Re: Mixing threaded and non-threaded

Steve Atkins wrote:
> > My guess is that creating applications against the non-thread libpq and
> > then replacing it with a threaded libpq is your problem. 
> 
> Yes. It seems to make no difference whether the application is rebuilt
> or not. It's pulling libpthread into a non-thread-aware application
> that's the problem.
> 
> The only fix that would allow the non-threaded application to work
> with a thread-safe libpq would be to rewrite it to be a threaded
> application with a single active thread.


Woh, as far as I know, any application should run fine with -lpthread,
threaded or not.  What OS are you on?  This is the first I have heard of
this problem.

> > I guess the
> > question is whether you would like to have two libpq's and have to
> > decide at link time if you wanted threading, or just have one libpq and
> > make sure you recompile if you change the threading behavior of the
> > library.  We considered the later to be clearer.
> 
> Recompiling doesn't neccesarily help unless the application is also
> rewritten. Also, if there are dozens of non-threaded applications
> using libpq on a system (possibly installed via rpms or equivalent)
> then replacing the system libpq could break something else.

Why?  How would you rewrite it?

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