Re: use pthread under winCE

[James Ewing <james dot ewing at sveasoft dot com>]

Hi Benoit,

Try inserting the following:

#if defined(_ARM_)
#define PTW32_PROGCTR(Context)  ((Context).Psr)
#endif

Best Regards,

James

Benoit Raque wrote:

> Hi James,
>
> Thanks a lot for your help.
> I'm now able to compile the project for the emulator PocketPC2003 
> under eVC4.
>
> But when I try to compile for ARMv4, I get this error : 
> "pthread_cancel.c(59) : fatal error C1189: #error :  Module contains 
> CPU-specific code; modify and recompile."
> Looking at the code just before, I want to add something like that :
> #if defined(_ARM_)
> #define PTW32_PROGCTR(Context)  ((Context)."something here")
> #endif but Iar, Fir or Eip don't work.
> And I really don't know what I can put there.
>
> Thank you again.
>
> Benoit
>
> James Ewing wrote:
>
> > Hi Benoit,
> >
> > I've attached my modifications to the ptw32_getprocessors.c file that 
> > fixes the GetProcessAffinityMask for WINCE. It just forces the 
> > processor count to one.
> >
> > I looked in the pthread.h file and found that if you don't have _UWIN 
> > defined, pthreads own internal _errno will be used. Make sure _UWIN 
> > is *not* defined. See line 1143 in pthread.h.
> >
> > It was many moons ago that I tweaked pthreads for WIN32 for WINCE and 
> > I've forgotten much of what needed to be done. If anyone wants a diff 
> > of my build against the current CVS version just let me know and I'll 
> > send it out. It might be a good idea to test it a bit and then merge 
> > it into the main CVS tree. I use the same source for both WIN32 and 
> > WINCE pthreads builds.
> >
> > Best,
> >
> > James
> >
> >
> > [ ptw32_getprocessors.c]
> > ----------------------------------------------------------------------
> > /*
> > * ptw32_getprocessors()
> > *
> > * Get the number of CPUs available to the process.
> > *
> > * If the available number of CPUs is 1 then pthread_spin_lock()
> > * will block rather than spin if the lock is already owned.
> > *
> > * pthread_spin_init() calls this routine when initialising
> > * a spinlock. If the number of available processors changes
> > * (after a call to SetProcessAffinityMask()) then only
> > * newly initialised spinlocks will notice.
> > */
> > int
> > ptw32_getprocessors(int * count)
> > {
> >  int result = 0;
> >
> > #ifndef WINCE
> >  DWORD vProcessCPUs;
> >  DWORD vSystemCPUs;
> >
> >  if (GetProcessAffinityMask(GetCurrentProcess(),
> >                 &vProcessCPUs,
> >                 &vSystemCPUs))
> >    {
> >      DWORD bit;
> >      int CPUs = 0;
> >
> >      for (bit = 1; bit != 0; bit <<= 1)
> >    {
> >      if (vProcessCPUs & bit)
> >        {
> >          CPUs++;
> >        }
> >    }
> >      *count = CPUs;
> >    }
> >  else
> >    {
> >      result = EAGAIN;
> >    }
> > #else
> >  *count = 1;
> > #endif
> >  return(result);
> > // end of file 
> > -----------------------------------------------------------