How do I avoid rehashing overhead with std::vector in multithreaded code?

Avoiding rehashing overhead in multithreaded code when using std::vector is crucial for optimizing performance and ensuring thread safety. This guide showcases effective strategies to manage data with minimal rehashing in a multithreading environment, while maintaining efficient operations on vectors.

C++, std::vector, multithreading, rehashing overhead, performance optimization


        // Example of using std::vector in a multithreaded context
        #include 
        #include 
        #include 
        #include 

        std::vector my_vector;
        std::mutex vector_mutex;

        void add_to_vector(int value) {
            std::lock_guard<:mutex> lock(vector_mutex);
            my_vector.push_back(value); // Insert value into vector
        }

        int main() {
            std::vector<:thread> threads;

            for (int i = 0; i < 10; ++i) {
                threads.push_back(std::thread(add_to_vector, i));
            }

            for (auto& t : threads) {
                t.join(); // Wait for all threads to finish
            }

            for (int value : my_vector) {
                std::cout << value << " "; // Output the values in vector
            }
            return 0;
        }

How do I avoid rehashing overhead with std::vector in multithreaded code?

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How do I avoid rehashing overhead with std::vector in multithreaded code?

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