public bool _RestartWith(CompletionLink next)
{
if (Interlocked.CompareExchange(ref this.next, next, null) != null)
{
return(false);
}
else
{
cancellationTokenSource.Cancel();
try {
task?.Wait();
} catch (AggregateException aggregateException) {
if (aggregateException.InnerExceptions.Count != 1 ||
!(aggregateException.InnerExceptions[0] is TaskCanceledException))
{
throw;
}
}
if (!isCompletedUninterrupted)
{
this.next = next;
next.previous = this;
}
return(true);
}
}
public void StartNext(CompletionLink next) {
var spinner = new SpinWait();
while (!current._RestartWith(next)) {
spinner.SpinOnce();
}
next._Start();
current = next;
}
public void StartNext(CompletionLink next)
{
var spinner = new SpinWait();
while (!current._RestartWith(next))
{
spinner.SpinOnce();
}
next._Start();
current = next;
}
private void HandleCompletion()
{
previous?.HandleCompletion();
completionHandlers.ForEach(x => x.Invoke());
completionLatch.Set();
if (this.previous != null)
{
this.previous.next = null;
this.previous = null;
}
this.completionHandlers.Clear();
}
public bool _RestartWith(CompletionLink next) {
if (Interlocked.CompareExchange(ref this.next, next, null) != null) {
return false;
} else {
cancellationTokenSource.Cancel();
try {
task?.Wait();
} catch (AggregateException aggregateException) {
if (aggregateException.InnerExceptions.Count != 1 ||
!(aggregateException.InnerExceptions[0] is TaskCanceledException)) {
throw;
}
}
if (!isCompletedUninterrupted) {
this.next = next;
next.previous = this;
}
return true;
}
}
public CompletionChain(Func <CancellationToken, bool> action)
{
this.action = action;
this.current = new CompletionLink(this, true, "_sentinel_link_", (cancellationToken) => true);
}
public CompletionChain(Func<CancellationToken, bool> action) {
this.action = action;
this.current = new CompletionLink(this, true, "_sentinel_link_", (cancellationToken) => true);
}
private void HandleCompletion() {
previous?.HandleCompletion();
completionHandlers.ForEach(x => x.Invoke());
completionLatch.Set();
if (this.previous != null) {
this.previous.next = null;
this.previous = null;
}
this.completionHandlers.Clear();
}
