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Recently had to look at this again and unsurprisingly I have no idea what past me was thinking. 馃槄
Basic idea: get rid of the loop. It ain't needed.
New control flow:
0 >= 0
), we need to refill the buffer.initialized
andoffset
only ever need to be reset when we actually succeeded in filling the buffer. On an error, we return which means that ifnext
gets called again, theoffset >= initialized
check will run again with the same result since nothing changed.Note: the diff is overcomplicating things, the main change is just swapping where the syscall and buffer consumption occur.