pub struct FrontieredInputHandleCore<'a, T: Timestamp, C: Container + 'a, P: Pull<Bundle<T, C>> + 'a> {
pub handle: &'a mut InputHandleCore<T, C, P>,
pub frontier: &'a MutableAntichain<T>,
}
Expand description
Handle to an operator’s input stream and frontier.
Fields§
§handle: &'a mut InputHandleCore<T, C, P>
The underlying input handle.
frontier: &'a MutableAntichain<T>
The frontier as reported by timely progress tracking.
Implementations§
source§impl<'a, T: Timestamp, C: Container, P: Pull<Bundle<T, C>> + 'a> FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T: Timestamp, C: Container, P: Pull<Bundle<T, C>> + 'a> FrontieredInputHandleCore<'a, T, C, P>
sourcepub fn new(
handle: &'a mut InputHandleCore<T, C, P>,
frontier: &'a MutableAntichain<T>
) -> Self
pub fn new( handle: &'a mut InputHandleCore<T, C, P>, frontier: &'a MutableAntichain<T> ) -> Self
Allocate a new frontiered input handle.
sourcepub fn next(&mut self) -> Option<(InputCapability<T>, RefOrMut<'_, C>)>
pub fn next(&mut self) -> Option<(InputCapability<T>, RefOrMut<'_, C>)>
Reads the next input buffer (at some timestamp t
) and a corresponding capability for t
.
The timestamp t
of the input buffer can be retrieved by invoking .time()
on the capability.
Returns None
when there’s no more data available.
sourcepub fn for_each<F: FnMut(InputCapability<T>, RefOrMut<'_, C>)>(
&mut self,
logic: F
)
pub fn for_each<F: FnMut(InputCapability<T>, RefOrMut<'_, C>)>( &mut self, logic: F )
Repeatedly calls logic
till exhaustion of the available input data.
logic
receives a capability and an input buffer.
§Examples
use timely::dataflow::operators::ToStream;
use timely::dataflow::operators::generic::Operator;
use timely::dataflow::channels::pact::Pipeline;
timely::example(|scope| {
(0..10).to_stream(scope)
.unary(Pipeline, "example", |_cap,_info| |input, output| {
input.for_each(|cap, data| {
output.session(&cap).give_vec(&mut data.replace(Vec::new()));
});
});
});
sourcepub fn frontier(&self) -> &'a MutableAntichain<T>
pub fn frontier(&self) -> &'a MutableAntichain<T>
Inspect the frontier associated with this input.
Auto Trait Implementations§
impl<'a, T, C, P> Freeze for FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T, C, P> !RefUnwindSafe for FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T, C, P> !Send for FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T, C, P> !Sync for FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T, C, P> Unpin for FrontieredInputHandleCore<'a, T, C, P>
impl<'a, T, C, P> !UnwindSafe for FrontieredInputHandleCore<'a, T, C, P>
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
source§impl<R, O, T> CopyOnto<ConsecutiveOffsetPairs<R, O>> for T
impl<R, O, T> CopyOnto<ConsecutiveOffsetPairs<R, O>> for T
source§fn copy_onto(
self,
target: &mut ConsecutiveOffsetPairs<R, O>
) -> <ConsecutiveOffsetPairs<R, O> as Region>::Index
fn copy_onto( self, target: &mut ConsecutiveOffsetPairs<R, O> ) -> <ConsecutiveOffsetPairs<R, O> as Region>::Index
Copy self into the target container, returning an index that allows to
look up the corresponding read item.