The Downsides of C++ Coroutines: Understanding the Impact on Code Performance

The article discusses the downsides of using C++ coroutines and highlights the potential risks and challenges developers may face when incorporating coroutines into their codebase. The author emphasizes the importance of treating coroutines with caution, as they can introduce security vulnerabilities and impact program performance. The article provides an overview of how normal functions and the stack work in C++, explaining the process of passing arguments and storing local variables. It then delves into the functioning of coroutine functions, highlighting the key differences in how they handle arguments and store variables. The author explains that coroutines use the heap instead of the stack to store variables, which can have implications for memory management and performance. The article also mentions the HALO optimization technique, which allows for efficient memory allocation in coroutines. Overall, the article serves as a valuable resource for developers looking to understand the downsides and considerations associated with using C++ coroutines.