• Max Kellermann's avatar
    input/uring: safe cancellation · 85bab670
    Max Kellermann authored
    My concept with `class CancellableOperation` doesn't work properly,
    because the kernel may continue to write to the given buffer as soon
    as the read finishes.
    
    To fix this, this commit adds `class ReadOperation` which owns the
    buffer and the `struct iovec`.  Instances of this class persist until
    the read really finishes, even if the operation is canceled.
    85bab670
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