Type Definition spin::lock_api::RwLockUpgradableReadGuard  
source · pub type RwLockUpgradableReadGuard<'a, T> = RwLockUpgradableReadGuard<'a, RwLock<()>, T>;Expand description
A guard that provides immutable data access but can be upgraded to RwLockWriteGuard (compatible with lock_api).