The embedded daemon and the xmrig manager each kept their own copy of
the console output ring: append new bytes, trim the front to a cap at a
newline boundary, and hand a reader everything since its offset. The two
copies had drifted. The daemon tracked an absolute byte total so a
reader's offset stayed valid across a front-trim, while the miner keyed
its reader off the live buffer size, so a trim could silently rewind the
console feed.
- The append/trim and the since-offset logic now live in one small
header, outputWindowSince and appendBounded, included by both. The
trim keeps the newline-boundary cut and the guard that stops a lone
trailing newline from erasing the whole buffer.
- The xmrig manager now carries the same absolute byte total, so its
reader resolves against the window the same way and survives a trim
(and a process restart that clears the buffer but keeps the total).
Tests cover feeding the ring well past the trim point while a reader
polls each chunk (the feed is continuous and never dies at the trim),
the lone-trailing-newline guard, and a cleared buffer with a retained
total.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DanSandClaude Opus 4.8
e9042f091e