AWE module version 1.0 ...

aminer10 — Wed, 14 Apr 2010 19:56:06 GMT

Hello,

A nice module that you can use with ParallelHashList...

Description:

Why the 2 GB limitation on the Win 32bits systems ?

My AWE object pascal module is here, it allows your application
to use up to 64GB of RAM.

And here is the public interface of TAWEStorage class,
i have implemented the follow methods:

TAWEStorage = class(TObject)
public

Size:longword;
position:longword;
PageSize:integer;

constructor Create();
destructor Destroy(); override;
function GetMem(ulBytes: ULONG): BOOL;
function FreeMem(): BOOL;
function HowManyPagesAllocated(): ULONG;
function CopyFrom(in_stream:TMemoryStream;count:longint):longint;
function CopyTo(out_stream:TMemoryStream;count:longint):longint;
function Read(var Buffer;count:longint):longint;
function Write(const Buffer;count:longint):longint;
function ToString:string;

end;

Note: To be able to use AWE you have to set the user rights
correctly,
so,go to: Control Panel -> Administrative tools -> Local Security
Policy
-> User Rights Assignment and give 'Lock pages in memory' right
to the user that wants to use AWE.

Every TAWStorage object can go up to 4GB , and you can go up to
64GB !

You can download my AWE module from:

http://pages.videotron.com/aminer/

TAWEStorage is very easy to use, here is an example:

-------------------------------------------------

program test;

uses AWE,classes;

var
awe1:TAWEStorage;
ptr:pointer;
fstream1:TFileStream;
stream1,stream2:TMemoryStream;

Function StringToStream(const AString: string): TMemoryStream;
begin
Result := TMemoryStream(TStringStream.Create(AString));
end;

begin

stream2:=TMemoryStream.create;

fstream1:=TFileStream.create('test.txt',fmCreate);

stream1:=StringToStream('Hello world !');
awe1:=TAWEStorage.create;

writeln;
if awe1.getmem(stream1.size)
then writeln('Memory was reserved...')
else writeln('Memory was not reserved...');

writeln('Number of pages allocatd is: ',awe1.HowManyPagesAllocated);

if awe1.CopyFrom(stream1,stream1.size) <> 0
then writeln('CopyFrom ok ...')
else writelN('CopyFrom not ok ..');

awe1.position:=0;
awe1.CopyTo(stream2,awe1.size);

stream2.position:=0;
fstream1.copyfrom(stream2,stream2.size);
stream2.position:=0;
fstream1.position:=0;

writeln(awe1.tostring);

awe1.freemem;
awe1.free;
end.

--------------------------------------------------------------

Sincerely,
Amine Moulay Ramdane.

topic AWE module version 1.0 ... in Intel® Moderncode for Parallel Architectures

AWE module version 1.0 ...