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#include "stdafx.h"
#include "Memory.h"
#ifdef WINDOWS
// Is the address readable?
bool readable(const void *addr) {
if (addr == null)
return false;
MEMORY_BASIC_INFORMATION info;
SIZE_T r = VirtualQuery(addr, &info, sizeof(info));
if (r != sizeof(info))
return false;
if (info.State == MEM_FREE)
return false;
if (info.Protect == 0)
return false;
if (info.Protect & PAGE_NOACCESS)
return false;
if (info.Protect & PAGE_GUARD)
return false;
if (info.Protect & PAGE_EXECUTE) // I think this is execute only.
return false;
return true;
}
// Print some information about 'addr' for debugging.
void memFlags(const void *addr) {
MEMORY_BASIC_INFORMATION info;
SIZE_T r = VirtualQuery(addr, &info, sizeof(info));
assert(r == sizeof(info));
printf("%p:", addr);
if (info.State == MEM_FREE)
printf(" free");
if (info.Protect & PAGE_NOACCESS || info.Protect == 0)
printf(" noaccess");
if (info.Protect & PAGE_GUARD)
printf(" guard");
if (info.Protect & PAGE_EXECUTE) // I think this is execute only.
printf(" executable");
if (info.Protect & PAGE_READONLY)
printf(" readonly");
if (info.Protect & PAGE_READWRITE)
printf(" readwrite");
printf("\n");
}
#endif
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