Hi,
Here is what I want to do... in my program, I want to arbitrarily in some function 
suspend the execution of the current (self) thread and schedule my self to resume from 
that point later.

In my program, I only have 2 threads... and lets say thread 1 ends up calling a 
function foo() that will block on IO.  I dont want to make the whole system block, so 
I want to resume the execution of foo() when the IO completes and restore thread state 
so that the stack (function call history and all) is maintained.

How can I do this in Linux?

Thanks
Lee
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