com.couchbase.client.core.env.CouchbaseForkPoolThreadFactory Maven / Gradle / Ivy

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The official Couchbase JVM Core IO Library

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/*
 * Copyright (c) 2023 Couchbase, Inc.
 *
 * 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 com.couchbase.client.core.env;

import com.couchbase.client.core.annotation.Stability;
import com.couchbase.client.core.protostellar.ProtostellarStatsCollector;

import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinWorkerThread;
import java.util.concurrent.atomic.AtomicInteger;

@Stability.Internal
public class CouchbaseForkPoolThreadFactory implements ForkJoinPool.ForkJoinWorkerThreadFactory {
  // JVMCBC-1187: Temporary performance-related code that will be removed pre-GA.
  public static ProtostellarStatsCollector collector;

  static class CouchbaseThread extends ForkJoinWorkerThread {
    public CouchbaseThread(ForkJoinPool pool) {
      super(pool);
    }
  }

  private final String namePrefix;
  private final AtomicInteger threadNumber = new AtomicInteger();

  public CouchbaseForkPoolThreadFactory(String namePrefix) {
    this.namePrefix = namePrefix;
  }

  @Override
  public ForkJoinWorkerThread newThread(ForkJoinPool pool) {
    CouchbaseThread t = new CouchbaseThread(pool);
    t.setName(namePrefix + threadNumber.getAndIncrement());
    t.setDaemon(true);
    // logger.info("Created thread {}, currently {} threads in pool, {} running", t.getName(), pool.getActiveThreadCount(), pool.getRunningThreadCount());
    if (collector != null) {
      collector.currentMaxThreadCount(pool.getActiveThreadCount());
    }
    return t;
  }
}