Struct DiskManager 

pub struct DiskManager { /* private fields */ }

Manages page-level I/O to a single data file. Each page is PAGE_SIZE bytes at offset = page_id * PAGE_SIZE.

Implementations

impl DiskManager

pub fn create(path: &Path) -> Result<Self>

pub fn open(path: &Path) -> Result<Self>

pub fn allocate_page(&mut self) -> Result<u32>

Allocate a new page and extend the file. Returns the new page_id.

pub fn write_page(&mut self, page_id: u32, data: &[u8]) -> Result<()>

pub fn read_page(&self, page_id: u32) -> Result<[u8; 4096]>

pub fn flush(&mut self) -> Result<()>

pub fn num_pages(&self) -> u32

pub fn file_ref(&self) -> &File

Borrow the underlying file (for mmap-based scans).