Function file_lock::lock_wait

pub fn lock_wait(filename: &str) -> Result<Lock, Error>

Locks the specified file.

The lock() and lock_wait() functions try to perform a lock on the specified file. The difference between the two is what they do when another process has a lock on the same file:

• lock() - immediately return with an Errno error.
• lock_wait() - waits (i.e. blocks the running thread) for the current owner of the lock to relinquish the lock.

Example

extern crate file_lock;

use file_lock::*;
use file_lock::Error::*;

fn main() {
    let l = lock("/tmp/file-lock-test");

    match l {
        Ok(_)  => println!("Got lock"),
        Err(e) => match e {
            InvalidFilename => println!("Invalid filename"),
            Errno(i)        => println!("Got filesystem error {}", i),
        }
    }
}