Macro process_manager 

macro_rules! process_manager {
    ( $( $env:expr => $func:expr ),* $(,)? ) => { ... };
}

Convenience macro that constructs a ProcessManager and registers multiple tasks in a compact syntax.

Example

let pm = process_manager! {
    "MY_TASK" => run,
    "SYNC"    => sync_worker,
}?;