported, but that's not going to make it more appealing. I know of RB's 
libcsp, but have been slightly put off just because it seems very old 
now and wonder how "supported" it is.

Finally, in a mail to a developer here I wrote:

/"RIC: Finally, it is interesting to note that cooperative scheduling is 
*very* much more efficient than preemptive scheduling; the trick is to 
write the scheduling points into the code using the compiler, making it 
less likely that one thread starves others."/

/"AJCD: //Also, cooperative scheduling ultimately relies on state 
machines, which are hard to debug and maintain, and tend to rely more on 
heap allocation than stack allocation."/

Now, I don't think AJCD's point about state machines is quite valid in 
this context as I think he's thinking about big switch statements of 
bits of code and a loop, but he's an intelligent guy: any thoughts on a 
good reply?

Going back to my comment, are there any C compilers that have/can be 
"instrumented" to do the "inject-scheduling point" thing, with suitable 
library support. All I can think of is Handel-C, which is not appropriate.

Thanks, and Merry Christmas to you all!

Ruth