[fpc-devel] Threading support and C library under Linux/Unix

[Michael Schnell]

On 06/23/2010 09:26 PM, Florian Klämpfl wrote:
> I'am sure if it's a problem for somebody, he will find a solution and
> send a patch.
>   
As the swap instruction seems to be the only atomic memory operation ARM
lower than v6 can do, there is no possible workaround in user space
software.

For a single CPU system the Kernel might provide a "atomic area"
functionality to help with this.

-Michael