Method open_at

src/monitor.rs:193–201

Open a monitor mmap at an explicit directory (for testing).

(dir: &Path)

    /// Open a monitor mmap at an explicit directory (for testing).
    pub fn open_at(dir: &Path) -> std::io::Result<Self> {
        let mmap_path = dir.join(MMAP_FILENAME);
        let file = std::fs::OpenOptions::new().read(true).open(&mmap_path)?;
        let mmap = unsafe { memmap2::Mmap::map(&file)? };
        Ok(Self {
            mmap,
            dir: dir.to_path_buf(),
        })
    }

    /// Current write index (number of entries ever written).
    pub fn write_idx(&self) -> u64 {