17 Oct
2008
17 Oct
'08
6:02 p.m.
On Fri, Oct 17, 2008 at 09:26:45PM +0200, Joern Nettingsmeier wrote:
i see. but what about the other scenario:
thread A reads read_ptr.
thread B runs and increments it.
thread A increases the old (wrong) read_ptr value by one and writes a
wrong value.
isn't that a problem here?
This can't happen. For both read_ptr and write_ptr
only *one* of the two sides will ever modify it.
That is really the basic idea behind all this.
The other side just reads it, and will never read
a value that could trigger an error.
side.
Ciao,
--
FA
Laboratorio di Acustica ed Elettroacustica
Parma, Italia
Lascia la spina, cogli la rosa.