static int mw_rename_w32_atomic(const char* oldf, const char* newf)
{
HANDLE tx;
tx = __CreateTransaction(NULL, NULL, 0, 0, 0, 0, L"AtomicFileRenameTransaction");
if (!tx)
{
mwPerrorW32("Failed to create transaction for renaming '%s' to '%s'", oldf, newf);
return 1;
}
if (!__MoveFileTransacted(oldf, newf, NULL, NULL, MOVEFILE_REPLACE_EXISTING, tx))
{
mwPerrorW32("Failed to move file '%s' to '%s'", oldf, newf);
return 1;
}
if (!__CommitTransaction(tx))
{
mwPerrorW32("Failed to commit move of '%s' to '%s'", oldf, newf);
return 1;
}
if (!CloseHandle(tx))
{
mwPerrorW32("Failed to close transaction handle for move of '%s' to '%s'", oldf, newf);
return 1;
}
return 0;
}
/* The transactional stuff is only available on Vista and later */
static void initW32TransactionalFunctions()
{
HMODULE ktm32Lib;
HMODULE kernel32Lib;
transactionFuncsInit = TRUE;
kernel32Lib = LoadLibrary("Kernel32.dll");
if (!kernel32Lib)
{
mwPerrorW32("Could not load Kernel32.dll");
return;
}
ktm32Lib = LoadLibrary("KtmW32.dll");
if (!ktm32Lib)
{
mwPerrorW32("Could not load Ktm32.dll");
return;
}
__CreateTransaction = GetProcAddress(ktm32Lib, "CreateTransaction");
__CommitTransaction = GetProcAddress(ktm32Lib, "CommitTransaction");
__MoveFileTransacted = GetProcAddress(kernel32Lib, "MoveFileTransactedA");
transactionFuncsOK = (__CreateTransaction && __MoveFileTransacted && __CommitTransaction);
if (!transactionFuncsOK)
{
mw_printf("Failed to get transaction functions\n");
}
}
int mwSetProcessPriority(MWPriority priority)
{
HANDLE handle;
DWORD pClass;
if (!DuplicateHandle(GetCurrentProcess(),
GetCurrentProcess(),
GetCurrentProcess(),
&handle,
0,
FALSE,
DUPLICATE_SAME_ACCESS))
{
mwPerrorW32("Failed to get process handle");
return 1;
}
pClass = mwPriorityToPriorityClass(priority);
if (!SetPriorityClass(handle, pClass))
{
mwPerrorW32("Failed to set process priority class to %ld", pClass);
return 1;
}
return 0;
}
int nbDetachSharedScene(NBodyState* st)
{
#if USE_POSIX_SHMEM
if (st->scene)
{
if (shm_unlink(st->scene->shmemName) < 0)
{
mwPerror("Closing shared scene memory '%s'", st->scene->shmemName);
return 1;
}
}
#elif USE_WIN32_SHARED_MAP
if (st->scene)
{
if (!UnmapViewOfFile((LPCVOID) st->scene))
{
mwPerrorW32("Error unmapping shared scene memory");
return 1;
}
}
#endif /* USE_POSIX_SHMEM */
st->scene = NULL;
return 0;
}
int mwOSHasAVXSupport(void)
{
OSVERSIONINFOEX vInfo;
vInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
if (!GetVersionEx(&vInfo))
{
mwPerrorW32("Error getting Windows version info");
return FALSE;
}
/* Windows 7 SP1 or greater required. Can't find a real way to check. */
return (vInfo.dwMajorVersion > 6)
|| (vInfo.dwMajorVersion == 6 && vInfo.dwMinorVersion >= 1 && vInfo.wServicePackMajor >= 1);
}
