private void SvcArbitrateLock(AThreadState ThreadState)
{
int OwnerThreadHandle = (int)ThreadState.X0;
long MutexAddress = (long)ThreadState.X1;
int RequestingThreadHandle = (int)ThreadState.X2;
KThread OwnerThread = Process.HandleTable.GetData <KThread>(OwnerThreadHandle);
if (OwnerThread == null)
{
Logging.Warn(LogClass.KernelSvc, $"Invalid owner thread handle 0x{OwnerThreadHandle:x8}!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
return;
}
KThread RequestingThread = Process.HandleTable.GetData <KThread>(RequestingThreadHandle);
if (RequestingThread == null)
{
Logging.Warn(LogClass.KernelSvc, $"Invalid requesting thread handle 0x{RequestingThreadHandle:x8}!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
return;
}
MutualExclusion Mutex = GetMutex(MutexAddress);
Mutex.WaitForLock(RequestingThread, OwnerThreadHandle);
ThreadState.X0 = 0;
}
private void SvcWaitProcessWideKeyAtomic(AThreadState ThreadState)
{
long MutexAddress = (long)ThreadState.X0;
long CondVarAddress = (long)ThreadState.X1;
int ThreadHandle = (int)ThreadState.X2;
ulong Timeout = ThreadState.X3;
KThread Thread = Process.HandleTable.GetData <KThread>(ThreadHandle);
if (Thread == null)
{
Logging.Warn(LogClass.KernelSvc, $"Invalid thread handle 0x{ThreadHandle:x8}!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
}
Process.Scheduler.Suspend(Thread.ProcessorId);
MutualExclusion Mutex = GetMutex(MutexAddress);
Mutex.Unlock();
if (!GetCondVar(CondVarAddress).WaitForSignal(Thread, Timeout))
{
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.Timeout);
return;
}
Mutex.WaitForLock(Thread);
Process.Scheduler.Resume(Thread);
ThreadState.X0 = 0;
}