io.trino.operator.window.matcher.Captures Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.trino.operator.window.matcher;
import static io.airlift.slice.SizeOf.instanceSize;
// TODO: optimize by
// - reference counting and copy on write
// - reuse allocated arrays
class Captures
{
private static final int INSTANCE_SIZE = instanceSize(Captures.class);
private final IntMultimap captures;
private final IntMultimap labels;
public Captures(int initialCapacity, int slotCount, int labelCount)
{
this.captures = new IntMultimap(initialCapacity, slotCount);
this.labels = new IntMultimap(initialCapacity, labelCount);
}
public void save(int threadId, int value)
{
captures.add(threadId, value);
}
public void saveLabel(int threadId, int value)
{
labels.add(threadId, value);
}
public void copy(int parent, int child)
{
captures.copy(parent, child);
labels.copy(parent, child);
}
public ArrayView getCaptures(int threadId)
{
return captures.getArrayView(threadId);
}
public ArrayView getLabels(int threadId)
{
return labels.getArrayView(threadId);
}
public void release(int threadId)
{
captures.release(threadId);
labels.release(threadId);
}
public long getSizeInBytes()
{
return INSTANCE_SIZE + captures.getSizeInBytes() + labels.getSizeInBytes();
}
}