Method _get_cache_id

salt/utils/mmap_cache.py:369–384

Return a value that changes whenever another process may have modified the on-disk index (so we drop stale mmaps and re-open). Inode alone is insufficient: concurrent writers keep the same inode while mutating the file, which would otherwise leave this process with

(self)

            pass

    def _get_cache_id(self):
        """
        Return a value that changes whenever another process may have modified
        the on-disk index (so we drop stale mmaps and re-open).

        Inode alone is insufficient: concurrent writers keep the same inode
        while mutating the file, which would otherwise leave this process with
        a permanently stale ``mmap`` view of the index.
        """
        try:
            st = os.stat(self.path)
            if st.st_ino:
                return (st.st_ino, st.st_mtime_ns, st.st_size)
            return (st.st_mtime, st.st_ctime, st.st_size)
        except OSError:
            return None

    def _sync_cache_id_after_local_write(self):
        """