private protected void Complete(ValueTask <TResult> task)
{
if (completed.FalseToTrue())
{
builder.SetResult(task);
}
}
public void AwaitOnCompleted_ForcesTaskCreation(int numAwaits, bool awaitUnsafe)
{
AsyncValueTaskMethodBuilder <int> b = ValueTask <int> .CreateAsyncMethodBuilder();
var dsm = new DelegateStateMachine();
TaskAwaiter <int> t = new TaskCompletionSource <int>().Task.GetAwaiter();
Assert.InRange(numAwaits, 1, int.MaxValue);
for (int i = 1; i <= numAwaits; i++)
{
if (awaitUnsafe)
{
b.AwaitUnsafeOnCompleted(ref t, ref dsm);
}
else
{
b.AwaitOnCompleted(ref t, ref dsm);
}
}
b.SetResult(42);
Assert.True(WrapsTask(b.Task));
Assert.Equal(42, b.Task.Result);
}
public void Start_ExecutionContextChangesInMoveNextDontFlowOut()
{
var al = new AsyncLocal<int> { Value = 0 };
int calls = 0;
var dsm = new DelegateStateMachine
{
MoveNextDelegate = () =>
{
al.Value++;
calls++;
}
};
dsm.MoveNext();
Assert.Equal(1, al.Value);
Assert.Equal(1, calls);
dsm.MoveNext();
Assert.Equal(2, al.Value);
Assert.Equal(2, calls);
AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
b.Start(ref dsm);
Assert.Equal(2, al.Value); // change should not be visible
Assert.Equal(3, calls);
// Make sure we've not caused the Task to be allocated
b.SetResult(42);
ValueTask<int> vt = b.Task;
Assert.NotSame(vt.AsTask(), vt.AsTask());
}
public void SetResult_AfterAccessTask_ValueTaskContainsValue()
{
AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
ValueTask<int> vt = b.Task;
b.SetResult(42);
Assert.True(vt.IsCompletedSuccessfully);
Assert.Same(vt.AsTask(), vt.AsTask()); // will be safe if completed asynchronously
Assert.Equal(42, vt.Result);
}
public void SetResult_AfterAccessTask_ValueTaskContainsValue()
{
AsyncValueTaskMethodBuilder <int> b = default;
ValueTask <int> vt = b.Task;
b.SetResult(42);
Assert.True(vt.IsCompletedSuccessfully);
Assert.True(WrapsTask(vt));
Assert.Equal(42, vt.Result);
}
public void SetResult_BeforeAccessTask_ValueTaskContainsValue()
{
AsyncValueTaskMethodBuilder <int> b = ValueTask <int> .CreateAsyncMethodBuilder();
b.SetResult(42);
ValueTask <int> vt = b.Task;
Assert.True(vt.IsCompletedSuccessfully);
Assert.False(WrapsTask(vt));
Assert.Equal(42, vt.Result);
}
internal void Complete() => builder.SetResult();
private void MoveNext()
{
int num = __1__state;
NullCoalesce c = __4__this;
int result;
try
{
/* M1AsyncAsyncA__d__5
* ValueTaskAwaiter<int> awaiter;
* if (num != 0)
* {
* ValueTask<int> valueTask = (c.FAsync != null) ? c.FAsync() : default(ValueTask<int>);
* awaiter = valueTask.GetAwaiter();
* if (!awaiter.IsCompleted)
* {
* num = (__1__state = 0);
* __u__1 = awaiter;
* __t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref this);
* return;
* }
* }
* else
* {
* awaiter = __u__1;
* __u__1 = default(ValueTaskAwaiter<int>);
* num = (__1__state = -1);
* }
* result = awaiter.GetResult();
*/
/* M1AsyncAsyncB__d__6 */
int num2;
ValueTaskAwaiter <int> awaiter;
if (num != 0)
{
if (c.FAsync == null)
{
num2 = 0;
goto IL_0082;
}
awaiter = c.FAsync().GetAwaiter();
if (!awaiter.IsCompleted)
{
num = (__1__state = 0);
__u__1 = awaiter;
__t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref this);
return;
}
}
else
{
awaiter = __u__1;
__u__1 = default(ValueTaskAwaiter <int>);
num = (__1__state = -1);
}
num2 = awaiter.GetResult();
goto IL_0082;
IL_0082:
result = num2;
/**/
/* M2AsyncAsync__d__8
*
* ValueTaskAwaiter<int> awaiter;
* if (num != 0)
* {
* Func<ValueTask<int>> fAsync = c.FAsync;
* ValueTask<int> valueTask = (fAsync != null) ? fAsync() : default(ValueTask<int>);
* awaiter = valueTask.GetAwaiter();
* if (!awaiter.IsCompleted)
* {
* num = (__1__state = 0);
* __u__1 = awaiter;
* __t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref this);
* return;
* }
* }
* else
* {
* awaiter = __u__1;
* __u__1 = default(ValueTaskAwaiter<int>);
* num = (__1__state = -1);
* }
* result = awaiter.GetResult();
*/
// ----
}
catch (Exception exception)
{
__1__state = -2;
__t__builder.SetException(exception);
return;
}
__1__state = -2;
__t__builder.SetResult(result);
}