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Async Task vs Async void
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2 years ago
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public class MyClass
public class MyClass
{
{
[CompilerGenerated]
[CompilerGenerated]
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private sealed class <
NormalAsync
>d__0 : IAsyncStateMachine
private sealed class <
AsyncVoid
>d__0 : IAsyncStateMachine
{
{
public int <>1__state;
public int <>1__state;
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public Async
Task
MethodBuilder <>t__builder;
public Async
Void
MethodBuilder <>t__builder;
public MyClass <>4__this;
public MyClass <>4__this;
private YieldAwaitable.YieldAwaiter <>u__1;
private YieldAwaitable.YieldAwaiter <>u__1;
private void MoveNext()
private void MoveNext()
{
{
int num = <>1__state;
int num = <>1__state;
try
try
{
{
YieldAwaitable.YieldAwaiter awaiter;
YieldAwaitable.YieldAwaiter awaiter;
if (num != 0)
if (num != 0)
{
{
awaiter = Task.Yield().GetAwaiter();
awaiter = Task.Yield().GetAwaiter();
if (!awaiter.IsCompleted)
if (!awaiter.IsCompleted)
{
{
num = (<>1__state = 0);
num = (<>1__state = 0);
<>u__1 = awaiter;
<>u__1 = awaiter;
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<
NormalAsync
>d__0 stateMachine = this;
<
AsyncVoid
>d__0 stateMachine = this;
<>t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref stateMachine);
<>t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref stateMachine);
return;
return;
}
}
}
}
else
else
{
{
awaiter = <>u__1;
awaiter = <>u__1;
<>u__1 = default(YieldAwaitable.YieldAwaiter);
<>u__1 = default(YieldAwaitable.YieldAwaiter);
num = (<>1__state = -1);
num = (<>1__state = -1);
}
}
awaiter.GetResult();
awaiter.GetResult();
}
}
catch (Exception exception)
catch (Exception exception)
{
{
<>1__state = -2;
<>1__state = -2;
<>t__builder.SetException(exception);
<>t__builder.SetException(exception);
return;
return;
}
}
<>1__state = -2;
<>1__state = -2;
<>t__builder.SetResult();
<>t__builder.SetResult();
}
}
void IAsyncStateMachine.MoveNext()
void IAsyncStateMachine.MoveNext()
{
{
//ILSpy generated this explicit interface implementation from .override directive in MoveNext
//ILSpy generated this explicit interface implementation from .override directive in MoveNext
this.MoveNext();
this.MoveNext();
}
}
[DebuggerHidden]
[DebuggerHidden]
private void SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine)
private void SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine)
{
{
}
}
void IAsyncStateMachine.SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine)
void IAsyncStateMachine.SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine)
{
{
//ILSpy generated this explicit interface implementation from .override directive in SetStateMachine
//ILSpy generated this explicit interface implementation from .override directive in SetStateMachine
this.SetStateMachine(stateMachine);
this.SetStateMachine(stateMachine);
}
}
}
}
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[NullableContext(1)]
[AsyncStateMachine(typeof(<
AsyncVoid
>d__0))]
[AsyncStateMachine(typeof(<
NormalAsync
>d__0))]
[DebuggerStepThrough]
[DebuggerStepThrough]
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public
Task NormalAsync
()
public
void AsyncVoid
()
{
{
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<
NormalAsync
>d__0 stateMachine = new <
NormalAsync
>d__0();
<
AsyncVoid
>d__0 stateMachine = new <
AsyncVoid
>d__0();
stateMachine.<>t__builder = Async
Task
MethodBuilder.Create();
stateMachine.<>t__builder = Async
Void
MethodBuilder.Create();
stateMachine.<>4__this = this;
stateMachine.<>4__this = this;
stateMachine.<>1__state = -1;
