Memory Model
Explore the fundamentals of the C# memory model and discover why understanding operation reordering and caching is critical in multithreaded applications. Learn how memory barriers act as fences to prevent subtle bugs caused by compiler and processor optimizations, helping you write reliable concurrent C# code.
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Memory Model
A memory model is defined as the set of rules according to which the compiler, the processor or the runtime is permitted to reorder memory operations. Re-ordering operations allows compilers and the like to apply optimizations that can result in better performance. However, this freedom can wreak havoc in a multithreaded program when the memory model is not well-understood with unexpected program outcomes. The C# memory model permits reordering of memory operations in a method, as long as the behavior of single-threaded execution doesn’t change.
Consider the code snippet below. ...