Trait file_guard::os::unix::FileGuardExt

pub trait FileGuardExt {
    fn upgrade(&mut self) -> Result<()>;
    fn try_upgrade(&mut self) -> Result<()>;
}

UNIX-specific extensions to FileGuard.

Required methods

fn upgrade(&mut self) -> Result<()>

Upgrades a lock from Shared to Exclusive.

If the currently held lock is already Exclusive, no change is made and the method succeeds.

fn try_upgrade(&mut self) -> Result<()>

Attempts to upgrade a lock from Shared to Exclusive.

If the currently held lock is already Exclusive, no change is made and the method succeeds. If the upgrade cannot be obtained without blocking, an Error of kind ErrorKind::WouldBlock is returned.

Implementors

impl<T> FileGuardExt for FileGuard<T> where
    T: Deref<Target = File>,