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Re: swapcontext() around pthreads
On Thu, Aug 09, 2012 at 08:47:51PM +0200, Martin Husemann wrote:
> On Thu, Aug 09, 2012 at 08:44:05PM +0200, Emmanuel Dreyfus wrote:
> > setjmp and longjmp are claim to not match the requirement because they
> > do not allow different stacks for each execution context.
> But there is a strong correlation between thread and stack, you can not
> switch one without the other. So what is the intended semantics if you
> setcontext() in thread A with a context created by thread B while B is
> currently running on another CPU?
Probably that the entire operating environment of B is cloned and run
in thread A, that is, that it's a magic implementation of threaded
David A. Holland
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