int ICorDebugThread.EnumerateChains(out ICorDebugChainEnum ppChains)
{
Debug.Assert(!IsVirtualThread);
ArrayList chains = new ArrayList();
for (CorDebugThread thread = GetLastCorDebugThread(); thread != null; thread = thread.PreviousThread)
{
CorDebugChain chain = thread.Chain;
if (chain != null)
{
chains.Add(chain);
}
}
ppChains = new CorDebugEnum(chains, typeof(ICorDebugChain), typeof(ICorDebugChainEnum));
return(COM_HResults.S_OK);
}
public bool RemoveVirtualThread(CorDebugThread thread)
{
//can only remove last thread
CorDebugThread threadLast = GetLastCorDebugThread();
Debug.Assert(threadLast.IsVirtualThread && !IsVirtualThread);
if (threadLast != thread)
{
return(false);
}
CorDebugThread threadNextToLast = threadLast.PreviousThread;
threadNextToLast.NextThread = null;
threadNextToLast.IsSuspended = threadNextToLast._fSuspendedSav;
threadLast.PreviousThread = null;
//Thread will be removed from process.m_alThreads when the ThreadTerminated breakpoint is hit
return(true);
}
public override void Hit(BreakpointDef breakpointDef)
{
CorDebugThread thread = Process.GetThread(breakpointDef.m_pid);
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackBreakpoint(thread, this, TypeToMarshal));
}
private void Break(BreakpointDef breakpointDef)
{
CorDebugThread thread = Process.GetThread(breakpointDef.m_pid);
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackBreak(thread));
}
private void ExceptionThrown(BreakpointDef breakpointDef)
{
CorDebugThread thread = Process.GetThread(breakpointDef.m_pid);
thread.StoppedOnException();
CorDebugFrame frame = thread.Chain.GetFrameFromDepthnanoCLR(breakpointDef.m_depth);
bool fIsEval = thread.IsVirtualThread;
bool fUnhandled = (breakpointDef.m_depthExceptionHandler == BreakpointDef.c_DEPTH_UNCAUGHT);
if (Process.Engine.Capabilities.ExceptionFilters)
{
switch (breakpointDef.m_depthExceptionHandler)
{
case BreakpointDef.c_DEPTH_EXCEPTION_FIRST_CHANCE:
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, breakpointDef.m_IP, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_FIRST_CHANCE));
break;
case BreakpointDef.c_DEPTH_EXCEPTION_USERS_CHANCE:
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, breakpointDef.m_IP, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_USER_FIRST_CHANCE));
break;
case BreakpointDef.c_DEPTH_EXCEPTION_HANDLER_FOUND:
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, breakpointDef.m_IP, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_CATCH_HANDLER_FOUND));
break;
}
}
else
{
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, breakpointDef.m_IP, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_FIRST_CHANCE));
uint depthMin = (fUnhandled) ? 0 : breakpointDef.m_depthExceptionHandler;
for (uint depth = breakpointDef.m_depth; depth >= depthMin; depth--)
{
frame = thread.Chain.GetFrameFromDepthnanoCLR(depth);
if (frame != null && frame.Function.HasSymbols && frame.Function.PdbxMethod.IsJMC)
{
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, frame.IP_nanoCLR, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_USER_FIRST_CHANCE));
break;
}
if (depth == 0)
{
break;
}
}
if (!fUnhandled)
{
frame = thread.Chain.GetFrameFromDepthnanoCLR(breakpointDef.m_depthExceptionHandler);
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, breakpointDef.m_IP, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_CATCH_HANDLER_FOUND));
}
}
if (fUnhandled)
{
//eval threads are virtual, and although the physical thread has an unhandled exception, the
//virtual thread does not. The eval thread will get killed, but the rest of the thread chain will
//survive, no need to confuse cpde by throwing an unhandled exception
if (fIsEval)
{
CorDebugEval eval = thread.CurrentEval;
eval.StoppedOnUnhandledException();
Debug.Assert(thread.IsVirtualThread);
CorDebugThread threadT = thread.GetRealCorDebugThread();
CorDebugFrame frameT = threadT.Chain.ActiveFrame;
//fake event to let debugging of unhandled exception occur.
