// Enter a state and push it onto the 'virtual callstack'.
// Stackframe describing state to enter, along with the
// locals in that state.
public void EnterState(VirtualStackFrame stackFrame)
{
if (stackFrame != null && stackFrame.State != null)
{
this.callStack.Push(stackFrame);
this.controller.EnterState(stackFrame);
}
else
{ // signify "Uninstrumented call"
this.callStack.Push(null);
}
}
internal void EnterState(VirtualStackFrame newFrame)
{
this.eventCode = EventCode.Enter;
this.enterStackParameter = newFrame;
this.eventSend.Set();
// Block until Island executes Nop,
// giving BPs a chance to be hit.
// Must block here if the island is stopped at a breakpoint.
this.eventDone.WaitOne();
}
// Common helper to invoke an Stack frame.
// This handles marshaling the args.
// islandArguments - arbitrary argument passed ot the islands.
// [DebuggerHidden]
internal void InvokeWorker(object islandArguments, VirtualStackFrame stackFrame)
{
State state = stackFrame.State;
if (!state.DebuggingEnabled)
{
// We need to short circuit and call IslandWorker because that is what the generated code
// would have done, if we had generated it. This causes the thread to finish up.
ThreadWorkerController.IslandWorker((ThreadWorkerController)islandArguments);
return;
}
MethodInfo methodInfo = this.dynamicModuleManager.GetIsland(state, this.IsPriming);
IDictionary <string, object> allLocals = stackFrame.Locals;
// Package up the raw arguments array.
const int numberOfBaseArguments = 2;
int numberOfEarlyLocals = state.NumberOfEarlyLocals;
object[] arguments = new object[numberOfBaseArguments + numberOfEarlyLocals]; // +1 for IslandArguments and +1 for IsPriming
arguments[0] = this.IsPriming;
arguments[1] = islandArguments;
if (numberOfEarlyLocals > 0)
{
int i = numberOfBaseArguments;
foreach (LocalsItemDescription localsItemDescription in state.EarlyLocals)
{
string name = localsItemDescription.Name;
object value;
if (allLocals.TryGetValue(name, out value))
{
// We could assert that val.GetType() is assignable to localsItemDescription.Type.
// MethodInfo invoke will check this anyways; but we could check
// it and give a better error.
}
else
{
// Local not supplied in the array! Use a default.
value = Activator.CreateInstance(localsItemDescription.Type);
}
arguments[i] = value;
i++;
}
}
methodInfo.Invoke(null, arguments);
}
// Pop the state most recently pushed by EnterState.
//[SuppressMessage(FxCop.Category.Usage, FxCop.Rule.ReviewUnusedParameters, Justification = "Revisit for bug 36860")]
public void LeaveState(State state)
{
if (this.callStack.Count > 0)
{
VirtualStackFrame stackFrame = this.callStack.Pop();
Fx.Assert(
(state == null && stackFrame == null) ||
(stackFrame != null && stackFrame.State == state),
"Unmatched LeaveState: " +
((state == null) ? "null" : state.Name) +
" with top stack frame: " +
((stackFrame == null || stackFrame.State == null) ? "null" : stackFrame.State.Name));
if (stackFrame != null) // Matches with an uninstrumented Activity.
{
this.controller.LeaveState();
}
}
else
{
Fx.Assert("Unmatched LeaveState: " + ((state != null) ? state.Name : "null"));
}
}
// Enter a state and push it onto the 'virtual callstack'.
// Stackframe describing state to enter, along with the
// locals in that state.
internal void EnterState(int threadIndex, VirtualStackFrame stackFrame)
{
Fx.Assert(threadIndex < this.threads.Count, "Index out of range for thread");
Fx.Assert(this.threads[threadIndex] != null, "LogicalThread is null");
this.threads[threadIndex].EnterState(stackFrame);
}
