Changes to track timely's #597

Cargo.toml

@@ -46,7 +46,7 @@ fnv="1.0.2"
 timely = {workspace = true}
 
 [workspace.dependencies]
-timely = { version = "0.13", default-features = false }
+timely = { version = "0.14", default-features = false }
 #timely = { path = "../timely-dataflow/timely/", default-features = false }
 
 [features]

dogsdogsdogs/src/operators/half_join.rs

@@ -151,7 +151,6 @@ where
     let arrangement_stream = arrangement.stream;
 
     let mut stash = HashMap::new();
-    let mut buffer = Vec::new();
 
     let exchange = Exchange::new(move |update: &((K, V, G::Timestamp),G::Timestamp,R)| (update.0).0.hashed().into());
 
@@ -167,10 +166,9 @@ where
 
             // drain the first input, stashing requests.
             input1.for_each(|capability, data| {
-                data.swap(&mut buffer);
                 stash.entry(capability.retain())
                     .or_insert(Vec::new())
-                    .extend(buffer.drain(..))
+                    .extend(data.drain(..))
             });
 
             // Drain input batches; although we do not observe them, we want access to the input

dogsdogsdogs/src/operators/lookup_map.rs

@@ -49,8 +49,6 @@ where
     let mut logic1 = key_selector.clone();
     let mut logic2 = key_selector.clone();
 
-    let mut buffer = Vec::new();
-
     let mut key: K = supplied_key0;
     let exchange = Exchange::new(move |update: &(D,G::Timestamp,R)| {
         logic1(&update.0, &mut key);
@@ -64,10 +62,9 @@ where
 
         // drain the first input, stashing requests.
         input1.for_each(|capability, data| {
-            data.swap(&mut buffer);
             stash.entry(capability.retain())
                  .or_insert(Vec::new())
-                 .extend(buffer.drain(..))
+                 .extend(data.drain(..))
         });
 
         // Drain input batches; although we do not observe them, we want access to the input

interactive/src/logging.rs

@@ -55,8 +55,6 @@ where
         let (mut park_out, park) = demux.new_output();
         let (mut text_out, text) = demux.new_output();
 
-        let mut demux_buffer = Vec::new();
-
         demux.build(move |_capability| {
 
             move |_frontiers| {
@@ -71,8 +69,6 @@ where
 
                 input.for_each(|time, data| {
 
-                    data.swap(&mut demux_buffer);
-
                     let mut operates_session = operates.session(&time);
                     let mut channels_session = channels.session(&time);
                     let mut schedule_session = schedule.session(&time);
@@ -81,7 +77,7 @@ where
                     let mut park_session = park.session(&time);
                     let mut text_session = text.session(&time);
 
-                    for (time, _worker, datum) in demux_buffer.drain(..) {
+                    for (time, _worker, datum) in data.drain(..) {
 
                         // Round time up to next multiple of `granularity_ns`.
                         let time_ns = (((time.as_nanos() as u64) / granularity_ns) + 1) * granularity_ns;
@@ -235,8 +231,6 @@ where
         let (mut batch_out, batch) = demux.new_output();
         let (mut merge_out, merge) = demux.new_output();
 
-        let mut demux_buffer = Vec::new();
-
         demux.build(move |_capability| {
 
             move |_frontiers| {
@@ -246,11 +240,10 @@ where
 
                 input.for_each(|time, data| {
 
-                    data.swap(&mut demux_buffer);
                     let mut batch_session = batch.session(&time);
                     let mut merge_session = merge.session(&time);
 
-                    for (time, _worker, datum) in demux_buffer.drain(..) {
+                    for (time, _worker, datum) in data.drain(..) {
 
                         // Round time up to next multiple of `granularity_ns`.
                         let time_ns = (((time.as_nanos() as u64) / granularity_ns) + 1) * granularity_ns;

src/capture.rs

@@ -600,7 +600,7 @@ pub mod sink {
                         }
 
                         // Now record the update to the writer.
-                        send_queue.push_back(Message::Updates(updates.replace(Vec::new())));
+                        send_queue.push_back(Message::Updates(std::mem::take(updates)));
 
