Which of the following is NOT a synchronization mechanism?

The correct answer is Racer.

Key Points

• A racer is not a synchronization mechanism.
• Synchronization mechanisms are tools or constructs used to manage concurrent access to shared resources in programming.
• Common synchronization mechanisms include:
  • Critical Section: A part of the code that accesses shared resources and needs to be executed by only one thread at a time.
  • Semaphore: A signaling mechanism used to control access to shared resources by multiple threads.
  • Mutex: A mutual exclusion object that ensures only one thread can access a resource at a time.
• On the other hand, racer refers to a race condition, which is a programming issue caused by improper synchronization, rather than a mechanism for achieving synchronization.

Additional Information

• Race conditions: Occur when multiple threads or processes compete to modify or access shared resources, leading to unpredictable behavior.
• Synchronization mechanisms are used to prevent race conditions in concurrent programming.
• Examples of programming languages with built-in synchronization mechanisms include Java, C++, and Python.
• Proper use of synchronization mechanisms ensures data integrity and prevents deadlocks in multithreaded applications.