encapsulate Buffer access#109
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As access to `Buffer`s is shared with the DMA, we cannot simply use (non-)shared references: the compiler could optimize things in unforseen ways if it believes that it holds exclusive references to the data buffer. Encapsulate access to the `Buffer` more strictly and only access it through an `UnsafeCell`.
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As access to
Buffers is shared with the DMA,we cannot simply use (non-)shared references:
the compiler could optimize things in unforseen
ways if it believes that it holds exclusive references to the data buffer.
Encapsulate access to the
Buffermore strictly and only access it through anUnsafeCell.