Struct disk::SingleFileDisk
source · pub struct SingleFileDisk {
pub(crate) inner: IoSource<File>,
pub(crate) is_block_device_file: bool,
}
Expand description
A disk backed by a single file that implements AsyncDisk
for access.
Fields§
§inner: IoSource<File>
§is_block_device_file: bool
Implementations§
Trait Implementations§
source§impl AsyncDisk for SingleFileDisk
impl AsyncDisk for SingleFileDisk
source§fn flush<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn flush<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Flush intermediary buffers and/or dirty state to file. fsync not required.
source§fn fsync<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn fsync<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Asynchronously fsyncs any completed operations to the disk.
source§fn fdatasync<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn fdatasync<'life0, 'async_trait>(
&'life0 self
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Asynchronously fdatasyncs any completed operations to the disk.
Note that an implementation may simply call fsync for fdatasync.
source§fn read_to_mem<'a, 'async_trait>(
&'a self,
file_offset: u64,
mem: Arc<dyn BackingMemory + Send + Sync>,
mem_offsets: MemRegionIter<'a>
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'a: 'async_trait,
fn read_to_mem<'a, 'async_trait>(
&'a self,
file_offset: u64,
mem: Arc<dyn BackingMemory + Send + Sync>,
mem_offsets: MemRegionIter<'a>
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'a: 'async_trait,
Reads from the file at ‘file_offset’ into memory
mem
at mem_offsets
.
mem_offsets
is similar to an iovec except relative to the start of mem
.source§fn write_from_mem<'a, 'async_trait>(
&'a self,
file_offset: u64,
mem: Arc<dyn BackingMemory + Send + Sync>,
mem_offsets: MemRegionIter<'a>
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'a: 'async_trait,
fn write_from_mem<'a, 'async_trait>(
&'a self,
file_offset: u64,
mem: Arc<dyn BackingMemory + Send + Sync>,
mem_offsets: MemRegionIter<'a>
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'a: 'async_trait,
Writes to the file at ‘file_offset’ from memory
mem
at mem_offsets
.source§fn punch_hole<'life0, 'async_trait>(
&'life0 self,
file_offset: u64,
length: u64
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn punch_hole<'life0, 'async_trait>(
&'life0 self,
file_offset: u64,
length: u64
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Replaces a range of bytes with a hole.
source§fn write_zeroes_at<'life0, 'async_trait>(
&'life0 self,
file_offset: u64,
length: u64
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn write_zeroes_at<'life0, 'async_trait>(
&'life0 self,
file_offset: u64,
length: u64
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Writes up to
length
bytes of zeroes to the stream, returning how many bytes were written.source§fn read_double_buffered<'life0, 'life1, 'async_trait>(
&'life0 self,
file_offset: u64,
buf: &'life1 mut [u8]
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
fn read_double_buffered<'life0, 'life1, 'async_trait>(
&'life0 self,
file_offset: u64,
buf: &'life1 mut [u8]
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
Reads from the file at ‘file_offset’ into
buf
. Read moresource§fn write_double_buffered<'life0, 'life1, 'async_trait>(
&'life0 self,
file_offset: u64,
buf: &'life1 [u8]
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
fn write_double_buffered<'life0, 'life1, 'async_trait>(
&'life0 self,
file_offset: u64,
buf: &'life1 [u8]
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
Writes to the file at ‘file_offset’ from
buf
. Read moresource§impl DiskGetLen for SingleFileDisk
impl DiskGetLen for SingleFileDisk
source§impl FileAllocate for SingleFileDisk
impl FileAllocate for SingleFileDisk
Auto Trait Implementations§
impl !RefUnwindSafe for SingleFileDisk
impl Send for SingleFileDisk
impl Sync for SingleFileDisk
impl Unpin for SingleFileDisk
impl !UnwindSafe for SingleFileDisk
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more