Struct ic_stable_structures::writer::BufferedWriter
source · pub struct BufferedWriter<'a, M: Memory> { /* private fields */ }
Expand description
A writer to the stable memory which first writes the bytes to an in memory buffer and flushes the buffer to stable memory each time it becomes full.
Warning: This will overwrite any existing data in stable memory as it writes, so ensure you set
the offset
value accordingly if you wish to preserve existing data.
Note: Each call to grow or write to stable memory is a relatively expensive operation, so pick a buffer size large enough to avoid excessive calls to stable memory.
Implementations
sourceimpl<'a, M: Memory> BufferedWriter<'a, M>
impl<'a, M: Memory> BufferedWriter<'a, M>
Trait Implementations
sourceimpl<'a, M: Memory> Write for BufferedWriter<'a, M>
impl<'a, M: Memory> Write for BufferedWriter<'a, M>
sourcefn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this writer, returning how many bytes were written. Read more
sourcefn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered
contents reach their destination. Read more
sourcefn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector
)1.0.0 · sourcefn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
Attempts to write an entire buffer into this writer. Read more
sourcefn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
🔬This is a nightly-only experimental API. (
write_all_vectored
)Attempts to write multiple buffers into this writer. Read more
Auto Trait Implementations
impl<'a, M> RefUnwindSafe for BufferedWriter<'a, M>where
M: RefUnwindSafe,
impl<'a, M> Send for BufferedWriter<'a, M>where
M: Send,
impl<'a, M> Sync for BufferedWriter<'a, M>where
M: Sync,
impl<'a, M> Unpin for BufferedWriter<'a, M>
impl<'a, M> !UnwindSafe for BufferedWriter<'a, M>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more