proc-ctl 0.4.1

A helper library for querying and manipulating processes
Documentation 
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#[cfg(any(
    target_os = "linux",
    target_os = "windows",
    target_os = "macos",
    feature = "proc"
))]
pub(crate) trait MaybeHasPid {
    fn get_pid(&self) -> Option<crate::Pid>;
}

#[cfg(any(
    target_os = "linux",
    target_os = "windows",
    target_os = "macos",
    feature = "proc"
))]
pub(crate) fn resolve_pid(maybe_has_pid: &dyn MaybeHasPid) -> crate::ProcCtlResult<crate::Pid> {
    match &maybe_has_pid.get_pid() {
        Some(pid) => Ok(*pid),
        None => Err(crate::ProcCtlError::ConfigurationError(
            "unable to resolve a pid".to_string(),
        )),
    }
}