Struct SerialLogger 

struct SerialLogger;

Simple serial port logger

Trait Implementations

impl Log for SerialLogger

fn enabled(&self, metadata: &Metadata<'_>) -> bool

Performs the enabled operation.

fn log(&self, record: &Record<'_>)

Performs the log operation.

Architecture (FreeBSD vt(4) / Linux nbcon pattern):

1. Always write to serial (fast, always works).
2. Enqueue a plain-text copy into the lock-free vgabuf ring buffer. No lock is acquired here : safe from any context (IRQ, panic).
3. The status_line_task drains vgabuf to the framebuffer asynchronously via vgabuf_flush_to_framebuffer().

This decouples the hot logging path from framebuffer rendering, making deadlocks structurally impossible.

fn flush(&self)

Performs the flush operation.