Struct PageManager 

pub struct PageManager { /* private fields */ }

Page manager for database file

Implementations

impl PageManager

pub fn create<P: AsRef<Path>>(path: P, page_size: u32) -> Result<Self>

Create a new database file

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

Open an existing database file

pub fn allocate_page(&self) -> Result<PageId>

Allocate a new page - O(1) amortized

First tries to pop from free list, otherwise extends file

pub fn deallocate_page(&self, page_id: PageId) -> Result<()>

Deallocate a page - O(1)

Adds page to head of free list

pub fn read_page(&self, page_id: PageId) -> Result<Vec<u8>>

Read a page

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

Write a page

pub fn sync(&self) -> Result<()>

Sync all changes to disk

pub fn page_size(&self) -> u32

Get page size

pub fn total_pages(&self) -> u64

Get total pages

pub fn path(&self) -> &Path

Get database file path

pub fn stats(&self) -> Result<PageManagerStats>

Get statistics