On 5 March 2013 09:40, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > On 5 March 2013 09:27, David Paterson wrote: >> >> In addition to Jonathan's answer on the use of "volatile", it's worth adding >> that it's not only used for memory mapped hardware. There are many other >> uses, such as inter-thread communication, or indeed the example you >> show below. > > Only in broken code. LOL - well, it depends on your definition of "broken"... > volatile is not for multithreading, you need proper synchronization > for interthread communication. Not always. For very simple, non-critical uses you can just use a volatile flag-type variable. Cheap and nasty, I agree, but useable. Regards, David P.