                         // Transmit timestamp counts downstream.
                         output

src/dynamic/mod.rs

@@ -45,22 +45,20 @@ where
         let (mut output, stream) = builder.new_output();
         let mut input = builder.new_input_connection(&self.inner, Pipeline, vec![Antichain::from_elem(Product { outer: Default::default(), inner: PointStampSummary { retain: Some(level - 1), actions: Vec::new() } })]);
 
-        let mut vector = Default::default();
         builder.build(move |_capability| move |_frontier| {
             let mut output = output.activate();
             input.for_each(|cap, data| {
-                data.swap(&mut vector);
                 let mut new_time = cap.time().clone();
                 let mut vec = std::mem::take(&mut new_time.inner).into_vec();
                 vec.truncate(level - 1);
                 new_time.inner = PointStamp::new(vec);
                 let new_cap = cap.delayed(&new_time);
-                for (_data, time, _diff) in vector.iter_mut() {
+                for (_data, time, _diff) in data.iter_mut() {
                     let mut vec = std::mem::take(&mut time.inner).into_vec();
                     vec.truncate(level - 1);
                     time.inner = PointStamp::new(vec);
                 }
-                output.session(&new_cap).give_container(&mut vector);
+                output.session(&new_cap).give_container(data);
             });
         });
 

src/operators/arrange/upsert.rs

@@ -161,7 +161,6 @@ where
 
             // Tracks the lower envelope of times in `priority_queue`.
             let mut capabilities = Antichain::<Capability<G::Timestamp>>::new();
-            let mut buffer = Vec::new();
             // Form the trace we will both use internally and publish.
             let activator = Some(stream.scope().activator_for(info.address.clone()));
             let mut empty_trace = Tr::new(info.clone(), logger.clone(), activator);
@@ -186,8 +185,7 @@ where
                 // Stash capabilities and associated data (ordered by time).
                 input.for_each(|cap, data| {
                     capabilities.insert(cap.retain());
-                    data.swap(&mut buffer);
-                    for (key, val, time) in buffer.drain(..) {
+                    for (key, val, time) in data.drain(..) {
                         priority_queue.push(std::cmp::Reverse((time, key, val)))
                     }
                 });

src/operators/consolidate.rs

@@ -97,11 +97,9 @@ where
         self.inner
             .unary::<ConsolidatingContainerBuilder<_>, _, _, _>(Pipeline, "ConsolidateStream", |_cap, _info| {
 
-                let mut vector = Vec::new();
                 move |input, output| {
                     input.for_each(|time, data| {
-                        data.swap(&mut vector);
-                        output.session_with_builder(&time).give_iterator(vector.drain(..));
+                        output.session_with_builder(&time).give_iterator(data.drain(..));
                     })
                 }
             })

src/operators/count.rs

@@ -65,7 +65,6 @@ where
     fn count_total_core<R2: Semigroup + From<i8> + 'static>(&self) -> Collection<G, (K, T1::Diff), R2> {
 
         let mut trace = self.trace.clone();
-        let mut buffer = Vec::new();
 
         self.stream.unary_frontier(Pipeline, "CountTotal", move |_,_| {
 
@@ -87,8 +86,7 @@ where
                     if cap.is_none() {                          // NB: Assumes batches are in-order
                         cap = Some(capability.retain());
                     }
-                    batches.swap(&mut buffer);
-                    for batch in buffer.drain(..) {
+                    for batch in batches.drain(..) {
                         upper_limit.clone_from(batch.upper());  // NB: Assumes batches are in-order
                         batch_cursors.push(batch.cursor());
                         batch_storage.push(batch);

src/operators/join.rs

@@ -444,10 +444,6 @@ where
         let mut trace1_option = Some(trace1);
         let mut trace2_option = Some(trace2);
 
-        // Swappable buffers for input extraction.
-        let mut input1_buffer = Vec::new();
-        let mut input2_buffer = Vec::new();
-
         move |input1, input2, output| {
 
