public TaskExecutionState(TState actionState, int parentThreadId, ThreadStackTrace threadStackTrace, CancellationToken token)
{
this.ActionState = actionState;
this.ParentThreadId = parentThreadId;
this.ThreadStackTrace = threadStackTrace;
this.Token = token;
}
public void Execute <TState>(Action <TState> action, TState actionState)
where TState : new()
{
void ActionWrapper(TaskExecutionState <TState> scopedTaskState)
{
var currentThreadId = Thread.CurrentThread.ManagedThreadId;
var canRegisterParentStacktrace = currentThreadId != scopedTaskState.ParentThreadId;
try
{
if (canRegisterParentStacktrace)
{
ThreadStackTrace.RegisterParentThreadStackTrace(currentThreadId, scopedTaskState.ThreadStackTrace);
}
action(scopedTaskState.ActionState);
}
finally
{
if (canRegisterParentStacktrace)
{
ThreadStackTrace.UnregisterParentThreadStackTrace(currentThreadId);
}
}
}
this._cts.Token.ThrowIfCancellationRequested();
var stackedStackTrace = ThreadStackTrace.GetCurrentThreadStackTrace();
var taskState = new TaskExecutionState <TState>(actionState, Thread.CurrentThread.ManagedThreadId, stackedStackTrace, this._cts.Token);
this._taskFactory.StartNew(ActionWrapper, taskState, this._taskFactory.CreationOptions);
}
public static bool TryGetParentThreadStackTrace(int threadId, out ThreadStackTrace parentThreadStackTrace)
{
if (ParentThreadStackTraces.TryGetValue(threadId, out var stackTrace))
{
parentThreadStackTrace = stackTrace;
return(true);
}
parentThreadStackTrace = null;
return(false);
}
public override string ToString()
{
var currentThreadId = Thread.CurrentThread.ManagedThreadId;
var stackTraceText = base.ToString();
if (ThreadStackTrace.TryGetParentThreadStackTrace(currentThreadId, out var parentThreadStackTrace))
{
return("Current thread #" + currentThreadId.ToString(CultureInfo.InvariantCulture) + ":" + Environment.NewLine + stackTraceText + Environment.NewLine + parentThreadStackTrace);
}
return(stackTraceText);
}
public static Thread Create(ThreadStart start, ThreadCreationOptions options)
{
var thread = new Thread(WrapWithParentStackTraceRemoval(start))
{
IsBackground = options.IsBackground,
Name = options.Name
};
var parentThreadStackTrace = ThreadStackTrace.GetCurrentThreadStackTrace();
ThreadStackTrace.RegisterParentThreadStackTrace(thread.ManagedThreadId, parentThreadStackTrace);
return(thread);
}
private static ThreadStart WrapWithParentStackTraceRemoval(ThreadStart start)
{
void Wrapper()
{
try
{
start();
}
finally
{
ThreadStackTrace.UnregisterParentThreadStackTrace(Thread.CurrentThread.ManagedThreadId);
}
}
return(Wrapper);
}
public static void RegisterParentThreadStackTrace(int threadId, ThreadStackTrace parentThreadStackTrace)
{
ParentThreadStackTraces.TryAdd(threadId, parentThreadStackTrace);
}
private ThreadStackTrace(ThreadStackTrace other)
{
this._stackTraces = new List <StackTrace>(other._stackTraces);
this._threadIds = new List <int>(other._threadIds);
}
