[fpc-pascal] Where is IsMultiThreaded set under Linux?

[Jonas Maebe]

On 08 Oct 2010, at 13:33, Graeme Geldenhuys wrote:

> Is it the line with InterlockedExchange() call?

Yes.

> The reason I ask, I'm
> using FPC 2.4.3 under 64-bit linux and using fpGUI. All other
> platforms has a clear 'IsMultiThreaded := True' in the RTL code,

Multiple threads may be started simultaneously, so setting/checking  
IsMultiThreaded must be done atomically if it's done inside a new  
thread's execution context.

> but
> not for Unix. It seems CheckSynchronized() is never called in
> fpGUI/X11 because IsMultiThread is never True, even though I have
> 'cthreads' unit defined as the first unit in my fpGUI program.

As Sven mentioned, IsMultiThread only becomes true after the first  
thread has been started.


Jonas