// detect if the OS we are running on is 64 or 32bit
// we only care when building on Intel for 32bit
QString SubsurfaceSysInfo::osArch()
{
QString res = "";
#if defined(Q_PROCESSOR_X86_32)
#if defined(Q_OS_UNIX)
struct utsname u;
if (uname(&u) != -1) {
res = u.machine;
}
#elif defined(Q_OS_WIN)
/* this code is from
* http://mark.koli.ch/reliably-checking-os-bitness-32-or-64-bit-on-windows-with-a-tiny-c-app
* there is no license given, but 5 lines of code should be fine to reuse unless explicitly forbidden */
typedef BOOL (WINAPI *IW64PFP)(HANDLE, BOOL *);
BOOL os64 = FALSE;
IW64PFP IW64P = (IW64PFP)GetProcAddress(
GetModuleHandle((LPCSTR)"kernel32"), "IsWow64Process");
if(IW64P != NULL){
IW64P(GetCurrentProcess(), &os64);
}
res = os64 ? "x86_64" : "i386";
#endif
#endif
return res;
}
QVariant Windows::getOsArchitecture(){
BOOL res = FALSE;
// When this application is compiled as a 32-bit app,
// and run on a native 64-bit system, Windows will run
// this application under WOW64. WOW64 is the Windows-
// on-Windows subsystem that lets native 32-bit applications
// run in 64-bit land. This calls the kernel32.dll
// API to see if this process is running under WOW64.
// If it is running under WOW64, then that clearly means
// this 32-bit application is running on a 64-bit OS,
// and IsWow64Process will return true.
IW64PFP IW64P = (IW64PFP)GetProcAddress(GetModuleHandle (L"kernel32"), "IsWow64Process");
if(IW64P != NULL){
IW64P(GetCurrentProcess(), &res);
}
if(res){
return "x86_64";
}
return "i386";
}