FiveTech Software tech support forums

Hello.

In errsysw.prg, nExtMem() does not indicate my 6 GB of Ram.

It only says 1 megs:

Hardware memory: 1 megs

Also, it may cause internal problems to FWH, as it points out no memory, when in fact it is plenty of gbs!!.

Hello,

Is there any update?.

Thanks

John,

Please run this and let us know what you get, thanks:

MsgInfo( Int( nExtMem() / ( 1024 * 1024 * 1024 ) ) + 1 )

Antonio,

I just get 1.

Thanks.

Here we get 2 which it is right,

Could someone else test it and report the result here ? thanks

I get 2, which is right too.

EMG

I get 1, wich is wrong.

Felix

Are you using latest FWH?

EMG

Enrico,

yes and Harbour 3.

Felix

I have 8 GB of RAM, so I can´t get 1!!

FWH function nExtMem() is a simple wrapper to the Windows API function GlobalMemoryStatus() :

http://msdn.microsoft.com/en-us/library/aa366586(v=VS.85).aspx

that fills a struct:

http://msdn.microsoft.com/en-us/library/aa366772(v=VS.85).aspx

In that struct we check the value of dwTotalPhys that as the API explains:

The amount of actual physical memory, in bytes.

FWH code:

Code: Select all  Expand view

HB_FUNC( NEXTMEM ) // --> nHardwareMemory
{
   MEMORYSTATUS mst;

   mst.dwLength = sizeof( MEMORYSTATUS );

   GlobalMemoryStatus( &mst );

   hb_retnl( mst.dwTotalPhys );
}

Our code does nothing except the call to Windows API, so the question is; is that WIndows API function failing ?

Hi Antonio,

Antonio Linares wrote:FWH function nExtMem() is a simple wrapper to the Windows API function GlobalMemoryStatus() :
Our code does nothing except to call to Windows API, so the question is; is that WIndows API function failing ?

Have a look here: http://msdn.microsoft.com/en-us/library/aa366586.aspx:

On computers with more than 4 GB of memory, the GlobalMemoryStatus function can return incorrect information, reporting a value of –1 to indicate an overflow. For this reason, applications should use the GlobalMemoryStatusEx function instead.

Ruediger,

Thanks for the info, I wasn't aware of this API function. So this is the new code to test:

Code: Select all  Expand view

HB_FUNC( NEXTMEM ) // --> nHardwareMemory
{
   MEMORYSTATUSEX mst;

   mst.dwLength = sizeof( MEMORYSTATUSEX );

   GlobalMemoryStatusEx( &mst );

   hb_retnl( mst.ullAvailPhys );
}

we could also try:

   hb_retnll( mst.ullAvailPhys );

The correct is:

Code: Select all  Expand view

hb_retnll( mst.ullTotalPhys );

I got 8.

So I hope MsgInfo( Int( nExtMem() / ( 1024 * 1024 * 1024 ) ) + 1 ) refers to 8 GB.

Is it correct?.

Thanks,.

Yes, it seems so