Which data structure is used in multithreading?

Besides the well known data Structure which can be used in Multi-Threaded programs such as Concurrent Stack, Concurrent Queue, Concurrent List, Concurrent Hashing. Are there any other lesser know but useful Data Structures which can be used in parallel/Multi-Threaded programming.

How do you make a class thread-safe?

There are basically four ways to make variable access safe in shared-memory concurrency:

1. Confinement. Don’t share the variable between threads.
2. Immutability. Make the shared data immutable.
3. Threadsafe data type.
4. Synchronization.

What are the main issues in designing multi-threaded applications?

Multithreaded and multicontexted applications present the following disadvantages:

• Difficulty of writing code. Multithreaded and multicontexted applications are not easy to write.
• Difficulty of debugging.
• Difficulty of managing concurrency.
• Difficulty of testing.
• Difficulty of porting existing code.

Is HashMap thread-safe?

HashMap is non-synchronized. It is not thread-safe and can’t be shared between many threads without proper synchronization code whereas Hashtable is synchronized.

What data structures are thread-safe?

A thread-safe class is a class that guarantees the internal state of the class as well as returned values from methods, are correct while invoked concurrently from multiple threads. The collection classes that are thread-safe in Java are Stack, Vector, Properties, Hashtable, etc.

Which of the following is thread-safe class?

The only two legacy collections are thread-safe: Vector and Hashtable.

How can we ensure that instance of this class can be safely used by multiple threads?

Synchronization exists to protect against thread interference and memory consistency errors. By synchronizing on the getVal(), the code is guaranteeing that other synchronized methods on SomeClass do not also execute at the same time.

What is multi threaded design?

Multithreading is a technique that allows for concurrent (simultaneous) execution of two or more parts of a program for maximum utilization of a CPU. As a really basic example, multithreading allows you to write code in one program and listen to music in another. Programs are made up of processes and threads.

Is LinkedList thread-safe?

LinkedList is not thread safe. You’d have to do the locking yourself. Try ConcurrentLinkedQueue or LinkedBlockingDeque instead if it fits your needs, they are thread safe but slightly different behavior than LinkedList.