void wkfn()
{
try {
WaitHandle[] handles = new WaitHandle[] { _evHasData, _evStop.WaitHandle };
while (true)
{
_operationStarted = 0;
int idx = WaitHandle.WaitAny(handles);
if (idx == 0)
{
T workUnit;
while (_queue.TryDequeue(out workUnit))
{
Interlocked.Exchange(ref _operationStarted, DateTime.UtcNow.ToBinary());
try {
if (null != workUnit)
{
try {
ExecuteTask(workUnit);
}
catch (Exception ex)
{
_logger.Exception(string.Format("AT processing {0}", GetTaskDescription(workUnit)), ex);
}
}
else
{
_logger.Error("Thread {0}: null work in queue.", Name);
}
}
finally {
_operationStarted = 0;
}
}
}
else
{
break;
}
}
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
}
catch (Exception ex)
{
_logger.Exception(string.Format("Main wkfn of '{0}' was broken", Name), ex);
}
}
void processMail(CancellationToken token)
{
if (_mailsActiveCount > _maxParallelMessages)
{
return;
}
Interlocked.Increment(ref _mailsActiveCount);
QueuedMail msg = null;
try {
if (!token.IsCancellationRequested && _mainQueue.TryDequeue(out msg))
{
DateTime dt = DateTime.UtcNow;
using (ISmpClient cli = _clifac.Create())
{
cli.Send(msg.Msg);
}
if ((DateTime.UtcNow - dt).TotalSeconds > WarnTimeInSec)
{
_logger.Warn("Sending mail '{0}', to {1} took extratime: {2}s", msg.Msg.Subject, msg.Msg.Recipients, (DateTime.UtcNow - dt).TotalSeconds);
}
msg.Msg.Dispose();
}
}
catch (Exception ex)
{
_logger.Exception(string.Format("On sending news, queue size = {0}", _mainQueue.Count), ex);
if (!token.IsCancellationRequested)
{
msg.LastError = ex;
_retryQueue.Enqueue(msg);
startRetrying();
}
}
finally {
Interlocked.Decrement(ref _mailsActiveCount);
}
if (_mainQueue.Count > 0 && !token.IsCancellationRequested)
{
startSending();
}
}
public int Run(string[] commandLineArgs = null)
{
try {
_logger.Info("Processing command line switches");
processCommandLine(commandLineArgs);
_logger.Info("Command line switches were processed");
}
catch (Exception exc)
{
Environment.ExitCode = -1;
Console.WriteLine("During processing command line exception happened: {0}", exc.ToString());
return(Environment.ExitCode);
}
if (!_donotStartService)
{
bool running = false;
try {
_logger.Info("Service host is being constructed");
using (IRuntimeHost host = constructServiceHost())
{
_logger.Info("Service host was constructed");
running = true;
_logger.Info("Service host is being started");
host.Run(_testMode, commandLineArgs);
_logger.Info("Service host was finished");
}
}
catch (Exception ex)
{
Environment.ExitCode = -2;
_logger.Exception(running ? "Starting host":"Constructing host", ex);
if (_testMode)
{
Console.WriteLine("{0}: {1}", running ? "Starting host":"Constructing host", ex);
}
}
}
return(Environment.ExitCode);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (!_stateMachine.IsInFinalState)
{
try {
_stateMachine.Transit(_stateMachine.FinalState, CancellationToken.None).Wait(startStopTimeoutMS);
}
catch (Exception ex)
{
_logger.Exception(string.Format("At closing host '{0}'", WinServiceName), ex);
}
}
}
base.Dispose(disposing);
}
public void Dispose()
{
if (!_stateMachine.IsInFinalState)
{
try {
_stateMachine.Transit(_stateMachine.FinalState, CancellationToken.None).Wait(DisposingTimeoutSeconds);
}
catch (Exception ex)
{
_logger.Exception(string.Format("At closing service '{0}'", _stateMachine.Name), ex);
}
}
}
/// <summary>
/// Выполняет задачу.
