Subj : Re: [.NET] Volatile Fields
To   : comp.programming.threads
From : Cool Guy
Date : Sat Sep 17 2005 01:31 pm

David Hopwood <david.nospam.hopwood@blueyonder.co.uk> wrote:

> It doesn't need to be. Because 'finished' is volatile, the assignment
> "finished = true;" causes previous writes by Thread2 (whether or not they
> are to volatile variables) to be "performed" before the write to 'finished'.
> This is what the page means by 'A volatile write has "release semantics"'.

But couldn't *result* be written to a cache instead of to main memory?

> In addition, the access to 'finished' in "if (finished) ..." guarantees
> that writes performed before 'finished' became true are visible to the
> Main thread. This is what the page means by 'A volatile read has "acquire
> semantics"'.

But couldn't *result* be read from a cache instead of from main memory?

.