thread-safe strings

[Nathan Myers]

On Wed, Mar 15, 2000 at 09:10:15AM +0100, Martin v. Loewis wrote:
> > 	I've looked over the code for basic_string a bit and see that there
> > is a problem with _M_state being accessed from multiple threads. Are
> > there other problems that I'm missing here? If not couldn't we just
> > put a mutex on _M_state?
> 
> I think there is a number of problems with it. First, you don't know
> readily what thread system you are using, and whether it has a mutex
> operation - libstdc++ should also support systems using something else
> than pthreads, as well as systems without threads.

Fortunately it's a lot less bad than Martin suggests.
 
There is no need for a mutex, thus no need for a thread library.
In other mail I posted a diff to use appropriate primitives
which must be declared appropriately for the target platform,
as noted there.

Nathan Myers
ncm@cantrip.org