content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * 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
   *
   * https://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 org.agrona.concurrent;
  
  /**
   * Busy spin strategy targeted at lowest possible latency. This strategy will monopolise a thread to achieve the lowest
   * possible latency. Useful for creating bubbles in the execution pipeline of tight busy spin loops with no other logic
   * than status checks on progress.
   */
  public final class BusySpinIdleStrategy implements IdleStrategy
  {
      /**
       * Name to be returned from {@link #alias()}.
       */
      public static final String ALIAS = "spin";
  
      /**
       * As there is no instance state then this object can be used to save on allocation.
       */
      public static final BusySpinIdleStrategy INSTANCE = new BusySpinIdleStrategy();
  
      /**
       * Create a new instance.
       */
      public BusySpinIdleStrategy()
      {
      }
  
      /**
       * <b>Note</b>: this implementation will result in no safepoint poll once inlined.
       * <p>
       * {@inheritDoc}
       */
      public void idle(final int workCount)
      {
          if (workCount > 0)
          {
              return;
          }
  
          Thread.onSpinWait();
      }
  
      /**
       * {@inheritDoc}
       */
      public void idle()
      {
          Thread.onSpinWait();
      }
  
      /**
       * {@inheritDoc}
       */
      public void reset()
      {
      }
  
      /**
       * {@inheritDoc}
       */
      public String alias()
      {
          return ALIAS;
      }
  
      /**
       * {@inheritDoc}
       */
      public String toString()
      {
          return "BusySpinIdleStrategy{alias=" + ALIAS + "}";
      }
  }
  