Enum ExitCause 

pub enum ExitCause {
    Clean,
    TaskPanicked,
    Failed(ChainViewError),
}

Why the supervised process exited — the value Supervisor::run returns for main to map to a process exit code and an optional post-restore stderr line (docs/02-tui-architecture.md §12).

The supervisor never calls std::process::exit (that would bypass the TerminalGuard’s Drop); it returns this instead.

Variants

Clean

A clean shutdown (q/Ctrl-C, or every task ending on its own) — exit code 0, no stderr line.

TaskPanicked

A supervised task panicked — fatal, non-zero exit.

Failed(ChainViewError)

A fatal error (startup failure, a provider failure past its reconnect budget, a channel close) — non-zero exit.

Implementations

impl ExitCause

pub fn exit_code(&self) -> i32

The process exit code main should use: 0 for a clean quit, 1 for any supervised failure.

pub fn is_clean(&self) -> bool

Whether this is a clean (exit-code-0) shutdown.

pub fn failure_message(&self) -> Option<String>

The non-secret line main may print to stderr after the terminal is restored, or None for a clean quit. The error Display is already redaction-safe (docs/01-domain-model.md §11).

Trait Implementations

impl Debug for ExitCause

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.