             // 1. Consuming input.
@@ -468,8 +464,7 @@ where
                 // This test *should* always pass, as we only drop a trace in response to the other input emptying.
                 if let Some(ref mut trace2) = trace2_option {
                     let capability = capability.retain();
-                    data.swap(&mut input1_buffer);
-                    for batch1 in input1_buffer.drain(..) {
+                    for batch1 in data.drain(..) {
                         // Ignore any pre-loaded data.
                         if PartialOrder::less_equal(&acknowledged1, batch1.lower()) {
                             if !batch1.is_empty() {
@@ -496,8 +491,7 @@ where
                 // This test *should* always pass, as we only drop a trace in response to the other input emptying.
                 if let Some(ref mut trace1) = trace1_option {
                     let capability = capability.retain();
-                    data.swap(&mut input2_buffer);
-                    for batch2 in input2_buffer.drain(..) {
+                    for batch2 in data.drain(..) {
                         // Ignore any pre-loaded data.
                         if PartialOrder::less_equal(&acknowledged2, batch2.lower()) {
                             if !batch2.is_empty() {

src/operators/reduce.rs

@@ -373,8 +373,6 @@ where
             let mut output_upper = Antichain::from_elem(<G::Timestamp as timely::progress::Timestamp>::minimum());
             let mut output_lower = Antichain::from_elem(<G::Timestamp as timely::progress::Timestamp>::minimum());
 
-            let mut input_buffer = Vec::new();
-
             let id = trace.stream.scope().index();
 
             move |input, output| {
@@ -409,8 +407,7 @@ where
                 // times in the batch.
                 input.for_each(|capability, batches| {
 
-                    batches.swap(&mut input_buffer);
-                    for batch in input_buffer.drain(..) {
+                    for batch in batches.drain(..) {
                         upper_limit.clone_from(batch.upper());
                         batch_cursors.push(batch.cursor());
                         batch_storage.push(batch);

src/operators/threshold.rs

@@ -112,7 +112,6 @@ where
     {
 
         let mut trace = self.trace.clone();
-        let mut buffer = Vec::new();
 
         self.stream.unary_frontier(Pipeline, "ThresholdTotal", move |_,_| {
 
@@ -134,8 +133,7 @@ where
                     if cap.is_none() {                          // NB: Assumes batches are in-order
                         cap = Some(capability.retain());
                     }
-                    batches.swap(&mut buffer);
-                    for batch in buffer.drain(..) {
+                    for batch in batches.drain(..) {
                         upper_limit.clone_from(batch.upper());  // NB: Assumes batches are in-order
                         batch_cursors.push(batch.cursor());
                         batch_storage.push(batch);

src/trace/implementations/chunker.rs

@@ -1,7 +1,6 @@
 //! Organize streams of data into sorted chunks.
 
 use std::collections::VecDeque;
-use timely::communication::message::RefOrMut;
 use timely::Container;
 use timely::container::columnation::{Columnation, TimelyStack};
 use timely::container::{ContainerBuilder, PushInto, SizableContainer};
@@ -64,14 +63,14 @@ where
     }
 }
 
-impl<'a, K, V, T, R> PushInto<RefOrMut<'a, Vec<((K, V), T, R)>>> for VecChunker<((K, V), T, R)>
+impl<'a, K, V, T, R> PushInto<&'a mut Vec<((K, V), T, R)>> for VecChunker<((K, V), T, R)>
 where
     K: Ord + Clone,
     V: Ord + Clone,
     T: Ord + Clone,
     R: Semigroup + Clone,
 {
-    fn push_into(&mut self, container: RefOrMut<'a, Vec<((K, V), T, R)>>) {
+    fn push_into(&mut self, container: &'a mut Vec<((K, V), T, R)>) {
         // Ensure `self.pending` has the desired capacity. We should never have a larger capacity
         // because we don't write more than capacity elements into the buffer.
         // Important: Consolidation requires `pending` to have twice the chunk capacity to
@@ -80,27 +79,11 @@ where
             self.pending.reserve(Self::chunk_capacity() * 2 - self.pending.len());
         }
 
