Thread safety is a computer programming concept applicable in the context of multi-threaded programs. A piece of code is thread-safe if it only manipulates shared data structures in a manner that guarantees safe execution by multiple threads at the same time. There are various strategies for making thread-safe data structures.
A key challenge in multi-threaded programming, thread safety was not a concern for most application developers until the 1990s when operating systems began to expose multiple threads for code execution. Today, a program may execute code on several threads simultaneously in a shared address space where each of those threads has access to virtually all of the memory of every other thread. Thread safety is a property that allows code to run in multi-threaded environments by re-establishing some of the correspondences between the actual flow of control and the text of the program, by means of synchronization.
Read more about Thread Safety: Levels of Thread Safety, Implementation Approaches, Examples
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