How to get current CPU and RAM usage in C++?

Question

is it possible, in C++, to get the current RAM and CPU usage? Is there a platform-indepentent function call?

Answer 1

I notice that ACE is ported to vcpkg which would make it easy to compile & link a cross-platform C++ app.

In C++ I'd like to monitor available system CPU and memory resources, so that my app can flex its consumption in response to resource availability.

Is anyone please able to offer an ACE code snippet to get started on this?

Answer 2

There is an open source library that gives these (and more system info stuff) across many platforms: SIGAR API

I've used it in fairly large projects and it works fine (except for certain corner cases on OS X etc.)

Answer 3

Sadly these things rely heavily on the underlying OS, so there are no platform-independent calls. (Maybe there are some wrapper frameworks, but I don't know of any.)

On Linux you could have a look at the getrusage() function call, on Windows you can use GetProcessMemoryInfo() for RAM Usage. Have also a look at the other functions in the Process Status API of Windows.