stateMachine.<>1__state = -1;
stateMachine.<>t__builder.Start(ref stateMachine);
stateMachine.<>t__builder.Start(ref stateMachine);
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return stateMachine.<>t__builder.Task;
}
}
}
}
Saved diffs
Original text
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public class MyClass { [CompilerGenerated] private sealed class <NormalAsync>d__0 : IAsyncStateMachine { public int <>1__state; public AsyncTaskMethodBuilder <>t__builder; public MyClass <>4__this; private YieldAwaitable.YieldAwaiter <>u__1; private void MoveNext() { int num = <>1__state; try { YieldAwaitable.YieldAwaiter awaiter; if (num != 0) { awaiter = Task.Yield().GetAwaiter(); if (!awaiter.IsCompleted) { num = (<>1__state = 0); <>u__1 = awaiter; <NormalAsync>d__0 stateMachine = this; <>t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref stateMachine); return; } } else { awaiter = <>u__1; <>u__1 = default(YieldAwaitable.YieldAwaiter); num = (<>1__state = -1); } awaiter.GetResult(); } catch (Exception exception) { <>1__state = -2; <>t__builder.SetException(exception); return; } <>1__state = -2; <>t__builder.SetResult(); } void IAsyncStateMachine.MoveNext() { //ILSpy generated this explicit interface implementation from .override directive in MoveNext this.MoveNext(); } [DebuggerHidden] private void SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine) { } void IAsyncStateMachine.SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine) { //ILSpy generated this explicit interface implementation from .override directive in SetStateMachine this.SetStateMachine(stateMachine); } } [NullableContext(1)] [AsyncStateMachine(typeof(<NormalAsync>d__0))] [DebuggerStepThrough] public Task NormalAsync() { <NormalAsync>d__0 stateMachine = new <NormalAsync>d__0(); stateMachine.<>t__builder = AsyncTaskMethodBuilder.Create(); stateMachine.<>4__this = this; stateMachine.<>1__state = -1; stateMachine.<>t__builder.Start(ref stateMachine); return stateMachine.<>t__builder.Task; } }
Changed text
Open file
public class MyClass { [CompilerGenerated] private sealed class <AsyncVoid>d__0 : IAsyncStateMachine { public int <>1__state; public AsyncVoidMethodBuilder <>t__builder; public MyClass <>4__this; private YieldAwaitable.YieldAwaiter <>u__1; private void MoveNext() { int num = <>1__state; try { YieldAwaitable.YieldAwaiter awaiter; if (num != 0) { awaiter = Task.Yield().GetAwaiter(); if (!awaiter.IsCompleted) { num = (<>1__state = 0); <>u__1 = awaiter; <AsyncVoid>d__0 stateMachine = this; <>t__builder.AwaitUnsafeOnCompleted(ref awaiter, ref stateMachine); return; } } else { awaiter = <>u__1; <>u__1 = default(YieldAwaitable.YieldAwaiter); num = (<>1__state = -1); } awaiter.GetResult(); } catch (Exception exception) { <>1__state = -2; <>t__builder.SetException(exception); return; } <>1__state = -2; <>t__builder.SetResult(); } void IAsyncStateMachine.MoveNext() { //ILSpy generated this explicit interface implementation from .override directive in MoveNext this.MoveNext(); } [DebuggerHidden] private void SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine) { } void IAsyncStateMachine.SetStateMachine([Nullable(1)] IAsyncStateMachine stateMachine) { //ILSpy generated this explicit interface implementation from .override directive in SetStateMachine this.SetStateMachine(stateMachine); } } [AsyncStateMachine(typeof(<AsyncVoid>d__0))] [DebuggerStepThrough] public void AsyncVoid() { <AsyncVoid>d__0 stateMachine = new <AsyncVoid>d__0(); stateMachine.<>t__builder = AsyncVoidMethodBuilder.Create(); stateMachine.<>4__this = this; stateMachine.<>1__state = -1; stateMachine.<>t__builder.Start(ref stateMachine); } }
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