//Frame probably needs to be an InternalStubFrame???
frame = thread.Chain.GetFrameFromDepthCLR(thread.Chain.NumFrames - 1);
#if DEBUG
CorDebugInternalFrame internalFrame = frame as CorDebugInternalFrame;
Debug.Assert(internalFrame != null && internalFrame.FrameType == CorDebugInternalFrameType.STUBFRAME_FUNC_EVAL);
#endif
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, frame, 0, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_CATCH_HANDLER_FOUND));
}
else
{
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackException(thread, null, uint.MaxValue, CorDebugExceptionCallbackType.DEBUG_EXCEPTION_UNHANDLED));
}
}
}
int ICorDebugEval.CallFunction(ICorDebugFunction pFunction, uint nArgs, ICorDebugValue[] ppArgs)
{
try
{
//CreateThread will cause a thread create event to occur. This is a virtual thread, so
//we need to suspend processing of nanoCLR commands until we have created the thread ourselves
//and the processing of a new virtual thread will be ignored.
Process.SuspendCommands(true);
//need to flush the breakpoints in case new breakpoints were waiting until process was resumed.
Process.UpdateBreakpoints();
Debug.Assert(nArgs == ppArgs.Length);
Debug.Assert(Process.IsExecutionPaused);
CorDebugFunction function = (CorDebugFunction)pFunction;
uint md = function.MethodDef_Index;
if (function.IsVirtual && function.IsInstance)
{
Debug.Assert(nArgs > 0);
md = this.Engine.GetVirtualMethod(function.MethodDef_Index, ((CorDebugValue)ppArgs[0]).RuntimeValue);
}
this.Process.SetCurrentAppDomain(this.AppDomain);
//Send the selected thread ID to the device so calls that use Thread.CurrentThread work as the user expects.
uint pid = this.Engine.CreateThread(md, GetScratchPadLocation(), m_threadReal.ID);
if (pid == uint.MaxValue)
{
throw new ArgumentException("nanoCLR cannot call this function. Possible reasons include: ByRef arguments not supported");
}
//If anything below fails, we need to clean up by killing the thread
if (nArgs > 0)
{
List <RuntimeValue> stackFrameValues = this.Engine.GetStackFrameValueAll(pid, 0, function.NumArg, Engine.StackValueKind.Argument);
for (int iArg = 0; iArg < nArgs; iArg++)
{
CorDebugValue valSrc = (CorDebugValue)ppArgs[iArg];
CorDebugValue valDst = CorDebugValue.CreateValue(stackFrameValues[iArg], m_appDomain);
if (valDst.RuntimeValue.Assign(valSrc.RuntimeValue) == null)
{
throw new ArgumentException("nanoCLR cannot set argument " + iArg);
}
}
}
m_threadVirtual = new CorDebugThread(this.Process, pid, this);
m_threadReal.AttachVirtualThread(m_threadVirtual);
Debug.Assert(!m_fActive);
m_fActive = true;
//It is possible that a hard breakpoint is hit, the first line of the function
//to evaluate. If that is the case, than breakpoints need to be drained so the
//breakpoint event is fired, to avoid a race condition, where cpde resumes
//execution to start the function eval before it gets the breakpoint event
//This is primarily due to the difference in behaviour of the nanoCLR and the desktop.
//In the desktop, the hard breakpoint will not get hit until execution is resumed.
//The nanoCLR can hit the breakpoint during the Thread_Create call.
Process.DrainBreakpointsAsync().Wait();
}
finally
{
Process.SuspendCommands(false);
}
return(COM_HResults.S_OK);
}
public void EndEval(EvalResult resultType, bool fSynchronousEval)
{
try
{
//This is used to avoid deadlock. Suspend commands synchronizes on this.Process
Process.SuspendCommands(true);
Debug.Assert(Utility.FImplies(fSynchronousEval, !m_fActive));
if (fSynchronousEval || m_fActive) //what to do if the eval isn't active anymore??
{
bool fKillThread = false;
if (m_threadVirtual != null)
{
if (m_threadReal.GetLastCorDebugThread() != m_threadVirtual)
{
throw new ArgumentException();
}
m_threadReal.RemoveVirtualThread(m_threadVirtual);
}
//Stack frames don't appear if they are not refreshed
if (fSynchronousEval)
{
for (CorDebugThread thread = this.m_threadReal; thread != null; thread = thread.NextThread)
{
thread.RefreshChain();
}
}
if (m_fException)
{
resultType = EvalResult.Exception;
}
//Check to see if we are able to EndEval -- is this the last virtual thread?
m_fActive = false;
m_resultType = resultType;
switch (resultType)
{
case EvalResult.Complete:
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackEval(m_threadReal, this, ManagedCallbacks.ManagedCallbackEval.EventType.EvalComplete));
break;
case EvalResult.Exception:
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackEval(m_threadReal, this, ManagedCallbacks.ManagedCallbackEval.EventType.EvalException));
break;
case EvalResult.Abort:
fKillThread = true;
/* WARNING!!!!
