content: /*
   * 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.google.j2objc.annotations;
  
  import java.lang.annotation.Retention;
  import java.lang.annotation.Target;
  
  import static java.lang.annotation.ElementType.*;
  import static java.lang.annotation.RetentionPolicy.*;
  
  /**
   * Annotation that indicates a local variable should be retained outside of any
   * subsequent AutoreleasePool use. Otherwise, if a local variable has a copy
   * of an object in a container that is removed in an AutoreleasePool, it will
   * be deallocated before the local variable goes out of scope.
   * <p>
   * For example, a ThreadPoolExecutor is used to process a list of tasks,
   * removing each task from the list as it is processed. ThreadPoolExecutor
   * tasks are run inside of an AutoreleasePool, since these executors are often
   * long-lived. If a local variable is initialized to one of the task list's
   * elements, by default that variable won't be valid (will be deallocated)
   * after task processing. Adding a LocalRetain annotation to the local
   * variable ensures it is still valid after task processing.
   *
   * @author Tom Ball
   */
  @Target(LOCAL_VARIABLE)
  @Retention(SOURCE)
  public @interface RetainedLocalRef {
  }