[−][src]Struct librapidarchive::concurrentbuf::ConcurrentWriteBuffer
Write buffer that does all of it's buffered I/O concurrently.
By doing buffered I/O on a separate thread and storing the results in memory things like copy operations can be dramatically accelerated.
Record-oriented media considerations
This facility attempts to preserve the sizes of requests where possible. This is for the sake of record-oriented media, such as magnetic tape or UDP packets, where data is stored in records or packets whose sizes are determined by the size of the write request.
Specifically, 'ConcurrentWriteBuffer' does not merge write requests into a
single, larger buffer. The inner writer will be presented with the original
data buffer, and it will only be separated into smaller buffers if the inner
writer only accepts the buffer partially. If you need such a facility for
merging writes into larger buffers, consider using BufWriter
or
BlockingWriter
depending on your needs. Such writers may be
used in concert with this one.
Methods
impl<T, P> ConcurrentWriteBuffer<T, P> where
T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
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T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
ⓘImportant traits for ConcurrentWriteBuffer<T, P>pub fn new(inner: T, limit: u64) -> ConcurrentWriteBuffer<T, P>
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Trait Implementations
impl<T, P> ArchivalSink<P> for ConcurrentWriteBuffer<T, P> where
T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
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T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
fn downcast_seek(&mut self) -> Option<&mut dyn Seek>
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fn downcast_tapedevice(&mut self) -> Option<&mut dyn TapeDevice>
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impl<T, P> RecoverableWrite<P> for ConcurrentWriteBuffer<T, P> where
T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
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T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
fn begin_data_zone(&mut self, ident: P)
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fn resume_data_zone(&mut self, ident: P, committed: u64)
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fn end_data_zone(&mut self)
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fn uncommitted_writes(&self) -> Vec<DataZone<P>>
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impl<T, P> Drop for ConcurrentWriteBuffer<T, P> where
T: Write + Send,
P: Send + Clone,
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T: Write + Send,
P: Send + Clone,
impl<T, P> Write for ConcurrentWriteBuffer<T, P> where
T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
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T: 'static + Write + Send + RecoverableWrite<P>,
P: 'static + Send + Clone + PartialEq,
fn write(&mut self, buf: &[u8]) -> Result<usize>
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fn flush(&mut self) -> Result<()>
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fn write_vectored(&mut self, bufs: &[IoVec]) -> Result<usize, Error>
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iovec
)Like write
, except that it writes from a slice of buffers. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
1.0.0[src]
Attempts to write an entire buffer into this writer. Read more
fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
1.0.0[src]
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
Creates a "by reference" adaptor for this instance of Write
. Read more
Auto Trait Implementations
impl<T, P> Send for ConcurrentWriteBuffer<T, P>
impl<T, P> !Sync for ConcurrentWriteBuffer<T, P>
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,