io.trino.operator.PageUtils 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;
import io.trino.spi.Page;
import io.trino.spi.block.Block;
import java.util.function.LongConsumer;
import static io.trino.spi.block.LazyBlock.listenForLoads;
public final class PageUtils
{
private PageUtils() {}
public static void recordMaterializedBytes(Page page, LongConsumer sizeInBytesConsumer)
{
// account processed bytes from lazy blocks only when they are loaded
long loadedBlocksSizeInBytes = 0;
for (int i = 0; i < page.getChannelCount(); ++i) {
Block block = page.getBlock(i);
long initialSize = block.getSizeInBytes();
loadedBlocksSizeInBytes += initialSize;
listenForLoads(block, loadedBlock -> sizeInBytesConsumer.accept(loadedBlock.getSizeInBytes()));
}
if (loadedBlocksSizeInBytes > 0) {
sizeInBytesConsumer.accept(loadedBlocksSizeInBytes);
}
}
}