How do I reserve capacity ahead of time with std::deque in multithreaded code?

Learn how to effectively reserve capacity in std::deque for multithreaded C++ applications. This guide provides an example of how to manage memory and improve performance when working with concurrent operations on deques.
C++, std::deque, multithreading, memory management, performance optimization
// Example of using std::deque in a multithreaded environment #include #include #include #include std::deque myDeque; std::mutex mtx; void fillDeque(int elements) { for (int i = 0; i < elements; ++i) { std::lock_guard<:mutex> lock(mtx); myDeque.push_back(i); } } void reserveCapacity(std::size_t capacity) { std::lock_guard<:mutex> lock(mtx); myDeque.resize(capacity); // This will reserve capacity for the deque } int main() { reserveCapacity(100); // Reserve space for 100 elements std::thread t1(fillDeque, 50); std::thread t2(fillDeque, 50); t1.join(); t2.join(); std::lock_guard<:mutex> lock(mtx); for (const auto &item : myDeque) { std::cout << item << " "; } return 0; }

C++ std::deque multithreading memory management performance optimization

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