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CavalliumDBEngine
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pool naming

This commit is contained in:
Andrea Cavalli 2023-02-26 23:48:47 +01:00
parent 0e21c72e0a
commit 024c4ee226
1 changed files with 19 additions and 2 deletions
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21
src/main/java/it/cavallium/dbengine/utils/StreamUtils.java
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@ -1,5 +1,7 @@
package it.cavallium.dbengine.utils;
import static java.util.concurrent.ForkJoinPool.defaultForkJoinWorkerThreadFactory;
import com.google.common.collect.Iterators;
import com.google.common.collect.Streams;
import it.cavallium.dbengine.utils.PartitionByIntSpliterator.IntPartition;
@ -14,6 +16,9 @@ import java.util.Set;
import java.util.Spliterator;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinPool.ForkJoinWorkerThreadFactory;
import java.util.concurrent.ForkJoinWorkerThread;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.atomic.LongAdder;
import java.util.function.BiConsumer;
@ -32,8 +37,9 @@ import org.jetbrains.annotations.Nullable;
public class StreamUtils {
public static final ForkJoinPool LUCENE_SCHEDULER = new ForkJoinPool();
public static final ForkJoinPool ROCKSDB_SCHEDULER = new ForkJoinPool();
public static final ForkJoinPool LUCENE_SCHEDULER = newNamedForkJoinPool("Lucene");
public static final ForkJoinPool ROCKSDB_SCHEDULER = newNamedForkJoinPool("RocksDB");
private static final Collector<?, ?, ?> TO_LIST_FAKE_COLLECTOR = new FakeCollector();
private static final Collector<?, ?, ?> COUNT_FAKE_COLLECTOR = new FakeCollector();
@ -49,6 +55,17 @@ public class StreamUtils {
private static final Function<Object, Void> FINISHER = x -> null;
private static final Collector<Long,?, Long> SUMMING_LONG_COLLECTOR = new SummingLongCollector();
public static ForkJoinPool newNamedForkJoinPool(String name) {
final int MAX_CAP = 0x7fff; // max #workers - 1
return new ForkJoinPool(Math.min(MAX_CAP, Runtime.getRuntime().availableProcessors()), pool -> {
var worker = defaultForkJoinWorkerThreadFactory.newThread(pool);
worker.setName("ForkJoinPool-" + name + "-worker-" + worker.getPoolIndex());
return worker;
}, null, false,
0, MAX_CAP, 1, null, 60_000L, TimeUnit.MILLISECONDS
);
}
public static <T> Collector<T, ?, @NotNull List<T>> fastListing() {
//noinspection unchecked
return (Collector<T, ?, List<T>>) TO_LIST_FAKE_COLLECTOR;