Am 20.08.2013 17:16, schrieb Antoine Pelisse:
I was actually wondering when it's better to use xread() over
read_in_full() ? Considering that we don't know if xread() will read
the whole buffer or not, would it not be better to always use
Of course, you know whether the whole buffer was filled: xread() returns
the number of bytes read. Same for xwrite().
I guess there is a drawback to this, but I'm not
exactly sure what it is.
The disadvantage of read_in_full() is that it can happen that it reads
data from the stream successfully, but then reports an error. In this
case, the data read is lost.
Analogously, when write_in_full() writes (some) data successfully, but
ultimately fails, you don't know how much was written successfully.
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