A library that lets you wrap and await any awaitable object in C#.
NOTE: This library is slower than direct await about 10~12 times, this will cause a huge performance impact when sensitive to async/await performance .
object obj = ...;
await AwaitableWrapper.Wrap(obj);
object obj = Task.FromResult(1);
int result = await AwaitableWrapper.Wrap<int>(obj);
- Check object type, throw if incoming object is not awaitable.
- Call 'GetAwaiter' method and box return value to
object
. - Wrap, generate and cache
OnComplete
,get_IsCompleted
,GetResult
from the awaiter which returned fromGetAwaiter
method. - Create
AwaiterWrapper
object and pass cached methods to it.
| Method | Mean | Error | StdDev |
|----------------------------- |-----------:|----------:|----------:|
| DirectAwaitTask | 9.996 ns | 0.0746 ns | 0.0661 ns |
| WrappedTask | 101.225 ns | 2.0640 ns | 2.1196 ns |
| DirectAwaitValueTask | 9.233 ns | 0.0876 ns | 0.0732 ns |
| WrappedValueTask | 111.555 ns | 2.1622 ns | 2.1236 ns |