DWORD
may be masked by Unreal. You can make it visible by including these lines:
#include "AllowWindowsPlatformTypes.h"
#include <thread>
#include "HideWindowsPlatformTypes.h"
But if you just want to use a mutex, FPThreadsCriticalSection
is the way to go; unless your trying to include a third-party library that require std::mutex
. A critical section is a single process mutex, so it’s faster that asking the OS to create a resource just to synchronize two threads in the same process. You always can include your project .h
in any file to have access to the Core
Unreal module.