What is STM Full Form in Computer?
The STM full form in computer is Software Transactional Memory. Software transactional memory is a concurrency control method similar to database transactions that control access to shared memory in concurrent computing. It provides an alternative to lock-based synchronization. STM is a software-based technique, not a hardware component. A transaction in this context occurs when a piece of code performs a sequence of reads and writes to shared memory.
Benefits of software transactional memory:
STM simplifies conceptual understanding of multithreaded programs and makes them more maintainable by integrating with existing high-level abstractions like objects and modules. Lock-based programming faces a number of well-known issues that commonly arise in practice. Locking necessitates considering overlapping actions and incomplete operations in distantly separated and seemingly unrelated portions of code, which is a complicated and error-prone process.
Performance of software transactional memory:
The advantage of this optimistic method is greater concurrency. No thread must wait for access to a resource, and separate threads can securely and concurrently edit disparate bits of a data structure that the same lock would otherwise secure. STM is quite optimistic, and the thread will complete modification to share the memory without any regard for what the other threads might be doing.