CODEWITHSUNDEEP
cwindowsmemory-managementporting
youjustreadthis
youjustreadthis

Reputation: 652

Windows Equivalent for sys/mman.h

I'm encountering issues when trying to compile my C code on Win64. More specifically, the compiler cannot find the sys/mman.h header, which I understand is found in Unix environments only.

I already know this is deals with memory allocation.

Is there an equivalent for Windows I can use in order to port the code (first time trying)?

Code in that causes issues:

/* Allocate memory required by processes */
buf = (int*) malloc (sizeof(int));
if (!buf)
{
    perror("Error");
    free (buf);
    return -3;
}

/* Lock down pages mapped to processes */
puts("Locking down processes.");
if(mlockall (MCL_CURRENT | MCL_FUTURE) < 0)
{
    perror("mlockall");
    free (buf);
    return -4;
}

Upvotes: 6

Views: 21774

Answers (2)

Lee
Lee

Reputation: 11

I was able to get around the issue by using g++ under cygwin, making sure the g++ came from the cygwin installation (the same version specified from the installer) and not the current compiler under windows.

Upvotes: 0

Mekap
Mekap

Reputation: 2085

You should look at the mman-win32 library. But as @Mgetz pointed out, a more simple way is to look at the VirtualAllocEx functions and try to adapt your code.

Upvotes: 6

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