I know how to get the System memory use using GlobalMemoryStatusEx, but that tells me the what the entire OS is using.
I really want my program to report how much memory it alone has allocated and is using.
Is there any way within my Delphi 2009 program to call either a Windows function or maybe some FastMM function to find out the memory that has been allocated by my program alone?
Revisiting my question, I have now changed my accepted answer to the GetMemoryManagerState answer by @apenwarr. It produced identical results to the GetHeapStatus function (now deprecated) that I used to use, whereas GetProcessMemoryInfo.WorkingSetSize gave a very different result.
You can get useful memory usage information out of the Delphi runtime without using any direct Win32 calls:
unit X;
uses FastMM4; //include this or method will return 0.
....
function GetMemoryUsed: UInt64;
var
st: TMemoryManagerState;
sb: TSmallBlockTypeState;
begin
GetMemoryManagerState(st);
result := st.TotalAllocatedMediumBlockSize
+ st.TotalAllocatedLargeBlockSize;
for sb in st.SmallBlockTypeStates do begin
result := result + sb.UseableBlockSize * sb.AllocatedBlockCount;
end;
end;
The best thing about this method is that it's strictly tracked: when you allocate memory, it goes up, and when you deallocate memory, it goes down by the same amount right away. I use this before and after running each of my unit tests, so I can tell which test is leaking memory (for example).