static Task P_BeforeDisposeAsync(P_Lifecycle lifecycle, Action continuation)
{
try {
if (lifecycle is null)
{
throw new ArgumentNullException(paramName: nameof(lifecycle));
}
//
if (lifecycle.Disposing || lifecycle.IsDisposed)
{
return(TaskUtilities.FromVoidResult());
}
else
{
return(doDisposeAsync());
}
}
catch (Exception exception) {
return(TaskUtilities.FromError(error: exception));
}
//
async Task doDisposeAsync()
{
lifecycle.SetDisposeRequested();
var acquisition = lifecycle._acquisition;
if (!(acquisition is null))
{
await acquisition.ReleaseAsync().ConfigureAwait(false);
}
continuation?.Invoke();
}
}
static Task P_DefaultRelease(IVh <T> instance)
{
try {
instance?.Dispose();
return(TaskUtilities.FromVoidResult());
}
catch (Exception exception) {
return(TaskUtilities.FromError(exception));
}
}
static Func <IVh <T>, Task> P_GetReleaseDelegate(Action <IVh <T> > release)
{
release.EnsureNotNull(nameof(release));
//
return
((locInstance) => {
try {
release(locInstance);
return TaskUtilities.FromVoidResult();
}
catch (Exception exception) {
return TaskUtilities.FromError(error: exception);
}
});
}
// TODO: Put strings into the resources.
//
protected override Task DoActivateAsync(IRunControlAttemptState state)
{
try {
state.EnsureNotNull(nameof(state));
//
CancellationTokenSource cts = default;
try {
cts = CancellationTokenSource.CreateLinkedTokenSource(tokens: new CancellationToken[] { App.AppShutdownToken });
var ct = cts.Token;
if (UpdDAIfNullBool(ref _currentActivationCts, cts))
{
P_ScheduleNextSignal(period: P_SelectNextPeriod(), ct: ct);
}
else
{
throw
new EonException(
message: $"Недопустимый вызов операции. Операция уже была выполнена ранее. Для повторного выполнения необходимо сначала выполнить операцию '{nameof(DoDeactivateAsync)}'.{Environment.NewLine}\tКомпонент:{this.FmtStr().GNLI2()}");
}
}
catch (Exception exception) {
if (!(cts is null))
{
ExceptionUtilities
.TryCatch(
op:
() => {
cts.Cancel(throwOnFirstException: false);
itrlck.SetNullBool(location: ref _currentActivationCts, comparand: cts);
cts.Dispose();
},
exception: exception);
}
throw;
}
return(TaskUtilities.FromVoidResult());
}
catch (Exception exception) {
return(TaskUtilities.FromError(error: exception));
}
}
public static Task DisposeAsync(P_Lifecycle lifecycle)
{
try {
if (lifecycle is null)
{
throw new ArgumentNullException(paramName: nameof(lifecycle));
}
//
if (lifecycle.Disposing || lifecycle.IsDisposed)
{
return(TaskUtilities.FromVoidResult());
}
else
{
return(P_BeforeDisposeAsync(lifecycle: lifecycle, continuation: lifecycle.Dispose));
}
}
catch (Exception exception) {
return(TaskUtilities.FromError(error: exception));
}
}
Task P_DoStopAsync()
{
try {
var cancellationTokenSource = ReadDA(ref _cancellationTokenSource);
if (!cancellationTokenSource.IsCancellationRequested)
{
cancellationTokenSource.Cancel();
}
var loopTask = ReadDA(ref _loopTask);
if (loopTask == null)
{
return(TaskUtilities.FromVoidResult());
}
else
{
return(loopTask);
}
}
catch (Exception firstException) {
return(TaskUtilities.FromError(error: firstException));
}
}
// TODO: Put strings into the resources.
//
Task P_DoStartAsync(IRunControlAttemptState state)
{
// TODO_HIGH: Этот таймаут должен браться из контекста запуска (когда будет реализован) как время оставшееся для выполнения операции запуска.
//
const int loopStartMillisecondsTimeout = 10000;
try {
state.EnsureNotNull(nameof(state));
//
var ct = ReadDA(ref _cancellationTokenSource).Token;
ManualResetEventSlim loopStartedEvent = default;
try {
loopStartedEvent = new ManualResetEventSlim(initialState: false);
Task loopTask;
Interlocked
.Exchange(
location1: ref _loopTask,
value:
loopTask =
TaskUtilities
.RunOnDefaultScheduler(
action: P_Loop,
state: new P_LoopStartState(worker: this, loopStartedEvent: loopStartedEvent),
cancellationToken: ct,
options: TaskCreationOptions.PreferFairness | TaskCreationOptions.LongRunning));
if (!loopStartedEvent.Wait(millisecondsTimeout: loopStartMillisecondsTimeout))
{
loopStartedEvent.Dispose();
//
if (loopTask.IsCompleted)
{
throw
new EonException(
message:
"Цикл обработки очереди рабочих элементов не запустился в отведённое для запуска время. Время ожидания запуска истекло."
+ (loopTask.IsCanceled ? $"{Environment.NewLine}Задача цикла была отменена." : string.Empty),
innerException: loopTask.IsFaulted ? loopTask.Exception : null);
}
else
{
throw
new TimeoutException(
message: $"Цикл обработки очереди рабочих элементов не запустился в отведённое для запуска время. Время ожидания запуска истекло.{Environment.NewLine}Статус задачи цикла:{loopTask.Status.FmtStr().GNLI()}");
}
}
//
loopTask
.ContinueWith(
continuationAction: P_OnLoopTaskCompleted,
cancellationToken: CancellationToken.None,
continuationOptions: TaskContinuationOptions.PreferFairness,
scheduler: TaskScheduler.Default);
}
finally {
loopStartedEvent?.Dispose();
}
//
return(TaskUtilities.FromVoidResult());
}
catch (Exception firstException) {
return(TaskUtilities.FromError(error: firstException));
}
}
protected override Task DoDeactivateAsync() => TaskUtilities.FromVoidResult();
