Struct Unique

pub struct Unique { /* private fields */ }

We collect all global variables here.

These variable cannot be initialized as static variables, because their initialization function all rely on non-const fn (e.g. HashMap::new()).

In the same time, all these variables should not be wrapped in any kind of smark pointers / locks (e.g. Arc, RwLock), because they are used in concurrent environment, and it’s hard, if not impossible, to acquire a exclusive lock in any context.

Implementations

impl Unique

pub fn mut_page_cache() -> RwLockWriteGuard<'static, PageCache>

pub fn buffer_pool_pod() -> Arc<RwLock<PageCache>>

pub fn concurrent_status() -> &'static ConcurrentStatus

pub fn catalog() -> RwLockReadGuard<'static, Catalog>

pub fn mut_catalog() -> RwLockWriteGuard<'static, Catalog>

pub fn log_file() -> RwLockReadGuard<'static, LogManager>

pub fn mut_log_manager() -> RwLockWriteGuard<'static, LogManager>

pub fn log_file_pod() -> Arc<RwLock<LogManager>>

pub fn global() -> &'static Self