* If we do not give VS a EvalComplete message within 3 seconds of them calling ICorDebugEval::Abort then VS will attempt a RudeAbort
* and will display a scary error message about a serious internal debugger error and ignore all future debugging requests, among other bad things.
*/
Process.EnqueueEvent(new ManagedCallbacks.ManagedCallbackEval(m_threadReal, this, ManagedCallbacks.ManagedCallbackEval.EventType.EvalComplete));
break;
}
if (fKillThread && m_threadVirtual != null)
{
Engine.KillThread(m_threadVirtual.ID);
}
if (resultType == EvalResult.Abort)
{
Process.PauseExecution();
}
}
}
finally
{
Process.SuspendCommands(false);
}
}
public CorDebugChain(CorDebugThread thread, WireProtocol.Commands.Debugging_Thread_Stack.Reply.Call [] calls)
{
m_thread = thread;
ArrayList frames = new ArrayList(calls.Length);
bool lastFrameWasUnmanaged = false;
if (thread.IsVirtualThread)
{
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_FUNC_EVAL));
}
for (uint i = 0; i < calls.Length; i++)
{
WireProtocol.Commands.Debugging_Thread_Stack.Reply.Call call = calls[i];
WireProtocol.Commands.Debugging_Thread_Stack.Reply.CallEx callEx = call as WireProtocol.Commands.Debugging_Thread_Stack.Reply.CallEx;
if (callEx != null)
{
if ((callEx.m_flags & WireProtocol.Commands.Debugging_Thread_Stack.Reply.c_AppDomainTransition) != 0)
{
//No internal frame is used in the nanoCLR. This is simply to display the AppDomain transition
//in the callstack of Visual Studio.
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_APPDOMAIN_TRANSITION));
}
if ((callEx.m_flags & WireProtocol.Commands.Debugging_Thread_Stack.Reply.c_PseudoStackFrameForFilter) != 0)
{
//No internal frame is used in the nanoCLR for filters. This is simply to display the transition
//in the callstack of Visual Studio.
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_M2U));
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_U2M));
}
if ((callEx.m_flags & WireProtocol.Commands.Debugging_Thread_Stack.Reply.c_MethodKind_Interpreted) != 0)
{
if (lastFrameWasUnmanaged)
{
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_U2M));
}
lastFrameWasUnmanaged = false;
}
else
{
if (!lastFrameWasUnmanaged)
{
frames.Add(new CorDebugInternalFrame(this, CorDebugInternalFrameType.STUBFRAME_M2U));
}
lastFrameWasUnmanaged = true;
}
}
frames.Add(new CorDebugFrame(this, call, i));
}
m_frames = (CorDebugFrame[])frames.ToArray(typeof(CorDebugFrame));
uint depthCLR = 0;
for (int iFrame = m_frames.Length - 1; iFrame >= 0; iFrame--)
{
m_frames[iFrame]._depthCLR = depthCLR;
depthCLR++;
}
}
public ManagedCallbackBreakpoint(CorDebugThread thread, CorDebugBreakpoint breakpoint, Type typeToMarshal) : base(thread)
{
m_breakpoint = breakpoint;
m_typeToMarshal = typeToMarshal;
}
public ManagedCallbackEval(CorDebugThread thread, CorDebugEval eval, EventType eventType) : base(thread)
{
m_eval = eval;
m_eventType = eventType;
}
public ManagedCallbackThread(CorDebugThread thread) : this(thread, EventType.Other)
{
}
public ManagedCallbackExceptionUnwind(CorDebugThread thread, CorDebugFrame frame, CorDebugExceptionUnwindCallbackType type) : base(thread)
{
Debug.Assert(type == CorDebugExceptionUnwindCallbackType.DEBUG_EXCEPTION_INTERCEPTED, "UnwindBegin is not supported");
m_type = type;
m_frame = frame;
}
public ManagedCallbackBreak(CorDebugThread thread) : base(thread)
{
}
public ManagedCallbackStepComplete(CorDebugThread thread, CorDebugStepper stepper, CorDebugStepReason reason) : base(thread)
{
m_stepper = stepper;
m_reason = reason;
}
public ManagedCallbackBreakpointSetError(CorDebugThread thread, CorDebugBreakpoint breakpoint, uint error) : base(thread, breakpoint)
{
m_error = error;
}
public ManagedCallbackBreakpoint(CorDebugThread thread, CorDebugBreakpoint breakpoint) : this(thread, breakpoint, typeof(ICorDebugBreakpoint))
{
}