I'm little confuse about VirtualAlloc, We can reserve memory use MEM_RESERVE, and then commit it use MEM_COMMIT, but I'm little confuse about what the difference when use between below two functio...

I am trying to use VirtualAlloc to reserve and commit a block of memory and then again to extend that block. Unfortunately, it is returning NULL with error ERROR_INVALID_ADDRESS despite VirtualQuer...

I can't sleep! :) I have a reasonably large project on Windows and encountered some heap corruption issues. I have read all SO, including this nice topic: How to debug heap corruption errors?, how...

For what do I need to use VirtualAlloc/VirtualAllocEx? An example, one case that I found - if I allocated 4 GB of virtual memory, then if I do not use all of them, then I do not spend physical mem...

I am writing a C++ program that essentially works with very large arrays. On Windows, I am using VirtualAlloc to allocate memory to my arrays. Now I fully understand the difference between reservin...

I have a small file, I go over it and count the number of bytes in it: while(fgetc(myFilePtr) != EOF) { numbdrOfBytes++; } Now I allocate virtual memory of the same size: BYTE* myBuf = (BYTE...

Windows has VirtualAlloc, which allows you to reserve a contiguous region of address space, but not actually use any physical memory. Later when you want to use it (or part of it) you call VirtualA...