pub struct BufferPool { /* private fields */ }Implementations§
Source§impl BufferPool
impl BufferPool
pub fn new(num_pages: usize, disk_scheduler: Arc<DiskScheduler>) -> Self
pub fn new_with_config( config: BufferPoolConfig, disk_scheduler: Arc<DiskScheduler>, ) -> Self
pub fn capacity(&self) -> usize
pub fn frame_lock(&self, frame_id: FrameId) -> &RwLock<()>
Sourcepub unsafe fn frame_slice(&self, frame_id: FrameId) -> &[u8] ⓘ
pub unsafe fn frame_slice(&self, frame_id: FrameId) -> &[u8] ⓘ
Returns an immutable view over the page bytes stored in frame_id.
§Safety
Caller must guarantee the frame lock is held for read (or write) and that the frame remains pinned for the duration of the returned slice. Violating the locking protocol allows concurrent mutation and results in undefined behavior.
Sourcepub unsafe fn frame_slice_mut(&self, frame_id: FrameId) -> &mut [u8] ⓘ
pub unsafe fn frame_slice_mut(&self, frame_id: FrameId) -> &mut [u8] ⓘ
Returns a mutable view over the page bytes stored in frame_id.
§Safety
Caller must hold the frame’s write lock and ensure no other references to the
underlying slice exist. The buffer manager enforces this by acquiring the
corresponding RwLock write guard before invoking this function. Misuse causes
aliasing mutable references and leads to undefined behavior.
pub fn frame_meta(&self, frame_id: FrameId) -> MutexGuard<'_, FrameMeta>
pub fn clear_frame_meta(&self, frame_id: FrameId)
pub fn pop_free_frame(&self) -> Option<FrameId>
pub fn has_free_frame(&self) -> bool
pub fn push_free_frame(&self, frame_id: FrameId)
pub fn insert_mapping(&self, page_id: PageId, frame_id: FrameId)
pub fn remove_mapping_if(&self, page_id: PageId, frame_id: FrameId) -> bool
pub fn remove_mapping(&self, page_id: PageId)
pub fn lookup_frame(&self, page_id: PageId) -> Option<FrameId>
pub fn read_page_from_disk(&self, page_id: PageId) -> QuillSQLResult<Vec<u8>>
pub fn load_page_into_frame( &self, page_id: PageId, frame_id: FrameId, ) -> QuillSQLResult<()>
pub fn write_page_to_disk( &self, page_id: PageId, bytes: Bytes, ) -> QuillSQLResult<()>
pub fn allocate_page_id(&self) -> QuillSQLResult<PageId>
pub fn disk_scheduler(&self) -> Arc<DiskScheduler>
pub fn reset_frame(&self, frame_id: FrameId)
Trait Implementations§
Source§impl Debug for BufferPool
impl Debug for BufferPool
impl Sync for BufferPool
Auto Trait Implementations§
impl !Freeze for BufferPool
impl !RefUnwindSafe for BufferPool
impl Send for BufferPool
impl Unpin for BufferPool
impl !UnwindSafe for BufferPool
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