/// </summary>
void executer(object task)
{
#if DEBUG
int ec = Interlocked.Increment(ref _entranceCount);
if (ec > 1)
{
_logger.Error("ThreadPoolSequentialExecuter: task parallel execution is detected '{0}'", ec);
}
#endif
if (Thread.VolatileRead(ref _disposed) == 0)
{
T tt = (T)task;
Exception excKeep = null;
try {
ExecuteTask(tt);
}
catch (Exception ex)
{
excKeep = ex;
_logger.Exception("Error of a task execution", ex);
}
try {
onTaskFinished(tt, excKeep);
}
catch (Exception ex)
{
_logger.Exception("Error of a task execution/finishing", ex);
}
}
#if DEBUG
Interlocked.Decrement(ref _entranceCount);
#endif
trySpawnNextTask();
}
void wkfn(object st)
{
try {
foreach (IMonitorable <T> drb in _controlables)
{
drb.PerformMonitoring(_monitorActivity);
}
}
catch (Exception ex)
{
_logger.Exception("ThreadMonitor: CheckHungingUp", ex);
}
Timer t = _t;
if (t != null)
{
try { t.Change(_monitorPeriodMS, Timeout.Infinite); } catch {}
}
}
public async Task <TState> Transit(TState newState, CancellationToken cts, object args = null)
{
if (_logTransitions)
{
_logger.Info("Machine '{0}' is about to transit {1} --> {2}", Name, State, newState);
}
if (!StateDef <TState> .IsValid(newState))
{
return(await compliteWithError(new Exception(string.Format("State '{0}' is invalid for machine '{1}'", newState, Name))));
}
if (IsInFinalState)
{
return(await compliteWithError(new Exception(string.Format("Machine '{0}' can't transit to state '{1}' because it is in final state '{2}'", Name, newState, _state.Final))));
}
int res = Interlocked.Exchange(ref _isInTransition, 1); //блокировка транзишенов до тех пор, пока не заевршится текущий транзишен
if (res != 0)
{
if (EqualityComparer <TState> .Default.Equals(newState, FinalState)) //разрешаем только рекурсивный Close
{
_logger.Warn("Machine '{0}' started reqursive transition {1} --> {2}", Name, State, newState);
}
else
{
return(await compliteWithError(new Exception(string.Format("In machine '{0}' reqursive transition {1} --> {2} has been detected", Name, State, newState))));
}
}
TState transitionResult = State;
CancellationTokenRegistration reg = default(CancellationTokenRegistration);
bool lockCleared = false;
try {
TState stateFrom = State;
TransitionDef <TState> transition = getTransition(stateFrom, newState);
if (transition == TransitionDef <TState> .Empty)
{
throw new Exception(string.Format("Machine '{0}' didn't find transition {1} --> {2}", Name, stateFrom, newState));
}
if (_logTransitions)
{
_logger.Info("Machine '{0}' is transiting {1} --> {2}", Name, stateFrom, newState);
}
if (transition.StateActivityAsync != null)
{
try {
TransitionState = _state.GetTransitionalState(State, newState);
if (TransitionState != null)
{
onStateChanging(TransitionState.Value);
}
reg = cts.Register(() => { lockCleared = true; Interlocked.Exchange(ref _isInTransition, 0); });
transitionResult = await transition.StateActivityAsync(stateFrom, newState, cts, args).WithAllExceptions().ConfigureAwait(false);
cts.ThrowIfCancellationRequested();
State = transitionResult;
if (_logTransitions)
{
_logger.Info("Machine '{0}' transited {1} --> {2}", Name, stateFrom, newState);
}
onStateChanged(stateFrom, transitionResult);
}
catch (AggregateException ex)
{
_logger.Error("Machine '{0}' failed to transit {1} --> {2}", Name, stateFrom, newState);
onStateChanged(stateFrom, transitionResult, ex);
ex.Handle((err) => {
if (err is OperationCanceledException)
{
_logger.Warn("Machine '{0}' transition {1} --> {2} was cancelled", Name, stateFrom, newState);
return(true);
}
return(false);
});
}
catch (OperationCanceledException ce)
{
_logger.Warn("Machine '{0}' transition {1} --> {2} was cancelled", Name, stateFrom, newState);
onStateChanged(stateFrom, transitionResult, ce);
}
catch (Exception ex)
{
_logger.Exception(string.Format("Machine '{0}' failed to transit {1} --> {2}", Name, stateFrom, newState), ex);
onStateChanged(stateFrom, transitionResult, ex);
throw;
}
}
else
{
State = newState;
transitionResult = newState;
if (_logTransitions)
{
_logger.Info("Machine '{0}' transited {1} --> {2} with no action", Name, stateFrom, newState);
}
onStateChanged(stateFrom, newState);
}
}
finally {
if (!lockCleared)
{
Interlocked.Exchange(ref _isInTransition, 0);
TransitionState = null;
}
}
return(transitionResult);
}