Trait storage_manager::StorageDevice
pub trait StorageDevice: BlockIo + BlockReader + BlockWriter + KnownLength + Downcast {
// Required method
fn size_in_blocks(&self) -> usize;
}
Expand description
A trait that represents a storage device, such as hard disks, removable drives, SSDs, etc.
A StorageDevice
must implement the following traits:
BlockIo
: to specify its block size.BlockReader
andBlockWriter
: to enable reading and writing data from/to the device at block granularity.KnownLength
: to specify the size in bytes (length) of the entire device.
This trait includes additional functions to query device info, e.g., the device’s total size in number of blocks.
Required Methods§
fn size_in_blocks(&self) -> usize
fn size_in_blocks(&self) -> usize
Returns the total size of this device, given in number of blocks (sectors).
Implementations§
§impl dyn StorageDevice
impl dyn StorageDevice
pub fn is<__T>(&self) -> boolwhere
__T: StorageDevice,
pub fn is<__T>(&self) -> boolwhere __T: StorageDevice,
Returns true if the trait object wraps an object of type __T
.
pub fn downcast<__T>(
self: Box<dyn StorageDevice, Global>
) -> Result<Box<__T, Global>, Box<dyn StorageDevice, Global>>where
__T: StorageDevice,
pub fn downcast<__T>( self: Box<dyn StorageDevice, Global> ) -> Result<Box<__T, Global>, Box<dyn StorageDevice, Global>>where __T: StorageDevice,
Returns a boxed object from a boxed trait object if the underlying object is of type
__T
. Returns the original boxed trait if it isn’t.
pub fn downcast_rc<__T>(
self: Rc<dyn StorageDevice, Global>
) -> Result<Rc<__T, Global>, Rc<dyn StorageDevice, Global>>where
__T: StorageDevice,
pub fn downcast_rc<__T>( self: Rc<dyn StorageDevice, Global> ) -> Result<Rc<__T, Global>, Rc<dyn StorageDevice, Global>>where __T: StorageDevice,
Returns an Rc
-ed object from an Rc
-ed trait object if the underlying object is of
type __T
. Returns the original Rc
-ed trait if it isn’t.
pub fn downcast_ref<__T>(&self) -> Option<&__T>where
__T: StorageDevice,
pub fn downcast_ref<__T>(&self) -> Option<&__T>where __T: StorageDevice,
Returns a reference to the object within the trait object if it is of type __T
, or
None
if it isn’t.
pub fn downcast_mut<__T>(&mut self) -> Option<&mut __T>where
__T: StorageDevice,
pub fn downcast_mut<__T>(&mut self) -> Option<&mut __T>where __T: StorageDevice,
Returns a mutable reference to the object within the trait object if it is of type
__T
, or None
if it isn’t.