Module daemon 

Daemon supervisor for component lifecycle management.

Structs

ComponentHandle

DaemonSupervisor

PidGuard

Exclusive, flock(2)-backed guard on the daemon’s pid file.

Enums

ComponentStatus

DaemonError

Error type for daemon component task failures and pid file guard acquisition.

Functions

is_process_alive

Check whether a process with the given PID is currently alive.

read_pid_file

Read the PID from a PID file.

remove_pid_file

Remove the PID file.

write_pid_file

Write a PID file atomically using O_CREAT | O_EXCL to prevent TOCTOU races.