Cheat Engine

supercharger

say i allocate some memory space (0x7f00000~7f10000) in a process.
if i don't free the memory space before i hit Alt+F4 to terminated the process, will the memory space be freed from the physical memory?

Slugsnack · Posted: Fri Jul 29, 2011 3:02 am Post subject:

alt-f4 closes a window by default, not exits a process. if you are just closing a window, perhaps not. if you are killing the whole process, the OS will deal with freeing memory that you forgot to free

you're also confusing physical memory with what you're accessing which is virtual memory. depending on what is currently paged in, there is a chance the memory you are referring to is on physical memory. if it's not paged in right now then it would be on disk

atom0s · Posted: Fri Jul 29, 2011 12:21 pm Post subject:

Look into using smart pointers if you are worried about allocations not being free'd as well. You can also use memory profiling tools to ensure your app is cleaning up properly after it's being told to exit.

supercharger · Posted: Sat Jul 30, 2011 12:09 am Post subject:

thanks.
in my case, it's a game that has only 1 window. when i hit Alt+F4, the whole process is closed.

i do use pointers when i allocate the memory space, and i can free the space by a function within the process.

what i worry about is that if i don't execute the "free" function before closing the game, the memory space is still ocupied until i reboot the PC. if that's true, i will use up the memory after i run the game dozens of times.

i hope WinXP cleans up everything when it kills a process.

Slugsnack · Posted: Sat Jul 30, 2011 5:05 am Post subject:

it will clean it up, yes

Anden100 · Posted: Sat Jul 30, 2011 5:41 am Post subject:

Is there any way i can minitor when memory is being allocated/deallocated, so i can see if/where im leaking?

Slugsnack · Posted: Sat Jul 30, 2011 6:25 am Post subject:

you need to search for memory profiler tools. unfortunately i don't code c++ much so can't recommend one