AwaitableCompletionSource在多个场景下可替代TaskCompletionSource，更少的cpu时间和内存分配。
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$ dotnet add package AwaitableCompletionSourceReadme
No README available.
AwaitableCompletionSource在多个场景下可替代TaskCompletionSource，更少的cpu时间和内存分配。
$ dotnet add package AwaitableCompletionSourceNo README available.