infer_clone/infer/tests/codetoanalyze/java/threadsafety/RaceWithMainThread.java

/*
 * Copyright (c) 2016 - present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

package codetoanalyze.java.checkers;

import javax.annotation.concurrent.ThreadSafe;

class OurThreadUtils{
  void assertMainThread(){}
  void assertHoldsLock(Object lock){}
}

@ThreadSafe
class RaceWithMainThread{

  Integer f;
  OurThreadUtils o;

  void main_thread_OK(){
      o.assertMainThread();
      f = 88;
   }

   void main_thread_indirect_OK() {
     main_thread_OK();
     f = 77;
   }

  void read_from_main_thread_OK(){
    Integer x;
    o.assertMainThread();
    x = f;
  }

  void read_unprotected_unthreaded_Bad(){
    Integer x;
    x = f;
  }

  /*TODO: There should be a warning either here or in main_thread_OK()
   or maybe even in both.*/
  void read_protected_unthreaded_Bad_FN(){
    Integer x;
    synchronized (this){
      x = f;
    }
   }

  Integer g;

  void holds_lock_OK(){
      o.assertHoldsLock(this);
      g = 88;
   }

   void holds_lock_indirect_OK() {
     holds_lock_OK();
     g = 77;
   }
}