Method lock_upgradable

crates/common/src/lock/cell_lock.rs:136–140

(&self)

unsafe impl RawRwLockUpgrade for RawCellRwLock {
    #[inline]
    fn lock_upgradable(&self) {
        if !self.try_lock_upgradable() {
            deadlock("upgradably+sharedly ", "RwLock")
        }
    }

    #[inline]
    fn try_lock_upgradable(&self) -> bool {