Question

I’m trying to use the function GetProcessMemoryInfo of psapi.h inside a C++ application on Windows 7 32-bit.

I followed some tutorial and I did something like:

PPROCESS_MEMORY_COUNTERS pMemCountr;

pMemCountr = new PROCESS_MEMORY_COUNTERS();
bool result = GetProcessMemoryInfo(GetCurrentProcess(),
                                   pMemCountr,
                                   sizeof(PPROCESS_MEMORY_COUNTERS));

The problem is that i always obtain “false” from the execution of the GetProcessMemoryInfo() method. What am I doing wrong here?

Answer 1

The problem is

sizeof(PPROCESS_MEMORY_COUNTERS)

yields the size of PPROCESS_MEMORY_COUNTERS which is a PROCESS_MEMORY_COUNTERS* type pointer (note double P in the beginning).

What you want is

sizeof(PROCESS_MEMORY_COUNTERS)

Also you’ll be much better off without new here:

PROCESS_MEMORY_COUNTERS memCounter;
BOOL result = GetProcessMemoryInfo(GetCurrentProcess(),
                                   &memCounter,
                                   sizeof( memCounter ));