-        // `container` is either a shared reference or an owned allocations.
-        match container {
-            RefOrMut::Ref(vec) => {
-                let mut slice = &vec[..];
-                while !slice.is_empty() {
-                    let (head, tail) = slice.split_at(std::cmp::min(self.pending.capacity() - self.pending.len(), slice.len()));
-                    slice = tail;
-                    self.pending.extend_from_slice(head);
-                    if self.pending.len() == self.pending.capacity() {
-                        self.form_chunk();
-                    }
-                }
-            }
-            RefOrMut::Mut(vec) => {
-                let mut drain = vec.drain(..).peekable();
-                while drain.peek().is_some() {
-                    self.pending.extend((&mut drain).take(self.pending.capacity() - self.pending.len()));
-                    if self.pending.len() == self.pending.capacity() {
-                        self.form_chunk();
-                    }
-                }
+        let mut drain = container.drain(..).peekable();
+        while drain.peek().is_some() {
+            self.pending.extend((&mut drain).take(self.pending.capacity() - self.pending.len()));
+            if self.pending.len() == self.pending.capacity() {
+                self.form_chunk();
             }
         }
     }
@@ -196,41 +179,25 @@ where
     }
 }
 
-impl<'a, K, V, T, R> PushInto<RefOrMut<'a, Vec<((K, V), T, R)>>> for ColumnationChunker<((K, V), T, R)>
+impl<'a, K, V, T, R> PushInto<&'a mut Vec<((K, V), T, R)>> for ColumnationChunker<((K, V), T, R)>
 where
     K: Columnation + Ord + Clone,
     V: Columnation + Ord + Clone,
     T: Columnation + Ord + Clone,
     R: Columnation + Semigroup + Clone,
 {
-    fn push_into(&mut self, container: RefOrMut<'a, Vec<((K, V), T, R)>>) {
+    fn push_into(&mut self, container: &'a mut Vec<((K, V), T, R)>) {
         // Ensure `self.pending` has the desired capacity. We should never have a larger capacity
         // because we don't write more than capacity elements into the buffer.
         if self.pending.capacity() < Self::chunk_capacity() * 2 {
             self.pending.reserve(Self::chunk_capacity() * 2 - self.pending.len());
         }
 
-        // `container` is either a shared reference or an owned allocations.
-        match container {
-            RefOrMut::Ref(vec) => {
-                let mut slice = &vec[..];
-                while !slice.is_empty() {
-                    let (head, tail) = slice.split_at(std::cmp::min(self.pending.capacity() - self.pending.len(), slice.len()));
-                    slice = tail;
-                    self.pending.extend_from_slice(head);
-                    if self.pending.len() == self.pending.capacity() {
-                        self.form_chunk();
-                    }
-                }
-            }
-            RefOrMut::Mut(vec) => {
-                let mut drain = vec.drain(..).peekable();
-                while drain.peek().is_some() {
-                    self.pending.extend((&mut drain).take(self.pending.capacity() - self.pending.len()));
-                    if self.pending.len() == self.pending.capacity() {
-                        self.form_chunk();
-                    }
-                }
+        let mut drain = container.drain(..).peekable();
+        while drain.peek().is_some() {
+            self.pending.extend((&mut drain).take(self.pending.capacity() - self.pending.len()));
+            if self.pending.len() == self.pending.capacity() {
+                self.form_chunk();
             }
         }
     }
@@ -288,15 +255,15 @@ where
     }
 }
 
-impl<'a, Input, Output> PushInto<RefOrMut<'a, Input>> for ContainerChunker<Output>
+impl<'a, Input, Output> PushInto<&'a mut Input> for ContainerChunker<Output>
 where
     Input: Container,
     Output: SizableContainer
         + ConsolidateLayout
         + PushInto<Input::Item<'a>>
         + PushInto<Input::ItemRef<'a>>,
 {
-    fn push_into(&mut self, container: RefOrMut<'a, Input>) {
+    fn push_into(&mut self, container: &'a mut Input) {
         if self.pending.capacity() < Output::preferred_capacity() {
             self.pending.reserve(Output::preferred_capacity() - self.pending.len());
         }
@@ -313,19 +280,9 @@ where
                 }
             }
         };
-        match container {
-            RefOrMut::Ref(container) => {
-                for item in container.iter() {
-                    self.pending.push(item);
-                    form_batch(self);
-                }
-            }
-            RefOrMut::Mut(container) => {
-                for item in container.drain() {
-                    self.pending.push(item);
-                    form_batch(self);
-                }
-            }
+        for item in container.drain() {
+            self.pending.push(item);
+            form_batch(self);
         }
     }
 }