Function is_lock_contended

atomic-repository/src/repository/materialize.rs:30–34

True if a `try_lock*` error means the lock is currently held by someone else (as opposed to a genuine I/O failure). On Unix a contended non-blocking lock surfaces as `WouldBlock`, but on Windows the OS returns `ERROR_LOCK_VIOLATION` (code 33), which maps to `ErrorKind::Uncategorized` rather than `WouldBlock`. Comparing the raw OS error against `fs2::lock_contended_error()` handles both platforms.

(e: &std::io::Error)

/// `ErrorKind::Uncategorized` rather than `WouldBlock`. Comparing the raw OS
/// error against `fs2::lock_contended_error()` handles both platforms.
pub(crate) fn is_lock_contended(e: &std::io::Error) -> bool {
    e.kind() == std::io::ErrorKind::WouldBlock
        || (e.raw_os_error().is_some()
            && e.raw_os_error() == fs2::lock_contended_error().raw_os_error())
}

impl Repository {
    /// Return the first working-copy file that still contains an unresolved