Struct PidFile 

pub struct PidFile { /* private fields */ }

Implementations

impl PidFile

pub fn create(path: &Path) -> Result<Self>

Write the current pid. Call this after any daemonising fork, so the file records the daemon’s pid rather than that of the process that forked it.

pub fn touch(&self) -> Result<()>

Bump the modification time so a watchdog can see rash is still alive.

autossh only does this when built with -DTOUCH_PIDFILE, which is off in the stock build; rash exposes it as RASH_TOUCH_PIDFILE.

Trait Implementations

impl Debug for PidFile

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

Formats the value using the given formatter.

impl Drop for PidFile

fn drop(&mut self)

Remove the file, but only while it is still ours.

Nothing stops a second rash being pointed at the same path: it truncates the file and writes its own pid, and without this check the first one to exit would then delete the survivor’s pid file, leaving a live supervisor that no watchdog can find.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.