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

C++, std::deque, rehashing, multithreading, performance optimization, thread safety

This article discusses how to avoid rehashing overhead when using std::deque in multithreaded C++ code, emphasizing performance and thread safety.


        // Example of using std::deque in multithreaded code
        #include 
        #include 
        #include 
        #include 

        class ThreadSafeDeque {
        public:
            void push_back(int value) {
                std::lock_guard<:mutex> lock(mutex_);
                deque_.push_back(value);
            }

            void pop_front() {
                std::lock_guard<:mutex> lock(mutex_);
                if (!deque_.empty()) {
                    deque_.pop_front();
                }
            }

            void print() {
                std::lock_guard<:mutex> lock(mutex_);
                for (const auto &val : deque_) {
                    std::cout << val << " ";
                }
                std::cout << std::endl;
            }

        private:
            std::deque deque_;
            std::mutex mutex_;
        };

        void thread_function(ThreadSafeDeque &ts_deque) {
            for (int i = 0; i < 5; ++i) {
                ts_deque.push_back(i);
            }
        }

        int main() {
            ThreadSafeDeque ts_deque;
            std::thread t1(thread_function, std::ref(ts_deque));
            std::thread t2(thread_function, std::ref(ts_deque));

            t1.join();
            t2.join();
            ts_deque.print();

            return 0;
        }

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

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

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