public async Task <bool> DoLengthyOpAsyncWithCtInNewThread(InfoObject info, CancellationToken ct)
{
info.IncreaseIndentationLevel();
string currentMethodName = nameof(DoLengthyOpAsyncWithCtInNewThread);
Task <bool> task = null;
info.Log($"Begin of {currentMethodName}, before starting Task.Run of DoLengthy-Async with CT");
try
{
task = Task.Run(() => DoLengthyOperationAsyncWithCancellationToken(info, ct), ct);
info.Log($"In {currentMethodName}, before awaiting Task.Run of DoLengthy-Async with CT");
await task;
info.Log($"In {currentMethodName}, after awaiting Task.Run of DoLengthy-Async with CT");
}
catch (OperationCanceledException)
{
info.Log($"End of {currentMethodName} received OperationCanceledException, Task.State <{task?.Status}>, rethrow");
info.DecreaseIndentationLevel();
throw;
}
info.Log($"End of {currentMethodName} Task.State <{task?.Status}>, Result: <{task.Result}>");
info.DecreaseIndentationLevel();
return(task.Result);
}
public bool DoLengthyOperation(InfoObject info)
{
info.IncreaseIndentationLevel();
string currentMethodName = nameof(DoLengthyOperation);
info.Log($"Begin of {currentMethodName}, before Thread.Sleep");
Thread.Sleep(info.MillisToSleep);
info.Log($"End of {currentMethodName}, after Thread.Sleep");
info.DecreaseIndentationLevel();
return(true);
}
public void DoItInSync(InfoObject info)
{
string currentMethodName = nameof(DoItInSync);
info.IncreaseIndentationLevel();
var lenghtyStuff = new LengthyStuff();
info.Log($"Begin of {currentMethodName} before calling DoLengthy-Sync");
lenghtyStuff.DoLengthyOperation(info);
info.Log($"End of {currentMethodName} after calling DoLengthy-Sync");
info.DecreaseIndentationLevel();
}
private async Task <bool> DoLengthyOperationAsync(InfoObject info, bool configureAwait = true)
{
info.IncreaseIndentationLevel();
string currentMethodName = nameof(DoLengthyOperationAsync);
info.Log($"in {currentMethodName}, before awaiting Task.Delay");
info.DecreaseIndentationLevel();
await Task.Delay(info.MillisToSleep).ConfigureAwait(configureAwait);
info.IncreaseIndentationLevel();
info.Log($"in {currentMethodName}, after awaiting Task.Delay");
info.DecreaseIndentationLevel();
return(true);
}
public async Task TaskDelay(InfoObject info, bool configureAwait = true)
{
string currentMethodName = nameof(TaskDelay);
var lenghtyStuff = new LengthyStuff();
info.IncreaseIndentationLevel();
info.Log($"Begin of {currentMethodName} before awaiting Task.Delay with ContinueOnCapturedContext {configureAwait}");
var task = Task.Delay(info.MillisToSleep).ConfigureAwait(configureAwait);
info.Log($"In {currentMethodName} before awaiting Task.Delay");
await task;
info.Log($"In {currentMethodName} after awaiting Task.Delay");
info.DecreaseIndentationLevel();
}
public async Task <bool> DoLengthyOperationAsyncWithCancellationToken(InfoObject info, CancellationToken ct)
{
info.IncreaseIndentationLevel();
string currentMethodName = nameof(DoLengthyOperationAsyncWithCancellationToken);
info.Log($"Begin of {currentMethodName}, at start");
// maybe check cancellation before starting work
//if (ct.IsCancellationRequested)
for (int i = 0; i < info.IterationsToSimulateWork; i++)
{
info.Log($"In {currentMethodName} - run <{i + 1}> ");
// first of all check for requested cancelling
if (ct.IsCancellationRequested)
{
info.Log($"In {currentMethodName}, cancelling was requested...");
if (info.ThrowIfCancellingRequesting)
{
info.Log($"End of {currentMethodName}, throwing ThrowIfCancellingRequested...");
info.DecreaseIndentationLevel();
ct.ThrowIfCancellationRequested();
}
else
{
info.Log($"End of {currentMethodName}, cancelling, just leaving with false...");
info.DecreaseIndentationLevel();
return(false);
}
}
info.Log($"In {currentMethodName} - run <{i + 1}> before awaiting Task.Delay()");
info.DecreaseIndentationLevel();
// simulate work
await Task.Delay(info.MillisToSleep);
info.IncreaseIndentationLevel();
info.Log($"In {currentMethodName} - run <{i + 1}> after awaiting Task.Delay()");
}
info.Log($"End of {currentMethodName}, reached end of method, returning true...");
info.DecreaseIndentationLevel();
return(true);
}
public async Task <bool> DoItInAsyncInNewThread(InfoObject info, bool configureAwait = true)
{
string currentMethodName = nameof(DoItInAsyncInNewThread);
info.IncreaseIndentationLevel();
var lenghtyStuff = new LengthyStuff();
info.Log($"Begin of {currentMethodName} before DoLengthy-Async");
var task = Task.Run(async() => await lenghtyStuff.DoLengthyOperationAsync(info, configureAwait)).ConfigureAwait(configureAwait);
info.Log($"In {currentMethodName} after DoLengthy, but before await");
bool result = await task;
info.Log($"End of {currentMethodName} after awaiting of DoLengthy-Async");
info.DecreaseIndentationLevel();
return(result);
}
public async Task <bool> DoItInAsync(InfoObject info, bool configureAwait = true)
{
string currentMethodName = nameof(DoItInAsync);
info.IncreaseIndentationLevel();
var lenghtyStuff = new LengthyStuff();
info.Log($"Begin of {currentMethodName} before calling DoLengthy-Async");
var task = lenghtyStuff.DoLengthyOperationAsync(info, configureAwait).ConfigureAwait(continueOnCapturedContext: configureAwait);
// perhaps you can do something before you need result from async-method
info.Log($"In {currentMethodName} after calling DoLengthy-Async, but before awaiting it...");
// but now need result form task
bool result = await task;
info.Log($"End of {currentMethodName} after awaiting DoLengthy-Async...");
info.DecreaseIndentationLevel();
return(result);
}
