public KThread(Kernel kernel, KModule module, KPartition partition, string name, uint entryAddress, int priority, KThreadAttributes attributes, uint stackSize)
{
Debug.Assert(partition != null);
Kernel = kernel;
Name = name;
EntryAddress = entryAddress;
InitialPriority = priority;
Priority = priority;
Attributes = attributes;
Module = module;
State = KThreadState.Stopped;
ExitWaiters = new FastLinkedList <KThread>();
NotifiedCallbacks = new FastLinkedList <KCallback>();
//if( stackSize < 65535 )
//{
// Log.WriteLine( Verbosity.Normal, Feature.Bios, "KThread: attempt to allocate thread with a stack of {0} - forcing up to the minimum of 64K", stackSize );
// stackSize = 65535;
//}
RunClocks = 0;
InterruptPreemptionCount = 0;
ThreadPreemptionCount = 0;
Partition = partition;
StackBlock = partition.Allocate(string.Format("Thread '{0}' Stack", name), KAllocType.High, 0, stackSize);
Debug.Assert(StackBlock != null);
TlsBlock = partition.Allocate(string.Format("Thread '{0}' TLS", name), KAllocType.High, 0, 0x4000); // 16k of thread local storage --- enough?
Debug.Assert(TlsBlock != null);
}
public void Start(uint argumentsLength, uint argumentsPointer)
{
uint[] registers = new uint[32];
registers[4] = argumentsLength;
registers[5] = argumentsPointer;
registers[6] = 0;
if (TlsBlock != null)
{
registers[26] = TlsBlock.Address; // TLS
}
else
{
registers[26] = 0;
}
registers[28] = GlobalPointer; // gp - set by cpu?
registers[29] = StackBlock.UpperBound;
ContextID = Kernel.Cpu.AllocateContextStorage(EntryAddress, registers);
State = KThreadState.Ready;
if (Diag.IsAttached == true)
{
Breakpoint bp = new Breakpoint(Diag.Instance.Client.AllocateID(), BreakpointType.Stepping, this.EntryAddress);
Diag.Instance.CpuHook.AddBreakpoint(bp);
}
Kernel.Threads.Add(this);
this.AddToSchedule();
}
public bool CheckCallbacks( KThread thread )
{
Debug.Assert( thread != null );
if( thread.NotifiedCallbacks.Count == 0 )
return false;
Debug.Assert( _runningUserCall == false );
Debug.Assert( _runningCallback == null );
if( this.ActiveThread != thread )
{
Debug.Assert( ( thread.State == KThreadState.Waiting ) || ( thread.State == KThreadState.WaitSuspended ) );
_oldThread = this.ActiveThread;
this.ActiveThread = thread;
}
_oldThreadState = thread.State;
thread.State = KThreadState.Ready;
KCallback callback = thread.NotifiedCallbacks.Dequeue();
Log.WriteLine( Verbosity.Verbose, Feature.Bios, "Kernel::CheckCallbacks: issuing callback {0} on thread {1} (thread was {2})", callback.UID.ToString( "X" ), this.ActiveThread.UID.ToString( "X" ), _oldThread.UID.ToString( "X" ) );
_runningCallback = callback;
// Format is arg1, arg2, commonAddress
// arg1 = passed during notify
// arg2 is passed during notify and given to use in argument
Cpu.MarshalCall( this.ActiveThread.ContextID, callback.Address, new uint[] { callback.NotifyCount, callback.NotifyArguments, callback.CommonAddress }, new MarshalCompleteDelegate( this.CallbackComplete ), 0 );
return true;
}
public bool CheckCallbacks(KThread thread)
{
Debug.Assert(thread != null);
if (thread.NotifiedCallbacks.Count == 0)
{
return(false);
}
Debug.Assert(_runningUserCall == false);
Debug.Assert(_runningCallback == null);
if (this.ActiveThread != thread)
{
Debug.Assert((thread.State == KThreadState.Waiting) || (thread.State == KThreadState.WaitSuspended));
_oldThread = this.ActiveThread;
this.ActiveThread = thread;
}
_oldThreadState = thread.State;
thread.State = KThreadState.Ready;
KCallback callback = thread.NotifiedCallbacks.Dequeue();
Log.WriteLine(Verbosity.Verbose, Feature.Bios, "Kernel::CheckCallbacks: issuing callback {0} on thread {1} (thread was {2})", callback.UID.ToString("X"), this.ActiveThread.UID.ToString("X"), _oldThread.UID.ToString("X"));
_runningCallback = callback;
// Format is arg1, arg2, commonAddress
// arg1 = passed during notify
// arg2 is passed during notify and given to use in argument
Cpu.MarshalCall(this.ActiveThread.ContextID, callback.Address, new uint[] { callback.NotifyCount, callback.NotifyArguments, callback.CommonAddress }, new MarshalCompleteDelegate(this.CallbackComplete), 0);
return(true);
}
public void Exit(int code)
{
State = KThreadState.Dead;
this.RemoveFromSchedule();
ExitCode = code;
while (ExitWaiters.Count > 0)
{
KThread thread = ExitWaiters.Dequeue();
thread.Wake(0);
}
}
public void Start( uint argumentsLength, uint argumentsPointer )
{
uint[] registers = new uint[ 32 ];
registers[ 4 ] = argumentsLength;
registers[ 5 ] = argumentsPointer;
registers[ 6 ] = 0;
if( TlsBlock != null )
registers[ 26 ] = TlsBlock.Address; // TLS
else
registers[ 26 ] = 0;
registers[ 28 ] = GlobalPointer; // gp - set by cpu?
registers[ 29 ] = StackBlock.UpperBound;
ContextID = Kernel.Cpu.AllocateContextStorage( EntryAddress, registers );
State = KThreadState.Ready;
if( Diag.IsAttached == true )
{
Breakpoint bp = new Breakpoint( Diag.Instance.Client.AllocateID(), BreakpointType.Stepping, this.EntryAddress );
Diag.Instance.CpuHook.AddBreakpoint( bp );
}
Kernel.Threads.Add( this );
this.AddToSchedule();
}
public void Exit( int code )
{
State = KThreadState.Dead;
this.RemoveFromSchedule();
ExitCode = code;
while( ExitWaiters.Count > 0 )
{
KThread thread = ExitWaiters.Dequeue();
thread.Wake( 0 );
}
}
public KThread( Kernel kernel, KModule module, KPartition partition, string name, uint entryAddress, int priority, KThreadAttributes attributes, uint stackSize )
{
Debug.Assert( partition != null );
Kernel = kernel;
Name = name;
EntryAddress = entryAddress;
InitialPriority = priority;
Priority = priority;
Attributes = attributes;
Module = module;
State = KThreadState.Stopped;
ExitWaiters = new FastLinkedList<KThread>();
NotifiedCallbacks = new FastLinkedList<KCallback>();
//if( stackSize < 65535 )
//{
// Log.WriteLine( Verbosity.Normal, Feature.Bios, "KThread: attempt to allocate thread with a stack of {0} - forcing up to the minimum of 64K", stackSize );
// stackSize = 65535;
//}
RunClocks = 0;
InterruptPreemptionCount = 0;
ThreadPreemptionCount = 0;
Partition = partition;
StackBlock = partition.Allocate( string.Format( "Thread '{0}' Stack", name ), KAllocType.High, 0, stackSize );
Debug.Assert( StackBlock != null );
TlsBlock = partition.Allocate( string.Format( "Thread '{0}' TLS", name ), KAllocType.High, 0, 0x4000 ); // 16k of thread local storage --- enough?
Debug.Assert( TlsBlock != null );
}
