Why does task manager report more memory than allocated?

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CandyMan

Joined: 04 Sep 2009
Posts: 413
Location: film "CandyMan" directed through Bernard Rose OR Candy Shop

CandyMan 05 Jul 2016, 19:30

I wrote this procedures:

Code:

GetMem:
        add     rax,8
        add     [AllocSize],rax
        push    rax
        invoke  VirtualAlloc,0,rax,MEM_COMMIT,PAGE_READWRITE
        pop     rdx
        or      rax,rax
        jz      @F
        mov     [rax],rdx
        add     rax,8
      @@:
        ret

FreeMem:or      rax,rax
        jz      @F
        sub     rax,8
        mov     rdx,[rax]
        sub     [AllocSize],rdx
        invoke  VirtualFree,rax,0,MEM_RELEASE
      @@:
        ret

AllocSize       dq 0

and I started certain code which is using them.
Why is AllocSize returning 140 KB and the manager of tasks is returning 17500 KB to the consumed memory? Where from such a divergence?

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05 Jul 2016, 19:30

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20299
Location: In your JS exploiting you and your system

revolution 06 Jul 2016, 01:33

Task manager reports all the memory used within the process, including all the DLL and system allocations, not just what your code allocates.

06 Jul 2016, 01:33

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